From a24f6673f6d58683abe7eacacb1b524d58837409 Mon Sep 17 00:00:00 2001
From: Harald Koerfgen <hkoerfg@web.de>
Date: Sun, 28 Jan 2001 10:54:14 +0000
Subject: DECstation framebuffer drivers from Michael Engel and Karsten Merker

---
 drivers/video/Config.in    |   8 +-
 drivers/video/Makefile     |   5 +-
 drivers/video/fbmem.c      |  17 +-
 drivers/video/maxinefb.c   | 425 ++++++++++++++++++++++++++++++++++++++++++++
 drivers/video/maxinefb.h   |  37 ++++
 drivers/video/pmag-ba-fb.c |  93 +++++-----
 drivers/video/pmagb-b-fb.c | 434 +++++++++++++++++++++++++++++++++++++++++++++
 drivers/video/pmagb-b-fb.h |  32 ++++
 8 files changed, 996 insertions(+), 55 deletions(-)
 create mode 100644 drivers/video/maxinefb.c
 create mode 100644 drivers/video/maxinefb.h
 create mode 100644 drivers/video/pmagb-b-fb.c
 create mode 100644 drivers/video/pmagb-b-fb.h

(limited to 'drivers/video')

diff --git a/drivers/video/Config.in b/drivers/video/Config.in
index 4a41ab8f6..dfd8e10c5 100644
--- a/drivers/video/Config.in
+++ b/drivers/video/Config.in
@@ -158,7 +158,9 @@ if [ "$CONFIG_FB" = "y" ]; then
    fi
    if [ "$CONFIG_DECSTATION" = "y" ]; then
      if [ "$CONFIG_TC" = "y" ]; then
-       bool '  PMAG-BA TURBOchannel framebuffer support' CONFIG_FB_PMAGBA
+       bool '  PMAG-BA TURBOchannel framebuffer support' CONFIG_FB_PMAG_BA
+       bool '  PMAGB-B TURBOchannel framebuffer spport' CONFIG_FB_PMAGB_B
+       bool '  Maxine (Personal DECstation) onboard framebuffer spport' CONFIG_FB_MAXINE
      fi
    fi
    if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
@@ -227,6 +229,8 @@ if [ "$CONFIG_FB" = "y" ]; then
 	   "$CONFIG_FB_RIVA" = "y" -o \
 	   "$CONFIG_FB_SGIVW" = "y" -o "$CONFIG_FB_CYBER2000" = "y" -o \
 	   "$CONFIG_FB_SA1100" = "y" -o "$CONFIG_FB_3DFX" = "y" -o \
+	   "$CONFIG_FB_PMAG_BA" = "y" -o "$CONFIG_FB_PMAGB_B" = "y" -o \
+	   "$CONFIG_FB_MAXINE" = "y" -o \
 	   "$CONFIG_FB_SIS" = "y" ]; then
 	 define_tristate CONFIG_FBCON_CFB8 y
       else
@@ -244,6 +248,8 @@ if [ "$CONFIG_FB" = "y" ]; then
 	      "$CONFIG_FB_P9100" = "m" -o "$CONFIG_FB_ATY128" = "m" -o \
 	      "$CONFIG_FB_RIVA" = "m" -o "$CONFIG_FB_3DFX" = "m" -o \
 	      "$CONFIG_FB_SGIVW" = "m" -o "$CONFIG_FB_CYBER2000" = "m" -o \
+	      "$CONFIG_FB_PMAG_BA" = "m" -o "CONFIG_FB_PMAGB_B" = "m" -o \
+	      "$CONFIG_FB_MAXINE" = "m" -o \
 	      "$CONFIG_FB_SA1100" = "m" -o "$CONFIG_FB_SIS" = "m" ]; then
 	    define_tristate CONFIG_FBCON_CFB8 m
 	 fi
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 778af1db6..38403b55a 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -78,7 +78,10 @@ obj-$(CONFIG_FB_TCX)              += tcxfb.o sbusfb.o
 obj-$(CONFIG_FB_CGFOURTEEN)       += cgfourteenfb.o sbusfb.o
 obj-$(CONFIG_FB_P9100)            += p9100fb.o sbusfb.o
 obj-$(CONFIG_FB_LEO)              += leofb.o sbusfb.o
-obj-$(CONFIG_FB_PMAGBA)           += pmag-ba-fb.o
+obj-$(CONFIG_FB_PMAG_BA)          += pmag-ba-fb.o
+obj-$(CONFIG_FB_PMAGB_B)          += pmagb-b-fb.o
+obj-$(CONFIG_FB_MAXINE)           += maxinefb.o
+
 
 subdir-$(CONFIG_FB_MATROX)	  += matrox
 ifeq ($(CONFIG_FB_MATROX),y)
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 75b6aee16..a951ccf5e 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -117,6 +117,10 @@ extern int stifb_init(void);
 extern int stifb_setup(char*);
 extern int pmagbafb_init(void);
 extern int pmagbafb_setup(char *);
+extern int pmagbbfb_init(void);
+extern int pmagbbfb_setup(char *options, int *ints);
+extern void maxinefb_init(void);
+extern void maxinefb_setup(char *options, int *ints);
 
 static struct {
 	const char *name;
@@ -274,10 +278,19 @@ static struct {
 	/* Not a real frame buffer device... */
 	{ "resolver", NULL, resolver_video_setup },
 #endif
-#ifdef CONFIG_FB_PMAGBA
-	{ "pmagbafb", pmagbafb_init, pmagbafb_setup },
+
+#ifdef CONFIG_FB_PMAG_BA
+       { "pmagbafb", pmagbafb_init, pmagbafb_setup },
+#endif
+#ifdef CONFIG_FB_PMAGB_B
+        { "pmagbbfb", pmagbbfb_init, pmagbbfb_setup },
 #endif
 
