Prepare for improved (read: pcie) suspend/resume support.

* Flesh out the pcie disable method for 11n chips, as they were defaulting
  to the AR5212 (empty) PCIe disable method.

* Add accessor macros for the HAL PCIe enable/disable calls.

* Call disable on ath_suspend()

* Call enable on ath_resume()

NOTE:

* This has nothing to do with the NIC sleep/run state - the NIC still
  will stay in network-run state rather than supporting network-sleep
  state.  This is preparation work for supporting correct suspend/resume
  WARs for the 11n PCIe NICs.

TODO:

* It may be feasible at this point to keep the chip powered down during
  initial probe/attach and only power it up upon the first configure/reset
  pass.  This however would require correct (for values of "correct")
  tracking of the NIC power configuration state from the driver and that
  just isn't attempted at the moment.

Tested:

* AR9280 on my Lenovo T60, but with no suspend/resume pass (yet).

1 files changed, 8 insertions, 0 deletions

diff --git a/sys/dev/ath/if_athvar.h b/sys/dev/ath/if_athvar.h
index aafb338..3a97669 100644
--- a/sys/dev/ath/if_athvar.h
+++ b/sys/dev/ath/if_athvar.h
@@ -996,6 +996,14 @@ void	ath_intr(void *);
 	((*(_ah)->ah_gpioSetIntr)((_ah), (_gpio), (_b)))
 
 /*
+ * PCIe suspend/resume/poweron/poweroff related macros
+ */
+#define	ath_hal_enablepcie(_ah, _restore) \
+	((*(_ah)->ah_configPCIE)((_ah), (_restore)))
+#define	ath_hal_disablepcie(_ah) \
+	((*(_ah)->ah_disablePCIE)((_ah)))
+
+/*
  * This is badly-named; you need to set the correct parameters
  * to begin to receive useful radar events; and even then
  * it doesn't "enable" DFS. See the ath_dfs/null/ module for