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path: root/drivers/s390/scsi/zfcp_ccw.c
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2009-04-27[SCSI] zfcp: Set WKA-port to offline on adapter deactivationSwen Schillig
The nameserver port might be in state online when the adapter is offlined. On adapter reactivation the nameserver port is not re-opened due to the PORT_ONLINE status. This results in an unsuccessful recovery. In forcing the nameserver port status to offline on all adapter offline events this issue is prevented. Waiting for the reference count to drop to zero in zfcp_wka_port_offline is not required, so remove it. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-31[S390] cio: introduce notifier for boxed stateSebastian Ott
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>
2009-03-12[SCSI] zfcp: Ensure all work is cancelled on adapter dequeueSwen Schillig
A scheduled work might still be pending, running while the adapter is in progress to get dequeued from the system. This can lead to an invalid pointer dereference (Oops). Once the adpater is set online again, ensure the nameserver environment is initialized to the appropriate values again. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-12[SCSI] zfcp: replace current ERP logging with a more convenient versionSwen Schillig
The current number based id ERP logging is replaced by a string based tag version. The benefit is an easier location of the code in question and the removal of the lengthy array referencing the individual messages. The string (7 bytes) based version does not use more space since those bytes were "used" anyway due to the alignment of the structure. The encoding of the 7 byte string is as follows [0-1] = filename [2-5] = task/function [6] = section Due to the character of this string (fixed length) a string termination is not required here. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-12[SCSI] zfcp: Remove UNIT_REGISTERED status flagChristof Schmitt
Use the device pointer in zfcp_unit for tracking if we have a registered SCSI device. With this approach, the flag ZFCP_STATUS_UNIT_REGISTERED is only redundant and can be removed. Acked-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29[SCSI] zfcp: register with SCSI layer on ccw registrationSwen Schillig
Synchronize the registration and de-registration with the SCSI layer at CCW registration, de-registration. Before we registered with the SCSI layer on adapter activation. This way the reg and de-reg process is in balance. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-25[S390] convert zfcp printks to pr_xxx macros.Christof Schmitt
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-11-05[SCSI] zfcp: Wait for port scan to complete when setting adapter onlineChristof Schmitt
Attaching a unit immediately after setting the adapter online should be possible. The problem right now is that the port_scan runs from a workqueue and has not finished when the set_online call returns and the sysfs structures for the ports are not available yet. Fix that by waiting for the port scan to complete. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-10-03[SCSI] zfcp: Simplify zfcp data structuresChristof Schmitt
Reduce the size of zfcp data structures by removing unused and redundant members. scsi_lun is only the mangled version of the fcp_lun. So, remove the redundant field and use the fcp_lun instead. Since the queue lock and the pci_batch indicator are only used in the request queue, move them from the common queue struct to the adapter struct. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-10-03[SCSI] zfcp: Simplify get_adapter_by_busidSwen Schillig
Call the helper function from cio instead looping through all zfcp adapters. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-10-03[SCSI] zfcp: remove unused references, declarations and flagsSwen Schillig
- Remove unused references and declarations, including one instance of the FC ls_adisc struct that has been defined twice. - Also remove the flags COMMON_OPENING, COMMON_CLOSING, ADAPTER_REGISTERED and XPORT_OK that are only set and cleared, but not checked anywhere. - Remove the zfcp specific atomic_test_mask makro. Simply use atomic_read directly instead. - Remove the zfcp internal sg helper functions and switch the places where it is still used to call sg_virt directly. - With the update of the QDIO code, the QDIO data structures no longer use the volatile type qualifier. Now we can also remove the volatile qualifiers from the zfcp code. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-10-03[SCSI] zfcp: Update message with input from reviewChristof Schmitt
Update the kernel messages in zfcp with input from the message review and remove some messages that have been identified as redundant. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-08-29[SCSI] zfcp: Simplify ccw notify handlerChristof Schmitt
The notify handler does not change the list of adapters, it only triggers erp actions to open or shutdown the adapter. We don't need to hold the config semaphore and wait for the erp to complete. This is a prerequisite for a fix in the s390 common i/o code. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-07-12[SCSI] zfcp: Cleanup of code in zfcp_aux.cSwen Schillig
Overall cleanup of zfcp_aux.c to simplify code and follow kernel coding style. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-07-12[SCSI] zfcp: Cleanup code in zfcp_ccwChristof Schmitt
Overall cleanup in file zfcp_ccw.c. Fix coding style issues, remove useless macros and messages and convert remaining messages to standard macros. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-18[SCSI] zfcp: fix 31 bit compile warningsMartin Peschke
drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_fsf_incoming_els_rscn’: drivers/s390/scsi/zfcp_aux.c:1379: warning: cast from pointer to integer of different size drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_fsf_incoming_els_plogi’: drivers/s390/scsi/zfcp_aux.c:1432: warning: cast from pointer to integer of different size drivers/s390/scsi/zfcp_aux.c: In function ‘zfcp_fsf_incoming_els_logo’: drivers/s390/scsi/zfcp_aux.c:1457: warning: cast from pointer to integer of different size .. Just passing pointers rids us of these warnings and improves readability. Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-07[SCSI] zfcp: Remove obsolete erp_dbf traceMartin Peschke
This patch removes the now obsolete erp_dbf trace. Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-07[SCSI] zfcp: Trace all triggers of error recovery activityMartin Peschke
This patch allows any recovery event to be traced back to an exact cause, e.g. a particular request identified by an id (address). Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-04-07[SCSI] zfcp: Add traces for state changes.Martin Peschke
This patch writes a trace record which provides information about state changes for adapters, ports and units, e.g. target failure, targets becoming online, targets being temporarily blocked due to pending recovery, targets which have been recovered successfully etc. Signed-off-by: Martin Peschke <mp3@de.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits) [SCSI] usbstorage: use last_sector_bug flag universally [SCSI] libsas: abstract STP task status into a function [SCSI] ultrastor: clean up inline asm warnings [SCSI] aic7xxx: fix firmware build [SCSI] aacraid: fib context lock for management ioctls [SCSI] ch: remove forward declarations [SCSI] ch: fix device minor number management bug [SCSI] ch: handle class_device_create failure properly [SCSI] NCR5380: fix section mismatch [SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices [SCSI] IB/iSER: add logical unit reset support [SCSI] don't use __GFP_DMA for sense buffers if not required [SCSI] use dynamically allocated sense buffer [SCSI] scsi.h: add macro for enclosure bit of inquiry data [SCSI] sd: add fix for devices with last sector access problems [SCSI] fix pcmcia compile problem [SCSI] aacraid: add Voodoo Lite class of cards. [SCSI] aacraid: add new driver features flags [SCSI] qla2xxx: Update version number to 8.02.00-k7. [SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command. ...
