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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/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
61 extern char pcpu_space[MAXCPU][PAGE_SIZE * 2];
62 #define PCPU_ADDR(cpu)          (struct pcpu *)(pcpu_space[(cpu)])
63
64 extern 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  */
78 void    mips_pcpu_tlb_init(struct pcpu *pcpu);
79 #endif
80
81 #endif  /* _KERNEL */
82
83 #endif  /* !_MACHINE_PCPU_H_ */