Commit Graph

57 Commits

Author SHA1 Message Date
Adrian Chadd
bcf5fc498a [ath] commit initial bluetooth coexistence support for the MCI NICs.
This is the initial framework to call into the MCI HAL routines and drive
the basic state engine.

The MCI bluetooth coex model uses a command channel between wlan and
bluetooth, rather than a 2-wire or 3-wire signaling protocol to control things.
This means the wlan and bluetooth chip exchange a lot more information and
signaling, even at the per-packet level.  The NICs in question can share
the input LNA and output PA on the die, so they absolutely can't stomp
on each other in a silly fashion.  It also allows for the bluetooth side
to signal when profiles come and go, so the driver can take appropriate
control.  There's also the possibility of dynamic bluetooth/wlan duty cycle
control which I haven't yet really played with.

It configures things up with a static "wlan wins everything" coexistence,
configures up the available 2GHz channel map for bluetooth, sets a static
duty cycle for bluetooth/wifi traffic priority and drives the basics needed to
keep the MCI HAL code happy.

It doesn't do any actual coexistence except to default to "wlan wins everything",
which at least demonstrates that things do indeed work.  Bluetooth inquiry frames
still trump wifi (including beacons), so that demonstrates things really do
indeed seem to work.

Tested:

* AR9462 (WB222), STA mode + bt
* QCA9565 (WB335), STA mode + bt

TODO:

* .. the rest of coexistence.  yes, bluetooth, not people.  That stuff's hard.
* It doesn't do the initial BT side calibration, which requires a WLAN chip
  reset.  I'll fix up the reset path a bit more first before I enable that.
* The 1-ant and 2-ant configuration bits aren't being set correctly in
  if_ath_btcoex.c - I'll dig into that and fix it in a subsequent commit.
* It's not enabled by default for WB222/WB225 even though I believe it now
  can be - I'll chase that up in a subsequent commit.

Obtained from:	Qualcomm Atheros, Linux ath9k
2016-06-02 00:51:36 +00:00
Adrian Chadd
204c8e00de Add initial ar9300 HAL support for the spectral scan mode. 2015-12-02 05:36:45 +00:00
Adrian Chadd
b45de1ebcd [ath] migrate ioctl and busdma memory operations out into separate source files.
This should be a big no-op pass; and reduces the size of if_ath.c.

I'm hopefully soon going to take a whack at the USB support for ath(4)
and this'll require some reuse of the busdma memory code.
2015-11-24 03:42:58 +00:00
Warner Losh
4906cdc8c5 Re-support CWARNFLAGS, lost when bsd.sys.mk was removed. Also, support
CWARNFALGS.$file centrally so we don't have to have it in all the
places. Remove a few warning flags that are no longer needed.
Also, always use -Wno-unknown-pragma to (hopefully temporarily) work
around #pragma ident in debug.h in the opensolaris code. Remove some
stale warning suppression that's no longer necessary.
2015-01-03 03:35:18 +00:00
Dimitry Andric
fabb883e26 Disable warning about unused functions for ar9300_reset.c for now.
MFC after:	3 days
2013-12-28 23:12:32 +00:00
Adrian Chadd
216ca2346f Migrate the LNA mixing diversity machinery from the AR9285 HAL to the driver.
The AR9485 chip and AR933x SoC both implement LNA diversity.
There are a few extra things that need to happen before this can be
flipped on for those chips (mostly to do with setting up the different
bias values and LNA1/LNA2 RSSI differences) but the first stage is
putting this code into the driver layer so it can be reused.

This has the added benefit of making it easier to expose configuration
options and diagnostic information via the ioctl API.  That's not yet
being done but it sure would be nice to do so.

Tested:

* AR9285, with LNA diversity enabled
* AR9285, with LNA diversity disabled in EEPROM
2013-06-12 14:52:57 +00:00
Adrian Chadd
b70f530bc7 Bring over the initial static bluetooth coexistence configuration
for the WB195 combo NIC - an AR9285 w/ an AR3011 USB bluetooth NIC.

The AR3011 is wired up using a 3-wire coexistence scheme to the AR9285.

