Upgrade to 2.1.73.

16 files changed, 6805 insertions, 2 deletions

diff --git a/drivers/sgi/char/Makefile b/drivers/sgi/char/Makefile
index 7032c700c..3ccaafd9e 100644
--- a/drivers/sgi/char/Makefile
+++ b/drivers/sgi/char/Makefile
@@ -16,3 +16,21 @@ ifeq ($(CONFIG_SGI_SERIAL),y)
 endif
 
 include $(TOPDIR)/Rules.make
+#
+# Makefile for the linux kernel.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definitions are now in the main makefile...
+
+O_TARGET := sgichar.o
+O_OBJS   := graphics.o streamable.o newport.o cons_newport.o sgicons.o \
+	vga_font.o rrm.o shmiq.o usema.o
+
+ifeq ($(CONFIG_SGI_SERIAL),y)
+  O_OBJS += sgiserial.o
+endif
+
+include $(TOPDIR)/Rules.make
diff --git a/drivers/sgi/char/cons_newport.c b/drivers/sgi/char/cons_newport.c
index 91212c0ae..30aa1f3b7 100644
--- a/drivers/sgi/char/cons_newport.c
+++ b/drivers/sgi/char/cons_newport.c
@@ -3,7 +3,618 @@
  *
  * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
  *
- * $Id: cons_newport.c,v 1.5 1997/09/12 01:32:50 ralf Exp $
+ * $Id: cons_newport.c,v 1.1 1997/12/02 02:28:23 ralf Exp $
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/kd.h>
+#include <linux/tty.h>
+#include <linux/malloc.h>
+#include <linux/major.h>
+#include <linux/mm.h>
+#include <linux/version.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/bitops.h>
+#include <asm/sgialib.h>
+#include <asm/ptrace.h>
+
+#include <linux/kbd_kern.h>
+#include <linux/vt_kern.h>
+#include <linux/consolemap.h>
+#include <linux/selection.h>
+#include <linux/console_struct.h>
+
+#include "gconsole.h"
+#include "newport.h"
+#include "graphics.h" /* Just for now */
+#include <asm/gfx.h>
+#include <asm/ng1.h>
+
+#if 0
+#include "linux_logo.h"
+#endif
+
+#define BMASK(c) (c << 24)
+
+#define RENDER(regs, cp) do { \
+(regs)->go.zpattern = BMASK((cp)[0x0]); (regs)->go.zpattern = BMASK((cp)[0x1]); \
+(regs)->go.zpattern = BMASK((cp)[0x2]); (regs)->go.zpattern = BMASK((cp)[0x3]); \
+(regs)->go.zpattern = BMASK((cp)[0x4]); (regs)->go.zpattern = BMASK((cp)[0x5]); \
+(regs)->go.zpattern = BMASK((cp)[0x6]); (regs)->go.zpattern = BMASK((cp)[0x7]); \
+(regs)->go.zpattern = BMASK((cp)[0x8]); (regs)->go.zpattern = BMASK((cp)[0x9]); \
+(regs)->go.zpattern = BMASK((cp)[0xa]); (regs)->go.zpattern = BMASK((cp)[0xb]); \
+(regs)->go.zpattern = BMASK((cp)[0xc]); (regs)->go.zpattern = BMASK((cp)[0xd]); \
+(regs)->go.zpattern = BMASK((cp)[0xe]); (regs)->go.zpattern = BMASK((cp)[0xf]); \
+} while(0)        
+
+#define REVERSE_RENDER(regs, cp) do { \
+(regs)->go.zpattern = BMASK((~(cp)[0x0])); (regs)->go.zpattern = BMASK((~(cp)[0x1])); \
+(regs)->go.zpattern = BMASK((~(cp)[0x2])); (regs)->go.zpattern = BMASK((~(cp)[0x3])); \
+(regs)->go.zpattern = BMASK((~(cp)[0x4])); (regs)->go.zpattern = BMASK((~(cp)[0x5])); \
+(regs)->go.zpattern = BMASK((~(cp)[0x6])); (regs)->go.zpattern = BMASK((~(cp)[0x7])); \
+(regs)->go.zpattern = BMASK((~(cp)[0x8])); (regs)->go.zpattern = BMASK((~(cp)[0x9])); \
+(regs)->go.zpattern = BMASK((~(cp)[0xa])); (regs)->go.zpattern = BMASK((~(cp)[0xb])); \
+(regs)->go.zpattern = BMASK((~(cp)[0xc])); (regs)->go.zpattern = BMASK((~(cp)[0xd])); \
+(regs)->go.zpattern = BMASK((~(cp)[0xe])); (regs)->go.zpattern = BMASK((~(cp)[0xf])); \
+} while(0)        
+
+extern int default_red[16], default_grn[16], default_blu[16];
+extern unsigned char video_type;
+
+static int cursor_pos = -1;
+struct newport_regs *npregs;
+
+#define TESTVAL 0xdeadbeef
+#define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11)
+
+static inline void
+newport_disable_video(void)
+{
+	unsigned short treg;
+
+	treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+	newport_vc2_set(npregs, VC2_IREG_CONTROL, (treg & ~(VC2_CTRL_EVIDEO)));
+}
+
+static inline void
+newport_enable_video(void)
+{
+	unsigned short treg;
+
+	treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+	newport_vc2_set(npregs, VC2_IREG_CONTROL, (treg | VC2_CTRL_EVIDEO));
+}
+
+static inline void
+newport_disable_cursor(void)
+{
+	unsigned short treg;
+
+	treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+	newport_vc2_set(npregs, VC2_IREG_CONTROL, (treg & ~(VC2_CTRL_ECDISP)));
+}
+
+#if 0
+static inline void
+newport_enable_cursor(void)
+{
+	unsigned short treg;
+
+	treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+	newport_vc2_set(npregs, VC2_IREG_CONTROL, (treg | VC2_CTRL_ECDISP));
+}
+#endif
+
+static inline void
+newport_init_cmap(void)
+{
+	unsigned short i;
+
+	for(i = 0; i < 16; i++) {
+		newport_bfwait();
+		newport_cmap_setaddr(npregs, color_table[i]);
+		newport_cmap_setrgb(npregs,
+				    default_red[i],
+				    default_grn[i],
+				    default_blu[i]);
+	}
+}
+
+#if 0
+static inline void
+newport_init_cursor(void)
+{
+	unsigned char cursor[256];
+	unsigned short *cookie;
+	int i;
+
+	for(i = 0; i < 256; i++)
+		cursor[i] = 0x0;
+	for(i = 211; i < 256; i+=4) {
+		cursor[i] = 0xff;
+#if 0
+		cursor[(i + 128) << 2] = 0xff;
+		cursor[((i + 128) << 2) + 1] = 0xff;
+#endif
+	}
+
+	/* Load the SRAM on the VC2 for this new GLYPH. */
+	cookie = (unsigned short *) cursor;
+	newport_vc2_set(npregs, VC2_IREG_RADDR, VC2_CGLYPH_ADDR);
+	npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+			       NPORT_DMODE_W2 | VC2_PROTOCOL);
+	for(i = 0; i < 128; i++) {
+		newport_bfwait();
+		npregs->set.dcbdata0.hwords.s1 = *cookie++;
+	}
+
+	/* Place the cursor at origin. */
+	newport_vc2_set(npregs, VC2_IREG_CURSX, 0);
+	newport_vc2_set(npregs, VC2_IREG_CURSY, 0);
+	newport_enable_cursor();
+}
+#endif
+
+static inline void
+newport_clear_screen(void)
+{
+	newport_wait();
+	npregs->set.wrmask = 0xffffffff;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+			      NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX |
+			      NPORT_DMODE0_STOPY);
+	npregs->set.colori = 0;
+	npregs->set.xystarti = 0;
+	npregs->go.xyendi = (((1280 + 63) << 16)|(1024));
+	newport_bfwait();
+}
+
+static inline void
+newport_render_version(void)
+{
+#if 0
+	unsigned short *ush;
+	int currcons = 0;
+	char *p;
+
+	ush = (unsigned short *) video_mem_base + video_num_columns * 2 + 20;
+	for (p = "SGI/Linux version " UTS_RELEASE; *p; p++, ush++) {
+		*ush = (attr << 8) + *p;
+		newport_blitc (*ush, (unsigned long) ush);
+	}
+#endif
+}
+
+#if 0
+static inline void
+newport_render_logo(void)
+{
+	int i, xpos, ypos;
+	unsigned char *bmap;
+
+	xpos = 8;
+	ypos = 18;
+
+	newport_wait();
+	npregs->set.colori = 9;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+			      NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+			      NPORT_DMODE0_L32);
+
+	for(i = 0; i < 80; i+=8) {
+		/* Set coordinates for bitmap operation. */
+		npregs->set.xystarti = ((xpos + i) << 16) | ypos;
+		npregs->set.xyendi = (((xpos + i) + 7) << 16);
+		newport_wait();
+
+		bmap = linux_logo + (i * 80);
+		RENDER(npregs, bmap); bmap += 0x10;
+		RENDER(npregs, bmap); bmap += 0x10;
+		RENDER(npregs, bmap); bmap += 0x10;
+		RENDER(npregs, bmap); bmap += 0x10;
+		RENDER(npregs, bmap);
+	}
+	prom_getchar();
+	prom_imode();
+}
+#endif
+
+static inline void
+newport_render_background(int xpos, int ypos, int ci)
+{
+	newport_wait();
+	npregs->set.wrmask = 0xffffffff;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+			      NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX |
+			      NPORT_DMODE0_STOPY);
+	npregs->set.colori = ci;
+	npregs->set.xystarti = (xpos << 16) | ypos;
+	npregs->go.xyendi = ((xpos + 7) << 16) | (ypos + 15);
+}
+
+void
+newport_set_origin(unsigned short offset)
+{
+	/* maybe this works... */
+	__origin = offset;
+}
+
+void
+newport_hide_cursor(void)
+{
+	int xpos, ypos, idx;
+	unsigned long flags;
+
+	if(vt_cons[fg_console]->vc_mode == KD_GRAPHICS)
+		return;
+	save_and_cli(flags);
+
+	idx = cursor_pos;
+	if(idx == -1) {
+		restore_flags(flags);
+		return;
+	}
+	xpos = 8 + ((idx % video_num_columns) << 3);
+	ypos = 18 + ((idx / video_num_columns) << 4);
+	newport_render_background(xpos, ypos, 0);
+	restore_flags(flags);
+}
+
+void
+newport_set_cursor(int currcons)
+{
+	int xpos, ypos, idx, oldpos;
+	unsigned short *sp, *osp, cattr;
+	unsigned long flags;
+	unsigned char *p;
+
+	if (currcons != fg_console || console_blanked || vcmode == KD_GRAPHICS)
+		return;
+
+	if (__real_origin != __origin)
+		__set_origin(__real_origin);
+
+	save_and_cli(flags);
+
+	idx = (pos - video_mem_base) >> 1;
+	sp = (unsigned short *) pos;
+	oldpos = cursor_pos;
+	cursor_pos = idx;
+	if(!deccm) {
+		hide_cursor();
+		restore_flags(flags);
+		return;
+	}
+	xpos = 8 + ((idx % video_num_columns) << 3);
+	ypos = 18 + ((idx / video_num_columns) << 4);
+	if(oldpos != -1) {
+		int oxpos, oypos;
+
+		/* Restore old location. */
+		osp = (unsigned short *) ((oldpos << 1) + video_mem_base);
+		oxpos = 8 + ((oldpos % video_num_columns) << 3);
+		oypos = 18 + ((oldpos / video_num_columns) << 4);
+		cattr = *osp;
+		newport_render_background(oxpos, oypos, (cattr & 0xf000) >> 12);
+		p = &vga_font[(cattr & 0xff) << 4];
+		newport_wait();
+		npregs->set.colori = (cattr & 0x0f00) >> 8;
+		npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+				      NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+				      NPORT_DMODE0_L32);
+		npregs->set.xystarti = (oxpos << 16) | oypos;
+		npregs->set.xyendi = ((oxpos + 7) << 16);
+		newport_wait();
+		RENDER(npregs, p);
+	}
+	cattr = *sp;
+	newport_render_background(xpos, ypos, (cattr & 0xf000) >> 12);
+	p = &vga_font[(cattr & 0xff) << 4];
+	newport_wait();
+	npregs->set.colori = (cattr & 0x0f00) >> 8;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+			      NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+			      NPORT_DMODE0_L32);
+	npregs->set.xystarti = (xpos << 16) | ypos;
+	npregs->set.xyendi = ((xpos + 7) << 16);
+	newport_wait();
+	REVERSE_RENDER(npregs, p);
+	restore_flags (flags);
+	return;
+}
+
+void
+newport_get_scrmem(int currcons)
+{
+	memcpyw((unsigned short *)vc_scrbuf[currcons],
+		(unsigned short *)origin, video_screen_size);
+	origin = video_mem_start = (unsigned long)vc_scrbuf[currcons];
+	scr_end = video_mem_end = video_mem_start + video_screen_size;
+	pos = origin + y*video_size_row + (x<<1);
+}
+
+void
+newport_set_scrmem(int currcons, long offset)
+{
+	if (video_mem_term - video_mem_base < offset + video_screen_size)
+		offset = 0;
+	memcpyw((unsigned short *)(video_mem_base + offset),
+		(unsigned short *) origin, video_screen_size);
+	video_mem_start = video_mem_base;
+	video_mem_end = video_mem_term;
+	origin = video_mem_base + offset;
+	scr_end = origin + video_screen_size;
+	pos = origin + y*video_size_row + (x<<1);
+	has_wrapped = 0;
+}
+
+int
+newport_set_get_cmap(unsigned char * arg, int set)
+{
+	unsigned short ent;
+	int i;
+
+	i = verify_area(set ? VERIFY_READ : VERIFY_WRITE, (void *)arg, 16*3);
+	if (i)
+		return i;
+
+	for (i=0; i<16; i++) {
+		if (set) {
+			__get_user(default_red[i], arg++);
+			__get_user(default_grn[i], arg++);
+			__get_user(default_blu[i], arg++);
+		} else {
+			__put_user (default_red[i], arg++);
+			__put_user (default_grn[i], arg++);
+			__put_user (default_blu[i], arg++);
+		}
+	}
+	if (set) {
+		for (i=0; i<MAX_NR_CONSOLES; i++) {
+			if (vc_cons_allocated(i)) {
+				int j, k;
+				for (j = k = 0; j<16; j++) {
+					vc_cons[i].d->vc_palette[k++] =
+						default_red[j];
+					vc_cons[i].d->vc_palette[k++] =
+						default_grn[j];
+					vc_cons[i].d->vc_palette[k++] =
+						default_blu[j];
+				}
+			}
+		}
+		if(console_blanked || vt_cons[fg_console]->vc_mode == KD_GRAPHICS)
+			return 0;
+		for(ent = 0; ent < 16; ent++) {
+			newport_bfwait();
+			newport_cmap_setaddr(npregs, ent);
+			newport_cmap_setrgb(npregs,
+					    default_red[ent],
+					    default_grn[ent],
+					    default_blu[ent]);
+		}
+	}
+
+	return 0;
+}
+
+void
+newport_blitc(unsigned short charattr, unsigned long addr)
+{
+	int idx, xpos, ypos;
+	unsigned char *p;
+
+	idx = (addr - (video_mem_base + (__origin<<1))) >> 1;
+	xpos = 8 + ((idx % video_num_columns) << 3);
+	ypos = 18 + ((idx / video_num_columns) << 4);
+
+	p = &vga_font[(charattr & 0xff) << 4];
+	charattr = (charattr >> 8) & 0xff;
+
+	newport_render_background(xpos, ypos, (charattr & 0xf0) >> 4);
+
+	/* Set the color and drawing mode. */
+	newport_wait();
+	npregs->set.colori = charattr & 0xf;
+	npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+			      NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+			      NPORT_DMODE0_L32);
+
+	/* Set coordinates for bitmap operation. */
+	npregs->set.xystarti = (xpos << 16) | ypos;
+	npregs->set.xyendi = ((xpos + 7) << 16);
+	newport_wait();
+
+	/* Go, baby, go... */
+	RENDER(npregs, p);
+}
+
+void
+newport_memsetw(void * s, unsigned short c, unsigned int count)
+{
+	unsigned short * addr = (unsigned short *) s;
+
+	count /= 2;
+	if (vt_cons[fg_console]->vc_mode == KD_GRAPHICS) {
+		while (count) {
+			count--;
+			*addr++ = c;
+		}
+		return;
+	}
+	if ((unsigned long) addr + count > video_mem_term ||
+	    (unsigned long) addr < video_mem_base) {
+	    	if ((unsigned long) addr + count <= video_mem_term ||
+	    	    (unsigned long) addr > video_mem_base) {
+			while (count) {
+				count--;
+				*addr++ = c;
+			}
+			return;
+	    	} else {
+			while (count) {
+				count--;
+				scr_writew(c, addr++);
+			}
+		}
+	} else {
+		while (count) {
+			count--;
+			if (*addr != c) {
+				newport_blitc(c, (unsigned long)addr);
+				*addr++ = c;
+			} else
+				addr++;
+		}
+	}
+}
+
+void
+newport_memcpyw(unsigned short *to, unsigned short *from, unsigned int count)
+{
+	if (vt_cons[fg_console]->vc_mode == KD_GRAPHICS) {
+		memcpy(to, from, count);
+		return;
+	}
+	if ((unsigned long) to + count > video_mem_term ||
+	    (unsigned long) to < video_mem_base) {
+	    	if ((unsigned long) to + count <= video_mem_term ||
+	    	    (unsigned long) to > video_mem_base)
+	    	    	memcpy(to, from, count);
+	    	else {
+	    		count /= 2;
+			while (count) {
+				count--;
+				scr_writew(scr_readw(from++), to++);
+			}
+		}
+	} else {
+		count /= 2;
+		while (count) {
+			count--;
+			if (*to != *from) {
+				newport_blitc(*from, (unsigned long)to);
+				*to++ = *from++;
+			} else {
+				from++;
+				to++;
+			}
+		}
+	}
+}
+
+struct console_ops newport_console = {
+	newport_set_origin,
+	newport_hide_cursor,
+	newport_set_cursor,
+	newport_get_scrmem,
+	newport_set_scrmem,
+	newport_set_get_cmap,
+	newport_blitc,
+	newport_memsetw,
+	newport_memcpyw
+};
+
+/* Currently hard-coded values that are the same as those found on my system */
+struct ng1_info newport_board_info = {
+	{ "NG1", "" /* what is the label? */, 1280, 1024, sizeof (struct ng1_info) },
+	6,			/* boardrev */
+	1,			/* rex3rev */
+	0,			/* vc2rev */
+	2,			/* monitor type */
+        0,			/* videoinstalled */
+	3,			/* mcrev */
+	24,			/* bitplanes */
+	0,			/* xmap9rev */
+	2,			/* cmaprev */
+	{ 256, 1280, 1024, 76},	/* ng1_vof_info */
+	13,			/* paneltype */
+	0
+};
+
+void
+newport_reset (void)
+{
+	newport_wait();
+	newport_enable_video();
+
+	/* Init the cursor disappear. */
+	newport_wait();
+#if 0
+	newport_init_cursor();
+#else
+	newport_disable_cursor();
+#endif
+
+	newport_init_cmap();
+
+	/* Clear the screen. */
+	newport_clear_screen();
+}
+
+/* right now the newport does not do anything at all */
+struct graphics_ops newport_graphic_ops = {
+	0,			      /* owner */
+	0,			      /* current user */
+	(void *) &newport_board_info, /* board info */
+	sizeof (struct ng1_info),     /* size of our data structure */
+	0, 0,			      /* g_regs, g_regs_size */
+	newport_save, newport_restore, /* g_save_context, g_restore_context */
+	newport_reset, newport_ioctl /* g_reset_console, g_ioctl */
+};
+
+struct graphics_ops *
+newport_probe (int slot, const char **name)
+{
+	struct newport_regs *p;
+
+	npregs = (struct newport_regs *) (KSEG1 + 0x1f0f0000);
+	
+	p = npregs;
+	p->cset.config = NPORT_CFG_GD0;
+
+	if(newport_wait()) {
+		prom_printf("whoops, timeout, no NEWPORT there?");
+		return 0;
+	}
+
+	p->set.xstarti = TESTVAL; if(p->set._xstart.i != XSTI_TO_FXSTART(TESTVAL)) {
+		prom_printf("newport_probe: read back wrong value ;-(\n");
+		return 0;
+	}
+
+	if (slot == 0){
+		register_gconsole (&newport_console);
+		video_type = VIDEO_TYPE_SGI;
+		can_do_color = 1;
+		*name = "NEWPORT";
+	}
+
+	newport_reset ();
+	newport_render_version();
+#if 0
+	newport_render_logo();
+#endif
+	newport_graphic_ops.g_regs = 0x1f0f0000;
+	newport_graphic_ops.g_regs_size = sizeof (struct newport_regs);
+	return &newport_graphic_ops;
+}
+/*
+ * cons_newport.c: Newport graphics console code for the SGI.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ *
+ * $Id: cons_newport.c,v 1.6 1997/09/21 23:00:01 miguel Exp $
  */
 
 #include <linux/kernel.h>
diff --git a/drivers/sgi/char/gconsole.h b/drivers/sgi/char/gconsole.h
index 7bc9794bb..89fd84f2b 100644
--- a/drivers/sgi/char/gconsole.h
+++ b/drivers/sgi/char/gconsole.h
@@ -31,3 +31,36 @@ extern unsigned char vga_font[];
 
 extern void disable_gconsole (void);
 extern void enable_gconsole (void);
+/*
+ * This is a temporary measure, we should eventually migrate to
+ * Gert's generic graphic console code.
+ */
+
+#define cmapsz 8192
+#define CHAR_HEIGHT  16
+
+struct console_ops {
+	void (*set_origin)(unsigned short offset);
+	void (*hide_cursor)(void);
+	void (*set_cursor)(int currcons);
+	void (*get_scrmem)(int currcons);
+	void (*set_scrmem)(int currcons, long offset);
+	int  (*set_get_cmap)(unsigned char *arg, int set);
+	void (*blitc)(unsigned short charattr, unsigned long addr);
+	void (*memsetw)(void *s, unsigned short c, unsigned int count);
+	void (*memcpyw)(unsigned short *to, unsigned short *from, unsigned int count);
+};
+
+void register_gconsole (struct console_ops *);
+
+/* This points to the system console */
+extern struct console_ops *gconsole;
+
+extern void gfx_init (const char **name);
+
+extern void __set_origin (unsigned short offset);
+extern void hide_cursor (void);
+extern unsigned char vga_font[];
+
+extern void disable_gconsole (void);
+extern void enable_gconsole (void);
diff --git a/drivers/sgi/char/graphics.c b/drivers/sgi/char/graphics.c
index b7e69b243..9d55e4867 100644
--- a/drivers/sgi/char/graphics.c
+++ b/drivers/sgi/char/graphics.c
@@ -325,3 +325,330 @@ gfx_init (const char **name)
 }
 
 
+/*
+ * gfx.c: support for SGI's /dev/graphics, /dev/opengl
+ *
+ * Author: Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * On IRIX, /dev/graphics is [10, 146]
+ *          /dev/opengl   is [10, 147]
+ *
+ * From a mail with Mark J. Kilgard, /dev/opengl and /dev/graphics are
+ * the same thing, the use of /dev/graphics seems deprecated though.
+ *
+ * The reason that the original SGI programmer had to use only one
+ * device for all the graphic cards on the system will remain a
+ * mistery for the rest of our lives.  Why some ioctls take a board
+ * number and some others not?  Mistery.  Why do they map the hardware
+ * registers into the user address space with an ioctl instead of
+ * mmap?  Mistery too.  Why they did not use the standard way of
+ * making ioctl constants and instead sticked a random constant?
+ * Mistery too.
+ *
+ * We implement those misterious things, and tried not to think about
+ * the reasons behind them.
+ */
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <asm/uaccess.h>
+#include "gconsole.h"
+#include "graphics.h"
+#include <asm/gfx.h>
+#include <asm/rrm.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+/* The boards */
+#include "newport.h"
+
+#ifdef PRODUCTION_DRIVER
+#define enable_gconsole()
+#define disable_gconsole()
+#endif
+
+static struct graphics_ops cards [MAXCARDS];
+static int boards;
+
+#define GRAPHICS_CARD(inode) 0
+
+int
+sgi_graphics_open (struct inode *inode, struct file *file)
+{
+	return 0;
+}
+
+int
+sgi_graphics_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	unsigned int board;
+	unsigned int devnum = GRAPHICS_CARD (inode->i_rdev);
+	int i;
+	
+	if ((cmd >= RRM_BASE) && (cmd <= RRM_CMD_LIMIT))
+		return rrm_command (cmd-RRM_BASE, (void *) arg);
+	
+	switch (cmd){
+	case GFX_GETNUM_BOARDS:
+		return boards;
+
+	case GFX_GETBOARD_INFO: {
+		struct gfx_getboardinfo_args *bia = (void *) arg;
+		void   *dest_buf;
+		int    max_len;
+		
+		i = verify_area (VERIFY_READ, (void *) arg, sizeof (struct gfx_getboardinfo_args));
+		if (i) return i;
+		
+		__get_user_ret (board,    &bia->board, -EFAULT);
+		__get_user_ret (dest_buf, &bia->buf,   -EFAULT);
+		__get_user_ret (max_len,  &bia->len,   -EFAULT);
+
+		if (board >= boards)
+			return -EINVAL;
+		if (max_len < sizeof (struct gfx_getboardinfo_args))
+			return -EINVAL;
+		if (max_len > cards [board].g_board_info_len)
+			max_len = cards [boards].g_board_info_len;
+		i = verify_area (VERIFY_WRITE, dest_buf, max_len);
+		if (i) return i;
+		if (copy_to_user (dest_buf, cards [board].g_board_info, max_len))
+			return -EFAULT;
+		return max_len;
+	}
+
+	case GFX_ATTACH_BOARD: {
+		struct gfx_attach_board_args *att = (void *) arg;
+		void *vaddr;
+		int  r;
+
+		i = verify_area (VERIFY_READ, (void *)arg, sizeof (struct gfx_attach_board_args));
+		if (i) return i;
+
+		__get_user_ret (board, &att->board, -EFAULT);
+		__get_user_ret (vaddr, &att->vaddr, -EFAULT);
+
+		/* Ok for now we are assuming /dev/graphicsN -> head N even
+		 * if the ioctl api suggests that this is not quite the case.
+		 *
+		 * Otherwise we fail, we use this assumption in the mmap code
+		 * below to find our board information.
+		 */
+		if (board != devnum){
+			printk ("Parameter board does not match the current board\n");
+			return -EINVAL;
+		}
+		
+		if (board >= boards)
+			return -EINVAL;
+
+		/* If it is the first opening it, then make it the board owner */
+		if (!cards [board].g_owner)
+			cards [board].g_owner = current;
+
+		/*
+		 * Ok, we now call mmap on this file, which will end up calling
+		 * sgi_graphics_mmap
+		 */
+		disable_gconsole ();
+		r = do_mmap (file, (unsigned long)vaddr, cards [board].g_regs_size,
+			 PROT_READ|PROT_WRITE, MAP_FIXED|MAP_PRIVATE, 0);
+		if (r)
+			return r;
+
+	}
+
+	/* Strange, the real mapping seems to be done at GFX_ATTACH_BOARD,
+	 * GFX_MAPALL is not even used by IRIX X server
+	 */
+	case GFX_MAPALL:
+		return 0;
+
+	case GFX_LABEL:
+		return 0;
+			
+		/* Version check
+		 * for my IRIX 6.2 X server, this is what the kernel returns
+		 */
+	case 1:
+		return 3;
+		
+	/* Xsgi does not use this one, I assume minor is the board being queried */
+	case GFX_IS_MANAGED:
+		if (devnum > boards)
+			return -EINVAL;
+		return (cards [devnum].g_owner != 0);
+
+	default:
+		if (cards [devnum].g_ioctl)
+			return (*cards [devnum].g_ioctl)(devnum, cmd, arg);
+		
+	}
+	return -EINVAL;
+}
+
+int
+sgi_graphics_close (struct inode *inode, struct file *file)
+{
+	int board = GRAPHICS_CARD (inode->i_rdev);
+	
+	/* Tell the rendering manager that one client is going away */
+	rrm_close (inode, file);
+
+	/* Was this file handle from the board owner?, clear it */
+	if (current == cards [board].g_owner){
+		cards [board].g_owner = 0;
+		(*cards [board].g_reset_console)();
+		enable_gconsole ();
+	}
+	return 0;
+}
+
+/* 
+ * This is the core of the direct rendering engine.
+ */
+
+unsigned long
+sgi_graphics_nopage (struct vm_area_struct *vma, unsigned long address, int write_access)
+{
+	unsigned long page;
+	int board = GRAPHICS_CARD (vma->vm_dentry->d_inode->i_rdev);
+
+#ifdef DEBUG_GRAPHICS
+	printk ("Got a page fault for board %d address=%lx guser=%lx\n", board, address,
+		cards [board].g_user);
+#endif
+	
+	/* 1. figure out if another process has this mapped,
+	 * and revoke the mapping in that case.
+	 */
+	if (cards [board].g_user && cards [board].g_user != current){
+		/* FIXME: save graphics context here, dump it to rendering node? */
+		remove_mapping (cards [board].g_user, vma->vm_start, vma->vm_end);
+	}
+	cards [board].g_user = current;
+#if DEBUG_GRAPHICS
+	printk ("Registers: 0x%lx\n", cards [board].g_regs);
+	printk ("vm_start:  0x%lx\n", vma->vm_start);
+	printk ("address:   0x%lx\n", address);
+	printk ("diff:      0x%lx\n", (address - vma->vm_start));
+
+	printk ("page/pfn:  0x%lx\n", page);
+	printk ("TLB entry: %lx\n", pte_val (mk_pte (page + PAGE_OFFSET, PAGE_USERIO)));
+#endif
+	
+	/* 2. Map this into the current process address space */
+	page = ((cards [board].g_regs) + (address - vma->vm_start));
+	return page + PAGE_OFFSET;
+}
+
+/*
+ * We convert a GFX ioctl for mapping hardware registers, in a nice sys_mmap
+ * call, which takes care of everything that must be taken care of.
