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2015-07-19iio: mlx96014: Replace offset signCrt Mori
Changed the offset to negative as usual equation is: (raw + offset)*scale and in this case offset should be negative (as we deduct 273.15 Kelvin to get temperature in Celsius). Signed-off-by: Crt Mori <cmo@melexis.com> Acked-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: magnetometer: mmc35240: fix SET/RESET sequenceViorel Suman
The RESET operation invoked in the last instance will align in the natural way all 3 axis and the chip top view. Without this, north and south are swapped. Signed-off-by: Viorel Suman <viorel.suman@intel.com> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: magnetometer: mmc35240: Fix SET/RESET maskDaniel Baluta
This fixes setting the SET/RESET bit in the REG_CTRL0 register. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: magnetometer: mmc35240: Fix crash in pm suspendDaniel Baluta
We must set i2c client private data at probe in order to correctly retrieve it in pm suspend/resume, preventing the following crash: [ 321.790582] PM: Syncing filesystems ... done. [ 322.364440] PM: Preparing system for mem sleep [ 322.400047] PM: Entering mem sleep [ 322.462178] BUG: unable to handle kernel NULL pointer dereference at 0000036c [ 322.469119] IP: [<80e0b3d2>] mmc35240_suspend+0x12/0x30 [ 322.474291] *pdpt = 000000002fd6f001 *pde = 0000000000000000 [ 322.479967] Oops: 0000 1 PREEMPT SMP [ 322.496516] task: a86d0df0 ti: a8766000 task.ti: a8766000 [ 322.570744] Call Trace: [ 322.573217] [<80c0d2d1>] pm_generic_suspend+0x21/0x30 [ 322.578284] [<80d042ab>] i2c_device_pm_suspend+0x1b/0x30 Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:magnetometer:bmc150_magn: output intended variableHartmut Knaack
According to the debug/error string, the content of chip_id is supposed to be output, rather than the return value of the previous operation. Fixes: c91746a2361d ("iio: magn: Add support for BMC150 magnetometer") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:magnetometer:bmc150_magn: add regmap dependencyHartmut Knaack
bmc150_magn makes use of REGMAP_I2C, so select it to build always without errors. Fixes: c91746a2361d ("iio: magn: Add support for BMC150 magnetometer") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19staging: vt6656: check ieee80211_bss_conf bssid not NULLMalcolm Priestley
Sometimes bssid can go null on failed association. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Cc: <stable@vger.kernel.org> # v3.17+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-19staging: vt6655: check ieee80211_bss_conf bssid not NULLMalcolm Priestley
Sometimes bssid can go null on failed association. Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com> Cc: <stable@vger.kernel.org> # v3.19+ Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-19iio: tmp006: Check channel info on writePeter Meerwald
only SAMP_FREQ is writable Will lead to SAMP_FREQ being written by any attempt to write to the other exported attributes and hence a rather unexpected result! Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: sx9500: Add missing init in sx9500_buffer_pre{en,dis}able()Geert Uytterhoeven
drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_preenable’: drivers/iio/proximity/sx9500.c:682: warning: ‘ret’ may be used uninitialized in this function drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_predisable’: drivers/iio/proximity/sx9500.c:706: warning: ‘ret’ may be used uninitialized in this function If active_scan_mask is empty, it will loop once more over all channels, doing nothing. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:light:ltr501: fix regmap dependencyHartmut Knaack
The use of regmap in commit 2f2c96338afc requires REGMAP_I2C to be selected, in order to meet all dependencies. Fixes: 2f2c96338afc ("iio: ltr501: Add regmap support.") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:light:ltr501: fix variable in ltr501_initHartmut Knaack
When filling data->als_contr, the register content read into status needs to be used, instead of the return status value of regmap_read. Fixes: 8592a7eefa540 ("iio: ltr501: Add support for ltr559 chip") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: sx9500: fix bug in compensation codeVlad Dogaru
The initial compensation was mistakingly toggling an extra bit in the control register. Fix this and make sure it's less likely to happen by introducing an additional macro. Reported-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: sx9500: rework error handling of raw readingsVlad Dogaru
Fix error handling so that we can power the chip down even if a raw read fails. Reported-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: magnetometer: mmc35240: fix available sampling frequenciesTeodora Baluta
