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path: root/drivers/net/wireless/ath/ath9k/mci.c
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2012-07-17ath9k: Fix race in reset-work usageRajkumar Manoharan
Using work_pending() to defer certain operations when a HW-reset work has been queued is racy since the check would return false when the work item is actually in execution. Use SC_OP_HW_RESET instead to fix this race. Also, unify the reset debug statistics maintenance. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-09ath9k: Stop the BTCOEX timers before disabling BTCOEXMohammed Shafi Shajakhan
Its safe to stop the BTCOEX timers 'period_timer' and 'no_stomp_timer' before disabling BTCOEX. These timers can call ath9k_hw_btcoex_enable (or) change the BT stomp type if they seem to be running after we had called ath9k_hw_btcoex_disable, which is obviously not correct. Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Cc: Bala Shanmugam <bkamatch@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-28ath9k: Fix signedness in a MCI debug messageMohammed Shafi Shajakhan
seems i got a message like this ath: phy0: BT_Status_Update: is_link=0, linkId=2, state=1, SEQ=-2085766476 initially. Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-20ath9k: fix incorrect profile type manupulationBala Shanmugam
Two MCI interrupts are generated while adding A2DP and headset profiles with different types and same connection handle. While disconnecting, only one MCI interrupt is generated with last added profile type value for both profiles. While adding second profile type decrement first one. Signed-off-by: Bala Shanmugam <bkamatch@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: remove MCI_STATE_SET_BT_SLEEPRajkumar Manoharan
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: remove MCI_STATE_CONT_* stateRajkumar Manoharan
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: remove MCI_STATE_BTRajkumar Manoharan
remove MCI_STATE_BT and use bt_state instead. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: remove p_data argument from ar9003_mci_stateRajkumar Manoharan
As p_data is unuse, lets remove it from ar9003_mci_state. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: remove MCI_STATE_SEND_WLAN_CHANNELSRajkumar Manoharan
Add a MCI util function to send wlan channel info to BT. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: add utility function to set BT versionRajkumar Manoharan
Add a utility function to set bluetooth version and remove MCI_STATE_SET_BT_COEX_VERSION. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k_hw: cleanup MCI gpm offset stateRajkumar Manoharan
Add utility functions to get and test GPM offset and remove MCI_STATE*_GPM_OFFSET states. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k: fix btcoex duty cycleRajkumar Manoharan
* Reset duty cycle before updating btcoex scheme. Otherwise duty cycle reaches max limit and never be reduced again * Adjust duty cycle with proper BDR profile value Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k: defer btcoex scheme updateRajkumar Manoharan
As btcoex scheme updation might sleep, remove the function call from tasklet context and queue it up as a separate work. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k: keep btcoex period in millisecondsRajkumar Manoharan
btcoex periord is converted into micro seconds during initialization and converted back to milli seconds while starting timer. As MCI code handles btcoex period in msec, lets keep the btcoex timer in msec and convert them into other form whenever needed. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-13ath9k: simplify btcoex profile managementRajkumar Manoharan
This patch simplifies profile management utility functions. * Separate find_profile from add/del functions * Return correct values when the profile list is empty or profile is ot found * flush the profiles when there are entries in the list Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-06ath9k: BT coex performance tuning for AR9462Rajkumar Manoharan
Use smaller aggregation limit and increasing aggregation threshold for osla that could improve wlan performance when there is HID profile. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-06ath9k: Setup MCI interrupts properlySujith Manoharan
MCI interrupts have to be enabled only when BTCOEX is actually in use. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-27ath9k: Cleanup mci.cSujith Manoharan
Cleanup whitespace, fix indentation and coding style. Also remove debug messages that were flooding the log. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-27ath9k: Remove ATH9K_HW_CAP_MCI checksSujith Manoharan