+ *
+ */
+
+static struct vm_operations_struct graphics_mmap = {
+	NULL,			/* no special mmap-open */
+	NULL,			/* no special mmap-close */
+	NULL,			/* no special mmap-unmap */
+	NULL,			/* no special mmap-protect */
+	NULL,			/* no special mmap-sync */
+	NULL,			/* no special mmap-advise */
+	sgi_graphics_nopage,	/* our magic no-page fault handler */
+	NULL,			/* no special mmap-wppage */
+	NULL,			/* no special mmap-swapout */
+	NULL			/* no special mmap-swapin */
+};
+	
+int
+sgi_graphics_mmap (struct inode *inode, struct file *file, struct vm_area_struct *vma)
+{
+	uint size;
+
+	size = vma->vm_end - vma->vm_start;
+	if (vma->vm_offset & ~PAGE_MASK)
+		return -ENXIO;
+
+	/* 1. Set our special graphic virtualizer  */
+	vma->vm_ops = &graphics_mmap;
+
+	/* 2. Set the special tlb permission bits */
+	vma->vm_page_prot = PAGE_USERIO;
+		
+	/* final setup */
+	vma->vm_dentry = dget (file->f_dentry);
+	return 0;
+}
+	
+/* Do any post card-detection setup on graphics_ops */
+static void
+graphics_ops_post_init (int slot)
+{
+	/* There is no owner for the card initially */
+	cards [slot].g_owner = (struct task_struct *) 0;
+	cards [slot].g_user  = (struct task_struct *) 0;
+}
+
+struct file_operations sgi_graphics_fops = {
+	NULL,			/* llseek */
+	NULL,			/* read */
+	NULL,			/* write */
+	NULL,			/* readdir */
+	NULL,			/* poll */
+	sgi_graphics_ioctl,	/* ioctl */
+	sgi_graphics_mmap,	/* mmap */
+	sgi_graphics_open,	/* open */
+	sgi_graphics_close,	/* release */
+	NULL,			/* fsync */
+	NULL,			/* check_media_change */
+	NULL,			/* revalidate */
+	NULL			/* lock */
+};
+
+/* /dev/graphics */
+static struct miscdevice dev_graphics = {
+        SGI_GRAPHICS_MINOR, "sgi-graphics", &sgi_graphics_fops
+};
+
+/* /dev/opengl */
+static struct miscdevice dev_opengl = {
+        SGI_OPENGL_MINOR, "sgi-opengl", &sgi_graphics_fops
+};
+
+/* This is called later from the misc-init routine */
+void
+gfx_register (void)
+{
+	misc_register (&dev_graphics);
+	misc_register (&dev_opengl);
+}
+
+void 
+gfx_init (const char **name)
+{
+	struct console_ops *console;
+	struct graphics_ops *g;
+
+	printk ("GFX INIT: ");
+	shmiq_init ();
+	usema_init ();
+	
+	if ((g = newport_probe (boards, name)) != 0){
+		cards [boards] = *g;
+		graphics_ops_post_init (boards);
+		boards++;
+		console = 0;
+	}
+	/* Add more graphic drivers here */
+	/* Keep passing console around */
+	
+	if (boards > MAXCARDS){
+		printk ("Too many cards found on the system\n");
+		prom_halt ();
+	}
+}
+
+
diff --git a/drivers/sgi/char/graphics.h b/drivers/sgi/char/graphics.h
index d5a8d2979..c8ad7e318 100644
--- a/drivers/sgi/char/graphics.h
+++ b/drivers/sgi/char/graphics.h
@@ -26,3 +26,31 @@ struct graphics_ops {
 void shmiq_init (void);
 void streamable_init (void);
 void usema_init (void);
+#define MAXCARDS 4
+
+struct graphics_ops {
+	/* SGIism: Board owner, gets the shmiq requests from the kernel */
+	struct task_struct *g_owner;
+
+	/* Last process that got the graphics registers mapped  */
+	struct task_struct *g_user;
+	
+	/* Board info */
+	void               *g_board_info;
+	int                g_board_info_len;
+
+	/* These point to hardware registers that should be mapped with
+	 * GFX_ATTACH_BOARD and the size of the information pointed to
+	 */
+	unsigned long      g_regs;
+	int                g_regs_size;
+
+	void (*g_save_context)(void *);
+	void (*g_restore_context)(void *);
+	void (*g_reset_console)(void);
+	int  (*g_ioctl)(int device, int cmd, unsigned long arg);
+};
+
+void shmiq_init (void);
+void streamable_init (void);
+void usema_init (void);
diff --git a/drivers/sgi/char/linux_logo.h b/drivers/sgi/char/linux_logo.h
index ca041ddde..62a635ee3 100644
--- a/drivers/sgi/char/linux_logo.h
+++ b/drivers/sgi/char/linux_logo.h
@@ -907,3 +907,912 @@ unsigned char linux_logo[] = {
   0xCF, 0xCE, 0xCE, 0x57, 0x63, 0xCC, 0xCD, 0x57,
 };
 
+/* This is a linux logo to be displayed on boot.
+ *
+ * You can put anything here, but:
+ * LINUX_LOGO_COLORS has to be less than 224
+ * image size has to be 80x80
+ * values have to start from0x20
+ * (i.e. RGB(linux_logo_red[0],
+ *	     linux_logo_green[0],
+ *	     linux_logo_blue[0]) is color0x20)
+ */
+
+#define LINUX_LOGO_COLORS 221
+
+unsigned char linux_logo_red[] = {
+  0xF3, 0xF6, 0xF8, 0xF7, 0xEF, 0xE7, 0xE5, 0xE3,
+  0xCA, 0xD4, 0xDD, 0xC8, 0xC7, 0xC4, 0xC2, 0xE5,
+  0xF1, 0xED, 0xEE, 0xE6, 0xC6, 0xDA, 0xDD, 0xE5,
+  0xD9, 0xC6, 0xE3, 0xD0, 0xC6, 0xBA, 0xB0, 0xB6,
+  0xBB, 0xBE, 0xB9, 0xB8, 0xB3, 0xB2, 0xB0, 0xAD,
+  0xAC, 0xA9, 0xA8, 0xA6, 0xA4, 0xA1, 0xA0, 0x9D,
+  0xA0, 0x9F, 0x9E, 0x9C, 0x9B, 0x99, 0x9A, 0x99,
+  0x98, 0x95, 0x96, 0x94, 0x93, 0x92, 0x8F, 0x8D,
+  0x8C, 0x8A, 0x87, 0x86, 0x83, 0x81, 0x0D, 0x03,
+  0x66, 0x44, 0x24, 0x08, 0xD6, 0xE6, 0xE9, 0xE6,
+  0xE7, 0xCA, 0xDC, 0xDB, 0xD5, 0xD0, 0xC9, 0xE2,
+  0xD5, 0xC6, 0xC4, 0xB3, 0xB2, 0xB9, 0xA9, 0x9A,
+  0xB2, 0x9D, 0xE8, 0xEC, 0xF5, 0xF5, 0xF4, 0xF4,
+  0xEC, 0xEE, 0xF0, 0xF5, 0xE0, 0xD6, 0xC5, 0xC2,
+  0xD9, 0xD5, 0xD8, 0xD6, 0xF6, 0xF4, 0xED, 0xEC,
+  0xEB, 0xF1, 0xF6, 0xF5, 0xF5, 0xEE, 0xEF, 0xEC,
+  0xE7, 0xE3, 0xE6, 0xD6, 0xDD, 0xC3, 0xD6, 0xD7,
+  0xCD, 0xCA, 0xC3, 0xAC, 0x95, 0x99, 0xB7, 0xA3,
+  0x8B, 0x88, 0x95, 0x8A, 0x94, 0xD2, 0xCC, 0xC4,
+  0xA8, 0x8E, 0x8F, 0xAE, 0xB8, 0xAC, 0xB6, 0xB4,
+  0xAD, 0xA5, 0xA0, 0x9B, 0x8B, 0xA3, 0x94, 0x87,
+  0x85, 0x89, 0x53, 0x80, 0x7D, 0x7C, 0x7A, 0x78,
+  0x76, 0x71, 0x73, 0x6E, 0x6B, 0x67, 0x65, 0x62,
+  0x4B, 0x5B, 0x5F, 0x53, 0x56, 0x52, 0x4F, 0x46,
+  0x42, 0x0F, 0x75, 0x78, 0x7D, 0x72, 0x5F, 0x6E,
+  0x7A, 0x75, 0x6A, 0x58, 0x48, 0x4F, 0x00, 0x2B,
+  0x37, 0x3E, 0x32, 0x33, 0x25, 0x2C, 0x3B, 0x11,
+  0x1D, 0x14, 0x06, 0x02, 0x00
+};
+
+unsigned char linux_logo_green[] = {
+  0xF3, 0xF6, 0xF8, 0xF7, 0xEF, 0xE7, 0xE5, 0xE3,
+  0xCA, 0xD4, 0xDD, 0xC8, 0xC7, 0xC4, 0xC2, 0xD3,
+  0xDA, 0xD4, 0xD7, 0xCC, 0xC1, 0xCC, 0xCB, 0xC9,
+  0xC5, 0xBC, 0xBC, 0xBB, 0xB7, 0xA5, 0xB0, 0xB6,
+  0xBB, 0xBE, 0xB9, 0xB8, 0xB3, 0xB2, 0xAD, 0xAD,
+  0xAC, 0xA9, 0xA8, 0xA6, 0xA4, 0xA1, 0xA0, 0x95,
+  0xA0, 0x9F, 0x9E, 0x9C, 0x9B, 0x99, 0x9A, 0x99,
+  0x98, 0x95, 0x96, 0x94, 0x93, 0x92, 0x8F, 0x8D,
+  0x8C, 0x8A, 0x87, 0x86, 0x83, 0x81, 0x08, 0x02,
+  0x53, 0x2E, 0x19, 0x06, 0xC6, 0xC8, 0xCF, 0xBD,
+  0xB3, 0xB6, 0xB4, 0xAB, 0xA5, 0xA3, 0x9B, 0xB6,
+  0xA7, 0x99, 0x92, 0xA4, 0x9E, 0x9D, 0x98, 0x8C,
+  0x8A, 0x86, 0xCD, 0xCC, 0xC9, 0xD7, 0xCA, 0xC4,
+  0xCA, 0xC3, 0xC7, 0xC3, 0xC8, 0xB4, 0x91, 0x8E,
+  0x8A, 0x82, 0x87, 0x85, 0xBD, 0xBF, 0xB6, 0xBC,
+  0xAE, 0xB7, 0xBC, 0xB8, 0xBF, 0xB6, 0xBC, 0xB5,
+  0xAB, 0xA6, 0xAD, 0xB2, 0xA5, 0x87, 0x9C, 0x96,
+  0x95, 0x8E, 0x87, 0x8F, 0x86, 0x86, 0x8E, 0x80,
+  0x7A, 0x70, 0x7B, 0x78, 0x78, 0x7F, 0x77, 0x6F,
+  0x70, 0x76, 0x59, 0x77, 0x68, 0x64, 0x7B, 0x7C,
+  0x75, 0x6D, 0x77, 0x69, 0x65, 0x5F, 0x5B, 0x54,
+  0x4F, 0x5B, 0x39, 0x80, 0x7D, 0x7C, 0x7A, 0x78,
+  0x76, 0x71, 0x73, 0x6E, 0x6B, 0x67, 0x65, 0x62,
+  0x4B, 0x5B, 0x5F, 0x53, 0x56, 0x52, 0x4F, 0x46,
+  0x42, 0x0B, 0x69, 0x66, 0x64, 0x57, 0x4A, 0x4E,
+  0x55, 0x4B, 0x46, 0x3B, 0x30, 0x33, 0x00, 0x2B,
+  0x37, 0x3E, 0x32, 0x33, 0x25, 0x2C, 0x29, 0x0D,
+  0x1D, 0x14, 0x06, 0x02, 0x00
+};
+
+unsigned char linux_logo_blue[] = {
+  0xF3, 0xF6, 0xF8, 0xF7, 0xEF, 0xEE, 0xE5, 0xDE,
+  0xD7, 0xD3, 0xDD, 0xC8, 0xC7, 0xC4, 0xC2, 0xB5,
+  0xB0, 0xA6, 0xAC, 0x9B, 0xB5, 0xB5, 0xAE, 0x84,
+  0x90, 0xA9, 0x81, 0x8D, 0x96, 0x86, 0xB0, 0xB6,
+  0xBB, 0xBE, 0xB9, 0xB8, 0xB3, 0xB2, 0xA7, 0xAD,
+  0xAC, 0xA9, 0xA8, 0xA6, 0xA4, 0xA1, 0xA5, 0x87,
+  0xA0, 0x9F, 0x9E, 0x9C, 0x9B, 0x9A, 0x9A, 0x99,
+  0x98, 0x95, 0x96, 0x94, 0x93, 0x92, 0x8F, 0x8D,
+  0x8C, 0x8A, 0x87, 0x86, 0x83, 0x81, 0xC8, 0xD7,
+  0x9B, 0x8E, 0x8C, 0xB2, 0x77, 0x77, 0x4E, 0x77,
+  0x69, 0x71, 0x78, 0x6B, 0x65, 0x66, 0x64, 0x59,
+  0x5C, 0x5A, 0x48, 0x72, 0x7B, 0x6B, 0x67, 0x6E,
+  0x42, 0x5B, 0x29, 0x36, 0x25, 0x10, 0x17, 0x14,
+  0x19, 0x16, 0x13, 0x0E, 0x08, 0x2E, 0x2E, 0x3D,
+  0x24, 0x24, 0x24, 0x24, 0x13, 0x12, 0x14, 0x14,
+  0x0E, 0x08, 0x0D, 0x0F, 0x08, 0x0D, 0x0E, 0x08,
+  0x08, 0x0C, 0x06, 0x06, 0x07, 0x16, 0x07, 0x0E,
+  0x08, 0x0A, 0x07, 0x0D, 0x2D, 0x3E, 0x09, 0x4E,
+  0x68, 0x52, 0x56, 0x58, 0x4B, 0x22, 0x20, 0x20,
+  0x27, 0x39, 0x28, 0x19, 0x1E, 0x1E, 0x08, 0x06,
+  0x07, 0x09, 0x08, 0x08, 0x05, 0x1D, 0x1F, 0x17,
+  0x18, 0x06, 0x79, 0x80, 0x7D, 0x7C, 0x7A, 0x78,
+  0x76, 0x71, 0x73, 0x6E, 0x6B, 0x68, 0x65, 0x62,
+  0x4B, 0x5B, 0x5F, 0x55, 0x56, 0x52, 0x4F, 0x46,
+  0x42, 0x5A, 0x14, 0x23, 0x3D, 0x2B, 0x21, 0x14,
+  0x06, 0x04, 0x03, 0x07, 0x09, 0x13, 0x2A, 0x3A,
+  0x37, 0x3E, 0x32, 0x33, 0x25, 0x2C, 0x07, 0x09,
+  0x1D, 0x14, 0x06, 0x02, 0x00
+};
+
+unsigned char linux_logo[] = {
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x58, 0x57,
+  0x58, 0x58, 0x59, 0x5C, 0x5D, 0x5F, 0x60, 0x61,
+  0x62, 0x61, 0x61, 0x62, 0x62, 0x62, 0x63, 0x63,
+  0x61, 0x61, 0x61, 0x61, 0x61, 0x60, 0x5E, 0x5E,
+  0x5E, 0x5D, 0x5D, 0x5C, 0x5D, 0x5B, 0x58, 0x58,
+  0x58, 0x57, 0x58, 0x57, 0x57, 0x57, 0x57, 0x58,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x58, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x58, 0x57,
+  0x54, 0x56, 0x57, 0x67, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0x67, 0x4C,
+  0x4A, 0x49, 0x4A, 0x49, 0x4A, 0x49, 0x49, 0x4A,
+  0x4A, 0x4B, 0x4B, 0x4B, 0x4C, 0x50, 0x51, 0x52,
+  0x54, 0x54, 0x56, 0x57, 0x57, 0x57, 0x57, 0x58,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x58, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x58, 0x56, 0x56, 0x53,
+  0x52, 0x53, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFB, 0xFB, 0xFB,
+  0x4B, 0x4B, 0x4B, 0x4A, 0x49, 0x4A, 0x4A, 0x49,
+  0x49, 0x49, 0x48, 0x49, 0x49, 0x4A, 0x4A, 0x4B,
+  0x4C, 0x4D, 0x52, 0x54, 0x56, 0x55, 0x57, 0x58,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x58, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50,
+  0x50, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xF8, 0xF0, 0xF4, 0xFB,
+  0xFC, 0x67, 0x53, 0x50, 0x4D, 0x4C, 0x4C, 0x4C,
+  0x4B, 0x4A, 0x4A, 0x48, 0x49, 0x48, 0x48, 0x49,
+  0x49, 0x49, 0x4B, 0x4C, 0x50, 0x52, 0x53, 0x56,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x58, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x55, 0x54, 0x53, 0x51, 0x51, 0x50, 0x4C, 0x4D,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xF4, 0xD2, 0xD7, 0xF5,
+  0xFC, 0xFC, 0x5D, 0x5D, 0x5C, 0x5C, 0x59, 0x58,
+  0x58, 0x56, 0x52, 0x4C, 0x4B, 0x4A, 0x4A, 0x48,
+  0x48, 0x48, 0x48, 0x48, 0x49, 0x4B, 0x4D, 0x51,
+  0x54, 0x56, 0x58, 0x57, 0x57, 0x58, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x57, 0x55, 0x54,
+  0x53, 0x52, 0x51, 0x4D, 0x4D, 0x4D, 0x50, 0x50,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xF4, 0x64, 0xD9, 0xF5,
+  0xF9, 0xFC, 0xFC, 0x64, 0x63, 0x62, 0x61, 0x61,
+  0x61, 0x60, 0x5E, 0x5B, 0x5A, 0x54, 0x52, 0x4C,
+  0x4B, 0x49, 0x49, 0x47, 0x47, 0x48, 0x49, 0x4B,
+  0x4C, 0x51, 0x53, 0x56, 0x57, 0x58, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x57, 0x57, 0x55, 0x53, 0x53,
+  0x51, 0x50, 0x50, 0x50, 0x50, 0x50, 0x53, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xF4, 0xF5, 0xF9, 0xFC,
+  0xFC, 0xFC, 0xFC, 0x64, 0x64, 0x64, 0x64, 0x64,
+  0x64, 0x64, 0x64, 0x63, 0x61, 0x61, 0x5E, 0x59,
+  0x55, 0x52, 0x4C, 0x4A, 0x49, 0x47, 0x48, 0x48,
+  0x49, 0x4B, 0x4D, 0x51, 0x54, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x58, 0x55, 0x54, 0x54, 0x52, 0x51,
+  0x51, 0x51, 0x51, 0x51, 0x53, 0x54, 0x59, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xF7, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0x60, 0x60, 0x60, 0x61,
+  0x62, 0x63, 0x64, 0x64, 0x65, 0x65, 0x64, 0x63,
+  0x61, 0x5E, 0x59, 0x56, 0x4D, 0x4B, 0x48, 0x48,
+  0x48, 0x48, 0x49, 0x4B, 0x50, 0x53, 0x56, 0x56,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x56, 0x54, 0x53, 0x52, 0x51, 0x51,
+  0x51, 0x52, 0x53, 0x55, 0x59, 0x5D, 0x5E, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFB, 0xFB, 0xFB, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0x4C, 0x4E, 0x51, 0x52,
+  0x57, 0x5A, 0x5E, 0x60, 0x61, 0x63, 0x65, 0xCB,
+  0x64, 0x64, 0x63, 0x60, 0x5C, 0x57, 0x50, 0x4B,
+  0x48, 0x47, 0x47, 0x47, 0x4A, 0x4C, 0x52, 0x53,
+  0x54, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x55, 0x54, 0x53, 0x53, 0x51, 0x52, 0x52, 0x53,
+  0x53, 0x57, 0x5A, 0x5D, 0x5E, 0x5E, 0x60, 0xFC,
+  0xFC, 0xFC, 0xFB, 0xF9, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFA, 0xF9, 0xF5, 0xFB, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFB, 0x45, 0x3F, 0x3F,
+  0x45, 0x48, 0x4B, 0x4D, 0x54, 0x5A, 0x5E, 0x61,
+  0x63, 0xCB, 0xCB, 0x65, 0x64, 0x62, 0x5E, 0x57,
+  0x50, 0x4B, 0x48, 0x47, 0x47, 0x48, 0x4B, 0x4D,
+  0x51, 0x56, 0x56, 0x57, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x55,
+  0x54, 0x54, 0x53, 0x53, 0x52, 0x53, 0x54, 0x57,
+  0x59, 0x5C, 0x5E, 0x5E, 0x5E, 0x5E, 0x5E, 0xFC,
+  0xFC, 0xFA, 0xFC, 0xFA, 0xE0, 0xFC, 0xFC, 0xFC,
+  0xFB, 0xFB, 0xFB, 0xDF, 0xD8, 0xF9, 0xE0, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFB, 0x4C, 0x4A, 0x48,
+  0x48, 0x3E, 0x44, 0x43, 0x3F, 0x47, 0x4B, 0x52,
+  0x5A, 0x5E, 0x62, 0x64, 0xCB, 0xCB, 0x64, 0x61,
+  0x5E, 0x57, 0x4D, 0x49, 0x47, 0x47, 0x48, 0x4A,
+  0x4C, 0x52, 0x54, 0x56, 0x57, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x55,
+  0x54, 0x53, 0x53, 0x54, 0x54, 0x55, 0x58, 0x5B,
+  0x5C, 0x5D, 0x5E, 0x5D, 0x5D, 0x5B, 0x58, 0xFC,
+  0xFC, 0xD8, 0x4C, 0x60, 0xFC, 0xF5, 0xFC, 0xFC,
+  0xFC, 0xF7, 0x5F, 0x48, 0x48, 0x2C, 0xF8, 0xF9,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0x4B, 0x4A, 0x49,
+  0x49, 0x49, 0x49, 0x47, 0x3E, 0x44, 0x42, 0x3F,
+  0x3E, 0x4B, 0x54, 0x5C, 0x61, 0x64, 0xCB, 0xCB,
+  0x64, 0x61, 0x5D, 0x53, 0x4B, 0x49, 0x47, 0x47,
+  0x49, 0x4B, 0x50, 0x53, 0x56, 0x57, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x57, 0x55, 0x55, 0x54,
+  0x53, 0x53, 0x54, 0x56, 0x58, 0x5A, 0x5B, 0x5D,
+  0x5D, 0x5D, 0x5C, 0x5A, 0x54, 0x52, 0x4C, 0xFC,
+  0xF7, 0x4E, 0x2D, 0x29, 0x4E, 0xFC, 0xFC, 0xFC,
+  0xFB, 0x5F, 0x26, 0x24, 0x20, 0x2E, 0x65, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0x45, 0x3F, 0x45,
+  0x3E, 0x47, 0x47, 0x47, 0x47, 0x47, 0x3E, 0x44,
+  0x43, 0x40, 0x44, 0x49, 0x51, 0x5C, 0x62, 0x64,
+  0xCB, 0xCB, 0x63, 0x60, 0x58, 0x50, 0x49, 0x48,
+  0x48, 0x48, 0x4A, 0x4D, 0x53, 0x54, 0x57, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x55, 0x54, 0x54, 0x54,
+  0x54, 0x54, 0x55, 0x57, 0x59, 0x5B, 0x5C, 0x5D,
+  0x5C, 0x5A, 0x54, 0x51, 0x4C, 0x4C, 0x54, 0xFC,
+  0xF9, 0x23, 0xDB, 0x2D, 0x23, 0xFA, 0xFB, 0xFA,
+  0xF5, 0x27, 0x21, 0xD9, 0xF8, 0x20, 0x21, 0xFB,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0x5D, 0x58, 0x55,
+  0x50, 0x48, 0x45, 0x43, 0x44, 0x44, 0x45, 0x45,
+  0x3E, 0x3F, 0x43, 0x41, 0x3F, 0x48, 0x52, 0x5D,
+  0x63, 0x65, 0xCB, 0x65, 0x61, 0x5D, 0x52, 0x4B,
+  0x48, 0x47, 0x47, 0x49, 0x4C, 0x51, 0x54, 0x57,
+  0x57, 0x57, 0x57, 0x57, 0x55, 0x54, 0x54, 0x54,
+  0x54, 0x58, 0x5A, 0x59, 0x5B, 0x5B, 0x5B, 0x5A,
+  0x55, 0x52, 0x4D, 0x4D, 0x55, 0x5B, 0x5D, 0xFC,
+  0xF1, 0xF9, 0xFC, 0xD4, 0x21, 0xCC, 0xF7, 0xF8,
+  0xF2, 0x21, 0xD9, 0xFC, 0xF2, 0xFB, 0x21, 0x45,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFB, 0xD1, 0xD0, 0xCD,
+  0xCC, 0x63, 0x5E, 0x58, 0x50, 0x47, 0x43, 0x3F,
+  0x3F, 0x3F, 0x3F, 0x3F, 0x40, 0x41, 0x3F, 0x4A,
+  0x56, 0x5E, 0x64, 0xCB, 0x65, 0x63, 0x5E, 0x56,
+  0x4C, 0x48, 0x47, 0x47, 0x49, 0x4C, 0x51, 0x54,
+  0x58, 0x57, 0x57, 0x57, 0x57, 0x55, 0x54, 0x54,
+  0x57, 0x5A, 0x5A, 0x5C, 0x5B, 0x5A, 0x58, 0x54,
+  0x51, 0x4C, 0x55, 0x5D, 0x5D, 0x5B, 0x54, 0xFC,
+  0xF0, 0xF9, 0xFC, 0x65, 0x45, 0xCD, 0xFB, 0xFB,
+  0xF8, 0x26, 0xFB, 0xFC, 0xFC, 0xFC, 0x21, 0x27,
