/* * 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_Hstruct mem_region {	char *driver;	unsigned long start_pfn;	unsigned long start;	unsigned long len;	void *mem_map;	int fd;};extern struct mem_region *regions[];extern struct mem_region physmem_region;#define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1))extern unsigned long host_task_size;extern unsigned long task_size;extern int init_mem_user(void);extern int create_mem_file(unsigned long len);extern void setup_range(int fd, char *driver, unsigned long start,			unsigned long pfn, unsigned long total, int need_vm, 			struct mem_region *region, void *reserved);extern void setup_memory(void *entry);extern unsigned long find_iomem(char *driver, unsigned long *len_out);extern int init_maps(struct mem_region *region);extern int nregions(void);extern int reserve_vm(unsigned long start, unsigned long end, void *e);extern unsigned long get_vm(unsigned long len);extern void setup_physmem(unsigned long start, unsigned long usable,			  unsigned long len);extern int setup_region(struct mem_region *region, void *entry);extern void add_iomem(char *name, int fd, unsigned long size);extern struct mem_region *phys_region(unsigned long phys);extern unsigned long phys_offset(unsigned long phys);extern void unmap_physmem(void);extern int map_memory(unsigned long virt, unsigned long phys, 		      unsigned long len, int r, int w, int x);extern int protect_memory(unsigned long addr, unsigned long len, 			  int r, int w, int x, int must_succeed);extern unsigned long get_kmem_end(void);#endif/* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically * adjust the settings for this buffer only.  This must remain at the end * of the file. * --------------------------------------------------------------------------- * Local variables: * c-file-style: "linux" * End: */