From: pding <Pixel.Ding@amd.com>
Date: Thu, 12 Oct 2017 13:53:20 +0800
Subject: drm/amdgpu: report more amdgpu_fence_info
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Git-commit: e71de0766191d32648cf12dfb2f53f05e52b2dcc
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Only for GFX ring. This can help checking MCBP feature.
The fence at the end of the frame will indicate the completion status.
If the frame completed normally, the fence is written to the address
given in the EVENT_WRITE_EOP packet. If preemption occurred in the
previous IB the address is adjusted by 2 DWs. If work submitted in the
frame was reset before completion, the fence address is adjusted by
four DWs. In the case that preemption occurred, and before preemption
completed a reset was initiated, the address will be adjusted with six
DWs
Signed-off-by: pding <Pixel.Ding@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -641,6 +641,19 @@ static int amdgpu_debugfs_fence_info(str
atomic_read(&ring->fence_drv.last_seq));
seq_printf(m, "Last emitted 0x%08x\n",
ring->fence_drv.sync_seq);
+
+ if (ring->funcs->type != AMDGPU_RING_TYPE_GFX)
+ continue;
+
+ /* set in CP_VMID_PREEMPT and preemption occurred */
+ seq_printf(m, "Last preempted 0x%08x\n",
+ le32_to_cpu(*(ring->fence_drv.cpu_addr + 2)));
+ /* set in CP_VMID_RESET and reset occurred */
+ seq_printf(m, "Last reset 0x%08x\n",
+ le32_to_cpu(*(ring->fence_drv.cpu_addr + 4)));
+ /* Both preemption and reset occurred */
+ seq_printf(m, "Last both 0x%08x\n",
+ le32_to_cpu(*(ring->fence_drv.cpu_addr + 6)));
}
return 0;
}