return status;
}
-/**
- *
- * @controller: The controller that is starting the task request.
- * @sci_dev: The remote device for which the start task handling is being
- * requested.
- * @io_request: The task request that is being started.
- *
- * This method invokes the remote device start task handler. enum sci_status
- */
-enum sci_status scic_sds_remote_device_start_task(
- struct scic_sds_controller *controller,
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *io_request)
+static void scic_sds_remote_device_continue_request(void *dev)
+{
+ struct scic_sds_remote_device *sci_dev = dev;
+
+ /* we need to check if this request is still valid to continue. */
+ if (sci_dev->working_request)
+ scic_controller_continue_io(sci_dev->working_request);
+}
+
+enum sci_status scic_sds_remote_device_start_task(struct scic_sds_controller *scic,
+ struct scic_sds_remote_device *sci_dev,
+ struct scic_sds_request *sci_req)
{
- return sci_dev->state_handlers->start_task_handler(
- sci_dev, io_request);
+ 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_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE:
+ case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD:
+ case SCI_BASE_REMOTE_DEVICE_STATE_STOPPING:
+ case SCI_BASE_REMOTE_DEVICE_STATE_FAILED:
+ case SCI_BASE_REMOTE_DEVICE_STATE_RESETTING:
+ 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 SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE:
+ 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:
+ case SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET:
+ status = scic_sds_port_start_io(sci_port, sci_dev, sci_req);
+ if (status != SCI_SUCCESS)
+ return status;
+
+ status = scic_sds_remote_node_context_start_task(&sci_dev->rnc, sci_req);
+ if (status != SCI_SUCCESS)
+ goto out;
+
+ status = sci_req->state_handlers->start_handler(sci_req);
+ if (status != SCI_SUCCESS)
+ goto out;
+
+ /* Note: If the remote device state is not IDLE this will
+ * replace the request that probably resulted in the task
+ * management request.
+ */
+ sci_dev->working_request = sci_req;
+ sci_base_state_machine_change_state(sm, 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(&sci_dev->rnc,
+ SCI_SOFTWARE_SUSPENSION, NULL, NULL);
+ scic_sds_remote_node_context_resume(&sci_dev->rnc,
+ scic_sds_remote_device_continue_request,
+ sci_dev);
+
+ out:
+ scic_sds_remote_device_start_request(sci_dev, sci_req, 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;
+ case SCI_BASE_REMOTE_DEVICE_STATE_READY:
+ status = scic_sds_port_start_io(sci_port, sci_dev, sci_req);
+ if (status != SCI_SUCCESS)
+ return status;
+
+ status = scic_sds_remote_node_context_start_task(&sci_dev->rnc, sci_req);
+ if (status != SCI_SUCCESS)
+ break;
+
+ status = scic_sds_request_start(sci_req);
+ break;
+ }
+ scic_sds_remote_device_start_request(sci_dev, sci_req, status);
+
+ return status;
}
/**
}
}
-/**
- *
- * @request: This parameter specifies the request being continued.
- *
- * This method will continue to post tc for a STP request. This method usually
- * serves as a callback when RNC gets resumed during a task management
- * sequence. none
- */
-static void scic_sds_remote_device_continue_request(void *dev)
-{
- struct scic_sds_remote_device *sci_dev = dev;
-
- /* we need to check if this request is still valid to continue. */
- if (sci_dev->working_request)
- scic_controller_continue_io(sci_dev->working_request);
-}
-
static enum sci_status
default_device_handler(struct scic_sds_remote_device *sci_dev,
const char *func)
return SCI_FAILURE_INVALID_STATE;
}
-static enum sci_status scic_sds_remote_device_default_start_request_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- return default_device_handler(sci_dev, __func__);
-}
-
static enum sci_status scic_sds_remote_device_default_complete_request_handler(
struct scic_sds_remote_device *sci_dev,
struct scic_sds_request *request)
true);
}
-/*
- * This method will attempt to start a task request for this device object. The
- * remote device object will issue the start request for the task and if
- * successful it will start the request for the port object then increment its
- * own requet count. enum sci_status SCI_SUCCESS if the task request is started for
- * this device object. SCI_FAILURE_INSUFFICIENT_RESOURCES if the io request
- * object could not get the resources to start.
