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2011-01-28ath9k: Fix a PLL hang issue observed with AR9485.Vivek Natarajan3-0/+27
When this PLL hang issue is seen, both Rx and Tx fail to work. The sqsum_dvc needs to be below 2000 for a good chip. During this issue the sqsum_dvc value is beyond 80000 and only a full reset can solve this problem. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k_hw: Add a function to read sqsum_dvc.Vivek Natarajan3-0/+20
Add a function to observe the delta VC of BB_PLL. For a good chip, the sqsum_dvc is below 2000. Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k_hw: Add RX filtersSujith Manoharan1-0/+2
The HW has separate filter masks for compressed/uncompressed BlockAcks and BlockAckRequests. Add them. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: use split rx buffers to get rid of order-1 skb allocationsFelix Fietkau3-24/+71
With this change, less CPU time is spent trying to look for consecutive pages for rx skbs. This also reduces the socket memory required for IP/UDP reassembly. Only two buffers per frame are supported. Frames spanning more buffers will be dropped, but the buffer size is enough to handle the required AMSDU size. Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k_hw: Fix INI fixupSujith Manoharan1-3/+3
Commit "ath9k_hw: move AR9280 PCI EEPROM fix to eeprom_def.c" changed the behavior of INI overriding which is needed only for PCI cards. Revert to the original check. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k_hw: Fix opmode initializationSujith Manoharan1-2/+2
Commit "ath9k_hw: Relocate Opmode initialization" moved the opmode initialization before the STA_ID1 register was programmed with defaults. This changed the original behaviour because the re-programming code doesn't take into account the existing value in the register. Both ath9k and ath9k_htc were not affected by this change because the opmode is re-initialized after every reset, when RX is started. Revert to the original behavior, except keep it outside the REGWRITE block. This would help remove extraneous opmode calls in the driver core. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath5k: remove debug_dump_skb() functionsBob Copeland2-30/+0
Now that rx and tx dumps go through the tracing infrastructure, we no longer need to keep these routines around. Signed-off-by: Bob Copeland <me@bobcopeland.com> Acked-by: Bruno Randolf <br1@einfach.org> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath5k: use tracing for packet tx/rx dumpBob Copeland3-6/+128
This adds a few tracepoints to ath5k driver transmit and receive callbacks in order to record packet traffic. We record the entire packet in the trace buffer so that the data can be extracted with trace-cmd and external plugins. Compared to the previous debugging calls, this approach removes an out-of-line function call from the tx and rx paths in the compiled-in-but-disabled case, while improving the ability to process the logged data. A new option, CONFIG_ATH5K_TRACER, is added so that one may disable the tracepoints completely. Signed-off-by: Bob Copeland <me@bobcopeland.com> Acked-by: Bruno Randolf <br1@einfach.org> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: Remove unused IEEE80211_WEP_NKIDBruno Randolf2-3/+0
IEEE80211_WEP_NKID is not used in ath9k any more since the key handling code has been moved to ath/. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath5k: Enable 802.11j 4.9GHz frequenciesBruno Randolf1-5/+6
This enables 4.9GHz frequencies in ath5k if they are allowed as indicated by the regulatory domain code. Currently this is MKK9_MKKC (0xfe). Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath: Add function to check if 4.9GHz channels are allowedBruno Randolf2-0/+8
This adds a helper function to ath/regd.c which can be asked if 4.9GHz channels are allowed for a given regulatory domain code. This keeps the knowledge of regdomains and defines like MKK9_MKKC in one place. I'm passing the regdomain code instead of the ath_regulatory structure because this needs to be called quite early in the driver inititalization where ath_regulatory is not available yet in ath5k. I'm using MKK9_MKKC only because this is the regdomain in the 802.11j enabled sample cards we got from our vendor. I found some hints in HAL code that this is used by Atheros to indicate 4.9GHz channels support and that there might be other domain codes as well, but as I don't have any documentation I'm just putting in what I need right now. It can be extended later. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath5k: Use local variable for capabilitiesBruno Randolf1-21/+18
Shorten some lines and make code more readable. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: fix tx queue index confusion in debugfs codeFelix Fietkau3-20/+21
Various places printing tx queue information used various different ways to get a tx queue index for printing statistics. Most of these ways were wrong. ATH_TXQ_AC_* cannot be used as an index for sc->tx.txq, because it is only used internally for queue assignment. One place used WME_AC_* as a queue index for sc->debug.stats.txstats, however this array uses the ath9k_hw queue number as well. Fix all of this by always using the ath9k_hw queue number as an index, and always looking it up by going through sc->tx.txq_map. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: fold struct ath_wiphy into struct ath_softcFelix Fietkau10-105/+52
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: remove the bf->aphy fieldFelix Fietkau2-24/+17
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: remove support for virtual wiphysFelix Fietkau10-951/+23
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: remove the virtual wiphy debugfs interfaceFelix Fietkau1-133/+4
