From: Dan Williams Date: Wed, 27 Apr 2011 23:32:45 +0000 (-0700) Subject: isci: merge remote_device substates into a single state machine X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ab2e8f7d07f577ee39228fb3454b9f29eab0f312;p=mv-sheeva.git isci: merge remote_device substates into a single state machine A substate is just a state, so uplevel the smp and stp device substates. Three tricks at work here: 1/ scic_sds_remote_device_ready_state_enter: needs to know the the device type so it can immediately transition to a stp or smp ready substate. 2/ scic_sds_remote_device_ready_state_exit: needs to know the device type. In the ssp case the device is no longer ready, in the stp, and smp case we have simply exited to a ready "substate". 3/ scic_sds_remote_device_resume_complete_handler: The one location where we directly check the current state against SCI_BASE_REMOTE_DEVICE_STATE_READY needed to comprehend the possible ready substates. Reported-by: Christoph Hellwig Signed-off-by: Dan Williams --- diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile index fc50ba34b13..c27d2599912 100644 --- a/drivers/scsi/isci/Makefile +++ b/drivers/scsi/isci/Makefile @@ -7,8 +7,6 @@ obj-$(CONFIG_SCSI_ISCI) += isci.o isci-objs := init.o phy.o request.o sata.o \ remote_device.o port.o timers.o \ host.o task.o probe_roms.o \ - stp_remote_device.o \ - smp_remote_device.o \ remote_node_context.o \ remote_node_table.o \ core/scic_sds_controller.o \ diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 2bbc7c20c40..f6da85e3f2a 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -53,6 +53,7 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "intel_sas.h" +#include "intel_ata.h" #include "isci.h" #include "port.h" #include "remote_device.h" @@ -71,6 +72,65 @@ #include "scu_event_codes.h" #include "task.h" +/** + * isci_remote_device_change_state() - This function gets the status of the + * remote_device object. + * @isci_device: This parameter points to the isci_remote_device object + * + * status of the object as a isci_status enum. + */ +void isci_remote_device_change_state( + struct isci_remote_device *isci_device, + enum isci_status status) +{ + unsigned long flags; + + spin_lock_irqsave(&isci_device->state_lock, flags); + isci_device->status = status; + spin_unlock_irqrestore(&isci_device->state_lock, flags); +} + +/** + * isci_remote_device_not_ready() - This function is called by the scic when + * the remote device is not ready. We mark the isci device as ready (not + * "ready_for_io") and signal the waiting proccess. + * @isci_host: This parameter specifies the isci host object. + * @isci_device: This parameter specifies the remote device + * + */ +static void isci_remote_device_not_ready(struct isci_host *ihost, + struct isci_remote_device *idev, u32 reason) +{ + dev_dbg(&ihost->pdev->dev, + "%s: isci_device = %p\n", __func__, idev); + + if (reason == SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED) + isci_remote_device_change_state(idev, isci_stopping); + else + /* device ready is actually a "not ready for io" state. */ + isci_remote_device_change_state(idev, isci_ready); +} + +/** + * isci_remote_device_ready() - This function is called by the scic when the + * remote device is ready. We mark the isci device as ready and signal the + * waiting proccess. + * @ihost: our valid isci_host + * @idev: remote device + * + */ +static void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote_device *idev) +{ + dev_dbg(&ihost->pdev->dev, + "%s: idev = %p\n", __func__, idev); + + isci_remote_device_change_state(idev, isci_ready_for_io); + if (test_and_clear_bit(IDEV_START_PENDING, &idev->flags)) + wake_up(&ihost->eventq); +} + + + enum sci_status scic_remote_device_stop( struct scic_sds_remote_device *sci_dev, u32 timeout) @@ -228,49 +288,43 @@ void scic_sds_remote_device_post_request( ); } -/** - * - * @user_parameter: This is cast to a remote device object. - * - * This method is called once the remote node context is ready to be freed. +/* called once the remote node context is ready to be freed. * The remote device can now report that its stop operation is complete. none */ -static void scic_sds_cb_remote_device_rnc_destruct_complete( - void *user_parameter) +static void scic_sds_cb_remote_device_rnc_destruct_complete(void *_dev) { - struct scic_sds_remote_device *sci_dev; - - sci_dev = (struct scic_sds_remote_device *)user_parameter; + struct scic_sds_remote_device *sci_dev = _dev; BUG_ON(sci_dev->started_request_count != 0); - sci_base_state_machine_change_state(&sci_dev->state_machine, SCI_BASE_REMOTE_DEVICE_STATE_STOPPED); } -/** - * - * @user_parameter: This is cast to a remote device object. - * - * This method is called once the remote node context has transisitioned to a +/* called once the remote node context has transisitioned to a * ready state. This is the indication that the remote device object can also - * transition to ready. none + * transition to ready. */ -static void scic_sds_remote_device_resume_complete_handler( - void *user_parameter) -{ - struct scic_sds_remote_device *sci_dev; - - sci_dev = (struct scic_sds_remote_device *)user_parameter; - - if ( - sci_base_state_machine_get_state(&sci_dev->state_machine) - != SCI_BASE_REMOTE_DEVICE_STATE_READY - ) { - sci_base_state_machine_change_state( - &sci_dev->state_machine, - SCI_BASE_REMOTE_DEVICE_STATE_READY - ); +static void scic_sds_remote_device_resume_complete_handler(void *_dev) +{ + struct scic_sds_remote_device *sci_dev = _dev; + enum scic_sds_remote_device_states state; + + state = sci_dev->state_machine.current_state_id; + switch (state) { + case SCI_BASE_REMOTE_DEVICE_STATE_READY: + 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: + case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE: + case SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD: + break; + default: + /* go 'ready' if we are not already in a ready state */ + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCI_BASE_REMOTE_DEVICE_STATE_READY); + break; } } @@ -284,7 +338,7 @@ static void scic_sds_remote_device_resume_complete_handler( * This method will perform the STP request start processing common to IO * requests and task requests of all types. none */ -void scic_sds_remote_device_start_request( +static void scic_sds_remote_device_start_request( struct scic_sds_remote_device *sci_dev, struct scic_sds_request *sci_req, enum sci_status status) @@ -308,7 +362,7 @@ void scic_sds_remote_device_start_request( * serves as a callback when RNC gets resumed during a task management * sequence. none */ -void scic_sds_remote_device_continue_request(void *dev) +static void scic_sds_remote_device_continue_request(void *dev) { struct scic_sds_remote_device *sci_dev = dev; @@ -368,7 +422,7 @@ default_device_handler(struct scic_sds_remote_device *sci_dev, return SCI_FAILURE_INVALID_STATE; } -enum sci_status scic_sds_remote_device_default_start_handler( +static enum sci_status scic_sds_remote_device_default_start_handler( struct scic_sds_remote_device *sci_dev) { return default_device_handler(sci_dev, __func__); @@ -380,37 +434,37 @@ static enum sci_status scic_sds_remote_device_default_stop_handler( return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_fail_handler( +static enum sci_status scic_sds_remote_device_default_fail_handler( struct scic_sds_remote_device *sci_dev) { return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_destruct_handler( +static enum sci_status scic_sds_remote_device_default_destruct_handler( struct scic_sds_remote_device *sci_dev) { return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_reset_handler( +static enum sci_status scic_sds_remote_device_default_reset_handler( struct scic_sds_remote_device *sci_dev) { return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_reset_complete_handler( +static enum sci_status scic_sds_remote_device_default_reset_complete_handler( struct scic_sds_remote_device *sci_dev) { return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_suspend_handler( +static