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2008-01-23[SCSI] aacraid: respond to enclosure service eventsSalyzyn, Mark
Added support to respond to enclosure service events (controller AIFs) to add, online or offline physical targets reported to sg. Also added online and offlining of arrays. Removed an automatic variable definition in a sub block that hid an earlier definition, determined to be inert as the sub-block use did not interfere. Bumped the driver versioning to stamp the addition of this feature. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] sym53c8xx: fixes two bugs related to chip resetKrzysztof Helt
This patch fixes two bugs pointed by James Bottomley: 1. the if (!sym_data->io_reset). That variable is only ever filled by a stack based completion. If we find it non empty it means this code has been entered twice and we have a severe problem, so that should just become a BUG_ON(sym_data->io_reset). 2. sym_data->io_reset should be set to NULL before the routine is exited otherwise the PCI recovery code could end up completing what will be a bogus pointer into the stack. Big thanks to James Bottomley for help with the patch. Signed-off-by: Krzysztof Helt <krzysztof.h1@w.pl> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: add call to flush_kernel_dcache_pageSalyzyn, Mark
Some architectures require a call to flush_kernel_dcache_page for processor spoofed DMA operations. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Update lpfc driver version to 8.2.4James Smart
Update lpfc driver version to 8.2.4 Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Rework misplaced reference taking on node structureJames Smart
Rework misplaced reference taking on node structure Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Enhance debugfs useJames Smart
Enhance debugfs to dump HBA SLIM as well as Host SLIM Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Fix Unsolicited Data itemsJames Smart
Fix Drivers Unsolicited CT command handling - we did not handle multiframe sequences well. Fix error due to delay in replenishing buffers for unsolicited data. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Add additional sysfs and module parametersJames Smart
Made link speed and link topology modifiable via sysfs Make scatter gather Segment Count into a module parameter. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Make lpfc legacy I/O port freeTomohiro Kusumi
This is a patch written by Tomohiro Kusumi and submitted to linux-scsi: http://marc.info/?l=linux-scsi&m=118673720712152&w=2 The original patch comment: This patch makes Emulex lpfc driver legacy I/O port free. It has already been acked quite long time ago. So I resubmit the patch. http://lkml.org/lkml/2006/11/22/28 Current lpfc driver is already using pci_select_bars() and pci_enable_device_bars() when the PCI bus has been reset. So I think this patch should also be acked. Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@jp.fujitsu.com> Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Miscellaneous FixesJames Smart
Miscellaneous Fixes: - Fix a couple of sparse complaints - Reset the FCP recovery flag when the node is not a FCP2 device. - Speed up offline prep delays - Fixed a memory leak in lpfc_mem_alloc failure path - Fixed external loopback test. - Fixed error code returned from the driver when HBA is over heated. - Correct Max NPIV vport to limits read from adapter - Add missing locks around fc_flag and FC_NEEDS_REG_VPI - Add missing hba ids for device identification - Added support for SET_VARIABLE and MBX_WRITE_WWN mailbox commands - Changed all temperature event messages from warning to error - Fix reporting of link speed when link is down - Added support for MBX_WRITE_WWN mailbox command - Change del_timer_sync() in ISR to del_timer() in interrupt handler - Correct instances of beXX_to_cpu() that should be cpu_to_beXX() - Perform target flush before releasing node references on module unload - Avoid bogus devloss_tmo messages when driver unloads - Fix panic when HBA generates ERATT interupt - Fix mbox race condition and a workaround on back-to-back mailbox commands - Force NPIV off for pt2pt mode between 2 NPorts - Stop worker thread before removing fc_host. - Fix up discovery timeout error case due to missing clear_la - Tighten mailbox polling code to speed up detection of fast completions - Only allow DUMP_MEMORY if adapter offline due to overtemp errors - Added extended error information to the log messages in chip init. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Add parameters to enable and disable heartbeat and hba ↵James Smart
resets Add parameters to enable and disable heartbeat and hba resets Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Correct abort handler logicJames Smart
Correct Abort handler logic. It was unconditionally waiting a minimum of 2 seconds rather than looking for abort completion. Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] lpfc 8.2.4 : Miscellaneous Discovery/ELS FixesJames Smart
