accel/habanalabs: notify user about undefined opcode event

In order for user to be aware of undefined opcode events, we must
store all relevant information and notify user about the failure.
The user will fetch the stored info via info ioctl.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

1 files changed, 137 insertions, 5 deletions

diff --git a/drivers/accel/habanalabs/gaudi2/gaudi2.c b/drivers/accel/habanalabs/gaudi2/gaudi2.c
index 20c4583f12b0..ed3b0b6225d2 100644
--- a/drivers/accel/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/accel/habanalabs/gaudi2/gaudi2.c
@@ -993,6 +993,111 @@ gaudi2_pcie_addr_dec_error_cause[GAUDI2_NUM_OF_PCIE_ADDR_DEC_ERR_CAUSE] = {
 	"TLP is blocked by RR"
 };
 
+static const int gaudi2_queue_id_to_engine_id[] = {
+	[GAUDI2_QUEUE_ID_PDMA_0_0...GAUDI2_QUEUE_ID_PDMA_0_3] = GAUDI2_ENGINE_ID_PDMA_0,
+	[GAUDI2_QUEUE_ID_PDMA_1_0...GAUDI2_QUEUE_ID_PDMA_1_3] = GAUDI2_ENGINE_ID_PDMA_1,
+	[GAUDI2_QUEUE_ID_DCORE0_EDMA_0_0...GAUDI2_QUEUE_ID_DCORE0_EDMA_0_3] =
+							GAUDI2_DCORE0_ENGINE_ID_EDMA_0,
+	[GAUDI2_QUEUE_ID_DCORE0_EDMA_1_0...GAUDI2_QUEUE_ID_DCORE0_EDMA_1_3] =
+							GAUDI2_DCORE0_ENGINE_ID_EDMA_1,
+	[GAUDI2_QUEUE_ID_DCORE1_EDMA_0_0...GAUDI2_QUEUE_ID_DCORE1_EDMA_0_3] =
+							GAUDI2_DCORE1_ENGINE_ID_EDMA_0,
+	[GAUDI2_QUEUE_ID_DCORE1_EDMA_1_0...GAUDI2_QUEUE_ID_DCORE1_EDMA_1_3] =
+							GAUDI2_DCORE1_ENGINE_ID_EDMA_1,
+	[GAUDI2_QUEUE_ID_DCORE2_EDMA_0_0...GAUDI2_QUEUE_ID_DCORE2_EDMA_0_3] =
+							GAUDI2_DCORE2_ENGINE_ID_EDMA_0,
+	[GAUDI2_QUEUE_ID_DCORE2_EDMA_1_0...GAUDI2_QUEUE_ID_DCORE2_EDMA_1_3] =
+							GAUDI2_DCORE2_ENGINE_ID_EDMA_1,
+	[GAUDI2_QUEUE_ID_DCORE3_EDMA_0_0...GAUDI2_QUEUE_ID_DCORE3_EDMA_0_3] =
+							GAUDI2_DCORE3_ENGINE_ID_EDMA_0,
+	[GAUDI2_QUEUE_ID_DCORE3_EDMA_1_0...GAUDI2_QUEUE_ID_DCORE3_EDMA_1_3] =
+							GAUDI2_DCORE3_ENGINE_ID_EDMA_1,
+	[GAUDI2_QUEUE_ID_DCORE0_MME_0_0...GAUDI2_QUEUE_ID_DCORE0_MME_0_3] =
+							GAUDI2_DCORE0_ENGINE_ID_MME,
+	[GAUDI2_QUEUE_ID_DCORE1_MME_0_0...GAUDI2_QUEUE_ID_DCORE1_MME_0_3] =
+							GAUDI2_DCORE1_ENGINE_ID_MME,
+	[GAUDI2_QUEUE_ID_DCORE2_MME_0_0...GAUDI2_QUEUE_ID_DCORE2_MME_0_3] =
+							GAUDI2_DCORE2_ENGINE_ID_MME,
+	[GAUDI2_QUEUE_ID_DCORE3_MME_0_0...GAUDI2_QUEUE_ID_DCORE3_MME_0_3] =
+							GAUDI2_DCORE3_ENGINE_ID_MME,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_0_0...GAUDI2_QUEUE_ID_DCORE0_TPC_0_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_0,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_1_0...GAUDI2_QUEUE_ID_DCORE0_TPC_1_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_1,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_2_0...GAUDI2_QUEUE_ID_DCORE0_TPC_2_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_2,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_3_0...GAUDI2_QUEUE_ID_DCORE0_TPC_3_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_3,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_4_0...GAUDI2_QUEUE_ID_DCORE0_TPC_4_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_4,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_5_0...GAUDI2_QUEUE_ID_DCORE0_TPC_5_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_5,
+	[GAUDI2_QUEUE_ID_DCORE0_TPC_6_0...GAUDI2_QUEUE_ID_DCORE0_TPC_6_3] =
+							GAUDI2_DCORE0_ENGINE_ID_TPC_6,
+	[GAUDI2_QUEUE_ID_DCORE1_TPC_0_0...GAUDI2_QUEUE_ID_DCORE1_TPC_0_3] =
+							GAUDI2_DCORE1_ENGINE_ID_TPC_0,
+	[GAUDI2_QUEUE_ID_DCORE1_TPC_1_0...GAUDI2_QUEUE_ID_DCORE1_TPC_1_3] =
+							GAUDI2_DCORE1_ENGINE_ID_TPC_1,
+	[GAUDI2_QUEUE_ID_DCORE1_TPC_2_0...GAUDI2_QUEUE_ID_DCORE1_TPC_2_3] =
+							GAUDI2_DCORE1_ENGINE_ID_TPC_2,
+	[GAUDI2_QUEUE_ID_DCORE1_TPC_3_0...GAUDI2_QUEUE_ID_DCORE1_TPC_3_3] =
+							GAUDI2_DCORE1_ENGINE_ID_TPC_3,
+	[GAUDI2_QUEUE_ID_DCORE1_TPC_4_0...GAUDI2_QUEUE_ID_DCORE1_TPC_4_3] =
+							GAUDI2_DCORE1_ENGINE_ID_TPC_4,
