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 */
28
29 #ifdef __arm__
30 #include <arm/pcpu.h>
31 #else /* !__arm__ */
32
33 #ifndef _MACHINE_PCPU_H_
34 #define _MACHINE_PCPU_H_
35
36 #include <machine/cpu.h>
37 #include <machine/cpufunc.h>
38
39 typedef int (*pcpu_bp_harden)(void);
40 typedef int (*pcpu_ssbd)(int);
41 struct debug_monitor_state;
42
43 #define PCPU_MD_FIELDS \
44 u_int pc_acpi_id; /* ACPI CPU id */ \
45 u_int pc_midr; /* stored MIDR value */ \
46 uint64_t pc_clock; \
47 pcpu_bp_harden pc_bp_harden; \
48 pcpu_ssbd pc_ssbd; \
49 struct pmap *pc_curpmap; \
50 struct pmap *pc_curvmpmap; \
51 uint64_t pc_mpidr; \
52 u_int pc_bcast_tlbi_workaround; \
53 char __pad[197]
54
55 #ifdef _KERNEL
56
57 struct pcb;
58 struct pcpu;
59
60 register struct pcpu *pcpup __asm ("x18");
61
62 static inline struct pcpu *
get_pcpu(void)63 get_pcpu(void)
64 {
65 struct pcpu *pcpu;
66
67 __asm __volatile("mov %0, x18" : "=&r"(pcpu));
68 return (pcpu);
69 }
70
71 static inline struct thread *
get_curthread(void)72 get_curthread(void)
73 {
74 struct thread *td;
75
76 __asm __volatile("ldr %0, [x18]" : "=&r"(td));
77 return (td);
78 }
79
80 #define curthread get_curthread()
81
82 #define PCPU_GET(member) (pcpup->pc_ ## member)
83 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
84 #define PCPU_PTR(member) (&pcpup->pc_ ## member)
85 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value))
86
87 #define PCPU_GET_MPIDR(pc) ((pc)->pc_mpidr)
88
89 #endif /* _KERNEL */
90
91 #endif /* !_MACHINE_PCPU_H_ */
92
93 #endif /* !__arm__ */
94