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/*-
* 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.
*
* 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.
*
* $FreeBSD: release/9.1.0/sys/dev/isci/scil/scif_remote_device.h 231689 2012-02-14 15:58:49Z jimharris $
*/
#ifndef _SCIF_REMOTE_DEVICE_H_
#define _SCIF_REMOTE_DEVICE_H_
/**
* @file
*
* @brief This file contains all of the interface methods that can be called
* by an SCI Framework user on a remote device object. The
* framework remote device object provides management of resets for
* the remote device, IO thresholds, potentially NCQ tag management,
* etc.
*/
#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>
/**
* This constant is utilized to inform the user that there is no defined
* maximum request queue depth associated with a remote device.
*/
#define SCIF_REMOTE_DEVICE_NO_MAX_QUEUE_DEPTH 0xFFFF
/**
* @brief This method simply returns the maximum memory space needed to
* store a remote device object. The value returned includes enough
* space for the framework and core device objects.
*
* @return a positive integer value indicating the size (in bytes) of the
* remote device object.
*/
U32 scif_remote_device_get_object_size(
void
);
/**
* @brief This method performs the construction common to all device object
* types in the framework.
*
* @note
* - Remote device objects in the core are a limited resource. Since
* the framework construction/destruction methods wrap the core, the
* user must ensure that a construct or destruct method is never
* invoked when an existing construct or destruct method is ongoing.
* This method shall be utilized for discovered direct attached
* devices.
* - It isn't necessary to call scif_remote_device_destruct() for
* device objects that have only called this method for construction.
* Once subsequent construction methods have been invoked (e.g.
* scif_remote_device_da_construct()), then destruction should occur.
*
* @param[in] domain This parameter specifies the domain in which this
* remote device is contained.
* @param[in] remote_device_memory This parameter specifies the memory
* location into which this method shall construct the new
* framework device object.
* @param[out] new_scif_remote_device_handle This parameter specifies the
* handle to be used to communicate with the newly constructed
* framework remote device.
*
* @return none
*/
void scif_remote_device_construct(
SCI_DOMAIN_HANDLE_T domain,
void * remote_device_memory,
SCI_REMOTE_DEVICE_HANDLE_T * new_scif_remote_device_handle
);
/**
* @brief This method constructs a new framework remote device object. The
* remote device object shall remember it's counterpart core device
* object as well as the domain in which it is contained.
*
* @note Remote device objects in the core are a limited resource. Since
* the framework construction/destruction methods wrap the core, the
* user must ensure that a construct or destruct method is never
* invoked when an existing construct or destruct method is ongoing.
* This method shall be utilized for discovered direct attached
* devices.
*
* @pre The user must have previously called scif_remote_device_construct()
*
* @param[in] remote_device This parameter specifies the framework device
* for which to perform direct attached specific construction.
* @param[in] sas_address This parameter specifies the SAS address of the
* remote device object being constructed.
* @param[in] protocols This parameter specifies the protocols supported
* by the remote device to be constructed.
*
* @return Indicate if the remote device was successfully constructed.
* @retval SCI_SUCCESS This value is returned if the remote device was
* successfully constructed.
* @retval SCI_FAILURE_DEVICE_EXISTS Returned if the device has already
* been constructed.
* @retval SCI_FAILURE_INSUFFICIENT_RESOURCES This value is returned if
* the core controller associated with the supplied parameters
* is unable to support additional remote devices.
*/
SCI_STATUS scif_remote_device_da_construct(
SCI_REMOTE_DEVICE_HANDLE_T remote_device,
SCI_SAS_ADDRESS_T * sas_address,
SCI_SAS_IDENTIFY_ADDRESS_FRAME_PROTOCOLS_T * protocols
);
/**
* @brief This method constructs a new framework remote device object. The
* remote device object shall remember it's counterpart core device
* object as well as the domain in which it is contained.
*
* @pre The user must have previously called scif_remote_device_construct()
*
* @note Remote device objects in the core are a limited resource. Since
* the framework construction/destruction methods wrap the core, the
* user must ensure that a construct or destruct method is never
* invoked when an existing construct or destruct method is ongoing.
