RE: xhci data toggle out of sync

Hi HPS,

With few debug logs I do see that

xhci_configure_reset_endpoint:3958: epno = 3, ep_state = 3, drop = 0
xhci_configure_reset_endpoint:3958: epno = 3, ep_state = 0, drop = 1

Do we need to do drop even if the ep_state is 0 ?


Attached logs for a case where all the retries fail in a specific case.

Thanks,
Mahesh


Juniper Business Use Only

-----Original Message-----
From: Hans Petter Selasky <hps@selasky.org> 
Sent: Thursday, April 21, 2022 12:10 AM
To: Mahesh Vardhamanaiah <maheshmv@juniper.net>; Kamal Prasad <krprasad@juniper.net>; freebsd-usb@freebsd.org
Cc: Steve Kiernan <stevek@juniper.net>; Justin Hibbits <jhibbits@juniper.net>; Kumara N Babu <bkumara@juniper.net>; Kristof Provost <kp@FreeBSD.org>; Bjoern A. Zeeb <bz@FreeBSD.org>
Subject: Re: xhci data toggle out of sync

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Hi Mahesh,

I don't see any "Could not XXX" messages, so then the XHCI part should be fine, and if you verify using Beagle, I expect there to be no more data toggle mismatches, but I may be wrong.

--HPS

On 4/20/22 19:48, Mahesh Vardhamanaiah wrote:
> Please find the few of the debug logs added in around the time problem is seen.
>
>
> Tue Apr 19 23:37status = 0x6, xhci_configure_reset_endpoint() called 
> epno = 3, ep state = 3, drop = 0
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 1 status = 0x6, xhci_configure_reset_endpoint() called epno = 3, ep 
> state = 3, drop = 0
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 1
>
> FreeBSD/arm (Amnesiac) (ttyu0)
>
> login: err = 0x12
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 0
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 1 err = 0x12 xhci_configure_reset_endpoint() called epno = 3, ep state 
> = 3, drop = 0
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 1 err = 0x12 xhci_configure_reset_endpoint() called epno = 3, ep state 
> = 3, drop = 0
>
> (da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 d7 79 a8 00 00 80 00
> (da0:umass-sim0:0:0:0): CAM status: CCB request completed with an 
> error
> (da0:umass-sim0:0:0:0): Retrying command, 3 more tries remain
> xhci_configure_reset_endpoint() called epno = 2, ep state = 3, drop = 
> 1
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 1 status = 0x6, xhci_configure_reset_endpoint() called epno = 3, ep 
> state = 3, drop = 0
> xhci_configure_reset_endpoint() called epno = 3, ep state = 3, drop = 
> 1