+#ifdef CONFIG_FB_MAXINE
+        { "maxinefb", maxinefb_init, maxinefb_setup },
+#endif
+
+
 #ifdef CONFIG_FB_VIRTUAL
 	/*
 	 * Vfb must be last to avoid that it becomes your primary display if
diff --git a/drivers/video/maxinefb.c b/drivers/video/maxinefb.c
new file mode 100644
index 000000000..76039c289
--- /dev/null
+++ b/drivers/video/maxinefb.c
@@ -0,0 +1,425 @@
+/*
+ *      linux/drivers/video/maxinefb.c
+ *
+ *	DECstation 5000/xx onboard framebuffer support ... derived from:
+ *	"HP300 Topcat framebuffer support (derived from macfb of all things)
+ *	Phil Blundell <philb@gnu.org> 1998", the original code can be
+ *      found in the file hpfb.c in the same directory.
+ *
+ *      DECstation related code Copyright (C) 1999,2000,2001 by
+ *      Michael Engel <engel@unix-ag.org> and
+ *      Karsten Merker <merker@linuxtag.org>.
+ *      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.
+ *
+ */
+
+/*
+ * Changes:
+ * 2001/01/27 removed debugging and testing code, fixed fb_ops
+ *            initialization which had caused a crash before,
+ *            general cleanup, first official release (KM)
+ *
+ */
+
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.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/init.h>
+#include <linux/fb.h>
+#include <video/fbcon.h>
+#include "maxinefb.h"
+
+/* bootinfo.h defines the machine type values, needed when checking */
+/* whether are really running on a maxine, KM                       */
+#include <asm/bootinfo.h>
+
+#include <video/fbcon-mfb.h>
+#include <video/fbcon-cfb2.h>
+#include <video/fbcon-cfb4.h>
+#include <video/fbcon-cfb8.h>
+
+#define arraysize(x)    (sizeof(x)/sizeof(*(x)))
+
+static struct display disp;
+static struct fb_info fb_info;
+
+unsigned long fb_start, fb_size = 1024 * 768, fb_line_length = 1024;
+unsigned long fb_regs;
+unsigned char fb_bitmask;
+
+static struct fb_var_screeninfo maxinefb_defined = {
+	0, 0, 0, 0,		/* W,H, W, H (virtual) load xres,xres_virtual */
+	0, 0,			/* virtual -> visible no offset */
+	0,			/* depth -> load bits_per_pixel */
+	0,			/* greyscale ? */
+	{0, 0, 0},		/* R */
+	{0, 0, 0},		/* G */
+	{0, 0, 0},		/* B */
+	{0, 0, 0},		/* transparency */
+	0,			/* standard pixel format */
+	FB_ACTIVATE_NOW,
+	274, 195,		/* 14" monitor */
+	FB_ACCEL_NONE,
+	0L, 0L, 0L, 0L, 0L,
+	0L, 0L, 0,		/* No sync info */
+	FB_VMODE_NONINTERLACED,
+	{0, 0, 0, 0, 0, 0}
+};
+
+struct maxinefb_par {
+};
+
+static int currcon = 0;
+struct maxinefb_par current_par;
+
+/* Reference to machine type set in arch/mips/dec/prom/identify.c, KM */
+extern unsigned long mips_machtype;
+
+
+/* Handle the funny Inmos RamDAC/video controller ... */
+
+void maxinefb_ims332_write_register(int regno, register unsigned int val)
+{
+	register unsigned char *regs = (char *) MAXINEFB_IMS332_ADDRESS;
+	unsigned char *wptr;
+
+	wptr = regs + 0xa0000 + (regno << 4);
+	*((volatile unsigned int *) (regs)) = (val >> 8) & 0xff00;
+	*((volatile unsigned short *) (wptr)) = val;
+}
+
+unsigned int maxinefb_ims332_read_register(int regno)
+{
+	register unsigned char *regs = (char *) MAXINEFB_IMS332_ADDRESS;
+	unsigned char *rptr;
+	register unsigned int j, k;
+
+	rptr = regs + 0x80000 + (regno << 4);
+	j = *((volatile unsigned short *) rptr);
+	k = *((volatile unsigned short *) regs);
+
+	return (j & 0xffff) | ((k & 0xff00) << 8);
+}
+
+
+static void maxinefb_encode_var(struct fb_var_screeninfo *var,
+				struct maxinefb_par *par)
+{
+	int i = 0;
+	var->xres = 1024;
+	var->yres = 768;
+	var->xres_virtual = 1024;
+	var->yres_virtual = 768;
+	var->xoffset = 0;
+	var->yoffset = 0;
+	var->bits_per_pixel = 8;
+	var->grayscale = 0;
+	var->transp.offset = 0;
+	var->transp.length = 0;
+	var->transp.msb_right = 0;
+	var->nonstd = 0;
+	var->activate = 1;
+	var->height = -1;
+	var->width = -1;
+	var->vmode = FB_VMODE_NONINTERLACED;
+	var->pixclock = 0;
+	var->sync = 0;
+	var->left_margin = 0;
+	var->right_margin = 0;
+	var->upper_margin = 0;
+	var->lower_margin = 0;
+	var->hsync_len = 0;
+	var->vsync_len = 0;
+	for (i = 0; i < arraysize(var->reserved); i++)
+		var->reserved[i] = 0;
+}
+
+static void maxinefb_get_par(struct maxinefb_par *par)
+{
+	*par = current_par;
+}
+
+static int maxinefb_fb_update_var(int con, struct fb_info *info)
+{
+	return 0;
+}
+
+static int maxinefb_do_fb_set_var(struct fb_var_screeninfo *var,
+				  int isactive)
+{
+	struct maxinefb_par par;
+
+	maxinefb_get_par(&par);
+	maxinefb_encode_var(var, &par);
