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9 years agoiwlwifi: mvm: treat scan races also on UMAC scans
Luciano Coelho [Thu, 7 May 2015 14:21:09 +0000 (17:21 +0300)]
iwlwifi: mvm: treat scan races also on UMAC scans

For UMAC, we were not treating a race condition that happens in the
scan flows, because it was not using the same state flags.  Now that
UMAC and LMAC scans use the same state flags, we can also handle the
race conditions for UMAC.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: make UMAC scans use the stopping scan status
Luciano Coelho [Thu, 7 May 2015 14:05:30 +0000 (17:05 +0300)]
iwlwifi: mvm: make UMAC scans use the stopping scan status

UMAC scans now use the general scan status for almost everything, the
only part missing was in the scan complete notifications.  Change it
to use the stopping flags instead of clearing the flags when the stop
comes from above and clean the handler function a bit.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine regular and sched scan stop functions
Luciano Coelho [Thu, 7 May 2015 13:00:26 +0000 (16:00 +0300)]
iwlwifi: mvm: combine regular and sched scan stop functions

The regular and scheduled scan functions are very similar, so they can
be combined into one.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: tracing: add rx cmd header fields
Eliad Peller [Mon, 11 May 2015 12:51:22 +0000 (15:51 +0300)]
iwlwifi: tracing: add rx cmd header fields

Having explicit rx cmd header fields is useful, as it can
be used for event filtering (e.g. saving only debug logs,
rather than the whole data)

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: Remove redundant check for family type
Avri Altman [Thu, 14 May 2015 04:55:32 +0000 (07:55 +0300)]
iwlwifi: pcie: Remove redundant check for family type

This check for family type is redundant as the if clause above
checks a family-dependent Boolean (which is not set for family 8000 anyway).

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine UMAC and LMAC scan_stop functions
Luciano Coelho [Thu, 7 May 2015 12:23:19 +0000 (15:23 +0300)]
iwlwifi: mvm: combine UMAC and LMAC scan_stop functions

The UMAC and LMAC scan_stop functions are now nearly identical, so
they can be combined into a single function instead.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: remove code that stops multiple UMAC scans of a type
Luciano Coelho [Thu, 7 May 2015 11:41:44 +0000 (14:41 +0300)]
iwlwifi: mvm: remove code that stops multiple UMAC scans of a type

We can only have one scan per type at the same time, so the code that
tries to stop several scans of a type is unnecessary.  Remove that to
reduce code complexity.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: refactor UMAC scan UID handling
Luciano Coelho [Thu, 7 May 2015 08:13:24 +0000 (11:13 +0300)]
iwlwifi: mvm: refactor UMAC scan UID handling

We can only have one scan of each type running at the same time, so we
can remove one attribute in the UID information we save.  We had array
index, UID and type, but only UID (== array_index) and type are
necessary.  Refactor the code to use this simplified array.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add support for 8 level scan priority API
Avraham Stern [Tue, 12 May 2015 09:19:48 +0000 (12:19 +0300)]
iwlwifi: mvm: add support for 8 level scan priority API

Add support for scan priority API with 8 levels instead of the
existing 3 levels. This API is needed to define the priority of
new ooc activities, e.g. gscan.
Add a TLV flag to indicate if the new API is supported so that
devices that does not support the new API will continue to use
the old one.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: rename some LMAC-specific scan functions
Luciano Coelho [Wed, 6 May 2015 13:03:39 +0000 (16:03 +0300)]
iwlwifi: mvm: rename some LMAC-specific scan functions

Some LMAC specific functions had too generic names
(i.e. *_scan_offload_*) and were hard to distinguish from functions
that are really generic.  Rename these functions to *_lmac_scan_* in
to make it more consistent and easier to read.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: rename umac scan stop function
Luciano Coelho [Tue, 5 May 2015 08:21:34 +0000 (11:21 +0300)]
iwlwifi: mvm: rename umac scan stop function

For consistency with the LMAC functions, rename the UMAC scan stop
function to iwl_mvm_umac_scan_stop().  Additionally, move things
around a bit to avoid an unnecessary forward declaration.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine part of the scan stop flows
Luciano Coelho [Tue, 5 May 2015 07:05:42 +0000 (10:05 +0300)]
iwlwifi: mvm: combine part of the scan stop flows

For UMAC scans, we were simply jumping into another function when scan
stop functions were called, while for LMAC scans, the flow continued.
To make the flows cleaner and more balanced, combine the UMAC part
into the main stop functions.  This also makes us take one step closer
into combining the state flags for both APIs.

Note that some STOPPING flags will be dangling in UMAC scans, but it
doesn't matter because they are not used in UMAC yet (and this will be
fixed in subsequent patches).

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: don't stop regular scans when going out of idle state
Luciano Coelho [Tue, 12 May 2015 06:30:36 +0000 (09:30 +0300)]
iwlwifi: mvm: don't stop regular scans when going out of idle state

It is not necessary to stop regular scans when going out of idle
state.  Previously, we were doing so for LMAC scans because the
iwl_mvm_scan_offload_stop() function was stopping both kinds of scans.
Now that we have more granularity, we can skip it.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: reorganize scan stopping functions
Luciano Coelho [Tue, 21 Apr 2015 10:34:10 +0000 (13:34 +0300)]
iwlwifi: mvm: reorganize scan stopping functions

The iwl_mvm_scan_offload_stop() function is used to stop LMAC regular
scan, stop LMAC scheduled scan and stop UMAC scheduled scans (but not
UMAC regular scans), making it very difficult to read.

Reorganize the scan stopping functions by creating separate functions
to stop regular and scheduled scans, separating the LMAC stopping part
of the code from the rest and renaming the offload_stop function to
iwl_mvm_lmac_scan_stop().

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: BT Coex - fix shared antenna check with new API
Emmanuel Grumbach [Sat, 16 May 2015 19:47:56 +0000 (22:47 +0300)]
iwlwifi: mvm: BT Coex - fix shared antenna check with new API

The commit below fixed this for the old firmware API only.
Since the new firmware API hasn't been released yet, this
doesn't fix anything on currently existing firmwares.
This completes:

commit afcee962b09842d0f4191beb4a2d08251b4c7705
Author: Eyal Shapira <eyal@wizery.com>
Date:   Mon Feb 9 15:18:17 2015 +0200

    iwlwifi: mvm: fix BT coex shared antenna activity check

type=bugfix
bug=not-tracked
fixes=unknown

Reviewed-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: make iwl_mvm_config_sched_scan_profiles() static
Luciano Coelho [Tue, 5 May 2015 08:32:29 +0000 (11:32 +0300)]
iwlwifi: mvm: make iwl_mvm_config_sched_scan_profiles() static

The iwl_mvm_config_sched_scan_profiles() function is only used in
scan.c, so remove the declaration from mvm.h and make it static.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: fix the net-detect SSIDs report order
Luciano Coelho [Wed, 6 May 2015 07:45:42 +0000 (10:45 +0300)]
iwlwifi: mvm: fix the net-detect SSIDs report order

After the scan refactor, the order of the SSIDs passed to the firmware
in all scans (including net-detect) are inverted.  This was causing
the reporting code to use the wrong SSIDs.  To fix this, invert the
array index when accessing the saved match SSIDs to report the
wake-up.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add UMAC scan iteration complete notification
Avraham Stern [Mon, 23 Mar 2015 13:09:27 +0000 (15:09 +0200)]
iwlwifi: mvm: add UMAC scan iteration complete notification

