2 * This file is part of wl1271
4 * Copyright (C) 2008-2009 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25 #include "wl1271_reg.h"
26 #include "wl1271_spi.h"
27 #include "wl1271_event.h"
28 #include "wl1271_ps.h"
29 #include "wl12xx_80211.h"
31 static int wl1271_event_scan_complete(struct wl1271 *wl,
32 struct event_mailbox *mbox)
34 int size = sizeof(struct wl12xx_probe_req_template);
35 wl1271_debug(DEBUG_EVENT, "status: 0x%x",
36 mbox->scheduled_scan_status);
39 if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {
40 wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
42 /* 2.4 GHz band scanned, scan 5 GHz band, pretend
43 * to the wl1271_cmd_scan function that we are not
44 * scanning as it checks that.
47 wl1271_cmd_scan(wl, wl->scan.ssid, wl->scan.ssid_len,
50 WL1271_SCAN_BAND_5_GHZ,
51 wl->scan.probe_requests);
53 if (wl->scan.state == WL1271_SCAN_BAND_2_4_GHZ)
54 wl1271_cmd_template_set(wl,
55 CMD_TEMPL_CFG_PROBE_REQ_2_4,
58 wl1271_cmd_template_set(wl,
59 CMD_TEMPL_CFG_PROBE_REQ_5,
62 mutex_unlock(&wl->mutex);
63 ieee80211_scan_completed(wl->hw, false);
64 mutex_lock(&wl->mutex);
71 static int wl1271_event_ps_report(struct wl1271 *wl,
72 struct event_mailbox *mbox,
77 wl1271_debug(DEBUG_EVENT, "ps_status: 0x%x", mbox->ps_status);
79 switch (mbox->ps_status) {
80 case EVENT_ENTER_POWER_SAVE_FAIL:
82 wl->psm_entry_retry = 0;
86 if (wl->psm_entry_retry < wl->conf.conn.psm_entry_retries) {
87 wl->psm_entry_retry++;
88 ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
90 wl1271_error("PSM entry failed, giving up.\n");
91 wl->psm_entry_retry = 0;
94 case EVENT_ENTER_POWER_SAVE_SUCCESS:
95 wl->psm_entry_retry = 0;
97 case EVENT_EXIT_POWER_SAVE_FAIL:
98 wl1271_info("PSM exit failed");
100 case EVENT_EXIT_POWER_SAVE_SUCCESS:
108 static void wl1271_event_mbox_dump(struct event_mailbox *mbox)
110 wl1271_debug(DEBUG_EVENT, "MBOX DUMP:");
111 wl1271_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
112 wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
115 static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
119 bool beacon_loss = false;
121 wl1271_event_mbox_dump(mbox);
123 vector = le32_to_cpu(mbox->events_vector);
124 vector &= ~(le32_to_cpu(mbox->events_mask));
125 wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector);
127 if (vector & SCAN_COMPLETE_EVENT_ID) {
128 ret = wl1271_event_scan_complete(wl, mbox);
134 * The BSS_LOSE_EVENT_ID is only needed while psm (and hence beacon
135 * filtering) is enabled. Without PSM, the stack will receive all
136 * beacons and can detect beacon loss by itself.
138 if (vector & BSS_LOSE_EVENT_ID && wl->psm) {
139 wl1271_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
141 /* indicate to the stack, that beacons have been lost */
145 if (vector & PS_REPORT_EVENT_ID) {
146 wl1271_debug(DEBUG_EVENT, "PS_REPORT_EVENT");
147 ret = wl1271_event_ps_report(wl, mbox, &beacon_loss);
153 /* Obviously, it's dangerous to release the mutex while
154 we are holding many of the variables in the wl struct.
155 That's why it's done last in the function, and care must
156 be taken that nothing more is done after this function
158 mutex_unlock(&wl->mutex);
159 ieee80211_beacon_loss(wl->vif);
160 mutex_lock(&wl->mutex);
166 int wl1271_event_unmask(struct wl1271 *wl)
170 ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
177 void wl1271_event_mbox_config(struct wl1271 *wl)
179 wl->mbox_ptr[0] = wl1271_spi_read32(wl, REG_EVENT_MAILBOX_PTR);
180 wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
182 wl1271_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
183 wl->mbox_ptr[0], wl->mbox_ptr[1]);
186 int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
188 struct event_mailbox mbox;
191 wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
196 /* first we read the mbox descriptor */
197 wl1271_spi_read(wl, wl->mbox_ptr[mbox_num], &mbox,
198 sizeof(struct event_mailbox), false);
200 /* process the descriptor */
201 ret = wl1271_event_process(wl, &mbox);
205 /* then we let the firmware know it can go on...*/
206 wl1271_spi_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);