[PATCH 1/2] habanalabs/gaudi: reset device upon BMC request

Oded Gabbay
2021-03-09T18:29:23Z

From: Ofir Bitton <obitton@habana.ai>

In case the BMC of the devices' box wants to initiate a reset of
a specific device, it must go through driver.
Once driver will receive the request it will initiate a hard reset
flow.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
drivers/misc/habanalabs/gaudi/gaudi.c | 4 ++++
drivers/misc/habanalabs/include/gaudi/gaudi_async_events.h | 1 +
.../habanalabs/include/gaudi/gaudi_async_ids_map_extended.h | 2 +-
3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 8be75f7c97f8..099c51350be6 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -7575,6 +7575,10 @@ static void gaudi_handle_eqe(struct hl_device *hdev,
event_type, cause);
break;

+ case GAUDI_EVENT_BMC_RESET_CMD:
+ gaudi_print_irq_info(hdev, event_type, false);
+ goto reset_device;
+
case GAUDI_EVENT_PKT_QUEUE_OUT_SYNC:
gaudi_print_irq_info(hdev, event_type, false);
gaudi_print_out_of_sync_info(hdev, &eq_entry->pkt_sync_err);
diff --git a/drivers/misc/habanalabs/include/gaudi/gaudi_async_events.h b/drivers/misc/habanalabs/include/gaudi/gaudi_async_events.h
index 0a0fa57024f8..25f835ba2cd6 100644
--- a/drivers/misc/habanalabs/include/gaudi/gaudi_async_events.h
+++ b/drivers/misc/habanalabs/include/gaudi/gaudi_async_events.h
@@ -303,6 +303,7 @@ enum gaudi_async_event_id {
GAUDI_EVENT_NIC3_QP1 = 619,
GAUDI_EVENT_NIC4_QP0 = 620,
GAUDI_EVENT_NIC4_QP1 = 621,
+ GAUDI_EVENT_BMC_RESET_CMD = 646,
GAUDI_EVENT_PKT_QUEUE_OUT_SYNC = 647,
GAUDI_EVENT_FIX_POWER_ENV_S = 658,
GAUDI_EVENT_FIX_POWER_ENV_E = 659,
diff --git a/drivers/misc/habanalabs/include/gaudi/gaudi_async_ids_map_extended.h b/drivers/misc/habanalabs/include/gaudi/gaudi_async_ids_map_extended.h
index 9106395eb920..079be1fb8f70 100644
--- a/drivers/misc/habanalabs/include/gaudi/gaudi_async_ids_map_extended.h
+++ b/drivers/misc/habanalabs/include/gaudi/gaudi_async_ids_map_extended.h
@@ -670,7 +670,7 @@ static struct gaudi_async_events_ids_map gaudi_irq_map_table[] = {
{ .fc_id = 643, .cpu_id = 492, .valid = 0, .name = "" },
{ .fc_id = 644, .cpu_id = 493, .valid = 0, .name = "" },
{ .fc_id = 645, .cpu_id = 494, .valid = 0, .name = "" },
- { .fc_id = 646, .cpu_id = 495, .valid = 0, .name = "" },
+ { .fc_id = 646, .cpu_id = 495, .valid = 1, .name = "BMC_RST_CMD" },
{ .fc_id = 647, .cpu_id = 496, .valid = 0, .name = "" },
{ .fc_id = 648, .cpu_id = 497, .valid = 0, .name = "" },
{ .fc_id = 649, .cpu_id = 498, .valid = 0, .name = "" },
--
2.25.1