[linux-block.git] / drivers / net / wireless / wl12xx / wl1271_event.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_io.h"
#include "wl1271_event.h"
#include "wl1271_ps.h"
#include "wl12xx_80211.h"

void wl1271_pspoll_work(struct work_struct *work)
{
	struct delayed_work *dwork;
	struct wl1271 *wl;

	dwork = container_of(work, struct delayed_work, work);
	wl = container_of(dwork, struct wl1271, pspoll_work);

	wl1271_debug(DEBUG_EVENT, "pspoll work");

	mutex_lock(&wl->mutex);

	if (!test_and_clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags))
		goto out;

	if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
		goto out;

	/*
	 * if we end up here, then we were in powersave when the pspoll
	 * delivery failure occurred, and no-one changed state since, so
	 * we should go back to powersave.
	 */
	wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE, true);

out:
	mutex_unlock(&wl->mutex);
};

static void wl1271_event_pspoll_delivery_fail(struct wl1271 *wl)
{
	int delay = wl->conf.conn.ps_poll_recovery_period;
	int ret;

	wl->ps_poll_failures++;
	if (wl->ps_poll_failures == 1)
		wl1271_info("AP with dysfunctional ps-poll, "
			    "trying to work around it.");

	/* force active mode receive data from the AP */
	if (test_bit(WL1271_FLAG_PSM, &wl->flags)) {
		ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE, true);
		if (ret < 0)
			return;
		set_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
		ieee80211_queue_delayed_work(wl->hw, &wl->pspoll_work,
					     msecs_to_jiffies(delay));
	}

	/*
	 * If already in active mode, lets we should be getting data from
	 * the AP right away. If we enter PSM too fast after this, and data
	 * remains on the AP, we will get another event like this, and we'll
	 * go into active once more.
	 */
}

static int wl1271_event_scan_complete(struct wl1271 *wl,
				      struct event_mailbox *mbox)
{
	wl1271_debug(DEBUG_EVENT, "status: 0x%x",
		     mbox->scheduled_scan_status);

	if (test_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
		if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {
			/* 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.
			 */
			clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
			/* FIXME: ie missing! */
			wl1271_cmd_scan(wl, wl->scan.ssid, wl->scan.ssid_len,
					wl->scan.req,
					wl->scan.active,
					wl->scan.high_prio,
					WL1271_SCAN_BAND_5_GHZ,
					wl->scan.probe_requests);
		} else {
			mutex_unlock(&wl->mutex);
			ieee80211_scan_completed(wl->hw, false);
			mutex_lock(&wl->mutex);
			clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
		}
	}
	return 0;
}

static int wl1271_event_ps_report(struct wl1271 *wl,
				  struct event_mailbox *mbox,
				  bool *beacon_loss)
{
	int ret = 0;

	wl1271_debug(DEBUG_EVENT, "ps_status: 0x%x", mbox->ps_status);

	switch (mbox->ps_status) {
	case EVENT_ENTER_POWER_SAVE_FAIL:
		wl1271_debug(DEBUG_PSM, "PSM entry failed");

		if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
			/* remain in active mode */
			wl->psm_entry_retry = 0;
			break;
		}

		if (wl->psm_entry_retry < wl->conf.conn.psm_entry_retries) {
			wl->psm_entry_retry++;
			ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
						 true);
		} else {
			wl1271_info("No ack to nullfunc from AP.");
			wl->psm_entry_retry = 0;
			*beacon_loss = true;
		}
		break;
	case EVENT_ENTER_POWER_SAVE_SUCCESS:
		wl->psm_entry_retry = 0;

		/* enable beacon filtering */
		ret = wl1271_acx_beacon_filter_opt(wl, true);
		if (ret < 0)
			break;

		/* enable beacon early termination */
		ret = wl1271_acx_bet_enable(wl, true);
		if (ret < 0)
			break;

		/* go to extremely low power mode */
		wl1271_ps_elp_sleep(wl);
		if (ret < 0)
			break;
		break;
	case EVENT_EXIT_POWER_SAVE_FAIL:
		wl1271_debug(DEBUG_PSM, "PSM exit failed");

		if (test_bit(WL1271_FLAG_PSM, &wl->flags)) {
			wl->psm_entry_retry = 0;
			break;
		}

