diff options
| -rw-r--r-- | drivers/scsi/isci/remote_device.c | 168 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.h | 6 |
2 files changed, 85 insertions, 89 deletions
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index f4ba5be00c03..a6247675c5c7 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -433,22 +433,92 @@ enum sci_status scic_sds_remote_device_start_io(struct scic_sds_controller *scic return status; } -/** - * - * @controller: The controller that is completing the io request. - * @sci_dev: The remote device for which the complete io handling is being - * requested. - * @io_request: The io request that is being completed. - * - * This method invokes the remote device complete io handler. enum sci_status - */ -enum sci_status scic_sds_remote_device_complete_io( - struct scic_sds_controller *controller, - struct scic_sds_remote_device *sci_dev, - struct scic_sds_request *io_request) +static enum sci_status common_complete_io(struct scic_sds_port *sci_port, + struct scic_sds_remote_device *sci_dev, + struct scic_sds_request *sci_req) { - return sci_dev->state_handlers->complete_io_handler( - sci_dev, io_request); + enum sci_status status; + + status = scic_sds_request_complete(sci_req); + if (status != SCI_SUCCESS) + return status; + + status = scic_sds_port_complete_io(sci_port, sci_dev, sci_req); + if (status != SCI_SUCCESS) + return status; + + scic_sds_remote_device_decrement_request_count(sci_dev); + return status; +} + +enum sci_status scic_sds_remote_device_complete_io(struct scic_sds_controller *scic, + struct scic_sds_remote_device *sci_dev, + struct scic_sds_request *sci_req) +{ + struct sci_base_state_machine *sm = &sci_dev->state_machine; + enum scic_sds_remote_device_states state = sm->current_state_id; + struct scic_sds_port *sci_port = sci_dev->owning_port; + enum sci_status status; + + switch (state) { + case SCI_BASE_REMOTE_DEVICE_STATE_INITIAL: + case SCI_BASE_REMOTE_DEVICE_STATE_STOPPED: + case SCI_BASE_REMOTE_DEVICE_STATE_STARTING: + case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE: + case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE: + case SCI_BASE_REMOTE_DEVICE_STATE_FAILED: + case SCI_BASE_REMOTE_DEVICE_STATE_FINAL: + default: + dev_warn(scirdev_to_dev(sci_dev), "%s: in wrong state: %d\n", + __func__, state); + return SCI_FAILURE_INVALID_STATE; + case SCI_BASE_REMOTE_DEVICE_STATE_READY: + case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET: + case SCI_BASE_REMOTE_DEVICE_STATE_RESETTING: + status = common_complete_io(sci_port, sci_dev, sci_req); + break; + case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD: + case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ: + case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR: + status = common_complete_io(sci_port, sci_dev, sci_req); + if (status != SCI_SUCCESS) + break; + + if (sci_req->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(sm, SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET); + } else if (scic_sds_remote_device_get_request_count(sci_dev) == 0) + sci_base_state_machine_change_state(sm, SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + break; + case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD: + status = common_complete_io(sci_port, sci_dev, sci_req); + if (status != SCI_SUCCESS) + break; + sci_base_state_machine_change_state(sm, SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + break; + case SCI_BASE_REMOTE_DEVICE_STATE_STOPPING: + status = common_complete_io(sci_port, sci_dev, sci_req); + if (status != SCI_SUCCESS) + break; + + if (scic_sds_remote_device_get_request_count(sci_dev) == 0) + scic_sds_remote_node_context_destruct(&sci_dev->rnc, + rnc_destruct_done, + sci_dev); + break; + } + + if (status != SCI_SUCCESS) + dev_err(scirdev_to_dev(sci_dev), + "%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x " + "could not complete\n", __func__, sci_port, + sci_dev, sci_req, status); + + return status; } /** @@ -1058,32 +1128,6 @@ static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_frame_handl frame_index); } -static enum sci_status scic_sds_stp_remote_device_ready_await_reset_substate_complete_request_handler( - struct scic_sds_remote_device *device, - struct scic_sds_request *request) -{ - struct scic_sds_request *sci_req = request; - enum sci_status status; - - status = scic_sds_io_request_complete(sci_req); - if (status != SCI_SUCCESS) - goto out; - - status = scic_sds_port_complete_io(device->owning_port, device, sci_req); - if (status != SCI_SUCCESS) - goto out; - - scic_sds_remote_device_decrement_request_count(device); - out: - if (status != SCI_SUCCESS) - dev_err(scirdev_to_dev(device), - "%s: Port:0x%p Device:0x%p Request:0x%p Status:0x%x " - "could not complete\n", - __func__, device->owning_port, device, sci_req, status); - - return status; -} - static void scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler(void *_dev) { struct scic_sds_remote_device *sci_dev = _dev; @@ -1097,33 +1141,6 @@ static void scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handl isci_remote_device_ready(scic->ihost, idev); } -static enum sci_status -scic_sds_smp_remote_device_ready_cmd_substate_complete_io_handler(struct scic_sds_remote_device *sci_dev, - struct scic_sds_request *sci_req) -{ - enum sci_status status; - - status = scic_sds_io_request_complete(sci_req); - if (status != SCI_SUCCESS) - return