diff options
| author | Jonathan Kim <jonathan.kim@amd.com> | 2022-04-22 19:26:18 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 19:36:17 +0300 |
| commit | 12fb1ad70d65edc3405884792d044fa79df7244f (patch) | |
| tree | 4718cd398489ee00a9275922a2372b86f791cfea /drivers/gpu/drm/amd/amdkfd/kfd_debug.h | |
| parent | a37d23f816b18a324c24d066d5bc453308913bf9 (diff) | |
| download | linux-12fb1ad70d65edc3405884792d044fa79df7244f.tar.xz | |
drm/amdkfd: update process interrupt handling for debug events
The debugger must be notified by any debugger subscribed exception
that comes from hardware interrupts.
If a debugger session exits, any exceptions it subscribed to may still
have interrupts in the interrupt ring buffer or KGD/KFD pipeline.
To prevent a new session from inheriting stale interrupts, when a new
queue is created, open an interrupt drain and allow the IH ring to drain
from a timestamped checkpoint. Then inject a custom IV so that once
the custom IV is picked up by the KFD, it's safe to close the drain
and proceed with queue creation.
The drain must also be on debug disable as SW interrupts may still
be processed. Drain at this time and clear all the exception status.
The debugger may also not be attached nor subscibed to certain
exceptions so forward them directly to the runtime.
GFX10 also requires its own IV processing, hence the creation of
kfd_int_process_v10.c. This is because the IV from SQ interrupts are
packed into a new continguous format unlike GFX9. To make this clear,
a separate interrupting handling code file was created.
Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_debug.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_debug.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h index fca928564948..5153ccbd7fd1 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.h @@ -27,6 +27,12 @@ void kfd_dbg_trap_deactivate(struct kfd_process *target, bool unwind, int unwind_count); int kfd_dbg_trap_activate(struct kfd_process *target); +bool kfd_set_dbg_ev_from_interrupt(struct kfd_node *dev, + unsigned int pasid, + uint32_t doorbell_id, + uint64_t trap_mask, + void *exception_data, + size_t exception_data_size); bool kfd_dbg_ev_raise(uint64_t event_mask, struct kfd_process *process, struct kfd_node *dev, unsigned int source_id, bool use_worker, |