package/mac80211/patches/550-ath9k_interrupt_mask_optimization.patch

   1 --- a/drivers/net/wireless/ath/ath9k/mac.c
   2 +++ b/drivers/net/wireless/ath/ath9k/mac.c
   3 @@ -117,12 +117,11 @@ EXPORT_SYMBOL(ath9k_hw_numtxpending);
   4  bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
   5  {
   6         u32 txcfg, curLevel, newLevel;
   7 -       enum ath9k_int omask;
   8
   9         if (ah->tx_trig_level >= ah->config.max_txtrig_level)
  10                 return false;
  11
  12 -       omask = ath9k_hw_set_interrupts(ah, ah->imask & ~ATH9K_INT_GLOBAL);
  13 +       ath9k_hw_disable_interrupts(ah);
  14
  15         txcfg = REG_READ(ah, AR_TXCFG);
  16         curLevel = MS(txcfg, AR_FTRIG);
  17 @@ -136,7 +135,7 @@ bool ath9k_hw_updatetxtriglevel(struct a
  18                 REG_WRITE(ah, AR_TXCFG,
  19                           (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
  20
  21 -       ath9k_hw_set_interrupts(ah, omask);
  22 +       ath9k_hw_enable_interrupts(ah);
  23
  24         ah->tx_trig_level = newLevel;
  25
  26 @@ -849,28 +848,59 @@ bool ath9k_hw_intrpend(struct ath_hw *ah
  27  }
  28  EXPORT_SYMBOL(ath9k_hw_intrpend);
  29
  30 -enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah,
  31 -                                             enum ath9k_int ints)
  32 +void ath9k_hw_disable_interrupts(struct ath_hw *ah)
  33 +{
  34 +       struct ath_common *common = ath9k_hw_common(ah);
  35 +
  36 +       ath_print(common, ATH_DBG_INTERRUPT, "disable IER\n");
  37 +       REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
  38 +       (void) REG_READ(ah, AR_IER);
  39 +       if (!AR_SREV_9100(ah)) {
  40 +               REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
  41 +               (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
  42 +
  43 +               REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
  44 +               (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
  45 +       }
  46 +}
  47 +EXPORT_SYMBOL(ath9k_hw_disable_interrupts);
  48 +
  49 +void ath9k_hw_enable_interrupts(struct ath_hw *ah)
  50 +{
  51 +       struct ath_common *common = ath9k_hw_common(ah);
  52 +
  53 +       if (!(ah->imask & ATH9K_INT_GLOBAL))
  54 +               return;
  55 +
  56 +       ath_print(common, ATH_DBG_INTERRUPT, "enable IER\n");
  57 +       REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
  58 +       if (!AR_SREV_9100(ah)) {
  59 +               REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
  60 +                         AR_INTR_MAC_IRQ);
  61 +               REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
  62 +
  63 +
  64 +               REG_WRITE(ah, AR_INTR_SYNC_ENABLE,
  65 +                         AR_INTR_SYNC_DEFAULT);
  66 +               REG_WRITE(ah, AR_INTR_SYNC_MASK,
  67 +                         AR_INTR_SYNC_DEFAULT);
  68 +       }
  69 +       ath_print(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
  70 +                 REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
  71 +}
  72 +EXPORT_SYMBOL(ath9k_hw_enable_interrupts);
  73 +
  74 +void ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints)
  75  {
  76         enum ath9k_int omask = ah->imask;
  77         u32 mask, mask2;
  78         struct ath9k_hw_capabilities *pCap = &ah->caps;
  79         struct ath_common *common = ath9k_hw_common(ah);
  80
  81 -       ath_print(common, ATH_DBG_INTERRUPT, "0x%x => 0x%x\n", omask, ints);
  82 -
  83 -       if (omask & ATH9K_INT_GLOBAL) {
  84 -               ath_print(common, ATH_DBG_INTERRUPT, "disable IER\n");
  85 -               REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
  86 -               (void) REG_READ(ah, AR_IER);
  87 -               if (!AR_SREV_9100(ah)) {
