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* nvme: fix directive command numd calculationKwan (Hingkwan) Huen-SSI2017-08-101-1/+1
| | | | | | | | | The numd field of directive receive command takes number of dwords to transfer. This fix has the correct calculation for numd. Signed-off-by: Kwan (Hingkwan) Huen-SSI <kwan.huen@samsung.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme: fix nvme reset command timeout handlingKeith Busch2017-08-101-7/+20
| | | | | | | | | | | | | | | We need to return an error if a timeout occurs on any NVMe command during initialization. Without this, the nvme reset work will be stuck. A timeout will have a negative error code, meaning we need to stop initializing the controller. All postitive returns mean the controller is still usable. bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196325 Signed-off-by: Keith Busch <keith.busch@intel.com> Cc: Martin Peres <martin.peres@intel.com> [jth consolidated cleanup path ] Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme-pci: fix CMB sysfs file removal in reset pathMax Gurtovoy2017-08-101-11/+7
| | | | | | | | | | | | Currently we create the sysfs entry even if we fail mapping it. In that case, the unmapping will not remove the sysfs created file. There is no good reason to create a sysfs entry for a non working CMB and show his characteristics. Fixes: f63572dff ("nvme: unmap CMB and remove sysfs file in reset path") Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Stephen Bates <sbates@raithlin.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme: strip trailing 0-bytes in wwid_showMartin Wilck2017-08-101-2/+4
| | | | | | | | | | | | Some broken controllers (such as earlier Linux targets) pad model or serial fields with 0-bytes rather than spaces. The NVMe spec disallows 0 bytes in "ASCII" fields. Thus strip trailing 0-bytes, too. Also make sure that we get no underflow for pathological input. Signed-off-by: Martin Wilck <mwilck@suse.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme: validate admin queue before unquiesceScott Bauer2017-07-261-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With a misbehaving controller it's possible we'll never enter the live state and create an admin queue. When we fail out of reset work it's possible we failed out early enough without setting up the admin queue. We tear down queues after a failed reset, but needed to do some more sanitization. Fixes 443bd90f2cca: "nvme: host: unquiesce queue in nvme_kill_queues()" [ 189.650995] nvme nvme1: pci function 0000:0b:00.0 [ 317.680055] nvme nvme0: Device not ready; aborting reset [ 317.680183] nvme nvme0: Removing after probe failure status: -19 [ 317.681258] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 317.681397] general protection fault: 0000 [#1] SMP KASAN [ 317.682984] CPU: 3 PID: 477 Comm: kworker/3:2 Not tainted 4.13.0-rc1+ #5 [ 317.683112] Hardware name: Gigabyte Technology Co., Ltd. Z170X-UD5/Z170X-UD5-CF, BIOS F5 03/07/2016 [ 317.683284] Workqueue: events nvme_remove_dead_ctrl_work [nvme] [ 317.683398] task: ffff8803b0990000 task.stack: ffff8803c2ef0000 [ 317.683516] RIP: 0010:blk_mq_unquiesce_queue+0x2b/0xa0 [ 317.683614] RSP: 0018:ffff8803c2ef7d40 EFLAGS: 00010282 [ 317.683716] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1006fbdcde3 [ 317.683847] RDX: 0000000000000038 RSI: 1ffff1006f5a9245 RDI: 0000000000000000 [ 317.683978] RBP: ffff8803c2ef7d58 R08: 1ffff1007bcdc974 R09: 0000000000000000 [ 317.684108] R10: 1ffff1007bcdc975 R11: 0000000000000000 R12: 00000000000001c0 [ 317.684239] R13: ffff88037ad49228 R14: ffff88037ad492d0 R15: ffff88037ad492e0 [ 317.684371] FS: 