During the CT-kill exit flow, the card is powered up and partially
initialized to check if the temperature is already low enough.
Unfortunately the init bails early because the CT-kill flag is set.
Make the code bail early only for HW RF-kill, as was intended by the
author. CT-kill is self-imposed and is not really RF-kill.
Fixes: 31b8b343e0 ("iwlwifi: fix RFkill while calibrating")
Cc: <stable@vger.kernel.org> [3.18+]
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The mac80211 patch to pass the NAPI struct only changed iwlwifi to
store the NAPI struct, but we can do better: pass it directly from
the lower transport layer to the opmode during RX, and then on to
mac80211 from there.
When we add multiple RX queues, we can then pass the appropriate
NAPI struct properly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
a bit of content:
* mesh fixes/improvements from Alexis, Bob, Chun-Yeow and Jesse
* TDLS higher bandwidth support (Arik)
* OCB fixes from Bertold Van den Bergh
* suspend/resume fixes from Eliad
* dynamic SMPS support for minstrel-HT (Krishna Chaitanya)
* VHT bitrate mask support (Lorenzo Bianconi)
* better regulatory support for 5/10 MHz channels (Matthias May)
* basic support for MU-MIMO to avoid the multi-vif issue (Sara Sharon)
along with a number of other cleanups.
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Merge tag 'mac80211-next-for-davem-2015-08-14' into next
Another pull request for the next cycle, this time with quite
a bit of content:
* mesh fixes/improvements from Alexis, Bob, Chun-Yeow and Jesse
* TDLS higher bandwidth support (Arik)
* OCB fixes from Bertold Van den Bergh
* suspend/resume fixes from Eliad
* dynamic SMPS support for minstrel-HT (Krishna Chaitanya)
* VHT bitrate mask support (Lorenzo Bianconi)
* better regulatory support for 5/10 MHz channels (Matthias May)
* basic support for MU-MIMO to avoid the multi-vif issue (Sara Sharon)
along with a number of other cleanups.
Change the FW debug trigger tlv to include a monitor only
option. Setting this option to true will cause fw dump triggers
to only collect monitor data and skip other dumps such as
SMEM, SRAM, CSR, PRPH, etc.
This option is used when accessing the different parts of the
firmware memory is not wanted and can cause unwanted behavior
like when debugging TX latency.
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Family 8000 products has 2 embedded processors, the first
known as LMAC (lower MAC) and implements the functionality from
previous products, the second one is known as UMAC (upper MAC)
and is used mainly for driver offloads as well as new features.
The UMAC is typically “less” real-time than the LMAC and is used
for higher level controls.
The UMAC's code/data size is estimated to be in the mega-byte arena,
taking into account the code it needs to replace in the driver and
the set of new features.
In order to allow the UMAC to execute code that is bigger than its code
memory, we allow the UMAC embedded processor to page out code pages on
DRAM.
When the device is master on the bus(PCI) the driver saves the UMAC's
image pages in blocks of 32K in the DRAM and sends the layout of the
pages to the FW. The FW can load / unload the pages on its own.
The driver can support up to 1 MB of pages.
Add paging mechanism for the UMAC on PCI in order to allow the program
to use a larger virtual space while using less physical memory on the
device.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Move the TX PN assignment (for CCMP only) to the driver. This prepares
the driver for future DSO (driver segmentation offload) where it will
split an SKB into multiple MPDUs by itself.
For TDLS, split out the CCMP TX command handling so that it won't get
a PN assigned, the firmware assigns the PN in that case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
TCP software implementation on the host requires extensive computing
power. Offloading even some of the TCP/IP stack to the NIC might save
a significant overhead. In order to enable this feature on our hw,
we need to configure it first. Once done, we mark this capability,
to be advertised later to the OS via ieee80211_register_hw.
The driver Rx indications for TCP Checksum is integrated within the
standard Rx status. The driver responds to those indications as follows:
If the frame was tested by hw and checksum ok report CHECKSUM_UNNECESSARY.
Otherwise, report CHECKSUM_NONE.
Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
As the firmware is slowly running out of command IDs and grouping of
commands is desirable anyway, the firmware is extending the command
header from 4 bytes to 8 bytes to introduce a group (in place of the
former flags field, since that's always 0 on commands and thus can
be easily used to distinguish between the two.
In order to support this most easily in the driver widen the command
command ID used in the command sending functions and encode the new
values (group and version) in the ID. That way existing code doesn't
have to be changed (since the higher bits are 0 automatically) and
newer code can easily use the new ID generation function to create a
value to use in place of just the command ID.
Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
ToF is a time based method for measurement of the WiFi device
location within a WiFi environment. The driver functionality provided
by this patch is the interface for communication with FW and receiving
location related updates from the FW. The interface provided by this
patch is via debugfs.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
In the mvm driver, neither the old command nor the return value
are used, so remove them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The current key offset assignment algorithm always uses the lowest
unused key offset, which will potentially lead to issues when the
firmware will change to take the key material for TX from the key
table rather than from the TX command.
In order to avoid those issues (and avoid forgetting about them)
change the key offset allocation algorithm now to avoid reusing key
offsets quickly.
