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path: root/drivers/net/wireless/ath/ath9k
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2011-02-18Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6John W. Linville4-26/+7
Conflicts: drivers/bluetooth/ath3k.c drivers/bluetooth/btusb.c
2011-02-18ath9k_hw: Updates for AR9485 1.1 chipsets.Vivek Natarajan3-11/+1246
Signed-off-by: Vivek Natarajan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-18ath9k_htc: Fix a compilation warning.Vivek Natarajan1-1/+1
Initialize caldata to avoid compilation warning. CC [M] drivers/net/wireless/ath/ath9k/htc_drv_main.o drivers/net/wireless/ath/ath9k/htc_drv_main.c: In function ‘ath9k_htc_config’: drivers/net/wireless/ath/ath9k/htc_drv_main.c:172: warning: ‘caldata’ may be used uninitialized in this function drivers/net/wireless/ath/ath9k/htc_drv_main.c:172: note: ‘caldata’ was declared here Signed-off-by: Vivek Natarajan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-15ath9k: Fix ath9k prevents CPU to enter C3 statesMohammed Shafi Shajakhan3-22/+0
The DMA latency issue is observed only in Intel pinetrail platforms but in the driver we had a default PM-QOS value of 55. This caused unnecessary power consumption and battery drain in other platforms. Remove the pm-qos thing in the driver code and address the throughput issue in Intel pinetrail platfroms in user space using any one of the scripts in below links: http://www.kernel.org/pub/linux/kernel/people/mcgrof/scripts/cpudmalatency.c http://johannes.sipsolutions.net/files/netlatency.c.txt More details can be found in the following bugzilla link: https://bugzilla.kernel.org/show_bug.cgi?id=27532 This reverts the following commits: 98c316e348bedffa730e6f1e4baeb8a3c3e0f28b 4dc3530df7c0428b41c00399a7ee8c929406d181 10598c124ecabbbfd7522f74de19b8f7d52a1bee Signed-off-by: Mohammed Shafi Shajakhan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-14ath9k: disable beaconing before stopping beacon queueRajkumar Manoharan3-22/+52
Beaconing should be disabled before stopping beacon queue. Not doing so could queue up beacons in hw that causes failure to stop Tx DMA, due to pending frames in hw and also unnecessary beacon tasklet schedule. Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-09ath9k: Remove redundant beacon_intervalSteve Brown4-7/+9
The variable appears in both ath_softc and ath_beacon_config. The struct ath_beacon_config is embedded in ath_softc. The redundant variable was added by commit id 57c4d7b4c4986037be51476b8e3025d5ba18d8b8. Signed-off-by: Steve Brown <[email protected]> Reviewed-by: Mohammed Shafi <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-09ath9k: Add debug info for configuring power level.Ben Greear1-0/+2
Signed-off-by: Ben Greear <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-09ath9k: Print channel-type in chan-change dbg message.Ben Greear1-2/+3
Signed-off-by: Ben Greear <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-07ath9k: Update comments for not parsing DTIM periodMohammed Shafi Shajakhan1-2/+3
Add few comments for not parsing DTIM period from mac80211 Signed-off-by: Mohammed Shafi Shajakhan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-04ath9k: add additional checks for the baseband hang detectionFelix Fietkau2-9/+38
Since even with the latest changes the false positive issue of the baseband hang check is not fully solved yet, additional checks are needed. If the baseband hang occurs, the rx_clear signal will be stuck to high, so we can use the cycle counters to confirm it. With this patch, a hardware reset is only triggered if the baseband hang check returned true three times in a row, with a beacon interval between each check and if the busy time was also 99% or more during the check intervals. Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-04ath9k: Fix possible double free of PAPRD skb'sMohammed Shafi Shajakhan3-4/+7
