Return-path: Received: from mail.atheros.com ([12.36.123.2]:52544 "EHLO mail.atheros.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751288AbYHKIoX (ORCPT ); Mon, 11 Aug 2008 04:44:23 -0400 Received: from mail.atheros.com ([10.10.20.105]) by sidewinder.atheros.com for ; Mon, 11 Aug 2008 01:44:23 -0700 From: Sujith MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-ID: <18591.63797.263181.681201@localhost.localdomain> (sfid-20080811_104426_223425_FA382FE6) Date: Mon, 11 Aug 2008 14:02:53 +0530 To: CC: , , , Subject: [PATCH 01/10] ath9k: Merge reset functions Sender: linux-wireless-owner@vger.kernel.org List-ID: Signed-off-by: Sujith Manoharan --- drivers/net/wireless/ath9k/beacon.c | 2 +- drivers/net/wireless/ath9k/core.c | 73 +++++++++++------------------------ drivers/net/wireless/ath9k/core.h | 3 +- drivers/net/wireless/ath9k/recv.c | 2 +- drivers/net/wireless/ath9k/xmit.c | 2 +- 5 files changed, 27 insertions(+), 55 deletions(-) diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c index caf5694..67a8046 100644 --- a/drivers/net/wireless/ath9k/beacon.c +++ b/drivers/net/wireless/ath9k/beacon.c @@ -719,7 +719,7 @@ void ath_bstuck_process(struct ath_softc *sc) DPRINTF(sc, ATH_DBG_BEACON, "%s: stuck beacon; resetting (bmiss count %u)\n", __func__, sc->sc_bmisscount); - ath_internal_reset(sc); + ath_reset(sc, false); } /* diff --git a/drivers/net/wireless/ath9k/core.c b/drivers/net/wireless/ath9k/core.c index f6c4528..10f2729 100644 --- a/drivers/net/wireless/ath9k/core.c +++ b/drivers/net/wireless/ath9k/core.c @@ -828,29 +828,30 @@ done: return error; } -/* - * Reset the hardware w/o losing operational state. This is - * basically a more efficient way of doing ath_stop, ath_init, - * followed by state transitions to the current 802.11 - * operational state. Used to recover from errors rx overrun - * and to reset the hardware when rf gain settings must be reset. - */ - -static int ath_reset_start(struct ath_softc *sc, u32 flag) +int ath_reset(struct ath_softc *sc, bool retry_tx) { struct ath_hal *ah = sc->sc_ah; + int status; + int error = 0; + enum ath9k_ht_macmode ht_macmode = ath_cwm_macmode(sc); ath9k_hw_set_interrupts(ah, 0); /* disable interrupts */ - ath_draintxq(sc, flag & RESET_RETRY_TXQ); /* stop xmit side */ - ath_stoprecv(sc); /* stop recv side */ - ath_flushrecv(sc); /* flush recv queue */ - - return 0; -} + ath_draintxq(sc, retry_tx); /* stop xmit */ + ath_stoprecv(sc); /* stop recv */ + ath_flushrecv(sc); /* flush recv queue */ -static int ath_reset_end(struct ath_softc *sc, u32 flag) -{ - struct ath_hal *ah = sc->sc_ah; + /* Reset chip */ + spin_lock_bh(&sc->sc_resetlock); + if (!ath9k_hw_reset(ah, sc->sc_opmode, &sc->sc_curchan, + ht_macmode, + sc->sc_tx_chainmask, sc->sc_rx_chainmask, + sc->sc_ht_extprotspacing, false, &status)) { + DPRINTF(sc, ATH_DBG_FATAL, + "%s: unable to reset hardware; hal status %u\n", + __func__, status); + error = -EIO; + } + spin_unlock_bh(&sc->sc_resetlock); if (ath_startrecv(sc) != 0) /* restart recv */ DPRINTF(sc, ATH_DBG_FATAL, @@ -863,14 +864,15 @@ static int ath_reset_end(struct ath_softc *sc, u32 flag) */ ath_setcurmode(sc, ath_chan2mode(&sc->sc_curchan)); - ath_update_txpow(sc); /* update