2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3 * Copyright (c) Peter Wemm <peter@netplex.com.au>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
30 #ifndef _MACHINE_PCPU_H_
31 #define _MACHINE_PCPU_H_
33 #include <machine/cpufunc.h>
34 #include <machine/slb.h>
35 #include <machine/tlb.h>
40 #define PCPU_MD_COMMON_FIELDS \
42 struct pmap *pc_curpmap; /* current pmap */ \
43 struct thread *pc_fputhread; /* current fpu user */ \
44 struct thread *pc_vecthread; /* current vec user */ \
48 volatile int pc_awake; \
49 uint32_t pc_ipimask; \
50 register_t pc_tempsave[CPUSAVE_LEN]; \
51 register_t pc_disisave[CPUSAVE_LEN]; \
52 register_t pc_dbsave[CPUSAVE_LEN];
54 #define PCPU_MD_AIM32_FIELDS \
57 #define PCPU_MD_AIM64_FIELDS \
58 struct slb pc_slb[64]; \
59 struct slb **pc_userslb; \
60 register_t pc_slbsave[18]; \
61 uint8_t pc_slbstack[1024]; \
65 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM64_FIELDS
67 #define PCPU_MD_AIM_FIELDS PCPU_MD_AIM32_FIELDS
70 #define BOOKE_CRITSAVE_LEN (CPUSAVE_LEN + 2)
71 #define BOOKE_TLB_MAXNEST 3
72 #define BOOKE_TLB_SAVELEN 16
73 #define BOOKE_TLBSAVE_LEN (BOOKE_TLB_SAVELEN * BOOKE_TLB_MAXNEST)
75 #define PCPU_MD_BOOKE_FIELDS \
76 register_t pc_booke_critsave[BOOKE_CRITSAVE_LEN]; \
77 register_t pc_booke_mchksave[CPUSAVE_LEN]; \
78 register_t pc_booke_tlbsave[BOOKE_TLBSAVE_LEN]; \
79 register_t pc_booke_tlb_level; \
80 uint32_t *pc_booke_tlb_lock; \
84 /* Definitions for register offsets within the exception tmp save areas */
85 #define CPUSAVE_R27 0 /* where r27 gets saved */
86 #define CPUSAVE_R28 1 /* where r28 gets saved */
87 #define CPUSAVE_R29 2 /* where r29 gets saved */
88 #define CPUSAVE_R30 3 /* where r30 gets saved */
89 #define CPUSAVE_R31 4 /* where r31 gets saved */
90 #define CPUSAVE_AIM_DAR 5 /* where SPR_DAR gets saved */
91 #define CPUSAVE_AIM_DSISR 6 /* where SPR_DSISR gets saved */
92 #define CPUSAVE_BOOKE_DEAR 5 /* where SPR_DEAR gets saved */
93 #define CPUSAVE_BOOKE_ESR 6 /* where SPR_ESR gets saved */
94 #define CPUSAVE_SRR0 7 /* where SRR0 gets saved */
95 #define CPUSAVE_SRR1 8 /* where SRR1 gets saved */
97 /* Book-E TLBSAVE is more elaborate */
98 #define TLBSAVE_BOOKE_LR 0
99 #define TLBSAVE_BOOKE_CR 1
100 #define TLBSAVE_BOOKE_SRR0 2
101 #define TLBSAVE_BOOKE_SRR1 3
102 #define TLBSAVE_BOOKE_R20 4
103 #define TLBSAVE_BOOKE_R21 5
104 #define TLBSAVE_BOOKE_R22 6
105 #define TLBSAVE_BOOKE_R23 7
106 #define TLBSAVE_BOOKE_R24 8
107 #define TLBSAVE_BOOKE_R25 9
108 #define TLBSAVE_BOOKE_R26 10
109 #define TLBSAVE_BOOKE_R27 11
110 #define TLBSAVE_BOOKE_R28 12
111 #define TLBSAVE_BOOKE_R29 13
112 #define TLBSAVE_BOOKE_R30 14
113 #define TLBSAVE_BOOKE_R31 15
116 #define PCPU_MD_FIELDS \
117 PCPU_MD_COMMON_FIELDS \
121 #define PCPU_MD_FIELDS \
122 PCPU_MD_COMMON_FIELDS \
127 * Catch-all for ports (e.g. lsof, used by gtop)
129 #ifndef PCPU_MD_FIELDS
130 #define PCPU_MD_FIELDS \
131 int pc_md_placeholder[32]
136 #define pcpup ((struct pcpu *) powerpc_get_pcpup())
138 #ifdef AIM /* Book-E not yet adapted */
139 static __inline __pure2 struct thread *
144 __asm __volatile("mr %0,13" : "=r"(td));
146 __asm __volatile("mr %0,2" : "=r"(td));
150 #define curthread (__curthread())
153 #define PCPU_GET(member) (pcpup->pc_ ## member)
156 * XXX The implementation of this operation should be made atomic
157 * with respect to preemption.
159 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
160 #define PCPU_INC(member) PCPU_ADD(member, 1)
161 #define PCPU_PTR(member) (&pcpup->pc_ ## member)
162 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value))
166 #endif /* !_MACHINE_PCPU_H_ */