typedef struct Conf	Conf;typedef struct FPU	FPU;typedef struct FPenv	FPenv;typedef struct Label	Label;typedef struct Lock	Lock;typedef struct Mach	Mach;typedef struct Ureg	Ureg;typedef struct ISAConf	ISAConf;typedef struct PCMmap	PCMmap;typedef struct PCIcfg	PCIcfg;typedef struct TouchPnt TouchPnt;typedef struct TouchTrans TouchTrans;typedef struct TouchCal TouchCal;typedef struct Vmode Vmode; typedef ulong Instr; #define ISAOPTLEN 16#define NISAOPT 8struct Conf{	ulong	nmach;			/* processors */	ulong	nproc;			/* processes */	ulong	npage0;			/* total physical pages of memory */	ulong	npage1;			/* total physical pages of memory */	ulong	topofmem;		/* highest physical address + 1 */	ulong	npage;			/* total physical pages of memory */	ulong	base0;			/* base of bank 0 */	ulong	base1;			/* base of bank 1 */	ulong	ialloc;			/* max interrupt time allocation in bytes */	ulong	flashbase;	ulong	cpuspeed;	ulong	pagetable; 	int		useminicache;		/* screen.c/lcd.c */	int		cansetbacklight;	/* screen.c/lcd.c */	int		cansetcontrast;		/* screen.c/lcd.c */	int		remaplo;			/* use alt ivec */	int		textwrite;			/* writeable text segment, for debug */}; struct ISAConf {	char	type[KNAMELEN];	ulong	port;	ulong	irq;	ulong	sairq;	ulong	dma;	ulong	mem;	ulong	size;	ulong	freq; 	int	nopt;	char	opt[NISAOPT][ISAOPTLEN];}; /* * FPenv.status */enum{	FPINIT,	FPACTIVE,	FPINACTIVE,}; struct	FPenv{	ulong	status;	ulong	control;	ushort	fpistate;	/* emulated fp */	ulong	regs[8][3];	/* emulated fp */	}; /* * This structure must agree with fpsave and fprestore asm routines */struct	FPU{	FPenv	env;	uchar	regs[80];	/* floating point registers */}; struct Label{	ulong	sp;	ulong	pc;}; struct Lock{	ulong	key;	ulong	sr;	ulong	pc;	int	pri;}; #include "../port/portdat.h" /* *  machine dependent definitions not used by ../port/dat.h */struct Mach{	ulong	ticks;			/* of the clock since boot time */	Proc	*proc;			/* current process on this processor */	Label	sched;			/* scheduler wakeup */	Lock	alarmlock;		/* access to alarm list */	void	*alarm;			/* alarms bound to this clock */	int	machno;	int	nrdy; 	int	stack[1];}; #define	MACHP(n)	(n == 0 ? (Mach*)(MACHADDR) : (Mach*)0) extern Mach Mach0;extern Mach *m;extern Proc *up; typedef struct MemBank {	uint	pbase;	uint	plimit;	uint	vbase;	uint	vlimit;} MemBank; enum {	// DMA configuration parameters 	 // DMA Direction	DmaOUT=		0,	DmaIN=		1, 	 // dma endianess	DmaLittle=	0,	DmaBig=		1, 	 // dma devices	DmaUDC=		0,	DmaSDLC=	2,	DmaUART0=	4,	DmaHSSP=	6,	DmaUART1=	7,	// special case (is really 6)	DmaUART2=	8,	DmaMCPaudio=	10,	DmaMCPtelecom=	12,	DmaSSP=		14,}; enum touch_source {	TOUCH_READ_X1, TOUCH_READ_X2, TOUCH_READ_X3, TOUCH_READ_X4,	TOUCH_READ_Y1, TOUCH_READ_Y2, TOUCH_READ_Y3, TOUCH_READ_Y4,	TOUCH_READ_P1, TOUCH_READ_P2,	TOUCH_READ_RX1, TOUCH_READ_RX2,	TOUCH_READ_RY1, TOUCH_READ_RY2,	TOUCH_NUMRAWCAL = 10,}; struct TouchPnt {	int	x;	int	y;}; struct TouchTrans {	int	xxm;	int	xym;	int	yxm;	int	yym;	int	xa;	int	ya;}; struct TouchCal {	TouchPnt	p[4];	// screen points	TouchPnt	r[4][4];// raw points	TouchTrans 	t[4];	// transformations	TouchPnt	err;	// maximum error	TouchPnt	var;	// usual maximum variance for readings	int 		ptp;	// pressure threshold for press	int		ptr;	// pressure threshold for release}; extern TouchCal touchcal; struct Vmode {	int	wid;	/* 0 -> default or any match for all fields */	int	hgt;	uchar	d;	uchar	hz;	ushort	flags;}; enum {	VMODE_MONO = 0x0001,    /* monochrome display */	VMODE_COLOR = 0x0002,   /* color (RGB) display */	VMODE_TFT = 0x0004,	/* TFT (active matrix) display */	VMODE_STATIC = 0x0010,  /* fixed palette */	VMODE_PSEUDO = 0x0020,  /* changeable palette */	VMODE_LINEAR = 0x0100,  /* linear frame buffer */	VMODE_PAGED = 0x0200,   /* paged frame buffer */	VMODE_PLANAR = 0x1000,  /* pixel bits split between planes */	VMODE_PACKED = 0x2000,  /* pixel bits packed together */	VMODE_LILEND = 0x4000,	/* little endian pixel layout */	VMODE_BIGEND = 0x8000,	/* big endian pixel layout */}; /* *	Interface to PCMCIA stubs */enum {	/* argument to pcmpin() */	PCMready,	PCMeject,	PCMstschng,}; #define	swcursor	1