Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r228817:

Use the correct types when calling the decompression mask function.

There's currently no public code which uses this feature and the
current reference driver doesn't enable this feature at all.
It's possible it was used by a previous version of the driver and
that indeed it should return HAL_STATUS; but at this point I'm
happy to require that they complain and submit a patch.

This was found by LLVM compile-time type checking.

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Add another HAL method - ah_isFastClockEnabled - which returns AH_TRUE
if 5ghz fast clock is enabled in the current operating mode.

It's slightly dirty, but it's part of the reference HAL and used by
the (currently closed-source) radar event code to map radar pulses
back to microsecond durations.

Obtained from: Atheros
Approved by: re (kib, blanket)

Since HAL_PHYERR_* is used in the radar code, always include ah_desc.h.

Flesh out a new HAL method to fetch the radar PHY error frame information.

For the AR5211/AR5212, this is apparently a one byte pulse duration
counter value. It is only coded up here for the AR5212 as I don't have
any AR5211-series hardware to test it on.

This information was extracted from the Madwifi DFS branch along with
some local additions.

Please note - all this does is extract out the radar event duration,
it in no way reflects the presence of a radar. Further code is needed
to take a set of radar events and filter them to extract out correct
radar pulse trains (and ignore other events.)

For further information, please see:

http://wiki.freebsd.org/dev/ath_hal%284%29/RadarDetection

This includes references to the relevant patents which describe what
is going on.

Obtained from: Madwifi

Bring over the relevant registers to use when implementing the quiet time
portion of 802.11h.

The AR5212 code has been brought over as a reference, it's currently
untested.

Obtained from: Atheros

Add some missing DFS chipset functionality to the FreeBSD HAL.

Please note - this doesn't in any way constitute a full DFS
implementation, it merely adds the relevant capability bits and
radar detection threshold register access.

The particulars:

* Add new capability bits outlining what the DFS capabilities
are of the various chipsets.
* Add HAL methods to set and get the radar related register values.
* Add AR5212 and AR5416+ DFS radar related register value
routines.
* Add a missing HAL phy error code that's related to radar event
processing.
* Add HAL_PHYERR_PARAM, a data type that encapsulates the radar
register values.

The AR5212 routines are just for completeness. The AR5416 routines
are a super-set of those; I may later on do a drive-by pass to
tidy up duplicate code.

Obtained from: Linux, Atheros

The current ANI capability information uses a different set of
values for the commands, compared to the internal command values
(HAL_ANI_CMD.)

My eventual aim is to make the HAL_ANI_CMD internal enum match
the public API and then remove all this messiness.

This now allows HAL_CAP_INTMIT users to use a public HAL_CAP_INTMIT_
enum rather than magic constants.

The only magic constants currently used by if_ath are "enable" and
"present". Some local tools of mine allow for direct, manual fiddling
of the ANI variables and I'll convert these to use the public enum API
before I commit them.

The ANI control for the AR5416 and later chips was calling ar5212AniControl(),
which did AR5212 specific initialisation. This would cause some slight
silliness when enabling/disabling ANI.

Just to be completely correct - and to ensure the phy error mask/RX filter
register isn't incorrectly played with - make the ANI control function a
method, have it set appropriately for AR5212/AR5416, and call that from the
ANI control interface.

Fix case, introduced in my previous commit.

Pointy hat goes to: adrian, for having multiple build screens
open and checking the wrong one.

Use the halMcastKeySrchSupport capability bit to selectively enable/disable
the multicast key search support for AR5212, AR5416 and later.

The general HAL routine ath_hal_getcapability() implement checking this
but it's overridden by a check in ar5212_misc:ar5212GetCapability().
This restores the later functionality in case it's found to be broken
in any of the 11n chipsets.

Make sure that the AR_MISC_MODE value from the initvals are properly respected.

This commit really is "fix the OFDM duration calculation to match reality when
running in 802.11g mode."

The AR5212 init vals set AR_MISC_MODE to 0x0 and all the bits that can be set are
set through code.

The AR5416 and later initvals set AR_MISC_MODE to various other values (with
the AR5212 AR_MISC_MODE options cleared), which include AR_PCU_CCK_SIFS_MODE .
This adds 6uS to SIFS on non-CCK frames when transmitting.

This fixes the issue where _DATA_ 802.11g OFDM frames were being TX'ed with
the ACK duration set to 38uS, not 44uS as on the AR5212 (and other devices.)

The AR5212 TX pathway obeys the software-programmed duration field in the packet,
but the 11n TX pathway overrides that with a hardware-calculated duration. This
was getting it wrong because of the above AR_MISC_MODE setting. I've verified
that 11g data OFDM frames are now being TXed with the correct ACK+SIFS duration
programmed in.

For chips that are full reset in ar5416ChipReset(), save and restore the TSF.

Merlin (ar9280) and later were full-reset if they're doing open-loop TX
power control but the TSF wasn't being saved/restored.

Add ar5212SetTsf64() which sets the 64 bit TSF appropriately.

