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
184 lines
6.8 KiB
C
184 lines
6.8 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 implementation of the SCIF_SAS_REQUEST
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* object. The SCIF_SAS_REQUEST object provides data and methods
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* that are common to both IO requests and task management requests.
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*/
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#include <dev/isci/scil/scic_controller.h>
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#include <dev/isci/scil/scif_sas_request.h>
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#include <dev/isci/scil/scif_sas_task_request.h>
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#include <dev/isci/scil/scif_sas_controller.h>
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#include <dev/isci/scil/scif_sas_domain.h>
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#include <dev/isci/scil/scif_sas_remote_device.h>
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#include <dev/isci/scil/scif_sas_logger.h>
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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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/**
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* @brief This method constructs the SCIF_SAS_REQUEST object.
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*
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* @param[in] fw_request This parameter specifies the request object to
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* be constructed.
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* @param[in] fw_device This parameter specifies the remote device object
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* to which this request is destined.
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* @param[in] logger This parameter specifies the logger associated with
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* this base request 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 request state machine.
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*
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* @return none
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*/
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void scif_sas_request_construct(
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SCIF_SAS_REQUEST_T * fw_request,
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SCIF_SAS_REMOTE_DEVICE_T * fw_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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{
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sci_base_request_construct(&fw_request->parent, logger, state_table);
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SCIF_LOG_TRACE((
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sci_base_object_get_logger(fw_request),
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SCIF_LOG_OBJECT_TASK_MANAGEMENT,
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"scif_sas_request_construct(0x%x, 0x%x, 0x%x, 0x%x) enter\n",
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fw_request, fw_device, logger, state_table
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));
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fw_request->device = fw_device;
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fw_request->is_internal = FALSE;
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fw_request->lun = 0;
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fw_request->terminate_requestor = NULL;
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fw_request->protocol_complete_handler = NULL;
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fw_request->is_high_priority = FALSE;
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fw_request->is_waiting_for_abort_task_set = FALSE;
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sci_fast_list_element_init(fw_request, &fw_request->list_element);
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}
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/**
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* @brief This method will request the SCI core to terminate the supplied
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* request.
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*
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* @param[in] fw_request This parameter specifies the request to be terminated.
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* @param[in] core_request This parameter specifies the core request (IO or
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* task) to be terminated.
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*
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* @return This method returns the status of the core termination operation.
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*/
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SCI_STATUS scif_sas_request_terminate_start(
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SCIF_SAS_REQUEST_T * fw_request,
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SCI_IO_REQUEST_HANDLE_T core_request
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)
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{
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SCIF_LOG_TRACE((
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sci_base_object_get_logger(fw_request),
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SCIF_LOG_OBJECT_TASK_MANAGEMENT,
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"scif_sas_request_terminate_start(0x%x) enter\n",
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fw_request
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));
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// Only increment the affected request count if this request is being
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// terminated at the behest of a task management request.
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if (fw_request->terminate_requestor != NULL)
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fw_request->terminate_requestor->affected_request_count++;
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return scic_controller_terminate_request(
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fw_request->device->domain->controller->core_object,
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fw_request->device->core_object,
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core_request
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);
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}
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/**
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* @brief This method will perform termination completion processing for
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* the supplied request. This includes updated the affected
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* request count, if a task management request is what generated
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* this termination. Also, this method will attempt to transition
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* to the READY OPERATIONAL state if this represents the last
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* affected request.
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*
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* @param[in] fw_request This parameter specifies the request for which to
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* perform termination completion processing.
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*
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* @return none
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*/
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void scif_sas_request_terminate_complete(
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SCIF_SAS_REQUEST_T * fw_request
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)
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{
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SCIF_LOG_TRACE((
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sci_base_object_get_logger(fw_request),
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SCIF_LOG_OBJECT_TASK_MANAGEMENT,
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"scif_sas_request_terminate_complete(0x%x) enter\n",
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fw_request
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));
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// For requests that were terminated due to a task management request,
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// check to see if the task management request has completed.
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if (fw_request->terminate_requestor != NULL)
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scif_sas_task_request_operation_complete(fw_request->terminate_requestor);
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}
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