linux/drivers/scsi/isci/events.h

/*
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 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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 * it under the terms of version 2 of the GNU General Public License as
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 * General Public License for more details.
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 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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 * in the file called LICENSE.GPL.
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#ifndef _ISCI_EVENT_H_
#define _ISCI_EVENT_H_

/**
 * isci_event_timer_create() - This callback method asks the user to create a
 *    timer and provide a handle for this timer for use in further timer
 *    interactions.
 * @controller: This parameter specifies the controller with which this timer
 *    is to be associated.
 * @timer_callback: This parameter specifies the callback method to be invoked
 *    whenever the timer expires.
 * @cookie: This parameter specifies a piece of information that the user must
 *    retain.  This cookie is to be supplied by the user anytime a timeout
 *    occurs for the created timer.
 *
 * The "timer_callback" method should be executed in a mutually exlusive manner
 * from the controller completion handler handler. This method returns a handle
 * to a timer object created by the user.  The handle will be utilized for all
 * further interactions relating to this timer.
 */
void *isci_event_timer_create(
	struct scic_sds_controller *controller,
	void (*timer_callback)(void *),
	void *cookie);

/**
 * isci_event_timer_start() - This callback method asks the user to start the
 *    supplied timer.
 * @controller: This parameter specifies the controller with which this timer
 *    is to associated.
 * @timer: This parameter specifies the timer to be started.
 * @milliseconds: This parameter specifies the number of milliseconds for which
 *    to stall.  The operating system driver is allowed to round this value up
 *    where necessary.
 *
 * All timers in the system started by the SCI Core are one shot timers.
 * Therefore, the SCI user should make sure that it removes the timer from it's
 * list when a timer actually fires. Additionally, SCI Core user's should be
 * able to handle calls from the SCI Core to stop a timer that may already be
 * stopped. none
 */
void isci_event_timer_start(
	struct scic_sds_controller *controller,
	void *timer,
	u32 milliseconds);

/**
 * isci_event_timer_stop() - This callback method asks the user to stop the
 *    supplied timer.
 * @controller: This parameter specifies the controller with which this timer
 *    is to associated.
 * @timer: This parameter specifies the timer to be stopped.
 *
 */
void isci_event_timer_stop(
	struct scic_sds_controller *controller,
	void *timer);


void isci_event_timer_destroy(struct scic_sds_controller *scic, void *timer);

/**
 * isci_event_controller_start_complete() - This user callback will inform the
 *    user that the controller has finished the start process.
 * @controller: This parameter specifies the controller that was started.
 * @completion_status: This parameter specifies the results of the start
 *    operation.  SCI_SUCCESS indicates successful completion.
 *
 */
void isci_event_controller_start_complete(
	struct scic_sds_controller *controller,
	enum sci_status completion_status);

/**
 * isci_event_controller_stop_complete() - This user callback will inform the
 * user that the controller has finished the stop process.
 * @controller: This parameter specifies the controller that was stopped.
 * @completion_status: This parameter specifies the results of the stop
 *    operation.  SCI_SUCCESS indicates successful completion.
 *
 */
void isci_event_controller_stop_complete(
	struct scic_sds_controller *controller,
	enum sci_status completion_status);

/**
 * isci_event_io_request_complete() - This user callback will inform the user
 * that an IO request has completed.
 * @controller: This parameter specifies the controller on which the IO is
 *    completing.
 * @remote_device: This parameter specifies the remote device on which this IO
 *    request is completing.
 * @io_request: This parameter specifies the IO request that has completed.
 * @completion_status: This parameter specifies the results of the IO request
 *    operation.  SCI_SUCCESS indicates successful completion.
 *
 */
void isci_event_io_request_complete(
	struct scic_sds_controller *controller,
	struct scic_sds_remote_device *remote_device,
	struct scic_sds_request *scic_io_request,
	enum sci_io_status completion_status);

/**
 * isci_event_task_request_complete() - This user callback will inform the user
 *    that a task management request completed.
 * @controller: This parameter specifies the controller on which the task
 *    management request is completing.
 * @remote_device: This parameter specifies the remote device on which this
 *    task management request is completing.
 * @task_request: This parameter specifies the task management request that has
 *    completed.
 * @completion_status: This parameter specifies the results of the IO request
 *    operation.  SCI_SUCCESS indicates successful completion.
 *
 */
void isci_event_task_request_complete(
	struct scic_sds_controller *controller,
	struct scic_sds_remote_device *remote_device,
	struct scic_sds_request *scic_task_request,
	enum sci_task_status completion_status);

/**
 * isci_event_port_stop_complete() - This method informs the user when a stop
 *    operation on the port has completed.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.
 * @completion_status: This parameter specifies the status for the operation
 *    being completed.
 *
 */
void isci_event_port_stop_complete(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	enum sci_status completion_status);

