text: /*
   * Frame buffer driver for Trident Blade and Image series
   *
   * Copyright 2001,2002 - Jani Monoses   <jani@iv.ro>
   *
   *
   * CREDITS:(in order of appearance)
   * 	skeletonfb.c by Geert Uytterhoeven and other fb code in drivers/video
   * 	Special thanks ;) to Mattia Crivellini <tia@mclink.it>
   * 	much inspired by the XFree86 4.x Trident driver sources by Alan Hourihane
   * 	the FreeVGA project
   *	Francesco Salvestrini <salvestrini@users.sf.net> XP support,code,suggestions
   * TODO:
   * 	timing value tweaking so it looks good on every monitor in every mode
   *	TGUI acceleration	
   */
  
  #include <linux/config.h>
  #include <linux/module.h>
  #include <linux/fb.h>
  #include <linux/init.h>
  #include <linux/pci.h>
  
  #include <video/fbcon.h>
  #include <video/fbcon-cfb8.h>
  #include <video/fbcon-cfb16.h>
  #include <video/fbcon-cfb24.h>
  #include <video/fbcon-cfb32.h>
  
  #include "tridentfb.h"
  
  #define VERSION		"0.7.5"
  
  struct tridentfb_par {
  	struct fb_var_screeninfo var;
  	int bpp;
  	int hres;
  	int vres;
  	int linelength;
  	int vclk;		//in MHz
  
  	int vtotal;
  	int vdispend;
  	int vsyncstart;
  	int vsyncend;
  	int vblankstart;
  	int vblankend;
  
  	int htotal;
  	int hdispend;
  	int hsyncstart;
  	int hsyncend;
  	int hblankstart;
  	int hblankend;
  };
  
  struct tridentfb_info {
  	struct fb_info_gen gen;
  	unsigned long fbmem_virt;	//framebuffer virtual memory address
  	unsigned long fbmem;		//framebuffer physical memory address
  	unsigned int memsize;		//size of fbmem
  	unsigned long io;		//io space address
  	unsigned long io_virt;		//iospace virtual memory address
  	unsigned int nativex;		//flat panel xres
  	struct tridentfb_par currentmode;
  	unsigned char eng_oper;		//engine operation...
  };
  
  static struct fb_ops tridentfb_ops;
  
  static struct tridentfb_info fb_info;
  static struct display disp;
  
  static struct { unsigned char red,green,blue,transp; } palette[256];
  
  static struct fb_var_screeninfo default_var;
  
  static char * tridentfb_name = "Trident";
  
  static int chip_id;
  
  static int defaultaccel;
  static int displaytype;
  
  static int pseudo_pal[16];
  
  /* defaults which are normally overriden by user values */
  
  /* video mode */
  static char * mode = "640x480";
  static int bpp = 8;
  
  static int noaccel;
  
  static int center;
  static int stretch;
  
  static int fp;
  static int crt;
  
  static int memsize;
  static int memdiff;
  static int nativex;
  
  
  MODULE_PARM(mode,"s");
  MODULE_PARM(bpp,"i");
  MODULE_PARM(center,"i");
  MODULE_PARM(stretch,"i");
  MODULE_PARM(noaccel,"i");
  MODULE_PARM(memsize,"i");
  MODULE_PARM(memdiff,"i");
  MODULE_PARM(nativex,"i");
  MODULE_PARM(fp,"i");
  MODULE_PARM(crt,"i");
  
  static int chip3D;
  int is3Dchip(int id)
  {
  	return 	((id == BLADE3D) || (id == CYBERBLADEE4) ||
  		 (id == CYBERBLADEi7) || (id == CYBERBLADEi7D) ||
  		 (id == CYBER9397) || (id == CYBER9397DVD) ||
  		 (id == CYBER9520) || (id == CYBER9525DVD) ||
  		 (id == IMAGE975) || (id == IMAGE985) ||
  		 (id == CYBERBLADEi1) || (id == CYBERBLADEi1D) ||
  		 (id ==	CYBERBLADEAi1) || (id == CYBERBLADEAi1D) ||
  		 (id ==	CYBERBLADEXPm8) || (id == CYBERBLADEXPm16) ||
  		 (id ==	CYBERBLADEXPAi1));
  }
  
  #define CRT 0x3D0		//CRTC registers offset for color display
  
  #ifndef TRIDENT_MMIO
  	#define TRIDENT_MMIO 1
  #endif
  
  #if TRIDENT_MMIO
  	#define t_outb(val,reg)	writeb(val,fb_info.io_virt + reg)
  	#define t_inb(reg)	readb(fb_info.io_virt + reg)
  #else
  	#define t_outb(val,reg) outb(val,reg)
  	#define t_inb(reg) inb(reg)
  #endif
  
  
  static struct accel_switch {
  	void (*init_accel)(int,int);
  	void (*wait_engine)(void);
  	void (*fill_rect)(int,int,int,int,int);
  	void (*copy_rect)(int,int,int,int,int,int);
  } *acc;
  
  #define writemmr(r,v)	writel(v, fb_info.io_virt + r)
  #define readmmr(r)	readl(fb_info.io_virt + r)
  
  
  
  /*
   * Blade specific acceleration.
   */
  
  #define point(x,y) ((y)<<16|(x))
  #define STA	0x2120
  #define CMD	0x2144
  #define ROP	0x2148
  #define CLR	0x2160
  #define SR1	0x2100
  #define SR2	0x2104
  #define DR1	0x2108
  #define DR2	0x210C
  
  #define REPL(x)	x = x | x<<16
  #define ROP_S	0xCC
  
  static void blade_init_accel(int pitch,int bpp)
  {
  	int v1 = (pitch>>3)<<20;
  	int tmp = 0,v2;
  	switch (bpp) {
  		case 8:tmp = 0;break;
  		case 15:tmp = 5;break;
  		case 16:tmp = 1;break;
  		case 24:
  		case 32:tmp = 2;break;
  	}
  	v2 = v1 | (tmp<<29);
  	writemmr(0x21C0,v2);
  	writemmr(0x21C4,v2);
  	writemmr(0x21B8,v2);
  	writemmr(0x21BC,v2);
  	writemmr(0x21D0,v1);
  	writemmr(0x21D4,v1);
  	writemmr(0x21C8,v1);
  	writemmr(0x21CC,v1);
  	writemmr(0x216C,0);
  }
  