+  0xFB, 0xFC, 0xFC, 0xFC, 0xFB, 0xD7, 0x35, 0x34,
+  0x2F, 0x35, 0x36, 0x2F, 0x2F, 0x36, 0x2F, 0x2F,
+  0x36, 0x36, 0x35, 0x35, 0x43, 0x42, 0x41, 0x2E,
+  0x45, 0x4C, 0x5B, 0x62, 0x65, 0xCC, 0x64, 0x60,
+  0x58, 0x4D, 0x49, 0x47, 0x47, 0x49, 0x4C, 0x51,
+  0x58, 0x57, 0x57, 0x57, 0x57, 0x57, 0x55, 0x57,
+  0x58, 0x5A, 0x5A, 0x5B, 0x5A, 0x55, 0x54, 0x51,
+  0x53, 0x5C, 0x5D, 0x5D, 0x54, 0x4B, 0x4D, 0xFC,
+  0xFC, 0x44, 0xFC, 0xFB, 0x7B, 0xAB, 0xA8, 0xAE,
+  0xAB, 0x7F, 0xFC, 0xFC, 0xFB, 0xFB, 0x22, 0x2A,
+  0xFC, 0xFC, 0xFC, 0xFC, 0x36, 0x2F, 0x30, 0x30,
+  0x32, 0x30, 0x32, 0x30, 0x30, 0x30, 0x30, 0x30,
+  0x30, 0x30, 0x30, 0x30, 0x2F, 0x2F, 0x40, 0x41,
+  0x2E, 0x40, 0x48, 0x56, 0x5F, 0x64, 0xCC, 0x65,
+  0x61, 0x59, 0x50, 0x49, 0x47, 0x47, 0x49, 0x4C,
+  0x5A, 0x57, 0x57, 0x57, 0x57, 0x57, 0x57, 0x58,
+  0x5A, 0x5A, 0x5A, 0x58, 0x55, 0x52, 0x51, 0x5A,
+  0x5D, 0x5D, 0x57, 0x4C, 0x51, 0x54, 0x5D, 0xFC,
+  0xFC, 0x2A, 0xFC, 0xC9, 0xAA, 0x8B, 0x8A, 0x8C,
+  0xAB, 0x8C, 0x8C, 0xFB, 0xFB, 0x23, 0x20, 0xF1,
+  0xFC, 0xFC, 0xFC, 0x3B, 0x33, 0x33, 0x32, 0x32,
+  0x31, 0x32, 0x30, 0x32, 0x32, 0x32, 0x32, 0x30,
+  0x31, 0x31, 0x31, 0x32, 0x33, 0x33, 0x3C, 0x41,
+  0x41, 0x2E, 0x2D, 0x45, 0x4D, 0x5D, 0x63, 0xCC,
+  0x65, 0x62, 0x5D, 0x51, 0x49, 0x47, 0x47, 0x4A,
+  0x59, 0x57, 0x57, 0x57, 0x57, 0x58, 0x58, 0x58,
+  0x5A, 0x5A, 0x58, 0x55, 0x53, 0x53, 0x5C, 0x5E,
+  0x59, 0x51, 0x4E, 0x54, 0x59, 0x5E, 0x62, 0xFC,
+  0xFC, 0xDB, 0xAA, 0xA1, 0x95, 0x9C, 0x8C, 0x88,
+  0x82, 0x83, 0x83, 0x8C, 0x88, 0xAE, 0xB9, 0xFB,
+  0xFC, 0xFC, 0xFC, 0x3C, 0x3B, 0x72, 0x38, 0x33,
+  0x33, 0x33, 0x31, 0x33, 0x31, 0x31, 0x31, 0x31,
+  0x33, 0x33, 0x38, 0x33, 0x72, 0x3B, 0x44, 0x2E,
+  0x41, 0x2E, 0x2E, 0x2D, 0x43, 0x4B, 0x5B, 0x63,
+  0xCB, 0xCC, 0x63, 0x5D, 0x51, 0x49, 0x47, 0x49,
+  0x5C, 0x58, 0x57, 0x57, 0x57, 0x57, 0x58, 0x58,
+  0x58, 0x58, 0x57, 0x53, 0x58, 0x5D, 0x5E, 0x55,
+  0x51, 0x53, 0x58, 0x5E, 0x60, 0x63, 0x64, 0xFC,
+  0xFC, 0xC0, 0xA6, 0x9D, 0x8B, 0x9C, 0x8C, 0x8C,
+  0x6E, 0x83, 0x88, 0x8C, 0x8C, 0x8C, 0x83, 0xE8,
+  0xFB, 0xFC, 0xFC, 0xFC, 0x33, 0x70, 0x70, 0x6F,
+  0x6F, 0x6F, 0x6F, 0x3A, 0x6F, 0x6D, 0x6F, 0x6F,
+  0x70, 0x6F, 0x6F, 0x70, 0x6F, 0x32, 0x5A, 0x48,
+  0x41, 0x2D, 0x2D, 0x2D, 0x2C, 0x41, 0x49, 0x5A,
+  0x62, 0xCB, 0xCB, 0x63, 0x5D, 0x50, 0x49, 0x4A,
+  0x5C, 0x58, 0x58, 0x57, 0x55, 0x57, 0x57, 0x57,
+  0x57, 0x55, 0x56, 0x59, 0x5E, 0x5C, 0x52, 0x53,
+  0x55, 0x5B, 0x5E, 0x61, 0x63, 0x64, 0x63, 0xFC,
+  0xE8, 0xBF, 0xA4, 0x99, 0x9C, 0x8C, 0x88, 0x88,
+  0x6E, 0x88, 0x8C, 0x8C, 0x8C, 0xC2, 0xA6, 0xC4,
+  0xFC, 0xFC, 0xFC, 0xFC, 0x36, 0x3A, 0x6F, 0x70,
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+  0xD3, 0x4C, 0x47, 0x4D, 0x42, 0x4C, 0x60, 0xCC,
+  0xCE, 0xD0, 0x65, 0x4B, 0x47, 0x44, 0x2B, 0x45,
+  0x4B, 0x47, 0x49, 0xA7, 0xA1, 0x9A, 0x97, 0x89,
+  0x95, 0x97, 0x97, 0x9E, 0x89, 0x95, 0x89, 0x9C,
+  0x87, 0x95, 0x97, 0x99, 0x95, 0x99, 0x9F, 0xA4,
+  0xC4, 0x21, 0x21, 0x23, 0x21, 0x23, 0x23, 0x23,
+  0x23, 0x23, 0x23, 0x23, 0x21, 0x20, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xEA, 0xAA, 0xA6, 0xA2, 0x99,
+  0x8B, 0x9A, 0x95, 0x9E, 0x9E, 0x9A, 0x94, 0x87,
+  0x94, 0x94, 0x89, 0x94, 0x9B, 0x9B, 0xA7, 0xDC,
+  0xDB, 0x65, 0x2E, 0x3E, 0x43, 0x44, 0x49, 0x58,
+  0x63, 0xD3, 0xD3, 0x5E, 0x42, 0x42, 0x2D, 0x40,
+  0x54, 0x4C, 0x4A, 0xA7, 0xA0, 0x99, 0x9B, 0x94,
+  0xA0, 0x8A, 0x9B, 0x9D, 0x87, 0x95, 0x94, 0x8B,
+  0x8A, 0x98, 0x9C, 0x8A, 0x9B, 0x99, 0xA2, 0xA6,
+  0xBF, 0xEC, 0x2A, 0x20, 0x21, 0x23, 0x21, 0x20,
+  0x20, 0x20, 0x20, 0x4C, 0xF9, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xEB, 0xAA, 0xA4, 0x9F, 0x9C,
+  0x8B, 0x9B, 0x88, 0x84, 0x9E, 0x9D, 0x96, 0x94,
+  0x94, 0x9A, 0x9B, 0x9B, 0xA4, 0xD5, 0xCD, 0xDE,
+  0xF1, 0xDA, 0x4C, 0x2D, 0x41, 0x2B, 0x42, 0x4C,
+  0x5E, 0xD4, 0xD7, 0xCD, 0x49, 0x2E, 0x2E, 0x41,
+  0x5E, 0x57, 0xA7, 0xA6, 0xA7, 0xA4, 0xA2, 0x98,
+  0x9D, 0x9C, 0xA1, 0x99, 0x9D, 0x88, 0x8B, 0x9C,
+  0x8A, 0x9C, 0x9C, 0x94, 0x9C, 0x89, 0xA0, 0xA6,
+  0xAA, 0xEB, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFB, 0xE9, 0xAA, 0xA6, 0xA2, 0x8B,
+  0x8B, 0x8A, 0x86, 0x9B, 0x9C, 0x98, 0xA0, 0x9B,
+  0x9B, 0x84, 0xA7, 0xB4, 0x61, 0xD1, 0xD2, 0xE0,
+  0xF1, 0xDC, 0x61, 0x2D, 0x2E, 0x3F, 0x56, 0x62,
+  0x5D, 0xD4, 0xD9, 0xD3, 0x54, 0x41, 0x41, 0x44,
+  0xCB, 0x60, 0x52, 0xA9, 0xA9, 0xA9, 0xA7, 0xA6,
+  0xA6, 0xA4, 0xA4, 0xA2, 0xA2, 0x9D, 0x95, 0x89,
+  0x9C, 0x8A, 0x9E, 0x9C, 0x8A, 0x9E, 0xA0, 0xA8,
+  0xC0, 0xE9, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xE9, 0xAA, 0xA6, 0xA0, 0x99,
+  0x9C, 0x8B, 0x9A, 0x84, 0x9B, 0x9B, 0x98, 0x98,
+  0xA9, 0xB9, 0x49, 0x57, 0xCB, 0xD4, 0xD3, 0xF1,
+  0xD8, 0xDA, 0xCE, 0x3F, 0x41, 0x4B, 0x5D, 0xCB,
+  0x5E, 0xD6, 0xDB, 0xD6, 0x5D, 0x43, 0x3F, 0x49,
+  0xD1, 0xCC, 0x4F, 0xDD, 0xC3, 0xBB, 0xBF, 0xAA,
+  0xAA, 0xA9, 0xAA, 0xA8, 0xA8, 0xA6, 0xA6, 0xA2,
+  0x9C, 0x9F, 0x9B, 0x9A, 0x9D, 0xA2, 0xA8, 0xAA,
+  0xC1, 0xEA, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xEA, 0xC0, 0xAA, 0xA6, 0xA2,
+  0xA2, 0x99, 0xA0, 0xA0, 0xA4, 0xA7, 0xA9, 0xC0,
+  0x67, 0x49, 0x54, 0x60, 0xD0, 0xD4, 0xCC, 0xDF,
+  0xD9, 0xD5, 0xD2, 0x3E, 0x47, 0x56, 0x60, 0xCD,
+  0x5D, 0xD9, 0xD9, 0xD6, 0x61, 0x3F, 0x47, 0x52,
+  0xD6, 0xD3, 0x62, 0x4D, 0x40, 0x4A, 0x57, 0xCA,
+  0xC3, 0xC1, 0xC1, 0xC0, 0xBF, 0xBF, 0xAA, 0xAA,
+  0xA6, 0xA4, 0xA4, 0xA4, 0xA6, 0xA8, 0xBE, 0xC1,
+  0xC9, 0xEB, 0xFB, 0xFB, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC,
+  0xFC, 0xFC, 0xFC, 0xEB, 0xC3, 0xC0, 0xAA, 0xA8,
+  0xA6, 0xA6, 0xA6, 0xA9, 0xAA, 0xC0, 0xE8, 0xD0,
+  0xD2, 0x4C, 0x5E, 0x64, 0xD0, 0xD1, 0x5F, 0xD9,
+  0xD5, 0xD1, 0xD0, 0x48, 0x52, 0x5C, 0x64, 0xCD,
+  0x5C, 0xDC, 0xD7, 0xD5, 0x62, 0x3F, 0x4C, 0x53,
+  0xDA, 0xD7, 0xCE, 0x56, 0x40, 0x4B, 0x52, 0x56,
+  0xCE, 0xDF, 0x6A, 0xEB, 0xE9, 0xC9, 0xC3, 0xC0,
+  0xC0, 0xBF, 0xBE, 0xAA, 0xBF, 0xC0, 0xC3, 0xC9,
+  0xEA, 0xF6, 0xEE, 0x58, 0x57, 0x5E, 0xD6, 0xD0,
+  0xD2, 0x61, 0xCB, 0xD6, 0xD6, 0xD4, 0xDF, 0xF3,
+  0xF2, 0xDD, 0xD7, 0xEB, 0xC9, 0xC1, 0xC0, 0xBF,
+  0xAA, 0xAA, 0xAA, 0xBE, 0xC3, 0xF0, 0xD2, 0xD2,
+  0xD2, 0x51, 0x62, 0xCC, 0xD0, 0xCC, 0x61, 0xD3,
+  0xCF, 0xCE, 0xD2, 0x48, 0x5A, 0x61, 0xCC, 0xCE,
+  0x5F, 0xD9, 0xD5, 0xD1, 0x63, 0x44, 0x56, 0x56,
+  0xDC, 0xD9, 0xD4, 0x5E, 0x42, 0x4A, 0x4C, 0x57,
+  0x5D, 0xD8, 0xE0, 0xD8, 0xDC, 0xCB, 0x66, 0xEC,
+  0xE8, 0xC3, 0xC3, 0xC3, 0xC3, 0xC9, 0xE8, 0xEA,
+  0xF6, 0x50, 0x3E, 0x58, 0x57, 0x5A, 0xD6, 0xD4,
+  0xCC, 0x4B, 0x53, 0x5C, 0x64, 0xD1, 0xDF, 0xF3,
+  0xF1, 0xDE, 0xD9, 0xF6, 0xEB, 0xC9, 0xC1, 0xC1,
+  0xC0, 0xC0, 0xC1, 0xC9, 0xF0, 0xD6, 0xCD, 0xD6,
+  0xD3, 0x53, 0xCB, 0xCF, 0xCD, 0x5F, 0x5F, 0xCE,
+  0xCF, 0xCD, 0xD0, 0x47, 0x5F, 0xCB, 0xCE, 0xCD,
+  0x63, 0xD6, 0xD3, 0xD1, 0x63, 0x3F, 0x58, 0x58,
+  0xDB, 0xDC, 0xDA, 0x65, 0x3E, 0x49, 0x49, 0x4D,
+  0x49, 0xDC, 0xDF, 0xE0, 0xDE, 0xD5, 0x47, 0x47,
+  0x46, 0x6B, 0xEB, 0xEA, 0xE9, 0xEA, 0xEB, 0xF6,
+  0xD0, 0x57, 0x57, 0x47, 0x47, 0x5B, 0xD4, 0xD4,
+  0xCD, 0x44, 0x3E, 0x4B, 0x50, 0x4B, 0x51, 0xD5,
+  0xDB, 0xD8, 0xDE, 0x4B, 0xF6, 0xF6, 0xEA, 0xE9,
+  0xE8, 0xEA, 0xEB, 0x67, 0x5E, 0xCC, 0xD6, 0xDC,
+  0xD5, 0x58, 0xCE, 0xCE, 0x62, 0x50, 0xCC, 0xD3,
+  0xD2, 0xCD, 0xCD, 0x4B, 0x64, 0xCE, 0xCE, 0x64,
+  0xCC, 0xD3, 0xD2, 0xD2, 0x61, 0x47, 0x5D, 0x5C,
+  0xDD, 0xDD, 0xD9, 0xD1, 0x4C, 0x47, 0x49, 0x4A,
+  0x4B, 0xD1, 0xD8, 0xE0, 0xDF, 0xDD, 0x5D, 0x4A,
+  0x48, 0x52, 0x51, 0x3F, 0xF6, 0xEC, 0xE0, 0xE0,
+  0xD3, 0x5E, 0x5F, 0x50, 0x4B, 0x50, 0xCB, 0xCE,
+  0x64, 0x45, 0x4C, 0x57, 0x57, 0x58, 0x52, 0xD6,
+  0xD3, 0xDE, 0xDF, 0xD1, 0x3E, 0x4B, 0xF6, 0xF6,
+  0xEC, 0x66, 0x53, 0x43, 0x56, 0xD1, 0xD9, 0xDE,
+  0xD4, 0x5E, 0xCE, 0xCC, 0x5B, 0x2C, 0xD4, 0xD5,
+  0xD2, 0xD0, 0x63, 0x5D, 0xCD, 0xD0, 0xCD, 0x5E,
+  0xD0, 0xCF, 0xCE, 0xD2, 0x5E, 0x50, 0x60, 0x5D,
+  0xDE, 0xDD, 0xDC, 0xD7, 0x5D, 0x45, 0x47, 0x3E,
+  0x4B, 0x5E, 0xDE, 0xDF, 0xE0, 0xD8, 0xCF, 0x3E,
+  0x45, 0x51, 0x58, 0x42, 0xCB, 0xDA, 0xDE, 0xD8,
+  0xD2, 0x61, 0xCC, 0xCF, 0xD6, 0xDA, 0xDA, 0xD5,
+  0xD0, 0x50, 0x44, 0x57, 0x57, 0x58, 0x45, 0xD1,
+  0xD1, 0xD7, 0xDF, 0xDF, 0xD7, 0xCF, 0x64, 0x60,
+  0xCE, 0xCE, 0xCE, 0x63, 0xCF, 0xDA, 0xDE, 0xD9,
+  0xCF, 0x63, 0xCD, 0x63, 0x4D, 0x4B, 0xD6, 0xD5,
+  0xCE, 0xD3, 0x60, 0xCB, 0xD0, 0xD0, 0x65, 0x47,
+  0xD0, 0xCC, 0xCC, 0xD1, 0x59, 0x5D, 0x63, 0x5E,
+  0xDD, 0xDD, 0xDE, 0xDC, 0xCB, 0x40, 0x48, 0x45,
+  0x3E, 0x3E, 0xD9, 0xDF, 0xE0, 0xDF, 0xDA, 0x51,
+  0x4C, 0x48, 0x56, 0x4C, 0x5B, 0xD2, 0xDA, 0xDB,
+  0xCB, 0x5F, 0xD0, 0xCC, 0xDC, 0xF0, 0xF3, 0xE0,
+  0xDD, 0xCC, 0x41, 0x50, 0x57, 0x57, 0x4B, 0x5D,
+  0xD3, 0xD1, 0xDE, 0xDF, 0xDE, 0xD7, 0xD0, 0xD0,
+  0xD5, 0xD6, 0xD6, 0xCE, 0xD7, 0xDC, 0xDA, 0xD5,
+  0x60, 0x63, 0x64, 0x5E, 0x47, 0x61, 0xD5, 0xD2,
+  0xCF, 0xD0, 0x59, 0xCD, 0xD1, 0xCF, 0x61, 0x4D,
+  0xCC, 0xCE, 0xCD, 0xD0, 0x52, 0x61, 0x64, 0x60,
+  0xDA, 0xDE, 0xDE, 0xDD, 0xD1, 0x4B, 0x4A, 0x45,
+  0x3E, 0x41, 0xCD, 0xDE, 0xE0, 0xF1, 0xDE, 0x63,
+  0x4A, 0x4A, 0x4A, 0x4B, 0x50, 0xCB, 0xD4, 0xD7,
+  0x5E, 0x54, 0x62, 0xD3, 0xD4, 0xF0, 0xF3, 0xF3,
+  0xF2, 0xDE, 0x61, 0x40, 0x49, 0x56, 0x4D, 0x3E,
+  0x4B, 0xCE, 0xD9, 0xD8, 0xD9, 0xD5, 0xCF, 0xD2,
+  0xD6, 0xD6, 0xD1, 0xD1, 0xD7, 0xD5, 0xCF, 0xD0,
+  0x54, 0x64, 0x63, 0x56, 0x2C, 0xCB, 0xD1, 0xCC,
+  0xD3, 0xCD, 0x54, 0xCF, 0xD1, 0xCE, 0x5E, 0x5C,
+  0xCE, 0xCE, 0xCE, 0xCB, 0x4B, 0x63, 0xCC, 0x61,
+  0xD4, 0xDC, 0xDE, 0xDE, 0xDA, 0x5D, 0x45, 0x45,
+  0x48, 0x3F, 0x52, 0xD9, 0xD8, 0xDF, 0xDF, 0xD2,
+  0x52, 0x4B, 0x3E, 0x2E, 0x47, 0x60, 0xCF, 0xD3,
+  0x59, 0x48, 0x50, 0x5E, 0xCC, 0xDE, 0xF2, 0xF2,
+  0xF3, 0xF3, 0xDD, 0x5D, 0x3E, 0x48, 0x47, 0x47,
+  0x58, 0xD1, 0xDA, 0xDA, 0xD5, 0xD1, 0xCD, 0xD2,
+  0xD3, 0xCF, 0xD3, 0xD1, 0xCD, 0xD3, 0xD2, 0x5E,
+  0x52, 0x64, 0x60, 0x4B, 0x45, 0x61, 0xCD, 0xD3,
+  0xD3, 0x64, 0x61, 0xD0, 0xD0, 0x64, 0x45, 0x63,
+  0xD0, 0xCE, 0xD0, 0x60, 0x56, 0xCB, 0xCC, 0x62,
+  0xCE, 0xDA, 0xDE, 0xD8, 0xDD, 0xCC, 0x45, 0x49,
+  0x3E, 0x47, 0x42, 0xD1, 0xDC, 0xD8, 0xD8, 0xD3,
+  0x5D, 0x4C, 0x49, 0x3F, 0x47, 0x59, 0xCD, 0xCF,
+  0x59, 0x2E, 0x48, 0x47, 0x52, 0x63, 0xF0, 0xF2,
+  0xF3, 0xF3, 0xF2, 0xDA, 0x52, 0x4B, 0x52, 0x58,
+  0x5E, 0x63, 0xD0, 0xD0, 0xD0, 0xCF, 0xCE, 0xCE,
+  0xCF, 0x65, 0x61, 0xD6, 0xD6, 0xD6, 0xCB, 0x4B,
+  0x61, 0x62, 0x5D, 0x43, 0x4B, 0x61, 0xD0, 0xD4,
+  0xD1, 0x61, 0xCE, 0xD2, 0xCD, 0x5E, 0x4A, 0xCE,
+  0xD0, 0xCC, 0xD0, 0x59, 0x61, 0xCC, 0xCC, 0x62,
+  0xD1, 0xD5, 0xDE, 0xD8, 0xDD, 0xCF, 0x4B, 0x4A,
+  0x45, 0x3E, 0x2D, 0xCB, 0xDC, 0xDE, 0xD8, 0xD5,
+  0x60, 0x54, 0x51, 0x4C, 0x4D, 0x5C, 0xCC, 0xCE,
+  0x5A, 0x2C, 0x50, 0x53, 0x3E, 0x59, 0xD8, 0xF3,
+  0xF2, 0xF3, 0xF3, 0xE0, 0x5E, 0x4A, 0x4C, 0x53,
+  0x5E, 0x63, 0xCC, 0xCC, 0xCC, 0xCD, 0xCF, 0xD3,
+  0x62, 0x53, 0xD6, 0xD6, 0xD6, 0xD6, 0x5B, 0x48,
+  0x64, 0x63, 0x59, 0x44, 0x57, 0x63, 0xD2, 0xD3,
+  0xD0, 0x5E, 0xD0, 0xD1, 0xCB, 0x58, 0x4C, 0xCF,
+  0xCF, 0xCE, 0xCE, 0x57, 0x63, 0xCC, 0xCD, 0x57,
+};
+
diff --git a/drivers/sgi/char/newport.c b/drivers/sgi/char/newport.c
index 756aec709..e617ddd99 100644
--- a/drivers/sgi/char/newport.c
+++ b/drivers/sgi/char/newport.c
@@ -215,3 +215,220 @@ newport_ioctl (int card, int cmd, unsigned long arg)
 	}
 	return -EINVAL;
 }
+/*
+ * newport.c: context switching the newport graphics card and
+ *            newport graphics support.
+ *
+ * Author: Miguel de Icaza
+ */
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <asm/types.h>
+#include <asm/gfx.h>
+#include <asm/ng1.h>
+#include <asm/uaccess.h>
+#include "newport.h"
+
+/* Kernel routines for supporting graphics context switching */
+
+void newport_save (void *y)
+{
+	newport_ctx *x = y;
+	newport_wait ();
+
+#define LOAD(val) x->val = npregs->set.val;
+#define LOADI(val) x->val = npregs->set.val.i;
+#define LOADC(val) x->val = npregs->cset.val;
+	
+	LOAD(drawmode1);
+	LOAD(drawmode0);
+	LOAD(lsmode);
+	LOAD(lspattern);
+	LOAD(lspatsave);
+	LOAD(zpattern);
+	LOAD(colorback);
+	LOAD(colorvram);
+	LOAD(alpharef);
+	LOAD(smask0x);
+	LOAD(smask0y);
+	LOADI(_xstart);
+	LOADI(_ystart);
+	LOADI(_xend);
+	LOADI(_yend);
+	LOAD(xsave);
+	LOAD(xymove);
+	LOADI(bresd);
+	LOADI(bress1);
+	LOAD(bresoctinc1);
+	LOAD(bresrndinc2);
+	LOAD(brese1);
+	LOAD(bress2);
+	LOAD(aweight0);
+	LOAD(aweight1);
+	LOADI(colorred);
+	LOADI(coloralpha);
+	LOADI(colorgrn);
+	LOADI(colorblue);
+	LOADI(slopered);
+	LOADI(slopealpha);
+	LOADI(slopegrn);
+	LOADI(slopeblue);
+	LOAD(wrmask);
+	LOAD(hostrw0);
+	LOAD(hostrw1);
+	
+        /* configregs */
+	
+	LOADC(smask1x);
+	LOADC(smask1y);
+	LOADC(smask2x);
+	LOADC(smask2y);
+	LOADC(smask3x);
+	LOADC(smask3y);
+	LOADC(smask4x);
+	LOADC(smask4y);
+	LOADC(topscan);
+	LOADC(xywin);
+	LOADC(clipmode);
+	LOADC(config);
+
+	/* Mhm, maybe I am missing something, but it seems that
+	 * saving/restoring the DCB is only a matter of saving these
+	 * registers
+	 */
+
+	newport_bfwait ();
+	LOAD (dcbmode);
+	newport_bfwait ();
+	x->dcbdata0 = npregs->set.dcbdata0.all;
+	newport_bfwait ();
+	LOAD(dcbdata1);
+}
+
+/*
+ * Importat things to keep in mind when restoring the newport context:
+ *
+ * 1. slopered register is stored as a 2's complete (s12.11);
+ *    needs to be converted to a signed magnitude (s(8)12.11).
+ *
+ * 2. xsave should be stored after xstart.
+ *
+ * 3. None of the registers should be written with the GO address.
+ *    (read the docs for more details on this).
+ */
+void newport_restore (void *y)
+{
+	newport_ctx *x = y;
+#define STORE(val) npregs->set.val = x->val
+#define STOREI(val) npregs->set.val.i = x->val
+#define STOREC(val) npregs->cset.val = x->val
+	newport_wait ();
+	
+	STORE(drawmode1);
+	STORE(drawmode0);
+	STORE(lsmode);
+	STORE(lspattern);
+	STORE(lspatsave);
+	STORE(zpattern);
+	STORE(colorback);
+	STORE(colorvram);
+	STORE(alpharef);
+	STORE(smask0x);
+	STORE(smask0y);
+	STOREI(_xstart);
+	STOREI(_ystart);
+	STOREI(_xend);
+	STOREI(_yend);
+	STORE(xsave);
+	STORE(xymove);
+	STOREI(bresd);
+	STOREI(bress1);
+	STORE(bresoctinc1);
+	STORE(bresrndinc2);
+	STORE(brese1);
+	STORE(bress2);
+	STORE(aweight0);
+	STORE(aweight1);
+	STOREI(colorred);
+	STOREI(coloralpha);
+	STOREI(colorgrn);
+	STOREI(colorblue);
+	STOREI(slopered);
+	STOREI(slopealpha);
+	STOREI(slopegrn);
+	STOREI(slopeblue);
+	STORE(wrmask);
+	STORE(hostrw0);
+	STORE(hostrw1);
+	
+        /* configregs */
+	
+	STOREC(smask1x);
+	STOREC(smask1y);
+	STOREC(smask2x);
+	STOREC(smask2y);
+	STOREC(smask3x);
+	STOREC(smask3y);
+	STOREC(smask4x);
+	STOREC(smask4y);
+	STOREC(topscan);
+	STOREC(xywin);
+	STOREC(clipmode);
+	STOREC(config);
+
+	/* FIXME: restore dcb thingies */
+}
+
+int
+newport_ioctl (int card, int cmd, unsigned long arg)
+{
+	switch (cmd){
+	case NG1_SETDISPLAYMODE: {
+		int i;
+		struct ng1_setdisplaymode_args request;
+		
+		if (copy_from_user (&request, (void *) arg, sizeof (request)))
+			return -EFAULT;
+
+		newport_wait ();
+		newport_bfwait ();
+		npregs->set.dcbmode = DCB_XMAP0 | XM9_CRS_FIFO_AVAIL |
+			DCB_DATAWIDTH_1 | R_DCB_XMAP9_PROTOCOL;
+		xmap9FIFOWait (npregs);
+		
+		/* FIXME: timing is wrong, just be extracted from 
+		 * the per-board timing table.  I still have to figure
+		 * out where this comes from
+		 *
+		 * This is used to select the protocol used to talk to
+		 * the xmap9.  For now I am using 60, selecting the
+		 * WSLOW_DCB_XMAP9_PROTOCOL.
+		 *
+		 * Robert Tray comments on this issue:
+		 *
+		 * cfreq refers to the frequency of the monitor
+		 * (ie. the refresh rate).  Our monitors run typically
+		 * between 60 Hz and 76 Hz.  But it will be as low as
+		 * 50 Hz if you're displaying NTSC/PAL and as high as
+		 * 120 Hz if you are runining in stereo mode.  You
+		 * might want to try the WSLOW values.
