habanalabs/gaudi: add razwi notify event

Each time razwi (read-only zero, write ignore) happens, besides
capturing its data, also notify the user about it.

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

4 files changed, 31 insertions, 18 deletions

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 35ed494fcfdf..d1a609589558 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -2409,6 +2409,14 @@ void hl_capture_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_
 			num_of_engines * sizeof(u16));
 	hdev->captured_err_info.razwi.flags = flags;
 }
+
+void hl_handle_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_of_engines,
+			u8 flags, u64 *event_mask)
+{
+	hl_capture_razwi(hdev, addr, engine_id, num_of_engines, flags);
+	*event_mask |= HL_NOTIFIER_EVENT_RAZWI;
+}
+
 static void hl_capture_user_mappings(struct hl_device *hdev, bool is_pmmu)
 {
 	struct page_fault_info *pgf_info = &hdev->captured_err_info.pgf_info;
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
index e391e7951fb7..d9335f3769b8 100644
--- a/drivers/misc/habanalabs/common/habanalabs.h
+++ b/drivers/misc/habanalabs/common/habanalabs.h
@@ -3812,6 +3812,8 @@ hl_mmap_mem_buf_alloc(struct hl_mem_mgr *mmg,
 __printf(2, 3) void hl_engine_data_sprintf(struct engines_data *e, const char *fmt, ...);
 void hl_capture_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_of_engines,
 			u8 flags);
+void hl_handle_razwi(struct hl_device *hdev, u64 addr, u16 *engine_id, u16 num_of_engines,
+			u8 flags, u64 *event_mask);
 void hl_capture_page_fault(struct hl_device *hdev, u64 addr, u16 eng_id, bool is_pmmu);
 
 #ifdef CONFIG_DEBUG_FS
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 3dfb9ecf7db3..035865cb097c 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -7301,7 +7301,7 @@ static void gaudi_handle_qman_err(struct hl_device *hdev, u16 event_type, u64 *e
 }
 
 static void gaudi_print_irq_info(struct hl_device *hdev, u16 event_type,
-					bool razwi)
+					bool razwi, u64 *event_mask)
 {
 	bool is_read = false, is_write = false;
 	u16 engine_id[2], num_of_razwi_eng = 0;
@@ -7337,7 +7337,8 @@ static void gaudi_print_irq_info(struct hl_device *hdev, u16 event_type,
 				num_of_razwi_eng = 1;
 		}
 
-		hl_capture_razwi(hdev, razwi_addr, engine_id, num_of_razwi_eng, razwi_flags);
+		hl_handle_razwi(hdev, razwi_addr, engine_id, num_of_razwi_eng, razwi_flags,
+				event_mask);
 	}
 }
 
@@ -7675,7 +7676,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_HBM_0_DERR ... GAUDI_EVENT_HBM_3_DERR:
 	case GAUDI_EVENT_MMU_DERR:
 	case GAUDI_EVENT_NIC0_CS_DBG_DERR ... GAUDI_EVENT_NIC4_CS_DBG_DERR:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		gaudi_handle_ecc_event(hdev, event_type, &eq_entry->ecc_data);
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
 		fw_fatal_err_flag = HL_DRV_RESET_FW_FATAL_ERR;
@@ -7685,7 +7686,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_AXI_ECC:
 	case GAUDI_EVENT_L2_RAM_ECC:
 	case GAUDI_EVENT_PLL0 ... GAUDI_EVENT_PLL17:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		fw_fatal_err_flag = HL_DRV_RESET_FW_FATAL_ERR;
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
 		goto reset_device;
@@ -7694,7 +7695,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_HBM1_SPI_0:
 	case GAUDI_EVENT_HBM2_SPI_0:
 	case GAUDI_EVENT_HBM3_SPI_0:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		gaudi_hbm_read_interrupts(hdev,
 				gaudi_hbm_event_to_dev(event_type),
 				&eq_entry->hbm_ecc_data);
@@ -7706,7 +7707,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_HBM1_SPI_1:
 	case GAUDI_EVENT_HBM2_SPI_1:
 	case GAUDI_EVENT_HBM3_SPI_1:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		gaudi_hbm_read_interrupts(hdev,
 				gaudi_hbm_event_to_dev(event_type),
 				&eq_entry->hbm_ecc_data);
@@ -7728,7 +7729,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 		 * if the event is a TPC Assertion or a "real" TPC DEC.
 		 */
 		event_mask |= HL_NOTIFIER_EVENT_TPC_ASSERT;
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		reset_required = gaudi_tpc_read_interrupts(hdev,
 					tpc_dec_event_to_tpc_id(event_type),
 					"AXI_SLV_DEC_Error");
@@ -7753,7 +7754,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_TPC5_KRN_ERR:
 	case GAUDI_EVENT_TPC6_KRN_ERR:
 	case GAUDI_EVENT_TPC7_KRN_ERR:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		reset_required = gaudi_tpc_read_interrupts(hdev,
 					tpc_krn_event_to_tpc_id(event_type),
 					"KRN_ERR");
@@ -7792,7 +7793,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_HBM_0_SERR ... GAUDI_EVENT_HBM_3_SERR:
 		fallthrough;
 	case GAUDI_EVENT_MMU_SERR:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		gaudi_handle_ecc_event(hdev, event_type, &eq_entry->ecc_data);
 		hl_fw_unmask_irq(hdev, event_type);
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
@@ -7802,14 +7803,14 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_CPU_AXI_SPLITTER:
 	case GAUDI_EVENT_PSOC_AXI_DEC:
 	case GAUDI_EVENT_PSOC_PRSTN_FALL:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		hl_fw_unmask_irq(hdev, event_type);
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
 		break;
 
