freebsd-skq/sys/dev/isci/scil/scic_port.h

/*-
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 * redistributing this file, you may do so under either license.
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 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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 * in the file called LICENSE.GPL.
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 * BSD LICENSE
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 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
 * All rights reserved.
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 */
#ifndef _SCIC_PORT_H_
#define _SCIC_PORT_H_

/**
 * @file
 *
 * @brief This file contains all of the interface methods that can be called
 *        by an SCI Core user on a SAS or SATA port.
 */

#ifdef __cplusplus
extern "C" {
#endif // __cplusplus

#include <dev/isci/scil/sci_types.h>
#include <dev/isci/scil/sci_status.h>
#include <dev/isci/scil/intel_sas.h>

enum SCIC_PORT_NOT_READY_REASON_CODE
{
   SCIC_PORT_NOT_READY_NO_ACTIVE_PHYS,
   SCIC_PORT_NOT_READY_HARD_RESET_REQUESTED,
   SCIC_PORT_NOT_READY_INVALID_PORT_CONFIGURATION,
   SCIC_PORT_NOT_READY_RECONFIGURING,

   SCIC_PORT_NOT_READY_REASON_CODE_MAX
};

/**
 * @struct SCIC_PORT_END_POINT_PROPERTIES
 * @brief  This structure defines the properties that can be retrieved
 *         for each end-point local or remote (attached) port in the
 *         controller.
 */
typedef struct SCIC_PORT_END_POINT_PROPERTIES
{
   /**
    * This field indicates the SAS address for the associated end
    * point in the port.
    */
   SCI_SAS_ADDRESS_T  sas_address;

   /**
    * This field indicates the protocols supported by the associated
    * end-point in the port.
    */
   SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T  protocols;

} SCIC_PORT_END_POINT_PROPERTIES_T;

/**
 * @struct SCIC_PORT_PROPERTIES
 * @brief  This structure defines the properties that can be retrieved
 *         for each port in the controller.
 */
typedef struct SCIC_PORT_PROPERTIES
{
   /**
    * This field specifies the logical index of the port (0 relative).
    */
   U32  index;

   /**
    * This field indicates the local end-point properties for port.
    */
   SCIC_PORT_END_POINT_PROPERTIES_T  local;

   /**
    * This field indicates the remote (attached) end-point properties
    * for the port.
    */
   SCIC_PORT_END_POINT_PROPERTIES_T  remote;

   /**
    * This field specifies the phys contained inside the port.
    */
   U32  phy_mask;

} SCIC_PORT_PROPERTIES_T;

/**
 * @brief This method simply returns the properties regarding the
 *        port, such as: physical index, protocols, sas address, etc.
 *
 * @param[in]  port this parameter specifies the port for which to retrieve
 *             the physical index.
 * @param[out] properties This parameter specifies the properties
 *             structure into which to copy the requested information.
 *
 * @return Indicate if the user specified a valid port.
 * @retval SCI_SUCCESS This value is returned if the specified port was valid.
 * @retval SCI_FAILURE_INVALID_PORT This value is returned if the specified port
 *         is not valid.  When this value is returned, no data is copied to the
 *         properties output parameter.
 */
SCI_STATUS scic_port_get_properties(
   SCI_PORT_HANDLE_T        port,
   SCIC_PORT_PROPERTIES_T * properties
);

/**
 * @brief This method will add a phy to an existing port.
 *
 * @param[in]  port This parameter specifies the port in which to add a new
 *             phy.
 * @param[in]  phy This parameter specifies the phy to be added to the port.
 *
 * @return Indicate if the phy was successfully added to the port.
 * @retval SCI_SUCCESS This value is returned if the phy was successfully
 *         added to the port.
 * @retval SCI_FAILURE_INVALID_PORT This value is returned if the supplied
 *         port is not valid.
 * @retval SCI_FAILURE_INVALID_PHY This value is returned if the supplied
 *         phy is either invalid or already contained in another port.
 */
SCI_STATUS scic_port_add_phy(
   SCI_PORT_HANDLE_T port,
   SCI_PHY_HANDLE_T  phy
);

/**
 * @brief This method will remove a phy from an existing port.
 *
 * @param[in]  port This parameter specifies the port in which to remove a
 *             phy.
 * @param[in]  phy This parameter specifies the phy to be removed from the
 *             port.
 *
 * @return Indicate if the phy was successfully removed from the port.
 * @retval SCI_SUCCESS This value is returned if the phy was successfully
 *         removed from the port.
 * @retval SCI_FAILURE_INVALID_PORT This value is returned if the supplied
 *         port is not valid.
 * @retval SCI_FAILURE_INVALID_PHY This value is returned if the supplied
 *         phy is either invalid or
 *         not contained in the port.
 */
SCI_STATUS scic_port_remove_phy(
   SCI_PORT_HANDLE_T  port,
   SCI_PHY_HANDLE_T   phy
);

/**
 * @brief This method will request the SCI implementation to perform a
 *        HARD RESET on the SAS Port.  If/When the HARD RESET completes
 *        the SCI user will be notified via an SCI OS callback indicating
 *        a direct attached device was found.
 *
 * @note The SCI User callback in SCIC_USER_CALLBACKS_T will only be called
 *       once for each phy in the SAS Port at completion of the hard reset
 *       sequence.
 *
 * @param[in]  port a handle corresponding to the SAS port to be
 *             hard reset.
 * @param[in]  reset_timeout This parameter specifies the number of
 *             milliseconds in which the port reset operation should complete.
 *
 * @return Return a status indicating whether the hard reset started
 *         successfully.
 * @retval SCI_SUCCESS This value is returned if the hard reset operation
 *         started successfully.
 */
SCI_STATUS scic_port_hard_reset(
   SCI_PORT_HANDLE_T port,
   U32               reset_timeout
);

/**
 * @brief This API method enables the broadcast change notification from
 *        underneath hardware.
 *
 * @param[in] port The port upon which broadcast change notifications
 *            (BCN) are to be enabled.
 *
 * @return none
 */
void scic_port_enable_broadcast_change_notification(
   SCI_PORT_HANDLE_T  port
);

#ifdef __cplusplus
}
#endif // __cplusplus

#endif // _SCIC_PORT_H_