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2017-06-26scsi: cxlflash: Introduce host ioctl supportMatthew R. Ochs1-1/+1
As staging for supporting various host management functions, add a host ioctl infrastructure to filter ioctl commands and perform operations that are common for all host ioctls. Also update the cxlflash documentation to create a new section for documenting host ioctls. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-05-10Merge tag 'armsoc-tee' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull TEE driver infrastructure and OP-TEE drivers from Arnd Bergmann: "This introduces a generic TEE framework in the kernel, to handle trusted environemtns (security coprocessor or software implementations such as OP-TEE/TrustZone). I'm sending it separately from the other arm-soc driver changes to give it a little more visibility, once the subsystem is merged, we will likely keep this in the arm₋soc drivers branch or have the maintainers submit pull requests directly, depending on the patch volume. I have reviewed earlier versions in the past, and have reviewed the latest version in person during Linaro Connect BUD17. Here is my overall assessment of the subsystem: - There is clearly demand for this, both for the generic infrastructure and the specific OP-TEE implementation. - The code has gone through a large number of reviews, and the review comments have all been addressed, but the reviews were not coming up with serious issues any more and nobody volunteered to vouch for the quality. - The user space ioctl interface is sufficient to work with the OP-TEE driver, and it should in principle work with other TEE implementations that follow the GlobalPlatform[1] standards, but it might need to be extended in minor ways depending on specific requirements of future TEE implementations - The main downside of the API to me is how the user space is tied to the TEE implementation in hardware or firmware, but uses a generic way to communicate with it. This seems to be an inherent problem with what it is trying to do, and I could not come up with any better solution than what is implemented here. For a detailed history of the patch series, see https://lkml.org/lkml/2017/3/10/1277" * tag 'armsoc-tee' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm64: dt: hikey: Add optee node Documentation: tee subsystem and op-tee driver tee: add OP-TEE driver tee: generic TEE subsystem dt/bindings: add bindings for optee
2017-05-08Merge tag 'pci-v4.12-changes' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - add framework for supporting PCIe devices in Endpoint mode (Kishon Vijay Abraham I) - use non-postable PCI config space mappings when possible (Lorenzo Pieralisi) - clean up and unify mmap of PCI BARs (David Woodhouse) - export and unify Function Level Reset support (Christoph Hellwig) - avoid FLR for Intel 82579 NICs (Sasha Neftin) - add pci_request_irq() and pci_free_irq() helpers (Christoph Hellwig) - short-circuit config access failures for disconnected devices (Keith Busch) - remove D3 sleep delay when possible (Adrian Hunter) - freeze PME scan before suspending devices (Lukas Wunner) - stop disabling MSI/MSI-X in pci_device_shutdown() (Prarit Bhargava) - disable boot interrupt quirk for ASUS M2N-LR (Stefan Assmann) - add arch-specific alignment control to improve device passthrough by avoiding multiple BARs in a page (Yongji Xie) - add sysfs sriov_drivers_autoprobe to control VF driver binding (Bodong Wang) - allow slots below PCI-to-PCIe "reverse bridges" (Bjorn Helgaas) - fix crashes when unbinding host controllers that don't support removal (Brian Norris) - add driver for MicroSemi Switchtec management interface (Logan Gunthorpe) - add driver for Faraday Technology FTPCI100 host bridge (Linus Walleij) - add i.MX7D support (Andrey Smirnov) - use generic MSI support for Aardvark (Thomas Petazzoni) - make Rockchip driver modular (Brian Norris) - advertise 128-byte Read Completion Boundary support for Rockchip (Shawn Lin) - advertise PCI_EXP_LNKSTA_SLC for Rockchip root port (Shawn Lin) - convert atomic_t to refcount_t in HV driver (Elena Reshetova) - add CPU IRQ affinity in HV driver (K. Y. Srinivasan) - fix PCI bus removal in HV driver (Long Li) - add support for ThunderX2 DMA alias topology (Jayachandran C) - add ThunderX pass2.x 2nd node MCFG quirk (Tomasz Nowicki) - add ITE 8893 bridge DMA alias quirk (Jarod Wilson) - restrict Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices (Manish Jaggi) * tag 'pci-v4.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (146 commits) PCI: Don't allow unbinding host controllers that aren't prepared ARM: DRA7: clockdomain: Change the CLKTRCTRL of CM_PCIE_CLKSTCTRL to SW_WKUP MAINTAINERS: Add PCI Endpoint maintainer Documentation: PCI: Add userguide for PCI endpoint test function tools: PCI: Add sample test script to invoke pcitest tools: PCI: Add a userspace tool to test PCI endpoint Documentation: misc-devices: Add Documentation for pci-endpoint-test driver misc: Add host side PCI driver for PCI test function device PCI: Add device IDs for DRA74x and DRA72x dt-bindings: PCI: dra7xx: Add DT bindings to enable unaligned access PCI: dwc: dra7xx: Workaround for errata id i870 dt-bindings: PCI: dra7xx: Add DT bindings for PCI dra7xx EP mode PCI: dwc: dra7xx: Add EP mode support PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently dt-bindings: PCI: Add DT bindings for PCI designware EP mode PCI: dwc: designware: Add EP mode support Documentation: PCI: Add binding documentation for pci-test endpoint function ixgbe: Use pcie_flr() instead of duplicating it IB/hfi1: Use pcie_flr() instead of duplicating it PCI: imx6: Fix spelling mistake: "contol" -> "control" ...