0000000000000000(0000) GS:ffff8803de6c0000(0000) knlGS:0000000000000000 [ 317.684519] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 317.684627] CR2: 0000002d1860c000 CR3: 000000045b40d000 CR4: 00000000003406e0 [ 317.684758] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 317.684888] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 317.685018] Call Trace: [ 317.685084] nvme_kill_queues+0x4d/0x170 [nvme_core] [ 317.685185] nvme_remove_dead_ctrl_work+0x3a/0x90 [nvme] [ 317.685289] process_one_work+0x771/0x1170 [ 317.685372] worker_thread+0xde/0x11e0 [ 317.685452] ? pci_mmcfg_check_reserved+0x110/0x110 [ 317.685550] kthread+0x2d3/0x3d0 [ 317.685617] ? process_one_work+0x1170/0x1170 [ 317.685704] ? kthread_create_on_node+0xc0/0xc0 [ 317.685785] ret_from_fork+0x25/0x30 [ 317.685798] Code: 0f 1f 44 00 00 55 48 b8 00 00 00 00 00 fc ff df 48 89 e5 41 54 4c 8d a7 c0 01 00 00 53 48 89 fb 4c 89 e2 48 c1 ea 03 48 83 ec 08 <80> 3c 02 00 75 50 48 8b bb c0 01 00 00 e8 33 8a f9 00 0f ba b3 [ 317.685872] RIP: blk_mq_unquiesce_queue+0x2b/0xa0 RSP: ffff8803c2ef7d40 [ 317.685908] ---[ end trace a3f8704150b1e8b4 ]--- Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme-pci: fix HMB size calculationChristoph Hellwig2017-07-251-3/+3
| | | | | | | | | | | | | | It's possible the preferred HMB size may not be a multiple of the chunk_size. This patch moves len to function scope and uses that in the for loop increment so the last iteration doesn't cause the total size to exceed the allocated HMB size. Based on an earlier patch from Keith Busch. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Fixes: 87ad72a59a38 ("nvme-pci: implement host memory buffer support")
* nvme-fc: revise TRADDR parsingJames Smart2017-07-251-49/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The FC-NVME spec hasn't locked down on the format string for TRADDR. Currently the spec is lobbying for "nn-<16hexdigits>:pn-<16hexdigits>" where the wwn's are hex values but not prefixed by 0x. Most implementations so far expect a string format of "nn-0x<16hexdigits>:pn-0x<16hexdigits>" to be used. The transport uses the match_u64 parser which requires a leading 0x prefix to set the base properly. If it's not there, a match will either fail or return a base 10 value. The resolution in T11 is pushing out. Therefore, to fix things now and to cover any eventuality and any implementations already in the field, this patch adds support for both formats. The change consists of replacing the token matching routine with a routine that validates the fixed string format, and then builds a local copy of the hex name with a 0x prefix before calling the system parser. Note: the same parser routine exists in both the initiator and target transports. Given this is about the only "shared" item, we chose to replicate rather than create an interdendency on some shared code. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme-fc: address target disconnect race conditions in fcp io submitJames Smart2017-07-251-8/+11
| | | | | | | | | | | | | | | There are cases where threads are in the process of submitting new io when the LLDD calls in to remove the remote port. In some cases, the next io actually goes to the LLDD, who knows the remoteport isn't present and rejects it. To properly recovery/restart these i/o's we don't want to hard fail them, we want to treat them as temporary resource errors in which a delayed retry will work. Add a couple more checks on remoteport connectivity and commonize the busy response handling when it's seen. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme: also provide a UUID in the WWID sysfs attributeJohannes Thumshirn2017-07-251-0/+3
