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[S390] cio: introduce notifier for boxed state

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If a ccw device did not respond in time during internal io, we set it
into boxed state. With this patch we have the following behaviour:
 * the ccw driver will get a notification if the device was online and
   goes into the boxed state
 * if the device was disconnected and got boxed nothing special is to be
   done (it will be handled in reprobing later)
 * if the device got boxed while initial sensing it will be unregistered

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott
2009-03-31 19:16:05 +02:00
committed by Martin Schwidefsky
parent c4621a6264
commit 47593bfa10
5 changed files with 28 additions and 13 deletions
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2
arch/s390/include/asm/cio.h
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@@ -456,6 +456,8 @@ struct ciw {
#define CIO_OPER 0x0004
/* Sick revalidation of device. */
#define CIO_REVALIDATE 0x0008
/* Device did not respond in time. */
#define CIO_BOXED 0x0010
/**
* struct ccw_dev_id - unique identifier for ccw devices