Fix typo in SIFS setup

Add a couple of functions to check NF calibration progress / completion.

correct SIFS setting; there is a 2usec adjustment between the calculated
value and what the hardware requires (based on inspection of INI values)

Submitted by: Jiri Fojtasek <jiri.fojtasek@hlohovec.net>

Overhaul regulatory support:
o remove HAL_CHANNEL; convert the hal to use net80211 channels; this
mostly involves mechanical changes to variable names and channel
attribute macros
o gut HAL_CHANNEL_PRIVATE as most of the contents are now redundant
with the net80211 channel available
o change api for ath_hal_init_channels: no more reglass id's, no more outdoor
indication (was a noop), anM contents
o add ath_hal_getchannels to have the hal construct a channel list without
altering runtime state; this is used to retrieve the calibration list for
the device in ath_getradiocaps
o add ath_hal_set_channels to take a channel list and regulatory data from
above and construct internal state to match (maps frequencies for 900MHz
cards, setup for CTL lookups, etc)
o compact the private channel table: we keep one private channel
per frequency instead of one per HAL_CHANNEL; this gives a big
space savings and potentially improves ani and calibration by
sharing state (to be seen; didn't see anything in testing); a new config
option AH_MAXCHAN controls the table size (default to 96 which
was chosen to be ~3x the largest expected size)
o shrink ani state and change to mirror private channel table (one entry per
frequency indexed by ic_devdata)
o move ani state flags to private channel state
o remove country codes; use net80211 definitions instead
o remove GSM regulatory support; it's no longer needed now that we
pass in channel lists from above
o consolidate ADHOC_NO_11A attribute with DISALLOW_ADHOC_11A
o simplify initial channel list construction based on the EEPROM contents;
we preserve country code support for now but may want to just fallback
to a WWR sku and dispatch the discovered country code up to user space
so the channel list can be constructed using the master regdomain tables
o defer to net80211 for max antenna gain
o eliminate sorting of internal channel table; now that we use ic_devdata
as an index, table lookups are O(1)
o remove internal copy of the country code; the public one is sufficient
o remove AH_SUPPORT_11D conditional compilation; we always support 11d
o remove ath_hal_ispublicsafetysku; not needed any more
o remove ath_hal_isgsmsku; no more GSM stuff
o move Conformance Test Limit (CTL) state from private channel to a lookup
using per-band pointers cached in the private state block
o remove regulatory class id support; was unused and belongs in net80211
o fix channel list construction to set IEEE80211_CHAN_NOADHOC,
IEEE80211_CHAN_NOHOSTAP, and IEEE80211_CHAN_4MSXMIT
o remove private channel flags CHANNEL_DFS and CHANNEL_4MS_LIMIT; these are
now set in the constructed net80211 channel
o store CHANNEL_NFCREQUIRED (Noise Floor Required) channel attribute in one
of the driver-private flag bits of the net80211 channel
o move 900MHz frequency mapping into the hal; the mapped frequency is stored
in the private channel and used throughout the hal (no more mapping in the
driver and/or net80211)
o remove ath_hal_mhz2ieee; it's no longer needed as net80211 does the
calculation and available in the net80211 channel
o change noise floor calibration logic to work with compacted private channel
table setup; this may require revisiting as we no longer can distinguish
channel attributes (e.g. 11b vs 11g vs turbo) but since the data is used
only to calculate status data we can live with it for now
o change ah_getChipPowerLimits internal method to operate on a single channel
instead of all channels in the private channel table
o add ath_hal_gethwchannel to map a net80211 channel to a h/w frequency
(always the same except for 900MHz channels)
o add HAL_EEBADREG and HAL_EEBADCC status codes to better identify regulatory
problems
o remove CTRY_DEBUG and CTRY_DEFAULT enum's; these come from net80211 now
o change ath_hal_getwirelessmodes to really return wireless modes supported
by the hardware (was previously applying regulatory constraints)
o return channel interference status with IEEE80211_CHANSTATE_CWINT (should
change to a callback so hal api's can take const pointers)
o remove some #define's no longer needed with the inclusion of
<net80211/_ieee80211.h>

Sponsored by: Carlson Wireless

correct typo that left programmed sifs time in the slot time
(to be applied on subsequent resets)

Submitted by: Jiri Fojtasek <jiri.fojtasek@hlohovec.net>

add missing break

Coverity ID: 4159

import ath hal

Replace most compile-time support options with linker sets for
chip and RF backend support:
o add OS_DATA_SET and OS_SET_DECLARE os requirements for setting
up linker sets
o add AH_CHIP macro for registering chip support (e.g. 5210)
o add AH_RF macro for registering RF support (e.g. 2413); note
this isn't required for single chip solutions where there's no
ambiguity (e.g. 5416/9160+2133) but for 5212 class parts it's
required because of the multi-chip solutions
o remove all uses of AH_SUPPORT_AR5210, AH_SUPPORT_AR5211, AH_SUPPORT_5212,
and AH_SUPPORT_AR9160; still need AH_SUPPORT_AR5416 to enable the 11n
descriptor formats and 5312 support is presently broken
o remove all uses of AH_SUPPORT_2133, AH_SUPPORT_2413, AH_SUPPORT_5111,
AH_SUPPORT_5112, AH_SUPPORT_2417, AH_SUPPORT_2425, and AH_SUPPORT_5413;
5312-related support still requires fixup

Remaining issues:
o fixup SoC attach
o ath_hal_attach uses a hack to probe w/o access to the vendorid
o fallback handling of parts w/o a macrev needs to be restored

Update to later code from my repository:
o many bug fixes
o add new periodic calibration api
o break up 5416 periodic calibration code in preparation for 928x
o move get noise floor to rf backends
o 5416-specific ani (still disabled)
o modularize 5210 eeprom format a la other eeprom formats
o start cleaning up regdomain code
o prepare for proper 1/2 and 1/4 width channel support
o bring back 900MHz card support
o clean up 5212 rf version handling
o add 1/2 and 1/4 width channel support for 5212 parts
o split 5212 rfgain handling out
o improve ani debugging
o add AH_USE_INIPDGAIN compile option
o purge a bunch of dead 5212 state
o add 1/2 and 1/4 rate modes
o remove HAL_CAP_CHAN_HALFRATE and HAL_CAP_CHAN_QUARTERRATE; the
same info can now be deduced from the set of supported modes

virgin import of ath hal