  static void blade_wait_engine(void)
  {
  	while(readmmr(STA) & 0xFA800000);
  }
  
  static void blade_fill_rect(int x,int y,int w,int h,int c)
  {
  	writemmr(CLR,c);
  	writemmr(ROP,ROP_S);
  	writemmr(CMD,0x20000000|1<<19|1<<4|2<<2);
  
  	writemmr(DR1,point(x,y));
  	writemmr(DR2,point(x+w-1,y+h-1));
  }
  
  static void blade_copy_rect(int x1,int y1,int x2,int y2,int w,int h)
  {
  	int s1,s2,d1,d2;
  	int direction = 2;
  	s1 = point(x1,y1);
  	s2 = point(x1+w-1,y1+h-1);
  	d1 = point(x2,y2);
  	d2 = point(x2+w-1,y2+h-1);
  
  	if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
  			direction = 0;
  
  
  	writemmr(ROP,ROP_S);
  	writemmr(CMD,0xE0000000|1<<19|1<<4|1<<2|direction);
  
  	writemmr(SR1,direction?s2:s1);
  	writemmr(SR2,direction?s1:s2);
  	writemmr(DR1,direction?d2:d1);
  	writemmr(DR2,direction?d1:d2);
  }
  
  static struct accel_switch accel_blade = {
  	blade_init_accel,
  	blade_wait_engine,
  	blade_fill_rect,
  	blade_copy_rect,
  };
  
  
  /*
   * BladeXP specific acceleration functions
   */
  
  #define ROP_P 0xF0
  #define masked_point(x,y) ((y & 0xffff)<<16|(x & 0xffff))
  
  static void xp_init_accel(int pitch,int bpp)
  {
  	int tmp = 0,v1;
  	unsigned char x = 0;
  
  	switch (bpp) {
  		case 8:  x = 0; break;
  		case 16: x = 1; break;
  		case 24: x = 3; break;
  		case 32: x = 2; break;
  	}
  
  	switch (pitch << (bpp >> 3)) {
  		case 8192:
  		case 512:  x |= 0x00; break;
  		case 1024: x |= 0x04; break;
  		case 2048: x |= 0x08; break;
  		case 4096: x |= 0x0C; break;
  	}
  
  	t_outb(x,0x2125);
  
  	fb_info.eng_oper = x | 0x40;
  
  	switch (bpp) {
  		case 8:  tmp = 18; break;
  		case 15:
  		case 16: tmp = 19; break;
  		case 24:
  		case 32: tmp = 20; break;
  	}
  
  	v1 = pitch << tmp;
  
  	writemmr(0x2154,v1);
  	writemmr(0x2150,v1);
  	t_outb(3,0x2126);
  }
  
  static void xp_wait_engine(void)
  {
  	int busy;
  	int count, timeout;
  
  	count = 0;
  	timeout = 0;
  	for (;;) {
  		busy = t_inb(STA) & 0x80;
  		if (busy != 0x80)
  			return;
  		count++;
  		if (count == 10000000) {
  			/* Timeout */
  			count = 9990000;
  			timeout++;
  			if (timeout == 8) {
  				/* Reset engine */
  				t_outb(0x00, 0x2120);
  				return;
  			}
  		}
  	}
  }
  
  static void xp_fill_rect(int x,int y,int w,int h,int c)
  {
  	writemmr(0x2127,ROP_P);
  	writemmr(0x2158,c);
  	writemmr(0x2128,0x4000);
  	writemmr(0x2140,masked_point(h,w));
  	writemmr(0x2138,masked_point(y,x));
  	t_outb(0x01,0x2124);
          t_outb(fb_info.eng_oper,0x2125);
  }
  
  static void xp_copy_rect(int x1,int y1,int x2,int y2,int w,int h)
  {
  	int direction;
  	int x1_tmp, x2_tmp, y1_tmp, y2_tmp;
  
  	direction = 0x0004;
  	
  	if ((x1 < x2) && (y1 == y2)) {
  		direction |= 0x0200;
  		x1_tmp = x1 + w - 1;
  		x2_tmp = x2 + w - 1;
  	} else {
  		x1_tmp = x1;
  		x2_tmp = x2;
  	}
    
  	if (y1 < y2) {
  		direction |= 0x0100;
  		y1_tmp = y1 + h - 1;
  		y2_tmp = y2 + h - 1;
    	} else {
  		y1_tmp = y1;
  		y2_tmp = y2;
  	}
  
  	writemmr(0x2128,direction);	
  	t_outb(ROP_S,0x2127);
  	writemmr(0x213C,masked_point(y1_tmp,x1_tmp));
  	writemmr(0x2138,masked_point(y2_tmp,x2_tmp));
  	writemmr(0x2140,masked_point(h,w));
  	t_outb(0x01,0x2124);
  }
  
  static struct accel_switch accel_xp = {
    	xp_init_accel,
  	xp_wait_engine,
  	xp_fill_rect,
  	xp_copy_rect,
  };
  
  
  /*
   * Image specific acceleration functions
   */
  static void image_init_accel(int pitch,int bpp)
  {
  	int tmp = 0;
     	switch (bpp) {
  		case 8:tmp = 0;break;
  		case 15:tmp = 5;break;
  		case 16:tmp = 1;break;
  		case 24:
  		case 32:tmp = 2;break;
  	}
  	writemmr(0x2120, 0xF0000000);
  	writemmr(0x2120, 0x40000000|tmp);
  	writemmr(0x2120, 0x80000000);
  	writemmr(0x2144, 0x00000000);
  	writemmr(0x2148, 0x00000000);
  	writemmr(0x2150, 0x00000000);
  	writemmr(0x2154, 0x00000000);
  	writemmr(0x2120, 0x60000000|(pitch<<16) |pitch);
  	writemmr(0x216C, 0x00000000);
  	writemmr(0x2170, 0x00000000);
  	writemmr(0x217C, 0x00000000);
  	writemmr(0x2120, 0x10000000);
  	writemmr(0x2130, (2047 << 16) | 2047);
  }
  
  static void image_wait_engine(void)
  {
  	while(readmmr(0x2164) & 0xF0000000);
  }
  
  static void image_fill_rect(int x,int y,int w,int h,int c)
  {
  	writemmr(0x2120,0x80000000);
  	writemmr(0x2120,0x90000000|ROP_S);
  
  	writemmr(0x2144,c);
  
  	writemmr(DR1,point(x,y));
  	writemmr(DR2,point(x+w-1,y+h-1));
  
