In rt2800lib.c the rt2800_init_eeprom function the same eeprom
words were read multiple times, due to inefficient ordering of the
eeprom checks.
Reorder the checks so that each EEPROM word only has to be read once.
Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The patch
rt2x00: Optimize register access in rt2800pci
from Helmut Schaa missed one register call, namely
the rt2800_register_multiwrite which should be changed
to rt2x00pci_register_multiwrite.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Add recycling functionality to rt2x00usb_register_read_async.
When the callback function returns true, resubmit the urb to
read the register again.
This optimizes the rt2800usb driver when multiple TX status reports
are pending in the register, because now we don't need to allocate
the rt2x00_async_read_data and urb structure each time.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When no TX status was available, the default timeout
of 20ms is a bit high. The frame is highly likely already
send out, so the TX status should be available within
only a few milliseconds.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Currently, mac80211 handles MIC failures differently
depending on whenever they are detected by the stack's
own software crypto or when are handed down from the
driver.
This patch tries to unify both by moving the special
branch out of mac80211 rx hotpath and into into the
software crypto part. This has the advantage that we
can run a few more sanity checks on the data and verify
if the key type was TKIP. This is very handy because
several devices generate false postive MIC failure
reports. Like carl9170, ath9k and wl12xx:
<http://www.spinics.net/lists/linux-wireless/msg68494.html>
"mac80211: report MIC failure for truncated packets in AP mode"
Cc: Luciano Coelho <coelho@ti.com>
Cc: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
By reading the "driver_state" debugfs value we get all the important
state information from the wl12xx driver. This helps testing and
debugging, particularly in situations where the driver seems "stuck".
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When operating as AP, the TX queues are not stopped when we start
recovery. mac80211 is notified only after the fact. When there is
pending TX, it will be queued even after the FW is down. This leads to
situations where the TX queues are stopped (because of the TX-watermark
mechanism), and are never woken up when we return from recovery.
Fix this by explicitly stopping the TX queues when before initiating
recovery.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This entry is useful for debugging the driver state machine during
recovery.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When there's a change in the basic rates of the AP, reconfigure relevant
templates with the new rates.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Use the minimal rate configured in the basic rates set as the AP
broadcast and multicast rate. The minimal rate is used to ensure weak
links can still communicate.
When the basic rates contains at least one OFDM rate, configure all
unicast TX rates to OFDM only.
Unify rate configuration on initialization and on change notification
into a single function.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When performing recovery, print the firmware version and program
counter (by reading the SCR_PAD4 register). The value of the firmware
program counter during assert can be useful for debugging.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
We use a long timeout (2 seconds) when sending commands to the FW.
When a command times out, it means the FW is stuck, and we should
commence recovery.
This should make recovery times shorter as we'll recover on the first
timeout indication.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
New AP-mode FWs filter external beacons by default. Disable this
filtering on start up so we can properly configure ERP protection.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Use the wiphy RTS and fragmentation thresholds for initializing the FW
when possible. This mitigates a bug where previously set values are
forgotten after interface down/up.
Add checks before settings these values to ensure they are valid. Use
default values when invalid thresholds are configured.
Update the default RTS threshold to the maximum value given by the
specification.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Initialize AP specific BT coexitance parameters to default values and
enable them in AP mode.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
It is preferred to use the setter that to set queue_mapping directly.
This also helps backporting in compat-wireless.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When packets arrive with a RX descriptor indicating corruption, discard
them.
In general white-list the RX descriptor status to prevent rouge data
from being sent up.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Frames are considered pending when they reside in the driver TX queue or
already queued in the FW.
This notion of "pending" is appropriate for power save considerations in
STA mode, but not necessarily in other modes (for instance P2P-GO).
[Fixed a sparse warning about missing "static" in a function
declaration -- Luca]
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
The FW can dynamically manage its internal TX & RX memory pools, moving
blocks from one pool to another when necessary. This can significantly
improve performance. Currently this feature is enabled only for 128x.
Enable dynamic memory for 127x as well. Other parameters in the memory
configuration structure may need to be fine tuned, as the optimal values
for these may change once dynamic memory is enabled.
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
The driver stops sending TX packets when either there aren't enough
memory blocks, or it runs out of TX descriptors. The driver continues to
send packets to the FW only when more memory blocks are available.
The FW might free TX descriptors without freeing the corresponding
memory blocks, especially when dynamic memory is enabled. In cases where
memory blocks are not freed at all, the driver will keep waiting for
more memory blocks indefinitely.
Fix this by clearing the WL1271_FLAG_FW_TX_BUSY flag when there are
available TX descriptors.
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
The 128x/AP firmware does not yet support dynamic memory. Temporarily,
the memory configuration for the 127x was used both for 127x/AP as well
as 128x/AP. Since the two chips don't have the same number of memory
blocks, TP was significantly degraded.
This hasn't been fine tuned yet, but using the base 128x numbers
(without dynamic memory) seems to yield much better results (around 30%
more). Additional fine tuning will be required in the future.
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When configuring ACX_WAKE_UP_CONDITIONS (before entering psm), we
tell the firmware to wake up once in N DTIMs/beacons.
Allow control of this value via debugfs (for debugging purposes).
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Reducing the retries of sending PS exit packets to the peer AP.
