299 lines
9.6 KiB
C
299 lines
9.6 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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* $FreeBSD$
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*/
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#ifndef _SCI_BASE_REMOTE_DEVICE_H_
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#define _SCI_BASE_REMOTE_DEVICE_H_
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/**
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* @file
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*
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* @brief This file contains all of the structures, constants, and methods
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* common to all remote device object definitions.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#include <dev/isci/scil/sci_base_state_machine.h>
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#include <dev/isci/scil/sci_base_logger.h>
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#include <dev/isci/scil/sci_base_state_machine_logger.h>
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struct SCI_BASE_REQUEST;
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/**
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* @enum SCI_BASE_REMOTE_DEVICE_STATES
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*
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* @brief This enumeration depicts all the states for the common remote device
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* state machine.
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*/
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typedef enum _SCI_BASE_REMOTE_DEVICE_STATES
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{
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/**
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* Simply the initial state for the base remote device state machine.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_INITIAL,
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/**
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* This state indicates that the remote device has successfully been
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* stopped. In this state no new IO operations are permitted.
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* This state is entered from the INITIAL state.
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* This state is entered from the STOPPING state.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_STOPPED,
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/**
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* This state indicates the remote device is in the process of
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* becoming ready (i.e. starting). In this state no new IO operations
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* are permitted.
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* This state is entered from the STOPPED state.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_STARTING,
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/**
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* This state indicates the remote device is now ready. Thus, the user
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* is able to perform IO operations on the remote device.
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* This state is entered from the STARTING state.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_READY,
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/**
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* This state indicates that the remote device is in the process of
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* stopping. In this state no new IO operations are permitted, but
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* existing IO operations are allowed to complete.
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* This state is entered from the READY state.
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* This state is entered from the FAILED state.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_STOPPING,
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/**
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* This state indicates that the remote device has failed.
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* In this state no new IO operations are permitted.
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* This state is entered from the INITIALIZING state.
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* This state is entered from the READY state.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_FAILED,
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/**
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* This state indicates the device is being reset.
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* In this state no new IO operations are permitted.
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* This state is entered from the READY state.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_RESETTING,
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#if !defined(DISABLE_WIDE_PORTED_TARGETS)
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/**
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* This state indicates the device is in the middle of updating
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* its port width. All the IOs sent to this device will be Quiesced.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_UPDATING_PORT_WIDTH,
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#endif
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/**
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* Simply the final state for the base remote device state machine.
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*/
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SCI_BASE_REMOTE_DEVICE_STATE_FINAL,
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SCI_BASE_REMOTE_DEVICE_MAX_STATES
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} SCI_BASE_REMOTE_DEVICE_STATES;
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/**
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* @struct SCI_BASE_REMOTE_DEVICE
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*
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* @brief The base remote device object abstracts the fields common to all
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* SCI remote device objects.
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*/
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typedef struct SCI_BASE_REMOTE_DEVICE
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{
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/**
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* The field specifies that the parent object for the base remote
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* device is the base object itself.
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*/
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SCI_BASE_OBJECT_T parent;
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/**
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* This field contains the information for the base remote device state
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* machine.
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*/
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SCI_BASE_STATE_MACHINE_T state_machine;
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#ifdef SCI_LOGGING
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/**
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* This field contains the state machine observer for the state machine.
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*/
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SCI_BASE_STATE_MACHINE_LOGGER_T state_machine_logger;
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#endif // SCI_LOGGING
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} SCI_BASE_REMOTE_DEVICE_T;
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typedef SCI_STATUS (*SCI_BASE_REMOTE_DEVICE_HANDLER_T)(
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SCI_BASE_REMOTE_DEVICE_T *
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);
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typedef SCI_STATUS (*SCI_BASE_REMOTE_DEVICE_REQUEST_HANDLER_T)(
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SCI_BASE_REMOTE_DEVICE_T *,
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struct SCI_BASE_REQUEST *
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);
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typedef SCI_STATUS (*SCI_BASE_REMOTE_DEVICE_HIGH_PRIORITY_REQUEST_COMPLETE_HANDLER_T)(
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SCI_BASE_REMOTE_DEVICE_T *,
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struct SCI_BASE_REQUEST *,
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void *,
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SCI_IO_STATUS
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);
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/**
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* @struct SCI_BASE_CONTROLLER_STATE_HANDLER
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*
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* @brief This structure contains all of the state handler methods common to
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* base remote device state machines. Handler methods provide the ability
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* to change the behavior for user requests or transitions depending
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* on the state the machine is in.
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*/
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typedef struct SCI_BASE_REMOTE_DEVICE_STATE_HANDLER
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{
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/**
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* The start_handler specifies the method invoked when a user attempts to
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* start a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_HANDLER_T start_handler;
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/**
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* The stop_handler specifies the method invoked when a user attempts to
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* stop a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_HANDLER_T stop_handler;
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/**
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* The fail_handler specifies the method invoked when a remote device
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* failure has occurred. A failure may be due to an inability to
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* initialize/configure the device.
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*/
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SCI_BASE_REMOTE_DEVICE_HANDLER_T fail_handler;
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/**
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* The destruct_handler specifies the method invoked when attempting to
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* destruct a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_HANDLER_T destruct_handler;
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/**
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* The reset handler specifies the method invloked when requesting to reset a
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* remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_HANDLER_T reset_handler;
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/**
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* The reset complete handler specifies the method invloked when reporting
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* that a reset has completed to the remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_HANDLER_T reset_complete_handler;
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/**
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* The start_io_handler specifies the method invoked when a user
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* attempts to start an IO request for a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_REQUEST_HANDLER_T start_io_handler;
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/**
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* The complete_io_handler specifies the method invoked when a user
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* attempts to complete an IO request for a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_REQUEST_HANDLER_T complete_io_handler;
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/**
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* The continue_io_handler specifies the method invoked when a user
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* attempts to continue an IO request for a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_REQUEST_HANDLER_T continue_io_handler;
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/**
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* The start_task_handler specifies the method invoked when a user
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* attempts to start a task management request for a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_REQUEST_HANDLER_T start_task_handler;
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/**
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* The complete_task_handler specifies the method invoked when a user
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* attempts to complete a task management request for a remote device.
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*/
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SCI_BASE_REMOTE_DEVICE_REQUEST_HANDLER_T complete_task_handler;
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} SCI_BASE_REMOTE_DEVICE_STATE_HANDLER_T;
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/**
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* @brief Construct the base remote device
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*
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* @param[in] this_remote_device This parameter specifies the base remote
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* device to be constructed.
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* @param[in] logger This parameter specifies the logger associated with
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* this base remote device object.
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* @param[in] state_table This parameter specifies the table of state
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* definitions to be utilized for the remote device state machine.
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*
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* @return none
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*/
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void sci_base_remote_device_construct(
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SCI_BASE_REMOTE_DEVICE_T * this_device,
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SCI_BASE_LOGGER_T * logger,
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SCI_BASE_STATE_T * state_table
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);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // _SCI_BASE_REMOTE_DEVICE_H_
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