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drm/amdgpu/gmc6: disable legacy vga features in gmc init (v2) 

Needs to be done when the MC is set up.

v2: make consistent with other asics

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-07-24 22:52:12 -04:00
parent 7b8bd6bb42
commit 03ba88cfdc
1 changed files with 13 additions and 1 deletions
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14
drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
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@ -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);