1/*-
2 * Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef	_MACHINE_TLB_H_
30#define	_MACHINE_TLB_H_
31
32/*
33 * The first TLB entry that write random hits.
34 * TLB entry 0 maps the kernel stack of the currently running thread
35 * TLB entry 1 maps the pcpu area of processor (only for SMP builds)
36 */
37#define	KSTACK_TLB_ENTRY	0
38#ifdef SMP
39#define	PCPU_TLB_ENTRY		1
40#define	VMWIRED_ENTRIES		2
41#else
42#define	VMWIRED_ENTRIES		1
43#endif	/* SMP */
44
45/*
46 * The number of process id entries.
47 */
48#define	VMNUM_PIDS		256
49
50extern int num_tlbentries;
51
52void tlb_insert_wired(unsigned, vm_offset_t, pt_entry_t, pt_entry_t);
53void tlb_invalidate_address(struct pmap *, vm_offset_t);
54void tlb_invalidate_all(void);
55void tlb_invalidate_all_user(struct pmap *);
56void tlb_invalidate_range(struct pmap *, vm_offset_t, vm_offset_t);
57void tlb_save(void);
58void tlb_update(struct pmap *, vm_offset_t, pt_entry_t);
59
60#endif /* !_MACHINE_TLB_H_ */
61