Messages in this thread | | | Date | Mon, 27 Jun 2005 16:03:35 -0600 | From | Jim Ramsay <> | Subject | USB ohci vs ehci |
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I have an NEC-based 'UP215-N101' USB 2.0 PCI card which can apparently appear as a device under ohci-hcd or ehci-hcd, depending on which one is loaded. If both modules are loaded, the device doesn't seem to work, as it is detected by both
I would just load the ehci-hcd device, except that the on-board USB is only detected by ohci-hcd.
Is there some way to make ohci-hcd ignore a specific PCI device or devices? Or is there a way ehci-hcd can tell ohci-hcd to 'forget' about a particular device if it exists in ehci-hcd as well?
Output of `dmesg` after loading ohci-hcd. The card in question is at pci 0000:00:10
ohci_hcd 0000:00:01.3: PCI device 1283:1234 (Integrated Technology Express, Inc. ) ohci_hcd 0000:00:01.3: irq 35, pci mem 0xd020000 ohci_hcd 0000:00:01.3: new USB bus registered, assigned bus number 1 hub 1-0:1.0: USB hub found hub 1-0:1.0: 2 ports detected ohci_hcd 0000:00:10.0: NEC Corporation USB ohci_hcd 0000:00:10.0: irq 40, pci mem 0xd021000 ohci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 2 hub 2-0:1.0: USB hub found hub 2-0:1.0: 3 ports detected ohci_hcd 0000:00:10.1: NEC Corporation USB (#2) ohci_hcd 0000:00:10.1: irq 40, pci mem 0xd022000 ohci_hcd 0000:00:10.1: new USB bus registered, assigned bus number 3 hub 3-0:1.0: USB hub found hub 3-0:1.0: 2 ports detected
Output of `dmesg` after loading ehci-hcd:
ehci_hcd 0000:00:10.2: NEC Corporation USB 2.0 ehci_hcd 0000:00:10.2: irq 40, pci mem 0xd024000 ehci_hcd 0000:00:10.2: new USB bus registered, assigned bus number 4 ehci_hcd 0000:00:10.2: park 0 ehci_hcd 0000:00:10.2: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 hub 4-0:1.0: USB hub found hub 4-0:1.0: 5 ports detected
Output of `lspci -vv -s 10`:
00:10.0 Class 0c03: 1033:0035 (rev 43) (prog-if 10) Subsystem: 3083:0035 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Step ping- SERR+ FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort - <MAbort- >SERR- <PERR- Latency: 252 (250ns min, 10500ns max), cache line size 08 Interrupt: pin A routed to IRQ 40 Region 0: Memory at 0d021000 (32-bit, non-prefetchable) [size=4K] Capabilities: [40] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot +,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:10.1 Class 0c03: 1033:0035 (rev 43) (prog-if 10) Subsystem: 3083:0035 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Step ping- SERR+ FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort - <MAbort- >SERR- <PERR- Latency: 252 (250ns min, 10500ns max), cache line size 08 Interrupt: pin B routed to IRQ 40 Region 0: Memory at 0d022000 (32-bit, non-prefetchable) [size=4K] Capabilities: [40] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot +,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:10.2 Class 0c03: 1033:00e0 (rev 04) (prog-if 20) Subsystem: 3083:00e0 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+ Step ping- SERR+ FastB2B- Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort - <MAbort- >SERR- <PERR- Latency: 252 (4000ns min, 8500ns max), cache line size 08 Interrupt: pin C routed to IRQ 40 Region 0: Memory at 0d024000 (32-bit, non-prefetchable) [size=256] Capabilities: [40] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot +,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME-
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