Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/usb/uss820dci/@/dev/isci/scil/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/usb/uss820dci/@/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) }