enum sci_status scic_sds_remote_device_default_suspend_handler( struct scic_sds_remote_device *sci_dev, u32 suspend_type) { return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_resume_handler( +static enum sci_status scic_sds_remote_device_default_resume_handler( struct scic_sds_remote_device *sci_dev) { return default_device_handler(sci_dev, __func__); @@ -505,7 +559,7 @@ static enum sci_status scic_sds_remote_device_default_event_handler( * releases the frame and returns a failure. enum sci_status * SCI_FAILURE_INVALID_STATE */ -enum sci_status scic_sds_remote_device_default_frame_handler( +static enum sci_status scic_sds_remote_device_default_frame_handler( struct scic_sds_remote_device *sci_dev, u32 frame_index) { @@ -525,21 +579,21 @@ enum sci_status scic_sds_remote_device_default_frame_handler( return SCI_FAILURE_INVALID_STATE; } -enum sci_status scic_sds_remote_device_default_start_request_handler( +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__); } -enum sci_status scic_sds_remote_device_default_complete_request_handler( +static enum sci_status scic_sds_remote_device_default_complete_request_handler( struct scic_sds_remote_device *sci_dev, struct scic_sds_request *request) { return default_device_handler(sci_dev, __func__); } -enum sci_status scic_sds_remote_device_default_continue_request_handler( +static enum sci_status scic_sds_remote_device_default_continue_request_handler( struct scic_sds_remote_device *sci_dev, struct scic_sds_request *request) { @@ -558,7 +612,7 @@ enum sci_status scic_sds_remote_device_default_continue_request_handler( * This method decodes the tag for the io request object and routes the * unsolicited frame to that object. enum sci_status SCI_FAILURE_INVALID_STATE */ -enum sci_status scic_sds_remote_device_general_frame_handler( +static enum sci_status scic_sds_remote_device_general_frame_handler( struct scic_sds_remote_device *sci_dev, u32 frame_index) { @@ -602,7 +656,7 @@ enum sci_status scic_sds_remote_device_general_frame_handler( * This is a common method for handling events reported to the remote device * from the controller object. enum sci_status */ -enum sci_status scic_sds_remote_device_general_event_handler( +static enum sci_status scic_sds_remote_device_general_event_handler( struct scic_sds_remote_device *sci_dev, u32 event_code) { @@ -705,7 +759,7 @@ static enum sci_status scic_sds_remote_device_starting_state_stop_handler( return SCI_SUCCESS; } -enum sci_status scic_sds_remote_device_ready_state_stop_handler( +static enum sci_status scic_sds_remote_device_ready_state_stop_handler( struct scic_sds_remote_device *sci_dev) { enum sci_status status = SCI_SUCCESS; @@ -731,7 +785,7 @@ enum sci_status scic_sds_remote_device_ready_state_stop_handler( * * This is the ready state device reset handler enum sci_status */ -enum sci_status scic_sds_remote_device_ready_state_reset_handler( +static enum sci_status scic_sds_remote_device_ready_state_reset_handler( struct scic_sds_remote_device *sci_dev) { /* Request the parent state machine to transition to the stopping state */ @@ -893,34 +947,15 @@ static enum sci_status scic_sds_remote_device_stopping_state_complete_request_ha return SCI_SUCCESS; } -/** - * - * @device: The struct scic_sds_remote_device which is to be cast into a - * struct scic_sds_remote_device object. - * - * This method will complete the reset operation when the device is in the - * resetting state. enum sci_status - */ static enum sci_status scic_sds_remote_device_resetting_state_reset_complete_handler( struct scic_sds_remote_device *sci_dev) { - - sci_base_state_machine_change_state( - &sci_dev->state_machine, - SCI_BASE_REMOTE_DEVICE_STATE_READY - ); + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCI_BASE_REMOTE_DEVICE_STATE_READY); return SCI_SUCCESS; } -/** - * - * @device: The struct scic_sds_remote_device which is to be cast into a - * struct scic_sds_remote_device object. - * - * This method will stop the remote device while in the resetting state. - * enum sci_status - */ static enum sci_status scic_sds_remote_device_resetting_state_stop_handler( struct scic_sds_remote_device *sci_dev) { @@ -932,12 +967,11 @@ static enum sci_status scic_sds_remote_device_resetting_state_stop_handler( return SCI_SUCCESS; } -/* - * This method completes requests for this struct scic_sds_remote_device while it is - * in the SCI_BASE_REMOTE_DEVICE_STATE_RESETTING state. This method calls the - * complete method for the request object and if that is successful the port - * object is called to complete the task request. Then the device object itself - * completes the task request. enum sci_status +/* complete requests for this device while it is in the + * SCI_BASE_REMOTE_DEVICE_STATE_RESETTING state. This method calls the complete + * method for the request object and if that is successful the port object is + * called to complete the task request. Then the device object itself completes + * the task request. enum sci_status */ static enum sci_status scic_sds_remote_device_resetting_state_complete_request_handler( struct scic_sds_remote_device *sci_dev, @@ -960,173 +994,665 @@ static enum sci_status scic_sds_remote_device_resetting_state_complete_request_h return status; } -static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = { - [SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_default_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_default_event_handler, - .frame_handler = scic_sds_remote_device_default_frame_handler - }, - [SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = { - .start_handler = scic_sds_remote_device_stopped_state_start_handler, - .stop_handler = scic_sds_remote_device_stopped_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_stopped_state_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_default_event_handler, - .frame_handler = scic_sds_remote_device_default_frame_handler - }, - [SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_starting_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_remote_device_default_frame_handler - }, - [SCI_BASE_REMOTE_DEVICE_STATE_READY] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_ready_state_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_ready_state_start_io_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_remote_device_general_frame_handler, - }, - [SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_stopping_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_remote_device_general_frame_handler - }, - [SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_default_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_default_event_handler, - .frame_handler = scic_sds_remote_device_general_frame_handler - }, - [SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_resetting_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_resetting_state_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_default_event_handler, - .frame_handler = scic_sds_remote_device_general_frame_handler - }, - [SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_default_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_default_event_handler, - .frame_handler = scic_sds_remote_device_default_frame_handler - } -}; - -static void scic_sds_remote_device_initial_state_enter(void *object) +static enum sci_status scic_sds_stp_remote_device_complete_request(struct scic_sds_remote_device *sci_dev, + struct scic_sds_request *sci_req) { - struct scic_sds_remote_device *sci_dev = object; + enum sci_status status; - SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, - SCI_BASE_REMOTE_DEVICE_STATE_INITIAL); + status = scic_sds_io_request_complete(sci_req); + if (status != SCI_SUCCESS) + goto out; - /* Initial state is a transitional state to the stopped state */ - sci_base_state_machine_change_state(&sci_dev->state_machine, - SCI_BASE_REMOTE_DEVICE_STATE_STOPPED); + status = scic_sds_port_complete_io(sci_dev->owning_port, sci_dev, sci_req); + if (status != SCI_SUCCESS) + goto