+	[GAUDI2_QUEUE_ID_DCORE1_TPC_5_0...GAUDI2_QUEUE_ID_DCORE1_TPC_5_3] =
+							GAUDI2_DCORE1_ENGINE_ID_TPC_5,
+	[GAUDI2_QUEUE_ID_DCORE2_TPC_0_0...GAUDI2_QUEUE_ID_DCORE2_TPC_0_3] =
+							GAUDI2_DCORE2_ENGINE_ID_TPC_0,
+	[GAUDI2_QUEUE_ID_DCORE2_TPC_1_0...GAUDI2_QUEUE_ID_DCORE2_TPC_1_3] =
+							GAUDI2_DCORE2_ENGINE_ID_TPC_1,
+	[GAUDI2_QUEUE_ID_DCORE2_TPC_2_0...GAUDI2_QUEUE_ID_DCORE2_TPC_2_3] =
+							GAUDI2_DCORE2_ENGINE_ID_TPC_2,
+	[GAUDI2_QUEUE_ID_DCORE2_TPC_3_0...GAUDI2_QUEUE_ID_DCORE2_TPC_3_3] =
+							GAUDI2_DCORE2_ENGINE_ID_TPC_3,
+	[GAUDI2_QUEUE_ID_DCORE2_TPC_4_0...GAUDI2_QUEUE_ID_DCORE2_TPC_4_3] =
+							GAUDI2_DCORE2_ENGINE_ID_TPC_4,
+	[GAUDI2_QUEUE_ID_DCORE2_TPC_5_0...GAUDI2_QUEUE_ID_DCORE2_TPC_5_3] =
+							GAUDI2_DCORE2_ENGINE_ID_TPC_5,
+	[GAUDI2_QUEUE_ID_DCORE3_TPC_0_0...GAUDI2_QUEUE_ID_DCORE3_TPC_0_3] =
+							GAUDI2_DCORE3_ENGINE_ID_TPC_0,
+	[GAUDI2_QUEUE_ID_DCORE3_TPC_1_0...GAUDI2_QUEUE_ID_DCORE3_TPC_1_3] =
+							GAUDI2_DCORE3_ENGINE_ID_TPC_1,
+	[GAUDI2_QUEUE_ID_DCORE3_TPC_2_0...GAUDI2_QUEUE_ID_DCORE3_TPC_2_3] =
+							GAUDI2_DCORE3_ENGINE_ID_TPC_2,
+	[GAUDI2_QUEUE_ID_DCORE3_TPC_3_0...GAUDI2_QUEUE_ID_DCORE3_TPC_3_3] =
+							GAUDI2_DCORE3_ENGINE_ID_TPC_3,
+	[GAUDI2_QUEUE_ID_DCORE3_TPC_4_0...GAUDI2_QUEUE_ID_DCORE3_TPC_4_3] =
+							GAUDI2_DCORE3_ENGINE_ID_TPC_4,
+	[GAUDI2_QUEUE_ID_DCORE3_TPC_5_0...GAUDI2_QUEUE_ID_DCORE3_TPC_5_3] =
+							GAUDI2_DCORE3_ENGINE_ID_TPC_5,
+	[GAUDI2_QUEUE_ID_NIC_0_0...GAUDI2_QUEUE_ID_NIC_0_3] = GAUDI2_ENGINE_ID_NIC0_0,
+	[GAUDI2_QUEUE_ID_NIC_1_0...GAUDI2_QUEUE_ID_NIC_1_3] = GAUDI2_ENGINE_ID_NIC0_1,
+	[GAUDI2_QUEUE_ID_NIC_2_0...GAUDI2_QUEUE_ID_NIC_2_3] = GAUDI2_ENGINE_ID_NIC1_0,
+	[GAUDI2_QUEUE_ID_NIC_3_0...GAUDI2_QUEUE_ID_NIC_3_3] = GAUDI2_ENGINE_ID_NIC1_1,
+	[GAUDI2_QUEUE_ID_NIC_4_0...GAUDI2_QUEUE_ID_NIC_4_3] = GAUDI2_ENGINE_ID_NIC2_0,
+	[GAUDI2_QUEUE_ID_NIC_5_0...GAUDI2_QUEUE_ID_NIC_5_3] = GAUDI2_ENGINE_ID_NIC2_1,
+	[GAUDI2_QUEUE_ID_NIC_6_0...GAUDI2_QUEUE_ID_NIC_6_3] = GAUDI2_ENGINE_ID_NIC3_0,
+	[GAUDI2_QUEUE_ID_NIC_7_0...GAUDI2_QUEUE_ID_NIC_7_3] = GAUDI2_ENGINE_ID_NIC3_1,
+	[GAUDI2_QUEUE_ID_NIC_8_0...GAUDI2_QUEUE_ID_NIC_8_3] = GAUDI2_ENGINE_ID_NIC4_0,
+	[GAUDI2_QUEUE_ID_NIC_9_0...GAUDI2_QUEUE_ID_NIC_9_3] = GAUDI2_ENGINE_ID_NIC4_1,
+	[GAUDI2_QUEUE_ID_NIC_10_0...GAUDI2_QUEUE_ID_NIC_10_3] = GAUDI2_ENGINE_ID_NIC5_0,
+	[GAUDI2_QUEUE_ID_NIC_11_0...GAUDI2_QUEUE_ID_NIC_11_3] = GAUDI2_ENGINE_ID_NIC5_1,
+	[GAUDI2_QUEUE_ID_NIC_12_0...GAUDI2_QUEUE_ID_NIC_12_3] = GAUDI2_ENGINE_ID_NIC6_0,
+	[GAUDI2_QUEUE_ID_NIC_13_0...GAUDI2_QUEUE_ID_NIC_13_3] = GAUDI2_ENGINE_ID_NIC6_1,
+	[GAUDI2_QUEUE_ID_NIC_14_0...GAUDI2_QUEUE_ID_NIC_14_3] = GAUDI2_ENGINE_ID_NIC7_0,
+	[GAUDI2_QUEUE_ID_NIC_15_0...GAUDI2_QUEUE_ID_NIC_15_3] = GAUDI2_ENGINE_ID_NIC7_1,
+	[GAUDI2_QUEUE_ID_NIC_16_0...GAUDI2_QUEUE_ID_NIC_16_3] = GAUDI2_ENGINE_ID_NIC8_0,
+	[GAUDI2_QUEUE_ID_NIC_17_0...GAUDI2_QUEUE_ID_NIC_17_3] = GAUDI2_ENGINE_ID_NIC8_1,
+	[GAUDI2_QUEUE_ID_NIC_18_0...GAUDI2_QUEUE_ID_NIC_18_3] = GAUDI2_ENGINE_ID_NIC9_0,
+	[GAUDI2_QUEUE_ID_NIC_19_0...GAUDI2_QUEUE_ID_NIC_19_3] = GAUDI2_ENGINE_ID_NIC9_1,
+	[GAUDI2_QUEUE_ID_NIC_20_0...GAUDI2_QUEUE_ID_NIC_20_3] = GAUDI2_ENGINE_ID_NIC10_0,
+	[GAUDI2_QUEUE_ID_NIC_21_0...GAUDI2_QUEUE_ID_NIC_21_3] = GAUDI2_ENGINE_ID_NIC10_1,
+	[GAUDI2_QUEUE_ID_NIC_22_0...GAUDI2_QUEUE_ID_NIC_22_3] = GAUDI2_ENGINE_ID_NIC11_0,
+	[GAUDI2_QUEUE_ID_NIC_23_0...GAUDI2_QUEUE_ID_NIC_23_3] = GAUDI2_ENGINE_ID_NIC11_1,
+	[GAUDI2_QUEUE_ID_ROT_0_0...GAUDI2_QUEUE_ID_ROT_0_3] = GAUDI2_ENGINE_ID_ROT_0,
+	[GAUDI2_QUEUE_ID_ROT_1_0...GAUDI2_QUEUE_ID_ROT_1_3] = GAUDI2_ENGINE_ID_ROT_1,
+};
+
 const u32 gaudi2_qm_blocks_bases[GAUDI2_QUEUE_ID_SIZE] = {
 	[GAUDI2_QUEUE_ID_PDMA_0_0] = mmPDMA0_QM_BASE,
 	[GAUDI2_QUEUE_ID_PDMA_0_1] = mmPDMA0_QM_BASE,
@@ -7753,7 +7858,7 @@ static bool gaudi2_handle_ecc_event(struct hl_device *hdev, u16 event_type,
 	return !!ecc_data->is_critical;
 }
 
