diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/event.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/event.c | 413 |
1 files changed, 0 insertions, 413 deletions
diff --git a/drivers/net/wireless/wl12xx/event.c b/drivers/net/wireless/wl12xx/event.c deleted file mode 100644 index 674ad2a9e40..00000000000 --- a/drivers/net/wireless/wl12xx/event.c +++ /dev/null @@ -1,413 +0,0 @@ -/* - * This file is part of wl1271 - * - * Copyright (C) 2008-2009 Nokia Corporation - * - * Contact: Luciano Coelho <luciano.coelho@nokia.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - * - */ - -#include "wl12xx.h" -#include "reg.h" -#include "io.h" -#include "event.h" -#include "ps.h" -#include "scan.h" -#include "wl12xx_80211.h" - -void wl1271_pspoll_work(struct work_struct *work) -{ - struct delayed_work *dwork; - struct wl1271 *wl; - int ret; - - dwork = container_of(work, struct delayed_work, work); - wl = container_of(dwork, struct wl1271, pspoll_work); - - wl1271_debug(DEBUG_EVENT, "pspoll work"); - - mutex_lock(&wl->mutex); - - if (unlikely(wl->state == WL1271_STATE_OFF)) - goto out; - - if (!test_and_clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags)) - goto out; - - if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags)) - goto out; - - /* - * if we end up here, then we were in powersave when the pspoll - * delivery failure occurred, and no-one changed state since, so - * we should go back to powersave. - */ - ret = wl1271_ps_elp_wakeup(wl); - if (ret < 0) - goto out; - - wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE, wl->basic_rate, true); - - wl1271_ps_elp_sleep(wl); -out: - mutex_unlock(&wl->mutex); -}; - -static void wl1271_event_pspoll_delivery_fail(struct wl1271 *wl) -{ - int delay = wl->conf.conn.ps_poll_recovery_period; - int ret; - - wl->ps_poll_failures++; - if (wl->ps_poll_failures == 1) - wl1271_info("AP with dysfunctional ps-poll, " - "trying to work around it."); - - /* force active mode receive data from the AP */ - if (test_bit(WL1271_FLAG_PSM, &wl->flags)) { - ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE, - wl->basic_rate, true); - if (ret < 0) - return; - set_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags); - ieee80211_queue_delayed_work(wl->hw, &wl->pspoll_work, - msecs_to_jiffies(delay)); - } - - /* - * If already in active mode, lets we should be getting data from - * the AP right away. If we enter PSM too fast after this, and data - * remains on the AP, we will get another event like this, and we'll - * go into active once more. - */ -} - -static int wl1271_event_ps_report(struct wl1271 *wl, - struct event_mailbox *mbox, - bool *beacon_loss) -{ - int ret = 0; - u32 total_retries = wl->conf.conn.psm_entry_retries; - - wl1271_debug(DEBUG_EVENT, "ps_status: 0x%x", mbox->ps_status); - - switch (mbox->ps_status) { - case EVENT_ENTER_POWER_SAVE_FAIL: - wl1271_debug(DEBUG_PSM, "PSM entry failed"); - - if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) { - /* remain in active mode */ - wl->psm_entry_retry = 0; - break; - } - - if (wl->psm_entry_retry < total_retries) { - wl->psm_entry_retry++; - ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE, - wl->basic_rate, true); - } else { - wl1271_info("No ack to nullfunc from AP."); - wl->psm_entry_retry = 0; - *beacon_loss = true; - } - break; - case EVENT_ENTER_POWER_SAVE_SUCCESS: - wl->psm_entry_retry = 0; - - /* enable beacon filtering */ - ret = wl1271_acx_beacon_filter_opt(wl, true); - if (ret < 0) - break; - - /* - * BET has only a minor effect in 5GHz and masks - * channel switch IEs, so we only enable BET on 2.4GHz - */ - if (wl->band == IEEE80211_BAND_2GHZ) - /* enable beacon early termination */ - ret = wl1271_acx_bet_enable(wl, true); - - if (wl->ps_compl) { - complete(wl->ps_compl); - wl->ps_compl = NULL; - } - break; - default: - break; - } - - return ret; -} - -static void wl1271_event_rssi_trigger(struct wl1271 *wl, - struct event_mailbox *mbox) -{ - enum nl80211_cqm_rssi_threshold_event event; - s8 metric = mbox->rssi_snr_trigger_metric[0]; - - wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric); - - if (metric <= wl->rssi_thold) - event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW; - else - event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH; - - if (event != wl->last_rssi_event) - ieee80211_cqm_rssi_notify(wl->vif, event, GFP_KERNEL); - wl->last_rssi_event = event; -} - -static void wl1271_stop_ba_event(struct wl1271 *wl) -{ - if (wl->bss_type != BSS_TYPE_AP_BSS) { - if (!wl->ba_rx_bitmap) - return; - ieee80211_stop_rx_ba_session(wl->vif, wl->ba_rx_bitmap, - wl->bssid); - } else { - int i; - struct wl1271_link *lnk; - for (i = WL1271_AP_STA_HLID_START; i < AP_MAX_LINKS; i++) { - lnk = &wl->links[i]; - if (!wl1271_is_active_sta(wl, i) || !lnk->ba_bitmap) - continue; - - ieee80211_stop_rx_ba_session(wl->vif, - lnk->ba_bitmap, - lnk->addr); - } - } -} - -static void wl12xx_event_soft_gemini_sense(struct wl1271 *wl, - u8 enable) -{ - if (enable) { - /* disable dynamic PS when requested by the firmware */ - ieee80211_disable_dyn_ps(wl->vif); - set_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags); - } else { - ieee80211_enable_dyn_ps(wl->vif); - clear_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags); - wl1271_recalc_rx_streaming(wl); - } - -} - -static void wl1271_event_mbox_dump(struct event_mailbox *mbox) -{ - wl1271_debug(DEBUG_EVENT, "MBOX DUMP:"); - wl1271_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector); - wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask); -} - -static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox) -{ - int ret; - u32 vector; - bool beacon_loss = false; - bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS); - bool disconnect_sta = false; - unsigned long sta_bitmap = 0; - - wl1271_event_mbox_dump(mbox); - - vector = le32_to_cpu(mbox->events_vector); - vector &= ~(le32_to_cpu(mbox->events_mask)); - wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector); - - if (vector & SCAN_COMPLETE_EVENT_ID) { - wl1271_debug(DEBUG_EVENT, "status: 0x%x", - mbox->scheduled_scan_status); - - wl1271_scan_stm(wl); - } - - if (vector & PERIODIC_SCAN_REPORT_EVENT_ID) { - wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_REPORT_EVENT " - "(status 0x%0x)", mbox->scheduled_scan_status); - - wl1271_scan_sched_scan_results(wl); - } - - if (vector & PERIODIC_SCAN_COMPLETE_EVENT_ID) { - wl1271_debug(DEBUG_EVENT, "PERIODIC_SCAN_COMPLETE_EVENT " - "(status 0x%0x)", mbox->scheduled_scan_status); - if (wl->sched_scanning) { - wl1271_scan_sched_scan_stop(wl); - ieee80211_sched_scan_stopped(wl->hw); - } - } - - if (vector & SOFT_GEMINI_SENSE_EVENT_ID && - wl->bss_type == BSS_TYPE_STA_BSS) - wl12xx_event_soft_gemini_sense(wl, - mbox->soft_gemini_sense_info); - - /* - * The BSS_LOSE_EVENT_ID is only needed while psm (and hence beacon - * filtering) is enabled. Without PSM, the stack will receive all - * beacons and can detect beacon loss by itself. - * - * As there's possibility that the driver disables PSM before receiving - * BSS_LOSE_EVENT, beacon loss has to be reported to the stack. - * - */ - if ((vector & BSS_LOSE_EVENT_ID) && !is_ap) { - wl1271_info("Beacon loss detected."); - - /* indicate to the stack, that