On 01/03/2012 07:44 PM, Alex Williamson wrote:
Yep, that's what I would have guessed, there's a 256MB resource. I'm
not sure if the seabios you're using is mapping the MMIO hole
efficiently enough to handle that. Can you test on new upstream
qemu-kvm? Thanks,
I'm not done poking the system, but I thought I'd send an update.
I started with an update to seabios, from the bundled version
0.6.1.2-8.el6 to a rebuilt package from F16, 0.6.2-3.el6. That's enough
to get the guest to boot with the pass-through video card. It doesn't
work, currently, and I'm pretty sure that's because I can't read the ROM
from the card. I'm going to look around for a solution to that and will
update again.
lspci in the guest shows the device:
00:07.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon
HD 3470 (prog-if 00 [VGA controller])
Subsystem: Dell Device 3243
Physical Slot: 7
Flags: fast devsel, IRQ 11
Memory at e0000000 (32-bit, prefetchable) [size=256M]
Memory at f2050000 (32-bit, non-prefetchable) [size=64K]
I/O ports at c100 [size=256]
Expansion ROM at <unassigned> [disabled]
Capabilities: [58] Express Legacy Endpoint, MSI 00
Capabilities: [50] Power Management version 3
Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit-
Kernel modules: radeon
dmesg reports some errors:
[ 1.048791] [drm] Initialized drm 1.1.0 20060810
[ 1.066131] [drm] radeon defaulting to kernel modesetting.
[ 1.066133] [drm] radeon kernel modesetting enabled.
[ 1.066220] radeon 0000:00:07.0: PCI INT A -> Link[LNKC] ->
GSI 11 (level, high) -> IRQ 11
[ 1.066267] radeon 0000:00:07.0: setting latency timer to 64
[ 1.066611] [drm] initializing kernel modesetting
(RV620 0x1002:0x95C0 0x1028:0x3243).
[ 1.066774] [drm] register mmio base: 0xF2050000
[ 1.066776] [drm] register mmio size: 65536
[ 1.066884] radeon 0000:00:07.0: Expecting atombios for R600 GPU
[ 1.066886] radeon 0000:00:07.0: Fatal error during GPU init
[ 1.066888] [drm] radeon: finishing device.
[ 1.066890] [TTM] Memory type 2 has not been initialized.
[ 1.067924] vga_switcheroo: disabled
[ 1.068070] radeon 0000:00:07.0: PCI INT A disabled
[ 1.068075] radeon: probe of 0000:00:07.0 failed with error -22
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