Commit f81b86a0 authored Oct 07, 2019 by Oak Zeng Committed by Alex Deucher Oct 10, 2019

drm/amdgpu: Enable gfx cache probing on HDP write for arcturus



This allows gfx cache to be probed and invalidated (for none-dirty cache lines)
on a HDP write (from either another GPU or CPU). This should work only for the
memory mapped as RW memory type newly added for arcturus, to achieve some cache
coherence b/t multiple memory clients.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Acked-by: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent cb1545f7

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1194,6 +1194,9 @@ static int gmc_v9_0_hw_init(void *handle)
		/* TODO for renoir */
		mmhub_v1_0_update_power_gating(adev, true);
		break;
		case CHIP_ARCTURUS:
		WREG32_FIELD15(HDP, 0, HDP_MMHUB_CNTL, HDP_MMHUB_GCC, 1);
		break;
		default:
		break;
		}

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