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//==========================================================================

//

//      include/sys/param.h

//

//      

//

//==========================================================================

//####BSDCOPYRIGHTBEGIN####

//

// -------------------------------------------

//

// Portions of this software may have been derived from OpenBSD or other sources,

// and are covered by the appropriate copyright disclaimers included herein.

//

// -------------------------------------------

//

//####BSDCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-01-10

// Purpose:      

// Description:  

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

/*      $OpenBSD: param.h,v 1.25 1999/09/23 08:25:01 deraadt Exp $      */

/*      $NetBSD: param.h,v 1.23 1996/03/17 01:02:29 thorpej Exp $       */

/*-

 * Copyright (c) 1982, 1986, 1989, 1993

 *      The Regents of the University of California.  All rights reserved.

 * (c) UNIX System Laboratories, Inc.

 * All or some portions of this file are derived from material licensed

 * to the University of California by American Telephone and Telegraph

 * Co. or Unix System Laboratories, Inc. and are reproduced herein with

 * the permission of UNIX System Laboratories, Inc.

 *

 * 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     8.2 (Berkeley) 1/21/94

 */

#ifndef _SYS_PARAM_H_

#define _SYS_PARAM_H_

#define BSD     199306          /* System version (year & month). */

#define BSD4_3  1

#define BSD4_4  1

#define OpenBSD 199912          /* OpenBSD version (year & month). */

#define OpenBSD2_6 1            /* OpenBSD 2.6 */

#ifndef NULL

#ifdef  __GNUG__

#define NULL    __null

#else

#define NULL    0

#endif

#endif

#ifndef _LOCORE

#include <sys/types.h>

#ifndef __ECOS

#include <sys/simplelock.h>

#endif

#endif

#ifndef __ECOS

/*

 * Machine-independent constants (some used in following include files).

 * Redefined constants are from POSIX 1003.1 limits file.

 *

 * MAXCOMLEN should be >= sizeof(ac_comm) (see <acct.h>)

 * MAXLOGNAME should be >= UT_NAMESIZE (see <utmp.h>)

 */

#include <sys/syslimits.h>

#define MAXCOMLEN       16              /* max command name remembered */

#define MAXINTERP       64              /* max interpreter file name length */

#define MAXLOGNAME      12              /* max login name length */

#define MAXUPRC         CHILD_MAX       /* max simultaneous processes */

#define NCARGS          ARG_MAX         /* max bytes for an exec function */

#define NGROUPS         NGROUPS_MAX     /* max number groups */

#define NOFILE          OPEN_MAX        /* max open files per process (soft) */

#define NOFILE_MAX      1024            /* max open files per process (hard) */

#define NOGROUP         65535           /* marker for empty group set member */

#endif

#define MAXHOSTNAMELEN  256             /* max hostname size */

/* More types and definitions used throughout the kernel. */

#ifdef _KERNEL

#include <sys/cdefs.h>

#include <sys/errno.h>

#include <sys/time.h>

#ifdef __ECOS

#include <cyg/io/file.h>

#else

#include <sys/resource.h>

#include <sys/ucred.h>

#include <sys/uio.h>

#endif

#endif

#ifndef __ECOS

/* Signals. */

#include <sys/signal.h>

#endif

#ifndef __ECOS

/*

 * Priorities.  Note that with 32 run queues, differences less than 4 are

 * insignificant.

 */

#define PSWP    0

#define PVM     4

#define PINOD   8

#define PRIBIO  16

#define PVFS    20

#define PZERO   22              /* No longer magic, shouldn't be here.  XXX */

#define PSOCK   24

#define PWAIT   32

#define PLOCK   36

#define PPAUSE  40

#define PUSER   50

#define MAXPRI  127             /* Priorities range from 0 through MAXPRI. */

#define PRIMASK 0x0ff

#define PCATCH  0x100           /* OR'd with pri for tsleep to check signals */

#endif

#define NBPW    sizeof(int)     /* number of bytes per word (integer) */

#ifndef __ECOS

#define CMASK   022             /* default file mask: S_IWGRP|S_IWOTH */

#define NODEV   (dev_t)(-1)     /* non-existent device */

/*

 * Clustering of hardware pages on machines with ridiculously small

 * page sizes is done here.  The paging subsystem deals with units of

 * CLSIZE pte's describing NBPG (from machine/machparam.h) pages each.