Fix the sampling frequencies according to the datasheet (page 8). The datasheet specifies the following available frequencies for continuous mode: 1.5 Hz, 13 Hz, 25 Hz, and 50 Hz. Also fix comments about the ODR to comply with datasheet. Signed-off-by: Teodora Baluta <teodora.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:light:stk3310: Fix REGMAP_I2C dependencyHartmut Knaack
The stk3310 driver makes use of regmap_i2c, so this dependency needs to be reflected in Kconfig. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: light: STK3310: un-invert proximity valuesTiberiu Breana
In accordance with the recent proximity ABI changes, STK3310's proximity readings should be un-inversed in order to return low values for far-away objects and high values for close ones. As consequences of this change, iio event directions have been switched and maximum proximity sensor reference values have also been adjusted in accordance with the real readings. Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:adc:cc10001_adc: fix Kconfig dependencyHartmut Knaack
The Cosmic Circuits 10001 ADC driver depends on HAS_IOMEM, HAVE_CLK and REGULATOR together, not just any of these. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: light: tcs3414: Fix bug preventing to set integration timePeter Meerwald
the millisecond values in tcs3414_times should be checked against val2, not val, which is always zero. Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Reported-by: Stephan Kleisinger <stephan.kleisinger@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:accel:bmc150-accel: fix counting directionHartmut Knaack
In bmc150_accel_unregister_triggers() triggers should be unregistered in reverse order of registration. Trigger registration starts with number 0, counting up. In consequence, trigger number needs to be count down here. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Reviewed-by: Octavian Purdila <octavian.purdila@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio:light:cm3323: clear bitmask before setHartmut Knaack
When setting the bits for integration time, the appropriate bitmask needs to be cleared first. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: adc: at91_adc: allow to use full range of startup timeJan Leupold
The DT-Property "atmel,adc-startup-time" is stored in an u8 for a microsecond value. When trying to increase the value of STARTUP in Register AT91_ADC_MR some higher values can't be reached. Change the type in function parameter and private structure field from u8 to u32. Signed-off-by: Jan Leupold <leupold@rsi-elektrotechnik.de> [nicolas.ferre@atmel.com: change commit message, increase u16 to u32 for startup time] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: DAC: ad5624r_spi: fix bit shift of output data valueJM Friedt
The value sent on the SPI bus is shifted by an erroneous number of bits. The shift value was already computed in the iio_chan_spec structure and hence subtracting this argument to 16 yields an erroneous data position in the SPI stream. Signed-off-by: JM Friedt <jmfriedt@femto-st.fr> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: proximity: sx9500: Fix proximity valueDaniel Baluta
Because of the ABI confusion proximity value exposed by SX9500 was inverted. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: inv-mpu: Specify the expected format/precision for write channelsAdriana Reus
The gyroscope needs IIO_VAL_INT_PLUS_NANO for the scale channel and unless specified write returns MICRO by default. This needs to be properly specified so that write operations into scale have the expected behaviour. Signed-off-by: Adriana Reus <adriana.reus@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: twl4030-madc: Pass the IRQF_ONESHOT flagFabio Estevam
Since commit 1c6c69525b40 ("genirq: Reject bogus threaded irq requests") threaded IRQs without a primary handler need to be requested with IRQF_ONESHOT, otherwise the request will fail. So pass the IRQF_ONESHOT flag in this case. The semantic patch that makes this change is available in scripts/coccinelle/misc/irqf_oneshot.cocci. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Cc: <stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19iio: adc: rockchip_saradc: add missing MODULE_* dataHeiko Stuebner
The module-data is currently missing. This includes the license-information which makes the driver taint the kernel and miss symbols when compiled as module. Fixes: 44d6f2ef94f9 ("iio: adc: add driver for Rockchip saradc") Signed-off-by: Heiko Stuebner <heiko@sntech.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-19hid-sensor: Fix suspend/resume delaySrinivas Pandruvada
