mirror of https://github.com/dzavalishin/oskit/
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1996-2000 University of Utah and the Flux Group.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This file is part of the Flux OSKit. The OSKit is free software, also known
|
||
|
|
* as "open source;" you can redistribute it and/or modify it under the terms
|
||
|
|
* of the GNU General Public License (GPL), version 2, as published by the Free
|
||
|
|
* Software Foundation (FSF). To explore alternate licensing terms, contact
|
||
|
|
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
|
||
|
|
*
|
||
|
|
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
|
||
|
|
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||
|
|
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
|
||
|
|
* received a copy of the GPL along with the OSKit; see the file COPYING. If
|
||
|
|
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Private header file for SVM
|
||
|
|
*/
|
||
|
|
#ifndef _SVM_INT_H_
|
||
|
|
#define _SVM_INT_H__
|
||
|
|
|
||
|
|
#include <oskit/svm.h>
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <oskit/amm.h>
|
||
|
|
#include <oskit/error.h>
|
||
|
|
#include <oskit/debug.h>
|
||
|
|
#include <oskit/com/services.h>
|
||
|
|
#include <oskit/com/lock_mgr.h>
|
||
|
|
#include <oskit/com/lock.h>
|
||
|
|
#include <oskit/io/absio.h>
|
||
|
|
#include <oskit/machine/physmem.h>
|
||
|
|
#include "machine/svm.h"
|
||
|
|
|
||
|
|
/* #define DEBUG_SVM WhyNot */
|
||
|
|
/* #define DEBUG_SVM_PAGEOUT WhyNot */
|
||
|
|
|
||
|
|
extern amm_t svm_amm;
|
||
|
|
extern int svm_enabled;
|
||
|
|
extern int svm_paging;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Thread-safe locking support. Very simple; use a single lock to
|
||
|
|
* protect the enture SVM system since there is no per-thread state,
|
||
|
|
* only global state.
|
||
|
|
*/
|
||
|
|
extern oskit_lock_t *svm_lock;
|
||
|
|
#define SVM_LOCK() if (svm_lock) oskit_lock_lock(svm_lock)
|
||
|
|
#define SVM_UNLOCK() if (svm_lock) oskit_lock_unlock(svm_lock)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Application level SEGV handler for page faults. The return values
|
||
|
|
* are specified in the external svm.h header.
|
||
|
|
*/
|
||
|
|
extern int (*svm_segv_handler)(oskit_addr_t la, int rw);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This flag value is or'ed in with the protection for physical memory
|
||
|
|
* regions that are under the control of the LMM. This allows us to
|
||
|
|
* associate protections with them, but not deallocate them.
|
||
|
|
*/
|
||
|
|
#define SVM_PROT_PHYS SVM_PROT_RESVD
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Internal trap handler.
|
||
|
|
*/
|
||
|
|
extern int svm_page_fault_handler(struct trap_state *ts);
|
||
|
|
|
||
|
|
#define ptob(x) ((x) << PAGE_SHIFT)
|
||
|
|
#define btop(x) ((x) >> PAGE_SHIFT)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Internal prototypes
|
||
|
|
*/
|
||
|
|
int svm_fault(oskit_addr_t vaddr, int eflags);
|
||
|
|
void svm_pageout(void);
|
||
|
|
void svm_pageout_page(oskit_addr_t vaddt);
|
||
|
|
void svm_pagein_page(oskit_addr_t vaddt);
|
||
|
|
void svm_redzone_init(void);
|
||
|
|
int svm_pager_init(oskit_absio_t *pager_absio);
|
||
|
|
int svm_swapread(int diskpage, oskit_addr_t buf);
|
||
|
|
int svm_swapwrite(int diskpage, oskit_addr_t buf);
|
||
|
|
int svm_getdiskpage(void);
|
||
|
|
void svm_freediskpage(int diskpage);
|
||
|
|
oskit_addr_t svm_alloc_physpage(void);
|
||
|
|
void svm_dealloc_physpage(oskit_addr_t paddr);
|
||
|
|
oskit_size_t svm_physmem_avail(void);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These must be defined in machine dependent code.
|
||
|
|
*/
|
||
|
|
int svm_map_range(oskit_addr_t va, oskit_addr_t pa,
|
||
|
|
oskit_size_t size, unsigned int mapping_bits);
|
||
|
|
int svm_unmap_range(oskit_addr_t va, oskit_size_t size);
|
||
|
|
int svm_find_mapping(oskit_addr_t va, oskit_addr_t *pa,
|
||
|
|
unsigned int *mbits);
|
||
|
|
int svm_prot_range(oskit_addr_t va, oskit_size_t len,
|
||
|
|
unsigned int prot);
|
||
|
|
int svm_change_mapping(oskit_addr_t va, oskit_addr_t pa,
|
||
|
|
unsigned int mbits);
|
||
|
|
void svm_machdep_init(void);
|
||
|
|
int svm_mem_map_phys(oskit_addr_t pa, oskit_size_t size,
|
||
|
|
void **addr, int flags);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Ptov table.
|
||
|
|
*/
|
||
|
|
extern oskit_addr_t *svm_ptov;
|
||
|
|
|
||
|
|
#define SVM_NULL_PTOV ((oskit_addr_t) -1)
|
||
|
|
|
||
|
|
#define SVM_PTOV(paddr) \
|
||
|
|
(svm_ptov[btop((oskit_addr_t) paddr - phys_mem_min)])
|
||
|
|
#endif
|