From: Dave Airlie Date: Mon, 15 Feb 2010 05:54:45 +0000 (+1000) Subject: drm/radeon/kms: flush HDP cache on GART table updates. X-Git-Tag: v2.6.34-rc1~209^2~10^2~29 X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=2e98f10a7a87ebae4dcc3949028a32008b46ceef;p=net-next-2.6.git drm/radeon/kms: flush HDP cache on GART table updates. Suggested by Alex Deucher @ AMD Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 4facbab2045..6434d6af7d5 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -370,6 +370,9 @@ void r600_pcie_gart_tlb_flush(struct radeon_device *rdev) unsigned i; u32 tmp; + /* flush hdp cache so updates hit vram */ + WREG32(R_005480_HDP_MEM_COHERENCY_FLUSH_CNTL, 0x1); + WREG32(VM_CONTEXT0_INVALIDATION_LOW_ADDR, rdev->mc.gtt_start >> 12); WREG32(VM_CONTEXT0_INVALIDATION_HIGH_ADDR, (rdev->mc.gtt_end - 1) >> 12); WREG32(VM_CONTEXT0_REQUEST_RESPONSE, REQUEST_TYPE(1));