+	return 0;
+}
+
+
+/* Get the palette */
+
+static int maxinefb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+			     struct fb_info *info)
+{
+	unsigned int i;
+	unsigned long hw_colorvalue = 0;	/* raw color value from the register */
+	unsigned int length;
+
+	if (((cmap->start) + (cmap->len)) >= 256) {
+		length = 256 - (cmap->start);
+	} else {
+		length = cmap->len;
+	}
+	for (i = 0; i < length; i++) {
+		hw_colorvalue =
+		    maxinefb_ims332_read_register(IMS332_REG_COLOR_PALETTE
+						  + cmap->start + i);
+		(cmap->red[i]) = ((hw_colorvalue & 0x0000ff));
+		(cmap->green[i]) = ((hw_colorvalue & 0x00ff00) >> 8);
+		(cmap->blue[i]) = ((hw_colorvalue & 0xff0000) >> 16);
+
+	}
+	return 0;
+}
+
+
+/* Set the palette */
+
+static int maxinefb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+			     struct fb_info *info)
+{
+	unsigned int i;
+	unsigned long hw_colorvalue;	/* value to be written into the palette reg. */
+	unsigned short cmap_red;
+	unsigned short cmap_green;
+	unsigned short cmap_blue;
+	unsigned int length;
+
+	hw_colorvalue = 0;
+	if (((cmap->start) + (cmap->len)) >= 256) {
+		length = 256 - (cmap->start);
+	} else {
+		length = cmap->len;
+	}
+
+	for (i = 0; i < length; i++) {
+		cmap_red = ((cmap->red[i]) >> 8);	/* The cmap fields are 16 bits    */
+		cmap_green = ((cmap->green[i]) >> 8);	/* wide, but the harware colormap */
+		cmap_blue = ((cmap->blue[i]) >> 8);	/* registers are only 8 bits wide */
+
+		hw_colorvalue =
+		    (cmap_blue << 16) + (cmap_green << 8) + (cmap_red);
+		maxinefb_ims332_write_register(IMS332_REG_COLOR_PALETTE +
+					       cmap->start + i,
+					       hw_colorvalue);
+	}
+	return 0;
+}
+
+static int maxinefb_get_var(struct fb_var_screeninfo *var, int con,
+			    struct fb_info *info)
+{
+	struct maxinefb_par par;
+	if (con == -1) {
+		maxinefb_get_par(&par);
+		maxinefb_encode_var(var, &par);
+	} else
+		*var = fb_display[con].var;
+	return 0;
+}
+
+
+static int maxinefb_set_var(struct fb_var_screeninfo *var, int con,
+			    struct fb_info *info)
+{
+	int err;
+
+	if ((err = maxinefb_do_fb_set_var(var, 1)))
+		return err;
+	return 0;
+}
+static void maxinefb_encode_fix(struct fb_fix_screeninfo *fix,
+				struct maxinefb_par *par)
+{
+	memset(fix, 0, sizeof(struct fb_fix_screeninfo));
+	strcpy(fix->id, "maxinefb");
+	/* fix->id is a char[16], so a maximum of 15 characters, KM */
+
+	fix->smem_start = (char *) fb_start;	/* display memory base address, KM */
+	fix->smem_len = fb_size;
+	fix->type = FB_TYPE_PACKED_PIXELS;
+	fix->visual = FB_VISUAL_PSEUDOCOLOR;
+	fix->xpanstep = 0;
+	fix->ypanstep = 0;
+	fix->ywrapstep = 0;
+	fix->line_length = fb_line_length;
+}
+
+static int maxinefb_get_fix(struct fb_fix_screeninfo *fix, int con,
+			    struct fb_info *info)
+{
+	struct maxinefb_par par;
+	maxinefb_get_par(&par);
+	maxinefb_encode_fix(fix, &par);
+	return 0;
+}
+
+
+static int maxinefb_ioctl(struct inode *inode, struct file *file,
+			  unsigned int cmd, unsigned long arg, int con,
+			  struct fb_info *info)
+{
+	return -EINVAL;
+}
+
+static int maxinefb_switch(int con, struct fb_info *info)
+{
+	maxinefb_do_fb_set_var(&fb_display[con].var, 1);
+	currcon = con;
+	return 0;
+}
+
+/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
+
+static void maxinefb_blank(int blank, struct fb_info *info)
+{
+	/* Not supported */
+}
+
+static int maxinefb_open(struct fb_info *info, int user)
+{
+	/*
+	 * Nothing, only a usage count for the moment
+	 */
+	MOD_INC_USE_COUNT;
+	return (0);
+}
+
+static void maxinefb_set_disp(int con)
+{
+	struct fb_fix_screeninfo fix;
+	struct display *display;
+
+	if (con >= 0)
+		display = &fb_display[con];
+	else
+		display = &disp;	/* used during initialization */
+
+	maxinefb_get_fix(&fix, con, 0);
+
+	display->screen_base = fix.smem_start;
+	display->visual = fix.visual;
+	display->type = fix.type;
+	display->type_aux = fix.type_aux;
+	display->ypanstep = fix.ypanstep;
+	display->ywrapstep = fix.ywrapstep;
+	display->line_length = fix.line_length;
+	display->next_line = fix.line_length;
+	display->can_soft_blank = 0;
+	display->inverse = 0;
+
+	display->dispsw = &fbcon_cfb8;
+}
+
+static int maxinefb_release(struct fb_info *info, int user)
+{
+	MOD_DEC_USE_COUNT;
+	return (0);
+}
+
+static struct fb_ops maxinefb_ops = {
+	owner:THIS_MODULE,
+	fb_open:maxinefb_open,
+	fb_release:maxinefb_release,
+	fb_get_fix:maxinefb_get_fix,
+	fb_get_var:maxinefb_get_var,