status; - - status = scic_sds_port_complete_io(sci_dev->owning_port, sci_dev, sci_req); - if (status != SCI_SUCCESS) { - dev_err(scirdev_to_dev(sci_dev), - "%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__, sci_dev, sci_req, - sci_dev->owning_port, status); - return status; - } - - scic_sds_remote_device_decrement_request_count(sci_dev); - sci_base_state_machine_change_state(&sci_dev->state_machine, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); - - return status; -} - static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_frame_handler( struct scic_sds_remote_device *sci_dev, u32 frame_index) @@ -1144,7 +1161,6 @@ static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_frame_handl static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = { [SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1154,7 +1170,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_default_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1164,7 +1179,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_default_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1174,7 +1188,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_default_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_READY] = { - .complete_io_handler = scic_sds_remote_device_ready_state_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_ready_state_start_task_handler, .complete_task_handler = scic_sds_remote_device_ready_state_complete_request_handler, @@ -1184,7 +1197,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_general_frame_handler, }, [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1194,7 +1206,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_default_frame_handler }, [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { - .complete_io_handler = scic_sds_stp_remote_device_complete_request, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler, .complete_task_handler = scic_sds_stp_remote_device_complete_request, @@ -1204,7 +1215,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_stp_remote_device_ready_cmd_substate_frame_handler }, [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = { - .complete_io_handler = scic_sds_stp_remote_device_complete_request, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler, .complete_task_handler = scic_sds_stp_remote_device_complete_request, @@ -1214,7 +1224,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_stp_remote_device_ready_ncq_substate_frame_handler }, [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = { - .complete_io_handler = scic_sds_stp_remote_device_complete_request, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler, .complete_task_handler = scic_sds_stp_remote_device_complete_request, @@ -1224,7 +1233,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_general_frame_handler }, [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = { - .complete_io_handler = scic_sds_stp_remote_device_ready_await_reset_substate_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler, .complete_task_handler = scic_sds_stp_remote_device_complete_request, @@ -1234,7 +1242,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_general_frame_handler }, [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1244,7 +1251,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_default_frame_handler }, [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { - .complete_io_handler = scic_sds_smp_remote_device_ready_cmd_substate_complete_io_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1254,7 +1260,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_smp_remote_device_ready_cmd_substate_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = { - .complete_io_handler = scic_sds_remote_device_stopping_state_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_stopping_state_complete_request_handler, @@ -1264,7 +1269,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_general_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, @@ -1274,7 +1278,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_general_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = { - .complete_io_handler = scic_sds_remote_device_resetting_state_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_resetting_state_complete_request_handler, @@ -1284,7 +1287,6 @@ static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_ .frame_handler = scic_sds_remote_device_general_frame_handler }, [SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = { - .complete_io_handler = scic_sds_remote_device_default_complete_request_handler, .continue_io_handler = scic_sds_remote_device_default_continue_request_handler, .start_task_handler = scic_sds_remote_device_default_start_request_handler, .complete_task_handler = scic_sds_remote_device_default_complete_request_handler, diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 58ce41af9e66..64767656ee0d 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -387,12 +387,6 @@ typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)( */ struct scic_sds_remote_device_state_handler { /** - * The complete_io_handler specifies the method invoked when a user - * attempts to complete an IO request for a remote device. - */ - scic_sds_remote_device_request_handler_t complete_io_handler; - - /** * The continue_io_handler specifies the method invoked when a user * attempts to continue an IO request for a remote device. */ |
