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drm/amdgpu: add check_soft_reset ip func

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It is used to identify if the ip block is hang.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou
2016-07-15 11:19:20 +08:00
committed by Alex Deucher
parent 5c6c201ccb
commit 63fbf42f73
3 changed files with 26 additions and 0 deletions
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23
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -1937,6 +1937,24 @@ int amdgpu_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
return 0;
}
static bool amdgpu_check_soft_reset(struct amdgpu_device *adev)
{
int i;
bool asic_hang = false;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_block_status[i].valid)
continue;
if (adev->ip_blocks[i].funcs->check_soft_reset)
adev->ip_blocks[i].funcs->check_soft_reset(adev);
if (adev->ip_block_status[i].hang) {
DRM_INFO("IP block:%d is hang!\n", i);
asic_hang = true;
}
}
return asic_hang;
}
/**
* amdgpu_gpu_reset - reset the asic
*
@@ -1950,6 +1968,11 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
int i, r;
int resched;
if (!amdgpu_check_soft_reset(adev)) {
DRM_INFO("No hardware hang detected. Did some blocks stall?\n");
return 0;
}
atomic_inc(&adev->gpu_reset_counter);
/* block TTM */