- 05 5月, 2014 2 次提交
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由 Matthew Wilcox 提交于
Help people diagnose what is going wrong at initialisation time by printing out which command has gone wrong and what the device returned. Also fix the error message printed while waiting for reset. Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by: NKeith Busch <keith.busch@intel.com>
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由 Matthew Wilcox 提交于
Make the copyright dates accurate and remove the final paragraph that includes the address of the FSF. Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 11 4月, 2014 6 次提交
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由 Keith Busch 提交于
For commands returned with failed status, queue these for resubmission and continue retrying them until success or for a limited amount of time. The final timeout was arbitrarily chosen so requests can't be retried indefinitely. Since these are requeued on the nvmeq that submitted the command, the callbacks have to take an nvmeq instead of an nvme_dev as a parameter so that we can use the locked queue to append the iod to retry later. The nvme_iod conviently can be used to track how long we've been trying to successfully complete an iod request. The nvme_iod also provides the nvme prp dma mappings, so I had to move a few things around so we can keep those mappings. Signed-off-by: NKeith Busch <keith.busch@intel.com> [fixed checkpatch issue with long line] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Some programs require HDIO_GETGEO work, which requires we implement getgeo. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Dan McLeran 提交于
Done to ensure nvme_thread is not running when there are no devices to poll. Signed-off-by: NDan McLeran <daniel.mcleran@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Increase the default timeout to 30 seconds to match SCSI. Signed-off-by: NKeith Busch <keith.busch@intel.com> [use byte instead of ushort] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Registers with hot cpu notification to rebalance, and potentially allocate additional, io queues. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
The device's IO queues are associated with CPUs, so we can use a per-cpu variable to map the a qid to a cpu. This provides a convienient way to optimally assign queues to multiple cpus when the device supports fewer queues than the host has cpus. The previous implementation may have assigned these poorly in these situations. This patch addresses this by sharing queues among cpus that are "close" together and should have a lower lock contention penalty. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 24 3月, 2014 5 次提交
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由 Matthew Wilcox 提交于
Checkpatch has started warning against using DEFINE_PCI_DEVICE_TABLE, so replace it. Also update the copyright date and bump the module version number to 0.9. Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
This adds rcu protected access to a queue in the nvme IOCTL path to fix potential races between a surprise removal and queue usage in nvme_submit_sync_cmd. The fix holds the rcu_read_lock() here to prevent the nvme_queue from freeing while this path is executing so it can't sleep, and so this path will no longer wait for a available command id should they all be in use at the time a passthrough IOCTL request is received. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
This adds rcu protected access to nvme_queue to fix a race between a surprise removal freeing the queue and a thread with open reference on a NVMe block device using that queue. The queues do not need to be rcu protected during the initialization or shutdown parts, so I've added a helper function for raw deferencing to get around the sparse errors. There is still a hole in the IOCTL path for the same problem, which is fixed in a subsequent patch. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
If an NVMe device becomes ready but fails to create IO queues, the driver creates a character device handle so the device can be managed. The device reference count needs to be initialized before creating the character device. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Jingoo Han 提交于
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. drivers/block/nvme-core.c:2541:12: warning: 'nvme_suspend' defined but not used [-Wunused-function] drivers/block/nvme-core.c:2550:12: warning: 'nvme_resume' defined but not used [-Wunused-function] Signed-off-by: NJingoo Han <jg1.han@samsung.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 14 3月, 2014 1 次提交
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由 Alexander Gordeev 提交于
As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() or pci_enable_msi_exact() and pci_enable_msix_range() or pci_enable_msix_exact() interfaces. Signed-off-by: NAlexander Gordeev <agordeev@redhat.com> Cc: Keith Busch <keith.busch@intel.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: linux-nvme@lists.infradead.org Cc: linux-pci@vger.kernel.org Reviewed-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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- 07 3月, 2014 1 次提交
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由 Tejun Heo 提交于
PREPARE_[DELAYED_]WORK() are being phased out. They have few users and a nasty surprise in terms of reentrancy guarantee as workqueue considers work items to be different if they don't have the same work function. nvme_dev->reset_work is multiplexed with multiple work functions. Introduce nvme_reset_workfn() which invokes nvme_dev->reset_workfn and always use it as the work function and update the users to set the ->reset_workfn field instead of overriding the work function using PREPARE_WORK(). It would probably be best to route this with other related updates through the workqueue tree. Compile tested. Signed-off-by: NTejun Heo <tj@kernel.org> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: linux-nvme@lists.infradead.org
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- 03 2月, 2014 1 次提交
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由 Keith Busch 提交于
An nvme block device may have open references when the device is removed. New commands may still be sent on the removed device, so we need to ref count the opens, return errors for new commands, and not free the namespace and nvme_dev until all references are closed. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 30 1月, 2014 1 次提交
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由 Matthew Wilcox 提交于