 */

#define CLBYTES         (CLSIZE*NBPG)

#define CLOFSET         (CLSIZE*NBPG-1) /* for clusters, like PGOFSET */

#define claligned(x)    ((((int)(x))&CLOFSET)==0)

#define CLOFF           CLOFSET

#define CLSHIFT         (PGSHIFT+CLSIZELOG2)

#if CLSIZE==1

#define clbase(i)       (i)

#define clrnd(i)        (i)

#else

/* Give the base virtual address (first of CLSIZE). */

#define clbase(i)       ((i) &~ (CLSIZE-1))

/* Round a number of clicks up to a whole cluster. */

#define clrnd(i)        (((i) + (CLSIZE-1)) &~ (CLSIZE-1))

#endif

#define CBLOCK  64              /* Clist block size, must be a power of 2. */

#define CBQSIZE (CBLOCK/NBBY)   /* Quote bytes/cblock - can do better. */

                                /* Data chars/clist. */

#define CBSIZE  (CBLOCK - sizeof(struct cblock *) - CBQSIZE)

#define CROUND  (CBLOCK - 1)    /* Clist rounding. */

/*

 * File system parameters and macros.

 *

 * The file system is made out of blocks of at most MAXBSIZE units, with

 * smaller units (fragments) only in the last direct block.  MAXBSIZE

 * primarily determines the size of buffers in the buffer pool.  It may be

 * made larger without any effect on existing file systems; however making

 * it smaller makes some file systems unmountable.

 */

#ifndef MAXBSIZE        /* XXX temp until sun3 DMA chaining */

#define MAXBSIZE        MAXPHYS

#endif

#define MAXFRAG         8

/*

 * MAXPATHLEN defines the longest permissable path length after expanding

 * symbolic links. It is used to allocate a temporary buffer from the buffer

 * pool in which to do the name expansion, hence should be a power of two,

 * and must be less than or equal to MAXBSIZE.  MAXSYMLINKS defines the

 * maximum number of symbolic links that may be expanded in a path name.

 * It should be set high enough to allow all legitimate uses, but halt

 * infinite loops reasonably quickly.

 */

#define MAXPATHLEN      PATH_MAX

#define MAXSYMLINKS     32

#endif // __ECOS

/* Bit map related macros. */

#define setbit(a,i)     ((a)[(i)/NBBY] |= 1<<((i)%NBBY))

#define clrbit(a,i)     ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))

#define isset(a,i)      ((a)[(i)/NBBY] & (1<<((i)%NBBY)))

#define isclr(a,i)      (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)

/* Macros for counting and rounding. */

#ifndef howmany

#define howmany(x, y)   (((x)+((y)-1))/(y))

#endif

#define roundup(x, y)   ((((x)+((y)-1))/(y))*(y))

#define powerof2(x)     ((((x)-1)&(x))==0)

/* Macros for min/max. */

#ifndef _KERNEL

# ifndef MIN

#  define       MIN(a,b) (((a)<(b))?(a):(b))

# endif

# ifndef MAX

#  define       MAX(a,b) (((a)>(b))?(a):(b))

# endif

#endif

#ifndef __ECOS

/*

 * Constants for setting the parameters of the kernel memory allocator.

 *

 * 2 ** MINBUCKET is the smallest unit of memory that will be

 * allocated. It must be at least large enough to hold a pointer.

 *

 * Units of memory less or equal to MAXALLOCSAVE will permanently

 * allocate physical memory; requests for these size pieces of

 * memory are quite fast. Allocations greater than MAXALLOCSAVE must

 * always allocate and free physical memory; requests for these

 * size allocations should be done infrequently as they will be slow.

 *

 * Constraints: CLBYTES <= MAXALLOCSAVE <= 2 ** (MINBUCKET + 14), and

 * MAXALLOCSIZE must be a power of two.

