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drm/amdkfd: APIs to stop/start KFD scheduling

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Provide amdgpu_amdkfd_stop_sched() for amdgpu to stop KFD scheduling
compute work on HIQ. amdgpu_amdkfd_start_sched() resumes the scheduling.
When amdgpu_amdkfd_stop_sched is called, KFD will unmap queues from
runlist. If users send ioctls to KFD to create queues, they'll be added
but those queues won't be mapped to runlist (so not scheduled) until
amdgpu_amdkfd_start_sched is called.

v2: fix build (Alex)

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Amber Lin
2024-07-29 14:22:30 -04:00
committed by Alex Deucher
parent b1f49ff9cb
commit 234eebe161
5 changed files with 137 additions and 1 deletions
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drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
+9
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@@ -106,6 +106,12 @@ union GRBM_GFX_INDEX_BITS {
* @uninitialize: Destroys all the device queue manager resources allocated in
* initialize routine.
*
* @halt: This routine unmaps queues from runlist and set halt status to true
* so no more queues will be mapped to runlist until unhalt.
*
* @unhalt: This routine unset halt status to flase and maps queues back to
* runlist.
*
* @create_kernel_queue: Creates kernel queue. Used for debug queue.
*
* @destroy_kernel_queue: Destroys kernel queue. Used for debug queue.
@@ -153,6 +159,8 @@ struct device_queue_manager_ops {
int (*start)(struct device_queue_manager *dqm);
int (*stop)(struct device_queue_manager *dqm);
void (*uninitialize)(struct device_queue_manager *dqm);
int (*halt)(struct device_queue_manager *dqm);
int (*unhalt)(struct device_queue_manager *dqm);
int (*create_kernel_queue)(struct device_queue_manager *dqm,
struct kernel_queue *kq,
struct qcm_process_device *qpd);
@@ -264,6 +272,7 @@ struct device_queue_manager {
struct work_struct hw_exception_work;
struct kfd_mem_obj hiq_sdma_mqd;
bool sched_running;
bool sched_halt;
/* used for GFX 9.4.3 only */
uint32_t current_logical_xcc_start;