2017-04-27docs: Fix a spelling error in ioctl-number.txtStan Drozd1-1/+1
This commit fixes a misspelled header name in the ioctl numbers list Signed-off-by: Stan Drozd <drozdziak1@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-04-12switchtec: Add IOCTLs to the Switchtec driverLogan Gunthorpe1-0/+1
Add a couple of special IOCTLs to: * Inform userspace of firmware partition locations * Pass event counts and allow userspace to wait on events * Translate PFF numbers used by the switch to port numbers [Dan Carpenter <dan.carpenter@oracle.com>: fix off-by-one in ioctl_event_ctl()] Tested-by: Krishna Dhulipala <krishnad@fb.com> Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Stephen Bates <stephen.bates@microsemi.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Wei Zhang <wzhang@fb.com> Reviewed-by: Jens Axboe <axboe@fb.com>
2017-03-09tee: generic TEE subsystemJens Wiklander1-0/+1
Initial patch for generic TEE subsystem. This subsystem provides: * Registration/un-registration of TEE drivers. * Shared memory between normal world and secure world. * Ioctl interface for interaction with user space. * Sysfs implementation_id of TEE driver A TEE (Trusted Execution Environment) driver is a driver that interfaces with a trusted OS running in some secure environment, for example, TrustZone on ARM cpus, or a separate secure co-processor etc. The TEE subsystem can serve a TEE driver for a Global Platform compliant TEE, but it's not limited to only Global Platform TEEs. This patch builds on other similar implementations trying to solve the same problem: * "optee_linuxdriver" by among others Jean-michel DELORME<jean-michel.delorme@st.com> and Emmanuel MICHEL <emmanuel.michel@st.com> * "Generic TrustZone Driver" by Javier González <javier@javigon.com> Acked-by: Andreas Dannenberg <dannenberg@ti.com> Tested-by: Jerome Forissier <jerome.forissier@linaro.org> (HiKey) Tested-by: Volodymyr Babchuk <vlad.babchuk@gmail.com> (RCAR H3) Tested-by: Scott Branden <scott.branden@broadcom.com> Reviewed-by: Javier González <javier@javigon.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
2017-02-23Merge tag 'rpmsg-v4.11' of git://github.com/andersson/remoteprocLinus Torvalds1-0/+1
Pull rpmsg updates from Bjorn Andersson: "This introduces an interface for user space to directly communicate on rpmsg endpoints without the implementation of specific kernel drivers, which is useful for e.g. debug channels: * tag 'rpmsg-v4.11' of git://github.com/andersson/remoteproc: rpmsg: rpmsg_create_ept() returns NULL on error rpmsg: qcom: smd: Return positively when not enabled rpmsg: unlock on error in rpmsg_eptdev_read() rpmsg: char: add CONFIG_NET dependency rpmsg: smd: Register rpmsg user space interface for edges rpmsg: Driver for user space endpoint interface rpmsg: qcom_smd: Implement endpoint "poll" rpmsg: Introduce "poll" to endpoint ops rpmsg: qcom_smd: Add support for "label" property
2017-01-26Doc: Fix double words in DocumentationMasanari Iida1-1/+1
This patch fix some double words found in Documentation. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-01-18rpmsg: Driver for user space endpoint interfaceBjorn Andersson1-0/+1
This driver allows rpmsg instances to expose access to rpmsg endpoints to user space processes. It provides a control interface, allowing userspace to export endpoints and an endpoint interface for each exposed endpoint. The implementation is based on prior art by Texas Instrument, Google, PetaLogix and was derived from a FreeRTOS performance statistics driver written by Michal Simek. The control interface provides a "create endpoint" ioctl, which is fed a name, source and destination address. The three values are used to create the endpoint, in a backend-specific way, and a rpmsg endpoint device is created - with the three parameters are available in sysfs for udev usage. E.g. to create an endpoint device for one of the Qualcomm SMD channel related to DIAG one would issue: struct rpmsg_endpoint_info info = { "DIAG_CNTL", 0, 0 }; int fd = open("/dev/rpmsg_ctrl0", O_RDWR); ioctl(fd, RPMSG_CREATE_EPT_IOCTL, &info); Each created endpoint device shows up as an individual character device in /dev, allowing permission to be controlled on a per-endpoint basis. The rpmsg endpoint will be created and destroyed following the opening and closing of the endpoint device, allowing rpmsg backends to open and close the physical channel, if supported by the wire protocol. Cc: Marek Novak <marek.novak@nxp.com> Cc: Matteo Sartori <matteo.sartori@t3lab.it> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-06doc: ioctl: Add some clarifications to botching-up-ioctlsLaura Abbott1-5/+8
- The guide currently says to pad the structure to a multiple of 64-bits. This is not necessary in cases where the structure contains no 64-bit types. Clarify this concept to avoid unnecessary padding. - When using __u64 to hold user pointers, blindly trying to do a cast to a void __user * may generate a warning on 32-bit systems about a cast from an integer to a pointer of different size. There is a macro to deal with this which hides an ugly double cast. Add a reference to this macro. Signed-off-by: Laura Abbott <labbott@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2016-08-02nilfs2: move ioctl interface and disk layout to uapi separatelyRyusuke Konishi1-1/+1
