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| Current File : //sys/dev/isci/scil/scif_sas_stp_task_request.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_stp_task_request.c 231689 2012-02-14 15:58:49Z jimharris $");
#include <dev/isci/scil/sati.h>
#include <dev/isci/scil/scif_sas_logger.h>
#include <dev/isci/scil/scif_sas_task_request.h>
#include <dev/isci/scil/scif_sas_controller.h>
#include <dev/isci/scil/scif_sas_remote_device.h>
#include <dev/isci/scil/scif_sas_stp_task_request.h>
#include <dev/isci/scil/scic_task_request.h>
#include <dev/isci/scil/scic_controller.h>
/**
* @brief This method provides SATA/STP STARTED state specific handling for
* when the user attempts to complete the supplied IO request.
* It will perform data/response translation and free NCQ tags
* if necessary.
*
* @param[in] io_request This parameter specifies the IO request object
* to be started.
*
* @return This method returns a value indicating if the IO request was
* successfully completed or not.
*/
static
SCI_STATUS scif_sas_stp_core_cb_task_request_complete_handler(
SCIF_SAS_CONTROLLER_T * fw_controller,
SCIF_SAS_REMOTE_DEVICE_T * fw_device,
SCIF_SAS_REQUEST_T * fw_request,
SCI_STATUS * completion_status
)
{
#if !defined(DISABLE_SATI_TASK_MANAGEMENT)
SCIF_SAS_TASK_REQUEST_T * fw_task = (SCIF_SAS_TASK_REQUEST_T *) fw_request;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_controller),
SCIF_LOG_OBJECT_TASK_MANAGEMENT,
"scif_sas_stp_core_cb_task_request_complete_handler(0x%x, 0x%x, 0x%x, 0x%x) enter\n",
fw_controller, fw_device, fw_request, *completion_status
));
// Translating the response is only necessary if some sort of error
// occurred resulting in having the error bit set in the ATA status
// register and values to decode in the ATA error register.
if ( (*completion_status == SCI_SUCCESS)
|| (*completion_status == SCI_FAILURE_IO_RESPONSE_VALID) )
{
SATI_STATUS sati_status = sati_translate_task_response(
&fw_task->parent.stp.sequence,
fw_task,
fw_task
);
if (sati_status == SATI_COMPLETE)
*completion_status = SCI_SUCCESS;
else if (sati_status == SATI_FAILURE_CHECK_RESPONSE_DATA)
*completion_status = SCI_FAILURE_IO_RESPONSE_VALID;
else if (sati_status == SATI_SEQUENCE_INCOMPLETE)
{
// The translation indicates that additional SATA requests are
// necessary to finish the original SCSI request. As a result,
// do not complete the IO and begin the next stage of the
// translation.
/// @todo multiple ATA commands are required, but not supported yet.
return SCI_FAILURE;
}
else
{
// Something unexpected occurred during translation. Fail the
// IO request to the user.
*completion_status = SCI_FAILURE;
}
}
else //A stp task request sometimes fails.
{
if (scif_sas_task_request_get_function(fw_task) == SCI_SAS_ABORT_TASK_SET)
{
scif_sas_stp_task_request_abort_task_set_failure_handler(
fw_device, fw_task);
}
}
return SCI_SUCCESS;
#else // !defined(DISABLE_SATI_TASK_MANAGEMENT)
return SCI_FAILURE;
#endif // !defined(DISABLE_SATI_TASK_MANAGEMENT)
}
/**
* @file
*
* @brief This file contains the method implementations for the
* SCIF_SAS_STP_TASK_REQUEST object. The contents will implement
* SATA/STP specific functionality.
*/
SCI_STATUS scif_sas_stp_task_request_construct(
SCIF_SAS_TASK_REQUEST_T * fw_task
)
{
SCI_STATUS sci_status = SCI_FAILURE;
#if !defined(DISABLE_SATI_TASK_MANAGEMENT)
SATI_STATUS sati_status;
SCIF_SAS_REMOTE_DEVICE_T * fw_device = fw_task->parent.device;
SCIF_LOG_TRACE((
sci_base_object_get_logger(fw_task),
SCIF_LOG_OBJECT_TASK_MANAGEMENT,
"scif_sas_stp_task_request_construct(0x%x) enter\n",
fw_task
));
// The translator will indirectly invoke core methods to set the fields
// of the ATA register FIS inside of this method.
sati_status = sati_translate_task_management(
&fw_task->parent.stp.sequence,
&fw_device->protocol_device.stp_device.sati_device,
fw_task,
fw_task
);
if (sati_status == SATI_SUCCESS)
{
sci_status = scic_task_request_construct_sata(fw_task->parent.core_object);
//fw_task->parent.state_handlers = &stp_io_request_constructed_handlers;
fw_task->parent.protocol_complete_handler =
scif_sas_stp_core_cb_task_request_complete_handler;
}
else
{
SCIF_LOG_ERROR((
sci_base_object_get_logger(fw_task),
SCIF_LOG_OBJECT_TASK_MANAGEMENT,
"Task 0x%x received unexpected SAT translation failure 0x%x\n",
fw_task, sati_status
));
}
#endif // !defined(DISABLE_SATI_TASK_MANAGEMENT)
return sci_status;
}
/**
* @brief This method provides handling for failed stp TASK MANAGEMENT
* request.
*
* @param[in] fw_device This parameter specifies the target device the
* task management request towards to.
* @param[in] fw_request This parameter specifies the failed task management
* request.
* @param[in] completion_status This parameter sprecifies the completion
* status of the task management request's core status.
*
* @return None.
*/
void scif_sas_stp_task_request_abort_task_set_failure_handler(
SCIF_SAS_REMOTE_DEVICE_T * fw_device,
SCIF_SAS_TASK_REQUEST_T * fw_task
)
{
#if !defined(DISABLE_SATI_TASK_MANAGEMENT)
SCIF_SAS_DOMAIN_T * fw_domain = fw_device->domain;
SCI_FAST_LIST_ELEMENT_T * pending_request_element;
SCIF_SAS_REQUEST_T * pending_request = NULL;
pending_request_element = fw_domain->request_list.list_head;
// Cycle through the list of IO requests. search all the
// outstanding IOs with "waiting for abort task set" flag,
// completes them now.
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 )
{
//In case the pending_request is still in the middle of aborting.
//abort it again to the core.
SCI_STATUS abort_status;
//Reset the flag now since we are process the read log ext command now.
pending_request->is_waiting_for_abort_task_set = FALSE;
abort_status = scic_controller_terminate_request(
fw_domain->controller->core_object,
fw_device->core_object,
pending_request->core_object
);
if (abort_status == SCI_FAILURE_INVALID_STATE)
{
//the request must have not be in aborting state anymore, complete it now.
scif_cb_io_request_complete(
fw_domain->controller,
fw_device,
pending_request,
SCI_IO_FAILURE_TERMINATED
);
}
//otherwise, the abort succeeded. Since the waiting flag is cleared,
//the pending request will be completed later.
}
}
#endif //#if !defined(DISABLE_SATI_TASK_MANAGEMENT)
}