139 lines
5.2 KiB
C
139 lines
5.2 KiB
C
/******************************************************************************
|
|
*
|
|
* 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 - 2013 Intel Corporation. All rights reserved.
|
|
*
|
|
* 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 - 2013 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
|
|
* 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.
|
|
*
|
|
*****************************************************************************/
|
|
#ifndef __iwl_notif_wait_h__
|
|
#define __iwl_notif_wait_h__
|
|
|
|
#include <linux/wait.h>
|
|
|
|
#include "iwl-trans.h"
|
|
|
|
struct iwl_notif_wait_data {
|
|
struct list_head notif_waits;
|
|
spinlock_t notif_wait_lock;
|
|
wait_queue_head_t notif_waitq;
|
|
};
|
|
|
|
#define MAX_NOTIF_CMDS 5
|
|
|
|
/**
|
|
* struct iwl_notification_wait - notification wait entry
|
|
* @list: list head for global list
|
|
* @fn: Function called with the notification. If the function
|
|
* returns true, the wait is over, if it returns false then
|
|
* the waiter stays blocked. If no function is given, any
|
|
* of the listed commands will unblock the waiter.
|
|
* @cmds: command IDs
|
|
* @n_cmds: number of command IDs
|
|
* @triggered: waiter should be woken up
|
|
* @aborted: wait was aborted
|
|
*
|
|
* This structure is not used directly, to wait for a
|
|
* notification declare it on the stack, and call
|
|
* iwlagn_init_notification_wait() with appropriate
|
|
* parameters. Then do whatever will cause the ucode
|
|
* to notify the driver, and to wait for that then
|
|
* call iwlagn_wait_notification().
|
|
*
|
|
* Each notification is one-shot. If at some point we
|
|
* need to support multi-shot notifications (which
|
|
* can't be allocated on the stack) we need to modify
|
|
* the code for them.
|
|
*/
|
|
struct iwl_notification_wait {
|
|
struct list_head list;
|
|
|
|
bool (*fn)(struct iwl_notif_wait_data *notif_data,
|
|
struct iwl_rx_packet *pkt, void *data);
|
|
void *fn_data;
|
|
|
|
u8 cmds[MAX_NOTIF_CMDS];
|
|
u8 n_cmds;
|
|
bool triggered, aborted;
|
|
};
|
|
|
|
|
|
/* caller functions */
|
|
void iwl_notification_wait_init(struct iwl_notif_wait_data *notif_data);
|
|
void iwl_notification_wait_notify(struct iwl_notif_wait_data *notif_data,
|
|
struct iwl_rx_packet *pkt);
|
|
void iwl_abort_notification_waits(struct iwl_notif_wait_data *notif_data);
|
|
|
|
/* user functions */
|
|
void __acquires(wait_entry)
|
|
iwl_init_notification_wait(struct iwl_notif_wait_data *notif_data,
|
|
struct iwl_notification_wait *wait_entry,
|
|
const u8 *cmds, int n_cmds,
|
|
bool (*fn)(struct iwl_notif_wait_data *notif_data,
|
|
struct iwl_rx_packet *pkt, void *data),
|
|
void *fn_data);
|
|
|
|
int __must_check __releases(wait_entry)
|
|
iwl_wait_notification(struct iwl_notif_wait_data *notif_data,
|
|
struct iwl_notification_wait *wait_entry,
|
|
unsigned long timeout);
|
|
|
|
void __releases(wait_entry)
|
|
iwl_remove_notification(struct iwl_notif_wait_data *notif_data,
|
|
struct iwl_notification_wait *wait_entry);
|
|
|
|
#endif /* __iwl_notif_wait_h__ */
|