diff options
Diffstat (limited to 'drivers/scsi/isci/core/scic_sds_stp_remote_device.c')
| -rw-r--r-- | drivers/scsi/isci/core/scic_sds_stp_remote_device.c | 975 |
1 files changed, 975 insertions, 0 deletions
diff --git a/drivers/scsi/isci/core/scic_sds_stp_remote_device.c b/drivers/scsi/isci/core/scic_sds_stp_remote_device.c new file mode 100644 index 000000000000..abe8f331a15c --- /dev/null +++ b/drivers/scsi/isci/core/scic_sds_stp_remote_device.c @@ -0,0 +1,975 @@ +/* + * 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 ready substate handlers for an STP device. + * + * + */ + +#include "intel_sat.h" +#include "intel_ata.h" +#include "intel_sata.h" +#include "sci_environment.h" +#include "scic_remote_device.h" +#include "scic_user_callback.h" +#include "scic_sds_controller.h" +#include "scic_sds_port.h" +#include "scic_sds_remote_device.h" +#include "scic_sds_request.h" +#include "scu_event_codes.h" + +/** + * This method will perform the STP request completion processing common to IO + * requests and task requests of all types + * @device: This parameter specifies the device for which the request is being + * completed. + * @request: This parameter specifies the request being completed. + * + * This method returns an indication as to whether the request processing + * completed successfully. + */ +static enum sci_status scic_sds_stp_remote_device_complete_request( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + struct scic_sds_remote_device *this_device = (struct scic_sds_remote_device *)device; + struct scic_sds_request *the_request = (struct scic_sds_request *)request; + enum sci_status status; + + 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); + if (the_request->sci_status == SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED) { + /* + * This request causes hardware error, device needs to be Lun Reset. + * So here we force the state machine to IDLE state so the rest IOs + * can reach RNC state handler, these IOs will be completed by RNC with + * status of "DEVICE_RESET_REQUIRED", instead of "INVALID STATE". */ + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET + ); + } else if (scic_sds_remote_device_get_request_count(this_device) == 0) { + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE + ); + } + } + } + + if (status != SCI_SUCCESS) + dev_err(scirdev_to_dev(this_device), + "%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x " + "could not complete\n", + __func__, + this_device->owning_port, + this_device, + the_request, + status); + + return status; +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY COMMON SUBSTATE HANDLERS + * ***************************************************************************** */ + +/** + * This is the READY NCQ substate handler to start task management request. In + * this routine, we suspend and resume the RNC. + * @device: The target device a task management request towards to. + * @request: The task request. + * + * enum sci_status Always return SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS status to + * let controller_start_task_handler know that the controller can't post TC for + * task request yet, instead, when RNC gets resumed, a controller_continue_task + * callback will be called. + */ +static enum sci_status scic_sds_stp_remote_device_ready_substate_start_request_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 *this_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, + this_request + ); + + if (SCI_SUCCESS == status) { + status = + scic_sds_remote_node_context_start_task(this_device->rnc, this_request); + + if (SCI_SUCCESS == status) { + status = this_request->state_handlers->parent.start_handler(request); + } + + if (status == SCI_SUCCESS) { + /* + * / @note If the remote device state is not IDLE this will replace + * / the request that probably resulted in the task management + * / request. */ + this_device->working_request = this_request; + + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD + ); + + /* + * The remote node context must cleanup the TCi to NCQ mapping table. + * The only way to do this correctly is to either write to the TLCR + * register or to invalidate and repost the RNC. In either case the + * remote node context state machine will take the correct action when + * the remote node context is suspended and later resumed. */ + scic_sds_remote_node_context_suspend( + this_device->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL); + + scic_sds_remote_node_context_resume( + this_device->rnc, + (SCICS_SDS_REMOTE_NODE_CONTEXT_CALLBACK) + scic_sds_remote_device_continue_request, + this_device); + } + + scic_sds_remote_device_start_request(this_device, this_request, status); + + /* + * We need to let the controller start request handler know that it can't + * post TC yet. We will provide a callback function to post TC when RNC gets + * resumed. */ + return SCI_FAILURE_RESET_DEVICE_PARTIAL_SUCCESS; + } + + return status; +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY IDLE SUBSTATE HANDLERS + * ***************************************************************************** */ + +/** + * This method will handle the start io operation for a sata device that is in + * the command idle state. - Evalute the type of IO request to be started - + * If its an NCQ request change to NCQ substate - If its any other command + * change to the CMD substate + * @device: + * @request: + * + * If this is a softreset we may want to have a different substate. enum sci_status + */ +static enum sci_status scic_sds_stp_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 = io_request->state_handlers->parent.start_handler(request); + } + + if (status == SCI_SUCCESS) { + if ( + scic_cb_request_get_sat_protocol(io_request->user_request) + == SAT_PROTOCOL_FPDMA + ) { + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ + ); + } else { + this_device->working_request = io_request; + + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD + ); + } + } + + scic_sds_remote_device_start_request(this_device, io_request, status); + } + + return status; +} + + +/** + * + * @[in]: device The device received event. + * @[in]: event_code The event code. + * + * This method will handle the event for a sata device that is in the idle + * state. We pick up suspension events to handle specifically to this state. We + * resume the RNC right away. enum sci_status + */ +static enum sci_status scic_sds_stp_remote_device_ready_idle_substate_event_handler( + struct scic_sds_remote_device *this_device, + u32 event_code) +{ + enum sci_status status; + + status = scic_sds_remote_device_general_event_handler(this_device, event_code); + + if (status == SCI_SUCCESS) { + if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX + || scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX) { + status = scic_sds_remote_node_context_resume( + this_device->rnc, NULL, NULL); + } + } + + return status; +} + + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY NCQ SUBSTATE HANDLERS + * ***************************************************************************** */ + +static enum sci_status scic_sds_stp_remote_device_ready_ncq_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; + + if ( + scic_cb_request_get_sat_protocol(io_request->user_request) + == SAT_PROTOCOL_FPDMA + ) { + 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 = io_request->state_handlers->parent.start_handler(request); + } + + scic_sds_remote_device_start_request(this_device, io_request, status); + } + } else { + status = SCI_FAILURE_INVALID_STATE; + } + + return status; +} + + +/** + * This method will handle events received while the STP device is in the ready + * command substate. + * @this_device: This is the device object that is receiving the event. + * @event_code: The event code to process. + * + * enum sci_status + */ + +static enum sci_status scic_sds_stp_remote_device_ready_ncq_substate_frame_handler( + struct scic_sds_remote_device *this_device, + u32 frame_index) +{ + enum sci_status status; + struct sata_fis_header *frame_header; + + status = scic_sds_unsolicited_frame_control_get_header( + &(scic_sds_remote_device_get_controller(this_device)->uf_control), + frame_index, + (void **)&frame_header + ); + + if (status == SCI_SUCCESS) { + if ( + (frame_header->fis_type == SATA_FIS_TYPE_SETDEVBITS) + && (frame_header->status & ATA_STATUS_REG_ERROR_BIT) + ) { + this_device->not_ready_reason = + SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED; + + sci_base_state_machine_change_state( + &this_device->ready_substate_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR + ); + } else { + status = SCI_FAILURE; + } + + scic_sds_controller_release_frame( + scic_sds_remote_device_get_controller(this_device), frame_index + ); + } + + return status; +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY CMD SUBSTATE HANDLERS + * ***************************************************************************** */ + +/** + * This device is already handling a command it can not accept new commands + * until this one is complete. + * @device: + * @request: + * + * enum sci_status + */ +static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + return SCI_FAILURE_INVALID_STATE; +} + +static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler( + struct scic_sds_remote_device *this_device, + u32 suspend_type) +{ + enum sci_status status; + + status = scic_sds_remote_node_context_suspend( + this_device->rnc, suspend_type, NULL, NULL + ); + + return status; +} + +static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_frame_handler( + struct scic_sds_remote_device *this_device, + u32 frame_index) +{ + enum sci_status status; + + /* + * / The device doe 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; +} + + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY NCQ SUBSTATE HANDLERS + * ***************************************************************************** */ + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY NCQ ERROR SUBSTATE HANDLERS + * ***************************************************************************** */ + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY AWAIT RESET SUBSTATE HANDLERS + * ***************************************************************************** */ +static enum sci_status scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED; +} + + + +/** + * This method will perform the STP request (both io or task) completion + * processing for await reset state. + * @device: This parameter specifies the device for which the request is being + * completed. + * @request: This parameter specifies the request being completed. + * + * This method returns an indication as to whether the request processing + * completed successfully. + */ +static enum sci_status scic_sds_stp_remote_device_ready_await_reset_substate_complete_request_handler( + struct sci_base_remote_device *device, + struct sci_base_request *request) +{ + struct scic_sds_remote_device *this_device = (struct scic_sds_remote_device *)device; + struct scic_sds_request *the_request = (struct scic_sds_request *)request; + enum sci_status status; + + 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); + } + + if (status != SCI_SUCCESS) + dev_err(scirdev_to_dev(this_device), + "%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x " + "could not complete\n", + __func__, + this_device->owning_port, + this_device, + the_request, + status); + + return status; +} + +#if !defined(DISABLE_ATAPI) +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY ATAPI ERROR