Add UMAC scan iteration complete notification. This notification can
be enabled by setting scan_iter_notif_enabled through debugfs.
Upon receiving this notification, print the list of channels that
have been scanned in this iteration. This is useful for debugging.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: print scanned channel list on scan iteration complete notification
Avraham Stern [Tue, 31 Mar 2015 13:22:33 +0000 (16:22 +0300)]
iwlwifi: mvm: print scanned channel list on scan iteration complete notification

When receiving scan iteration complete notification, print a list of
the channels that have been scanned in this iteration.
This is useful for debugging.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: BT Coex - allocate a short command on the stack
Emmanuel Grumbach [Mon, 11 May 2015 06:05:25 +0000 (09:05 +0300)]
iwlwifi: mvm: BT Coex - allocate a short command on the stack

The BT_CONFIG command used to be very long, hence it was
allocated on the heap in the previous API. In the new API,
this command is much smaller, and can now safely be
allocated on the stack.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: BT Coex - remove useless code
Emmanuel Grumbach [Sun, 10 May 2015 15:50:37 +0000 (18:50 +0300)]
iwlwifi: mvm: BT Coex - remove useless code

Since we don't need to configure the Ack / CTS kill mask
anymore in the new API, we don't need to iterate all the
interfaces upon rssi event on one of the interfaces.
Remove that code.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: remove the UMAC specific scan types
Luciano Coelho [Thu, 7 May 2015 07:10:57 +0000 (10:10 +0300)]
iwlwifi: mvm: remove the UMAC specific scan types

There is no need to have separate definitions for the UMAC scan types,
since they are the same as the LMAC types.  Remove UMAC scan types and
use the generic ones instead.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: Configure agg. queue before assigning it to STA
Andrei Otcheretianski [Tue, 5 May 2015 06:28:16 +0000 (09:28 +0300)]
iwlwifi: mvm: Configure agg. queue before assigning it to STA

In order to imeplement the extended VI session feature for Miracast, the FW
requires to detect the VI queue. The detection of the VI queue is done when
it is assigned to a STA with ADD_STA command, so by this time the FW expects
the queue to be already configured (mapped to VI AC and aggregation enabled).
Previously, the queue configuration was done after STA modificaton which
broke the extended VI session feature and resulted in higher latencies.
Fix this by calling iwl_mvm_enable_agg_txq before station modification.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: handle device start failure correctly
Johannes Berg [Thu, 7 May 2015 12:47:50 +0000 (14:47 +0200)]
iwlwifi: mvm: handle device start failure correctly

If the device fails to start correctly prior to loading the
regular runtime firmware (after having run the INIT firmware),
treat that error correctly by actually checking the return
value of _iwl_trans_start_hw() and stopping the device again
before returning an error.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: advertise randomised netdetect MAC address
Johannes Berg [Wed, 6 May 2015 12:56:51 +0000 (14:56 +0200)]
iwlwifi: mvm: advertise randomised netdetect MAC address

According to the nl80211 documentation, we can neither advertise
scheduled scan nor netdetect address randomisation. However, all
the products that currently require this don't have a need for
the full randomisation.

Therefore, advertise the feature anyway which results in host-
based randomisation, done whenever the system suspends. This is
sufficient for the platforms currently requiring this feature.

If we ever extend this in the future to do full randomisation in
the firmware, then certainly this will still be sufficient for
the current requirements, so it doesn't make a lot of sense to
split the feature bits.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: update thermal throttling values for 8000 devices
Ido Yariv [Tue, 5 May 2015 03:01:46 +0000 (23:01 -0400)]
iwlwifi: update thermal throttling values for 8000 devices

8000 devices have different thermal throttling values from previous
generations.

Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: 8000: fallback to default NVM file
Eran Harary [Sun, 19 Apr 2015 07:05:18 +0000 (10:05 +0300)]
iwlwifi: 8000: fallback to default NVM file

Set a default NVM in case the userspace specifies a file
that doesn't match the hardware version. This allows not
to change the boot scripts when someone replaces the device
with a newer hardware step.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: Add debugfs entry for Tx power limit
Matti Gottlieb [Mon, 4 May 2015 06:34:37 +0000 (09:34 +0300)]
iwlwifi: mvm: Add debugfs entry for Tx power limit

Add debugfs entry for showing the different Tx power restrictions that are
caused due to various reasons.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: simplify return value
Emmanuel Grumbach [Tue, 28 Apr 2015 18:32:47 +0000 (21:32 +0300)]
iwlwifi: pcie: simplify return value

This was spot by Coccinelle.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: bump API to 14
Emmanuel Grumbach [Tue, 26 May 2015 08:59:53 +0000 (11:59 +0300)]
iwlwifi: bump API to 14

The iwlmvm driver is now able to handle -14.ucode.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: refactor common transport alloc/init code
Johannes Berg [Fri, 22 May 2015 09:28:58 +0000 (11:28 +0200)]
iwlwifi: refactor common transport alloc/init code

The transport modules all need to allocate memory and set up
certain values. Refactor that code into a new common function
to share it and to simplify the error handling.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: small fix in a comment about UMAC scan schedules
Luciano Coelho [Mon, 25 May 2015 06:36:53 +0000 (09:36 +0300)]
iwlwifi: mvm: small fix in a comment about UMAC scan schedules

The UMAC API supports multiple scan schedules, but now we use only a
single one.  Change the comment to make this clear and avoid
confusion.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: Remove use of the deprecacted PTR_RET
Nicholas Krause [Sun, 24 May 2015 00:53:21 +0000 (20:53 -0400)]
iwlwifi: Remove use of the deprecacted PTR_RET

This removes the use of the two deprecated calls to the
macro PTR_RET in iwl_mvm_get_regdomain and replaces them
both to PTR_ERR_OR_ZERO.

Signed-off-by: Nicholas Krause <xerofoify@gmail.com>
[Commit message editing]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: fix ROC reference accounting
Eliad Peller [Sun, 19 Apr 2015 08:41:04 +0000 (11:41 +0300)]
iwlwifi: mvm: fix ROC reference accounting

commit b112889c5af8124 ("iwlwifi: mvm: add Aux ROC request/response flow")
added aux ROC flow in addition to the existing ROC flow. While doing
it, it moved the ROC reference release to a common work item, which
is being called for both the ROC and aux ROC flows.

This resulted in invalid reference accounting, as no reference was
taken in case of aux ROC, while a reference was released on completion.

Fix it by adding a reference for the aux ROC as well, and release
only the relevant references on completion (according to the set bits).

While at it, convert cancel_work_sync() to flush_work(), in order
to make sure the references are being cleaned properly.

Fixes: b112889c5af8 ("iwlwifi: mvm: add Aux ROC request/response flow")
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: don't call set_pwr functions for family 8000
Luciano Coelho [Mon, 27 Apr 2015 18:38:10 +0000 (21:38 +0300)]
iwlwifi: pcie: don't call set_pwr functions for family 8000

We should not call the iwl_pcie_set_pwr() functions in the
suspend/resume flows for family 8000, because the register used is
locked in devices from this family.  Doing this causes an NMI
protection error (RT_NMI_INTERRUPT_PREG_PROTECTION).