With the ability to remove BTCOEX support at compile time, these checks are no longer needed. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-02-27ath9k: Cleanup MCI init/deinit routinesSujith Manoharan
This patch simplifies the buffer allocation functions for MCI and removes unneeded memset calls. Also, a couple of unused variables are removed and a memory leak in DMA allocation is fixed. [ 1263.788267] WARNING: at /home/sujith/dev/wireless-testing/lib/dma-debug.c:875 check_unmap+0x173/0x7e0() [ 1263.788273] ath9k 0000:06:00.0: DMA-API: device driver frees DMA memory with different size [device address=0x0000000071908000] [map size=512 bytes] [unmap size=256 bytes] [ 1263.788345] Pid: 774, comm: rmmod Tainted: G W O 3.3.0-rc3-wl #18 [ 1263.788348] Call Trace: [ 1263.788355] [<ffffffff8105110f>] warn_slowpath_common+0x7f/0xc0 [ 1263.788359] [<ffffffff81051206>] warn_slowpath_fmt+0x46/0x50 [ 1263.788363] [<ffffffff8125a713>] check_unmap+0x173/0x7e0 [ 1263.788368] [<ffffffff8123fc22>] ? prio_tree_left+0x32/0xc0 [ 1263.788373] [<ffffffff8125aded>] debug_dma_free_coherent+0x6d/0x80 [ 1263.788381] [<ffffffffa0701c3c>] ath_mci_cleanup+0x7c/0x110 [ath9k] [ 1263.788387] [<ffffffffa06f4033>] ath9k_deinit_softc+0x113/0x120 [ath9k] [ 1263.788392] [<ffffffffa06f55cc>] ath9k_deinit_device+0x5c/0x70 [ath9k] [ 1263.788397] [<ffffffffa0704934>] ath_pci_remove+0x54/0xa0 [ath9k] [ 1263.788401] [<ffffffff81267d06>] pci_device_remove+0x46/0x110 [ 1263.788406] [<ffffffff813102bc>] __device_release_driver+0x7c/0xe0 [ 1263.788410] [<ffffffff81310a00>] driver_detach+0xd0/0xe0 [ 1263.788414] [<ffffffff81310118>] bus_remove_driver+0x88/0xe0 [ 1263.788418] [<ffffffff813111c2>] driver_unregister+0x62/0xa0 [ 1263.788421] [<ffffffff812680c4>] pci_unregister_driver+0x44/0xc0 [ 1263.788427] [<ffffffffa0705015>] ath_pci_exit+0x15/0x20 [ath9k] [ 1263.788432] [<ffffffffa070a92d>] ath9k_exit+0x15/0x31 [ath9k] [ 1263.788436] [<ffffffff810b971c>] sys_delete_module+0x18c/0x270 [ 1263.788441] [<ffffffff81436edd>] ? retint_swapgs+0x13/0x1b [ 1263.788446] [<ffffffff812483be>] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 1263.788450] [<ffffffff814378e9>] system_call_fastpath+0x16/0x1b [ 1263.788453] ---[ end trace 3ab4d030ffde40d4 ]--- Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-01-04ath9k: make ath_mci_duty_cycle staticLuis R. Rodriguez
This fixes this sparse warning: CHECK drivers/net/wireless/ath/ath9k/mci.c drivers/net/wireless/ath/ath9k/mci.c:23:4: warning: symbol 'ath_mci_duty_cycle' was not declared. Should it be static? Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-19ath9k_hw: make bluetooth coexistence support optional at compile timeFelix Fietkau
Many systems (e.g. embedded systems) do not have wifi modules connected to bluetooth modules, so bluetooth coexistence is irrelevant there. With the addition of MCI support, ath9k picked up quite a bit of extra code that can be compiled out this way. This patch redefines ATH9K_HW_CAP_MCI and adds an inline wrapper for querying the bluetooth coexistence scheme, allowing the compiler to eliminate code that uses it, with only very little use of #ifdef. On MIPS this reduces the total size for the modules by about 20k. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-19ath: Convert ath_dbg(bar, ATH_DBG_<FOO>, to ath_dbg(bar, FOOJoe Perches
Add ATH_DBG_ to macros to shorten the uses and reduce the line count. Coalesce ath_dbg formats. Add missing spaces to coalesced formats. Add missing newline terminations to ath_dbg formats. Align ath_dbg arguments where appropriate. Standardize ath_dbg formats without periods. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-12-13ath9k: make two mci related functions staticFelix Fietkau
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-30ath9k: MCI state machine based on MCI interruptMohammed Shafi Shajakhan
Cc: Wilson Tsao <wtsao@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-30ath9k: Add functions to allocate/free buffers for MCIMohammed Shafi Shajakhan
required buffers and dma allocation is done for GPM and SCHED messages Cc: Wilson Tsao <wtsao@qca.qualcomm.com> Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-11-08ath9k: Add btcoex profile management support for AR9462Rajkumar Manoharan
AR9462 chips have the capabilities to provoide bluetooth profile information. For non-AR9462 btcoex chips, the BT priority traffic was identified by periodically polling the respective registers and updated dutycycle, stomptype, etc. As AR9462 chip offers the BT profile informations, let us make use of that to update aggregation limit, dutycycle, stomptype and wieghtages. Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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