cxgb4: Decode link down reason code obtained from firmware (ddc7740d) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/net/ethernet/chelsio/cxgb4/cxgb4.h

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -396,6 +396,7 @@ struct link_config {
	unsigned char fc; /* actual link flow control */		unsigned char fc; /* actual link flow control */
	unsigned char autoneg; /* autonegotiating? */		unsigned char autoneg; /* autonegotiating? */
	unsigned char link_ok; /* link up? */		unsigned char link_ok; /* link up? */
			unsigned char link_down_rc; /* link down reason */
	};		};

	#define FW_LEN16(fw_struct) FW_CMD_LEN16_V(sizeof(fw_struct) / 16)		#define FW_LEN16(fw_struct) FW_CMD_LEN16_V(sizeof(fw_struct) / 16)

drivers/net/ethernet/chelsio/cxgb4/t4_hw.c

+34 −0

Original line number	Original line	Diff line number	Diff line
	@@ -7102,6 +7102,32 @@ int t4_ofld_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
	return t4_wr_mbox(adap, mbox, &c, sizeof(c), NULL);		return t4_wr_mbox(adap, mbox, &c, sizeof(c), NULL);
	}		}

			/**
			* t4_link_down_rc_str - return a string for a Link Down Reason Code
			* @adap: the adapter
			* @link_down_rc: Link Down Reason Code
			*
			* Returns a string representation of the Link Down Reason Code.
			*/
			static const char *t4_link_down_rc_str(unsigned char link_down_rc)
			{
			static const char * const reason[] = {
			"Link Down",
			"Remote Fault",
			"Auto-negotiation Failure",
			"Reserved",
			"Insufficient Airflow",
			"Unable To Determine Reason",
			"No RX Signal Detected",
			"Reserved",
			};

			if (link_down_rc >= ARRAY_SIZE(reason))
			return "Bad Reason Code";

			return reason[link_down_rc];
			}

	/**		/**
	* t4_handle_get_port_info - process a FW reply message		* t4_handle_get_port_info - process a FW reply message
	* @pi: the port info		* @pi: the port info
	@@ -7142,6 +7168,14 @@ void t4_handle_get_port_info(struct port_info pi, const __be64 rpl)
	}		}
	if (link_ok != lc->link_ok \|\| speed != lc->speed \|\|		if (link_ok != lc->link_ok \|\| speed != lc->speed \|\|
	fc != lc->fc) { /* something changed */		fc != lc->fc) { /* something changed */
			if (!link_ok && lc->link_ok) {
			unsigned char rc = FW_PORT_CMD_LINKDNRC_G(stat);

			lc->link_down_rc = rc;
			dev_warn(adap->pdev_dev,
			"Port %d link down, reason: %s\n",
			pi->port_id, t4_link_down_rc_str(rc));
			}
	lc->link_ok = link_ok;		lc->link_ok = link_ok;
	lc->speed = speed;		lc->speed = speed;
	lc->fc = fc;		lc->fc = fc;

drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2510,6 +2510,11 @@ struct fw_port_cmd {
	#define FW_PORT_CMD_PTYPE_G(x) \		#define FW_PORT_CMD_PTYPE_G(x) \
	(((x) >> FW_PORT_CMD_PTYPE_S) & FW_PORT_CMD_PTYPE_M)		(((x) >> FW_PORT_CMD_PTYPE_S) & FW_PORT_CMD_PTYPE_M)

			#define FW_PORT_CMD_LINKDNRC_S 5
			#define FW_PORT_CMD_LINKDNRC_M 0x7
			#define FW_PORT_CMD_LINKDNRC_G(x) \
			(((x) >> FW_PORT_CMD_LINKDNRC_S) & FW_PORT_CMD_LINKDNRC_M)

	#define FW_PORT_CMD_MODTYPE_S 0		#define FW_PORT_CMD_MODTYPE_S 0
	#define FW_PORT_CMD_MODTYPE_M 0x1f		#define FW_PORT_CMD_MODTYPE_M 0x1f
	#define FW_PORT_CMD_MODTYPE_V(x) ((x) << FW_PORT_CMD_MODTYPE_S)		#define FW_PORT_CMD_MODTYPE_V(x) ((x) << FW_PORT_CMD_MODTYPE_S)