+		 */
+		xmap9SetModeReg (npregs, request.wid, request.mode, 60);
+		return 0;
+	}
+	case NG1_SET_CURSOR_HOTSPOT: {
+		struct ng1_set_cursor_hotspot request;
+		
+		if (copy_from_user (&request, (void *) arg, sizeof (request)))
+			return -EFAULT;
+		/* FIXME: make request.xhot, request.yhot the hot spot */
+		return 0;
+	}
+	
+	case NG1_SETGAMMARAMP0:
+		/* FIXME: load the gamma ramps :-) */
+		return 0;
+
+	}
+	return -EINVAL;
+}
diff --git a/drivers/sgi/char/newport.h b/drivers/sgi/char/newport.h
index 2f9f044cb..6ad987045 100644
--- a/drivers/sgi/char/newport.h
+++ b/drivers/sgi/char/newport.h
@@ -1,4 +1,589 @@
-/* $Id: newport.h,v 1.4 1997/08/28 01:45:17 miguel Exp $
+/* $Id: newport.h,v 1.2 1996/06/10 16:38:34 dm Exp $
+ * newport.h: Defines and register layout for NEWPORT graphics
+ *            hardware.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ */
+
+#ifndef _SGI_NEWPORT_H
+#define _SGI_NEWPORT_H
+
+
+typedef volatile unsigned long npireg_t;
+
+union npfloat {
+	volatile float f;
+	npireg_t       i;
+};
+
+typedef union npfloat npfreg_t;
+
+union np_dcb {
+	npireg_t all;
+	struct { volatile unsigned short s0, s1; } hwords;
+	struct { volatile unsigned char b0, b1, b2, b3; } bytes;
+};
+
+struct newport_rexregs {
+	npireg_t drawmode1;      /* GL extra mode bits */
+	
+#define DM1_PLANES         0x00000007
+#define    DM1_NOPLANES    0x00000000
+#define    DM1_RGBPLANES   0x00000001
+#define    DM1_RGBAPLANES  0x00000002
+#define    DM1_OLAYPLANES  0x00000004
+#define    DM1_PUPPLANES   0x00000005
+#define    DM1_CIDPLANES   0x00000006
+	
+#define NPORT_DMODE1_DDMASK      0x00000018
+#define NPORT_DMODE1_DD4         0x00000000
+#define NPORT_DMODE1_DD8         0x00000008
+#define NPORT_DMODE1_DD12        0x00000010
+#define NPORT_DMODE1_DD24        0x00000018
+#define NPORT_DMODE1_DSRC        0x00000020
+#define NPORT_DMODE1_YFLIP       0x00000040
+#define NPORT_DMODE1_RWPCKD      0x00000080
+#define NPORT_DMODE1_HDMASK      0x00000300
+#define NPORT_DMODE1_HD4         0x00000000
+#define NPORT_DMODE1_HD8         0x00000100
+#define NPORT_DMODE1_HD12        0x00000200
+#define NPORT_DMODE1_HD32        0x00000300
+#define NPORT_DMODE1_RWDBL       0x00000400
+#define NPORT_DMODE1_ESWAP       0x00000800 /* Endian swap */
+#define NPORT_DMODE1_CCMASK      0x00007000
+#define NPORT_DMODE1_CCLT        0x00001000
+#define NPORT_DMODE1_CCEQ        0x00002000
+#define NPORT_DMODE1_CCGT        0x00004000
+#define NPORT_DMODE1_RGBMD       0x00008000
+#define NPORT_DMODE1_DENAB       0x00010000 /* Dither enable */
+#define NPORT_DMODE1_FCLR        0x00020000 /* Fast clear */
+#define NPORT_DMODE1_BENAB       0x00040000 /* Blend enable */
+#define NPORT_DMODE1_SFMASK      0x00380000
+#define NPORT_DMODE1_SF0         0x00000000
+#define NPORT_DMODE1_SF1         0x00080000
+#define NPORT_DMODE1_SFDC        0x00100000
+#define NPORT_DMODE1_SFMDC       0x00180000
+#define NPORT_DMODE1_SFSA        0x00200000
+#define NPORT_DMODE1_SFMSA       0x00280000
+#define NPORT_DMODE1_DFMASK      0x01c00000
+#define NPORT_DMODE1_DF0         0x00000000
+#define NPORT_DMODE1_DF1         0x00400000
+#define NPORT_DMODE1_DFSC        0x00800000
+#define NPORT_DMODE1_DFMSC       0x00c00000
+#define NPORT_DMODE1_DFSA        0x01000000
+#define NPORT_DMODE1_DFMSA       0x01400000
+#define NPORT_DMODE1_BBENAB      0x02000000 /* Back blend enable */
+#define NPORT_DMODE1_PFENAB      0x04000000 /* Pre-fetch enable */
+#define NPORT_DMODE1_ABLEND      0x08000000 /* Alpha blend */
+#define NPORT_DMODE1_LOMASK      0xf0000000
+#define NPORT_DMODE1_LOZERO      0x00000000
+#define NPORT_DMODE1_LOAND       0x10000000
+#define NPORT_DMODE1_LOANDR      0x20000000
+#define NPORT_DMODE1_LOSRC       0x30000000
+#define NPORT_DMODE1_LOANDI      0x40000000
+#define NPORT_DMODE1_LODST       0x50000000
+#define NPORT_DMODE1_LOXOR       0x60000000
+#define NPORT_DMODE1_LOOR        0x70000000
+#define NPORT_DMODE1_LONOR       0x80000000
+#define NPORT_DMODE1_LOXNOR      0x90000000
+#define NPORT_DMODE1_LONDST      0xa0000000
+#define NPORT_DMODE1_LOORR       0xb0000000
+#define NPORT_DMODE1_LONSRC      0xc0000000
+#define NPORT_DMODE1_LOORI       0xd0000000
+#define NPORT_DMODE1_LONAND      0xe0000000
+#define NPORT_DMODE1_LOONE       0xf0000000
+
+	npireg_t drawmode0;      /* REX command register */
+
+	/* These bits define the graphics opcode being performed. */
+#define NPORT_DMODE0_OPMASK   0x00000003 /* Opcode mask */
+#define NPORT_DMODE0_NOP      0x00000000 /* No operation */
+#define NPORT_DMODE0_RD       0x00000001 /* Read operation */
+#define NPORT_DMODE0_DRAW     0x00000002 /* Draw operation */
+#define NPORT_DMODE0_S2S      0x00000003 /* Screen to screen operation */
+
+	/* The following decide what addressing mode(s) are to be used */
+#define NPORT_DMODE0_AMMASK   0x0000001c /* Address mode mask */
+#define NPORT_DMODE0_SPAN     0x00000000 /* Spanning address mode */
+#define NPORT_DMODE0_BLOCK    0x00000004 /* Block address mode */
+#define NPORT_DMODE0_ILINE    0x00000008 /* Iline address mode */
+#define NPORT_DMODE0_FLINE    0x0000000c /* Fline address mode */
+#define NPORT_DMODE0_ALINE    0x00000010 /* Aline address mode */
+#define NPORT_DMODE0_TLINE    0x00000014 /* Tline address mode */
+#define NPORT_DMODE0_BLINE    0x00000018 /* Bline address mode */
+
+	/* And now some misc. operation control bits. */
+#define NPORT_DMODE0_DOSETUP  0x00000020
+#define NPORT_DMODE0_CHOST    0x00000040
+#define NPORT_DMODE0_AHOST    0x00000080
+#define NPORT_DMODE0_STOPX    0x00000100
+#define NPORT_DMODE0_STOPY    0x00000200
+#define NPORT_DMODE0_SK1ST    0x00000400
+#define NPORT_DMODE0_SKLST    0x00000800
+#define NPORT_DMODE0_ZPENAB   0x00001000
+#define NPORT_DMODE0_LISPENAB 0x00002000
+#define NPORT_DMODE0_LISLST   0x00004000
+#define NPORT_DMODE0_L32      0x00008000
+#define NPORT_DMODE0_ZOPQ     0x00010000
+#define NPORT_DMODE0_LISOPQ   0x00020000
+#define NPORT_DMODE0_SHADE    0x00040000
+#define NPORT_DMODE0_LRONLY   0x00080000
+#define NPORT_DMODE0_XYOFF    0x00100000
+#define NPORT_DMODE0_CLAMP    0x00200000
+#define NPORT_DMODE0_ENDPF    0x00400000
+#define NPORT_DMODE0_YSTR     0x00800000
+
+	npireg_t lsmode;      /* Mode for line stipple ops */
+	npireg_t lspattern;   /* Pattern for line stipple ops */
+	npireg_t lspatsave;   /* Backup save pattern */
+	npireg_t zpattern;    /* Pixel zpattern */
+	npireg_t colorback;   /* Background color */
+	npireg_t colorvram;   /* Clear color for fast vram */
+	npireg_t alpharef;    /* Reference value for afunctions */
+	unsigned long pad0;
+	npireg_t smask0x;     /* Window GL relative screen mask 0 */
+	npireg_t smask0y;     /* Window GL relative screen mask 0 */
+	npireg_t _setup;
+	npireg_t _stepz;
+	npireg_t _lsrestore;
+	npireg_t _lssave;
+
+	unsigned long _pad1[0x30];
+
+	/* Iterators, full state for context switch */
+	npfreg_t _xstart;	/* X-start point (current) */
+	npfreg_t _ystart;	/* Y-start point (current) */
+	npfreg_t _xend;		/* x-end point */
+	npfreg_t _yend;		/* y-end point */
+	npireg_t xsave;		/* copy of xstart integer value for BLOCk addressing MODE */
+	npireg_t xymove;	/* x.y offset from xstart, ystart for relative operations */
+	npfreg_t bresd;
+	npfreg_t bress1;;
+	npireg_t bresoctinc1;
+	volatile int bresrndinc2;
+	npireg_t brese1;
+	npireg_t bress2;
+	npireg_t aweight0;
+	npireg_t aweight1;
+	npfreg_t xstartf;
+	npfreg_t ystartf;
+	npfreg_t xendf;
+	npfreg_t yendf;
+	npireg_t xstarti;
+	npfreg_t xendf1;
+	npireg_t xystarti;
+	npireg_t xyendi;
+	npireg_t xstartendi;
+
+	unsigned long _unused2[0x29];
+
+	npfreg_t colorred;
+	npfreg_t coloralpha;
+	npfreg_t colorgrn;
+	npfreg_t colorblue;
+	npfreg_t slopered;
+	npfreg_t slopealpha;
+	npfreg_t slopegrn;
+	npfreg_t slopeblue;
+	npireg_t wrmask;
+	npireg_t colori;
+	npfreg_t colorx;
+	npfreg_t slopered1;
+	npireg_t hostrw0;
+	npireg_t hostrw1;
+	npireg_t dcbmode;
+#define NPORT_DMODE_WMASK   0x00000003
+#define NPORT_DMODE_W4      0x00000000
+#define NPORT_DMODE_W1      0x00000001
+#define NPORT_DMODE_W2      0x00000002
+#define NPORT_DMODE_W3      0x00000003
+#define NPORT_DMODE_EDPACK  0x00000004
+#define NPORT_DMODE_ECINC   0x00000008
+#define NPORT_DMODE_CMASK   0x00000070
+#define NPORT_DMODE_AMASK   0x00000780
+#define NPORT_DMODE_AVC2    0x00000000
+#define NPORT_DMODE_ACMALL  0x00000080
+#define NPORT_DMODE_ACM0    0x00000100
+#define NPORT_DMODE_ACM1    0x00000180
+#define NPORT_DMODE_AXMALL  0x00000200
+#define NPORT_DMODE_AXM0    0x00000280
+#define NPORT_DMODE_AXM1    0x00000300
+#define NPORT_DMODE_ABT     0x00000380
+#define NPORT_DMODE_AVCC1   0x00000400
+#define NPORT_DMODE_AVAB1   0x00000480
+#define NPORT_DMODE_ALG3V0  0x00000500
+#define NPORT_DMODE_A1562   0x00000580
+#define NPORT_DMODE_ESACK   0x00000800
+#define NPORT_DMODE_EASACK  0x00001000
+#define NPORT_DMODE_CWMASK  0x0003e000
+#define NPORT_DMODE_CHMASK  0x007c0000
+#define NPORT_DMODE_CSMASK  0x0f800000
+#define NPORT_DMODE_SENDIAN 0x10000000
+
+	unsigned long _unused3;
+
+	union np_dcb dcbdata0;
+	npireg_t dcbdata1;
+};
+
+struct newport_cregs {
+	npireg_t smask1x;
+	npireg_t smask1y;
+	npireg_t smask2x;
+	npireg_t smask2y;
+	npireg_t smask3x;
+	npireg_t smask3y;
+	npireg_t smask4x;
+	npireg_t smask4y;
+	npireg_t topscan;
+	npireg_t xywin;
+	npireg_t clipmode;
+#define NPORT_CMODE_SM0   0x00000001
+#define NPORT_CMODE_SM1   0x00000002
+#define NPORT_CMODE_SM2   0x00000004
+#define NPORT_CMODE_SM3   0x00000008
+#define NPORT_CMODE_SM4   0x00000010
+#define NPORT_CMODE_CMSK  0x00001e00
+
+	unsigned long _unused0;
+	unsigned long config;
+#define NPORT_CFG_G32MD   0x00000001
+#define NPORT_CFG_BWIDTH  0x00000002
+#define NPORT_CFG_ERCVR   0x00000004
+#define NPORT_CFG_BDMSK   0x00000078
+#define NPORT_CFG_GDMSK   0x00000f80
+#define NPORT_CFG_GD0     0x00000080
+#define NPORT_CFG_GD1     0x00000100
+#define NPORT_CFG_GD2     0x00000200
+#define NPORT_CFG_GD3     0x00000400
+#define NPORT_CFG_GD4     0x00000800
+#define NPORT_CFG_GFAINT  0x00001000
+#define NPORT_CFG_TOMSK   0x0000e000
+#define NPORT_CFG_VRMSK   0x00070000
+#define NPORT_CFG_FBTYP   0x00080000
+
+	npireg_t _unused1;
+	npireg_t stat;
+#define NPORT_STAT_VERS   0x00000007
+#define NPORT_STAT_GBUSY  0x00000008
+#define NPORT_STAT_BBUSY  0x00000010
+#define NPORT_STAT_VRINT  0x00000020
+#define NPORT_STAT_VIDINT 0x00000040
+#define NPORT_STAT_GLMSK  0x00001f80
+#define NPORT_STAT_BLMSK  0x0007e000
+#define NPORT_STAT_BFIRQ  0x00080000
+#define NPORT_STAT_GFIRQ  0x00100000
+
+	npireg_t ustat;
+	npireg_t dreset;
+};
+
+struct newport_regs {
+	struct newport_rexregs set;
+	unsigned long _unused0[0x16e];
+	struct newport_rexregs go;
+	unsigned long _unused1[0x22e];
+	struct newport_cregs cset;
+	unsigned long _unused2[0x1ef];
+	struct newport_cregs cgo;
+};
+extern struct newport_regs *npregs;
+
+
+typedef struct {
+	unsigned int drawmode1;
+	unsigned int drawmode0;
+	unsigned int lsmode;   
+	unsigned int lspattern;
+	unsigned int lspatsave;
+	unsigned int zpattern; 
+	unsigned int colorback;
+	unsigned int colorvram;
+	unsigned int alpharef; 
+	unsigned int smask0x;  
+	unsigned int smask0y;  
+	unsigned int _xstart;  
+	unsigned int _ystart;  
+	unsigned int _xend;    
+	unsigned int _yend;    
+	unsigned int xsave;    
+	unsigned int xymove;   
+	unsigned int bresd;    
+	unsigned int bress1;   
+	unsigned int bresoctinc1;
+	unsigned int bresrndinc2;
+	unsigned int brese1;     
+	unsigned int bress2;     
+	
+	unsigned int aweight0;    
+	unsigned int aweight1;    
+	unsigned int colorred;    
+	unsigned int coloralpha;  
+	unsigned int colorgrn;    
+	unsigned int colorblue;   
+	unsigned int slopered;    
+	unsigned int slopealpha;  
+	unsigned int slopegrn;    
+	unsigned int slopeblue;   
+	unsigned int wrmask;      
+	unsigned int hostrw0;     
+	unsigned int hostrw1;     
+	
+        /* configregs */
+	
+	unsigned int smask1x;    
+	unsigned int smask1y;    
+	unsigned int smask2x;    
+	unsigned int smask2y;    
+	unsigned int smask3x;    
+	unsigned int smask3y;    
+	unsigned int smask4x;    
+	unsigned int smask4y;    
+	unsigned int topscan;    
+	unsigned int xywin;      
+	unsigned int clipmode;   
+	unsigned int config;     
+	
+        /* dcb registers */
+	unsigned int dcbmode;   
+	unsigned int dcbdata0;  
+	unsigned int dcbdata1;
+} newport_ctx;
+
+/* Reading/writing VC2 registers. */
+#define VC2_REGADDR_INDEX      0x00000000
+#define VC2_REGADDR_IREG       0x00000010
+#define VC2_REGADDR_RAM        0x00000030
+#define VC2_PROTOCOL           (NPORT_DMODE_EASACK | 0x00800000 | 0x00040000)
+
+#define VC2_VLINET_ADDR        0x000
+#define VC2_VFRAMET_ADDR       0x400
+#define VC2_CGLYPH_ADDR        0x500
+
+/* Now the Indexed registers of the VC2. */
+#define VC2_IREG_VENTRY        0x00
+#define VC2_IREG_CENTRY        0x01
+#define VC2_IREG_CURSX         0x02
+#define VC2_IREG_CURSY         0x03
+#define VC2_IREG_CCURSX        0x04
+#define VC2_IREG_DENTRY        0x05
+#define VC2_IREG_SLEN          0x06
+#define VC2_IREG_RADDR         0x07
+#define VC2_IREG_VFPTR         0x08
+#define VC2_IREG_VLSPTR        0x09
+#define VC2_IREG_VLIR          0x0a
+#define VC2_IREG_VLCTR         0x0b
+#define VC2_IREG_CTPTR         0x0c
+#define VC2_IREG_WCURSY        0x0d
+#define VC2_IREG_DFPTR         0x0e
+#define VC2_IREG_DLTPTR        0x0f
+#define VC2_IREG_CONTROL       0x10
+#define VC2_IREG_CONFIG        0x20
+
+extern inline void newport_vc2_set(struct newport_regs *regs, unsigned char vc2ireg,
+				   unsigned short val)
+{
+	regs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_INDEX | NPORT_DMODE_W3 |
+			   NPORT_DMODE_ECINC | VC2_PROTOCOL);
+	regs->set.dcbdata0.all = (vc2ireg << 24) | (val << 8);
+}
+
+extern inline unsigned short newport_vc2_get(struct newport_regs *regs,
+					     unsigned char vc2ireg)
+{
+	regs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_INDEX | NPORT_DMODE_W1 |
+			   NPORT_DMODE_ECINC | VC2_PROTOCOL);
+	regs->set.dcbdata0.bytes.b3 = vc2ireg;
+	regs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_IREG | NPORT_DMODE_W2 |
+			   NPORT_DMODE_ECINC | VC2_PROTOCOL);
+	return regs->set.dcbdata0.hwords.s1;
+}
+
+/* VC2 Control register bits */
+#define VC2_CTRL_EVIRQ     0x0001
+#define VC2_CTRL_EDISP     0x0002
+#define VC2_CTRL_EVIDEO    0x0004
+#define VC2_CTRL_EDIDS     0x0008
+#define VC2_CTRL_ECURS     0x0010
+#define VC2_CTRL_EGSYNC    0x0020
+#define VC2_CTRL_EILACE    0x0040
+#define VC2_CTRL_ECDISP    0x0080
+#define VC2_CTRL_ECCURS    0x0100
+#define VC2_CTRL_ECG64     0x0200
+#define VC2_CTRL_GLSEL     0x0400
+
+/* Controlling the color map on NEWPORT. */
+#define NCMAP_REGADDR_AREG   0x00000000
+#define NCMAP_REGADDR_ALO    0x00000000
+#define NCMAP_REGADDR_AHI    0x00000010
+#define NCMAP_REGADDR_PBUF   0x00000020
+#define NCMAP_REGADDR_CREG   0x00000030
+#define NCMAP_REGADDR_SREG   0x00000040
+#define NCMAP_REGADDR_RREG   0x00000060
+#define NCMAP_PROTOCOL       (0x00008000 | 0x00040000 | 0x00800000)
+
+static inline void newport_cmap_setaddr(struct newport_regs *regs,
+					unsigned short addr)
+{
+	regs->set.dcbmode = (NPORT_DMODE_ACMALL | NCMAP_PROTOCOL |
+			   NPORT_DMODE_SENDIAN | NPORT_DMODE_ECINC |
+			   NCMAP_REGADDR_AREG | NPORT_DMODE_W2);
+	regs->set.dcbdata0.hwords.s1 = addr;
+	regs->set.dcbmode = (NPORT_DMODE_ACMALL | NCMAP_PROTOCOL |
+			   NCMAP_REGADDR_PBUF | NPORT_DMODE_W3);
+}
+
+static inline void newport_cmap_setrgb(struct newport_regs *regs,
+				       unsigned char red,
+				       unsigned char green,
+				       unsigned char blue)
+{
+	regs->set.dcbdata0.all =
+		(red << 24) |
+		(green << 16) |
+		(blue << 8);
+}
+
+/* Miscellaneous NEWPORT routines. */
+#define BUSY_TIMEOUT 100000
+static inline int newport_wait(void)
+{
+	int i = 0;
+
+	while(i < BUSY_TIMEOUT)
+		if(!(npregs->cset.stat & NPORT_STAT_GBUSY))
+			break;
+	if(i == BUSY_TIMEOUT)
+		return 1;
+	return 0;
+}
+
+static inline int newport_bfwait(void)
+{
+	int i = 0;
+
+	while(i < BUSY_TIMEOUT)
+		if(!(npregs->cset.stat & NPORT_STAT_BBUSY))
+			break;
+	if(i == BUSY_TIMEOUT)
+		return 1;
+	return 0;
+}
+
+/* newport.c and cons_newport.c routines */
+extern struct graphics_ops *newport_probe (int, const char **);
+
+void newport_save    (void *);
+void newport_restore (void *);
+void newport_reset   (void);
+int  newport_ioctl   (int card, int cmd, unsigned long arg);
+
+/*
+ * DCBMODE register defines:
+ */
+
+/* Widht of the data being transfered for each DCBDATA[01] word */
+#define DCB_DATAWIDTH_4 0x0
+#define DCB_DATAWIDTH_1 0x1
+#define DCB_DATAWIDTH_2 0x2
+#define DCB_DATAWIDTH_3 0x3
+
+/* If set, all of DCBDATA will be moved, otherwise only DATAWIDTH bytes */
+#define DCB_ENDATAPACK   (1 << 2)
+
+/* Enables DCBCRS auto increment after each DCB transfer */
+#define DCB_ENCRSINC     (1 << 3)
+
+/* shift for accessing the control register select address (DBCCRS, 3 bits) */
+#define DCB_CRS_SHIFT    4
+
+/* DCBADDR (4 bits): display bus slave address */
+#define DCB_ADDR_SHIFT   7
+#define DCB_VC2          (0 <<  DCB_ADDR_SHIFT)
+#define DCB_CMAP_ALL     (1 <<  DCB_ADDR_SHIFT)
+#define DCB_CMAP0        (2 <<  DCB_ADDR_SHIFT)
+#define DCB_CMAP1        (3 <<  DCB_ADDR_SHIFT)
+#define DCB_XMAP_ALL     (4 <<  DCB_ADDR_SHIFT)
+#define DCB_XMAP0        (5 <<  DCB_ADDR_SHIFT)
+#define DCB_XMAP1        (6 <<  DCB_ADDR_SHIFT)
+#define DCB_BT445        (7 <<  DCB_ADDR_SHIFT)
+#define DCB_VCC1         (8 <<  DCB_ADDR_SHIFT)
+#define DCB_VAB1         (9 <<  DCB_ADDR_SHIFT)
+#define DCB_LG3_BDVERS0  (10 << DCB_ADDR_SHIFT)
+#define DCB_LG3_ICS1562  (11 << DCB_ADDR_SHIFT)
+#define DCB_RESERVED     (15 << DCB_ADDR_SHIFT)
+
+/* DCB protocol ack types */
+#define DCB_ENSYNCACK    (1 << 11)
+#define DCB_ENASYNCACK   (1 << 12)
+
+#define DCB_CSWIDTH_SHIFT 13
+#define DCB_CSHOLD_SHIFT  18
+#define DCB_CSSETUP_SHIFT 23
+
+/* XMAP9 specific defines */
+/*   XMAP9 -- registers as seen on the DCBMODE register*/
+#   define XM9_CRS_CONFIG            (0 << DCB_CRS_SHIFT)
+#       define XM9_PUPMODE           (1 << 0)
+#       define XM9_ODD_PIXEL         (1 << 1)
+#       define XM9_8_BITPLANES       (1 << 2)
+#       define XM9_SLOW_DCB          (1 << 3)
+#       define XM9_VIDEO_RGBMAP_MASK (3 << 4)
+#       define XM9_EXPRESS_VIDEO     (1 << 6)
+#       define XM9_VIDEO_OPTION      (1 << 7)
+#   define XM9_CRS_REVISION          (1 << DCB_CRS_SHIFT)
+#   define XM9_CRS_FIFO_AVAIL        (2 << DCB_CRS_SHIFT)
+#       define XM9_FIFO_0_AVAIL      0
+#       define XM9_FIFO_1_AVAIL      1
+#       define XM9_FIFO_2_AVAIL      3
+#       define XM9_FIFO_3_AVAIL      2
+#       define XM9_FIFO_FULL         XM9_FIFO_0_AVAIL
+#       define XM9_FIFO_EMPTY        XM9_FIFO_3_AVAIL
+#   define XM9_CRS_CURS_CMAP_MSB     (3 << DCB_CRS_SHIFT)
+#   define XM9_CRS_PUP_CMAP_MSB      (4 << DCB_CRS_SHIFT)
+#   define XM9_CRS_MODE_REG_DATA     (5 << DCB_CRS_SHIFT)
+#   define XM9_CRS_MODE_REG_INDEX    (7 << DCB_CRS_SHIFT)
+
+
+#define DCB_CYCLES(setup,hold,width)                \
+                  ((hold << DCB_CSHOLD_SHIFT)  |    \
+		   (setup << DCB_CSSETUP_SHIFT)|    \
+		   (width << DCB_CSWIDTH_SHIFT))
+
+#define W_DCB_XMAP9_PROTOCOL       DCB_CYCLES (2, 1, 0)
+#define WSLOW_DCB_XMAP9_PROTOCOL   DCB_CYCLES (5, 5, 0)
+#define WAYSLOW_DCB_XMAP9_PROTOCOL DCB_CYCLES (12, 12, 0)
+#define R_DCB_XMAP9_PROTOCOL       DCB_CYCLES (2, 1, 3)
+
+static inline void
+xmap9FIFOWait (struct newport_regs *rex)
+{
+        rex->set.dcbmode = DCB_XMAP0 | XM9_CRS_FIFO_AVAIL |
+		DCB_DATAWIDTH_1 | R_DCB_XMAP9_PROTOCOL;
+        newport_bfwait ();
+	
+        while ((rex->set.dcbdata0.bytes.b3 & 3) != XM9_FIFO_EMPTY)
+		;
+}
+
+static inline void
+xmap9SetModeReg (struct newport_regs *rex, unsigned int modereg, unsigned int data24, int cfreq)
+{
+        if (cfreq > 119)
+            rex->set.dcbmode = DCB_XMAP_ALL | XM9_CRS_MODE_REG_DATA |
+                        DCB_DATAWIDTH_4 | W_DCB_XMAP9_PROTOCOL;
+        else if (cfreq > 59)
+            rex->set.dcbmode = DCB_XMAP_ALL | XM9_CRS_MODE_REG_DATA |
+		    DCB_DATAWIDTH_4 | WSLOW_DCB_XMAP9_PROTOCOL;    
+        else
+            rex->set.dcbmode = DCB_XMAP_ALL | XM9_CRS_MODE_REG_DATA |
+                        DCB_DATAWIDTH_4 | WAYSLOW_DCB_XMAP9_PROTOCOL; 
+        rex->set.dcbdata0.all = ((modereg) << 24) | (data24 & 0xffffff);
+}
+
+#endif /* !(_SGI_NEWPORT_H) */
+
+/* $Id: newport.h,v 1.5 1997/09/21 23:06:05 miguel Exp $
  * newport.h: Defines and register layout for NEWPORT graphics
  *            hardware.
  *
diff --git a/drivers/sgi/char/rrm.c b/drivers/sgi/char/rrm.c
index b13c79588..507299354 100644
--- a/drivers/sgi/char/rrm.c
+++ b/drivers/sgi/char/rrm.c
@@ -67,3 +67,72 @@ rrm_close (struct inode *inode, struct file *file)
 	return 0;
 }
 
+/*
+ * Linux Rendering Resource Manager 
+ *
+ *          Implements the SGI-compatible rendering resource manager.
+ *          This takes care of implementing the virtualized video hardware
+ *          access required for OpenGL direct rendering.
+ *
+ * Author:  Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * Fixes:
+ */
+#include <asm/uaccess.h>
+#include <asm/rrm.h>
+
+int
+rrm_open_rn (int rnid, void *arg)
+{
+	return 0;
+}
+
+int
+rrm_close_rn (int rnid, void *arg)
+{
+	return 0;
+}
+
+int
+rrm_bind_proc_to_rn (int rnid, void *arg)
+{
+	return 0;
+}
+
+typedef int (*rrm_function )(void *arg);
+
+struct {
+	int (*r_fn)(int rnid, void *arg);
+	int arg_size;
+} rrm_functions [] = {
+	{ rrm_open_rn,         sizeof (struct RRM_OpenRN) },
+	{ rrm_close_rn,        sizeof (struct RRM_CloseRN) },
+	{ rrm_bind_proc_to_rn, sizeof (struct RRM_BindProcToRN) }
+};
+
+#define RRM_FUNCTIONS (sizeof (rrm_functions)/sizeof (rrm_functions [0]))
+
+/* cmd is a number in the range [0..RRM_CMD_LIMIT-RRM_BASE] */
+int
+rrm_command (unsigned int cmd, void *arg)
+{
+	int i, rnid;
+	
+	if (cmd > RRM_FUNCTIONS){
+		printk ("Called unimplemented rrm ioctl: %d\n", cmd + RRM_BASE);
+		return -EINVAL;
+	}
+	i = verify_area (VERIFY_READ, arg, rrm_functions [cmd].arg_size);
+	if (i) return i;
+
+	__get_user_ret (rnid, (int *) arg, -EFAULT);
+	return (*(rrm_functions [cmd].r_fn))(rnid, arg);
+}
+
+int
+rrm_close (struct inode *inode, struct file *file)
+{
+	/* This routine is invoked when the device is closed */
+	return 0;
+}
+
diff --git a/drivers/sgi/char/sgicons.c b/drivers/sgi/char/sgicons.c
index 746ac93b4..069b8dbe1 100644
--- a/drivers/sgi/char/sgicons.c
+++ b/drivers/sgi/char/sgicons.c
@@ -159,6 +159,189 @@ void set_vesa_blanking(const unsigned long arg) { }
 void vesa_powerdown(void) { }
 void set_palette (void) { }
 
+extern unsigned long video_mem_base, video_screen_size, video_mem_term;
+
+__initfunc(unsigned long con_type_init(unsigned long start_mem, const char **name))
+{
+	extern int serial_console;
+
+	if (serial_console)
+		*name = "NONE";
+	else {
+		gfx_init (name);
+		printk("Video screen size is %08lx at %08lx\n",
+		       video_screen_size, start_mem);
+		video_mem_base = start_mem;
+		start_mem += (video_screen_size * 2);
+		video_mem_term = start_mem;
+	}
+	return start_mem;
+}
+
+__initfunc(void con_type_init_finish(void))
+{
+}
+/*
+ * sgicons.c: Setting up and registering console I/O on the SGI.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * This implement a virtual console interface.
+ *
+ * This should be replaced with Gert's all-singing all-dancing
+ * graphics console code in the future
+ *
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+#include "gconsole.h"
+
+/* To make psaux code cleaner */
+int aux_device_present = 0xaa;
+
+/* This is the system graphics console (the first adapter found) */
+struct console_ops *gconsole = 0;
+struct console_ops *real_gconsole = 0;
+
+void
+enable_gconsole (void)
+{
+	if (!gconsole)
+		gconsole = real_gconsole;
+}
+
+void
+disable_gconsole (void)
+{
+	if (gconsole){
+		real_gconsole = gconsole;
+		gconsole = 0;
+	}
+}
+
+void
+register_gconsole (struct console_ops *gc)
+{
+	if (gconsole)
+		return;
+	gconsole = gc;
+}
+
+void
+__set_origin (unsigned short offset)
+{
+	if (gconsole)
+		(*gconsole->set_origin)(offset);
+}
+
+void
+hide_cursor (void)
+{
+
+	if (gconsole)
+		(*gconsole->hide_cursor)();
+}
+
+void
+set_cursor (int currcons)
+{
+	if (gconsole)
+		(*gconsole->set_cursor)(currcons);
+}
+
+void
+get_scrmem (int currcons)
+{
+	if (gconsole)
+		(*gconsole->get_scrmem)(currcons);
+}
+
+void
+set_scrmem (int currcons, long offset)
+{
+	if (gconsole)
+		(*gconsole->set_scrmem)(currcons, offset);
+}
+
+int
+set_get_cmap (unsigned char *arg, int set)
+{
+	if (gconsole)
+		return (*gconsole->set_get_cmap)(arg, set);
+	return 0;
+}
+
+void
+blitc (unsigned short charattr, unsigned long addr)
+{
+	if (gconsole)
+		(*gconsole->blitc)(charattr, addr);
+}
+
+void
+memsetw (void *s, unsigned short c, unsigned int count)
+{
+	if (gconsole)
+		(*gconsole->memsetw)(s, c, count);
+}
+
+void
+memcpyw (unsigned short *to, unsigned short *from, unsigned int count)
+{
+	if (gconsole)
+		(*gconsole->memcpyw)(to, from, count);
+}
+
+int
+con_adjust_height (unsigned long fontheight)
+{
+	return -EINVAL;
+}
+
+int
+set_get_font (char *arg, int set, int ch512)
+{
+	int error, i, line;
+
+	if (!arg)
+		return -EINVAL;
+	error = verify_area (set ? VERIFY_READ : VERIFY_WRITE, (void *) arg,
+			     ch512 ? 2* cmapsz : cmapsz);
+	if (error)
+		return error;
+
+	/* download the current font */
+	if (!set) {
+		memset (arg, 0, cmapsz);
+		for (i = 0; i < 256; i++) {
+			for (line = 0; line < CHAR_HEIGHT; line++)
+				__put_user (vga_font [i], arg+(i*32+line));
+		}
+		return 0;
+	}
+	
+        /* set the font */
+	for (i = 0; i < 256; i++) {
+		for (line = 0; line < CHAR_HEIGHT; line++) {
+			__get_user(vga_font [i*CHAR_HEIGHT + line],
+			           arg + (i * 32 + line));
+		}
+	}
+	return 0;
+}
+
+/*
+ * dummy routines for the VESA blanking code, which is VGA only,
+ * so we don't have to carry that stuff around for the Sparc...  */
+void vesa_blank(void) { }
+void vesa_unblank(void) { }
+void set_vesa_blanking(const unsigned long arg) { }
+void vesa_powerdown(void) { }
+void set_palette (void) { }
+
 __initfunc(int con_is_present())
 {
 	return 1;
diff --git a/drivers/sgi/char/sgiserial.c b/drivers/sgi/char/sgiserial.c
index c8d4d7e54..b6a3effc6 100644
--- a/drivers/sgi/char/sgiserial.c
+++ b/drivers/sgi/char/sgiserial.c
@@ -1601,6 +1601,2025 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
 		if (!(info->flags & ZILOG_CALLOUT_ACTIVE) &&
 		    !(info->flags & ZILOG_CLOSING) && do_clocal)
 			break;
+		if (current->signal & ~current->blocked) {
+			retval = -ERESTARTSYS;
+			break;
+		}
+#ifdef SERIAL_DEBUG_OPEN
+		printk("block_til_ready blocking: ttys%d, count = %d\n",
+		       info->line, info->count);
+#endif
+		schedule();
+	}
+	current->state = TASK_RUNNING;
+	remove_wait_queue(&info->open_wait, &wait);
+	if (!tty_hung_up_p(filp))
+		info->count++;
+	info->blocked_open--;
+#ifdef SERIAL_DEBUG_OPEN
+	printk("block_til_ready after blocking: ttys%d, count = %d\n",
+	       info->line, info->count);
+#endif
+	if (retval)
+		return retval;
+	info->flags |= ZILOG_NORMAL_ACTIVE;
+	return 0;
+}	
+
+/*
+ * This routine is called whenever a serial port is opened.  It
+ * enables interrupts for a serial port, linking in its ZILOG structure into
+ * the IRQ chain.   It also performs the serial-specific
+ * initialization for the tty structure.
