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/*
* arch/um/include/mem_user.h
*
* BRIEF MODULE DESCRIPTION
* user side memory interface for support IO memory inside user mode linux
*
* Copyright (C) 2001 RidgeRun, Inc.
* Author: RidgeRun, Inc.
* Greg Lonnon glonnon@ridgerun.com or info@ridgerun.com
*
* 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 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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.
*
* 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 _MEM_USER_H
#define _MEM_USER_H
struct iomem_region {
struct iomem_region *next;
char *driver;
int fd;
int size;
unsigned long phys;
unsigned long virt;
};
extern struct iomem_region *iomem_regions;
extern int iomem_size;
#define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1))
extern int init_mem_user(void);
extern void setup_memory(void *entry);
extern unsigned long find_iomem(char *driver, unsigned long *len_out);
extern int init_maps(unsigned long physmem, unsigned long iomem,
unsigned long highmem);
extern unsigned long get_vm(unsigned long len);
extern void setup_physmem(unsigned long start, unsigned long usable,
unsigned long len, unsigned long long highmem);
extern void add_iomem(char *name, int fd, unsigned long size);
extern unsigned long phys_offset(unsigned long phys);
extern void map_memory(unsigned long virt, unsigned long phys,
unsigned long len, int r, int w, int x);
#endif