xgmac_desc_get_buf_len appears to have a copy/paste error. flags is the
wrong field to read. We should be reading buf_size field. cpu_to_le32
should also be le32_to_cpu. This never really mattered as this function
is only used for DMA mapping calls which happen to be nops with coherent
DMA.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The xgmac does not actually handle frag lists, so this option should not
be set. It does not appear to have had any impact though.
Reported-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
SkyHawk-R can support VEB or VEPA mode.
This patch will allow the user to set/query this switch setting.
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The name of the function in the comment is __skb_alloc_page() while we
are actually commenting __skb_alloc_pages(). Fix this typo and make it
a valid kernel doc comment.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This two-liner removes max_addresses variable which is now unecessary related
to patch [ipv6: remove max_addresses check from ipv6_create_tempaddr].
Signed-off-by: Petr Holasek <pholasek@redhat.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix the amount of sent bytes reported to BQL by reporting the
number of bytes on wire in the xmit routine, and recording that
value for each skb in order to be correctly confirmed on Tx
confirmation cleanup.
Reporting skb->len to BQL just before exiting xmit is not correct
due to possible insertions of TOE block and alignment bytes in the
skb->data, which are being stripped off by the controller before
transmission on wire. This led to mismatch of (incorrectly)
reported bytes to BQL b/w xmit and Tx confirmation, resulting in
Tx timeout firing, for the h/w tx timestamping acceleration case.
There's no easy way to obtain the number of bytes on wire in the Tx
confirmation routine, so skb->cb is used to convey that information
from xmit to Tx confirmation, for now (as proposed by Eric). Revived
the currently unused GFAR_CB() construct for that purpose.
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
RFC 4443 has defined two additional codes for ICMPv6 type 1 (destination
unreachable) messages:
5 - Source address failed ingress/egress policy
6 - Reject route to destination
Now they are treated as protocol error and icmpv6_err_convert() converts them
to EPROTO.
RFC 4443 says:
"Codes 5 and 6 are more informative subsets of code 1."
Treat codes 5 and 6 as code 1 (EACCES)
Btw, connect() returning -EPROTO confuses firefox, so that fallback to
other/IPv4 addresses does not work:
https://bugzilla.mozilla.org/show_bug.cgi?id=910773
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We're using it currently to verify if we have vlans before getting the tag
from the skb we're about to send. It's useless because the vlan_get_tag()
verifies if the skb has the tag (and returns an error if not), and we can
receive tagged skbs only if we *already* have vlans.
Plus, the current RCUed implementation is kind of useless anyway - the we
can remove the last vlan in the moment we return from the function.
So remove the only usage of it and the whole function.
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marc Kleine-Budde says:
====================
this is a pull request for net-next. There are two patches from Gerhard
Sittig, which improves the clock handling on mpc5121. Oliver Hartkopp
provides a patch that adds a per rule limitation of frame hops.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
John W. Linville says:
====================
Please accept this batch of updates intended for the 3.12 stream.
For the mac80211 bits, Johannes says this:
"This time I have various improvements all over the place: IBSS, mesh,
testmode, AP client powersave handling, one of the rare rfkill patches
and some code cleanup."
Also for mac80211:
"And I also have some more changes for -next, just a few small fixes and
improvements, nothing really stands out."
And for iwlwifi:
"This time I have some powersave work (notably uAPSD support), CQM
offloads, support for a new firmware API and various code cleanups."
Regarding the Bluetooth bits, Gustavo says:
"Patches to 3.12, here we have:
* implementation of a proper tty_port for RFCOMM devices, this fixes some
issues people were seeing lately in the kernel.
* Add voice_setting option for SCO, it is used for SCO Codec selection
* bugfixes, small improvements and clean ups"
For the NFC bits, Samuel says:
"With this one we have:
- A few pn533 improvements and minor fixes. Testing our pn533 driver
against Google's NCI stack triggered a few issues that we fixed now.
We also added Tx fragmentation support to this driver.
- More NFC secure element handling. We added a GET_SE netlink command
for getting all the discovered secure elements, and we defined 2
additional secure element netlink event (transaction and connectivity).
We also fixed a couple of typos and copy-paste bugs from the secure
element handling code.
- Firmware download support for the pn544 driver. This chipset can enter a
special mode where it's waiting for firmware blobs to replace the
already flashed one. We now support that mode."
With repect to the ath tree, Kalle says:
"New features in ath10k are rx/tx checsumming in hw and survey scan
implemented by Michal. Also he made fixes to different areas of the
driver, most notable being fixing the case when using two streams and
reducing the number of interface combinations to avoid firmware crashes.