That fix is to avoid sending unrealizable number of PS exit packets
in case of ap lost.
Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Add support to FM WLAN coexistence (STA only). Some WiFi harmonics
may interfere with FM operation, to avoid this problem special
coexistence techniques are activated around some FM frequencies.
Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When working in ibss mode, we don't configure rate policy per station
(as we use the same link for multiple stations), so currently the
1mb/s rate is being used.
Instead, configure the firmware to use the whole 11b rates by default.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
ieee80211_reconfig() sets most of the "changed" flags regardless
of the actual change (e.g. BSS_CHANGED_ASSOC will be set even if
the interface is still not associated). in this case the driver
will issue some unneeded commands.
Since the driver relies solely on the BSS_CHANGED_ASSOC flag,
without checking if there was an actual change, it will end up
issuing unjoin() and dummy_join() commands, although it was
never associated and should just remain idle.
Avoid it by checking the actual state change, in addition to the
"changed" flag.
(there seem to be more redundant configuration commands being
issued, but they shouldn't harm)
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
When debugging, reduce the padding size from each rx packet, to
get the actual packet size (so comparing it against a cap file
will be easier)
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
Fix mismatch between the REF CLK and TCXO CLK information that is
set in the platform data and the NVS, so we override what comes
from the NVS and replace it with what comes from the platform data.
[Small fix in a comment -- Luca]
Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
The elp_work is being enqueued on wl1271_ps_elp_sleep, but doesn't get
cancelled on wl1271_ps_elp_wakeup. This might cause immediate entrance
to elp when the wl->mutex is being released, rather than using the delayed
enqueueing optimization.
Cancel elp_work on wakeup request, and add a new WL1271_FLAG_ELP_REQUESTED
flag to further synchronize the elp actions.
[Fixed a couple of typos in some comments -- Luca]
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
commit d05c806 ("wl12xx: rearrange some ELP wake_up/sleep calls")
introduced a bug in which wl1271_ps_elp_wakeup() was called instead
of wl1271_ps_elp_sleep() after completing the tx work.
Reported-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
End-of-transaction flag should be set when working with
wl127x chip on AP mode.
Thanks Ido Yariv <ido@wizery.com> for the guidance with that.
Signed-off-by: Shahar Levi <shahar_levi@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
If an interface type changes from a type that is
only supported on the PAN context (e.g. P2P GO)
to a type that is supported on the BSS context,
and the BSS context is not in use, then we need
to use the BSS context instead of changing the
device type within the context. To achieve this,
refuse the type change, which causes a down/up
cycle that will allocate the BSS context for the
interface.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
The current RXON checking doesn't verify that
the channel is valid (or at least non-zero),
so add that. Also, add a WARN() so we get a
stacktrace, and capture a bitmask of errors
in order to capture all necessary information
in the warning itself (in case the previous
messages are snipped off.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This header file isn't used, and if we ever need
these definitions they shouldn't be added to a
driver but rather to the common 802.11 include
file that has all frame definitions. Thus, just
remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
All agn devices use the same eeprom semaphore and calib version routines.
Delete the indirection and move the semaphore routines to where they are
used and make static.
Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
All agn devices use the same module parameter structure. Delete the
indirection and access the structure diretly.
Signed-off-by: Don Fry <donald.h.fry@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
New microcode versions use the good CRC threshold
field differently, as a flag, and in that case we
should set it to 1/0 instead of 1/65535 for an
active/passive scan.
The new behaviour is advertised by the uCode with
a feature flag.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
No functional changes, separate the connect and disconnect sequences in
RXON commit function, easier to read and understand.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
The WoWLAN resume code will have to essentially
do a restart, but without going through the work
struct. To support that, refactor the restart by
splitting out the preparation code into a new
function.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
There are a few cases like the WoWLAN support
I'm writing that require attempting to access
the NIC when it is known that it might not be
accessible, e.g. after the system woke up and
the platform might have reset the device.
To avoid messages in this case, introduce the
new function iwl_grab_nic_access_silent(), it
will only return an error status.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
If a device error happens while the uCode is
being loaded or initialised, we will attempt
to restart the device (which will likely fail
again, but that's not the issue here). During
this new restart, we turn off the device, but
as the uCode failed to initialise it already
is turned off. As a consequence, grabbing NIC
access will fail and cause excessive messages
and hangs.
To fix this issue, introduce a new status bit
and only attempt to reprogram the device when
it isn't already disabled.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
The tx_headroom required for mwl8k driver is 32 bytes and it
can use the space for 802.11 header received from mac80211.
mwl8k considers the smallest 802.11 frame (CTS2self of 10
bytes) that can be received from mac80211 to compute the
extra_tx_headroom as 22 (32 - 10) bytes.
When the wireless interface is part of bridge, this
extra_tx_headroom requirement results in a memcpy in
mac80211 (in function pskb_expand_head) for all the data
frames needing L2 forwarding/bridging, when NET_SKB_PAD is
defined as 32. This patch reduces the extra_tx_headroom by
8 bytes so that memcpy of data frames in mac80211 is
avoided in this case.
The resize will be required in driver for frames with 802.11
header size of less than 18 bytes.
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Pradeep Nemavat <pnemavat@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Remove all the convoluted hacks in the driver and simplify things
by making use of mac80211's LED triggers.
Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
