From: Igor Russkikh <irusskikh@marvell.com>
Date: Thu, 14 May 2020 12:57:25 +0300
Subject: net: qed: introduce critical fan failure handler
Patch-mainline: v5.8-rc1
Git-commit: 3e99c2111026244326deee5fcaf8ea744627214b
References: jsc#SLE-15143

Fan failure is sent by firmware, driver reacts on this error with
newly introduced notification path. It will collect dump and shut down
the device to prevent physical breakage

Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/qlogic/qed/qed_hsi.h |    2 +-
 drivers/net/ethernet/qlogic/qed/qed_mcp.c |   14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/qlogic/qed/qed_hsi.h
+++ b/drivers/net/ethernet/qlogic/qed/qed_hsi.h
@@ -12761,7 +12761,7 @@ enum MFW_DRV_MSG_TYPE {
 	MFW_DRV_MSG_GET_FCOE_STATS,
 	MFW_DRV_MSG_GET_ISCSI_STATS,
 	MFW_DRV_MSG_GET_RDMA_STATS,
-	MFW_DRV_MSG_BW_UPDATE10,
+	MFW_DRV_MSG_FAILURE_DETECTED,
 	MFW_DRV_MSG_TRANSCEIVER_STATE_CHANGE,
 	MFW_DRV_MSG_BW_UPDATE11,
 	MFW_DRV_MSG_RESERVED,
--- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c
@@ -1706,6 +1706,17 @@ static void qed_mcp_update_stag(struct q
 		    &resp, &param);
 }
 
+static void qed_mcp_handle_fan_failure(struct qed_hwfn *p_hwfn,
+				       struct qed_ptt *p_ptt)
+{
+	/* A single notification should be sent to upper driver in CMT mode */
+	if (p_hwfn != QED_LEADING_HWFN(p_hwfn->cdev))
+		return;
+
+	qed_hw_err_notify(p_hwfn, p_ptt, QED_HW_ERR_FAN_FAIL,
+			  "Fan failure was detected on the network interface card and it's going to be shut down.\n");
+}
+
 void qed_mcp_read_ufp_config(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 {
 	struct public_func shmem_info;
@@ -1852,6 +1863,9 @@ int qed_mcp_handle_events(struct qed_hwf
 		case MFW_DRV_MSG_S_TAG_UPDATE:
 			qed_mcp_update_stag(p_hwfn, p_ptt);
 			break;
+		case MFW_DRV_MSG_FAILURE_DETECTED:
+			qed_mcp_handle_fan_failure(p_hwfn, p_ptt);
+			break;
 		case MFW_DRV_MSG_GET_TLV_REQ:
 			qed_mfw_tlv_req(p_hwfn);
 			break;