drm/radeon/evergreen/btc/fusion: setup hdp to invalidate and flush when asked

[linux-flexiantxendom0-natty.git] / drivers / gpu / drm / radeon / evergreen.c

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 627ba86..5d6774a 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -1585,7 +1585,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
        u32 sq_stack_resource_mgmt_2;
        u32 sq_stack_resource_mgmt_3;
        u32 vgt_cache_invalidation;
-       u32 hdp_host_path_cntl;
+       u32 hdp_host_path_cntl, tmp;
        int i, j, num_shader_engines, ps_thread_count;
 
        switch (rdev->family) {
@@ -2145,6 +2145,10 @@ static void evergreen_gpu_init(struct radeon_device *rdev)
        for (i = SQ_ALU_CONST_BUFFER_SIZE_HS_0; i < 0x29000; i += 4)
                WREG32(i, 0);
 
+       tmp = RREG32(HDP_MISC_CNTL);
+       tmp |= HDP_FLUSH_INVALIDATE_CACHE;
+       WREG32(HDP_MISC_CNTL, tmp);
+
        hdp_host_path_cntl = RREG32(HDP_HOST_PATH_CNTL);
        WREG32(HDP_HOST_PATH_CNTL, hdp_host_path_cntl);