| Current Path : /sys/dev/isci/scil/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/dev/isci/scil/scif_io_request.h |
/*-
* 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_io_request.h 231689 2012-02-14 15:58:49Z jimharris $
*/
#ifndef _SCIF_IO_REQUEST_H_
#define _SCIF_IO_REQUEST_H_
/**
* @file
*
* @brief This file contains the structures and interface methods that
* can be referenced and used by the SCI user for the SCI IO request
* object.
*/
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#include <dev/isci/scil/sci_types.h>
#include <dev/isci/scil/sci_status.h>
/**
* @brief This method simply returns the size required to construct an SCI
* based IO request object (includes core & framework object size).
*
* @return Return the size of the SCI IO request object.
*/
U32 scif_io_request_get_object_size(
void
);
/**
* @brief This method simply the number of data bytes transfered for a
* STP or SSP io request.
*
* @param[in] scif_io_request This parameter specifies the framework IO
* handle to retrieve the number of data bytes transferred.
*
* @return Return the number of data bytes transfered by the io request
*/
U32 scif_io_request_get_number_of_bytes_transferred(
void * scif_io_request
);
/**
* @brief This method is called by the SCIF user to construct an IO request.
* This method will construct a SCIC IO request internally. The memory
* for the core IO request is passed as a parameter to this method.
*
* @note The SCI framework implementation will create an association between
* the user IO request object and the framework IO request object.
*
* @param[in] scif_controller the handle to the framework controller object
* for which to build an IO request.
* @param[in] scif_remote_device This parameter specifies the framework
* remote device with which this IO request is to be associated.
* @param[in] io_tag This parameter specifies the IO tag to be associated
* with this request. If SCI_CONTROLLER_INVALID_IO_TAG is
* passed, then a copy of the request is built internally. The
* request will be copied into the actual controller request
* memory when the IO tag is allocated internally during the
* scif_controller_start_io() method.
* @param[in] user_io_request_object This parameter specifies the user
* IO request to be utilized during IO construction. This IO
* pointer will become the associated object for the framework
* IO request object.
* @param[in] io_request_memory This parameter specifies the memory
* to be utilized in the construction of the framework IO request.
* @param[in] scif_io_request This parameter specifies the handle to be
* utilized for all further interactions with this IO request
* object.
*
* @return Indicate if the controller successfully built the IO request.
* @retval SCI_SUCCESS This value is returned if the IO request was
* successfully built.
*/
SCI_STATUS scif_io_request_construct(
SCI_CONTROLLER_HANDLE_T scif_controller,
SCI_REMOTE_DEVICE_HANDLE_T scif_remote_device,
U16 io_tag,
void * user_io_request_object,
void * io_request_memory,
SCI_IO_REQUEST_HANDLE_T * scif_io_request
);
/**
* @brief This method simply returns the SCI Core object handle that is
* associated with the supplied SCI Framework object.
*
* @param[in] scif_io_request This parameter specifies the framework IO
* for which to return the associated core IO request object.
*
* @return This method returns a handle to the core IO request object
* associated with the framework IO request object.
* @retval SCI_INVALID_HANDLE This return value indicates that the SCI Core
* IO request handle for the supplied framework IO is invalid.
*/
SCI_IO_REQUEST_HANDLE_T scif_io_request_get_scic_handle(
SCI_IO_REQUEST_HANDLE_T scif_io_request
);
/**
* @brief This method returns the address of the response information unit.
* This call is only valid if the completion status for the io request
* is SCI_FAILURE_IO_RESPONSE_VALID.
*
* @param[in] scif_io_request This parameter specifies the framework IO
* for which to return the associated core IO request object.
*
* @return The address for the response information unit.
*/
void * scif_io_request_get_response_iu_address(
SCI_IO_REQUEST_HANDLE_T scif_io_request
);
/**
* @brief This method will build an Framework SSP Passthrough IO request based
* on the user information supplied in the pass-through IO request object.
* In case of pass through request construction, the driver creates the
* sci core request object and pass that to the framework
*
* @pre
*
* @param[in] scif_controller. Not used in the function but kept to maintain uniformity
* with other io construct functions
* @param[in] scif_remote_device. This parameter is the device.
* @param[in] scic_io_request. This parameter is the scic request already constructed
* @param[in] user_io_request_object, the user io request
* @param[in] io_request_memory, the scif offset in the user_io_request_object.
*
* @param[out] the contructed scif request. This points to the same location as io_request_memory
*
* @return Indicate if framework IO request is successfully built.
* @retval SCI_SUCCESS This value is returned if the IO request was
* successfully built.
*/
SCI_STATUS scif_io_request_construct_with_core (
SCI_CONTROLLER_HANDLE_T scif_controller,
SCI_REMOTE_DEVICE_HANDLE_T scif_remote_device,
void * scic_io_request,
void * user_io_request_object,
void * io_request_memory,
SCI_IO_REQUEST_HANDLE_T * scif_io_request
);
/**
* @brief This method will build the basic scif and scic io request object based
* on the user information supplied in the pass-through IO request object.
* This function will not build the protocol specific part of the request
* but set up the memory areas of scif and scic set the association.
*
* @pre
*
* @param[in] scif_controller the handle to the framework controller object
* for which to build an IO request.
* @param[in] scif_remote_device This parameter specifies the framework
* remote device with which this IO request is to be associated.
* @param[in] io_tag This parameter specifies the IO tag to be associated
* with this request. If SCI_CONTROLLER_INVALID_IO_TAG is
* passed, then a copy of the request is built internally. The
* request will be copied into the actual controller request
* memory when the IO tag is allocated internally during the
* scif_controller_start_io() method.
* @param[in] user_io_request_object This parameter specifies the user
* IO request to be utilized during IO construction. This IO
* pointer will become the associated object for the framework
* IO request object.
* @param[in] io_request_memory This parameter specifies the memory
* to be utilized in the construction of the framework IO request.
* @param[in] scif_io_request This parameter specifies the handle to be
* utilized for all further interactions with this IO request
* object.
*
* @return Indicate if the controller successfully built the IO request.
* @retval SCI_SUCCESS This value is returned if the IO request was
* successfully built.
*/
SCI_STATUS scif_request_construct(
SCI_CONTROLLER_HANDLE_T scif_controller,
SCI_REMOTE_DEVICE_HANDLE_T scif_remote_device,
U16 io_tag,
void * user_io_request_object,
void * io_request_memory,
SCI_IO_REQUEST_HANDLE_T * scif_io_request
);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // _SCIF_IO_REQUEST_H_