amdgpu fails to run VF for s7150x2 device

[Alexander Frolov]

Hi all!

I am running S7150x2 with single VF enabled. VF is created with gim.ko 
and passed through to the Ubuntu 18.04 LTE guest. The default driver 
(amdgpu) fails to run VF.
The dmesg output is following:

[    5.029131] [drm] amdgpu kernel modesetting enabled.
[    6.084808] [drm] Device Version 0.0
[    6.085153] [drm] Compression level 0 log level 0
[    6.085472] [drm] 12286 io pages at offset 0x1000000
[    6.085797] [drm] 16777216 byte draw area at offset 0x0
[    6.086141] [drm] RAM header offset: 0x3ffe000
[    6.088019] [drm] qxl: 16M of VRAM memory size
[    6.088497] [drm] qxl: 63M of IO pages memory ready (VRAM domain)
[    6.088999] [drm] qxl: 64M of Surface memory size
[    6.146983] [drm] main mem slot 1 [f4000000,3ffe000]
[    6.147415] [drm] surface mem slot 2 [f8000000,4000000]
[    6.148248] [drm] fb mappable at 0xF4000000, size 3145728
[    6.148672] [drm] fb: depth 24, pitch 4096, width 1024, height 768
[    6.149354] fbcon: qxldrmfb (fb0) is primary device
[    6.161713] qxl 0000:00:02.0: fb0: qxldrmfb frame buffer device
[    6.180939] [drm] Initialized qxl 0.1.0 20120117 for 0000:00:02.0 on 
minor 0
[    6.188972] [drm] initializing kernel modesetting (TONGA 
0x1002:0x692F 0x0000:0x0000 0x00).
[    6.189153] [drm] register mmio base: 0xFC000000
[    6.189173] [drm] register mmio size: 4194304
[    6.189391] [drm] PCI I/O BAR is not found.
[    6.236438] [drm] PCI I/O BAR is not found. Using MMIO to access ATOM 
BIOS
[    6.236745] [drm] GPU post is not needed
[    6.236764] [drm] Changing default dispclk from 600Mhz to 625Mhz
[    6.237744] [drm] vm size is 64 GB, block size is 13-bit, fragment 
size is 9-bit
[    6.237965] amdgpu 0000:00:08.0: VRAM: 7888M 0x0000000000000000 - 
0x00000001ECFFFFFF (7888M used)
[    6.237999] amdgpu 0000:00:08.0: GTT: 1024M 0x00000001ED000000 - 
0x000000022CFFFFFF
[    6.238266] [drm] Detected VRAM RAM=7888M, BAR=256M
[    6.238287] [drm] RAM width 256bits GDDR5
[    6.238453] [drm] amdgpu: 7888M of VRAM memory ready
[    6.238566] [drm] amdgpu: 7888M of GTT memory ready.
[    6.240119] [drm] GART: num cpu pages 262144, num gpu pages 262144
[    6.241330] [drm] PCIE GART of 1024M enabled (table at 
0x0000000000040000).
[    6.242955] amdgpu 0000:00:08.0: amdgpu: using MSI.
[    6.243734] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    6.244473] [drm] Driver supports precise vblank timestamp query.
[    6.245645] [drm] amdgpu: irq initialized.
[    6.246424] amdgpu: [powerplay] amdgpu: powerplay sw initialized
[    6.247940] amdgpu 0000:00:08.0: fence driver on ring 0 use gpu addr 
0x00000001ed400040, cpu addr 0x        (ptrval)
[    6.248921] amdgpu 0000:00:08.0: fence driver on ring 1 use gpu addr 
0x00000001ed4000c0, cpu addr 0x        (ptrval)
[    6.249797] amdgpu 0000:00:08.0: fence driver on ring 2 use gpu addr 
0x00000001ed400140, cpu addr 0x        (ptrval)
[    6.250741] amdgpu 0000:00:08.0: fence driver on ring 3 use gpu addr 
0x00000001ed4001c0, cpu addr 0x        (ptrval)
[    6.251577] amdgpu 0000:00:08.0: fence driver on ring 4 use gpu addr 
0x00000001ed400240, cpu addr 0x        (ptrval)
[    6.252479] amdgpu 0000:00:08.0: fence driver on ring 5 use gpu addr 
0x00000001ed4002c0, cpu addr 0x        (ptrval)
[    6.253379] amdgpu 0000:00:08.0: fence driver on ring 6 use gpu addr 
0x00000001ed400340, cpu addr 0x        (ptrval)
[    6.254243] amdgpu 0000:00:08.0: fence driver on ring 7 use gpu addr 
0x00000001ed4003c0, cpu addr 0x        (ptrval)
[    6.255062] amdgpu 0000:00:08.0: fence driver on ring 8 use gpu addr 
0x00000001ed400440, cpu addr 0x        (ptrval)
[    6.255767] amdgpu 0000:00:08.0: fence driver on ring 9 use gpu addr 
0x00000001ed4004e0, cpu addr 0x        (ptrval)
[    6.257432] amdgpu 0000:00:08.0: fence driver on ring 10 use gpu addr 
0x00000001ed400560, cpu addr 0x        (ptrval)
[    6.258289] amdgpu 0000:00:08.0: fence driver on ring 11 use gpu addr 
0x00000001ed4005e0, cpu addr 0x        (ptrval)
[    6.267196] [drm] ring test on 0 succeeded in 15 usecs
[    6.460505] [drm:gfx_v8_0_kiq_resume [amdgpu]] *ERROR* KCQ enable 
failed (scratch(0xC040)=0xCAFEDEAD)
[    6.461246] [drm:amdgpu_device_init [amdgpu]] *ERROR* hw_init of IP 
block <gfx_v8_0> failed -22
[    6.461933] amdgpu 0000:00:08.0: amdgpu_init failed
[    6.465365] amdgpu 0000:00:08.0:         (ptrval) unpin not necessary
[    6.466753] [drm] amdgpu: ttm finalized
[    6.472417] amdgpu 0000:00:08.0: Fatal error during GPU init
[   18.400713] [drm] amdgpu: finishing device.
[   18.411047] amdgpu: probe of 0000:00:08.0 failed with error -22

Does amdgpu support VF mode? Any help will be appreciated!
Thank you!

Best,
   Alexander Frolov