On Mon, 10 Nov 2003 13:55:39 +0100 Bernd Walter <ticso_at_cicely12.cicely.de> wrote: > But ehci doesn't control low/full speed ports. > The physical ports are multiplexed between ehci and ohci/uhci ports. > The switching is done without driver interaction. Attached to the port is a uhub1: NEC Corporation USB2.0 Hub Controller, class 9/0, rev 2.00/1.00, addr 2 uhub1: 4 ports with 4 removable, self powered on this hub is a ums0: Logitech USB Receiver, rev 1.10/9.10, addr 3, iclass 3/1 ums0: 5 buttons and Z dir. This is from the dmesg of my desktop system (USB 1.1 only). If I attach this combo to the other system ehci tells me: ---snip--- usb4: unrevoerable error, controller halted usb4: blocking intrs 0x10 ---snip-- and stopps booting further. The usb part of the dmesg without anything attached: ---snip--- # dmesg |grep -E '(usb|hci|uhub)' uhci0: <Intel 82801EB (ICH5) USB controller USB-A> port 0xbc00-0xbc1f irq 16 at device 29.0 on pci0 usb0: <Intel 82801EB (ICH5) USB controller USB-A> on uhci0 usb0: USB revision 1.0 uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered uhci1: <Intel 82801EB (ICH5) USB controller USB-B> port 0xb000-0xb01f irq 19 at device 29.1 on pci0 usb1: <Intel 82801EB (ICH5) USB controller USB-B> on uhci1 usb1: USB revision 1.0 uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub1: 2 ports with 2 removable, self powered uhci2: <Intel 82801EB (ICH5) USB controller USB-C> port 0xb400-0xb41f irq 18 at device 29.2 on pci0 usb2: <Intel 82801EB (ICH5) USB controller USB-C> on uhci2 usb2: USB revision 1.0 uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub2: 2 ports with 2 removable, self powered uhci3: <Intel 82801EB (ICH5) USB controller USB-D> port 0xb800-0xb81f irq 16 at device 29.3 on pci0 usb3: <Intel 82801EB (ICH5) USB controller USB-D> on uhci3 usb3: USB revision 1.0 uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub3: 2 ports with 2 removable, self powered ehci0: <EHCI (generic) USB 2.0 controller> mem 0xfc000000-0xfc0003ff irq 23 at device 29.7 on pci0 ehci0: (New EHCI DeviceId=0x24dd8086) ehci_pci_attach: companion usb0 ehci_pci_attach: companion usb1 ehci_pci_attach: companion usb2 ehci_pci_attach: companion usb3 usb4: EHCI version 1.0 usb4: companion controllers, 2 ports each: usb0 usb1 usb2 usb3 usb4: <EHCI (generic) USB 2.0 controller> on ehci0 usb4: USB revision 2.0 uhub4: (0x8086) EHCI root hub, class 9/0, rev 2.00/1.00, addr 1 uhub4: 8 ports with 8 removable, self powered ---snip--- Bye, Alexander. -- To boldly go where I surely don't belong. http://www.Leidinger.net Alexander _at_ Leidinger.net GPG fingerprint = C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7Received on Mon Nov 10 2003 - 05:54:44 UTC
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