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* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2019-07-111-2/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI updates from James Bottomley: "This is mostly update of the usual drivers: qla2xxx, hpsa, lpfc, ufs, mpt3sas, ibmvscsi, megaraid_sas, bnx2fc and hisi_sas as well as the removal of the osst driver (I heard from Willem privately that he would like the driver removed because all his test hardware has failed). Plus number of minor changes, spelling fixes and other trivia. The big merge conflict this time around is the SPDX licence tags. Following discussion on linux-next, we believe our version to be more accurate than the one in the tree, so the resolution is to take our version for all the SPDX conflicts" Note on the SPDX license tag conversion conflicts: the SCSI tree had done its own SPDX conversion, which in some cases conflicted with the treewide ones done by Thomas & co. In almost all cases, the conflicts were purely syntactic: the SCSI tree used the old-style SPDX tags ("GPL-2.0" and "GPL-2.0+") while the treewide conversion had used the new-style ones ("GPL-2.0-only" and "GPL-2.0-or-later"). In these cases I picked the new-style one. In a few cases, the SPDX conversion was actually different, though. As explained by James above, and in more detail in a pre-pull-request thread: "The other problem is actually substantive: In the libsas code Luben Tuikov originally specified gpl 2.0 only by dint of stating: * This file is licensed under GPLv2. In all the libsas files, but then muddied the water by quoting GPLv2 verbatim (which includes the or later than language). So for these files Christoph did the conversion to v2 only SPDX tags and Thomas converted to v2 or later tags" So in those cases, where the spdx tag substantially mattered, I took the SCSI tree conversion of it, but then also took the opportunity to turn the old-style "GPL-2.0" into a new-style "GPL-2.0-only" tag. Similarly, when there were whitespace differences or other differences to the comments around the copyright notices, I took the version from the SCSI tree as being the more specific conversion. Finally, in the spdx conversions that had no conflicts (because the treewide ones hadn't been done for those files), I just took the SCSI tree version as-is, even if it was old-style. The old-style conversions are perfectly valid, even if the "-only" and "-or-later" versions are perhaps more descriptive. * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (185 commits) scsi: qla2xxx: move IO flush to the front of NVME rport unregistration scsi: qla2xxx: Fix NVME cmd and LS cmd timeout race condition scsi: qla2xxx: on session delete, return nvme cmd scsi: qla2xxx: Fix kernel crash after disconnecting NVMe devices scsi: megaraid_sas: Update driver version to 07.710.06.00-rc1 scsi: megaraid_sas: Introduce various Aero performance modes scsi: megaraid_sas: Use high IOPS queues based on IO workload scsi: megaraid_sas: Set affinity for high IOPS reply queues scsi: megaraid_sas: Enable coalescing for high IOPS queues scsi: megaraid_sas: Add support for High IOPS queues scsi: megaraid_sas: Add support for MPI toolbox commands scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver scsi: megaraid_sas: RAID1 PCI bandwidth limit algorithm is applicable for only Ventura scsi: megaraid_sas: megaraid_sas: Add check for count returned by HOST_DEVICE_LIST DCMD scsi: megaraid_sas: Handle sequence JBOD map failure at driver level scsi: megaraid_sas: Don't send FPIO to RL Bypass queue scsi: megaraid_sas: In probe context, retry IOC INIT once if firmware is in fault scsi: megaraid_sas: Release Mutex lock before OCR in case of DCMD timeout scsi: megaraid_sas: Call disable_irq from process IRQ poll scsi: megaraid_sas: Remove few debug counters from IO path ...