The header file "include/linux/nilfs2_fs.h" is composed of parts for ioctl and disk format, and both are intended to be shared with user space programs. This moves them to the uapi directory "include/uapi/linux" splitting the file to "nilfs2_api.h" and "nilfs2_ondisk.h". The following minor changes are accompanied by this migration: - nilfs_direct_node struct in nilfs2/direct.h is converged to nilfs2_ondisk.h because it's an on-disk structure. - inline functions nilfs_rec_len_from_disk() and nilfs_rec_len_to_disk() are moved to nilfs2/dir.c. Link: http://lkml.kernel.org/r/1465825507-3407-4-git-send-email-konishi.ryusuke@lab.ntt.co.jp Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-29Merge branch 'next' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Highlights: - TPM core and driver updates/fixes - IPv6 security labeling (CALIPSO) - Lots of Apparmor fixes - Seccomp: remove 2-phase API, close hole where ptrace can change syscall #" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits) apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family) tpm: Factor out common startup code tpm: use devm_add_action_or_reset tpm2_i2c_nuvoton: add irq validity check tpm: read burstcount from TPM_STS in one 32-bit transaction tpm: fix byte-order for the value read by tpm2_get_tpm_pt tpm_tis_core: convert max timeouts from msec to jiffies apparmor: fix arg_size computation for when setprocattr is null terminated apparmor: fix oops, validate buffer size in apparmor_setprocattr() apparmor: do not expose kernel stack apparmor: fix module parameters can be changed after policy is locked apparmor: fix oops in profile_unpack() when policy_db is not present apparmor: don't check for vmalloc_addr if kvzalloc() failed apparmor: add missing id bounds check on dfa verification apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task apparmor: use list_next_entry instead of list_entry_next apparmor: fix refcount race when finding a child profile apparmor: fix ref count leak when profile sha1 hash is read apparmor: check that xindex is in trans_table bounds ...
2016-07-12cdrom: support read sub-channel command in LBA formatvchannaiah1-1/+2
userspace application can send READ_SUB_CHANNEL command with time bit enabled and disabled. The time bit allows selection of address reporting format. If the time bit is disabled the response is in logical block address(CDROM_LBA) format, represented as a 32-bit integer with ms-byte first. If the time bit is enabled the response is in time format i.e., minutes, second, frame (CDROM_MSF) format. Signed-off-by: vchannaiah <vanitha.channaiah@in.bosch.com> Signed-off-by: Mahendran Kuppusamy <mahendran.kuppusamy@in.bosch.com> [veeraiyan.chidambaram@in.bosch.com: updated Documentation/ioctl/cdrom.txt] Signed-off-by: Veeraiyan Chidambaram <veeraiyan.chidambaram@in.bosch.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-06-25tpm: Add documentation for the tpm_vtpm_proxy device driverStefan Berger1-0/+1
Add documentation for the tpm_vtpm device driver that implements support for providing TPM functionality to Linux containers. Parts of this documentation were recycled from the Xen vTPM device driver documentation. Update the documentation for the ioctl numbers. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> CC: linux-kernel@vger.kernel.org CC: linux-doc@vger.kernel.org CC: linux-api@vger.kernel.org Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
2016-03-10gpio: uapi: use 0xB4 as ioctl() majorLinus Walleij1-0/+1
The previous 'o' is in conflict and not very orderly assigned. We want to select an ioctl() major that does not conflict with the existining ones. Add the new reserved major (0xB4) to Documentation/ioctl/ioctl-number.txt Fixes: 3c702e9987e2 ("gpio: add a userspace chardev ABI for GPIOs") Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-11-20Doc: ioctl: Fix typos in Documentation/ioctlMasanari Iida1-3/+3
This patch fix some spelling typos in Documentation/ioctl. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2015-11-04Merge tag 'char-misc-4.4-rc1' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver update for 4.4-rc1. Lots of different driver and subsystem updates, hwtracing being the largest with the addition of some new platforms that are now supported. Full details in the shortlog. All of these have been in linux-next for a long time with no reported issues" * tag 'char-misc-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (181 commits) fpga: socfpga: Fix check of return value of devm_request_irq lkdtm: fix ACCESS_USERSPACE test mcb: Destroy IDA on module unload mcb: Do not return zero on error path in mcb_pci_probe() mei: bus: set the device name before running fixup mei: bus: use correct lock ordering mei: Fix debugfs filename in error output char: ipmi: ipmi_ssif: Replace timeval with timespec64 fpga: zynq-fpga: Fix issue with drvdata being overwritten. fpga manager: remove unnecessary null pointer checks fpga manager: ensure lifetime with of_fpga_mgr_get fpga: zynq-fpga: Change fw format to handle bin instead of bit. fpga: zynq-fpga: Fix unbalanced clock handling misc: sram: partition base address belongs to __iomem space coresight: etm3x: adding documentation for sysFS's cpu interface vme: 8-bit status/id takes 256 values, not 255 fpga manager: Adding FPGA Manager support for Xilinx Zynq 7000 ARM: zynq: dt: Updated devicetree for Zynq 7000 platform. ARM: dt: fpga: Added binding docs for Xilinx Zynq FPGA manager. ver_linux: proc/modules, limit text processing to 'sed' ...