By default all the sensors are runtime suspended state (lowest power state). During Linux suspend process, all the run time suspended devices are resumed and then suspended. This caused all sensors to power up and introduced delay in suspend time, when we introduced runtime PM for HID sensors. The opposite process happens during resume process. To fix this, we do powerup process of the sensors only when the request is issued from user (raw or tiggerred). In this way when runtime, resume calls for powerup it will simply return as this will not match user requested state. Note this is a regression fix as the increase in suspend / resume times can be substantial (report of 8 seconds on Len's laptop!) Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Tested-by: Len Brown <len.brown@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-07-06staging:lustre: remove irq.h from socklnd.hJames Simmons
The header socklnd.h includes irq.h which is not need and doesn't exist in the OpenSFS lustre branch. Having irq.h in socklnd.h does break the build on the m68k platform. So we can safely remove it. Signed-off-by: James Simmons <jsimmons@infradead.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Tested-by: by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-06staging: make board support depend on OF_IRQ and CLKDEV_LOOKUPPaul Gortmaker
Building allmodconfig for arch/cris currently fails with: drivers/built-in.o: In function `board_staging_register_clock': drivers/staging/board/board.c:131: undefined reference to `clk_add_alias' make: *** [vmlinux] Error 1 The clk_add_alias lives in drivers/clk/clkdev.c and that file is only compiled for CONFIG_CLKDEV_LOOKUP, so it would seem we need to add a dependency on that. Geert also reported seeing this in his build coverage: There seems to be another missing dependency on OF_IRQ: drivers/built-in.o: In function `board_staging_gic_fixup_resources': (.init.text+0x21c2): undefined reference to `irq_create_of_mapping' so we might as well fix that at the same time since it is on the same line. Cc: Magnus Damm <damm+renesas@opensource.se> Cc: Simon Horman <horms+renesas@verge.net.au> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-05Merge tag 'platform-drivers-x86-v4.2-2' of ↵Linus Torvalds
git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 Pull late x86 platform driver updates from Darren Hart: "The following came in a bit later and I wanted them to bake in next a few more days before submitting, thus the second pull. A new intel_pmc_ipc driver, a symmetrical allocation and free fix in dell-laptop, a couple minor fixes, and some updated documentation in the dell-laptop comments. intel_pmc_ipc: - Add Intel Apollo Lake PMC IPC driver tc1100-wmi: - Delete an unnecessary check before the function call "kfree" dell-laptop: - Fix allocating & freeing SMI buffer page - Show info about WiGig and UWB in debugfs - Update information about wireless control" * tag 'platform-drivers-x86-v4.2-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: intel_pmc_ipc: Add Intel Apollo Lake PMC IPC driver tc1100-wmi: Delete an unnecessary check before the function call "kfree" dell-laptop: Fix allocating & freeing SMI buffer page dell-laptop: Show info about WiGig and UWB in debugfs dell-laptop: Update information about wireless control
2015-07-04Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more vfs updates from Al Viro: "Assorted VFS fixes and related cleanups (IMO the most interesting in that part are f_path-related things and Eric's descriptor-related stuff). UFS regression fixes (it got broken last cycle). 9P fixes. fs-cache series, DAX patches, Jan's file_remove_suid() work" [ I'd say this is much more than "fixes and related cleanups". The file_table locking rule change by Eric Dumazet is a rather big and fundamental update even if the patch isn't huge. - Linus ] * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits) 9p: cope with bogus responses from server in p9_client_{read,write} p9_client_write(): avoid double p9_free_req() 9p: forgetting to cancel request on interrupted zero-copy RPC dax: bdev_direct_access() may sleep block: Add support for DAX reads/writes to block devices dax: Use copy_from_iter_nocache dax: Add block size note to documentation fs/file.c: __fget() and dup2() atomicity rules fs/file.c: don't acquire files->file_lock in fd_install() fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation vfs: avoid creation of inode number 0 in get_next_ino namei: make set_root_rcu() return void make simple_positive() public ufs: use dir_pages instead of ufs_dir_pages() pagemap.h: move dir_pages() over there remove the pointless include of lglock.h fs: cleanup slight list_entry abuse xfs: Correctly lock inode when removing suid and file capabilities fs: Call security_ops->inode_killpriv on truncate fs: Provide function telling whether file_remove_privs() will do anything ...
