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Commit 8304859a authored by Ariel Elior's avatar Ariel Elior Committed by David S. Miller
Browse files

bnx2x: add fan failure event handling 



Shut down the device in case of fan failure to prevent HW damage.

Signed-off-by: default avatarDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: default avatarEilon Greenstein <eilong@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 46fa1309

drivers/net/ethernet/broadcom/bnx2x/bnx2x.h

+3 −0
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c

+23 −1
Original line number Diff line number Diff line
@@ -3299,6 +3299,17 @@ 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)
@@ -8503,6 +8514,17 @@ 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();

}
@@ -9969,7 +9991,7 @@ 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);