SUBSTATE HANDLERS + * ***************************************************************************** */ + +/** + * + * @[in]: device The device received event. + * @[in]: event_code The event code. + * + * This method will handle the event for a ATAPI device that is in the ATAPI + * ERROR state. We pick up suspension events to handle specifically to this + * state. We resume the RNC right away. We then complete the outstanding IO to + * this device. enum sci_status + */ +enum sci_status scic_sds_stp_remote_device_ready_atapi_error_substate_event_handler( + struct scic_sds_remote_device *this_device, + u32 event_code) +{ + enum sci_status status; + + status = scic_sds_remote_device_general_event_handler(this_device, event_code); + + if (status == SCI_SUCCESS) { + if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX + || scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX) { + status = scic_sds_remote_node_context_resume( + this_device->rnc, + this_device->working_request->state_handlers->parent.complete_handler, + (void *)this_device->working_request + ); + } + } + + return status; +} +#endif /* !defined(DISABLE_ATAPI) */ + +/* --------------------------------------------------------------------------- */ + +struct scic_sds_remote_device_state_handler +scic_sds_stp_remote_device_ready_substate_handler_table[ + SCIC_SDS_STP_REMOTE_DEVICE_READY_MAX_SUBSTATES] = +{ + /* SCIC_SDS_STP_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_ready_state_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_stp_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_stp_remote_device_ready_substate_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_stp_remote_device_ready_idle_substate_event_handler, + scic_sds_remote_device_default_frame_handler + }, + /* SCIC_SDS_STP_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_ready_state_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler, + scic_sds_stp_remote_device_complete_request, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_stp_remote_device_ready_substate_start_request_handler, + scic_sds_stp_remote_device_complete_request, + }, + scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler, + scic_sds_remote_device_default_resume_handler, + scic_sds_remote_device_general_event_handler, + scic_sds_stp_remote_device_ready_cmd_substate_frame_handler + }, + /* SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ */ + { + { + 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_ready_state_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_stp_remote_device_ready_ncq_substate_start_io_handler, + scic_sds_stp_remote_device_complete_request, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_stp_remote_device_ready_substate_start_request_handler, + scic_sds_stp_remote_device_complete_request + }, + scic_sds_remote_device_default_suspend_handler, + scic_sds_remote_device_default_resume_handler, + scic_sds_remote_device_general_event_handler, + scic_sds_stp_remote_device_ready_ncq_substate_frame_handler + }, + /* SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR */ + { + { + 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_ready_state_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_remote_device_default_start_request_handler, + scic_sds_stp_remote_device_complete_request, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_stp_remote_device_ready_substate_start_request_handler, + scic_sds_stp_remote_device_complete_request + }, + 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_general_frame_handler + }, +#if !defined(DISABLE_ATAPI) + /* SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR */ + { + { + 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_ready_state_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_remote_device_default_start_request_handler, + scic_sds_stp_remote_device_complete_request, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_stp_remote_device_ready_substate_start_request_handler, + scic_sds_stp_remote_device_complete_request + }, + scic_sds_remote_device_default_suspend_handler, + scic_sds_remote_device_default_resume_handler, + scic_sds_stp_remote_device_ready_atapi_error_substate_event_handler, + scic_sds_remote_device_general_frame_handler + }, +#endif + /* SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET */ + { + { + 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_ready_state_reset_handler, + scic_sds_remote_device_default_reset_complete_handler, + scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler, + scic_sds_stp_remote_device_ready_await_reset_substate_complete_request_handler, + scic_sds_remote_device_default_continue_request_handler, + scic_sds_stp_remote_device_ready_substate_start_request_handler, + scic_sds_stp_remote_device_complete_request + }, + 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_general_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. + */ + +#include "sci_base_state.h" +#include "scic_remote_device.h" +#include "scic_user_callback.h" +#include "scic_sds_controller.h" +#include "scic_sds_port.h" +#include "scic_sds_remote_device.h" +#include "sci_util.h" +#include "sci_environment.h" + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY SUBSTATE PRIVATE METHODS + * ***************************************************************************** */ + +static void scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler( + void *user_cookie) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)user_cookie; + + /* + * For NCQ operation we do not issue a + * scic_cb_remote_device_not_ready(). As a result, avoid sending + * the ready notification. */ + if (this_device->ready_substate_machine.previous_state_id + != SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ) { + scic_cb_remote_device_ready( + scic_sds_remote_device_get_controller(this_device), this_device + ); + } +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY IDLE SUBSTATE + * ***************************************************************************** */ + +/** + * + * @device: This is the SCI base object which is cast into a + * struct scic_sds_remote_device object. + * + */ +static void scic_sds_stp_remote_device_ready_idle_substate_enter( + struct sci_base_object *device) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)device; + + SET_STATE_HANDLER( + this_device, + scic_sds_stp_remote_device_ready_substate_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE + ); + + this_device->working_request = NULL; + + if (scic_sds_remote_node_context_is_ready(this_device->rnc)) { + /* + * Since the RNC is ready, it's alright to finish completion + * processing (e.g. signal the remote device is ready). */ + scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler( + this_device + ); + } else { + scic_sds_remote_node_context_resume( + this_device->rnc, + scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler, + this_device + ); + } +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY CMD SUBSTATE + * ***************************************************************************** */ + +/** + * + * @device: This is the SCI base object which is cast into a + * struct scic_sds_remote_device object. + * + */ +static void scic_sds_stp_remote_device_ready_cmd_substate_enter( + struct sci_base_object *device) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)device; + + BUG_ON(this_device->working_request == NULL); + + SET_STATE_HANDLER( + this_device, + scic_sds_stp_remote_device_ready_substate_handler_table, + SCIC_SDS_STP_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_SATA_REQUEST_STARTED + ); +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY NCQ SUBSTATE + * ***************************************************************************** */ + +/** + * + * @device: This is the SCI base object which is cast into a + * struct scic_sds_remote_device object. + * + */ +static void scic_sds_stp_remote_device_ready_ncq_substate_enter( + struct sci_base_object *device) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)device; + + SET_STATE_HANDLER( + this_device, + scic_sds_stp_remote_device_ready_substate_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ + ); +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY NCQ ERROR SUBSTATE + * ***************************************************************************** */ + +/** + * + * @device: This is the SCI base object which is cast into a + * struct scic_sds_remote_device object. + * + */ +static void scic_sds_stp_remote_device_ready_ncq_error_substate_enter( + struct sci_base_object *device) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)device; + + SET_STATE_HANDLER( + this_device, + scic_sds_stp_remote_device_ready_substate_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR + ); + + if (this_device->not_ready_reason == + SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED) { + scic_cb_remote_device_not_ready( + scic_sds_remote_device_get_controller(this_device), + this_device, + this_device->not_ready_reason + ); + } +} + +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY AWAIT RESET SUBSTATE + * ***************************************************************************** */ + +/** + * The enter routine to READY AWAIT RESET substate. + * @device: This is the SCI base object which is cast into a + * struct scic_sds_remote_device object. + * + */ +static void scic_sds_stp_remote_device_ready_await_reset_substate_enter( + struct sci_base_object *device) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)device; + + SET_STATE_HANDLER( + this_device, + scic_sds_stp_remote_device_ready_substate_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET + ); +} + +#if !defined(DISABLE_ATAPI) +/* + * ***************************************************************************** + * * STP REMOTE DEVICE READY ATAPI ERROR SUBSTATE + * ***************************************************************************** */ + +/** + * The enter routine to READY ATAPI ERROR substate. + * @device: This is the SCI base object which is cast into a + * struct scic_sds_remote_device object. + * + */ +void scic_sds_stp_remote_device_ready_atapi_error_substate_enter( + struct sci_base_object *device) +{ + struct scic_sds_remote_device *this_device; + + this_device = (struct scic_sds_remote_device *)device; + + SET_STATE_HANDLER( + this_device, + scic_sds_stp_remote_device_ready_substate_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR + ); +} +#endif /* !defined(DISABLE_ATAPI) */ + +/* --------------------------------------------------------------------------- */ + +const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[] = { + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { + .enter_state = scic_sds_stp_remote_device_ready_idle_substate_enter, + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { + .enter_state = scic_sds_stp_remote_device_ready_cmd_substate_enter, + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = { + .enter_state = scic_sds_stp_remote_device_ready_ncq_substate_enter, + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = { + .enter_state = scic_sds_stp_remote_device_ready_ncq_error_substate_enter, + }, +#if !defined(DISABLE_ATAPI) + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR] = { + .enter_state = scic_sds_stp_remote_device_ready_atapi_error_substate_enter, + }, +#endif + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = { + .enter_state = scic_sds_stp_remote_device_ready_await_reset_substate_enter, + }, +}; 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