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/* $OpenBSD: param.h,v 1.13 2000/02/15 16:32:41 art Exp $ */
/* $NetBSD: param.h,v 1.29 1997/03/10 22:50:37 pk Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)param.h 8.1 (Berkeley) 6/11/93
*/
/*
* Sun4M support by Aaron Brown, Harvard University.
* Changes Copyright (c) 1995 The President and Fellows of Harvard College.
* All rights reserved.
*/
#define _MACHINE sparc
#define MACHINE "sparc"
#define _MACHINE_ARCH sparc
#define MACHINE_ARCH "sparc"
#define MID_MACHINE MID_SPARC
#ifdef _KERNEL /* XXX */
#ifndef _LOCORE /* XXX */
#include <machine/cpu.h> /* XXX */
#endif /* XXX */
#endif /* XXX */
/*
* Round p (pointer or byte index) up to a correctly-aligned value for
* the machine's strictest data type. The result is u_int and must be
* cast to any desired pointer type.
*
* ALIGNED_POINTER is a boolean macro that checks whether an address
* is valid to fetch data elements of type t from on this architecture.
* This does not reflect the optimal alignment, just the possibility
* (within reasonable limits).
*
*/
#define ALIGNBYTES 7
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
#define SUN4_PGSHIFT 13 /* for a sun4 machine */
#define SUN4CM_PGSHIFT 12 /* for a sun4c or sun4m machine */
/*
* The following variables are always defined and initialized (in locore)
* so independently compiled modules (e.g. LKMs) can be used irrespective
* of the `options SUN4?' combination a particular kernel was configured with.
* See also the definitions of NBPG, PGOFSET and PGSHIFT below.
*/
#if defined(_KERNEL) && !defined(_LOCORE)
extern int nbpg, pgofset, pgshift;
#endif
#define KERNBASE 0xf8000000 /* start of kernel virtual space */
#define KERNTEXTOFF 0xf8004000 /* start of kernel text */
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (64 * 1024)
#define CLSIZE 1
#define CLSIZELOG2 0
/* NOTE: SSIZE must be multiple of CLSIZE */
#define SSIZE 1 /* initial stack size in pages */
#define USPACE 8192
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
*/
#define MSIZE 128 /* size of an mbuf */
#define MCLBYTES 2048 /* enough for whole Ethernet packet */
#define MCLSHIFT 11 /* log2(MCLBYTES) */
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 1024 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
#endif
#endif
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages.
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (6 * 1024 * 1024 / CLBYTES)
#endif
/* pages ("clicks") to disk blocks */
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
/* pages to bytes */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(x) ((x) << DEV_BSHIFT)
/*
* Map a ``block device block'' to a file system block.
* This should be device dependent, and should use the bsize
* field from the disk label.
* For now though just use DEV_BSIZE.
*/
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE))
/*
* Mach derived conversion macros
*/
#define sparc_btop(x) ((unsigned)(x) >> PGSHIFT)
#define sparc_ptob(x) ((unsigned)(x) << PGSHIFT)
/*
* dvmamap manages a range of DVMA addresses intended to create double
* mappings of physical memory. In a way, `dvmamap' is a submap of the
* VM map `phys_map'. The difference is the use of the `resource map'
* routines to manage page allocation, allowing DVMA addresses to be
* allocated and freed from within interrupt routines.
*
* Note that `phys_map' can still be used to allocate memory-backed pages
* in DVMA space.
*/
#ifdef _KERNEL
#ifndef _LOCORE
extern vaddr_t dvma_base;
extern vaddr_t dvma_end;
extern struct extent *dvmamap_extent;
extern caddr_t kdvma_mapin __P((caddr_t, int, int));
extern caddr_t dvma_malloc __P((size_t, void *, int));
extern void dvma_free __P((caddr_t, size_t, void *));
extern void delay __P((unsigned int));
#define DELAY(n) delay(n)
extern int cputyp;
#if 0
extern int cpumod;
extern int mmumod;
#endif
#endif /* _LOCORE */
#endif /* _KERNEL */
/*
* Values for the cputyp variable.
*/
#define CPU_SUN4 0
#define CPU_SUN4C 1
#define CPU_SUN4M 2
/*
* Shorthand CPU-type macros. Enumerate all eight cases.
* Let compiler optimize away code conditional on constants.
*
* On a sun4 machine, the page size is 8192, while on a sun4c and sun4m
* it is 4096. Therefore, in the (SUN4 && (SUN4C || SUN4M)) cases below,
* NBPG, PGOFSET and PGSHIFT are defined as variables which are initialized
* early in locore.s after the machine type has been detected.
*
* Note that whenever the macros defined below evaluate to expressions
* involving variables, the kernel will perform slighly worse due to the
* extra memory references they'll generate.
*/
#if defined(SUN4M) && defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#elif defined(SUN4M) && defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (0)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
# define PAGE_SIZE 4096
# define PAGE_MASK (PAGE_SIZE - 1)
# define PAGE_SHIFT SUN4CM_PGSHIFT
#elif defined(SUN4M) && !defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (0)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4M)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#elif defined(SUN4M) && !defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (1)
# define CPU_ISSUN4C (0)
# define CPU_ISSUN4 (0)
# define CPU_ISSUN4OR4C (0)
# define CPU_ISSUN4COR4M (1)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
# define PAGE_SIZE 4096
# define PAGE_MASK (PAGE_SIZE - 1)
# define PAGE_SHIFT SUN4CM_PGSHIFT
#elif !defined(SUN4M) && defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (0)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (1)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#elif !defined(SUN4M) && defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (0)
# define CPU_ISSUN4C (1)
# define CPU_ISSUN4 (0)
# define CPU_ISSUN4OR4C (1)
# define CPU_ISSUN4COR4M (1)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
# define PAGE_SIZE 4096
# define PAGE_MASK (PAGE_SIZE - 1)
# define PAGE_SHIFT SUN4CM_PGSHIFT
#elif !defined(SUN4M) && !defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (0)
# define CPU_ISSUN4C (0)
# define CPU_ISSUN4 (1)
# define CPU_ISSUN4OR4C (1)
# define CPU_ISSUN4COR4M (0)
# define NBPG 8192
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4_PGSHIFT
# define PAGE_SIZE 8192
# define PAGE_MASK (PAGE_SIZE - 1)
# define PAGE_SHIFT SUN4_PGSHIFT
#elif !defined(SUN4M) && !defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#endif
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