Commit Graph

366 Commits

Author SHA1 Message Date
Heiko Carstens
1375fc1fb0 [S390] __exit cleanup.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:59:12 +02:00
Martin Schwidefsky
0fee644ada [S390] cleanup sysinfo and add system z9 specific extensions.
With System z9 additional fields have been added to the output of the
store system information instruction. This patch adds the new model
information field and the alternate cpu capability fields to the
output of /proc/sysinfo. While we at it clean up the code as well.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:59:10 +02:00
Horst Hummel
b0035f127e [S390] dasd default debug level.
Enhanced default DBF level to get most important messages
in debug feature files.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:59:07 +02:00
Martin Schwidefsky
a00bfd7147 [S390] dasd deadlock after state change pending interrupt.
The dasd_device_from_cdev function is called from interrupt context
to get the struct dasd_device associated with a ccw device. The
driver_data of the ccw device points to the dasd_devmap structure
which contains the pointer to the dasd_device structure. The lock
that protects the dasd_devmap structure is acquire with out irqsave.
To prevent the deadlock in dasd_device_from_cdev if it is called
from interrupt context the dependency to the dasd_devmap structure
needs to be removed. Let the driver_data of the ccw device point
to the dasd_device structure directly and use the ccw device lock
to protect the access.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:59:05 +02:00
Frank Pavlic
47addc84b4 [S390] qdio_get_micros return value.
qdio_get_micros is supposed to return microseconds. The get_clock()
return value needs to be shifted by 12 to get to microseconds.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:59:03 +02:00
Heiko Carstens
39b083fe1c [S390] empty function defines.
Use do { } while (0) constructs instead of empty defines to avoid
subtle compile bugs.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:51 +02:00
Michael Holzheu
ff6b8ea68f [S390] ipl/dump on panic.
It is now possible to specify a ccw/fcp dump device which is used to
automatically create a system dump in case of a kernel panic. The dump
device can be configured under /sys/firmware/dump.
In addition it is now possible to specify a ccw/fcp device which is used
for the next reboot of Linux. The reipl device can be configured under
/sys/firmware/reipl.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:49 +02:00
Ralph Wuerthner
5432114baf [S390] zcrypt secure key cryptography extension.
Allow the user space to send extended cprb messages directly to the
PCIXCC / CEX2C cards. This allows the CCA library to construct special
crypto requests that use "secure" keys that are stored on the card.

Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:36 +02:00
Martin Schwidefsky
fe3a1be59c [S390] zcrypt driver Makefile, Kconfig and monolithic build.
The Makefile and Kconfig changes should be obvious. The monolithic
build option is there to create an old-style z90crypt module for
backward compatability to older distributions.

Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:34 +02:00
Martin Schwidefsky
6684af1a07 [S390] zcrypt PCICC, PCIXCC coprocessor card ap bus drivers.
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:32 +02:00
Martin Schwidefsky
963ed931c3 [S390] zcrypt CEX2A, CEX2C, PCICA accelerator card ap bus drivers.
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:29 +02:00
Martin Schwidefsky
2dbc2418ba [S390] zcrypt user space interface.
The user space interface of the zcrypt device driver implements the old
user space interface as defined by the old z90crypt driver. Everything
is there, the /dev/z90crypt misc character device, all the lovely ioctls
and the /proc file. Even writing to the z90crypt proc file to configure
the crypto device still works. It stands to reason to remove the proc
write function someday since a much cleaner configuration via the sysfs
is now available.

The ap bus device drivers register crypto cards to the zcrypt user
space interface. The request router of the user space interface
picks one of the registered cards based on the predicted latency
for the request and calls the driver via a callback found in the
zcrypt_ops of the device. The request router only knows which
operations the card can do and the minimum / maximum number of bits
a request can have.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:27 +02:00
Martin Schwidefsky
1534c3820c [S390] zcrypt adjunct processor bus.
Add a bus for the adjunct processor interface. Up to 64 devices can
be connect to the ap bus interface, each device with 16 domains. That
makes 1024 message queues. The interface is asynchronous, the answer
to a message sent to a queue needs to be received at some later point
in time. Unfortunately the interface does not provide interrupts when
a message reply is pending. So the ap bus needs to implement some
fancy polling, each active queue is polled once per 1/HZ second or
continuously if an idle cpus exsists and the poll thread is activ
(see poll_thread parameter).

