2 * Copyright (c) 2001 David E. O'Brien
3 * Copyright (c) 1990 The Regents of the University of California.
6 * This code is derived from software contributed to Berkeley by
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
41 #ifndef _POWERPC_INCLUDE_PARAM_H_
42 #define _POWERPC_INCLUDE_PARAM_H_
45 * Machine dependent constants for PowerPC
48 #include <machine/_align.h>
50 /* Needed to display interrupts on OFW PCI */
51 #define __PCI_REROUTE_INTERRUPT
54 #define MACHINE "powerpc"
58 #define MACHINE_ARCH "powerpc64"
61 #define MACHINE_ARCH "powerpcspe"
63 #define MACHINE_ARCH "powerpc"
67 #define MID_MACHINE MID_POWERPC
69 #ifndef MACHINE_ARCH32
70 #define MACHINE_ARCH32 "powerpc"
74 #if defined(SMP) || defined(KLD_MODULE)
80 #endif /* SMP || KLD_MODULE */
86 #define ALIGNBYTES _ALIGNBYTES
87 #define ALIGN(p) _ALIGN(p)
89 * ALIGNED_POINTER is a boolean macro that checks whether an address
90 * is valid to fetch data elements of type t from on this architecture.
91 * This does not reflect the optimal alignment, just the possibility
92 * (within reasonable limits).
94 #define ALIGNED_POINTER(p, t) ((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0)
97 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
98 * architecture. It should be used with appropriate caution.
100 #define CACHE_LINE_SHIFT 7
101 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
103 #define PAGE_SHIFT 12
104 #define PAGE_SIZE (1L << PAGE_SHIFT) /* Page size */
105 #define PAGE_MASK (PAGE_SIZE - 1)
106 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
108 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */
112 #define KSTACK_PAGES 8 /* includes pcb */
114 #define KSTACK_PAGES 4 /* includes pcb */
117 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
118 #define USPACE (kstack_pages * PAGE_SIZE) /* total size of pcb */
121 * Mach derived conversion macros
123 #define trunc_page(x) ((x) & ~(PAGE_MASK))
124 #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK)
126 #define atop(x) ((x) >> PAGE_SHIFT)
127 #define ptoa(x) ((x) << PAGE_SHIFT)
129 #define powerpc_btop(x) ((x) >> PAGE_SHIFT)
130 #define powerpc_ptob(x) ((x) << PAGE_SHIFT)
132 #define pgtok(x) ((x) * (PAGE_SIZE / 1024UL))
134 #define btoc(x) ((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT))
136 #endif /* !_POWERPC_INCLUDE_PARAM_H_ */