Miscellaneous Discovery/ELS Fixes: - Delay free's of ELS requests if adapter reject conditions - Fix concurrent PLOGI vs ADISC state handling - Add retry mechanism for GFF_ID - Correct some illegal state transitions around RSCN timeouts - Fix missing return in FAN handling Signed-off-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: improve queue balancingSalyzyn, Mark
The adapter queue is divided up equally to all the arrays to prevent command starvation to any individual array. On the other hand, physical targets are only granted a queue depth of one each. The code prior to this patch used to deal with the incremental discovery of targets, but the driver knows how many arrays are present prior to the scan so this knowledge is used to generate a better estimate for the queue depth. Remove the capability of 'physical=0' from preventing access to the class of adapters that have the RAID/SCSI mode of operation since none of the physicals on the SCSI channel are candidates ever for an array. As always, the user can override this default queue depth policy by making the appropriate adjustments utilizing sysfs. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: OS panic after Adapter panic (hardening).Salyzyn, Mark
In experiments in the lab we managed to trigger an Adapter firmware panic (BlinkLED) coincidentally while several pass-through ioctl command from the management software were outstanding on a bug only present on a class of RAID Adapters that require a hardware reset rather than a commanded reset. The net result was an attempt to time out the management software command as if it came from the SCSI layer resulting in an OS panic. Adapters that use commanded reset, management commands are returned failed by the Adapter correctly. The adapter firmware panic that resulted in this condition was also resolved, and there were no adapters in the field with this specific firmware bug so we do not expect any field reports. This is a rare or unlikely corner condition, and no reports have ever been forwarded from the field. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: fix multiple definition of automatic variable warning.Salyzyn, Mark
The 'entry' automatic variable was defined at the top and within a block that uses it, removed the definition from the block that uses it. Some cosmetic changes were made while in the same file. This patch should be inert. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: fix big endian issuesSalyzyn, Mark
Big endian systems issues discovered in the aacraid driver. Somewhat reverses a patch from November 7th of last year that removed swap operations because they formerly were being assigned to an u8 array when they should have been assigned to an le32 array. This patch is largely inert for any little endian processor architecture. It resolves a bug in delivering the BlinkLED AIF event to registered applications when the adapter or associated hardware was reset due to ill health. A rare corner case occurrence, also largely unnoticed by any as it was a new (untested!) feature. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: variable redefinition hides earlier warningSalyzyn, Mark
The parameter 'info' is reused, renamed the second to sinfo to represent supplemental adapter info, to suppress compile warning message. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: add sysfs report of RAID levelSalyzyn, Mark
Report the RAID level string for the SCSI device representing the array. Report is in /sys/class/scsi_device/#:#:#:#/device/level. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] aacraid: add parameter to control FUA and SYNCHRONIZE_CACHE policySalyzyn, Mark
aacraid.cache parameter, Disable Queue Flush commands: bit 0 - Disable FUA in WRITE SCSI commands bit 1 - Disable SYNCHRONIZE_CACHE SCSI command bit 2 - Disable only if Battery not protecting adapter supplied Cache e.g.: aacraid.cache=7 will disable the FUA and SYNCHRONIZE_CACHE commands if the adapter has reported that it's cache is battery backed up. This parameter permits experimentation with tradeoffs between performance and caching policy. Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] scsi_transport_spi: convert to attribute groupsJames Bottomley
This conversion makes full use of the is_visible() callback on attribute groups. Now, each device appears only with its capability flags in the transport class directory. Previously each device appeared with the capability of the host, so this is a functionality improvement. Converting to attribute groups allows us to sweep away most of the home grown #defines that were effectively doing the same thing. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-23[SCSI] add missing transport configure points for target and hostJames Bottomley
