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6. diva_dma.h

/*
 *
 Copyright (c) Eicon Networks, 2002.
 *
 This source file is supplied for the use with
 Eicon Networks range of DIVA Server Adapters.
 *
 Eicon File Revision :    2.1
 *
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2, or (at your option)
 any later version.
 *
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */
#ifndef __DIVA_DMA_MAPPING_IFC_H__
#define __DIVA_DMA_MAPPING_IFC_H__
typedef struct _diva_dma_map_entry  diva_dma_map_entry_t;
struct _diva_dma_map_entry *diva_alloc_dma_map(void *os_context, int nentries);
void diva_init_dma_map_entry(struct _diva_dma_map_entry *pmap,
			     int nr, void *virt, dword phys,
			     void *addr_handle);
int diva_alloc_dma_map_entry(struct _diva_dma_map_entry *pmap);
void diva_free_dma_map_entry(struct _diva_dma_map_entry *pmap, int entry);
void diva_get_dma_map_entry(struct _diva_dma_map_entry *pmap, int nr,
			    void **pvirt, dword *pphys);
void diva_free_dma_mapping(struct _diva_dma_map_entry *pmap);
/*
  Functionality to be implemented by OS wrapper
  and running in process context
*/
void diva_init_dma_map(void *hdev,
		       struct _diva_dma_map_entry **ppmap,
		       int nentries);
void diva_free_dma_map(void *hdev,
		       struct _diva_dma_map_entry *pmap);
void *diva_get_entry_handle(struct _diva_dma_map_entry *pmap, int nr);
#endif