accel/habanalabs: fix handling of arc farm sei event

There is only single eq entry for arc farm sei event which aggregates
events from the four arc farms.
Fix the code to handle this event according to this behavior.

Signed-off-by: Dani Liberman <dliberman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

drivers/accel/habanalabs/gaudi2/gaudi2.c

@@ -8490,23 +8490,28 @@ static int gaudi2_handle_qman_err(struct hl_device *hdev, u16 event_type, u64 *e
 
 static int gaudi2_handle_arc_farm_sei_err(struct hl_device *hdev, u16 event_type)
 {
-	u32 i, sts_val, sts_clr_val = 0, error_count = 0;
+	u32 i, sts_val, sts_clr_val, error_count = 0, arc_farm;
 
-	sts_val = RREG32(mmARC_FARM_ARC0_AUX_ARC_SEI_INTR_STS);
+	for (arc_farm = 0 ; arc_farm < NUM_OF_ARC_FARMS_ARC ; arc_farm++) {
+		sts_clr_val = 0;
+		sts_val = RREG32(mmARC_FARM_ARC0_AUX_ARC_SEI_INTR_STS +
+				(arc_farm * ARC_FARM_OFFSET));
 
-	for (i = 0 ; i < GAUDI2_NUM_OF_ARC_SEI_ERR_CAUSE ; i++) {
-		if (sts_val & BIT(i)) {
-			gaudi2_print_event(hdev, event_type, true,
-				"err cause: %s", gaudi2_arc_sei_error_cause[i]);
-			sts_clr_val |= BIT(i);
-			error_count++;
+		for (i = 0 ; i < GAUDI2_NUM_OF_ARC_SEI_ERR_CAUSE ; i++) {
+			if (sts_val & BIT(i)) {
+				gaudi2_print_event(hdev, event_type, true,
+						"ARC FARM ARC %u err cause: %s",
+						arc_farm, gaudi2_arc_sei_error_cause[i]);
+				sts_clr_val |= BIT(i);
+				error_count++;
+			}
 		}
+		WREG32(mmARC_FARM_ARC0_AUX_ARC_SEI_INTR_CLR + (arc_farm * ARC_FARM_OFFSET),
+				sts_clr_val);
 	}
 
 	hl_check_for_glbl_errors(hdev);
 
-	WREG32(mmARC_FARM_ARC0_AUX_ARC_SEI_INTR_CLR, sts_clr_val);
-
 	return error_count;
 }
 

drivers/accel/habanalabs/include/gaudi2/asic_reg/gaudi2_regs.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0
  *
- * Copyright 2020-2022 HabanaLabs, Ltd.
+ * Copyright 2020-2023 HabanaLabs, Ltd.
  * All Rights Reserved.
  *
  */
@@ -543,6 +543,8 @@
 #define HBM_MC_SPI_IEEE1500_COMP_MASK		BIT(3)
 #define HBM_MC_SPI_IEEE1500_PAUSED_MASK		BIT(4)
 
+#define ARC_FARM_OFFSET (mmARC_FARM_ARC1_AUX_BASE - mmARC_FARM_ARC0_AUX_BASE)
+
 #include "nic0_qpc0_regs.h"
 #include "nic0_qm0_regs.h"
 #include "nic0_qm_arc_aux0_regs.h"