We need to initialise the work_struct when we initialise the rest of the struct nvme_dev, otherwise we'll hit a lockdep warning when we remove the device. Use PREPARE_WORK to change the function pointer instead of INIT_WORK. Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 28 1月, 2014 8 次提交
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由 Matthew Wilcox 提交于
On larger systems with many drives, it may help debugging to know which queue is tied to which interrupt, just by looking at /proc/interrupts. Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
We need to shut down the device cleanly when the system is being shut down. This was in an earlier patch but was inadvertently lost during a rewrite. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Disable the admin queue if device fails during initialization so the queue's irq is freed. Signed-off-by: NKeith Busch <keith.busch@intel.com> [rewritten to use nvme_free_queues] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Matthew Wilcox 提交于
Some users need more than 64 partitions per device. Rather than simply increasing the number of partitions, switch to the dynamic partition allocation scheme. This means that minor numbers are not stable across boots, but since major numbers aren't either, I cannot see this being a significant problem. Tested-by: NMatias Bjørling <m@bjorling.me> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
This attempts to delete all IO queues at the same time asynchronously on shutdown. This is necessary for a present device that is not responding; a shutdown operation previously would take 2 minutes per queue-pair to timeout before moving on to the next queue, making a device removal appear to take a very long time or "hung" as reported by users. In the previous worst case, a removal may be stuck forever until a kill signal is given if there are more than 32 queue pairs since it would run out of admin command IDs after over an hour of timed out sync commands (admin queue depth is 64). This patch will wait for the admin command timeout for all commands to complete, so the worst case now for an unresponsive controller is 60 seconds, though that still seems like a long time. Since this adds another way to take queues offline, some duplicate code resulted so I moved these into more convienient functions. Signed-off-by: NKeith Busch <keith.busch@intel.com> [make functions static, correct line length and whitespace issues] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
This adds checks to see if the nvme pci device was removed. The check reads the status register for the value of -1, which it should never be unless the device is no longer present. If a user performs a surprise removal on an nvme device, the driver will be notified either by the pci driver remove callback if the platform's slot is capable of this event, or via reading the device BAR status register, which will indicate controller failure and trigger a reset. Either way, the device is not present so all outstanding commands would timeout. This will not send queue deletion commands to a drive that isn't present and fail after ioremap, significantly speeding up surprise removal; previously this took over 2 minutes per IO queue pair created, but this will complete removing the device within a few seconds. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Send nvme abort command to io requests that have timed out on an initialized device. If the command is not returned after another timeout, schedule the controller for reset. Signed-off-by: NKeith Busch <keith.busch@intel.com> [fix endianness issues] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Schedules a controller reset when it indicates it has a failed status. If the device does not become ready after a reset, the pci device will be scheduled for removal. Signed-off-by: NKeith Busch <keith.busch@intel.com> [fixed checkpatch issue] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 17 12月, 2013 4 次提交
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由 Keith Busch 提交于
Adds controller error handling on resume power management. If the device fails to initialize, the device is queued for a reset. If the reset fails, a thread is spawned to remove the pci device. If the device resumes as "busy", the device is responding to admin commands but will not create IO queues. In this case, we need to remove the gendisks and free the IO queues since they can't be used and may be holding bios in their lists. From testing, the dma pools require a pci device so this had to change the pci driver 'remove' to release the dma resources in line with that call instead of after all references to the device are released. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Matthew Wilcox 提交于
Helps with line-length issues Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Matthew Wilcox 提交于
During the initialisation path, the queue lock is taken without interrupt protection. It's perfectly safe to do so, because the interrupt handler can't run at this point, but it confuses lockdep. Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
For 32-bit versions of sg3-utils running on a 64-bit system. This is mostly a copy from the relevent portions of fs/compat_ioctl.c, with slight modifications for going through block_device_operations. Signed-off-by: NKeith Busch <keith.busch@intel.com> Reviewed-by: NVishal Verma <vishal.l.verma@linux.intel.com> [fixed up CONFIG_COMPAT=n build problems] Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 24 11月, 2013 3 次提交
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由 Kent Overstreet 提交于
The new bio_split() can split arbitrary bios - it's not restricted to single page bios, like the old bio_split() (previously renamed to bio_pair_split()). It also has different semantics - it doesn't allocate a struct bio_pair, leaving it up to the caller to handle completions. Then convert the existing bio_pair_split() users to the new bio_split() - and also nvme, which was open coding bio splitting. (We have to take that BUG_ON() out of bio_integrity_trim() because this bio_split() needs to use it, and there's no reason it has to be used on bios marked as cloned; BIO_CLONED doesn't seem to have clearly documented semantics anyways.) Signed-off-by: NKent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Keith Busch <keith.busch@intel.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Neil Brown <neilb@suse.de>
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由 Kent Overstreet 提交于