| * scsi: ibmvscsi: fix tripping of blk_mq_run_hw_queue WARN_ONTyrel Datwyler2019-06-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After a successful SRP login response we call scsi_unblock_requests() to kick any pending IOs. The callback to process this SRP response happens in a tasklet and therefore is in softirq context. The result of such is that when blk-mq is enabled, it is no longer safe to call scsi_unblock_requests() from this context. The result of duing so triggers the following WARN_ON splat in dmesg after a host reset or CRQ reenablement. WARNING: CPU: 0 PID: 0 at block/blk-mq.c:1375 __blk_mq_run_hw_queue+0x120/0x180 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.0.0-rc8 #4 NIP [c0000000009771e0] __blk_mq_run_hw_queue+0x120/0x180 LR [c000000000977484] __blk_mq_delay_run_hw_queue+0x244/0x250 Call Trace: __blk_mq_delay_run_hw_queue+0x244/0x250 blk_mq_run_hw_queue+0x8c/0x1c0 blk_mq_run_hw_queues+0x60/0x90 scsi_run_queue+0x1e4/0x3b0 scsi_run_host_queues+0x48/0x80 login_rsp+0xb0/0x100 ibmvscsi_handle_crq+0x30c/0x3e0 ibmvscsi_task+0x54/0xe0 tasklet_action_common.isra.3+0xc4/0x1a0 __do_softirq+0x174/0x3f4 irq_exit+0xf0/0x120 __do_irq+0xb0/0x210 call_do_irq+0x14/0x24 do_IRQ+0x9c/0x130 hardware_interrupt_common+0x14c/0x150 This patch fixes the issue by introducing a new host action for unblocking the scsi requests in our seperate work thread. Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: ibmvscsi: redo driver work thread to use enum action statesTyrel Datwyler2019-06-181-2/+7
| | | | | | | | | | | | | | | | | | | | | | The current implemenation relies on two flags in the driver's private host structure to signal the need for a host reset or to reenable the CRQ after a LPAR migration. This patch does away with those flags and introduces a single action flag and defined enums for the supported kthread work actions. Lastly, the if/else logic is replaced with a switch statement. Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner2019-05-301-15/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scsi: ibmvscsi: add vscsi hosts to global list_headTyrel Datwyler2016-12-081-0/+1
| | | | | | | | | | | | | Add each vscsi host adatper to a new global list_head named ibmvscsi_head. There is no functional change. This is meant primarily as a convience for locating adapters from within the debugger or crash utility. [mkp: fixed typo] Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* ibmvscsis: Initial commit of IBM VSCSI Tgt DriverBryant G. Ly2016-07-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This driver is a pick up of the old IBM VIO scsi Target Driver that was started by Nick and Fujita 2-4 years ago. http://comments.gmane.org/gmane.linux.scsi/90119 The driver provides a virtual SCSI device on IBM Power Servers. This patch contains the fifth version for an initial merge of the tcm ibmvscsis driver. More information on this driver and config can be found: https://github.com/powervm/ibmvscsis/wiki/Configuration http://www.linux-iscsi.org/wiki/IBM_vSCSI (Drop extra libsrp review breakage + Fix kconfig typo - nab) Signed-off-by: Steven Royer <seroyer@linux.vnet.ibm.com> Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com> Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: FUJITA Tomonori <tomof@acm.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* ibmvscsi: set max_lun to 32Laurent Vivier2015-11-111-0/+1
| | | | | | | | | As defined in 4.6.9 of SAM-4, the encoding of LUN is on 5 bits (max_lun=32) and the current value is only 8. Set max_lun to IBMVSCSI_MAX_LUN (32). Signed-off-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* [SCSI] ibmvscsi: Remove backend abstractionBenjamin Herrenschmidt2012-09-241-22/+0
| | | | | | | | | | | | | | | Now that the iSeries code is gone the backend abstraction in this driver is no longer necessary, which allows us to consolidate the driver in one file. The side effect is that the module name is now ibmvscsi.ko which matches the driver hotplug name and fixes auto-load issues. [jejb:fix up checkpatch.pl errors] Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* powerpc: remove the legacy iSeries part of ibmvscsiStephen Rothwell2012-03-091-1/+0
| | | | | | | | | | | | The PowerPC legacy iSeries platform is being removed and this code is no longer selectable. There is more clean up that can be done, but this just gets the old code out of the way. Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Brian King <brking@linux.vnet.ibm.com> Cc: linux-scsi@vger.kernel.org Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* [SCSI] ibmvscsi: Fix softlockup on resumeBrian King2010-07-271-0/+4
| | | | | | | | | | | | This fixes a softlockup seen on resume. During resume, the CRQ must be reenabled. However, the H_ENABLE_CRQ hcall used to do this may return H_BUSY or H_LONG_BUSY. When this happens, the caller is expected to retry later. This patch changes a simple loop, which was causing the softlockup, to a loop at task level which sleeps between retries rather than simply spinning. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] ibmvscsi: Add suspend/resume supportBrian King2010-03-031-0/+1