| | | | | | | | | | | | | | | The WWID sysfs attribute can provide multiple means of a World Wide ID for a NVMe device. It can either be a NGUID, a EUI-64 or a concatenation of VID, Serial Number, Model and the Namespace ID in this order of preference. If the target also sends us a UUID use the UUID for identification and give it the highest priority. This eases generation of /dev/disk/by-* symlinks. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
* nvme-pci: Fix an error handling path in 'nvme_probe()'Christophe JAILLET2017-07-201-3/+4
| | | | | | | | | | | Release resources in the correct order in order not to miss a 'put_device()' if 'nvme_dev_map()' fails. Fixes: b00a726a9fd8 ("NVMe: Don't unmap controller registers on reset") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* nvme-pci: Remove nvme_setup_prps BUG_ONKeith Busch2017-07-201-8/+25
| | | | | | | | | | | | | This patch replaces the invalid nvme SGL kernel panic with a warning, and returns an appropriate error. The warning will occur only on the first occurance, and sgl details will be printed to help debug how the request was allowed to form. Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* nvme-pci: add another device ID with stripe quirkDavid Wayne Fugate2017-07-201-0/+3
| | | | | | | | | | Adds a fourth Intel controller which has the "stripe" quirk. Signed-off-by: David Wayne Fugate <david.fugate@intel.com> Acked-by: Keith Busch <keith.busch@intel.com> Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* nvme: fix byte swapping in the streams codeChristoph Hellwig2017-07-201-1/+1
| | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds2017-07-115-159/+172
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull more block updates from Jens Axboe: "This is a followup for block changes, that didn't make the initial pull request. It's a bit of a mixed bag, this contains: - A followup pull request from Sagi for NVMe. Outside of fixups for NVMe, it also includes a series for ensuring that we properly quiesce hardware queues when browsing live tags. - Set of integrity fixes from Dmitry (mostly), fixing various issues for folks using DIF/DIX. - Fix for a bug introduced in cciss, with the req init changes. From Christoph. - Fix for a bug in BFQ, from Paolo. - Two followup fixes for lightnvm/pblk from Javier. - Depth fix from Ming for blk-mq-sched. - Also from Ming, performance fix for mtip32xx that was introduced with the dynamic initialization of commands" * 'for-linus' of git://git.kernel.dk/linux-block: (44 commits) block: call bio_uninit in bio_endio nvmet: avoid unneeded assignment of submit_bio return value nvme-pci: add module parameter for io queue depth nvme-pci: compile warnings in nvme_alloc_host_mem() nvmet_fc: Accept variable pad lengths on Create Association LS nvme_fc/nvmet_fc: revise Create Association descriptor length lightnvm: pblk: remove unnecessary checks lightnvm: pblk: control I/O flow also on tear down cciss: initialize struct scsi_req null_blk: fix error flow for shared tags during module_init block: Fix __blkdev_issue_zeroout loop nvme-rdma: unconditionally recycle the request mr nvme: split nvme_uninit_ctrl into stop and uninit virtio_blk: quiesce/unquiesce live IO when entering PM states mtip32xx: quiesce request queues to make sure no submissions are inflight nbd: quiesce request queues to make sure no submissions are inflight nvme: kick requeue list when requeueing a request instead of when starting the queues nvme-pci: quiesce/unquiesce admin_q instead of start/stop its hw queues nvme-loop: quiesce/unquiesce admin_q instead of start/stop its hw queues nvme-fc: quiesce/unquiesce admin_q instead of start/stop its hw queues ...
