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2013-01-03Drivers: block: remove __dev* attributes.Greg Kroah-Hartman1-9/+8
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Mike Miller <mike.miller@hp.com> Cc: Chirag Kantharia <chirag.kantharia@hp.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Jim Paris <jim@jtan.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Keith Busch <keith.busch@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: NeilBrown <neilb@suse.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Tao Guo <Tao.Guo@emc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-01Merge tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds1-1/+1
Pull PCI changes from Bjorn Helgaas: "Host bridge hotplug - Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi) - Clear host bridge resource info to avoid issue when releasing (Yinghai Lu) - Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu) - Use standard list ops for acpi_pci_drivers (Jiang Liu) Device hotplug - Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang Liu) - Remove fakephp driver (Bjorn Helgaas) - Fix VGA ref count in hotplug remove path (Yinghai Lu) - Allow acpiphp to handle PCIe ports without native hotplug (Jiang Liu) - Implement resume regardless of pciehp_force param (Oliver Neukum) - Make pci_fixup_irqs() work after init (Thierry Reding) Miscellaneous - Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang) - Factor out PCI Express Capability accessors (Jiang Liu) - Add pcibios_window_alignment() so powerpc EEH can use generic resource assignment (Gavin Shan) - Make pci_error_handlers const (Stephen Hemminger) - Cleanup drivers/pci/remove.c (Bjorn Helgaas) - Improve Vendor-Specific Extended Capability support (Bjorn Helgaas) - Use standard list ops for bus->devices (Bjorn Helgaas) - Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang) - Reassign invalid bus number ranges (Intel DP43BF workaround) (Yinghai Lu)" * tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (102 commits) PCI: acpiphp: Handle PCIe ports without native hotplug capability PCI/ACPI: Use acpi_driver_data() rather than searching acpi_pci_roots PCI/ACPI: Protect acpi_pci_roots list with mutex PCI/ACPI: Use acpi_pci_root info rather than looking it up again PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interface PCI/ACPI: Protect acpi_pci_drivers list with mutex PCI/ACPI: Notify acpi_pci_drivers when hot-plugging PCI root bridges PCI/ACPI: Use normal list for struct acpi_pci_driver PCI/ACPI: Use DEVICE_ACPI_HANDLE rather than searching acpi_pci_roots PCI: Fix default vga ref_count ia64/PCI: Clear host bridge aperture struct resource x86/PCI: Clear host bridge aperture struct resource PCI: Stop all children first, before removing all children Revert "PCI: Use hotplug-safe pci_get_domain_bus_and_slot()" PCI: Provide a default pcibios_update_irq() PCI: Discard __init annotations for pci_fixup_irqs() and related functions PCI: Use correct type when freeing bus resource list PCI: Check P2P bridge for invalid secondary/subordinate range PCI: Convert "new_id"/"remove_id" into generic pci_bus driver attributes xen-pcifront: Use hotplug-safe pci_get_domain_bus_and_slot() ...
2012-09-29Merge git://git.infradead.org/users/willy/linux-nvmeLinus Torvalds1-50/+103
Pull NVMe driver fixes from Matthew Wilcox: "Now that actual hardware has been released (don't have any yet myself), people are starting to want some of these fixes merged." Willy doesn't have hardware? Guys... * git://git.infradead.org/users/willy/linux-nvme: NVMe: Cancel outstanding IOs on queue deletion NVMe: Free admin queue memory on initialisation failure NVMe: Use ida for nvme device instance NVMe: Fix whitespace damage in nvme_init NVMe: handle allocation failure in nvme_map_user_pages() NVMe: Fix uninitialized iod compiler warning NVMe: Do not set IO queue depth beyond device max NVMe: Set block queue max sectors NVMe: use namespace id for nvme_get_features NVMe: replace nvme_ns with nvme_dev for user admin NVMe: Fix nvme module init when nvme_major is set NVMe: Set request queue logical block size
2012-09-07make drivers with pci error handlers constStephen Hemminger1-1/+1
