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drm/ast: switch to using CACHED by default for sysram 

This fixes problems on ppc64 platforms, where we could end up using
a WC mapping for migrating BOs with memcpy, when really we want to
use cached memory.

Tested-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2014-09-12 14:32:40 +10:00
parent fd7e0d7192
commit a9d6dd2554
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/ast/ast_ttm.c
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@ -300,9 +300,9 @@ void ast_ttm_placement(struct ast_bo *bo, int domain)
if (domain & TTM_PL_FLAG_VRAM)
bo->placements[c++].flags = TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
if (domain & TTM_PL_FLAG_SYSTEM)
bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
if (!c)
bo->placements[c++].flags = TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
bo->placements[c++].flags = TTM_PL_FLAG_CACHED | TTM_PL_FLAG_SYSTEM;
bo->placement.num_placement = c;
bo->placement.num_busy_placement = c;
for (i = 0; i < c; ++i) {