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isci: remove isci_timer interface

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Delete code which is no longer used.

Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Edmund Nadolski 2011-05-19 12:00:22 +00:00 • committed by Dan Williams
parent fd18388bc5
commit 8db02da528
9 changed files with 1 additions and 352 deletions
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2
drivers/scsi/isci/Makefile
View file

@ -1,6 +1,6 @@
obj-$(CONFIG_SCSI_ISCI) += isci.o obj-$(CONFIG_SCSI_ISCI) += isci.o
isci-objs := init.o phy.o request.o sata.o \ isci-objs := init.o phy.o request.o sata.o \
remote_device.o port.o timers.o \ remote_device.o port.o \
host.o task.o probe_roms.o \ host.o task.o probe_roms.o \
state_machine.o \ state_machine.o \
remote_node_context.o \ remote_node_context.o \

13
drivers/scsi/isci/host.c
View file

@ -67,7 +67,6 @@
#include "scu_remote_node_context.h" #include "scu_remote_node_context.h"
#include "scu_task_context.h" #include "scu_task_context.h"
#include "scu_unsolicited_frame.h" #include "scu_unsolicited_frame.h"
#include "timers.h"
#define SCU_CONTEXT_RAM_INIT_STALL_TIME 200 #define SCU_CONTEXT_RAM_INIT_STALL_TIME 200
@ -111,14 +110,6 @@
) )
#define SCIC_SDS_CONTROLLER_MIN_TIMER_COUNT 3
#define SCIC_SDS_CONTROLLER_MAX_TIMER_COUNT 3
/**
*
*
* The number of milliseconds to wait for a phy to start.
*/
#define SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT 100 #define SCIC_SDS_CONTROLLER_PHY_START_TIMEOUT 100
/** /**
@ -1379,8 +1370,6 @@ void isci_host_deinit(struct isci_host *ihost)
del_timer_sync(&ihost->sci.timer.timer); del_timer_sync(&ihost->sci.timer.timer);
del_timer_sync(&ihost->sci.phy_timer.timer); del_timer_sync(&ihost->sci.phy_timer.timer);
isci_timer_list_destroy(ihost);
} }
static void __iomem *scu_base(struct isci_host *isci_host) static void __iomem *scu_base(struct isci_host *isci_host)
@ -2517,8 +2506,6 @@ int isci_host_init(struct isci_host *isci_host)
union scic_user_parameters scic_user_params; union scic_user_parameters scic_user_params;
struct isci_pci_info *pci_info = to_pci_info(isci_host->pdev); struct isci_pci_info *pci_info = to_pci_info(isci_host->pdev);
isci_timer_list_construct(isci_host);
spin_lock_init(&isci_host->state_lock); spin_lock_init(&isci_host->state_lock);
spin_lock_init(&isci_host->scic_lock); spin_lock_init(&isci_host->scic_lock);
spin_lock_init(&isci_host->queue_lock); spin_lock_init(&isci_host->queue_lock);

1
drivers/scsi/isci/host.h
View file

@ -325,7 +325,6 @@ struct isci_host {
union scic_oem_parameters oem_parameters; union scic_oem_parameters oem_parameters;
int id; /* unique within a given pci device */ int id; /* unique within a given pci device */
struct list_head timers;
void *core_ctrl_memory; void *core_ctrl_memory;
struct dma_pool *dma_pool; struct dma_pool *dma_pool;
struct isci_phy phys[SCI_MAX_PHYS]; struct isci_phy phys[SCI_MAX_PHYS];

1
drivers/scsi/isci/phy.c
View file

@ -57,7 +57,6 @@
#include "host.h" #include "host.h"
#include "phy.h" #include "phy.h"
#include "scu_event_codes.h" #include "scu_event_codes.h"
#include "timers.h"
#include "probe_roms.h" #include "probe_roms.h"
/* Maximum arbitration wait time in micro-seconds */ /* Maximum arbitration wait time in micro-seconds */

1
drivers/scsi/isci/port.c
View file

@ -56,7 +56,6 @@
#include "isci.h" #include "isci.h"
#include "port.h" #include "port.h"
#include "request.h" #include "request.h"
#include "timers.h"
#define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000) #define SCIC_SDS_PORT_HARD_RESET_TIMEOUT (1000)
#define SCU_DUMMY_INDEX (0xFFFF) #define SCU_DUMMY_INDEX (0xFFFF)

1
drivers/scsi/isci/port_config.c
View file

@ -54,7 +54,6 @@
*/ */
#include "host.h" #include "host.h"
#include "timers.h"
#define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10) #define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10)
#define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10) #define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10)

1
drivers/scsi/isci/task.c
View file

@ -62,7 +62,6 @@
#include "request.h" #include "request.h"
#include "sata.h" #include "sata.h"
#include "task.h" #include "task.h"
#include "timers.h"
/** /**
* isci_task_refuse() - complete the request to the upper layer driver in * isci_task_refuse() - complete the request to the upper layer driver in

245
drivers/scsi/isci/timers.c
View file

@ -1,245 +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) 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);
}

88
drivers/scsi/isci/timers.h
View file

@ -1,88 +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) 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_) */