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/*-
* 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.
*
* 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.
*
* $FreeBSD: release/9.1.0/sys/dev/isci/scil/sci_base_controller.h 231689 2012-02-14 15:58:49Z jimharris $
*/
#ifndef _SCI_BASE_CONTROLLER_H_
#define _SCI_BASE_CONTROLLER_H_
/**
* @file
*
* @brief This file contains all of the structures, constants, and methods
* common to all controller object definitions.
*/
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#include <dev/isci/scil/intel_sas.h>
#include <dev/isci/scil/sci_controller_constants.h>
#include <dev/isci/scil/sci_base_object.h>
#include <dev/isci/scil/sci_base_state.h>
#include <dev/isci/scil/sci_base_logger.h>
#include <dev/isci/scil/sci_base_memory_descriptor_list.h>
#include <dev/isci/scil/sci_base_state_machine.h>
#include <dev/isci/scil/sci_base_state_machine_logger.h>
/**
* @enum SCI_BASE_CONTROLLER_STATES
*
* @brief This enumeration depicts all the states for the common controller
* state machine.
*/
typedef enum _SCI_BASE_CONTROLLER_STATES
{
/**
* Simply the initial state for the base controller state machine.
*/
SCI_BASE_CONTROLLER_STATE_INITIAL = 0,
/**
* This state indicates that the controller is reset. The memory for
* the controller is in it's initial state, but the controller requires
* initialization.
* This state is entered from the INITIAL state.
* This state is entered from the RESETTING state.
*/
SCI_BASE_CONTROLLER_STATE_RESET,
/**
* This state is typically an action state that indicates the controller
* is in the process of initialization. In this state no new IO operations
* are permitted.
* This state is entered from the RESET state.
*/
SCI_BASE_CONTROLLER_STATE_INITIALIZING,
/**
* This state indicates that the controller has been successfully
* initialized. In this state no new IO operations are permitted.
* This state is entered from the INITIALIZING state.
*/
SCI_BASE_CONTROLLER_STATE_INITIALIZED,
/**
* This state indicates the the controller is in the process of becoming
* ready (i.e. starting). In this state no new IO operations are permitted.
* This state is entered from the INITIALIZED state.
*/
SCI_BASE_CONTROLLER_STATE_STARTING,
/**
* This state indicates the controller is now ready. Thus, the user
* is able to perform IO operations on the controller.
* This state is entered from the STARTING state.
*/
SCI_BASE_CONTROLLER_STATE_READY,
/**
* This state is typically an action state that indicates the controller
* is in the process of resetting. Thus, the user is unable to perform
* IO operations on the controller. A reset is considered destructive in
* most cases.
* This state is entered from the READY state.
* This state is entered from the FAILED state.
* This state is entered from the STOPPED state.
*/
SCI_BASE_CONTROLLER_STATE_RESETTING,
/**
* This state indicates that the controller is in the process of stopping.
* In this state no new IO operations are permitted, but existing IO
* operations are allowed to complete.
* This state is entered from the READY state.
*/
SCI_BASE_CONTROLLER_STATE_STOPPING,
/**
* This state indicates that the controller has successfully been stopped.
* In this state no new IO operations are permitted.
* This state is entered from the STOPPING state.
*/
SCI_BASE_CONTROLLER_STATE_STOPPED,
/**
* This state indicates that the controller could not successfully be
* initialized. In this state no new IO operations are permitted.
* This state is entered from the INITIALIZING state.
* This state is entered from the STARTING state.
* This state is entered from the STOPPING state.
* This state is entered from the RESETTING state.
*/
SCI_BASE_CONTROLLER_STATE_FAILED,
SCI_BASE_CONTROLLER_MAX_STATES
} SCI_BASE_CONTROLLER_STATES;
/**
* @struct SCI_BASE_CONTROLLER
*
* @brief The base controller object abstracts the fields common to all
* SCI controller objects.
*/
typedef struct SCI_BASE_CONTROLLER
{
/**
* The field specifies that the parent object for the base controller
* is the base object itself.
*/
SCI_BASE_OBJECT_T parent;
/**
* This field points to the memory descriptor list associated with this
* controller. The MDL indicates the memory requirements necessary for
* this controller object.
*/
SCI_BASE_MEMORY_DESCRIPTOR_LIST_T mdl;
/**
* This field records the fact that the controller has encountered a fatal memory
* error and controller must stay in failed state.
*/
U8 error;
/**
* This field contains the information for the base controller state
* machine.
