Re: USB 3.0 xhci questions

[Takahiro HAYASHI <t.hash425%gmail.com@localhost>]

Hello,

On 08/11/14 21:51, Ryo ONODERA wrote:
> > Do these xHCIs work on other OS?
> > If yes, hardware seems good.
>
> Arch Linux (archlinux-2014.08.01.iso; Linux 3.15.7) works fine
> on both machines. SuperSpeed USB device is detected and attached to xhci.
> Hardwares have no problem.

Thanks for checking.

I have no good idea to explain this.
It looks like xhci_intr is called even though
no interrupters trigger.

I have some questions.

1) Do you have PCI_INTR_FIXUP in your kernel config?
2) Is the port enabled -- has XHCI_PS_PED in PORTSC?

I think address of USBSTS is correct because
xhci_init returns normally and xhci is configured.


For comparison here is dmesg from my testbed:

xhci0 at pci5 dev 0 function 0: vendor 0x1033 product 0x0194 (rev. 0x04)
xhci0: interrupting at ioapic0 pin 21
xhci_init
xhci0: ac64 1 ctxsz 32
xhci0: xECP 500
xhci0: ECR 500: 00000401
xhci0: ECR 510: 03000402
xhci0: SP: 03000402 20425355 00000201
xhci0: ECR 520: 02000002
xhci0: SP: 02000002 20425355 00000203
xhci0: PAGESIZE 0x00000001
xhci0: sc_pgsz 0x00001000
xhci0: sc_maxslots 0x00000020
xhci0: sc_maxspbuf 0
xhci0: eventst: NORMAL_COMPLETION 0000000002f15fc0 0xffff800013028fc0 1000
xhci0: dcbaa: NORMAL_COMPLETION 0000000002f17000 0xffff800013029000 1000
xhci0: USBCMD 00000005
usb5 at xhci0: USB revision 2.0
usb5: WARNING: power management not supported

and i got:

xhci0: xhci_intr1 USBSTS 00000018
xhci0: xhci_intr1 USBSTS 00000000
xhci0: xhci_intr1 IMAN0 00000003
xhci0: xhci_intr1 IMAN0 00000002
xhci0: xhci_intr1 USBSTS 00000000
xhci0: port 1 status change


--
t-hash