Commit Graph

533089 Commits

Author SHA1 Message Date
Nicolas Boichat f136dce451 ASoC: rt5645: Remove return value in jack detect work
"ASoC: rt5645: Check if codec is initialized in workqueue handler"
adds a check if codec is NULL in rt5645_irq_detection, which
returns an int. However, "ASoC: rt5645: Remove irq_jack_detection
function" removes that function, and moves the code in
jack_detect_work, which returns void.

Remove the return value to fix compilation warning.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-20 18:14:15 +01:00
Mark Brown 2c23b0c10f Merge branch 'fix/rt5645' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-rt5645 2015-07-20 18:14:12 +01:00
Koro Chen 9fc114c5d7 ASoC: rt5645: Add regulator support
This adds basic regulator support for rt5645.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-17 12:16:01 +01:00
Koro Chen 5168c5476a ASoC: rt5645: Fix missing free_irq
The driver does not free irq when snd_soc_register_codec returns error.
It does not return error when request irq failed, either.

Add return when request irq failed, and free_irq if
snd_soc_register_codec failed.

Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-17 12:16:01 +01:00
Nicolas Boichat 582edace0b ASoC: rt5645: Remove unused rt5645 variable
"ASoC: rt5645: Simplify rt5645_enable_push_button_irq" removes
the test that accessed rt5645->pdata.jd_mode (that test is now
done in rt5645_jack_detect only), so we do not need that
variable anymore.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-17 12:16:00 +01:00
Nicolas Boichat f2a5ded385 ASoC: rt5645: Check if codec is initialized in workqueue handler
This fixes kernel panic on boot, if rt5645->codec is NULL when
rt5645_jack_detect_work is first called.

rt5645_jack_detect_work needs rt5645->codec to be initialized to setup
dapm pins. Also, reporting jack events is useless, as the jacks cannot
be set before the codec is ready.

Since we manually call the interrupt handler in
rt5645_set_jack_detect, the initial jack state will be reported
correctly, and dapm pins will be setup at that time.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-17 12:12:20 +01:00
Nicolas Boichat a4e3c5fa95 ASoC: rt5645: Simplify rt5645_enable_push_button_irq
LDO2/Mic Det Power pins are already enabled/disabled in rt5645_jack_detect
(the jack out code path previously did not disable those if button function
is enabled: modify it to make it so).

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 13:10:47 +01:00
Nicolas Boichat b14c917409 ASoC: rt5645: Update dapm pins when the card is not instantiated yet
This makes sure the dapm state is consistent when the card is
instantiated.

However, if the card is not instantiated yet, we still update the
registers manually in the "jack in" case, so that we can immediately
report if a mic is present or not.

Disabling "Mic Det Power" after detection, and on jack out, can
wait until the card gets instantiated.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-16 13:10:46 +01:00
Nicolas Boichat f312bc59d2 ASoC: rt5645: Remove irq_jack_detection function
irq_jack_detection is only called from rt5645_jack_detect_work:
remove the function to simplify the code.

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-14 14:08:06 +01:00
Mark Brown f2a763858a Merge branch 'topic/codec-dapm' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-rt5645
Conflicts:
	sound/soc/codecs/rt5645.c
2015-07-07 15:04:40 +01:00
Lars-Peter Clausen 4890140f38 ASoC: Remove snd_soc_codec dapm field
There are no more direct users of the snd_soc_codec DAPM field left. So we
can finally remove it and switch over to directly using the component DAPM
context and remove the dapm_ptr indirection.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 14:54:32 +01:00
Lars-Peter Clausen b3c25fb7ca ASoC: dapm_widget_show_codec: Use component instead of CODEC
There is nothing snd_soc_codec specific in this function, just use
snd_soc_component instead.

With this also the last reference of snd_soc_codec form soc-dapm.c.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 14:54:31 +01:00
Lars-Peter Clausen c68c2be5f6 ASoC: cht_bsw_max98090_ti: Use card DAPM context to access widgets
The dapm field of the snd_soc_codec struct will eventually be removed
(replaced with the DAPM context from the component embedded inside the
CODEC). Replace its usage with the card's DAPM context. The idea is that
DAPM is hierarchical and with the card at the root it is possible to access
widgets from other contexts through the card context.

While we are at it also remove some extra newlines.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 14:54:31 +01:00
Lars-Peter Clausen 987731bb7c ASoC: omap3pandora: Use card DAPM context to access widgets
The dapm field of the snd_soc_codec struct will eventually be removed
(replaced with the DAPM context from the component embedded inside the
CODEC). Replace its usage with the card's DAPM context. The idea is that
DAPM is hierarchical and with the card at the root it is possible to access
widgets from other contexts through the card context.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 14:54:31 +01:00
Lars-Peter Clausen 8f218fa93d ASoC: tas571x: Replace direct snd_soc_codec dapm field access
The dapm field of the snd_soc_codec struct is eventually going to be
removed, in preparation for this replace all manual access to
codec->dapm.bias_level with snd_soc_codec_get_bias_level().

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Kevin Cernekee <cernekee@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 14:54:27 +01:00
Lars-Peter Clausen e2ada8187b ASoC: rt5645: Replace direct snd_soc_codec dapm field access
The dapm field of the snd_soc_codec struct is eventually going to be
removed, in preparation for this replace all manual access to
codec->dapm.bias_level with snd_soc_codec_get_bias_level() and replace all
other manual access to codec->dapm with snd_soc_codec_get_dapm().

