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When the firmware restarts in a situation in which any station
has no queue reserved anymore because that queue was used, the
code will crash trying to access the queue_info array at the
offset 255, which is far too big. Fix this by checking that a
queue is actually reserved before writing its status.
Fixes: 8d98ae6eb0d5 ("iwlwifi: mvm: re-assign old queues after hw restart in dqa mode")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Mistakenly, the driver is trying to load the 8000C firmware with an
incorrect name (i.e. with two hyphens where there should be only one)
and that fails. Fix that by removing the hyphen from the format
macro.
Fixes: e1ba684f762b ("iwlwifi: 8000: fix MODULE_FIRMWARE input")
Signed-off-by: Jürg Billeter <j@bitron.ch>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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A recent firmware change seems to have enabled thermal zones on the
iwlwifi driver. Unfortunately, my device fails when registering the
thermal zone. This doesn't stop the driver from attempting to unregister
the thermal zone at unload time, triggering a NULL pointer deference in
strlen() off the thermal_zone_device_unregister() path.
Don't unregister if name is NULL, for that case we failed registering.
Do the same for the cooling zone.
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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That's the default now, no need for makefiles to set it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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__bitwise__ used to mean "yes, please enable sparse checks
unconditionally", but now that we dropped __CHECK_ENDIAN__
__bitwise is exactly the same.
There aren't many users, replace it by __bitwise everywhere.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Akced-by: Lee Duncan <lduncan@suse.com>
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This cast is no longer needed.
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Cc: Intel Linux Wireless <linuxwifi@intel.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Since offset is zero, it's not necessary to use set function. Reset
function is straightforward, and will remove the unnecessary add
operation in set function.
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
wireless-drivers-next patches for 4.10
Major changes:
iwlwifi
* finalize and enable dynamic queue allocation
* use dev_coredumpmsg() to prevent locking the driver
* small fix to pass the AID to the FW
* use FW PS decisions with multi-queue
ath9k
* add device tree bindings
* switch to use mac80211 intermediate software queues to reduce
latency and fix bufferbloat
wl18xx
* allow scanning in AP mode
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
* Finalize and enable dynamic queue allocation;
* Use dev_coredumpmsg() to prevent locking the driver;
* Small fix to pass the AID to the FW;
* Use FW PS decisions with multi-queue;
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git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes
* some fixes for suspend/resume with unified FW images;
* a fix for a false-positive lockdep report;
* a fix for multi-queue that caused an unnecessary 1 second latency;
* a fix for an ACPI parsing bug that caused a misleading error message;
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iwlmvm currently uses dev_coredumpm() to collect multiple
buffers, but this has the downside of pinning the module
until the coredump expires, if the data isn't read by any
userspace.
Avoid this by using the new dev_coredumpsg() method. We
still copy the data from the old way of generating it, but
neither hold on to vmalloc'ed data for a long time, nor do
we pin the module now.
Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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New firmwares support dynamic queue allocation (DQA), which enables
on-demand allocation of queues per RA/TID, instead of allocating them
statically per vif. This allows an AP to send, for instance, BE
traffic to STA2 even if it also needs to send traffic to a sleeping
STA1, without being blocked by the sleeping station.
The implementation in the driver is now ready, so we can enable this
feature by default when running firmwares that support it.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
[reworded the commit message]
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Currently when configuring the cab queue the scheduler is configured
without station id - which results in station id 0.
In DQA mode this causes firmware to assert later on when the actual
station 0 is added with an empty tfd_queue_mask.
Fix that by configuring the queue to the broadcast station.
This is a bit trickier since the queue should not be included in the
tfd_queue_mask of the ADD_STA since it is a multicast queue, and the
tfd_queue_mask is only unicast queue. As a result the queue should be
enabled only after the broadcast station is added.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When a peer associates, the firmware will soon want to know
its AID to be able to compute the TIM IE by itself.
In DQA, the firmware has all the information it needs to
update the TIM internally. The only missing part is the
AID.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Instead of passing DRV_NAME pass a string that
represents the reason for the interrupt.
Signed-off-by: Sharon Dvir <sharon.dvir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When using RSS on 9000 series devices, we can't rely on processing the
received frames for station powersave handling, since they could be
processed on different CPUs and out of order.
In order to still manage the powersave of stations, the firmware sends
a notification on sleep->wake, wake->sleep and - for U-APSD - frames
received with PM while already sleeping (with the TID.)
