1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2001 David E. O'Brien
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * William Jolitz.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
40 * $FreeBSD$
41 */
42
43 #ifndef _POWERPC_INCLUDE_PARAM_H_
44 #define _POWERPC_INCLUDE_PARAM_H_
45
46 /*
47 * Machine dependent constants for PowerPC
48 */
49
50 #include <machine/_align.h>
51
52 /* Needed to display interrupts on OFW PCI */
53 #define __PCI_REROUTE_INTERRUPT
54
55 #ifndef MACHINE
56 #define MACHINE "powerpc"
57 #endif
58 #ifndef MACHINE_ARCH
59 #ifdef __powerpc64__
60 #if defined(__LITTLE_ENDIAN__)
61 #define MACHINE_ARCH "powerpc64le"
62 #else
63 #define MACHINE_ARCH "powerpc64"
64 #endif
65 #else
66 #ifdef __SPE__
67 #define MACHINE_ARCH "powerpcspe"
68 #else
69 #define MACHINE_ARCH "powerpc"
70 #endif
71 #endif
72 #endif
73 #define MID_MACHINE MID_POWERPC
74 #ifdef __powerpc64__
75 #ifndef MACHINE_ARCH32
76 #define MACHINE_ARCH32 "powerpc"
77 #endif
78 #endif
79
80 #ifdef SMP
81 #ifndef MAXCPU
82 #define MAXCPU 256
83 #endif
84 #else
85 #define MAXCPU 1
86 #endif
87
88 #ifndef MAXMEMDOM
89 #define MAXMEMDOM 8
90 #endif
91
92 #define ALIGNBYTES _ALIGNBYTES
93 #define ALIGN(p) _ALIGN(p)
94 /*
95 * ALIGNED_POINTER is a boolean macro that checks whether an address
96 * is valid to fetch data elements of type t from on this architecture.
97 * This does not reflect the optimal alignment, just the possibility
98 * (within reasonable limits).
99 */
100 #define ALIGNED_POINTER(p, t) ((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0)
101
102 /*
103 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
104 * architecture. It should be used with appropriate caution.
105 */
106 #define CACHE_LINE_SHIFT 7
107 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
108
109 #define PAGE_SHIFT 12
110 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
111 #define PAGE_MASK (PAGE_SIZE - 1)
112 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
113 #define NPDEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
114
115 #define L1_PAGE_SIZE_SHIFT 39
116 #define L1_PAGE_SIZE (1UL<<L1_PAGE_SIZE_SHIFT)
117 #define L1_PAGE_MASK (L1_PAGE_SIZE-1)
118
119 #define L2_PAGE_SIZE_SHIFT 30
120 #define L2_PAGE_SIZE (1UL<<L2_PAGE_SIZE_SHIFT)
121 #define L2_PAGE_MASK (L2_PAGE_SIZE-1)
122
123 #define L3_PAGE_SIZE_SHIFT 21
124 #define L3_PAGE_SIZE (1UL<<L3_PAGE_SIZE_SHIFT)
125 #define L3_PAGE_MASK (L3_PAGE_SIZE-1)
126
127 #define MAXPAGESIZES 3 /* maximum number of supported page sizes */
128
129 #define RELOCATABLE_KERNEL 1 /* kernel may relocate during startup */
130
131 #ifndef KSTACK_PAGES
132 #ifdef __powerpc64__
133 #define KSTACK_PAGES 12 /* includes pcb */
134 #else
135 #define KSTACK_PAGES 4 /* includes pcb */
136 #endif
137 #endif
138 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
139 #define USPACE (kstack_pages * PAGE_SIZE) /* total size of pcb */
140
141 #define COPYFAULT 0x1
142 #define FUSUFAULT 0x2
143
144 /*
145 * Mach derived conversion macros
146 */
147 #define trunc_page(x) ((x) & ~(PAGE_MASK))
148 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
149 #define trunc_2mpage(x) ((unsigned long)(x) & ~L3_PAGE_MASK)
150 #define round_2mpage(x) ((((unsigned long)(x)) + L3_PAGE_MASK) & ~L3_PAGE_MASK)
151 #define trunc_1gpage(x) ((unsigned long)(x) & ~L2_PAGE_MASK)
152
153 #define atop(x) ((x) >> PAGE_SHIFT)
154 #define ptoa(x) ((x) << PAGE_SHIFT)
155
156 #define powerpc_btop(x) ((x) >> PAGE_SHIFT)
157 #define powerpc_ptob(x) ((x) << PAGE_SHIFT)
158
159 #define pgtok(x) ((x) * (PAGE_SIZE / 1024UL))
160
161 #define btoc(x) ((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT))
162
163 #endif /* !_POWERPC_INCLUDE_PARAM_H_ */
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