1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * arch/um/include/mem_user.h 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * BRIEF MODULE DESCRIPTION 5*4882a593Smuzhiyun * user side memory interface for support IO memory inside user mode linux 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Copyright (C) 2001 RidgeRun, Inc. 8*4882a593Smuzhiyun * Author: RidgeRun, Inc. 9*4882a593Smuzhiyun * Greg Lonnon glonnon@ridgerun.com or info@ridgerun.com 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it 12*4882a593Smuzhiyun * under the terms of the GNU General Public License as published by the 13*4882a593Smuzhiyun * Free Software Foundation; either version 2 of the License, or (at your 14*4882a593Smuzhiyun * option) any later version. 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 17*4882a593Smuzhiyun * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18*4882a593Smuzhiyun * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 19*4882a593Smuzhiyun * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20*4882a593Smuzhiyun * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21*4882a593Smuzhiyun * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 22*4882a593Smuzhiyun * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 23*4882a593Smuzhiyun * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24*4882a593Smuzhiyun * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25*4882a593Smuzhiyun * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26*4882a593Smuzhiyun * 27*4882a593Smuzhiyun * You should have received a copy of the GNU General Public License along 28*4882a593Smuzhiyun * with this program; if not, write to the Free Software Foundation, Inc., 29*4882a593Smuzhiyun * 675 Mass Ave, Cambridge, MA 02139, USA. 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #ifndef _MEM_USER_H 33*4882a593Smuzhiyun #define _MEM_USER_H 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun struct iomem_region { 36*4882a593Smuzhiyun struct iomem_region *next; 37*4882a593Smuzhiyun char *driver; 38*4882a593Smuzhiyun int fd; 39*4882a593Smuzhiyun int size; 40*4882a593Smuzhiyun unsigned long phys; 41*4882a593Smuzhiyun unsigned long virt; 42*4882a593Smuzhiyun }; 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun extern struct iomem_region *iomem_regions; 45*4882a593Smuzhiyun extern int iomem_size; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun #define ROUND_4M(n) ((((unsigned long) (n)) + (1 << 22)) & ~((1 << 22) - 1)) 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun extern int init_mem_user(void); 50*4882a593Smuzhiyun extern void setup_memory(void *entry); 51*4882a593Smuzhiyun extern unsigned long find_iomem(char *driver, unsigned long *len_out); 52*4882a593Smuzhiyun extern void mem_total_pages(unsigned long physmem, unsigned long iomem, 53*4882a593Smuzhiyun unsigned long highmem); 54*4882a593Smuzhiyun extern unsigned long get_vm(unsigned long len); 55*4882a593Smuzhiyun extern void setup_physmem(unsigned long start, unsigned long usable, 56*4882a593Smuzhiyun unsigned long len, unsigned long long highmem); 57*4882a593Smuzhiyun extern void add_iomem(char *name, int fd, unsigned long size); 58*4882a593Smuzhiyun extern unsigned long phys_offset(unsigned long phys); 59*4882a593Smuzhiyun extern void map_memory(unsigned long virt, unsigned long phys, 60*4882a593Smuzhiyun unsigned long len, int r, int w, int x); 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #endif 63