[PATCH V2 12/16] drm/radeon: Make radeon card usable for Loongson.
Michel Dänzer
michel at daenzer.net
Tue Jun 19 00:56:45 PDT 2012
On Die, 2012-06-19 at 14:50 +0800, Huacai Chen wrote:
> 1, Use 32-bit DMA as a workaround (Loongson has a hardware bug that it
> doesn't support DMA address above 4GB).
> 2, Read vga bios offered by system firmware.
> 3, Handle io prot correctly for MIPS.
> 4, Don't use swiotlb on Loongson machines (when use swiotlb, GPU reset
> occurs at resume from suspend).
Sounds like this should be split up into smaller patches.
> diff --git a/include/drm/drm_sarea.h b/include/drm/drm_sarea.h
> index ee5389d..1d1a858 100644
> --- a/include/drm/drm_sarea.h
> +++ b/include/drm/drm_sarea.h
> @@ -37,6 +37,8 @@
> /* SAREA area needs to be at least a page */
> #if defined(__alpha__)
> #define SAREA_MAX 0x2000U
> +#elif defined(__mips__)
> +#define SAREA_MAX 0x4000U
> #elif defined(__ia64__)
> #define SAREA_MAX 0x10000U /* 64kB */
> #else
Also, this change doesn't seem to be accounted for in the commit log.
--
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Debian, X and DRI developer
More information about the dri-devel
mailing list