| * Merge branch 'nvme-4.13' of git://git.infradead.org/nvme into for-linusJens Axboe2017-07-105-159/+172
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull followup NVMe (mostly) changes from Sagi: I added the quiesce/unquiesce patches in here as it's easy for me easily apply changes on top. It has accumulated reviews and includes mostly nvme anyway, please tell me if you don't want to take them with this. This includes: - quiesce/unquiesce fixes in nvme and others from me - nvme-fc add create association padding spec updates from James - some more quirking from MKP - nvmet nit cleanup from Max - Fix nvme-rdma racy RDMA completion signalling from Marta - some centralization patches from me - add tagset nr_hw_queues updates on controller resets in nvme drivers from me - nvme-rdma fix resources recycling when doing error recovery from me - minor cleanups in nvme-fc from me
| | * nvme-pci: add module parameter for io queue depthweiping zhang2017-07-101-2/+22
| | | | | | | | | | | | | | | | | | | | | Adjust io queue depth more easily, and make sure io queue depth >= 2. Signed-off-by: weiping zhang <zhangweiping@didichuxing.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-pci: compile warnings in nvme_alloc_host_mem()Dan Carpenter2017-07-101-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "i" should be signed or it could cause a forever loop on the cleanup path. "size" can be used uninitialized. Fixes: 87ad72a59a38 ("nvme-pci: implement host memory buffer support") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-rdma: unconditionally recycle the request mrSagi Grimberg2017-07-061-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When our RDMA queue-pair is torn down with high load of I/O traffic, we have no way of knowing if the memory region was actually registered by the reg_mr work request as it completion flushes with error (hw might have done it or not). So in order to not deal with all this uncertanty, we simply recycle the MR in reinit_request. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme: split nvme_uninit_ctrl into stop and uninitSagi Grimberg2017-07-065-47/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Usually before we teardown the controller we want to: 1. complete/cancel any ctrl inflight works 2. remove ctrl namespaces (only for removal though, resets shouldn't remove any namespaces). but we do not want to destroy the controller device as we might use it for logging during the teardown stage. This patch adds nvme_start_ctrl() which queues inflight controller works (aen, ns scan, queue start and keep-alive if kato is set) and nvme_stop_ctrl() which cancels the works namespace removal is left to the callers to handle. Move nvme_uninit_ctrl after we are done with the controller device. Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme: kick requeue list when requeueing a request instead of when starting ↵Sagi Grimberg2017-07-061-17/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the queues When we requeue a request, we can always insert the request back to the scheduler instead of doing it when restarting the queues and kicking the requeue work, so get rid of the requeue kick in nvme (core and drivers). Also, now there is no need start hw queues in nvme_kill_queues We don't stop the hw queues anymore, so no need to start them. Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-pci: quiesce/unquiesce admin_q instead of start/stop its hw queuesSagi Grimberg2017-07-061-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | unlike blk_mq_stop_hw_queues and blk_mq_start_stopped_hw_queues quiescing/unquiescing respects the submission path rcu grace. Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-fc: quiesce/unquiesce admin_q instead of start/stop its hw queuesSagi Grimberg2017-07-061-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | unlike blk_mq_stop_hw_queues and blk_mq_start_stopped_hw_queues quiescing/unquiescing respects the submission path rcu grace. Also, make sure to unquiesce before cleanup the admin queue. Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-By: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-rdma: quiesce/unquiesce admin_q instead of start/stop its hw queuesSagi Grimberg2017-07-061-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | unlike blk_mq_stop_hw_queues and blk_mq_start_stopped_hw_queues quiescing/unquiescing respects the submission path rcu grace. Also make sure to kick the requeue list when appropriate. Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-rdma: remove race conditions from IB signallingMarta Rybczynska2017-07-061-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch improves the way the RDMA IB signalling is done by using atomic operations for the signalling variable. This avoids race conditions on sig_count. The signalling interval changes slightly and is now the largest power of two not larger than queue depth / 2. ilog() usage idea by Bart Van Assche. Signed-off-by: Marta Rybczynska <marta.rybczynska@kalray.eu> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: stable@vger.kernel.org
| | * nvme-fc: use blk_mq_delay_run_hw_queue instead of open-coding itSagi Grimberg2017-07-041-4/+3
