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/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Copyright 2003 PathScale, Inc.
* Licensed under the GPL
*/
#include "linux/stddef.h"
#include "linux/sched.h"
#include "linux/mm.h"
#include "asm/page.h"
#include "asm/pgtable.h"
#include "asm/mmu.h"
#include "user_util.h"
#include "mem_user.h"
#include "mem.h"
#include "skas.h"
#include "os.h"
#include "tlb.h"
static void do_ops(int fd, struct host_vm_op *ops, int last)
{
struct host_vm_op *op;
int i;
for(i = 0; i <= last; i++){
op = &ops[i];
switch(op->type){
case MMAP:
map(fd, op->u.mmap.addr, op->u.mmap.len,
op->u.mmap.r, op->u.mmap.w, op->u.mmap.x,
op->u.mmap.fd, op->u.mmap.offset);
break;
case MUNMAP:
unmap(fd, (void *) op->u.munmap.addr,
op->u.munmap.len);
break;
case MPROTECT:
protect(fd, op->u.mprotect.addr, op->u.mprotect.len,
op->u.mprotect.r, op->u.mprotect.w,
op->u.mprotect.x);
break;
default:
printk("Unknown op type %d in do_ops\n", op->type);
break;
}
}
}
static void fix_range(struct mm_struct *mm, unsigned long start_addr,
unsigned long end_addr, int force)
{
int fd = mm->context.skas.mm_fd;
fix_range_common(mm, start_addr, end_addr, force, fd, do_ops);
}
void __flush_tlb_one_skas(unsigned long addr)
{
flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE);
}
void flush_tlb_range_skas(struct vm_area_struct *vma, unsigned long start,
unsigned long end)
{
if(vma->vm_mm == NULL)
flush_tlb_kernel_range_common(start, end);
else fix_range(vma->vm_mm, start, end, 0);
}
void flush_tlb_mm_skas(struct mm_struct *mm)
{
/* Don't bother flushing if this address space is about to be
* destroyed.
*/
if(atomic_read(&mm->mm_users) == 0)
return;
fix_range(mm, 0, host_task_size, 0);
}
void force_flush_all_skas(void)
{
fix_range(current->mm, 0, host_task_size, 1);
}
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