| | | | | | | | | | Adds support for resuming from suspend for IBM VSCSI devices. We may have lost an interrupt over the suspend, so we just kick the interrupt handler to process anything that is outstanding. We expect to find a transport event indicating we need to reestablish our CRQ. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] ibmvscsi: Add support for capabilities MADBrian King2009-06-081-0/+4
| | | | | | | | | | | | | | Add support to ibmvscsi for the capabilities MAD. This command gets sent to the Virtual I/O server prior to login in order to communicate client capabilities. Additionally it returns information regarding capabilities that the server supports. The two main capabilities communicated in this MAD are related to partition migration and client reserve. Client reserve allows for SCSI-2 reservations to be sent to virtual disks which are backed by physical LUNs and will result in the reservation being sent to the physical LUN. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* ibmvscsi: driver enablement for CMORobert Jennings2008-07-251-0/+2
| | | | | | | | | | | | | | | | | | Enable the driver to function in a Cooperative Memory Overcommitment (CMO) environment. The following changes are made to enable the driver for CMO: * DMA mapping errors will not result in error messages if entitlement has been exceeded and resources were not available. * The driver has a get_desired_dma function defined to function in a CMO environment. It will indicate how much IO memory it would like to function. Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com> Acked by: Brian King <brking@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* [SCSI] Fix ibmvscsi client for multiplatform iSeries+pSeries kernelDavid Woodhouse2007-10-121-14/+18
| | | | | | | | | | | | | | | If you build a multiplatform kernel for iSeries and pSeries, with ibmvscsic support, the resulting client doesn't work on iSeries. This fixes that, using the appropriate low-level operations for the machine detected at runtime. [jejb: fixed up rejections around the srp transport patch] Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi: Add eh_host_reset_handlerBrian King2007-06-171-0/+1
| | | | | | | | | | | Adds an eh_host_reset_handler to ibmvscsi which resets the connection to the vscsi server. This patch also adds a timer to internally issues commands to prevent client hangs in the case of a misbehaving server. Tested by modifying the VIOS such that it would occasionally drop one or more request in sequence. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi: Changeable queue depthBrian King2007-05-291-0/+1
| | | | | | | Adds support for a changeable queue depth to ibmvscsi. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi: allow for dynamic adjustment of server request_limitRobert Jennings2007-04-011-0/+2
| | | | | | | | | | | The request limit calculations used previously on the client failed to mirror the state of the server. Additionally, when a value < 3 was provided there could be problems setting can_queue and handling abort and reset commands. Signed-off-by: "Robert Jennings" <rcj@linux.vnet.ibm.com> Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi: convert the ibmvscsi driver to use include/scsi/srp.hFUJITA Tomonori2006-04-131-1/+1
| | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi: handle re-enable firmware messageDave C Boutcher2006-01-261-0/+3
| | | | | | | | | | New versions of the Power5 firmware can send a "re-enable" message to the virtual scsi adapter. This fix makes us handle the message correctly. Without it, the driver goes catatonic and the system crashes unpleasantly. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi kexec fixDave C Boutcher2005-12-071-1/+1
| | | | | | | | | | | | | This makes ibmvscsi work correctly with the recent set of kexec patches that went in. This is based on work by Michael Ellerman, who chased this initially. He validated that it works during kexec. Handle kexec correctly in ibmvscsi. During kexec the adapter will not get cleaned up correctly, so we may need to reset it to make it sane again. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* [SCSI] ibmvscsi: handle large scatter/gather listsJames Bottomley2005-09-061-0/+2
| | | | | | | | | | | | | The maximum size of a scatter-gather list that the current IBM VSCSI Client can handle is 10. This patch adds large scatter-gather support to the client so that it is capable of handling up to SG_ALL(255) number of requests in the scatter-gather list. Signed-off-by: Linda Xie <lxie@us.ibm.com> Acked by: Dave C Boutcher <sleddog@us.ibm.com> Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+109
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!