Am 13.06.2018 um 13:40 schrieb Rex Zhu:
Move the CG enablement out of delay worker thread.
1. CG/PG enablement are part of gpu hw ip initialize, we should
wait for them complete. otherwise, there are some potential conflicts,
for example, Suspend and CG enablement concurrently.
2. better run ib test after hw initialize completely. That is to say,
ib test should be after CG/PG enablement. otherwise, the test will
not cover the cg/pg/poweroff enable case.
Signed-off-by: Rex Zhu <rex....@amd.com>
Yeah, that thought came to my mind as well.
Essentially the IB test should simulate a submission from userspace to
make sure that the stack is working as expected. I think it was just
moved before CG/PG to avoid issues with that, which is actually not very
clever.
Patch is Reviewed-by: Christian König <christian.koe...@amd.com>, but
there could be some fallout we could need to deal with.
Thanks,
Christian.
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 9647f54..90b78c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1709,10 +1709,6 @@ static int amdgpu_device_ip_late_set_cg_state(struct
amdgpu_device *adev)
if (amdgpu_emu_mode == 1)
return 0;
- r = amdgpu_ib_ring_tests(adev);
- if (r)
- DRM_ERROR("ib ring test failed (%d).\n", r);
-
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
@@ -1793,6 +1789,9 @@ static int amdgpu_device_ip_late_init(struct
amdgpu_device *adev)
}
}
+ amdgpu_device_ip_late_set_cg_state(adev);
+ amdgpu_device_ip_late_set_pg_state(adev);
+
queue_delayed_work(system_wq, &adev->late_init_work,
msecs_to_jiffies(AMDGPU_RESUME_MS));
@@ -1921,8 +1920,11 @@ static void amdgpu_device_ip_late_init_func_handler(struct work_struct *work)
{
struct amdgpu_device *adev =
container_of(work, struct amdgpu_device, late_init_work.work);
- amdgpu_device_ip_late_set_cg_state(adev);
- amdgpu_device_ip_late_set_pg_state(adev);
+ int r;
+
+ r = amdgpu_ib_ring_tests(adev);
+ if (r)
+ DRM_ERROR("ib ring test failed (%d).\n", r);
}
/**
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