On Don, 2012-09-06 at 17:41 +0300, Meelis Roos wrote:
This is with initialyy unmodified 3.6.0-rc4-00101-g0809095 kernel in Ultra 10 (clean, without my "Video RAM" hack that I talked in other sparclinux posts). When I saw that Sun XVR-100 was detected fine by the kernel, I compiled radeon drm driver with modesetting enabled and tried it:
[drm] radeon defaulting to kernel modesetting. [drm] radeon kernel modesetting enabled. PCI: Enabling device: (0000:02:02.0), cmd 82 [drm] initializing kernel modesetting (RV100 0x1002:0x5159 0x1002:0x0908). [drm] register mmio base: 0x10000000 [drm] register mmio size: 32768 [drm:radeon_device_init] *ERROR* Unable to find PCI I/O BAR
And here the machine hangs. Debugging printk-s reveal that it does not find any active I/O port resources and then continues into initializing the card. Down in igp_read_bios_from_vram() it successfully ioremaps memory region 0 (vram_base=1ff08000000 and size=40000) and tries to read 2 bytes from there and hangs on reading bios[0].
Is the card initialized by OpenFirmware? E.g., does it display anything before the kernel boots?
With radeon.modeset=0, it boots [...]
Does X work with DRI enabled then?