The new algorithm always picks as the next offset the least recently
freed offset, i.e. the offset that has been unused for the longest
amount of time. This is implemented by having a generation counter
for each key offset that is incremented every time a key is deleted,
except for the one that's deleted, which is reset to zero. Thus the
highest counter is the key that's been unused longest.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When introducing multiple RX queues, a single NAPI struct will not
be sufficient. Instead of trying to store multiple, simply change
the API to have the NAPI struct passed to the RX function. This of
course means that drivers using rx_irqsafe() cannot use NAPI, but
that seems a reasonable trade-off, particularly since only two of
all drivers are currently using it at all.
While at it, we can now remove the IEEE80211_RX_REORDER_TIMER flag
again since this code path cannot have a napi struct anyway.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
After the new ciphers CCMP-256 and GCMP-128/256 were implemented,
wpa_supplicant could start negotiating them and use the software
implementation. This, however, breaks D3 behaviour in the driver
since it means that WoWLAN will not be possible.
To avoid breaking that feature, advertise only ciphers that the
hardware supports.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Currently, loading the firmware fails when it has higher API or CAPA
bits than the driver supports. That's an issue with integration.
At the same time, actually using api[0] and capa[0] will become
confusing when we also have api[1] and capa[1], and it's almost
certain that we'll mix up the bits and use the bits for api[1] with
api[0] by accident.
Avoid all this by translating the API/CAPA bits to the regular kernel
test_bit() format, and also providing wrapper functions. Also use the
__bitwise__ facility of sparse to check that we're testing the right
one.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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>
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>
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>
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>
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>
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>
commit b112889c5a ("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: b112889c5a ("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>
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>
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>
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>
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>
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>
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>
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>
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>
The only other way to catch these would have been to monitor
the Tx deauth event, but we can send a deauth when we roam.
So it would have been tricky to make sure we capture the
connection losses only.
Define a separate trigger for the connection losses to make
it easier to catch them.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The current code has a lot of duplicates of printing into a buffer
(while having to make sure it's NUL-filled and -terminated) and
then passing that to the debug trigger collection.
Since that's error-prone, instead make the debug trigger collection
function take a format string and format arguments (with compiler
validity checking) and handle the buffer internally.
This makes one behavioural change -- instead of sending the whole
buffer to userspace (clearing is needed to not leak stack data) it
just passes the actual string (including NUL-terminator.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Fix spelling error across the driver.
Modified only comments and prints.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
of small fixes, cleanups and internal features we have:
* VHT support for TDLS and IBSS (conditional on drivers though)
* first TX performance improvements (the biggest will come later)
* many suspend/resume (race) fixes
* name_assign_type support from Tom Gundersen
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Merge tag 'mac80211-next-for-davem-2015-03-30' into iwlwifi-next
Lots of updates for net-next; along with the usual flurry
of small fixes, cleanups and internal features we have:
* VHT support for TDLS and IBSS (conditional on drivers though)
* first TX performance improvements (the biggest will come later)
* many suspend/resume (race) fixes
* name_assign_type support from Tom Gundersen
The str/len arguments to iwl_fw_dbg_trigger_simple_stop() aren't used,
and for a simple trigger don't really need to be used as the trigger
code itself encodes the reason, so remove them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Our testers need to know the number of scans performed while in
net-detect mode before the device wakes up. The firmware already
passes this information to the driver, so we can save it and report it
in a debugfs entry.
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>
We will be able to add more events, such as MLME events and
others. The low level driver may be interested in knowing
about these events to dump firmware data upon failures, or
to change parameters in case connection attempts fail etc...
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Sometimes we will want to configure the timeouts for the
Tx queues based on the vif type. Allow to do that using the
trigger mechanism.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
There is no need to implement the enable_scan_iteration_notif handling
explicitly and there's no reason not to export the current value. So
use debugfs_create_bool() instead.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
In nic restart flow we inform mac80211 that scan was aborted, but it was
based only on scan_status which is not set by UMAC scan. Fix that.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
According to FW methodology, the capability bits should be the only ones
that change per-HW. The API bits should remain constant across different
HWs.
Currently this is not the case with multi-source LAR (API bit 9). Assign
a new capability bit to eventually replace the API bit. Until the API bit
can be deprecated, the driver will check either to enable multi-source
LAR.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If, on a GO, the CSA time event fails to be scheduled, continue the
flow towards mac80211's state machine so it doesn't get stuck, but
report an error later on the post switch which will cause mac80211
to tear down the operation. This ensures nothing gets stuck due to
the scheduling failure.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
The firmware was not using the new API, so we don't need to
differentiate between the different stages of this new API.
The main difference here is that most of the hard coded
values are not sent through the command anymore.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When we associate we always need to update the quotas. This
fixes a bug for cases in which quotas weren't udapted after
association.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
When moving to the D3 FW give it the valid MCC from the D0 FW. When
returning from D3 to D0, query the D3 FW for the latest MCC, as
it might have changed internally. This MCC will be replayed to the D0 FW
when it boots.
Signed-off-by: Jonathan Doron <jonathanx.doron@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
For some configurations, the driver should get the MAC
address from the hardware registers and not from the
regular locations. Since the parsing of the MAC address
is the same regardless of its source, continue the regular
code path (parsing) after we read the registers.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This module parameter is useful for debugging NVM and LAR related issues.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
If LAR is supported in TLV, but the NVM does not enable it, then disable
LAR support and ignore the TLV's bit that enabled LAR.
Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
