Commit 26ef1c00 authored by Oded Gabbay's avatar Oded Gabbay
Browse files

habanalabs/gaudi: handle axi errors from NIC engines 



Various AXI errors can occur in the NIC engines and are reported to
the driver by the f/w. Add code to print the errors and ack them to
the f/w.

Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent f23f2802

drivers/misc/habanalabs/gaudi/gaudi.c

+48 −0
Original line number Diff line number Diff line
@@ -7665,6 +7665,48 @@ static void gaudi_print_fw_alive_info(struct hl_device *hdev, 
		fw_alive->thread_id, fw_alive->uptime_seconds);

}



static void gaudi_print_nic_axi_irq_info(struct hl_device *hdev, u16 event_type,

						void *data)

{

	char desc[64] = "", *type;

	struct eq_nic_sei_event *eq_nic_sei = data;

	u16 nic_id = event_type - GAUDI_EVENT_NIC_SEI_0;



	switch (eq_nic_sei->axi_error_cause) {

	case RXB:

		type = "RXB";

		break;

	case RXE:

		type = "RXE";

		break;

	case TXS:

		type = "TXS";

		break;

	case TXE:

		type = "TXE";

		break;

	case QPC_RESP:

		type = "QPC_RESP";

		break;

	case NON_AXI_ERR:

		type = "NON_AXI_ERR";

		break;

	case TMR:

		type = "TMR";

		break;

	default:

		dev_err(hdev->dev, "unknown NIC AXI cause %d\n",

			eq_nic_sei->axi_error_cause);

		type = "N/A";

		break;

	}



	snprintf(desc, sizeof(desc), "NIC%d_%s%d", nic_id, type,

			eq_nic_sei->id);

	dev_err_ratelimited(hdev->dev, "Received H/W interrupt %d [\"%s\"]\n",

		event_type, desc);

}



static int gaudi_non_hard_reset_late_init(struct hl_device *hdev)

{

	/* GAUDI doesn't support any reset except hard-reset */
@@ -7898,6 +7940,7 @@ static void gaudi_handle_eqe(struct hl_device *hdev, 
				struct hl_eq_entry *eq_entry)

{

	struct gaudi_device *gaudi = hdev->asic_specific;

	u64 data = le64_to_cpu(eq_entry->data[0]);

	u32 ctl = le32_to_cpu(eq_entry->hdr.ctl);

	u32 fw_fatal_err_flag = 0;

	u16 event_type = ((ctl & EQ_CTL_EVENT_TYPE_MASK)
@@ -8095,6 +8138,11 @@ static void gaudi_handle_eqe(struct hl_device *hdev, 
		hl_fw_unmask_irq(hdev, event_type);

		break;



	case GAUDI_EVENT_NIC_SEI_0 ... GAUDI_EVENT_NIC_SEI_4:

		gaudi_print_nic_axi_irq_info(hdev, event_type, &data);

		hl_fw_unmask_irq(hdev, event_type);

		break;



	case GAUDI_EVENT_DMA_IF_SEI_0 ... GAUDI_EVENT_DMA_IF_SEI_3:

		gaudi_print_irq_info(hdev, event_type, false);

		gaudi_print_sm_sei_info(hdev, event_type,