* This method shall be utilized for discovered expander attached
* devices.
*
* @param[in] remote_device This parameter specifies the framework device
* for which to perform expander specific construction.
* @param[in] containing_device This parameter specifies the remote
* device (i.e. an expander) that contains the device being
* constructed.
* @param[in] smp_response This parameter specifies the SMP_RESPONSE_DISCOVER
* associated with the remote device being constructed.
*
* @return Indicate if the remote device was successfully constructed.
* @retval SCI_SUCCESS This value is returned if the remote device was
* successfully constructed.
* @retval SCI_FAILURE_DEVICE_EXISTS Returned if the device has already
* been constructed.
* @retval SCI_FAILURE_INSUFFICIENT_RESOURCES This value is returned if
* the core controller associated with the supplied parameters
* is unable to support additional remote devices.
*/
SCI_STATUS scif_remote_device_ea_construct(
SCI_REMOTE_DEVICE_HANDLE_T remote_device,
SCI_REMOTE_DEVICE_HANDLE_T containing_device,
SMP_RESPONSE_DISCOVER_T * smp_response
);
/**
* @brief This method is utilized to free up a framework's remote
* device object.
*
* @note Remote device objects in the core are a limited resource. Since
* the framework construction/destruction methods wrap the core, the
* user must ensure that a construct or destruct method is never
* invoked when an existing construct or destruct method is ongoing.
*
* @param[in] remote_device This parameter specifies the remote device to be
* destructed.
*
* @return The return value shall indicate if the device was successfully
* destructed or if some failure occurred.
* @retval SCI_STATUS This value is returned if the device is successfully
* destructed.
* @retval SCI_FAILURE_INVALID_REMOTE_DEVICE This value is returned if the
* supplied device isn't valid (e.g. it's already been destructed,
* the handle isn't valid, etc.).
*/
SCI_STATUS scif_remote_device_destruct(
SCI_REMOTE_DEVICE_HANDLE_T remote_device
);
/**
* @brief This method simply returns the SCI Core object handle that is
* associated with the supplied SCI Framework object.
*
* @param[in] remote_device This parameter specifies the framework device
* for which to return the associated core remote device.
*
* @return This method returns a handle to the core remote device object
* associated with the framework remote device object.
* @retval SCI_INVALID_HANDLE This return value indicates that the SCI Core
* remote device handle for the supplied framework device is invalid.
*/
SCI_REMOTE_DEVICE_HANDLE_T scif_remote_device_get_scic_handle(
SCI_REMOTE_DEVICE_HANDLE_T remote_device
);
/**
* @brief This method returns the maximum queue depth supported for the
* supplied target by this SCI Framework impementation.
*
* @param[in] remote_device This parameter specifies the framework
* device for which to return the maximum queue depth.
*
* @return This method returns a value indicating the maximum number of
* IO requests that can be outstanding for the target at any
* point in time.
* @retval SCIF_REMOTE_DEVICE_NO_MAX_QUEUE_DEPTH This value is returned
* when there is no defined maximum queue depth for the target.
*/
U16 scif_remote_device_get_max_queue_depth(
SCI_REMOTE_DEVICE_HANDLE_T remote_device
);
/**
* @brief This method will return the handle to the parent device of the
* remote device.
*
* @param[in] remote_device This parameter specifies the device for which
* to return the parent device.
* @param[out] containing_device This parameter specifies the device
* handle, from the remote device object, which indicate
* the parent device of the supplied remote_device.
*
* @return none
*/
SCI_STATUS scif_remote_device_get_containing_device(
SCI_REMOTE_DEVICE_HANDLE_T remote_device,
SCI_REMOTE_DEVICE_HANDLE_T * containing_device
);
/**
* @brief This method returns the number of IO currently started
* to the supplied target. It does not include task
* management requests.
*
* @param[in] remote_device This parameter specifies the framework
* device for which to return the number of started IO.
*
* @return This method returns a value indicating the number of started
* IO requests.
*/
U32 scif_remote_device_get_started_io_count(
SCI_REMOTE_DEVICE_HANDLE_T remote_device
);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // _SCIF_REMOTE_DEVICE_H_