Needs to be done when the MC is set up.
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 677181f..c22899a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -29,6 +29,8 @@
#include "vega10/HDP/hdp_4_0_offset.h"
#include "vega10/HDP/hdp_4_0_sh_mask.h"
#include "vega10/GC/gc_9_0_sh_mask.h"
+#include "vega10/DC/dce_12_0_offset.h"
+#include "vega10/DC/dce_12_0_sh_mask.h"
#include "vega10/vega10_enum.h"
#include "soc15_common.h"
@@ -750,6 +752,20 @@ static int gmc_v9_0_hw_init(void *handle)
/* The sequence of these two function calls matters.*/
gmc_v9_0_init_golden_registers(adev);
+ if (adev->mode_info.num_crtc) {
+ u32 tmp;
+
+ /* Lockout access through VGA aperture*/
+ tmp = RREG32_SOC15(DCE, 0, mmVGA_HDP_CONTROL);
+ tmp = REG_SET_FIELD(tmp, VGA_HDP_CONTROL, VGA_MEMORY_DISABLE, 1);
+ WREG32_SOC15(DCE, 0, mmVGA_HDP_CONTROL, tmp);
+
+ /* disable VGA render */
+ tmp = RREG32_SOC15(DCE, 0, mmVGA_RENDER_CONTROL);
+ tmp = REG_SET_FIELD(tmp, VGA_RENDER_CONTROL, VGA_VSTATUS_CNTL, 0);
+ WREG32_SOC15(DCE, 0, mmVGA_RENDER_CONTROL, tmp);
+ }
+
r = gmc_v9_0_gart_enable(adev);
return r;
--
2.5.5
