radeon driver on rawhide

[Gianluca Cecchi]

I'm evaluating the radeon driver on my card with rawhide.
It is a Sapphire X1900 crossfire edition card, that has 512MB of memory:

lspci -v
01:00.0 VGA compatible controller: ATI Technologies Inc R580 [Radeon X1900
XT] (Primary) (prog-if 00 [VGA controller])
        Subsystem: ATI Technologies Inc Unknown device 0d02
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at 80000000 (64-bit, prefetchable) [size=256M]
        Memory at 90200000 (64-bit, non-prefetchable) [size=64K]
        I/O ports at 2000 [size=256]
        Expansion ROM at 90220000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Express Endpoint, MSI 00
        Capabilities: [80] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable-

01:00.1 Display controller: ATI Technologies Inc R580 [Radeon X1900 XT]
(Secondary)
        Subsystem: ATI Technologies Inc Unknown device 0d03
        Flags: bus master, fast devsel, latency 0
        Memory at 90210000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Express Endpoint, MSI 00

At the end of March I could use only text installer in rawhide because both
vesa and radeon drivers failed to load.
With latest updates ( anaconda-11.4.0.71-1 ) radeon driver  is successfully
used and loads during installation. Well!
In the system, after install,  I see this in my Xorg log:


(II) RADEON(0): Detected total video RAM=524288K, accessible=262144K (PCI
BAR=262144K)
(--) RADEON(0): Mapped VideoRAM: 262144 kByte (64 bit DDR SDRAM)

So it seems I only use half the available memory, correct?
How to get rid of this problem, in case?
I'm using EXA accel method because it is the only one that allows xvideo
with radeon driver.
And it seems stable, at least on my configuration, but it is not the default
one at the moment...

Gianluca
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