+++ /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) 2008 - 2011 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 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 of 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 "isci.h"
-#include "timers.h"
-#include "host.h"
-
-/**
- * isci_timer_list_construct() - This method contrucst the SCI Timer List
- * object used by the SCI Module class. The construction process involves
- * creating isci_timer objects and adding them to the SCI Timer List
- * object's list member. The number of isci_timer objects is determined by
- * the timer_list_size parameter.
- * @ihost: container of the timer list
- *
- * This method returns an error code indicating sucess or failure. The user
- * should check for possible memory allocation error return otherwise, a zero
- * indicates success.
- */
-int isci_timer_list_construct(struct isci_host *ihost)
-{
- struct isci_timer *itimer;
- int i, err = 0;
-
- INIT_LIST_HEAD(&ihost->timers);
- for (i = 0; i < SCI_MAX_TIMER_COUNT; i++) {
- itimer = devm_kzalloc(&ihost->pdev->dev, sizeof(*itimer), GFP_KERNEL);
-
- if (!itimer) {
- err = -ENOMEM;
- break;
- }
- init_timer(&itimer->timer);
- itimer->used = 0;
- itimer->stopped = 1;
- list_add(&itimer->node, &ihost->timers);
- }
-
- return err;
-}
-
-/**
- * isci_timer_list_destroy() - This method destroys the SCI Timer List object
- * used by the SCI Module class. The destruction process involves freeing
- * memory allocated for isci_timer objects on the SCI Timer List object's
- * timers list_head member. If any isci_timer objects are mark as "in use",
- * they are not freed and the function returns an error code of -EBUSY.
- * @ihost: container of the list to be destroyed
- */
-void isci_timer_list_destroy(struct isci_host *ihost)
-{
- struct isci_timer *timer;
- LIST_HEAD(list);
-
- spin_lock_irq(&ihost->scic_lock);
- list_splice_init(&ihost->timers, &list);
- spin_unlock_irq(&ihost->scic_lock);
-
- list_for_each_entry(timer, &list, node)
- del_timer_sync(&timer->timer);
-}
-
-/**
- * This method pulls an isci_timer object off of the list for the SCI Timer
- * List object specified, marks the isci_timer as "in use" and initializes
- * it with user callback function and cookie data. The timer is not start at
- * this time, just reserved for the user.
- * @isci_timer_list: This parameter points to the SCI Timer List from which the
- * timer is reserved.
- * @cookie: This parameter specifies a piece of information that the user must
- * retain. This cookie is to be supplied by the user anytime a timeout
- * occurs for the created timer.
- * @timer_callback: This parameter specifies the callback method to be invoked
- * whenever the timer expires.
- *
- * This method returns a pointer to an isci_timer object reserved from the SCI
- * Timer List. The pointer will be utilized for all further interactions
- * relating to this timer.
- */
-
-static void timer_function(unsigned long data)
-{
-
- struct isci_timer *timer = (struct isci_timer *)data;
- struct isci_host *isci_host = timer->isci_host;
- unsigned long flags;
-
- dev_dbg(&isci_host->pdev->dev,
- "%s: isci_timer = %p\n", __func__, timer);
-
- if (isci_stopped == isci_host_get_state(isci_host)) {
- timer->stopped = 1;
- return;
- }
-
- spin_lock_irqsave(&isci_host->scic_lock, flags);
-
- if (!timer->stopped) {
- timer->stopped = 1;
- timer->timer_callback(timer->cb_param);
- }
-
- spin_unlock_irqrestore(&isci_host->scic_lock, flags);
-}
-
-
-struct isci_timer *isci_timer_create(struct isci_host *ihost, void *cb_param,
- void (*timer_callback)(void *))
-{
- struct timer_list *timer;
- struct isci_timer *isci_timer;
- struct list_head *list = &ihost->timers;
-
- WARN_ONCE(!spin_is_locked(&ihost->scic_lock),
- "%s: unlocked!\n", __func__);
-
- if (WARN_ONCE(list_empty(list), "%s: timer pool empty\n", __func__))
- return NULL;
-
- isci_timer = list_entry(list->next, struct isci_timer, node);
-
- isci_timer->used = 1;
- isci_timer->stopped = 1;
- /* FIXME: what!? we recycle the timer, rather than take it off
- * the free list?