*/
SCI_BASE_STATE_MACHINE_T state_machine;
#ifdef SCI_LOGGING
SCI_BASE_STATE_MACHINE_LOGGER_T state_machine_logger;
#endif // SCI_LOGGING
} SCI_BASE_CONTROLLER_T;
// Forward declarations
struct SCI_BASE_REMOTE_DEVICE;
struct SCI_BASE_REQUEST;
typedef SCI_STATUS (*SCI_BASE_CONTROLLER_HANDLER_T)(
SCI_BASE_CONTROLLER_T *
);
typedef SCI_STATUS (*SCI_BASE_CONTROLLER_TIMED_HANDLER_T)(
SCI_BASE_CONTROLLER_T *,
U32
);
typedef SCI_STATUS (*SCI_BASE_CONTROLLER_REQUEST_HANDLER_T)(
SCI_BASE_CONTROLLER_T *,
struct SCI_BASE_REMOTE_DEVICE *,
struct SCI_BASE_REQUEST *
);
typedef SCI_STATUS (*SCI_BASE_CONTROLLER_START_REQUEST_HANDLER_T)(
SCI_BASE_CONTROLLER_T *,
struct SCI_BASE_REMOTE_DEVICE *,
struct SCI_BASE_REQUEST *,
U16
);
/**
* @struct SCI_BASE_CONTROLLER_STATE_HANDLER
*
* @brief This structure contains all of the state handler methods common to
* base controller state machines. Handler methods provide the ability
* to change the behavior for user requests or transitions depending
* on the state the machine is in.
*/
typedef struct SCI_BASE_CONTROLLER_STATE_HANDLER
{
/**
* The start_handler specifies the method invoked when a user attempts to
* start a controller.
*/
SCI_BASE_CONTROLLER_TIMED_HANDLER_T start_handler;
/**
* The stop_handler specifies the method invoked when a user attempts to
* stop a controller.
*/
SCI_BASE_CONTROLLER_TIMED_HANDLER_T stop_handler;
/**
* The reset_handler specifies the method invoked when a user attempts to
* reset a controller.
*/
SCI_BASE_CONTROLLER_HANDLER_T reset_handler;
/**
* The initialize_handler specifies the method invoked when a user
* attempts to initialize a controller.
*/
SCI_BASE_CONTROLLER_HANDLER_T initialize_handler;
/**
* The start_io_handler specifies the method invoked when a user
* attempts to start an IO request for a controller.
*/
SCI_BASE_CONTROLLER_START_REQUEST_HANDLER_T start_io_handler;
/**
* The start_internal_request_handler specifies the method invoked when a user
* attempts to start an internal request for a controller.
*/
SCI_BASE_CONTROLLER_START_REQUEST_HANDLER_T start_high_priority_io_handler;
/**
* The complete_io_handler specifies the method invoked when a user
* attempts to complete an IO request for a controller.
*/
SCI_BASE_CONTROLLER_REQUEST_HANDLER_T complete_io_handler;
/**
* The complete_high_priority_io_handler specifies the method invoked when a user
* attempts to complete a high priority IO request for a controller.
*/
SCI_BASE_CONTROLLER_REQUEST_HANDLER_T complete_high_priority_io_handler;
/**
* The continue_io_handler specifies the method invoked when a user
* attempts to continue an IO request for a controller.
*/
SCI_BASE_CONTROLLER_REQUEST_HANDLER_T continue_io_handler;
/**
* The start_task_handler specifies the method invoked when a user
* attempts to start a task management request for a controller.
*/
SCI_BASE_CONTROLLER_START_REQUEST_HANDLER_T start_task_handler;
/**
* The complete_task_handler specifies the method invoked when a user
* attempts to complete a task management request for a controller.
*/
SCI_BASE_CONTROLLER_REQUEST_HANDLER_T complete_task_handler;
} SCI_BASE_CONTROLLER_STATE_HANDLER_T;
/**
* @brief Construct the base controller
*
* @param[in] this_controller This parameter specifies the base controller
* to be constructed.
* @param[in] logger This parameter specifies the logger associated with
* this base controller object.
* @param[in] state_table This parameter specifies the table of state
* definitions to be utilized for the controller state machine.
* @param[in] mde_array This parameter specifies the array of memory
* descriptor entries to be managed by this list.
* @param[in] mde_array_length This parameter specifies the size of the
* array of entries.
* @param[in] next_mdl This parameter specifies a subsequent MDL object
* to be managed by this MDL object.
* @param[in] oem_parameters This parameter specifies the original
* equipment manufacturer parameters to be utilized by this
* controller object.
*
* @return none
*/
void sci_base_controller_construct(
SCI_BASE_CONTROLLER_T * this_controller,
SCI_BASE_LOGGER_T * logger,
SCI_BASE_STATE_T * state_table,
SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mdes,
U32 mde_count,
SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T next_mdl
);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // _SCI_BASE_CONTROLLER_H_