madwifi: add ap mode specific improvements to the calibration process. reported to...

SVN-Revision: 10416

diff --git a/package/madwifi/patches/315-power_drop_PR1695.patch b/package/madwifi/patches/315-power_drop_PR1695.patch
deleted file mode 100644 (file)
index 6b512b5..0000000
--- a/package/madwifi/patches/315-power_drop_PR1695.patch
+++ /dev/null
@@ -1,39 +0,0 @@
-The attached patch fixes the problem of very weak packets being send out
-after periodic calibration
-
-Signed-off-by: Karol Kowalik <karol.kowalik@cnri.dit.ie>
-Index: madwifi-dfs-r3252/ath/if_ath.c
-===================================================================
---- madwifi-dfs-r3252.orig/ath/if_ath.c        2008-01-26 03:56:26.461576124 +0100
-+++ madwifi-dfs-r3252/ath/if_ath.c     2008-01-26 03:58:50.628969172 +0100
-@@ -8875,6 +8875,9 @@
-       struct ieee80211com *ic = &sc->sc_ic;
-       /* u_int32_t nchans; */
-       HAL_BOOL isIQdone = AH_FALSE;
-+      u_int8_t papd_probe_power;
-+      u_int8_t papd_probe_power_max = 63;
-+      u_int16_t crnt_power_hdBm = sc->sc_curtxpow;
- 
-       sc->sc_stats.ast_per_cal++;
-       DPRINTF(sc, ATH_DEBUG_CALIBRATE, 
-@@ -8912,6 +8915,20 @@
-               sc->sc_stats.ast_per_calfail++;
-       }
- 
-+      /*
-+      * After calibration is done we need to update AR5K_PHY_PAPD_PROBE
-+      * register with the probe_tx_power equal to current tx_power
-+      * otherwise a power drop may be observed
-+      */
-+      crnt_power_hdBm = crnt_power_hdBm <= ic->ic_txpowlimit ? crnt_power_hdBm : ic->ic_txpowlimit;
-+      papd_probe_power = papd_probe_power_max - (ic->ic_txpowlimit - crnt_power_hdBm);
-+#define AR5K_PHY_PAPD_PROBE_TX_NEXT 0x00008000
-+#define AR5K_PHY_PAPD_PROBE 0x9930
-+      OS_REG_WRITE(ah, AR5K_PHY_PAPD_PROBE,
-+      AR5K_PHY_PAPD_PROBE_TX_NEXT | (papd_probe_power << 9));
-+#undef AR5K_PHY_PAPD_PROBE_TX_NEXT
-+#undef AR5K_PHY_PAPD_PROBE
-+
-       ath_hal_process_noisefloor(ah);
-       if (isIQdone == AH_TRUE) {
-               /* Unless user has overridden calibration interval,