To fix this, skip those calls if the device family is
IWL_DEVICE_FAMILY_8000.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoMerge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next
Emmanuel Grumbach [Tue, 26 May 2015 16:20:34 +0000 (19:20 +0300)]
Merge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Conflicts:
drivers/net/wireless/iwlwifi/Kconfig

9 years agoiwlwifi: mvm: avoid use-after-free on iwl_mvm_d0i3_enable_tx()
Eliad Peller [Tue, 14 Apr 2015 08:36:23 +0000 (11:36 +0300)]
iwlwifi: mvm: avoid use-after-free on iwl_mvm_d0i3_enable_tx()

qos_seq points (to a struct) inside the command response data.

Make sure to free the response only after qos_seq is not
needed anymore.

Reported-by: Heng Luo <heng.luo@intel.com>
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: clean net-detect info if device was reset during suspend
Luciano Coelho [Mon, 4 May 2015 14:03:17 +0000 (17:03 +0300)]
iwlwifi: mvm: clean net-detect info if device was reset during suspend

If the device is reset during suspend with net-detect enabled, we
leave the net-detect information dangling and this causes the next
suspend to fail with a warning:

[21795.351010] WARNING: at /root/iwlwifi/iwlwifi-stack-dev/drivers/net/wireless/iwlwifi/mvm/d3.c:989 __iwl_mvm_suspend.isra.6+0x2be/0x460 [iwlmvm]()
[21795.353253] Modules linked in: iwlmvm(O) iwlwifi(O) mac80211(O) cfg80211(O) compat(O) [...]
[21795.366168] CPU: 1 PID: 3645 Comm: bash Tainted: G           O 3.10.29-dev #1
[21795.368785] Hardware name: Dell Inc. Latitude E6430/0CPWYR, BIOS A09 12/13/2012
[21795.371441]  f8ec6748 f8ec6748 e51f3ce8 c168aa62 e51f3d10 c103a824 c1871238 f8ec6748
[21795.374228]  000003dd f8eb982e f8eb982e 00000000 c3408ed4 c41edbbc e51f3d20 c103a862
[21795.377006]  00000009 00000000 e51f3da8 f8eb982e c41ee3dc 00000004 e7970000 e51f3d74
[21795.379792] Call Trace:
[21795.382461]  [<c168aa62>] dump_stack+0x16/0x18
[21795.385133]  [<c103a824>] warn_slowpath_common+0x64/0x80
[21795.387803]  [<f8eb982e>] ? __iwl_mvm_suspend.isra.6+0x2be/0x460 [iwlmvm]
[21795.390485]  [<f8eb982e>] ? __iwl_mvm_suspend.isra.6+0x2be/0x460 [iwlmvm]
[21795.393124]  [<c103a862>] warn_slowpath_null+0x22/0x30
[21795.395787]  [<f8eb982e>] __iwl_mvm_suspend.isra.6+0x2be/0x460 [iwlmvm]
[21795.398464]  [<f8eb9d7c>] iwl_mvm_suspend+0xec/0x140 [iwlmvm]
[21795.401127]  [<c104be11>] ? del_timer_sync+0xa1/0xc0
[21795.403800]  [<f8d4107e>] __ieee80211_suspend+0x1de/0xff0 [mac80211]
[21795.406459]  [<c168e43d>] ? mutex_lock_nested+0x25d/0x350
[21795.409084]  [<c1586b64>] ? rtnl_lock+0x14/0x20
[21795.411685]  [<f8cf0076>] ieee80211_suspend+0x16/0x20 [mac80211]
[21795.414318]  [<f8c4e014>] wiphy_suspend+0x74/0x710 [cfg80211]
[21795.416916]  [<c141e612>] __device_suspend+0x1e2/0x220
[21795.419521]  [<f8c4dfa0>] ? addresses_show+0xa0/0xa0 [cfg80211]
[21795.422097]  [<c141f997>] dpm_suspend+0x67/0x210
[21795.424661]  [<c141fd6f>] dpm_suspend_start+0x4f/0x60
[21795.427219]  [<c108d8e0>] suspend_devices_and_enter+0x60/0x480
[21795.429768]  [<c168646a>] ? printk+0x4d/0x4f
[21795.432295]  [<c108de76>] pm_suspend+0x176/0x210
[21795.434830]  [<c108ca5d>] state_store+0x5d/0xb0
[21795.437410]  [<c108ca00>] ? wakeup_count_show+0x50/0x50
[21795.439961]  [<c13208db>] kobj_attr_store+0x1b/0x30
[21795.442514]  [<c11e3a4b>] sysfs_write_file+0xab/0x100
[21795.445088]  [<c11e39a0>] ? sysfs_poll+0xa0/0xa0
[21795.447659]  [<c1179655>] vfs_write+0xa5/0x1c0
[21795.450212]  [<c1179af7>] SyS_write+0x57/0xa0
[21795.452699]  [<c1699ec1>] sysenter_do_call+0x12/0x32
[21795.455146] ---[ end trace faf5321baba2bfdb ]---

To fix this, call the iwl_mvm_free_nd() function in case of any error
during resume.  Additionally, rename the "out_unlock" label to err to
make it clearer that it's only called in error conditions.

Cc: stable@vger.kernel.org [3.19+]
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: take the UCODE_DOWN reference when resuming
Luciano Coelho [Tue, 28 Apr 2015 05:41:55 +0000 (08:41 +0300)]
iwlwifi: mvm: take the UCODE_DOWN reference when resuming

The __iwl_mvm_resume() function always returns 1, which causes
mac80211 to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART.  This
type of reconfig calls iwl_mvm_restart_complete(), where we unref the
IWL_MVM_REF_UCODE_DOWN, so we should always take the reference in this
case.

This prevents this kind of warning from happening:

[40026.103025] WARNING: at /root/iwlwifi/iwlwifi-stack-dev/drivers/net/wireless/iwlwifi/mvm/mac80211.c:236 iwl_mvm_unref+0xc9/0xd0 [iwlmvm]()
[40026.105145] Modules linked in: iwlmvm(O) iwlwifi(O) mac80211(O) cfg80211(O) compat(O) ctr ccm arc4 autofs4 snd_hda_codec_hdmi snd_hda_codec_idt joydev coretemp kvm_intel kvm aesni_intel ablk_helper cryptd lrw aes_i586 snd_hda_intel xts snd_hda_codec gf128mul snd_hwdep snd_pcm snd_seq_midi dell_wmi snd_rawmidi sparse_keymap snd_seq_midi_event snd_seq uvcvideo dell_laptop videobuf2_core dcdbas microcode videodev psmouse snd_timer videobuf2_vmalloc videobuf2_memops serio_raw snd_seq_device btusb i915 snd bluetooth lpc_ich drm_kms_helper soundcore snd_page_alloc drm i2c_algo_bit wmi parport_pc ppdev video binfmt_misc rpcsec_gss_krb5 nfsd mac_hid nfs_acl nfsv4 auth_rpcgss nfs fscache lockd sunrpc msdos lp parport sdhci_pci sdhci ahci libahci e1000e mmc_core ptp pps_core [last unloaded: compat]
[40026.117640] CPU: 2 PID: 3827 Comm: bash Tainted: G        W  O 3.10.29-dev #1
[40026.120216] Hardware name: Dell Inc. Latitude E6430/0CPWYR, BIOS A09 12/13/2012
[40026.122815]  f8effd18 f8effd18 e740fd18 c168aa62 e740fd40 c103a824 c1871238 f8effd18
[40026.125527]  000000ec f8ec79c9 f8ec79c9 d5d29ba4 d5d2a20c 00000000 e740fd50 c103a862
[40026.128209]  00000009 00000000 e740fd7c f8ec79c9 f1c591c4 00000400 00000000 f8efb490
[40026.130886] Call Trace:
[40026.133506]  [<c168aa62>] dump_stack+0x16/0x18
[40026.136115]  [<c103a824>] warn_slowpath_common+0x64/0x80
[40026.138727]  [<f8ec79c9>] ? iwl_mvm_unref+0xc9/0xd0 [iwlmvm]
[40026.141319]  [<f8ec79c9>] ? iwl_mvm_unref+0xc9/0xd0 [iwlmvm]
[40026.143881]  [<c103a862>] warn_slowpath_null+0x22/0x30
[40026.146453]  [<f8ec79c9>] iwl_mvm_unref+0xc9/0xd0 [iwlmvm]
[40026.149030]  [<f8ec7a4d>] iwl_mvm_mac_reconfig_complete+0x7d/0x210 [iwlmvm]
[40026.151645]  [<f8b74b20>] ? ftrace_raw_event_drv_reconfig_complete+0xc0/0xe0 [mac80211]
[40026.154291]  [<f8b6769e>] ieee80211_reconfig+0x28e/0x2620 [mac80211]
[40026.156920]  [<c10ef0ea>] ? ring_buffer_unlock_commit+0xba/0x100
[40026.159585]  [<f8b4a04d>] ieee80211_resume+0x6d/0x80 [mac80211]
[40026.162206]  [<f8a79722>] wiphy_resume+0x72/0x260 [cfg80211]
[40026.164799]  [<c141e2e7>] ? device_resume+0x57/0x150
[40026.167425]  [<f8a796b0>] ? wiphy_suspend+0x710/0x710 [cfg80211]
[40026.170075]  [<c141e26e>] dpm_run_callback+0x2e/0x50
[40026.172695]  [<c141e321>] device_resume+0x91/0x150
[40026.175334]  [<c141f636>] dpm_resume+0xf6/0x200
[40026.177922]  [<c141f920>] dpm_resume_end+0x10/0x20
[40026.180489]  [<c108d9f7>] suspend_devices_and_enter+0x177/0x480
[40026.183037]  [<c168646a>] ? printk+0x4d/0x4f
[40026.185559]  [<c108de76>] pm_suspend+0x176/0x210
[40026.188065]  [<c108ca5d>] state_store+0x5d/0xb0
[40026.190581]  [<c108ca00>] ? wakeup_count_show+0x50/0x50
[40026.193052]  [<c13208db>] kobj_attr_store+0x1b/0x30
[40026.195608]  [<c11e3a4b>] sysfs_write_file+0xab/0x100
[40026.198055]  [<c11e39a0>] ? sysfs_poll+0xa0/0xa0
[40026.200469]  [<c1179655>] vfs_write+0xa5/0x1c0
[40026.202893]  [<c1179af7>] SyS_write+0x57/0xa0
[40026.205245]  [<c1699ec1>] sysenter_do_call+0x12/0x32
[40026.207619] ---[ end trace db1d5a72a0381b0a ]---

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: EliadX Peller <eliad@wizery.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: BT Coex - duplicate the command if sent ASYNC
Emmanuel Grumbach [Mon, 4 May 2015 08:20:52 +0000 (11:20 +0300)]
iwlwifi: mvm: BT Coex - duplicate the command if sent ASYNC

There are buses that can't handle ASYNC command without
copying them. Duplicate the host command instead.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: nvm: force mac from otp in case nvm mac is reserved
Liad Kaufman [Wed, 20 May 2015 12:50:07 +0000 (15:50 +0300)]
iwlwifi: nvm: force mac from otp in case nvm mac is reserved

Take the MAC address from the OTP even if one is present in
the NVM, if that MAC address happens to be a reserved one.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: Free fw_status after use to avoid memory leak
Haim Dreyfuss [Wed, 20 May 2015 05:10:43 +0000 (08:10 +0300)]
iwlwifi: mvm: Free fw_status after use to avoid memory leak

fw_status is the only pointer pointing to a block of memory
allocated above and should be freed after use.
Note: this come from Klockwork static analyzer.

Cc: stable@vger.kernel.org [3.19+]
Fixes: 2021a89d7b8a ("iwlwifi: mvm: treat netdetect wake up separately")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: fix MLME trigger
Emmanuel Grumbach [Thu, 14 May 2015 09:11:38 +0000 (12:11 +0300)]
iwlwifi: mvm: fix MLME trigger

A few triggers have status = MLME_SUCCESS and they are still
interesting. E.g. if we want to collect data upon deauth,
the status will be MLME_SUCCESS. Fix that.

Fixes: d42f53503406 ("iwlwifi: mvm: add trigger for firmware dump upon MLME failures")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: don't disable the busmaster DMA clock for family 8000
Avri Altman [Wed, 29 Apr 2015 02:11:10 +0000 (05:11 +0300)]
iwlwifi: pcie: don't disable the busmaster DMA clock for family 8000

Disabling the clocks is a standard procedure while stopping the
device. On family 8000 however, disabling the bus master DMA clock
increases the NIC's power consumption.

To fix this, skip this call if the device family is
IWL_DEVICE_FAMILY_8000.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: 7000: modify the firmware name for 3165
Emmanuel Grumbach [Thu, 30 Apr 2015 06:29:06 +0000 (09:29 +0300)]
iwlwifi: 7000: modify the firmware name for 3165

3165 really needs to load iwlwifi-7265D-13.ucode. This
device is supported starting from -13.ucode, update the
MIN and OK defines accordingly. While at it, add 3165 to
the device list in the Kconfig file.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: forbid MIMO on devices that don't support it
Emmanuel Grumbach [Thu, 30 Oct 2014 08:19:38 +0000 (10:19 +0200)]
iwlwifi: mvm: forbid MIMO on devices that don't support it

There are devices that forbid MIMO by the mean of the NVM.
Detect thoses devices and forbid MIMO otherwise the firmware
would crash. STBC is still allowed on these devices.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: include wildcard SSID in scans
David Spinadel [Tue, 28 Apr 2015 15:06:45 +0000 (18:06 +0300)]
iwlwifi: mvm: include wildcard SSID in scans

Fix a copy paste bug that didn't copy wildcard SSIDs to
scan requests. This bug causes scan with only wildcard
SSID to be passive, and scans with more than one SSID to
send only the direct probes.

Fixes: 2a28ac14c518 ("iwlwifi: mvm: add common scan params to thw iwl_mvm_scan_params struct")
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: remove some unused stuff from scan.c
Luciano Coelho [Tue, 21 Apr 2015 15:32:25 +0000 (18:32 +0300)]
iwlwifi: mvm: remove some unused stuff from scan.c

Some more tidbits left over from the legacy scan removal.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: make thermal throttling values configurable per NIC family
Chaya Rachel Ivgi [Sun, 19 Apr 2015 09:26:39 +0000 (12:26 +0300)]
iwlwifi: mvm: make thermal throttling values configurable per NIC family

The thermal throttling parameters were constant and hardcoded, not allowing
changes for different NIC families.
Change this so that the values are part of the NIC family configuration and
are not constant (so they can be changed dynamically in the future).

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: don't reset key index on HW restart
Johannes Berg [Mon, 20 Apr 2015 15:31:10 +0000 (17:31 +0200)]
iwlwifi: mvm: don't reset key index on HW restart

When a firmware restart is done, don't try to reprogram the keys to new
slots but rather just keep the old key index, while skipping keys that
weren't programmed before.