		/* make sure the firmware goes to active mode - the frame to
		   be sent next will indicate to the AP, that we are active. */
		ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
					 false);
		break;
	case EVENT_EXIT_POWER_SAVE_SUCCESS:
	default:
		break;
	}

	return ret;
}

static void wl1271_event_rssi_trigger(struct wl1271 *wl,
				      struct event_mailbox *mbox)
{
	enum nl80211_cqm_rssi_threshold_event event;
	s8 metric = mbox->rssi_snr_trigger_metric[0];

	wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric);

	if (metric <= wl->rssi_thold)
		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
	else
		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;

	if (event != wl->last_rssi_event)
		ieee80211_cqm_rssi_notify(wl->vif, event, GFP_KERNEL);
	wl->last_rssi_event = event;
}

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;
	bool beacon_loss = false;

	wl1271_event_mbox_dump(mbox);

	vector = le32_to_cpu(mbox->events_vector);
	vector &= ~(le32_to_cpu(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;
	}

	/* disable dynamic PS when requested by the firmware */
	if (vector & SOFT_GEMINI_SENSE_EVENT_ID &&
	    wl->bss_type == BSS_TYPE_STA_BSS) {
		if (mbox->soft_gemini_sense_info)
			ieee80211_disable_dyn_ps(wl->vif);
		else
			ieee80211_enable_dyn_ps(wl->vif);
	}

	/*
	 * 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.
	 *
	 * As there's possibility that the driver disables PSM before receiving
	 * BSS_LOSE_EVENT, beacon loss has to be reported to the stack.
	 *
	 */
	if (vector & BSS_LOSE_EVENT_ID) {
		wl1271_info("Beacon loss detected.");

		/* indicate to the stack, that beacons have been lost */
		beacon_loss = true;
	}

	if (vector & PS_REPORT_EVENT_ID) {
		wl1271_debug(DEBUG_EVENT, "PS_REPORT_EVENT");
		ret = wl1271_event_ps_report(wl, mbox, &beacon_loss);
		if (ret < 0)
			return ret;
	}

	if (vector & PSPOLL_DELIVERY_FAILURE_EVENT_ID)
		wl1271_event_pspoll_delivery_fail(wl);

	if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID) {
		wl1271_debug(DEBUG_EVENT, "RSSI_SNR_TRIGGER_0_EVENT");
		if (wl->vif)
			wl1271_event_rssi_trigger(wl, mbox);
	}

	if (wl->vif && beacon_loss)
		ieee80211_connection_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_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)
{
	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_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...*/
	wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);

