?? mem_user.h
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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_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: */
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