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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-02-08 05:13:00 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2008-02-08 05:13:00 +0000
commit173844aad7dd88902cb0245a3c135f8251f53c64 (patch)
tree28ab7b4fcf237e367c291f9af8e23233720b811e
parentcb6a7699b800bbf69d6e8f2fe98cfdc11b9c8bed (diff)
madwifi: add ap mode specific improvements to the calibration process. reported to produce a noticeable increase in rx/tx strength
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10416 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--package/madwifi/patches/315-power_drop_PR1695.patch39
-rw-r--r--package/madwifi/patches/330-beaconcal.patch155
2 files changed, 155 insertions, 39 deletions
diff --git a/package/madwifi/patches/315-power_drop_PR1695.patch b/package/madwifi/patches/315-power_drop_PR1695.patch
deleted file mode 100644
index 6b512b564..000000000
--- 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
index 000000000..7dc7b937b
--- /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 */
+