2015-10-29lightnvm: Support for Open-Channel SSDsMatias Bjørling1-0/+1
Open-channel SSDs are devices that share responsibilities with the host in order to implement and maintain features that typical SSDs keep strictly in firmware. These include (i) the Flash Translation Layer (FTL), (ii) bad block management, and (iii) hardware units such as the flash controller, the interface controller, and large amounts of flash chips. In this way, Open-channels SSDs exposes direct access to their physical flash storage, while keeping a subset of the internal features of SSDs. LightNVM is a specification that gives support to Open-channel SSDs LightNVM allows the host to manage data placement, garbage collection, and parallelism. Device specific responsibilities such as bad block management, FTL extensions to support atomic IOs, or metadata persistence are still handled by the device. The implementation of LightNVM consists of two parts: core and (multiple) targets. The core implements functionality shared across targets. This is initialization, teardown and statistics. The targets implement the interface that exposes physical flash to user-space applications. Examples of such targets include key-value store, object-store, as well as traditional block devices, which can be application-specific. Contributions in this patch from: Javier Gonzalez <jg@lightnvm.io> Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Jesper Madsen <jmad@itu.dk> Signed-off-by: Matias Bjørling <m@bjorling.me> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-10-04stm class: Introduce an abstraction for System Trace Module devicesAlexander Shishkin1-0/+3
A System Trace Module (STM) is a device exporting data in System Trace Protocol (STP) format as defined by MIPI STP standards. Examples of such devices are Intel(R) Trace Hub and Coresight STM. This abstraction provides a unified interface for software trace sources to send their data over an STM device to a debug host. In order to do that, such a trace source needs to be assigned a pair of master/channel identifiers that all the data from this source will be tagged with. The STP decoder on the debug host side will use these master/channel tags to distinguish different trace streams from one another inside one STP stream. This abstraction provides a configfs-based policy management mechanism for dynamic allocation of these master/channel pairs based on trace source-supplied string identifier. It has the flexibility of being defined at runtime and at the same time (provided that the policy definition is aligned with the decoding end) consistency. For userspace trace sources, this abstraction provides write()-based and mmap()-based (if the underlying stm device allows this) output mechanism. For kernel-side trace sources, we provide "stm_source" device class that can be connected to an stm device at run time. Cc: linux-api@vger.kernel.org Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-09-08Merge tag 'platform-drivers-x86-v4.3-1' of ↵Linus Torvalds1-1/+1
git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 Pull x86 platform driver updates from Darren Hart: "Significant work on toshiba_acpi, including new hardware support, refactoring, and cleanups. Extend device support for asus, ideapad, and acer systems. New surface pro 3 buttons driver. Misc minor cleanups for thinkpad and hp-wireless. acer-wmi: - No rfkill on HP Omen 15 wifi thinkpad_acpi: - Remove side effects from vdbg_printk -> no_printk macro surface pro 3: - Add support driver for Surface Pro 3 buttons hp-wireless: - remove unneeded goto/label in hpwl_init ideapad-laptop: - add alternative representation for Yoga 2 to DMI table - Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list asus-laptop: - Add key found on Asus F3M MAINTAINERS: - Remove Toshiba Linux mailing list address toshiba_acpi: - Bump driver version to 0.23 - Remove unnecessary checks and returns in HCI/SCI functions - Refactor *{get, set} functions return value - Remove "*not supported" feature prints - Change *available functions return type - Add set_fan_status function - Change some variables to avoid warnings from ninja-check - Reorder toshiba_acpi_alt_keymap entries - Remove unused wireless defines - Transflective backlight updates - Avoid registering input device on WMI event laptops - Add /dev/toshiba_acpi device - Adapt /proc/acpi/toshiba/keys to TOS1900 devices" * tag 'platform-drivers-x86-v4.3-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (21 commits) acer-wmi: No rfkill on HP Omen 15 wifi thinkpad_acpi: Remove side effects from vdbg_printk -> no_printk macro surface pro 3: Add support driver for Surface Pro 3 buttons hp-wireless: remove unneeded goto/label in hpwl_init ideapad-laptop: add alternative representation for Yoga 2 to DMI table asus-laptop: Add key found on Asus F3M MAINTAINERS: Remove Toshiba Linux mailing list address ideapad-laptop: Add Lenovo Yoga 3 14 to no_hw_rfkill dmi list toshiba_acpi: Bump driver version to 0.23 toshiba_acpi: Remove unnecessary checks and returns in HCI/SCI functions toshiba_acpi: Refactor *{get, set} functions return value toshiba_acpi: Remove "*not supported" feature prints toshiba_acpi: Change *available functions return type toshiba_acpi: Add set_fan_status function toshiba_acpi: Change some variables to avoid warnings from ninja-check toshiba_acpi: Reorder toshiba_acpi_alt_keymap entries toshiba_acpi: Remove unused wireless defines toshiba_acpi: Transflective backlight updates toshiba_acpi: Avoid registering input device on WMI event laptops toshiba_acpi: Add /dev/toshiba_acpi device ...