+	fb_set_var:maxinefb_set_var,
+	fb_get_cmap:maxinefb_get_cmap,
+	fb_set_cmap:maxinefb_set_cmap,
+	fb_ioctl:maxinefb_ioctl,
+	fb_mmap:0,
+	fb_rasterimg:0
+};
+
+int __init maxinefb_init_one()
+{
+	volatile unsigned char *fboff;
+	int i;
+
+	/* Framebuffer display memory base address */
+	fb_start = DS5000_xx_ONBOARD_FBMEM_START;
+
+	/* Clear screen */
+	for (fboff = fb_start; fboff < fb_start + 0x1ffff; fboff++)
+		*fboff = 0x0;
+
+	/* erase hardware cursor */
+	for (i = 0; i < 512; i++) {
+		maxinefb_ims332_write_register(IMS332_REG_CURSOR_RAM + i,
+					       0);
+		/*
+		   if (i&0x8 == 0)
+		   maxinefb_ims332_write_register (IMS332_REG_CURSOR_RAM + i, 0x0f);
+		   else
+		   maxinefb_ims332_write_register (IMS332_REG_CURSOR_RAM + i, 0xf0);
+		 */
+	}
+
+	/* Fill in the available video resolution */
+	maxinefb_defined.xres = 1024;
+	maxinefb_defined.yres = 768;
+	maxinefb_defined.xres_virtual = 1024;
+	maxinefb_defined.yres_virtual = 768;
+	maxinefb_defined.bits_per_pixel = 8;
+
+	/* Let there be consoles... */
+
+	strcpy(fb_info.modename, "Maxine onboard graphics 1024x768x8");
+	/* fb_info.modename: maximum of 39 characters + trailing nullbyte, KM */
+	fb_info.changevar = NULL;
+	fb_info.node = -1;
+	fb_info.fbops = &maxinefb_ops;
+	fb_info.disp = &disp;
+	fb_info.switch_con = &maxinefb_switch;
+	fb_info.updatevar = &maxinefb_fb_update_var;
+	fb_info.blank = &maxinefb_blank;
+	fb_info.flags = FBINFO_FLAG_DEFAULT;
+	maxinefb_do_fb_set_var(&maxinefb_defined, 1);
+
+	maxinefb_get_var(&disp.var, -1, &fb_info);
+	maxinefb_set_disp(-1);
+
+	if (register_framebuffer(&fb_info) < 0)
+		return 1;
+
+	return 0;
+}
+
+
+/* Initialise the framebuffer */
+
+void __init maxinefb_init()
+{
+	unsigned int sid;
+
+	if (mips_machtype == MACH_DS5000_XX) {
+		printk("Maxinefb: Personal DECstation detected\n");
+		printk("Maxinefb: initializing onboard framebuffer\n");
+
+		maxinefb_init_one();
+
+	}
+
+}
+
+void __init maxinefb_setup(char *options, int *ints)
+{
+}
diff --git a/drivers/video/maxinefb.h b/drivers/video/maxinefb.h
new file mode 100644
index 000000000..f85b718b8
--- /dev/null
+++ b/drivers/video/maxinefb.h
@@ -0,0 +1,37 @@
+/*
+ *      linux/drivers/video/maxinefb.h
+ *
+ *      DECstation 5000/xx onboard framebuffer support, Copyright (C) 1999 by
+ *      Michael Engel <engel@unix-ag.org> and Karsten Merker <merker@guug.de>
+ *      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.
+ */
+
+
+/*
+ * IMS332 video controller register base address
+ */
+#define MAXINEFB_IMS332_ADDRESS                  0xbc140000
+
+/*
+ * Begin of DECstation 5000/xx onboard framebuffer memory, default resolution
+ * is 1024x768x8
+ */
+#define DS5000_xx_ONBOARD_FBMEM_START	0xaa000000
+
+/*
+ *      The IMS 332 video controller used in the DECstation 5000/xx series
+ *      uses 32 bits wide registers; the following defines declare the
+ *      register numbers, to get the real offset, these have to be multiplied
+ *      by four.
+ */
+
+#define IMS332_REG_CURSOR_RAM           0x200	/* hardware cursor bitmap */
+
+/*
+ * The color palette entries have the form 0x00BBGGRR
+ */
+#define IMS332_REG_COLOR_PALETTE        0x100	/* color palette, 256 entries */
+#define IMS332_REG_CURSOR_COLOR_PALETTE	0x0a1	/* cursor color palette, */
+						/* 3 entries             */
diff --git a/drivers/video/pmag-ba-fb.c b/drivers/video/pmag-ba-fb.c
index 7987082fc..1ba65e446 100644
--- a/drivers/video/pmag-ba-fb.c
+++ b/drivers/video/pmag-ba-fb.c
@@ -1,5 +1,5 @@
 /*
- *      linux/drivers/video/pmagbafb.c
+ *      linux/drivers/video/pmag-ba-fb.c
  *
  *	PMAG-BA TurboChannel framebuffer card support ... derived from:
  *	"HP300 Topcat framebuffer support (derived from macfb of all things)
@@ -10,9 +10,10 @@
  * 	"PMAG-BA TURBOchannel Color Frame Buffer
  *	 Functional Specification", Revision 1.2, August 27, 1990
  *
- *      DECstation related code Copyright (C) 1999, 2000 by
- *      Michael Engel <engel@unix-ag.org>, Karsten Merker <merker@guug.de>
- *	and Harald Koerfgen <harald@unix-ag.org>.
+ *      DECstation related code Copyright (C) 1999, 2000, 2001 by
+ *      Michael Engel <engel@unix-ag.org>, 
+ *      Karsten Merker <merker@linuxtag.org> and
+ *	Harald Koerfgen <harald@unix-ag.org>.
  *      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.
@@ -33,6 +34,7 @@
 #include <asm/bootinfo.h>
 #include <asm/dec/machtype.h>
 #include <asm/dec/tc.h>
+#include "pmag-ba-fb.h"
 
