drm/amdgpu: assign fb_start/end in mmhub v9.4 interface (6c54afc7) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -39,10 +39,17 @@ u64 mmhub_v9_4_get_fb_location(struct amdgpu_device *adev)
		{
		/* The base should be same b/t 2 mmhubs on Acrturus. Read one here. */
		u64 base = RREG32_SOC15(MMHUB, 0, mmVMSHAREDVC0_MC_VM_FB_LOCATION_BASE);
		u64 top = RREG32_SOC15(MMHUB, 0, mmVMSHAREDVC0_MC_VM_FB_LOCATION_TOP);

		base &= VMSHAREDVC0_MC_VM_FB_LOCATION_BASE__FB_BASE_MASK;
		base <<= 24;

		top &= VMSHAREDVC0_MC_VM_FB_LOCATION_TOP__FB_TOP_MASK;
		top <<= 24;

		adev->gmc.fb_start = base;
		adev->gmc.fb_end = top;

		return base;
		}