2 * This file is part of wl1251
4 * Copyright (c) 1998-2007 Texas Instruments Incorporated
5 * Copyright (C) 2008 Nokia Corporation
7 * Contact: Kalle Valo <kalle.valo@nokia.com>
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
26 #include "wl1251_reg.h"
27 #include "wl1251_io.h"
28 #include "wl1251_event.h"
29 #include "wl1251_ps.h"
31 static int wl1251_event_scan_complete(struct wl1251 *wl,
32 struct event_mailbox *mbox)
34 wl1251_debug(DEBUG_EVENT, "status: 0x%x, channels: %d",
35 mbox->scheduled_scan_status,
36 mbox->scheduled_scan_channels);
39 mutex_unlock(&wl->mutex);
40 ieee80211_scan_completed(wl->hw, false);
41 mutex_lock(&wl->mutex);
42 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan completed");
49 static void wl1251_event_mbox_dump(struct event_mailbox *mbox)
51 wl1251_debug(DEBUG_EVENT, "MBOX DUMP:");
52 wl1251_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
53 wl1251_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
56 static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
61 wl1251_event_mbox_dump(mbox);
63 vector = mbox->events_vector & ~(mbox->events_mask);
64 wl1251_debug(DEBUG_EVENT, "vector: 0x%x", vector);
66 if (vector & SCAN_COMPLETE_EVENT_ID) {
67 ret = wl1251_event_scan_complete(wl, mbox);
72 if (vector & BSS_LOSE_EVENT_ID) {
73 wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
75 if (wl->psm_requested && wl->psm) {
76 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
82 if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID) {
83 wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
84 /* need to unlock mutex to avoid deadlocking with rtnl */
85 mutex_unlock(&wl->mutex);
87 /* indicate to the stack, that beacons have been lost */
88 ieee80211_beacon_loss(wl->vif);
89 mutex_lock(&wl->mutex);
92 if (vector & REGAINED_BSS_EVENT_ID) {
93 if (wl->psm_requested) {
94 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
100 /* log rare events to help debugging some issues */
101 if (vector & ~(SCAN_COMPLETE_EVENT_ID | PS_REPORT_EVENT_ID |
102 SYNCHRONIZATION_TIMEOUT_EVENT_ID | JOIN_EVENT_COMPLETE_ID |
103 BSS_LOSE_EVENT_ID | RESET_BSS_EVENT_ID |
104 BT_PTA_PREDICTION_EVENT_ID))
105 wl1251_info("rare event: %08x", vector);
111 * Poll the mailbox event field until any of the bits in the mask is set or a
112 * timeout occurs (WL1251_EVENT_TIMEOUT in msecs)
114 int wl1251_event_wait(struct wl1251 *wl, u32 mask, int timeout_ms)
116 u32 events_vector, event;
117 unsigned long timeout;
119 timeout = jiffies + msecs_to_jiffies(timeout_ms);
122 if (time_after(jiffies, timeout))
127 /* read from both event fields */
128 wl1251_mem_read(wl, wl->mbox_ptr[0], &events_vector,
129 sizeof(events_vector));
130 event = events_vector & mask;
131 wl1251_mem_read(wl, wl->mbox_ptr[1], &events_vector,
132 sizeof(events_vector));
133 event |= events_vector & mask;
139 int wl1251_event_unmask(struct wl1251 *wl)
143 ret = wl1251_acx_event_mbox_mask(wl, ~(wl->event_mask));
150 void wl1251_event_mbox_config(struct wl1251 *wl)
152 wl->mbox_ptr[0] = wl1251_reg_read32(wl, REG_EVENT_MAILBOX_PTR);
153 wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
155 wl1251_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
156 wl->mbox_ptr[0], wl->mbox_ptr[1]);
159 int wl1251_event_handle(struct wl1251 *wl, u8 mbox_num)
161 struct event_mailbox mbox;
164 wl1251_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
169 /* first we read the mbox descriptor */
170 wl1251_mem_read(wl, wl->mbox_ptr[mbox_num], &mbox,
171 sizeof(struct event_mailbox));
173 /* process the descriptor */
174 ret = wl1251_event_process(wl, &mbox);
178 /* then we let the firmware know it can go on...*/
179 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);