62f456b315
a struct pmap be the same on both SMP and UP kernels. It turns out that the size of a struct pmap is much larger on alpha SMP systems due to the number of pm_asn's being dependant on MAX_CPU. Since modules are supposed to be SMP agnostic, this has the affect of moving around the "interesting bits" of the vmspace (daddr, dsize) that the osf1 module wants to frob. So the module ends up scribbling in a pmap struct, and the user either sees a panic, or an application failure. While here, I've also shrunk MAXCPU to 8 now that it affects the size of pmap structs on UP systesm. This should be plenty, as I'm unware of any hardware we currently run in which supports more than 8 CPUs.
141 lines
4.6 KiB
C
141 lines
4.6 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: machparam.h 1.11 89/08/14$
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*
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* @(#)param.h 8.1 (Berkeley) 6/10/93
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*/
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/*
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* Machine dependent constants for the Alpha.
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*/
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_long and must be cast to
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* any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#ifndef _ALIGNBYTES
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#define _ALIGNBYTES 7
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#endif
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#ifndef _ALIGN
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#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
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#endif
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#ifndef _ALIGNED_POINTER
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#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
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#endif
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#ifndef _MACHINE
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#define _MACHINE alpha
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#endif
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#ifndef _MACHINE_ARCH
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#define _MACHINE_ARCH alpha
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#endif
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#ifndef _NO_NAMESPACE_POLLUTION
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#ifndef _MACHINE_PARAM_H_
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#define _MACHINE_PARAM_H_
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#ifndef MACHINE
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#define MACHINE "alpha"
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#endif
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#ifndef MACHINE_ARCH
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#define MACHINE_ARCH "alpha"
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#endif
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#define MID_MACHINE MID_ALPHA
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#include <machine/alpha_cpu.h>
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#include <machine/cpu.h>
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#define MAXSMPCPU 8
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#ifdef SMP
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#define MAXCPU MAXSMPCPU
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#else
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#define MAXCPU 1
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#endif
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t)
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#define PAGE_SIZE (1 << ALPHA_PGSHIFT) /* bytes/page */
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#define PAGE_SHIFT ALPHA_PGSHIFT
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#define PAGE_MASK (PAGE_SIZE-1)
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define KERNBASE 0xfffffc0000300000LL /* start of kernel virtual */
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#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
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#define CLSIZE 1
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#define CLSIZELOG2 0
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/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
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#define SSIZE 1 /* initial stack size/NBPG */
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#define SINCR 1 /* increment of stack/NBPG */
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#define KSTACK_PAGES 2 /* pages of kstack (with pcb) */
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#define UAREA_PAGES 1 /* pages of u-area */
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#define KSTACK_GUARD /* compile in kstack guard page */
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/*
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* Mach derived conversion macros
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*/
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#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
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#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
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#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define alpha_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define alpha_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
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#endif /* !_MACHINE_PARAM_H_ */
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#endif /* !_NO_NAMESPACE_POLLUTION */
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