Not only does this restore the state more faithfully, but it will also
allow using the HW key index for internal purposes as an array index.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: rename generic_scan_cmd functions to dwell
Luciano Coelho [Mon, 20 Apr 2015 12:29:03 +0000 (15:29 +0300)]
iwlwifi: mvm: rename generic_scan_cmd functions to dwell

The generic scan command functions are now irrelevant, since both
sched and regular scans are in the same code.  So rename this
functions to dwell and isolate all the dwell-related setting to them.
Keeping the dwell code separate makes it easier to compare the LMAC
and UMAC versions.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: move all LMAC scan flags into a single funtion
Luciano Coelho [Mon, 20 Apr 2015 11:47:49 +0000 (14:47 +0300)]
iwlwifi: mvm: move all LMAC scan flags into a single funtion

Having an LMAC counterpart for the existing UMAC flags function makes
things more consistent and easy to compare and spot the differences.
The flags are the same, but are in different bits, so unfortunately we
can't use a single function for both APIs.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: move all UMAC scan flags setting into the relevant function
Luciano Coelho [Mon, 20 Apr 2015 11:37:16 +0000 (14:37 +0300)]
iwlwifi: mvm: move all UMAC scan flags setting into the relevant function

Clean the code a little by moving all the flags into the right
function.  Additionally, rename the function, since "common" is now
irrelevant.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: remove deprecated command IDs
David Spinadel [Tue, 14 Apr 2015 06:17:43 +0000 (09:17 +0300)]
iwlwifi: mvm: remove deprecated command IDs

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: allow to limit the size of the external buffer for firmware debugging
Emmanuel Grumbach [Tue, 14 Apr 2015 20:14:48 +0000 (23:14 +0300)]
iwlwifi: allow to limit the size of the external buffer for firmware debugging

When we use an external buffer, it is allocated from the
t DRAM and can be as big as 64MB. This buffer is huge and
might not be needed for the specific issue being chased.
Especially if lots of dumps are going to be created.
Allow to limit the size of the buffer in the configuration.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: avoid use-after-free on iwl_mvm_d0i3_enable_tx() [BUGFIX]
Eliad Peller [Tue, 14 Apr 2015 08:36:23 +0000 (11:36 +0300)]
iwlwifi: mvm: avoid use-after-free on iwl_mvm_d0i3_enable_tx() [BUGFIX]

qos_seq points (to a struct) inside the command response data.

Make sure to free the response only after qos_seq is not
needed anymore.

type=bugfix
bug=not-tracked
fixes=I78c07110b59dcd389207bd2b168b0a2760839fe0

Change-Id: I619ce2c17e064dc98c7be9abc1e23175fdc8fb9a
Reported-by: Heng Luo <heng.luo@intel.com>
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-on: https://gerrit.rds.intel.com/r/55381
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Tested-by: IWL Jenkins
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine UMAC scans into one
Luciano Coelho [Fri, 17 Apr 2015 11:49:58 +0000 (14:49 +0300)]
iwlwifi: mvm: combine UMAC scans into one

With just a few differences left in the UMAC scan functions now, we
can merge them into one, taking care of the small difference according
to the total number of iterations required.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: trim sched scan delay down to 16-bit for LMAC as well
Luciano Coelho [Fri, 17 Apr 2015 08:18:46 +0000 (11:18 +0300)]
iwlwifi: mvm: trim sched scan delay down to 16-bit for LMAC as well

In theory, LMAC scans can handle a 32-bit delay, but since waiting for
over 18 hours to start the scan is a bit silly and to keep it aligned
with UMAC scans (which only support 16-bit delays), trim it down to
16-bits.

This makes the LMAC vs. UMAC and the UMAC reg scan vs. UMAC sched scan
code more similar.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine LMAC scans into one
Luciano Coelho [Fri, 17 Apr 2015 06:53:55 +0000 (09:53 +0300)]
iwlwifi: mvm: combine LMAC scans into one

The last remaining difference between the regular scan and scheduled
scan flows for LMAC is the FW capabilities check for EBS scans.

Merge these checks into a new function and then combine the LMAC scan
functions into a single one.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add number of scan iterations and multiplier to params
Luciano Coelho [Thu, 16 Apr 2015 17:13:28 +0000 (20:13 +0300)]
iwlwifi: mvm: add number of scan iterations and multiplier to params

As another step towards combining the scan and sched scan functions,
add parameters that tell the scan function how many iterations we want
(i.e. 1 for normal scan, more for scheduled scan) and that set the
full scan multiplier (only meaningful for LMAC).

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine LMAC and UMAC preq generation
Luciano Coelho [Wed, 15 Apr 2015 13:34:13 +0000 (16:34 +0300)]
iwlwifi: mvm: combine LMAC and UMAC preq generation

The probe request to be added to both LMAC and UMAC scan commands are
identical, so move the generation out of the LMAC/UMAC-specific code.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: rename scan_calc_params to scan_calc_dwell
Luciano Coelho [Wed, 15 Apr 2015 13:21:16 +0000 (16:21 +0300)]
iwlwifi: mvm: rename scan_calc_params to scan_calc_dwell

To make things clearer, rename the iwl_mvm_scan_calc_params() function
to iwl_mvm_calc_dwell() and make it calculate and fill in only
dwell-related parameters.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine SSID functions for sched and regular scans
Luciano Coelho [Thu, 2 Apr 2015 14:49:04 +0000 (17:49 +0300)]
iwlwifi: mvm: combine SSID functions for sched and regular scans

Now that both scheduled scan and regular scan SSID populating
functions do the same thing, they can be combined into a single
function.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: revert order of SSIDs for sched scans
Luciano Coelho [Thu, 2 Apr 2015 13:31:42 +0000 (16:31 +0300)]
iwlwifi: mvm: revert order of SSIDs for sched scans

The firmware inverts the order of the SSIDs sent out in probe requests
(for some reason).  For regular scans, we've been passing the SSIDs in
the opposite order so they go out in the order we want.  With
scheduled scans, we were not doing that, so they were sent out in
reverse order of priority.  Fix that by using the reverse order when
populating the SSIDs array for scheduled scans as well.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine ssid_bitmap setting for regular scans
Luciano Coelho [Thu, 2 Apr 2015 12:37:05 +0000 (15:37 +0300)]
iwlwifi: mvm: combine ssid_bitmap setting for regular scans

The only difference in the ssid_bitmap between LMAC and UMAC scans is
that in LMAC bits 1 to 20 are used, while in UMAC bits 0 to 19 are
used (*sigh*).  So we can combine the bitmap creation into a single
function and simply shift left if LMAC is used.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add common scan params to thw iwl_mvm_scan_params struct
Luciano Coelho [Wed, 1 Apr 2015 21:08:35 +0000 (00:08 +0300)]
iwlwifi: mvm: add common scan params to thw iwl_mvm_scan_params struct

Many parameters are common for all scans.  Instead of parsing the
cfg80211 scan and sched scan requests differently in each flow, move
the parsing outside of the API/scan-type specific functions.  In this
way, we only need to differentiate between scan types once.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine parts of UMAC and LMAC sched scans
Luciano Coelho [Wed, 1 Apr 2015 14:37:44 +0000 (17:37 +0300)]
iwlwifi: mvm: combine parts of UMAC and LMAC sched scans

