cpu.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (C) 1995-1997 Wolfgang Solfrank.
5 * Copyright (C) 1995-1997 TooLs GmbH.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by TooLs GmbH.
19 * 4. The name of TooLs GmbH may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 *
33 *	$NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $
34 * $FreeBSD: stable/11/sys/powerpc/include/cpu.h 330897 2018-03-14 03:19:51Z eadler $
35 */
36
37#ifndef _MACHINE_CPU_H_
38#define	_MACHINE_CPU_H_
39
40#include <machine/frame.h>
41#include <machine/pcb.h>
42#include <machine/psl.h>
43
44/*
45 * CPU Feature Attributes
46 *
47 * These are defined in the PowerPC ELF ABI for the AT_HWCAP vector,
48 * and are exported to userland via the machdep.cpu_features
49 * sysctl.
50 */
51
52extern int cpu_features;
53extern int cpu_features2;
54
55#define	PPC_FEATURE_32		0x80000000	/* Always true */
56#define	PPC_FEATURE_64		0x40000000	/* Defined on a 64-bit CPU */
57#define	PPC_FEATURE_HAS_ALTIVEC	0x10000000
58#define	PPC_FEATURE_HAS_FPU	0x08000000
59#define	PPC_FEATURE_HAS_MMU	0x04000000
60#define	PPC_FEATURE_UNIFIED_CACHE 0x01000000
61#define	PPC_FEATURE_BOOKE	0x00008000
62#define	PPC_FEATURE_SMT		0x00004000
63#define	PPC_FEATURE_ARCH_2_05	0x00001000
64#define	PPC_FEATURE_HAS_DFP	0x00000400
65#define	PPC_FEATURE_ARCH_2_06	0x00000100
66#define	PPC_FEATURE_HAS_VSX	0x00000080
67
68#define	PPC_FEATURE2_ARCH_2_07	0x80000000
69#define	PPC_FEATURE2_HAS_HTM	0x40000000
70#define	PPC_FEATURE2_HAS_VCRYPTO 0x02000000
71
72#define	PPC_FEATURE_BITMASK						\
73	"\20"								\
74	"\040PPC32\037PPC64\035ALTIVEC\034FPU\033MMU\031UNIFIEDCACHE"	\
75	"\020BOOKE\017SMT\015ARCH205\013DFP\011ARCH206\010VSX"
76#define	PPC_FEATURE2_BITMASK						\
77	"\20"								\
78	"\040ARCH207\037HTM\032VCRYPTO"
79
80#define	TRAPF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
81#define	TRAPF_PC(frame)		((frame)->srr0)
82
83/*
84 * CTL_MACHDEP definitions.
85 */
86#define	CPU_CACHELINE	1
87
88static __inline u_int64_t
89get_cyclecount(void)
90{
91	u_int32_t _upper, _lower;
92	u_int64_t _time;
93
94	__asm __volatile(
95		"mftb %0\n"
96		"mftbu %1"
97		: "=r" (_lower), "=r" (_upper));
98
99	_time = (u_int64_t)_upper;
100	_time = (_time << 32) + _lower;
101	return (_time);
102}
103
104#define	cpu_getstack(td)	((td)->td_frame->fixreg[1])
105#define	cpu_spinwait()		__asm __volatile("or 27,27,27") /* yield */
106
107extern char btext[];
108extern char etext[];
109
110void	cpu_halt(void);
111void	cpu_reset(void);
112void	cpu_sleep(void);
113void	flush_disable_caches(void);
114void	fork_trampoline(void);
115void	swi_vm(void *);
116
117#endif	/* _MACHINE_CPU_H_ */
118