Commit 5731b6e6 authored by Tal Cohen's avatar Tal Cohen Committed by Oded Gabbay
Browse files

habanalabs/gaudi2: add device unavailable notification 



Device unavailable notifies the user that there isn't an option to
retrieve debug information from the device.
When a critical device error occurs and the f/w performs the device
reset, a device unavailable notification shall be sent to the user
process.

Signed-off-by: default avatarTal Cohen <talcohen@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent 16448d64

drivers/misc/habanalabs/gaudi2/gaudi2.c

+10 −2
Original line number Diff line number Diff line
@@ -8576,7 +8576,7 @@ static void gaudi2_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_ent 
{

	u32 ctl, reset_flags = HL_DRV_RESET_HARD | HL_DRV_RESET_DELAY;

	struct gaudi2_device *gaudi2 = hdev->asic_specific;

	bool reset_required = false, skip_reset = false;

	bool reset_required = false, skip_reset = false, is_critical = false;

	int index, sbte_index;

	u64 event_mask = 0;

	u16 event_type;
@@ -8602,6 +8602,7 @@ static void gaudi2_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_ent 
		reset_flags |= HL_DRV_RESET_FW_FATAL_ERR;

		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;

		reset_required = gaudi2_handle_ecc_event(hdev, event_type, &eq_entry->ecc_data);

		is_critical = eq_entry->ecc_data.is_critical;

		break;



	case GAUDI2_EVENT_TPC0_QM ... GAUDI2_EVENT_PDMA1_QM:
@@ -8976,9 +8977,16 @@ static void gaudi2_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_ent 
	return;



reset_device:

	if (hdev->hard_reset_on_fw_events) {

	if (hdev->asic_prop.fw_security_enabled && is_critical) {

		reset_flags = HL_DRV_RESET_HARD | HL_DRV_RESET_BYPASS_REQ_TO_FW;



		/* notify on device unavailable while the reset triggered by fw */

		event_mask |= (HL_NOTIFIER_EVENT_DEVICE_RESET |

					HL_NOTIFIER_EVENT_DEVICE_UNAVAILABLE);

		hl_device_reset(hdev, reset_flags);

	} else if (hdev->hard_reset_on_fw_events) {

		event_mask |= HL_NOTIFIER_EVENT_DEVICE_RESET;

		hl_device_reset(hdev, reset_flags);

	} else {

		if (!gaudi2_irq_map_table[event_type].msg)

			hl_fw_unmask_irq(hdev, event_type);