With this, the driver can set AP_LINK_PS, which is required for real
parallel RX. In addition, this requires checking for PS-Poll frames
and calling ieee80211_sta_pspoll() appropriately.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When a STA has deferred traffic to TX, an appropriate bit
is turned on in %deferred_tx_frames to indicate deferred
traffic. This marking is never turned off, resulting in
iterating over TIDs with no deferred traffic.
Although this didn't cause any failures/errors/bugs, there
is still no point of iterating over these TIDs when not
needed.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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In DQA mode the TXQs are allocated on demand, so make
sure the sniffer STA tfd_queue_msk isn't set.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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If a TXQ's marking as a reserved queue is removed,
when removing the STA the driver might try to access
out of bounds memory. Make sure the reserved queue
is freed only if it is still reserved.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When a TXQ's owner is changed, the FW is indeed notified, but
the driver doesn't update the current metadata to reflect the
owner change. Fix that.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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With unified images, we need to make sure the net-detect scan is
stopped after resuming, since we don't restart the FW. Also, we need
to make sure we check if there are enough scan slots available to run
it, as we do with other scans.
Fixes: commit 23ae61282b88 ("iwlwifi: mvm: Do not switch to D3 image on suspend")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The SPLC data parsing is too restrictive and was not trying find the
correct element for WiFi. This causes problems with some BIOSes where
the SPLC method exists, but doesn't have a WiFi entry on the first
element of the list. The domain type values are also incorrect
according to the specification.
Fix this by complying with the actual specification.
Additionally, replace all occurrences of SPLX to SPLC, since SPLX is
only a structure internal to the ACPI tables, and may not even exist.
Fixes: bcb079a14d75 ("iwlwifi: pcie: retrieve and parse ACPI power limitations")
Reported-by: Chris Rorvick <chris@rorvick.com>
Tested-by: Paul Bolle <pebolle@tiscali.nl>
Tested-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When we sync the RX queues the driver waits to receive echo
notification on all the RX queues.
The wait queue is set with timeout until all queues have received
the notification.
However, iwl_mvm_rx_queue_notif() never woke up the wait queue,
with the result of the counter value being checked only when the
timeout expired.
This may cause a latency of up to 1 second.
Fixes: 0636b938214c ("iwlwifi: mvm: implement driver RX queues sync command")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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If the suspend flow fails, we restart the hardware to go back to
the D0 image (with non-unified images), but we don't comply with
the fw_restart module parameter. If something goes wrong when
starting the D3 image, we may want to debug it, so we should
comply with the fw_restart flag to avoid clearing everything up
and losing the firmware state when the error occurred.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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When a unified D0/D3 image is used, we don't restart the FW in the
D0->D3->D0 transitions. Therefore, the d3_test functionality should
not call ieee8021_restart_hw() when the resuming either.
Fixes: commit 23ae61282b88 ("iwlwifi: mvm: Do not switch to D3 image on suspend")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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In iwl_dbgfs_mem_read(), the len variable may become negative and is
compared to < 0 (an error case). Comparing size_t (which is unsigned)
to < 0 causes a warning on certain platforms (like i386):
drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c:1561:5-8: WARNING: Unsigned expression compared with zero: len < 0
To prevent that, use ssize_t for len instead.
Fixes: commit 2b55f43f8e47 ("iwlwifi: mvm: Add mem debugfs entry")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Emmanuel reports that when CMD_WANT_ASYNC_CALLBACK is used by mvm,
the callback will be called with the command queue lock held, and
mvm will try to stop all (other) TX queues, which acquires their
locks - this caused a false lockdep recursive locking report.
Suppress this report by marking the command queue lock with a new,
separate, lock class so lockdep can tell the difference between
the two types of queues.
Fixes: 156f92f2b471 ("iwlwifi: block the queues when we send ADD_STA for uAPSD")
Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc vfs updates from Al Viro:
"Assorted misc bits and pieces.
