RE: [PATCH] drm/amdgpu/sriov: Need to clear kiq position

["Liu, Monk" <Monk.Liu@xxxxxxx>]

Acked-by: Monk.Liu

_____________________________________
Monk Liu|GPU Virtualization Team |AMD


-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Emily Deng
Sent: Thursday, June 11, 2020 2:02 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Deng, Emily <Emily.Deng@xxxxxxx>
Subject: [PATCH] drm/amdgpu/sriov: Need to clear kiq position

As will clear vf fw during unload driver, to avoid idle fail. Need to clear KIQ portion also.

Signed-off-by: Emily Deng <Emily.Deng@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index e9045dd..323285e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -6876,6 +6876,7 @@ static int gfx_v10_0_hw_fini(void *handle)  {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	int r;
+	uint32_t tmp;
 
 	amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0);
 	amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0); @@ -6890,6 +6891,11 @@ static int gfx_v10_0_hw_fini(void *handle)
 		DRM_ERROR("KCQ disable failed\n");
 	if (amdgpu_sriov_vf(adev)) {
 		gfx_v10_0_cp_gfx_enable(adev, false);
+		/* Program KIQ position of RLC_CP_SCHEDULERS during destroy */
+		tmp = RREG32_SOC15(GC, 0, mmRLC_CP_SCHEDULERS);
+		tmp &= 0xffffff00;
+		WREG32_SOC15(GC, 0, mmRLC_CP_SCHEDULERS, tmp);
+
 		return 0;
 	}
 	gfx_v10_0_cp_enable(adev, false);
--
2.7.4

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