	return 0;
}
Commit	Line	Data
f5fc0f86 LC	1	/*
	2	* This file is part of wl1271
	3	*
	4	* Copyright (C) 2008-2009 Nokia Corporation
	5	*
	6	* Contact: Luciano Coelho <luciano.coelho@nokia.com>
	7	*
	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.
	11	*
	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.
	16	*
	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
	20	* 02110-1301 USA
	21	*
	22	*/
	23
	24	#include "wl1271.h"
	25	#include "wl1271_reg.h"
7b048c52	26	#include "wl1271_io.h"
f5fc0f86 LC	27	#include "wl1271_event.h"
f5fc0f86 LC	28	#include "wl1271_ps.h"
66497dc3	29	#include "wl12xx_80211.h"
f5fc0f86	30
90494a90 JO	31	void wl1271_pspoll_work(struct work_struct *work)
	32	{
	33	struct delayed_work *dwork;
	34	struct wl1271 *wl;
	35
	36	dwork = container_of(work, struct delayed_work, work);
	37	wl = container_of(dwork, struct wl1271, pspoll_work);
	38
	39	wl1271_debug(DEBUG_EVENT, "pspoll work");
	40
	41	mutex_lock(&wl->mutex);
	42
	43	if (!test_and_clear_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags))
	44	goto out;
	45
	46	if (!test_bit(WL1271_FLAG_STA_ASSOCIATED, &wl->flags))
	47	goto out;
	48
	49	/*
	50	* if we end up here, then we were in powersave when the pspoll
	51	* delivery failure occurred, and no-one changed state since, so
	52	* we should go back to powersave.
	53	*/
	54	wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE, true);
	55
	56	out:
	57	mutex_unlock(&wl->mutex);
	58	};
	59
	60	static void wl1271_event_pspoll_delivery_fail(struct wl1271 *wl)
	61	{
	62	int delay = wl->conf.conn.ps_poll_recovery_period;
	63	int ret;
	64
	65	wl->ps_poll_failures++;
	66	if (wl->ps_poll_failures == 1)
	67	wl1271_info("AP with dysfunctional ps-poll, "
	68	"trying to work around it.");
	69
	70	/* force active mode receive data from the AP */
	71	if (test_bit(WL1271_FLAG_PSM, &wl->flags)) {
	72	ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE, true);
	73	if (ret < 0)
	74	return;
	75	set_bit(WL1271_FLAG_PSPOLL_FAILURE, &wl->flags);
	76	ieee80211_queue_delayed_work(wl->hw, &wl->pspoll_work,
	77	msecs_to_jiffies(delay));
	78	}
	79
	80	/*
	81	* If already in active mode, lets we should be getting data from
	82	* the AP right away. If we enter PSM too fast after this, and data
	83	* remains on the AP, we will get another event like this, and we'll
	84	* go into active once more.
	85	*/
	86	}
	87
f5fc0f86 LC	88	static int wl1271_event_scan_complete(struct wl1271 *wl,
	89	struct event_mailbox *mbox)
	90	{
	91	wl1271_debug(DEBUG_EVENT, "status: 0x%x",
	92	mbox->scheduled_scan_status);
	93
71449f8d	94	if (test_bit(WL1271_FLAG_SCANNING, &wl->flags)) {
abb0b3bf	95	if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {
abb0b3bf TP	96	/* 2.4 GHz band scanned, scan 5 GHz band, pretend
	97	* to the wl1271_cmd_scan function that we are not
	98	* scanning as it checks that.
	99	*/
71449f8d	100	clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
818e3063	101	/* FIXME: ie missing! */
abb0b3bf	102	wl1271_cmd_scan(wl, wl->scan.ssid, wl->scan.ssid_len,
4fb26fa9 JO	103	wl->scan.req,
	104	wl->scan.active,
	105	wl->scan.high_prio,
	106	WL1271_SCAN_BAND_5_GHZ,
	107	wl->scan.probe_requests);
abb0b3bf	108	} else {
abb0b3bf TP	109	mutex_unlock(&wl->mutex);