Covers the rest of the uses of pci error handler. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-08-07NVMe: Cancel outstanding IOs on queue deletionMatthew Wilcox1-23/+32
If the device is hot-unplugged while there are active commands, we should time out the I/Os so that upper layers don't just see the I/Os disappear. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-08-03NVMe: Free admin queue memory on initialisation failureMatthew Wilcox1-9/+19
If the adapter fails initialisation, the memory allocated for the admin queue may not be freed. Split the memory freeing part of nvme_free_queue() into nvme_free_queue_mem() and call it in the case of initialisation failure. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Reported-by: Vishal Verma <vishal.l.verma@intel.com>
2012-07-31NVMe: Use ida for nvme device instanceQuoc-Son Anh1-5/+26
Signed-off-by: Quoc-Son Anh <quoc-sonx.anh@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-31NVMe: Fix whitespace damage in nvme_initMatthew Wilcox1-2/+2
Commit 5c42ea1643 used spaces instead of tabs. Also remove the unnecessary initialisation of the 'result' variable. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-31NVMe: handle allocation failure in nvme_map_user_pages()Dan Carpenter1-0/+2
We should return here and avoid a NULL dereference. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-27NVMe: Fix uninitialized iod compiler warningKeith Busch1-1/+1
Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-27NVMe: Do not set IO queue depth beyond device maxKeith Busch1-4/+6
Set the depth for IO queues to the device's maximum supported queue entries if the requested depth exceeds the device's capabilities. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-26NVMe: Set block queue max sectorsKeith Busch1-0/+7
Set the max hw sectors in a namespace's request queue if the nvme device has a max data transfer size. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-26NVMe: use namespace id for nvme_get_featuresKeith Busch1-2/+2
The specification does not provide a use for command dword11 in the NVMe Get Features command, but does use the NSID for some features. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-26NVMe: replace nvme_ns with nvme_dev for user adminKeith Busch1-3/+2
The function nvme_user_admin_command does not require a namespace to proceed. Replace with the nvme_dev structure so that it can be called from contexts that do not have a namespace. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-26NVMe: Fix nvme module init when nvme_major is setKeith Busch1-2/+4
register_blkdev returns 0 when given a valid major number. Reported-by:Ross Zwisler <ross.zwisler@intel.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-07-25NVMe: Set request queue logical block sizeKeith Busch1-0/+1
Sets the request queue logical block size with the block size of the namespace. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-03-20Merge branch 'for-linus' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "It's indeed trivial -- mostly documentation updates and a bunch of typo fixes from Masanari. There are also several linux/version.h include removals from Jesper." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (101 commits) kcore: fix spelling in read_kcore() comment constify struct pci_dev * in obvious cases Revert "char: Fix typo in viotape.c" init: fix wording error in mm_init comment usb: gadget: Kconfig: fix typo for 'different' Revert "power, max8998: Include linux/module.h just once in drivers/power/max8998_charger.c" writeback: fix fn name in writeback_inodes_sb_nr_if_idle() comment header writeback: fix typo in the writeback_control comment Documentation: Fix multiple typo in Documentation tpm_tis: fix tis_lock with respect to RCU Revert "media: Fix typo in mixer_drv.c and hdmi_drv.c" Doc: Update numastat.txt qla4xxx: Add missing spaces to error messages compiler.h: Fix typo security: struct security_operations kerneldoc fix Documentation: broken URL in libata.tmpl Documentation: broken URL in filesystems.tmpl mtd: simplify return logic in do_map_probe() mm: fix comment typo of truncate_inode_pages_range power: bq27x00: Fix typos in comment ...
