]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - sys/arm/include/pcpu.h
Merge llvm, clang, lld, lldb, compiler-rt and libc++ r304460, and update
[FreeBSD/FreeBSD.git] / sys / arm / include / pcpu.h
1 /*-
2  * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *      from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
27  * $FreeBSD$
28  */
29
30 #ifndef _MACHINE_PCPU_H_
31 #define _MACHINE_PCPU_H_
32
33 #ifdef _KERNEL
34
35 #include <sys/_lock.h>
36 #include <sys/_mutex.h>
37
38 #define ALT_STACK_SIZE  128
39
40 struct vmspace;
41
42 #endif  /* _KERNEL */
43
44 #if __ARM_ARCH >= 6
45
46 #define PCPU_MD_FIELDS                                                  \
47         unsigned int pc_vfpsid;                                         \
48         unsigned int pc_vfpmvfr0;                                       \
49         unsigned int pc_vfpmvfr1;                                       \
50         struct pmap *pc_curpmap;                                        \
51         struct mtx pc_cmap_lock;                                        \
52         void *pc_cmap1_pte2p;                                           \
53         void *pc_cmap2_pte2p;                                           \
54         caddr_t pc_cmap1_addr;                                          \
55         caddr_t pc_cmap2_addr;                                          \
56         vm_offset_t pc_qmap_addr;                                       \
57         void *pc_qmap_pte2p;                                            \
58         unsigned int pc_dbreg[32];                                      \
59         int pc_dbreg_cmd;                                               \
60         char __pad[155]
61 #else
62 #define PCPU_MD_FIELDS                                                  \
63         char __pad[93]
64 #endif
65
66 #ifdef _KERNEL
67
68 #define PC_DBREG_CMD_NONE       0
69 #define PC_DBREG_CMD_LOAD       1
70
71 struct pcb;
72 struct pcpu;
73
74 extern struct pcpu *pcpup;
75
76 #if __ARM_ARCH >= 6
77 #define CPU_MASK (0xf)
78
79 #ifndef SMP
80 #define get_pcpu() (pcpup)
81 #else
82 #define get_pcpu() __extension__ ({                                     \
83         int id;                                                         \
84         __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id));      \
85         (pcpup + (id & CPU_MASK));                                      \
86     })
87 #endif
88
89 static inline struct thread *
90 get_curthread(void)
91 {
92         void *ret;
93
94         __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret));
95         return (ret);
96 }
97
98 static inline void
99 set_curthread(struct thread *td)
100 {
101
102         __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td));
103 }
104
105
106 static inline void *
107 get_tls(void)
108 {
109         void *tls;
110
111         /* TPIDRURW contains the authoritative value. */
112         __asm __volatile("mrc p15, 0, %0, c13, c0, 2" : "=r" (tls));
113         return (tls);
114 }
115
116 static inline void
117 set_tls(void *tls)
118 {
119
120         /*
121          * Update both TPIDRURW and TPIDRURO. TPIDRURW needs to be written
122          * first to ensure that a context switch between the two writes will
123          * still give the desired result of updating both.
124          */
125         __asm __volatile(
126             "mcr p15, 0, %0, c13, c0, 2\n"
127             "mcr p15, 0, %0, c13, c0, 3\n"
128              : : "r" (tls));
129 }
130
131 #define curthread get_curthread()
132
133 #else
134 #define get_pcpu()      pcpup
135 #endif
136
137 #define PCPU_GET(member)        (get_pcpu()->pc_ ## member)
138 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
139 #define PCPU_INC(member)        PCPU_ADD(member, 1)
140 #define PCPU_PTR(member)        (&get_pcpu()->pc_ ## member)
141 #define PCPU_SET(member,value)  (get_pcpu()->pc_ ## member = (value))
142
143 void pcpu0_init(void);
144 #endif  /* _KERNEL */
145
146 #endif  /* !_MACHINE_PCPU_H_ */