  	writemmr(0x2124,0x80000000|3<<22|1<<10|1<<9);
  }
  
  static void image_copy_rect(int x1,int y1,int x2,int y2,int w,int h)
  {
  	int s1,s2,d1,d2;
  	int direction = 2;
  	s1 = point(x1,y1);
  	s2 = point(x1+w-1,y1+h-1);
  	d1 = point(x2,y2);
  	d2 = point(x2+w-1,y2+h-1);
  
  	if ((y1 > y2) || ((y1 == y2) && (x1 >x2)))
  			direction = 0;
  
  	writemmr(0x2120,0x80000000);
  	writemmr(0x2120,0x90000000|ROP_S);
  
  	writemmr(SR1,direction?s2:s1);
  	writemmr(SR2,direction?s1:s2);
  	writemmr(DR1,direction?d2:d1);
  	writemmr(DR2,direction?d1:d2);
  	writemmr(0x2124,0x80000000|1<<22|1<<10|1<<7|direction);
  }
  
  
  static struct accel_switch accel_image = {
  	image_init_accel,
  	image_wait_engine,
  	image_fill_rect,
  	image_copy_rect,
  };
  
  /*
   * Accel functions called by the upper layers
   */
  
  static void trident_bmove (struct display *p, int sy, int sx,
  				int dy, int dx, int height, int width)
  {
  	sx *= fontwidth(p);
  	dx *= fontwidth(p);
  	width *= fontwidth(p);
  	sy *= fontheight(p);
  	dy *= fontheight(p);
  	height *= fontheight(p);
  	acc->copy_rect(sx,sy,dx,dy,width,height);
  	acc->wait_engine();
  }
  static void trident_clear_helper (int c, struct display *p,
  				int sy, int sx, int height, int width)
  {
  	sx *= fontwidth(p);
  	sy *= fontheight(p);
  	width *= fontwidth(p);
  	height *= fontheight(p);
  	acc->fill_rect(sx,sy,width,height,c);
  	acc->wait_engine();
  }
  
  
  #ifdef FBCON_HAS_CFB8
  static void trident_8bpp_clear (struct vc_data *conp, struct display *p,
  				int sy, int sx, int height, int width)
  {
  	int c;
  	c = attr_bgcol_ec(p,conp) & 0xFF;
  	c |= c<<8;
  	c |= c<<16;
  	trident_clear_helper(c,p,sy,sx,height,width);
  }
  
  static struct display_switch trident_8bpp = {
  	setup:		fbcon_cfb8_setup,
  	bmove:		trident_bmove,
  	clear:		trident_8bpp_clear,
  	putc:		fbcon_cfb8_putc,
  	putcs:		fbcon_cfb8_putcs,
  	revc:		fbcon_cfb8_revc,
  	clear_margins:	fbcon_cfb8_clear_margins,
  	fontwidthmask:	FONTWIDTH (4) | FONTWIDTH (8) | FONTWIDTH (12) | FONTWIDTH (16)
  };
  #endif
  #ifdef FBCON_HAS_CFB16
  static void trident_16bpp_clear (struct vc_data *conp, struct display *p,
  				int sy, int sx, int height, int width)
  {
  	int c;
  	c = ((u16*)p->dispsw_data)[attr_bgcol_ec(p,conp)];
  	c = c | c<<16;
  	trident_clear_helper(c,p,sy,sx,height,width);
  }
  
  static struct display_switch trident_16bpp = {
  	setup:		fbcon_cfb16_setup,
  	bmove:		trident_bmove,
  	clear:		trident_16bpp_clear,
  	putc:		fbcon_cfb16_putc,
  	putcs:		fbcon_cfb16_putcs,
  	revc:		fbcon_cfb16_revc,
  	clear_margins:	fbcon_cfb16_clear_margins,
  	fontwidthmask:	FONTWIDTH (4) | FONTWIDTH (8) | FONTWIDTH (12) | FONTWIDTH (16)
  };
  #endif
  #ifdef FBCON_HAS_CFB32
  static void trident_32bpp_clear (struct vc_data *conp, struct display *p,
  				int sy, int sx, int height, int width)
  {
  	int c;
  	c = ((u32*)p->dispsw_data)[attr_bgcol_ec(p,conp)];
  	trident_clear_helper(c,p,sy,sx,height,width);
  }
  
  static struct display_switch trident_32bpp = {
  	setup:		fbcon_cfb32_setup,
  	bmove:		trident_bmove,
  	clear:		trident_32bpp_clear,
  	putc:		fbcon_cfb32_putc,
  	putcs:		fbcon_cfb32_putcs,
  	revc:		fbcon_cfb32_revc,
  	clear_margins:	fbcon_cfb32_clear_margins,
  	fontwidthmask:	FONTWIDTH (4) | FONTWIDTH (8) | FONTWIDTH (12) | FONTWIDTH (16)
  };
  #endif
  
  /*
   * Hardware access functions
   */
  
  static inline unsigned char read3X4(int reg)
  {
  	writeb(reg, fb_info.io_virt + CRT + 4);
  	return readb(fb_info.io_virt + CRT + 5);
  }
  
  static inline void write3X4(int reg, unsigned char val)
  {
  	writeb(reg, fb_info.io_virt + CRT + 4);
  	writeb(val, fb_info.io_virt + CRT + 5);
  }
  
  static inline unsigned char read3C4(int reg)
  {
  	t_outb(reg, 0x3C4);
  	return t_inb(0x3C5);
  }
  
  static inline void write3C4(int reg, unsigned char val)
  {
  	t_outb(reg, 0x3C4);
  	t_outb(val, 0x3C5);
  }
  
  static inline unsigned char read3CE(int reg)
  {
  	t_outb(reg, 0x3CE);
  	return t_inb(0x3CF);
  }
  
  static inline void writeAttr(int reg, unsigned char val)
  {
  	readb(fb_info.io_virt + CRT + 0x0A);	//flip-flop to index
  	t_outb(reg, 0x3C0);
  	t_outb(val, 0x3C0);
  }
  
  static inline unsigned char readAttr(int reg)
  {
  	readb(fb_info.io_virt + CRT + 0x0A);	//flip-flop to index
  	t_outb(reg, 0x3C0);
  	return t_inb(0x3C1);
  }
  
  static inline void write3CE(int reg, unsigned char val)
  {
  	t_outb(reg, 0x3CE);
  	t_outb(val, 0x3CF);
  }
  
  #define bios_reg(reg) 	write3CE(BiosReg, reg)
  #if 0
  static inline void unprotect_all(void)
  {
  	outb(Protection, 0x3C4);
  	outb(0x92, 0x3C5);
  }
  #endif
  static inline void enable_mmio(void)
  {
  	/* Goto New Mode */
  	outb(0x0B, 0x3C4);
  	inb(0x3C5);
  
  	/* Unprotect registers */
  	outb(NewMode1, 0x3C4);
  	outb(0x80, 0x3C5);
    
  	/* Enable MMIO */
  	outb(PCIReg, 0x3D4); 
  	outb(inb(0x3D5) | 0x01, 0x3D5);
  }
  
  
  #define crtc_unlock()	write3X4(CRTVSyncEnd, read3X4(CRTVSyncEnd) & 0x7F)
  
  /*  Return flat panel's maximum x resolution */
  static int __init get_nativex(void)
  {
  	int x,y,tmp;
  
  	if (nativex)
  		return nativex;
  
         	tmp = (read3CE(VertStretch) >> 4) & 3;
  
  	switch (tmp) {
  		case 0: x = 1280; y = 1024; break;
  		case 2: x = 1024; y = 768;  break;
  		case 3: x = 800;  y = 600;  break; 
  		case 4: x = 1400; y = 1050; break;
  		case 1: 
  		default:x = 640;  y = 480;  break;
  	}
  
  	output("%dx%d flat panel found\n", x, y);
  	return x;
  }
  
  /* Set pitch */
  static void set_lwidth(int width)
  {
  	write3X4(Offset, width & 0xFF);
  	write3X4(AddColReg, (read3X4(AddColReg) & 0xCF) | ((width & 0x300) >>4));
  }
  
  /* For resolutions smaller than FP resolution stretch */
  static void screen_stretch(void)
  {
  	write3CE(VertStretch,(read3CE(VertStretch) & 0x7C) | 1);
  	write3CE(HorStretch,(read3CE(HorStretch) & 0x7C) | 1);
  }
  
  /* For resolutions smaller than FP resolution center */
  static void screen_center(void)
  {
  	bios_reg(0);		// no stretch
  	write3CE(VertStretch,(read3CE(VertStretch) & 0x7C) | 0x80);
  	write3CE(HorStretch,(read3CE(HorStretch) & 0x7C) | 0x80);
  }
  
  /* Address of first shown pixel in display memory */
  static void set_screen_start(int base)
  {
  	write3X4(StartAddrLow, base & 0xFF);
  	write3X4(StartAddrHigh, (base & 0xFF00) >> 8);
  	write3X4(CRTCModuleTest, (read3X4(CRTCModuleTest) & 0xDF) | ((base & 0x10000) >> 11));
  	write3X4(CRTHiOrd, (read3X4(CRTHiOrd) & 0xF8) | ((base & 0xE0000) >> 17));
  }
  
  /* Use 20.12 fixed-point for NTSC value and frequency calculation */
  #define calc_freq(n,m,k)  ( ((unsigned long)0xE517 * (n+8) / ((m+2)*(1<<k))) >> 12 )
  
  /* Set dotclock frequency */
  static void set_vclk(int freq)
  {
  	int m,n,k;
  	int f,fi,d,di;
  	unsigned char lo=0,hi=0;
  
  	d = 20;
  	for(k = 2;k>=0;k--)
  	for(m = 0;m<63;m++)
  	for(n = 0;n<128;n++) {
  		fi = calc_freq(n,m,k);
  		if ((di = abs(fi - freq)) < d) {
  			d = di;
  			f = fi;
  			lo = n;
  			hi = (k<<6) | m;
  		}
  	}
  	if (chip3D) {
  		write3C4(ClockHigh,hi);
  		write3C4(ClockLow,lo);
  	} else {
  		outb(lo,0x43C8);
  		outb(hi,0x43C9);
  	}
  	debug("VCLK = %X %X\n",hi,lo);
  }
  
  /* Set number of lines for flat panels*/
  static void set_number_of_lines(int lines)
  {
  	int tmp = read3CE(CyberEnhance) & 0x8F;
  	if (lines > 768)
  		tmp |= 0x30;
  	else if (lines > 600)
  		tmp |= 0x20;
  	else if (lines > 480)
  		tmp |= 0x10;
  	write3CE(CyberEnhance, tmp);
  }
  
  /*
   * If we see that FP is active we assume we have one.
   * Otherwise we have a CRT display.User can override.
   */
  static unsigned int __init get_displaytype(void)
  {
  	if (fp)
  		return DISPLAY_FP;
  	if (crt)
  		return DISPLAY_CRT;
  	return (read3CE(FPConfig) & 0x10)?DISPLAY_FP:DISPLAY_CRT;
  }
  
  /* Try detecting the video memory size */
  static unsigned int __init get_memsize(void)
  {
  	unsigned char tmp, tmp2;
  	unsigned int k;
  
  	/* If memory size provided by user */
  	if (memsize)
  		k = memsize * Kb;
  	else
  	switch (chip_id) {
  		case CYBER9525DVD:    k = 2560 * Kb; break;
  		default:
  			tmp = read3X4(SPR) & 0x0F;
  			switch (tmp) {
  
  				case 0x01: k = 512;     break;
  				case 0x02: k = 6 * Mb;  break; /* XP */
  				case 0x03: k = 1 * Mb;  break;
  				case 0x04: k = 8 * Mb;  break;
  				case 0x06: k = 10 * Mb; break; /* XP */
  				case 0x07: k = 2 * Mb;  break;
  				case 0x08: k = 12 * Mb; break; /* XP */
  				case 0x0A: k = 14 * Mb; break; /* XP */
  				case 0x0C: k = 16 * Mb; break; /* XP */
  				case 0x0E:                     /* XP */
    
  					tmp2 = read3C4(0xC1);
  					switch (tmp2) {
  						case 0x00: k = 20 * Mb; break;
  						case 0x01: k = 24 * Mb; break;
  						case 0x10: k = 28 * Mb; break;
  						case 0x11: k = 32 * Mb; break;
  						default:   k = 1 * Mb;  break;
  					}
  				break;
  	
  				case 0x0F: k = 4 * Mb; break;
  				default:   k = 1 * Mb;
  			}
  	}
  
  	k -= memdiff * Kb;
  	output("framebuffer size = %d Kb\n", k/Kb);
  	return k;
  }
  