beacons have been lost */ - beacon_loss = true; - } - - if ((vector & PS_REPORT_EVENT_ID) && !is_ap) { - wl1271_debug(DEBUG_EVENT, "PS_REPORT_EVENT"); - ret = wl1271_event_ps_report(wl, mbox, &beacon_loss); - if (ret < 0) - return ret; - } - - if ((vector & PSPOLL_DELIVERY_FAILURE_EVENT_ID) && !is_ap) - wl1271_event_pspoll_delivery_fail(wl); - - if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID) { - wl1271_debug(DEBUG_EVENT, "RSSI_SNR_TRIGGER_0_EVENT"); - if (wl->vif) - wl1271_event_rssi_trigger(wl, mbox); - } - - if ((vector & BA_SESSION_RX_CONSTRAINT_EVENT_ID)) { - wl1271_debug(DEBUG_EVENT, "BA_SESSION_RX_CONSTRAINT_EVENT_ID. " - "ba_allowed = 0x%x", mbox->rx_ba_allowed); - - wl->ba_allowed = !!mbox->rx_ba_allowed; - - if (wl->vif && !wl->ba_allowed) - wl1271_stop_ba_event(wl); - } - - if ((vector & CHANNEL_SWITCH_COMPLETE_EVENT_ID) && !is_ap) { - wl1271_debug(DEBUG_EVENT, "CHANNEL_SWITCH_COMPLETE_EVENT_ID. " - "status = 0x%x", - mbox->channel_switch_status); - /* - * That event uses for two cases: - * 1) channel switch complete with status=0 - * 2) channel switch failed status=1 - */ - if (test_and_clear_bit(WL1271_FLAG_CS_PROGRESS, &wl->flags) && - (wl->vif)) - ieee80211_chswitch_done(wl->vif, - mbox->channel_switch_status ? false : true); - } - - if ((vector & DUMMY_PACKET_EVENT_ID)) { - wl1271_debug(DEBUG_EVENT, "DUMMY_PACKET_ID_EVENT_ID"); - if (wl->vif) - wl1271_tx_dummy_packet(wl); - } - - /* - * "TX retries exceeded" has a different meaning according to mode. - * In AP mode the offending station is disconnected. - */ - if ((vector & MAX_TX_RETRY_EVENT_ID) && is_ap) { - wl1271_debug(DEBUG_EVENT, "MAX_TX_RETRY_EVENT_ID"); - sta_bitmap |= le16_to_cpu(mbox->sta_tx_retry_exceeded); - disconnect_sta = true; - } - - if ((vector & INACTIVE_STA_EVENT_ID) && is_ap) { - wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID"); - sta_bitmap |= le16_to_cpu(mbox->sta_aging_status); - disconnect_sta = true; - } - - if (is_ap && disconnect_sta) { - u32 num_packets = wl->conf.tx.max_tx_retries; - struct ieee80211_sta *sta; - const u8 *addr; - int h; - - for (h = find_first_bit(&sta_bitmap, AP_MAX_LINKS); - h < AP_MAX_LINKS; - h = find_next_bit(&sta_bitmap, AP_MAX_LINKS, h+1)) { - if (!wl1271_is_active_sta(wl, h)) - continue; - - addr = wl->links[h].addr; - - rcu_read_lock(); - sta = ieee80211_find_sta(wl->vif, addr); - if (sta) { - wl1271_debug(DEBUG_EVENT, "remove sta %d", h); - ieee80211_report_low_ack(sta, num_packets); - } - rcu_read_unlock(); - } - } - - if (wl->vif && beacon_loss) - ieee80211_connection_loss(wl->vif); - - return 0; -} - -int wl1271_event_unmask(struct wl1271 *wl) -{ - int ret; - - ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask)); - if (ret < 0) - return ret; - - return 0; -} - -void wl1271_event_mbox_config(struct wl1271 *wl) -{ - wl->mbox_ptr[0] = wl1271_read32(wl, REG_EVENT_MAILBOX_PTR); - wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox); - - wl1271_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x", - wl->mbox_ptr[0], wl->mbox_ptr[1]); -} - -int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num) -{ - struct event_mailbox mbox; - int ret; - - wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num); - - if (mbox_num > 1) - return -EINVAL; - - /* first we read the mbox descriptor */ - wl1271_read(wl, wl->mbox_ptr[mbox_num], &mbox, - sizeof(struct event_mailbox), false); - - /* process the descriptor */ - ret = wl1271_event_process(wl, &mbox); - if (ret < 0) - return ret; - - /* then we let the firmware know it can go on...*/ - wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK); - - return 0; -} |