/**
 * isci_event_port_hard_reset_complete() - This method informs the user when a
 *    hard reset on the port has completed.  This hard reset could have been
 *    initiated by the user or by the remote port.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.
 * @completion_status: This parameter specifies the status for the operation
 *    being completed.
 *
 */
void isci_event_port_hard_reset_complete(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	enum sci_status completion_status);

/**
 * isci_event_port_ready() - This method informs the user that the port is now
 * in a ready state and can be utilized to issue IOs.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.
 *
 */
void isci_event_port_ready(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port);

/**
 * isci_event_port_not_ready() - This method informs the user that the port is
 * now not in a ready (i.e. busy) state and can't be utilized to issue IOs.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.
 * @reason_code: This parameter specifies the reason for the port not ready
 *    callback.
 *
 */
void isci_event_port_not_ready(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	u32 reason_code);

/**
 * isci_event_port_invalid_link_up() - This method informs the SCI Core user
 * that a phy/link became ready, but the phy is not allowed in the port.  In
 * some situations the underlying hardware only allows for certain phy to port
 *    mappings.  If these mappings are violated, then this API is invoked.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.
 * @phy: This parameter specifies the phy that came ready, but the phy can't be
 *    a valid member of the port.
 *
 */
void isci_event_port_invalid_link_up(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	struct scic_sds_phy *phy);

/**
 * isci_event_port_bc_change_primitive_received() - This callback method informs
 *    the user that a broadcast change primitive was received.
 * @controller: This parameter represents the controller which contains the
 *    port.
 * @port: This parameter specifies the SCI port object for which the callback
 *    is being invoked.  For instances where the phy on which the primitive was
 *    received is not part of a port, this parameter will be
 *    NULL.
 * @phy: This parameter specifies the phy on which the primitive was received.
 *
 */
void isci_event_port_bc_change_primitive_received(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	struct scic_sds_phy *phy);

/**
 * isci_event_port_link_up() - This callback method informs the user that a phy
 *    has become operational and is capable of communicating with the remote
 *    end point.
 * @controller: This parameter represents the controller associated with the
 *    phy.
 * @port: This parameter specifies the port object for which the user callback
 *    is being invoked.  There may be conditions where this parameter can be
 *    NULL
 * @phy: This parameter specifies the phy object for which the user callback is
 *    being invoked.
 *
 */
void isci_event_port_link_up(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	struct scic_sds_phy *phy);

/**
 * isci_event_port_link_down() - This callback method informs the user that a
 * phy is no longer operational and is not capable of communicating with the
 *    remote end point.
 * @controller: This parameter represents the controller associated with the
 *    phy.
 * @port: This parameter specifies the port object for which the user callback
 *    is being invoked.  There may be conditions where this parameter can be
 *    NULL
 * @phy: This parameter specifies the phy object for which the user callback is
 *    being invoked.
 *
 */
void isci_event_port_link_down(
	struct scic_sds_controller *controller,
	struct scic_sds_port *port,
	struct scic_sds_phy *phy);

/**
 * isci_event_remote_device_start_complete() - This user callback method will
 *    inform the user that a start operation has completed.
 * @controller: This parameter specifies the core controller associated with
 *    the completion callback.
 * @remote_device: This parameter specifies the remote device associated with
 *    the completion callback.
 * @completion_status: This parameter specifies the completion status for the
 *    operation.
 *
 */
void isci_event_remote_device_start_complete(
	struct scic_sds_controller *controller,
	struct scic_sds_remote_device *remote_device,
	enum sci_status completion_status);

/**
 * isci_event_remote_device_stop_complete() - This user callback method will
 *    inform the user that a stop operation has completed.
 * @controller: This parameter specifies the core controller associated with
 *    the completion callback.
 * @remote_device: This parameter specifies the remote device associated with
 *    the completion callback.
 * @completion_status: This parameter specifies the completion status for the
 *    operation.
 *
 */
void isci_event_remote_device_stop_complete(
	struct scic_sds_controller *controller,
	struct scic_sds_remote_device *remote_device,
	enum sci_status completion_status);

/**
 * isci_event_remote_device_ready() - This user callback method will inform the
 *    user that a remote device is now capable of handling IO requests.
 * @controller: This parameter specifies the core controller associated with
 *    the completion callback.
 * @remote_device: This parameter specifies the remote device associated with
 *    the callback.
 *
 */
void isci_event_remote_device_ready(
	struct scic_sds_controller *controller,
	struct scic_sds_remote_device *remote_device);

/**
 * isci_event_remote_device_not_ready() - This user callback method will inform
 *    the user that a remote device is no longer capable of handling IO
 *    requests (until a ready callback is invoked).
 * @controller: This parameter specifies the core controller associated with
 *    the completion callback.
 * @remote_device: This parameter specifies the remote device associated with
 *    the callback.
 * @reason_code: This paramete specifies the reason the remote device is not
 *    ready.
 *
 */
void isci_event_remote_device_not_ready(
	struct scic_sds_controller *controller,
	struct scic_sds_remote_device *remote_device,
	u32 reason_code);

#endif