 	case GAUDI_EVENT_MMU_PAGE_FAULT:
 	case GAUDI_EVENT_MMU_WR_PERM:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		hl_fw_unmask_irq(hdev, event_type);
 		event_mask |= HL_NOTIFIER_EVENT_USER_ENGINE_ERR;
 		break;
@@ -7838,14 +7839,14 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_NIC4_QM1:
 	case GAUDI_EVENT_DMA0_CORE ... GAUDI_EVENT_DMA7_CORE:
 	case GAUDI_EVENT_TPC0_QM ... GAUDI_EVENT_TPC7_QM:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		gaudi_handle_qman_err(hdev, event_type, &event_mask);
 		hl_fw_unmask_irq(hdev, event_type);
 		event_mask |= (HL_NOTIFIER_EVENT_USER_ENGINE_ERR | HL_NOTIFIER_EVENT_DEVICE_RESET);
 		break;
 
 	case GAUDI_EVENT_RAZWI_OR_ADC_SW:
-		gaudi_print_irq_info(hdev, event_type, true);
+		gaudi_print_irq_info(hdev, event_type, true, &event_mask);
 		event_mask |= HL_NOTIFIER_EVENT_USER_ENGINE_ERR;
 		goto reset_device;
 
@@ -7858,7 +7859,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 	case GAUDI_EVENT_TPC6_BMON_SPMU:
 	case GAUDI_EVENT_TPC7_BMON_SPMU:
 	case GAUDI_EVENT_DMA_BM_CH0 ... GAUDI_EVENT_DMA_BM_CH7:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		hl_fw_unmask_irq(hdev, event_type);
 		event_mask |= HL_NOTIFIER_EVENT_USER_ENGINE_ERR;
 		break;
@@ -7870,7 +7871,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 		break;
 
 	case GAUDI_EVENT_DMA_IF_SEI_0 ... GAUDI_EVENT_DMA_IF_SEI_3:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		gaudi_print_sm_sei_info(hdev, event_type,
 					&eq_entry->sm_sei_data);
 		rc = hl_state_dump(hdev);
@@ -7899,18 +7900,18 @@ static void gaudi_handle_eqe(struct hl_device *hdev, struct hl_eq_entry *eq_entr
 		break;
 
 	case GAUDI_EVENT_DEV_RESET_REQ:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
 		goto reset_device;
 
 	case GAUDI_EVENT_PKT_QUEUE_OUT_SYNC:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		gaudi_print_out_of_sync_info(hdev, &eq_entry->pkt_sync_err);
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
 		goto reset_device;
 
 	case GAUDI_EVENT_FW_ALIVE_S:
-		gaudi_print_irq_info(hdev, event_type, false);
+		gaudi_print_irq_info(hdev, event_type, false, &event_mask);
 		gaudi_print_fw_alive_info(hdev, &eq_entry->fw_alive);
 		event_mask |= HL_NOTIFIER_EVENT_GENERAL_HW_ERR;
 		goto reset_device;
diff --git a/include/uapi/misc/habanalabs.h b/include/uapi/misc/habanalabs.h
index 58343998bd63..7747e19e81fe 100644
--- a/include/uapi/misc/habanalabs.h
+++ b/include/uapi/misc/habanalabs.h
@@ -721,6 +721,7 @@ enum hl_server_type {
  * HL_NOTIFIER_EVENT_DEVICE_UNAVAILABLE	- Indicates device is unavailable
  * HL_NOTIFIER_EVENT_USER_ENGINE_ERR	- Indicates device engine in error state
  * HL_NOTIFIER_EVENT_GENERAL_HW_ERR     - Indicates device HW error
+ * HL_NOTIFIER_EVENT_RAZWI              - Indicates razwi happened
  */
 #define HL_NOTIFIER_EVENT_TPC_ASSERT		(1ULL << 0)
 #define HL_NOTIFIER_EVENT_UNDEFINED_OPCODE	(1ULL << 1)
@@ -729,6 +730,7 @@ enum hl_server_type {
 #define HL_NOTIFIER_EVENT_DEVICE_UNAVAILABLE	(1ULL << 4)
 #define HL_NOTIFIER_EVENT_USER_ENGINE_ERR	(1ULL << 5)
 #define HL_NOTIFIER_EVENT_GENERAL_HW_ERR	(1ULL << 6)
+#define HL_NOTIFIER_EVENT_RAZWI			(1ULL << 7)
 
 /* Opcode for management ioctl
  *