It does not make much sense to keep the current virtual wiphy implementation any longer - it adds significant complexity, has very few users and is still very experimental. At some point in time, it will be replaced by a proper implementation in mac80211. By making the code easier to read and maintain, removing virtual wiphy support helps with fixing the remaining driver issues and adding further improvements. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: clean up the code that wakes the mac80211 queuesFelix Fietkau2-23/+18
Instead of spreading ath_wake_mac80211_queue() calls over multiple places in the tx path that process the tx queue for completion, call it only where the pending frames counter gets decremented, eliminating some redundant checks. To prevent queue draining from waking the queues prematurely (e.g. during a hardware reset), reset the queue stop state when draining all queues, as the caller in main.c will run ieee80211_wake_queues(hw) anyway. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: Fix power save usage count imbalance on deinitRajkumar Manoharan2-2/+2
While unloading the driver, the ps_usecount is incremented before configuring gpio registers in deinit_device. But it is failed to restore the ps_usecount after that. The problem is that the chip is forcibly moved to FULL SLEEP by radio_disable when mac80211 is reporting as idle though ps_usecount is not zero. This patch retores ps_usecount properly and ensures that the chip is always moved to full sleep only if ps usage count is zero which also helps in debugging deadbeef on multivif case. And also fixes the following warning. ath: DMA failed to stop in 10 ms AR_CR=0xdeadbeef AR_DIAG_SW=0xdeadbeef ath: Could not stop RX, we could be confusing the DMA engine when we start RX up ------------[ cut here ]------------ WARNING: at drivers/net/wireless/ath/ath9k/recv.c:536 ath_stoprecv+0xf4/0x100 [ath9k]() Cc: stable@kernel.org Cc: Paul Stewart <pstew@google.com> Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k_hw: Fix system hang when resuming from S3/S4Rajkumar Manoharan1-2/+1
The bit 6 & 7 of AR_WA (0x4004) should be enabled only for the chips that are supporting L0s functionality while resuming back from S3/S4. Enabling these bits for AR9280 is causing system hang within a few S3/S4-resume cycles. Cc: stable@kernel.org Cc: Jack Lee <jlee@atheros.com> Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k_htc: fix race conditions when stop deviceStanislaw Gruszka2-9/+15
We do not kill any scheduled tasklets when stopping device, that may cause usage of resources after free. Disable interrupts, kill tasklets and then works in correct order. Cc: stable@kernel.org Tested-by: Sujith <m.sujith@gmail.com> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: fix race conditions when stop deviceStanislaw Gruszka2-5/+9
We do not kill any scheduled tasklets when stopping device, that may cause usage of resources after free. Moreover we enable interrupts in tasklet function, so we could potentially end with interrupts enabled when driver is not ready to receive them. I think patch should fix Ben's kernel crash from: http://marc.info/?l=linux-wireless&m=129438358921501&w=2 Cc: stable@kernel.org Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath5k: correct endianness of frame durationBob Copeland1-3/+1
The ath5k version of ieee80211_generic_frame_duration() returns an __le16 for standard modes but a cpu-endian int for turbo/half/ quarter rates. Make it always return cpu-endian values. Signed-off-by: Bob Copeland <me@bobcopeland.com> Acked-by: Bruno Randolf <br1@einfach.org> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath5k: fix error handling in ath5k_hw_dma_stopBob Copeland1-2/+2
Review spotted a problem with the error handling in ath5k_hw_dma_stop: a successful return from ath5k_hw_stop_tx_dma will be treated as an error, so we always bail out of the loop after processing a single active queue. As a result, we may not actually stop some queues during reset. Signed-off-by: Bob Copeland <me@bobcopeland.com> Acked-by: Bruno Randolf <br1@einfach.org> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Reviewed-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28ath9k: fix misplaced debug codeFelix Fietkau2-8/+3
The commit 'ath9k: Add more information to debugfs xmit file.' added more debug counters to ath9k and also added some lines of code to ath9k_hw. Since ath9k_hw is also used by ath9k_htc, its code must not depend on ath9k data structures. In this case it was not fatal, but it's still wrong, so the code needs to be moved back to ath9k. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28carl9170: utilize fw seq counter for mgmt/non-QoS data framesChristian Lamparter4-0/+23
"mac80211 will properly assign sequence numbers to QoS-data frames but cannot do so correctly for non-QoS-data and management frames because beacons need them from that counter as well and mac80211 cannot guarantee proper sequencing." Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28carl9170: enable wake-on-lan feature testingChristian Lamparter1-0/+3
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-28carl9170: update fw/hw headersChristian Lamparter5-11/+71
This patch syncs up the header files with the project's main firmware carl9170fw.git. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-27ath9k: clean up enums and unused macrosMohammed Shafi Shajakhan2-6/+3
Remove unused macros and cleanup buffer_type enumeration Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-26Merge branch 'master' of ↵David S. Miller4-6/+11
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2011-01-26ath5k: ath5k_setup_channels cleanup and whitespaceBruno Randolf1-8/+3
