When we stop the Tx DMA channels, we poll bits 16:31 in
FH_TSSR_RX_STATUS_REG. From 4965 and up, only the bits 16:26 are legal.
Bits 27:31 are not used and are always unset.
Polling them will lead to fail on timeout but since the timeout is quite
small, the stall was not felt.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Intel Wireless WiFi Next Gen AGN support two major categories:
1. Intel Wireless WiFi 4965 AGN device
2. Intel Wireless-N/Advanced-N/Ultimate-N family
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
ucode errors were redefined in new ucode images and all new errors
were showing as advanced sysasserts which was misleading. new errors
are not sequential so additional lookup table added. errors do not
overlap so both are used to support older and newer ucode images.
Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
To enable 6050 series Gen 2 devices:
1) new PCI_IDs are added;
2) new EEPROM version and calibration version numbers defined;
3) new hardware REV number defined;
Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
For newer devices (6000g2a and 6000g2b), the sensitivity table send to
uCode require additional table entries to help sensitivity calibration.
All the additional entries has fix data for now, but do expect the value
will be change in the future when device become more stable.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Code clean up to change name from having 5000 as part of name which easy
to confuse and think it is for 5000 series devices to more
generic _agn name since it is being used by multiple _agn devices.
No functional changes.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
"Flush" request can come from two different sources, it can either from
mac80211, or from device when the operation is needed. Here
adding the support for device issue "flush" request.
When receive tx complete with status is TX_STATUS_FAIL_RFKILL_FLUSH,
issue REPLY_TXFIFO_FLUSH command to uCode to flush out all the tx frames
in queues.
In this condition, since mac80211 has no knowledge of "flush" operation,
driver need to stop all the tx queues and wait for the operation
completed before wake up the queues for frames transmission.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Adding flush callback support in the driver. Two type of flush can be
issued by mac80211:
1. drop = true: frame drop is ok, issue REPLY_TXFIFO_FLUSH host command
to uCode to drop all the frames in tx fifo queues; then return the
control back to mac80211
2. drop = false: wait for either all the frames in tx fifo queues been
transmitted, or timeout; then return the control back to mac80211
If the flush request coming from mac80211, mac80211 will make sure there
are no additional frames push down to driver before flush operation is
completed.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
When parsing TLV during loading firmware, if encounter any TLV error,
log the error message to help debugging.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
fw_restart module parameter was broken by the recent check for stuck
queue patch, driver check the fx_restart module parameter
before reload the firmware; but the stuck queue timer kick in after
firmware error and reload the firmware even fw_restart=0. In this case,
driver should not reload the firmware, it is important to help debugging
uCode error.
The only case we can ignore the module parameter is when user request
firmware reload from debugfs, which can bypass the checking and perform
firmware reload all the time.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
When there is a firmware error or the firmware is reloaded for some other
reason we currently clear all station information, including keys
associated with them. A problem is that we do not clear some other
information regarding keys that are not stored in the station structs.
The consequence of this is that when the device is reconfigured after the
firmware reload we can, among other things, run out of key indices.
This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=16232http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2221
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Radio calibration (chain noise and sensitivity) should be allowed to
be disabled from debugfs if compiled with CONFIG_IWLWIFI_DEBUGFS. For both
6000g2a and 6000g2b, the parameters are missing in "cfg", which cause
user can not disable the radio calibration manually; add the support to
allow the operation.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
This message is encountered regularly and we need to take a closer look at
the circumstances under which it is printed before presenting errors to
users.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
If RTS/CTS protection is needed for HT, wait until get operational
notification from mac80211, then inform uCode to switch to RTS/CTS
through RXON command.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
When resuming from hibernate or suspend,
the status of the rfkill switch isn't
known since it might have been toggled
while the system was asleep. Therefore,
we need to read out the status at resume
time to make sure the system knows about
an up-to-date status.
Reported-by: Mark Tung <mark.y.tung@intel.com>
Tested-by: Mark Tung <mark.y.tung@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
The rate table in the bcast LQ is computed only when the station is
allocated, and chooses the lowest rate for the band. Because of when this
occurs, this is the 2.4 GHz band and uses the 0x420a (CCK, 1 Mbps) rate. In 5 GHz
beaconing mode, this rate will prevent beacons from being sent and any other
packets from being received.
We can fix this by re-initializing the bcast station's LQ command when the
channel is changed.
Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
For some devices, especially the upcoming new devices, the plcp error
rate is different. Before the correct error rate can be determine, also
for the debugging purpose; add the mechanism to disable plcp error checking
which cause radio reset happen.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Different devices have different calibration requirement,
some need DC calibration and some don't; make it a cfg parameter
for easy management.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
This bit need to be set for both RTS/CTS or CTS-to-self protection, if
CTS-to-self is used, then uCode will check the RXON_FLG_SELF_CTS_EN
status. Change the name from TX_CMD_FLG_RTS_CTS_MSK to TX_CMD_FLAG_PROT_REQUIRE_MSK
to match the behavior of the bit setting.
