/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ typedef struct Conf	Conf;typedef struct Confmem	Confmem;typedef struct FPsave	FPsave;typedef struct KMap	KMap;typedef struct Lance	Lance;typedef struct Lancemem	Lancemem;typedef struct Label	Label;typedef struct Lock	Lock;typedef struct Mach	Mach;typedef struct MMU	MMU;typedef struct Notsave	Notsave;typedef struct Pcidev	Pcidev;typedef struct PMMU	PMMU;typedef struct Softtlb	Softtlb;typedef struct Ureg	Ureg;typedef struct Proc	Proc;typedef uvlong		Tval; #pragma incomplete Pcidev #define MAXSYSARG	5	/* for mount(fd, afd, mpt, flag, arg) */ /* *  parameters for sysproc.c and rebootcmd.c */#define AOUT_MAGIC	V_MAGIC || magic==M_MAGIC/* r3k or r4k boot images */#define BOOT_MAGIC	(0x160<<16) || magic == ((0x160<<16)|3) /* *  machine dependent definitions used by ../port/dat.h */ struct Lock{	ulong	key;			/* semaphore (non-zero = locked) */	ulong	sr;	ulong	pc;	Proc	*p;	Mach	*m;	ushort	isilock;}; struct Label{	ulong	sp;	ulong	pc;}; struct Confmem{	ulong	base;	ulong	npage;	ulong	kbase;	ulong	klimit;}; struct Conf{	ulong	nmach;		/* processors */	ulong	nproc;		/* processes */	Confmem	mem[1];	ulong	npage;		/* total physical pages of memory */	ulong	upages;		/* user page pool */	ulong	nimage;		/* number of page cache image headers */	ulong	nswap;		/* number of swap pages */	int	nswppo;		/* max # of pageouts per segment pass */	ulong	copymode;	/* 0 is copy on write, 1 is copy on reference */	ulong	ialloc;		/* bytes available for interrupt-time allocation */	ulong	pipeqsize;	/* size in bytes of pipe queues */	int	nuart;		/* number of uart devices */}; /* * floating point registers */enum{	/* floating point state */	FPinit,	FPactive,	FPinactive,	FPemu, 	/* bit meaning floating point illegal */	FPillegal= 0x100,}; enum {	Nfpregs		= 32,		/* floats; half as many doubles */}; /* * emulated floating point (mips32r2 with ieee fp regs) * fpstate is separate, kept in Proc */struct FPsave{	/* /dev/proc expects the registers to be first in FPsave */	ulong	reg[Nfpregs];		/* the canonical bits */	union {		ulong	fpstatus;	/* both are fcr31 */		ulong	fpcontrol;	}; 	int	fpdelayexec;		/* executing delay slot of branch */	uintptr	fpdelaypc;		/* pc to resume at after */	ulong	fpdelaysts;	/* save across user-mode delay-slot execution */ 	/* stuck-fault detection */	uintptr	fppc;			/* addr of last fault */	int	fpcnt;			/* how many consecutive at that addr */}; int fpemudebug; /* *  mmu goo in the Proc structure */struct PMMU{	int	pidonmach[MAXMACH];}; /* *  things saved in the Proc structure during a notify */struct Notsave{	ulong	nonempty;}; #include "../port/portdat.h" /* First FIVE members' offsets known by l.s */struct Mach{	/* the following are all known by l.s and cannot be moved */	int	machno;			/* physical id of processor FIRST */	Softtlb*stb;			/* Software tlb simulation SECOND */	Proc*	proc;			/* process on this processor THIRD */	ulong	splpc;			/* pc that called splhi() FOURTH */	ulong	tlbfault;		/* # of tlb faults FIFTH */	ulong	ktlbfault;	ulong	utlbfault; 	/* the following is safe to move */	ulong	tlbpurge;	ulong	ticks;			/* of the clock since boot time */	Label	sched;			/* scheduler wakeup */	void*	alarm;			/* alarms bound to this clock */	int	lastpid;		/* last pid allocated on this machine */	Proc*	pidproc[NTLBPID];	/* proc that owns tlbpid on this mach */	KMap*	kactive;		/* active on this machine */	int	knext;	uchar	ktlbx[NTLB];		/* tlb index used for kmap */	uchar	ktlbnext;	int	speed;			/* cpu speed */	ulong	delayloop;		/* for the delay() routine */	ulong	fairness;		/* for runproc */	int	flushmmu;	int	inclockintr;	int	ilockdepth;	Perf	perf;			/* performance counters */	uvlong	cyclefreq;		/* Frequency of user readable cycle counter */ 	/* for per-processor timers */	ulong	lastcount;	uvlong	fastticks;	ulong	hz;	ulong	maxperiod;	ulong	minperiod; 	Proc*	readied;		/* for runproc */	ulong	schedticks;		/* next forced context switch */ 	int	pfault;	int	cs;	int	syscall;	int	load;	int	intr;	int	hashcoll;		/* soft-tlb hash collisions */	int	paststartup;		/* for putktlb */ 	int	stack[1];}; struct KMap{	Ref;	ulong	virt;	ulong	phys0;	ulong	phys1;	KMap*	next;	KMap*	konmach[MAXMACH];	Page*	pg;	ulong	pc;			/* of caller to kmap() */}; #define	VA(k)		((k)->virt)#define PPN(x)		((ulong)(x)>>6) /* offsets known by l.s */struct Softtlb{	ulong	virt;	ulong	phys0;	ulong	phys1;}; struct{	Lock;	long	machs;		/* bitmap of processors */	short	exiting;	int	ispanic;}active; extern KMap kpte[];extern register Mach	*m;extern register Proc	*up; extern FPsave initfp; extern	int normalprint;