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 <machine/acle-compat.h>
36 #include <machine/cpuconf.h>
37
38 #define ALT_STACK_SIZE 128
39
40 struct vmspace;
41
42 #endif /* _KERNEL */
43
44 #if __ARM_ARCH >= 6
45 #define PCPU_MD_FIELDS \
46 unsigned int pc_vfpsid; \
47 unsigned int pc_vfpmvfr0; \
48 unsigned int pc_vfpmvfr1; \
49 struct pmap *pc_curpmap; \
50 vm_offset_t pc_qmap_addr; \
51 void *pc_qmap_pte; \
52 char __pad[133]
53 #else
54 #define PCPU_MD_FIELDS \
55 vm_offset_t qmap_addr; \
56 void *pc_qmap_pte; \
57 char __pad[149]
58 #endif
59
60 #ifdef _KERNEL
61
62 struct pcb;
63 struct pcpu;
64
65 extern struct pcpu *pcpup;
66
67 #if __ARM_ARCH >= 6
68 #define CPU_MASK (0xf)
69
70 #ifndef SMP
71 #define get_pcpu() (pcpup)
72 #else
73 #define get_pcpu() __extension__ ({ \
74 int id; \
75 __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \
76 (pcpup + (id & CPU_MASK)); \
77 })
78 #endif
79
80 static inline struct thread *
get_curthread(void)81 get_curthread(void)
82 {
83 void *ret;
84
85 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret));
86 return (ret);
87 }
88
89 static inline void
set_curthread(struct thread * td)90 set_curthread(struct thread *td)
91 {
92
93 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td));
94 }
95
96
97 static inline void *
get_tls(void)98 get_tls(void)
99 {
100 void *tls;
101
102 __asm __volatile("mrc p15, 0, %0, c13, c0, 3" : "=r" (tls));
103 return (tls);
104 }
105
106 static inline void
set_tls(void * tls)107 set_tls(void *tls)
108 {
109
110 __asm __volatile("mcr p15, 0, %0, c13, c0, 3" : : "r" (tls));
111 }
112
113 #define curthread get_curthread()
114
115 #else
116 #define get_pcpu() pcpup
117 #endif
118
119 #define PCPU_GET(member) (get_pcpu()->pc_ ## member)
120 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
121 #define PCPU_INC(member) PCPU_ADD(member, 1)
122 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
123 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
124
125 void pcpu0_init(void);
126 #endif /* _KERNEL */
127
128 #endif /* !_MACHINE_PCPU_H_ */
129