  88 -                       REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
  89 -                       (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
  90 +       if (!(ints & ATH9K_INT_GLOBAL))
  91 +               ath9k_hw_enable_interrupts(ah);
  92
  93 -                       REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
  94 -                       (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
  95 -               }
  96 -       }
  97 +       ath_print(common, ATH_DBG_INTERRUPT, "0x%x => 0x%x\n", omask, ints);
  98
  99         /* TODO: global int Ref count */
 100         mask = ints & ATH9K_INT_COMMON;
 101 @@ -946,24 +976,8 @@ enum ath9k_int ath9k_hw_set_interrupts(s
 102                         REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
 103         }
 104
 105 -       if (ints & ATH9K_INT_GLOBAL) {
 106 -               ath_print(common, ATH_DBG_INTERRUPT, "enable IER\n");
 107 -               REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
 108 -               if (!AR_SREV_9100(ah)) {
 109 -                       REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
 110 -                                 AR_INTR_MAC_IRQ);
 111 -                       REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
 112 -
 113 -
 114 -                       REG_WRITE(ah, AR_INTR_SYNC_ENABLE,
 115 -                                 AR_INTR_SYNC_DEFAULT);
 116 -                       REG_WRITE(ah, AR_INTR_SYNC_MASK,
 117 -                                 AR_INTR_SYNC_DEFAULT);
 118 -               }
 119 -               ath_print(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
 120 -                         REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
 121 -       }
 122 +       ath9k_hw_enable_interrupts(ah);
 123
 124 -       return omask;
 125 +       return;
 126  }
 127  EXPORT_SYMBOL(ath9k_hw_set_interrupts);
 128 --- a/drivers/net/wireless/ath/ath9k/mac.h
 129 +++ b/drivers/net/wireless/ath/ath9k/mac.h
 130 @@ -669,6 +669,7 @@ enum ath9k_key_type {
 131
 132  struct ath_hw;
 133  struct ath9k_channel;
 134 +enum ath9k_int;
 135
 136  u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q);
 137  void ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp);
 138 @@ -700,8 +701,9 @@ int ath9k_hw_beaconq_setup(struct ath_hw
 139
 140  /* Interrupt Handling */
 141  bool ath9k_hw_intrpend(struct ath_hw *ah);
 142 -enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah,
 143 -                                      enum ath9k_int ints);
 144 +void ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints);
 145 +void ath9k_hw_enable_interrupts(struct ath_hw *ah);
 146 +void ath9k_hw_disable_interrupts(struct ath_hw *ah);
 147
 148  void ar9002_hw_attach_mac_ops(struct ath_hw *ah);
 149
 150 --- a/drivers/net/wireless/ath/ath9k/main.c
 151 +++ b/drivers/net/wireless/ath/ath9k/main.c
 152 @@ -237,7 +237,7 @@ int ath_set_channel(struct ath_softc *sc
 153          * hardware at the new frequency, and then re-enable
 154          * the relevant bits of the h/w.
 155          */
 156 -       ath9k_hw_set_interrupts(ah, 0);
 157 +       ath9k_hw_disable_interrupts(ah);
 158         ath_drain_all_txq(sc, false);
 159         stopped = ath_stoprecv(sc);
 160
 161 @@ -644,7 +644,7 @@ void ath9k_tasklet(unsigned long data)
 162                         ath_gen_timer_isr(sc->sc_ah);
 163
 164         /* re-enable hardware interrupt */
 165 -       ath9k_hw_set_interrupts(ah, ah->imask);
 166 +       ath9k_hw_enable_interrupts(ah);
 167         ath9k_ps_restore(sc);
 168  }
 169
 170 @@ -743,7 +743,7 @@ irqreturn_t ath_isr(int irq, void *dev)
 171                  * interrupt; otherwise it will continue to
 172                  * fire.
