+++ /dev/null
-/******************************************************************************
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2015 Intel Deutschland GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License 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 Street, Fifth Floor, Boston, MA 02110,
- * USA
- *
- * The full GNU General Public License is included in this distribution
- * in the file called COPYING.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- * BSD LICENSE
- *
- * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *****************************************************************************/
-#include <linux/sched.h>
-#include <linux/export.h>
-
-#include "iwl-drv.h"
-#include "iwl-notif-wait.h"
-
-
-void iwl_notification_wait_init(struct iwl_notif_wait_data *notif_wait)
-{
- spin_lock_init(¬if_wait->notif_wait_lock);
- INIT_LIST_HEAD(¬if_wait->notif_waits);
- init_waitqueue_head(¬if_wait->notif_waitq);
-}
-IWL_EXPORT_SYMBOL(iwl_notification_wait_init);
-
-void iwl_notification_wait_notify(struct iwl_notif_wait_data *notif_wait,
- struct iwl_rx_packet *pkt)
-{
- bool triggered = false;
-
- if (!list_empty(¬if_wait->notif_waits)) {
- struct iwl_notification_wait *w;
-
- spin_lock(¬if_wait->notif_wait_lock);
- list_for_each_entry(w, ¬if_wait->notif_waits, list) {
- int i;
- bool found = false;
-
- /*
- * If it already finished (triggered) or has been
- * aborted then don't evaluate it again to avoid races,
- * Otherwise the function could be called again even
- * though it returned true before
- */
- if (w->triggered || w->aborted)
- continue;
-
- for (i = 0; i < w->n_cmds; i++) {
- if (w->cmds[i] ==
- WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) {
- found = true;
- break;
- }
- }
- if (!found)
- continue;
-
- if (!w->fn || w->fn(notif_wait, pkt, w->fn_data)) {
- w->triggered = true;
- triggered = true;
- }
- }
- spin_unlock(¬if_wait->notif_wait_lock);
-
- }
-
- if (triggered)
- wake_up_all(¬if_wait->notif_waitq);
-}
-IWL_EXPORT_SYMBOL(iwl_notification_wait_notify);
-
-void iwl_abort_notification_waits(struct iwl_notif_wait_data *notif_wait)
-{
- struct iwl_notification_wait *wait_entry;
-
- spin_lock(¬if_wait->notif_wait_lock);
- list_for_each_entry(wait_entry, ¬if_wait->notif_waits, list)
- wait_entry->aborted = true;
- spin_unlock(¬if_wait->notif_wait_lock);
-
- wake_up_all(¬if_wait->notif_waitq);
-}
-IWL_EXPORT_SYMBOL(iwl_abort_notification_waits);
-
-void
-iwl_init_notification_wait(struct iwl_notif_wait_data *notif_wait,
- struct iwl_notification_wait *wait_entry,
- const u16 *cmds, int n_cmds,
- bool (*fn)(struct iwl_notif_wait_data *notif_wait,
- struct iwl_rx_packet *pkt, void *data),
- void *fn_data)
-{
- if (WARN_ON(n_cmds > MAX_NOTIF_CMDS))
- n_cmds = MAX_NOTIF_CMDS;
-
- wait_entry->fn = fn;
- wait_entry->fn_data = fn_data;
- wait_entry->n_cmds = n_cmds;
- memcpy(wait_entry->cmds, cmds, n_cmds * sizeof(u16));
- wait_entry->triggered = false;
- wait_entry->aborted = false;
-
- spin_lock_bh(¬if_wait->notif_wait_lock);
- list_add(&wait_entry->list, ¬if_wait->notif_waits);
- spin_unlock_bh(¬if_wait->notif_wait_lock);
-}
-IWL_EXPORT_SYMBOL(iwl_init_notification_wait);
-
-int iwl_wait_notification(struct iwl_notif_wait_data *notif_wait,
- struct iwl_notification_wait *wait_entry,
- unsigned long timeout)
-{
- int ret;
-
- ret = wait_event_timeout(notif_wait->notif_waitq,
- wait_entry->triggered || wait_entry->aborted,
- timeout);
-
- spin_lock_bh(¬if_wait->notif_wait_lock);
- list_del(&wait_entry->list);
- spin_unlock_bh(¬if_wait->notif_wait_lock);
-
- if (wait_entry->aborted)
- return -EIO;
-
- /* return value is always >= 0 */
- if (ret <= 0)
- return -ETIMEDOUT;
- return 0;
-}
-IWL_EXPORT_SYMBOL(iwl_wait_notification);
-
-void iwl_remove_notification(struct iwl_notif_wait_data *notif_wait,
- struct iwl_notification_wait *wait_entry)
-{
- spin_lock_bh(¬if_wait->notif_wait_lock);
- list_del(&wait_entry->list);
- spin_unlock_bh(¬if_wait->notif_wait_lock);
-}
-IWL_EXPORT_SYMBOL(iwl_remove_notification);
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