  /* Fill in fix */
  static int trident_encode_fix(struct fb_fix_screeninfo *fix,
  				  const void *par,
  				  struct fb_info_gen *info)
  {
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  	struct tridentfb_par * p = (struct tridentfb_par *)par;
  
  	debug("enter\n");
  
  	memset(fix, 0, sizeof(struct fb_fix_screeninfo));
  	strcpy(fix->id,tridentfb_name);
  
  	fix->smem_start = i->fbmem;
  	fix->smem_len = i->memsize;
  
  	fix->type = FB_TYPE_PACKED_PIXELS;
  	fix->type_aux = 0;
  
  	fix->visual = p->bpp==8 ? FB_VISUAL_PSEUDOCOLOR:FB_VISUAL_TRUECOLOR;
  
  	fix->xpanstep = fix->ywrapstep = 0;
  	fix->ypanstep = 1;
  	fix->line_length = p->linelength;
  	fix->mmio_start = 0;
  	fix->mmio_len = 0;
  
  	fix->accel = FB_ACCEL_NONE;
  
  	debug("exit\n");
  	return 0;
  }
  
  /* Fill in par from var */
  static int trident_decode_var(const struct fb_var_screeninfo *var,
  				  void *par,
  				  struct fb_info_gen *info)
  {
  	struct tridentfb_par * p = (struct tridentfb_par *)par;
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  	int vres,vfront,vback,vsync;
  	debug("enter\n");
  	p->var = *var;
  	p->bpp = var->bits_per_pixel;
  
  	if (p->bpp == 24 )
  		p->bpp = 32;
  
  	p->linelength = var->xres_virtual * p->bpp/8;
  
  	switch (p->bpp) {
  		case 8:
  			p->var.red.offset = 0;
  			p->var.green.offset = 0;
  			p->var.blue.offset = 0;
  			p->var.red.length = 6;
  			p->var.green.length = 6;
  			p->var.blue.length = 6;
  			break;
  		case 16:
  			p->var.red.offset = 11;
  			p->var.green.offset = 5;
  			p->var.blue.offset = 0;
  			p->var.red.length = 5;
  			p->var.green.length = 6;
  			p->var.blue.length = 5;
  			break;
  		case 32:
  			p->var.red.offset = 16;
  			p->var.green.offset = 8;
  			p->var.blue.offset = 0;
  			p->var.red.length = 8;
  			p->var.green.length = 8;
  			p->var.blue.length = 8;
  			break;
  		default:
  			return -EINVAL;
  	}
  
  	/* convert from picoseconds to MHz */
  	p->vclk = 1000000/var->pixclock;
  
  	if (p->bpp == 32)
  		p->vclk *=2;
  
  	p->hres = var->xres;
  	vres = p->vres = var->yres;
  
  	/* See if requested resolution is larger than flat panel */
  	if (p->hres > i->nativex && flatpanel) {
  		return -EINVAL;
  	}
  
  	/* See if requested resolution fits in available memory */
  	if (p->hres * p->vres * p->bpp/8 > i->memsize) {
  		return -EINVAL;
  	}
  
  	vfront = var->upper_margin;
  	vback =	var->lower_margin;
  	vsync =	var->vsync_len;
  
  	/* Compute horizontal and vertical VGA CRTC timing values */
  	if (var->vmode & FB_VMODE_INTERLACED) {
  		vres /= 2;
  		vfront /=2;
  		vback /=2;
  		vsync /=2;
  	}
  
  	if (var->vmode & FB_VMODE_DOUBLE) {
  		vres *= 2;
  		vfront *=2;
  		vback *=2;
  		vsync *=2;
  	}
  
  	p->htotal = (p->hres + var->left_margin + var->right_margin + var->hsync_len)/8 - 10;
  	p->hdispend = p->hres/8 - 1;
  	p->hsyncstart = (p->hres + var->right_margin)/8;
  	p->hsyncend = var->hsync_len/8;
  	p->hblankstart = p->hdispend + 1;
  	p->hblankend = p->htotal + 5;
  
  	p->vtotal = vres + vfront + vback + vsync - 2;
  	p->vdispend = vres - 1;
  	p->vsyncstart = vres + vback;
  	p->vsyncend = vsync;
  	p->vblankstart = vres;
  	p->vblankend = p->vtotal + 2;
  
  	debug("exit\n");
  
  	return 0;
  }
  
  
  /* Fill in var from info */
  static int trident_encode_var(struct fb_var_screeninfo *var,
  				  const void *par,
  				  struct fb_info_gen *info)
  {
  	struct tridentfb_par * p = (struct tridentfb_par *)par;
  	debug("enter\n");
  	*var = p->var;
  	var->bits_per_pixel = p->bpp;
  	debug("exit\n");
  	return 0;
  }
  
  /* Fill in par from hardware */
  static void trident_get_par(void *par, struct fb_info_gen *info)
  {
  	struct tridentfb_par * p = (struct tridentfb_par *)par;
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  
  	debug("enter\n");
  	*p = i->currentmode;
  	debug("exit\n");
  }
  
  /* Pan the display */
  static int trident_pan_display(const struct fb_var_screeninfo *var,
  				   struct fb_info_gen *info)
  {
  	unsigned int offset;
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  
  	debug("enter\n");
  
  	offset = (var->xoffset + (var->yoffset * var->xres))
  			* var->bits_per_pixel/32;
  	i->currentmode.var.xoffset = var->xoffset;
  	i->currentmode.var.yoffset = var->yoffset;
  	set_screen_start(offset);
  	debug("exit\n");
  	return 0;
  }
  
  /* Set the hardware from par */
  static void trident_set_par(const void *par, struct fb_info_gen *info)
  {
  	struct tridentfb_par * p = (struct tridentfb_par *)par;
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  	unsigned char tmp;
  	debug("enter\n");
  
  	i->currentmode = *p;
  	enable_mmio();
  	crtc_unlock();
  
  	write3CE(CyberControl,8);
  	if (flatpanel && p->hres < i->nativex) {
  		/*
  		 * on flat panels with native size larger
  		 * than requested resolution decide whether
  		 * we stretch or center
  		 */
  		t_outb(0xEB,0x3C2);
  		write3CE(CyberControl,0x81);
  		if (center) 
  			screen_center();
  		else if (stretch)
  			screen_stretch();
  
  	} else {
  		t_outb(0x2B,0x3C2);
  		write3CE(CyberControl,8);
  	}
  
  	/* vertical timing values */
  	write3X4(CRTVTotal, p->vtotal & 0xFF);
  	write3X4(CRTVDispEnd, p->vdispend & 0xFF);
  	write3X4(CRTVSyncStart, p->vsyncstart & 0xFF);
  	write3X4(CRTVSyncEnd, (p->vsyncend & 0x0F));
  	write3X4(CRTVBlankStart, p->vblankstart & 0xFF);
  	write3X4(CRTVBlankEnd, 0/*p->vblankend & 0xFF*/);
  
  	/* horizontal timing values */
  	write3X4(CRTHTotal, p->htotal & 0xFF);
  	write3X4(CRTHDispEnd, p->hdispend & 0xFF);
  	write3X4(CRTHSyncStart, p->hsyncstart & 0xFF);
  	write3X4(CRTHSyncEnd, (p->hsyncend & 0x1F) | ((p->hblankend & 0x20)<<2));
  	write3X4(CRTHBlankStart, p->hblankstart & 0xFF);
  	write3X4(CRTHBlankEnd, 0/*(p->hblankend & 0x1F)*/);
  
  	/* higher bits of vertical timing values */
  	tmp = 0x10;
  	if (p->vtotal & 0x100) tmp |= 0x01;
  	if (p->vdispend & 0x100) tmp |= 0x02;
  	if (p->vsyncstart & 0x100) tmp |= 0x04;
  	if (p->vblankstart & 0x100) tmp |= 0x08;
  
  	if (p->vtotal & 0x200) tmp |= 0x20;
  	if (p->vdispend & 0x200) tmp |= 0x40;
  	if (p->vsyncstart & 0x200) tmp |= 0x80;
  
  	write3X4(CRTOverflow, tmp);
  
  
  	tmp = read3X4(CRTHiOrd) | 0x08;	//line compare bit 10
  
  	if (p->vtotal & 0x400) tmp |= 0x80;
  	if (p->vblankstart & 0x400) tmp |= 0x40;
  	if (p->vsyncstart & 0x400) tmp |= 0x20;
  	if (p->vdispend & 0x400) tmp |= 0x10;
  	write3X4(CRTHiOrd, tmp);
  
  	write3X4(HorizOverflow, 0);
  
  	tmp = 0x40;
  	if (p->vblankstart & 0x200) tmp |= 0x20;
  	if (p->var.vmode & FB_VMODE_DOUBLE) tmp |= 0x80;  //double scan for 200 line modes
  	write3X4(CRTMaxScanLine, tmp);
  	write3X4(CRTLineCompare,0xFF);
  	write3X4(CRTPRowScan,0);
  	write3X4(CRTModeControl,0xC3);
  	write3X4(LinearAddReg,0x20);	//enable linear addressing
  	tmp = (p->var.vmode & FB_VMODE_INTERLACED) ? 0x84:0x80;
  	write3X4(CRTCModuleTest,tmp);	//enable access extended memory
  	write3X4(GraphEngReg, 0x80);	//enable GE for text acceleration
  
  	if (p->var.accel_flags & FB_ACCELF_TEXT)
  		acc->init_accel(p->hres,p->bpp);
  
  	switch (p->bpp) {
  		case 8:tmp=0;break;
  		case 16:tmp=5;break;
  		case 24:
  			/* tmp=0x29;break; */
  			/* seems like 24bpp is same as 32bpp when using vesafb */
  		case 32:tmp=9;break;
  	}
  	write3X4(PixelBusReg, tmp);
  
  	write3X4(InterfaceSel, 0x5B);	//32bit internal data path
  	write3X4(DRAMControl, 0x30);	//both IO,linear enable
  	write3X4(Performance, 0xBF);
  	write3X4(PCIReg,0x07);		//MMIO & PCI read and write burst enable
  
  	set_vclk(p->vclk);
  
  	write3C4(0,3);
  	write3C4(1,1);		//set char clock 8 dots wide
  	write3C4(2,0x0F);	//enable 4 maps because needed in chain4 mode
  	write3C4(3,0);
  	write3C4(4,0x0E);	//memory mode enable bitmaps ??
  
  	write3CE(MiscExtFunc,(p->bpp==32)?0x1A:0x12);	//divide clock by 2 if 32bpp
  							//chain4 mode display and CPU path
  	write3CE(0x5,0x40);	//no CGA compat,allow 256 col
  	write3CE(0x6,0x05);	//graphics mode
  	write3CE(0x7,0x0F);	//planes?
  
  	writeAttr(0x10,0x41);	//graphics mode and support 256 color modes
  	writeAttr(0x12,0x0F);	//planes
  	writeAttr(0x13,0);	//horizontal pel panning
  
  	//colors
  	for(tmp = 0;tmp < 0x10;tmp++)
  		writeAttr(tmp,tmp);
  	readb(fb_info.io_virt + CRT + 0x0A);	//flip-flop to index
  	t_outb(0x20, 0x3C0);			//enable attr
  
  	switch (p->bpp) {
  		case 8:	tmp = 0;break;		//256 colors
  		case 15: tmp = 0x10;break;
  		case 16: tmp = 0x30;break;	//hicolor
  		case 24: 			//truecolor
  		case 32: tmp = 0xD0;break;
  	}
  
  	t_inb(0x3C8);
  	t_inb(0x3C6);
  	t_inb(0x3C6);
  	t_inb(0x3C6);
  	t_inb(0x3C6);
  	t_outb(tmp,0x3C6);
  	t_inb(0x3C8);
  
  	if (flatpanel)
  		set_number_of_lines(p->vres);
  	set_lwidth(p->hres*p->bpp/(4*16));
  
  	trident_pan_display(&p->var,info);
  	debug("exit\n");
  }
  
  /* Get value of one color register */
  static int trident_getcolreg(unsigned regno, unsigned *red,
  				 unsigned *green, unsigned *blue,
  				 unsigned *transp, struct fb_info *info)
  {
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  	int m = i->currentmode.bpp==8?256:16;
  
  	debug("enter %d\n",regno);
  
  	if (regno >= m)
  		return 1;
  
  	*red = palette[regno].red;
  	*green = palette[regno].green;
  	*blue = palette[regno].blue;
  	*transp = palette[regno].transp;
  
  	debug("exit\n");
  	return 0;
  }
  
  /* Set one color register */
  static int trident_setcolreg(unsigned regno, unsigned red, unsigned green,
  				 unsigned blue, unsigned transp,
  				 struct fb_info *info)
  {
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  	int bpp = i->currentmode.bpp;
  	int m = bpp==8?256:16;
  
  	debug("enter %d\n",regno);
  
  	if (regno >= m)
  		return 1;
  
  	palette[regno].red = red;
  	palette[regno].green = green;
  	palette[regno].blue = blue;
  	palette[regno].transp = transp;
  
  	if (bpp==8) {
  		t_outb(0xFF,0x3C6);
  		t_outb(regno,0x3C8);
  
  		t_outb(red>>10,0x3C9);
  		t_outb(green>>10,0x3C9);
  		t_outb(blue>>10,0x3C9);
  
  	} else
  	if (bpp == 16) 			/* RGB 565 */
  			((u16*)info->pseudo_palette)[regno] = (red & 0xF800) |
  			((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
  	else
  	if (bpp == 32)		/* ARGB 8888 */
  		((u32*)info->pseudo_palette)[regno] =
  			((transp & 0xFF00) <<16) 	|
  			((red & 0xFF00) << 8) 		|
  			((green & 0xFF00))		|
  			((blue & 0xFF00)>>8);
  
  	debug("exit\n");
  	return 0;
  }
  
  /* Try blanking the screen.For flat panels it does nothing */
  static int trident_blank(int blank_mode, struct fb_info_gen *info)
  {
  	unsigned char PMCont,DPMSCont;
  
  	debug("enter\n");
  	if (flatpanel)
  		return 0;
  	t_outb(0x04,0x83C8); /* Read DPMS Control */
  	PMCont = t_inb(0x83C6) & 0xFC;
  	DPMSCont = read3CE(PowerStatus) & 0xFC;
  	switch (blank_mode)
  	{
  	case VESA_NO_BLANKING:
  		/* Screen: On, HSync: On, VSync: On */
  		PMCont |= 0x03;
  		DPMSCont |= 0x00;
  		break;
  	case VESA_HSYNC_SUSPEND:
  		/* Screen: Off, HSync: Off, VSync: On */
  		PMCont |= 0x02;
  		DPMSCont |= 0x01;
  		break;
  	case VESA_VSYNC_SUSPEND:
  		/* Screen: Off, HSync: On, VSync: Off */
  		PMCont |= 0x02;
  		DPMSCont |= 0x02;
  		break;
  	case VESA_POWERDOWN:
  		/* Screen: Off, HSync: Off, VSync: Off */
  		PMCont |= 0x00;
  		DPMSCont |= 0x03;
  		break;
      	}
  
  	write3CE(PowerStatus,DPMSCont);
  	t_outb(4,0x83C8);
  	t_outb(PMCont,0x83C6);
  
  	debug("exit\n");
  	return 0;
  }
  
  /* Set display switch used by console */
  static void trident_set_disp(const void *par, struct display *disp,
  				 struct fb_info_gen *info)
  {
  	struct tridentfb_info * i = (struct tridentfb_info *)info;
  	struct fb_info * ii = (struct fb_info *)info;
  	struct tridentfb_par * p = (struct tridentfb_par *)par;
  	int isaccel = p->var.accel_flags & FB_ACCELF_TEXT;
  
  	disp->screen_base = (char *)i->fbmem_virt;
  	debug("enter\n");
  #ifdef FBCON_HAS_CFB8
  	if (p->bpp == 8 ) {
  		if (isaccel)
  			disp->dispsw = &trident_8bpp;
  		else
  			disp->dispsw = &fbcon_cfb8;
  	} else
  #endif
  #ifdef FBCON_HAS_CFB16
  	if (p->bpp == 16) {
  		if (isaccel)
  			disp->dispsw = &trident_16bpp;
  		else
  			disp->dispsw = &fbcon_cfb16;
  		disp->dispsw_data =ii->pseudo_palette;	/* console palette */
  	} else
  #endif
  #ifdef FBCON_HAS_CFB32
  	if (p->bpp == 32) {
  		if (isaccel)
  			disp->dispsw = &trident_32bpp;
  		else
  			disp->dispsw = &fbcon_cfb32;
  		disp->dispsw_data =ii->pseudo_palette;	/* console palette */
  	} else
  #endif
  	disp->dispsw = &fbcon_dummy;
  	debug("exit\n");
  }
  
  static struct fbgen_hwswitch trident_hwswitch = {
  	NULL, /* detect not needed */
  	trident_encode_fix,
  	trident_decode_var,
  	trident_encode_var,
  	trident_get_par,
  	trident_set_par,
  	trident_getcolreg,
  	trident_setcolreg,
  	trident_pan_display,
  	trident_blank,
  	trident_set_disp
  };
  
  static int trident_iosize;
  
  static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_device_id * id)
  {
  	int err;
  	unsigned char revision;
  
  	err = pci_enable_device(dev);
  	if (err)
  		return err;
  
  	chip_id = id->device;
  
  	/* If PCI id is 0x9660 then further detect chip type */
  	
  	if (chip_id == TGUI9660) {
  		outb(RevisionID,0x3C4);
  		revision = inb(0x3C5);	
  	
  		switch (revision) {
  			case 0x22:
  			case 0x23: chip_id = CYBER9397;break;
  			case 0x2A: chip_id = CYBER9397DVD;break;
  			case 0x30:
  			case 0x33:
  			case 0x34:
  			case 0x35:
  			case 0x38:
  			case 0x3A:
  			case 0xB3: chip_id = CYBER9385;break;
  			case 0x40 ... 0x43: chip_id = CYBER9382;break;
  			case 0x4A: chip_id = CYBER9388;break;
  			default:break;	
  		}
  	}
  
  	chip3D = is3Dchip(chip_id);
  
  	if (is_xp(chip_id)) {
  		acc = &accel_xp;
  	} else 
  	if (is_blade(chip_id)) {
  		acc = &accel_blade;
  	} else {
  		acc = &accel_image;
  	}
  
