** Also affects: linux-raspi (Ubuntu Mantic)
Importance: Undecided
Status: New
** Changed in: linux-raspi (Ubuntu Mantic)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/2052861
Title:
NVME devices are not enumerated on Raspberry PI 5 with Ubuntu 23.10
Status in linux-raspi package in Ubuntu:
New
Status in linux-raspi source package in Mantic:
In Progress
Bug description:
NVME devices are not enumerated on Raspberry PI 5 with Ubuntu 23.10
I've got one of the PCIe NVME extension HATs for rpi 5 [1] and installed a
functioning NVME drive Samsung SM961.
Tried to boot it first with an image of RaspberryPI OS from sd-card. Upon
boot, the nvme drive was detected and I could mount it and perform some IO:
> uname -a
Linux raspberrypi 6.1.0-rpi8-rpi-2712 #1 SMP PREEMPT Debian 1:6.1.73-1+rpt1
(2024-01-25) aarch64 GNU/Linux
> lspci -nnk
0000:00:00.0 PCI bridge [0604]: Broadcom Inc. and subsidiaries Device
[14e4:2712] (rev 21)
Kernel driver in use: pcieport
0000:01:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co
Ltd NVMe SSD Controller SM961/PM961/SM963 [144d:a804]
Subsystem: Samsung Electronics Co Ltd SM963 2.5" NVMe PCIe SSD [144d:a801]
Kernel driver in use: nvme
0001:00:00.0 PCI bridge [0604]: Broadcom Inc. and subsidiaries Device
[14e4:2712] (rev 21)
Kernel driver in use: pcieport
0001:01:00.0 Ethernet controller [0200]: Device [1de4:0001]
Kernel driver in use: rp1
dmesg logs of rpios will be attached, but there is nothing suspicious.
Then I've tried to run Ubuntu 23.10 and reimaged the sd-card with "Ubuntu
Server 23.10 (64-bit) (released 2023-10-12).
Upon boot, the drive didn't show up:
> lspci -nnk
00:00.0 PCI bridge [0604]: Broadcom Inc. and subsidiaries Device [14e4:2712]
(rev 21)
Kernel driver in use: pcieport
01:00.0 Ethernet controller [0200]: Device [1de4:0001]
Kernel driver in use: rp1
Checked for updates and there was a newer kernel available, thus I've
upgraded:
> apt update
> apt list --upgradable
...
linux-image-raspi/mantic-updates,mantic-security 6.5.0.1010.11 arm64
[upgradable from: 6.5.0.1005.6]
After reboot, the nvme still didn't show up. Full dmesg log is attached, but
in essence the pcie driver is having troubles to enumerate one for devices on
the bus:
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x414fd0b1]
[ 0.000000] Linux version 6.5.0-1010-raspi (buildd@bos03-arm64-017)
(aarch64-linux-gnu-gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0, GNU ld (GNU Binutils
for Ubuntu) 2.41) #13-Ubuntu SMP PREEMPT_DYNAMIC Thu Jan 18 09:08:04 UTC 2024
(Ubuntu 6.5.0-1010.13-raspi 6.5.8)
...
[ 2.612956] brcm-pcie 1000110000.pcie: link down
[ 2.617719] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[ 2.624391] pci 0000:00:00.0: PCI bridge to [bus 01]
...
[ 2.876967] brcm-pcie 1000120000.pcie: link up, 5.0 GT/s PCIe x4 (!SSC)
[ 2.883637] pci 0000:01:00.0: [1de4:0001] type 00 class 0x020000
...
After digging a bit, I found a discussion on the Raspberry's kernel github
[2]:
- a bug was introduced sometime in 6.2.x [3]
- a fix landed in 6.6.x [4]
- it boils down to a misused `readw_` instead of `readl_` in the
pcie-brcmstb driver
This made me think that given that the upcoming 24.04 is going to be on 6.7
or 6.8 kernel, the fix might be already there.
So I grabbed a build of the "6.7.0-1001.1"[5] kernel from the "Noble
Proposed" and installed it on the Mantic on my sd-card.
After reboot, the nvme drive was discovered and proper driver was loaded:
> uname -a
Linux pi 6.7.0-1001-raspi #1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jan 25 12:28:01
UTC 2024 aarch64 aarch64 aarch64 GNU/Linux
> lspci -nnk
0000:00:00.0 PCI bridge [0604]: Broadcom Inc. and subsidiaries Device
[14e4:2712] (rev 21)
Kernel driver in use: pcieport
0000:01:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co
Ltd NVMe SSD Controller SM961/PM961/SM963 [144d:a804]
Subsystem: Samsung Electronics Co Ltd SM963 2.5" NVMe PCIe SSD [144d:a801]
Kernel driver in use: nvme
Kernel modules: nvme
0001:00:00.0 PCI bridge [0604]: Broadcom Inc. and subsidiaries Device
[14e4:2712] (rev 21)
Kernel driver in use: pcieport
0001:01:00.0 Ethernet controller [0200]: Device [1de4:0001]
Kernel driver in use: rp1
> dmesg
...
[ 2.221266] brcm-pcie 1000110000.pcie: link up, 5.0 GT/s PCIe x1 (!SSC)
[ 2.227947] pci 0000:01:00.0: [144d:a804] type 00 class 0x010802
[ 2.234031] pci 0000:01:00.0: reg 0x10: [mem 0x1b00000000-0x1b00003fff
64bit]
[ 2.241396] pci 0000:01:00.0: 4.000 Gb/s available PCIe bandwidth, limited
by 5.0 GT/s PCIe x1 link at 0000:00:00.0 (capable of 31.504 Gb/s with 8.0 GT/s
PCIe x4 link)
...
[ 2.334202] nvme nvme0: pci function 0000:01:00.0
[ 2.338940] nvme 0000:01:00.0: enabling device (0000 -> 0002)
To summarize:
- RaspberryPI OS, kernel 6.1: OK
- Ubuntu 23.10, kernel 6.5.0-1010: FAILS
- Ubuntu 23.10, kernel 6.7.0-1001 from noble: OK
It would be great if the fix[4] for mdio could land 23.10 kernel
updates, so NVME drives could be used without waiting for the Noble
release later this year.
[1] https://geekworm.com/products/x1002
[2] https://github.com/raspberrypi/linux/issues/5873
[3]
https://github.com/raspberrypi/linux/commit/ca5dcc76314d1fa6d7307fd3b95039b08d2f2b97
[4]
https://github.com/raspberrypi/linux/commit/2677529a4f8a50c7567f50d67f368f1d138fb4d2
[5]
- https://launchpad.net/ubuntu/+source/linux-raspi/6.7.0-1001.1
-
http://launchpadlibrarian.net/711099177/linux-image-6.7.0-1001-raspi_6.7.0-1001.1_arm64.deb
-
http://launchpadlibrarian.net/711099172/linux-modules-6.7.0-1001-raspi_6.7.0-1001.1_arm64.deb
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