2 * Copyright (c) 1990 The Regents of the University of California.
3 * Copyright (c) 2014 The FreeBSD Foundation
6 * This code is derived from software contributed to Berkeley by
9 * Portions of this software were developed by Andrew Turner
10 * under sponsorship from the FreeBSD Foundation
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * from: @(#)cpu.h 5.4 (Berkeley) 5/9/91
37 * from: FreeBSD: src/sys/i386/include/cpu.h,v 1.62 2001/06/29
41 #ifndef _MACHINE_CPU_H_
42 #define _MACHINE_CPU_H_
44 #include <machine/atomic.h>
45 #include <machine/frame.h>
47 #define TRAPF_PC(tfp) ((tfp)->tf_lr)
48 #define TRAPF_USERMODE(tfp) (((tfp)->tf_elr & (1ul << 63)) == 0)
50 #define cpu_getstack(td) ((td)->td_frame->tf_sp)
51 #define cpu_setstack(td, sp) ((td)->td_frame->tf_sp = (sp))
52 #define cpu_spinwait() /* nothing */
54 /* Extract CPU affinity levels 0-3 */
55 #define CPU_AFF0(mpidr) (u_int)(((mpidr) >> 0) & 0xff)
56 #define CPU_AFF1(mpidr) (u_int)(((mpidr) >> 8) & 0xff)
57 #define CPU_AFF2(mpidr) (u_int)(((mpidr) >> 16) & 0xff)
58 #define CPU_AFF3(mpidr) (u_int)(((mpidr) >> 32) & 0xff)
59 #define CPU_AFF_MASK 0xff00ffffffUL /* Mask affinity fields in MPIDR_EL1 */
66 extern uint64_t __cpu_affinity[];
68 void cpu_halt(void) __dead2;
69 void cpu_reset(void) __dead2;
70 void fork_trampoline(void);
71 void identify_cpu(void);
74 #define CPU_AFFINITY(cpu) __cpu_affinity[(cpu)]
76 static __inline uint64_t
80 /* TODO: This is bogus */
84 #define ADDRESS_TRANSLATE_FUNC(stage) \
85 static inline uint64_t \
86 arm64_address_translate_ ##stage (uint64_t addr) \
91 "at " __STRING(stage) ", %1 \n" \
92 "mrs %0, par_el1" : "=r"(ret) : "r"(addr)); \
97 ADDRESS_TRANSLATE_FUNC(s1e0r)
98 ADDRESS_TRANSLATE_FUNC(s1e0w)
99 ADDRESS_TRANSLATE_FUNC(s1e1r)
100 ADDRESS_TRANSLATE_FUNC(s1e1w)
104 #endif /* !_MACHINE_CPU_H_ */