patch-2.1.73 linux/arch/m68k/amiga/retz3fb.c

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diff -u --recursive --new-file v2.1.72/linux/arch/m68k/amiga/retz3fb.c linux/arch/m68k/amiga/retz3fb.c
@@ -1,1754 +0,0 @@
-/*
- * Linux/arch/m68k/amiga/retz3fb.c -- Low level implementation of the
- *                                    RetinaZ3 frame buffer device
- *
- *    Copyright (C) 1997 Jes Sorensen
- *
- * This file is based on the CyberVision64 frame buffer device and
- * the generic Cirrus Logic driver.
- *
- * cyberfb.c: Copyright (C) 1996 Martin Apel,
- *                               Geert Uytterhoeven
- * clgen.c:   Copyright (C) 1996 Frank Neumann
- *
- * History:
- *   - 22 Jan 97: Initial work
- *   - 14 Feb 97: Screen initialization works somewhat, still only
- *                8-bit packed pixel is supported.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/tty.h>
-#include <linux/malloc.h>
-#include <linux/delay.h>
-#include <linux/fb.h>
-#include <linux/zorro.h>
-#include <linux/init.h>
-
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/irq.h>
-#include <asm/pgtable.h>
-
-#include "retz3fb.h"
-
-/* #define DEBUG if(1) */
-#define DEBUG if(0)
-
-/*
- * Reserve space for one pattern line.
- *
- * For the time being we only support 4MB boards!
- */
-
-#define PAT_MEM_SIZE 16*3
-#define PAT_MEM_OFF  (4*1024*1024 - PAT_MEM_SIZE)
-
-#define arraysize(x)    (sizeof(x)/sizeof(*(x)))
-
-struct retz3_fb_par {
-	int xres;
-	int yres;
-	int xres_vir;
-	int yres_vir;
-	int xoffset;
-	int yoffset;
-	int bpp;
-
-	struct fb_bitfield red;
-	struct fb_bitfield green;
-	struct fb_bitfield blue;
-	struct fb_bitfield transp;
-
-	int pixclock;
-	int left_margin;	/* time from sync to picture	*/
-	int right_margin;	/* time from picture to sync	*/
-	int upper_margin;	/* time from sync to picture	*/
-	int lower_margin;
-	int hsync_len;	/* length of horizontal sync	*/
-	int vsync_len;	/* length of vertical sync	*/
-	int vmode;
-};
-
-struct display_data {
-	long h_total;		/* Horizontal Total */
-	long h_sstart;		/* Horizontal Sync Start */
-	long h_sstop;		/* Horizontal Sync Stop */
-	long h_bstart;		/* Horizontal Blank Start */
-	long h_bstop;		/* Horizontal Blank Stop */
-	long h_dispend;		/* Horizontal Display End */
-	long v_total;		/* Vertical Total */
-	long v_sstart;		/* Vertical Sync Start */
-	long v_sstop;		/* Vertical Sync Stop */
-	long v_bstart;		/* Vertical Blank Start */
-	long v_bstop;		/* Vertical Blank Stop */
-	long v_dispend;		/* Horizontal Display End */
-};
-
-static struct retz3_fb_par current_par;
-
-static int current_par_valid = 0;
-static int currcon = 0;
-
-static struct display disp[MAX_NR_CONSOLES];
-static struct fb_info fb_info;
-
-static int node;        /* node of the /dev/fb?current file */
-
-
-/*
- *    Switch for Chipset Independency
- */
-
-static struct fb_hwswitch {
-
-   /* Initialisation */
-
-   int (*init)(void);
-
-   /* Display Control */
-
-   int (*encode_fix)(struct fb_fix_screeninfo *fix, struct retz3_fb_par *par);
-   int (*decode_var)(struct fb_var_screeninfo *var, struct retz3_fb_par *par);
-   int (*encode_var)(struct fb_var_screeninfo *var, struct retz3_fb_par *par);
-   int (*getcolreg)(unsigned int regno, unsigned int *red, unsigned
-		    int *green, unsigned int *blue, unsigned int *transp);
-   int (*setcolreg)(unsigned int regno, unsigned int red, unsigned int
-		    green, unsigned int blue, unsigned int transp);
-   void (*blank)(int blank);
-} *fbhw;
-
-
-/*
- *    Frame Buffer Name
- */
-
-static char retz3_fb_name[16] = "RetinaZ3";
-
-
-static int z3_key = 0;
-static unsigned char retz3_color_table [256][4];
-static unsigned long z3_mem;
-static unsigned long z3_fbmem;
-static unsigned long z3_size;
-static volatile unsigned char *z3_regs;
-
-static long *memstart;
-
-
-/*
- *    Predefined Video Mode Names
- */
-
-static char *retz3_fb_modenames[] = {
-
-	/*
-	 *    Autodetect (Default) Video Mode
-	 */
-
-	"default",
-
-	/*
-	 *    Predefined Video Modes
-	 */
-
-	"640x480",		/* RetinaZ3 8 bpp */
-	"800x600",		/* RetinaZ3 8 bpp */
-	"1024x768i",
-	"640x480-16",		/* RetinaZ3 16 bpp */
-	"640x480-24",		/* RetinaZ3 24 bpp */
-	
-	/*
-	 *    Dummy Video Modes
-	 */
-
-	"dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
-	"dummy", "dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
-	"dummy", "dummy", "dummy", "dummy", "dummy", "dummy",
-
-	/*
-	 *    User Defined Video Modes
-	 *
-	 *    This doesn't work yet!!
-	 */
-
-	"user0", "user1", "user2", "user3",
-	"user4", "user5", "user6", "user7"
-};
-
-/*
- * A small info on how to convert XFree86 timing values into fb
- * timings - by Frank Neumann:
- *
-An XFree86 mode line consists of the following fields:
- "800x600"     50      800  856  976 1040    600  637  643  666
- < name >     DCF       HR  SH1  SH2  HFL     VR  SV1  SV2  VFL
-
-The fields in the fb_var_screeninfo structure are:
-        unsigned long pixclock;         * pixel clock in ps (pico seconds) *
-        unsigned long left_margin;      * time from sync to picture    *
-        unsigned long right_margin;     * time from picture to sync    *
-        unsigned long upper_margin;     * time from sync to picture    *
-        unsigned long lower_margin;
-        unsigned long hsync_len;        * length of horizontal sync    *
-        unsigned long vsync_len;        * length of vertical sync      *
-
-1) Pixelclock:
-   xfree: in MHz
-   fb: In Picoseconds (ps)
-
-   pixclock = 1000000 / DCF
-
-2) horizontal timings:
-   left_margin = HFL - SH2
-   right_margin = SH1 - HR
-   hsync_len = SH2 - SH1
-
-3) vertical timings:
-   upper_margin = VFL - SV2
-   lower_margin = SV1 - VR
-   vsync_len = SV2 - SV1
-
-Good examples for VESA timings can be found in the XFree86 source tree,
-under "programs/Xserver/hw/xfree86/doc/modeDB.txt".
-*/
-
-/*
- *    Predefined Video Mode Definitions
- */
-
-static struct fb_var_screeninfo retz3_fb_predefined[] = {
-
-   /*
-    *    Autodetect (Default) Video Mode
-    */
-
-   { 0, },
-
-   /*
-    *    Predefined Video Modes
-    */
-
-   /*
-    * NB: it is very important to adjust the pixel-clock to the color-depth.