Remove useless test_bit - it's not going to happen because of the way this function is called only when that bit is set. And fix some whitespace. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-26ath9k_hw: read and backup AR_WA register value even before chip reset on.Senthil Balasubramanian1-8/+9
We need to read and backup AR_WA register value permanently and reading this after the chip is awakened results in this register being zeroed out. This seems to fix the ASPM with L1 enabled issue that we have observed. The laptop becomes very slow and hangs mostly with ASPM L1 enabled without this fix. Cc: Stable Kernel <stable@kernel.org> Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-26ath9k_hw: Fix incorrect macversion and macrev checksSenthil Balasubramanian1-2/+2
There are few places where we are checking for macversion and revsions before RTC is powered ON. However we are reading the macversion and revisions only after RTC is powered ON and so both macversion and revisions are actully zero and this leads to incorrect srev checks Incorrect srev checks can cause registers to be configured wrongly and can cause unexpected behavior. Fixing this seems to address the ASPM issue that we have observed. The laptop becomes very slow and hangs mostly with ASPM L1 enabled without this fix. fix this by reading the macversion and revisisons even before we start using them. There is no reason why should we delay reading this info until RTC is powered on as this is just a register information. Cc: Stable Kernel <stable@kernel.org> Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-22ath9k_hw: replace magic values in register writes with proper definesFelix Fietkau2-12/+14
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-22ath5k: Simplify loop when setting up channelsBruno Randolf1-4/+3
Simplify confusing code and get rid of an unnecessary variable. Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-22ath9k: remove a bogus error messageFelix Fietkau1-3/+1
When beacons are being added or removed for an interface, ieee80211_beacon_get will sometimes not return a beacon. This is normal and should not result in useless logspam. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath5k: Remove redundant sc->curbandBruno Randolf2-9/+4
Remove sc->curband because the band is already stored in the current channel. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath5k: Remove unused sc->curmodeBruno Randolf2-19/+0
sc->curmode is set but never used. Remove it and the helper function. Also the ath5k_rate_update which is refered to in the comment does not exist (any more?) so we don't need to setup the band in that place. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath5: Remove unused CTL definitionsBruno Randolf1-23/+0
They are unused in ath5k and a more detailled definition is in ath/regd_common.h. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath5k: Add 802.11j 4.9GHz channels to allowed channelsBruno Randolf1-6/+13
Add the 802.11j (20MHz channel width) channels to the allowed channels. This still does not enable 802.11j in ath5k since these frequencies are out of the configured range. A later patch will deal with that. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath5k: Rename ath5k_copy_channelsBruno Randolf1-4/+4
Rename ath5k_copy_channels() to ath5k_setup_channels() - nothing is copied here. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath5k: Use mac80211 channel mapping functionBruno Randolf1-15/+8
Use mac80211 channel mapping function instead of own homegrown version. Signed-off-by: Bruno Randolf <br1@einfach.org> Acked-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Try more than one queue when scheduling new aggregate.Ben Greear1-27/+37
Try all xmit queues until the hardware buffers are full. Signed-off-by: Ben Greear <greearb@candelatech.com> Acked-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Add 'misc' file to debugfs, fix queue indexes.Ben Greear1-12/+125
Add a misc file to show hardware op-mode, irq setup, number of various types of VIFs and more. Also, previous patches were using the wrong xmit queue indexes. Change to use the internal ath9k indexes instead of the mac80211 queue indexes. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Restart xmit logic in xmit watchdog.Ben Greear4-29/+68
The system can get into a state where the xmit queue is stopped, but there are no packets pending, so the queue will not be restarted. Add logic to the xmit watchdog to attempt to restart the xmit logic if this situation is detected. Example 'dmesg' output: ath: txq: f4e723e0 axq_qnum: 2, mac80211_qnum: 2 axq_link: f4e996c8 pending frames: 1 axq_acq empty: 1 stopped: 0 axq_depth: 0 Attempting to restart tx logic. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: More xmit queue debugfs information.Ben Greear1-0/+26
To try to figure out why xmit logic hangs. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Keep track of stations for debugfs.Ben Greear4-3/+115
The stations hold the ath_node, which holds the tid and other xmit logic structures. In order to debug stuck xmit logic, we need a way to print out the tid state for the stations. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Add counters to distinquish AMPDU enqueues.Ben Greear3-4/+8
Show counters for pkts sent directly to hardware and those queued in software. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Ensure xmit makes progress.Ben Greear1-0/+2
If the txq->axq_q is empty, the code was breaking out of the tx_processq logic without checking to see if it should transmit other queued AMPDU frames (txq->axq_acq). This patches ensures ath_txq_schedule is called. This needs review. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-21ath9k: Remove un-used member from ath_node.Ben Greear1-1/+0
Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-28 20:43:15 +0300