[PATCH] radeon: pad CS to 8 DW

Alex Deucher alexdeucher at gmail.com
Fri Sep 6 13:01:20 PDT 2013


Aligns the IB to 8 DWs.  The aligns the IB to the
CP fetch size.  r6xx also require at least 4 DW
alignment to avoid a hw bug.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 radeon/radeon_cs_gem.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/radeon/radeon_cs_gem.c b/radeon/radeon_cs_gem.c
index b963140..b87c6b1 100644
--- a/radeon/radeon_cs_gem.c
+++ b/radeon/radeon_cs_gem.c
@@ -425,6 +425,9 @@ static int cs_gem_emit(struct radeon_cs_int *cs)
     unsigned i;
     int r;
 
+    while (cs->cdw & 7)
+	radeon_cs_write_dword((struct radeon_cs *)cs, 0x80000000);
+
 #if CS_BOF_DUMP
     cs_gem_dump_bof(cs);
 #endif
-- 
1.8.3.1



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