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drm/amdgpu/gmc7: disable legacy vga features in gmc init

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Needs to be done when the MC is set up.

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 22:58:36 -04:00
parent 03ba88cfdc
commit 96d78e3734
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
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@ -37,6 +37,9 @@
#include "oss/oss_2_0_d.h"
#include "oss/oss_2_0_sh_mask.h"
#include "dce/dce_8_0_d.h"
#include "dce/dce_8_0_sh_mask.h"
#include "amdgpu_atombios.h"
static void gmc_v7_0_set_gart_funcs(struct amdgpu_device *adev);
@ -273,6 +276,17 @@ static void gmc_v7_0_mc_program(struct amdgpu_device *adev)
if (gmc_v7_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);