The code in if_ath_btcoex.c sets up the initial hardware mapping
and coexistence configuration.  There's nothing special about it -
it's static; it doesn't try to configure bluetooth / MAC traffic priorities
or try to figure out what's actually going on.  It's enough to stop basic
bluetooth traffic from causing traffic stalls and diassociation from
the wireless network.

To use this code, you must have the above NIC.  No, it won't work
for the AR9287+AR3012, nor the AR9485, AR9462 or AR955x combo cards.

Then you set a kernel hint before boot or before kldload, where 'X'
is the unit number of your AR9285 NIC:

# kenv hint.ath.X.btcoex_profile=wb195

This will then appear in your boot messages:

[100482] athX: Enabling WB195 BTCOEX

This code is going to evolve pretty quickly (well, depending upon my
spare time) so don't assume the btcoex API is going to stay stable.

In order to use the bluetooth side, you must also load in firmware using
ath3kfw and the binary firmware file (ath3k-1.fw in my case.)

Tested:

* AR9280, no interference
* WB195 - AR9285 + AR3011 combo; STA mode; basic bluetooth inquiries
  were enough to cause traffic stalls and disassociations.  This has
  stopped with the btcoex profile code.

TODO:

* Importantly - the AR9285 needs ASPM disabled if bluetooth coexistence
  is enabled.  No, I don't know why.  It's likely some kind of bug to do
  with the AR3011 sending bluetooth coexistence signals whilst the device
  is asleep.  Since we don't actually sleep the MAC just yet, it shouldn't
  be a problem.  That said, to be totally correct:

  + ASPM should be disabled - upon attach and wakeup
  + The PCIe powersave HAL code should never be called

  Look at what the ath9k driver does for inspiration.

* Add WB197 (AR9287+AR3012) support
* Add support for the AR9485, which is another combo like the AR9285
* The later NICs have a different signaling mechanism between the MAC
  and the bluetooth device; I haven't even begun to experiment with
  making that HAL code work.  But it should be a lot more automatic.

* The hardware can do much more interesting traffic weighting with
  bluetooth and wifi traffic.  None of this is currently used.
  Ideally someone would code up something to watch the bluetooth traffic
  GPIO (via an interrupt) and then watch it go high/low; then figure out
  what the bluetooth traffic is and adjust things appropriately.

* If I get the time I may add in some code to at least track this stuff
  and expose statistics.  But it's up to someone else to experiment with
  the bluetooth coexistence support and add the interesting stuff (like
  "real" detection of bulk, audio, etc bluetooth traffic patterns and
  change wifi parameters appropriately - eg, maximum aggregate length,
  transmit power, using quiet time to control TX duty cycle, etc.)
2013-06-07 09:02:02 +00:00
Adrian Chadd
0e468be195 Add the AR9300 HAL into the kernel and module builds.
Tested:

* make universe (honest!)
2013-05-02 07:05:34 +00:00
Adrian Chadd
cac48304a8 Disable warning/errors for two files for now - they don't compile clean
with clang.

I'll work on this soon.
2013-03-14 00:27:53 +00:00
Adrian Chadd
0200f963e7 Shift this over to a new location in contrib/, in preparation to push
this public.
2013-03-12 02:54:49 +00:00
Adrian Chadd
8ed727243a Placeholder for the upcoming AR9300 HAL code. 2013-03-09 01:05:36 +00:00
Adrian Chadd
aaa4568321 Link if_ath_spectral.c into the build. 2013-01-02 04:00:54 +00:00
Adrian Chadd
e9d8a3ab4b Add missing update to link ar5416_spectral.c into the build. 2013-01-02 01:24:36 +00:00
Adrian Chadd
8db3411759 Add the btcoex code into the module compilation. 2012-12-03 23:38:08 +00:00
Adrian Chadd
f506aeda9b Include if_ath_alq.c, which only gets actually compiled if ATH_DEBUG_ALQ
is enabled.
2012-12-03 23:36:03 +00:00
Dimitry Andric
5e34d6ba62 Remove workaround for the clang 3.2 warning in ah_eeprom_9287.c, since
the fix has been applied now.
2012-08-29 18:14:20 +00:00
Dimitry Andric
7ae0e2c9f0 Upgrade our copy of llvm/clang to trunk r162107. With thanks to
Benjamin Kramer and Joerg Sonnenberger for their input and fixes.
2012-08-20 18:33:03 +00:00
Adrian Chadd
3fdfc33024 Begin separating out the TX DMA setup in preparation for TX EDMA support.
* Introduce TX DMA setup/teardown methods, mirroring what's done in
  the RX path.

