Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 745 insertions, 0 deletions

diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c
new file mode 100644
index 000000000000..e793ffd39db5
--- /dev/null
+++ b/drivers/video/console/newport_con.c
@@ -0,0 +1,745 @@
+/*
+ * newport_con.c: Abscon for newport hardware
+ * 
+ * (C) 1998 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ * (C) 1999 Ulf Carlsson (ulfc@thepuffingruop.com)
+ * 
+ * This driver is based on sgicons.c and cons_newport.
+ * 
+ * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
+ * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <linux/kd.h>
+#include <linux/selection.h>
+#include <linux/console.h>
+#include <linux/vt_kern.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <video/newport.h>
+
+#include <linux/linux_logo.h>
+#include <linux/font.h>
+
+
+extern struct font_desc font_vga_8x16;
+extern unsigned long sgi_gfxaddr;
+
+#define FONT_DATA ((unsigned char *)font_vga_8x16.data)
+
+/* borrowed from fbcon.c */
+#define REFCOUNT(fd)    (((int *)(fd))[-1])
+#define FNTSIZE(fd)     (((int *)(fd))[-2])
+#define FNTCHARCNT(fd)  (((int *)(fd))[-3])
+#define FONT_EXTRA_WORDS 3
+
+static unsigned char *font_data[MAX_NR_CONSOLES];
+
+static struct newport_regs *npregs;
+
+static int logo_active;
+static int topscan;
+static int xcurs_correction = 29;
+static int newport_xsize;
+static int newport_ysize;
+
+static int newport_set_def_font(int unit, struct console_font *op);
+
+#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 TESTVAL 0xdeadbeef
+#define XSTI_TO_FXSTART(val) (((val) & 0xffff) << 11)
+
+static inline void newport_render_background(int xstart, int ystart,
+                                             int xend, int yend, int ci)
+{
+        newport_wait(npregs);
+        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 =
+            (xstart << 16) | ((ystart + topscan) & 0x3ff);
+        npregs->go.xyendi =
+            ((xend + 7) << 16) | ((yend + topscan + 15) & 0x3ff);
+}
+
+static inline void newport_init_cmap(void)
+{
+        unsigned short i;
+
+        for (i = 0; i < 16; i++) {
+                newport_bfwait(npregs);
+                newport_cmap_setaddr(npregs, color_table[i]);
+                newport_cmap_setrgb(npregs,
+                                    default_red[i],
+                                    default_grn[i], default_blu[i]);
+        }
+}
+
+static void newport_show_logo(void)
+{
+#ifdef CONFIG_LOGO_SGI_CLUT224
+        const struct linux_logo *logo = fb_find_logo(8);
+        const unsigned char *clut = logo->clut;
+        const unsigned char *data = logo->data;
+        unsigned long i;
+
+        for (i = 0; i < logo->clutsize; i++) {
+                newport_bfwait(npregs);
+                newport_cmap_setaddr(npregs, i + 0x20);
+                newport_cmap_setrgb(npregs, clut[0], clut[1], clut[2]);
+                clut += 3;
+        }
+
+        newport_wait(npregs);
+        npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+                                 NPORT_DMODE0_CHOST);
+
+        npregs->set.xystarti = ((newport_xsize - logo->width) << 16) | (0);
+        npregs->set.xyendi = ((newport_xsize - 1) << 16);
+        newport_wait(npregs);
+
+        for (i = 0; i < logo->width*logo->height; i++)
+                npregs->go.hostrw0 = *data++ << 24;
+#endif /* CONFIG_LOGO_SGI_CLUT224 */
+}
+
+static inline void newport_clear_screen(int xstart, int ystart, int xend,
+                                        int yend, int ci)
+{
+        if (logo_active)
+                return;
+
+        newport_wait(npregs);
+        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 = (xstart << 16) | ystart;
+        npregs->go.xyendi = (xend << 16) | yend;
+}
+
+static inline void newport_clear_lines(int ystart, int yend, int ci)
+{
+        ystart = ((ystart << 4) + topscan) & 0x3ff;
+        yend = ((yend << 4) + topscan + 15) & 0x3ff;
+        newport_clear_screen(0, ystart, 1280 + 63, yend, ci);
+}
+
+void newport_reset(void)
+{
+        unsigned short treg;
+        int i;
+
+        newport_wait(npregs);
+        treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+        newport_vc2_set(npregs, VC2_IREG_CONTROL,
+                        (treg | VC2_CTRL_EVIDEO));
+
+        treg = newport_vc2_get(npregs, VC2_IREG_CENTRY);
+        newport_vc2_set(npregs, VC2_IREG_RADDR, treg);
+        npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+                               NPORT_DMODE_W2 | VC2_PROTOCOL);
+        for (i = 0; i < 128; i++) {
+                newport_bfwait(npregs);
+                if (i == 92 || i == 94)
+                        npregs->set.dcbdata0.byshort.s1 = 0xff00;
+                else