Bartosz did a clean related to how we handle SoC power save in PCI
layer.
For ath6kl Mohammed and Vasanth sent each a patch to fix two infrequent
crashes."
I also pulled the wireless tree into wireless-next to support a
request from Johannes. On top of all that, there are the usual
sort of driver updates. The mwifiex, brcmfmac, brcmsmac, ath9k,
and rt2x00 drivers all get some attention, as does the bcma bus and
a few other random bits here and there.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This is a follow-up commit for commit b1dcdc68b1 ("net: tcp_probe:
allow more advanced ingress filtering by mark") that allows for
advanced SCTP probe module filtering based on skb mark (for a more
detailed description and advantages using mark, refer to b1dcdc68b1).
The current option to filter by a given port is still being preserved.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If the VIRTIO_NET_F_GUEST_CSUM virtio feature is available, the guest
does not have to calculate the checksums on all received packets. This
is pretty much the same feature as RX checksum offloading on real
network cards, so the virtio-net driver should report this by setting
the NETIF_F_RXCSUM flag. When the user now runs "ethtool -k", he or she
can see whether the virtio-net interface has to calculate RX checksums
or not.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull cgroup updates from Tejun Heo:
"A lot of activities on the cgroup front. Most changes aren't visible
to userland at all at this point and are laying foundation for the
planned unified hierarchy.
- The biggest change is decoupling the lifetime management of css
(cgroup_subsys_state) from that of cgroup's. Because controllers
(cpu, memory, block and so on) will need to be dynamically enabled
and disabled, css which is the association point between a cgroup
and a controller may come and go dynamically across the lifetime of
a cgroup. Till now, css's were created when the associated cgroup
was created and stayed till the cgroup got destroyed.
Assumptions around this tight coupling permeated through cgroup
core and controllers. These assumptions are gradually removed,
which consists bulk of patches, and css destruction path is
completely decoupled from cgroup destruction path. Note that
decoupling of creation path is relatively easy on top of these
changes and the patchset is pending for the next window.
- cgroup has its own event mechanism cgroup.event_control, which is
only used by memcg. It is overly complex trying to achieve high
flexibility whose benefits seem dubious at best. Going forward,
new events will simply generate file modified event and the
existing mechanism is being made specific to memcg. This pull
request contains prepatory patches for such change.
- Various fixes and cleanups"
Fixed up conflict in kernel/cgroup.c as per Tejun.
* 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (69 commits)
cgroup: fix cgroup_css() invocation in css_from_id()
cgroup: make cgroup_write_event_control() use css_from_dir() instead of __d_cgrp()
cgroup: make cgroup_event hold onto cgroup_subsys_state instead of cgroup
cgroup: implement CFTYPE_NO_PREFIX
cgroup: make cgroup_css() take cgroup_subsys * instead and allow NULL subsys
cgroup: rename cgroup_css_from_dir() to css_from_dir() and update its syntax
cgroup: fix cgroup_write_event_control()
cgroup: fix subsystem file accesses on the root cgroup
cgroup: change cgroup_from_id() to css_from_id()
cgroup: use css_get() in cgroup_create() to check CSS_ROOT
cpuset: remove an unncessary forward declaration
cgroup: RCU protect each cgroup_subsys_state release
cgroup: move subsys file removal to kill_css()
cgroup: factor out kill_css()
cgroup: decouple cgroup_subsys_state destruction from cgroup destruction
cgroup: replace cgroup->css_kill_cnt with ->nr_css
cgroup: bounce cgroup_subsys_state ref kill confirmation to a work item
cgroup: move cgroup->subsys[] assignment to online_css()
cgroup: reorganize css init / exit paths
cgroup: add __rcu modifier to cgroup->subsys[]
...
Pull libata changes from Tejun Heo:
"Two interesting changes.
- libata acpi handling has been restructured so that the association
between ata devices and ACPI handles are less convoluted. This
change shouldn't change visible behavior.
- Queued TRIM support, which enables sending TRIM to the device
without draining in-flight RW commands, is added. Currently only
enabled for ahci (and likely to stay that way for the foreseeable
future).