 */

#define MINBUCKET       4               /* 4 => min allocation of 16 bytes */

#define MAXALLOCSAVE    (2 * CLBYTES)

/*

 * Scale factor for scaled integers used to count %cpu time and load avgs.

 *

 * The number of CPU `tick's that map to a unique `%age' can be expressed

 * by the formula (1 / (2 ^ (FSHIFT - 11))).  The maximum load average that

 * can be calculated (assuming 32 bits) can be closely approximated using

 * the formula (2 ^ (2 * (16 - FSHIFT))) for (FSHIFT < 15).

 *

 * For the scheduler to maintain a 1:1 mapping of CPU `tick' to `%age',

 * FSHIFT must be at least 11; this gives us a maximum load avg of ~1024.

 */

#define FSHIFT  11              /* bits to right of fixed binary point */

#define FSCALE  (1<<FSHIFT)

/*

 * rfork() options.

 *

 * XXX currently, operations without RFPROC set are not supported.

 */

#define RFNAMEG         (1<<0)  /* UNIMPL new plan9 `name space' */

#define RFENVG          (1<<1)  /* UNIMPL copy plan9 `env space' */

#define RFFDG           (1<<2)  /* copy fd table */

#define RFNOTEG         (1<<3)  /* UNIMPL create new plan9 `note group' */

#define RFPROC          (1<<4)  /* change child (else changes curproc) */

#define RFMEM           (1<<5)  /* share `address space' */

#define RFNOWAIT        (1<<6)  /* parent need not wait() on child */ 

#define RFCNAMEG        (1<<10) /* UNIMPL zero plan9 `name space' */

#define RFCENVG         (1<<11) /* UNIMPL zero plan9 `env space' */

#define RFCFDG          (1<<12) /* zero fd table */

#endif // __ECOS

#ifdef __ECOS

// Function mappings

extern int  cyg_tsleep(void *, int, char *, int);

extern void cyg_wakeup(void *);

#define tsleep(e,p,w,t) cyg_tsleep(e,0,w,t)

#define wakeup(e)       cyg_wakeup(e)

#ifdef CYGIMPL_TRACE_SPLX   

extern cyg_uint32  cyg_splimp(const char *file, const int line);

extern cyg_uint32  cyg_splnet(const char *file, const int line);

extern cyg_uint32  cyg_splclock(const char *file, const int line);

extern cyg_uint32  cyg_splsoftnet(const char *file, const int line);

extern void        cyg_splx(cyg_uint32, const char *file, const int line);

#define splimp()   cyg_splimp(__FUNCTION__, __LINE__)

#define splnet()   cyg_splnet(__FUNCTION__, __LINE__)

#define splclock() cyg_splclock(__FUNCTION__, __LINE__)

#define splsoftnet() cyg_splsoftnet(__FUNCTION__, __LINE__)

#define splx(x)    cyg_splx(x, __FUNCTION__, __LINE__)

#define cyg_scheduler_lock() _cyg_scheduler_lock(__FUNCTION__, __LINE__)

#define cyg_scheduler_safe_lock() _cyg_scheduler_safe_lock(__FUNCTION__, __LINE__)

#define cyg_scheduler_unlock() _cyg_scheduler_unlock(__FUNCTION__, __LINE__)

#else

extern cyg_uint32  cyg_splimp(void);

extern cyg_uint32  cyg_splnet(void);

extern cyg_uint32  cyg_splclock(void);

extern cyg_uint32  cyg_splsoftnet(void);

extern cyg_uint32  cyg_splhigh(void);

extern void        cyg_splx(cyg_uint32);

#define splimp     cyg_splimp

#define splnet     cyg_splnet

#define splclock   cyg_splclock

#define splsoftnet cyg_splsoftnet

#define splhigh    cyg_splhigh

#define splx       cyg_splx

#endif

extern void cyg_panic(const char *msg, ...);

#define panic cyg_panic

// Namespace changes

#define route_reinit cyg_route_reinit

#define arc4random cyg_arc4random

#endif

/* Machine type dependent parameters. */

#include <machine/param.h>

#include <machine/limits.h>

#endif // __SYS_PARAM_H_