UNKNOWN_CHIP with Navi31

[danielgarciagarcia]

Running radeontop 1.4 on Arch Linux (kernel version 6.1.2). The application doesn't recognize the chip name.

[clbr]

The git version has some more pci ids. You can check what your card is with "lspci -vnn".

[danielgarciagarcia]

Installed radeontop-git package and the GPU is still shown as UNKNOWN_CHIP.

The result of lspci -vnn is:

03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900 XTX] [1002:744c] (rev c8) (prog-if 00 [VGA controller])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:0e3b]
Flags: bus master, fast devsel, latency 0, IRQ 176
Memory at 4800000000 (64-bit, prefetchable) [size=32G]
Memory at 4400000000 (64-bit, prefetchable) [size=2M]
I/O ports at 3000 [size=256]
Memory at a0300000 (32-bit, non-prefetchable) [size=1M]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities:
Kernel driver in use: amdgpu

[clbr]

744c is indeed not yet in there. The last update was from the 6.1 kernel, so it may take some time.

[danielgarciagarcia]

Would you mind elaborating what do we have to wait for exactly? I don't know how the GPU data is retrieved by the application.

[clbr]

For the kernel to add it, and for me/someone else to do a sync.

[abc-mikey]

+1

[danielgarciagarcia]

Reported the missing PCI ID to the driver maintainers. I'll be keeping an eye when they upstream the new IDs to the kernel and report back here to update the r600_pci_ids.h list.

[danielgarciagarcia]

@clbr take a look to this response: https://gitlab.freedesktop.org/drm/amd/-/issues/2336#note_1713423

The PCI ID list from which r600_pci_ids.h populates apparently is no longer updated and the driver moved to a IP driven device enumeration. They recommend looking into this file from the Mesa project instead of amdgpu_drv.c file from the kernel radeontop currently uses.

[Umio-Yasuno]

radeontop uses PCI IDs (DeviceIDs) for detection of the AMDGPU chip.
However, Mesa3D RadeonSI driver uses family_id and chip_external_rev for detection.
I think the same method would be useful as a primary method or fallback.

https://gitlab.freedesktop.org/mesa/mesa/blob/main/src/amd/addrlib/src/amdgpu_asic_addr.h
https://gitlab.freedesktop.org/mesa/mesa/blob/main/src/amd/common/amd_family.c