2015-07-04Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "It's been a busy development cycle for target-core in a number of different areas. The fabric API usage for se_node_acl allocation is now within target-core code, dropping the external API callers for all fabric drivers tree-wide. There is a new conversion to RCU hlists for se_node_acl and se_portal_group LUN mappings, that turns fast-past LUN lookup into a completely lockless code-path. It also removes the original hard-coded limitation of 256 LUNs per fabric endpoint. The configfs attributes for backends can now be shared between core and driver code, allowing existing drivers to use common code while still allowing flexibility for new backend provided attributes. The highlights include: - Merge sbc_verify_dif_* into common code (sagi) - Remove iscsi-target support for obsolete IFMarker/OFMarker (Christophe Vu-Brugier) - Add bidi support in target/user backend (ilias + vangelis + agover) - Move se_node_acl allocation into target-core code (hch) - Add crc_t10dif_update common helper (akinobu + mkp) - Handle target-core odd SGL mapping for data transfer memory (akinobu) - Move transport ID handling into target-core (hch) - Move task tag into struct se_cmd + support 64-bit tags (bart) - Convert se_node_acl->device_list[] to RCU hlist (nab + hch + paulmck) - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch + paulmck) - Simplify target backend driver registration (hch) - Consolidate + simplify target backend attribute implementations (hch + nab) - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch) - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab) - Drop unnecessary core_tpg_register TFO parameter (nab) - Use 64-bit LUNs tree-wide (hannes) - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits) target: Bump core version to v5.0 target: remove target_core_configfs.h target: remove unused TARGET_CORE_CONFIG_ROOT define target: consolidate version defines target: implement WRITE_SAME with UNMAP bit using ->execute_unmap target: simplify UNMAP handling target: replace se_cmd->execute_rw with a protocol_data field target/user: Fix inconsistent kmap_atomic/kunmap_atomic target: Send UA when changing LUN inventory target: Send UA upon LUN RESET tmr completion target: Send UA on ALUA target port group change target: Convert se_lun->lun_deve_lock to normal spinlock target: use 'se_dev_entry' when allocating UAs target: Remove 'ua_nacl' pointer from se_ua structure target_core_alua: Correct UA handling when switching states xen-scsiback: Fix compile warning for 64-bit LUN target: Remove TARGET_MAX_LUNS_PER_TRANSPORT target: use 64-bit LUNs target: Drop duplicate + unused se_dev_check_wce target: Drop unnecessary core_tpg_register TFO parameter ...
2015-07-04Merge tag 'ntb-4.2' of git://github.com/jonmason/ntbLinus Torvalds
Pull NTB updates from Jon Mason: "This includes a pretty significant reworking of the NTB core code, but has already produced some significant performance improvements. An abstraction layer was added to allow the hardware and clients to be easily added. This required rewriting the NTB transport layer for this abstraction layer. This modification will allow future "high performance" NTB clients. In addition to this change, a number of performance modifications were added. These changes include NUMA enablement, using CPU memcpy instead of asyncdma, and modification of NTB layer MTU size" * tag 'ntb-4.2' of git://github.com/jonmason/ntb: (22 commits) NTB: Add split BAR output for debugfs stats NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe NTB: Print driver name and version in module init NTB: Increase transport MTU to 64k from 16k NTB: Rename Intel code names to platform names NTB: Default to CPU memcpy for performance NTB: Improve performance with write combining NTB: Use NUMA memory in Intel driver NTB: Use NUMA memory and DMA chan in transport NTB: Rate limit ntb_qp_link_work NTB: Add tool test client NTB: Add ping pong test client NTB: Add parameters for Intel SNB B2B addresses NTB: Reset transport QP link stats on down NTB: Do not advance transport RX on link down NTB: Differentiate transport link down messages NTB: Check the device ID to set errata flags NTB: Enable link for Intel root port mode in probe NTB: Read peer info from local SPAD in transport NTB: Split ntb_hw_intel and ntb_transport drivers ...