  	/* acceleration is on by default for 3D chips */
  	defaultaccel = chip3D && !noaccel;
  
  	fb_info.io = pci_resource_start(dev,1);
  	fb_info.fbmem = pci_resource_start(dev,0);
  
  	trident_iosize = chip3D ? 0x20000:0x10000;
  
  	if (!request_mem_region(fb_info.io, trident_iosize, "tridentfb")) {
  		debug("request_region failed!\n");
  		return -1;
  	}
  
  	fb_info.io_virt = (unsigned long)ioremap_nocache(fb_info.io, trident_iosize);
  
  	if (!fb_info.io_virt) {
  		release_region(fb_info.io, trident_iosize);
  		debug("ioremap failed\n");
  		return -1;
  	}
  
  	enable_mmio();
  
  	fb_info.memsize = get_memsize();
  	if (!request_mem_region(fb_info.fbmem, fb_info.memsize, "tridentfb")) {
  		debug("request_mem_region failed!\n");
  		return -1;
  	}
  
  	fb_info.fbmem_virt = (unsigned long)ioremap_nocache(fb_info.fbmem, fb_info.memsize);
  
  	if (!fb_info.fbmem_virt) {
  		release_mem_region(fb_info.fbmem, fb_info.memsize);
  		debug("ioremap failed\n");
  		return -1;
  	}
  
  	output("%s board found\n", dev->name);
  	debug("Trident board found : mem = %X,io = %X, mem_v = %X, io_v = %X\n",
  		fb_info.fbmem, fb_info.io, fb_info.fbmem_virt, fb_info.io_virt);
  
  	fb_info.gen.parsize = sizeof (struct tridentfb_par);
  	fb_info.gen.fbhw = &trident_hwswitch;
  
  	strcpy(fb_info.gen.info.modename, tridentfb_name);
  	displaytype = get_displaytype();
  
  	if(flatpanel)
  		fb_info.nativex = get_nativex();
  
  	fb_info.gen.info.changevar = NULL;
  	fb_info.gen.info.node = NODEV;
  	fb_info.gen.info.fbops = &tridentfb_ops;
  	fb_info.gen.info.disp = &disp;
  
  	fb_info.gen.info.switch_con = &fbgen_switch;
  	fb_info.gen.info.updatevar = &fbgen_update_var;
  	fb_info.gen.info.blank = &fbgen_blank;
  
  	fb_info.gen.info.flags = FBINFO_FLAG_DEFAULT;
  	fb_info.gen.info.fontname[0] = '\0';
  	fb_info.gen.info.pseudo_palette = pseudo_pal;
  
  	/* This should give a reasonable default video mode */
  	fb_find_mode(&default_var,&fb_info.gen.info,mode,NULL,0,NULL,bpp);
  
  	if (defaultaccel && acc)
  		default_var.accel_flags |= FB_ACCELF_TEXT;
  	else
  		default_var.accel_flags &= ~FB_ACCELF_TEXT;
  
  	trident_decode_var(&default_var, &fb_info.currentmode, &fb_info.gen);
  	fbgen_get_var(&disp.var, -1, &fb_info.gen.info);
  	default_var.activate |= FB_ACTIVATE_NOW;
  	fbgen_set_disp(-1, &fb_info.gen);
  
  	if (register_framebuffer(&fb_info.gen.info) < 0) {
  		printk("Could not register Trident framebuffer\n");
  		return -EINVAL;
  	}
  
  	output("fb%d: %s frame buffer device %dx%d-%dbpp\n",
  	   GET_FB_IDX(fb_info.gen.info.node), fb_info.gen.info.modename,default_var.xres,
  	   default_var.yres,default_var.bits_per_pixel);
  	return 0;
  }
  
  static void __devexit trident_pci_remove(struct pci_dev * dev)
  {
  	unregister_framebuffer(&fb_info.gen.info);
  	iounmap((void *)fb_info.io_virt);
  	iounmap((void *)fb_info.fbmem_virt);
  	release_mem_region(fb_info.fbmem, fb_info.memsize);
  	release_region(fb_info.io, trident_iosize);
  }
  
  /* List of boards that we are trying to support */
  static struct pci_device_id trident_devices[] __devinitdata = {
  	{PCI_VENDOR_ID_TRIDENT,	BLADE3D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEi7, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEi7D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEi1, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEi1D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEAi1, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEAi1D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEE4, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	TGUI9660, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	IMAGE975, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	IMAGE985, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBER9320, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBER9388, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBER9520, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBER9525DVD, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBER9397, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBER9397DVD, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEXPAi1, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEXPm8, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{PCI_VENDOR_ID_TRIDENT,	CYBERBLADEXPm16, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
  	{0,}
  };	
  	
  MODULE_DEVICE_TABLE(pci,trident_devices); 
  
  static struct pci_driver tridentfb_pci_driver = {
  	name:"tridentfb",
  	id_table:trident_devices,
  	probe:trident_pci_probe,
  	remove:__devexit_p(trident_pci_remove),
  };
  
  int __init tridentfb_init(void)
  {
  	output("Trident framebuffer %s initializing\n", VERSION);
  	return pci_module_init(&tridentfb_pci_driver);
  }
  
  void __exit tridentfb_exit(void)
  {
  	pci_unregister_driver(&tridentfb_pci_driver);
  }
  
  
  /*
   * Parse user specified options (`video=trident:')
   * example:
   * 	video=trident:800x600,bpp=16,noaccel
   */
  int tridentfb_setup(char *options)
  {
  	char * opt;
  	if (!options || !*options)
  		return 0;
  	while((opt = strsep(&options,",")) != NULL ) {
  		if (!*opt) continue;
  		if (!strncmp(opt,"noaccel",7))
  			noaccel = 1;
  		else if (!strncmp(opt,"fp",2))
  			displaytype = DISPLAY_FP;
  		else if (!strncmp(opt,"crt",3))
  			displaytype = DISPLAY_CRT;
  		else if (!strncmp(opt,"bpp=",4))
  			bpp = simple_strtoul(opt+4,NULL,0);
  		else if (!strncmp(opt,"center",6))
  			center = 1;
  		else if (!strncmp(opt,"stretch",7))
  			stretch = 1;
  		else if (!strncmp(opt,"memsize=",8))
  			memsize = simple_strtoul(opt+8,NULL,0);
  		else if (!strncmp(opt,"memdiff=",8))
  			memdiff = simple_strtoul(opt+8,NULL,0);
  		else if (!strncmp(opt,"nativex=",8))
  			nativex = simple_strtoul(opt+8,NULL,0);
  		else
  			mode = opt;
  	}
  	return 0;
  }
  
  static struct fb_ops tridentfb_ops = {
  	fb_get_fix:fbgen_get_fix,
  	fb_get_var:fbgen_get_var,
  	fb_set_var:fbgen_set_var,
  	fb_get_cmap:fbgen_get_cmap,
  	fb_set_cmap:fbgen_set_cmap,
  	fb_pan_display:fbgen_pan_display,
  };
  
  #ifdef MODULE
  module_init(tridentfb_init);
  #endif
  module_exit(tridentfb_exit);
  
  MODULE_AUTHOR("Jani Monoses <jani@iv.ro>");
  MODULE_DESCRIPTION("Framebuffer driver for Trident cards");
  MODULE_LICENSE("GPL");
  
  