-    */
-
-   {
-	   640, 480, 640, 480, 0, 0, 8, 0,
-	   {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
-	   0, 0, -1, -1, FB_ACCEL_RETINAZ3, 38461, 28, 32, 12, 10, 96, 2,
-	   FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
-   },
-   /*
-    ModeLine "800x600" 36 800 824 896 1024 600 601 603 625
-             < name > DCF HR  SH1 SH2  HFL VR  SV1 SV2 VFL
-    */
-   {
-	   /* 800 x 600, 8 bpp */
-	   800, 600, 800, 600, 0, 0, 8, 0,
-	   {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
-	   0, 0, -1, -1, FB_ACCEL_RETINAZ3, 27778, 64, 24, 22, 1, 120, 2,
-	   FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
-   },
-   /*
-    ModeLine "1024x768i" 45 1024 1064 1224 1264 768 777 785 817 interlace
-              < name >   DCF HR  SH1  SH2  HFL  VR  SV1 SV2 VFL
-    */
-   {
-	   /* 1024 x 768, 8 bpp, interlaced */
-	   1024, 768, 1024, 768, 0, 0, 8, 0,
-	   {0, 8, 0}, {0, 8, 0}, {0, 8, 0}, {0, 0, 0},
-	   0, 0, -1, -1, FB_ACCEL_RETINAZ3, 22222, 40, 40, 32, 9, 160, 8,
-	   FB_SYNC_COMP_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT, FB_VMODE_INTERLACED
-   },
-   {
-	   640, 480, 640, 480, 0, 0, 16, 0,
-	   {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0},
-	   0, 0, -1, -1, FB_ACCEL_RETINAZ3, 38461/2, 28, 32, 12, 10, 96, 2,
-	   FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
-   },
-   {
-	   640, 480, 640, 480, 0, 0, 24, 0,
-	   {8, 8, 8}, {8, 8, 8}, {8, 8, 8}, {0, 0, 0}, 
-	   0, 0, -1, -1, FB_ACCEL_RETINAZ3, 38461/3, 28, 32, 12, 10, 96, 2,
-	   FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
-   },
-
-   /*
-    *    Dummy Video Modes
-    */
-
-   { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, },
-   { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, },
-   { 0, }, { 0, },
-
-   /*
-    *    User Defined Video Modes
-    */
-
-   { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }, { 0, }
-};
-
-
-#define NUM_TOTAL_MODES    arraysize(retz3_fb_predefined)
-#define NUM_PREDEF_MODES   (5)
-
-
-static int z3fb_inverse = 0;
-static int z3fb_mode = 0;
-
-
-/*
- *    Interface used by the world
- */
-
-int retz3_probe(void);
-void retz3_video_setup(char *options, int *ints);
-
-static int retz3_fb_get_fix(struct fb_fix_screeninfo *fix, int con);
-static int retz3_fb_get_var(struct fb_var_screeninfo *var, int con);
-static int retz3_fb_set_var(struct fb_var_screeninfo *var, int con);
-static int retz3_fb_get_cmap(struct fb_cmap *cmap, int kspc, int con);
-static int retz3_fb_set_cmap(struct fb_cmap *cmap, int kspc, int con);
-static int retz3_fb_pan_display(struct fb_var_screeninfo *var, int con);
-static int retz3_fb_ioctl(struct inode *inode, struct file *file,
-			  unsigned int cmd, unsigned long arg, int con);
-
-
-/*
- *    Interface to the low level console driver
- */
-
-struct fb_info *retz3_fb_init(long *mem_start); /* Through amiga_fb_init() */
-static int z3fb_switch(int con);
-static int z3fb_updatevar(int con);
-static void z3fb_blank(int blank);
-static int z3fb_setcmap(struct fb_cmap *cmap, int con);
-
-
-/*
- *    Accelerated Functions used by the low level console driver
- */
-
-void retz3_bitblt(struct fb_var_screeninfo *scr,
-		  unsigned short curx, unsigned short cury, unsigned
-		  short destx, unsigned short desty, unsigned short
-		  width, unsigned short height, unsigned short cmd,
-		  unsigned short mask);
-void retz3_fill(unsigned short x, unsigned short y, unsigned short
-		width, unsigned short height, unsigned short mode,
-		unsigned short color);
-
-/*
- *   Hardware Specific Routines
- */
-
-static int retz3_init(void);
-static int retz3_encode_fix(struct fb_fix_screeninfo *fix,
-                          struct retz3_fb_par *par);
-static int retz3_decode_var(struct fb_var_screeninfo *var,
-                          struct retz3_fb_par *par);
-static int retz3_encode_var(struct fb_var_screeninfo *var,
-                          struct retz3_fb_par *par);
-static int retz3_getcolreg(unsigned int regno, unsigned int *red,
-			   unsigned int *green, unsigned int *blue,
-			   unsigned int *transp);
-static int retz3_setcolreg(unsigned int regno, unsigned int red,
-			   unsigned int green, unsigned int blue,
-			   unsigned int transp);
-static void retz3_blank(int blank);
-
-
-/*
- *    Internal routines
- */
-
-static void retz3_fb_get_par(struct retz3_fb_par *par);
-static void retz3_fb_set_par(struct retz3_fb_par *par);
-static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive);
-static struct fb_cmap *get_default_colormap(int bpp);
-static int do_fb_get_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
-                          int kspc);
-static int do_fb_set_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
-                          int kspc);
-static void do_install_cmap(int con);
-static void memcpy_fs(int fsfromto, void *to, void *from, int len);
-static void copy_cmap(struct fb_cmap *from, struct fb_cmap *to, int fsfromto);
-static int alloc_cmap(struct fb_cmap *cmap, int len, int transp);
-static void retz3_fb_set_disp(int con);
-static int get_video_mode(const char *name);
-
-
-/* -------------------- Hardware specific routines -------------------------- */
-
-static unsigned short find_fq(unsigned int freq)
-{
-	unsigned long f;
-	long tmp;
-	long prev = 0x7fffffff;
-	long n2, n1 = 3;
-	unsigned long m;
-	unsigned short res = 0;
-
-	if (freq <= 31250000)
-		n2 = 3;
