| /* |
| * This file is part of wl1251 |
| * |
| * Copyright (c) 1998-2007 Texas Instruments Incorporated |
| * Copyright (C) 2008 Nokia Corporation |
| * |
| * Contact: Kalle Valo <kalle.valo@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 "wl1251.h" |
| #include "wl1251_reg.h" |
| #include "wl1251_io.h" |
| #include "wl1251_event.h" |
| #include "wl1251_ps.h" |
| |
| static int wl1251_event_scan_complete(struct wl1251 *wl, |
| struct event_mailbox *mbox) |
| { |
| wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d", |
| mbox->scheduled_scan_status, |
| mbox->scheduled_scan_channels); |
| |
| if (wl->scanning) { |
| mutex_unlock(&wl->mutex); |
| ieee80211_scan_completed(wl->hw, false); |
| mutex_lock(&wl->mutex); |
| wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed"); |
| wl->scanning = false; |
| } |
| |
| return 0; |
| } |
| |
| static void wl1251_event_mbox_dump(struct event_mailbox *mbox) |
| { |
| wl1251_debug(DEBUG_EVENT, "MBOX DUMP:"); |
| wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector); |
| wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask); |
| } |
| |
| static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox) |
| { |
| int ret; |
| u32 vector; |
| |
| wl1251_event_mbox_dump(mbox); |
| |
| vector = mbox->events_vector & ~(mbox->events_mask); |
| wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector); |
| |
| if (vector & SCAN_COMPLETE_EVENT_ID) { |
| ret = wl1251_event_scan_complete(wl, mbox); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (vector & BSS_LOSE_EVENT_ID) { |
| wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT"); |
| |
| if (wl->psm_requested && wl->psm) { |
| ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) { |
| wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT"); |
| |
| /* indicate to the stack, that beacons have been lost */ |
| ieee80211_beacon_loss(wl->vif); |
| } |
| |
| if (vector & REGAINED_BSS_EVENT_ID) { |
| if (wl->psm_requested) { |
| ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * Poll the mailbox event field until any of the bits in the mask is set or a |
| * timeout occurs (WL1251_EVENT_TIMEOUT in msecs) |
| */ |
| int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms) |
| { |
| u32 events_vector, event; |
| unsigned long timeout; |
| |
| timeout = jiffies + msecs_to_jiffies(timeout_ms); |
| |
| do { |
| if (time_after(jiffies, timeout)) |
| return -ETIMEDOUT; |
| |
| msleep(1); |
| |
| /* read from both event fields */ |
| wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector, |
| sizeof(events_vector)); |
| event = events_vector & mask; |
| wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector, |
| sizeof(events_vector)); |
| event |= events_vector & mask; |
| } while (!event); |
| |
| return 0; |
| } |
| |
| int wl1251_event_unmask(struct wl1251 *wl) |
| { |
| int ret; |
| |
| ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask)); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| void wl1251_event_mbox_config(struct wl1251 *wl) |
| { |
| wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR); |
| wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox); |
| |
| wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x", |
| wl->mbox_ptr[0], wl->mbox_ptr[1]); |
| } |
| |
| int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num) |
| { |
| struct event_mailbox mbox; |
| int ret; |
| |
| wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num); |
| |
| if (mbox_num > 1) |
| return -EINVAL; |
| |
| /* first we read the mbox descriptor */ |
| wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox, |
| sizeof(struct event_mailbox)); |
| |
| /* process the descriptor */ |
| ret = wl1251_event_process(wl, &mbox); |
| if (ret < 0) |
| return ret; |
| |
| /* then we let the firmware know it can go on...*/ |
| wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK); |
| |
| return 0; |
| } |