Other changes are driver-specific updates / fixes"
* 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
libata: bugfix: Remove __le32 in ata_tf_to_fis()
libata: acpi: Remove ata_dev_acpi_handle stub in libata.h
libata: Add support for queued DSM TRIM
libata: Add support for SEND/RECEIVE FPDMA QUEUED
libata: Add H2D FIS "auxiliary" port flag
libata: Populate host-to-device FIS "auxiliary" field
ata: acpi: rework the ata acpi bind support
sata, highbank: send extra clock cycles in SGPIO patterns
sata, highbank: set tx_atten override bits
devicetree: create a separate binding description for sata_highbank
drivers/ata/sata_rcar.c: simplify use of devm_ioremap_resource
sata highbank: enable 64-bit DMA mask when using LPAE
ata: pata_samsung_cf: add missing __iomem annotation
ata: pata_arasan: Staticize local symbols
sata_mv: Remove unneeded CONFIG_HAVE_CLK ifdefs
ata: use dev_get_platdata()
sata_mv: Remove unneeded forward declaration
libata: acpi: remove dead code for ata_acpi_(un)bind
libata: move 'struct ata_taskfile' and friends from ata.h to libata.h
Pull workqueue updates from Tejun Heo:
"Nothing interesting. All are doc / comment updates"
* 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Correct/Drop references to gcwq in Documentation
workqueue: Fix manage_workers() RETURNS description
workqueue: Comment correction in file header
workqueue: mark WQ_NON_REENTRANT deprecated
Pull single percpu update from Tejun Heo:
"Just a single patch to update type verification macro for percpu
accessors.
Christoph is trying to replace __get_cpu_var() with this_cpu accessors
which needs this update. There are still some issues to be resolved
but eventually the conversion patches are likely to be routed through
different trees, so I think it'd be convenient to merge this commit
early"
* 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: Make __verify_pcu_ptr handle per cpu pointers to arrays
Bjørn Mork says:
====================
net: set addr_assign_type when inheriting a dev_addr
Copying the dev_addr from a parent device is an operation
common to a number of drivers. The addr_assign_type should
be updated accordingly, either by reusing the value from
the source device or explicitly indicating that the address
is stolen by setting addr_assign_type to NET_ADDR_STOLEN.
This patch set adds a helper copying both the dev_addr and
the addr_assign_type, and use this helper in drivers which
don't currently set the addr_assign_type. Using NET_ADDR_STOLEN
might be more appropriate in some of these cases. Please
let me know, and I'll update the patch accordingly.
Changes in v2:
- assuming addr_len == ETH_ALEN to allow optimized memcpy
- dropped the vt6656 patch due to addr_len being unset in that driver
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Cc: Jouni Malinen <j@w1.fi>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
A device inheriting a random or set address should reflect this in
its addr_assign_type.
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some etherdevices inherit their address from a parent or
master device. The addr_assign_type should be updated along
with the address in these cases. Adding a helper function
to simplify this.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
There's a slight race when going from a list function to a non list
function. That is, when only one callback is registered to the function
tracer, it gets called directly by the mcount trampoline. But if this
function has filters, it may be called by the wrong functions.
As the list ops callback that handles multiple callbacks that are
registered to ftrace, it also handles what functions they call. While
the transaction is taking place, use the list function always, and
after all the updates are finished (only the functions that should be
traced are being traced), then we can update the trampoline to call
the function directly.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
drm/tegra: Changes for v3.12-rc1
Only a couple of small patches this time around. These are mostly fixes
for minor bugs that showed up, but there is also some preparatory work
that will come in handy for future patches.
* tag 'drm/for-3.12-rc1' of git://anongit.freedesktop.org/tegra/linux:
drm/tegra: Parse device tree earlier
gpu: host1x: Sort drivers by probe order
gpu: host1x: Check for valid host1x pointer
gpu: host1x: returning success instead of -ENOMEM
gpu: host1x: fix an integer overflow check
drm/tegra: hdmi: Make sure clock is enabled before dumping registers
Pull ACPI and power management updates from Rafael Wysocki:
1) ACPI-based PCI hotplug (ACPIPHP) subsystem rework and introduction
of Intel Thunderbolt support on systems that use ACPI for signalling
Thunderbolt hotplug events. This also should make ACPIPHP work in
some cases in which it was known to have problems. From
Rafael J Wysocki, Mika Westerberg and Kirill A Shutemov.
2) ACPI core code cleanups and dock station support cleanups from
Jiang Liu and Rafael J Wysocki.
3) Fixes for locking problems related to ACPI device hotplug from
Rafael J Wysocki.
4) ACPICA update to version 20130725 includig fixes, cleanups, support
for more than 256 GPEs per GPE block and a change to make the ACPI
PM Timer optional (we've seen systems without the PM Timer in the
field already). One of the fixes, related to the DeRefOf operator,
is necessary to prevent some Windows 8 oriented AML from causing
problems to happen. From Bob Moore, Lv Zheng, and Jung-uk Kim.
