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path: root/drivers/s390/cio/chsc.c
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* [S390] cio: remove casts from/to (void *).Cornelia Huck2006-10-111-3/+3
| | | | | Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: Remove grace period for vary off chpid.Cornelia Huck2006-10-111-11/+6
| | | | | | | | | | | | The grace period handling introduced needless complexity. It didn't help the dasd driver (which can handle terminated I/O just well), and it doesn't help for long running channel programs (which won't complete during the grace period anyway). Terminating I/O using a path that just disappeared immediately is much more consistent with what the user expects. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: 0 is a valid chpid.Cornelia Huck2006-10-061-9/+16
| | | | | | | | In order to determine chpid validity, we need to check whether the corresponding path is specified in the pim. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: always query all paths on path verification.Peter Oberparleiter2006-09-201-1/+1
| | | | | | | | | | | | Reappearing channel paths are sometimes not utilized by CCW devices because path verification incorrectly relies on path-operational-mask information which is not updated until a channel path has been used again. Modify path verification procedure to always query all available paths to a device. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: subchannels in no-path state.Peter Oberparleiter2006-09-201-1/+2
| | | | | | | | | | | Subchannel may incorrectly remain in state no-path after channel paths have reappeared. Currently the scan for subchannels which are using a channel path ends at the first occurrence if a full link address was provided by the channel subsystem. The scan needs to continue over all subchannels. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] cio: no path after machine check.Peter Oberparleiter2006-08-301-2/+2
| | | | | | | | | | | | 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>
* [S390] cio: kernel stack overflow.Heiko Carstens2006-08-301-4/+2
| | | | | | | | | | | 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>
* [S390] path grouping and path verifications fixes.Cornelia Huck2006-07-121-0/+34
| | | | | | | | | | | | | | | | | | 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>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [S390] cio chpid offline.Cornelia Huck2006-06-291-2/+1
| | | | | | | | | | | | | | | | | After setting a path to a dasd offline at the SE, I/O hangs on that dasd for 5 minutes, then continues. I/O for which an interrupt will not be reported after the channel path has been disabled was not terminated by the common I/O layer, causing the dasd MIH to hit after 5 minutes. Be more aggressive in terminating I/O after setting a channel path offline. Also make sure to generate a fake irb if the device driver issues an I/O request after being notified of the killed I/O and clear residual information from the irb before trying to start the delayed verification. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [S390] channel measurement fix.Cornelia Huck2006-06-291-1/+2
| | | | | | | | Specify correct sizeof() in chp_measurement_read() and return correct amount of read data. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* [PATCH] s390: enable interrupts on error pathStefan Bader2006-04-281-2/+2
| | | | | | | | | | Interrupts can stay disabled if an error occurred in _chp_add(). Use spin_unlock_irq on the error paths to reenable interrupts. Signed-off-by: Stefan Bader <shbader@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: fix I/O termination race in cioPeter Oberparleiter2006-04-281-22/+4
| | | | | | | | | | | Fix a race condition in the I/O termination logic. The race can cause I/O to a dasd device to fail with no retry left after turning one channel path to the device off and on multiple times. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: kzalloc() conversion in drivers/s390Eric Sesterhenn2006-03-241-2/+1
| | | | | | | | | Convert all kmalloc + memset sequences in drivers/s390 to kzalloc usage. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: channel path measurementsCornelia Huck2006-03-241-22/+432
| | | | | | | | | | Gather extended measurements for channel paths from the channel subsystem and expose them to userspace via a sysfs attribute. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: improve response code handling in chsc_enable_facility()Cornelia Huck2006-03-061-0/+5
| | | | | | | | | | | | | Rather than checking for some known failures, check positively for the success response code 0x0001 and return -EIO for unrecognized failure response codes. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Greg Smith <gsmith@nc.rr.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: fix locking in __chp_add() and s390_subchannel_remove_chpid()Cornelia Huck2006-02-111-5/+5
| | | | | | | | | | | Fix locking in __chp_add() and s390_subchannel_remove_chpid(): Need to disable/enable because they are always called from a thread (and not directly from a machine check...) Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: Remove CVS generated informationHeiko Carstens2006-02-011-1/+0
| | | | | | | | | | | | | - Remove all CVS generated information like e.g. revision IDs from drivers/s390 and include/asm-s390 (none present in arch/s390). - Add newline at end of arch/s390/lib/Makefile to avoid diff message. Acked-by: Andreas Herrmann <aherrman@de.ibm.com> Acked-by: Frank Pavlic <pavlic@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: email-address changeCornelia Huck2006-01-141-2/+2
| | | | | | | Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: multiple subchannel sets supportCornelia Huck2006-01-061-8/+60
| | | | | | | | | | | | Add support for multiple subchannel sets. Works with arbitrary devices in subchannel set 1 and is transparent to device drivers. Although currently only two subchannel sets are available, this will work with the architectured maximum number of subchannel sets as well. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: introduce struct channel_subsystemCornelia Huck2006-01-061-13/+19
| | | | | | | | | | struct channel_subsystem encapsulates several per channel subsystem properties, like status of chpids or the global path group id. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: introduce for_each_subchannelCornelia Huck2006-01-061-179/+193
| | | | | | | | | | | for_each_subchannel() is an iterator calling a function for every possible subchannel id until non-zero is returned. Convert the current iterating functions to it. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: introduce struct subchannel_idCornelia Huck2006-01-061-28/+35
| | | | | | | | | | | | | | This patch introduces a struct subchannel_id containing the subchannel number (formerly referred to as "irq") and switches code formerly relying on the subchannel number over to it. While we're touching inline assemblies anyway, make sure they have correct memory constraints. Signed-off-by: Cornelia Huck <cohuck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: resource accessibility event handlingCornelia Huck2005-07-271-7/+3
| | | | | | | | | When processing resource accessibility events, continue searching for further affected subchannels if a link address is provided in the event information. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Driver Core: drivers/char/raw3270.c - drivers/net/netiucv.c: update ↵Yani Ioannou2005-06-201-3/+3
| | | | | | | device attribute callbacks Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+1114
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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