summaryrefslogtreecommitdiffstats
path: root/drivers/ieee1394/nodemgr.c
diff options
context:
space:
mode:
authorStefan Richter <stefanr@s5r6.in-berlin.de>2007-05-27 13:17:15 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2007-05-31 21:40:13 +0200
commitd7794c86686a05276de42f145e485099426aca68 (patch)
treeb62da0b0424914f84f851887eec48ad8dfbf0421 /drivers/ieee1394/nodemgr.c
parenta52938f3e2e7c1dd2f00775016703991b7809c42 (diff)
downloadlinux-d7794c86686a05276de42f145e485099426aca68.tar.bz2
ieee1394: sbp2: offer SAM-conforming target port ID in sysfs
With "modprobe sbp2 long_ieee1394_id=y", the format of /sys/bus/scsi/devices/*:*:*:*/ieee1394_id is changed from e.g. 0001041010004beb:0:0 to 0001041010004beb:00042c:0000. The longer format fully conforms to object identifier sizes as per SAM(-2...4) and reflects what the SAM target port identifier is meant to contain: A Discovery ID allegedly specified by ISO/IEC 13213:1994 --- however there is no such thing; the authors of SAM probably meant Directory ID). Especially target nodes with multiple dynamically added targets may use Directory IDs to persistently identify target ports. The new format is independent of implementation details of nodemgr. Thus the same ieee1394_id attribute format can be implemented in the new firewire stack. The ieee1394_id is typically used to create persistently named links in /dev/disk/by-id. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/ieee1394/nodemgr.c')
-rw-r--r--drivers/ieee1394/nodemgr.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index c291602a12d7..81b3864d2ba7 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -977,6 +977,7 @@ static struct unit_directory *nodemgr_process_unit_directory
ud->ne = ne;
ud->ignore_driver = ignore_drivers;
ud->address = ud_kv->offset + CSR1212_REGISTER_SPACE_BASE;
+ ud->directory_id = ud->address & 0xffffff;
ud->ud_kv = ud_kv;
ud->id = (*id)++;
@@ -1085,6 +1086,10 @@ static struct unit_directory *nodemgr_process_unit_directory
break;
+ case CSR1212_KV_ID_DIRECTORY_ID:
+ ud->directory_id = kv->value.immediate;
+ break;
+
default:
break;
}