ati radeon documentation

Alex Deucher alexdeucher at
Fri Feb 25 08:54:13 PST 2011

On Fri, Feb 25, 2011 at 11:41 AM, Corbin Simpson
<mostawesomedude at> wrote:
> On Fri, Feb 25, 2011 at 8:40 AM, Corbin Simpson
> <mostawesomedude at> wrote:
>> On Fri, Feb 25, 2011 at 7:47 AM, steven taffs <steventaffs at> wrote:
>>> Hi
>>> does anyone know where I can get documentation (manuals / datasheets) regarding the following radeon registers
>>> RADEON_WAIT_UNTIL   0x1720
>> I was going to suggest, but those registers
>> are far too old to be listed in those PDFs AFAIK. Going from memory...
>> RBBM_STATUS is the status register for the (IIRC) Render Buffer Blend
>> Manager, and essentially states the status of the complete 2D and 3D

FWIW, it's Register BackBone Manager.


>> pipelines at the end of the line. WAIT_UNTIL is a register that, when
>> written to, forces the entire chipset to sync to the specified flags
>> before continuing with command processing. It accepts flags like 2D,
>> 3D, and variations on those like 3D_CLEAN, etc. The kernel code is
>> quite illuminating.
>> So, those aren't really userspace registers. Why are you looking for
>> information on them? Maybe we could help you better if we knew what
>> you were working on.
>> ~ C.
> ...Too early in the morning, re-CCing the list...
> --
> When the facts change, I change my mind. What do you do, sir? ~ Keynes
> Corbin Simpson
> <MostAwesomeDude at>
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