+
+/**
+ * _scsih_scan_start - scsi lld callback for .scan_start
+ * @shost: SCSI host pointer
+ *
+ * The shost has the ability to discover targets on its own instead
+ * of scanning the entire bus. In our implemention, we will kick off
+ * firmware discovery.
+ */
+static void
+_scsih_scan_start(struct Scsi_Host *shost)
+{
+ struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
+ int rc;
+
+ if (diag_buffer_enable != -1 && diag_buffer_enable != 0)
+ mpt2sas_enable_diag_buffer(ioc, diag_buffer_enable);
+
+ ioc->start_scan = 1;
+ rc = mpt2sas_port_enable(ioc);
+
+ if (rc != 0)
+ printk(MPT2SAS_INFO_FMT "port enable: FAILED\n", ioc->name);
+}
+
+/**
+ * _scsih_scan_finished - scsi lld callback for .scan_finished
+ * @shost: SCSI host pointer
+ * @time: elapsed time of the scan in jiffies
+ *
+ * This function will be called periodically until it returns 1 with the
+ * scsi_host and the elapsed time of the scan in jiffies. In our implemention,
+ * we wait for firmware discovery to complete, then return 1.
+ */
+static int
+_scsih_scan_finished(struct Scsi_Host *shost, unsigned long time)
+{
+ struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
+
+ if (time >= (300 * HZ)) {
+ ioc->base_cmds.status = MPT2_CMD_NOT_USED;
+ printk(MPT2SAS_INFO_FMT "port enable: FAILED with timeout "
+ "(timeout=300s)\n", ioc->name);
+ ioc->is_driver_loading = 0;
+ return 1;
+ }
+
+ if (ioc->start_scan)
+ return 0;
+
+ if (ioc->start_scan_failed) {
+ printk(MPT2SAS_INFO_FMT "port enable: FAILED with "
+ "(ioc_status=0x%08x)\n", ioc->name, ioc->start_scan_failed);
+ ioc->is_driver_loading = 0;
+ ioc->wait_for_discovery_to_complete = 0;
+ ioc->remove_host = 1;
+ return 1;
+ }
+
+ printk(MPT2SAS_INFO_FMT "port enable: SUCCESS\n", ioc->name);
+ ioc->base_cmds.status = MPT2_CMD_NOT_USED;
+
+ if (ioc->wait_for_discovery_to_complete) {
+ ioc->wait_for_discovery_to_complete = 0;
+ _scsih_probe_devices(ioc);
+ }
+ mpt2sas_base_start_watchdog(ioc);
+ ioc->is_driver_loading = 0;
+ return 1;
+}
+
+