  Although the TX DMA descriptor is setup via ath_desc_alloc() /
  ath_desc_free(), there TX status descriptor ring will be allocated
  in this path.

* Remove some of the TX EDMA capability probing from the RX path and
  push it into the new TX EDMA path.
2012-07-23 03:52:18 +00:00
Adrian Chadd
b9ea0ceed7 Link in the new RX EDMA routines. 2012-07-03 07:01:12 +00:00
Adrian Chadd
ba5c15d9ba Migrate most of the beacon handling functions out to if_ath_beacon.c.
This is also in preparation for supporting AR9300 and later NICs.
2012-05-20 04:14:29 +00:00
Adrian Chadd
a35dae8d87 Migrate the TDMA management functions out of if_ath.c into if_ath_tdma.c.
There's some TX path TDMA code in if_ath_tx.c which should be migrated
out, but first I should likely try and verify/fix/repair the TDMA support
in 9.x and -HEAD.
2012-05-20 02:49:42 +00:00
Adrian Chadd
801ff3b853 .. and update this. 2012-05-20 02:05:25 +00:00
Adrian Chadd
7b1144d245 Break out the radar code into a separate source file.
This mirrors the internal HAL organisation and reduces the differences
between the HAL codebases slightly.

Obtained from:	Atheros
2012-02-20 03:07:07 +00:00
Adrian Chadd
188da34c00 Re-enable this bit of logic from before, which only sets a default
opt_ah.h file if KERNBUILDDIR isn't defined.

For now, AH_SUPPORT_AR5416 is required, so I'll just fix any
configuration file in /usr/src which is missing this option.

Pointy hat when things do break to:	adrian
2012-01-05 06:22:09 +00:00
Adrian Chadd
c65ee21d46 First pass of LED related code changes.
Migrate the LED code out of if_ath.c and into if_ath_led.c.
These routines are _all_ software based LED blinking.
2011-12-26 05:37:09 +00:00
Dimitry Andric
f15dabe59d Disable various warnings for the ath module in a more fine-grained way:
only add the option for the specific .c files that need them, like via
sys/conf/files.

MFC after:	1 week
2011-12-22 23:40:52 +00:00
Dimitry Andric
510ac7e382 Amend r228783 by also disabling -Wshift-count-negative
-Wshift-count-overflow warnings for the ath module.

MFC after:	1 week
2011-12-21 22:13:50 +00:00
Adrian Chadd
bbfa418de5 Revert this previous commit for now - although this override unfortunately
results in the HAL being built without HAL debugging/diagnostic support,
the module building process needs to be somehow taught to not build AR5416+
NICs if AH_SUPPORT_AR5416 isn't defined in opt_ah.h .
2011-11-10 23:16:59 +00:00
Adrian Chadd
965aab1233 Add a missing reference to AR9287.
Sponsored by:	Hobnob, Inc.
2011-11-10 17:01:34 +00:00
Adrian Chadd
5a25d7aab1 Use the system-provided opt_ah.h if one is provided.
This implies that users who are building the driver do so with
KERNBUILDDIR set to the compile/CONFIG directory so the various
opt_* sources can be pulled in.
2011-11-09 23:37:13 +00:00
Adrian Chadd
48237774e4 Flesh out the radar detection related operations for the ath driver.
This is in no way a complete DFS/radar detection implementation!
It merely creates an abstracted interface which allows for future
development of the DFS radar detection code.

Note: Net80211 already handles the bulk of the DFS machinery,
all we need to do here is figure out that a radar event has occured
and inform it as such. It then drives the DFS state engine for us.

The "null" DFS radar detection module is included by default;
it doesn't require a device line.