diff --git a/package/madwifi/patches/330-beaconcal.patch b/package/madwifi/patches/330-beaconcal.patch
new file mode 100644 (file)
index 0000000..7dc7b93
--- /dev/null
+++ b/package/madwifi/patches/330-beaconcal.patch
@@ -0,0 +1,155 @@
+Index: madwifi-trunk-r3314/ath/if_ath.c
+===================================================================
+--- madwifi-trunk-r3314.orig/ath/if_ath.c      2008-02-06 20:27:16.005587752 +0100
++++ madwifi-trunk-r3314/ath/if_ath.c   2008-02-06 22:06:51.778996341 +0100
+@@ -395,6 +395,7 @@
+ static int maxvaps = -1;
+ static int outdoor = -1;
+ static int xchanmode = -1;
++static int beacon_cal = 1;
+ 
+ static const char *hal_status_desc[] = {
+       "No error",
+@@ -420,6 +421,7 @@
+ };
+ 
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,52))
++MODULE_PARM(beacon_cal, "i");
+ MODULE_PARM(countrycode, "i");
+ MODULE_PARM(maxvaps, "i");
+ MODULE_PARM(outdoor, "i");
+@@ -432,6 +434,7 @@
+ MODULE_PARM(ratectl, "s");
+ #else
+ #include <linux/moduleparam.h>
++module_param(beacon_cal, int, 0600);
+ module_param(countrycode, int, 0600);
+ module_param(maxvaps, int, 0600);
+ module_param(outdoor, int, 0600);
+@@ -2594,7 +2597,8 @@
+               }
+               if (!sc->sc_invalid) {
+                       del_timer_sync(&sc->sc_dfs_cac_timer);
+-                      del_timer_sync(&sc->sc_cal_ch);
++                      if (!sc->sc_beacon_cal)
++                              del_timer_sync(&sc->sc_cal_ch);
+               }
+               ath_draintxq(sc);
+               if (!sc->sc_invalid) {
+@@ -2611,6 +2615,20 @@
+       return 0;
+ }
+ 
++static void ath_set_beacon_cal(struct ath_softc *sc, int val)
++{
++      if (sc->sc_beacon_cal == !!val)
++              return;
++
++      if (val) {
++              del_timer_sync(&sc->sc_cal_ch);
++      } else {
++              sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
++              add_timer(&sc->sc_cal_ch);
++      }
++      sc->sc_beacon_cal = !!val && beacon_cal;
++}
++
+ /*
+  * Stop the device, grabbing the top-level lock to protect
+  * against concurrent entry through ath_init (which can happen
+@@ -5141,6 +5159,8 @@
+                       "Invoking ath_hal_txstart with sc_bhalq: %d\n",
+                       sc->sc_bhalq);
+               ath_hal_txstart(ah, sc->sc_bhalq);
++              if (sc->sc_beacon_cal && (jiffies > sc->sc_lastcal + (ath_calinterval * HZ)))
++                      ath_calibrate((unsigned long) sc->sc_dev);
+ 
+               sc->sc_stats.ast_be_xmit++;             /* XXX per-VAP? */
+       }
+@@ -5390,6 +5410,7 @@
+               ath_hal_beacontimers(ah, &bs);
+               sc->sc_imask |= HAL_INT_BMISS;
+               ath_hal_intrset(ah, sc->sc_imask);
++              ath_set_beacon_cal(sc, 0);
+       } else {
+               ath_hal_intrset(ah, 0);
+               if (reset_tsf)
+@@ -5401,8 +5422,11 @@
+                        */
+                       intval |= HAL_BEACON_ENA;
+                       sc->sc_imask |= HAL_INT_SWBA;
++                      ath_set_beacon_cal(sc, 1);
+                       ath_beaconq_config(sc);
+-              }
++              } else
++                      ath_set_beacon_cal(sc, 0);
++
+ #ifdef ATH_SUPERG_DYNTURBO
+               ath_beacon_dturbo_config(vap, intval &
+                               ~(HAL_BEACON_RESET_TSF | HAL_BEACON_ENA));
+@@ -8864,6 +8888,9 @@
+                       /* Enter DFS wait period */
+                       mod_timer(&sc->sc_dfs_cac_timer,
+                               jiffies + (sc->sc_dfs_cac_period * HZ));
++
++                      /* This is a good time to start a calibration */
++                      ath_set_beacon_cal(sc, 1);
+               }
+               /*
+                * re configure beacons when it is a turbo mode switch.
+@@ -8973,8 +9000,11 @@
+               sc->sc_curchan.channel, sc->sc_curchan.channelFlags,
+               isIQdone ? "done" : "not done");
+ 
+-      sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
+-      add_timer(&sc->sc_cal_ch);
++      sc->sc_lastcal = jiffies;
++      if (!sc->sc_beacon_cal) {
++              sc->sc_cal_ch.expires = jiffies + (ath_calinterval * HZ);
++              add_timer(&sc->sc_cal_ch);
++      }
+ }
+ 
+ static void
+@@ -9081,7 +9111,8 @@
+               ieee80211_state_name[vap->iv_state],
+               ieee80211_state_name[nstate]);
+ 
+-      del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
++      if (!sc->sc_beacon_cal)
++              del_timer(&sc->sc_cal_ch);              /* periodic calibration timer */
+ 
+       ath_hal_setledstate(ah, leds[nstate]);  /* set LED */
+       netif_stop_queue(dev);                  /* before we do anything else */
+@@ -9306,7 +9337,8 @@
+                               "VAP -> DFSWAIT_PENDING \n");
+                       /* start calibration timer with a really small value 
+                        * 1/10 sec */
+-                      mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
++                      if (!sc->sc_beacon_cal)
++                              mod_timer(&sc->sc_cal_ch, jiffies + (HZ/10));
+                       /* wake the receiver */
+                       netif_wake_queue(dev);
+                       /* don't do the other usual stuff... */
+@@ -9349,7 +9381,7 @@
+       error = avp->av_newstate(vap, nstate, arg);
+ 
+       /* Finally, start any timers. */
+-      if (nstate == IEEE80211_S_RUN) {
++      if (nstate == IEEE80211_S_RUN && !sc->sc_beacon_cal) {
+               /* start periodic recalibration timer */
+               mod_timer(&sc->sc_cal_ch, jiffies + (ath_calinterval * HZ));
+       }
+Index: madwifi-trunk-r3314/ath/if_athvar.h
+===================================================================
+--- madwifi-trunk-r3314.orig/ath/if_athvar.h   2008-02-06 20:27:08.969186784 +0100
++++ madwifi-trunk-r3314/ath/if_athvar.h        2008-02-06 20:27:24.670081522 +0100
+@@ -778,6 +778,8 @@
+       struct ieee80211vap **sc_bslot;         /* beacon xmit slots */
+       int sc_bnext;                           /* next slot for beacon xmit */
+ 
++      int sc_beacon_cal;                      /* use beacon timer for calibration */
++      u_int64_t sc_lastcal;                   /* last time the calibration was performed */
+       struct timer_list sc_cal_ch;            /* calibration timer */
+       HAL_NODE_STATS sc_halstats;             /* station-mode rssi stats */
+