Similarly to the regular scan patch, a lot of the UMAC and LMAC sched
scan code is also almost identical.  Grab the low hanging fruits by
combining the obvious parts.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine parts of UMAC and LMAC scans
Luciano Coelho [Wed, 1 Apr 2015 14:09:56 +0000 (17:09 +0300)]
iwlwifi: mvm: combine parts of UMAC and LMAC scans

A lot of the UMAC and LMAC scan code is almost identical.  Grab the
low hanging fruits by combining the obvious parts.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: clarify the device / firmware mapping in Kconfig
Emmanuel Grumbach [Sun, 19 Apr 2015 06:57:09 +0000 (09:57 +0300)]
iwlwifi: clarify the device / firmware mapping in Kconfig

The lists of the devices supported by either MVM or DVM
firmwares was incomplete. Point to
https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi#firmware
instead of maintaining the lists.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: iterate all interfaces during HW recovery cleanup
Arik Nemtsov [Mon, 23 Feb 2015 12:42:41 +0000 (14:42 +0200)]
iwlwifi: mvm: iterate all interfaces during HW recovery cleanup

Usually during HW recovery the state of all active interfaces is cleaned
up during drv_start(). There's a special case where a HW restart is
requested when an interface is going down. In this case the iface-iterator
won't see this interface and we won't clean it. This has bad consequences
once the interface is legitimately brought up again.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: combine scan size checks into a common function
Luciano Coelho [Fri, 27 Mar 2015 07:28:26 +0000 (10:28 +0300)]
iwlwifi: mvm: combine scan size checks into a common function

Instead of repeating the same code in 4 different places, combine the
comparisons into a new function.  Additionally, this change fixes UMAC
scans where the RRM IEs were not taken into consideration when
calculating the IE length.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: always use iwl_mvm_scan_size to calculate the scan size
Luciano Coelho [Mon, 30 Mar 2015 12:09:24 +0000 (15:09 +0300)]
iwlwifi: mvm: always use iwl_mvm_scan_size to calculate the scan size

We have a function (iwl_mvm_scan_size()) that can calculate the scan
size for both UMAC and LMAC scans.  Use that function instead of
calculating manually for LMAC scan and sched scan.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: allow scheduled scan for all the firmwares
Emmanuel Grumbach [Mon, 16 Mar 2015 12:49:55 +0000 (14:49 +0200)]
iwlwifi: mvm: allow scheduled scan for all the firmwares

We don't support -9.ucode so, all the released firmwares
support scheduled scan properly.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: some clean ups in fw-api-scan.h
Luciano Coelho [Wed, 1 Apr 2015 21:25:44 +0000 (00:25 +0300)]
iwlwifi: mvm: some clean ups in fw-api-scan.h

Remove unused struct iwl_scan_offload_req and enum
iwl_scan_offload_flags which are not used anymore.  Rename
iwl_scan_offload_schedule to iwl_scan_schedule_lmac to make it clear
that this is for LMAC only.  And fix a small typo.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: rs: remove unneeded check of average tpt in window
Liad Kaufman [Thu, 2 Apr 2015 13:54:27 +0000 (16:54 +0300)]
iwlwifi: rs: remove unneeded check of average tpt in window

Previously there was a check that compared window->average_tpt
to some value, and if it was different - it set it to that
value. However, this value was already calculated and set in
_rs_collect_tx_data(), so the entire check is unneeded.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: support marbh fw dbg mode
Liad Kaufman [Mon, 5 Jan 2015 12:06:14 +0000 (14:06 +0200)]
iwlwifi: pcie: support marbh fw dbg mode

This adds support for configuring and retrieving the FW
monitor in MARBH mode.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: differentiate net-detect from sched scan
Luciano Coelho [Fri, 20 Mar 2015 14:11:28 +0000 (16:11 +0200)]
iwlwifi: mvm: differentiate net-detect from sched scan

Net-detect scans were using the same type as sched scan, which was
causing the driver to return -EBUSY and prevent the system from
suspending if there was an ongoing scheduled scan.  To avoid this, add
a new type for net-detect and don't stop anything when it is
requested, so that the existing scheduled scan will be resumed when
the system wakes up.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: move scan code from mac80211.c to scan.c
Luciano Coelho [Fri, 20 Mar 2015 13:51:36 +0000 (15:51 +0200)]
iwlwifi: mvm: move scan code from mac80211.c to scan.c

Move all the scan code that was in mac80211.c to scan.c where it
belongs, leaving only the parts that are specific to mac80211 ops.

Change some function definitions slightly to improve consistency.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: rename unified_scan symbols to just scan
Luciano Coelho [Fri, 20 Mar 2015 11:35:47 +0000 (13:35 +0200)]
iwlwifi: mvm: rename unified_scan symbols to just scan

All scans are using the unified APIs now, so using "unified" in the
symbols is useless and just make them much longer and the main
difference between scans now is LMAC vs. UMAC.  Remove "unified" from
all relevant symbols.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: generalize the other-scan stopping code
Luciano Coelho [Thu, 19 Mar 2015 20:58:33 +0000 (22:58 +0200)]
iwlwifi: mvm: generalize the other-scan stopping code

Instead of hardcoding the differences between UMAC scans and LMAC
scans (which in this case is the number of simultaneous scans that can
run), introduce a max_scans variable and stop scans of the other type
(i.e. stop sched scan if regular scan is being attempted and
vice-versa) if the number of running scans reached the maximum.

Add a function that checks if the maximum number of scans was reached
and stops the appropriate scan to make room for the new scan.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: check if scan can be started before cancelling other scans
Luciano Coelho [Fri, 20 Mar 2015 07:29:42 +0000 (09:29 +0200)]
iwlwifi: mvm: check if scan can be started before cancelling other scans

If a new scan cannot be run for some reason, we shouldn't cancel other
ongoing scans.  Move the checks to before the code that cancels other
scans.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: don't wait for scan stopped work when cancelling scans
Luciano Coelho [Fri, 20 Mar 2015 06:59:56 +0000 (08:59 +0200)]
iwlwifi: mvm: don't wait for scan stopped work when cancelling scans

Now that we have separate flags for stopping scans, we don't need to
wait for the scan stopped work to complete before starting the new
scan.  Previously we needed it because we had no way of distinguishing
the scan that was being stopped from the scan that was currently
running.  With the new flags there won't be any confusions and we are
able to handle the stop for the correct type of scan.

Thus we can remove the iwl_mvm_cancel_scan_wait_notif() function.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: convert scan_status to a bitmap
Luciano Coelho [Tue, 10 Feb 2015 08:42:26 +0000 (10:42 +0200)]
iwlwifi: mvm: convert scan_status to a bitmap

LMAC scans cannot handle more than one scan at a time, but UMAC scans
can.  To avoid confusion we should combine the states of these two
types of scans.  To do so, we need to support mutliple scans at the
same time for UMAC.

This commit changes the scan_status element from a single value to a
bitmask of running scan types for LMAC.  Later, we will modify UMAC
scans to use the same state bitmask.

