diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ath9k.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/gpio.c | 7 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.h | 11 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/init.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/main.c | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/mci.c | 254 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/mci.h | 118 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 5 |
10 files changed, 402 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/ath9k/Makefile b/drivers/net/wireless/ath/ath9k/Makefile index 36ed3c46fec..49d3f25f509 100644 --- a/drivers/net/wireless/ath/ath9k/Makefile +++ b/drivers/net/wireless/ath/ath9k/Makefile @@ -4,6 +4,7 @@ ath9k-y += beacon.o \ main.o \ recv.o \ xmit.o \ + mci.o \ ath9k-$(CONFIG_ATH9K_RATE_CONTROL) += rc.o ath9k-$(CONFIG_ATH9K_PCI) += pci.o diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 1c269f50822..4415e89bd3d 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -25,6 +25,7 @@ #include "debug.h" #include "common.h" +#include "mci.h" /* * Header for the ath9k.ko driver core *only* -- hw code nor any other driver @@ -443,7 +444,9 @@ struct ath_btcoex { u32 btcoex_no_stomp; /* in usec */ u32 btcoex_period; /* in usec */ u32 btscan_no_stomp; /* in usec */ + u32 duty_cycle; struct ath_gen_timer *no_stomp_timer; /* Timer for no BT stomping */ + struct ath_mci_profile mci; }; int ath_init_btcoex_timer(struct ath_softc *sc); diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c index 655576c8fda..2c279dcaf4b 100644 --- a/drivers/net/wireless/ath/ath9k/gpio.c +++ b/drivers/net/wireless/ath/ath9k/gpio.c @@ -189,8 +189,8 @@ static void ath_btcoex_period_timer(unsigned long data) bool is_btscan; ath9k_ps_wakeup(sc); - ath_detect_bt_priority(sc); - + if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) + ath_detect_bt_priority(sc); is_btscan = sc->sc_flags & SC_OP_BT_SCAN; spin_lock_bh(&btcoex->btcoex_lock); @@ -212,8 +212,9 @@ static void ath_btcoex_period_timer(unsigned long data) } ath9k_ps_restore(sc); + timer_period = btcoex->btcoex_period / 1000; mod_timer(&btcoex->period_timer, jiffies + - msecs_to_jiffies(ATH_BTCOEX_DEF_BT_PERIOD)); + msecs_to_jiffies(timer_period)); } /* diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index e1dc084eac5..96b8b9914da 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -2331,7 +2331,7 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah) ah->enabled_cals |= TX_IQ_ON_AGC_CAL; } if (AR_SREV_9462(ah)) - pCap->hw_caps |= ATH9K_HW_CAP_RTT; + pCap->hw_caps |= ATH9K_HW_CAP_RTT | ATH9K_HW_CAP_MCI; return 0; } diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h index f389b3c93cf..33e8f2f9d42 100644 --- a/drivers/net/wireless/ath/ath9k/hw.h +++ b/drivers/net/wireless/ath/ath9k/hw.h @@ -203,6 +203,7 @@ enum ath9k_hw_caps { ATH9K_HW_CAP_5GHZ = BIT(14), ATH9K_HW_CAP_APM = BIT(15), ATH9K_HW_CAP_RTT = BIT(16), + ATH9K_HW_CAP_MCI = BIT(17), }; struct ath9k_hw_capabilities { @@ -419,6 +420,16 @@ enum ath9k_rx_qtype { ATH9K_RX_QUEUE_MAX, }; +enum ath_mci_gpm_coex_profile_type { + MCI_GPM_COEX_PROFILE_UNKNOWN, + MCI_GPM_COEX_PROFILE_RFCOMM, + MCI_GPM_COEX_PROFILE_A2DP, + MCI_GPM_COEX_PROFILE_HID, + MCI_GPM_COEX_PROFILE_BNEP, + MCI_GPM_COEX_PROFILE_VOICE, + MCI_GPM_COEX_PROFILE_MAX +}; + struct ath9k_beacon_state { u32 bs_nexttbtt; u32 bs_nextdtim; diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index af1b3254953..e8af5821a96 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -423,6 +423,8 @@ static int ath9k_init_btcoex(struct ath_softc *sc) txq = sc->tx.txq_map[WME_AC_BE]; ath9k_hw_init_btcoex_hw(sc->sc_ah, txq->axq_qnum); sc->btcoex.bt_stomp_type = ATH_BTCOEX_STOMP_LOW; + sc->btcoex.duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE; + INIT_LIST_HEAD(&sc->btcoex.mci.info); break; default: WARN_ON(1); diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 93fbe6f4089..e1e006d81f7 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1133,8 +1133,9 @@ static int ath9k_start(struct ieee80211_hw *hw) if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) && !ah->btcoex_hw.enabled) { - ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, - AR_STOMP_LOW_WLAN_WGHT); + if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) + ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT, + AR_STOMP_LOW_WLAN_WGHT); ath9k_hw_btcoex_enable(ah); if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) @@ -1237,6 +1238,7 @@ static void ath9k_stop(struct ieee80211_hw *hw) ath9k_hw_btcoex_disable(ah); if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) ath9k_btcoex_timer_pause(sc); + ath_mci_flush_profile(&sc->btcoex.mci); } spin_lock_bh(&sc->sc_pcu_lock); diff --git a/drivers/net/wireless/ath/ath9k/mci.c b/drivers/net/wireless/ath/ath9k/mci.c new file mode 100644 index 00000000000..0fbb141bc30 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/mci.c @@ -0,0 +1,254 @@ +/* + * Copyright (c) 2010-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "ath9k.h" +#include "mci.h" + +u8 ath_mci_duty_cycle[] = { 0, 50, 60, 70, 80, 85, 90, 95, 98 }; + +static struct ath_mci_profile_info* +ath_mci_find_profile(struct ath_mci_profile *mci, + struct ath_mci_profile_info *info) +{ + struct ath_mci_profile_info *entry; + + list_for_each_entry(entry, &mci->info, list) { + if (entry->conn_handle == info->conn_handle) + break; + } + return entry; +} + +static bool ath_mci_add_profile(struct ath_common *common, + struct ath_mci_profile *mci, + struct ath_mci_profile_info *info) +{ + struct ath_mci_profile_info *entry; + + if ((mci->num_sco == ATH_MCI_MAX_SCO_PROFILE) && + (info->type == MCI_GPM_COEX_PROFILE_VOICE)) { + ath_dbg(common, ATH_DBG_MCI, + "Too many SCO profile, failed to add new profile\n"); + return false; + } + + if (((NUM_PROF(mci) - mci->num_sco) == ATH_MCI_MAX_ACL_PROFILE) && + (info->type != MCI_GPM_COEX_PROFILE_VOICE)) { + ath_dbg(common, ATH_DBG_MCI, + "Too many ACL profile, failed to add new profile\n"); + return false; + } + + entry = ath_mci_find_profile(mci, info); + + if (entry) + memcpy(entry, info, 10); + else { + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + return false; + + memcpy(entry, info, 10); + INC_PROF(mci, info); + list_add_tail(&info->list, &mci->info); + } + return true; +} + +static void ath_mci_del_profile(struct ath_common *common, + struct ath_mci_profile *mci, + struct ath_mci_profile_info *info) +{ + struct ath_mci_profile_info *entry; + + entry = ath_mci_find_profile(mci, info); + + if (!entry) { + ath_dbg(common, ATH_DBG_MCI, + "Profile to be deleted not found\n"); + return; + } + DEC_PROF(mci, entry); + list_del(&entry->list); + kfree(entry); +} + +void ath_mci_flush_profile(struct ath_mci_profile *mci) +{ + struct ath_mci_profile_info *info, *tinfo; + + list_for_each_entry_safe(info, tinfo, &mci->info, list) { + list_del(&info->list); + DEC_PROF(mci, info); + kfree(info); + } + mci->aggr_limit = 0; +} + +static void ath_mci_adjust_aggr_limit(struct ath_btcoex *btcoex) +{ + struct ath_mci_profile *mci = &btcoex->mci; + u32 wlan_airtime = btcoex->btcoex_period * + (100 - btcoex->duty_cycle) / 100; + + /* + * Scale: wlan_airtime is in ms, aggr_limit is in 0.25 ms. + * When wlan_airtime is less than 4ms, aggregation limit has to be + * adjusted half of wlan_airtime to ensure that the aggregation can fit + * without collision with BT traffic. + */ + if ((wlan_airtime <= 4) && + (!mci->aggr_limit || (mci->aggr_limit > (2 * wlan_airtime)))) + mci->aggr_limit = 2 * wlan_airtime; +} + +static void ath_mci_update_scheme(struct ath_softc *sc) +{ + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_btcoex *btcoex = &sc->btcoex; + struct ath_mci_profile *mci = &btcoex->mci; + struct ath_mci_profile_info *info; + u32 num_profile = NUM_PROF(mci); + + if (num_profile == 1) { + info = list_first_entry(&mci->info, + struct ath_mci_profile_info, + list); + if (mci->num_sco && info->T == 12) { + mci->aggr_limit = 8; + ath_dbg(common, ATH_DBG_MCI, + "Single SCO, aggregation limit 2 ms\n"); + } else if ((info->type == MCI_GPM_COEX_PROFILE_BNEP) && + !info->master) { + btcoex->btcoex_period = 60; + ath_dbg(common, ATH_DBG_MCI, + "Single slave PAN/FTP, bt period 60 ms\n"); + } else if ((info->type == MCI_GPM_COEX_PROFILE_HID) && + (info->T > 0 && info->T < 50) && + (info->A > 1 || info->W > 1)) { + btcoex->duty_cycle = 30; + mci->aggr_limit = 8; + ath_dbg(common, ATH_DBG_MCI, + "Multiple attempt/timeout single HID " + "aggregation limit 2 ms dutycycle 30%%\n"); + } + } else if ((num_profile == 2) && (mci->num_hid == 2)) { + btcoex->duty_cycle = 30; + mci->aggr_limit = 8; + ath_dbg(common, ATH_DBG_MCI, + "Two HIDs aggregation limit 2 ms dutycycle 30%%\n"); + } else if (num_profile > 3) { + mci->aggr_limit = 6; + ath_dbg(common, ATH_DBG_MCI, + "Three or more profiles aggregation limit 1.5 ms\n"); + } + + if (IS_CHAN_2GHZ(sc->sc_ah->curchan)) { + if (IS_CHAN_HT(sc->sc_ah->curchan)) + ath_mci_adjust_aggr_limit(btcoex); + else + btcoex->btcoex_period >>= 1; + } + + ath9k_hw_btcoex_disable(sc->sc_ah); + ath9k_btcoex_timer_pause(sc); + + if (IS_CHAN_5GHZ(sc->sc_ah->curchan)) + return; + + btcoex->duty_cycle += (mci->num_bdr ? ATH_MCI_MAX_DUTY_CYCLE : 0); + if (btcoex->duty_cycle > ATH_MCI_MAX_DUTY_CYCLE) + btcoex->duty_cycle = ATH_MCI_MAX_DUTY_CYCLE; + + btcoex->btcoex_period *= 1000; + btcoex->btcoex_no_stomp = btcoex->btcoex_period * + (100 - btcoex->duty_cycle) / 100; + + ath9k_hw_btcoex_enable(sc->sc_ah); + ath9k_btcoex_timer_resume(sc); +} + +void ath_mci_process_profile(struct ath_softc *sc, + struct ath_mci_profile_info *info) +{ + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_btcoex *btcoex = &sc->btcoex; + struct ath_mci_profile *mci = &btcoex->mci; + + if (info->start) { + if (!ath_mci_add_profile(common, mci, info)) + return; + } else + ath_mci_del_profile(common, mci, info); + + btcoex->btcoex_period = ATH_MCI_DEF_BT_PERIOD; + mci->aggr_limit = mci->num_sco ? 6 : 0; + if (NUM_PROF(mci)) { + btcoex->bt_stomp_type = ATH_BTCOEX_STOMP_LOW; + btcoex->duty_cycle = ath_mci_duty_cycle[NUM_PROF(mci)]; + } else { + btcoex->bt_stomp_type = mci->num_mgmt ? ATH_BTCOEX_STOMP_ALL : + ATH_BTCOEX_STOMP_LOW; + btcoex->duty_cycle = ATH_BTCOEX_DEF_DUTY_CYCLE; + } + + ath_mci_update_scheme(sc); +} + +void ath_mci_process_status(struct ath_softc *sc, + struct ath_mci_profile_status *status) +{ + struct ath_common *common = ath9k_hw_common(sc->sc_ah); + struct ath_btcoex *btcoex = &sc->btcoex; + struct ath_mci_profile *mci = &btcoex->mci; + struct ath_mci_profile_info info; + int i = 0, old_num_mgmt = mci->num_mgmt; + + /* Link status type are not handled */ + if (status->is_link) { + ath_dbg(common, ATH_DBG_MCI, + "Skip link type status update\n"); + return; + } + + memset(&info, 0, sizeof(struct ath_mci_profile_info)); + + info.conn_handle = status->conn_handle; + if (ath_mci_find_profile(mci, &info)) { + ath_dbg(common, ATH_DBG_MCI, + "Skip non link state update for existing profile %d\n", + status->conn_handle); + return; + } + if (status->conn_handle >= ATH_MCI_MAX_PROFILE) { + ath_dbg(common, ATH_DBG_MCI, + "Ignore too many non-link update\n"); + return; + } + if (status->is_critical) + __set_bit(status->conn_handle, mci->status); + else + __clear_bit(status->conn_handle, mci->status); + + mci->num_mgmt = 0; + do { + if (test_bit(i, mci->status)) + mci->num_mgmt++; + } while (++i < ATH_MCI_MAX_PROFILE); + + if (old_num_mgmt != mci->num_mgmt) + ath_mci_update_scheme(sc); +} diff --git a/drivers/net/wireless/ath/ath9k/mci.h b/drivers/net/wireless/ath/ath9k/mci.h new file mode 100644 index 00000000000..9590c61822d --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/mci.h @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2010-2011 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef MCI_H +#define MCI_H + +#define ATH_MCI_DEF_BT_PERIOD 40 +#define ATH_MCI_BDR_DUTY_CYCLE 20 +#define ATH_MCI_MAX_DUTY_CYCLE 90 + +#define ATH_MCI_DEF_AGGR_LIMIT 6 /* in 0.24 ms */ +#define ATH_MCI_MAX_ACL_PROFILE 7 +#define ATH_MCI_MAX_SCO_PROFILE 1 +#define ATH_MCI_MAX_PROFILE (ATH_MCI_MAX_ACL_PROFILE +\ + ATH_MCI_MAX_SCO_PROFILE) + +#define INC_PROF(_mci, _info) do { \ + switch (_info->type) { \ + case MCI_GPM_COEX_PROFILE_RFCOMM:\ + _mci->num_other_acl++; \ + break; \ + case MCI_GPM_COEX_PROFILE_A2DP: \ + _mci->num_a2dp++; \ + if (!_info->edr) \ + _mci->num_bdr++; \ + break; \ + case MCI_GPM_COEX_PROFILE_HID: \ + _mci->num_hid++; \ + break; \ + case MCI_GPM_COEX_PROFILE_BNEP: \ + _mci->num_pan++; \ + break; \ + case MCI_GPM_COEX_PROFILE_VOICE: \ + _mci->num_sco++; \ + break; \ + default: \ + break; \ + } \ + } while (0) + +#define DEC_PROF(_mci, _info) do { \ + switch (_info->type) { \ + case MCI_GPM_COEX_PROFILE_RFCOMM:\ + _mci->num_other_acl--; \ + break; \ + case MCI_GPM_COEX_PROFILE_A2DP: \ + _mci->num_a2dp--; \ + if (!_info->edr) \ + _mci->num_bdr--; \ + break; \ + case MCI_GPM_COEX_PROFILE_HID: \ + _mci->num_hid--; \ + break; \ + case MCI_GPM_COEX_PROFILE_BNEP: \ + _mci->num_pan--; \ + break; \ + case MCI_GPM_COEX_PROFILE_VOICE: \ + _mci->num_sco--; \ + break; \ + default: \ + break; \ + } \ + } while (0) + +#define NUM_PROF(_mci) (_mci->num_other_acl + _mci->num_a2dp + \ + _mci->num_hid + _mci->num_pan + _mci->num_sco) + +struct ath_mci_profile_info { + u8 type; + u8 conn_handle; + bool start; + bool master; + bool edr; + u8 voice_type; + u16 T; /* Voice: Tvoice, HID: Tsniff, in slots */ + u8 W; /* Voice: Wvoice, HID: Sniff timeout, in slots */ + u8 A; /* HID: Sniff attempt, in slots */ + struct list_head list; +}; + +struct ath_mci_profile_status { + bool is_critical; + bool is_link; + u8 conn_handle; +}; + +struct ath_mci_profile { + struct list_head info; + DECLARE_BITMAP(status, ATH_MCI_MAX_PROFILE); + u16 aggr_limit; + u8 num_mgmt; + u8 num_sco; + u8 num_a2dp; + u8 num_hid; + u8 num_pan; + u8 num_other_acl; + u8 num_bdr; +}; + +void ath_mci_flush_profile(struct ath_mci_profile *mci); +void ath_mci_process_profile(struct ath_softc *sc, + struct ath_mci_profile_info *info); +void ath_mci_process_status(struct ath_softc *sc, + struct ath_mci_profile_status *status); +#endif diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 03b0a651a59..55d077e7135 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -601,6 +601,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf, struct sk_buff *skb; struct ieee80211_tx_info *tx_info; struct ieee80211_tx_rate *rates; + struct ath_mci_profile *mci = &sc->btcoex.mci; u32 max_4ms_framelen, frmlen; u16 aggr_limit, legacy = 0; int i; @@ -645,7 +646,9 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf, if (tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE || legacy) return 0; - if (sc->sc_flags & SC_OP_BT_PRIORITY_DETECTED) + if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_MCI) && mci->aggr_limit) + aggr_limit = (max_4ms_framelen * mci->aggr_limit) >> 4; + else if (sc->sc_flags & SC_OP_BT_PRIORITY_DETECTED) aggr_limit = min((max_4ms_framelen * 3) / 8, (u32)ATH_AMPDU_LIMIT_MAX); else |