tx power state */ + ath_update_txpow(sc); if (sc->sc_beacons) ath_beacon_config(sc, ATH_IF_ID_ANY); /* restart beacons */ + ath9k_hw_set_interrupts(ah, sc->sc_imask); /* Restart the txq */ - if (flag & RESET_RETRY_TXQ) { + if (retry_tx) { int i; for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { if (ATH_TXQ_SETUP(sc, i)) { @@ -880,28 +882,6 @@ static int ath_reset_end(struct ath_softc *sc, u32 flag) } } } - return 0; -} - -int ath_reset(struct ath_softc *sc) -{ - struct ath_hal *ah = sc->sc_ah; - int status; - int error = 0; - enum ath9k_ht_macmode ht_macmode = ath_cwm_macmode(sc); - - /* NB: indicate channel change so we do a full reset */ - spin_lock_bh(&sc->sc_resetlock); - if (!ath9k_hw_reset(ah, sc->sc_opmode, &sc->sc_curchan, - ht_macmode, - sc->sc_tx_chainmask, sc->sc_rx_chainmask, - sc->sc_ht_extprotspacing, false, &status)) { - DPRINTF(sc, ATH_DBG_FATAL, - "%s: unable to reset hardware; hal status %u\n", - __func__, status); - error = -EIO; - } - spin_unlock_bh(&sc->sc_resetlock); return error; } @@ -1050,7 +1030,7 @@ static void ath9k_tasklet(unsigned long data) if (status & ATH9K_INT_FATAL) { /* need a chip reset */ - ath_internal_reset(sc); + ath_reset(sc, false); return; } else { @@ -1815,13 +1795,6 @@ void ath_descdma_cleanup(struct ath_softc *sc, /* Utilities */ /*************/ -void ath_internal_reset(struct ath_softc *sc) -{ - ath_reset_start(sc, 0); - ath_reset(sc); - ath_reset_end(sc, 0); -} - int ath_get_hal_qnum(u16 queue, struct ath_softc *sc) { int qnum; diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h index 673b3d8..ef8f637 100644 --- a/drivers/net/wireless/ath9k/core.h +++ b/drivers/net/wireless/ath9k/core.h @@ -1030,7 +1030,7 @@ void ath_deinit(struct ath_softc *sc); int ath_open(struct ath_softc *sc, struct ath9k_channel *initial_chan); int ath_suspend(struct ath_softc *sc); irqreturn_t ath_isr(int irq, void *dev); -int ath_reset(struct ath_softc *sc); +int ath_reset(struct ath_softc *sc, bool retry_tx); void ath_scan_start(struct ath_softc *sc); void ath_scan_end(struct ath_softc *sc); int ath_set_channel(struct ath_softc *sc, struct ath9k_channel *hchan); @@ -1056,7 +1056,6 @@ int ath_cabq_update(struct ath_softc *); void ath_get_currentCountry(struct ath_softc *sc, struct ath9k_country_entry *ctry); u64 ath_extend_tsf(struct ath_softc *sc, u32 rstamp); -void ath_internal_reset(struct ath_softc *sc); u32 ath_chan2flags(struct ieee80211_channel *chan, struct ath_softc *sc); dma_addr_t ath_skb_map_single(struct ath_softc *sc, struct sk_buff *skb, diff --git a/drivers/net/wireless/ath9k/recv.c b/drivers/net/wireless/ath9k/recv.c index 2fe8061..838b656 100644 --- a/drivers/net/wireless/ath9k/recv.c +++ b/drivers/net/wireless/ath9k/recv.c @@ -1089,7 +1089,7 @@ rx_next: "%s: Reset rx chain mask. " "Do internal reset\n", __func__); ASSERT(flush == 0); - ath_internal_reset(sc); + ath_reset(sc, false); } return 0; diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 157f830..93064cc 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -1242,7 +1242,7 @@ static void ath_tx_complete_aggr_rifs(struct ath_softc *sc, } if (needreset) - ath_internal_reset(sc); + ath_reset(sc, false); return; } -- 1.5.6.5