From 2e2bfd90fa2b1be480a655337b2d25410323f43e Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 24 Jul 2017 23:05:20 -0400 Subject: [PATCH] drm/amdgpu/gmc8: disable legacy vga features in gmc init MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Needs to be done when the MC is set up. Acked-by: Christian König Acked-by: Harry Wentland Reviewed-by: Junwei Zhang Reviewed-by: Michel Dänzer Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c index c9dfe15..85c937b 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c @@ -35,6 +35,9 @@ #include "oss/oss_3_0_d.h" #include "oss/oss_3_0_sh_mask.h" +#include "dce/dce_10_0_d.h" +#include "dce/dce_10_0_sh_mask.h" + #include "vid.h" #include "vi.h" @@ -438,6 +441,17 @@ static void gmc_v8_0_mc_program(struct amdgpu_device *adev) if (gmc_v8_0_wait_for_idle((void *)adev)) { dev_warn(adev->dev, "Wait for MC idle timedout !\n"); } + if (adev->mode_info.num_crtc) { + /* Lockout access through VGA aperture*/ + tmp = RREG32(mmVGA_HDP_CONTROL); + tmp = REG_SET_FIELD(tmp, VGA_HDP_CONTROL, VGA_MEMORY_DISABLE, 1); + WREG32(mmVGA_HDP_CONTROL, tmp); + + /* disable VGA render */ + tmp = RREG32(mmVGA_RENDER_CONTROL); + tmp = REG_SET_FIELD(tmp, VGA_RENDER_CONTROL, VGA_VSTATUS_CNTL, 0); + WREG32(mmVGA_RENDER_CONTROL, tmp); + } /* Update configuration */ WREG32(mmMC_VM_SYSTEM_APERTURE_LOW_ADDR, adev->mc.vram_start >> 12); -- 2.7.4