The ap bus uses the sysfs path /sys/bus/ap and has two bus attributes,
ap_domain and config_time. The ap_domain selects one of the 16 domains
to be used for this system. This limits the maximum number of ap devices
to 64. The config_time attribute contains the number of seconds between
two ap bus scans to find new devices.

The ap bus uses the modalias entries of the form "ap:tN" to autoload
the ap driver for hardware type N. Currently known types are:
3 - PCICC, 4 - PCICA, 5 - PCIXCC, 6 - CEX2A and 7 - CEX2C.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:25 +02:00
Martin Schwidefsky
7561b974e0 [S390] remove old z90crypt driver.
The z90crypt driver has served its term. It is replaced by the shiny
new zcrypt device driver.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-09-20 15:58:22 +02:00
Frank Pavlic
8b98a37c4b [PATCH] s390: qeth driver fixes [6/6]
[PATCH 9/9] s390: qeth driver fixes [6/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
	- Hipersockets has no IPV6 support, thus prevent issueing
	  SETRTG_IPV6 control commands on Hipersockets devices.
	- fixed error handling in qeth_sysfs_(un)register

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:08 -04:00
Frank Pavlic
f956b6902e [PATCH] s390: qeth driver fixes [5/6]
[PATCH 8/9] s390: qeth driver fixes [5/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
	fix kernel panic in qdio queue handling.
	qeth_qdio_clear_card() could be invoked by 2 CPUs
	simultaneously (for example reboot event and recovery).

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
09d2d38a15 [PATCH] s390: qeth driver fixes [4/6]
[PATCH 7/9] s390: qeth driver fixes [4/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
	- fix kernel crash due to race,
	  set card->state to SOFTSETUP after
	  card and card->dev are initialized properly.
	- remove CONFIG_QETH_PERF_STATS, use sysfs attribute instead,
	  as we want to have the ability to turn on/off the
	  statistics at runtime.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
f7b65d70a3 [PATCH] s390: qeth driver fixes [3/6]
[PATCH 6/9] s390: qeth driver fixes [3/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
       	fixed kernel panic caused by qeth driver:
        Using a bonding device qeth driver will realloc
        headroom for every skb coming from the bond device.
        Once this happens qeth frees the original skb and
        set the skb pointer to the new realloced skb.
        Under heavy transmit workload (e.g.UDP streams) through bond
        network device the qdio output queue might get full.
        In this case we return with EBUSY from qeth_send_packet.
        Returning to qeth_hard_start_xmit routine
        the skb address on the stack still points to the old address,
        which has been freed before.
        Returning from qeth_hard_start_xmit with EBUSY results in
        requeuing the skb. In this case it corrupts the qdisc queue
        and results in kernel panic.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
1fda1a120b [PATCH] s390: qeth driver fixes [2/6]
[PATCH 5/9] s390: qeth driver fixes [2/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
	- fixed error handling in create_device_attributes
	- fixed some minor bugs in IPv4
	  and IPv6 address checking

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
330b636908 [PATCH] s390: qeth driver fixes [1/6]
[PATCH 4/9] s390: qeth driver fixes [1/6]

From: Frank Pavlic <fpavlic@de.ibm.com>
	- Drop incoming packets with vlan_tag set
          if card->vlangrp is not set.
        - use always vlan_hwaccel_rx to pass
	  vlan frames to the stack.
        - fix recovery problem. Device was recovered
	  properly but still not working.
	  netif_carrier_on call right before
          recovery start fixes it.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
f449c565ea [PATCH] s390: Makefile cleanup
[PATCH 3/9] s390: Makefile cleanup

From: Frank Pavlic <fpavlic@de.ibm.com>
 	remove CONFIG_MPC from Makefile which was
	introduced accidently in the past.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
16a83b3077 [PATCH] s390: netiucv driver fixes
[PATCH 2/9] s390: netiucv driver fixes

From: Frank Pavlic <fpavlic@de.ibm.com>
	- missing lock initialization added
        - avoid duplicate iucv-interfaces to the same peer
       	- rw-lock added for manipulating the list of
          defined iucv connections

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:07 -04:00
Frank Pavlic
4c7ae6ea59 [PATCH] s390: minor s390 network driver fixes
Hi Jeff,
this is a RESEND of the nine s390 network driver patches.
I finally found  that my kmail corrupted almost every patch
I sent the last time. Please apply these 9 patches and forget
about my first attempt! Sorry for the delay, I had some fights
with sendmail, IMAP and mutt configuration.

