Needs to be done when the MC is set up.
v2: make consistent with other asics
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index 117c4835..ab0a104 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -249,7 +249,19 @@ static void gmc_v6_0_mc_program(struct amdgpu_device *adev)
dev_warn(adev->dev, "Wait for MC idle timedout !\n");
}
- WREG32(mmVGA_HDP_CONTROL, VGA_HDP_CONTROL__VGA_MEMORY_DISABLE_MASK);
+ if (adev->mode_info.num_crtc) {
+ u32 tmp;
+
+ /* Lockout access through VGA aperture*/
+ tmp = RREG32(mmVGA_HDP_CONTROL);
+ tmp |= VGA_HDP_CONTROL__VGA_MEMORY_DISABLE_MASK;
+ WREG32(mmVGA_HDP_CONTROL, tmp);
+
+ /* disable VGA render */
+ tmp = RREG32(mmVGA_RENDER_CONTROL);
+ tmp &= ~VGA_VSTATUS_CNTL;
+ WREG32(mmVGA_RENDER_CONTROL, tmp);
+ }
/* Update configuration */
WREG32(mmMC_VM_SYSTEM_APERTURE_LOW_ADDR,
adev->mc.vram_start >> 12);
--
2.5.5