Also update comments to reflect which hardware uses which of the TX command
flags.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
When building tx command, always set TX_CMD_FLAG_PROT_REQUIRE_MSK
for 5000 series and up.
Without setting this bit the firmware will not examine the RTS/CTS setting
and thus not send traffic with the appropriate protection. RTS/CTS is is
required for HT traffic in a noisy environment where, without this setting,
connections will stall on some hardware as documented in the patch that
initially attempted to address this:
commit 1152dcc28c
Author: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date: Fri Jan 15 13:42:58 2010 -0800
iwlwifi: Fix throughput stall issue in HT mode for 5000
Similar to 6000 and 1000 series, RTS/CTS is the recommended
protection mechanism for 5000 series in HT mode based on the HW design.
Using RTS/CTS will better protect the inner exchange from interference,
especially in highly-congested environment, it also prevent uCode encounter
TX FIFO underrun and other HT mode related performance issues.
For 3945 and 4965, different flags are used for RTS/CTS or CTS-to-Self
protection.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
commit 3474ad635d
Author: Johannes Berg <johannes.berg@intel.com>
Date: Thu Apr 29 04:43:05 2010 -0700
iwlwifi: apply filter flags directly
broke multicast. The reason, it turns out, is that
the code previously checked if ALLMULTI _changed_,
which the new code no longer did, and normally it
_never_ changes. Had somebody changed it manually,
the code prior to my patch there would have been
broken already.
The reason is that we always, unconditionally, ask
the device to pass up all multicast frames, but the
new code made it depend on ALLMULTI which broke it
since now we'd pass up multicast frames depending
on the default filter in the device, which isn't
necessarily what we want (since we don't program it
right now).
Fix this by simply not checking allmulti as we have
allmulti behaviour enabled already anyway.
Reported-by: Maxim Levitsky <maximlevitsky@gmail.com>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Remove the reference to non-exist function in iwlcore
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Break out of loop and log the error message when encounter error; this is
better approach than using "goto".
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
All the calibrations are "agn" only functions, move from iwlcore to
iwlagn.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
agn and 3945 has different statistics_notif data structure; since 3945
has it statistics_notif data structure inside the _3945 portion of
iwl_priv, it make sense to move the agn statistics_notif into _agn
portion.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
To avoid having unnecessary functions in iwlcore.ko, those that
are not shared by agn and 3945, move agn specific rx related code
to iwl-agn-rx.c.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
errors are defined in hex but displayed as decimal. displaying as hex
debugging easier and eliminated having to manually convert.
Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
When station management calls to ucode return
an error we could previously do nothing, but
now that almost all calls are synchronous we
can actually let the error bubble up. Use EIO
as the error as it best indicates a problem
with the device.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Key management can use sync commands
instead of asynchronous ones to have
better error checking.
Also add checks that the commands all
should have the mutex held.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Now that the ampdu_action callback can sleep,
we can use the mutex to properly protect the
aggregation data, and return useful errors if
they should happen.
Also, add some sleep and mutex debugging so
we won't call any of the functions that now
require being able to sleep and/or the mutex
to be held in an invalid context.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
When we detect that not all antennas are
properly connected, we simply disable the
associated chains, but never notify the
user at all. Print out a warning so it is
obvious that happened and we know where
to start looking for related issues.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
iwl4965_rx_mpdu_res_start is not 4695 specific, so rename it to more
general name iwl_rx_mpdu_res_start.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Rename rxq->dma_addr to rxq->bd_dma to better emphasize that the
physical address stands for the receive buffer descriptor's address.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Cancel scheduled run time calibration work when interface is going
down.
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Test for null pointer prior to access.
Print "Not Allocated" if null pointer.
Signed-off-by: Dor Shaish <dor.shaish@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
The length contained in the status word doesn't
include the status word's length itself, so we
need to account for that for tracing.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
The flow id (scd_flow) in a compressed BA packet should match the txq_id
of the queue from which the aggregated packets were sent. However, in
some hardware like the 1000 series, sometimes the flow id is 0 for the
txq_id (10 to 19). This can cause the annoying message:
[ 2213.306191] iwlagn 0000:01:00.0: Received BA when not expected
[ 2213.310178] iwlagn 0000:01:00.0: Read index for DMA queue txq id (0),
index 5, is out of range [0-256] 7 7.
And even worse, if agg->wait_for_ba is true when the bad BA is arriving,
this can cause system hang due to NULL pointer dereference because the
code is operating in a wrong tx queue!
Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Signed-off-by: Pradeep Kulkarni <pradeepx.kulkarni@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
We are seeing some race conditions between incoming station management
requests (station add/remove) and the internal unassoc RXON command that
modifies station table. Modify these flows to require the mutex to be held
and thus serializing them.
This fixes http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2207
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Using ieee80211_find_sta() needs to be under
RCU read lock, which iwlwifi currently misses,
so fix it.
Cc: stable@kernel.org
Reported-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
