mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 21:33:00 +00:00
1fd2794f36
The event handling mechanism could miss events if multiple events would occur simultaneously. Fix event handling mechanism to process all events. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
155 lines
4.0 KiB
C
155 lines
4.0 KiB
C
/*
|
|
* 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 "wl1271.h"
|
|
#include "wl1271_reg.h"
|
|
#include "wl1271_spi.h"
|
|
#include "wl1271_event.h"
|
|
#include "wl1271_ps.h"
|
|
#include "wl12xx_80211.h"
|
|
|
|
static int wl1271_event_scan_complete(struct wl1271 *wl,
|
|
struct event_mailbox *mbox)
|
|
{
|
|
int size = sizeof(struct wl12xx_probe_req_template);
|
|
wl1271_debug(DEBUG_EVENT, "status: 0x%x",
|
|
mbox->scheduled_scan_status);
|
|
|
|
if (wl->scanning) {
|
|
if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {
|
|
wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
|
|
NULL, size);
|
|
/* 2.4 GHz band scanned, scan 5 GHz band, pretend
|
|
* to the wl1271_cmd_scan function that we are not
|
|
* scanning as it checks that.
|
|
*/
|
|
wl->scanning = false;
|
|
wl1271_cmd_scan(wl, wl->scan.ssid, wl->scan.ssid_len,
|
|
wl->scan.active,
|
|
wl->scan.high_prio,
|
|
WL1271_SCAN_BAND_5_GHZ,
|
|
wl->scan.probe_requests);
|
|
} else {
|
|
if (wl->scan.state == WL1271_SCAN_BAND_2_4_GHZ)
|
|
wl1271_cmd_template_set(wl,
|
|
CMD_TEMPL_CFG_PROBE_REQ_2_4,
|
|
NULL, size);
|
|
else
|
|
wl1271_cmd_template_set(wl,
|
|
CMD_TEMPL_CFG_PROBE_REQ_5,
|
|
NULL, size);
|
|
|
|
mutex_unlock(&wl->mutex);
|
|
ieee80211_scan_completed(wl->hw, false);
|
|
mutex_lock(&wl->mutex);
|
|
wl->scanning = false;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
|
|
wl1271_event_mbox_dump(mbox);
|
|
|
|
vector = mbox->events_vector & ~(mbox->events_mask);
|
|
wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector);
|
|
|
|
if (vector & SCAN_COMPLETE_EVENT_ID) {
|
|
ret = wl1271_event_scan_complete(wl, mbox);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (vector & BSS_LOSE_EVENT_ID && wl->psm) {
|
|
wl1271_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
|
|
|
|
/* indicate to the stack, that beacons have been lost */
|
|
ieee80211_beacon_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_spi_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, bool do_ack)
|
|
{
|
|
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_spi_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...*/
|
|
if (do_ack)
|
|
wl1271_spi_write32(wl, ACX_REG_INTERRUPT_TRIG,
|
|
INTR_TRIG_EVENT_ACK);
|
|
|
|
return 0;
|
|
}
|