Le 13/04/2011 14:10, Benjamin Herrenschmidt a Ãcrit :
On Wed, 2011-04-13 at 22:05 +1000, Benjamin Herrenschmidt wrote:
On Tue, 2011-04-12 at 10:01 +0200, CÃdric Cano wrote:
Hi
Here you are a patch that adds big endian support for rv730 in r600
classic mesa driver. The BE modifications are almost the same as the DRM
/ DDX driver modifications
(http://lists.freedesktop.org/archives/dri-devel/2011-February/008151.html).
I used the mesa-demos to test the driver status on big endian platform.
Nearly all demos renders the same as on Intel architecture.
Nevertheless, there are still some issues in glReadPixels (r600_blit)
with some formats. I can't figure out exactly what and when data must be
swapped (set_tex_resoures, set_render_target...). Review of the patch
would be greatly appreciated.
It seems that r600g will be the default for Mesa 7.11 so I'll try to
enable big endian support for Gallium now.
Cool stuff !
I'll try to test that one of these days on various ppc's
BTW. I see you used some FSL embedded board. Do you have your PCIe MMIO
space above 32-bit ? Last I looked, there was a bunch of fixing needing
to be done, among others in the TTM, to make that work.
I had some preliminary patches but they bitrot... mostly the issue is to
make sure than a phys_addr_t is used instead of an unsigned long
whenever it tries to store the physical address of an object.
Ben.
Hi Ben,
I don't use Freescale eval boards but our custom PowerPC design. We
didn't enable the 36-bit addressing mode yet.
CÃdric
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