This patch reverts the following commit ath9k: remove bfs_paprd_timestamp from struct ath_buf_state Under high interference/noisy environment conditions where PAPRD frames fails heavily introduces a possibility of double freeing skb's and causes kernel panic after some time.This patch reverts back to the original approach of using paprd_timestamp before freeing the PAPRD frame skb's [ 194.193705] Pid: 0, comm: swapper Tainted: G D WC 2.6.35-22-generic #33-Ubuntu [ 194.193712] Call Trace: [ 194.193722] [<c05c6468>] ? printk+0x2d/0x35 [ 194.193732] [<c05c63c3>] panic+0x5a/0xd2 [ 194.193741] [<c05ca3ed>] oops_end+0xcd/0xd0 [ 194.193750] [<c0105f74>] die+0x54/0x80 [ 194.193758] [<c05c9a16>] do_trap+0x96/0xc0 [ 194.193837] [<c0103fb0>] ? do_invalid_op+0x0/0xa0 [ 194.193846] [<c010403b>] do_invalid_op+0x8b/0xa0 [ 194.193856] [<c020bd4c>] ? kfree+0xec/0xf0 [ 194.193866] [<c012ce18>] ? default_spin_lock_flags+0x8/0x10 [ 194.193877] [<c01de47a>] ? free_one_page+0x12a/0x2d0 [ 194.193888] [<c01e04dc>] ? __free_pages+0x1c/0x40 [ 194.193897] [<c05c97a7>] error_code+0x73/0x78 [ 194.193906] [<c020bd4c>] ? kfree+0xec/0xf0 [ 194.193915] [<c04ecdd0>] ? skb_release_data+0x70/0xa0 [ 194.193924] [<c04ecdd0>] skb_release_data+0x70/0xa0 [ 194.193933] [<c04ec997>] __kfree_skb+0x17/0x90 [ 194.193941] [<c04eca31>] consume_skb+0x21/0x40 [ 194.193964] [<f85e0b70>] ieee80211_tx_status+0x760/0x860 [mac80211] [ 194.193979] [<f85caddf>] ath_tx_complete_buf+0x1bf/0x2c0 [ath9k] [ 194.193988] [<c05c8b9f>] ? _raw_spin_lock_irqsave+0x2f/0x50 [ 194.193997] [<c04ec40e>] ? skb_queue_tail+0x3e/0x50 [ 194.194010] [<f85cc803>] ath_tx_complete_aggr+0x823/0x940 [ath9k] [ 194.194021] [<c0108a28>] ? sched_clock+0x8/0x10 [ 194.194030] [<c016bf14>] ? sched_clock_local+0xa4/0x180 [ 194.194040] [<c0139f57>] ? enqueue_sleeper+0x1e7/0x2b0 [ 194.194051] [<c013a194>] ? enqueue_entity+0x174/0x200 [ 194.194064] [<f85ce83d>] ath_tx_edma_tasklet+0x2bd/0x3b0 [ath9k] [ 194.194074] [<c05c8b9f>] ? _raw_spin_lock_irqsave+0x2f/0x50 [ 194.194088] [<f85c7b9f>] ath9k_tasklet+0x9f/0x190 [ath9k] [ 194.194097] [<c01505d7>] tasklet_action+0xa7/0xb0 [ 194.194107] [<c015127c>] __do_softirq+0x9c/0x1b0 [ 194.194117] [<c01a7f64>] ? irq_to_desc+0x14/0x20 [ 194.194126] [<c0124fc4>] ? ack_apic_level+0x64/0x1f0 [ 194.194136] [<c01513d5>] do_softirq+0x45/0x50 [ 194.194145] [<c0151545>] irq_exit+0x65/0x70 [ 194.194153] [<c05cf665>] do_IRQ+0x55/0xc0 [ 194.194162] [<c016a6c7>] ? hrtimer_start+0x27/0x30 [ 194.194171] [<c0103630>] common_interrupt+0x30/0x38 [ 194.194181] [<c012c21a>] ? native_safe_halt+0xa/0x10 [ 194.194268] [<c010a2f9>] default_idle+0x49/0xb0 [ 194.194277] [<c0101fcc>] cpu_idle+0x8c/0xd0 [ 194.194286] [<c05b2431>] rest_init+0x71/0x80 [ 194.194295] [<c081981a>] start_kernel+0x36e/0x374 [ 194.194305] [<c08199dd>] ? pass_all_bootoptions+0x0/0xa [ 194.194314] [<c08190d7>] i386_start_kernel+0xd7/0xdf [ 194.194364] panic occurred, switching back to text console Signed-off-by: Mohammed Shafi Shajakhan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k: reserve a beacon slot on beaconing vif additionRajkumar Manoharan1-3/+1
The beaconing vif addition is based on max beacon slot available. So it is better to reserve a beacon slot on interface addition and let it be configured properly on bss_info change. Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k: Show channel type and frequency in debugfs.Ben Greear1-2/+21
Signed-off-by: Ben Greear <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k: do not access hw registers in FULL SLEEPRajkumar Manoharan1-0/+2
The opmode recalculation is accessing hw registers. When it is called from remove interface callback and if there are no vifs present then hw is moved to FULL SLEEP by radio disable. So use power save wrappers before accessing hw registers in calculating opmode state. Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k_htc: make use common of function to update txpowerRajkumar Manoharan3-17/+10
Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k: move update tx power to commonRajkumar Manoharan3-16/+23
move ath_update_txpow to common to remove code duplication in both ath9k & ath9k_htc. Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k: use common get current channel functionRajkumar Manoharan1-16/+3
Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-03ath9k_htc: cancel ani work in ath9k_htc_stopRajkumar Manoharan1-0/+1
ani work is cancelled in dissaoctiation. But in some cases during suspend, deauthention never be called. So we failed to stop ani work which was identified by the following warning. Call Trace: [<ffffffffa0454a1d>] ieee80211_can_queue_work.clone.17+0x2d/0x40 [mac80211] [<ffffffffa0454a60>] ieee80211_queue_delayed_work+0x30/0x60 [mac80211] [<ffffffffa0567f82>] ath9k_ani_work+0x142/0x250 [ath9k_htc] [<ffffffff81073c70>] async_run_entry_fn+0x0/0x180 [<ffffffffa0567e40>] ath9k_ani_work+0x0/0x250 [ath9k_htc] Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-02-01Merge branch 'master' of ↵John W. Linville1-1/+7