out; + + scic_sds_remote_device_decrement_request_count(sci_dev); + 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(&sci_dev->state_machine, + 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(&sci_dev->state_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + + + out: + 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_dev->owning_port, + sci_dev, sci_req, status); + + return status; } -/** - * isci_remote_device_change_state() - This function gets the status of the - * remote_device object. - * @isci_device: This parameter points to the isci_remote_device object +/* 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. * - * status of the object as a isci_status enum. + * 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. */ -void isci_remote_device_change_state( - struct isci_remote_device *isci_device, - enum isci_status status) +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; +} + +/* 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 + * + * If this is a softreset we may want to have a different substate. + */ +static enum sci_status scic_sds_stp_remote_device_ready_idle_substate_start_io_handler( + struct scic_sds_remote_device *sci_dev, + struct scic_sds_request *request) +{ + enum sci_status status; + struct isci_request *isci_request = request->ireq; + enum scic_sds_remote_device_states new_state; + + /* Will the port allow the io request to start? */ + status = sci_dev->owning_port->state_handlers->start_io_handler( + sci_dev->owning_port, sci_dev, request); + if (status != SCI_SUCCESS) + return status; + + status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request); + if (status != SCI_SUCCESS) + goto out; + + status = request->state_handlers->start_handler(request); + if (status != SCI_SUCCESS) + goto out; + + if (isci_sata_get_sat_protocol(isci_request) == SAT_PROTOCOL_FPDMA) + new_state = SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ; + else { + sci_dev->working_request = request; + new_state = SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD; + } + sci_base_state_machine_change_state(&sci_dev->state_machine, new_state); +out: + scic_sds_remote_device_start_request(sci_dev, request, status); + return status; +} + + +static enum sci_status scic_sds_stp_remote_device_ready_idle_substate_event_handler( + struct scic_sds_remote_device *sci_dev, + u32 event_code) +{ + enum sci_status status; + + status = scic_sds_remote_device_general_event_handler(sci_dev, event_code); + if (status != SCI_SUCCESS) + return status; + + /* We pick up suspension events to handle specifically to this state. We + * resume the RNC right away. enum sci_status + */ + 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(&sci_dev->rnc, NULL, NULL); + + return status; +} + +static enum sci_status scic_sds_stp_remote_device_ready_ncq_substate_start_io_handler( + struct scic_sds_remote_device *sci_dev, + struct scic_sds_request *request) +{ + enum sci_status status; + struct isci_request *isci_request = request->ireq; + scic_sds_port_io_request_handler_t start_io; + + if (isci_sata_get_sat_protocol(isci_request) == SAT_PROTOCOL_FPDMA) { + start_io = sci_dev->owning_port->state_handlers->start_io_handler; + status = start_io(sci_dev->owning_port, sci_dev, request); + if (status != SCI_SUCCESS) + return status; + + status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request); + if (status != SCI_SUCCESS) + return status; + + status = request->state_handlers->start_handler(request); + + scic_sds_remote_device_start_request(sci_dev, request, status); + } else + status = SCI_FAILURE_INVALID_STATE; + + return status; +} + +static enum sci_status scic_sds_stp_remote_device_ready_ncq_substate_frame_handler(struct scic_sds_remote_device *sci_dev, + u32 frame_index) +{ + enum sci_status status; + struct sata_fis_header *frame_header; + struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller; + + status = scic_sds_unsolicited_frame_control_get_header(&scic->uf_control, + frame_index, + (void **)&frame_header); + if (status != SCI_SUCCESS) + return status; + + if (frame_header->fis_type == SATA_FIS_TYPE_SETDEVBITS && + (frame_header->status & ATA_STATUS_REG_ERROR_BIT)) { + sci_dev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED; + + /* TODO Check sactive and complete associated IO if any. */ + + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR); + } else if (frame_header->fis_type == SATA_FIS_TYPE_REGD2H && + (frame_header->status & ATA_STATUS_REG_ERROR_BIT)) { + /* + * Some devices return D2H FIS when an NCQ error is detected. + * Treat this like an SDB error FIS ready reason. + */ + sci_dev->not_ready_reason = SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED; + + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR); + } else + status = SCI_FAILURE; + + scic_sds_controller_release_frame(scic, frame_index); + + return status; +} + +static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler( + struct scic_sds_remote_device *device, + struct scic_sds_request *request) +{ + /* device is already handling a command it can not accept new commands + * until this one is complete. + */ + return SCI_FAILURE_INVALID_STATE; +} + +static enum sci_status scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler( + struct scic_sds_remote_device *sci_dev, + u32 suspend_type) +{ + enum sci_status status; + + status = scic_sds_remote_node_context_suspend(&sci_dev->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 *sci_dev, + u32 frame_index) +{ + /* 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. + */ + return scic_sds_io_request_frame_handler(sci_dev->working_request, + frame_index); +} + +static enum sci_status scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler( + struct scic_sds_remote_device *device, + struct scic_sds_request *request) +{ + return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED; +} + +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; + struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); + struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller; + + /* For NCQ operation we do not issue a isci_remote_device_not_ready(). + * As a result, avoid sending the ready notification. + */ + if (sci_dev->state_machine.previous_state_id != SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ) + isci_remote_device_ready(scic->ihost, idev); +} + +static enum sci_status scic_sds_smp_remote_device_ready_idle_substate_start_io_handler( + struct scic_sds_remote_device *sci_dev, + struct scic_sds_request *sci_req) +{ + enum sci_status status; + + /* Will the port allow the io request to start? */ + status = sci_dev->owning_port->state_handlers->start_io_handler( + sci_dev->owning_port, sci_dev, sci_req); + if (status != SCI_SUCCESS) + return status; + + status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, sci_req); + if (status != SCI_SUCCESS) + return status; + + status = scic_sds_request_start(sci_req); + if (status != SCI_SUCCESS) + return status; + + sci_dev->working_request = sci_req; + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD); + + scic_sds_remote_device_start_request(sci_dev, sci_req, status); + + return status; +} + +static enum sci_status scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler( + struct scic_sds_remote_device *device, + struct scic_sds_request *request) +{ + /* device is already handling a command it can not accept new commands + * until this one is complete. + */ + return SCI_FAILURE_INVALID_STATE; +} + +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) +{ + 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( + sci_dev->working_request, + frame_index + ); + + return status; +} + +static const struct scic_sds_remote_device_state_handler scic_sds_remote_device_state_handler_table[] = { + [SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_default_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_default_event_handler, + .frame_handler = scic_sds_remote_device_default_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_STOPPED] = { + .start_handler = scic_sds_remote_device_stopped_state_start_handler, + .stop_handler = scic_sds_remote_device_stopped_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_stopped_state_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_default_event_handler, + .frame_handler = scic_sds_remote_device_default_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_STARTING] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_starting_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_remote_device_default_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_READY] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_ready_state_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_ready_state_start_io_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_remote_device_general_frame_handler, + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_ready_state_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_stp_remote_device_ready_idle_substate_start_io_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_stp_remote_device_ready_idle_substate_event_handler, + .frame_handler = scic_sds_remote_device_default_frame_handler + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_ready_state_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler, + .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, + .suspend_handler = scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_stp_remote_device_ready_cmd_substate_frame_handler + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_ready_state_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_stp_remote_device_ready_ncq_substate_start_io_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_stp_remote_device_ready_ncq_substate_frame_handler + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_ready_state_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_remote_device_general_frame_handler + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_ready_state_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_remote_device_general_frame_handler + }, + [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_smp_remote_device_ready_idle_substate_start_io_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_remote_device_default_frame_handler + }, + [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_ready_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_smp_remote_device_ready_cmd_substate_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_stopping_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_general_event_handler, + .frame_handler = scic_sds_remote_device_general_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_FAILED] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_default_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_default_event_handler, + .frame_handler = scic_sds_remote_device_general_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_RESETTING] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_resetting_state_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_resetting_state_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_default_event_handler, + .frame_handler = scic_sds_remote_device_general_frame_handler + }, + [SCI_BASE_REMOTE_DEVICE_STATE_FINAL] = { + .start_handler = scic_sds_remote_device_default_start_handler, + .stop_handler = scic_sds_remote_device_default_stop_handler, + .fail_handler = scic_sds_remote_device_default_fail_handler, + .destruct_handler = scic_sds_remote_device_default_destruct_handler, + .reset_handler = scic_sds_remote_device_default_reset_handler, + .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, + .start_io_handler = scic_sds_remote_device_default_start_request_handler, + .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, + .suspend_handler = scic_sds_remote_device_default_suspend_handler, + .resume_handler = scic_sds_remote_device_default_resume_handler, + .event_handler = scic_sds_remote_device_default_event_handler, + .frame_handler = scic_sds_remote_device_default_frame_handler + } +}; + +static void scic_sds_remote_device_initial_state_enter(void *object) { - unsigned long flags; + struct scic_sds_remote_device *sci_dev = object; - spin_lock_irqsave(&isci_device->state_lock, flags); - isci_device->status = status; - spin_unlock_irqrestore(&isci_device->state_lock, flags); + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCI_BASE_REMOTE_DEVICE_STATE_INITIAL); + + /* Initial state is a transitional state to the stopped state */ + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCI_BASE_REMOTE_DEVICE_STATE_STOPPED); } /** @@ -1242,9 +1768,8 @@ static void scic_sds_remote_device_starting_state_enter(void *object) static void scic_sds_remote_device_ready_state_enter(void *object) { struct scic_sds_remote_device *sci_dev = object; - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; - struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); + struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller; + struct domain_device *dev = sci_dev_to_domain(sci_dev); SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, @@ -1252,23 +1777,26 @@ static void scic_sds_remote_device_ready_state_enter(void *object) scic->remote_device_sequence[sci_dev->rnc.remote_node_index]++; - if (sci_dev->has_ready_substate_machine) - sci_base_state_machine_start(&sci_dev->ready_substate_machine); - else - isci_remote_device_ready(ihost, idev); + if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_SATA)) { + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + } else if (dev_is_expander(dev)) { + sci_base_state_machine_change_state(&sci_dev->state_machine, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + } else + isci_remote_device_ready(scic->ihost, sci_dev_to_idev(sci_dev)); } static void scic_sds_remote_device_ready_state_exit(void *object) { struct scic_sds_remote_device *sci_dev = object; - if (sci_dev->has_ready_substate_machine) - sci_base_state_machine_stop(&sci_dev->ready_substate_machine); - else { - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; + struct domain_device *dev = sci_dev_to_domain(sci_dev); + + if (dev->dev_type == SAS_END_DEV) { + struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller; struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); - isci_remote_device_not_ready(ihost, idev, + isci_remote_device_not_ready(scic->ihost, idev, SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED); } } @@ -1327,6 +1855,101 @@ static void scic_sds_remote_device_final_state_enter(void *object) ); } +static void scic_sds_stp_remote_device_ready_idle_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + + sci_dev->working_request = NULL; + if (scic_sds_remote_node_context_is_ready(&sci_dev->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(sci_dev); + } else { + scic_sds_remote_node_context_resume(&sci_dev->rnc, + scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler, + sci_dev); + } +} + +static void scic_sds_stp_remote_device_ready_cmd_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); + + BUG_ON(sci_dev->working_request == NULL); + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD); + + isci_remote_device_not_ready(scic->ihost, sci_dev_to_idev(sci_dev), + SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED); +} + +static void scic_sds_stp_remote_device_ready_ncq_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ); +} + +static void scic_sds_stp_remote_device_ready_ncq_error_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); + struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR); + + if (sci_dev->not_ready_reason == SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED) + isci_remote_device_not_ready(scic->ihost, idev, + sci_dev->not_ready_reason); +} + +static void scic_sds_stp_remote_device_ready_await_reset_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET); +} + +static void scic_sds_smp_remote_device_ready_idle_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); + + isci_remote_device_ready(scic->ihost, sci_dev_to_idev(sci_dev)); +} + +static