63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
|
|
* 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
|