Commit e09498b0 authored by Omer Shpigelman's avatar Omer Shpigelman Committed by Oded Gabbay
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habanalabs: add dedicated define for hard reset 



Gaudi requires longer waiting during reset due to closing of network ports.
Add this explanation to the relevant comment in the code and add a
dedicated define for this reset timeout period, instead of multiplying
another define.

Signed-off-by: default avatarOmer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
parent 9e5e49cd

drivers/misc/habanalabs/device.c

+3 −2
Original line number Diff line number Diff line
@@ -1326,11 +1326,12 @@ void hl_device_fini(struct hl_device *hdev) 
	 * This function is competing with the reset function, so try to

	 * take the reset atomic and if we are already in middle of reset,

	 * wait until reset function is finished. Reset function is designed

	 * to always finish (could take up to a few seconds in worst case).

	 * to always finish. However, in Gaudi, because of all the network

	 * ports, the hard reset could take between 10-30 seconds

	 */



	timeout = ktime_add_us(ktime_get(),

				HL_PENDING_RESET_PER_SEC * 1000 * 1000 * 4);

				HL_HARD_RESET_MAX_TIMEOUT * 1000 * 1000);

	rc = atomic_cmpxchg(&hdev->in_reset, 0, 1);

	while (rc) {

		usleep_range(50, 200);

drivers/misc/habanalabs/habanalabs.h

+2 −0
Original line number Diff line number Diff line
@@ -25,6 +25,8 @@ 


#define HL_PENDING_RESET_PER_SEC	30



#define HL_HARD_RESET_MAX_TIMEOUT	120



#define HL_DEVICE_TIMEOUT_USEC		1000000 /* 1 s */



#define HL_HEARTBEAT_PER_USEC		5000000 /* 5 s */

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