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2015-08-07ASoC: Intel: Skylake: Add helpers for SRC and converter modulesHardik T Shah2-4/+76
SRC and converter modules are required to do frequency and channel conversion in DSP. Both take base module configuration and additional SRC and converter parameters. The helpers here are added to calculate the values for these modules Signed-off-by: Hardik T Shah <hardik.t.shah@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07ASoC: Intel: Skylake: Add helpers for DSP module configurationJeeja KP3-0/+725
This adds helper functions to calculate parameters required for base module format and copier module. A generic module is modelled by base module. Copier module is responsible for getting/sending data to FE (host DMAs) and BE (link HDA DMA, SSP, PDM) This also ads module pin management helpers which help in finding pins to use or freeing them up Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07ASoC: Intel: Skylake: Use acpi header for NHLT headerJeeja KP2-13/+2
Instead of defining own acpi header, use the available acpi header defined in acpi framework. Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07ASoC: Intel: Skylake: Fix the NHLT rate sizeJeeja KP1-1/+1
Sampling rate type needs to be u32 instead of u8, nhlt wav format description expected u32 for rate, passing u8 will fetch NULL config in skl_get_ep_blob(). Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-08-07ASoC: intel: use kmemdup rather than duplicating its implementationAndrzej Hajda1-2/+1
The patch was generated using fixed coccinelle semantic patch scripts/coccinelle/api/memdup.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2014320 Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-23ASoC: Intel: Skylake: Add dsp and ipc init helpersJeeja KP3-1/+140
This helper function will be used by the Skylake driver for dsp and ipc initialization if processing pipe capability is supported. Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-23ASoC: Intel: Skylake: Add NHLT support to get BE configJeeja KP4-1/+265
The Non-HD Audio Endpoint Description table contains the link configuration information for the DSP. This is specific to Non HDA links only, like I2s and PDM Skylake driver will use NHLT table to retrieve the configuration based on the link type, format, channel and rate. This configuration is passed to DSP FW Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: Print error code in IPC for SKLOmair M Abdullah1-0/+6
Signed-off-by: Omair M Abdullah <omair.m.abdullah@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: Add SKL DSP initializationSubhransu S. Prusty4-1/+295
This adds the dsp and ipc initialization for the Skylake platform. It also requests firmware and uses code loader dma to load it. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: Process code loader DMA interruptSubhransu S. Prusty2-0/+8
The code loader DMA interrupt is received by main interrupt handler which dispatches it to cldma routines Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: Add code loader DMA APIsVinod Koul4-1/+143
This patch adds the last piece of code loader DMA APIs by adding the code loader DMA APIs for the driver to use Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: add code loader DMA operationsVinod Koul2-0/+254
This patch starts adding code loader DMA handling internal operations for setting up bdle, controller, spb, cleanup routines and buffer filling Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: Add code loader DMA registersVinod Koul1-0/+191
Skylake has a DMA controller for loading DSP code and modules to memory. Add the register defines for this DMA Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16ASoC: Intel: Skylake: Add dsp loader opsSubhransu S. Prusty1-0/+9
The ops is initialized during the dsp registration and used for the allocating dma buffers. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add DSP init and boot up functionality for SKLSubhransu S. Prusty4-1/+399
This patch adds code to enable, disable and boot DSP core. Also provide some helpers to reset and power up/down the core. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add Skylake IPC librarySubhransu S. Prusty5-0/+895
This adds base SKL IPC library which uses common SST IPC lib. Here we add definition for IPC types, sending and receiving IPC messages from aDSP, handling interrupt, sending different types of messages etc Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add helper to update register bits with attr RWCSubhransu S. Prusty2-0/+32
For SKL IPC, we have some register bits with attribute RWC. So we need to force update them. Add helper to force update this type of registers bits. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add helper to poll register for DSP statusSubhransu S. Prusty2-0/+45
This patch adds helper to poll register for DSP status. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Kp, Jeeja <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add support for decoupled mode in skl driverJeeja KP2-8/+349
Decoupled mode is where audio link is broken to frontend HDA and backend (hda/i2s/dmic/hdmi) links. This patch adds support for decoupled mode and then adds dais, dai ops for be/fe cpu dais and interrupt handler change to support decoupled mode Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add makefile support for SKL driverJeeja KP3-0/+8
This adds makefile and Kconfig to enable Skylake HD audio PCM driver Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add Skylake HDA audio driverJeeja KP1-0/+525
This patch follows up by adding the HDA controller operations. This code is mostly derived from Intel HDA PCI driver without legacy bits Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-09ASoC: Intel: Add Skylake HDA platform driverJeeja KP2-0/+657
This patch starts to add the Skylake HDA platform driver by defining SoC CPU dais, DMA driver ops and implements ALSA operations Signed-off-by: Jeeja KP <jeeja.kp@intel.com> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: Intel: Reorganize the common dsp structureSubhransu S. Prusty1-4/+8
We will add SKL platform data. So organizing common and platform specific data helps. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: Intel: Define SKL ADSP IPC and general purpose registersSubhransu S. Prusty1-0/+62
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Kp, Jeeja <jeeja.kp@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: intel - atom: fix sst_platform_compr_ops declarationVinod Koul2-1/+1