void scic_sds_smp_remote_device_ready_cmd_substate_enter(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); + + BUG_ON(sci_dev->working_request == NULL); + + SET_STATE_HANDLER(sci_dev, scic_sds_remote_device_state_handler_table, + SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD); + + isci_remote_device_not_ready(scic->ihost, sci_dev_to_idev(sci_dev), + SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED); +} + +static void scic_sds_smp_remote_device_ready_cmd_substate_exit(void *object) +{ + struct scic_sds_remote_device *sci_dev = object; + + sci_dev->working_request = NULL; +} static const struct sci_base_state scic_sds_remote_device_state_table[] = { [SCI_BASE_REMOTE_DEVICE_STATE_INITIAL] = { @@ -1342,6 +1965,28 @@ static const struct sci_base_state scic_sds_remote_device_state_table[] = { .enter_state = scic_sds_remote_device_ready_state_enter, .exit_state = scic_sds_remote_device_ready_state_exit }, + [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, + }, + [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = { + .enter_state = scic_sds_stp_remote_device_ready_await_reset_substate_enter, + }, + [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, + }, [SCI_BASE_REMOTE_DEVICE_STATE_STOPPING] = { .enter_state = scic_sds_remote_device_stopping_state_enter, }, @@ -1406,7 +2051,6 @@ static enum sci_status scic_remote_device_da_construct(struct scic_sds_port *sci struct scic_sds_remote_device *sci_dev) { enum sci_status status; - u16 remote_node_index; struct domain_device *dev = sci_dev_to_domain(sci_dev); scic_remote_device_construct(sci_port, sci_dev); @@ -1418,33 +2062,15 @@ static enum sci_status scic_remote_device_da_construct(struct scic_sds_port *sci sci_dev->is_direct_attached = true; status = scic_sds_controller_allocate_remote_node_context(sci_port->owning_controller, sci_dev, - &remote_node_index); + &sci_dev->rnc.remote_node_index); if (status != SCI_SUCCESS) return status; - sci_dev->rnc.remote_node_index = remote_node_index; - - if (dev->dev_type == SAS_END_DEV) - sci_dev->has_ready_substate_machine = false; - else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { - sci_dev->has_ready_substate_machine = true; - - sci_base_state_machine_construct( - &sci_dev->ready_substate_machine, - sci_dev, - scic_sds_stp_remote_device_ready_substate_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); - } else if (dev_is_expander(dev)) { - sci_dev->has_ready_substate_machine = true; - - /* add the SMP ready substate machine construction here */ - sci_base_state_machine_construct( - &sci_dev->ready_substate_machine, - sci_dev, - scic_sds_smp_remote_device_ready_substate_table, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); - } else + if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV || + (dev->tproto & SAS_PROTOCOL_STP) || dev_is_expander(dev)) + /* pass */; + else return SCI_FAILURE_UNSUPPORTED_PROTOCOL; sci_dev->connection_rate = scic_sds_port_get_max_allowed_speed(sci_port); @@ -1470,37 +2096,22 @@ static enum sci_status scic_remote_device_da_construct(struct scic_sds_port *sci static enum sci_status scic_remote_device_ea_construct(struct scic_sds_port *sci_port, struct scic_sds_remote_device *sci_dev) { - struct scic_sds_controller *scic = sci_port->owning_controller; struct domain_device *dev = sci_dev_to_domain(sci_dev); enum sci_status status; scic_remote_device_construct(sci_port, sci_dev); - status = scic_sds_controller_allocate_remote_node_context( - scic, sci_dev, &sci_dev->rnc.remote_node_index); + status = scic_sds_controller_allocate_remote_node_context(sci_port->owning_controller, + sci_dev, + &sci_dev->rnc.remote_node_index); if (status != SCI_SUCCESS) return status; - if (dev->dev_type == SAS_END_DEV) - sci_dev->has_ready_substate_machine = false; - else if (dev_is_expander(dev)) { - sci_dev->has_ready_substate_machine = true; - - /* add the SMP ready substate machine construction here */ - sci_base_state_machine_construct( - &sci_dev->ready_substate_machine, - sci_dev, - scic_sds_smp_remote_device_ready_substate_table, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); - } else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { - sci_dev->has_ready_substate_machine = true; - - sci_base_state_machine_construct( - &sci_dev->ready_substate_machine, - sci_dev, - scic_sds_stp_remote_device_ready_substate_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); - } + if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV || + (dev->tproto & SAS_PROTOCOL_STP) || dev_is_expander(dev)) + /* pass */; + else + return SCI_FAILURE_UNSUPPORTED_PROTOCOL; /* * For SAS-2 the physical link rate is actually a logical link @@ -1515,7 +2126,7 @@ static enum sci_status scic_remote_device_ea_construct(struct scic_sds_port *sci /* / @todo Should I assign the port width by reading all of the phys on the port? */ sci_dev->device_port_width = 1; - return status; + return SCI_SUCCESS; } /** @@ -1617,45 +2228,6 @@ isci_remote_device_alloc(struct isci_host *ihost, struct isci_port *iport) return idev; } -/** - * isci_remote_device_ready() - This function is called by the scic when the - * remote device is ready. We mark the isci device as ready and signal the - * waiting proccess. - * @ihost: our valid isci_host - * @idev: remote device - * - */ -void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote_device *idev) -{ - dev_dbg(&ihost->pdev->dev, - "%s: idev = %p\n", __func__, idev); - - isci_remote_device_change_state(idev, isci_ready_for_io); - if (test_and_clear_bit(IDEV_START_PENDING, &idev->flags)) - wake_up(&ihost->eventq); -} - -/** - * isci_remote_device_not_ready() - This function is called by the scic when - * the remote device is not ready. We mark the isci device as ready (not - * "ready_for_io") and signal the waiting proccess. - * @isci_host: This parameter specifies the isci host object. - * @isci_device: This parameter specifies the remote device - * - */ -void isci_remote_device_not_ready(struct isci_host *ihost, - struct isci_remote_device *idev, u32 reason) -{ - dev_dbg(&ihost->pdev->dev, - "%s: isci_device = %p\n", __func__, idev); - - if (reason == SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED) - isci_remote_device_change_state(idev, isci_stopping); - else - /* device ready is actually a "not ready for io" state. */ - isci_remote_device_change_state(idev, isci_ready); -} - /** * isci_remote_device_stop() - This function is called internally to stop the * remote device. diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 62623c76638..dda217a6bd3 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -68,9 +68,7 @@ enum scic_remote_device_not_ready_reason_code { SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED, SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED, SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED, - SCIC_REMOTE_DEVICE_NOT_READY_REASON_CODE_MAX - }; struct scic_sds_remote_device { @@ -131,19 +129,6 @@ struct scic_sds_remote_device { */ u32 not_ready_reason; - /** - * This field is true if this remote device has an initialzied ready substate - * machine. SSP devices do not have a ready substate machine and STP devices - * have a ready substate machine. - */ - bool has_ready_substate_machine; - - /** - * This field contains the state machine for the ready substate machine for - * this struct scic_sds_remote_device object. - */ - struct sci_base_state_machine ready_substate_machine; - /** * This field maintains the set of state handlers for the remote device * object. These are changed each time the remote device enters a new state. @@ -171,10 +156,6 @@ enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_remote_device *idev); void isci_remote_device_nuke_requests(struct isci_host *ihost, struct isci_remote_device *idev); -void isci_remote_device_ready(struct isci_host *ihost, - struct isci_remote_device *idev); -void isci_remote_device_not_ready(struct isci_host *ihost, - struct isci_remote_device *idev, u32 reason); void isci_remote_device_gone(struct domain_device *domain_dev); int isci_remote_device_found(struct domain_device *domain_dev); bool isci_device_is_reset_pending(struct isci_host *ihost, @@ -277,77 +258,6 @@ enum scic_sds_remote_device_states { */ SCI_BASE_REMOTE_DEVICE_STATE_READY, - /** - * This state indicates that the remote device is in the process of - * stopping. In this state no new IO operations are permitted, but - * existing IO operations are allowed to complete. - * This state is entered from the READY state. - * This state is entered from the FAILED state. - */ - SCI_BASE_REMOTE_DEVICE_STATE_STOPPING, - - /** - * This state indicates that the remote device has failed. - * In this state no new IO operations are permitted. - * This state is entered from the INITIALIZING state. - * This state is entered from the READY state. - */ - SCI_BASE_REMOTE_DEVICE_STATE_FAILED, - - /** - * This state indicates the device is being reset. - * In this state no new IO operations are permitted. - * This state is entered from the READY state. - */ - SCI_BASE_REMOTE_DEVICE_STATE_RESETTING, - - /** - * Simply the final state for the base remote device state machine. - */ - SCI_BASE_REMOTE_DEVICE_STATE_FINAL, -}; - -/** - * enum scic_sds_ssp_remote_device_ready_substates - - * - * This is the enumeration of the ready substates for the - * struct scic_sds_remote_device. - */ -enum scic_sds_ssp_remote_device_ready_substates { - /** - * This is the initial state for the remote device ready substate. - */ - SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_INITIAL, - - /** - * This is the ready operational substate for the remote device. - * This is the normal operational state for a remote device. - */ - SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL, - - /** - * This is the suspended state for the remote device. This is the state - * that the device is placed in when a RNC suspend is received by - * the SCU hardware. - */ - SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED, - - /** - * This is the final state that the device is placed in before a change - * to the base state machine. - */ - SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_FINAL, - - SCIC_SDS_SSP_REMOTE_DEVICE_READY_MAX_SUBSTATES -}; - -/** - * enum scic_sds_stp_remote_device_ready_substates - - * - * This is the enumeration for the struct scic_sds_remote_device ready substates - * for the STP remote device. - */ -enum scic_sds_stp_remote_device_ready_substates { /** * This is the idle substate for the stp remote device. When there are no * active IO for the device it is is in this state. @@ -381,14 +291,7 @@ enum scic_sds_stp_remote_device_ready_substates { * coming to be recovered from certain hardware specific error. */ SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET, -}; -/** - * enum scic_sds_smp_remote_device_ready_substates - - * - * This is the enumeration of the ready substates for the SMP REMOTE DEVICE. - */ -enum scic_sds_smp_remote_device_ready_substates { /** * This is the ready operational substate for the remote device. This is the * normal operational state for a remote device. @@ -400,6 +303,35 @@ enum scic_sds_smp_remote_device_ready_substates { * the device is placed in when a RNC suspend is received by the SCU hardware. */ SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD, + + /** + * This state indicates that the remote device is in the process of + * stopping. In this state no new IO operations are permitted, but + * existing IO operations are allowed to complete. + * This state is entered from the READY state. + * This state is entered from the FAILED state. + */ + SCI_BASE_REMOTE_DEVICE_STATE_STOPPING, + + /** + * This state indicates that the remote device has failed. + * In this state no new IO operations are permitted. + * This state is entered from the INITIALIZING state. + * This state is entered from the READY state. + */ + SCI_BASE_REMOTE_DEVICE_STATE_FAILED, + + /** + * This state indicates the device is being reset. + * In this state no new IO operations are permitted. + * This state is entered from the READY state. + */ + SCI_BASE_REMOTE_DEVICE_STATE_RESETTING, + + /** + * Simply the final state for the base remote device state machine. + */ + SCI_BASE_REMOTE_DEVICE_STATE_FINAL, }; static inline struct scic_sds_remote_device *rnc_to_dev(struct scic_sds_remote_node_context *rnc) @@ -541,10 +473,6 @@ struct scic_sds_remote_device_state_handler { scic_sds_remote_device_frame_handler_t frame_handler; }; -extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[]; -extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[]; -extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[]; - /** * scic_sds_remote_device_increment_request_count() - * @@ -672,92 +600,24 @@ enum sci_status scic_sds_remote_device_start_io( struct scic_sds_remote_device *sci_dev, struct scic_sds_request *io_request); -enum sci_status scic_sds_remote_device_complete_io( +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); -enum sci_status scic_sds_remote_device_resume( - struct scic_sds_remote_device *sci_dev); +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); enum sci_status scic_sds_remote_device_suspend( struct scic_sds_remote_device *sci_dev, u32 suspend_type); -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); - void scic_sds_remote_device_post_request( struct scic_sds_remote_device *sci_dev, u32 request); #define scic_sds_remote_device_is_atapi(sci_dev) false -void scic_sds_remote_device_start_request( - struct scic_sds_remote_device *sci_dev, - struct scic_sds_request *sci_req, - enum sci_status status); - -void scic_sds_remote_device_continue_request(void *sci_dev); - -enum sci_status scic_sds_remote_device_default_start_handler( - struct scic_sds_remote_device *sci_dev); - -enum sci_status scic_sds_remote_device_default_fail_handler( - struct scic_sds_remote_device *sci_dev); - -enum sci_status scic_sds_remote_device_default_destruct_handler( - struct scic_sds_remote_device *sci_dev); - -enum sci_status scic_sds_remote_device_default_reset_handler( - struct scic_sds_remote_device *device); - -enum sci_status scic_sds_remote_device_default_reset_complete_handler( - struct scic_sds_remote_device *device); - -enum sci_status scic_sds_remote_device_default_start_request_handler( - struct scic_sds_remote_device *device, - struct scic_sds_request *request); - -enum sci_status scic_sds_remote_device_default_complete_request_handler( - struct scic_sds_remote_device *device, - struct scic_sds_request *request); - -enum sci_status scic_sds_remote_device_default_continue_request_handler( - struct scic_sds_remote_device *device, - struct scic_sds_request *request); - -enum sci_status scic_sds_remote_device_default_suspend_handler( - struct scic_sds_remote_device *sci_dev, - u32 suspend_type); - -enum sci_status scic_sds_remote_device_default_resume_handler( - struct scic_sds_remote_device *sci_dev); - - -enum sci_status scic_sds_remote_device_default_frame_handler( - struct scic_sds_remote_device *sci_dev, - u32 frame_index); - -enum sci_status scic_sds_remote_device_ready_state_stop_handler( - struct scic_sds_remote_device *device); - -enum sci_status scic_sds_remote_device_ready_state_reset_handler( - struct scic_sds_remote_device *device); - -enum sci_status scic_sds_remote_device_general_frame_handler( - struct scic_sds_remote_device *sci_dev, - u32 frame_index); - -enum sci_status scic_sds_remote_device_general_event_handler( - struct scic_sds_remote_device *sci_dev, - u32 event_code); - -enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler( - struct scic_sds_remote_device *sci_dev); - - - #endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */ diff --git a/drivers/scsi/isci/smp_remote_device.c b/drivers/scsi/isci/smp_remote_device.c deleted file mode 100644 index 45340a5c99c..00000000000 --- a/drivers/scsi/isci/smp_remote_device.c +++ /dev/null @@ -1,310 +0,0 @@ -/* - * 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 "scic_sds_controller.h" -#include "scic_sds_port.h" -#include "remote_device.h" -#include "scic_sds_request.h" -#include "sci_environment.h" -#include "sci_util.