Additionally, add stopping scan flags for scheduled and regular scans.
This makes it easier to differentiate and handle stop requests
triggered by the driver and spontaneous stops generated by the
firmware.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: don't increase max_out_time when low priority scan is requested
Luciano Coelho [Thu, 9 Apr 2015 11:48:11 +0000 (14:48 +0300)]
iwlwifi: mvm: don't increase max_out_time when low priority scan is requested

In some cases, max_out_time value is smaller than 200 and having the
NL80211_SCAN_FLAG_LOW_PRIORITY flag was actually causing the
max_out_time to be increased.  To avoid that, set max_out_time to 200
only if it's greater than 200.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add scan parameters debugging info
Luciano Coelho [Thu, 9 Apr 2015 09:18:56 +0000 (12:18 +0300)]
iwlwifi: mvm: add scan parameters debugging info

Add scan parameters information to make it easier to debug scan dwell
times and fragmentation.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: rs: cleanup last_txrate_idx
Eyal Shapira [Sun, 12 Apr 2015 20:45:27 +0000 (23:45 +0300)]
iwlwifi: rs: cleanup last_txrate_idx

last_txrate_idx isn't used anymore and can be dropped as this info
exists already somewhere else.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: rs: remove code duplication when filling lq cmd
Liad Kaufman [Sun, 5 Apr 2015 10:52:50 +0000 (13:52 +0300)]
iwlwifi: rs: remove code duplication when filling lq cmd

Same code appear a few lines later while the position has
no effect on the actual flow.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: ROC: Reduce the aux roc max delay
Matti Gottlieb [Sun, 29 Mar 2015 10:38:16 +0000 (13:38 +0300)]
iwlwifi: mvm: ROC: Reduce the aux roc max delay

When user space requests mac80211 to transmit a frame off
channel, mac80211 notifies the driver, and the driver requests
a time event from the ucode, and then transmits the frame.
When the driver requests a time event, it can specify what is the allowed
max delay for starting the time event.

When the max delay is too big, this can cause a timeout in the user space,
that is waiting for the frame to be transmitted.

Currently the max delay is extremely long.

Reduce the max delay for the AUX ROC time event that is sent to the ucode.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoMerge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next
Emmanuel Grumbach [Wed, 29 Apr 2015 10:12:18 +0000 (13:12 +0300)]
Merge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next

9 years agoiwlwifi: mvm: force quota update update after FW restart
Johannes Berg [Tue, 21 Apr 2015 07:21:46 +0000 (09:21 +0200)]
iwlwifi: mvm: force quota update update after FW restart

During firmware restart, the quota command isn't calculated multiple
times, but after the firmware restart it has to be sent, so force it.
Otherwise the firmware crashes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: fix typo in CONFIG option
Emmanuel Grumbach [Tue, 28 Apr 2015 12:00:23 +0000 (15:00 +0300)]
iwlwifi: mvm: fix typo in CONFIG option

I forgot to rename the CPTCFG_ prefix...

Fixes: 484b3d13b4ac ("iwlwifi: mvm: add debugfs entry with the number of net-detect scans")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: don't power off the device between INIT and OPER firmwares
Eran Harary [Mon, 27 Apr 2015 07:29:31 +0000 (10:29 +0300)]
iwlwifi: mvm: don't power off the device between INIT and OPER firmwares

Our device needs two different firmwares: the INIT firmware
and the operational (OPER) firmware. The first one is run
when the driver loads and it returns calibrations results
as well as the NVM. The second one implements the WiFi
protocol.

If the wlan interface is not brought up, the device is put
to low power state: no firmware will be running. When the
interface is brought up, we would run the OPER firmware
only and reuse the results of the run of the INIT firmware
when the driver was loaded. This is changing with this
patch.
We now run the INIT firmware every time mac80211 calls
start(). The penalty for that is minimal since the INIT
firwmare run fast. I now also avoid to power down the device
between the INIT and OPER firmware on certains buses.

The motivation for this change is that there are components
on the device (MFUART) that are triggered by the INIT
firmware and need the device to be powered up in order to
keep running. Powering the device down between the INIT and
OPER firmware would stop these components and prevent them
from running again since they are triggered by the INIT
firmware only.
The new flow allows this and also allows to trigger these
components again when the interface is brought up after
it has been brought down.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: prevent using unmapped memory in fw monitor
Liad Kaufman [Thu, 16 Apr 2015 14:21:12 +0000 (17:21 +0300)]
iwlwifi: pcie: prevent using unmapped memory in fw monitor

In the case of a DMA mapping error on the last iteration of
the loop of the allocation of memory of the FW monitor we
indeed free the pages, but don't NULL out the page variable
thus allowing for the possibility of setting the FW monitor
variables with invalid data to use.

Fixes: c2d202017da1 ("iwlwifi: pcie: add firmware monitor capabilities")
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: Avoid signal based decisions if ave beacon RSSI is 0
Alexander Bondar [Thu, 26 Mar 2015 11:15:03 +0000 (13:15 +0200)]
iwlwifi: mvm: Avoid signal based decisions if ave beacon RSSI is 0

If for some reason statistics notification received from the firmware
reports 0 in average beacon RSSI value, then skip it and avoid signal
based decisions.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: fix scan iteration complete notification handling
Avraham Stern [Tue, 31 Mar 2015 13:14:41 +0000 (16:14 +0300)]
iwlwifi: mvm: fix scan iteration complete notification handling

Scan iteration complete notification handling uses the wrong FW API
version (version 2 instead of version 3).
Fix that by removing version 2 API which is no longer used, and using
only the updated version.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Reviewed-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: don't stop the FW monitor too early
Emmanuel Grumbach [Mon, 13 Apr 2015 09:05:48 +0000 (12:05 +0300)]
iwlwifi: mvm: don't stop the FW monitor too early

When the delay paramatere is provided, we need to stop
the collection only after the delay has elapsed.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: fix Tx Power firmware API
Avri Altman [Sat, 18 Apr 2015 19:16:42 +0000 (22:16 +0300)]
iwlwifi: mvm: fix Tx Power firmware API

The firmware doesn't relate the scan to a vif. The scan is
run by a separate entity called auxiliary MAC (aka AUX MAC).
This AUX MAC needs to get Tx power limitations that are
not applied on a specific vif, but on the device as a whole.

This can be implemented by using the minimum of all the
values set by the user for all the MACs. But then we need
to ignore the limitations that come from the AP or
regulatory for a specific vif: a specific vif might have
regulatory limitations because of the channel is works on.
This limit is irrelevant for the AUX MAC.
Use the new API from mac80211: the user_power_level in
bss_conf to achieve this.

Firmware -13.ucode has already moved to this API.

Change-Id: Ifba83660f378e91b93bd46d29fe8ba35a7c168a4
Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Linus Torvalds [Wed, 15 Apr 2015 16:00:47 +0000 (09:00 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Add BQL support to via-rhine, from Tino Reichardt.

 2) Integrate SWITCHDEV layer support into the DSA layer, so DSA drivers
    can support hw switch offloading.  From Floria Fainelli.

 3) Allow 'ip address' commands to initiate multicast group join/leave,
    from Madhu Challa.

 4) Many ipv4 FIB lookup optimizations from Alexander Duyck.

 5) Support EBPF in cls_bpf classifier and act_bpf action, from Daniel
    Borkmann.

 6) Remove the ugly compat support in ARP for ugly layers like ax25,
    rose, etc.  And use this to clean up the neigh layer, then use it to
    implement MPLS support.  All from Eric Biederman.

 7) Support L3 forwarding offloading in switches, from Scott Feldman.

 8) Collapse the LOCAL and MAIN ipv4 FIB tables when possible, to speed
    up route lookups even further.  From Alexander Duyck.

 9) Many improvements and bug fixes to the rhashtable implementation,
    from Herbert Xu and Thomas Graf.  In particular, in the case where
    an rhashtable user bulk adds a large number of items into an empty
    table, we expand the table much more sanely.