2015-09-04userfaultfd: uAPIAndrea Arcangeli1-0/+1
Defines the uAPI of the userfaultfd, notably the ioctl numbers and protocol. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Cc: Sanidhya Kashyap <sanidhya.gatech@gmail.com> Cc: zhang.zhanghailiang@huawei.com Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Andres Lagar-Cavilla <andreslc@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Hugh Dickins <hughd@google.com> Cc: Peter Feiner <pfeiner@google.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "Huangpeng (Peter)" <peter.huangpeng@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-02Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds1-0/+1
Pull first round of SCSI updates from James Bottomley: "This includes one new driver: cxlflash plus the usual grab bag of updates for the major drivers: qla2xxx, ipr, storvsc, pm80xx, hptiop, plus a few assorted fixes. There's another tranch coming, but I want to incubate it another few days in the checkers, plus it includes a mpt2sas separated lifetime fix, which Avago won't get done testing until Friday" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (85 commits) aic94xx: set an error code on failure storvsc: Set the error code correctly in failure conditions storvsc: Allow write_same when host is windows 10 storvsc: use storage protocol version to determine storage capabilities storvsc: use correct defaults for values determined by protocol negotiation storvsc: Untangle the storage protocol negotiation from the vmbus protocol negotiation. storvsc: Use a single value to track protocol versions storvsc: Rather than look for sets of specific protocol versions, make decisions based on ranges. cxlflash: Remove unused variable from queuecommand cxlflash: shift wrapping bug in afu_link_reset() cxlflash: off by one bug in cxlflash_show_port_status() cxlflash: Virtual LUN support cxlflash: Superpipe support cxlflash: Base error recovery support qla2xxx: Update driver version to 8.07.00.26-k qla2xxx: Add pci device id 0x2261. qla2xxx: Fix missing device login retries. qla2xxx: do not clear slot in outstanding cmd array qla2xxx: Remove decrement of sp reference count in abort handler. qla2xxx: Add support to show MPI and PEP FW version for ISP27xx. ...
2015-08-26cxlflash: Superpipe supportMatthew R. Ochs1-0/+1
Add superpipe supporting infrastructure to device driver for the IBM CXL Flash adapter. This patch allows userspace applications to take advantage of the accelerated I/O features that this adapter provides and bypass the traditional filesystem stack. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com> Reviewed-by: Michael Neuling <mikey@neuling.org> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-08-03mei: add async event notification ioctlsTomas Winkler1-0/+2
Add ioctl IOCTL_MEI_NOTIFY_SET for enabling and disabling async event notification. Add ioctl IOCTL_MEI_NOTIFY_GET for receiving and acking an event notification. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-24toshiba_acpi: Add /dev/toshiba_acpi deviceAzael Avalos1-1/+1
There were previous attempts to "merge" the toshiba SMM module to the toshiba_acpi one, they were trying to imitate what the old toshiba module does, however, some models (TOS1900 devices) come with a "crippled" implementation and do not provide all the "features" a "genuine" Toshiba BIOS does. This patch adds a new device called toshiba_acpi, which aim is to enable userspace to access the SMM on Toshiba laptops via ACPI calls. Creating a new convenience _IOWR command to access the SCI functions by opening/closing the SCI internally to avoid buggy BIOS, while at the same time providing backwards compatibility. Older programs (and new) who wish to access the SMM on newer models can do it by pointing their path to /dev/toshiba_acpi (instead of /dev/toshiba) as the toshiba.h header was modified to reflect these changes as well as adds all the toshiba_acpi paths and command, however, it is strongly recommended to use the new IOCTL for any SCI command to avoid any buggy BIOS. Signed-off-by: Azael Avalos <coproscefalo@gmail.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2015-07-01fuse: device fd cloneMiklos Szeredi1-0/+1
Allow an open fuse device to be "cloned". Userspace can create a clone by: newfd = open("/dev/fuse", O_RDWR) ioctl(newfd, FUSE_DEV_IOC_CLONE, &oldfd); At this point newfd will refer to the same fuse connection as oldfd. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
2015-02-26platform/chrome: Add Chrome OS EC userspace device interfaceBill Richardson1-0/+1
This patch adds a device interface to access the Chrome OS Embedded Controller from user-space. Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-by: Simon Glass <sjg@google.com> Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Reviewed-by: Gwendal Grignou <gwendal@chromium.org> Tested-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-by: Gwendal Grignou <gwendal@chromium.org> Signed-off-by: Olof Johansson <olof@lixom.net>
