NetBSD Problem Report #56694

From www@netbsd.org  Sat Feb  5 23:57:00 2022
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Date: Sat,  5 Feb 2022 23:56:58 +0000 (UTC)
From: luisvmendes@yandex.com
Reply-To: luisvmendes@yandex.com
To: gnats-bugs@NetBSD.org
Subject: Dell Latitude 5420 NVME driver not detected
X-Send-Pr-Version: www-1.0

>Number:         56694
>Category:       port-amd64
>Synopsis:       Dell Latitude 5420 NVME driver not detected
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Feb 06 00:00:00 +0000 2022
>Last-Modified:  Wed Feb 09 12:40:01 +0000 2022
>Originator:     Luis Mendes
>Release:        -current 9.99.93 (GENERIC)
>Organization:
>Environment:
NetBSD 9.99.93 NetBSD 9.99.93 (GENERIC) #0: Sun Jan 23 14:55:20 UTC 2022 mkrepro@mkrepro.NETbsd.org:/usr/src/sgs/arch/amd64/compile/GENERIC amd64
>Description:
For a Dell Latitude 5420 laptop, the M.2 256GB PCIe NVMe Class 35 Solid State Drive is not detected.

pcictl pci0 list  doesn't show it.

lspci in Linux shows:
- a RAID bus controller: Intel Corporation Volume Management device NVMe RAID Controller
- a 10000:e1:00.0  Non-Volatile memory controller: KIOXIA Corporation Device 
- a 10000:e0:1d.0 PCI bridge: Intel Corporation Tiger Lake-LP PCI Express Root Port #9 (rev 20)

In the IRC channel, mlelstv suggested that's probably a second PCI domain that is not supported.
>How-To-Repeat:
Just boot with the installation image.
>Fix:

>Audit-Trail:
From: Patrick Welche <prlw1@talktalk.net>
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: port-amd64/56694: Dell Latitude 5420 NVME driver not detected
Date: Wed, 9 Feb 2022 12:37:23 +0000

 On Sun, Feb 06, 2022 at 12:00:01AM +0000, luisvmendes@yandex.com wrote:
 > lspci in Linux shows:

 > - a RAID bus controller: Intel Corporation Volume Management
       ^^^^
 >    device NVMe RAID Controller

 Have a look for a setting in the "BIOS" to change the storage type
 away from RAID (presumably for Intel Rapid Storage Technology).
 The disk should then be detected.

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