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From: Gia <giacomo.gio@gmail.com>
Date: Tue, 21 May 2024 10:15:28 +0200
Message-ID: <CAHe5sWb7kHurBvu6JC6OgXZm9mSg5a2W2XK9L8gCygYaFZz7JQ@mail.gmail.com>
Subject: Re: [REGRESSION][BISECTED] "xHCI host controller not responding,
 assume dead" on stable kernel > 6.8.7
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: =?UTF-8?Q?Benjamin_B=C3=B6hmke?= <benjamin@boehmke.net>, 
	Mario Limonciello <mario.limonciello@amd.com>, Christian Heusel <christian@heusel.eu>, 
	Linux regressions mailing list <regressions@lists.linux.dev>, 
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, 
	"stable@vger.kernel.org" <stable@vger.kernel.org>, "kernel@micha.zone" <kernel@micha.zone>, 
	Andreas Noever <andreas.noever@gmail.com>, Michael Jamet <michael.jamet@intel.com>, 
	Yehezkel Bernat <YehezkelShB@gmail.com>, 
	"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>, "S, Sanath" <Sanath.S@amd.com>
Content-Type: text/plain; charset="UTF-8"
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Here you go:

0x0080 0x003c01c0 0b00000000 00111100 00000001 11000000 .... LANE_ADP_CS_0
  [00:07]       0xc0 Next Capability Pointer
  [08:15]        0x1 Capability ID
  [16:19]        0xc Supported Link Speeds
  [20:21]        0x3 Supported Link Widths (SLW)
  [22:23]        0x0 Gen 4 Asymmetric Support (G4AS)
  [26:26]        0x0 CL0s Support
  [27:27]        0x0 CL1 Support
  [28:28]        0x0 CL2 Support
0x0081 0x0828003c 0b00001000 00101000 00000000 00111100 .... LANE_ADP_CS_1
  [00:03]        0xc Target Link Speed =E2=86=92 Router shall attempt Gen 3=
 speed
  [04:05]        0x3 Target Link Width =E2=86=92 Establish a Symmetric Link
  [06:07]        0x0 Target Asymmetric Link =E2=86=92 Establish Symmetric L=
ink
  [10:10]        0x0 CL0s Enable
  [11:11]        0x0 CL1 Enable
  [12:12]        0x0 CL2 Enable
  [14:14]        0x0 Lane Disable (LD)
  [15:15]        0x0 Lane Bonding (LB)
  [16:19]        0x8 Current Link Speed =E2=86=92 Gen 2
  [20:25]        0x2 Negotiated Link Width =E2=86=92 Symmetric Link (x2)
  [26:29]        0x2 Adapter State =E2=86=92 CL0
  [30:30]        0x0 PM Secondary (PMS)

On Tue, May 21, 2024 at 7:11=E2=80=AFAM Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
>
> Hi,
>
> On Mon, May 20, 2024 at 07:30:28PM +0200, Gia wrote:
> > In my case I use the official Thunderbolt cable that came with my
> > CalDigit TS3 Plus and yet the log - attached in a previous email -
> > says current link speed 10.0 Gb/s. I just tried a good quality USB4
> > cable too and nothing changed.
>
> I will take a look at your logs today but in the meantime can you run
> following command on the system with the dock connected?
>
>   # tbdump -r 0 -a 1 -vv -N 2 LANE_ADP_CS_0
>
> Here tbdump comes from https://github.com/intel/tbtools. It should be
> pretty straighforward to build but let me know if any issues
> (unfortunately there is no binary package available at this time).
>
> The '-a 1' should match the adapter the dock is connected. You can get
> it for instance like this (this is an example from my system):
>
>   # tblist
>   Domain 0 Route 0: 8087:7eb2 Intel Gen14
>   Domain 0 Route 1: 003d:0011 CalDigit, Inc. TS3 Plus
>   Domain 1 Route 0: 8087:7eb2 Intel Gen14
>
> Here the CalDigit has "Route 1" so it means I use "-a 1" above. It could
> be also "Domain 0 Route 3" in which case replace the "-a 1" with "-a 3".
>
> This command should dump two lane adapter registers LANE_ADP_CS_0/1 that
> show the link capabilities.