This commit:

* Adds a simple abstracted layer for radar detection state -
  sys/dev/ath/ath_dfs/;
* Implements a null DFS module which doesn't do anything;
  (ie, implements the exact behaviour at the moment);
* Adds hooks to the ath driver to process received radar events
  and gives the DFS module a chance to determine whether
  a radar has been detected.

Obtained from:	Atheros
2011-06-01 20:09:49 +00:00
Adrian Chadd
94c389c61b Introduce AR9287 support to the FreeBSD HAL. 2011-05-26 20:31:08 +00:00
Adrian Chadd
9f25ad52ce Introduce AR9130 (HOWL) WMAC support to the FreeBSD HAL.
The AR9130 is an AR9160/AR5416 family WMAC which is glued directly
to the AR913x SoC peripheral bus (APB) rather than via a PCI/PCIe
bridge.

The specifics:

* A new build option is required to use the AR9130 - AH_SUPPORT_AR9130.
  This is needed due to the different location the RTC registers live
  with this chip; hopefully this will be undone in the future.
  This does currently mean that enabling this option will break non-AR9130
  builds, so don't enable it unless you're specifically building an image
  for the AR913x SoC.

* Add the new probe, attach, EEPROM and PLL methods specific to Howl.

* Add a work-around to ah_eeprom_v14.c which disables some of the checks
  for endian-ness and magic in the EEPROM image if an eepromdata block
  is provided. This'll be fixed at a later stage by porting the ath9k
  probe code and making sure it doesn't break in other setups (which
  my previous attempt at this did.)

* Sprinkle Howl modifications throughput the interrupt path - it doesn't
  implement the SYNC interrupt registers, so ignore those.

* Sprinkle Howl chip powerup/down throughout the reset path; the RTC methods
  were

* Sprinkle some other Howl workarounds in the reset path.

* Hard-code an alternative setup for the AR_CFG register for Howl, that
  sets up things suitable for Big-Endian MIPS (which is the only platform
  this chip is glued to.)

This has been tested on the AR913x based TP-Link WR-1043nd mode, in
legacy, HT/20 and HT/40 modes.

Caveats:

* 2ghz has only been tested. I've not seen any 5ghz radios glued to this
  chipset so I can't test it.

* AR5416_INTERRUPT_MITIGATION is not supported on the AR9130. At least,
  it isn't implemented in ath9k. Please don't enable this.

* This hasn't been tested in MBSS mode or in RX/TX block-aggregation mode.
2011-04-28 12:47:40 +00:00
Adrian Chadd
77823fbc2c Bring over the antenna diversity logic support for Kite.
Again, this is just the code ported from ath9k and included in the build,
it isn't yet enabled.
2011-04-13 11:32:15 +00:00
Adrian Chadd
1c554472de Add the initial AR9285 PHY glue for supporting antenna diversity.
This code isn't currently used anywhere; it's just linked into the build.
2011-04-13 02:40:45 +00:00
Adrian Chadd
dba9c85977 Break out the ath PCI logic into a separate device/module.
Introduce the AHB glue for Atheros embedded systems. Right now it's
hard-coded for the AR9130 chip whose support isn't yet in this HAL;
it'll be added in a subsequent commit.

Kernel configuration files now need both 'ath' and 'ath_pci' devices; both
modules need to be loaded for the ath device to work.
2011-03-31 08:07:13 +00:00
Adrian Chadd
586b0ae5aa Port over the AR9285 PA calibration and initial calibration code from
Linux ath9k.

The ath9k ar9002_hw_init_cal() isn't entirely clear about what
is supposed to be called for what chipsets, so I'm ignoring the
rest of it and just porting the AR9285 init cal path as-is and
leaving the rest alone. Subsequent commits may also tidy up the
Merlin (AR9285) and other chipset support.

Obtained from:	Linux ath9k
2011-03-11 11:58:54 +00:00
Adrian Chadd
48c1d36479 Implement open-loop TX power control (OLC) for Merlin (AR9280) and
generally tidy up the TX power programming code.

Enforce that the TX power offset for Merlin is -5 dBm, rather than
any other value programmable in the EEPROM. This requires some
further code to be ported over from ath9k, so until that is done
and tested, fail to attach NICs whose TX power offset isn't -5
dBm.