While trying to convert the SPI transport class to attribute groups, I discovered that we don't actually have any transport configure points for either the target or the host. This patch adds these missing transport class triggers. The host one is simply done after the add, the target one tries to be more clever and add it after devices may have been placed on the target (so the device configure will have set up the target parameters). Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] relax scsi dma alignmentJames Bottomley
This patch relaxes the default SCSI DMA alignment from 512 bytes to 4 bytes. I remember from previous discussions that usb and firewire have sector size alignment requirements, so I upped their alignments in the respective slave allocs. The reason for doing this is so that we don't get such a huge amount of copy overhead in bio_copy_user() for udev. (basically all inquiries it issues can now be directly mapped). Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] fix scsi_setup_command_freelist failure path raceFUJITA Tomonori
Looks like that host_cmd_pool_mutex are necessary here. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] sr: update to follow tray status correctlyJames Bottomley
Based on an original patch from: David Martin <tasio@tasio.net> When trying to get the drive status via ioctl CDROM_DRIVE_STATUS, with no disk it gives CDS_TRAY_OPEN even if the tray is closed. ioctl works as expected with ide-cd driver. Gentoo bug report: http://bugs.gentoo.org/show_bug.cgi?id=196879 Cc: Maarten Bressers <mbres@gentoo.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libsas: don't use made up error codesJames Bottomley
This is bad for two reasons: 1. If they're returned to outside applications, no-one knows what they mean. 2. Eventually they'll clash with the ever expanding standard error codes. The problem error code in question is ETASK. I've replaced this by ECOMM (communications error on send) a network error code that seems to most closely relay what ETASK meant. Acked-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libsas, bsg: pass errors through correctlyJames Bottomley
Currently in BSG, errors returned in req->errors aren't passed back to the calling programme (either via SG_IO or via read/write). Fix this, while preserving the SCSI convention of returning status in req->errors. Now update libsas to return errors correctly instead of to ignore them. Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libsas: don't treat underrun as an error on SMP tasksJames Bottomley
All SMP tasks sent through bsg generate messages like: sas: smp_execute_task: task to dev 500605b000001450 response: 0x0 status 0x81 Three times (because the task gets retried). Firstly, don't retry either overrun or underrun (the data buffer isn't going to change size) and secondly, just report the underrun but don't set an error for it. This is necessary so bsg can report back the residual. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libsas: add host SMP processingJames Bottomley
This adds support for host side SMP processing, via a separate SMP interpreter file. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] megaraid: add __devexit annotationAdrian Bunk
megaraid_remove_one() can become __devexit. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: "Patro, Sumant" <Sumant.Patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] atari_NCR5380, sun3_NCR5380: operator precedence fixRoel Kluin
SR_REQ is defined 0x20, but bitanding has no effect because '!' has a higher priority than '&' Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi class: bump versionMike Christie
Update version. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi_tcp: fix setting of r2tMike Christie
If we negotiate for X r2ts we have to use only X r2ts. We cannot round up (we could send less though). It is ok to fail if it is not something the driver can handle, so this patch just does that. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: use is_power_of_2vignesh babu
Replacing n & (n - 1) for power of 2 check by is_power_of_2(n) Signed-off-by: vignesh babu <vignesh.babu@wipro.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi_tcp: hold lock during data rsp processingMike Christie
iscsi_data_rsp needs to hold the sesison lock when it calls iscsi_update_cmdsn. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi_tcp: enable sg chainingMike Christie
The previous patches converted iscsi_tcp to support sg chaining. This patch sets the proper flags and sets sg_table size to 4096. This allows fs io to be capped at max_sectors, but passthrough IO to be limited by some other part of the kernel. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi, iscsi class: set tmf to a safe default and export in sysfsMike Christie
Older tools will not be setting the tmf time outs since they did not exists, so set them to a safe default. And export abort and lu reset timeout values in sysfs. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi_tcp: drop session when itt does not match any commandMike Christie