2015-07-04Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm fixes from Paolo Bonzini: "Except for the preempt notifiers fix, these are all small bugfixes that could have been waited for -rc2. Sending them now since I was taking care of Peter's patch anyway" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: kvm: add hyper-v crash msrs values KVM: x86: remove data variable from kvm_get_msr_common KVM: s390: virtio-ccw: don't overwrite config space values KVM: x86: keep track of LVT0 changes under APICv KVM: x86: properly restore LVT0 KVM: x86: make vapics_in_nmi_mode atomic sched, preempt_notifier: separate notifier registration from static_key inc/dec
2015-07-04NTB: Add split BAR output for debugfs statsDave Jiang
When split BAR is enabled, the driver needs to dump out the split BAR registers rather than the original 64bit BAR registers. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Change WARN_ON_ONCE to pr_warn_once on unsafeDave Jiang
The unsafe doorbell and scratchpad access should display reason when WARN is called. Otherwise we get a stack dump without any explanation. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Print driver name and version in module initDave Jiang
Printouts driver name and version to indicate what is being loaded. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Increase transport MTU to 64k from 16kDave Jiang
Benchmarking showed a significant performance increase with the MTU size to 64k instead of 16k. Change the driver default to 64k. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Rename Intel code names to platform namesDave Jiang
Instead of using the platform code names, use the correct platform names to identify the respective Intel NTB hardware. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Default to CPU memcpy for performanceDave Jiang
Disable DMA usage by default, since the CPU provides much better performance with write combining. Provide a module parameter to enable DMA usage when offloading the memcpy is preferred. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Improve performance with write combiningDave Jiang
Changing the memory window BAR mappings to write combining significantly boosts the performance. We will also use memcpy that uses non-temporal store, which showed performance improvement when doing non-cached memcpys. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Use NUMA memory in Intel driverAllen Hubbe
Allocate memory for the NUMA node of the NTB device. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Use NUMA memory and DMA chan in transportAllen Hubbe
Allocate memory and request the DMA channel for the same NUMA node as the NTB device. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Rate limit ntb_qp_link_workAllen Hubbe
When the ntb transport is connecting and waiting for the peer, the debug console receives lots of debug level messages about the remote qp link status being down. Rate limit those messages. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Add tool test clientAllen Hubbe
This is a simple debugging driver that enables the doorbell and scratch pad registers to be read and written from the debugfs. This tool enables more complicated debugging to be scripted from user space. This driver may be used to test that your ntb hardware and drivers are functioning at a basic level. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Add ping pong test clientAllen Hubbe
This is a simple ping pong driver that exercises the scratch pads and doorbells of the ntb hardware. This driver may be used to test that your ntb hardware and drivers are functioning at a basic level. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Add parameters for Intel SNB B2B addressesAllen Hubbe
Add module parameters for the addresses to be used in B2B topology. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Reset transport QP link stats on downAllen Hubbe
Reset the link stats when the link goes down. In particular, the TX and RX index and count must be reset, or else the TX side will be sending packets to the RX side where the RX side is not expecting them. Reset all the stats, to be consistent. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04NTB: Do not advance transport RX on link downAllen Hubbe
On link down, don't advance RX index to the next entry. The next entry should never be valid after receiving the link down flag. Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>