linux.git/drivers/gpu/drm/amd/amdkfd, branch v4.19-rc2

drm/amdkfd: Call kfd2kgd.set_compute_idle

2018-07-16T23:10:37+00:00

User mode queue submissions don't go through KFD. Therefore we don't
know exactly when compute is idle or not idle. We use the existence
of user mode queues on a device as an approximation.

register_process is called when the first queue of a process is
created. Conversely unregister_process is called when the last queue
is destroyed. The first process that is registered takes compute
out of idle. The last process that is unregisters sets compute back
to idle.

Signed-off-by: Felix Kuehling 
Reviewed-by: Eric Huang 
Reviewed-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Add CU-masking ioctl to KFD

2018-07-14T23:05:59+00:00

CU-masking allows a KFD client to control the set of CUs used by a
user mode queue for executing compute dispatches. This can be used
for optimizing the partitioning of the GPU and minimize conflicts
between concurrent tasks.

Signed-off-by: Flora Cui 
Signed-off-by: Kent Russell 
Signed-off-by: Eric Huang 
Signed-off-by: Felix Kuehling 
Acked-by: Oded Gabbay 
Signed-off-by: Oded Gabbay

drm/amdkfd: Enable Raven for KFD

2018-07-13T20:17:48+00:00

Add DID and kfd_device_info for Raven.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Optimize out some duplicated code in kfd_signal_iommu_event()

2018-07-13T20:17:47+00:00

memory_exception_data is already initialized for not-present faults.
It only needs to be overridden for permission faults.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Workaround to accommodate Raven too many PPR issue

2018-07-13T20:17:46+00:00

On Raven multiple PPRs can be queued up by the hardware. When the
first of those requests is handled by the IOMMU driver, the memory
access succeeds. After that the application may be done with the
memory and unmap it. At that point the page table entries are
invalidated, but there are still outstanding duplicate PPRs for those
addresses. When the IOMMU driver processes those duplicate requests,
it finds invalid page table entries and triggers an invalid PPR fault.

As a workaround, don't signal invalid PPR faults on Raven to avoid
segfaulting applications that haven't done anything wrong. As a side
effect, real GPU memory access faults may go unnoticed by the
application.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Avoid flooding dmesg on Raven due to IOMMU issues

2018-07-13T20:17:45+00:00

On Raven Invalid PPRs (peripheral page requests) can be reported
because multiple PPRs can be still queued when memory is freed.
Apply a rate limit to avoid flooding the log in this case.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Make SDMA engine number an ASIC-dependent variable

2018-07-13T20:17:44+00:00

On Raven there is only one SDMA engine instead of previously assumed two,
so we need to adapt our code to this new scenario.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Consolidate duplicate memory banks info in topology

2018-07-13T20:17:43+00:00

If there are several memory banks that has the same properties in CRAT,
we aggregate them into one memory bank. This cleans up memory banks on
APUs (e.g. Raven) where the CRAT reports each memory channel as a
separate bank. This only confuses user mode, which only deals with
virtual memory.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Alex Deucher 
Signed-off-by: Oded Gabbay

drm/amdkfd: Clean up reference of radeon

2018-07-12T02:33:08+00:00

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Christian König 
Signed-off-by: Oded Gabbay

drm/amdkfd: Replace mqd with mqd_mgr as the variable name for mqd_manager

2018-07-12T02:33:07+00:00

This will make reading code much easier.

Signed-off-by: Yong Zhao 
Reviewed-by: Felix Kuehling 
Signed-off-by: Felix Kuehling 
Acked-by: Christian König 
Signed-off-by: Oded Gabbay