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habanalabs/gaudi: notify user process on device unavailable

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When a device error occurs, user process would like to get some
indication on the error by reading some device HW info. If the
device is unavailable, user process can't perform any HW device
reading.

Signed-off-by: Tal Cohen <talcohen@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tal Cohen 2022-06-09 18:08:31 +03:00 committed by Oded Gabbay
parent 4cd213807b
commit 67a54d5de2
2 changed files with 11 additions and 6 deletions
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5
drivers/misc/habanalabs/gaudi/gaudi.c
View file

@ -8063,7 +8063,10 @@ static void gaudi_handle_eqe(struct hl_device *hdev,
if (hdev->asic_prop.fw_security_enabled && !reset_direct) {
flags = HL_DRV_RESET_HARD | HL_DRV_RESET_BYPASS_REQ_TO_FW | fw_fatal_err_flag;
event_mask |= HL_NOTIFIER_EVENT_DEVICE_RESET;
/* notify on device unavailable while the reset triggered by fw */
event_mask |= (HL_NOTIFIER_EVENT_DEVICE_RESET |
HL_NOTIFIER_EVENT_DEVICE_UNAVAILABLE);
} else if (hdev->hard_reset_on_fw_events) {
flags = HL_DRV_RESET_HARD | HL_DRV_RESET_DELAY | fw_fatal_err_flag;
event_mask |= HL_NOTIFIER_EVENT_DEVICE_RESET;

12
include/uapi/misc/habanalabs.h
View file

@ -1432,15 +1432,17 @@ struct hl_debug_args {
/*
* Notifier event values - for the notification mechanism and the HL_INFO_GET_EVENTS command
*
* HL_NOTIFIER_EVENT_TPC_ASSERT - Indicates TPC assert event
* HL_NOTIFIER_EVENT_UNDEFINED_OPCODE - Indicates undefined operation code
* HL_NOTIFIER_EVENT_DEVICE_RESET - Indicates device requires a reset
* HL_NOTIFIER_EVENT_CS_TIMEOUT - Indicates CS timeout error
* HL_NOTIFIER_EVENT_TPC_ASSERT - Indicates TPC assert event
* HL_NOTIFIER_EVENT_UNDEFINED_OPCODE - Indicates undefined operation code
* HL_NOTIFIER_EVENT_DEVICE_RESET - Indicates device requires a reset
* HL_NOTIFIER_EVENT_CS_TIMEOUT - Indicates CS timeout error
* HL_NOTIFIER_EVENT_DEVICE_UNAVAILABLE - Indicates device is unavailable
*/
#define HL_NOTIFIER_EVENT_TPC_ASSERT (1ULL << 0)
#define HL_NOTIFIER_EVENT_UNDEFINED_OPCODE (1ULL << 1)
#define HL_NOTIFIER_EVENT_DEVICE_RESET (1ULL << 2)
#define HL_NOTIFIER_EVENT_CS_TIMEOUT (1ULL << 3)
#define HL_NOTIFIER_EVENT_CS_TIMEOUT (1ULL << 3)
#define HL_NOTIFIER_EVENT_DEVICE_UNAVAILABLE (1ULL << 4)
/*
* Various information operations such as: