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/* $OpenBSD: param.h,v 1.3 2005/09/12 23:05:05 miod Exp $ */
/* OpenBSD: param.h,v 1.29 2004/08/06 22:31:31 mickey 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. 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
*/
#ifndef _SOLBOURNE_PARAM_H_
#define _SOLBOURNE_PARAM_H_
#define _MACHINE solbourne
#define MACHINE "solbourne"
#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 */
#define KERNBASE 0xfd080000
#define KERNTEXTOFF 0xfd084000 /* start of kernel text */
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (64 * 1024)
#define USPACE 8192
#define USPACE_ALIGN (0) /* u-area alignment 0-none */
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than 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 256 /* size of an mbuf */
#define MCLSHIFT 11 /* log2(MCLBYTES) */
#define MCLBYTES (1 << MCLSHIFT) /* enough for whole Ethernet packet */
#define MCLOFSET (MCLBYTES - 1)
#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
#define MSGBUFSIZE PAGE_SIZE /* larger than on sparc! */
#define MSGBUF_PA PTW1_TO_PHYS(KERNBASE) /* msgbuf physical address */
/*
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
* logical pages.
*/
#define NKMEMPAGES_MIN_DEFAULT ((4 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT)
/* 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))
/*
* 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(caddr_t, int, int);
extern caddr_t dvma_malloc_space(size_t, void *, int, int);
extern void dvma_free(caddr_t, size_t, void *);
#define dvma_malloc(len,kaddr,flags) dvma_malloc_space(len,kaddr,flags,0)
extern void delay(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_KAP 5
/*
* Shorthand CPU-type macros.
* Let compiler optimize away code conditional on constants.
*/
#define CPU_ISSUN4M (0)
#define CPU_ISSUN4C (0)
#define CPU_ISSUN4 (0)
#define CPU_ISSUN4OR4C (0)
#define CPU_ISSUN4COR4M (0)
#define CPU_ISKAP (1)
#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
#endif /* _SOLBOURNE_PARAM_H_ */
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