+ */
+int rs_open(struct tty_struct *tty, struct file * filp)
+{
+	struct sgi_serial	*info;
+	int 			retval, line;
+
+	line = MINOR(tty->device) - tty->driver.minor_start;
+	/* The zilog lines for the mouse/keyboard must be
+	 * opened using their respective drivers.
+	 */
+	if ((line < 0) || (line >= NUM_CHANNELS))
+		return -ENODEV;
+	info = zs_soft + line;
+	/* Is the kgdb running over this line? */
+	if (info->kgdb_channel)
+		return -ENODEV;
+	if (serial_paranoia_check(info, tty->device, "rs_open"))
+		return -ENODEV;
+#ifdef SERIAL_DEBUG_OPEN
+	printk("rs_open %s%d, count = %d\n", tty->driver.name, info->line,
+	       info->count);
+#endif
+	info->count++;
+	tty->driver_data = info;
+	info->tty = tty;
+
+	/*
+	 * Start up serial port
+	 */
+	retval = startup(info);
+	if (retval)
+		return retval;
+
+	retval = block_til_ready(tty, filp, info);
+	if (retval) {
+#ifdef SERIAL_DEBUG_OPEN
+		printk("rs_open returning after block_til_ready with %d\n",
+		       retval);
+#endif
+		return retval;
+	}
+
+	if ((info->count == 1) && (info->flags & ZILOG_SPLIT_TERMIOS)) {
+		if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
+			*tty->termios = info->normal_termios;
+		else 
+			*tty->termios = info->callout_termios;
+		change_speed(info);
+	}
+
+	info->session = current->session;
+	info->pgrp = current->pgrp;
+
+#ifdef SERIAL_DEBUG_OPEN
+	printk("rs_open ttys%d successful...", info->line);
+#endif
+	return 0;
+}
+
+/* Finally, routines used to initialize the serial driver. */
+
+static void show_serial_version(void)
+{
+	printk("SGI Zilog8530 serial driver version 1.00\n");
+}
+
+/* Return layout for the requested zs chip number. */
+static inline struct sgi_zslayout *get_zs(int chip)
+{
+	extern struct hpc3_miscregs *hpc3mregs;
+
+	if(chip > 0) {
+		prom_printf("Wheee, bogus zs chip number requested.\n");
+		prom_getchar();
+		romvec->imode();
+	}
+	return (struct sgi_zslayout *) (&hpc3mregs->ser1cmd);
+
+}
+
+extern void register_console(void (*proc)(const char *));
+
+static inline void
+rs_cons_check(struct sgi_serial *ss, int channel)
+{
+	int i, o, io;
+	static consout_registered = 0;
+	static msg_printed = 0;
+
+	i = o = io = 0;
+
+	/* Is this one of the serial console lines? */
+	if((zs_cons_chanout != channel) &&
+	   (zs_cons_chanin != channel))
+		return;
+	zs_conschan = ss->zs_channel;
+	zs_consinfo = ss;
+
+	/* Register the console output putchar, if necessary */
+	if((zs_cons_chanout == channel)) {
+		o = 1;
+		/* double whee.. */
+		if(!consout_registered) {
+			register_console(zs_console_print);
+			consout_registered = 1;
+		}
+	}
+
+	/* If this is console input, we handle the break received
+	 * status interrupt on this line to mean prom_halt().
+	 */
+	if(zs_cons_chanin == channel) {
+		ss->break_abort = 1;
+		i = 1;
+	}
+	if(o && i)
+		io = 1;
+	if(ss->zs_baud != 9562) { /* Don't ask... */
+		prom_printf("BAD console baud rate %d\n", ss->zs_baud);
+		prom_getchar();
+		prom_imode();
+		panic("Console baud rate weirdness");
+	}
+
+	/* Set flag variable for this port so that it cannot be
+	 * opened for other uses by accident.
+	 */
+	ss->is_cons = 1;
+
+	if(io) {
+		if(!msg_printed) {
+			printk("zs%d: console I/O\n", ((channel>>1)&1));
+			msg_printed = 1;
+		}
+	} else {
+		printk("zs%d: console %s\n", ((channel>>1)&1),
+		       (i==1 ? "input" : (o==1 ? "output" : "WEIRD")));
+	}
+}
+
+volatile int test_done;
+
+/* rs_init inits the driver */
+int rs_init(void)
+{
+	int chip, channel, i, flags;
+	struct sgi_serial *info;
+
+	/* Setup base handler, and timer table. */
+	init_bh(SERIAL_BH, do_serial_bh);
+	timer_table[RS_TIMER].fn = rs_timer;
+	timer_table[RS_TIMER].expires = 0;
+
+	show_serial_version();
+
+	/* Initialize the tty_driver structure */
+	/* SGI: Not all of this is exactly right for us. */
+	
+	memset(&serial_driver, 0, sizeof(struct tty_driver));
+	serial_driver.magic = TTY_DRIVER_MAGIC;
+	serial_driver.name = "ttyS";
+	serial_driver.major = TTY_MAJOR;
+	serial_driver.minor_start = 64;
+	serial_driver.num = NUM_CHANNELS;
+	serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
+	serial_driver.subtype = SERIAL_TYPE_NORMAL;
+	serial_driver.init_termios = tty_std_termios;
+
+	serial_driver.init_termios.c_cflag =
+		B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+	serial_driver.flags = TTY_DRIVER_REAL_RAW;
+	serial_driver.refcount = &serial_refcount;
+	serial_driver.table = serial_table;
+	serial_driver.termios = serial_termios;
+	serial_driver.termios_locked = serial_termios_locked;
+
+	serial_driver.open = rs_open;
+	serial_driver.close = rs_close;
+	serial_driver.write = rs_write;
+	serial_driver.flush_chars = rs_flush_chars;
+	serial_driver.write_room = rs_write_room;
+	serial_driver.chars_in_buffer = rs_chars_in_buffer;
+	serial_driver.flush_buffer = rs_flush_buffer;
+	serial_driver.ioctl = rs_ioctl;
+	serial_driver.throttle = rs_throttle;
+	serial_driver.unthrottle = rs_unthrottle;
+	serial_driver.set_termios = rs_set_termios;
+	serial_driver.stop = rs_stop;
+	serial_driver.start = rs_start;
+	serial_driver.hangup = rs_hangup;
+
+	/*
+	 * The callout device is just like normal device except for
+	 * major number and the subtype code.
+	 */
+	callout_driver = serial_driver;
+	callout_driver.name = "cua";
+	callout_driver.major = TTYAUX_MAJOR;
+	callout_driver.subtype = SERIAL_TYPE_CALLOUT;
+
+	if (tty_register_driver(&serial_driver))
+		panic("Couldn't register serial driver\n");
+	if (tty_register_driver(&callout_driver))
+		panic("Couldn't register callout driver\n");
+	
+	save_flags(flags); cli();
+
+	/* Set up our interrupt linked list */
+	zs_chain = &zs_soft[0];
+	zs_soft[0].zs_next = &zs_soft[1];
+	zs_soft[1].zs_next = 0;
+
+	for(chip = 0; chip < NUM_SERIAL; chip++) {
+		/* If we are doing kgdb over one of the channels on
+		 * chip zero, kgdb_channel will be set to 1 by the
+		 * rs_kgdb_hook() routine below.
+		 */
+		if(!zs_chips[chip]) {
+			zs_chips[chip] = get_zs(chip);
+			/* Two channels per chip */
+			zs_channels[(chip*2)] = &zs_chips[chip]->channelA;
+			zs_channels[(chip*2)+1] = &zs_chips[chip]->channelB;
+			zs_soft[(chip*2)].kgdb_channel = 0;
+			zs_soft[(chip*2)+1].kgdb_channel = 0;
+		}
+		/* First, set up channel A on this chip. */
+		channel = chip * 2;
+		zs_soft[channel].zs_channel = zs_channels[channel];
+		zs_soft[channel].change_needed = 0;
+		zs_soft[channel].clk_divisor = 16;
+		zs_soft[channel].zs_baud = get_zsbaud(&zs_soft[channel]);
+		zs_soft[channel].cons_mouse = 0;
+		/* If not keyboard/mouse and is console serial
+		 * line, then enable receiver interrupts.
+		 */
+		if(zs_soft[channel].is_cons) {
+			write_zsreg(zs_soft[channel].zs_channel, R1,
+				    (EXT_INT_ENAB | INT_ALL_Rx));
+			write_zsreg(zs_soft[channel].zs_channel, R9, (NV | MIE));
+			write_zsreg(zs_soft[channel].zs_channel, R10, (NRZ));
+			write_zsreg(zs_soft[channel].zs_channel, R3, (Rx8|RxENABLE));
+			write_zsreg(zs_soft[channel].zs_channel, R5, (Tx8 | TxENAB));
+		}
+		/* If this is the kgdb line, enable interrupts because we
+		 * now want to receive the 'control-c' character from the
+		 * client attached to us asynchronously.
+		 */
+		if(zs_soft[channel].kgdb_channel)
+			kgdb_chaninit(&zs_soft[channel], 1,
+				      zs_soft[channel].zs_baud);
+
+		/* Now, channel B */
+		channel++;
+		zs_soft[channel].zs_channel = zs_channels[channel];
+		zs_soft[channel].change_needed = 0;
+		zs_soft[channel].clk_divisor = 16;
+		zs_soft[channel].zs_baud = get_zsbaud(&zs_soft[channel]);
+		zs_soft[channel].cons_keyb = 0;
+		/* If console serial line, then enable receiver interrupts. */
+		if(zs_soft[channel].is_cons) {
+			write_zsreg(zs_soft[channel].zs_channel, R1,
+				    (EXT_INT_ENAB | INT_ALL_Rx));
+			write_zsreg(zs_soft[channel].zs_channel, R9,
+				    (NV | MIE));
+			write_zsreg(zs_soft[channel].zs_channel, R10,
+				    (NRZ));
+			write_zsreg(zs_soft[channel].zs_channel, R3,
+				    (Rx8|RxENABLE));
+			write_zsreg(zs_soft[channel].zs_channel, R5,
+				    (Tx8 | TxENAB | RTS | DTR));
+		}
+	}
+
+	for(info=zs_chain, i=0; info; info = info->zs_next, i++)
+	{
+		info->magic = SERIAL_MAGIC;
+		info->port = (int) info->zs_channel;
+		info->line = i;
+		info->tty = 0;
+		info->irq = zilog_irq;
+		info->custom_divisor = 16;
+		info->close_delay = 50;
+		info->closing_wait = 3000;
+		info->x_char = 0;
+		info->event = 0;
+		info->count = 0;
+		info->blocked_open = 0;
+		info->tqueue.routine = do_softint;
+		info->tqueue.data = info;
+		info->tqueue_hangup.routine = do_serial_hangup;
+		info->tqueue_hangup.data = info;
+		info->callout_termios =callout_driver.init_termios;
+		info->normal_termios = serial_driver.init_termios;
+		info->open_wait = 0;
+		info->close_wait = 0;
+		printk("tty%02d at 0x%04x (irq = %d)", info->line, 
+		       info->port, info->irq);
+		printk(" is a Zilog8530\n");
+	}
+
+	if (request_irq(zilog_irq, rs_interrupt, (SA_INTERRUPT),
+			"Zilog8530", zs_chain))
+		panic("Unable to attach zs intr\n");
+	restore_flags(flags);
+
+	return 0;
+}
+
+/*
+ * register_serial and unregister_serial allows for serial ports to be
+ * configured at run-time, to support PCMCIA modems.
+ */
+/* SGI: Unused at this time, just here to make things link. */
+int register_serial(struct serial_struct *req)
+{
+	return -1;
+}
+
+void unregister_serial(int line)
+{
+	return;
+}
+
+/* Hooks for running a serial console.  con_init() calls this if the
+ * console is being run over one of the ttya/ttyb serial ports.
+ * 'chip' should be zero, as chip 1 drives the mouse/keyboard.
+ * 'channel' is decoded as 0=TTYA 1=TTYB, note that the channels
+ * are addressed backwards, channel B is first, then channel A.
+ */
+void
+rs_cons_hook(int chip, int out, int line)
+{
+	int channel;
+
+	if(chip)
+		panic("rs_cons_hook called with chip not zero");
+	if(line != 1 && line != 2)
+		panic("rs_cons_hook called with line not ttya or ttyb");
+	channel = line - 1;
+	if(!zs_chips[chip]) {
+		zs_chips[chip] = get_zs(chip);
+		/* Two channels per chip */
+		zs_channels[(chip*2)] = &zs_chips[chip]->channelA;
+		zs_channels[(chip*2)+1] = &zs_chips[chip]->channelB;
+	}
+	zs_soft[channel].zs_channel = zs_channels[channel];
+	zs_soft[channel].change_needed = 0;
+	zs_soft[channel].clk_divisor = 16;
+	zs_soft[channel].zs_baud = get_zsbaud(&zs_soft[channel]);
+	if(out)
+		zs_cons_chanout = ((chip * 2) + channel);
+	else
+		zs_cons_chanin = ((chip * 2) + channel);
+	rs_cons_check(&zs_soft[channel], channel);
+}
+
+/* This is called at boot time to prime the kgdb serial debugging
+ * serial line.  The 'tty_num' argument is 0 for /dev/ttyd2 and 1 for
+ * /dev/ttyd1 (yes they are backwards on purpose) which is determined
+ * in setup_arch() from the boot command line flags.
+ */
+void
+rs_kgdb_hook(int tty_num)
+{
+	int chip = 0;
+
+	if(!zs_chips[chip]) {
+		zs_chips[chip] = get_zs(chip);
+		/* Two channels per chip */
+		zs_channels[(chip*2)] = &zs_chips[chip]->channelA;
+		zs_channels[(chip*2)+1] = &zs_chips[chip]->channelB;
+	}
+	zs_soft[tty_num].zs_channel = zs_channels[tty_num];
+	zs_kgdbchan = zs_soft[tty_num].zs_channel;
+	zs_soft[tty_num].change_needed = 0;
+	zs_soft[tty_num].clk_divisor = 16;
+	zs_soft[tty_num].zs_baud = get_zsbaud(&zs_soft[tty_num]);
+	zs_soft[tty_num].kgdb_channel = 1;     /* This runs kgdb */
+	zs_soft[tty_num ^ 1].kgdb_channel = 0; /* This does not */
+
+	/* Turn on transmitter/receiver at 8-bits/char */
+	kgdb_chaninit(&zs_soft[tty_num], 0, 9600);
+	ZS_CLEARERR(zs_kgdbchan);
+	udelay(5);
+	ZS_CLEARFIFO(zs_kgdbchan);
+}
+/* sgiserial.c: Serial port driver for SGI machines.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ */
+
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/sgialib.h>
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/sgihpc.h>
+#include <asm/sgint23.h>
+#include <asm/uaccess.h>
+
+#include "sgiserial.h"
+
+#define NUM_SERIAL 1     /* One chip on board. */
+#define NUM_CHANNELS (NUM_SERIAL * 2)
+
+extern struct wait_queue * keypress_wait;
+
+struct sgi_zslayout *zs_chips[NUM_SERIAL] = { 0, };
+struct sgi_zschannel *zs_channels[NUM_CHANNELS] = { 0, 0, };
+struct sgi_zschannel *zs_conschan;
+struct sgi_zschannel *zs_kgdbchan;
+int zs_nodes[NUM_SERIAL] = { 0, };
+
+struct sgi_serial zs_soft[NUM_CHANNELS];
+struct sgi_serial *zs_chain;  /* IRQ servicing chain */
+static int zilog_irq = 21;
+
+struct tty_struct zs_ttys[NUM_CHANNELS];
+/** struct tty_struct *zs_constty; **/
+
+/* Console hooks... */
+static int zs_cons_chanout = 0;
+static int zs_cons_chanin = 0;
+struct sgi_serial *zs_consinfo = 0;
+
+static unsigned char kgdb_regs[16] = {
+	0, 0, 0,                     /* write 0, 1, 2 */
+	(Rx8 | RxENABLE),            /* write 3 */
+	(X16CLK | SB1 | PAR_EVEN),   /* write 4 */
+	(Tx8 | TxENAB),              /* write 5 */
+	0, 0, 0,                     /* write 6, 7, 8 */
+	(NV),                        /* write 9 */
+	(NRZ),                       /* write 10 */
+	(TCBR | RCBR),               /* write 11 */
+	0, 0,                        /* BRG time constant, write 12 + 13 */
+	(BRENABL),                   /* write 14 */
+	(DCDIE)                      /* write 15 */
+};
+
+#define ZS_CLOCK         3672000   /* Zilog input clock rate */
+
+DECLARE_TASK_QUEUE(tq_serial);
+
+struct tty_driver serial_driver, callout_driver;
+static int serial_refcount;
+
+/* serial subtype definitions */
+#define SERIAL_TYPE_NORMAL	1
+#define SERIAL_TYPE_CALLOUT	2
+  
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS 256
+
+/* Debugging... DEBUG_INTR is bad to use when one of the zs
+ * lines is your console ;(
+ */
+#undef SERIAL_DEBUG_INTR
+#undef SERIAL_DEBUG_OPEN
+#undef SERIAL_DEBUG_FLOW
+
+#define RS_STROBE_TIME 10
+#define RS_ISR_PASS_LIMIT 256
+
+#define _INLINE_ inline
+
+static void change_speed(struct sgi_serial *info);
+
+static struct tty_struct *serial_table[NUM_CHANNELS];
+static struct termios *serial_termios[NUM_CHANNELS];
+static struct termios *serial_termios_locked[NUM_CHANNELS];
+
+#ifndef MIN
+#define MIN(a,b)	((a) < (b) ? (a) : (b))
+#endif
+
+/*
+ * tmp_buf is used as a temporary buffer by serial_write.  We need to
+ * lock it in case the memcpy_fromfs blocks while swapping in a page,
+ * and some other program tries to do a serial write at the same time.
+ * Since the lock will only come under contention when the system is
+ * swapping and available memory is low, it makes sense to share one
+ * buffer across all the serial ports, since it significantly saves
+ * memory if large numbers of serial ports are open.
+ */
+static unsigned char tmp_buf[4096]; /* This is cheating */
+static struct semaphore tmp_buf_sem = MUTEX;
+
+static inline int serial_paranoia_check(struct sgi_serial *info,
+					dev_t device, const char *routine)
+{
+#ifdef SERIAL_PARANOIA_CHECK
+	static const char *badmagic =
+		"Warning: bad magic number for serial struct (%d, %d) in %s\n";
+	static const char *badinfo =
+		"Warning: null sun_serial for (%d, %d) in %s\n";
+
+	if (!info) {
+		printk(badinfo, MAJOR(device), MINOR(device), routine);
+		return 1;
+	}
+	if (info->magic != SERIAL_MAGIC) {
+		printk(badmagic, MAJOR(device), MINOR(device), routine);
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+/*
+ * This is used to figure out the divisor speeds and the timeouts
+ */
+static int baud_table[] = {
+	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+	9600, 19200, 38400, 57600, 115200, 0 };
+
+/* 
+ * Reading and writing Zilog8530 registers.  The delays are to make this
+ * driver work on the Sun4 which needs a settling delay after each chip
+ * register access, other machines handle this in hardware via auxiliary
+ * flip-flops which implement the settle time we do in software.
+ */
+static inline unsigned char read_zsreg(struct sgi_zschannel *channel, unsigned char reg)
+{
+	unsigned char retval;
+	volatile unsigned char junk;
+
+	udelay(2);
+	channel->control = reg;
+	junk = ioc_icontrol->istat0;
+	udelay(1);
+	retval = channel->control;
+	return retval;
+}
+
+static inline void write_zsreg(struct sgi_zschannel *channel, unsigned char reg, unsigned char value)
+{
+	volatile unsigned char junk;
+
+	udelay(2);
+	channel->control = reg;
+	junk = ioc_icontrol->istat0;
+	udelay(1);
+	channel->control = value;
+	junk = ioc_icontrol->istat0;
+	return;
+}
+
+static inline void load_zsregs(struct sgi_zschannel *channel, unsigned char *regs)
+{
+	ZS_CLEARERR(channel);
+	ZS_CLEARFIFO(channel);
+	/* Load 'em up */
+	write_zsreg(channel, R4, regs[R4]);
+	write_zsreg(channel, R10, regs[R10]);
+	write_zsreg(channel, R3, regs[R3] & ~RxENABLE);
+	write_zsreg(channel, R5, regs[R5] & ~TxENAB);
+	write_zsreg(channel, R1, regs[R1]);
+	write_zsreg(channel, R9, regs[R9]);
+	write_zsreg(channel, R11, regs[R11]);
+	write_zsreg(channel, R12, regs[R12]);
+	write_zsreg(channel, R13, regs[R13]);
+	write_zsreg(channel, R14, regs[R14]);
+	write_zsreg(channel, R15, regs[R15]);
+	write_zsreg(channel, R3, regs[R3]);
+	write_zsreg(channel, R5, regs[R5]);
+	return;
+}
+
+/* Sets or clears DTR/RTS on the requested line */
+static inline void zs_rtsdtr(struct sgi_serial *ss, int set)
+{
+	if(set) {
+		ss->curregs[5] |= (RTS | DTR);
+		ss->pendregs[5] = ss->curregs[5];
+		write_zsreg(ss->zs_channel, 5, ss->curregs[5]);
+	} else {
+		ss->curregs[5] &= ~(RTS | DTR);
+		ss->pendregs[5] = ss->curregs[5];
+		write_zsreg(ss->zs_channel, 5, ss->curregs[5]);
+	}
+	return;
+}
+
+static inline void kgdb_chaninit(struct sgi_serial *ss, int intson, int bps)
+{
+	int brg;
+
+	if(intson) {
+		kgdb_regs[R1] = INT_ALL_Rx;
+		kgdb_regs[R9] |= MIE;
+	} else {
+		kgdb_regs[R1] = 0;
+		kgdb_regs[R9] &= ~MIE;
+	}
+	brg = BPS_TO_BRG(bps, ZS_CLOCK/16);
+	kgdb_regs[R12] = (brg & 255);
+	kgdb_regs[R13] = ((brg >> 8) & 255);
+	load_zsregs(ss->zs_channel, kgdb_regs);
+}
+
+/* Utility routines for the Zilog */
+static inline int get_zsbaud(struct sgi_serial *ss)
+{
+	struct sgi_zschannel *channel = ss->zs_channel;
+	int brg;
+
+	/* The baud rate is split up between two 8-bit registers in
+	 * what is termed 'BRG time constant' format in my docs for
+	 * the chip, it is a function of the clk rate the chip is
+	 * receiving which happens to be constant.
+	 */
+	brg = ((read_zsreg(channel, 13)&0xff) << 8);
+	brg |= (read_zsreg(channel, 12)&0xff);
+	return BRG_TO_BPS(brg, (ZS_CLOCK/(ss->clk_divisor)));
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_stop() and rs_start()
+ *
+ * This routines are called before setting or resetting tty->stopped.
+ * They enable or disable transmitter interrupts, as necessary.
+ * ------------------------------------------------------------
+ */
+static void rs_stop(struct tty_struct *tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+	unsigned long flags;
+
+	if (serial_paranoia_check(info, tty->device, "rs_stop"))
+		return;
+	
+	save_flags(flags); cli();
+	if (info->curregs[5] & TxENAB) {
+		info->curregs[5] &= ~TxENAB;
+		info->pendregs[5] &= ~TxENAB;
+		write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	}
+	restore_flags(flags);
+}
+
+static void rs_start(struct tty_struct *tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+	unsigned long flags;
+	
+	if (serial_paranoia_check(info, tty->device, "rs_start"))
+		return;
+	
+	save_flags(flags); cli();
+	if (info->xmit_cnt && info->xmit_buf && !(info->curregs[5] & TxENAB)) {
+		info->curregs[5] |= TxENAB;
+		info->pendregs[5] = info->curregs[5];
+		write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	}
+	restore_flags(flags);
+}
+
+/* Drop into either the boot monitor or kadb upon receiving a break
+ * from keyboard/console input.
+ */
+static void batten_down_hatches(void)
+{
+	prom_imode();
+#if 0
+	/* If we are doing kadb, we call the debugger
+	 * else we just drop into the boot monitor.
+	 * Note that we must flush the user windows
+	 * first before giving up control.
+	 */
+	printk("\n");
+	if((((unsigned long)linux_dbvec)>=DEBUG_FIRSTVADDR) &&
+	   (((unsigned long)linux_dbvec)<=DEBUG_LASTVADDR))
+		sp_enter_debugger();
+	else
+		prom_halt();
+
+	/* XXX We want to notify the keyboard driver that all
+	 * XXX keys are in the up state or else weird things
+	 * XXX happen...
+	 */
+#endif
+	return;
+}
+
+/* On receive, this clears errors and the receiver interrupts */
+static inline void rs_recv_clear(struct sgi_zschannel *zsc)
+{
+	volatile unsigned char junk;
+
+	udelay(2);
+	zsc->control = ERR_RES;
+	junk = ioc_icontrol->istat0;
+	udelay(2);
+	zsc->control = RES_H_IUS;
+	junk = ioc_icontrol->istat0;
+}
+
+/*
+ * ----------------------------------------------------------------------
+ *
+ * Here starts the interrupt handling routines.  All of the following
+ * subroutines are declared as inline and are folded into
+ * rs_interrupt().  They were separated out for readability's sake.
+ *
+ * Note: rs_interrupt() is a "fast" interrupt, which means that it
+ * runs with interrupts turned off.  People who may want to modify
+ * rs_interrupt() should try to keep the interrupt handler as fast as
+ * possible.  After you are done making modifications, it is not a bad
+ * idea to do:
+ * 
+ * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
+ *
+ * and look at the resulting assemble code in serial.s.
+ *
+ * 				- Ted Ts'o (tytso@mit.edu), 7-Mar-93
+ * -----------------------------------------------------------------------
+ */
+
+/*
+ * This routine is used by the interrupt handler to schedule
+ * processing in the software interrupt portion of the driver.
+ */
+static _INLINE_ void rs_sched_event(struct sgi_serial *info,
+				    int event)
+{
+	info->event |= 1 << event;
+	queue_task(&info->tqueue, &tq_serial);
+	mark_bh(SERIAL_BH);
+}
+
+#ifdef CONFIG_REMOTE_DEBUG
+extern void set_async_breakpoint(unsigned int epc);
+#endif
+
+static _INLINE_ void receive_chars(struct sgi_serial *info, struct pt_regs *regs)
+{
+	struct tty_struct *tty = info->tty;
+	volatile unsigned char junk;
+	unsigned char ch, stat;
+
+	udelay(2);
+	ch = info->zs_channel->data;
+	junk = ioc_icontrol->istat0;
+	udelay(2);
+	stat = read_zsreg(info->zs_channel, R1);
+
+	/* If this is the console keyboard, we need to handle
+	 * L1-A's here.
+	 */
+	if(info->is_cons) {
+		if(ch==0) { /* whee, break received */
+			batten_down_hatches();
+			rs_recv_clear(info->zs_channel);
+			return;
+		} else if (ch == 1) {
+			show_state();
+			return;
+		} else if (ch == 2) {
+			show_buffers();
+			return;
+		}
+		/* It is a 'keyboard interrupt' ;-) */
+		wake_up(&keypress_wait);
+	}
+	/* Look for kgdb 'stop' character, consult the gdb documentation
+	 * for remote target debugging and arch/sparc/kernel/sparc-stub.c
+	 * to see how all this works.
+	 */
+#ifdef CONFIG_REMOTE_DEBUG
+	if((info->kgdb_channel) && (ch =='\003')) {
+		set_async_breakpoint(read_32bit_cp0_register(CP0_EPC));
+		goto clear_and_exit;
+	}
+#endif
+	if(!tty)
+		goto clear_and_exit;
+
+	if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+		queue_task(&tty->flip.tqueue, &tq_timer);
+	tty->flip.count++;
+	if(stat & PAR_ERR)
+		*tty->flip.flag_buf_ptr++ = TTY_PARITY;
+	else if(stat & Rx_OVR)
+		*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
+	else if(stat & CRC_ERR)
+		*tty->flip.flag_buf_ptr++ = TTY_FRAME;
+	else
+		*tty->flip.flag_buf_ptr++ = 0; /* XXX */
+	*tty->flip.char_buf_ptr++ = ch;
+
+	queue_task(&tty->flip.tqueue, &tq_timer);
+
+clear_and_exit:
+	rs_recv_clear(info->zs_channel);
+	return;
+}
+
+static _INLINE_ void transmit_chars(struct sgi_serial *info)
+{
+	volatile unsigned char junk;
+
+	/* P3: In theory we have to test readiness here because a
+	 * serial console can clog the chip through rs_put_char().