-	else if (freq <= 62500000)
-		n2 = 2;
-	else if (freq <= 125000000)
-		n2 = 1;
-	else if (freq <= 250000000)
-		n2 = 0;
-	else
-		return(0);
-
-
-	do {
-		f = freq >> (10 - n2);
-
-		m = (f * n1) / (14318180/1024);
-
-		if (m > 129)
-			break;
-
-		tmp =  (((m * 14318180) >> n2) / n1) - freq;
-		if (tmp < 0)
-			tmp = -tmp;
-
-		if (tmp < prev) {
-			prev = tmp;
-			res = (((n2 << 5) | (n1-2)) << 8) | (m-2);
-		}
-
-	} while ( (++n1) <= 21);
-
-	return res;
-}
-
-
-static int retz3_set_video(struct fb_var_screeninfo *var,
-			   struct retz3_fb_par *par)
-{
-	float freq_f;
-	long freq;
-
-	int xres, hfront, hsync, hback;
-	int yres, vfront, vsync, vback;
-	unsigned char tmp;
-	unsigned short best_freq;
-	struct display_data data;
-
-	short clocksel = 0; /* Apparantly this is always zero */
-
-	int bpp = var->bits_per_pixel;
-
-	/*
-	 * XXX
-	 */
-	if (bpp == 24)
-		return 0;
-
-	if ((bpp != 8) && (bpp != 16) && (bpp != 24))
-		return -EFAULT;
-
-	par->xoffset = 0;
-	par->yoffset = 0;
-
-	xres   = var->xres * bpp / 4;
-	hfront = var->right_margin * bpp / 4;
-	hsync  = var->hsync_len * bpp / 4;
-	hback  = var->left_margin * bpp / 4;
-
-	if (var->vmode & FB_VMODE_DOUBLE)
-	{
-		yres = var->yres * 2;
-		vfront = var->lower_margin * 2;
-		vsync  = var->vsync_len * 2;
-		vback  = var->upper_margin * 2;
-	}
-	else if (var->vmode & FB_VMODE_INTERLACED)
-	{
-		yres   = (var->yres + 1) / 2;
-		vfront = (var->lower_margin + 1) / 2;
-		vsync  = (var->vsync_len + 1) / 2;
-		vback  = (var->upper_margin + 1) / 2;
-	}
-	else
-	{
-		yres   = var->yres; /* -1 ? */
-		vfront = var->lower_margin;
-		vsync  = var->vsync_len;
-		vback  = var->upper_margin;
-	}
-
-	data.h_total	= (hback / 8) + (xres / 8) 
-			+ (hfront / 8) + (hsync / 8) - 1 /* + 1 */;
-	data.h_dispend	= ((xres + bpp - 1)/ 8) - 1;
-	data.h_bstart	= xres / 8 /* + 1 */;
-
-	data.h_bstop	= data.h_total+1 + 2 + 1;
-	data.h_sstart	= (xres / 8) + (hfront / 8) + 1;
-	data.h_sstop	= (xres / 8) + (hfront / 8) + (hsync / 8) + 1;
-
-	data.v_total	= yres + vfront + vsync + vback - 1;
-
-	data.v_dispend	= yres - 1;
-	data.v_bstart	= yres;
-
-	data.v_bstop	= data.v_total;
-	data.v_sstart	= yres + vfront - 1 - 2;
-	data.v_sstop	= yres + vfront + vsync - 1;
-
-#if 0 /* testing */
-
-	printk("HBS: %i\n", data.h_bstart);
-	printk("HSS: %i\n", data.h_sstart);
-	printk("HSE: %i\n", data.h_sstop);
-	printk("HBE: %i\n", data.h_bstop);
-	printk("HT: %i\n", data.h_total);
-
-	printk("hsync: %i\n", hsync);
-	printk("hfront: %i\n", hfront);
-	printk("hback: %i\n", hback);
-
-	printk("VBS: %i\n", data.v_bstart);
-	printk("VSS: %i\n", data.v_sstart);
-	printk("VSE: %i\n", data.v_sstop);
-	printk("VBE: %i\n", data.v_bstop);
-	printk("VT: %i\n", data.v_total);
-
-	printk("vsync: %i\n", vsync);
-	printk("vfront: %i\n", vfront);
-	printk("vback: %i\n", vback);
-#endif
-
-	if (data.v_total >= 1024)
-		printk("MAYDAY: v_total >= 1024; bailing out!\n");
-
-	reg_w(GREG_MISC_OUTPUT_W, 0xe3 | ((clocksel & 3) * 0x04));
-	reg_w(GREG_FEATURE_CONTROL_W, 0x00);
-
-	seq_w(SEQ_RESET, 0x00);
-	seq_w(SEQ_RESET, 0x03);	/* reset sequencer logic */
-
-	/*
-	 * CLOCKING_MODE bits:
-	 * 2: This one is only set for certain text-modes, wonder if
-	 *    it may be for EGA-lines? (it was referred to as CLKDIV2)
-	 * (The CL drivers sets it to 0x21 with the comment:
-	 *  FullBandwidth (video off) and 8/9 dot clock)
-	 */
-	seq_w(SEQ_CLOCKING_MODE, 0x01 | 0x00 /* 0x08 */);
-
-	seq_w(SEQ_MAP_MASK, 0x0f);        /* enable writing to plane 0-3 */
-	seq_w(SEQ_CHAR_MAP_SELECT, 0x00); /* doesn't matter in gfx-mode */
-	seq_w(SEQ_MEMORY_MODE, 0x06); /* CL driver says 0x0e for 256 col mode*/
-	seq_w(SEQ_RESET, 0x01);
-	seq_w(SEQ_RESET, 0x03);
-
-	seq_w(SEQ_EXTENDED_ENABLE, 0x05);
-
-	seq_w(SEQ_CURSOR_CONTROL, 0x00);	/* disable cursor */
-	seq_w(SEQ_PRIM_HOST_OFF_HI, 0x00);
-	seq_w(SEQ_PRIM_HOST_OFF_HI, 0x00);
-	seq_w(SEQ_LINEAR_0, 0x4a);
-	seq_w(SEQ_LINEAR_1, 0x00);
-
-	seq_w(SEQ_SEC_HOST_OFF_HI, 0x00);
-	seq_w(SEQ_SEC_HOST_OFF_LO, 0x00);
-	seq_w(SEQ_EXTENDED_MEM_ENA, 0x3 | 0x4 | 0x10 | 0x40);
-
-	/*
-	 * The lower 4 bits (0-3) are used to set the font-width for
-	 * text-mode - DON'T try to set this for gfx-mode.
-	 */
-	seq_w(SEQ_EXT_CLOCK_MODE, 0x10);
-	seq_w(SEQ_EXT_VIDEO_ADDR, 0x03);
-
-	/*
-	 * Extended Pixel Control:
-	 * bit 0:   text-mode=0, gfx-mode=1 (Graphics Byte ?)
-	 * bit 1: (Packed/Nibble Pixel Format ?)
-	 * bit 4-5: depth, 0=1-8bpp, 1=9-16bpp, 2=17-24bpp
-	 */
-	seq_w(SEQ_EXT_PIXEL_CNTL, 0x01 | (((bpp / 8) - 1) << 4));
-
-	seq_w(SEQ_BUS_WIDTH_FEEDB, 0x04);
-	seq_w(SEQ_COLOR_EXP_WFG, 0x01);
-	seq_w(SEQ_COLOR_EXP_WBG, 0x00);
-	seq_w(SEQ_EXT_RW_CONTROL, 0x00);
-	seq_w(SEQ_MISC_FEATURE_SEL, (0x51 | (clocksel & 8)));
-	seq_w(SEQ_COLOR_KEY_CNTL, 0x40);
-	seq_w(SEQ_COLOR_KEY_MATCH0, 0x00);
-	seq_w(SEQ_COLOR_KEY_MATCH1, 0x00);
-	seq_w(SEQ_COLOR_KEY_MATCH2, 0x00);
-	seq_w(SEQ_CRC_CONTROL, 0x00);
-	seq_w(SEQ_PERF_SELECT, 0x10);
-	seq_w(SEQ_ACM_APERTURE_1, 0x00);
-	seq_w(SEQ_ACM_APERTURE_2, 0x30);
-	seq_w(SEQ_ACM_APERTURE_3, 0x00);
-	seq_w(SEQ_MEMORY_MAP_CNTL, 0x03);
-
-
-	/* unlock register CRT0..CRT7 */
-	crt_w(CRT_END_VER_RETR, (data.v_sstop & 0x0f) | 0x20);
-
-	/* Zuerst zu schreibende Werte nur per printk ausgeben */
-	DEBUG printk("CRT_HOR_TOTAL: %ld\n", data.h_total);
-	crt_w(CRT_HOR_TOTAL, data.h_total & 0xff);
-
-	DEBUG printk("CRT_HOR_DISP_ENA_END: %ld\n", data.h_dispend);
-	crt_w(CRT_HOR_DISP_ENA_END, (data.h_dispend) & 0xff);
-
-	DEBUG printk("CRT_START_HOR_BLANK: %ld\n", data.h_bstart);
-	crt_w(CRT_START_HOR_BLANK, data.h_bstart & 0xff);
-
-	DEBUG printk("CRT_END_HOR_BLANK: 128+%ld\n", data.h_bstop % 32);
-	crt_w(CRT_END_HOR_BLANK,  0x80 | (data.h_bstop & 0x1f));
-
-	DEBUG printk("CRT_START_HOR_RETR: %ld\n", data.h_sstart);
-	crt_w(CRT_START_HOR_RETR, data.h_sstart & 0xff);
-
-	tmp = (data.h_sstop & 0x1f);
-	if (data.h_bstop & 0x20)
-		tmp |= 0x80;
-	DEBUG printk("CRT_END_HOR_RETR: %d\n", tmp);
-	crt_w(CRT_END_HOR_RETR, tmp);
-
-	DEBUG printk("CRT_VER_TOTAL: %ld\n", data.v_total & 0xff);
-	crt_w(CRT_VER_TOTAL, (data.v_total & 0xff));
-
-	tmp = 0x10;  /* LineCompare bit #9 */
-	if (data.v_total & 256)
-		tmp |= 0x01;
-	if (data.v_dispend & 256)
-		tmp |= 0x02;
-	if (data.v_sstart & 256)
-		tmp |= 0x04;
-	if (data.v_bstart & 256)
-		tmp |= 0x08;
-	if (data.v_total & 512)
-		tmp |= 0x20;
-	if (data.v_dispend & 512)
-		tmp |= 0x40;
-	if (data.v_sstart & 512)
-		tmp |= 0x80;
-	DEBUG printk("CRT_OVERFLOW: %d\n", tmp);
-	crt_w(CRT_OVERFLOW, tmp);
-
-	crt_w(CRT_PRESET_ROW_SCAN, 0x00); /* not CL !!! */
-
-	tmp = 0x40; /* LineCompare bit #8 */
-	if (data.v_bstart & 512)
-		tmp |= 0x20;
-	if (var->vmode & FB_VMODE_DOUBLE)
-		tmp |= 0x80;
- 	DEBUG printk("CRT_MAX_SCAN_LINE: %d\n", tmp);
-	crt_w(CRT_MAX_SCAN_LINE, tmp);
-
-	crt_w(CRT_CURSOR_START, 0x00);
-	crt_w(CRT_CURSOR_END, 8 & 0x1f); /* font height */
-
-	crt_w(CRT_START_ADDR_HIGH, 0x00);
-	crt_w(CRT_START_ADDR_LOW, 0x00);
-
-	crt_w(CRT_CURSOR_LOC_HIGH, 0x00);
-	crt_w(CRT_CURSOR_LOC_LOW, 0x00);
-
- 	DEBUG printk("CRT_START_VER_RETR: %ld\n", data.v_sstart & 0xff);
-	crt_w(CRT_START_VER_RETR, (data.v_sstart & 0xff));
-
-#if 1
-	/* 5 refresh cycles per scanline */
-	DEBUG printk("CRT_END_VER_RETR: 64+32+%ld\n", data.v_sstop % 16);
-	crt_w(CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 0x40 | 0x20));
-#else
-	DEBUG printk("CRT_END_VER_RETR: 128+32+%ld\n", data.v_sstop % 16);
-	crt_w(CRT_END_VER_RETR, ((data.v_sstop & 0x0f) | 128 | 32));
-#endif
-	DEBUG printk("CRT_VER_DISP_ENA_END: %ld\n", data.v_dispend & 0xff);
-	crt_w(CRT_VER_DISP_ENA_END, (data.v_dispend & 0xff));
-
-	DEBUG printk("CRT_START_VER_BLANK: %ld\n", data.v_bstart & 0xff);
-	crt_w(CRT_START_VER_BLANK, (data.v_bstart & 0xff));
-
-	DEBUG printk("CRT_END_VER_BLANK: %ld\n", data.v_bstop & 0xff);
-	crt_w(CRT_END_VER_BLANK, (data.v_bstop & 0xff));
-
-	DEBUG printk("CRT_MODE_CONTROL: 0xe3\n");
-	crt_w(CRT_MODE_CONTROL, 0xe3);
-
-	DEBUG printk("CRT_LINE_COMPARE: 0xff\n");
-	crt_w(CRT_LINE_COMPARE, 0xff);
-
-	tmp = (var->xres_virtual / 8) * (bpp / 8);
-	crt_w(CRT_OFFSET, tmp);
-
-	crt_w(CRT_UNDERLINE_LOC, 0x07); /* probably font-height - 1 */
-
-	tmp = 0x20;			/* Enable extended end bits */
-	if (data.h_total & 0x100)
-		tmp |= 0x01;
-	if ((data.h_dispend) & 0x100)
-		tmp |= 0x02;
-	if (data.h_bstart & 0x100)
-		tmp |= 0x04;
-	if (data.h_sstart & 0x100)
-		tmp |= 0x08;
-	if (var->vmode & FB_VMODE_INTERLACED)
-		tmp |= 0x10;
- 	DEBUG printk("CRT_EXT_HOR_TIMING1: %d\n", tmp);
-	crt_w(CRT_EXT_HOR_TIMING1, tmp);
-
-	tmp = 0x00;
-	if (((var->xres_virtual / 8) * (bpp / 8)) & 0x100)
-		tmp |= 0x10;
-	crt_w(CRT_EXT_START_ADDR, tmp);
-
-	tmp = 0x00;
-	if (data.h_total & 0x200)
-		tmp |= 0x01;
-	if ((data.h_dispend) & 0x200)
-		tmp |= 0x02;
-	if (data.h_bstart & 0x200)
-		tmp |= 0x04;
-	if (data.h_sstart & 0x200)
-		tmp |= 0x08;
-	tmp |= ((data.h_bstop & 0xc0) >> 2);
-	tmp |= ((data.h_sstop & 0x60) << 1);
-	crt_w(CRT_EXT_HOR_TIMING2, tmp);
- 	DEBUG printk("CRT_EXT_HOR_TIMING2: %d\n", tmp);
-
-	tmp = 0x10;			/* Line compare bit 10 */
-	if (data.v_total & 0x400)
-		tmp |= 0x01;
-	if ((data.v_dispend) & 0x400)
-		tmp |= 0x02;
-	if (data.v_bstart & 0x400)
-		tmp |= 0x04;
-	if (data.v_sstart & 0x400)
-		tmp |= 0x08;
-	tmp |= ((data.v_bstop & 0x300) >> 3);
-	if (data.v_sstop & 0x10)
-		tmp |= 0x80;
-	crt_w(CRT_EXT_VER_TIMING, tmp);
- 	DEBUG printk("CRT_EXT_VER_TIMING: %d\n", tmp);
-
-	crt_w(CRT_MONITOR_POWER, 0x00);
-
-	/*
-	 * Convert from ps to Hz.
-	 */
-	freq_f = (1.0/(float)var->pixclock) * 1000000000;
-	freq = ((long)freq_f) * 1000;
-
-	best_freq = find_fq(freq);
-	pll_w(0x02, best_freq);
-	best_freq = find_fq(61000000);
-	pll_w(0x0a, best_freq);
-	pll_w(0x0e, 0x22);
-
-	gfx_w(GFX_SET_RESET, 0x00);
-	gfx_w(GFX_ENABLE_SET_RESET, 0x00);
-	gfx_w(GFX_COLOR_COMPARE, 0x00);
-	gfx_w(GFX_DATA_ROTATE, 0x00);
-	gfx_w(GFX_READ_MAP_SELECT, 0x00);
-	gfx_w(GFX_GRAPHICS_MODE, 0x00);
-	gfx_w(GFX_MISC, 0x05);
-	gfx_w(GFX_COLOR_XCARE, 0x0f);
-	gfx_w(GFX_BITMASK, 0xff);
-
-	reg_r(ACT_ADDRESS_RESET);
-	attr_w(ACT_PALETTE0 , 0x00);
-	attr_w(ACT_PALETTE1 , 0x01);
-	attr_w(ACT_PALETTE2 , 0x02);
-	attr_w(ACT_PALETTE3 , 0x03);
-	attr_w(ACT_PALETTE4 , 0x04);
-	attr_w(ACT_PALETTE5 , 0x05);
-	attr_w(ACT_PALETTE6 , 0x06);
-	attr_w(ACT_PALETTE7 , 0x07);
-	attr_w(ACT_PALETTE8 , 0x08);
-	attr_w(ACT_PALETTE9 , 0x09);
-	attr_w(ACT_PALETTE10, 0x0a);
-	attr_w(ACT_PALETTE11, 0x0b);
-	attr_w(ACT_PALETTE12, 0x0c);
-	attr_w(ACT_PALETTE13, 0x0d);
-	attr_w(ACT_PALETTE14, 0x0e);
-	attr_w(ACT_PALETTE15, 0x0f);
-	reg_r(ACT_ADDRESS_RESET);
-
-	attr_w(ACT_ATTR_MODE_CNTL, 0x09); /* 0x01 for CL */
-
-	attr_w(ACT_OVERSCAN_COLOR, 0x00);
-	attr_w(ACT_COLOR_PLANE_ENA, 0x0f);
-	attr_w(ACT_HOR_PEL_PANNING, 0x00);
-	attr_w(ACT_COLOR_SELECT, 0x00);
-
-	reg_r(ACT_ADDRESS_RESET);
-	reg_w(ACT_DATA, 0x20);
-
-	reg_w(VDAC_MASK, 0xff);
-
-	/*
-	 * Extended palette adressing ???