2014-10-08cxl: Add documentation for userspace APIsIan Munsie1-0/+1
This documentation gives an overview of the hardware architecture, userspace APIs via /dev/cxl/afuM.N and the syfs files. It also adds a MAINTAINERS file entry for cxl. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-08-09Documentation: add How to avoid botching up ioctlsMichael Ellerman2-0/+221
I pointed some folks at this and they wondered why it wasn't in the kernel Documentation directory. So now it is. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-20crypto: qat - Update to makefilesTadeusz Struk1-0/+1
Update to makefiles etc. Don't update the firmware/Makefile yet since there is no FW binary in the crypto repo yet. This will be added later. v3 - removed change to ./firmware/Makefile Reviewed-by: Bruce W. Allan <bruce.w.allan@intel.com> Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2014-01-24s390/hypfs: add interface for diagnose 0x304Martin Schwidefsky1-0/+1
To provide access to the set-partition-resource-parameter interface to user space add a new attribute to hypfs/debugfs: * s390_hypsfs/diag_304 The data for the query-partition-resource-parameters command can be access by a read on the attribute. All other diagnose 0x304 requests need to be submitted via ioctl with CAP_SYS_ADMIN rights. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-10-17ALSA: add DICE driverClemens Ladisch1-0/+1
As a start point for further development, this is an incomplete driver for DICE devices: - only playback (so no clock source except the bus clock) - only 44.1 kHz - no MIDI - recovery after bus reset is slow - hwdep device is created, but not actually implemented Contains compilation fixes by Stefan Richter. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
2013-06-26s390/sclp: Add SCLP character device driverMichael Holzheu1-0/+1
Add a character misc device "sclp_ctl" that allows to run SCCBs from user space using the SCLP_CTL_SCCB ioctl. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-03-25USB: cdc-wdm: implement IOCTL_WDM_MAX_COMMANDBjørn Mork1-0/+1
Userspace applications need to know the maximum supported message size. The cdc-wdm driver translates between a character device stream and a message based protocol. Each message is transported as a usb control message with no further encapsulation or syncronization. Each read or write on the character device should translate to exactly one usb control message to ensure that message boundaries are kept intact. That means that the userspace application must know the maximum message size supported by the device and driver, making this size a vital part of the cdc-wdm character device API. CDC WDM and CDC MBIM functions export the maximum supported message size through CDC functional descriptors. The cdc-wdm and cdc_mbim drivers will parse these descriptors and use the value chosen by the device. The only current way for a userspace application to retrive the value is by duplicating the descriptor parsing. This is an unnecessary complex task, and application writers are likely to postpone it, using a fixed value and adding a "todo" item. QMI functions have no way to tell the host what message size they support. The qmi_wwan driver use a fixed value based on protocol recommendations and observed device behaviour. Userspace applications must know and hard code the same value. This scheme will break if we ever encounter a QMI device needing a device specific message size quirk. We are currently unable to support such a device because using a non default size would break the implicit userspace API. The message size is currently a hidden attribute of the cdc-wdm userspace API. Retrieving it is unnecessarily complex, increasing the possibility of drivers and applications using different limits. The resulting errors are hard to debug, and can only be replicated on identical hardware. Exporting the maximum message size from the driver simplifies the task for the userspace application, and creates a unified information source independent of device and function class. It also serves to document that the message size is part of the cdc-wdm userspace API. This proposed API extension has been presented for the authors of userspace applications and libraries using the current API: libmbim, libqmi, uqmi, oFono and ModemManager. The replies were: Aleksander Morgado: "We do really need max message size for MBIM; and as you say, it may be good to have the max message size info also for QMI, so the new ioctl seems a good addition. So +1 from my side, for what it's worth." Dan Williams: "Yeah, +1 here. I'd prefer the sysfs file, but the fact that that doesn't work for fd passing pretty much kills it." No negative replies are so far received. Cc: Aleksander Morgado <aleksander@lanedo.com> Cc: Dan Williams <dcbw@redhat.com> Signed-off-by: Bjørn Mork <bjorn@mork.no> Acked-by: Oliver Neukum <oliver@neukum.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-31wanrouter: completely decouple obsolete code from kernel.Paul Gortmaker1-1/+1