- */
- list_move_tail(&isci_timer->node, list);
-
- timer = &isci_timer->timer;
- timer->data = (unsigned long)isci_timer;
- timer->function = timer_function;
- isci_timer->cb_param = cb_param;
- isci_timer->timer_callback = timer_callback;
- isci_timer->isci_host = ihost;
-
- dev_dbg(&ihost->pdev->dev,
- "%s: isci_timer = %p\n", __func__, isci_timer);
-
- return isci_timer;
-}
-
-/* isci_del_timer() - This method frees the isci_timer, marking it "free to
- * use", then places its back at the head of the timers list for the SCI
- * Timer List object specified.
- */
-void isci_del_timer(struct isci_host *ihost, struct isci_timer *isci_timer)
-{
- struct list_head *list = &ihost->timers;
-
- WARN_ONCE(!spin_is_locked(&ihost->scic_lock),
- "%s unlocked!\n", __func__);
-
- dev_dbg(&isci_timer->isci_host->pdev->dev,
- "%s: isci_timer = %p\n", __func__, isci_timer);
-
- isci_timer->used = 0;
- list_move(&isci_timer->node, list);
- del_timer(&isci_timer->timer);
- isci_timer->stopped = 1;
-}
-
-/**
- * isci_timer_start() - This method starts the specified isci_timer, with the
- * specified timeout value.
- * @isci_timer: This parameter specifies the timer to be started.
- * @timeout: This parameter specifies the timeout, in milliseconds, after which
- * the associated callback function will be called.
- *
- */
-void isci_timer_start(struct isci_timer *isci_timer, unsigned long tmo)
-{
- struct timer_list *timer = &isci_timer->timer;
-
- dev_dbg(&isci_timer->isci_host->pdev->dev,
- "%s: isci_timer = %p\n", __func__, isci_timer);
-
- isci_timer->stopped = 0;
- mod_timer(timer, jiffies + msecs_to_jiffies(tmo));
-}
-
-/**
- * isci_timer_stop() - This method stops the supplied isci_timer.
- * @isci_timer: This parameter specifies the isci_timer to be stopped.
- *
- */
-void isci_timer_stop(struct isci_timer *isci_timer)
-{
- dev_dbg(&isci_timer->isci_host->pdev->dev,
- "%s: isci_timer = %p\n", __func__, isci_timer);
-
- isci_timer->stopped = 1;
- del_timer(&isci_timer->timer);
-}
+++ /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) 2008 - 2011 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
- * The full GNU General Public License is included in this distribution
- * in the file called LICENSE.GPL.
- *
- * BSD LICENSE
- *
- * Copyright(c) 2008 - 2011 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 of 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.
- */
-
-#if !defined(_SCI_TIMER_H_)
-#define _SCI_TIMER_H_
-
-#include <linux/timer.h>
-#include <linux/types.h>
-
-#define SCI_MAX_TIMER_COUNT 25
-
-/**
- * struct isci_timer - This class represents the timer object used by SCIC. It
- * wraps the Linux timer_list object, and (TODO) should be removed in favor
- * of a delayed-workqueue style interface with simpler locking
- *
- */
-struct isci_timer {
- int used;
- int stopped;
- void *cb_param;
- void (*timer_callback)(void *);
- struct list_head node;
- struct timer_list timer;
- struct isci_host *isci_host;
-};
-
-int isci_timer_list_construct(struct isci_host *ihost);
-void isci_timer_list_destroy(struct isci_host *ihost);
-struct isci_timer *isci_timer_create(struct isci_host *ihost, void *cb_param,
- void (*timer_callback)(void *));
-void isci_del_timer(struct isci_host *ihost, struct isci_timer *itimer);
-void isci_timer_start(struct isci_timer *isci_timer, unsigned long timeout);
-void isci_timer_stop(struct isci_timer *isci_timer);
-
-#endif /* !defined (_SCI_TIMER_H_) */
projects / karo-tx-linux.git / commitdiff