4 files changed, 33 insertions, 2 deletions

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 10c812e353a..f5896aa3000 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -410,12 +410,36 @@ static void ar9003_hw_set11n_ratescenario(struct ath_hw *ah, void *ds,
 static void ar9003_hw_set11n_aggr_first(struct ath_hw *ah, void *ds,
                                         u32 aggrLen)
 {
+#define FIRST_DESC_NDELIMS 60
         struct ar9003_txc *ads = (struct ar9003_txc *) ds;
 
         ads->ctl12 |= (AR_IsAggr | AR_MoreAggr);
 
-        ads->ctl17 &= ~AR_AggrLen;
-        ads->ctl17 |= SM(aggrLen, AR_AggrLen);
+        if (ah->ent_mode & AR_ENT_OTP_MPSD) {
+                u32 ctl17, ndelim;
+                /*
+                 * Add delimiter when using RTS/CTS with aggregation
+                 * and non enterprise AR9003 card
+                 */
+                ctl17 = ads->ctl17;
+                ndelim = MS(ctl17, AR_PadDelim);
+
+                if (ndelim < FIRST_DESC_NDELIMS) {
+                        aggrLen += (FIRST_DESC_NDELIMS - ndelim) * 4;
+                        ndelim = FIRST_DESC_NDELIMS;
+                }
+
+                ctl17 &= ~AR_AggrLen;
+                ctl17 |= SM(aggrLen, AR_AggrLen);
+
+                ctl17 &= ~AR_PadDelim;
+                ctl17 |= SM(ndelim, AR_PadDelim);
+
+                ads->ctl17 = ctl17;
+        } else {
+                ads->ctl17 &= ~AR_AggrLen;
+                ads->ctl17 |= SM(aggrLen, AR_AggrLen);
+        }
 }
 
 static void ar9003_hw_set11n_aggr_middle(struct ath_hw *ah, void *ds,
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index e75d8e8cf4d..75e23632b96 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1952,6 +1952,9 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
         if (AR_SREV_9300_20_OR_LATER(ah))
                 pCap->hw_caps |= ATH9K_HW_CAP_RAC_SUPPORTED;
 
+        if (AR_SREV_9300_20_OR_LATER(ah))
+                ah->ent_mode = REG_READ(ah, AR_ENT_OTP);
+
         if (AR_SREV_9287_11_OR_LATER(ah) || AR_SREV_9271(ah))
                 pCap->hw_caps |= ATH9K_HW_CAP_SGI_20;
 
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index f821a28bcda..15f51c8943a 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -803,6 +803,9 @@ struct ath_hw {
          * this register when in sleep states.
          */
         u32 WARegVal;
+
+        /* Enterprise mode cap */
+        u32 ent_mode;
 };
 
 static inline struct ath_common *ath9k_hw_common(struct ath_hw *ah)
diff --git a/drivers/net/wireless/ath/ath9k/reg.h b/drivers/net/wireless/ath/ath9k/reg.h
index ac6a13e2735..60826b82f4a 100644
--- a/drivers/net/wireless/ath/ath9k/reg.h
+++ b/drivers/net/wireless/ath/ath9k/reg.h
@@ -1067,6 +1067,7 @@ enum {
 #define AR_INTR_PRIO_ASYNC_ENABLE 0x40d4
 #define AR_ENT_OTP                0x40d8
 #define AR_ENT_OTP_CHAIN2_DISABLE               0x00020000
+#define AR_ENT_OTP_MPSD         0x00800000
 
 #define AR_RTC_9300_PLL_DIV          0x000003ff
 #define AR_RTC_9300_PLL_DIV_S        0