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 Conflicts: drivers/net/wireless/wl12xx/spi.c
2011-02-01ath9k: Fix memory leak due to failed PAPRD framesMohammed Shafi Shajakhan1-1/+7
free the skb's when the Tx of PAPRD frames fails and also add a debug message indicating that. Signed-off-by: Mohammed Shafi Shajakhan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28Merge branch 'master' of ↵John W. Linville13-36/+52
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 Conflicts: drivers/net/wireless/ath/ath9k/init.c
2011-01-28ath9k: fix compile error in non-debug ath_debug_stat_tx() stubFelix Fietkau1-1/+2
"ath9k: fix tx queue index confusion in debugfs code" changed the debug function but not the stub. Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k: use common API to avoid code duplicationRajkumar Manoharan2-71/+3
Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k_hw: Update PMU setting to improve ripple issue for AR9485.Vivek Natarajan1-1/+1
Change from the systems team to update PMU setting for AR9485 version of chipsets. Signed-off-by: Vivek Natarajan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k: Fix a locking related issue.Vivek Natarajan1-1/+4
Spin_lock has been tried to be acquired twice from ath9k_tasklet to ath_reset which resulted in a machine freeze. Signed-off-by: Vivek Natarajan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k_hw: DDR_PLL and BB_PLL need correct setting.Vivek Natarajan2-1/+36
Updates from the analog team for AR9485 chipsets to set DDR_PLL2 and DDR_PLL3. Also program the BB_PLL ki and kd value. Signed-off-by: Vivek Natarajan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Cc: Ben Greear <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k: fold struct ath_wiphy into struct ath_softcFelix Fietkau10-105/+52
Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k: remove the bf->aphy fieldFelix Fietkau2-24/+17
Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-28ath9k: remove support for virtual wiphysFelix Fietkau10-951/+23
Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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: [email protected] Cc: Paul Stewart <[email protected]> Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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: [email protected] Cc: Jack Lee <[email protected]> Signed-off-by: Rajkumar Manoharan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-27ath9k_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: [email protected] Tested-by: Sujith <[email protected]> Signed-off-by: Stanislaw Gruszka <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-27ath9k: 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: [email protected] Signed-off-by: Stanislaw Gruszka <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-27ath9k: 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 <[email protected]> Cc: Ben Greear <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-26ath9k: clean up enums and unused macrosMohammed Shafi Shajakhan2-6/+3
Remove unused macros and cleanup buffer_type enumeration Signed-off-by: Mohammed Shafi Shajakhan <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-25ath9k_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 <[email protected]> Signed-off-by: Senthil Balasubramanian <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-25ath9k_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 <[email protected]> Signed-off-by: Senthil Balasubramanian <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-21ath9k_hw: replace magic values in register writes with proper definesFelix Fietkau2-12/+14
Signed-off-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
2011-01-21ath9k: 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 <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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 <[email protected]> Acked-by: Felix Fietkau <[email protected]> Signed-off-by: John W. Linville <[email protected]>
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