+	 * David did not do this. I think he relies on 3-chars FIFO in 8530.
+	 * Let's watch for lost _output_ characters. XXX
+	 */
+
+	/* SGI ADDENDUM: On most SGI machines, the Zilog does possess
+	 *               a 16 or 17 byte fifo, so no worries. -dm
+	 */
+
+	if (info->x_char) {
+		/* Send next char */
+		udelay(2);
+		info->zs_channel->data = info->x_char;
+		junk = ioc_icontrol->istat0;
+
+		info->x_char = 0;
+		goto clear_and_return;
+	}
+
+	if((info->xmit_cnt <= 0) || info->tty->stopped) {
+		/* That's peculiar... */
+		udelay(2);
+		info->zs_channel->control = RES_Tx_P;
+		junk = ioc_icontrol->istat0;
+		goto clear_and_return;
+	}
+
+	/* Send char */
+	udelay(2);
+	info->zs_channel->data = info->xmit_buf[info->xmit_tail++];
+	junk = ioc_icontrol->istat0;
+
+	info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+	info->xmit_cnt--;
+
+	if (info->xmit_cnt < WAKEUP_CHARS)
+		rs_sched_event(info, RS_EVENT_WRITE_WAKEUP);
+
+	if(info->xmit_cnt <= 0) {
+		udelay(2);
+		info->zs_channel->control = RES_Tx_P;
+		junk = ioc_icontrol->istat0;
+		goto clear_and_return;
+	}
+
+clear_and_return:
+	/* Clear interrupt */
+	udelay(2);
+	info->zs_channel->control = RES_H_IUS;
+	junk = ioc_icontrol->istat0;
+	return;
+}
+
+static _INLINE_ void status_handle(struct sgi_serial *info)
+{
+	volatile unsigned char junk;
+	unsigned char status;
+
+	/* Get status from Read Register 0 */
+	udelay(2);
+	status = info->zs_channel->control;
+	junk = ioc_icontrol->istat0;
+	/* Clear status condition... */
+	udelay(2);
+	info->zs_channel->control = RES_EXT_INT;
+	junk = ioc_icontrol->istat0;
+	/* Clear the interrupt */
+	udelay(2);
+	info->zs_channel->control = RES_H_IUS;
+	junk = ioc_icontrol->istat0;
+
+#if 0
+	if(status & DCD) {
+		if((info->tty->termios->c_cflag & CRTSCTS) &&
+		   ((info->curregs[3] & AUTO_ENAB)==0)) {
+			info->curregs[3] |= AUTO_ENAB;
+			info->pendregs[3] |= AUTO_ENAB;
+			write_zsreg(info->zs_channel, 3, info->curregs[3]);
+		}
+	} else {
+		if((info->curregs[3] & AUTO_ENAB)) {
+			info->curregs[3] &= ~AUTO_ENAB;
+			info->pendregs[3] &= ~AUTO_ENAB;
+			write_zsreg(info->zs_channel, 3, info->curregs[3]);
+		}
+	}
+#endif
+	/* Whee, if this is console input and this is a
+	 * 'break asserted' status change interrupt, call
+	 * the boot prom.
+	 */
+	if((status & BRK_ABRT) && info->break_abort)
+		batten_down_hatches();
+
+	/* XXX Whee, put in a buffer somewhere, the status information
+	 * XXX whee whee whee... Where does the information go...
+	 */
+	return;
+}
+
+/*
+ * This is the serial driver's generic interrupt routine
+ */
+void rs_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+	struct sgi_serial * info = (struct sgi_serial *) dev_id;
+	unsigned char zs_intreg;
+
+	zs_intreg = read_zsreg(info->zs_channel, 3);
+
+	/* NOTE: The read register 3, which holds the irq status,
+	 *       does so for both channels on each chip.  Although
+	 *       the status value itself must be read from the A
+	 *       channel and is only valid when read from channel A.
+	 *       Yes... broken hardware...
+	 */
+#define CHAN_A_IRQMASK (CHARxIP | CHATxIP | CHAEXT)
+#define CHAN_B_IRQMASK (CHBRxIP | CHBTxIP | CHBEXT)
+
+	/* *** Chip 1 *** */
+	/* Channel A -- /dev/ttya, could be the console */
+	if(zs_intreg & CHAN_A_IRQMASK) {
+		if (zs_intreg & CHARxIP)
+			receive_chars(info, regs);
+		if (zs_intreg & CHATxIP)
+			transmit_chars(info);
+		if (zs_intreg & CHAEXT)
+			status_handle(info);
+	}
+
+	info=info->zs_next;
+
+	/* Channel B -- /dev/ttyb, could be the console */
+	if(zs_intreg & CHAN_B_IRQMASK) {
+		if (zs_intreg & CHBRxIP)
+			receive_chars(info, regs);
+		if (zs_intreg & CHBTxIP)
+			transmit_chars(info);
+		if (zs_intreg & CHBEXT)
+			status_handle(info);
+	}
+}
+
+/*
+ * -------------------------------------------------------------------
+ * Here ends the serial interrupt routines.
+ * -------------------------------------------------------------------
+ */
+
+/*
+ * This routine is used to handle the "bottom half" processing for the
+ * serial driver, known also the "software interrupt" processing.
+ * This processing is done at the kernel interrupt level, after the
+ * rs_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON.  This
+ * is where time-consuming activities which can not be done in the
+ * interrupt driver proper are done; the interrupt driver schedules
+ * them using rs_sched_event(), and they get done here.
+ */
+static void do_serial_bh(void)
+{
+	run_task_queue(&tq_serial);
+}
+
+static void do_softint(void *private_)
+{
+	struct sgi_serial	*info = (struct sgi_serial *) private_;
+	struct tty_struct	*tty;
+	
+	tty = info->tty;
+	if (!tty)
+		return;
+
+	if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
+		if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+		    tty->ldisc.write_wakeup)
+			(tty->ldisc.write_wakeup)(tty);
+		wake_up_interruptible(&tty->write_wait);
+	}
+}
+
+/*
+ * This routine is called from the scheduler tqueue when the interrupt
+ * routine has signalled that a hangup has occurred.  The path of
+ * hangup processing is:
+ *
+ * 	serial interrupt routine -> (scheduler tqueue) ->
+ * 	do_serial_hangup() -> tty->hangup() -> rs_hangup()
+ * 
+ */
+static void do_serial_hangup(void *private_)
+{
+	struct sgi_serial	*info = (struct sgi_serial *) private_;
+	struct tty_struct	*tty;
+	
+	tty = info->tty;
+	if (!tty)
+		return;
+
+	tty_hangup(tty);
+}
+
+
+/*
+ * This subroutine is called when the RS_TIMER goes off.  It is used
+ * by the serial driver to handle ports that do not have an interrupt
+ * (irq=0).  This doesn't work at all for 16450's, as a sun has a Z8530.
+ */
+ 
+static void rs_timer(void)
+{
+	printk("rs_timer called\n");
+	prom_halt();
+	return;
+}
+
+static int startup(struct sgi_serial * info)
+{
+	volatile unsigned char junk;
+	unsigned long flags;
+
+	if (info->flags & ZILOG_INITIALIZED)
+		return 0;
+
+	if (!info->xmit_buf) {
+		info->xmit_buf = (unsigned char *) get_free_page(GFP_KERNEL);
+		if (!info->xmit_buf)
+			return -ENOMEM;
+	}
+
+	save_flags(flags); cli();
+
+#ifdef SERIAL_DEBUG_OPEN
+	printk("starting up ttys%d (irq %d)...", info->line, info->irq);
+#endif
+
+	/*
+	 * Clear the FIFO buffers and disable them
+	 * (they will be reenabled in change_speed())
+	 */
+	ZS_CLEARFIFO(info->zs_channel);
+	info->xmit_fifo_size = 1;
+
+	/*
+	 * Clear the interrupt registers.
+	 */
+	udelay(2);
+	info->zs_channel->control = ERR_RES;
+	junk = ioc_icontrol->istat0;
+	udelay(2);
+	info->zs_channel->control = RES_H_IUS;
+	junk = ioc_icontrol->istat0;
+
+	/*
+	 * Now, initialize the Zilog
+	 */
+	zs_rtsdtr(info, 1);
+
+	/*
+	 * Finally, enable sequencing and interrupts
+	 */
+	info->curregs[1] |= (info->curregs[1] & ~0x18) | (EXT_INT_ENAB|INT_ALL_Rx);
+	info->pendregs[1] = info->curregs[1];
+	info->curregs[3] |= (RxENABLE | Rx8);
+	info->pendregs[3] = info->curregs[3];
+	/* We enable Tx interrupts as needed. */
+	info->curregs[5] |= (TxENAB | Tx8);
+	info->pendregs[5] = info->curregs[5];
+	info->curregs[9] |= (NV | MIE);
+	info->pendregs[9] = info->curregs[9];
+	write_zsreg(info->zs_channel, 3, info->curregs[3]);
+	write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	write_zsreg(info->zs_channel, 9, info->curregs[9]);
+	
+	/*
+	 * And clear the interrupt registers again for luck.
+	 */
+	udelay(2);
+	info->zs_channel->control = ERR_RES;
+	junk = ioc_icontrol->istat0;
+	udelay(2);
+	info->zs_channel->control = RES_H_IUS;
+	junk = ioc_icontrol->istat0;
+
+	if (info->tty)
+		clear_bit(TTY_IO_ERROR, &info->tty->flags);
+	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+
+	/*
+	 * Set up serial timers...
+	 */
+#if 0  /* Works well and stops the machine. */
+	timer_table[RS_TIMER].expires = jiffies + 2;
+	timer_active |= 1 << RS_TIMER;
+#endif
+
+	/*
+	 * and set the speed of the serial port
+	 */
+	change_speed(info);
+
+	info->flags |= ZILOG_INITIALIZED;
+	restore_flags(flags);
+	return 0;
+}
+
+/*
+ * This routine will shutdown a serial port; interrupts are disabled, and
+ * DTR is dropped if the hangup on close termio flag is on.
+ */
+static void shutdown(struct sgi_serial * info)
+{
+	unsigned long	flags;
+
+	if (!(info->flags & ZILOG_INITIALIZED))
+		return;
+
+#ifdef SERIAL_DEBUG_OPEN
+	printk("Shutting down serial port %d (irq %d)....", info->line,
+	       info->irq);
+#endif
+	
+	save_flags(flags); cli(); /* Disable interrupts */
+	
+	if (info->xmit_buf) {
+		free_page((unsigned long) info->xmit_buf);
+		info->xmit_buf = 0;
+	}
+
+	if (info->tty)
+		set_bit(TTY_IO_ERROR, &info->tty->flags);
+	
+	info->flags &= ~ZILOG_INITIALIZED;
+	restore_flags(flags);
+}
+
+/*
+ * This routine is called to set the UART divisor registers to match
+ * the specified baud rate for a serial port.
+ */
+static void change_speed(struct sgi_serial *info)
+{
+	unsigned short port;
+	unsigned cflag;
+	int	i;
+	int	brg;
+
+	if (!info->tty || !info->tty->termios)
+		return;
+	cflag = info->tty->termios->c_cflag;
+	if (!(port = info->port))
+		return;
+	i = cflag & CBAUD;
+	if (i & CBAUDEX) {
+		/* XXX CBAUDEX is not obeyed.
+		 * It is impossible at a 32bits SPARC.
+		 * But we have to report this to user ... someday.
+		 */
+		i = B9600;
+	}
+	if (i == 0) {
+		/* XXX B0, hangup the line. */
+		do_serial_hangup(info);
+	} else if (baud_table[i]) {
+		info->zs_baud = baud_table[i];
+		info->clk_divisor = 16;
+
+		info->curregs[4] = X16CLK;
+		info->curregs[11] = TCBR | RCBR;
+		brg = BPS_TO_BRG(info->zs_baud, ZS_CLOCK/info->clk_divisor);
+		info->curregs[12] = (brg & 255);
+		info->curregs[13] = ((brg >> 8) & 255);
+		info->curregs[14] = BRENABL;
+	}
+
+	/* byte size and parity */
+	switch (cflag & CSIZE) {
+	case CS5:
+		info->curregs[3] &= ~(0xc0);
+		info->curregs[3] |= Rx5;
+		info->pendregs[3] = info->curregs[3];
+		info->curregs[5] &= ~(0xe0);
+		info->curregs[5] |= Tx5;
+		info->pendregs[5] = info->curregs[5];
+		break;
+	case CS6:
+		info->curregs[3] &= ~(0xc0);
+		info->curregs[3] |= Rx6;
+		info->pendregs[3] = info->curregs[3];
+		info->curregs[5] &= ~(0xe0);
+		info->curregs[5] |= Tx6;
+		info->pendregs[5] = info->curregs[5];
+		break;
+	case CS7:
+		info->curregs[3] &= ~(0xc0);
+		info->curregs[3] |= Rx7;
+		info->pendregs[3] = info->curregs[3];
+		info->curregs[5] &= ~(0xe0);
+		info->curregs[5] |= Tx7;
+		info->pendregs[5] = info->curregs[5];
+		break;
+	case CS8:
+	default: /* defaults to 8 bits */
+		info->curregs[3] &= ~(0xc0);
+		info->curregs[3] |= Rx8;
+		info->pendregs[3] = info->curregs[3];
+		info->curregs[5] &= ~(0xe0);
+		info->curregs[5] |= Tx8;
+		info->pendregs[5] = info->curregs[5];
+		break;
+	}
+	info->curregs[4] &= ~(0x0c);
+	if (cflag & CSTOPB) {
+		info->curregs[4] |= SB2;
+	} else {
+		info->curregs[4] |= SB1;
+	}
+	info->pendregs[4] = info->curregs[4];
+	if (cflag & PARENB) {
+		info->curregs[4] |= PAR_ENA;
+		info->pendregs[4] |= PAR_ENA;
+	} else {
+		info->curregs[4] &= ~PAR_ENA;
+		info->pendregs[4] &= ~PAR_ENA;
+	}
+	if (!(cflag & PARODD)) {
+		info->curregs[4] |= PAR_EVEN;
+		info->pendregs[4] |= PAR_EVEN;
+	} else {
+		info->curregs[4] &= ~PAR_EVEN;
+		info->pendregs[4] &= ~PAR_EVEN;
+	}
+
+	/* Load up the new values */
+	load_zsregs(info->zs_channel, info->curregs);
+
+	return;
+}
+
+/* This is for console output over ttya/ttyb */
+static void rs_put_char(char ch)
+{
+	struct sgi_zschannel *chan = zs_conschan;
+	volatile unsigned char junk;
+	int flags, loops = 0;
+
+	save_flags(flags); cli();
+	while(((junk = chan->control) & Tx_BUF_EMP)==0 && loops < 10000) {
+		loops++;
+		udelay(2);
+	}
+
+	udelay(2);
+	chan->data = ch;
+	junk = ioc_icontrol->istat0;
+	restore_flags(flags);
+}
+
+/* These are for receiving and sending characters under the kgdb
+ * source level kernel debugger.
+ */
+void putDebugChar(char kgdb_char)
+{
+	struct sgi_zschannel *chan = zs_kgdbchan;
+	volatile unsigned char junk;
+	unsigned long flags;
+
+	save_flags(flags); cli();
+	udelay(2);
+	while((chan->control & Tx_BUF_EMP)==0)
+		udelay(2);
+
+	udelay(2);
+	chan->data = kgdb_char;
+	junk = ioc_icontrol->istat0;
+	restore_flags(flags);
+}
+
+char getDebugChar(void)
+{
+	struct sgi_zschannel *chan = zs_kgdbchan;
+	unsigned char junk;
+
+	while((chan->control & Rx_CH_AV)==0)
+		udelay(2);
+
+	junk = ioc_icontrol->istat0;
+	udelay(2);
+	return chan->data;
+}
+
+/*
+ * Fair output driver allows a process to speak.
+ */
+static void rs_fair_output(void)
+{
+	int left;		/* Output no more than that */
+	unsigned long flags;
+	struct sgi_serial *info = zs_consinfo;
+	volatile unsigned char junk;
+	char c;
+
+	if (info == 0) return;
+	if (info->xmit_buf == 0) return;
+
+	save_flags(flags);  cli();
+	left = info->xmit_cnt;
+	while (left != 0) {
+		c = info->xmit_buf[info->xmit_tail];
+		info->xmit_tail = (info->xmit_tail+1) & (SERIAL_XMIT_SIZE-1);
+		info->xmit_cnt--;
+		restore_flags(flags);
+
+		rs_put_char(c);
+
+		save_flags(flags);  cli();
+		left = MIN(info->xmit_cnt, left-1);
+	}
+
+	/* Last character is being transmitted now (hopefully). */
+	udelay(2);
+	zs_conschan->control = RES_Tx_P;
+	junk = ioc_icontrol->istat0;
+
+	restore_flags(flags);
+	return;
+}
+
+/*
+ * zs_console_print is registered for printk.
+ */
+static void zs_console_print(const char *p)
+{
+	char c;
+
+	while((c=*(p++)) != 0) {
+		if(c == '\n')
+			rs_put_char('\r');
+		rs_put_char(c);
+	}
+
+	/* Comment this if you want to have a strict interrupt-driven output */
+	rs_fair_output();
+}
+
+static void rs_flush_chars(struct tty_struct *tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+	unsigned long flags;
+
+	if (serial_paranoia_check(info, tty->device, "rs_flush_chars"))
+		return;
+
+	if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
+	    !info->xmit_buf)
+		return;
+
+	/* Enable transmitter */
+	save_flags(flags); cli();
+	info->curregs[1] |= TxINT_ENAB|EXT_INT_ENAB;
+	info->pendregs[1] |= TxINT_ENAB|EXT_INT_ENAB;
+	write_zsreg(info->zs_channel, 1, info->curregs[1]);
+	info->curregs[5] |= TxENAB;
+	info->pendregs[5] |= TxENAB;
+	write_zsreg(info->zs_channel, 5, info->curregs[5]);
+
+	/*
+	 * Send a first (bootstrapping) character. A best solution is
+	 * to call transmit_chars() here which handles output in a
+	 * generic way. Current transmit_chars() not only transmits,
+	 * but resets interrupts also what we do not desire here.
+	 * XXX Discuss with David.
+	 */
+	if (info->zs_channel->control & Tx_BUF_EMP) {
+		volatile unsigned char junk;
+
+		/* Send char */
+		udelay(2);
+		info->zs_channel->data = info->xmit_buf[info->xmit_tail++];
+		junk = ioc_icontrol->istat0;
+		info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+		info->xmit_cnt--;
+	}
+	restore_flags(flags);
+}
+
+static int rs_write(struct tty_struct * tty, int from_user,
+		    const unsigned char *buf, int count)
+{
+	int	c, total = 0;
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+	unsigned long flags;
+
+	if (serial_paranoia_check(info, tty->device, "rs_write"))
+		return 0;
+
+	if (!tty || !info->xmit_buf)
+		return 0;
+
+	save_flags(flags);
+	while (1) {
+		cli();		
+		c = MIN(count, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+				   SERIAL_XMIT_SIZE - info->xmit_head));
+		if (c <= 0)
+			break;
+
+		if (from_user) {
+			down(&tmp_buf_sem);
+			copy_from_user(tmp_buf, buf, c);
+			c = MIN(c, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+				       SERIAL_XMIT_SIZE - info->xmit_head));
+			memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
+			up(&tmp_buf_sem);
+		} else
+			memcpy(info->xmit_buf + info->xmit_head, buf, c);
+		info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
+		info->xmit_cnt += c;
+		restore_flags(flags);
+		buf += c;
+		count -= c;
+		total += c;
+	}
+	if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
+	    !(info->curregs[5] & TxENAB)) {
+		/* Enable transmitter */
+		info->curregs[1] |= TxINT_ENAB|EXT_INT_ENAB;
+		info->pendregs[1] |= TxINT_ENAB|EXT_INT_ENAB;
+		write_zsreg(info->zs_channel, 1, info->curregs[1]);
+		info->curregs[5] |= TxENAB;
+		info->pendregs[5] |= TxENAB;
+		write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	}
+	restore_flags(flags);
+	return total;
+}
+
+static int rs_write_room(struct tty_struct *tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+	int	ret;
+				
+	if (serial_paranoia_check(info, tty->device, "rs_write_room"))
+		return 0;
+	ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
+	if (ret < 0)
+		ret = 0;
+	return ret;
+}
+
+static int rs_chars_in_buffer(struct tty_struct *tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+				
+	if (serial_paranoia_check(info, tty->device, "rs_chars_in_buffer"))
+		return 0;
+	return info->xmit_cnt;
+}
+
+static void rs_flush_buffer(struct tty_struct *tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+				
+	if (serial_paranoia_check(info, tty->device, "rs_flush_buffer"))
+		return;
+	cli();
+	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+	sti();
+	wake_up_interruptible(&tty->write_wait);
+	if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+	    tty->ldisc.write_wakeup)
+		(tty->ldisc.write_wakeup)(tty);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_throttle()
+ * 
+ * This routine is called by the upper-layer tty layer to signal that
+ * incoming characters should be throttled.
+ * ------------------------------------------------------------
+ */
+static void rs_throttle(struct tty_struct * tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+#ifdef SERIAL_DEBUG_THROTTLE
+	char	buf[64];
+	
+	printk("throttle %s: %d....\n", _tty_name(tty, buf),
+	       tty->ldisc.chars_in_buffer(tty));
+#endif
+
+	if (serial_paranoia_check(info, tty->device, "rs_throttle"))
+		return;
+	
+	if (I_IXOFF(tty))
+		info->x_char = STOP_CHAR(tty);
+
+	/* Turn off RTS line */
+	cli();
+	info->curregs[5] &= ~RTS;
+	info->pendregs[5] &= ~RTS;
+	write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	sti();
+}
+
+static void rs_unthrottle(struct tty_struct * tty)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+#ifdef SERIAL_DEBUG_THROTTLE
+	char	buf[64];
+	
+	printk("unthrottle %s: %d....\n", _tty_name(tty, buf),
+	       tty->ldisc.chars_in_buffer(tty));
+#endif
+
+	if (serial_paranoia_check(info, tty->device, "rs_unthrottle"))
+		return;
+	
+	if (I_IXOFF(tty)) {
+		if (info->x_char)
+			info->x_char = 0;
+		else
+			info->x_char = START_CHAR(tty);
+	}
+
+	/* Assert RTS line */
+	cli();
+	info->curregs[5] |= RTS;
+	info->pendregs[5] |= RTS;
+	write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	sti();
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_ioctl() and friends
+ * ------------------------------------------------------------
+ */
+
+static int get_serial_info(struct sgi_serial * info,
+			   struct serial_struct * retinfo)
+{
+	struct serial_struct tmp;
+  
+	if (!retinfo)
+		return -EFAULT;
+	memset(&tmp, 0, sizeof(tmp));
+	tmp.type = info->type;
+	tmp.line = info->line;
+	tmp.port = info->port;
+	tmp.irq = info->irq;
+	tmp.flags = info->flags;
+	tmp.baud_base = info->baud_base;
+	tmp.close_delay = info->close_delay;
+	tmp.closing_wait = info->closing_wait;
+	tmp.custom_divisor = info->custom_divisor;
+	return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
+}
+
+static int set_serial_info(struct sgi_serial * info,
+			   struct serial_struct * new_info)
+{
+	struct serial_struct new_serial;
+	struct sgi_serial old_info;
+	int 			retval = 0;
+
+	if (!new_info)
+		return -EFAULT;
+	copy_from_user(&new_serial,new_info,sizeof(new_serial));
+	old_info = *info;
+
+	if (!suser()) {
+		if ((new_serial.baud_base != info->baud_base) ||
+		    (new_serial.type != info->type) ||
+		    (new_serial.close_delay != info->close_delay) ||
+		    ((new_serial.flags & ~ZILOG_USR_MASK) !=
+		     (info->flags & ~ZILOG_USR_MASK)))
+			return -EPERM;
+		info->flags = ((info->flags & ~ZILOG_USR_MASK) |
+			       (new_serial.flags & ZILOG_USR_MASK));
+		info->custom_divisor = new_serial.custom_divisor;
+		goto check_and_exit;
+	}
+
+	if (info->count > 1)
+		return -EBUSY;
+
+	/*
+	 * OK, past this point, all the error checking has been done.
+	 * At this point, we start making changes.....
+	 */
+
+	info->baud_base = new_serial.baud_base;
+	info->flags = ((info->flags & ~ZILOG_FLAGS) |
+			(new_serial.flags & ZILOG_FLAGS));
+	info->type = new_serial.type;
+	info->close_delay = new_serial.close_delay;
+	info->closing_wait = new_serial.closing_wait;
+
+check_and_exit:
+	retval = startup(info);
+	return retval;
+}
+
+/*
+ * get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * 	    is emptied.  On bus types like RS485, the transmitter must
+ * 	    release the bus after transmitting. This must be done when
+ * 	    the transmit shift register is empty, not be done when the
+ * 	    transmit holding register is empty.  This functionality
+ * 	    allows an RS485 driver to be written in user space. 
+ */
+static int get_lsr_info(struct sgi_serial * info, unsigned int *value)
+{
+	volatile unsigned char junk;
+	unsigned char status;
+
+	cli();
+	udelay(2);
+	status = info->zs_channel->control;
+	junk = ioc_icontrol->istat0;
+	sti();
+	return put_user(status,value);
+}
+
+/*
+ * This routine sends a break character out the serial port.
+ */
+static void send_break(	struct sgi_serial * info, int duration)
+{
+	if (!info->port)
+		return;
+	current->state = TASK_INTERRUPTIBLE;
+	current->timeout = jiffies + duration;
+	cli();
+	write_zsreg(info->zs_channel, 5, (info->curregs[5] | SND_BRK));
+	schedule();
+	write_zsreg(info->zs_channel, 5, info->curregs[5]);
+	sti();
+}
+
+static int rs_ioctl(struct tty_struct *tty, struct file * file,
+		    unsigned int cmd, unsigned long arg)
+{
+	int error;
+	struct sgi_serial * info = (struct sgi_serial *)tty->driver_data;
+	int retval;
+
+	if (serial_paranoia_check(info, tty->device, "rs_ioctl"))
+		return -ENODEV;
+
+	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+	    (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD)  &&
+	    (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT)) {
+		if (tty->flags & (1 << TTY_IO_ERROR))
+		    return -EIO;
+	}
+	
+	switch (cmd) {
+		case TCSBRK:	/* SVID version: non-zero arg --> no break */
+			retval = tty_check_change(tty);
+			if (retval)
+				return retval;
+			tty_wait_until_sent(tty, 0);
+			if (!arg)
+				send_break(info, HZ/4);	/* 1/4 second */
+			return 0;
+		case TCSBRKP:	/* support for POSIX tcsendbreak() */
+			retval = tty_check_change(tty);
+			if (retval)
+				return retval;
+			tty_wait_until_sent(tty, 0);
+			send_break(info, arg ? arg*(HZ/10) : HZ/4);
+			return 0;
+		case TIOCGSOFTCAR:
+			error = verify_area(VERIFY_WRITE, (void *) arg,sizeof(long));
+			if (error)
+				return error;
+			put_user(C_CLOCAL(tty) ? 1 : 0,
+			         (unsigned long *) arg);
+			return 0;
+		case TIOCSSOFTCAR:
+			error = get_user(arg, (unsigned long *)arg);
+			if (error)
+				return error;
+			tty->termios->c_cflag =
+				((tty->termios->c_cflag & ~CLOCAL) |
+				 (arg ? CLOCAL : 0));
+			return 0;
+		case TIOCGSERIAL:
+			error = verify_area(VERIFY_WRITE, (void *) arg,
+						sizeof(struct serial_struct));
+			if (error)
+				return error;
+			return get_serial_info(info,
+					       (struct serial_struct *) arg);
+		case TIOCSSERIAL:
+			return set_serial_info(info,
+					       (struct serial_struct *) arg);
+		case TIOCSERGETLSR: /* Get line status register */
+			error = verify_area(VERIFY_WRITE, (void *) arg,
+				sizeof(unsigned int));
+			if (error)
+				return error;
+			else
+			    return get_lsr_info(info, (unsigned int *) arg);
+
+		case TIOCSERGSTRUCT:
+			error = verify_area(VERIFY_WRITE, (void *) arg,
+						sizeof(struct sgi_serial));
+			if (error)
+				return error;
+			copy_to_user((struct sun_serial *) arg,
+				    info, sizeof(struct sgi_serial));
+			return 0;
+			
+		default:
+			return -ENOIOCTLCMD;
+		}
+	return 0;
+}
+
+static void rs_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+	struct sgi_serial *info = (struct sgi_serial *)tty->driver_data;
+
+	if (tty->termios->c_cflag == old_termios->c_cflag)
+		return;
+
+	change_speed(info);
+
+	if ((old_termios->c_cflag & CRTSCTS) &&
+	    !(tty->termios->c_cflag & CRTSCTS)) {
+		tty->hw_stopped = 0;
+		rs_start(tty);
+	}
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_close()
+ * 
+ * This routine is called when the serial port gets closed.  First, we
+ * wait for the last remaining data to be sent.  Then, we unlink its
+ * ZILOG structure from the interrupt chain if necessary, and we free
+ * that IRQ if nothing is left in the chain.
+ * ------------------------------------------------------------
+ */
+static void rs_close(struct tty_struct *tty, struct file * filp)
+{
+	struct sgi_serial * info = (struct sgi_serial *)tty->driver_data;
+	unsigned long flags;
+
+	if (!info || serial_paranoia_check(info, tty->device, "rs_close"))
+		return;
+	
+	save_flags(flags); cli();
+	
+	if (tty_hung_up_p(filp)) {
+		restore_flags(flags);
+		return;
+	}
+	
+#ifdef SERIAL_DEBUG_OPEN
+	printk("rs_close ttys%d, count = %d\n", info->line, info->count);
+#endif
+	if ((tty->count == 1) && (info->count != 1)) {
+		/*
+		 * Uh, oh.  tty->count is 1, which means that the tty
+		 * structure will be freed.  Info->count should always
+		 * be one in these conditions.  If it's greater than
+		 * one, we've got real problems, since it means the
+		 * serial port won't be shutdown.
