AR5212 radar detection (was Fwd: svn commit: r240001 - head/sys/dev/ath/ath_hal/ar5212)

[Adrian Chadd]

Hi,

I've been doing some testing with this here AR5212 and straight pulse
detection (with no tuning for traffic interference or adjacent
traffic.)

This does fix most of the pulse detection issues I was seeing.
Everything except around 10uS pulses detect okay.

So next, NF calibration and tuning. Good luck brett!



Adrian


---------- Forwarded message ----------
From: Adrian Chadd <adrian at freebsd.org>
Date: 1 September 2012 21:56
Subject: svn commit: r240001 - head/sys/dev/ath/ath_hal/ar5212
To: src-committers at freebsd.org, svn-src-all at freebsd.org,
svn-src-head at freebsd.org


Author: adrian
Date: Sun Sep  2 04:56:29 2012
New Revision: 240001
URL: http://svn.freebsd.org/changeset/base/240001

Log:
  AR5212 radar pulse fixes.

  Fix the strong signal diversity capability setting - I had totally
  messed up the indentation.

  Set the default values to match what's in the .ini for now, rather than
  what values I had previously gleaned from places.  This seems to work
  quite well for the early AR5212 NICs I have.  Of course, later NICs
  have different PHYs and the radar configuration is very card/board
  dependent..

  Tested:

   * ath1: AR5212 mac 5.3 RF5111 phy 4.1
     ath1: 2GHz radio: 0x0023; 5GHz radio: 0x0017

  This detects 1, 5, 25, 50, 75, 100uS pulses reliably (with no interference.)

  However, 10uS pulses don't detect reliably. That may be around the
  transition between short and long pulses so some further tuning may
  improve things.

Modified:
  head/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c

Modified: head/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c
==============================================================================
--- head/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c       Sun Sep  2
04:39:07 2012        (r240000)
+++ head/sys/dev/ath/ath_hal/ar5212/ar5212_misc.c       Sun Sep  2
04:56:29 2012        (r240001)
@@ -960,13 +960,13 @@ ar5212SetCapability(struct ath_hal *ah,
                case 1: /* setting */
                        if (ahp->ah_phyPowerOn) {
                                if (capability == HAL_CAP_STRONG_DIV) {
-                                                       }
-                               v = OS_REG_READ(ah, AR_PHY_CCK_DETECT);
-                               if (setting)
-                                       v |=
AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
-                               else
-                                       v &=
~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
-                               OS_REG_WRITE(ah, AR_PHY_CCK_DETECT, v);
+                                       v = OS_REG_READ(ah, AR_PHY_CCK_DETECT);
+                                       if (setting)
+                                               v |=
AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
+                                       else
+                                               v &=
~AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV;
+                                       OS_REG_WRITE(ah, AR_PHY_CCK_DETECT, v);
+                               }
                        }
                        ahp->ah_diversity = (setting != 0);
                        return AH_TRUE;
@@ -1243,11 +1243,11 @@ ar5212EnableDfs(struct ath_hal *ah, HAL_
 /*
  * Parameters for the AR5212 PHY.
  */
-#define        AR5212_DFS_FIRPWR       -41
-#define        AR5212_DFS_RRSSI        12
-#define        AR5212_DFS_HEIGHT       20
-#define        AR5212_DFS_PRSSI        22
-#define        AR5212_DFS_INBAND       6
+#define        AR5212_DFS_FIRPWR       -35
+#define        AR5212_DFS_RRSSI        20
+#define        AR5212_DFS_HEIGHT       14
+#define        AR5212_DFS_PRSSI        6
+#define        AR5212_DFS_INBAND       4

 /*
  * Default parameters for the AR5413 PHY.
@@ -1261,7 +1261,6 @@ ar5212EnableDfs(struct ath_hal *ah, HAL_
 #define        AR5413_DFS_RELSTEP      31
 #define        AR5413_DFS_MAXLEN       255

-
 HAL_BOOL
 ar5212GetDfsDefaultThresh(struct ath_hal *ah, HAL_PHYERR_PARAM *pe)
 {