diff options
author | Matthew Wilcox <matthew@wil.cx> | 2006-11-22 15:24:54 -0500 |
---|---|---|
committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-11-22 17:42:42 -0500 |
commit | 1aa8fab2acf1cb8b341131b726773fcff0abc707 (patch) | |
tree | 27590ddf03adce3b6244d60d4a818d9bdbbe85b0 /include/scsi/scsi_host.h | |
parent | 93b45af5c6b9d41bbe9da11442291ac4eefc15b4 (diff) |
[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.h | 18 |
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 { | |||
241 | void (* target_destroy)(struct scsi_target *); | 241 | void (* target_destroy)(struct scsi_target *); |
242 | 242 | ||
243 | /* | 243 | /* |
244 | * If a host has the ability to discover targets on its own instead | ||
245 | * of scanning the entire bus, it can fill in this function and | ||
246 | * call scsi_scan_host(). This function will be called periodically | ||
247 | * until it returns 1 with the scsi_host and the elapsed time of | ||
248 | * the scan in jiffies. | ||
249 | * | ||
250 | * Status: OPTIONAL | ||
251 | */ | ||
252 | int (* scan_finished)(struct Scsi_Host *, unsigned long); | ||
253 | |||
254 | /* | ||
255 | * If the host wants to be called before the scan starts, but | ||
256 | * after the midlayer has set up ready for the scan, it can fill | ||
257 | * in this function. | ||
258 | */ | ||
259 | void (* scan_start)(struct Scsi_Host *); | ||
260 | |||
261 | /* | ||
244 | * fill in this function to allow the queue depth of this host | 262 | * fill in this function to allow the queue depth of this host |
245 | * to be changeable (on a per device basis). returns either | 263 | * to be changeable (on a per device basis). returns either |
246 | * the current queue depth setting (may be different from what | 264 | * the current queue depth setting (may be different from what |