-	 */
-	switch (bpp){
-	case 8:
-		reg_w(0x83c6, 0x00); 
-		break;
-	case 16:
-		reg_w(0x83c6, 0x60);
-		break;
-	case 24:
-		reg_w(0x83c6, 0xe0);
-		break;
-	default:
-		printk("Illegal color-depth: %i\n", bpp);
-	}
-
-	reg_w(VDAC_ADDRESS, 0x00);
-
-	seq_w(SEQ_MAP_MASK, 0x0f );  
-
-	return 0;
-}
-
-/*
- *    Initialization
- *
- *    Set the default video mode for this chipset. If a video mode was
- *    specified on the command line, it will override the default mode.
- */
-
-static int retz3_init(void)
-{
-	int i;
-#if 0
-	volatile unsigned long *CursorBase;
-#endif
-	unsigned long board_addr, board_size;
-	struct ConfigDev *cd;
-
-	cd = zorro_get_board (z3_key);
-	zorro_config_board (z3_key, 0);
-	board_addr = (unsigned long)cd->cd_BoardAddr;
-	board_size = (unsigned long)cd->cd_BoardSize;
-
-	for (i = 0; i < 256; i++){
-		for (i = 0; i < 256; i++){
-			retz3_color_table [i][0] = i;
-			retz3_color_table [i][1] = i;
-			retz3_color_table [i][2] = i;
-			retz3_color_table [i][3] = 0;
-		}
-	}
-
-	*memstart = (*memstart + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
-
-	z3_mem = kernel_map (board_addr, board_size,
-			     KERNELMAP_NOCACHE_SER, memstart);
-
-	z3_regs = (char*) z3_mem;
-	z3_fbmem = z3_mem + VIDEO_MEM_OFFSET;
-
-	/* Get memory size - for now we asume its a 4MB board */
-
-	z3_size = 0x00400000; /* 4 MB */
-
-	memset ((char*)z3_fbmem, 0, z3_size);
-
-	/* Disable hardware cursor */
-
-	seq_w(SEQ_CURSOR_Y_INDEX, 0x00);
-
-
-#if 0
-	/* Initialize hardware cursor */
-	CursorBase = (unsigned long *)((char *)(z3_mem) + z3_size - 0x400);
-	for (i=0; i < 8; i++){
-		*(CursorBase  +(i*4)) = 0xffffff00;
-		*(CursorBase+1+(i*4)) = 0xffff0000;
-		*(CursorBase+2+(i*4)) = 0xffff0000;
-		*(CursorBase+3+(i*4)) = 0xffff0000;
-	}
-	for (i=8; i < 64; i++){
-		*(CursorBase  +(i*4)) = 0xffff0000;
-		*(CursorBase+1+(i*4)) = 0xffff0000;
-		*(CursorBase+2+(i*4)) = 0xffff0000;
-		*(CursorBase+3+(i*4)) = 0xffff0000;
-	}
-#endif
-
-	retz3_setcolreg (255, 56, 100, 160, 0);
-	retz3_setcolreg (254, 0, 0, 0, 0);
-
-	return 0;
-}
-
-
-/*
- *    This function should fill in the `fix' structure based on the
- *    values in the `par' structure.
- */
-
-static int retz3_encode_fix(struct fb_fix_screeninfo *fix,
-                          struct retz3_fb_par *par)
-{
-	int i;
-
-	strcpy(fix->id, retz3_fb_name);
-	fix->smem_start = z3_fbmem;
-	fix->smem_len = z3_size;
-
-	fix->type = FB_TYPE_PACKED_PIXELS;
-	fix->type_aux = 0;
-	if (par->bpp == 8)
-		fix->visual = FB_VISUAL_PSEUDOCOLOR;
-	else
-		fix->visual = FB_VISUAL_DIRECTCOLOR;
-
-	fix->xpanstep = 0;
-	fix->ypanstep = 0;
-	fix->ywrapstep = 0;
-	fix->line_length = 0;
-
-	for (i = 0; i < arraysize(fix->reserved); i++)
-		fix->reserved[i] = 0;
-
-	return 0;
-}
-
-
-/*
- *    Get the video params out of `var'. If a value doesn't fit, round
- *    it up, if it's too big, return -EINVAL.
- */
-
-static int retz3_decode_var(struct fb_var_screeninfo *var,
-			    struct retz3_fb_par *par)
-{
-	par->xres = var->xres;
-	par->yres = var->yres;
-	par->xres_vir = var->xres_virtual;
-	par->yres_vir = var->yres_virtual;
-	par->bpp = var->bits_per_pixel;
-	par->pixclock = var->pixclock;
-	par->vmode = var->vmode;
-
-	par->red = var->red;
-	par->green = var->green;
-	par->blue = var->blue;
-	par->transp = var->transp;
-
-	par->left_margin = var->left_margin;
-	par->right_margin = var->right_margin;
-	par->upper_margin = var->upper_margin;
-	par->lower_margin = var->lower_margin;
-	par->hsync_len = var->hsync_len;
-	par->vsync_len = var->vsync_len;
-
-	return 0;
-}
-
-
-/*
- *    Fill the `var' structure based on the values in `par' and maybe
- *    other values read out of the hardware.
- */
-
-static int retz3_encode_var(struct fb_var_screeninfo *var,
-			    struct retz3_fb_par *par)
-{
-	int i;
-
-	var->xres = par->xres;
-	var->yres = par->yres;
-	var->xres_virtual = par->xres_vir;
-	var->yres_virtual = par->yres_vir;
-	var->xoffset = 0;
-	var->yoffset = 0;
-
-	var->bits_per_pixel = par->bpp;
-	var->grayscale = 0;
-
-	var->red = par->red;
-	var->green = par->green;
-	var->blue = par->blue;
-	var->transp = par->transp;
-
-	var->nonstd = 0;
-	var->activate = 0;
-
-	var->height = -1;
-	var->width = -1;
-
-	var->accel = FB_ACCEL_RETINAZ3;
-
-	var->pixclock = par->pixclock;
-
-	var->sync = 0;				/* ??? */
-	var->left_margin = par->left_margin;
-	var->right_margin = par->right_margin;
-	var->upper_margin = par->upper_margin;
-	var->lower_margin = par->lower_margin;
-	var->hsync_len = par->hsync_len;
-	var->vsync_len = par->vsync_len;
-
-	for (i = 0; i < arraysize(var->reserved); i++)
-		var->reserved[i] = 0;
-
-	var->vmode = par->vmode;
-	return 0;
-}
-
-
-/*
- *    Set a single color register. The values supplied are already
- *    rounded down to the hardware's capabilities (according to the
- *    entries in the var structure). Return != 0 for invalid regno.