+		 */
+		printk("rs_close: bad serial port count; tty->count is 1, "
+		       "info->count is %d\n", info->count);
+		info->count = 1;
+	}
+	if (--info->count < 0) {
+		printk("rs_close: bad serial port count for ttys%d: %d\n",
+		       info->line, info->count);
+		info->count = 0;
+	}
+	if (info->count) {
+		restore_flags(flags);
+		return;
+	}
+	info->flags |= ZILOG_CLOSING;
+	/*
+	 * Save the termios structure, since this port may have
+	 * separate termios for callout and dialin.
+	 */
+	if (info->flags & ZILOG_NORMAL_ACTIVE)
+		info->normal_termios = *tty->termios;
+	if (info->flags & ZILOG_CALLOUT_ACTIVE)
+		info->callout_termios = *tty->termios;
+	/*
+	 * Now we wait for the transmit buffer to clear; and we notify 
+	 * the line discipline to only process XON/XOFF characters.
+	 */
+	tty->closing = 1;
+	if (info->closing_wait != ZILOG_CLOSING_WAIT_NONE)
+		tty_wait_until_sent(tty, info->closing_wait);
+	/*
+	 * At this point we stop accepting input.  To do this, we
+	 * disable the receive line status interrupts, and tell the
+	 * interrupt driver to stop checking the data ready bit in the
+	 * line status register.
+	 */
+	/** if (!info->iscons) ... **/
+	info->curregs[3] &= ~RxENABLE;
+	info->pendregs[3] = info->curregs[3];
+	write_zsreg(info->zs_channel, 3, info->curregs[3]);
+	info->curregs[1] &= ~(0x18);
+	info->pendregs[1] = info->curregs[1];
+	write_zsreg(info->zs_channel, 1, info->curregs[1]);
+	ZS_CLEARFIFO(info->zs_channel);
+
+	shutdown(info);
+	if (tty->driver.flush_buffer)
+		tty->driver.flush_buffer(tty);
+	if (tty->ldisc.flush_buffer)
+		tty->ldisc.flush_buffer(tty);
+	tty->closing = 0;
+	info->event = 0;
+	info->tty = 0;
+	if (tty->ldisc.num != ldiscs[N_TTY].num) {
+		if (tty->ldisc.close)
+			(tty->ldisc.close)(tty);
+		tty->ldisc = ldiscs[N_TTY];
+		tty->termios->c_line = N_TTY;
+		if (tty->ldisc.open)
+			(tty->ldisc.open)(tty);
+	}
+	if (info->blocked_open) {
+		if (info->close_delay) {
+			current->state = TASK_INTERRUPTIBLE;
+			current->timeout = jiffies + info->close_delay;
+			schedule();
+		}
+		wake_up_interruptible(&info->open_wait);
+	}
+	info->flags &= ~(ZILOG_NORMAL_ACTIVE|ZILOG_CALLOUT_ACTIVE|
+			 ZILOG_CLOSING);
+	wake_up_interruptible(&info->close_wait);
+	restore_flags(flags);
+}
+
+/*
+ * rs_hangup() --- called by tty_hangup() when a hangup is signaled.
+ */
+void rs_hangup(struct tty_struct *tty)
+{
+	struct sgi_serial * info = (struct sgi_serial *)tty->driver_data;
+	
+	if (serial_paranoia_check(info, tty->device, "rs_hangup"))
+		return;
+	
+	rs_flush_buffer(tty);
+	shutdown(info);
+	info->event = 0;
+	info->count = 0;
+	info->flags &= ~(ZILOG_NORMAL_ACTIVE|ZILOG_CALLOUT_ACTIVE);
+	info->tty = 0;
+	wake_up_interruptible(&info->open_wait);
+}
+
+/*
+ * ------------------------------------------------------------
+ * rs_open() and friends
+ * ------------------------------------------------------------
+ */
+static int block_til_ready(struct tty_struct *tty, struct file * filp,
+			   struct sgi_serial *info)
+{
+	struct wait_queue wait = { current, NULL };
+	int		retval;
+	int		do_clocal = 0;
+
+	/*
+	 * If the device is in the middle of being closed, then block
+	 * until it's done, and then try again.
+	 */
+	if (info->flags & ZILOG_CLOSING) {
+		interruptible_sleep_on(&info->close_wait);
+#ifdef SERIAL_DO_RESTART
+		if (info->flags & ZILOG_HUP_NOTIFY)
+			return -EAGAIN;
+		else
+			return -ERESTARTSYS;
+#else
+		return -EAGAIN;
+#endif
+	}
+
+	/*
+	 * If this is a callout device, then just make sure the normal
+	 * device isn't being used.
+	 */
+	if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
+		if (info->flags & ZILOG_NORMAL_ACTIVE)
+			return -EBUSY;
+		if ((info->flags & ZILOG_CALLOUT_ACTIVE) &&
+		    (info->flags & ZILOG_SESSION_LOCKOUT) &&
+		    (info->session != current->session))
+		    return -EBUSY;
+		if ((info->flags & ZILOG_CALLOUT_ACTIVE) &&
+		    (info->flags & ZILOG_PGRP_LOCKOUT) &&
+		    (info->pgrp != current->pgrp))
+		    return -EBUSY;
+		info->flags |= ZILOG_CALLOUT_ACTIVE;
+		return 0;
+	}
+	
+	/*
+	 * If non-blocking mode is set, or the port is not enabled,
+	 * then make the check up front and then exit.
+	 */
+	if ((filp->f_flags & O_NONBLOCK) ||
+	    (tty->flags & (1 << TTY_IO_ERROR))) {
+		if (info->flags & ZILOG_CALLOUT_ACTIVE)
+			return -EBUSY;
+		info->flags |= ZILOG_NORMAL_ACTIVE;
+		return 0;
+	}
+
+	if (info->flags & ZILOG_CALLOUT_ACTIVE) {
+		if (info->normal_termios.c_cflag & CLOCAL)
+			do_clocal = 1;
+	} else {
+		if (tty->termios->c_cflag & CLOCAL)
+			do_clocal = 1;
+	}
+	
+	/*
+	 * Block waiting for the carrier detect and the line to become
+	 * free (i.e., not in use by the callout).  While we are in
+	 * this loop, info->count is dropped by one, so that
+	 * rs_close() knows when to free things.  We restore it upon
+	 * exit, either normal or abnormal.
+	 */
+	retval = 0;
+	add_wait_queue(&info->open_wait, &wait);
+#ifdef SERIAL_DEBUG_OPEN
+	printk("block_til_ready before block: ttys%d, count = %d\n",
+	       info->line, info->count);
+#endif
+	info->count--;
+	info->blocked_open++;
+	while (1) {
+		cli();
+		if (!(info->flags & ZILOG_CALLOUT_ACTIVE))
+			zs_rtsdtr(info, 1);
+		sti();
+		current->state = TASK_INTERRUPTIBLE;
+		if (tty_hung_up_p(filp) ||
+		    !(info->flags & ZILOG_INITIALIZED)) {
+#ifdef SERIAL_DO_RESTART
+			if (info->flags & ZILOG_HUP_NOTIFY)
+				retval = -EAGAIN;
+			else
+				retval = -ERESTARTSYS;	
+#else
+			retval = -EAGAIN;
+#endif
+			break;
+		}
+		if (!(info->flags & ZILOG_CALLOUT_ACTIVE) &&
+		    !(info->flags & ZILOG_CLOSING) && do_clocal)
+			break;
 		if (signal_pending(current)) {
 			retval = -ERESTARTSYS;
 			break;
diff --git a/drivers/sgi/char/sgiserial.h b/drivers/sgi/char/sgiserial.h
index 35f18cab7..9a6c589d5 100644
--- a/drivers/sgi/char/sgiserial.h
+++ b/drivers/sgi/char/sgiserial.h
@@ -442,3 +442,447 @@ extern inline void ZS_CLEARFIFO(struct sgi_zschannel *channel)
 #endif
 
 #endif /* !(_SPARC_SERIAL_H) */
+/* sgiserial.h: Definitions for the SGI Zilog85C30 serial driver.
+ *
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ */
+#ifndef _SGI_SERIAL_H
+#define _SGI_SERIAL_H
+
+/* Just one channel */
+struct sgi_zschannel {
+#ifdef __MIPSEB__
+	volatile unsigned char unused0[3];
+	volatile unsigned char control;
+	volatile unsigned char unused1[3];
+	volatile unsigned char data;
+#else /* __MIPSEL__ */
+	volatile unsigned char control;
+	volatile unsigned char unused0[3];
+	volatile unsigned char data;
+	volatile unsigned char unused1[3];
+#endif
+};
+
+/* The address space layout for each zs chip.  Yes they are
+ * backwards.
+ */
+struct sgi_zslayout {
+	struct sgi_zschannel channelB;
+	struct sgi_zschannel channelA;
+};
+
+#define NUM_ZSREGS    16
+
+struct serial_struct {
+	int	type;
+	int	line;
+	int	port;
+	int	irq;
+	int	flags;
+	int	xmit_fifo_size;
+	int	custom_divisor;
+	int	baud_base;
+	unsigned short	close_delay;
+	char	reserved_char[2];
+	int	hub6;
+	unsigned short	closing_wait; /* time to wait before closing */
+	unsigned short	closing_wait2; /* no longer used... */
+	int	reserved[4];
+};
+
+/*
+ * For the close wait times, 0 means wait forever for serial port to
+ * flush its output.  65535 means don't wait at all.
+ */
+#define ZILOG_CLOSING_WAIT_INF	0
+#define ZILOG_CLOSING_WAIT_NONE	65535
+
+/*
+ * Definitions for ZILOG_struct (and serial_struct) flags field
+ */
+#define ZILOG_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes 
+				   on the callout port */
+#define ZILOG_FOURPORT  0x0002	/* Set OU1, OUT2 per AST Fourport settings */
+#define ZILOG_SAK	0x0004	/* Secure Attention Key (Orange book) */
+#define ZILOG_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
+
+#define ZILOG_SPD_MASK	0x0030
+#define ZILOG_SPD_HI	0x0010	/* Use 56000 instead of 38400 bps */
+
+#define ZILOG_SPD_VHI	0x0020  /* Use 115200 instead of 38400 bps */
+#define ZILOG_SPD_CUST	0x0030  /* Use user-specified divisor */
+
+#define ZILOG_SKIP_TEST	0x0040 /* Skip UART test during autoconfiguration */
+#define ZILOG_AUTO_IRQ  0x0080 /* Do automatic IRQ during autoconfiguration */
+#define ZILOG_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
+#define ZILOG_PGRP_LOCKOUT    0x0200 /* Lock out cua opens based on pgrp */
+#define ZILOG_CALLOUT_NOHUP   0x0400 /* Don't do hangups for cua device */
+
+#define ZILOG_FLAGS	0x0FFF	/* Possible legal ZILOG flags */
+#define ZILOG_USR_MASK 0x0430	/* Legal flags that non-privileged
+				 * users can set or reset */
+
+/* Internal flags used only by kernel/chr_drv/serial.c */
+#define ZILOG_INITIALIZED	0x80000000 /* Serial port was initialized */
+#define ZILOG_CALLOUT_ACTIVE	0x40000000 /* Call out device is active */
+#define ZILOG_NORMAL_ACTIVE	0x20000000 /* Normal device is active */
+#define ZILOG_BOOT_AUTOCONF	0x10000000 /* Autoconfigure port on bootup */
+#define ZILOG_CLOSING		0x08000000 /* Serial port is closing */
+#define ZILOG_CTS_FLOW		0x04000000 /* Do CTS flow control */
+#define ZILOG_CHECK_CD		0x02000000 /* i.e., CLOCAL */
+
+/* Software state per channel */
+
+#ifdef __KERNEL__
+/*
+ * This is our internal structure for each serial port's state.
+ * 
+ * Many fields are paralleled by the structure used by the serial_struct
+ * structure.
+ *
+ * For definitions of the flags field, see tty.h
+ */
+
+struct sgi_serial {
+	struct sgi_serial *zs_next;       /* For IRQ servicing chain */
+	struct sgi_zschannel *zs_channel; /* Channel registers */
+	unsigned char read_reg_zero;
+
+	char soft_carrier;  /* Use soft carrier on this channel */
+	char cons_keyb;     /* Channel runs the keyboard */
+	char cons_mouse;    /* Channel runs the mouse */
+	char break_abort;   /* Is serial console in, so process brk/abrt */
+	char kgdb_channel;  /* Kgdb is running on this channel */
+	char is_cons;       /* Is this our console. */
+
+	/* We need to know the current clock divisor
+	 * to read the bps rate the chip has currently
+	 * loaded.
+	 */
+	unsigned char clk_divisor;  /* May be 1, 16, 32, or 64 */
+	int zs_baud;
+
+	/* Current write register values */
+	unsigned char curregs[NUM_ZSREGS];
+
+	/* Values we need to set next opportunity */
+	unsigned char pendregs[NUM_ZSREGS];
+
+	char change_needed;
+
+	int			magic;
+	int			baud_base;
+	int			port;
+	int			irq;
+	int			flags; 		/* defined in tty.h */
+	int			type; 		/* UART type */
+	struct tty_struct 	*tty;
+	int			read_status_mask;
+	int			ignore_status_mask;
+	int			timeout;
+	int			xmit_fifo_size;
+	int			custom_divisor;
+	int			x_char;	/* xon/xoff character */
+	int			close_delay;
+	unsigned short		closing_wait;
+	unsigned short		closing_wait2;
+	unsigned long		event;
+	unsigned long		last_active;
+	int			line;
+	int			count;	    /* # of fd on device */
+	int			blocked_open; /* # of blocked opens */
+	long			session; /* Session of opening process */
+	long			pgrp; /* pgrp of opening process */
+	unsigned char 		*xmit_buf;
+	int			xmit_head;
+	int			xmit_tail;
+	int			xmit_cnt;
+	struct tq_struct	tqueue;
+	struct tq_struct	tqueue_hangup;
+	struct termios		normal_termios;
+	struct termios		callout_termios;
+	struct wait_queue	*open_wait;
+	struct wait_queue	*close_wait;
+};
+
+
+#define SERIAL_MAGIC 0x5301
+
+/*
+ * The size of the serial xmit buffer is 1 page, or 4096 bytes
+ */
+#define SERIAL_XMIT_SIZE 4096
+
+/*
+ * Events are used to schedule things to happen at timer-interrupt
+ * time, instead of at rs interrupt time.
+ */
+#define RS_EVENT_WRITE_WAKEUP	0
+
+#endif /* __KERNEL__ */
+
+/* Conversion routines to/from brg time constants from/to bits
+ * per second.
+ */
+#define BRG_TO_BPS(brg, freq) ((freq) / 2 / ((brg) + 2))
+#define BPS_TO_BRG(bps, freq) ((((freq) + (bps)) / (2 * (bps))) - 2)
+
+/* The Zilog register set */
+
+#define	FLAG	0x7e
+
+/* Write Register 0 */
+#define	R0	0		/* Register selects */
+#define	R1	1
+#define	R2	2
+#define	R3	3
+#define	R4	4
+#define	R5	5
+#define	R6	6
+#define	R7	7
+#define	R8	8
+#define	R9	9
+#define	R10	10
+#define	R11	11
+#define	R12	12
+#define	R13	13
+#define	R14	14
+#define	R15	15
+
+#define	NULLCODE	0	/* Null Code */
+#define	POINT_HIGH	0x8	/* Select upper half of registers */
+#define	RES_EXT_INT	0x10	/* Reset Ext. Status Interrupts */
+#define	SEND_ABORT	0x18	/* HDLC Abort */
+#define	RES_RxINT_FC	0x20	/* Reset RxINT on First Character */
+#define	RES_Tx_P	0x28	/* Reset TxINT Pending */
+#define	ERR_RES		0x30	/* Error Reset */
+#define	RES_H_IUS	0x38	/* Reset highest IUS */
+
+#define	RES_Rx_CRC	0x40	/* Reset Rx CRC Checker */
+#define	RES_Tx_CRC	0x80	/* Reset Tx CRC Checker */
+#define	RES_EOM_L	0xC0	/* Reset EOM latch */
+
+/* Write Register 1 */
+
+#define	EXT_INT_ENAB	0x1	/* Ext Int Enable */
+#define	TxINT_ENAB	0x2	/* Tx Int Enable */
+#define	PAR_SPEC	0x4	/* Parity is special condition */
+
+#define	RxINT_DISAB	0	/* Rx Int Disable */
+#define	RxINT_FCERR	0x8	/* Rx Int on First Character Only or Error */
+#define	INT_ALL_Rx	0x10	/* Int on all Rx Characters or error */
+#define	INT_ERR_Rx	0x18	/* Int on error only */
+
+#define	WT_RDY_RT	0x20	/* Wait/Ready on R/T */
+#define	WT_FN_RDYFN	0x40	/* Wait/FN/Ready FN */
+#define	WT_RDY_ENAB	0x80	/* Wait/Ready Enable */
+
+/* Write Register #2 (Interrupt Vector) */
+
+/* Write Register 3 */
+
+#define	RxENABLE	0x1	/* Rx Enable */
+#define	SYNC_L_INH	0x2	/* Sync Character Load Inhibit */
+#define	ADD_SM		0x4	/* Address Search Mode (SDLC) */
+#define	RxCRC_ENAB	0x8	/* Rx CRC Enable */
+#define	ENT_HM		0x10	/* Enter Hunt Mode */
+#define	AUTO_ENAB	0x20	/* Auto Enables */
+#define	Rx5		0x0	/* Rx 5 Bits/Character */
+#define	Rx7		0x40	/* Rx 7 Bits/Character */
+#define	Rx6		0x80	/* Rx 6 Bits/Character */
+#define	Rx8		0xc0	/* Rx 8 Bits/Character */
+
+/* Write Register 4 */
+
+#define	PAR_ENA		0x1	/* Parity Enable */
+#define	PAR_EVEN	0x2	/* Parity Even/Odd* */
+
+#define	SYNC_ENAB	0	/* Sync Modes Enable */
+#define	SB1		0x4	/* 1 stop bit/char */
+#define	SB15		0x8	/* 1.5 stop bits/char */
+#define	SB2		0xc	/* 2 stop bits/char */
+
+#define	MONSYNC		0	/* 8 Bit Sync character */
+#define	BISYNC		0x10	/* 16 bit sync character */
+#define	SDLC		0x20	/* SDLC Mode (01111110 Sync Flag) */
+#define	EXTSYNC		0x30	/* External Sync Mode */
+
+#define	X1CLK		0x0	/* x1 clock mode */
+#define	X16CLK		0x40	/* x16 clock mode */
+#define	X32CLK		0x80	/* x32 clock mode */
+#define	X64CLK		0xC0	/* x64 clock mode */
+
+/* Write Register 5 */
+
+#define	TxCRC_ENAB	0x1	/* Tx CRC Enable */
+#define	RTS		0x2	/* RTS */
+#define	SDLC_CRC	0x4	/* SDLC/CRC-16 */
+#define	TxENAB		0x8	/* Tx Enable */
+#define	SND_BRK		0x10	/* Send Break */
+#define	Tx5		0x0	/* Tx 5 bits (or less)/character */
+#define	Tx7		0x20	/* Tx 7 bits/character */
+#define	Tx6		0x40	/* Tx 6 bits/character */
+#define	Tx8		0x60	/* Tx 8 bits/character */
+#define	DTR		0x80	/* DTR */
+
+/* Write Register 6 (Sync bits 0-7/SDLC Address Field) */
+
+/* Write Register 7 (Sync bits 8-15/SDLC 01111110) */
+
+/* Write Register 8 (transmit buffer) */
+
+/* Write Register 9 (Master interrupt control) */
+#define	VIS	1	/* Vector Includes Status */
+#define	NV	2	/* No Vector */
+#define	DLC	4	/* Disable Lower Chain */
+#define	MIE	8	/* Master Interrupt Enable */
+#define	STATHI	0x10	/* Status high */
+#define	NORESET	0	/* No reset on write to R9 */
+#define	CHRB	0x40	/* Reset channel B */
+#define	CHRA	0x80	/* Reset channel A */
+#define	FHWRES	0xc0	/* Force hardware reset */
+
+/* Write Register 10 (misc control bits) */
+#define	BIT6	1	/* 6 bit/8bit sync */
+#define	LOOPMODE 2	/* SDLC Loop mode */
+#define	ABUNDER	4	/* Abort/flag on SDLC xmit underrun */
+#define	MARKIDLE 8	/* Mark/flag on idle */
+#define	GAOP	0x10	/* Go active on poll */
+#define	NRZ	0	/* NRZ mode */
+#define	NRZI	0x20	/* NRZI mode */
+#define	FM1	0x40	/* FM1 (transition = 1) */
+#define	FM0	0x60	/* FM0 (transition = 0) */
+#define	CRCPS	0x80	/* CRC Preset I/O */
+
+/* Write Register 11 (Clock Mode control) */
+#define	TRxCXT	0	/* TRxC = Xtal output */
+#define	TRxCTC	1	/* TRxC = Transmit clock */
+#define	TRxCBR	2	/* TRxC = BR Generator Output */
+#define	TRxCDP	3	/* TRxC = DPLL output */
+#define	TRxCOI	4	/* TRxC O/I */
+#define	TCRTxCP	0	/* Transmit clock = RTxC pin */
+#define	TCTRxCP	8	/* Transmit clock = TRxC pin */
+#define	TCBR	0x10	/* Transmit clock = BR Generator output */
+#define	TCDPLL	0x18	/* Transmit clock = DPLL output */
+#define	RCRTxCP	0	/* Receive clock = RTxC pin */
+#define	RCTRxCP	0x20	/* Receive clock = TRxC pin */
+#define	RCBR	0x40	/* Receive clock = BR Generator output */
+#define	RCDPLL	0x60	/* Receive clock = DPLL output */
+#define	RTxCX	0x80	/* RTxC Xtal/No Xtal */
+
+/* Write Register 12 (lower byte of baud rate generator time constant) */
+
+/* Write Register 13 (upper byte of baud rate generator time constant) */
+
+/* Write Register 14 (Misc control bits) */
+#define	BRENABL	1	/* Baud rate generator enable */
+#define	BRSRC	2	/* Baud rate generator source */
+#define	DTRREQ	4	/* DTR/Request function */
+#define	AUTOECHO 8	/* Auto Echo */
+#define	LOOPBAK	0x10	/* Local loopback */
+#define	SEARCH	0x20	/* Enter search mode */
+#define	RMC	0x40	/* Reset missing clock */
+#define	DISDPLL	0x60	/* Disable DPLL */
+#define	SSBR	0x80	/* Set DPLL source = BR generator */
+#define	SSRTxC	0xa0	/* Set DPLL source = RTxC */
+#define	SFMM	0xc0	/* Set FM mode */
+#define	SNRZI	0xe0	/* Set NRZI mode */
+
+/* Write Register 15 (external/status interrupt control) */
+#define	ZCIE	2	/* Zero count IE */
+#define	DCDIE	8	/* DCD IE */
+#define	SYNCIE	0x10	/* Sync/hunt IE */
+#define	CTSIE	0x20	/* CTS IE */
+#define	TxUIE	0x40	/* Tx Underrun/EOM IE */
+#define	BRKIE	0x80	/* Break/Abort IE */
+
+
+/* Read Register 0 */
+#define	Rx_CH_AV	0x1	/* Rx Character Available */
+#define	ZCOUNT		0x2	/* Zero count */
+#define	Tx_BUF_EMP	0x4	/* Tx Buffer empty */
+#define	DCD		0x8	/* DCD */
+#define	SYNC_HUNT	0x10	/* Sync/hunt */
+#define	CTS		0x20	/* CTS */
+#define	TxEOM		0x40	/* Tx underrun */
+#define	BRK_ABRT	0x80	/* Break/Abort */
+
+/* Read Register 1 */
+#define	ALL_SNT		0x1	/* All sent */
+/* Residue Data for 8 Rx bits/char programmed */
+#define	RES3		0x8	/* 0/3 */
+#define	RES4		0x4	/* 0/4 */
+#define	RES5		0xc	/* 0/5 */
+#define	RES6		0x2	/* 0/6 */
+#define	RES7		0xa	/* 0/7 */
+#define	RES8		0x6	/* 0/8 */
+#define	RES18		0xe	/* 1/8 */
+#define	RES28		0x0	/* 2/8 */
+/* Special Rx Condition Interrupts */
+#define	PAR_ERR		0x10	/* Parity error */
+#define	Rx_OVR		0x20	/* Rx Overrun Error */
+#define	CRC_ERR		0x40	/* CRC/Framing Error */
+#define	END_FR		0x80	/* End of Frame (SDLC) */
+
+/* Read Register 2 (channel b only) - Interrupt vector */
+
+/* Read Register 3 (interrupt pending register) ch a only */
+#define	CHBEXT	0x1		/* Channel B Ext/Stat IP */
+#define	CHBTxIP	0x2		/* Channel B Tx IP */
+#define	CHBRxIP	0x4		/* Channel B Rx IP */
+#define	CHAEXT	0x8		/* Channel A Ext/Stat IP */
+#define	CHATxIP	0x10		/* Channel A Tx IP */
+#define	CHARxIP	0x20		/* Channel A Rx IP */
+
+/* Read Register 8 (receive data register) */
+
+/* Read Register 10  (misc status bits) */
+#define	ONLOOP	2		/* On loop */
+#define	LOOPSEND 0x10		/* Loop sending */
+#define	CLK2MIS	0x40		/* Two clocks missing */
+#define	CLK1MIS	0x80		/* One clock missing */
+
+/* Read Register 12 (lower byte of baud rate generator constant) */
+
+/* Read Register 13 (upper byte of baud rate generator constant) */
+
+/* Read Register 15 (value of WR 15) */
+
+/* Misc inlines */
+extern inline void ZS_CLEARERR(struct sgi_zschannel *channel)
+{
+	volatile unsigned char junk;
+
+	udelay(2);
+	channel->control = ERR_RES;
+	junk = ioc_icontrol->istat0;
+}
+
+extern inline void ZS_CLEARFIFO(struct sgi_zschannel *channel)
+{
+	volatile unsigned char junk;
+
+	udelay(2);
+	junk = channel->data;
+	udelay(2); junk = ioc_icontrol->istat0;
+	junk = channel->data;
+	udelay(2); junk = ioc_icontrol->istat0;
+	junk = channel->data;
+	udelay(2); junk = ioc_icontrol->istat0;
+}
+
+#if 0
+
+#define ZS_CLEARERR(channel)    (channel->control = ERR_RES)
+#define ZS_CLEARFIFO(channel)   do { volatile unsigned char garbage; \
+				     garbage = channel->data; \
+				     udelay(2); \
+				     garbage = channel->data; \
+				     udelay(2); \
+				     garbage = channel->data; \
+				     udelay(2); } while(0)
+
+#endif
+
+#endif /* !(_SPARC_SERIAL_H) */
diff --git a/drivers/sgi/char/shmiq.c b/drivers/sgi/char/shmiq.c
index 37a8b9bf9..623f34abe 100644
--- a/drivers/sgi/char/shmiq.c
+++ b/drivers/sgi/char/shmiq.c
@@ -47,6 +47,466 @@
 #include <linux/sched.h>
 #include <linux/file.h>
 #include <linux/interrupt.h>
+#include <linux/vmalloc.h>
+#include <linux/wait.h>
+#include <linux/major.h>
+
+#include <asm/smp_lock.h>
+#include <asm/shmiq.h>
+#include <asm/mman.h>
+#include <asm/uaccess.h>
+#include <asm/poll.h>
+#include "graphics.h"
+
+/* we are not really getting any more than a few files in the shmiq */
+#define MAX_SHMIQ_DEVS 10
+
+/*
+ * One per X server running, not going to get very big.
+ * Even if we have this we now assume just 1 /dev/qcntl can be
+ * active, I need to find how this works on multi-headed machines.