More prep work for immutable biovecs - with immutable bvecs drivers won't be able to use the biovec directly, they'll need to use helpers that take into account bio->bi_iter.bi_bvec_done. This updates callers for the new usage without changing the implementation yet. Signed-off-by: NKent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Paul Clements <Paul.Clements@steeleye.com> Cc: Jim Paris <jim@jtan.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@inktank.com> Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris <josh.h.morris@us.ibm.com> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Neil Brown <neilb@suse.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com> Cc: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Cc: support@lsi.com Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Guo Chao <yan@linux.vnet.ibm.com> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Keith Busch <keith.busch@intel.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: Quoc-Son Anh <quoc-sonx.anh@intel.com> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Jerome Marchand <jmarchan@redhat.com> Cc: Seth Jennings <sjenning@linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: "Darrick J. Wong" <darrick.wong@oracle.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jan Kara <jack@suse.cz> Cc: linux-m68k@lists.linux-m68k.org Cc: linuxppc-dev@lists.ozlabs.org Cc: drbd-user@lists.linbit.com Cc: nbd-general@lists.sourceforge.net Cc: cbe-oss-dev@lists.ozlabs.org Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Cc: linux-raid@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: DL-MPTFusionLinux@lsi.com Cc: linux-scsi@vger.kernel.org Cc: devel@driverdev.osuosl.org Cc: linux-fsdevel@vger.kernel.org Cc: cluster-devel@redhat.com Cc: linux-mm@kvack.org Acked-by: NGeoff Levand <geoff@infradead.org>
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由 Kent Overstreet 提交于
Immutable biovecs are going to require an explicit iterator. To implement immutable bvecs, a later patch is going to add a bi_bvec_done member to this struct; for now, this patch effectively just renames things. Signed-off-by: NKent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@inktank.com> Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris <josh.h.morris@us.ibm.com> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Neil Brown <neilb@suse.de> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: dm-devel@redhat.com Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: Benny Halevy <bhalevy@tonian.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Nicholas A. Bellinger" <nab@linux-iscsi.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Chris Mason <chris.mason@fusionio.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Jaegeuk Kim <jaegeuk.kim@samsung.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Dave Kleikamp <shaggy@kernel.org> Cc: Joern Engel <joern@logfs.org> Cc: Prasad Joshi <prasadjoshi.linux@gmail.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Ben Myers <bpm@sgi.com> Cc: xfs@oss.sgi.com Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Len Brown <len.brown@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Guo Chao <yan@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Cc: "Roger Pau Monné" <roger.pau@citrix.com> Cc: Jan Beulich <jbeulich@suse.com> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Cc: Ian Campbell <Ian.Campbell@citrix.com> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Jerome Marchand <jmarchand@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Peng Tao <tao.peng@emc.com> Cc: Andy Adamson <andros@netapp.com> Cc: fanchaoting <fanchaoting@cn.fujitsu.com> Cc: Jie Liu <jeff.liu@oracle.com> Cc: Sunil Mushran <sunil.mushran@gmail.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Namjae Jeon <namjae.jeon@samsung.com> Cc: Pankaj Kumar <pankaj.km@samsung.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Mel Gorman <mgorman@suse.de>6
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- 19 11月, 2013 2 次提交
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由 Michael Opdenacker 提交于
This patch proposes to remove the use of the IRQF_DISABLED flag It's a NOOP since 2.6.35 and it will be removed one day. Signed-off-by: NMichael Opdenacker <michael.opdenacker@free-electrons.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Haiyan Hu 提交于
Changes the type of dev->db_stride to unsigned and changes the value stored there to be 1 << the current value. Then there is less calculation to be done at completion time. Signed-off-by: NHaiyan Hu <huhaiyan@huawei.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 22 9月, 2013 1 次提交
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由 Russell King 提交于
Replace the following sequence: dma_set_mask(dev, mask); dma_set_coherent_mask(dev, mask); with a call to the new helper dma_set_mask_and_coherent(). Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 07 9月, 2013 1 次提交
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由 Keith Busch 提交于
A recent patch made it possible to bring up the character handle when the device is responsive but not accepting a set-features command. Another recent patch moved the initialization that requires we move where the checks for this condition occur. This patch merges these two ideas so it works much as before. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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- 04 9月, 2013 4 次提交
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由 Keith Busch 提交于
Decrement the number of queues required for doorbell remapping until the memory is successfully mapped for that size. Additional checks are done so that we don't call free_irq if it has already been freed. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
Used for going in and out of low power states. Resuming reuses the IO queues from the previous initialization, freeing any allocated queues that are no longer usable. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
The NVMe spec recommends using the shutdown normal sequence when safely taking the controller offline instead of hitting CC.EN on the next start-up to reset the controller. The spec recommends a minimum of 1 second for the shutdown complete. This patch waits 2 seconds to be on the safe side. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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由 Keith Busch 提交于
This combines the controller initialization into one function, removing IO queue setup from namespace discovery, and creates symetric functions for device removal. The controller start and shutdown functions can now be called from resume/suspend context as well as probe/remove. Signed-off-by: NKeith Busch <keith.busch@intel.com> Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
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