 #include <video/fbcon.h>
 #include <video/fbcon-mfb.h>
@@ -42,18 +44,7 @@
 
 #define arraysize(x)    (sizeof(x)/sizeof(*(x)))
 
-/*
- * Bt459 RAM DAC register base offset (rel. to TC slot base address)
- */
-#define BT459_OFFSET			0x00200000
-
-/*
- * Begin of DECstation 5000/xx onboard framebuffer memory, resolution
- * is 1024x864x8
- */
-#define PMAG_BA_ONBOARD_FBMEM_OFFSET	0x00000000
-
-struct ramdac_regs {
+struct pmag_ba_ramdac_regs {
 	unsigned char addr_low;
 	unsigned char pad0[3];
 	unsigned char addr_hi;
@@ -63,9 +54,9 @@ struct ramdac_regs {
 	unsigned char cmap;
 };
 
-struct my_fb_info {
+struct pmag_ba_my_fb_info {
 	struct fb_info info;
-	struct ramdac_regs *bt459_regs;
+	struct pmag_ba_ramdac_regs *bt459_regs;
 	unsigned long pmagba_fb_start;
 	unsigned long pmagba_fb_size;
 	unsigned long pmagba_fb_line_length;
@@ -75,7 +66,7 @@ static struct display disp;
 /*
  * Max 3 TURBOchannel slots -> max 3 PMAG-BA :)
  */
-static struct my_fb_info pmagba_fb_info[3];
+static struct pmag_ba_my_fb_info pmagba_fb_info[3];
 
 static struct fb_var_screeninfo pmagbafb_defined = {
 	0, 0, 0, 0,		/* W,H, W, H (virtual) load xres,xres_virtual */
@@ -157,7 +148,7 @@ static int pmagba_do_fb_set_var(struct fb_var_screeninfo *var,
 /*
  * Turn hardware cursor off
  */
-void pmagbafb_erase_cursor(struct my_fb_info *info)
+void pmagbafb_erase_cursor(struct pmag_ba_my_fb_info *info)
 {
 	info->bt459_regs->addr_low = 0;
 	info->bt459_regs->addr_hi = 3;
@@ -167,8 +158,8 @@ void pmagbafb_erase_cursor(struct my_fb_info *info)
 /*
  * Write to a Bt459 color map register
  */
-void bt459_write_colormap(struct my_fb_info *info,
-			  int reg, __u8 red, __u8 green, __u8 blue)
+void pmag_ba_bt459_write_colormap(struct pmag_ba_my_fb_info *info,
+				  int reg, __u8 red, __u8 green, __u8 blue)
 {
 	info->bt459_regs->addr_low = (__u8) reg;
 	info->bt459_regs->addr_hi = 0;
@@ -193,9 +184,9 @@ static int pmagbafb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
 		length = cmap->len;
 	}
 	for (i = 0; i < length; i++) {
-	/*
-	 * TODO
-	 */
+		/*
+		 * TODO
+		 */
 	}
 	return 0;
 }
@@ -220,9 +211,10 @@ static int pmagbafb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
 		cmap_green = ((cmap->green[i]) >> 8);	/* wide, but the harware colormap */
 		cmap_blue = ((cmap->blue[i]) >> 8);	/* registers are only 8 bits wide */
 
-		bt459_write_colormap((struct my_fb_info *) info,
-				     cmap->start + i, cmap_red, cmap_green,
-				     cmap_blue);
+		pmag_ba_bt459_write_colormap((struct pmag_ba_my_fb_info *)
+					     info, cmap->start + i,
+					     cmap_red, cmap_green,
+					     cmap_blue);
 	}
 	return 0;
 }
@@ -252,14 +244,11 @@ static int pmagbafb_set_var(struct fb_var_screeninfo *var, int con,
 
 static void pmagbafb_encode_fix(struct fb_fix_screeninfo *fix,
 				struct pmagbafb_par *par,
-				struct my_fb_info *info)
+				struct pmag_ba_my_fb_info *info)
 {
 	memset(fix, 0, sizeof(struct fb_fix_screeninfo));
 	strcpy(fix->id, "PMAG-BA");
 
-	/*
-	 * X works, but screen wraps ... 
-	 */
 	fix->smem_start = info->pmagba_fb_start;
 	fix->smem_len = info->pmagba_fb_size;
 	fix->type = FB_TYPE_PACKED_PIXELS;
@@ -274,10 +263,10 @@ static int pmagbafb_get_fix(struct fb_fix_screeninfo *fix, int con,
 			    struct fb_info *info)
 {
 	struct pmagbafb_par par;
-	
+
 	pmagbafb_get_par(&par);
-	pmagbafb_encode_fix(fix, &par, (struct my_fb_info *) info);
-	
+	pmagbafb_encode_fix(fix, &par, (struct pmag_ba_my_fb_info *) info);
+
 	return 0;
 }
 
@@ -293,7 +282,7 @@ static int pmagbafb_switch(int con, struct fb_info *info)
 {
 	pmagba_do_fb_set_var(&fb_display[con].var, 1);
 	currcon = con;
-	
+
 	return 0;
 }
 
@@ -313,7 +302,7 @@ static int pmagbafb_open(struct fb_info *info, int user)
 	return (0);
 }
 
