Como encontrar o slot pci de um controlador usb no Linux?

Question

Eu tenho uma máquina Linux quase comum aqui. Então, ele tem um barramento PCI (* -X, etc), em alguns controladores USB, e eu tenho dispositivos USB nesses controladores USB. Semelhante a isto:

$ lspci|grep USB
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:16.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:16.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
02:00.0 USB controller: VIA Technologies, Inc. VL805 USB 3.0 Host Controller (rev 01)

E também há uma árvore de dispositivos usb, como esta:

$ lsusb -t
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/4p, 12M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/5p, 12M
    |__ Port 5: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/5p, 12M
    |__ Port 2: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 2: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 3: Dev 12, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 4: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 4: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/4p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/5p, 480M
    |__ Port 2: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
        |__ Port 1: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
        |__ Port 4: Dev 11, If 0, Class=Vendor Specific Class, Driver=r8712u, 480M
    |__ Port 3: Dev 3, If 0, Class=Vendor Specific Class, Driver=MOSCHIP usb-ethernet driver, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/5p, 480M
    |__ Port 1: Dev 6, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 1: Dev 6, If 1, Class=Video, Driver=uvcvideo, 480M
    |__ Port 1: Dev 6, If 2, Class=Audio, Driver=snd-usb-audio, 480M
    |__ Port 1: Dev 6, If 3, Class=Audio, Driver=snd-usb-audio, 480M

Então, vejo meus controladores USB no barramento PCI e também meus dispositivos USB nos controladores USB.

Mas eu não sei qual número do controlador USB (no barramento USB) pertence a qual número do barramento PCI!

Como encontrar isso?

    

Answer 1

Essas informações podem ser recuperadas da entrada iSerial da saída detalhada do lsusb . O mais fácil é passar a saída para o visualizador less e pesquisar manualmente com / ou, por exemplo, com grep :

$ lsusb -v 2>/dev/null | grep '^Bus\|iSerial'

Bus 001 Device 029: ID 12d1:1506 Huawei Technologies Co., Ltd. Modem/Networkcard
  iSerial                 0 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  iSerial                 1 0000:00:1d.7
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  iSerial                 1 0000:00:1d.3
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  iSerial                 1 0000:00:1d.2
...