FreeBSD/Linux Kernel Cross Reference
sys/mips/include/tlb.h
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 * $FreeBSD$
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
52 extern int num_tlbentries;
53
54 void tlb_insert_wired(unsigned, vm_offset_t, pt_entry_t, pt_entry_t);
55 void tlb_invalidate_address(struct pmap *, vm_offset_t);
56 void tlb_invalidate_all(void);
57 void tlb_invalidate_all_user(struct pmap *);
58 void tlb_invalidate_range(struct pmap *, vm_offset_t, vm_offset_t);
59 void tlb_save(void);
60 void tlb_update(struct pmap *, vm_offset_t, pt_entry_t);
61
62 #endif /* !_MACHINE_TLB_H_ */
Cache object: f843538dab44917a5fd955cb0d6853f7
|