2 * SPDX-License-Identifier: BSD-4-Clause
4 * Copyright (c) 2001 David E. O'Brien
5 * Copyright (c) 1990 The Regents of the University of California.
8 * This code is derived from software contributed to Berkeley by
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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39 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
43 #ifndef _POWERPC_INCLUDE_PARAM_H_
44 #define _POWERPC_INCLUDE_PARAM_H_
47 * Machine dependent constants for PowerPC
50 #include <machine/_align.h>
52 /* Needed to display interrupts on OFW PCI */
53 #define __PCI_REROUTE_INTERRUPT
56 #define MACHINE "powerpc"
60 #define MACHINE_ARCH "powerpc64"
63 #define MACHINE_ARCH "powerpcspe"
65 #define MACHINE_ARCH "powerpc"
69 #define MID_MACHINE MID_POWERPC
71 #ifndef MACHINE_ARCH32
72 #define MACHINE_ARCH32 "powerpc"
76 #if defined(SMP) || defined(KLD_MODULE)
82 #endif /* SMP || KLD_MODULE */
88 #define ALIGNBYTES _ALIGNBYTES
89 #define ALIGN(p) _ALIGN(p)
91 * ALIGNED_POINTER is a boolean macro that checks whether an address
92 * is valid to fetch data elements of type t from on this architecture.
93 * This does not reflect the optimal alignment, just the possibility
94 * (within reasonable limits).
96 #define ALIGNED_POINTER(p, t) ((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0)
99 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
100 * architecture. It should be used with appropriate caution.
102 #define CACHE_LINE_SHIFT 7
103 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
105 #define PAGE_SHIFT 12
106 #define PAGE_SIZE (1L << PAGE_SHIFT) /* Page size */
107 #define PAGE_MASK (PAGE_SIZE - 1)
108 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
110 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */
114 #define KSTACK_PAGES 8 /* includes pcb */
116 #define KSTACK_PAGES 4 /* includes pcb */
119 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
120 #define USPACE (kstack_pages * PAGE_SIZE) /* total size of pcb */
123 * Mach derived conversion macros
125 #define trunc_page(x) ((x) & ~(PAGE_MASK))
126 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
128 #define atop(x) ((x) >> PAGE_SHIFT)
129 #define ptoa(x) ((x) << PAGE_SHIFT)
131 #define powerpc_btop(x) ((x) >> PAGE_SHIFT)
132 #define powerpc_ptob(x) ((x) << PAGE_SHIFT)
134 #define pgtok(x) ((x) * (PAGE_SIZE / 1024UL))
136 #define btoc(x) ((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT))
138 #endif /* !_POWERPC_INCLUDE_PARAM_H_ */