f11c7f6305
The isci driver is for the integrated SAS controller in the Intel C600 (Patsburg) chipset. Source files in sys/dev/isci directory are FreeBSD-specific, and sys/dev/isci/scil subdirectory contains an OS-agnostic library (SCIL) published by Intel to control the SAS controller. This library is used primarily as-is in this driver, with some post-processing to better integrate into the kernel build environment. isci.4 and a README in the sys/dev/isci directory contain a few additional details. This driver is only built for amd64 and i386 targets. Sponsored by: Intel Reviewed by: scottl Approved by: scottl
150 lines
4.9 KiB
C
150 lines
4.9 KiB
C
/*-
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/**
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* @file
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*
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* @brief This file contains the base subject method implementations and
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* any constants or structures private to the base subject object.
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* A subject is a participant in the observer design pattern. A
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* subject represents the object being observed.
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*/
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#include <dev/isci/scil/sci_types.h>
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#include <dev/isci/scil/sci_base_subject.h>
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#include <dev/isci/scil/sci_base_observer.h>
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#if defined(SCI_LOGGING)
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//******************************************************************************
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//* P R O T E C T E D M E T H O D S
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//******************************************************************************
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void sci_base_subject_construct(
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SCI_BASE_SUBJECT_T *this_subject
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)
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{
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this_subject->observer_list = NULL;
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}
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// ---------------------------------------------------------------------------
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void sci_base_subject_notify(
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SCI_BASE_SUBJECT_T *this_subject
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)
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{
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SCI_BASE_OBSERVER_T *this_observer = this_subject->observer_list;
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while (this_observer != NULL)
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{
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sci_base_observer_update(this_observer, this_subject);
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this_observer = this_observer->next;
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}
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}
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// ---------------------------------------------------------------------------
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void sci_base_subject_attach_observer(
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SCI_BASE_SUBJECT_T *this_subject,
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SCI_BASE_OBSERVER_T *observer
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)
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{
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observer->next = this_subject->observer_list;
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this_subject->observer_list = observer;
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}
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// ---------------------------------------------------------------------------
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void sci_base_subject_detach_observer(
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SCI_BASE_SUBJECT_T *this_subject,
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SCI_BASE_OBSERVER_T *observer
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)
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{
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SCI_BASE_OBSERVER_T *current_observer = this_subject->observer_list;
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SCI_BASE_OBSERVER_T *previous_observer = NULL;
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// Search list for the item to remove
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while (
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current_observer != NULL
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&& current_observer != observer
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)
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{
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previous_observer = current_observer;
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current_observer = current_observer->next;
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}
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// Was this observer in the list?
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if (current_observer == observer)
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{
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if (previous_observer != NULL)
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{
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// Remove from middle or end of list
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previous_observer->next = observer->next;
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}
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else
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{
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// Remove from the front of the list
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this_subject->observer_list = observer->next;
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}
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// protect the list so people dont follow bad pointers
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observer->next = NULL;
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}
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}
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#endif // defined(SCI_LOGGING)
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