2008-01-24zfcp: Use device_driver default attribute groups.Cornelia Huck
CC: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-01-11[SCSI] zfcp: Remove SCSI devices when removing complete adapterChristof Schmitt
The common I/O layer can call remove a handler to inform zfcp that a device disappeared. The handler zfcp_ccw_remove then removes all unit, port and the adapter data structures. Removing the units requires that the SCSI devices are removed first. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-10-15Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (207 commits) [SCSI] gdth: fix CONFIG_ISA build failure [SCSI] esp_scsi: remove __dev{init,exit} [SCSI] gdth: !use_sg cleanup and use of scsi accessors [SCSI] gdth: Move members from SCp to gdth_cmndinfo, stage 2 [SCSI] gdth: Setup proper per-command private data [SCSI] gdth: Remove gdth_ctr_tab[] [SCSI] gdth: switch to modern scsi host registration [SCSI] gdth: gdth_interrupt() gdth_get_status() & gdth_wait() fixes [SCSI] gdth: clean up host private data [SCSI] gdth: Remove virt hosts [SCSI] gdth: Reorder scsi_host_template intitializers [SCSI] gdth: kill gdth_{read,write}[bwl] wrappers [SCSI] gdth: Remove 2.4.x support, in-kernel changelog [SCSI] gdth: split out pci probing [SCSI] gdth: split out eisa probing [SCSI] gdth: split out isa probing gdth: Make one abuse of scsi_cmnd less obvious [SCSI] NCR5380: Use scsi_eh API for REQUEST_SENSE invocation [SCSI] usb storage: use scsi_eh API in REQUEST_SENSE execution [SCSI] scsi_error: Refactoring scsi_error to facilitate in synchronous REQUEST_SENSE ...
2007-10-12[SCSI] zfcp: Enable debug feature before setting adapter onlineChristof Schmitt
Already register the debug feature before the zfcp adapter is set online. This allows to use the debug feature to investigate the online/offline sequence. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-10-12[S390] cio: Introduce ccw_bus_type.shutdown.Cornelia Huck
Introduce a shutdown method for the ccw bus that calls the driver specific shutdown method in struct ccw_driver. Switch zfcp to the new ccw_driver shutdown method. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-16[SCSI] zfcp: IO stall after deleting and path checker changes after ↵Michael Loehr
reenabling zfcp devices IO stall after deleting and path checker changes after reenabling zfcp device Setting one zfcp device offline using chccwdev in a multipath environment and waiting will lead to IO stall on all paths. After setting the zfcp device back online using chccwdev, the devices with io stall will have a different path checker. Devices corresponding to the deleted units are never freed. This has the effect that 'slave_destroy' is never called and zfcp still thinks that this unit is registered (ZFCP_STATUS_UNIT_REGISTERED is still set). Hence the erp routine is not called correctly and the unit is not enabled properly. Do not delete rport and the sdev. Just set the host to block on 'offline'. Setting host online again will then remove the blocked status and everything is fine again. Signed-off-by: Michael Loehr <mloehr2@linux.vnet.ibm.com> Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-09-23[SCSI] zfcp: remove zfcp_ccw_unregister functionHeiko Carstens
Remove unused zfcp_ccw_unregister function (leftover from zfcp's module_exit era). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-08-06[SCSI] zfcp: improve management of request IDsVolker Sameske
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>
2006-05-28[SCSI] zfcp: (cleanup) shortened copyright and author informationAndreas Herrmann
Copyright update, shortened file headers, shortened author information. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-02-01[PATCH] s390: Remove CVS generated informationHeiko Carstens
- 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>
2005-09-19[SCSI] zfcp: add additional fc_host attributesAndreas Herrmann
this patch adds some fc host attributes and removes its equivalents from the zfcp_adapter structure and zfcp specific sysfs subtree. Furthermore it removes superfluous calls to fc_remort_port_delete when an adapter is set offline because rports will be removed by fc_remove_host anyway. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-08-28[PATCH] zfcp: bugfix and compile fixesHeiko Carstens
Bugfix (usage of uninitialized pointer in zfcp_port_dequeue) and compile fixes for the zfcp device driver. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-27[PATCH] zfcp: add rports to enable scsi_add_device to work againAndreas Herrmann
This patch fixes a severe problem with 2.6.13-rc7. Due to recent SCSI changes it is not possible to add any LUNs to the zfcp device driver anymore. With registration of remote ports this is fixed. Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com> Acked-by: James Bottomley <jejb@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
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!