/***********************************************************************
 * file:    h/sys/param.h
 * part#:
 * internal sequence#:
 *
 *	**************************************************************
 *	*     " c Copyright Hewlett-Packard Company, 1984.*  All     *
 *	*    rights are reserved.  Copying or other reproduction     *
 *	*    of this program except for archival purposes is         *
 *	*    prohibited without the prior written consent of         *
 *	*    Hewlett-Packard Company."				     *
 *	**************************************************************
 *
 *		Pisces Q-DOS project
 *		Andy Rood  Kernel project lead
 *		-----------------------------------------------------
 *		initial					11/82	alr
 *              changed NOFILE to 20                   6/23/83  fdt
 *		removed fuibyte... & copyiin ...	9/13/83 alr
 *		change USRSTACK				9/13/83 alr
 *		change major, minor, makedev to reflect a
 * 		  32 bit dev_t				10/14/83 jra		
 *              changed CANBSIZ to 1024                 11/7/83  fdt
 *		changed NCARGS to 5120			5-84 alr
 */
#include <sys/types.h>

/*
 * fundamental variables
 * don't change too often
 */

#ifndef BSIZE
#define BSIZE   1024		/* file system block size */
#endif				/* also devined in filsys */
#define	NOFILE	20		/* max open files per process */
#define	MAXPID	30000		/* max process id */
#define	MAXUID	60000		/* max user id */
#define	MAXLINK	100		/* max links */

#define	MAXMEM	512		/* max per-proc memory in 1024-byte clicks */
#define	MAXSEGS 2  	 	/* number of 'segments' */
#define	SGTABSZ MAXSEGS		/* number of 'segments' */
#define PTEPPG	256		/* number of page table entries per page */
#define	MAXUMEM	MAXSEGS*PTEPPG	/* max no. clicks per process */
#define	SWAPSIZE	64	/* granularity of partial swaps (in clicks) */
/*
 * #define	SSIZE	2		/* initial stack size (*1024 bytes) 
 */
#define SSIZE	u.u_procp->p_t2
#define	SINCR	1		/* increment of stack (*1024 bytes) */
#define	UPAGES	2		/* initial size of user block (*1024) */
#define	USIZE	(UPAGES + SGTABSZ)	/* size of user block in segments */
/*********
 *
 * below modified for no mm pre-pisces kernel
 *		12-82 alr
 *       modified for 0x2000 base users  1-84 alr
 */
#define	USRSTART 0x2000    	/* Start of user virtual addresses */
#define	USRSTACK 0x1800     	/* Start of user stack (virtual) */
				/*        ... alr 3-8-83        */
				/*	  ... alr 9-13-83      */
				/*        ... alr 1-5-84      */

#define	CANBSIZ	1024           	/* max size of typewriter line	*/
#define	HZ	10		/* Ticks/resched of the clock */
#define	NCARGS	5120		/* # characters in exec arglist */

/*
 * priorities
 * probably should not be
 * altered too much
 */

#define	PSWP	0
#define	PINOD	10
#define	PRIBIO	20
#define	PZERO	25
#define	NZERO	20
#define	PPIPE	26
#define	PWAIT	30
#define	PSLEP	40
#define	PUSER	50
#define	PIDLE	127

/*
 * signals
 * dont change
 */

#define	NSIG	21
/*
 * No more than 32 signals (1-32) because they are
 * stored in bits in a long.
 */
#define	SIGHUP	1	/* hangup */
#define	SIGINT	2	/* interrupt (rubout) */
#define	SIGQUIT	3	/* quit (FS) */
#define	SIGILL	4	/* illegal instruction */
#define	SIGTRAP	5	/* trace or breakpoint */
#define	SIGIOT	6	/* iot */
#define	SIGEMT	7	/* emt */
#define	SIGFPE	8	/* floating exception */
#define	SIGKILL	9	/* kill, uncatchable termination */
#define	SIGBUS	10	/* bus error */
#define	SIGSEGV	11	/* segmentation violation */
#define	SIGSYS	12	/* bad system call */
#define	SIGPIPE	13	/* end of pipe */
#define	SIGALRM	14	/* alarm clock */
#define	SIGTERM	15	/* Catchable termination */
#define	SIGUSR1	16	/* user defined signal 1 */
#define	SIGUSR2	17	/* user defined signal 2 */
#define	SIGCLD	18	/* child death */
#define	SIGPWR	19	/* power-fail restart */
#define SIGMOUSE 20	/* mouse event */

/*
 * fundamental constants of the implementation--
 * cannot be changed easily
 */

#define	NBPW	sizeof(int)	/* number of bytes in an integer */
#define	NULL	0
#define	CMASK	0		/* default mask for file creation */
#define	CDLIMIT	(1L<<11)	/* default max write address */
#define	NODEV	(dev_t)(-1)
#define	CLKTICK	16667*6		/* microseconds in a  clock tick */
#define MAXDMA	65536		/* longest possible DMA */

/*
 * Some macros for units conversion
 */
/* Core clicks to segments and vice versa */
#define	ctos(x)	(x)
#define	stoc(x)	(x)

/* clicks to bytes */
#define	ctob(x)	((x)<<10)

/* bytes to clicks */
#define	btoc(x)	(((unsigned)x+1023)>>10)
#define	btoct(x)	((unsigned)(x)>>10)

/* major part of a device */
#define	major(x)	(int)((unsigned)x>>24)

/* minor part of a device */
#define	minor(x)	(int)(x&0xffffff)

/* port number for a device */
#define port(x)		(int)((x>>12)&0x3f)

/* make a device number */
#define	makedev(x,y)	(dev_t)(((x)<<24) | (y))

/* Machine dependent bits and macros */

#define	SMODE	0x2000	/* supervisor mode bit */
#define	INTPRI	0x0700	/* priority bits */

#define	USERMODE(ps)	(((ps) & SMODE) == 0)
#define	BASEPRI(ps)	(((ps) & INTPRI) != 0)


#define	lobyte(X)	(((unsigned char *)&X)[1])
#define	hibyte(X)	(((unsigned char *)&X)[0])
#define	loword(X)	(((ushort *)&X)[1])
#define	hiword(X)	(((ushort *)&X)[0])


/*
 * #define	fuibyte(x)	fubyte(x)
 * #define	fuiword(x)	fuword(x)
 * #define	suibyte(x,y)	subyte(x,y)
 * #define	suiword(x,y)	suword(x,y)
 * #define	copyiin(x,y,z)	copy(x,y,z)
 * #define	copyiout(x,y,z)	copy(x,y,z)
 */