-static void pmagbafb_set_disp(int con, struct my_fb_info *info)
+static void pmagbafb_set_disp(int con, struct pmag_ba_my_fb_info *info)
 {
 	struct fb_fix_screeninfo fix;
 	struct display *display;
@@ -346,31 +335,33 @@ static int pmagbafb_release(struct fb_info *info, int user)
 }
 
 static struct fb_ops pmagbafb_ops = {
-	owner: THIS_MODULE,
-	fb_open: pmagbafb_open,
-	fb_release: pmagbafb_release,
-	fb_get_fix: pmagbafb_get_fix,
-	fb_get_var: pmagbafb_get_var,
-	fb_set_var: pmagbafb_set_var,
-	fb_get_cmap: pmagbafb_get_cmap,
-	fb_set_cmap: pmagbafb_set_cmap,
-	fb_ioctl: pmagbafb_ioctl,
-	fb_mmap: 0,
-	fb_rasterimg: 0
+	owner:THIS_MODULE,
+	fb_open:pmagbafb_open,
+	fb_release:pmagbafb_release,
+	fb_get_fix:pmagbafb_get_fix,
+	fb_get_var:pmagbafb_get_var,
+	fb_set_var:pmagbafb_set_var,
+	fb_get_cmap:pmagbafb_get_cmap,
+	fb_set_cmap:pmagbafb_set_cmap,
+	fb_ioctl:pmagbafb_ioctl,
+	fb_mmap:0,
+	fb_rasterimg:0
 };
 
 int __init pmagbafb_init_one(int slot)
 {
 	unsigned long base_addr = get_tc_base_addr(slot);
-	struct my_fb_info *ip =
-	    (struct my_fb_info *) &pmagba_fb_info[slot];
+	struct pmag_ba_my_fb_info *ip =
+	    (struct pmag_ba_my_fb_info *) &pmagba_fb_info[slot];
 
 	printk("PMAG-BA framebuffer in slot %d\n", slot);
 
