b1603638e3
- s/desciptor/descriptor/ MFC after: 5 days
184 lines
6.3 KiB
C
184 lines
6.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#ifndef _SCI_MEMORY_DESCRIPTOR_LIST_H_
|
|
#define _SCI_MEMORY_DESCRIPTOR_LIST_H_
|
|
|
|
/**
|
|
* @file
|
|
*
|
|
* @brief This file contains all of the basic data types utilized by an
|
|
* SCI user or implementor.
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif // __cplusplus
|
|
|
|
#include <dev/isci/scil/sci_types.h>
|
|
|
|
/**
|
|
* @name SCI_MDE_ATTRIBUTES
|
|
*
|
|
* These constants depict memory attributes for the Memory
|
|
* Descriptor Entries (MDEs) contained in the MDL.
|
|
*/
|
|
/*@{*/
|
|
#define SCI_MDE_ATTRIBUTE_CACHEABLE 0x0001
|
|
#define SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS 0x0002
|
|
/*@}*/
|
|
|
|
/**
|
|
* @struct SCI_PHYSICAL_MEMORY_DESCRIPTOR
|
|
* @brief This structure defines a description of a memory location for
|
|
* the SCI implementation.
|
|
*/
|
|
typedef struct SCI_PHYSICAL_MEMORY_DESCRIPTOR
|
|
{
|
|
/**
|
|
* This field contains the virtual address associated with this descriptor
|
|
* element. This field shall be zero when the descriptor is retrieved from
|
|
* the SCI implementation. The user shall set this field prior
|
|
* sci_controller_start()
|
|
*/
|
|
void * virtual_address;
|
|
|
|
/**
|
|
* This field contains the physical address associated with this descriptor
|
|
* element. This field shall be zero when the descriptor is retrieved from
|
|
* the SCI implementation. The user shall set this field prior
|
|
* sci_controller_start()
|
|
*/
|
|
SCI_PHYSICAL_ADDRESS physical_address;
|
|
|
|
/**
|
|
* This field contains the size requirement for this memory descriptor.
|
|
* A value of zero for this field indicates the end of the descriptor
|
|
* list. The value should be treated as read only for an SCI user.
|
|
*/
|
|
U32 constant_memory_size;
|
|
|
|
/**
|
|
* This field contains the alignment requirement for this memory
|
|
* descriptor. A value of zero for this field indicates the end of the
|
|
* descriptor list. All other values indicate the number of bytes to
|
|
* achieve the necessary alignment. The value should be treated as
|
|
* read only for an SCI user.
|
|
*/
|
|
U32 constant_memory_alignment;
|
|
|
|
/**
|
|
* This field contains an indication regarding the desired memory
|
|
* attributes for this memory descriptor entry.
|
|
* Notes:
|
|
* - If the cacheable attribute is set, the user can allocate
|
|
* memory that is backed by cache for better performance. It
|
|
* is not required that the memory be backed by cache.
|
|
* - If the physically contiguous attribute is set, then the
|
|
* entire memory must be physically contiguous across all
|
|
* page boundaries.
|
|
*/
|
|
U16 constant_memory_attributes;
|
|
|
|
} SCI_PHYSICAL_MEMORY_DESCRIPTOR_T;
|
|
|
|
/**
|
|
* @brief This method simply rewinds the MDL iterator back to the first memory
|
|
* descriptor entry in the list.
|
|
*
|
|
* @param[in] mdl This parameter specifies the memory descriptor list that
|
|
* is to be rewound.
|
|
*
|
|
* @return none
|
|
*/
|
|
void sci_mdl_first_entry(
|
|
SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl
|
|
);
|
|
|
|
/**
|
|
* @brief This method simply updates the "current" pointer to the next
|
|
* sequential memory descriptor.
|
|
*
|
|
* @param[in] mdl This parameter specifies the memory descriptor list for
|
|
* which to return the next memory descriptor entry in the list.
|
|
*
|
|
* @return none.
|
|
*/
|
|
void sci_mdl_next_entry(
|
|
SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl
|
|
);
|
|
|
|
/**
|
|
* @brief This method simply returns the current memory descriptor entry.
|
|
*
|
|
* @param[in] mdl This parameter specifies the memory descriptor list for
|
|
* which to return the current memory descriptor entry.
|
|
*
|
|
* @return This method returns a pointer to the current physical memory
|
|
* descriptor in the MDL.
|
|
* @retval NULL This value is returned if there are no descriptors in the
|
|
* list.
|
|
*/
|
|
SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * sci_mdl_get_current_entry(
|
|
SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl
|
|
);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif // __cplusplus
|
|
|
|
#endif // _SCI_MEMORY_DESCRIPTOR_LIST_H_
|
|
|