2012-02-21asm-generic: architecture independent readq/writeq for 32bit environmentHitoshi Mitake1-0/+2
This provides unified readq()/writeq() helper functions for 32-bit drivers. For some cases, readq/writeq without atomicity is harmful, and order of io access has to be specified explicitly. So in this patch, new two header files which contain non-atomic readq/writeq are added. - <asm-generic/io-64-nonatomic-lo-hi.h> provides non-atomic readq/ writeq with the order of lower address -> higher address - <asm-generic/io-64-nonatomic-hi-lo.h> provides non-atomic readq/ writeq with reversed order This allows us to remove some readq()s that were added drivers when the default non-atomic ones were removed in commit dbee8a0affd5 ("x86: remove 32-bit versions of readq()/writeq()") The drivers which need readq/writeq but can do with the non-atomic ones must add the line: #include <asm-generic/io-64-nonatomic-lo-hi.h> /* or hi-lo.h */ But this will be nop in 64-bit environments, and no other #ifdefs are required. So I believe that this patch can solve the problem of 1. driver-specific readq/writeq 2. atomicity and order of io access This patch is tested with building allyesconfig and allmodconfig as ARCH=x86 and ARCH=i386 on top of tip/master. Cc: Kashyap Desai <Kashyap.Desai@lsi.com> Cc: Len Brown <lenb@kernel.org> Cc: Ravi Anand <ravi.anand@qlogic.com> Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Cc: Matthew Garrett <mjg@redhat.com> Cc: Jason Uhlenkott <juhlenko@akamai.com> Cc: James Bottomley <James.Bottomley@parallels.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Roland Dreier <roland@purestorage.com> Cc: James Bottomley <jbottomley@parallels.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-02-21NVM Express: Remove unneeded include of linux/version.h from nvme.cJesper Juhl1-1/+0
There's no need for drivers/block/nvme.c to include linux/version.h, so remove the include. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-01-18nvme: fix merge error due to change of 'make_request_fn' fn typeLinus Torvalds1-7/+1
The type of 'make_request_fn' changed in 5a7bbad27a4 ("block: remove support for bio remapping from ->make_request"), but the merge of the nvme driver didn't take that into account, and as a result the driver would compile with a warning: drivers/block/nvme.c: In function 'nvme_alloc_ns': drivers/block/nvme.c:1336:2: warning: passing argument 2 of 'blk_queue_make_request' from incompatible pointer type [enabled by default] include/linux/blkdev.h:830:13: note: expected 'void (*)(struct request_queue *, struct bio *)' but argument is of type 'int (*)(struct request_queue *, struct bio *)' It's benign, but the warning is annoying. Reported-by: Stephen Rothwell <sfr@canb.auug.org> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-11NVMe: Set number of queues correctlyMatthew Wilcox1-3/+17
The number of submission & completion queues should be set by calling Set Features, not Get Features. Reported-by: Kwok Kong <Kwok.Kong@idt.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Version 0.8Matthew Wilcox1-1/+1
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Set queue flags correctlyMatthew Wilcox1-2/+4
QUEUE_FLAG_* are flags (other than QUEUE_FLAG_DEFAULT), so they cannot be ORed together. Set the queue flags using queue_flag_set_unlocked(). Reported-by: Donald Wood <donald.e.wood@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Simplify nvme_unmap_user_pagesMatthew Wilcox1-10/+9
By using the iod->nents field (the same way other I/O paths do), we can avoid recalculating the number of sg entries at unmap time, and make nvme_unmap_user_pages() easier to call. Also, use the 'write' parameter instead of assuming DMA_FROM_DEVICE. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Mark the end of the sg listMatthew Wilcox1-0/+1
For user I/O and admin commands, we were forgetting to mark the end of the SG list. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Fix DMA mapping for admin commandsMatthew Wilcox1-2/+4
We were always mapping as DMA_FROM_DEVICE then unmapping with DMA_TO_DEVICE which was clearly not correct. Follow the same pattern as nvme_submit_io() and key off the bottom bit of the opcode to determine whether this is a read or a write. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Rename IO_TIMEOUT to NVME_IO_TIMEOUTMatthew Wilcox1-4/+4
IO_TIMEOUT is a little too generic and might be used by other parts of the kernel in the future. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Merge the nvme_bio and nvme_prp data structuresMatthew Wilcox1-115/+124
The new merged data structure is called nvme_iod. This improves performance for mid-sized I/Os (in the 16k range) since we save a memory allocation. It is also a slightly simpler interface to use. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Change nvme_completion_fn to take a devMatthew Wilcox1-18/+25
The queue is only needed for some rare occasions, and it's more consistent to pass the device around. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Change get_nvmeq to take a dev instead of a namespaceMatthew Wilcox1-4/+4
Upcoming patches require calling get_nvmeq when we don't have a namespace. Some callers already have the device in a local variable anyway. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2012-01-10NVMe: Simplify completion handlingMatthew Wilcox1-86/+81
Instead of encoding the handler type in the bottom two bits of the per-completion context pointer, store the handler function as well as the context pointer. This gives us more flexibility and the code is clearer. It comes at the cost of an extra 8k of memory per queue, but this feels like a reasonable price to pay. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Implement doorbell stride capabilityMatthew Wilcox1-3/+14