	110	ieee80211_scan_completed(wl->hw, false);
	111	mutex_lock(&wl->mutex);
71449f8d	112	clear_bit(WL1271_FLAG_SCANNING, &wl->flags);
abb0b3bf TP	113	}
abb0b3bf TP	114	}
f5fc0f86 LC	115	return 0;
	116	}
	117
19ad0715 JO	118	static int wl1271_event_ps_report(struct wl1271 *wl,
	119	struct event_mailbox *mbox,
	120	bool *beacon_loss)
	121	{
	122	int ret = 0;
	123
	124	wl1271_debug(DEBUG_EVENT, "ps_status: 0x%x", mbox->ps_status);
	125
	126	switch (mbox->ps_status) {
	127	case EVENT_ENTER_POWER_SAVE_FAIL:
d8c42c0c JO	128	wl1271_debug(DEBUG_PSM, "PSM entry failed");
d8c42c0c JO	129
71449f8d	130	if (!test_bit(WL1271_FLAG_PSM, &wl->flags)) {
d8c42c0c	131	/* remain in active mode */
461fa136 JO	132	wl->psm_entry_retry = 0;
	133	break;
	134	}
	135
19ad0715 JO	136	if (wl->psm_entry_retry < wl->conf.conn.psm_entry_retries) {
19ad0715 JO	137	wl->psm_entry_retry++;
d8c42c0c JO	138	ret = wl1271_ps_set_mode(wl, STATION_POWER_SAVE_MODE,
d8c42c0c JO	139	true);
19ad0715	140	} else {
1a186a51	141	wl1271_info("No ack to nullfunc from AP.");
19ad0715	142	wl->psm_entry_retry = 0;
d60772f6	143	*beacon_loss = true;
19ad0715 JO	144	}
	145	break;
	146	case EVENT_ENTER_POWER_SAVE_SUCCESS:
	147	wl->psm_entry_retry = 0;
d8c42c0c JO	148
	149	/* enable beacon filtering */
	150	ret = wl1271_acx_beacon_filter_opt(wl, true);
	151	if (ret < 0)
	152	break;
	153
	154	/* enable beacon early termination */
	155	ret = wl1271_acx_bet_enable(wl, true);
	156	if (ret < 0)
	157	break;
	158
	159	/* go to extremely low power mode */
	160	wl1271_ps_elp_sleep(wl);
	161	if (ret < 0)
	162	break;
19ad0715 JO	163	break;
19ad0715 JO	164	case EVENT_EXIT_POWER_SAVE_FAIL:
d8c42c0c JO	165	wl1271_debug(DEBUG_PSM, "PSM exit failed");
	166
	167	if (test_bit(WL1271_FLAG_PSM, &wl->flags)) {
	168	wl->psm_entry_retry = 0;
	169	break;
	170	}
	171
30240fc7 JO	172	/* make sure the firmware goes to active mode - the frame to
30240fc7 JO	173	be sent next will indicate to the AP, that we are active. */
d8c42c0c JO	174	ret = wl1271_ps_set_mode(wl, STATION_ACTIVE_MODE,
d8c42c0c JO	175	false);
19ad0715 JO	176	break;
	177	case EVENT_EXIT_POWER_SAVE_SUCCESS:
	178	default:
	179	break;
	180	}
	181
	182	return ret;
	183	}
	184
00236aed JO	185	static void wl1271_event_rssi_trigger(struct wl1271 *wl,
	186	struct event_mailbox *mbox)
	187	{
	188	enum nl80211_cqm_rssi_threshold_event event;
	189	s8 metric = mbox->rssi_snr_trigger_metric[0];
	190
	191	wl1271_debug(DEBUG_EVENT, "RSSI trigger metric: %d", metric);
	192
	193	if (metric <= wl->rssi_thold)
	194	event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
	195	else
	196	event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
	197
	198	if (event != wl->last_rssi_event)
	199	ieee80211_cqm_rssi_notify(wl->vif, event, GFP_KERNEL);
	200	wl->last_rssi_event = event;
	201	}
	202
f5fc0f86 LC	203	static void wl1271_event_mbox_dump(struct event_mailbox *mbox)
	204	{
	205	wl1271_debug(DEBUG_EVENT, "MBOX DUMP:");
	206	wl1271_debug(DEBUG_EVENT, "\tvector: 0x%x", mbox->events_vector);
	207	wl1271_debug(DEBUG_EVENT, "\tmask: 0x%x", mbox->events_mask);
	208	}
	209
	210	static int wl1271_event_process(struct wl1271 wl, struct event_mailbox mbox)
	211	{
	212	int ret;
	213	u32 vector;
19ad0715	214	bool beacon_loss = false;
f5fc0f86 LC	215