This improves both legacy and HT transmission on my merlin board.
It allows for stable MCS TX up to MCS15.

Specifics:

* Refactor out a bunch of the TX power calibration code -
  setting/obtaining the power detector / gain boundaries,
  programming the PDADC
* Take the -5 dBm TX power offset into account on Merlin -
  "0" in the per-rate TX power register means -5 dBm, not
  0 dBm
* When doing OLC
* Enforce min (0) and max (AR5416_MAX_RATE_POWER) when fiddling
  with the TX power, to avoid the TX power values from wrapping
  when low.
* Implement the 1 dBm cck power offset when doing OLC
* Implement temperature compensation for 2.4ghz mode when doing OLC
* Implement an AR9280 specific TX power calibration routine which
  includes the OLC twiddles, leaving the earlier chipset path
  (AR5416, AR9160) alone

Whilst here, use these refactored routines for the AR9285 TX power
calibration/programming code and enforce correct overflow/underflow
handling when fiddling with TX power values.

Obtained from:	linux ath9k
2011-03-08 06:59:59 +00:00
Adrian Chadd
d2d7a00aa9 Break the keycache management functions out into if_ath_keycache.c . 2011-03-02 17:19:54 +00:00
Adrian Chadd
6079fdbede Migrate the sysctl related routines (statistics, debugging, etc) out of
if_ath.c and into if_ath_sysctl.c .
2011-03-02 16:03:19 +00:00
Adrian Chadd
4b44f6f275 Include some preliminary TX HT rate scenario setup code.
The AR5416 and later TX descriptors have new fields for supporting
11n bits (eg 20/40mhz mode, short/long GI) and enabling/disabling
RTS/CTS protection per rate.

These functions will be responsible for initialising the TX descriptors
for the AR5416 and later chips for both HT and legacy frames.

Beacon frames will remain using the non-11n TX descriptor setup for now;
Linux ath9k does much the same.

Note that these functions aren't yet used anywhere; a few more framework
changes are needed before all of the right rate information is available
for TX.
2011-02-01 08:03:01 +00:00
Adrian Chadd
b8e788a53a Migrate the TX path code out of if_ath and into a separate source file.
There's two reasons for this:

* the raw and non-raw TX path shares a lot of duplicate code which should be
  refactored;
* the 11n-ready chip TX path needs a little reworking.
2011-01-29 11:35:23 +00:00
Adrian Chadd
5bc8125ad3 Break out the debug macros from if_ath.c into if_ath_debug.[ch] .
This is prep work for breaking out the TX path into a separate
set of source files.
2011-01-29 05:08:21 +00:00
Adrian Chadd
204582f2f3 Push the non-AR5416 related stuff into chipset specific directories.
sys/dev/ath/ath_hal/ar5416/ is getting very crowded and further
commits will make it even more crowded. Now is a good time to
shuffle these files out before any more extensive work is done
on them.

Create an ar9003 directory whilst I'm here; ar9003 specific
chipset code will eventually live there.
2011-01-20 09:03:40 +00:00
Rui Paulo
b56f2da805 Add a missing ar9285_reset.c file. 2010-03-03 20:01:31 +00:00
Rui Paulo
33b9a0f002 Add AR9285 sources. 2010-03-02 12:51:39 +00:00
Rui Paulo
7c1611e056 Improve previous commit and add missing ar9280.c 2010-01-31 14:25:09 +00:00
Rui Paulo
7d3cd831b2 Build 928x files too. 2010-01-31 13:39:08 +00:00
Sam Leffler
584f7327f1 Remove ATH_SUPPORT_TDMA and use IEEE80211_SUPPORT_TDMA instead. It
doesn't make much sense to configure driver support w/o net80211.
Note this means ath now depends on opt_wlan.h.
2009-03-30 19:23:49 +00:00
Sam Leffler
2a8d8e7cfd Combine ath rate control modules with ath after bringing ath_hal
src into the tree.  The old split was balanced on module dependencies
and symbol exposure that no longer exists.  Users that want a module
setup with rate control algorithm other than sample must override
ATH_RATE in the ath module Makefile.

Reviewed by:	imp
2008-12-14 22:26:57 +00:00