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drm/amdgpu: report more amdgpu_fence_info

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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>
This commit is contained in:
pding 2017-10-12 13:53:20 +08:00 committed by Alex Deucher
parent f993d628a2
commit e71de07661
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
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@ -641,6 +641,19 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data)
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;
}