- */
-
-static int retz3_setcolreg(unsigned int regno, unsigned int red,
-			   unsigned int green, unsigned int blue,
-			   unsigned int transp)
-{
-	/* We'll get to this */
-
-	if (regno > 255)
-		return 1;
-
-	retz3_color_table [regno][0] = red & 0xff;
-	retz3_color_table [regno][1] = green & 0xff;
-	retz3_color_table [regno][2] = blue & 0xff;
-	retz3_color_table [regno][3] = transp;
-
-	reg_w(VDAC_ADDRESS_W, regno);
-	reg_w(VDAC_DATA, (red & 0xff) >> 2);
-	reg_w(VDAC_DATA, (green & 0xff) >> 2);
-	reg_w(VDAC_DATA, (blue & 0xff) >> 2);
-
-	return 0;
-}
-
-
-/*
- *    Read a single color register and split it into
- *    colors/transparent. Return != 0 for invalid regno.
- */
-
-static int retz3_getcolreg(unsigned int regno, unsigned int *red,
-			   unsigned int *green, unsigned int *blue,
-			   unsigned int *transp)
-{
-	if (regno > 255)
-		return 1;
-	*red    = retz3_color_table [regno][0];
-	*green  = retz3_color_table [regno][1];
-	*blue   = retz3_color_table [regno][2];
-	*transp = retz3_color_table [regno][3];
-	return 0;
-}
-
-
-/*
- *    (Un)Blank the screen
- */
-
-void retz3_blank(int blank)
-{
-	int i;
-
-	if (blank)
-		for (i = 0; i < 256; i++){
-			reg_w(VDAC_ADDRESS_W, i);
-			reg_w(VDAC_DATA, 0);
-			reg_w(VDAC_DATA, 0);
-			reg_w(VDAC_DATA, 0);
-		}
-	else
-		for (i = 0; i < 256; i++){
-			reg_w(VDAC_ADDRESS_W, i);
-			reg_w(VDAC_DATA, retz3_color_table [i][0] >> 2);
-			reg_w(VDAC_DATA, retz3_color_table [i][1] >> 2);
-			reg_w(VDAC_DATA, retz3_color_table [i][2] >> 2);
-		}
-}
-
-
-void retz3_bitblt (struct fb_var_screeninfo *var,
-		   unsigned short srcx, unsigned short srcy, unsigned
-		   short destx, unsigned short desty, unsigned short
-		   width, unsigned short height, unsigned short cmd,
-		   unsigned short mask)
-{
-
-	volatile unsigned long *acm = (unsigned long *) (z3_mem + ACM_OFFSET);
-	unsigned long *pattern = (unsigned long *)(z3_fbmem + PAT_MEM_OFF);
-
-	unsigned short mod;
-	unsigned long tmp;
-	unsigned long pat, src, dst;
-	unsigned char blt_status;
-
-	int i, xres_virtual = var->xres_virtual;
-	short bpp = (var->bits_per_pixel & 0xff);
-
-	if (bpp < 8)
-		bpp = 8;
-
-	tmp = mask | (mask << 16);
-
-#if 0
-	/*
-	 * Check for blitter finished before we start messing with the
-	 * pattern.
-	 */
-	do{
-		blt_status = *(((volatile unsigned char *)acm) +
-			       (ACM_START_STATUS + 2));
-	}while ((blt_status & 1) == 0);
-#endif
-
-	i = 0;
-	do{
-		*pattern++ = tmp;
-	}while(i++ < bpp/4);
-
-	tmp = cmd << 8;
-	*(acm + ACM_RASTEROP_ROTATION/4) = tmp;
-
-	mod = 0xc0c2;
-
-	pat = 8 * PAT_MEM_OFF;
-	dst = bpp * (destx + desty * xres_virtual);
-
-	/*
-	 * Source is not set for clear.
-	 */
-	if ((cmd != Z3BLTclear) && (cmd != Z3BLTset)) {
-		src = bpp * (srcx + srcy * xres_virtual);
-
-		if (destx > srcx) {
-			mod &= ~0x8000;
-			src += bpp * (width - 1);
-			dst += bpp * (width - 1);
-			pat += bpp * 2;
-		}
-		if (desty > srcy) {
-			mod &= ~0x4000;
-			src += bpp * (height - 1) * xres_virtual;
-			dst += bpp * (height - 1) * xres_virtual;
-			pat += bpp * 4;
-		}
-
-		*(acm + ACM_SOURCE/4) = cpu_to_le32(src);
-	}
-
-	*(acm + ACM_PATTERN/4) = cpu_to_le32(pat);
-
-	*(acm + ACM_DESTINATION/4) = cpu_to_le32(dst);
-
-	tmp = mod << 16;
-	*(acm + ACM_CONTROL/4) = tmp;
-
-	tmp  = width | (height << 16);
-	
-	*(acm + ACM_BITMAP_DIMENSION/4) = cpu_to_le32(tmp);
-
-	*(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x00;
-	*(((volatile unsigned char *)acm) + ACM_START_STATUS) = 0x01;
-
-	/*
-	 * No reason to wait for the blitter to finish, it is better
-	 * just to check if it has finished before we use it again.
-	 */
-#if 1
-#if 0
-	while ((*(((volatile unsigned char *)acm) +
-		  (ACM_START_STATUS + 2)) & 1) == 0);
-#else
-	do{
-		blt_status = *(((volatile unsigned char *)acm) +
-			       (ACM_START_STATUS + 2));
-	}
-	while ((blt_status & 1) == 0);
-#endif
-#endif
-}
-
-#if 0
-void retz3_fill (unsigned short x, unsigned short y, unsigned
-		 short width, unsigned short height,
-		 unsigned short mode, unsigned short color)
-{
-
-}
-#endif
-
-
-/**************************************************************
- * Move cursor to x, y
- */
-void retz3_MoveCursor (unsigned short x, unsigned short y)
-{
-	/* Guess we gotta deal with the cursor at some point */
-}
-
-
-/* -------------------- Interfaces to hardware functions -------------------- */
-
-
-static struct fb_hwswitch retz3_switch = {
-	retz3_init, retz3_encode_fix, retz3_decode_var, retz3_encode_var,
-	retz3_getcolreg, retz3_setcolreg, retz3_blank
-};
-
-
-/* -------------------- Generic routines ------------------------------------ */
-
-
-/*
- *    Fill the hardware's `par' structure.
