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authorMatthew Wilcox <matthew@wil.cx>2006-11-22 23:24:54 +0300
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-11-23 01:42:42 +0300
commit1aa8fab2acf1cb8b341131b726773fcff0abc707 (patch)
tree27590ddf03adce3b6244d60d4a818d9bdbbe85b0 /include/scsi/scsi_host.h
parent93b45af5c6b9d41bbe9da11442291ac4eefc15b4 (diff)
downloadlinux-1aa8fab2acf1cb8b341131b726773fcff0abc707.tar.xz
[SCSI] Make scsi_scan_host work for drivers which find their own targets
If a driver can find its own targets, it can now fill in scan_finished and (optionally) scan_start in the scsi_host_template. Then, when it calls scsi_scan_host(), it will be called back (from a thread if asynchronous discovery is enabled), first to start the scan, and then at intervals to check if the scan is completed. Also make scsi_prep_async_scan and scsi_finish_async_scan static. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi/scsi_host.h')
-rw-r--r--include/scsi/scsi_host.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index e618e711ea57..6d8945d71c65 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -241,6 +241,24 @@ struct scsi_host_template {
void (* target_destroy)(struct scsi_target *);
/*
+ * If a host has the ability to discover targets on its own instead
+ * of scanning the entire bus, it can fill in this function and
+ * call scsi_scan_host(). This function will be called periodically
+ * until it returns 1 with the scsi_host and the elapsed time of
+ * the scan in jiffies.
+ *
+ * Status: OPTIONAL
+ */
+ int (* scan_finished)(struct Scsi_Host *, unsigned long);
+
+ /*
+ * If the host wants to be called before the scan starts, but
+ * after the midlayer has set up ready for the scan, it can fill
+ * in this function.
+ */
+ void (* scan_start)(struct Scsi_Host *);
+
+ /*
* fill in this function to allow the queue depth of this host
* to be changeable (on a per device basis). returns either
* the current queue depth setting (may be different from what