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/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* File: scsi_user_dma.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 4/91
*
* Defines for Mach 2.5 compat, user-space DMA routines
*/
/* There is one such structure per I/O device
that needs to xfer data to/from user space */
typedef struct fdma {
vm_offset_t kernel_virtual;
vm_size_t max_data;
vm_offset_t user_virtual;
int xfer_size_rnd;
} *fdma_t;
extern int
fdma_init(/* fdma_t, vm_size_t */),
fdma_map(/* fdma_t, struct buf* */),
fdma_unmap(/* fdma_t, struct buf* */);
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