- */
-
-static void retz3_fb_get_par(struct retz3_fb_par *par)
-{
-	if (current_par_valid)
-		*par = current_par;
-	else
-		fbhw->decode_var(&retz3_fb_predefined[z3fb_mode], par);
-}
-
-
-static void retz3_fb_set_par(struct retz3_fb_par *par)
-{
-	current_par = *par;
-	current_par_valid = 1;
-}
-
-
-static int do_fb_set_var(struct fb_var_screeninfo *var, int isactive)
-{
-	int err, activate;
-	struct retz3_fb_par par;
-
-	if ((err = fbhw->decode_var(var, &par)))
-		return err;
-	activate = var->activate;
-	if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW && isactive)
-		retz3_fb_set_par(&par);
-	fbhw->encode_var(var, &par);
-	var->activate = activate;
-
-#if 1
-	retz3_set_video(var, &current_par);
-#endif
-	return 0;
-}
-
-
-/*
- *    Default Colormaps
- */
-
-static unsigned short red16[] =
-	{ 0x0000, 0x0000, 0x0000, 0x0000, 0xc000, 0xc000, 0xc000, 0xc000,
-	  0x8000, 0x0000, 0x0000, 0x0000, 0xffff, 0xffff, 0xffff, 0xffff };
-static unsigned short green16[] =
-	{ 0x0000, 0x0000, 0xc000, 0xc000, 0x0000, 0x0000, 0xc000, 0xc000,
-	  0x8000, 0x0000, 0xffff, 0xffff, 0x0000, 0x0000, 0xffff, 0xffff };
-static unsigned short blue16[] =
-	{ 0x0000, 0xc000, 0x0000, 0xc000, 0x0000, 0xc000, 0x0000, 0xc000,
-	  0x8000, 0xffff, 0x0000, 0xffff, 0x0000, 0xffff, 0x0000, 0xffff };
-
-
-static struct fb_cmap default_16_colors =
-   { 0, 16, red16, green16, blue16, NULL };
-
-
-static struct fb_cmap *get_default_colormap(int bpp)
-{
-	return &default_16_colors;
-}
-
-
-#define CNVT_TOHW(val,width)     ((((val)<<(width))+0x7fff-(val))>>16)
-#define CNVT_FROMHW(val,width)   (((width) ? ((((val)<<16)-(val)) / \
-                                              ((1<<(width))-1)) : 0))
-
-static int do_fb_get_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
-                          int kspc)
-{
-	int i, start;
-	unsigned short *red, *green, *blue, *transp;
-	unsigned int hred, hgreen, hblue, htransp;
-
-	red = cmap->red;
-	green = cmap->green;
-	blue = cmap->blue;
-	transp = cmap->transp;
-	start = cmap->start;
-
-	if (start < 0)
-		return -EINVAL;
-	for (i = 0; i < cmap->len; i++) {
-		if (fbhw->getcolreg(start++, &hred, &hgreen, &hblue, &htransp))
-			return 0;
-		hred = CNVT_FROMHW(hred, var->red.length);
-		hgreen = CNVT_FROMHW(hgreen, var->green.length);
-		hblue = CNVT_FROMHW(hblue, var->blue.length);
-		htransp = CNVT_FROMHW(htransp, var->transp.length);
-		if (kspc) {
-			*red = hred;
-			*green = hgreen;
-			*blue = hblue;
-			if (transp)
-				*transp = htransp;
-		} else {
-			put_user(hred, red);
-			put_user(hgreen, green);
-			put_user(hblue, blue);
-			if (transp)
-				put_user(htransp, transp);
-		}
-		red++;
-		green++;
-		blue++;
-		if (transp)
-			transp++;
-	}
-	return 0;
-}
-
-
-static int do_fb_set_cmap(struct fb_cmap *cmap, struct fb_var_screeninfo *var,
-                          int kspc)
-{
-	int i, start;
-	unsigned short *red, *green, *blue, *transp;
-	unsigned int hred, hgreen, hblue, htransp;
-
-	red = cmap->red;
-	green = cmap->green;
-	blue = cmap->blue;
-	transp = cmap->transp;
-	start = cmap->start;
-
-	if (start < 0)
-		return -EINVAL;
-	for (i = 0; i < cmap->len; i++) {
-		if (kspc) {
-			hred = *red;
-			hgreen = *green;
-			hblue = *blue;
-			htransp = transp ? *transp : 0;
-		} else {
-			get_user(hred, red);
-			get_user(hgreen, green);
-			get_user(hblue, blue);
-			if (transp)
-				get_user(htransp, transp);
-			else
-				htransp = 0;
-		}
-		hred = CNVT_TOHW(hred, var->red.length);
-		hgreen = CNVT_TOHW(hgreen, var->green.length);
-		hblue = CNVT_TOHW(hblue, var->blue.length);
-		htransp = CNVT_TOHW(htransp, var->transp.length);
-		red++;
-		green++;
-		blue++;
-		if (transp)
-			transp++;
-		if (fbhw->setcolreg(start++, hred, hgreen, hblue, htransp))
-			return 0;
-	}
-	return 0;
-}
-
-
-static void do_install_cmap(int con)
-{
-	if (con != currcon)
-		return;
-	if (disp[con].cmap.len)
-		do_fb_set_cmap(&disp[con].cmap, &disp[con].var, 1);
-	else
-		do_fb_set_cmap(get_default_colormap(disp[con].var.bits_per_pixel),
-                                          &disp[con].var, 1);
-}
-
-
-static void memcpy_fs(int fsfromto, void *to, void *from, int len)
-{
-	switch (fsfromto) {
-	case 0:
-		memcpy(to, from, len);
-		return;
-	case 1:
-		copy_from_user(to, from, len);
-		return;
-	case 2:
-		copy_to_user(to, from, len);
-		return;
-	}
-}
-
-
-static void copy_cmap(struct fb_cmap *from, struct fb_cmap *to, int fsfromto)
-{
-	int size;
-	int tooff = 0, fromoff = 0;
-
-	if (to->start > from->start)
-		fromoff = to->start-from->start;
-	else
-		tooff = from->start-to->start;
-	size = to->len-tooff;
-	if (size > from->len-fromoff)
-		size = from->len-fromoff;
-	if (size < 0)
-		return;
-	size *= sizeof(unsigned short);
-	memcpy_fs(fsfromto, to->red+tooff, from->red+fromoff, size);
-	memcpy_fs(fsfromto, to->green+tooff, from->green+fromoff, size);
-	memcpy_fs(fsfromto, to->blue+tooff, from->blue+fromoff, size);
-	if (from->transp && to->transp)
-		memcpy_fs(fsfromto, to->transp+tooff,
-			  from->transp+fromoff, size);
-}
-
-
-static int alloc_cmap(struct fb_cmap *cmap, int len, int transp)
-{
-	int size = len*sizeof(unsigned short);
-
-	if (cmap->len != len) {
-		if (cmap->red)
-			kfree(cmap->red);
-		if (cmap->green)
-			kfree(cmap->green);
-		if (cmap->blue)
-			kfree(cmap->blue);
-		if (cmap->transp)
-			kfree(cmap->transp);
-		cmap->red = cmap->green = cmap->blue = cmap->transp = NULL;
-		cmap->len = 0;
-		if (!len)
-			return 0;
-		if (!(cmap->red = kmalloc(size, GFP_ATOMIC)))
-			return -1;
-		if (!(cmap->green = kmalloc(size, GFP_ATOMIC)))
-			return -1;
-		if (!(cmap->blue = kmalloc(size, GFP_ATOMIC)))
-			return -1;
-		if (transp) {
-			if (!(cmap->transp = kmalloc(size, GFP_ATOMIC)))
-				return -1;
-		} else
-			cmap->transp = NULL;
-	}
-	cmap->start = 0;
-	cmap->len = len;
-	copy_cmap(get_default_colormap(len), cmap, 0);
-	return 0;
-}
-
-
-/*
- *    Get the Fixed Part of the Display
- */
-
-static int retz3_fb_get_fix(struct fb_fix_screeninfo *fix, int con)
-{
-	struct retz3_fb_par par;
-	int error = 0;
-
-	if (con == -1)
-		retz3_fb_get_par(&par);