A target should never send us a itt that does not match a running task. If it does we do not really know what is coming down after the header, unless we evaluate the hdr and do some guessing sometimes. However, even if we know what is coming we probably do not have buffers for it or we cannot respond (if it is a r2t for example), so just drop the session. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi_tcp: stop leaking r2t_info's when the incoming R2T is badOlaf Kirch
iscsi_r2t_rsp checks the incoming R2T for sanity, and if it thinks it's fishy, it will drop it silently. In this case, we leaked an r2t_info object. If we do this often enough, we run into a BUG_ON some time later. Removed r2t wrappers and update patch by Mike Christie Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi: convert xmit path to iscsi chunksOlaf Kirch
Convert xmit to iscsi chunks. from michaelc@cs.wisc.edu: Bug fixes, more digest integration, sg chaining conversion and other sg wrapper changes, coding style sync up, and removal of io fields, like pdu_sent, that are not needed. Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: Drop host lock in queuecommandMike Christie
The driver does not need the host lock in queuecommand so drop it. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: clear conn->ctask when task is completed earlyMike Christie
If the current ctask is failed early, we legt the conn->ctask pointer pointing to a invalid task. When the xmit thread would send data for it, we would then oops. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: Do not fail commands immediately during logoutMike Christie
If the target requests a logout, then we do not want to fail commands to scsi-ml right away. This patch just fails in pending commands for a requeue immediately, and then lets iscsid handle running commands like normal recovery. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi_tcp: update the website URLFUJITA Tomonori
Use open-iscsi.org instead of linux-iscsi.sf.net, which hasn't been updated for ages. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: fix nop handlingMike Christie
During root boot and shutdown the target could send us nops. At this time iscsid cannot be running, so the target will drop the session and the boot or shutdown will hang. To handle this and allow us to better control when to check the network this patch moves the nop handling to the kernel. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: fix shutdownMike Christie
We were using the device delete sysfs file to remove each device then logout. Now in 2.6.21 this will not work because the sysfs delete file returns immediately and does not wait for the device removal to complete. This causes a hang if a cache sync is needed during shutdown. Before .21, that approach had other problems, so this patch fixes the shutdown code so that we remove the target and unbind the session before logging out and shut down the session Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: grab eh_mutex during host resetMike Christie
I thought we may not need the eh mutex during host reset, but that is wrong with the new shutdown code. When start_session_recovery sets the state to terminate then drops the session lock. The scsi eh thread could then grab the session lock see that we are terminating and then return failed to scsi-ml. scsi-ml's eh then owns the command and will do whatever it wants with it. But then the iscsi eh thread could grab the session lock and want to complete the scsi commands that we in the LLD, but it no longer owns them and kaboom. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] iscsi class: Use our own workq instead of common system one.Mike Christie
There is just too much going on through the common workq and something like a scsi device removal through sysfs affects how long it will take to recover the transport, mark it as failed, or shut it down gracefully. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi: do not block session during logoutMike Christie
There is not need to block the session during logout. Since we are going to fail the commands that were blocked just fail them immediately instead. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11[SCSI] libiscsi, iscsi_tcp: iscsi pool cleanupOlaf Kirch
iscsi_pool_init simplified iscsi_pool_init currently has a lot of duplicate kfree() calls it does when some allocation fails. This patch simplifies the code a little by using iscsi_pool_free to tear down the pool in case of an error. iscsi_pool_init also returns a copy of the item array to the caller. Not all callers use this array, so we make it optional. Instead of allocating a second array and return that, allocate just one array, of twice the size. Update users of iscsi_pool_{init,free} This patch drops the (now useless) second argument to iscsi_pool_free, and updates all callers. It also removes the ctask->r2ts array, which was never used anyway. Since the items argument to iscsi_pool_init is now optional, we can pass NULL instead. Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>