otherwise there will be DMAR reading error comes out from CP since
GFX is still alive and CPC's WPTR_POLL is still enabled, which would
lead to DMAR read error.
fix:
we can hault CPG after hw_fini, but cannot halt CPC becaues KIQ
stil need to be alive to let RLCV invoke, but its WPTR_POLL could
be disabled.
Change-Id: Ia60ee54901531f737d09063bf2037630e7c94771
Signed-off-by: Monk Liu <monk....@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index e9cc03e..793db9f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2961,7 +2961,8 @@ static int gfx_v9_0_hw_fini(void *handle)
gfx_v9_0_kcq_disable(&adev->gfx.kiq.ring,
&adev->gfx.compute_ring[i]);
if (amdgpu_sriov_vf(adev)) {
- pr_debug("For SRIOV client, shouldn't do anything.\n");
+ gfx_v9_0_cp_gfx_enable(adev, false);
+ WREG32_FIELD15(GC, 0, CP_PQ_WPTR_POLL_CNTL, EN, 0);
return 0;
}
gfx_v9_0_cp_enable(adev, false);
--
2.7.4
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