scsi: qla2xxx: Add fw_started flags to qpair

Add fw_started flag to qpair to reduce cache thrash.  This reduce access
to qla_hw_data structure by each qpair.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla2xxx/qla_def.h

@@ -3262,6 +3262,7 @@ struct qla_qpair {
 	/* move vha->flags.difdix_supported here */
 	uint32_t difdix_supported:1;
 	uint32_t delete_in_progress:1;
+	uint32_t fw_started:1;
 
 	uint16_t id;			/* qp number used with FW */
 	uint16_t vp_idx;		/* vport ID */
@@ -4183,6 +4184,26 @@ struct qla2_sgx {
 	srb_t			*sp;
 };
 
+#define QLA_FW_STARTED(_ha) {			\
+	int i;					\
+	_ha->flags.fw_started = 1;		\
+	_ha->base_qpair->fw_started = 1;	\
+	for (i = 0; i < _ha->max_qpairs; i++) {	\
+	if (_ha->queue_pair_map[i])	\
+	_ha->queue_pair_map[i]->fw_started = 1;	\
+	}					\
+}
+
+#define QLA_FW_STOPPED(_ha) {			\
+	int i;					\
+	_ha->flags.fw_started = 0;		\
+	_ha->base_qpair->fw_started = 0;	\
+	for (i = 0; i < _ha->max_qpairs; i++) {	\
+	if (_ha->queue_pair_map[i])	\
+	_ha->queue_pair_map[i]->fw_started = 0;	\
+	}					\
+}
+
 /*
  * Macros to help code, maintain, etc.
  */

drivers/scsi/qla2xxx/qla_init.c

@@ -3207,7 +3207,7 @@ qla2x00_init_rings(scsi_qla_host_t *vha)
 	} else {
 		ql_dbg(ql_dbg_init, vha, 0x00d3,
 		    "Init Firmware -- success.\n");
-		ha->flags.fw_started = 1;
+		QLA_FW_STARTED(ha);
 	}
 
 	return (rval);
@@ -6841,7 +6841,7 @@ qla2x00_try_to_stop_firmware(scsi_qla_host_t *vha)
 		ret = qla2x00_stop_firmware(vha);
 	}
 
-	ha->flags.fw_started = 0;
+	QLA_FW_STOPPED(ha);
 	ha->flags.fw_init_done = 0;
 }
 

drivers/scsi/qla2xxx/qla_isr.c

@@ -710,7 +710,7 @@ qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
 
 		ha->isp_ops->fw_dump(vha, 1);
 		ha->flags.fw_init_done = 0;
-		ha->flags.fw_started = 0;
+		QLA_FW_STOPPED(ha);
 
 		if (IS_FWI2_CAPABLE(ha)) {
 			if (mb[1] == 0 && mb[2] == 0) {

drivers/scsi/qla2xxx/qla_target.c

@@ -3086,7 +3086,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 	else
 		vha->tgt_counters.core_qla_que_buf++;
 
-	if (!ha->flags.fw_started || cmd->reset_count != ha->chip_reset) {
+	if (!qpair->fw_started || cmd->reset_count != vha->hw->chip_reset) {
 		/*
 		 * Either the port is not online or this request was from
 		 * previous life, just abort the processing.
@@ -3096,7 +3096,7 @@ int qlt_xmit_response(struct qla_tgt_cmd *cmd, int xmit_type,
 		ql_dbg(ql_dbg_async, vha, 0xe101,
 			"RESET-RSP online/active/old-count/new-count = %d/%d/%d/%d.\n",
 			vha->flags.online, qla2x00_reset_active(vha),
-			cmd->reset_count, ha->chip_reset);
+			cmd->reset_count, vha->hw->chip_reset);
 		spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
 		return 0;
 	}
@@ -3206,7 +3206,6 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 {
 	struct ctio7_to_24xx *pkt;
 	struct scsi_qla_host *vha = cmd->vha;
-	struct qla_hw_data *ha = vha->hw;
 	struct qla_tgt *tgt = cmd->tgt;
 	struct qla_tgt_prm prm;
 	unsigned long flags = 0;
@@ -3223,7 +3222,7 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 	if (qlt_pci_map_calc_cnt(&prm) != 0)
 		return -EAGAIN;
 
-	if (!ha->flags.fw_started || (cmd->reset_count != ha->chip_reset) ||
+	if (!qpair->fw_started || (cmd->reset_count != vha->hw->chip_reset) ||
 	    (cmd->sess && cmd->sess->deleted)) {
 		/*
 		 * Either the port is not online or this request was from
@@ -3234,7 +3233,7 @@ int qlt_rdy_to_xfer(struct qla_tgt_cmd *cmd)
 		ql_dbg(ql_dbg_async, vha, 0xe102,
 			"RESET-XFR online/active/old-count/new-count = %d/%d/%d/%d.\n",
 			vha->flags.online, qla2x00_reset_active(vha),
-			cmd->reset_count, ha->chip_reset);
+			cmd->reset_count, vha->hw->chip_reset);
 		return 0;
 	}