diff options
Diffstat (limited to 'drivers/scsi/isci/core/scic_sds_smp_remote_device.c')
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_smp_remote_device.c | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/drivers/scsi/isci/core/scic_sds_smp_remote_device.c b/drivers/scsi/isci/core/scic_sds_smp_remote_device.c new file mode 100644 index 00000000000..7cf78d3212c --- /dev/null +++ b/drivers/scsi/isci/core/scic_sds_smp_remote_device.c @@ -0,0 +1,410 @@ +/* + * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +/** + * This file contains This file contains the ready substate handlers for a SMP + * device. + * + * + */ + +#include "sci_environment.h" +#include "scic_user_callback.h" +#include "scic_sds_remote_device.h" +#include "scic_sds_controller.h" +#include "scic_sds_port.h" +#include "scic_sds_request.h" +#include "scu_event_codes.h" +#include "scu_task_context.h" + + +/* + * ***************************************************************************** + * * SMP REMOTE DEVICE READY IDLE SUBSTATE HANDLERS + * ***************************************************************************** */ + +/** + * + * @[in]: device The device the io is sent to. + * @[in]: request The io to start. + * + * This method will handle the start io operation for a SMP device that is in + * the idle state. enum sci_status + */ +static enum sci_status scic_sds_smp_remote_device_ready_idle_substate_start_io_handler( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + enum sci_status status; + struct scic_sds_remote_device *this_device = (struct scic_sds_remote_device *)device; + struct scic_sds_request *io_request = (struct scic_sds_request *)request; + + /* Will the port allow the io request to start? */ + status = this_device->owning_port->state_handlers->start_io_handler( + this_device->owning_port, + this_device, + io_request + ); + + if (status == SCI_SUCCESS) { + status = + scic_sds_remote_node_context_start_io(this_device->rnc, io_request); + + if (status == SCI_SUCCESS) { + status = scic_sds_request_start(io_request); + } + + if (status == SCI_SUCCESS) { + this_device->working_request = io_request; + + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD + ); + } + + scic_sds_remote_device_start_request(this_device, io_request, status); + } + + return status; +} + + +/* + * ****************************************************************************** + * * SMP REMOTE DEVICE READY SUBSTATE CMD HANDLERS + * ****************************************************************************** */ +/** + * + * @device: This is the device object that is receiving the IO. + * @request: The io to start. + * + * This device is already handling a command it can not accept new commands + * until this one is complete. enum sci_status + */ +static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + return SCI_FAILURE_INVALID_STATE; +} + + +/** + * this is the complete_io_handler for smp device at ready cmd substate. + * @device: This is the device object that is receiving the IO. + * @request: The io to start. + * + * enum sci_status + */ +static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_complete_io_handler( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + enum sci_status status; + struct scic_sds_remote_device *this_device; + struct scic_sds_request *the_request; + + this_device = (struct scic_sds_remote_device *)device; + the_request = (struct scic_sds_request *)request; + + status = scic_sds_io_request_complete(the_request); + + if (status == SCI_SUCCESS) { + status = scic_sds_port_complete_io( + this_device->owning_port, this_device, the_request); + + if (status == SCI_SUCCESS) { + scic_sds_remote_device_decrement_request_count(this_device); + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE + ); + } else + dev_err(scirdev_to_dev(this_device), + "%s: SCIC SDS Remote Device 0x%p io request " + "0x%p could not be completd on the port 0x%p " + "failed with status %d.\n", + __func__, + this_device, + the_request, + this_device->owning_port, + status); + } + + return status; +} + +/** + * This is frame handler for smp device ready cmd substate. + * @this_device: This is the device object that is receiving the frame. + * @frame_index: The index for the frame received. + * + * enum sci_status + */ +static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_frame_handler( + struct scic_sds_remote_device *this_device, + u32 frame_index) +{ + enum sci_status status; + + /* + * / The device does not process any UF received from the hardware while + * / in this state. All unsolicited frames are forwarded to the io request + * / object. */ + status = scic_sds_io_request_frame_handler( + this_device->working_request, + frame_index + ); + + return status; +} + +/* --------------------------------------------------------------------------- */ + +struct scic_sds_remote_device_state_handler +scic_sds_smp_remote_device_ready_substate_handler_table[ + SCIC_SDS_SMP_REMOTE_DEVICE_READY_MAX_SUBSTATES] = +{ + /* SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE */ + { + { + scic_sds_remote_device_default_start_handler, + scic_sds_remote_device_ready_state_stop_handler, + scic_sds_remote_device_default_fail_handler, + scic_sds_remote_device_default_destruct_handler, + scic_sds_remote_device_default_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_smp_remote_device_ready_idle_substate_start_io_handler, + scic_sds_remote_device_default_complete_request_handler, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_remote_device_default_start_request_handler, + scic_sds_remote_device_default_complete_request_handler + }, + scic_sds_remote_device_default_suspend_handler, + scic_sds_remote_device_default_resume_handler, + scic_sds_remote_device_general_event_handler, + scic_sds_remote_device_default_frame_handler + }, + /* SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD */ + { + { + scic_sds_remote_device_default_start_handler, + scic_sds_remote_device_ready_state_stop_handler, + scic_sds_remote_device_default_fail_handler, + scic_sds_remote_device_default_destruct_handler, + scic_sds_remote_device_default_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler, + scic_sds_smp_remote_device_ready_cmd_substate_complete_io_handler, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_remote_device_default_start_request_handler, + scic_sds_remote_device_default_complete_request_handler + }, + scic_sds_remote_device_default_suspend_handler, + scic_sds_remote_device_default_resume_handler, + scic_sds_remote_device_general_event_handler, + scic_sds_smp_remote_device_ready_cmd_substate_frame_handler + } +}; +/* + * 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. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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. + */ + +/** + * This file contains the enter and exit functions for the + * struct scic_sds_remote_device ready substate machine. + * + * + */ + +#include "scic_remote_device.h" +#include "scic_user_callback.h" +#include "scic_sds_remote_device.h" +#include "scic_sds_controller.h" +#include "scic_sds_port.h" +#include "sci_util.h" +#include "sci_environment.h" + +/** + * + * @object: This is the struct sci_base_object which is cast into a + * struct scic_sds_remote_device. + * + * This is the SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE enter method. + * This method sets the ready cmd substate handlers and reports the device as + * ready. none + */ +static void scic_sds_smp_remote_device_ready_idle_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_remote_device *this_device = (struct scic_sds_remote_device *)object; + + SET_STATE_HANDLER( + this_device, + scic_sds_smp_remote_device_ready_substate_handler_table, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE + ); + + scic_cb_remote_device_ready( + scic_sds_remote_device_get_controller(this_device), this_device); +} + +/** + * + * @object: This is the struct sci_base_object which is cast into a + * struct scic_sds_remote_device. + * + * This is the SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD enter method. This + * method sets the remote device objects ready cmd substate handlers, and + * notify core user that the device is not ready. none + */ +static void scic_sds_smp_remote_device_ready_cmd_substate_enter( + struct sci_base_object *object) +{ + struct scic_sds_remote_device *this_device = (struct scic_sds_remote_device *)object; + + BUG_ON(this_device->working_request == NULL); + + SET_STATE_HANDLER( + this_device, + scic_sds_smp_remote_device_ready_substate_handler_table, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD + ); + + scic_cb_remote_device_not_ready( + scic_sds_remote_device_get_controller(this_device), + this_device, + SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED + ); +} + +/** + * + * @object: This is the struct sci_base_object which is cast into a + * struct scic_sds_remote_device. + * + * This is the SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_CMD exit method. none + */ +static void scic_sds_smp_remote_device_ready_cmd_substate_exit( + struct sci_base_object *object) +{ + struct scic_sds_remote_device *this_device = (struct scic_sds_remote_device *)object; + + this_device->working_request = NULL; +} + +/* --------------------------------------------------------------------------- */ + +const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[] = { + [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { + .enter_state = scic_sds_smp_remote_device_ready_idle_substate_enter, + }, + [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { + .enter_state = scic_sds_smp_remote_device_ready_cmd_substate_enter, + .exit_state = scic_sds_smp_remote_device_ready_cmd_substate_exit, + }, +}; |