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 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) { - status = scic_sds_remote_node_context_start_io(&device->rnc, request); - - if (status == SCI_SUCCESS) - status = scic_sds_request_start(request); - - if (status == SCI_SUCCESS) { - device->working_request = request; - - sci_base_state_machine_change_state( - &device->ready_substate_machine, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD - ); - } - - scic_sds_remote_device_start_request(device, 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 scic_sds_remote_device *device, - struct scic_sds_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 scic_sds_remote_device *device, - struct scic_sds_request *request) -{ - enum sci_status status; - struct scic_sds_request *sci_req; - - sci_req = (struct scic_sds_request *)request; - - status = scic_sds_io_request_complete(sci_req); - - if (status == SCI_SUCCESS) { - status = scic_sds_port_complete_io( - device->owning_port, device, sci_req); - - if (status == SCI_SUCCESS) { - scic_sds_remote_device_decrement_request_count(device); - sci_base_state_machine_change_state( - &device->ready_substate_machine, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE - ); - } else - dev_err(scirdev_to_dev(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__, - device, - sci_req, - device->owning_port, - status); - } - - return status; -} - -/** - * This is frame handler for smp device ready cmd substate. - * @sci_dev: 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 *sci_dev, - 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( - sci_dev->working_request, - frame_index - ); - - return status; -} - -/* --------------------------------------------------------------------------- */ - -static const struct scic_sds_remote_device_state_handler scic_sds_smp_remote_device_ready_substate_handler_table[] = { - [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_smp_remote_device_ready_idle_substate_start_io_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_remote_device_default_frame_handler - }, - [SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_default_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_smp_remote_device_ready_cmd_substate_start_io_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_smp_remote_device_ready_cmd_substate_frame_handler - } -}; - -/** - * - * @object: This is the 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 function sets the ready cmd substate handlers and reports the device as - * ready. none - */ -static void scic_sds_smp_remote_device_ready_idle_substate_enter(void *object) -{ - struct scic_sds_remote_device *sci_dev = object; - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; - struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); - - SET_STATE_HANDLER(sci_dev, - scic_sds_smp_remote_device_ready_substate_handler_table, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE); - - isci_remote_device_ready(ihost, idev); -} - -/** - * - * @object: This is the 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 - * function 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(void *object) -{ - struct scic_sds_remote_device *sci_dev = object; - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; - struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); - - BUG_ON(sci_dev->working_request == NULL); - - SET_STATE_HANDLER(sci_dev, - scic_sds_smp_remote_device_ready_substate_handler_table, - SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD); - - isci_remote_device_not_ready(ihost, idev, - SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED); -} - -/** - * - * @object: This is the 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(void *object) -{ - struct scic_sds_remote_device *sci_dev = object; - sci_dev->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, - }, -}; diff --git a/drivers/scsi/isci/stp_remote_device.c b/drivers/scsi/isci/stp_remote_device.c deleted file mode 100644 index 1853552bc25..00000000000 --- a/drivers/scsi/isci/stp_remote_device.c +++ /dev/null @@ -1,716 +0,0 @@ -/* - * 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 "intel_ata.h" -#include "intel_sata.h" -#include "intel_sat.h" -#include "sci_base_state.h" -#include "scic_sds_controller.h" -#include "scic_sds_port.h" -#include "remote_device.h" -#include "scic_sds_request.h" -#include "sci_environment.h" -#include "sci_util.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 scic_sds_remote_device *device, - struct scic_sds_request *request) -{ - enum sci_status status; - - status = scic_sds_io_request_complete(request); - - if (status == SCI_SUCCESS) { - status = scic_sds_port_complete_io( - device->owning_port, device, request); - - if (status == SCI_SUCCESS) { - scic_sds_remote_device_decrement_request_count(device); - if (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( - &device->ready_substate_machine, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET - ); - } else if (scic_sds_remote_device_get_request_count(device) == 0) { - sci_base_state_machine_change_state( - &device->ready_substate_machine, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE - ); - } - } - } - - 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, - 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 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->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(&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; -} - -/* - * ***************************************************************************** - * * 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 scic_sds_remote_device *sci_dev, - struct scic_sds_request *request) -{ - enum sci_status status; - struct isci_request *isci_request = request->ireq; - - - /* Will the port allow the io request to start? */ - status = sci_dev->owning_port->state_handlers->start_io_handler( - sci_dev->owning_port, sci_dev, request); - if (status != SCI_SUCCESS) - return status; - - status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request); - if (status != SCI_SUCCESS) - goto out; - - status = request->state_handlers->start_handler(request); - if (status != SCI_SUCCESS) - goto out; - - if (isci_sata_get_sat_protocol(isci_request) == SAT_PROTOCOL_FPDMA) { - sci_base_state_machine_change_state(&sci_dev->ready_substate_machine, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ); - } else { - sci_dev->working_request = request; - sci_base_state_machine_change_state(&sci_dev->ready_substate_machine, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD); - } -out: - scic_sds_remote_device_start_request(sci_dev, 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 *sci_dev, - u32 event_code) -{ - enum sci_status status; - - status = scic_sds_remote_device_general_event_handler(sci_dev, 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( - &sci_dev->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 scic_sds_remote_device *sci_dev, - struct scic_sds_request *request) -{ - enum sci_status status; - struct isci_request *isci_request = request->ireq; - - if (isci_sata_get_sat_protocol(isci_request) == SAT_PROTOCOL_FPDMA) { - status = sci_dev->owning_port->state_handlers->start_io_handler( - sci_dev->owning_port, - sci_dev, - request); - if (status != SCI_SUCCESS) - return status; - - status = scic_sds_remote_node_context_start_io(&sci_dev->rnc, request); - if (status != SCI_SUCCESS) - return status; - - status = request->state_handlers->start_handler(request); - - scic_sds_remote_device_start_request(sci_dev, 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. - * @sci_dev: 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 *sci_dev, - 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(sci_dev)->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)) { - sci_dev->not_ready_reason = - SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED; - - /* - * / @todo Check sactive and complete associated IO - * if any. - */ - - sci_base_state_machine_change_state( - &sci_dev->ready_substate_machine, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR - ); - } else if (frame_header->fis_type == SATA_FIS_TYPE_REGD2H && - (frame_header->status & ATA_STATUS_REG_ERROR_BIT)) { - - /* - * Some devices return D2H FIS when an NCQ error is detected. - * Treat this like an SDB error FIS ready reason. - */ - sci_dev->not_ready_reason = - SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED; - - sci_base_state_machine_change_state( - &sci_dev->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(sci_dev), 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 scic_sds_remote_device *device, - struct scic_sds_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 *sci_dev, - u32 suspend_type) -{ - enum sci_status status; - - status = scic_sds_remote_node_context_suspend(&sci_dev->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 *sci_dev, - 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( - sci_dev->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 scic_sds_remote_device *device, - struct scic_sds_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 scic_sds_remote_device *device, - struct scic_sds_request *request) -{ - struct scic_sds_request *sci_req = (struct scic_sds_request *)request; - enum sci_status status; - - status = scic_sds_io_request_complete(sci_req); - - if (status == SCI_SUCCESS) { - status = scic_sds_port_complete_io( - device->owning_port, device, sci_req - ); - - if (status == SCI_SUCCESS) - scic_sds_remote_device_decrement_request_count(device); - } - - 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 const struct scic_sds_remote_device_state_handler scic_sds_stp_remote_device_ready_substate_handler_table[] = { - [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_ready_state_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_stp_remote_device_ready_idle_substate_start_io_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_stp_remote_device_ready_idle_substate_event_handler, - .frame_handler = scic_sds_remote_device_default_frame_handler - }, - [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_ready_state_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_stp_remote_device_ready_cmd_substate_start_io_handler, - .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, - .suspend_handler = scic_sds_stp_remote_device_ready_cmd_substate_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_stp_remote_device_ready_cmd_substate_frame_handler - }, - [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_ready_state_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_stp_remote_device_ready_ncq_substate_start_io_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_stp_remote_device_ready_ncq_substate_frame_handler - }, - [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_ready_state_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_remote_device_default_start_request_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_remote_device_general_frame_handler - }, - [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = { - .start_handler = scic_sds_remote_device_default_start_handler, - .stop_handler = scic_sds_remote_device_ready_state_stop_handler, - .fail_handler = scic_sds_remote_device_default_fail_handler, - .destruct_handler = scic_sds_remote_device_default_destruct_handler, - .reset_handler = scic_sds_remote_device_ready_state_reset_handler, - .reset_complete_handler = scic_sds_remote_device_default_reset_complete_handler, - .start_io_handler = scic_sds_stp_remote_device_ready_await_reset_substate_start_io_handler, - .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, - .suspend_handler = scic_sds_remote_device_default_suspend_handler, - .resume_handler = scic_sds_remote_device_default_resume_handler, - .event_handler = scic_sds_remote_device_general_event_handler, - .frame_handler = scic_sds_remote_device_general_frame_handler - } -}; - -/* - * ***************************************************************************** - * * 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 *sci_dev = user_cookie; - struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; - - /* - * For NCQ operation we do not issue a - * scic_cb_remote_device_not_ready(). As a result, avoid sending - * the ready notification. - */ - if (sci_dev->ready_substate_machine.previous_state_id != - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ) - isci_remote_device_ready(ihost, idev); -} - -/* - * ***************************************************************************** - * * STP REMOTE DEVICE READY IDLE SUBSTATE - * ***************************************************************************** */ - -/** - * - * @device: This is the object which is cast into a - * struct scic_sds_remote_device object. - * - */ -static void scic_sds_stp_remote_device_ready_idle_substate_enter(void *device) -{ - struct scic_sds_remote_device *sci_dev = device; - - SET_STATE_HANDLER( - sci_dev, - scic_sds_stp_remote_device_ready_substate_handler_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE - ); - - sci_dev->working_request = NULL; - - if (scic_sds_remote_node_context_is_ready(&sci_dev->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( - sci_dev - ); - } else { - scic_sds_remote_node_context_resume( - &sci_dev->rnc, - scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handler, - sci_dev); - } -} - -static void scic_sds_stp_remote_device_ready_cmd_substate_enter(void *object) -{ - struct scic_sds_remote_device *sci_dev = object; - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; - struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); - - BUG_ON(sci_dev->working_request == NULL); - - SET_STATE_HANDLER(sci_dev, - scic_sds_stp_remote_device_ready_substate_handler_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD); - - isci_remote_device_not_ready(ihost, idev, - SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED); -} - -static void scic_sds_stp_remote_device_ready_ncq_substate_enter(void *object) -{ - struct scic_sds_remote_device *sci_dev = object; - SET_STATE_HANDLER(sci_dev, - scic_sds_stp_remote_device_ready_substate_handler_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ); -} - -static void scic_sds_stp_remote_device_ready_ncq_error_substate_enter( - void *object) -{ - struct scic_sds_remote_device *sci_dev = object; - struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev); - struct isci_host *ihost = scic->ihost; - struct isci_remote_device *idev = sci_dev_to_idev(sci_dev); - - SET_STATE_HANDLER(sci_dev, - scic_sds_stp_remote_device_ready_substate_handler_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR); - - if (sci_dev->not_ready_reason == - SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED) - isci_remote_device_not_ready(ihost, idev, sci_dev->not_ready_reason); -} - -/* - * ***************************************************************************** - * * STP REMOTE DEVICE READY AWAIT RESET SUBSTATE - * ***************************************************************************** */ - -/** - * The enter routine to READY AWAIT RESET substate. - * @device: This is the object which is cast into a - * struct scic_sds_remote_device object. - * - */ -static void scic_sds_stp_remote_device_ready_await_reset_substate_enter( - void *device) -{ - struct scic_sds_remote_device *sci_dev; - - sci_dev = (struct scic_sds_remote_device *)device; - - SET_STATE_HANDLER( - sci_dev, - scic_sds_stp_remote_device_ready_substate_handler_table, - SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET - ); -} - -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, - }, - [SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET] = { - .enter_state = scic_sds_stp_remote_device_ready_await_reset_substate_enter, - }, -};