diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-notif-wait.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-notif-wait.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-notif-wait.c b/drivers/net/wireless/iwlwifi/iwl-notif-wait.c deleted file mode 100644 index 6caf2affb..000000000 --- a/drivers/net/wireless/iwlwifi/iwl-notif-wait.c +++ /dev/null @@ -1,193 +0,0 @@ -/****************************************************************************** - * - * 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); |