	216	wl1271_event_mbox_dump(mbox);
	217
d0f63b20 LC	218	vector = le32_to_cpu(mbox->events_vector);
d0f63b20 LC	219	vector &= ~(le32_to_cpu(mbox->events_mask));
f5fc0f86 LC	220	wl1271_debug(DEBUG_EVENT, "vector: 0x%x", vector);
	221
	222	if (vector & SCAN_COMPLETE_EVENT_ID) {
	223	ret = wl1271_event_scan_complete(wl, mbox);
	224	if (ret < 0)
	225	return ret;
	226	}
	227
8d2ef7bd JO	228	/* disable dynamic PS when requested by the firmware */
	229	if (vector & SOFT_GEMINI_SENSE_EVENT_ID &&
	230	wl->bss_type == BSS_TYPE_STA_BSS) {
	231	if (mbox->soft_gemini_sense_info)
f532be6d	232	ieee80211_disable_dyn_ps(wl->vif);
8d2ef7bd	233	else
f532be6d	234	ieee80211_enable_dyn_ps(wl->vif);
8d2ef7bd JO	235	}
8d2ef7bd JO	236
b771eee5 JO	237	/*
	238	* The BSS_LOSE_EVENT_ID is only needed while psm (and hence beacon
	239	* filtering) is enabled. Without PSM, the stack will receive all
	240	* beacons and can detect beacon loss by itself.
64e29e44 TP	241	*
	242	* As there's possibility that the driver disables PSM before receiving
	243	* BSS_LOSE_EVENT, beacon loss has to be reported to the stack.
	244	*
b771eee5	245	*/
64e29e44	246	if (vector & BSS_LOSE_EVENT_ID) {
1a186a51	247	wl1271_info("Beacon loss detected.");
f5fc0f86	248
b771eee5	249	/* indicate to the stack, that beacons have been lost */
19ad0715 JO	250	beacon_loss = true;
	251	}
	252
	253	if (vector & PS_REPORT_EVENT_ID) {
	254	wl1271_debug(DEBUG_EVENT, "PS_REPORT_EVENT");
	255	ret = wl1271_event_ps_report(wl, mbox, &beacon_loss);
	256	if (ret < 0)
	257	return ret;
	258	}
	259
90494a90 JO	260	if (vector & PSPOLL_DELIVERY_FAILURE_EVENT_ID)
	261	wl1271_event_pspoll_delivery_fail(wl);
	262
00236aed JO	263	if (vector & RSSI_SNR_TRIGGER_0_EVENT_ID) {
	264	wl1271_debug(DEBUG_EVENT, "RSSI_SNR_TRIGGER_0_EVENT");
	265	if (wl->vif)
	266	wl1271_event_rssi_trigger(wl, mbox);
	267	}
	268
d60772f6 JO	269	if (wl->vif && beacon_loss)
d60772f6 JO	270	ieee80211_connection_loss(wl->vif);
f5fc0f86 LC	271
	272	return 0;
	273	}
	274
	275	int wl1271_event_unmask(struct wl1271 *wl)
	276	{
	277	int ret;
	278
	279	ret = wl1271_acx_event_mbox_mask(wl, ~(wl->event_mask));
	280	if (ret < 0)
	281	return ret;
	282
	283	return 0;
	284	}
	285
	286	void wl1271_event_mbox_config(struct wl1271 *wl)
	287	{
7b048c52	288	wl->mbox_ptr[0] = wl1271_read32(wl, REG_EVENT_MAILBOX_PTR);
f5fc0f86 LC	289	wl->mbox_ptr[1] = wl->mbox_ptr[0] + sizeof(struct event_mailbox);
	290
	291	wl1271_debug(DEBUG_EVENT, "MBOX ptrs: 0x%x 0x%x",
	292	wl->mbox_ptr[0], wl->mbox_ptr[1]);
	293	}
	294
13f2dc52	295	int wl1271_event_handle(struct wl1271 *wl, u8 mbox_num)
f5fc0f86 LC	296	{
	297	struct event_mailbox mbox;
	298	int ret;
	299
	300	wl1271_debug(DEBUG_EVENT, "EVENT on mbox %d", mbox_num);
	301
	302	if (mbox_num > 1)
	303	return -EINVAL;
	304
	305	/* first we read the mbox descriptor */
7b048c52 TP	306	wl1271_read(wl, wl->mbox_ptr[mbox_num], &mbox,
7b048c52 TP	307	sizeof(struct event_mailbox), false);
f5fc0f86 LC	308
	309	/* process the descriptor */
	310	ret = wl1271_event_process(wl, &mbox);
	311	if (ret < 0)
	312	return ret;
	313
	314	/* then we let the firmware know it can go on...*/
7b048c52	315	wl1271_write32(wl, ACX_REG_INTERRUPT_TRIG, INTR_TRIG_EVENT_ACK);
f5fc0f86 LC	316
	317	return 0;
	318	}