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