| | | | | | | | | | | | | | | Cc: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-fc: update tagset nr_hw_queues after queues reinitSagi Grimberg2017-07-041-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | We might have more/less queues once we reconnect/reset. For example due to cpu going online/offline or controller constraints. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-rdma: update tagset nr_hw_queues after reconnecting/resettingSagi Grimberg2017-07-041-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | We might have more/less queues once we reconnect/reset. For example due to cpu going online/offline or controller constraints. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-fc: don't override opts->nr_io_queuesSagi Grimberg2017-07-041-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Its what the user passed, so its probably a better idea to keep it intact. Also, limit the number of I/O queues to max online cpus and the lport maximum hw queues. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme-pci: rename to nvme_pci_configure_admin_queueSagi Grimberg2017-07-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | we are going to need the name for the core routine... Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme: move ctrl cap to struct nvme_ctrlSagi Grimberg2017-07-024-21/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All transports use either a private cache of controller cap or an on-stack copy, move it to the generic struct nvme_ctrl. In the future it will also be maintained by the core. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme: move queue_count to the nvme_ctrlSagi Grimberg2017-07-024-46/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All all transports use the queue_count in exactly the same, so move it to the generic struct nvme_ctrl. In the future it will also be maintained by the core. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-By: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
| | * nvme: Quirks for PM1725 controllersMartin K. Petersen2017-07-021-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PM1725 controllers have a couple of quirks that need to be handled in the driver: - I/O queue depth must be limited to 64 entries on controllers that do not report MQES. - The host interface registers go offline briefly while resetting the chip. Thus a delay is needed before checking whether the controller is ready. Note that the admin queue depth is also limited to 64 on older versions of this board. Since our NVME_AQ_DEPTH is now 32 that is no longer an issue. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
* | | Merge tag 'pci-v4.13-changes' of ↵Linus Torvalds2017-07-081-6/+9
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - add sysfs max_link_speed/width, current_link_speed/width (Wong Vee Khee) - make host bridge IRQ mapping much more generic (Matthew Minter, Lorenzo Pieralisi) - convert most drivers to pci_scan_root_bus_bridge() (Lorenzo Pieralisi) - mutex sriov_configure() (Jakub Kicinski) - mutex pci_error_handlers callbacks (Christoph Hellwig) - split ->reset_notify() into ->reset_prepare()/reset_done() (Christoph Hellwig) - support multiple PCIe portdrv interrupts for MSI as well as MSI-X (Gabriele Paoloni) - allocate MSI/MSI-X vector for Downstream Port Containment (Gabriele Paoloni) - fix MSI IRQ affinity pre/post/min_vecs issue (Michael Hernandez) - test INTx masking during enumeration, not at run-time (Piotr Gregor) - avoid using device_may_wakeup() for runtime PM (Rafael J. Wysocki) - restore the status of PCI devices across hibernation (Chen Yu) - keep parent resources that start at 0x0 (Ard Biesheuvel) - enable ECRC only if device supports it (Bjorn Helgaas) - restore PRI and PASID state after Function-Level Reset (CQ Tang) - skip DPC event if device is not present (Keith Busch) - check domain when matching SMBIOS info (Sujith Pandel) - mark Intel XXV710 NIC INTx masking as broken (Alex Williamson) - avoid AMD SB7xx EHCI USB wakeup defect (Kai-Heng Feng) - work around long-standing Macbook Pro poweroff issue (Bjorn Helgaas) - add Switchtec "running" status flag (Logan Gunthorpe) - fix dra7xx incorrect RW1C IRQ register usage (Arvind Yadav) - modify xilinx-nwl IRQ chip for legacy interrupts (Bharat Kumar Gogada) - move VMD SRCU cleanup after bus, child device removal (Jon Derrick) - add Faraday clock handling (Linus Walleij) - configure Rockchip MPS and reorganize (Shawn Lin) - limit Qualcomm TLP size to 2K (hardware issue) (Srinivas Kandagatla) - support Tegra MSI 64-bit addressing (Thierry Reding) - use Rockchip normal (not privileged) register bank (Shawn Lin) - add HiSilicon Kirin SoC PCIe controller driver (Xiaowei Song) - add Sigma Designs Tango SMP8759 PCIe controller driver (Marc Gonzalez) - add MediaTek PCIe host controller support (Ryder Lee) - add Qualcomm IPQ4019 support (John Crispin) - add HyperV vPCI protocol v1.2 support (Jork Loeser) - add i.MX6 regulator support (Quentin Schulz) * tag 'pci-v4.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (113 commits) PCI: tango: Add Sigma Designs Tango SMP8759 PCIe host bridge support PCI: Add DT binding for Sigma Designs Tango PCIe controller PCI: rockchip: Use normal register bank for config accessors dt-bindings: PCI: Add documentation for MediaTek PCIe PCI: Remove __pci_dev_reset() and pci_dev_reset() PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done() PCI: xilinx: Make of_device_ids const PCI: xilinx-nwl: Modify IRQ chip for legacy interrupts PCI: vmd: Move SRCU cleanup after bus, child device removal PCI: vmd: Correct comment: VMD domains start at 0x10000, not 0x1000 PCI: versatile: Add local struct device pointers PCI: tegra: Do not allocate MSI target memory PCI: tegra: Support MSI 64-bit addressing PCI: rockchip: Use local struct device pointer consistently PCI: rockchip: Check for clk_prepare_enable() errors during resume MAINTAINERS: Remove Wenrui Li as Rockchip PCIe driver maintainer PCI: rockchip: Configure RC's MPS setting PCI: rockchip: Reconfigure configuration space header type PCI: rockchip: Split out rockchip_pcie_cfg_configuration_accesses() PCI: rockchip: Move configuration accesses into rockchip_pcie_cfg_atu() ...