 173                  */
 174 -               ath9k_hw_set_interrupts(ah, 0);
 175 +               ath9k_hw_disable_interrupts(ah);
 176                 /*
 177                  * Let the hal handle the event. We assume
 178                  * it will clear whatever condition caused
 179 @@ -752,7 +752,7 @@ irqreturn_t ath_isr(int irq, void *dev)
 180                 spin_lock(&common->cc_lock);
 181                 ath9k_hw_proc_mib_event(ah);
 182                 spin_unlock(&common->cc_lock);
 183 -               ath9k_hw_set_interrupts(ah, ah->imask);
 184 +               ath9k_hw_enable_interrupts(ah);
 185         }
 186
 187         if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
 188 @@ -769,8 +769,8 @@ chip_reset:
 189         ath_debug_stat_interrupt(sc, status);
 190
 191         if (sched) {
 192 -               /* turn off every interrupt except SWBA */
 193 -               ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
 194 +               /* turn off every interrupt */
 195 +               ath9k_hw_disable_interrupts(ah);
 196                 tasklet_schedule(&sc->intr_tq);
 197         }
 198
 199 @@ -925,7 +925,7 @@ void ath_radio_disable(struct ath_softc
 200         }
 201
 202         /* Disable interrupts */
 203 -       ath9k_hw_set_interrupts(ah, 0);
 204 +       ath9k_hw_disable_interrupts(ah);
 205
 206         ath_drain_all_txq(sc, false);   /* clear pending tx frames */
 207         ath_stoprecv(sc);               /* turn off frame recv */
 208 @@ -962,7 +962,7 @@ int ath_reset(struct ath_softc *sc, bool
 209
 210         ieee80211_stop_queues(hw);
 211
 212 -       ath9k_hw_set_interrupts(ah, 0);
 213 +       ath9k_hw_disable_interrupts(ah);
 214         ath_drain_all_txq(sc, retry_tx);
 215         ath_stoprecv(sc);
 216         ath_flushrecv(sc);
 217 @@ -1367,7 +1367,7 @@ static void ath9k_stop(struct ieee80211_
 218
 219         /* make sure h/w will not generate any interrupt
 220          * before setting the invalid flag. */
 221 -       ath9k_hw_set_interrupts(ah, 0);
 222 +       ath9k_hw_disable_interrupts(ah);
 223
 224         if (!(sc->sc_flags & SC_OP_INVALID)) {
 225                 ath_drain_all_txq(sc, false);
 226 --- a/drivers/net/wireless/ath/ath9k/beacon.c
 227 +++ b/drivers/net/wireless/ath/ath9k/beacon.c
 228 @@ -500,10 +500,10 @@ static void ath_beacon_config_ap(struct
 229
 230         /* Set the computed AP beacon timers */
 231
 232 -       ath9k_hw_set_interrupts(ah, 0);
 233 +       ath9k_hw_disable_interrupts(ah);
 234         ath9k_beacon_init(sc, nexttbtt, intval);
 235         sc->beacon.bmisscnt = 0;
 236 -       ath9k_hw_set_interrupts(ah, ah->imask);
 237 +       ath9k_hw_enable_interrupts(ah);
 238
 239         /* Clear the reset TSF flag, so that subsequent beacon updation
 240            will not reset the HW TSF. */
 241 @@ -635,7 +635,7 @@ static void ath_beacon_config_sta(struct
 242
 243         /* Set the computed STA beacon timers */
 244
 245 -       ath9k_hw_set_interrupts(ah, 0);
 246 +       ath9k_hw_disable_interrupts(ah);
 247         ath9k_hw_set_sta_beacon_timers(ah, &bs);
 248         ah->imask |= ATH9K_INT_BMISS;
 249         ath9k_hw_set_interrupts(ah, ah->imask);
 250 @@ -683,10 +683,10 @@ static void ath_beacon_config_adhoc(stru
 251
 252         /* Set the computed ADHOC beacon timers */
 253
 254 -       ath9k_hw_set_interrupts(ah, 0);
 255 +       ath9k_hw_disable_interrupts(ah);
 256         ath9k_beacon_init(sc, nexttbtt, intval);
 257         sc->beacon.bmisscnt = 0;
 258 -       ath9k_hw_set_interrupts(ah, ah->imask);
 259 +       ath9k_hw_enable_interrupts(ah);
 260  }
 261
 262  void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
 263 --- a/drivers/net/wireless/ath/ath9k/gpio.c
 264 +++ b/drivers/net/wireless/ath/ath9k/gpio.c
 265 @@ -275,7 +275,7 @@ static void ath9k_gen_timer_start(struct
 266         ath9k_hw_gen_timer_start(ah, timer, timer_next, timer_period);
 267
 268         if ((ah->imask & ATH9K_INT_GENTIMER) == 0) {
 269 -               ath9k_hw_set_interrupts(ah, 0);
 270 +               ath9k_hw_disable_interrupts(ah);
 271                 ah->imask |= ATH9K_INT_GENTIMER;
 272                 ath9k_hw_set_interrupts(ah, ah->imask);
 273         }
 274 @@ -289,7 +289,7 @@ static void ath9k_gen_timer_stop(struct
 275
 276         /* if no timer is enabled, turn off interrupt mask */
 277         if (timer_table->timer_mask.val == 0) {
 278 -               ath9k_hw_set_interrupts(ah, 0);
 279 +               ath9k_hw_disable_interrupts(ah);
 280                 ah->imask &= ~ATH9K_INT_GENTIMER;
 281                 ath9k_hw_set_interrupts(ah, ah->imask);
 282         }