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.

1 files changed, 20 insertions, 5 deletions

diff --git a/sys/modules/ath/Makefile b/sys/modules/ath/Makefile
index e5fc7f6..b66ec09 100644
--- a/sys/modules/ath/Makefile
+++ b/sys/modules/ath/Makefile
@@ -75,13 +75,14 @@ SRCS+=	ar2425.c
 SRCS+=	ar5413.c
 
 #
-# AR5416, AR9160 support; these are 11n parts but only really
-# supported (right now) operating in legacy mode.  Note enabling
-# this support requires defining AH_SUPPORT_AR5416 in opt_ah.h
-# so the 11n tx/rx descriptor format is handled.
+# AR5416, AR9130, AR9160, AR9220, AR9280, AR9285 support.
+
+# Note enabling this support requires defining AH_SUPPORT_AR5416
+# in opt_ah.h so the 11n tx/rx descriptor format is handled.
 #
 # NB: 9160 depends on 5416 but 5416 does not require 9160
 #
+# + 5416 (Owl)
 .PATH:	${.CURDIR}/../../dev/ath/ath_hal/ar5416
 SRCS+=	ah_eeprom_v14.c ah_eeprom_v4k.c \
 	ar5416_ani.c ar5416_attach.c ar5416_beacon.c ar5416_cal.c \
@@ -90,14 +91,28 @@ SRCS+=	ah_eeprom_v14.c ah_eeprom_v4k.c \
 	ar5416_misc.c ar5416_phy.c ar5416_power.c ar5416_recv.c \
 	ar5416_reset.c ar5416_xmit.c
 
-# RF backend for 5416 and 9160
+# RF backend for 5416, 9130 and 9160
 SRCS+=	ar2133.c
 
+# + AR9160 (Sowl)
 .PATH:	${.CURDIR}/../../dev/ath/ath_hal/ar9001
 SRCS+=	ar9160_attach.c
 
+# + AR9130 - (Sowl) - Embedded (AR913x SoC)
+#
+# This requires AH_SUPPORT_AR9130 in order to function as some
+# register values have shifted for this chipset. Definig this however
+# (currently) breaks non-AR9130 chipsets - since this is an embedded
+# chipset and no other radios are glued to it, this shouldn't pose a
+# problem.
+SRCS+=	ar9130_attach.c ar9130_eeprom.c ar9130_phy.c
+
+# AR9002 series chips
+# + AR9220/AR9280 - Merlin
 .PATH:	${.CURDIR}/../../dev/ath/ath_hal/ar9002
 SRCS+=	ar9280.c ar9280_attach.c ar9280_olc.c
+
+# + AR9285 - Kite
 SRCS+=	ar9285.c ar9285_reset.c ar9285_attach.c ar9285_cal.c ar9285_phy.c
 SRCS+=	ar9285_diversity.c