tlb.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2004-2010 Juli Mallett <jmallett@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/mips/include/tlb.h 330897 2018-03-14 03:19:51Z eadler $
29 */
30
31#ifndef	_MACHINE_TLB_H_
32#define	_MACHINE_TLB_H_
33
34/*
35 * The first TLB entry that write random hits.
36 * TLB entry 0 maps the kernel stack of the currently running thread
37 * TLB entry 1 maps the pcpu area of processor (only for SMP builds)
38 */
39#define	KSTACK_TLB_ENTRY	0
40#ifdef SMP
41#define	PCPU_TLB_ENTRY		1
42#define	VMWIRED_ENTRIES		2
43#else
44#define	VMWIRED_ENTRIES		1
45#endif	/* SMP */
46
47/*
48 * The number of process id entries.
49 */
50#define	VMNUM_PIDS		256
51
52extern int num_tlbentries;
53
54void tlb_insert_wired(unsigned, vm_offset_t, pt_entry_t, pt_entry_t);
55void tlb_invalidate_address(struct pmap *, vm_offset_t);
56void tlb_invalidate_all(void);
57void tlb_invalidate_all_user(struct pmap *);
58void tlb_invalidate_range(struct pmap *, vm_offset_t, vm_offset_t);
59void tlb_save(void);
60void tlb_update(struct pmap *, vm_offset_t, pt_entry_t);
61
62#endif /* !_MACHINE_TLB_H_ */
63