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 14:54:14 +01:00
Bard Liao 83c09290ad ASoC: rt5645: move RT5645 muxes to rt5645_specific_dapm_widgets
This is a similar patch to "move RT5650 muxes to rt5650_specific_
dapm_widgets" patch. The purpose is to silence the "has no paths"
warnings.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-07 13:08:50 +01:00
Axel Lin 0bc7d10c4a ASoC: rt5645: Constify dmi_system_id table
dmi_check_system() takes "const struct dmi_system_id *", so make the
dmi_system_id table const.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-06 21:42:53 +01:00
Jarkko Nikula 8f68e80f5f ASoC: rt5645: Prefix hexadecimal ID register value with 0x in error print
Make it obvious that unexpected value read from ID register is printed in
hexadecimal.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-07-06 20:30:02 +01:00
Linus Torvalds d770e558e2 Linux 4.2-rc1 2015-07-05 11:01:52 -07:00
Linus Torvalds a585d2b738 platform-drivers-x86 for 4.2-2
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
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Merge tag 'platform-drivers-x86-v4.2-2' of 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
2015-07-05 10:54:09 -07:00
Linus Torvalds 1dc51b8288 Merge branch 'for-linus' of 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
  ...
2015-07-04 19:36:06 -07:00
Linus Torvalds 9b284cbdb5 bluetooth: fix list handling
Commit 835a6a2f86 ("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>
2015-07-04 19:11:33 -07:00
Linus Torvalds 5c755fe142 Merge branch 'for-next' of 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
  ...
2015-07-04 14:13:43 -07:00
Linus Torvalds 6d7c8e1b3a A very significant modification to NTB in this series.
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.
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Merge tag 'ntb-4.2' of git://github.com/jonmason/ntb

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
  ...
2015-07-04 14:07:47 -07:00
Al Viro 0f1db7dee2 9p: cope with bogus responses from server in p9_client_{read,write}
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.
2015-07-04 16:17:39 -04:00
Al Viro 67e808fbb0 p9_client_write(): avoid double p9_free_req()
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>
2015-07-04 16:11:05 -04:00
Al Viro a84b69cb6e 9p: forgetting to cancel request on interrupted zero-copy RPC
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>
2015-07-04 16:04:19 -04:00
Matthew Wilcox 43c3dd08da dax: bdev_direct_access() may sleep
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>
2015-07-04 15:56:57 -04:00
Matthew Wilcox bbab37ddc2 block: Add support for DAX reads/writes to block devices
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>
2015-07-04 15:56:57 -04:00
Matthew Wilcox 872eb127e3 dax: Use copy_from_iter_nocache
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>
2015-07-04 15:56:56 -04:00
Matthew Wilcox 44f4c054ca dax: Add block size note to documentation
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>
2015-07-04 15:56:56 -04:00
Linus Torvalds 1b3618b60a 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.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

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
2015-07-04 11:29:59 -07:00
Dave Jiang bf44fe4671 NTB: Add split BAR output for debugfs stats
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>
2015-07-04 14:09:32 -04:00
Dave Jiang fd839bf884 NTB: Change WARN_ON_ONCE to pr_warn_once on unsafe
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>
2015-07-04 14:09:30 -04:00
Dave Jiang 7eb387813d NTB: Print driver name and version in module init
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>
2015-07-04 14:09:28 -04:00
Dave Jiang 9891417de8 NTB: Increase transport MTU to 64k from 16k
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>
2015-07-04 14:09:27 -04:00
Dave Jiang 2f887b9a44 NTB: Rename Intel code names to platform names
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>
2015-07-04 14:09:25 -04:00
Dave Jiang a41ef053f7 NTB: Default to CPU memcpy for performance
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>
2015-07-04 14:09:24 -04:00
Dave Jiang 06917f7535 NTB: Improve performance with write combining
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>
2015-07-04 14:09:21 -04:00
Allen Hubbe 0e041fb536 NTB: Use NUMA memory in Intel driver
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>
2015-07-04 14:09:19 -04:00
Allen Hubbe 1199aa6126 NTB: Use NUMA memory and DMA chan in transport
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>
2015-07-04 14:08:33 -04:00
Allen Hubbe 2876228941 NTB: Rate limit ntb_qp_link_work
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>
2015-07-04 14:08:30 -04:00
Allen Hubbe 578b881ba9 NTB: Add tool test client
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>
2015-07-04 14:08:17 -04:00
Allen Hubbe 963de4739f NTB: Add ping pong test client
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>
2015-07-04 14:07:42 -04:00
Allen Hubbe 42fefc86a6 NTB: Add parameters for Intel SNB B2B addresses
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>
2015-07-04 14:06:40 -04:00
Allen Hubbe 2849b5d706 NTB: Reset transport QP link stats on down
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>
2015-07-04 14:06:34 -04:00
Allen Hubbe c0900b33d1 NTB: Do not advance transport RX on link down
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>
2015-07-04 14:06:24 -04:00
Allen Hubbe e22e0b9dcf NTB: Differentiate transport link down messages
The same message "qp %d: Link Down\n" was printed at two locations in
ntb_transport.  Change the messages so they are distinct.

Signed-off-by: Allen Hubbe <Allen.Hubbe@emc.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04 14:06:19 -04:00
Dave Jiang dd5d4d8edb NTB: Check the device ID to set errata flags
Set errata flags for the specific device IDs to which they apply,
instead of the whole Xeon hardware class.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2015-07-04 14:06:14 -04:00