-static void print_lower_qman_data_on_err(struct hl_device *hdev, u64 qman_base)
+static void handle_lower_qman_data_on_err(struct hl_device *hdev, u64 qman_base, u64 event_mask)
 {
 	u32 lo, hi, cq_ptr_size, arc_cq_ptr_size;
 	u64 cq_ptr, arc_cq_ptr, cp_current_inst;
@@ -7775,10 +7880,22 @@ static void print_lower_qman_data_on_err(struct hl_device *hdev, u64 qman_base)
 	dev_info(hdev->dev,
 		"LowerQM. CQ: {ptr %#llx, size %u}, ARC_CQ: {ptr %#llx, size %u}, CP: {instruction %#llx}\n",
 		cq_ptr, cq_ptr_size, arc_cq_ptr, arc_cq_ptr_size, cp_current_inst);
+
+	if (event_mask & HL_NOTIFIER_EVENT_UNDEFINED_OPCODE) {
+		if (arc_cq_ptr) {
+			hdev->captured_err_info.undef_opcode.cq_addr = arc_cq_ptr;
+			hdev->captured_err_info.undef_opcode.cq_size = arc_cq_ptr_size;
+		} else {
+			hdev->captured_err_info.undef_opcode.cq_addr = cq_ptr;
+			hdev->captured_err_info.undef_opcode.cq_size = cq_ptr_size;
+		}
+
+		hdev->captured_err_info.undef_opcode.stream_id = QMAN_STREAMS;
+	}
 }
 