Frank

[RESEND PATCH 1/9] s390: minor s390 network driver fixes

From: Frank Pavlic <fpavlic@de.ibm.com>
	- iucv driver:
          use do { } while (0) constructs
	  instead of empty defines to avoid compile bugs.
        - ctc driver:
          missing lock initialization added
        - lcs driver:
          BUG_ON usage was removed accidently
	  with the last lcs patch.
          Put them back in place.

Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-17 01:03:06 -04:00
Stefan Bader
7b7db1b595 [S390] cio: unsolicited interrupts during sense pgid.
Calls to set a device online with path grouping may get stuck in
some cases because certain device conditions where discarded after
unsolicited interrupts.
Check subchannel activity after unsolicited interrupts and retry
the operation if the subchannel is idle.

Signed-off-by: Stefan Bader <shbader@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-30 14:33:39 +02:00
Peter Oberparleiter
3b88508a31 [S390] cio: no path after machine check.
Devices enter no-path state after disabling a channel path
via the SE even though another path has been reenabled at the SE.
The devices are set into no-path state before triggering path
verification even though other paths may have become available.
To fix this trigger path verification before setting a device into
no-path state.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-30 14:33:37 +02:00
Heiko Carstens
292888c81e [S390] cio: kernel stack overflow.
Use different kind of assignment to make sure gcc doesn't create code
that creates temp variables on the stack, assigns values to it and
copies the content of the whole temp variable to the destination.
This reduces stack usage of e.g. ccwgroup_driver_register from 976
to 48 bytes instead.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-30 14:33:35 +02:00
Horst Hummel
8f61701bdf [S390] dasd: fix device shutdown process.
Fix clear_IO handling (need to wait for interrupt) and
introduced error-handling in shutdown processing.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-30 14:33:33 +02:00
Greg Kroah-Hartman
f834c75542 Merge gregkh@master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2006-08-26 13:04:23 -07:00
Greg Kroah-Hartman
428a7e3e46 Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6 2006-08-24 10:54:22 -07:00
Horst Hummel
8e79a441a4 [S390] dasd PAV enabling.
The subsystem check in the PAV code is incorrect, it enables PAV
per device instead of per subsystem.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-24 13:22:36 +02:00
Heiko Carstens
3d8f3f3c36 [PATCH] s390: fix arp_tbl lock usage in qeth
qeth: bhs must be disabled when accessing neighbour tables.

=================================
[ INFO: inconsistent lock state ]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-19 17:44:30 -04:00
Peter Oberparleiter
b18a60e7c2 [S390] inaccessible PAV alias devices on LPAR.
In some situations PAV alias devices on LPAR are not accessible.
The initialization procedure required to enable access to PAV alias
devices has to be performed per storage server subsystem and not
only once per storage server.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-16 13:49:33 +02:00
Heiko Carstens
2f6c55fc31 [S390] dasd slab cache alignment.
The dasd_page_cache should return page addresses and therefore the
cache must be created with an alignment of PAGE_SIZE.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-16 13:49:27 +02:00
Horst Hummel
d0710c7c9e [S390] dasd calls kzalloc while holding a spinlock.
The dasd function dasd_set_uid calls kzalloc while holding the
dasd_devmap_lock. Rearrange the code to do the memory allocation
outside the lock.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-10 15:45:16 +02:00
Horst Hummel
ebc4599990 [S390] dasd set offline kernel bug.
The request queue flush function of the dasd driver has to dequeue
the requests first and then call the end request function. Otherwise
a kernel bug in ll_rw_block.c might get triggered.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-09 10:30:22 +02:00
Martin Schwidefsky
37ab46a3f4 [S390] xpram system device class.
Remove system device class for xpram. It creates the directory hierarchy
under /sys/devices/system/xpram/xpram0. The xpram0 directory is empty and
it is always created while xpram1 and following devices are always missing,
independent if the devices exist or not. Since the xpram devices are
listed in /proc/partitions and /sys/block/ as slram<x> the system device
class for xpram is meaningless.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-07 18:13:06 +02:00
Peter Oberparleiter
65200c291c [S390] lost interrupt after chpid vary off/on cycle.
I/O on a CCW device may stall if a channel path to that device is
logicaly varied off/on. A user I/O interrupt can get misinterpreted
as interrupt for an internal path verification operation due to a
missing check and is therefore never reported to the device driver.