| * | | PCI: Split ->reset_notify() method into ->reset_prepare() and ->reset_done()Christoph Hellwig2017-07-031-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pci_error_handlers->reset_notify() method had a flag to indicate whether to prepare for or clean up after a reset. The prepare and done cases have no shared functionality whatsoever, so split them into separate methods. [bhelgaas: changelog, update locking comments] Link: http://lkml.kernel.org/r/20170601111039.8913-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* | | | Merge branch 'irq-core-for-linus' of ↵Linus Torvalds2017-07-031-1/+1
|\ \ \ \ | |_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq updates from Thomas Gleixner: "The irq department delivers: - Expand the generic infrastructure handling the irq migration on CPU hotplug and convert X86 over to it. (Thomas Gleixner) Aside of consolidating code this is a preparatory change for: - Finalizing the affinity management for multi-queue devices. The main change here is to shut down interrupts which are affine to a outgoing CPU and reenabling them when the CPU comes online again. That avoids moving interrupts pointlessly around and breaking and reestablishing affinities for no value. (Christoph Hellwig) Note: This contains also the BLOCK-MQ and NVME changes which depend on the rework of the irq core infrastructure. Jens acked them and agreed that they should go with the irq changes. - Consolidation of irq domain code (Marc Zyngier) - State tracking consolidation in the core code (Jeffy Chen) - Add debug infrastructure for hierarchical irq domains (Thomas Gleixner) - Infrastructure enhancement for managing generic interrupt chips via devmem (Bartosz Golaszewski) - Constification work all over the place (Tobias Klauser) - Two new interrupt controller drivers for MVEBU (Thomas Petazzoni) - The usual set of fixes, updates and enhancements all over the place" * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (112 commits) irqchip/or1k-pic: Fix interrupt acknowledgement irqchip/irq-mvebu-gicp: Allocate enough memory for spi_bitmap irqchip/gic-v3: Fix out-of-bound access in gic_set_affinity nvme: Allocate queues for all possible CPUs blk-mq: Create hctx for each present CPU blk-mq: Include all present CPUs in the default queue mapping genirq: Avoid unnecessary low level irq function calls genirq: Set irq masked state when initializing irq_desc genirq/timings: Add infrastructure for estimating the next interrupt arrival time genirq/timings: Add infrastructure to track the interrupt timings genirq/debugfs: Remove pointless NULL pointer check irqchip/gic-v3-its: Don't assume GICv3 hardware supports 16bit INTID irqchip/gic-v3-its: Add ACPI NUMA node mapping irqchip/gic-v3-its-platform-msi: Make of_device_ids const irqchip/gic-v3-its: Make of_device_ids const irqchip/irq-mvebu-icu: Add new driver for Marvell ICU irqchip/irq-mvebu-gicp: Add new driver for Marvell GICP dt-bindings/interrupt-controller: Add DT binding for the Marvell ICU genirq/irqdomain: Remove auto-recursive hierarchy support irqchip/MSI: Use irq_domain_update_bus_token instead of an open coded access ...
