Reported by kemp chen, Jan 4, 2011

Address value using UBUNTU dump

@ubuntu:~$ dmesg | grep drm
[    9.896189] [drm] Initialized drm 1.1.0 20060810
[   11.096936] [drm] radeon defaulting to kernel modesetting.
[   11.096939] [drm] radeon kernel modesetting enabled.
[   11.097939] [drm] initializing kernel modesetting (JUNIPER 
0x1002:0x68B9).
[   11.098124] [drm] register mmio base: 0xFBCC0000
[   11.098127] [drm] register mmio size: 131072
[   11.098264] [drm] Detected VRAM RAM=512M, BAR=256M
[   11.098265] [drm] RAM width 128bits DDR
[   11.098409] [drm] radeon: 512M of VRAM memory ready
[   11.098412] [drm] radeon: 512M of GTT memory ready.
[   11.098510] [drm] radeon: irq initialized.
[   11.098512] [drm] GART: num cpu pages 131072, num gpu pages 
131072
[   11.099006] [drm] Loading JUNIPER Microcode
[   11.423459] [drm] ring test succeeded in 1 usecs
[   11.423534] [drm] radeon: ib pool ready.
[   11.423619] [drm] ib test succeeded in 0 usecs
[   11.423937] [drm] Radeon Display Connectors
[   11.423939] [drm] Connector 0:
[   11.423940] [drm]   HDMI-A
[   11.423942] [drm]   HPD5
[   11.423943] [drm]   DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 
0x6438 0x643c 0x643c
[   11.423945] [drm]   Encoders:
[   11.423947] [drm]     DFP1: INTERNAL_UNIPHY2
[   11.423949] [drm] Connector 1:
[   11.423950] [drm]   DVI-I
[   11.423951] [drm]   HPD6
[   11.423953] [drm]   DDC: 0x6450 0x6450 0x6454 0x6454 0x6458 
0x6458 0x645c 0x645c
[   11.423954] [drm]   Encoders:
[   11.423955] [drm]     DFP2: INTERNAL_UNIPHY
[   11.423956] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
[   11.423957] [drm] Connector 2:
[   11.423957] [drm]   VGA
[   11.423959] [drm]   DDC: 0x6460 0x6460 0x6464 0x6464 0x6468 
0x6468 0x646c 0x646c
[   11.423960] [drm]   Encoders:
[   11.423960] [drm]     CRT2: INTERNAL_KLDSCP_DAC2
[   11.480308] [drm] Internal thermal controller with fan control
[   11.480386] [drm] radeon: power management initialized
[   11.568547] [drm] fb mappable at 0xE0141000
[   11.568550] [drm] vram apper at 0xE0000000
[   11.568551] [drm] size 8294400
[   11.568552] [drm] fb depth is 24
[   11.568553] [drm]    pitch is 7680
[   11.984659] fb0: radeondrmfb frame buffer device
[   11.984661] drm: registered panic notifier
[   11.984674] [drm] Initialized radeon 2.7.0 20080528 for 
0000:01:00.0 on minor 0