/*- * 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 __FBSDID("$FreeBSD$"); /** * @file * * @brief This file contains the task management substate handlers for the * SCIC_SDS_IO_REQUEST object. * This file contains the enter/exit methods associated with each of * the task management raw request states. For more information on the * task management request state machine please refer to * scic_sds_io_request.h */ #include #include #include #include #include #include #include #include /** * @brief This method processes the completions transport layer (TL) status * to determine if the RAW task management frame was sent successfully. * If the raw frame was sent successfully, then the state for the * task request transitions to waiting for a response frame. * * @param[in] this_request This parameter specifies the request for which * the TC completion was received. * @param[in] completion_code This parameter indicates the completion status * information for the TC. * * @return Indicate if the tc completion handler was successful. * @retval SCI_SUCCESS currently this method always returns success. */ static SCI_STATUS scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler( SCIC_SDS_REQUEST_T * this_request, U32 completion_code ) { SCIC_LOG_TRACE(( sci_base_object_get_logger(this_request), SCIC_LOG_OBJECT_TASK_MANAGEMENT, "scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler(0x%x, 0x%x) enter\n", this_request, completion_code )); switch (SCU_GET_COMPLETION_TL_STATUS(completion_code)) { case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_GOOD): scic_sds_request_set_status( this_request, SCU_TASK_DONE_GOOD, SCI_SUCCESS ); sci_base_state_machine_change_state( &this_request->started_substate_machine, SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE ); break; case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_ACK_NAK_TO): // Currently, the decision is to simply allow the task request to // timeout if the task IU wasn't received successfully. // There is a potential for receiving multiple task responses if we // decide to send the task IU again. SCIC_LOG_WARNING(( sci_base_object_get_logger(this_request), SCIC_LOG_OBJECT_TASK_MANAGEMENT, "TaskRequest:0x%x CompletionCode:%x - ACK/NAK timeout\n", this_request, completion_code )); sci_base_state_machine_change_state( &this_request->started_substate_machine, SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE ); break; default: // All other completion status cause the IO to be complete. If a NAK // was received, then it is up to the user to retry the request. scic_sds_request_set_status( this_request, SCU_NORMALIZE_COMPLETION_STATUS(completion_code), SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR ); sci_base_state_machine_change_state( &this_request->parent.state_machine, SCI_BASE_REQUEST_STATE_COMPLETED ); break; } return SCI_SUCCESS; } /** * @brief This method is responsible for processing a terminate/abort * request for this TC while the request is waiting for the task * management response unsolicited frame. * * @param[in] this_request This parameter specifies the request for which * the termination was requested. * * @return This method returns an indication as to whether the abort * request was successfully handled. * * @todo need to update to ensure the received UF doesn't cause damage * to subsequent requests (i.e. put the extended tag in a holding * pattern for this particular device). */ static SCI_STATUS scic_sds_ssp_task_request_await_tc_response_abort_handler( SCI_BASE_REQUEST_T * request ) { SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *)request; SCIC_LOG_TRACE(( sci_base_object_get_logger(this_request), SCIC_LOG_OBJECT_TASK_MANAGEMENT, "scic_sds_ssp_task_request_await_tc_response_abort_handler(0x%x) enter\n", this_request )); sci_base_state_machine_change_state( &this_request->parent.state_machine, SCI_BASE_REQUEST_STATE_ABORTING ); sci_base_state_machine_change_state( &this_request->parent.state_machine, SCI_BASE_REQUEST_STATE_COMPLETED ); return SCI_SUCCESS; } /** * @brief This method processes an unsolicited frame while the task mgmt * request is waiting for a response frame. It will copy the * response data, release the unsolicited frame, and transition * the request to the SCI_BASE_REQUEST_STATE_COMPLETED state. * * @param[in] this_request This parameter specifies the request for which * the unsolicited frame was received. * @param[in] frame_index This parameter indicates the unsolicited frame * index that should contain the response. * * @return This method returns an indication of whether the TC response * frame was handled successfully or not. * @retval SCI_SUCCESS Currently this value is always returned and indicates * successful processing of the TC response. * * @todo Should probably update to check frame type and make sure it is * a response frame. */ static SCI_STATUS scic_sds_ssp_task_request_await_tc_response_frame_handler( SCIC_SDS_REQUEST_T * this_request, U32 frame_index ) { // Save off the controller, so that we do not touch the request after it // is completed. SCIC_SDS_CONTROLLER_T * owning_controller = this_request->owning_controller; SCIC_LOG_TRACE(( sci_base_object_get_logger(this_request), SCIC_LOG_OBJECT_TASK_MANAGEMENT, "scic_sds_ssp_task_request_await_tc_response_frame_handler(0x%x, 0x%x) enter\n", this_request, frame_index )); scic_sds_io_request_copy_response(this_request); sci_base_state_machine_change_state( &this_request->parent.state_machine, SCI_BASE_REQUEST_STATE_COMPLETED ); scic_sds_controller_release_frame( owning_controller, frame_index ); return SCI_SUCCESS; } SCIC_SDS_IO_REQUEST_STATE_HANDLER_T scic_sds_ssp_task_request_started_substate_handler_table [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_MAX_SUBSTATES] = { // SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION { { scic_sds_request_default_start_handler, scic_sds_request_started_state_abort_handler, scic_sds_request_default_complete_handler, scic_sds_request_default_destruct_handler }, scic_sds_ssp_task_request_await_tc_completion_tc_completion_handler, scic_sds_request_default_event_handler, scic_sds_request_default_frame_handler }, // SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE { { scic_sds_request_default_start_handler, scic_sds_ssp_task_request_await_tc_response_abort_handler, scic_sds_request_default_complete_handler, scic_sds_request_default_destruct_handler }, scic_sds_request_default_tc_completion_handler, scic_sds_request_default_event_handler, scic_sds_ssp_task_request_await_tc_response_frame_handler } }; /** * @brief This method performs the actions required when entering the * SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION * sub-state. This includes setting the IO request state handlers * for this sub-state. * * @param[in] object This parameter specifies the request object for which * the sub-state change is occuring. * * @return none. */ static void scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter( SCI_BASE_OBJECT_T *object ) { SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *)object; SET_STATE_HANDLER( this_request, scic_sds_ssp_task_request_started_substate_handler_table, SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION ); } /** * @brief This method performs the actions required when entering the * SCIC_SDS_IO_REQUEST_STARTED_SUBSTATE_AWAIT_TC_RESPONSE sub-state. * This includes setting the IO request state handlers for this * sub-state. * * @param[in] object This parameter specifies the request object for which * the sub-state change is occuring. * * @return none. */ static void scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter( SCI_BASE_OBJECT_T *object ) { SCIC_SDS_REQUEST_T *this_request = (SCIC_SDS_REQUEST_T *)object; SET_STATE_HANDLER( this_request, scic_sds_ssp_task_request_started_substate_handler_table, SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE ); } SCI_BASE_STATE_T scic_sds_io_request_started_task_mgmt_substate_table [SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_MAX_SUBSTATES] = { { SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_COMPLETION, scic_sds_io_request_started_task_mgmt_await_tc_completion_substate_enter, NULL }, { SCIC_SDS_IO_REQUEST_STARTED_TASK_MGMT_SUBSTATE_AWAIT_TC_RESPONSE, scic_sds_io_request_started_task_mgmt_await_task_response_substate_enter, NULL } };