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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  * $FreeBSD$
28  */
29
30 #ifndef _MACHINE_PCPU_H_
31 #define _MACHINE_PCPU_H_
32
33 #include <machine/cpufunc.h>
34 #include <machine/tlb.h>
35
36 struct pmap;
37 #define CPUSAVE_LEN     8
38
39 #define PCPU_MD_COMMON_FIELDS                                           \
40         int             pc_inside_intr;                                 \
41         struct pmap     *pc_curpmap;            /* current pmap */      \
42         struct thread   *pc_fputhread;          /* current fpu user */  \
43         struct thread   *pc_vecthread;          /* current vec user */  \
44         uintptr_t       pc_hwref;                                       \
45         uint32_t        pc_pir;                                         \
46         int             pc_bsp;                                         \
47         volatile int    pc_awake;                                       \
48         uint32_t        pc_ipimask;                                     \
49         register_t      pc_tempsave[CPUSAVE_LEN];                       \
50         register_t      pc_disisave[CPUSAVE_LEN];                       \
51         register_t      pc_dbsave[CPUSAVE_LEN];
52
53 #define PCPU_MD_AIM_FIELDS
54
55 #define BOOKE_CRITSAVE_LEN      (CPUSAVE_LEN + 2)
56 #define BOOKE_TLB_MAXNEST       3
57 #define BOOKE_TLB_SAVELEN       16
58 #define BOOKE_TLBSAVE_LEN       (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST)
59
60 #define PCPU_MD_BOOKE_FIELDS                                            \
61         register_t      pc_booke_critsave[BOOKE_CRITSAVE_LEN];          \
62         register_t      pc_booke_mchksave[CPUSAVE_LEN];                 \
63         register_t      pc_booke_tlbsave[BOOKE_TLBSAVE_LEN];            \
64         register_t      pc_booke_tlb_level;                             \
65         uint32_t        *pc_booke_tlb_lock;                             \
66         int             pc_tid_next;
67
68 /* Definitions for register offsets within the exception tmp save areas */
69 #define CPUSAVE_R28     0               /* where r28 gets saved */
70 #define CPUSAVE_R29     1               /* where r29 gets saved */
71 #define CPUSAVE_R30     2               /* where r30 gets saved */
72 #define CPUSAVE_R31     3               /* where r31 gets saved */
73 #define CPUSAVE_AIM_DAR         4       /* where SPR_DAR gets saved */
74 #define CPUSAVE_AIM_DSISR       5       /* where SPR_DSISR gets saved */
75 #define CPUSAVE_BOOKE_DEAR      4       /* where SPR_DEAR gets saved */
76 #define CPUSAVE_BOOKE_ESR       5       /* where SPR_ESR gets saved */
77 #define CPUSAVE_SRR0    6               /* where SRR0 gets saved */
78 #define CPUSAVE_SRR1    7               /* where SRR1 gets saved */
79
80 /* Book-E TLBSAVE is more elaborate */
81 #define TLBSAVE_BOOKE_LR        0
82 #define TLBSAVE_BOOKE_CR        1
83 #define TLBSAVE_BOOKE_SRR0      2
84 #define TLBSAVE_BOOKE_SRR1      3
85 #define TLBSAVE_BOOKE_R20       4
86 #define TLBSAVE_BOOKE_R21       5
87 #define TLBSAVE_BOOKE_R22       6
88 #define TLBSAVE_BOOKE_R23       7
89 #define TLBSAVE_BOOKE_R24       8
90 #define TLBSAVE_BOOKE_R25       9
91 #define TLBSAVE_BOOKE_R26       10
92 #define TLBSAVE_BOOKE_R27       11
93 #define TLBSAVE_BOOKE_R28       12
94 #define TLBSAVE_BOOKE_R29       13
95 #define TLBSAVE_BOOKE_R30       14
96 #define TLBSAVE_BOOKE_R31       15
97
98 #ifndef COMPILING_LINT
99 #ifdef AIM
100 #define PCPU_MD_FIELDS          \
101         PCPU_MD_COMMON_FIELDS   \
102         PCPU_MD_AIM_FIELDS
103 #endif
104 #ifdef E500
105 #define PCPU_MD_FIELDS          \
106         PCPU_MD_COMMON_FIELDS   \
107         PCPU_MD_BOOKE_FIELDS
108 #endif
109 #else
110 #define PCPU_MD_FIELDS          \
111         PCPU_MD_COMMON_FIELDS   \
112         PCPU_MD_AIM_FIELDS      \
113         PCPU_MD_BOOKE_FIELDS
114 #endif
115 /*
116  * Catch-all for ports (e.g. lsof, used by gtop)
117  */
118 #ifndef PCPU_MD_FIELDS
119 #define PCPU_MD_FIELDS                                                  \
120         int             pc_md_placeholder
121 #endif
122
123 #ifdef _KERNEL
124
125 #define pcpup   ((struct pcpu *) powerpc_get_pcpup())
126
127 #define PCPU_GET(member)        (pcpup->pc_ ## member)
128
129 /*
130  * XXX The implementation of this operation should be made atomic
131  * with respect to preemption.
132  */
133 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
134 #define PCPU_INC(member)        PCPU_ADD(member, 1)
135 #define PCPU_PTR(member)        (&pcpup->pc_ ## member)
136 #define PCPU_SET(member,value)  (pcpup->pc_ ## member = (value))
137
138 #endif  /* _KERNEL */
139
140 #endif  /* !_MACHINE_PCPU_H_ */