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/*
* Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/**
* @file sah_memory_mapper.h
*
* @brief Re-creates SAHARA data structures in Kernel memory such that they are
* suitable for DMA.
*
*/
#ifndef SAH_MEMORY_MAPPER_H
#define SAH_MEMORY_MAPPER_H
#include <sah_driver_common.h>
#include <sah_queue_manager.h>
/******************************************************************************
* External function declarations
******************************************************************************/
sah_Head_Desc *sah_Copy_Descriptors(fsl_shw_uco_t * user_ctx,
sah_Head_Desc * desc);
sah_Link *sah_Copy_Links(fsl_shw_uco_t * user_ctx, sah_Link * ptr);
sah_Head_Desc *sah_Physicalise_Descriptors(sah_Head_Desc * desc);
sah_Link *sah_Physicalise_Links (sah_Link *ptr);
sah_Head_Desc *sah_DePhysicalise_Descriptors (sah_Head_Desc *desc);
sah_Link *sah_DePhysicalise_Links (sah_Link *ptr);
sah_Link *sah_Make_Links(fsl_shw_uco_t * user_ctx,
sah_Link * ptr, sah_Link ** tail);
void sah_Destroy_Descriptors (sah_Head_Desc *desc);
void sah_Destroy_Links (sah_Link *link);
void sah_Free_Chained_Descriptors (sah_Head_Desc *desc);
void sah_Free_Chained_Links (sah_Link *link);
int sah_Init_Mem_Map (void);
void sah_Stop_Mem_Map (void);
int sah_Block_Add_Page (int big);
sah_Desc *sah_Alloc_Descriptor (void);
sah_Head_Desc *sah_Alloc_Head_Descriptor (void);
void sah_Free_Descriptor (sah_Desc *desc);
void sah_Free_Head_Descriptor (sah_Head_Desc *desc);
sah_Link *sah_Alloc_Link (void);
void sah_Free_Link (sah_Link *link);
void *wire_user_memory(void *address, uint32_t length, void **page_ctx);
void unwire_user_memory(void **page_ctx);
os_error_code map_user_memory(struct vm_area_struct *vma,
uint32_t physical_addr, uint32_t size);
os_error_code unmap_user_memory(uint32_t user_addr, uint32_t size);
#endif /* SAH_MEMORY_MAPPER_H */
/* End of sah_memory_mapper.h */
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