- */
-static enum sci_status scic_sds_remote_device_ready_state_start_task_handler(
- struct scic_sds_remote_device *sci_dev,
- struct scic_sds_request *request)
-{
- enum sci_status result;
-
- /* See if the port is in a state where we can start the IO request */
- result = scic_sds_port_start_io(
- scic_sds_remote_device_get_port(sci_dev), sci_dev, request);
-
- if (result == SCI_SUCCESS) {
- result = scic_sds_remote_node_context_start_task(&sci_dev->rnc,
- request);
- if (result == SCI_SUCCESS)
- result = scic_sds_request_start(request);
-
- scic_sds_remote_device_start_request(sci_dev, request, result);
- }
-
- return result;
-}
-
/*
* This method will complete the request for the remote device object. The
* method will call the completion handler for the request object and if
return status;
}
-/* scic_sds_stp_remote_device_ready_substate_start_request_handler - start stp
- * @device: The target device a task management request towards to.
- * @request: The task request.
- *
- * This is the READY NCQ substate handler to start task management request. In
- * this routine, we suspend and resume the RNC. 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 scic_sds_remote_device *device,
- struct scic_sds_request *request)
-{
- enum sci_status status;
-
- /* Will the port allow the io request to start? */
- status = device->owning_port->state_handlers->start_io_handler(
- device->owning_port, device, request);
- if (status != SCI_SUCCESS)
- return status;
-
- status = scic_sds_remote_node_context_start_task(&device->rnc, request);
- if (status != SCI_SUCCESS)
- goto out;
-
- status = request->state_handlers->start_handler(request);
- if (status != SCI_SUCCESS)
- goto out;
-
- /*
- * Note: If the remote device state is not IDLE this will replace
- * the request that probably resulted in the task management request.
- */
- device->working_request = request;
- sci_base_state_machine_change_state(&device->state_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(&device->rnc,
- SCI_SOFTWARE_SUSPENSION, NULL, NULL);
- scic_sds_remote_node_context_resume(&device->rnc,
- scic_sds_remote_device_continue_request,
- device);
-
-out:
- scic_sds_remote_device_start_request(device, 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;
-}
-
static enum sci_status scic_sds_stp_remote_device_ready_idle_substate_event_handler(
struct scic_sds_remote_device *sci_dev,
u32 event_code)
static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = {
[SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_READY] = {
- .start_task_handler = scic_sds_remote_device_ready_state_start_task_handler,
.complete_task_handler = scic_sds_remote_device_ready_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler,
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
.complete_task_handler = scic_sds_stp_remote_device_complete_request,
.suspend_handler = scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_stp_remote_device_ready_cmd_substate_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = {
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
.complete_task_handler = scic_sds_stp_remote_device_complete_request,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_stp_remote_device_ready_ncq_substate_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = {
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
.complete_task_handler = scic_sds_stp_remote_device_complete_request,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = {
- .start_task_handler = scic_sds_stp_remote_device_ready_substate_start_request_handler,
.complete_task_handler = scic_sds_stp_remote_device_complete_request,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_default_frame_handler
},
[SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_smp_remote_device_ready_cmd_substate_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_stopping_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_resetting_state_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
.frame_handler = scic_sds_remote_device_general_frame_handler
},
[SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = {
- .start_task_handler = scic_sds_remote_device_default_start_request_handler,
.complete_task_handler = scic_sds_remote_device_default_complete_request_handler,
.suspend_handler = scic_sds_remote_device_default_suspend_handler,
.resume_handler = scic_sds_remote_device_default_resume_handler,
projects / linux-2.6-microblaze.git / commitdiff