drm/amdkfd: Add bad opcode exception handling
Signed-off-by: Alexey Skidanov <alexey.skidanov@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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@ -36,7 +36,8 @@ static bool cik_event_interrupt_isr(struct kfd_dev *dev,
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/* Do not process in ISR, just request it to be forwarded to WQ. */
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return (pasid != 0) &&
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(ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
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ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG);
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ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
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ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE);
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}
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static void cik_event_interrupt_wq(struct kfd_dev *dev,
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@ -55,6 +56,8 @@ static void cik_event_interrupt_wq(struct kfd_dev *dev,
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kfd_signal_event_interrupt(pasid, 0, 0);
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else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
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kfd_signal_event_interrupt(pasid, ihre->data & 0xFF, 8);
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else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
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kfd_signal_hw_exception_event(pasid);
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}
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const struct kfd_event_interrupt_class event_interrupt_class_cik = {
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@ -34,6 +34,7 @@ struct cik_ih_ring_entry {
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#define CIK_INTSRC_DEQUEUE_COMPLETE 0xC6
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#define CIK_INTSRC_CP_END_OF_PIPE 0xB5
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#define CIK_INTSRC_CP_BAD_OPCODE 0xB7
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#define CIK_INTSRC_SQ_INTERRUPT_MSG 0xEF
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#endif
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@ -936,3 +936,24 @@ void kfd_signal_iommu_event(struct kfd_dev *dev, unsigned int pasid,
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mutex_unlock(&p->event_mutex);
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mutex_unlock(&p->mutex);
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}
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void kfd_signal_hw_exception_event(unsigned int pasid)
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{
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/*
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* Because we are called from arbitrary context (workqueue) as opposed
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* to process context, kfd_process could attempt to exit while we are
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* running so the lookup function returns a locked process.
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*/
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struct kfd_process *p = kfd_lookup_process_by_pasid(pasid);
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if (!p)
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return; /* Presumably process exited. */
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mutex_lock(&p->event_mutex);
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/* Lookup events by type and signal them */
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lookup_events_by_type_and_signal(p, KFD_EVENT_TYPE_HW_EXCEPTION, NULL);
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mutex_unlock(&p->event_mutex);
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mutex_unlock(&p->mutex);
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}
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@ -74,6 +74,7 @@ struct kfd_event {
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/* Matching HSA_EVENTTYPE */
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#define KFD_EVENT_TYPE_SIGNAL 0
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#define KFD_EVENT_TYPE_HW_EXCEPTION 3
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#define KFD_EVENT_TYPE_DEBUG 5
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#define KFD_EVENT_TYPE_MEMORY 8
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@ -682,6 +682,7 @@ phys_addr_t kfd_get_process_doorbells(struct kfd_dev *dev,
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/* Events */
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extern const struct kfd_event_interrupt_class event_interrupt_class_cik;
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extern const struct kfd_device_global_init_class device_global_init_class_cik;
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enum kfd_event_wait_result {
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KFD_WAIT_COMPLETE,
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@ -701,6 +702,7 @@ void kfd_signal_event_interrupt(unsigned int pasid, uint32_t partial_id,
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void kfd_signal_iommu_event(struct kfd_dev *dev,
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unsigned int pasid, unsigned long address,
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bool is_write_requested, bool is_execute_requested);
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void kfd_signal_hw_exception_event(unsigned int pasid);
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int kfd_set_event(struct kfd_process *p, uint32_t event_id);
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int kfd_reset_event(struct kfd_process *p, uint32_t event_id);
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int kfd_event_create(struct file *devkfd, struct kfd_process *p,
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