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drm/radeon: only enable swiotlb path when need v2

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swiotlb expands our card accessing range, but its path always is slower
than ttm pool allocation.
So add condition to use it.
v2: move a bit later

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180209024410.1469-3-david1.zhou@amd.com
This commit is contained in:
Chunming Zhou
2018-02-09 10:44:10 +08:00
committed by Alex Deucher
parent fd5fd480dd
commit 1bc3d3cce8
3 changed files with 6 additions and 3 deletions
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drivers/gpu/drm/radeon/radeon.h
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@@ -2387,6 +2387,7 @@ struct radeon_device {
struct radeon_dummy_page dummy_page;
bool shutdown;
bool need_dma32;
bool need_swiotlb;
bool accel_working;
bool fastfb_working; /* IGP feature*/
bool needs_reset, in_reset;