diff options
author | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 14:21:55 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 14:21:55 -0500 |
commit | 88032b322a38b37335c8cb2e3473a45c81d280eb (patch) | |
tree | cd722ab15b18a10f6b1aa50656b8da713ee8b799 /Documentation/s390/driver-model.txt | |
parent | 63f3861d2fbf8ccbad1386ac9ac8b822c036ea00 (diff) | |
parent | 028d9b3cc62cb9dd31f1b5929edb3c23612cfccc (diff) |
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] Poison init section before freeing it.
[S390] Use add_active_range() and free_area_init_nodes().
[S390] Virtual memmap for s390.
[S390] Update documentation for dynamic subchannel mapping.
[S390] Use dev->groups for adding/removing the subchannel attribute group.
[S390] Support for disconnected devices reappearing on another subchannel.
[S390] subchannel lock conversion.
[S390] Some preparations for the dynamic subchannel mapping patch.
[S390] runtime switch for qdio performance statistics
[S390] New DASD feature for ERP related logging
[S390] add reset call handler to the ap bus.
[S390] more workqueue fixes.
[S390] workqueue fixes.
[S390] uaccess_pt: add missing down_read() and convert to is_init().
Diffstat (limited to 'Documentation/s390/driver-model.txt')
-rw-r--r-- | Documentation/s390/driver-model.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/s390/driver-model.txt b/Documentation/s390/driver-model.txt index 77bf450ec39b..e938c442277d 100644 --- a/Documentation/s390/driver-model.txt +++ b/Documentation/s390/driver-model.txt | |||
@@ -18,11 +18,18 @@ devices/ | |||
18 | - 0.0.0002/ | 18 | - 0.0.0002/ |
19 | - 0.1.0000/0.1.1234/ | 19 | - 0.1.0000/0.1.1234/ |
20 | ... | 20 | ... |
21 | - defunct/ | ||
21 | 22 | ||
22 | In this example, device 0815 is accessed via subchannel 0 in subchannel set 0, | 23 | In this example, device 0815 is accessed via subchannel 0 in subchannel set 0, |
23 | device 4711 via subchannel 1 in subchannel set 0, and subchannel 2 is a non-I/O | 24 | device 4711 via subchannel 1 in subchannel set 0, and subchannel 2 is a non-I/O |
24 | subchannel. Device 1234 is accessed via subchannel 0 in subchannel set 1. | 25 | subchannel. Device 1234 is accessed via subchannel 0 in subchannel set 1. |
25 | 26 | ||
27 | The subchannel named 'defunct' does not represent any real subchannel on the | ||
28 | system; it is a pseudo subchannel where disconnnected ccw devices are moved to | ||
29 | if they are displaced by another ccw device becoming operational on their | ||
30 | former subchannel. The ccw devices will be moved again to a proper subchannel | ||
31 | if they become operational again on that subchannel. | ||
32 | |||
26 | You should address a ccw device via its bus id (e.g. 0.0.4711); the device can | 33 | You should address a ccw device via its bus id (e.g. 0.0.4711); the device can |
27 | be found under bus/ccw/devices/. | 34 | be found under bus/ccw/devices/. |
28 | 35 | ||