El Mar 25 Sep 2001 07:27, escribiste:
> On Sun, 23 Sep 2001, Manuel Teira wrote:
> > Perhaps we should work with the latest DRI trunk. Do you think it worth
> > the effort?
>
> It seems that most of the changes I noticed have been in the drivers for
> the newer cards, but I haven't really looked at it that closely at this
> point. I'm certainly no authority on this, I'm still trying to comprehend
> everything. ;)
>
> > A logical analysis: The reset engine code is ORing the BUS_CNTL
> > with 0x00a00000, right? But we are suspecting that the component
> > 0x00800000 could be read only, and after looking at the code and the
> > defines, it seems that this bit is redefined for the newer cards. Well,
> > if the bit were read-only, the DRI_INFO for that register could learn us
> > something. In my laptop, the BUS_CNTL before and after the DMA tests is
> > always:
> > BUS_CNTL = 0x7b3fa001
> > As you can see, the 0x00800000 is not set, and the 0x00200000 is set.
> > Perhaps this is meaning that this bit is read-only and, so, the supposed
> > obsoleted BUS_LAT16X ?
> >
> > What value is holding your BUS_CNTL ?
>
> I get 0x7b3fa101 before the test, which is the same except that bit 8
> (reserved) is set, and after the DMA test (with the new code that resets
> the engine) I get 0x7b3fa141 -- BUS_MASTER_DIS is set by the reset code.
Yes, excuse me. I'm getting 0x7b3fa041 after the test. Anyway, your results
match my suposition that BUS_LAT16X is still present.
Regards.
-- M. Teira
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