The doorbell stride allows devices to spread out their doorbells instead of packing them tightly. This feature was added as part of ECN 003. This patch also enables support for more than 512 queues :-) Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Version 0.7Matthew Wilcox1-1/+1
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Don't probe namespace 0Matthew Wilcox1-1/+1
ECN 001 documented that namespace 0 is not valid. Sending an Identify with CNS of 0 and Namespace of 0 is an undefined command. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04Fix calculation of number of pages in a PRP ListNisheeth Bhat1-7/+7
The existing calculation underestimated the number of pages required as it did not take into account the pointer at the end of each page. The replacement calculation may overestimate the number of pages required if the last page in the PRP List is entirely full. By using ->npages as a counter as we fill in the pages, we ensure that we don't try to free a page that was never allocated. Signed-off-by: Nisheeth Bhat <nisheeth.bhat@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Create nvme_identify and nvme_get_features functionsMatthew Wilcox1-33/+43
Instead of open-coding calls to nvme_submit_admin_cmd, these small wrappers are simpler to use (the patch removes 14 lines from nvme_dev_add() for example). Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Fix memory leak in nvme_dev_add()Matthew Wilcox1-2/+2
The driver was allocating 8k of memory, then freeing 4k of it. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Fix calls to dma_unmap_sgNisheeth Bhat1-6/+4
dma_unmap_sg() must be called with the same 'nents' passed to dma_map_sg(), not the number returned from dma_map_sg(). Signed-off-by: Nisheeth Bhat <nisheeth.bhat@intel.com> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Correct sg list setup in nvme_map_user_pagesMatthew Wilcox1-5/+5
Our SG list was constructed to always fill the entire first page, even if that was more than the length of the I/O. This is probably harmless, but some IOMMUs might do something bad. Correcting the first call to sg_set_page() made it look a lot closer to the sg_set_page() in the loop, so fold the first call to sg_set_page() into the loop. Reported-by: Nisheeth Bhat <nisheeth.bhat@intel.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2011-11-04Fix bug in NVME_IOCTL_SUBMIT_IOMatthew Wilcox1-0/+1
Missing 'break' in the switch statement meant that we'd fall through to the 'return -EINVAL' case.
2011-11-04NVMe: Rework ioctlsMatthew Wilcox1-88/+40
Remove the special-purpose IDENTIFY, GET_RANGE_TYPE, DOWNLOAD_FIRMWARE and ACTIVATE_FIRMWARE commands. Replace them with a generic ADMIN_CMD ioctl that can submit any admin command. Add a new ID ioctl that returns the namespace ID of the queried device. It corresponds to the SCSI Idlun ioctl. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Add the nvme thread to the wait queue before waking it upMatthew Wilcox1-0/+2
If the I/O was not completed by a single NVMe command, we add the bio to the congestion list and wake up the kthread to resubmit it. But the kthread calls remove_wait_queue() unconditionally, which will oops if it's not on the wait queue. So add the kthread to the wait queue before waking it up. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Return real error from nvme_create_queueMatthew Wilcox1-4/+4
nvme_setup_io_queues() was assuming that a NULL return from nvme_create_queue() was an out-of-memory error. That's not necessarily true; the adapter might return -EIO, for example. Change the calling convention to return an ERR_PTR on failure instead of NULL. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Version 0.6Matthew Wilcox1-1/+1
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Add a few calling convention notesMatthew Wilcox1-1/+10
For the benefit of reviewers, add comments to a few functions describing their calling context Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Handle failures from memory allocations in nvme_setup_prpsMatthew Wilcox1-15/+41
If any of the memory allocations in nvme_setup_prps fail, handle it by modifying the passed-in data length to reflect the number of bytes we are actually able to send. Also allow the caller to specify the GFP flags they need; for user-initiated commands, we can use GFP_KERNEL allocations. The various callers are updated to handle this possibility; the main I/O path is already prepared for this possibility (as it may happen due to nvme_map_bio being unable to map all the segments of the I/O). The other callers return -ENOMEM instead of doing partial I/Os. Reported-by: Andi Kleen <andi@firstfloor.org> Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Use an IDA to allocate minor numbersMatthew Wilcox1-4/+34
The current approach of using the namespace ID as the minor number doesn't work when there are multiple adapters in the machine. Rather than statically partitioning the number of namespaces between adapters, dynamically allocate minor numbers to namespaces as they are detected. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Add include of delay.h for msleepMatthew Wilcox1-0/+1
Previously it was being implicitly included through some other header file Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Add support for timing out I/OsMatthew Wilcox1-6/+31
In the kthread, walk the list of outstanding I/Os and check they've not hit the timeout. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-11-04NVMe: Rename cancel_cmdid_data to cancel_cmdidMatthew Wilcox1-2/+5
The trailing '_data' on the end was annoying and inconsistent. Also, make it actually return the data since this is needed for timing out commands. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
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