| * | | nvme: Allocate queues for all possible CPUsChristoph Hellwig2017-06-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike most drіvers that simply pass the maximum possible vectors to pci_alloc_irq_vectors NVMe needs to configure the device before allocting the vectors, so it needs a manual update for the new scheme of using all present CPUs. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Cc: Keith Busch <keith.busch@intel.com> Cc: linux-block@vger.kernel.org Cc: linux-nvme@lists.infradead.org Link: http://lkml.kernel.org/r/20170626102058.10200-4-hch@lst.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | Merge branch 'for-4.13/block' of git://git.kernel.dk/linux-blockLinus Torvalds2017-07-0311-3152/+975
|\ \ \ \ | | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull core block/IO updates from Jens Axboe: "This is the main pull request for the block layer for 4.13. Not a huge round in terms of features, but there's a lot of churn related to some core cleanups. Note this depends on the UUID tree pull request, that Christoph already sent out. This pull request contains: - A series from Christoph, unifying the error/stats codes in the block layer. We now use blk_status_t everywhere, instead of using different schemes for different places. - Also from Christoph, some cleanups around request allocation and IO scheduler interactions in blk-mq. - And yet another series from Christoph, cleaning up how we handle and do bounce buffering in the block layer. - A blk-mq debugfs series from Bart, further improving on the support we have for exporting internal information to aid debugging IO hangs or stalls. - Also from Bart, a series that cleans up the request initialization differences across types of devices. - A series from Goldwyn Rodrigues, allowing the block layer to return failure if we will block and the user asked for non-blocking. - Patch from Hannes for supporting setting loop devices block size to that of the underlying device. - Two series of patches from Javier, fixing various issues with lightnvm, particular around pblk. - A series from me, adding support for write hints. This comes with NVMe support as well, so applications can help guide data placement on flash to improve performance, latencies, and write amplification. - A series from Ming, improving and hardening blk-mq support for stopping/starting and quiescing hardware queues. - Two pull requests for NVMe updates. Nothing major on the feature side, but lots of cleanups and bug fixes. From the usual crew. - A series from Neil Brown, greatly improving the bio rescue set support. Most notably, this kills the bio rescue work queues, if we don't really need them. - Lots of other little bug fixes that are all over the place" * 'for-4.13/block' of git://git.kernel.dk/linux-block: (217 commits) lightnvm: pblk: set line bitmap check under debug lightnvm: pblk: verify that cache read is still valid lightnvm: pblk: add initialization check lightnvm: pblk: remove target using async. I/Os lightnvm: pblk: use vmalloc for GC data buffer lightnvm: pblk: use right metadata buffer for recovery lightnvm: pblk: schedule if data is not ready lightnvm: pblk: remove unused return variable lightnvm: pblk: fix double-free on pblk init lightnvm: pblk: fix bad le64 assignations nvme: Makefile: remove dead build rule blk-mq: map all HWQ also in hyperthreaded system nvmet-rdma: register ib_client to not deadlock in device removal nvme_fc: fix error recovery on link down. nvmet_fc: fix crashes on bad opcodes nvme_fc: Fix crash when nvme controller connection fails. nvme_fc: replace ioabort msleep loop with completion nvme_fc: fix double calls to nvme_cleanup_cmd() nvme-fabrics: verify that a controller returns the correct NQN nvme: simplify nvme_dev_attrs_are_visible ...
