33d51facad
This patch increases the number of beacons to be missed before generating SYNC TIMEOUT event. It increases the beacon timeout period to 500 microseconds, which gives enough time for the firmware to receive probe response or beacon. Also handled the regain event from firmware once it receives a probe response or beacon. Signed-off-by: Vidhya Govindan <vidhya.govindan@nokia.com> Reviewed-by: Janne Ylalehto <janne.ylalehto@nokia.com> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/*
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* This file is part of wl1251
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*
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* Copyright (c) 1998-2007 Texas Instruments Incorporated
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* Copyright (C) 2008 Nokia Corporation
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*
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* Contact: Kalle Valo <kalle.valo@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include "wl1251.h"
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#include "wl1251_reg.h"
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#include "wl1251_io.h"
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#include "wl1251_event.h"
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#include "wl1251_ps.h"
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static int wl1251_event_scan_complete(struct wl1251 *wl,
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struct event_mailbox *mbox)
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{
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wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d",
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mbox->scheduled_scan_status,
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mbox->scheduled_scan_channels);
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if (wl->scanning) {
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mutex_unlock(&wl->mutex);
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ieee80211_scan_completed(wl->hw, false);
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mutex_lock(&wl->mutex);
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wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed");
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wl->scanning = false;
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}
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return 0;
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}
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static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
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{
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wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
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wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
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wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
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}
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static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
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{
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int ret;
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u32 vector;
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wl1251_event_mbox_dump(mbox);
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vector = mbox->events_vector & ~(mbox->events_mask);
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wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector);
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if (vector & SCAN_COMPLETE_EVENT_ID) {
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ret = wl1251_event_scan_complete(wl, mbox);
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if (ret < 0)
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return ret;
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}
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if (vector & BSS_LOSE_EVENT_ID) {
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wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
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if (wl->psm_requested && wl->psm) {
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ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
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if (ret < 0)
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return ret;
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}
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}
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if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) {
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wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
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/* indicate to the stack, that beacons have been lost */
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ieee80211_beacon_loss(wl->vif);
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}
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if (vector & REGAINED_BSS_EVENT_ID) {
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if (wl->psm_requested) {
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ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
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if (ret < 0)
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return ret;
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}
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}
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return 0;
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}
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int wl1251_event_unmask(struct wl1251 *wl)
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{
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int ret;
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ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask));
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if (ret < 0)
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return ret;
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return 0;
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}
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void wl1251_event_mbox_config(struct wl1251 *wl)
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{
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wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
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wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
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wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
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wl->mbox_ptr[0], wl->mbox_ptr[1]);
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}
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int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num)
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{
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struct event_mailbox mbox;
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int ret;
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wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
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if (mbox_num > 1)
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return -EINVAL;
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/* first we read the mbox descriptor */
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wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
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sizeof(struct event_mailbox));
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/* process the descriptor */
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ret = wl1251_event_process(wl, &mbox);
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if (ret < 0)
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return ret;
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/* then we let the firmware know it can go on...*/
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wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
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return 0;
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}
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