diff options
| -rw-r--r-- | package/mac80211/patches/470-ath5k_decrease_irq_load.patch | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/package/mac80211/patches/470-ath5k_decrease_irq_load.patch b/package/mac80211/patches/470-ath5k_decrease_irq_load.patch new file mode 100644 index 000000000..5273bb075 --- /dev/null +++ b/package/mac80211/patches/470-ath5k_decrease_irq_load.patch @@ -0,0 +1,140 @@ +--- a/drivers/net/wireless/ath/ath5k/ath5k.h ++++ b/drivers/net/wireless/ath/ath5k/ath5k.h +@@ -872,6 +872,19 @@ enum ath5k_int { + AR5K_INT_QTRIG = 0x40000000, /* Non common */ + AR5K_INT_GLOBAL = 0x80000000, + ++ AR5K_INT_TX_ALL = AR5K_INT_TXOK ++ | AR5K_INT_TXDESC ++ | AR5K_INT_TXERR ++ | AR5K_INT_TXEOL ++ | AR5K_INT_TXURN, ++ ++ AR5K_INT_RX_ALL = AR5K_INT_RXOK ++ | AR5K_INT_RXDESC ++ | AR5K_INT_RXERR ++ | AR5K_INT_RXNOFRM ++ | AR5K_INT_RXEOL ++ | AR5K_INT_RXORN, ++ + AR5K_INT_COMMON = AR5K_INT_RXOK + | AR5K_INT_RXDESC + | AR5K_INT_RXERR +--- a/drivers/net/wireless/ath/ath5k/base.c ++++ b/drivers/net/wireless/ath/ath5k/base.c +@@ -1444,6 +1444,21 @@ ath5k_receive_frame_ok(struct ath5k_soft + } + + static void ++ath5k_set_current_imask(struct ath5k_softc *sc) ++{ ++ enum ath5k_int imask = sc->imask; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&sc->irqlock, flags); ++ if (sc->rx_pending) ++ imask &= ~AR5K_INT_RX_ALL; ++ if (sc->tx_pending) ++ imask &= ~AR5K_INT_TX_ALL; ++ ath5k_hw_set_imr(sc->ah, imask); ++ spin_unlock_irqrestore(&sc->irqlock, flags); ++} ++ ++static void + ath5k_tasklet_rx(unsigned long data) + { + struct ath5k_rx_status rs = {}; +@@ -1506,6 +1521,8 @@ next: + } while (ath5k_rxbuf_setup(sc, bf) == 0); + unlock: + spin_unlock(&sc->rxbuflock); ++ sc->rx_pending = false; ++ ath5k_set_current_imask(sc); + } + + +@@ -1693,6 +1710,9 @@ ath5k_tasklet_tx(unsigned long data) + for (i=0; i < AR5K_NUM_TX_QUEUES; i++) + if (sc->txqs[i].setup && (sc->ah->ah_txq_isr & BIT(i))) + ath5k_tx_processq(sc, &sc->txqs[i]); ++ ++ sc->tx_pending = false; ++ ath5k_set_current_imask(sc); + } + + +@@ -2122,6 +2142,20 @@ ath5k_intr_calibration_poll(struct ath5k + * AR5K_REG_ENABLE_BITS(ah, AR5K_CR, AR5K_CR_SWI); */ + } + ++static void ++ath5k_schedule_rx(struct ath5k_softc *sc) ++{ ++ sc->rx_pending = true; ++ tasklet_schedule(&sc->rxtq); ++} ++ ++static void ++ath5k_schedule_tx(struct ath5k_softc *sc) ++{ ++ sc->tx_pending = true; ++ tasklet_schedule(&sc->txtq); ++} ++ + irqreturn_t + ath5k_intr(int irq, void *dev_id) + { +@@ -2164,7 +2198,7 @@ ath5k_intr(int irq, void *dev_id) + ieee80211_queue_work(sc->hw, &sc->reset_work); + } + else +- tasklet_schedule(&sc->rxtq); ++ ath5k_schedule_rx(sc); + } else { + if (status & AR5K_INT_SWBA) { + tasklet_hi_schedule(&sc->beacontq); +@@ -2182,10 +2216,10 @@ ath5k_intr(int irq, void *dev_id) + ath5k_hw_update_tx_triglevel(ah, true); + } + if (status & (AR5K_INT_RXOK | AR5K_INT_RXERR)) +- tasklet_schedule(&sc->rxtq); ++ ath5k_schedule_rx(sc); + if (status & (AR5K_INT_TXOK | AR5K_INT_TXDESC + | AR5K_INT_TXERR | AR5K_INT_TXEOL)) +- tasklet_schedule(&sc->txtq); ++ ath5k_schedule_tx(sc); + if (status & AR5K_INT_BMISS) { + /* TODO */ + } +@@ -2204,6 +2238,9 @@ ath5k_intr(int irq, void *dev_id) + + } while (ath5k_hw_is_intr_pending(ah) && --counter > 0); + ++ if (sc->rx_pending || sc->tx_pending) ++ ath5k_set_current_imask(sc); ++ + if (unlikely(!counter)) + ATH5K_WARN(sc, "too many interrupts, giving up for now\n"); + +@@ -2575,6 +2612,8 @@ done: + + static void stop_tasklets(struct ath5k_softc *sc) + { ++ sc->rx_pending = false; ++ sc->tx_pending = false; + tasklet_kill(&sc->rxtq); + tasklet_kill(&sc->txtq); + tasklet_kill(&sc->calib); +--- a/drivers/net/wireless/ath/ath5k/base.h ++++ b/drivers/net/wireless/ath/ath5k/base.h +@@ -207,6 +207,10 @@ struct ath5k_softc { + + enum ath5k_int imask; /* interrupt mask copy */ + ++ spinlock_t irqlock; ++ bool rx_pending; /* rx tasklet pending */ ++ bool tx_pending; /* tx tasklet pending */ ++ + u8 lladdr[ETH_ALEN]; + u8 bssidmask[ETH_ALEN]; + |