-	else
-		error = fbhw->decode_var(&disp[con].var, &par);
-	return(error ? error : fbhw->encode_fix(fix, &par));
-}
-
-
-/*
- *    Get the User Defined Part of the Display
- */
-
-static int retz3_fb_get_var(struct fb_var_screeninfo *var, int con)
-{
-	struct retz3_fb_par par;
-	int error = 0;
-
-	if (con == -1) {
-		retz3_fb_get_par(&par);
-		error = fbhw->encode_var(var, &par);
-	} else
-		*var = disp[con].var;
-	return error;
-}
-
-
-static void retz3_fb_set_disp(int con)
-{
-	struct fb_fix_screeninfo fix;
-
-	retz3_fb_get_fix(&fix, con);
-	if (con == -1)
-		con = 0;
-	disp[con].screen_base = (unsigned char *)fix.smem_start;
-	disp[con].visual = fix.visual;
-	disp[con].type = fix.type;
-	disp[con].type_aux = fix.type_aux;
-	disp[con].ypanstep = fix.ypanstep;
-	disp[con].ywrapstep = fix.ywrapstep;
-	disp[con].can_soft_blank = 1;
-	disp[con].inverse = z3fb_inverse;
-}
-
-
-/*
- *    Set the User Defined Part of the Display
- */
-
-static int retz3_fb_set_var(struct fb_var_screeninfo *var, int con)
-{
-	int err, oldxres, oldyres, oldvxres, oldvyres, oldbpp;
-
-	if ((err = do_fb_set_var(var, con == currcon)))
-		return err;
-	if ((var->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
-		oldxres = disp[con].var.xres;
-		oldyres = disp[con].var.yres;
-		oldvxres = disp[con].var.xres_virtual;
-		oldvyres = disp[con].var.yres_virtual;
-		oldbpp = disp[con].var.bits_per_pixel;
-		disp[con].var = *var;
-		if (oldxres != var->xres || oldyres != var->yres ||
-		    oldvxres != var->xres_virtual ||
-		    oldvyres != var->yres_virtual ||
-		    oldbpp != var->bits_per_pixel) {
-			retz3_fb_set_disp(con);
-			(*fb_info.changevar)(con);
-			alloc_cmap(&disp[con].cmap, 0, 0);
-			do_install_cmap(con);
-		}
-	}
-	var->activate = 0;
-	return 0;
-}
-
-
-/*
- *    Get the Colormap
- */
-
-static int retz3_fb_get_cmap(struct fb_cmap *cmap, int kspc, int con)
-{
-	if (con == currcon) /* current console? */
-		return(do_fb_get_cmap(cmap, &disp[con].var, kspc));
-	else if (disp[con].cmap.len) /* non default colormap? */
-		copy_cmap(&disp[con].cmap, cmap, kspc ? 0 : 2);
-	else
-		copy_cmap(get_default_colormap(disp[con].var.bits_per_pixel),
-			  cmap, kspc ? 0 : 2);
-	return 0;
-}
-
-
-/*
- *    Set the Colormap
- */
-
-static int retz3_fb_set_cmap(struct fb_cmap *cmap, int kspc, int con)
-{
-	int err;
-
-	if (!disp[con].cmap.len) {       /* no colormap allocated? */
-		if ((err = alloc_cmap(&disp[con].cmap,
-				      1<<disp[con].var.bits_per_pixel, 0)))
-			return err;
-	}
-	if (con == currcon)              /* current console? */
-		return(do_fb_set_cmap(cmap, &disp[con].var, kspc));
-	else
-		copy_cmap(cmap, &disp[con].cmap, kspc ? 0 : 1);
-	return 0;
-}
-
-
-/*
- *    Pan or Wrap the Display
- *
- *    This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
- */
-
-static int retz3_fb_pan_display(struct fb_var_screeninfo *var, int con)
-{
-	return -EINVAL;
-}
-
-
-/*
- *    RetinaZ3 Frame Buffer Specific ioctls
- */
-
-static int retz3_fb_ioctl(struct inode *inode, struct file *file,
-                          unsigned int cmd, unsigned long arg, int con)
-{
-	return -EINVAL;
-}
-
-
-static struct fb_ops retz3_fb_ops = {
-   retz3_fb_get_fix, retz3_fb_get_var, retz3_fb_set_var, retz3_fb_get_cmap,
-   retz3_fb_set_cmap, retz3_fb_pan_display, retz3_fb_ioctl
-};
-
-
-int retz3_probe(void)
-{
-	z3_key = zorro_find(MANUF_MACROSYSTEMS2, PROD_RETINA_Z3, 0, 0);
-	return(z3_key);
-}
-
-
-void retz3_video_setup(char *options, int *ints)
-{
-	char *this_opt;
-	int i;
-
-	fb_info.fontname[0] = '\0';
-
-	if (!options || !*options)
-		return;
-
-	for (this_opt = strtok(options, ","); this_opt; 
-	     this_opt = strtok(NULL, ",")){
-		if (!strcmp(this_opt, "inverse")) {
-			z3fb_inverse = 1;
-			for (i = 0; i < 16; i++) {
-				red16[i] = ~red16[i];
-				green16[i] = ~green16[i];
-				blue16[i] = ~blue16[i];
-			}
-		} else if (!strncmp(this_opt, "font:", 5))
-			strcpy(fb_info.fontname, this_opt+5);
-		else
-			z3fb_mode = get_video_mode(this_opt);
-	}
-}
-
-
-/*
- *    Initialization
- */
-
-__initfunc(struct fb_info *retz3_fb_init(long *mem_start))
-{
-	int err;
-	struct retz3_fb_par par;
-
-	memstart = mem_start;
-
-	fbhw = &retz3_switch;
-
-	err = register_framebuffer(retz3_fb_name, &node, &retz3_fb_ops,
-				   NUM_TOTAL_MODES, retz3_fb_predefined);
-	if (err < 0)
-		panic("Cannot register frame buffer\n");
-
-	fbhw->init();
-
-	if (z3fb_mode == -1)
-		z3fb_mode = 1;
-
-	fbhw->decode_var(&retz3_fb_predefined[z3fb_mode], &par);
-	fbhw->encode_var(&retz3_fb_predefined[0], &par);
-
-	strcpy(fb_info.modename, retz3_fb_name);
-	fb_info.disp = disp;
-	fb_info.switch_con = &z3fb_switch;
-	fb_info.updatevar = &z3fb_updatevar;
-	fb_info.blank = &z3fb_blank;
-	fb_info.setcmap = &z3fb_setcmap;
-
-	do_fb_set_var(&retz3_fb_predefined[0], 0);
-	retz3_fb_get_var(&disp[0].var, -1);
-	retz3_fb_set_disp(-1);
-	do_install_cmap(0);
-
-	return &fb_info;
-}
-
-
-static int z3fb_switch(int con)
-{
-	/* Do we have to save the colormap? */
-	if (disp[currcon].cmap.len)
-		do_fb_get_cmap(&disp[currcon].cmap, &disp[currcon].var, 1);
-
-	do_fb_set_var(&disp[con].var, 1);
-	currcon = con;
-	/* Install new colormap */
-	do_install_cmap(con);
-	return 0;
-}
-
-
-/*
- *    Update the `var' structure (called by fbcon.c)
- *
- *    This call looks only at yoffset and the FB_VMODE_YWRAP flag in `var'.
- *    Since it's called by a kernel driver, no range checking is done.
- */
-
-static int z3fb_updatevar(int con)
-{
-	return 0;
-}
-
-
-/*
- *    Blank the display.
- */
-
-static void z3fb_blank(int blank)
-{
-	fbhw->blank(blank);
-}
-
-
-/*
- *    Set the colormap
- */
-
-static int z3fb_setcmap(struct fb_cmap *cmap, int con)
-{
-	return(retz3_fb_set_cmap(cmap, 1, con));
-}
-
-
-/*
- *    Get a Video Mode
- */
-
-static int get_video_mode(const char *name)
-{
-	int i;
-
-	for (i = 1; i <= NUM_PREDEF_MODES; i++)
-		if (!strcmp(name, retz3_fb_modenames[i])){
-			retz3_fb_predefined[0] = retz3_fb_predefined[i];
-			return i;
-		}
-	return -1;
-}

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TCL-scripts by Sam Shen, slshen@lbl.gov