10) Don't make the tcp_metrics hash table per-namespace, from Eric
    Biederman.

11) Extend EBPF to access SKB fields, from Alexei Starovoitov.

12) Split out new connection request sockets so that they can be
    established in the main hash table.  Much less false sharing since
    hash lookups go direct to the request sockets instead of having to
    go first to the listener then to the request socks hashed
    underneath.  From Eric Dumazet.

13) Add async I/O support for crytpo AF_ALG sockets, from Tadeusz Struk.

14) Support stable privacy address generation for RFC7217 in IPV6.  From
    Hannes Frederic Sowa.

15) Hash network namespace into IP frag IDs, also from Hannes Frederic
    Sowa.

16) Convert PTP get/set methods to use 64-bit time, from Richard
    Cochran.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1816 commits)
  fm10k: Bump driver version to 0.15.2
  fm10k: corrected VF multicast update
  fm10k: mbx_update_max_size does not drop all oversized messages
  fm10k: reset head instead of calling update_max_size
  fm10k: renamed mbx_tx_dropped to mbx_tx_oversized
  fm10k: update xcast mode before synchronizing multicast addresses
  fm10k: start service timer on probe
  fm10k: fix function header comment
  fm10k: comment next_vf_mbx flow
  fm10k: don't handle mailbox events in iov_event path and always process mailbox
  fm10k: use separate workqueue for fm10k driver
  fm10k: Set PF queues to unlimited bandwidth during virtualization
  fm10k: expose tx_timeout_count as an ethtool stat
  fm10k: only increment tx_timeout_count in Tx hang path
  fm10k: remove extraneous "Reset interface" message
  fm10k: separate PF only stats so that VF does not display them
  fm10k: use hw->mac.max_queues for stats
  fm10k: only show actual queues, not the maximum in hardware
  fm10k: allow creation of VLAN on default vid
  fm10k: fix unused warnings
  ...

9 years agoMerge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Wed, 15 Apr 2015 04:03:26 +0000 (21:03 -0700)]
Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:
 "Included in this update are both some long term fixes and some new
  features.

  Fixes:

   - An integer overflow in the calculation of ELF_ET_DYN_BASE.

   - Avoiding OOMs for high-order IOMMU allocations

   - SMP requires the data cache to be enabled for synchronisation
     primitives to work, so prevent the CPU_DCACHE_DISABLE option being
     visible on SMP builds.

   - A bug going back 10+ years in the noMMU ARM94* CPU support code,
     where it corrupts registers.  Found by folk getting Linux running
     on their cameras.

   - Versatile Express needs an errata workaround enabled for CPU
     hot-unplug to work.

  Features:

   - Clean up module linker by handling out of range relocations
     separately from relocation cases we don't handle.

   - Fix a long term bug in the pci_mmap_page_range() code, which we
     hope won't impact userspace (we hope there's no users of the
     existing broken interface.)

   - Don't map DMA coherent allocations when we don't have a MMU.

   - Drop experimental status for SMP_ON_UP.

   - Warn when DT doesn't specify ePAPR mandatory cache properties.

   - Add documentation concerning how we find the start of physical
     memory for AUTO_ZRELADDR kernels, detailing why we have chosen the
     mask and the implications of changing it.

   - Updates from Ard Biesheuvel to address some issues with large
     kernels (such as allyesconfig) failing to link.

   - Allow hibernation to work on modern (ARMv7) CPUs - this appears to
     have never worked in the past on these CPUs.

   - Enable IRQ_SHOW_LEVEL, which changes the /proc/interrupts output
     format (hopefully without userspace breaking...  let's hope that if
     it causes someone a problem, they tell us.)

   - Fix tegra-ahb DT offsets.

   - Rework ARM errata 643719 code (and ARMv7 flush_cache_louis()/
     flush_dcache_all()) code to be more efficient, and enable this
     errata workaround by default for ARMv7+SMP CPUs.  This complements
     the Versatile Express fix above.

   - Rework ARMv7 context code for errata 430973, so that only Cortex A8
     CPUs are impacted by the branch target buffer flush when this
     errata is enabled.  Also update the help text to indicate that all
     r1p* A8 CPUs are impacted.

   - Switch ARM to the generic show_mem() implementation, it conveys all
     the information which we were already reporting.

   - Prevent slow timer sources being used for udelay() - timers running
     at less than 1MHz are not useful for this, and can cause udelay()
     to return immediately, without any wait.  Using such a slow timer
     is silly.

   - VDSO support for 32-bit ARM, mainly for gettimeofday() using the
     ARM architected timer.

   - Perf support for Scorpion performance monitoring units"

vdso semantic conflict fixed up as per linux-next.

* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (52 commits)
  ARM: update errata 430973 documentation to cover Cortex A8 r1p*
  ARM: ensure delay timer has sufficient accuracy for delays
  ARM: switch to use the generic show_mem() implementation
  ARM: proc-v7: avoid errata 430973 workaround for non-Cortex A8 CPUs
  ARM: enable ARM errata 643719 workaround by default
  ARM: cache-v7: optimise test for Cortex A9 r0pX devices
  ARM: cache-v7: optimise branches in v7_flush_cache_louis
  ARM: cache-v7: consolidate initialisation of cache level index
  ARM: cache-v7: shift CLIDR to extract appropriate field before masking
  ARM: cache-v7: use movw/movt instructions
  ARM: allow 16-bit instructions in ALT_UP()
  ARM: proc-arm94*.S: fix setup function
  ARM: vexpress: fix CPU hotplug with CT9x4 tile.
  ARM: 8276/1: Make CPU_DCACHE_DISABLE depend on !SMP
  ARM: 8335/1: Documentation: DT bindings: Tegra AHB: document the legacy base address
  ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address
  ARM: 8333/1: amba: tegra-ahb: fix register offsets in the macros
  ARM: 8339/1: Enable CONFIG_GENERIC_IRQ_SHOW_LEVEL
  ARM: 8338/1: kexec: Relax SMP validation to improve DT compatibility
  ARM: 8337/1: mm: Do not invoke OOM for higher order IOMMU DMA allocations
  ...

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Wed, 15 Apr 2015 03:51:44 +0000 (20:51 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "The major change in this merge is the removal of the support for
  31-bit kernels.  Naturally 31-bit user space will continue to work via
  the compat layer.

  And then some cleanup, some improvements and bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (23 commits)
  s390/smp: wait until secondaries are active & online
  s390/hibernate: fix save and restore of kernel text section
  s390/cacheinfo: add missing facility check
  s390/syscalls: simplify syscall_get_arch()
  s390/irq: enforce correct irqclass_sub_desc array size
  s390: remove "64" suffix from mem64.S and swsusp_asm64.S
  s390/ipl: cleanup macro usage
  s390/ipl: cleanup shutdown_action attributes
  s390/ipl: cleanup bin attr usage
  s390/uprobes: fix address space annotation
  s390: add missing arch_release_task_struct() declaration
  s390: make couple of functions and variables static
  s390/maccess: improve s390_kernel_write()
  s390/maccess: remove potentially broken probe_kernel_write()
  s390/watchdog: support for KVM hypervisors and delete pr_info messages
  s390/watchdog: enable KEEPALIVE for /dev/watchdog
  s390/dasd: remove setting of scheduler from driver
  s390/traps: panic() instead of die() on translation exception
  s390: remove test_facility(2) (== z/Architecture mode active) checks
  s390/cmpxchg: simplify cmpxchg_double
  ...