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 * $FreeBSD$
29 */
30
31#ifndef _MACHINE_PCPU_H_
32#define	_MACHINE_PCPU_H_
33
34#include <machine/cpufunc.h>
35#include <machine/pte.h>
36
37#define	PCPU_MD_COMMON_FIELDS						\
38	pd_entry_t	*pc_segbase;		/* curthread segbase */	\
39	struct	pmap	*pc_curpmap;		/* pmap of curthread */	\
40	u_int32_t	pc_next_asid;		/* next ASID to alloc */ \
41	u_int32_t	pc_asid_generation;	/* current ASID generation */ \
42	u_int		pc_pending_ipis;	/* IPIs pending to this CPU */
43
44#ifdef	__mips_n64
45#define	PCPU_MD_MIPS64_FIELDS						\
46	PCPU_MD_COMMON_FIELDS						\
47	char		__pad[61]
48#else
49#define	PCPU_MD_MIPS32_FIELDS						\
50	PCPU_MD_COMMON_FIELDS						\
51	char		__pad[133]
52#endif
53
54#ifdef	__mips_n64
55#define	PCPU_MD_FIELDS	PCPU_MD_MIPS64_FIELDS
56#else
57#define	PCPU_MD_FIELDS	PCPU_MD_MIPS32_FIELDS
58#endif
59
60#ifdef _KERNEL
61
62extern char pcpu_space[MAXCPU][PAGE_SIZE * 2];
63#define	PCPU_ADDR(cpu)		(struct pcpu *)(pcpu_space[(cpu)])
64
65extern struct pcpu *pcpup;
66#define	PCPUP	pcpup
67
68#define	PCPU_ADD(member, value)	(PCPUP->pc_ ## member += (value))
69#define	PCPU_GET(member)	(PCPUP->pc_ ## member)
70#define	PCPU_INC(member)	PCPU_ADD(member, 1)
71#define	PCPU_PTR(member)	(&PCPUP->pc_ ## member)
72#define	PCPU_SET(member,value)	(PCPUP->pc_ ## member = (value))
73#define PCPU_LAZY_INC(member)   (++PCPUP->pc_ ## member)
74
75#ifdef SMP
76/*
77 * Instantiate the wired TLB entry at PCPU_TLB_ENTRY to map 'pcpu' at 'pcpup'.
78 */
79void	mips_pcpu_tlb_init(struct pcpu *pcpu);
80#endif
81
82#endif	/* _KERNEL */
83
84#endif	/* !_MACHINE_PCPU_H_ */
85