5) Removal of the old and long deprecated /proc/acpi/event interface
and related driver changes from Thomas Renninger.
6) ACPI and Xen changes to make the reduced hardware sleep work with
the latter from Ben Guthro.
7) ACPI video driver cleanups and a blacklist of systems that should
not tell the BIOS that they are compatible with Windows 8 (or ACPI
backlight and possibly other things will not work on them). From
Felipe Contreras.
8) Assorted ACPI fixes and cleanups from Aaron Lu, Hanjun Guo,
Kuppuswamy Sathyanarayanan, Lan Tianyu, Sachin Kamat, Tang Chen,
Toshi Kani, and Wei Yongjun.
9) cpufreq ondemand governor target frequency selection change to
reduce oscillations between min and max frequencies (essentially,
it causes the governor to choose target frequencies proportional
to load) from Stratos Karafotis.
10) cpufreq fixes allowing sysfs attributes file permissions to be
preserved over suspend/resume cycles Srivatsa S Bhat.
11) Removal of Device Tree parsing for CPU device nodes from multiple
cpufreq drivers that required some changes related to
of_get_cpu_node() to be made in a few architectures and in the
driver core. From Sudeep KarkadaNagesha.
12) cpufreq core fixes and cleanups related to mutual exclusion and
driver module references from Viresh Kumar, Lukasz Majewski and
Rafael J Wysocki.
13) Assorted cpufreq fixes and cleanups from Amit Daniel Kachhap,
Bartlomiej Zolnierkiewicz, Hanjun Guo, Jingoo Han, Joseph Lo,
Julia Lawall, Li Zhong, Mark Brown, Sascha Hauer, Stephen Boyd,
Stratos Karafotis, and Viresh Kumar.
14) Fixes to prevent race conditions in coupled cpuidle from happening
from Colin Cross.
15) cpuidle core fixes and cleanups from Daniel Lezcano and
Tuukka Tikkanen.
16) Assorted cpuidle fixes and cleanups from Daniel Lezcano,
Geert Uytterhoeven, Jingoo Han, Julia Lawall, Linus Walleij,
and Sahara.
17) System sleep tracing changes from Todd E Brandt and Shuah Khan.
18) PNP subsystem conversion to using struct dev_pm_ops for power
management from Shuah Khan.
* tag 'pm+acpi-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (217 commits)
cpufreq: Don't use smp_processor_id() in preemptible context
cpuidle: coupled: fix race condition between pokes and safe state
cpuidle: coupled: abort idle if pokes are pending
cpuidle: coupled: disable interrupts after entering safe state
ACPI / hotplug: Remove containers synchronously
driver core / ACPI: Avoid device hot remove locking issues
cpufreq: governor: Fix typos in comments
cpufreq: governors: Remove duplicate check of target freq in supported range
cpufreq: Fix timer/workqueue corruption due to double queueing
ACPI / EC: Add ASUSTEK L4R to quirk list in order to validate ECDT
ACPI / thermal: Add check of "_TZD" availability and evaluating result
cpufreq: imx6q: Fix clock enable balance
ACPI: blacklist win8 OSI for buggy laptops
cpufreq: tegra: fix the wrong clock name
cpuidle: Change struct menu_device field types
cpuidle: Add a comment warning about possible overflow
cpuidle: Fix variable domains in get_typical_interval()
cpuidle: Fix menu_device->intervals type
cpuidle: CodingStyle: Break up multiple assignments on single line
cpuidle: Check called function parameter in get_typical_interval()
...
Pull SCSI target fixes from Nicholas Bellinger:
"The first patch is to address a long standing issue where INQUIRY
vendor + model response data was not correctly padded with ASCII
spaces, causing MSFT and Falconstor multipath stacks to not function
with our LUNs.
The second -> forth patches are additional iscsi-target regression
fixes for the post >= v3.10 iser-target changes. The second and third
are failure cases that have appeared during further testing, and the
forth is only reproducible with malformed NOP packets.
The fifth patch is a v3.11 specific regression caused by a recent
optimization that showed up during WRITE I/O failure testing.
I'll be sending Patch #1 and Patch #5 to Greg-KH separately for
stable"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Fix se_cmd->state_list leak regression during WRITE failure
iscsi-target: Fix potential NULL pointer in solicited NOPOUT reject
iscsi-target: Fix iscsit_transport reference leak during NP thread reset
iscsi-target: Fix ImmediateData=Yes failure regression in >= v3.10
target: Fix trailing ASCII space usage in INQUIRY vendor+model
Pull first round of SCSI updates from James Bottomley:
"This patch set is a set of driver updates (ufs, zfcp, lpfc, mpt2/3sas,
qla4xxx, qla2xxx [adding support for ISP8044 + other things]).
