on alix1c, I put a pci usb card in.
Then I plug in a usb device.
I get this: usb 3-2: new full speed USB device using uhci_hcd and address 2 usb 3-2: device descriptor read/64, error -110 usb 3-2: device descriptor read/64, error -110 usb 3-2: new full speed USB device using uhci_hcd and address 3 usb 3-2: device descriptor read/64, error -110 usb 3-2: device descriptor read/64, error -110 usb 3-2: new full speed USB device using uhci_hcd and address 4 usb 3-2: device not accepting address 4, error -110 usb 3-2: new full speed USB device using uhci_hcd and address 5 usb 3-2: device not accepting address 5, error -110 hub 3-0:1.0: unable to enumerate USB device on port 2
interrupts, however, don't happen: 0: 88 XT-PIC-XT timer 2: 0 XT-PIC-XT cascade 4: 1058 XT-PIC-XT serial 7: 4793137 XT-PIC-XT mfgpt-timer 8: 0 XT-PIC-XT rtc 9: 2 XT-PIC-XT ohci_hcd:usb1, uhci_hcd:usb3 10: 210 XT-PIC-XT eth0 11: 0 XT-PIC-XT uhci_hcd:usb2 14: 360 XT-PIC-XT ide0 NMI: 0 Non-maskable interrupts TRM: 0 Thermal event interrupts SPU: 0 Spurious interrupts ERR: 0
So the IRQ 9 is this via usb card in 3V pci slot. I get one interrupt per USB plug/unplug event.
For the onboard, working USB, when I hotplug, well, I get lots more: 9: 24 XT-PIC-XT ohci_hcd:usb1, uhci_hcd:usb3
So it seems to be back to IRQ stuff.
Now my devices look like this: 00:0f.4 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] OHC (rev 02) (prog-if 10 [OHCI]) Subsystem: Advanced Micro Devices [AMD] CS5536 [Geode companion] OHC 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 9 Region 0: Memory at fe016000 (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-
00:0f.5 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] EHC (rev 02) (prog-if 20 [EHCI]) Subsystem: Advanced Micro Devices [AMD] CS5536 [Geode companion] EHC 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-
Interrupt: pin D routed to IRQ 9 Region 0: Memory at fe017000 (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-
note that the onboard usb, which is NOT routed from the pci bus, is irq 9.
The via USB card looks like this: 00:0c.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller 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: 64, cache line size 10 Interrupt: pin A routed to IRQ 11 Region 4: I/O ports at 1c80 [size=32] Capabilities: [80] 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+
00:0c.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller 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: 64, cache line size 10 Interrupt: pin B routed to IRQ 9 Region 4: I/O ports at 1ca0 [size=32] Capabilities: [80] 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+
00:0c.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63) (prog-if 20 [EHCI]) Subsystem: VIA Technologies, Inc. USB 2.0 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-
Interrupt: pin C routed to IRQ 11 Region 0: Memory at fe019000 (32-bit, non-prefetchable) [size=256] Capabilities: [80] 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-
so it's using IRQ 9 and 11, depending on port.
The port I plugged the usb into was UHCI.
But we had a problem with MFGPT not working due to improper IRQ controller setup. Is there any chance of a PCI conflict with the onboard USB controller?
not in terms of "sharing interrupts' but in terms of some internal cs5536 issue?
ron