pcpu.h revision 249265 
1/*-
2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * Copyright (c) Peter Wemm <peter@netplex.com.au>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *	from: src/sys/alpha/include/pcpu.h,v 1.15 2004/11/05 19:16:44 jhb
28 * $FreeBSD: head/sys/mips/include/pcpu.h 249265 2013-04-08 19:19:10Z glebius $
29 */
30
31#ifndef _MACHINE_PCPU_H_
32#define	_MACHINE_PCPU_H_
33
34#include <machine/pte.h>
35
36#define	PCPU_MD_COMMON_FIELDS						\
37	pd_entry_t	*pc_segbase;		/* curthread segbase */	\
38	struct	pmap	*pc_curpmap;		/* pmap of curthread */	\
39	u_int32_t	pc_next_asid;		/* next ASID to alloc */ \
40	u_int32_t	pc_asid_generation;	/* current ASID generation */ \
41	u_int		pc_pending_ipis;	/* IPIs pending to this CPU */
42
43#ifdef	__mips_n64
44#define	PCPU_MD_MIPS64_FIELDS						\
45	PCPU_MD_COMMON_FIELDS						\
46	char		__pad[61]
47#else
48#define	PCPU_MD_MIPS32_FIELDS						\
49	PCPU_MD_COMMON_FIELDS						\
50	char		__pad[133]
51#endif
52
53#ifdef	__mips_n64
54#define	PCPU_MD_FIELDS	PCPU_MD_MIPS64_FIELDS
55#else
56#define	PCPU_MD_FIELDS	PCPU_MD_MIPS32_FIELDS
57#endif
58
59#ifdef _KERNEL
60
61extern char pcpu_space[MAXCPU][PAGE_SIZE * 2];
62#define	PCPU_ADDR(cpu)		(struct pcpu *)(pcpu_space[(cpu)])
63
64extern struct pcpu *pcpup;
65#define	PCPUP	pcpup
66
67#define	PCPU_ADD(member, value)	(PCPUP->pc_ ## member += (value))
68#define	PCPU_GET(member)	(PCPUP->pc_ ## member)
69#define	PCPU_INC(member)	PCPU_ADD(member, 1)
70#define	PCPU_PTR(member)	(&PCPUP->pc_ ## member)
71#define	PCPU_SET(member,value)	(PCPUP->pc_ ## member = (value))
72#define PCPU_LAZY_INC(member)   (++PCPUP->pc_ ## member)
73
74#ifdef SMP
75/*
76 * Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'.
77 */
78void	mips_pcpu_tlb_init(struct pcpu *pcpu);
79#endif
80
81#endif	/* _KERNEL */
82
83#endif	/* !_MACHINE_PCPU_H_ */
84