We also have a new driver: esas2r which has a number of static checker
problems, but which I expect to resolve over the -rc course of 3.12
under the new driver exception.
We also have the error return that were discussed at LSF"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (118 commits)
[SCSI] sg: push file descriptor list locking down to per-device locking
[SCSI] sg: checking sdp->detached isn't protected when open
[SCSI] sg: no need sg_open_exclusive_lock
[SCSI] sg: use rwsem to solve race during exclusive open
[SCSI] scsi_debug: fix logical block provisioning support when unmap_alignment != 0
[SCSI] scsi_debug: fix endianness bug in sdebug_build_parts()
[SCSI] qla2xxx: Update the driver version to 8.06.00.08-k.
[SCSI] qla2xxx: print MAC via %pMR.
[SCSI] qla2xxx: Correction to message ids.
[SCSI] qla2xxx: Correctly print out/in mailbox registers.
[SCSI] qla2xxx: Add a new interface to update versions.
[SCSI] qla2xxx: Move queue depth ramp down message to i/o debug level.
[SCSI] qla2xxx: Select link initialization option bits from current operating mode.
[SCSI] qla2xxx: Add loopback IDC-TIME-EXTEND aen handling support.
[SCSI] qla2xxx: Set default critical temperature value in cases when ISPFX00 firmware doesn't provide it
[SCSI] qla2xxx: QLAFX00 make over temperature AEN handling informational, add log for normal temperature AEN
[SCSI] qla2xxx: Correct Interrupt Register offset for ISPFX00
[SCSI] qla2xxx: Remove handling of Shutdown Requested AEN from qlafx00_process_aen().
[SCSI] qla2xxx: Send all AENs for ISPFx00 to above layers.
[SCSI] qla2xxx: Add changes in initialization for ISPFX00 cards with BIOS
...
While we are likley to succeed and break out of this loop, it isn't
guaranteed. We should be power and thread friendly if we do have to
go around for a second (or third, or more) attempt.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Correct the issues on NTB that prevented it from working on x86_32 and
modify the Kconfig to allow it to be permitted to be used in that
environment as well.
Signed-off-by: Jon Mason <jon.mason@intel.com>
Add support for new Intel NTB devices on upcoming Xeon hardware. Since
the Xeon hardware design is already in place in the driver, all that is
needed are the new device ids.
Remove the device IDs for NTB devs running in Transparent Bridge mode,
as this driver is not being used for those devices.
Rename the device IDs for NTB devs running in NTB-RP mode to better
identify their usage model. "PS" to denote the Primary Side of NTB, and
"SS" to denote the secondary side. The primary side is the interface
exposed to the local system, and the secondary side is the interface
exposed to the remote system.
Signed-off-by: Jon Mason <jon.mason@intel.com>
The BWD NTB device will drop the link if an error is encountered on the
point-to-point PCI bridge. The link will stay down until all errors are
cleared and the link is re-established. On link down, check to see if
the error is detected, if so do the necessary housekeeping to try and
recover from the error and reestablish the link.
There is a potential race between the 2 NTB devices recovering at the
same time. If the times are synchronized, the link will not recover and the
driver will be stuck in this loop forever. Add a random interval to the
recovery time to prevent this race.
Signed-off-by: Jon Mason <jon.mason@intel.com>
Decrement the number of queues required for doorbell remapping until
the memory is successfully mapped for that size.
Additional checks are done so that we don't call free_irq if it has
already been freed.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Used for going in and out of low power states. Resuming reuses the IO
queues from the previous initialization, freeing any allocated queues
that are no longer usable.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
The __clk_get_flags() symbol is exported immediately following the
clk_unprepare_unused_subtree() function. This is unusual, since a symbol
export typically follows body of the function that it exports.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
The NVMe spec recommends using the shutdown normal sequence when safely
taking the controller offline instead of hitting CC.EN on the next
start-up to reset the controller. The spec recommends a minimum of 1
second for the shutdown complete. This patch waits 2 seconds to be on
the safe side.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This combines the controller initialization into one function, removing
IO queue setup from namespace discovery, and creates symetric functions
for device removal. The controller start and shutdown functions can now
be called from resume/suspend context as well as probe/remove.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
This separates nvme queue allocation from creation, and queue deletion
from freeing. This is so that we may in the future temporarily disable
queues and reuse the same memory when bringing them back online, like
coming back from suspend state.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
