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
39typedef int (*pcpu_bp_harden)(void);
40typedef int (*pcpu_ssbd)(int);
41struct 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	/* Store as two u_int values to preserve KBI */			\
52	uint64_t pc_mpidr;						\
53	u_int	pc_bcast_tlbi_workaround;				\
54	char __pad[197]
55
56#ifdef _KERNEL
57
58struct pcb;
59struct pcpu;
60
61register struct pcpu *pcpup __asm ("x18");
62
63static inline struct pcpu *
64get_pcpu(void)
65{
66	struct pcpu *pcpu;
67
68	__asm __volatile("mov   %0, x18" : "=&r"(pcpu));
69	return (pcpu);
70}
71
72static inline struct thread *
73get_curthread(void)
74{
75	struct thread *td;
76
77	__asm __volatile("ldr	%0, [x18]" : "=&r"(td));
78	return (td);
79}
80
81#define	curthread get_curthread()
82
83#define	PCPU_GET(member)	(pcpup->pc_ ## member)
84#define	PCPU_ADD(member, value)	(pcpup->pc_ ## member += (value))
85#define	PCPU_PTR(member)	(&pcpup->pc_ ## member)
86#define	PCPU_SET(member,value)	(pcpup->pc_ ## member = (value))
87
88#define	PCPU_GET_MPIDR(pc)	((pc)->pc_mpidr)
89
90#endif	/* _KERNEL */
91
92#endif	/* !_MACHINE_PCPU_H_ */
93
94#endif /* !__arm__ */