Sparse complains that sst_platform_compr_ops should be static, but the declaration of this symbol was not correct so declare the symbol as extern in header file sound/soc/intel/atom/sst-mfld-platform-compress.c:257:22: warning: symbol 'sst_platform_compr_ops' was not declared. Should it be static? Signed-off-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: intel - atom: statify sst_slot_enum_infoVinod Koul1-1/+1
Sparse complains that sst_slot_enum_info should be static, so make it static sound/soc/intel/atom/sst-atom-controls.c:135:5: warning: symbol 'sst_slot_enum_info' was not declared. Should it be static? Signed-off-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: intel - kconfig: remove SND_SOC_INTEL_SST promptVinod Koul1-10/+9
The SND_SOC_INTEL_SST is for common IPC lib and this should ideally be not selectable symbol but selected by respective machine driver So remove the prompt and get respective machines select it Signed-off-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: intel: kconfig - Move DW_DMAC_CORE dependency to machinesVinod Koul1-1/+4
Some HSW and BYT machines depend on the DW_DMAC_CORE so they should have have depends on this symbol rather than common IPC lib as SKL onwards IPC lib is used but we don't depend on DW_DMAC_CORE Signed-off-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-08ASoC: Intel: use CONFIG_SND_SOC for intel boardsVinod Koul1-1/+1
The Intel boards directory was under CONFIG_SND_SOC_INTEL_SST so the machines which don't need these were not allowed to be selected/compiled without enabling this symbol The machine should be allowed to selected by ASoC and then they should select rest of symbols required Reported-by: Michele Curti <michele.curti@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Acked-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-05Linux 4.2-rc1Linus Torvalds1-2/+2
2015-07-05Merge tag 'platform-drivers-x86-v4.2-2' of ↵Linus Torvalds7-45/+1004
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
2015-07-05Merge branch 'for-linus' of ↵Linus Torvalds99-553/+784
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 ...
2015-07-05bluetooth: fix list handlingLinus Torvalds2-2/+3
Commit 835a6a2f8603 ("Bluetooth: Stop sabotaging list poisoning") thought that the code was sabotaging the list poisoning when NULL'ing out the list pointers and removed it. But what was going on was that the bluetooth code was using NULL pointers for the list as a way to mark it empty, and that commit just broke it (and replaced the test with NULL with a "list_empty()" test on a uninitialized list instead, breaking things even further). So fix it all up to use the regular and real list_empty() handling (which does not use NULL, but a pointer to itself), also making sure to initialize the list properly (the previous NULL case was initialized implicitly by the session being allocated with kzalloc()) This is a combination of patches by Marcel Holtmann and Tedd Ho-Jeong An. [ I would normally expect to get this through the bt tree, but I'm going to release -rc1, so I'm just committing this directly - Linus ] Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Original-by: Tedd Ho-Jeong An <tedd.an@intel.com> Original-by: Marcel Holtmann <marcel@holtmann.org>: Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-07-05Merge branch 'for-next' of ↵Linus Torvalds68-6312/+3163
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 ...
2015-07-05Merge tag 'ntb-4.2' of git://github.com/jonmason/ntbLinus Torvalds23-2816/+5545
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 ...
2015-07-049p: cope with bogus responses from server in p9_client_{read,write}Al Viro1-0/+8
if server claims to have written/read more than we'd told it to, warn and cap the claimed byte count to avoid advancing more than we are ready to.
2015-07-04p9_client_write(): avoid double p9_free_req()Al Viro1-0/+1
Braino in "9p: switch p9_client_write() to passing it struct iov_iter *"; if response is impossible to parse and we discard the request, get the out of the loop right there. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-07-049p: forgetting to cancel request on interrupted zero-copy RPCAl Viro1-1/+2
If we'd already sent a request and decide to abort it, we *must* issue TFLUSH properly and not just blindly reuse the tag, or we'll get seriously screwed when response eventually arrives and we confuse it for response to later request that had reused the same tag. Cc: stable@vger.kernel.org # v3.2 and later Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-07-04dax: bdev_direct_access() may sleepMatthew Wilcox1-0/+6
The brd driver is the only in-tree driver that may sleep currently. After some discussion on linux-fsdevel, we decided that any driver may choose to sleep in its ->direct_access method. To ensure that all callers of bdev_direct_access() are prepared for this, add a call to might_sleep(). Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-07-04block: Add support for DAX reads/writes to block devicesMatthew Wilcox2-2/+8
If a block device supports the ->direct_access methods, bypass the normal DIO path and use DAX to go straight to memcpy() instead of allocating a DIO and a BIO. Includes support for the DIO_SKIP_DIO_COUNT flag in DAX, as is done in do_blockdev_direct_IO(). Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-07-04dax: Use copy_from_iter_nocacheMatthew Wilcox1-1/+1
When userspace does a write, there's no need for the written data to pollute the CPU cache. This matches the original XIP code. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-07-04dax: Add block size note to documentationMatthew Wilcox1-2/+4
For block devices which are small enough, mkfs will default to creating a filesystem with block sizes smaller than page size. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-07-04Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds10-16/+54
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 Jiang1-15/+68
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 Jiang1-8/+16
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 Jiang2-0/+6
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 Jiang1-1/+1
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 Jiang3-465/+465
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 Jiang1-4/+13
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 Jiang1-1/+10
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>