From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Dmitry Kravkov" Subject: [PATCH net-next 10/13] bnx2x: add fan failure event handling Date: Thu, 10 Nov 2011 17:14:11 +0200 Message-ID: <1320938054-31288-11-git-send-email-dmitry@broadcom.com> References: <1320938054-31288-1-git-send-email-dmitry@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: "Ariel Elior" , "Dmitry Kravkov" , "Eilon Greenstein" To: davem@davemloft.net, netdev@vger.kernel.org Return-path: Received: from mms1.broadcom.com ([216.31.210.17]:4057 "EHLO mms1.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935079Ab1KJPOl (ORCPT ); Thu, 10 Nov 2011 10:14:41 -0500 In-Reply-To: <1320938054-31288-1-git-send-email-dmitry@broadcom.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Ariel Elior Shut down the device in case of fan failure to prevent HW damage. Signed-off-by: Dmitry Kravkov Signed-off-by: Eilon Greenstein --- drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 3 ++ drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 24 +++++++++++++++++++++- 2 files changed, 26 insertions(+), 1 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h index 23e91f4..78613ef 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h @@ -1141,6 +1141,7 @@ struct bnx2x_fw_stats_data { enum { BNX2X_SP_RTNL_SETUP_TC, BNX2X_SP_RTNL_TX_TIMEOUT, + BNX2X_SP_RTNL_FAN_FAILURE, }; @@ -2048,6 +2049,8 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms, #define BNX2X_VPD_LEN 128 #define VENDOR_ID_LEN 4 +int bnx2x_close(struct net_device *dev); + /* Congestion management fairness mode */ #define CMNG_FNS_NONE 0 #define CMNG_FNS_MINMAX 1 diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index 5b44b85..1f65391 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -3303,6 +3303,17 @@ static inline void bnx2x_fan_failure(struct bnx2x *bp) netdev_err(bp->dev, "Fan Failure on Network Controller has caused" " the driver to shutdown the card to prevent permanent" " damage. Please contact OEM Support for assistance\n"); + + /* + * Scheudle device reset (unload) + * This is due to some boards consuming sufficient power when driver is + * up to overheat if fan fails. + */ + smp_mb__before_clear_bit(); + set_bit(BNX2X_SP_RTNL_FAN_FAILURE, &bp->sp_rtnl_state); + smp_mb__after_clear_bit(); + schedule_delayed_work(&bp->sp_rtnl_task, 0); + } static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn) @@ -8507,6 +8518,17 @@ sp_rtnl_not_reset: if (test_and_clear_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state)) bnx2x_setup_tc(bp->dev, bp->dcbx_port_params.ets.num_of_cos); + /* + * in case of fan failure we need to reset id if the "stop on error" + * debug flag is set, since we trying to prevent permanent overheating + * damage + */ + if (test_and_clear_bit(BNX2X_SP_RTNL_FAN_FAILURE, &bp->sp_rtnl_state)) { + DP(BNX2X_MSG_SP, "fan failure detected. Unloading driver"); + netif_device_detach(bp->dev); + bnx2x_close(bp->dev); + } + sp_rtnl_exit: rtnl_unlock(); } @@ -9992,7 +10014,7 @@ static int bnx2x_open(struct net_device *dev) } /* called with rtnl_lock */ -static int bnx2x_close(struct net_device *dev) +int bnx2x_close(struct net_device *dev) { struct bnx2x *bp = netdev_priv(dev); -- 1.7.7.2