 	/*
 	 * Framebuffer display memory base address and friends
 	 */
-	ip->bt459_regs = (struct ramdac_regs *) (base_addr + BT459_OFFSET);
+	ip->bt459_regs =
+	    (struct pmag_ba_ramdac_regs *) (base_addr +
+					    PMAG_BA_BT459_OFFSET);
 	ip->pmagba_fb_start = base_addr + PMAG_BA_ONBOARD_FBMEM_OFFSET;
 	ip->pmagba_fb_size = 1024 * 864;
 	ip->pmagba_fb_line_length = 1024;
diff --git a/drivers/video/pmagb-b-fb.c b/drivers/video/pmagb-b-fb.c
new file mode 100644
index 000000000..3b642b173
--- /dev/null
+++ b/drivers/video/pmagb-b-fb.c
@@ -0,0 +1,434 @@
+/*
+ *      linux/drivers/video/pmagb-b-fb.c
+ *
+ *	PMAGB-B TurboChannel framebuffer card support ... derived from:
+ *	"HP300 Topcat framebuffer support (derived from macfb of all things)
+ *	Phil Blundell <philb@gnu.org> 1998", the original code can be
+ *      found in the file hpfb.c in the same directory.
+ *
+ *      DECstation related code Copyright (C) 1999, 2000, 2001 by
+ *      Michael Engel <engel@unix-ag.org>,
+ *      Karsten Merker <merker@linuxtag.org> and 
+ *	Harald Koerfgen <harald@unix-ag.org>.
+ *      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.
+ *
+ */
+
+/*
+ *      We currently only support the PMAGB-B in high resolution mode
+ *      as I know of no way to detect low resolution mode set via jumper.
+ *      KM, 2001/01/07
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/malloc.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/fb.h>
+#include <asm/bootinfo.h>
+#include <asm/dec/machtype.h>
+#include <asm/dec/tc.h>
+#include "pmagb-b-fb.h"
+
+#include <video/fbcon.h>
+#include <video/fbcon-mfb.h>
+#include <video/fbcon-cfb2.h>
+#include <video/fbcon-cfb4.h>
+#include <video/fbcon-cfb8.h>
+
+#define arraysize(x)    (sizeof(x)/sizeof(*(x)))
+
+struct pmagb_b_ramdac_regs {
+	unsigned char addr_low;
+	unsigned char pad0[3];
+	unsigned char addr_hi;
+	unsigned char pad1[3];
+	unsigned char data;
+	unsigned char pad2[3];
+	unsigned char cmap;
+};
+
+struct pmagb_b_my_fb_info {
+	struct fb_info info;
+	struct pmagb_b_ramdac_regs *bt459_regs;
+	unsigned long pmagbb_fb_start;
+	unsigned long pmagbb_fb_size;
+	unsigned long pmagbb_fb_line_length;
+};
+
+static struct display disp;
+/*
+ * Max 3 TURBOchannel slots -> max 3 PMAGB-B :)
+ */
+static struct pmagb_b_my_fb_info pmagbb_fb_info[3];
+
+static struct fb_var_screeninfo pmagbbfb_defined = {
+	0, 0, 0, 0,		/* W,H, W, H (virtual) load xres,xres_virtual */
+	0, 0,			/* virtual -> visible no offset */
+	0,			/* depth -> load bits_per_pixel */
+	0,			/* greyscale ? */
+	{0, 0, 0},		/* R */
+	{0, 0, 0},		/* G */
+	{0, 0, 0},		/* B */
+	{0, 0, 0},		/* transparency */
+	0,			/* standard pixel format */
+	FB_ACTIVATE_NOW,
+	274, 195,		/* 14" monitor */
+	FB_ACCEL_NONE,
+	0L, 0L, 0L, 0L, 0L,
+	0L, 0L, 0,		/* No sync info */
+	FB_VMODE_NONINTERLACED,
+	{0, 0, 0, 0, 0, 0}
+};
+
+struct pmagbbfb_par {
+};
+
+static int currcon = 0;
+struct pmagbbfb_par current_par;
+
+static void pmagbbfb_encode_var(struct fb_var_screeninfo *var,
+				struct pmagbbfb_par *par)
+{
+	int i = 0;
+	var->xres = 1280;
+	var->yres = 1024;
+	var->xres_virtual = 1280;
+	var->yres_virtual = 1024;
+	var->xoffset = 0;
+	var->yoffset = 0;
+	var->bits_per_pixel = 8;
+	var->grayscale = 0;
+	var->transp.offset = 0;
+	var->transp.length = 0;
+	var->transp.msb_right = 0;
+	var->nonstd = 0;
+	var->activate = 1;
+	var->height = -1;
+	var->width = -1;
+	var->vmode = FB_VMODE_NONINTERLACED;
+	var->pixclock = 0;
+	var->sync = 0;
+	var->left_margin = 0;
+	var->right_margin = 0;
+	var->upper_margin = 0;
+	var->lower_margin = 0;
+	var->hsync_len = 0;
+	var->vsync_len = 0;
+	for (i = 0; i < arraysize(var->reserved); i++)
+		var->reserved[i] = 0;
+}
+
+static void pmagbbfb_get_par(struct pmagbbfb_par *par)
+{
+	*par = current_par;
+}
+
+static int pmagbb_fb_update_var(int con, struct fb_info *info)
+{
+	return 0;
+}
+
+static int pmagbb_do_fb_set_var(struct fb_var_screeninfo *var,
+				int isactive)
+{
+	struct pmagbbfb_par par;
+
+	pmagbbfb_get_par(&par);
+	pmagbbfb_encode_var(var, &par);
+	return 0;
+}
+
+/*
+ * Turn hardware cursor off
+ */
+void pmagbbfb_erase_cursor(struct pmagb_b_my_fb_info *info)
+{
+	info->bt459_regs->addr_low = 0;
+	info->bt459_regs->addr_hi = 3;
+	info->bt459_regs->data = 0;
+}
+
+/*
+ * Write to a Bt459 color map register
+ */
+void pmagb_b_bt459_write_colormap(struct pmagb_b_my_fb_info *info,
+				  int reg, __u8 red, __u8 green, __u8 blue)
+{
+	info->bt459_regs->addr_low = (__u8) reg;
+	info->bt459_regs->addr_hi = 0;
+	info->bt459_regs->cmap = red;
+	info->bt459_regs->cmap = green;
+	info->bt459_regs->cmap = blue;
+}
+
+/*
+ * Get the palette
+ */
+
+static int pmagbbfb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
+			     struct fb_info *info)
+{
+	unsigned int i;
+	unsigned int length;
+
+	if (((cmap->start) + (cmap->len)) >= 256) {
+		length = 256 - (cmap->start);
+	} else {
+		length = cmap->len;
+	}
+	for (i = 0; i < length; i++) {
+		/*
+		 * TODO
+		 */
+	}
+	return 0;
+}
+
+/*
+ * Set the palette. 
+ */
+static int pmagbbfb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
+			     struct fb_info *info)
+{
+	unsigned int i;
+	__u8 cmap_red, cmap_green, cmap_blue;
+	unsigned int length;
+
+	if (((cmap->start) + (cmap->len)) >= 256)
+		length = 256 - (cmap->start);
+	else
+		length = cmap->len;
+
+	for (i = 0; i < length; i++) {
+		cmap_red = ((cmap->red[i]) >> 8);	/* The cmap fields are 16 bits    */
+		cmap_green = ((cmap->green[i]) >> 8);	/* wide, but the harware colormap */
+		cmap_blue = ((cmap->blue[i]) >> 8);	/* registers are only 8 bits wide */
+
+		pmagb_b_bt459_write_colormap((struct pmagb_b_my_fb_info *)
+					     info, cmap->start + i,
+					     cmap_red, cmap_green,
+					     cmap_blue);
+	}
+	return 0;
+}
+
+static int pmagbbfb_get_var(struct fb_var_screeninfo *var, int con,
+			    struct fb_info *info)
+{
+	struct pmagbbfb_par par;