The original suggestion to delete wanrouter started earlier with the mainline commit f0d1b3c2bcc5de8a17af5f2274f7fcde8292b5fc ("net/wanrouter: Deprecate and schedule for removal") in May 2012. More importantly, Dan Carpenter found[1] that the driver had a fundamental breakage introduced back in 2008, with commit 7be6065b39c3 ("netdevice wanrouter: Convert directly reference of netdev->priv"). So we know with certainty that the code hasn't been used by anyone willing to at least take the effort to send an e-mail report of breakage for at least 4 years. This commit does a decouple of the wanrouter subsystem, by going after the Makefile/Kconfig and similar files, so that these mainline files that we are keeping do not have the big wanrouter file/driver deletion commit tied into their history. Once this commit is in place, we then can remove the obsolete cyclomx drivers and similar that have a dependency on CONFIG_WAN_ROUTER_DRIVERS. [1] http://www.spinics.net/lists/netdev/msg218670.html Originally-by: Joe Perches <joe@perches.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-08-14ioctl-number.txt: Remove legacy private ioctl's from media driversMauro Carvalho Chehab1-5/+0
None of those drivers use private ioctl's, as they all got converted to the standard V4L2 ones. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-07-31vfio: VFIO coreAlex Williamson1-0/+1
VFIO is a secure user level driver for use with both virtual machines and user level drivers. VFIO makes use of IOMMU groups to ensure the isolation of devices in use, allowing unprivileged user access. It's intended that VFIO will replace KVM device assignment and UIO drivers (in cases where the target platform includes a sufficiently capable IOMMU). New in this version of VFIO is support for IOMMU groups managed through the IOMMU core as well as a rework of the API, removing the group merge interface. We now go back to a model more similar to original VFIO with UIOMMU support where the file descriptor obtained from /dev/vfio/vfio allows access to the IOMMU, but only after a group is added, avoiding the previous privilege issues with this type of model. IOMMU support is also now fully modular as IOMMUs have vastly different interface requirements on different platforms. VFIO users are able to query and initialize the IOMMU model of their choice. Please see the follow-on Documentation commit for further description and usage example. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2012-05-09mei: update Documentation/ioctl/ioctl-number.txtTomas Winkler1-0/+1
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-02Merge branch 'for-next' of git://gitorious.org/kernel-hsi/kernel-hsiLinus Torvalds1-0/+1
Pull HSI (High Speed Synchronous Serial Interface) framework from Carlos Chinea: "The High Speed Synchronous Serial Interface (HSI) is a serial interface mainly used for connecting application engines (APE) with cellular modem engines (CMT) in cellular handsets. The framework is currently being used for some people and we would like to see it integrated into the kernel for 3.3. There is no HW controller drivers in this pull, but some people have already some of them pending which they would like to push as soon as this integrated. I am also working on the acceptance for an TI OMAP one, based on a compatible legacy version of the interface called SSI." Ok, so it didn't get into 3.3, but here it is pulled into 3.4. Several people piped up to say "yeah, we want this". * 'for-next' of git://gitorious.org/kernel-hsi/kernel-hsi: HSI: hsi_char: Update ioctl-number.txt HSI: Add HSI API documentation HSI: hsi_char: Add HSI char device kernel configuration HSI: hsi_char: Add HSI char device driver HSI: hsi: Introducing HSI framework
2012-03-21Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile 1 from Al Viro: "This is _not_ all; in particular, Miklos' and Jan's stuff is not there yet." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (64 commits) ext4: initialization of ext4_li_mtx needs to be done earlier debugfs-related mode_t whack-a-mole hfsplus: add an ioctl to bless files hfsplus: change finder_info to u32 hfsplus: initialise userflags qnx4: new helper - try_extent() qnx4: get rid of qnx4_bread/qnx4_getblk take removal of PF_FORKNOEXEC to flush_old_exec() trim includes in inode.c um: uml_dup_mmap() relies on ->mmap_sem being held, but activate_mm() doesn't hold it um: embed ->stub_pages[] into mmu_context gadgetfs: list_for_each_safe() misuse ocfs2: fix leaks on failure exits in module_init ecryptfs: make register_filesystem() the last potential failure exit ntfs: forgets to unregister sysctls on register_filesystem() failure logfs: missing cleanup on register_filesystem() failure jfs: mising cleanup on register_filesystem() failure make configfs_pin_fs() return root dentry on success configfs: configfs_create_dir() has parent dentry in dentry->d_parent configfs: sanitize configfs_create() ...
2012-03-20Merge branch 'for-linus' of ↵Linus Torvalds1-2/+2
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 ...