 static int gaudi2_handle_qman_err_generic(struct hl_device *hdev, u16 event_type,
-							u64 qman_base, u32 qid_base)
+						u64 qman_base, u32 qid_base, u64 *event_mask)
 {
 	u32 i, j, glbl_sts_val, arb_err_val, num_error_causes, error_count = 0;
 	u64 glbl_sts_addr, arb_err_addr;
@@ -7812,8 +7929,22 @@ static int gaudi2_handle_qman_err_generic(struct hl_device *hdev, u16 event_type
 				error_count++;
 			}
 
-		if (i == QMAN_STREAMS)
-			print_lower_qman_data_on_err(hdev, qman_base);
+		if (i == QMAN_STREAMS && error_count) {
+			/* check for undefined opcode */
+			if (glbl_sts_val & PDMA0_QM_GLBL_ERR_STS_CP_UNDEF_CMD_ERR_MASK &&
+					hdev->captured_err_info.undef_opcode.write_enable) {
+				memset(&hdev->captured_err_info.undef_opcode, 0,
+						sizeof(hdev->captured_err_info.undef_opcode));
+
+				hdev->captured_err_info.undef_opcode.write_enable = false;
+				hdev->captured_err_info.undef_opcode.timestamp = ktime_get();
+				hdev->captured_err_info.undef_opcode.engine_id =
+							gaudi2_queue_id_to_engine_id[qid_base];
+				*event_mask |= HL_NOTIFIER_EVENT_UNDEFINED_OPCODE;
+			}
+
+			handle_lower_qman_data_on_err(hdev, qman_base, *event_mask);
+		}
 	}
 
 	arb_err_val = RREG32(arb_err_addr);
@@ -8475,7 +8606,8 @@ static int gaudi2_handle_qman_err(struct hl_device *hdev, u16 event_type, u64 *e
 		return 0;
 	}
 
-	error_count = gaudi2_handle_qman_err_generic(hdev, event_type, qman_base, qid_base);
+	error_count = gaudi2_handle_qman_err_generic(hdev, event_type, qman_base,
+								qid_base, event_mask);
 
 	/* Handle EDMA QM SEI here because there is no AXI error response event for EDMA */
 	if (event_type >= GAUDI2_EVENT_HDMA2_QM && event_type <= GAUDI2_EVENT_HDMA5_QM) {