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| Current File : //usr/src/sys/dev/isci/scil/scif_sas_remote_device_ready_substates.c |
/*-
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/isci/scil/scif_sas_remote_device_ready_substates.c 231689 2012-02-14 15:58:49Z jimharris $");
/**
* @file
*
* @brief This file contains the entrance and exit methods for the ready
* sub-state machine states (OPERATIONAL, TASK_MGMT).
*/
#include <dev/isci/scil/scif_sas_remote_device.h>
#include <dev/isci/scil/scif_sas_domain.h>
#include <dev/isci/scil/scif_sas_logger.h>
#include <dev/isci/scil/scif_sas_internal_io_request.h>
#include <dev/isci/scil/scif_sas_controller.h>
#include <dev/isci/scil/sci_controller.h>
//******************************************************************************
//* P R O T E C T E D M E T H O D S
//******************************************************************************
/**
* @brief This method implements the actions taken when entering the
* READY OPERATIONAL substate. This includes setting the state
* handler methods and issuing a scif_cb_remote_device_ready()
* notification to the user.
*
* @param[in] object This parameter specifies the base object for which
* the state transition is occurring. This is cast into a
* SCIF_SAS_REMOTE_DEVICE object in the method implementation.
*
* @return none
*/
static
void scif_sas_remote_device_ready_operational_substate_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIF_SAS_REMOTE_DEVICE_T * fw_device = (SCIF_SAS_REMOTE_DEVICE_T *)object;
SET_STATE_HANDLER(
fw_device,
scif_sas_remote_device_ready_substate_handler_table,
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL
);
SCIF_LOG_INFO((
sci_base_object_get_logger(fw_device),
SCIF_LOG_OBJECT_REMOTE_DEVICE | SCIF_LOG_OBJECT_REMOTE_DEVICE_CONFIG,
"Domain:0x%x Device:0x%x device ready\n",
fw_device->domain, fw_device
));
// Notify the user that the device has become ready.
scif_cb_remote_device_ready(
fw_device->domain->controller, fw_device->domain, fw_device
);
}
/**
* @brief This method implements the actions taken when exiting the
* READY OPERATIONAL substate. This method issues a
* scif_cb_remote_device_not_ready() notification to the framework
* user.
*
* @param[in] object This parameter specifies the base object for which
* the state transition is occurring. This is cast into a
* SCIF_SAS_REMOTE_DEVICE object in the method implementation.
*
* @return none
*/
static
void scif_sas_remote_device_ready_operational_substate_exit(
SCI_BASE_OBJECT_T *object
)
{
SCIF_SAS_REMOTE_DEVICE_T * fw_device = (SCIF_SAS_REMOTE_DEVICE_T *)object;
// Notify the user that the device has become ready.
scif_cb_remote_device_not_ready(
fw_device->domain->controller, fw_device->domain, fw_device
);
}
/**
* @brief This method implements the actions taken when entering the
* READY SUSPENDED substate. This includes setting the state
* handler methods.
*
* @param[in] object This parameter specifies the base object for which
* the state transition is occurring. This is cast into a
* SCIF_SAS_REMOTE_DEVICE object in the method implementation.
*
* @return none
*/
static
void scif_sas_remote_device_ready_suspended_substate_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIF_SAS_REMOTE_DEVICE_T * fw_device = (SCIF_SAS_REMOTE_DEVICE_T *)object;
SET_STATE_HANDLER(
fw_device,
scif_sas_remote_device_ready_substate_handler_table,
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED
);
}
/**
* @brief This method implements the actions taken when entering the
* READY TASK MGMT substate. This includes setting the state
* handler methods.
*
* @param[in] object This parameter specifies the base object for which
* the state transition is occurring. This is cast into a
* SCIF_SAS_REMOTE_DEVICE object in the method implementation.
*
* @return none
*/
static
void scif_sas_remote_device_ready_taskmgmt_substate_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIF_SAS_REMOTE_DEVICE_T * fw_device = (SCIF_SAS_REMOTE_DEVICE_T *)object;
SET_STATE_HANDLER(
fw_device,
scif_sas_remote_device_ready_substate_handler_table,
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_TASK_MGMT
);
}
/**
* @brief This method implements the actions taken when entering the
* READY NCQ ERROR substate. This includes setting the state
* handler methods.
*
* @param[in] object This parameter specifies the base object for which
* the state transition is occurring. This is cast into a
* SCIF_SAS_REMOTE_DEVICE object in the method implementation.
*
* @return none
*/
static
void scif_sas_remote_device_ready_ncq_error_substate_enter(
SCI_BASE_OBJECT_T *object
)
{
SCIF_SAS_REMOTE_DEVICE_T * fw_device = (SCIF_SAS_REMOTE_DEVICE_T *)object;
SCI_STATUS status = SCI_SUCCESS;
SCI_TASK_REQUEST_HANDLE_T handle;
SCIF_SAS_CONTROLLER_T * fw_controller = fw_device->domain->controller;
SCIF_SAS_TASK_REQUEST_T * fw_task_request;
SCIF_SAS_REQUEST_T * fw_request;
void * internal_task_memory;
SCIF_SAS_DOMAIN_T * fw_domain = fw_device->domain;
SCI_FAST_LIST_ELEMENT_T * pending_request_element;
SCIF_SAS_REQUEST_T * pending_request = NULL;
SET_STATE_HANDLER(
fw_device,
scif_sas_remote_device_ready_substate_handler_table,
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR
);
internal_task_memory = scif_sas_controller_allocate_internal_request(fw_controller);
ASSERT(internal_task_memory != NULL);
fw_task_request = (SCIF_SAS_TASK_REQUEST_T*)internal_task_memory;
fw_request = &fw_task_request->parent;
//construct the scif io request
status = scif_sas_internal_task_request_construct(
fw_controller,
fw_device,
SCI_CONTROLLER_INVALID_IO_TAG,
(void *)fw_task_request,
&handle,
SCI_SAS_ABORT_TASK_SET
);
pending_request_element = fw_domain->request_list.list_head;
// Cycle through the fast list of IO requests. Mark each request
// pending to this remote device so that they are not completed
// to the operating system when the request is terminated, but
// rather when the abort task set completes.
while (pending_request_element != NULL)
{
pending_request =
(SCIF_SAS_REQUEST_T*) sci_fast_list_get_object(pending_request_element);
// The current element may be deleted from the list becasue of
// IO completion so advance to the next element early
pending_request_element = sci_fast_list_get_next(pending_request_element);
if (pending_request->device == fw_device)
{
pending_request->is_waiting_for_abort_task_set = TRUE;
}
}
scif_controller_start_task(
fw_controller,
fw_device,
fw_request,
SCI_CONTROLLER_INVALID_IO_TAG
);
}
SCI_BASE_STATE_T scif_sas_remote_device_ready_substate_table
[SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_MAX_STATES] =
{
{
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL,
scif_sas_remote_device_ready_operational_substate_enter,
scif_sas_remote_device_ready_operational_substate_exit
},
{
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
scif_sas_remote_device_ready_suspended_substate_enter,
NULL
},
{
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_TASK_MGMT,
scif_sas_remote_device_ready_taskmgmt_substate_enter,
NULL
},
{
SCIF_SAS_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR,
scif_sas_remote_device_ready_ncq_error_substate_enter,
NULL
}
};