+	if (con == -1) {
+		pmagbbfb_get_par(&par);
+		pmagbbfb_encode_var(var, &par);
+	} else
+		*var = fb_display[con].var;
+	return 0;
+}
+
+
+static int pmagbbfb_set_var(struct fb_var_screeninfo *var, int con,
+			    struct fb_info *info)
+{
+	int err;
+
+	if ((err = pmagbb_do_fb_set_var(var, 1)))
+		return err;
+	return 0;
+}
+
+static void pmagbbfb_encode_fix(struct fb_fix_screeninfo *fix,
+				struct pmagbbfb_par *par,
+				struct pmagb_b_my_fb_info *info)
+{
+	memset(fix, 0, sizeof(struct fb_fix_screeninfo));
+	strcpy(fix->id, "PMAGB-BA");
+
+	fix->smem_start = info->pmagbb_fb_start;
+	fix->smem_len = info->pmagbb_fb_size;
+	fix->type = FB_TYPE_PACKED_PIXELS;
+	fix->visual = FB_VISUAL_PSEUDOCOLOR;
+	fix->xpanstep = 0;
+	fix->ypanstep = 0;
+	fix->ywrapstep = 0;
+	fix->line_length = info->pmagbb_fb_line_length;
+}
+
+static int pmagbbfb_get_fix(struct fb_fix_screeninfo *fix, int con,
+			    struct fb_info *info)
+{
+	struct pmagbbfb_par par;
+
+	pmagbbfb_get_par(&par);
+	pmagbbfb_encode_fix(fix, &par, (struct pmagb_b_my_fb_info *) info);
+
+	return 0;
+}
+
+
+static int pmagbbfb_ioctl(struct inode *inode, struct file *file,
+			  unsigned int cmd, unsigned long arg, int con,
+			  struct fb_info *info)
+{
+	return -EINVAL;
+}
+
+static int pmagbbfb_switch(int con, struct fb_info *info)
+{
+	pmagbb_do_fb_set_var(&fb_display[con].var, 1);
+	currcon = con;
+
+	return 0;
+}
+
+/* 0 unblank, 1 blank, 2 no vsync, 3 no hsync, 4 off */
+
+static void pmagbbfb_blank(int blank, struct fb_info *info)
+{
+	/* Not supported */
+}
+
+static int pmagbbfb_open(struct fb_info *info, int user)
+{
+	/*
+	 * Nothing, only a usage count for the moment
+	 */
+	MOD_INC_USE_COUNT;
+	return (0);
+}
+
+static void pmagbbfb_set_disp(int con, struct pmagb_b_my_fb_info *info)
+{
+	struct fb_fix_screeninfo fix;
+	struct display *display;
+
+	if (con >= 0)
+		display = &fb_display[con];
+	else
+		display = &disp;	/* used during initialization */
+
+	pmagbbfb_get_fix(&fix, con, (struct fb_info *) info);
+
+	display->screen_base = (char *) fix.smem_start;
+	display->visual = fix.visual;
+	display->type = fix.type;
+	display->type_aux = fix.type_aux;
+	display->ypanstep = fix.ypanstep;
+	display->ywrapstep = fix.ywrapstep;
+	display->line_length = fix.line_length;
+	display->next_line = fix.line_length;
+	display->can_soft_blank = 0;
+	display->inverse = 0;
+
+	display->dispsw = &fbcon_cfb8;
+}
+
+static int pmagbbfb_release(struct fb_info *info, int user)
+{
+	MOD_DEC_USE_COUNT;
+	return (0);
+}
+
+static struct fb_ops pmagbbfb_ops = {
+	owner:THIS_MODULE,
+	fb_open:pmagbbfb_open,
+	fb_release:pmagbbfb_release,
+	fb_get_fix:pmagbbfb_get_fix,
+	fb_get_var:pmagbbfb_get_var,
+	fb_set_var:pmagbbfb_set_var,
+	fb_get_cmap:pmagbbfb_get_cmap,
+	fb_set_cmap:pmagbbfb_set_cmap,
+	fb_ioctl:pmagbbfb_ioctl,
+	fb_mmap:0,
+	fb_rasterimg:0
+};
+
+int __init pmagbbfb_init_one(int slot)
+{
+	unsigned long base_addr = get_tc_base_addr(slot);
+	struct pmagb_b_my_fb_info *ip =
+	    (struct pmagb_b_my_fb_info *) &pmagbb_fb_info[slot];
+
+	printk("PMAGB-BA framebuffer in slot %d\n", slot);
+
+	/*
+	 * Framebuffer display memory base address and friends
+	 */
+	ip->bt459_regs =
+	    (struct pmagb_b_ramdac_regs *) (base_addr +
+					    PMAGB_B_BT459_OFFSET);
+	ip->pmagbb_fb_start = base_addr + PMAGB_B_ONBOARD_FBMEM_OFFSET;
+	ip->pmagbb_fb_size = 1280 * 1024;
+	ip->pmagbb_fb_line_length = 1280;
+
+	/*
+	 * Configure the Bt459 RAM DAC
+	 */
+	pmagbbfb_erase_cursor(ip);
+
+	/*
+	 *      Fill in the available video resolution
+	 */
+
+	pmagbbfb_defined.xres = 1280;
+	pmagbbfb_defined.yres = 1024;
+	pmagbbfb_defined.xres_virtual = 1280;
+	pmagbbfb_defined.yres_virtual = 1024;
+	pmagbbfb_defined.bits_per_pixel = 8;
+
+	/*
+	 *      Let there be consoles..
+	 */
+	strcpy(ip->info.modename, "PMAGB-BA");
+	ip->info.changevar = NULL;
+	ip->info.node = -1;
+	ip->info.fbops = &pmagbbfb_ops;
+	ip->info.disp = &disp;
+	ip->info.switch_con = &pmagbbfb_switch;
+	ip->info.updatevar = &pmagbb_fb_update_var;
+	ip->info.blank = &pmagbbfb_blank;
+	ip->info.flags = FBINFO_FLAG_DEFAULT;
+
+	pmagbb_do_fb_set_var(&pmagbbfb_defined, 1);
+	pmagbbfb_get_var(&disp.var, -1, (struct fb_info *) ip);
+	pmagbbfb_set_disp(-1, ip);
+
+	if (register_framebuffer((struct fb_info *) ip) < 0)
+		return 1;
+
+	return 0;
+}
+
+/* 
+ * Initialise the framebuffer
+ */
+
+int __init pmagbbfb_init(void)
+{
+	int sid;
+	int found = 0;
+
+	if (TURBOCHANNEL) {
+		while ((sid = search_tc_card("PMAGB-BA")) >= 0) {
+			found = 1;
+			claim_tc_card(sid);
+			pmagbbfb_init_one(sid);
+		}
+		return found ? 0 : -ENODEV;
+	} else {
+		return -ENODEV;
+	}
+}
+
+int __init pmagbbfb_setup(char *options)
+{
+	return 0;
+}
diff --git a/drivers/video/pmagb-b-fb.h b/drivers/video/pmagb-b-fb.h
new file mode 100644
index 000000000..e93eafa49
--- /dev/null
+++ b/drivers/video/pmagb-b-fb.h
@@ -0,0 +1,32 @@
+/*
+ *      linux/drivers/video/pmagb-b-fb.h
+ *
+ *      TurboChannel PMAGB-B framebuffer card support,
+ *      Copyright (C) 1999, 2000, 2001 by
+ *      Michael Engel <engel@unix-ag.org> and 
+ *      Karsten Merker <merker@linxutag.org>
+ *      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.
+ */
+
+
+/*
+ * Bt459 RAM DAC register base offset (rel. to TC slot base address)
+ */
+#define PMAGB_B_BT459_OFFSET			0x001C0000
+
+/*
+ * Begin of PMAGB-B framebuffer memory, resolution is configurable:
+ * 1024x864x8 or 1280x1024x8, settable by jumper on the card
+ */
+#define PMAGB_B_ONBOARD_FBMEM_OFFSET	0x00201000
+
+/*
+ * Bt459 register offsets, byte-wide registers
+ */
+
+#define BT459_ADR_LOW			BT459_OFFSET + 0x00	/* addr. low */
+#define BT459_ADR_HIGH			BT459_OFFSET + 0x04	/* addr. high */
+#define BT459_DATA			BT459_OFFSET + 0x08	/* r/w data */
+#define BT459_CMAP			BT459_OFFSET + 0x0C	/* color map */
-- 
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