[bugzilla-daemon at kernel.org: [Bug 220175] New: NVMe SSD doesn't work via Thunderbolt enclosure on Framework 13 (Ryzen AI 300)]

[Bjorn Helgaas]

[+cc pciehp, thunderbolt, nvme folks;
 +bcc Andrey (reporter)]

Andrey, sorry that you tripped over this, and thank you very much for
reporting it.  I'm forwarding this to the mailing lists because most
subsystems don't really pay attention to the bugzilla.

Obviously we don't want to have to use kernel args to make things
work, and we also don't want to have to use /sys/bus/pci/rescan after
a hot-add.

IIUC, if you boot while the SSD in the enclosure is already attached
to the USB 3.2 port, everything works fine?  Could you please attach a
complete dmesg log from such a boot to the bugzilla, just as a
baseline?

----- Forwarded message from bugzilla-daemon at kernel.org -----

https://bugzilla.kernel.org/show_bug.cgi?id=220175

           Summary: NVMe SSD doesn't work via Thunderbolt enclosure on
                    Framework 13 (Ryzen AI 300)

Created attachment 308180
  --> https://bugzilla.kernel.org/attachment.cgi?id=308180&action=edit
lspci -vvv

I have a Samsung 970 Evo Plus SSD installed in an ACASIS TBU401E USB4
enclosure. When I connect it to the USB 3.2 port, everything is fine, the SSD
is detected by the scsi driver and shows up in the system as /dev/sdb. But when
I plug it into the USB4 port, the device doesn't show up.

However, I can connect and use this disk by using kernel args
`nvme_core.default_ps_max_latency_us=0 pcie_aspm=off pcie_port_pm=off` and
doing `echo 1 | sudo tee /sys/bus/pci/rescan` after connecting the SSD.

Solution described in https://bugzilla.kernel.org/show_bug.cgi?id=216000#c65
doesn't help and breaks most of the PCIe devices in the system.

More info:

```
$ uname -r
6.14.6-300.fc42.x86_64
$ ls /dev/nvme*    
zsh: no matches found: /dev/nvme*
$ cat /sys/bus/thunderbolt/devices/1-2/vendor_name         
ACASIS
$ cat /sys/bus/thunderbolt/devices/1-2/authorized         
1
$ inxi -MC           
Machine:
  Type: Laptop System: Framework product: Laptop 13 (AMD Ryzen AI 300 Series)
    v: A9 serial: <superuser required>
  Mobo: Framework model: FRANMGCP09 v: A9 serial: <superuser required>
    UEFI: INSYDE v: 03.03 date: 03/10/2025
CPU:
  Info: 12-core model: AMD Ryzen AI 9 HX 370 w/ Radeon 890M bits: 64
```