+ */
+#define MAX_SHMI_QUEUES 4
+
+static struct {
+	int                 used;
+	struct file         *filp;
+	struct shmiqsetcpos cpos;
+} shmiq_pushed_devices [MAX_SHMIQ_DEVS];
+
+/* /dev/qcntlN attached memory regions, location and size of the event queue */
+static struct {
+	int    opened;		/* if this device has been opened */
+	void   *shmiq_vaddr;	/* mapping in kernel-land */
+	int    tail;		/* our copy of the shmiq->tail */
+	int    events;
+	int    mapped;
+	
+	struct wait_queue    *proc_list;
+	struct fasync_struct *fasync;
+} shmiqs [MAX_SHMI_QUEUES];
+
+void
+shmiq_push_event (struct shmqevent *e)
+{
+	struct sharedMemoryInputQueue *s;
+	int    device = 0;	/* FIXME: here is the assumption /dev/shmiq == /dev/qcntl0 */
+	int    tail_next;
+
+	if (!shmiqs [device].mapped)
+		return;
+	s = shmiqs [device].shmiq_vaddr;
+
+	s->flags = 0;
+	if (s->tail != shmiqs [device].tail){
+		s->flags |= SHMIQ_CORRUPTED;
+		return;
+	}
+	tail_next = (s->tail + 1) % (shmiqs [device].events);
+	
+	if (tail_next == s->head){
+		s->flags |= SHMIQ_OVERFLOW;
+		return;
+	}
+	
+	e->un.time = jiffies;
+	s->events [s->tail] = *e;
+	printk ("KERNEL: dev=%d which=%d type=%d flags=%d\n",
+		e->data.device, e->data.which, e->data.type, e->data.flags);
+	s->tail = tail_next;
+	shmiqs [device].tail = tail_next;
+	if (shmiqs [device].fasync)
+		kill_fasync (shmiqs [device].fasync, SIGIO);
+	wake_up_interruptible (&shmiqs [device].proc_list);
+}
+
+static int
+shmiq_manage_file (struct file *filp)
+{
+	int i;
+
+	if (!filp->f_op || !filp->f_op->ioctl)
+		return -ENOSR;
+
+	for (i = 0; i < MAX_SHMIQ_DEVS; i++){
+		if (shmiq_pushed_devices [i].used)
+			continue;
+		if ((*filp->f_op->ioctl)(filp->f_dentry->d_inode, filp, SHMIQ_ON, i) != 0)
+			return -ENOSR;
+		shmiq_pushed_devices [i].used = 1;
+		shmiq_pushed_devices [i].filp = filp;
+		shmiq_pushed_devices [i].cpos.x = 0;
+		shmiq_pushed_devices [i].cpos.y = 0;
+		return i;
+	}
+	return -ENOSR;
+}
+
+static int
+shmiq_forget_file (unsigned long fdes)
+{
+	struct file *filp;
+
+	if (fdes > MAX_SHMIQ_DEVS)
+		return -EINVAL;
+	
+	if (!shmiq_pushed_devices [fdes].used)
+		return -EINVAL;
+
+	filp = shmiq_pushed_devices [fdes].filp;
+	if (filp){
+		(*filp->f_op->ioctl)(filp->f_dentry->d_inode, filp, SHMIQ_OFF, 0);
+		shmiq_pushed_devices [fdes].filp = 0;
+		fput (filp);
+	}
+	shmiq_pushed_devices [fdes].used = 0;
+
+	return 0;
+}
+
+static int
+shmiq_sioc (int device, int cmd, struct strioctl *s)
+{
+	switch (cmd){
+	case QIOCGETINDX:
+		/*
+		 * Ok, we just return the index they are providing us
+		 */
+		printk ("QIOCGETINDX: returning %d\n", *(int *)s->ic_dp);
+		return 0;
+
+	case QIOCIISTR: {
+		struct muxioctl *mux = (struct muxioctl *) s->ic_dp;
+		
+		printk ("Double indirect ioctl: [%d, %x\n", mux->index, mux->realcmd);
+		return -EINVAL;
+	}
+
+	case QIOCSETCPOS: {
+		if (copy_from_user (&shmiq_pushed_devices [device].cpos, s->ic_dp,
+				    sizeof (struct shmiqsetcpos)))
+			return -EFAULT;
+		return 0;
+	}
+	}
+	printk ("Unknown I_STR request for shmiq device: 0x%x\n", cmd);
+	return -EINVAL;
+}
+
+static int
+shmiq_ioctl (struct inode *inode, struct file *f, unsigned int cmd, unsigned long arg)
+{
+	struct file *file;
+	struct strioctl sioc;
+	int v;
+
+	switch (cmd){
+		/*
+		 * They are giving us the file descriptor for one
+		 * of their streams devices
+		 */
+
+	case I_LINK:
+		file = fget (arg);
+		if (!file)
+			goto bad_file;
+
+		v = shmiq_manage_file (file);
+		return v;
+
+		/*
+		 * Remove a device from our list of managed
+		 * stream devices
+		 */
+	case I_UNLINK:
+		v = shmiq_forget_file (arg);
+		return v;
+		
+	case I_STR:
+		v = get_sioc (&sioc, arg);
+		if (v)
+			return v;
+		
+		/* FIXME: This forces device = 0 */
+		return shmiq_sioc (0, sioc.ic_cmd, &sioc);
+	}
+
+	return -EINVAL;
+bad_file:
+	unlock_kernel ();
+	return -EBADF;
+}
+
+extern sys_munmap(unsigned long addr, size_t len);
+
+static int
+qcntl_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg, int minor)
+{
+	struct shmiqreq req;
+	struct vm_area_struct *vma;
+	int v;
+	
+	switch (cmd){
+		/*
+		 * The address space is already mapped as a /dev/zero
+		 * mapping.  FIXME: check that /dev/zero is what the user
+		 * had mapped before :-)
+		 */
+	case QIOCATTACH: {
+		unsigned long vaddr;
+		int s;
+		
+		v = verify_area (VERIFY_READ, (void *) arg, sizeof (struct shmiqreq));
+		if (v)
+			return v;
+		if (copy_from_user (&req, (void *) arg, sizeof (req)))
+			return -EFAULT;
+		/* Do not allow to attach to another region if it has been already attached */
+		if (shmiqs [minor].mapped){
+			printk ("SHMIQ:The thingie is already mapped\n");
+			return -EINVAL;
+		}
+
+		vaddr = (unsigned long) req.user_vaddr;
+		vma = find_vma (current->mm, vaddr);
+		if (!vma){
+			printk ("SHMIQ: could not find %lx the vma\n", vaddr);
+			return -EINVAL;
+		}
+		s = req.arg * sizeof (struct shmqevent) + sizeof (struct sharedMemoryInputQueue);
+		v = sys_munmap (vaddr, s);
+		do_mmap (filp, vaddr, s, PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 0);
+		shmiqs [minor].events = req.arg;
+		shmiqs [minor].mapped = 1;
+		return 0;
+	}
+	}
+	return -EINVAL;
+}
+
+unsigned long
+shmiq_nopage (struct vm_area_struct *vma, unsigned long address, int write_access)
+{
+	/* Do not allow for mremap to expand us */
+	return 0;
+}
+
+static struct vm_operations_struct qcntl_mmap = {
+	NULL,			/* no special mmap-open */
+	NULL,			/* no special mmap-close */
+	NULL,			/* no special mmap-unmap */
+	NULL,			/* no special mmap-protect */
+	NULL,			/* no special mmap-sync */
+	NULL,			/* no special mmap-advise */
+	shmiq_nopage,		/* our magic no-page fault handler */
+	NULL,			/* no special mmap-wppage */
+	NULL,			/* no special mmap-swapout */
+	NULL			/* no special mmap-swapin */
+};
+
+static int
+shmiq_qcntl_mmap (struct file *file, struct vm_area_struct *vma)
+{
+	int           minor = MINOR (file->f_dentry->d_inode->i_rdev), error;
+	unsigned int  size;
+	unsigned long mem, start;
+	
+	/* mmap is only supported on the qcntl devices */
+	if (minor-- == 0)
+		return -EINVAL;
+
+	if (vma->vm_offset != 0)
+		return -EINVAL;
+
+	size  = vma->vm_end - vma->vm_start;
+	start = vma->vm_start; 
+	mem = (unsigned long) shmiqs [minor].shmiq_vaddr =  vmalloc_uncached (size);
+	if (!mem)
+		return -EINVAL;
+
+	/* Prevent the swapper from considering these pages for swap and touching them */
+	vma->vm_flags    |= (VM_SHM  | VM_LOCKED | VM_IO);
+	vma->vm_ops = &qcntl_mmap;
+	
+	/* Uncache the pages */
+	vma->vm_page_prot = PAGE_USERIO;
+
+	error = vmap_page_range (vma->vm_start, size, mem);
+
+	shmiqs [minor].tail = 0;
+	/* Init the shared memory input queue */
+	memset (shmiqs [minor].shmiq_vaddr, 0, size);
+	
+	return error;
+}
+		  
+static int
+shmiq_qcntl_ioctl (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	int minor = MINOR (inode->i_rdev);
+
+	lock_kernel ();
+
+	if (minor-- == 0)
+		return shmiq_ioctl (inode, filp, cmd, arg);
+
+	return qcntl_ioctl (inode, filp, cmd, arg, minor);
+}
+
+static unsigned int
+shmiq_qcntl_poll (struct file *filp, poll_table *wait)
+{
+	struct sharedMemoryInputQueue *s;
+	int minor = MINOR (filp->f_dentry->d_inode->i_rdev);
+
+	if (minor-- == 0)
+		return 0;
+
+	if (!shmiqs [minor].mapped)
+		return 0;
+	
+	poll_wait (&shmiqs [minor].proc_list, wait);
+	s = shmiqs [minor].shmiq_vaddr;
+	if (s->head != s->tail)
+		return POLLIN | POLLRDNORM;
+	return 0;
+}
+
+static int
+shmiq_qcntl_open (struct inode *inode, struct file *filp)
+{
+	int minor = MINOR (inode->i_rdev);
+
+	if (minor == 0)
+		return 0;
+
+	minor--;
+	if (minor > MAX_SHMI_QUEUES)
+		return -EINVAL;
+	if (shmiqs [minor].opened)
+		return -EBUSY;
+
+	lock_kernel ();
+	shmiqs [minor].opened      = 1;
+	shmiqs [minor].shmiq_vaddr = 0;
+	unlock_kernel ();
+	return 0;
+}
+
+static int
+shmiq_qcntl_fasync (struct file *file, int on)
+{
+	int retval;
+	int minor = MINOR (file->f_dentry->d_inode->i_rdev);
+
+	retval = fasync_helper (file, on, &shmiqs [minor].fasync);
+	if (retval < 0)
+		return retval;
+	return 0;
+}
+
+static int
+shmiq_qcntl_close (struct inode *inode, struct file *filp)
+{
+	int minor = MINOR (inode->i_rdev);
+	int j;
+	
+	if (minor-- == 0){
+		for (j = 0; j < MAX_SHMIQ_DEVS; j++)
+			shmiq_forget_file (j);
+	}
+
+	if (minor > MAX_SHMI_QUEUES)
+		return -EINVAL;
+	if (shmiqs [minor].opened == 0)
+		return -EINVAL;
+
+	lock_kernel ();
+	shmiq_qcntl_fasync (filp, 0);
+	shmiqs [minor].opened      = 0;
+	shmiqs [minor].mapped      = 0;
+	shmiqs [minor].events      = 0;
+	shmiqs [minor].fasync      = 0;
+	vfree (shmiqs [minor].shmiq_vaddr);
+	shmiqs [minor].shmiq_vaddr = 0;
+	unlock_kernel ();
+	return 0;
+}
+
+
+static struct
+file_operations shmiq_fops =
+{
+        NULL,                   /* seek */
+        NULL,                   /* read */
+        NULL,                   /* write */
+        NULL,                   /* readdir */
+        shmiq_qcntl_poll,       /* poll */
+        shmiq_qcntl_ioctl,      /* ioctl */
+        shmiq_qcntl_mmap,       /* mmap */
+        shmiq_qcntl_open,       /* open */
+        shmiq_qcntl_close,      /* close */
+        NULL,                   /* fsync */
+        shmiq_qcntl_fasync,     /* fasync */
+        NULL,                   /* check_media_change */
+        NULL,                   /* revalidate */
+};
+
+void
+shmiq_init (void)
+{
+	printk ("SHMIQ setup\n");
+	register_chrdev (SHMIQ_MAJOR, "shmiq", &shmiq_fops);
+}
+/*
+ * shmiq.c: shared memory input queue driver
+ * written 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * We implement /dev/shmiq, /dev/qcntlN here
+ * this is different from IRIX that has shmiq as a misc
+ * streams device and the and qcntl devices as a major device.
+ *
+ * minor number 0 implements /dev/shmiq,
+ * any other number implements /dev/qcntl${minor-1}
+ *
+ * /dev/shmiq is used by the X server for two things:
+ * 
+ *    1. for I_LINK()ing trough ioctl the file handle of a
+ *       STREAMS device.
+ *
+ *    2. To send STREAMS-commands to the devices with the
+ *       QIO ioctl interface.
+ *
+ * I have not yet figured how to make multiple X servers share
+ * /dev/shmiq for having different servers running.  So, for now
+ * I keep a kernel-global array of inodes that are pushed into
+ * /dev/shmiq.
+ *
+ * /dev/qcntlN is used by the X server for two things:
+ *
+ *    1. Issuing the QIOCATTACH for mapping the shared input
+ *       queue into the address space of the X server (yeah, yeah,
+ *       I did not invent this interface).
+ *
+ *    2. used by select.  I bet it is used for checking for events on
+ *       the queue.
+ *
+ * Now the problem is that there does not seem anything that
+ * establishes a connection between /dev/shmiq and the qcntlN file.  I
+ * need an strace from an X server that runs on a machine with more
+ * than one keyboard.  And this is a problem since the file handles
+ * are pushed in /dev/shmiq, while the events should be dispatched to
+ * the /dev/qcntlN device. 
+ *
+ * Until then, I just allow for 1 qcntl device.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/vmalloc.h>
 #include <linux/wait.h>
diff --git a/drivers/sgi/char/streamable.c b/drivers/sgi/char/streamable.c
index f26aad0e2..02e40cf05 100644
--- a/drivers/sgi/char/streamable.c
+++ b/drivers/sgi/char/streamable.c
@@ -361,3 +361,366 @@ streamable_init (void)
 	misc_register (&dev_input_keyboard);
 	misc_register (&dev_input_mouse);
 }
+/*
+ * streamable.c: streamable devices. /dev/gfx
+ * (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ *
+ * Major 10 is the streams clone device.  The IRIX Xsgi server just
+ * opens /dev/gfx and closes it inmediately.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/sched.h>
+#include <linux/kbd_kern.h>
+#include <linux/vt_kern.h>
+#include <asm/uaccess.h>
+#include <asm/shmiq.h>
+#include <asm/keyboard.h>
+#include "graphics.h"
+
+
+extern struct kbd_struct kbd_table [MAX_NR_CONSOLES];
+
+/* console number where forwarding is enabled */
+int forward_chars;
+
+/* To which shmiq this keyboard is assigned */
+int kbd_assigned_device;
+
+/* previous kbd_mode for the forward_chars terminal */
+int kbd_prev_mode;
+
+/* Fetchs the strioctl information from user space for I_STR ioctls */
+int
+get_sioc (struct strioctl *sioc, unsigned long arg)
+{
+	int v;
+	
+	v = verify_area (VERIFY_WRITE, (void *) arg, sizeof (struct strioctl));
+	if (v)
+		return v;
+	if (copy_from_user (sioc, (void *) arg, sizeof (struct strioctl)))
+		return -EFAULT;
+		
+	v = verify_area (VERIFY_WRITE, (void *) sioc->ic_dp, sioc->ic_len);
+	if (v)
+		return v;
+	return 0;
+}
+
+/* /dev/gfx device */
+static int
+sgi_gfx_open (struct inode *inode, struct file *file)
+{
+	printk ("GFX: Opened by %d\n", current->pid);
+	return 0;
+}
+
+static int
+sgi_gfx_close (struct inode *inode, struct file *file)
+{
+	printk ("GFX: Closed by %d\n", current->pid);
+	return 0;
+}
+
+static int
+sgi_gfx_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	printk ("GFX: ioctl 0x%x %ld called\n", cmd, arg);
+	return 0;
+	return -EINVAL;
+}
+
+struct file_operations sgi_gfx_fops = {
+	NULL,			/* llseek */
+	NULL,			/* read */
+	NULL,			/* write */
+	NULL,			/* readdir */
+	NULL,			/* poll */
+	sgi_gfx_ioctl,		/* ioctl */
+	NULL,			/* mmap */
+	sgi_gfx_open,		/* open */
+	sgi_gfx_close,		/* release */
+	NULL,			/* fsync */
+	NULL,			/* check_media_change */
+	NULL,			/* revalidate */
+	NULL			/* lock */
+};
+ 
+static struct miscdevice dev_gfx = {
+	SGI_GFX_MINOR, "sgi-gfx", &sgi_gfx_fops
+};
+
+/* /dev/input/keyboard streams device */
+static idevDesc sgi_kbd_desc = {
+        "keyboard",             /* devName */
+        "KEYBOARD",             /* devType */
+        240,                    /* nButtons */
+        0,                      /* nValuators */
+        0,                      /* nLEDs */
+        0,                      /* nStrDpys */
+        0,                      /* nIntDpys */
+        0,                      /* nBells */
+	IDEV_HAS_KEYMAP | IDEV_HAS_PCKBD
+};
+
+static int
+sgi_kbd_sioc (idevInfo *dinfo, int cmd, int size, char *data, int *found)
+{
+	*found = 1;
+	
+	switch (cmd){
+
+	case IDEVINITDEVICE:
+		return 0;
+			
+	case IDEVGETDEVICEDESC:
+		if (size >= sizeof (idevDesc)){
+			if (copy_to_user (data, &sgi_kbd_desc, sizeof (sgi_kbd_desc)))
+				return -EFAULT;
+			return 0;
+		}
+		return -EINVAL;
+
+	case IDEVGETKEYMAPDESC:
+		if (size >= sizeof (idevKeymapDesc)){
+			if (copy_to_user (data, "US", 3))
+				return -EFAULT;
+			return 0;
+		}
+		return -EINVAL;
+	}
+	*found = 0;
+	return -EINVAL;
+}
+
+static int
+sgi_keyb_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct strioctl sioc;
+	int    f, v;
+	
+	/* IRIX calls I_PUSH on the opened device, go figure */
+	if (cmd == I_PUSH)
+		return 0;
+
+	if (cmd == I_STR){
+		v = get_sioc (&sioc, arg);
+		if (v)
+			return v;
+
+		/* Why like this?  Because this is a sample piece of code
+		 * that can be copied into other drivers and shows how to
+		 * call a stock IRIX xxx_wioctl routine
+		 *
+		 * The NULL is supposed to be a idevInfo, right now we
+		 * do not support this in our kernel.  
+		 */
+		return sgi_kbd_sioc (NULL, sioc.ic_cmd, sioc.ic_len, sioc.ic_dp, &f);
+	}
+	
+	if (cmd == SHMIQ_ON){
+		kbd_assigned_device = arg;
+		forward_chars = fg_console + 1;
+		kbd_prev_mode = kbd_table [fg_console].kbdmode;
+		
+	        kbd_table [fg_console].kbdmode = VC_RAW;
+	} else if (cmd == SHMIQ_OFF && forward_chars){
+		kbd_table [forward_chars-1].kbdmode = kbd_prev_mode;
+		forward_chars = 0;
+	} else
+		return -EINVAL;
+	return 0;
+}
+
+void
+kbd_forward_char (int ch)
+{
+	static struct shmqevent ev;
+
+	ev.data.flags  = (ch & 0200) ? 0 : 1;
+	ev.data.which  = ch;
+	ev.data.device = kbd_assigned_device + 0x11;
+	shmiq_push_event (&ev);
+}
+
+static int
+sgi_keyb_open (struct inode *inode, struct file *file)
+{
+	/* Nothing, but required by the misc driver */
+	return 0;
+}
+
+struct file_operations sgi_keyb_fops = {
+	NULL,			/* llseek */
+	NULL,			/* read */
+	NULL,			/* write */
+	NULL,			/* readdir */
+	NULL,			/* poll */
+	sgi_keyb_ioctl,		/* ioctl */
+	NULL,			/* mmap */
+	sgi_keyb_open,		/* open */
+	NULL,			/* release */
+	NULL,			/* fsync */
+	NULL,			/* check_media_change */
+	NULL,			/* revalidate */
+	NULL			/* lock */
+};
+
+static struct miscdevice dev_input_keyboard = {
+	SGI_STREAMS_KEYBOARD, "streams-keyboard", &sgi_keyb_fops
+};
+
+/* /dev/input/mouse streams device */
+#define MOUSE_VALUATORS 2
+static idevDesc sgi_mouse_desc = {
+        "mouse",                /* devName */
+        "MOUSE",                /* devType */
+        3,                      /* nButtons */
+        MOUSE_VALUATORS,	/* nValuators */
+        0,                      /* nLEDs */
+        0,                      /* nStrDpys */
+        0,                      /* nIntDpys */
+        0,                      /* nBells */
+	0			/* flags */
+};
+
+static idevValuatorDesc mouse_default_valuator = {
+	200,			/* hwMinRes */
+        200,			/* hwMaxRes */
+        0,			/* hwMinVal */
+        65000,			/* hwMaxVal */
+        IDEV_EITHER,		/* possibleModes */
+        IDEV_ABSOLUTE,		/* default mode */
+        200,			/* resolution */
+        0,			/* minVal */
+        65000			/* maxVal */
+};
+
+static int mouse_opened;
+static idevValuatorDesc mouse_valuators [MOUSE_VALUATORS];
+	
+int
+sgi_mouse_open (struct inode *inode, struct file *file)
+{
+	int i;
+	
+	if (mouse_opened)
+		return -EBUSY;
+	
+	mouse_opened = 1;
+	for (i = 0; i < MOUSE_VALUATORS; i++)
+		mouse_valuators [i] = mouse_default_valuator;
+	return 0;
+}
+
+static int
+sgi_mouse_close (struct inode *inode, struct file *filp)
+{
+	mouse_opened = 0;
+	return 0;
+}
+
+static int
+sgi_mouse_sioc (idevInfo *dinfo, int cmd, int size, char *data, int *found)
+{
+	*found = 1;
+
+	switch (cmd){
+	case IDEVINITDEVICE:
+		return 0;
+			
+	case IDEVGETDEVICEDESC:
+		if (size >= sizeof (idevDesc)){
+			if (copy_to_user (data, &sgi_mouse_desc, sizeof (sgi_mouse_desc)))
+				return -EFAULT;
+			return 0;
+		}
+		return -EINVAL;
+
+	case IDEVGETVALUATORDESC: {
+		idevGetSetValDesc request, *ureq = (idevGetSetValDesc *) data;
+		
+		if (size < sizeof (idevGetSetValDesc))
+			return -EINVAL;
+
+		if (copy_from_user (&request, data, sizeof (request)))
+			return -EFAULT;
+		if (request.valNum >= MOUSE_VALUATORS)
+			return -EINVAL;
+		if (copy_to_user ((void *)&ureq->desc, 
+				  (void *)&mouse_valuators [request.valNum],
+				  sizeof (idevValuatorDesc)))
+			return -EFAULT;
+		return 0;
+	}
+	}
+	*found = 0;
+	return -EINVAL;
+}
+
+static int
+sgi_mouse_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct strioctl sioc;
+	int    f, v;
+
+	/* IRIX calls I_PUSH on the opened device, go figure */
+	switch (cmd){
+	case I_PUSH:
+		return 0;
+
+	case I_STR:
+		v = get_sioc (&sioc, arg);
+		if (v)
+			return v;
+		
+		/* Why like this?  Because this is a sample piece of code
+		 * that can be copied into other drivers and shows how to
+		 * call a stock IRIX xxx_wioctl routine
+		 *
+		 * The NULL is supposed to be a idevInfo, right now we
+		 * do not support this in our kernel.  
+		 */
+		return sgi_mouse_sioc (NULL, sioc.ic_cmd, sioc.ic_len, sioc.ic_dp, &f);
+		
+	case SHMIQ_ON:
+	case SHMIQ_OFF:
+		return 0;
+	}
+	return 0;
+}
+
+struct file_operations sgi_mouse_fops = {
+	NULL,			/* llseek */
+	NULL,			/* read */
+	NULL,			/* write */
+	NULL,			/* readdir */
+	NULL,			/* poll */
+	sgi_mouse_ioctl,	/* ioctl */
+	NULL,			/* mmap */
+	sgi_mouse_open,		/* open */
+	sgi_mouse_close,	/* release */
+	NULL,			/* fsync */
+	NULL,			/* check_media_change */
+	NULL,			/* revalidate */
+	NULL			/* lock */
+};
+
+/* /dev/input/mouse */
+static struct miscdevice dev_input_mouse = {
+	SGI_STREAMS_KEYBOARD, "streams-mouse", &sgi_mouse_fops
+};
+
+void
+streamable_init (void)
+{
+	printk ("streamable misc devices registered (keyb:%d, gfx:%d)\n",
+		SGI_STREAMS_KEYBOARD, SGI_GFX_MINOR);
+	
+	misc_register (&dev_gfx);
+	misc_register (&dev_input_keyboard);
+	misc_register (&dev_input_mouse);
+}
diff --git a/drivers/sgi/char/usema.c b/drivers/sgi/char/usema.c
index dfef772eb..262f5724f 100644
--- a/drivers/sgi/char/usema.c
+++ b/drivers/sgi/char/usema.c
@@ -27,6 +27,197 @@
 #include <linux/sched.h>
 #include <linux/file.h>
 #include <linux/major.h>
+#include <linux/string.h>
+#include <linux/dcache.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+
+#include <asm/smp_lock.h>
+#include <asm/usioctl.h>
+#include <asm/mman.h>
+#include <asm/uaccess.h>
+
+struct irix_usema {
+	struct file *filp;
+	struct wait_queue *proc_list;
+};
+
+static int
+sgi_usema_attach (usattach_t * attach, struct irix_usema *usema)
+{
+	int newfd;
+	newfd = get_unused_fd();
+	if (newfd < 0)
+		return newfd;
+	
+	current->files->fd [newfd] = usema->filp;
+	usema->filp->f_count++;
+	/* Is that it? */
+	printk("UIOCATTACHSEMA: new usema fd is %d", newfd);
+	return newfd;
+}
+
+static int
+sgi_usemaclone_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+		unsigned long arg)
+{
+	struct irix_usema *usema = file->private_data;
+	int retval;
+	
+	printk("[%s:%d] wants ioctl 0x%xd (arg 0x%lx)",
+	       current->comm, current->pid, cmd, arg);
+
+	switch(cmd) {
+	case UIOCATTACHSEMA: {
+		/* They pass us information about the semaphore to
+		   which they wish to be attached, and we create&return
+		   a new fd corresponding to the appropriate semaphore.
+		   */
+		usattach_t *attach = (usattach_t *)arg;
+		retval = verify_area(VERIFY_READ, attach, sizeof(usattach_t));
+		if (retval) {
+			printk("[%s:%d] sgi_usema_ioctl(UIOCATTACHSEMA): "
+			       "verify_area failure",
+			       current->comm, current->pid);
+			return retval;
+		}
+		if (usema == 0)
+			return -EINVAL;
+
+		printk("UIOCATTACHSEMA: attaching usema %p to process %d\n", usema, current->pid);
+		/* XXX what is attach->us_handle for? */
+		return sgi_usema_attach(attach, usema);
+		break;
+	}
+	case UIOCABLOCK:	/* XXX make `async' */
+	case UIOCNOIBLOCK:	/* XXX maybe? */
+	case UIOCBLOCK: {
+		/* Block this process on the semaphore */
+		usattach_t *attach = (usattach_t *)arg;
+
+		retval = verify_area(VERIFY_READ, attach, sizeof(usattach_t));
+		if (retval) {
+			printk("[%s:%d] sgi_usema_ioctl(UIOC*BLOCK): "
+			       "verify_area failure",
+			       current->comm, current->pid);
+			return retval;
+		}
+		printk("UIOC*BLOCK: putting process %d to sleep on usema %p",
+		       current->pid, usema);
+		if (cmd == UIOCNOIBLOCK)
+			interruptible_sleep_on(&usema->proc_list);
+		else
+			sleep_on(&usema->proc_list);
+		return 0;
+	}
+	case UIOCAUNBLOCK:	/* XXX make `async' */
+	case UIOCUNBLOCK: {
+		/* Wake up all process waiting on this semaphore */
+		usattach_t *attach = (usattach_t *)arg;
+
+		retval = verify_area(VERIFY_READ, attach, sizeof(usattach_t));
+		if (retval) {
+			printk("[%s:%d] sgi_usema_ioctl(UIOC*BLOCK): "
+			       "verify_area failure",
+			       current->comm, current->pid);
+			return retval;
+		}
+
+		printk("[%s:%d] releasing usema %p",
+		       current->comm, current->pid, usema);
+		wake_up(&usema->proc_list);
+		return 0;
+	}
+	}
+	return -ENOSYS;
+}
+
+static unsigned int
+sgi_usemaclone_poll(struct file *filp, poll_table *wait)
+{
+	struct irix_usema *usema = filp->private_data;
+	
+	printk("[%s:%d] wants to poll usema %p", current->comm, current->pid, usema);
+	
+	return 0;
+}
+
+static int
+sgi_usemaclone_open(struct inode *inode, struct file *filp)
+{
+	struct irix_usema *usema;
+
+	usema = kmalloc (sizeof (struct irix_usema), GFP_KERNEL);
+	if (!usema)
+		return -ENOMEM;
+	
+	usema->filp        = filp;
+	usema->proc_list   = NULL;
+	filp->private_data = usema;
+	return 0;
+}	
+
+static int
+sgi_usemaclone_release(struct inode *inode, struct file *filp)
+{
+	return 0;
+}
+
+struct file_operations sgi_usemaclone_fops = {
+	NULL,			/* llseek */
+	NULL,			/* read */
+	NULL,			/* write */
+	NULL,			/* readdir */
+	sgi_usemaclone_poll,	/* poll */
+	sgi_usemaclone_ioctl,	/* ioctl */
+	NULL,			/* mmap */
+	sgi_usemaclone_open,	/* open */
+	sgi_usemaclone_release,	/* release */
+	NULL,			/* fsync */
+	NULL,			/* check_media_change */
+	NULL,			/* revalidate */
+	NULL			/* lock */
+};
+
+static struct miscdevice dev_usemaclone = {
+	SGI_USEMACLONE, "usemaclone", &sgi_usemaclone_fops
+};
+
+void
+usema_init(void)
+{
+	printk("usemaclone misc device registered (minor: %d)\n", SGI_USEMACLONE);
+	misc_register(&dev_usemaclone);
+}
+/*
+ * usema.c: software semaphore driver (see IRIX's usema(7M))
+ * written 1997 Mike Shaver (shaver@neon.ingenia.ca)
+ *         1997 Miguel de Icaza (miguel@kernel.org)
+ *
+ * This file contains the implementation of /dev/usemaclone,
+ * the devices used by IRIX's us* semaphore routines.
+ *
+ * /dev/usemaclone is used to create a new semaphore device, and then
+ * the semaphore is manipulated via ioctls.
+ *
+ * At least for the zero-contention case, lock set and unset as well
+ * as semaphore P and V are done in userland, which makes things a
+ * little bit better.  I suspect that the ioctls are used to register
+ * the process as blocking, etc.
+ *
+ * Much inspiration and structure stolen from Miguel's shmiq work.
+ *
+ * For more information:
+ * usema(7m), usinit(3p), usnewsema(3p)
+ * /usr/include/sys/usioctl.h 
+ *
+*/
+
+#include <linux/fs.h>
+#include <linux/miscdevice.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/major.h>
 #include <linux/poll.h>
 #include <linux/string.h>
 #include <linux/dcache.h>
diff --git a/drivers/sgi/char/vga_font.c b/drivers/sgi/char/vga_font.c
index 2ab67797c..2c7def4f6 100644
--- a/drivers/sgi/char/vga_font.c
+++ b/drivers/sgi/char/vga_font.c
@@ -344,3 +344,349 @@ unsigned char vga_font[cmapsz] = {
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
 };
+#include "gconsole.h"
+
+unsigned char vga_font[cmapsz] = {
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd, 
+0x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff, 
+0xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x00, 0x6c, 0xfe, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x10, 
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe, 
+0x7c, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 
+0x3c, 0x3c, 0xe7, 0xe7, 0xe7, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00, 
+0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0x7e, 0x18, 0x18, 0x3c, 
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