| * | | nvme: Makefile: remove dead build ruleValentin Rothberg2017-06-291-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove dead build rule for drivers/nvme/host/scsi.c which has been removed by commit ("nvme: Remove SCSI translations"). Signed-off-by: Valentin Rothberg <vrothberg@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme_fc: fix error recovery on link down.James Smart2017-06-281-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, the fc transport invokes nvme_fc_error_recovery() on every io in which the transport detects an error. Which means: a) it's really noisy on large io loads that all get hit by a link down. b) we repeatively call nvme_stop_queues() even though queues are stopped upon the first error or as first steps of reset_work. Correct by: Errors are only meaningful if the controller is in the LIVE state. Thus, enact the reset_work only if LIVE. If called repeatively, state will have already transitioned. There's no need to stop the queues here. Let the first steps of reset_work do the queue stopping. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme_fc: Fix crash when nvme controller connection fails.James Smart2017-06-281-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a controller connection is attempted (say to a subsystem that does not exist), the first attempt errors out. If another connect is attempted, it crashes. Issue is the prior controller has yet execute it's final put, thus its still on lists. However, opts points on it have been cleared, thus causing the crash if they are referenced. Fix is to add the missing put after the nvme_uninit_ctrl() call on the attachment failure. Signed-off-by: Paul Ely <Paul.Ely@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme_fc: replace ioabort msleep loop with completionJames Smart2017-06-281-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Per the recommendation by Sagi on: http://lists.infradead.org/pipermail/linux-nvme/2017-April/009261.html Wait for io aborts to complete wait converted from msleep look to using a struct completion. Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme_fc: fix double calls to nvme_cleanup_cmd()James Smart2017-06-281-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current fc transport code, on io termination, is calling nvme_cleanup_cmd() followed by the transport dma unmap routine which also calls nvme_cleanup_cmd(). Which means two kfrees occur on the same address, raising havoc. This resulted in odd data errors, effectively corruption.. Fix by removing the extraneous double calls. Call now occurs only in teardown paths and as part of dma unmap routine. Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme-fabrics: verify that a controller returns the correct NQNChristoph Hellwig2017-06-281-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: simplify nvme_dev_attrs_are_visibleChristoph Hellwig2017-06-281-11/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: read the subsystem NQN from Identify ControllerChristoph Hellwig2017-06-286-17/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NVMe 1.2.1 or later requires controllers to provide a subsystem NQN in the Identify controller data structures. Use this NQN for the subsysnqn sysfs attribute by storing it in the nvme_ctrl structure after verifying it. For older controllers we generate a "fake" NQN per non-normative text in the NVMe 1.3 spec. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: remove a misleading comment on struct nvme_nsChristoph Hellwig2017-06-281-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While a NVMe Namespace is somewhat similar to a SCSI Logical Unit (and not a Logical Unit Number anyway) there are subtile differences. Remove the misleading comment. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grmberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: explicitly disable APST on quirked devicesKai-Heng Feng2017-06-282-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A user reports APST is enabled, even when the NVMe is quirked or with option "default_ps_max_latency_us=0". The current logic will not set APST if the device is quirked. But the NVMe in question will enable APST automatically. Separate the logic "apst is supported" and "to enable apst", so we can use the latter one to explicitly disable APST at initialiaztion. BugLink: https://bugs.launchpad.net/bugs/1699004 Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Reviewed-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: use a single NVME_AQ_DEPTH and relax it to 32Sagi Grimberg2017-06-284-14/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No need to differentiate fabrics from pci/loop, also lower it to 32 as we don't really need 256 inflight admin commands. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: add hostid token to fabric optionsJohannes Thumshirn2017-06-282-3/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently we have no way to define a stable host-id but always use the one which is randomly generated when we add the host or use the default host. Provide a "hostid=%s" for user-space to pass in a persistent host-id which overrides the randomly generated one. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * | | nvme: Remove SCSI translationsKeith Busch2017-06-284-2541/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SCSI-to-NVMe translations were added to assist storage applications utilizing SG_IO transitioning to NVMe. It was always recommended, however, to use native NVMe for device management as too much is lost in translation and the maintenance burden in keeping this kludgey layer around has been neglected such that much of the translations are completely broken. This patch removes SG_IO handling from NVMe to avoid any confusion regarding maintenance support for this interface. The config option for NVMe SCSI emulation has been disabled by default since 4.5. The driver has supported native nvme user commands since the beginning, and native tooling is publicly available for use or as reference for anyone writing their own tools, so there's no excuse for hanging onto a broken crutch. Signed-off-by: Keith Busch <keith.busch@intel.com> Acked-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Guan Junxiong <guanjunxiong@huawei.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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