2012-03-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds1-1/+1
Pull networking merge from David Miller: "1) Move ixgbe driver over to purely page based buffering on receive. From Alexander Duyck. 2) Add receive packet steering support to e1000e, from Bruce Allan. 3) Convert TCP MD5 support over to RCU, from Eric Dumazet. 4) Reduce cpu usage in handling out-of-order TCP packets on modern systems, also from Eric Dumazet. 5) Support the IP{,V6}_UNICAST_IF socket options, making the wine folks happy, from Erich Hoover. 6) Support VLAN trunking from guests in hyperv driver, from Haiyang Zhang. 7) Support byte-queue-limtis in r8169, from Igor Maravic. 8) Outline code intended for IP_RECVTOS in IP_PKTOPTIONS existed but was never properly implemented, Jiri Benc fixed that. 9) 64-bit statistics support in r8169 and 8139too, from Junchang Wang. 10) Support kernel side dump filtering by ctmark in netfilter ctnetlink, from Pablo Neira Ayuso. 11) Support byte-queue-limits in gianfar driver, from Paul Gortmaker. 12) Add new peek socket options to assist with socket migration, from Pavel Emelyanov. 13) Add sch_plug packet scheduler whose queue is controlled by userland daemons using explicit freeze and release commands. From Shriram Rajagopalan. 14) Fix FCOE checksum offload handling on transmit, from Yi Zou." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1846 commits) Fix pppol2tp getsockname() Remove printk from rds_sendmsg ipv6: fix incorrent ipv6 ipsec packet fragment cpsw: Hook up default ndo_change_mtu. net: qmi_wwan: fix build error due to cdc-wdm dependecy netdev: driver: ethernet: Add TI CPSW driver netdev: driver: ethernet: add cpsw address lookup engine support phy: add am79c874 PHY support mlx4_core: fix race on comm channel bonding: send igmp report for its master fs_enet: Add MPC5125 FEC support and PHY interface selection net: bpf_jit: fix BPF_S_LDX_B_MSH compilation net: update the usage of CHECKSUM_UNNECESSARY fcoe: use CHECKSUM_UNNECESSARY instead of CHECKSUM_PARTIAL on tx net: do not do gso for CHECKSUM_UNNECESSARY in netif_needs_gso ixgbe: Fix issues with SR-IOV loopback when flow control is disabled net/hyperv: Fix the code handling tx busy ixgbe: fix namespace issues when FCoE/DCB is not enabled rtlwifi: Remove unused ETH_ADDR_LEN defines igbvf: Use ETH_ALEN ... Fix up fairly trivial conflicts in drivers/isdn/gigaset/interface.c and drivers/net/usb/{Kconfig,qmi_wwan.c} as per David.
2012-03-20hfsplus: add an ioctl to bless filesMatthew Garrett1-0/+1
Making an hfsplus partition bootable requires the ability to "bless" a file by putting its inode number in the volume header. Doing this from userspace on a mounted filesystem is impractical since the kernel will write back the original values on unmount. Add an ioctl to allow userspace to update the volume header information based on the target file. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-03-07Documentation: Fix multiple typo in DocumentationMasanari Iida1-2/+2
Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-03-04ppp: Move ioctl definitions from if_ppp.h to new ppp-ioctl.hPaul Mackerras1-1/+1
This moves the definitions of the ioctls, constants and structures relating to the ppp_generic interface to userspace out from if_ppp.h to a new file, ppp-ioctl.h. The new file has my copyright since I designed and implemented the ppp_generic interface in the late 1990s. None of the contents of this file comes from the original if_ppp.h published by Carnegie Mellon University. Of the remainder of if_ppp.h, only the PPP_MTU definition was being used, and this replaces the uses of it with PPP_MRU (which is identical). Therefore, this replaces the entire file with the single line #include <linux/ppp-ioctl.h> which clearly doesn't contain any CMU code. Thus I have removed the CMU copyright notice with its problematic advertising clause, and in fact since it's only one trivial line I have not added any other copyright notice. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-15driver-core: documentation: fix up Greg's email addressGreg Kroah-Hartman1-1/+1
My old email address was used in a lot of documentation files, so fix this up to point to the correct one now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-01-05HSI: hsi_char: Update ioctl-number.txtAndras Domokos1-0/+1
Added ioctl range for HSI char devices to the documentation Signed-off-by: Andras Domokos <andras.domokos@nokia.com> Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com>
2011-11-04NVMe: New driverMatthew Wilcox1-0/+1
This driver is for devices that follow the NVM Express standard Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
2011-09-12ioctl: register LTTng ioctlMathieu Desnoyers1-0/+2
The LTTng 2.0 kernel tracer (stand-alone module package, available at http://lttng.org) uses the 0xF6 ioctl range for tracer control and transport operations. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds1-0/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile/mm/init.c: trivial: use BUG_ON arch/tile: remove useless set_fixmap_nocache() macro arch/tile: add hypervisor-based character driver for SPI flash ROM ioctl-number.txt: add the tile hardwall ioctl range tile: use generic-y format for one-line asm-generic headers clocksource: tile: convert to use clocksource_register_hz