[Help][RS780E][mipsel]Screen corruption sometimes

Michel Dänzer michel at daenzer.net
Mon Sep 12 23:28:35 PDT 2011

On Die, 2011-09-13 at 01:33 -0400, Alex Deucher wrote: 
> 2011/9/13 Chen Jie <chenj at lemote.com>:
> >
> > We got a patch from the BSP team of the CPU vendor, which seems solved
> > the problem.
> >
> > The patch replaces both RADEON_GPU_PAGE_SIZE  in function
> > r600_copy_blit() with PAGE_SIZE. (We use 16K PAGE_SIZE, and
> >
> > Any idea? If it had copy problems, why bo moving test couldn't detect
> > it? Also, after applied the patch, the bo moving test was still
> > passed, curious.
> The patch is correct.   r600_copy_blit() takes CPU pages as a
> parameter and the r600_blit_*_copy() functions take bytes as a
> parameter.  evergreen_copy_blit() needs a similar fix.

I think we should rather change radeon_move_blit(), r100_copy_blit() and
r200_copy_dma() to deal with RADEON_GPU_PAGE_SIZE instead of PAGE_SIZE.
E.g. r100_copy_blit() can't handle an arbitrary PAGE_SIZE.

Earthling Michel Dänzer           |                   http://www.amd.com
Libre software enthusiast         |          Debian, X and DRI developer

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