There are several single-topic branches left after this (rename2
series from Miklos, current_time series from Deepa Dinamani, xattr
series from Andreas, uaccess stuff from from me) and I'd prefer to
send those separately"
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (39 commits)
proc: switch auxv to use of __mem_open()
hpfs: support FIEMAP
cifs: get rid of unused arguments of CIFSSMBWrite()
posix_acl: uapi header split
posix_acl: xattr representation cleanups
fs/aio.c: eliminate redundant loads in put_aio_ring_file
fs/internal.h: add const to ns_dentry_operations declaration
compat: remove compat_printk()
fs/buffer.c: make __getblk_slow() static
proc: unsigned file descriptors
fs/file: more unsigned file descriptors
fs: compat: remove redundant check of nr_segs
cachefiles: Fix attempt to read i_blocks after deleting file [ver #2]
cifs: don't use memcpy() to copy struct iov_iter
get rid of separate multipage fault-in primitives
fs: Avoid premature clearing of capabilities
fs: Give dentry to inode_change_ok() instead of inode
fuse: Propagate dentry down to inode_change_ok()
ceph: Propagate dentry down to inode_change_ok()
xfs: Propagate dentry down to inode_change_ok()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
wireless-drivers-next patches for 4.9
Major changes:
iwlwifi
* work for new hardware support continues
* dynamic queue allocation stabilization
* improvements in the MSIx code
* multiqueue support work continues
* new firmware version support (API 26)
* add 8275 series support
* add 9560 series support
* add support for MU-MIMO sniffer
* add support for RRM by scan
* add support for "reverse" rx packet injection faking hw descriptors
* migrate to devm memory allocation handling
* Remove support for older firmwares (API older than -17 and -22)
wl12xx
* support booting the same rootfs with both wl12xx and wl18xx
hostap
* mark the driver as obsolete
ath9k
* disable RNG by default
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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When we unshare a queue, the ADD_STA was not properly
initialised.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The firmware has a new smart linker, and this table can now be
in ICCM or in SMEM. It is not hardcoded, but depends on code
size. Allow the full range.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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This define should really be TX_CMD_SEC_KEY_FROM_TABLE
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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FW versions older than -17 for 3160 and 7260 and older than -22 for
newer NICs are not supported anymore. Don't load these versions
and remove code that handles them.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The upper bound IWL_RATE_COUNT_LEGACY should be used
with a >= check, rejecting the value itself; fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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We were assigning the return value of iwl_mvm_ctdp_command() to a
variable, but never checking it. If this command fails, we should not
allow the interface up process to proceed, since it is potentially
dangerous to ignore thermal management requirements.
Fixes: commit 5c89e7bc557e ("iwlwifi: mvm: add registration to cooling device")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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The various TFD/TB helpers have two code paths depending on the
type of TFD supported, with variable shadowing due to the new if
branches. Move the fall-through code into else branches to avoid
variable shadowing. While doing so, rename some of the variables
and do some other cleanups (like removing void * casts of void *
pointers.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Add two new PCI IDs for the 9560 series.
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Move the init_dbg check to earlier in the function to simplify the
code.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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This is never really used anymore.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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There's no need to declare a list and then init it manually,
just use the LIST_HEAD() macro.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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There's no need to declare a list and then init it manually,
just use the LIST_HEAD() macro.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Currently it is logged as UNKNOWN.
Also, 0x6c seems to be the permanent ID for this command, remove
incorrect comment and uncomment the command from the commands
list.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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In order to access cached/paged memory, there are a couple of firmware
commands (one for UMAC and one for LMAC) that let the host access memory
and registers indirectly. Since this is done by the firmware on behalf
of the host, even if memory is paged out or cached, the host will
retrieve the memory as the firmware sees it (paged out memory will get
paged in).
Export this mechanism via a debugfs entry for both read and write
access.
WARNING: This mechanism has no protections at all. Invalid addresses may
crash or hang the firmware. Writing to arbitrary memory also comes with
no guarantees.
Signed-off-by: Ido Yariv <idox.yariv@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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There's no need for the common MAC context function to have an
if on AP mode, the values can be overridden in the AP-specific
function later. Clean that up by adding the full command as a
new parameter to the AP-specific function, and doing it there.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Add a new PCI ID for the 8265 series.
Signed-off-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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New function, reveals the diff between gp2 and host time.
Signed-off-by: Roee Zamir <roee.zamir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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Change PCIE and trans resource allocations to managed resources.
Signed-off-by: Sharon Dvir <sharon.dvir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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AP queue is properly released, but P2P queue isn't.
Fixes: commit 4c965139a3cd ("iwlwifi: mvm: support p2p device frames tx on dqa queue #2")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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