Commit 1b363adc authored by Tomer Tayar's avatar Tomer Tayar Committed by Oded Gabbay
Browse files

habanalabs: use graceful hard reset for CS timeouts 



Use graceful hard reset when detecting a CS timeout that requires a
device reset.

Signed-off-by: default avatarTomer Tayar <ttayar@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent d1ce7e5e

drivers/misc/habanalabs/common/command_submission.c

+8 −8
Original line number Diff line number Diff line
@@ -798,7 +798,7 @@ static void cs_do_release(struct kref *ref) 
static void cs_timedout(struct work_struct *work)

{

	struct hl_device *hdev;

	u64 event_mask;

	u64 event_mask = 0x0;

	int rc;

	struct hl_cs *cs = container_of(work, struct hl_cs,

						 work_tdr.work);
@@ -830,11 +830,7 @@ static void cs_timedout(struct work_struct *work) 
	if (rc) {

		hdev->captured_err_info.cs_timeout.timestamp = ktime_get();

		hdev->captured_err_info.cs_timeout.seq = cs->sequence;



		event_mask = device_reset ? (HL_NOTIFIER_EVENT_CS_TIMEOUT |

				HL_NOTIFIER_EVENT_DEVICE_RESET) : HL_NOTIFIER_EVENT_CS_TIMEOUT;



		hl_notifier_event_send_all(hdev, event_mask);

		event_mask |= HL_NOTIFIER_EVENT_CS_TIMEOUT;

	}



	switch (cs->type) {
@@ -869,8 +865,12 @@ static void cs_timedout(struct work_struct *work) 


	cs_put(cs);



	if (device_reset)

		hl_device_reset(hdev, HL_DRV_RESET_TDR);

	if (device_reset) {

		event_mask |= HL_NOTIFIER_EVENT_DEVICE_RESET;

		hl_device_cond_reset(hdev, HL_DRV_RESET_TDR, event_mask);

	} else if (event_mask) {

		hl_notifier_event_send_all(hdev, event_mask);

	}

}



static int allocate_cs(struct hl_device *hdev, struct hl_ctx *ctx,