Correct check for pending interruptions before starting path
verification.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-07 17:00:33 +02:00
Cornelia Huck
4bc0c4f9e7 [S390] retry after deferred condition code.
Do a retry of read device characteristics / read configuration
data when a deferred condition code 1 is encountered in
ccw_device_wake_up().

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-07 17:00:30 +02:00
Heiko Carstens
25a2001a28 [S390] tape class return value handling.
Without this patch register_tape_dev() will always fail, but might
return a value that is not an error number. This will lead to accesses
to already freed memory areas...

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-08-07 17:00:28 +02:00
James Bottomley
00dd7b7d26 Merge ../linux-2.6
Conflicts:

	arch/ia64/hp/sim/simscsi.c

Stylistic differences in two separate fixes for buffer->request_buffer
problem.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-06 12:42:33 -05:00
Andreas Herrmann
58b3ac07fe [SCSI] zfcp: bump version number
New version number fo zfcp driver.

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-06 11:31:33 -05:00
Andreas Herrmann
f6c0e7a7b3 [SCSI] zfcp: minor erp bug fixes
Bug fixes for zfcp's erp:
- trigger adapter reopen if do_QDIO fails
- avoid erp deadlock if registration of scsi target or remote port hang
- do not treat as error if exchange port data fails
- decrease timeout for target reset and aborts
- mark unit failed if slave_destroy is called

Additionally some code cleanup was done:
- made some functions void when retval is not of interest
- shortened initialization of zfcp's host_template
- corrected some comments

Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-06 11:31:17 -05:00
Volker Sameske
fea9d6c7bc [SCSI] zfcp: improve management of request IDs
Improve request handling. Use hash table to manage request IDs.

Signed-off-by: Volker Sameske <sameske@de.ibm.com>
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-06 11:31:00 -05:00
Cornelia Huck
1708822984 [S390] duplicate ccw devices in ccwgroup.
Fail to create a ccwgroup device if a ccw device is passed in twice.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-27 14:00:33 +02:00
Peter Oberparleiter
ba4ba8a69d [S390] permanent subchannel busy conditions may cause I/O stall
In special conditions where a subchannel rejects the HALT I/O-
instruction with a busy indication (cc 2), I/O may stall.
I/O request termination logic retries HALT I/O indefinitely
because it expects HALT I/O to alter the subchannel status which
is not true when cc 2 is returned.
In case of a busy indication, try CLEAR I/O instruction immediately.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-27 14:00:23 +02:00
Heiko Carstens
d7cf0d57ef [S390] sysfs_create_xxx return values.
Take return values of sysfs_create_group & friends into account.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-18 13:46:58 +02:00
Cornelia Huck
13ffa927ab [S390] channel measurement interval display.
Display avg_sample_interval in nanoseconds, like it is documented.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-17 16:09:28 +02:00
Heiko Carstens
f257b06322 [S390] xpram module parameter parsing - take 2.
Don't use memparse since the default size modifier is 'k'.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-17 16:09:23 +02:00
Heiko Carstens
d2c993d845 [S390] Fix sparse warnings.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-12 16:41:55 +02:00
Cornelia Huck
7e560814de [S390] path grouping and path verifications fixes.
1. Multipath devices for which SetPGID is not supported are not handled well.
   Use NOP ccws for path verification (sans path grouping) when SetPGID is not
   supported.
2. Check for PGIDs already set with SensePGID on _all_ paths (not just the
   first one) and try to find a common one. Moan if no common PGID can be
   found (and use NOP verification). If no PGIDs have been set, use the css
   global PGID (as before). (Rationale: SetPGID will get a command reject if
   the PGID it tries to set does not match the already set PGID.)
3. Immediately before reboot, issue RESET CHANNEL PATH (rcp) on all chpids. This
   will remove the old PGIDs. rcp will generate solicited CRWs which can be
   savely ignored by the machine check handler (all other actions create
   unsolicited CRWs).

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-07-12 16:40:19 +02:00