+                        npregs->set.dcbdata0.byshort.s1 = 0x0000;
+        }
+
+        newport_init_cmap();
+
+        /* turn off popup plane */
+        npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
+                               XM9_CRS_CONFIG | NPORT_DMODE_W1);
+        npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
+        npregs->set.dcbmode = (DCB_XMAP1 | R_DCB_XMAP9_PROTOCOL |
+                               XM9_CRS_CONFIG | NPORT_DMODE_W1);
+        npregs->set.dcbdata0.bybytes.b3 &= ~XM9_PUPMODE;
+
+        topscan = 0;
+        npregs->cset.topscan = 0x3ff;
+        npregs->cset.xywin = (4096 << 16) | 4096;
+
+        /* Clear the screen. */
+        newport_clear_screen(0, 0, 1280 + 63, 1024, 0);
+}
+
+/*
+ * calculate the actual screen size by reading
+ * the video timing out of the VC2
+ */
+void newport_get_screensize(void)
+{
+        int i, cols;
+        unsigned short ventry, treg;
+        unsigned short linetable[128];  /* should be enough */
+
+        ventry = newport_vc2_get(npregs, VC2_IREG_VENTRY);
+        newport_vc2_set(npregs, VC2_IREG_RADDR, ventry);
+        npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+                               NPORT_DMODE_W2 | VC2_PROTOCOL);
+        for (i = 0; i < 128; i++) {
+                newport_bfwait(npregs);
+                linetable[i] = npregs->set.dcbdata0.byshort.s1;
+        }
+
+        newport_xsize = newport_ysize = 0;
+        for (i = 0; linetable[i + 1] && (i < sizeof(linetable)); i += 2) {
+                cols = 0;
+                newport_vc2_set(npregs, VC2_IREG_RADDR, linetable[i]);
+                npregs->set.dcbmode = (NPORT_DMODE_AVC2 | VC2_REGADDR_RAM |
+                                       NPORT_DMODE_W2 | VC2_PROTOCOL);
+                do {
+                        newport_bfwait(npregs);
+                        treg = npregs->set.dcbdata0.byshort.s1;
+                        if ((treg & 1) == 0)
+                                cols += (treg >> 7) & 0xfe;
+                        if ((treg & 0x80) == 0) {
+                                newport_bfwait(npregs);
+                                treg = npregs->set.dcbdata0.byshort.s1;
+                        }
+                } while ((treg & 0x8000) == 0);
+                if (cols) {
+                        if (cols > newport_xsize)
+                                newport_xsize = cols;
+                        newport_ysize += linetable[i + 1];
+                }
+        }
+        printk("NG1: Screensize %dx%d\n", newport_xsize, newport_ysize);
+}
+
+static void newport_get_revisions(void)
+{
+        unsigned int tmp;
+        unsigned int board_rev;
+        unsigned int rex3_rev;
+        unsigned int vc2_rev;
+        unsigned int cmap_rev;
+        unsigned int xmap9_rev;
+        unsigned int bt445_rev;
+        unsigned int bitplanes;
+
+        rex3_rev = npregs->cset.status & NPORT_STAT_VERS;
+
+        npregs->set.dcbmode = (DCB_CMAP0 | NCMAP_PROTOCOL |
+                               NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
+        tmp = npregs->set.dcbdata0.bybytes.b3;
+        cmap_rev = tmp & 7;
+        board_rev = (tmp >> 4) & 7;
+        bitplanes = ((board_rev > 1) && (tmp & 0x80)) ? 8 : 24;
+
+        npregs->set.dcbmode = (DCB_CMAP1 | NCMAP_PROTOCOL |
+                               NCMAP_REGADDR_RREG | NPORT_DMODE_W1);
+        tmp = npregs->set.dcbdata0.bybytes.b3;
+        if ((tmp & 7) < cmap_rev)
+                cmap_rev = (tmp & 7);
+
+        vc2_rev = (newport_vc2_get(npregs, VC2_IREG_CONFIG) >> 5) & 7;
+
+        npregs->set.dcbmode = (DCB_XMAP0 | R_DCB_XMAP9_PROTOCOL |
+                               XM9_CRS_REVISION | NPORT_DMODE_W1);
+        xmap9_rev = npregs->set.dcbdata0.bybytes.b3 & 7;
+
+        npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
+                               BT445_CSR_ADDR_REG | NPORT_DMODE_W1);
+        npregs->set.dcbdata0.bybytes.b3 = BT445_REVISION_REG;
+        npregs->set.dcbmode = (DCB_BT445 | BT445_PROTOCOL |
+                               BT445_CSR_REVISION | NPORT_DMODE_W1);
+        bt445_rev = (npregs->set.dcbdata0.bybytes.b3 >> 4) - 0x0a;
+
+#define L(a)     (char)('A'+(a))
+        printk
+            ("NG1: Revision %d, %d bitplanes, REX3 revision %c, VC2 revision %c, xmap9 revision %c, cmap revision %c, bt445 revision %c\n",
+             board_rev, bitplanes, L(rex3_rev), L(vc2_rev), L(xmap9_rev),
+             L(cmap_rev ? (cmap_rev + 1) : 0), L(bt445_rev));
+#undef L
+
+        if (board_rev == 3)     /* I don't know all affected revisions */
+                xcurs_correction = 21;
+}
+
+/* Can't be __init, take_over_console may call it later */
+static const char *newport_startup(void)
+{
+        int i;
+
+        if (!sgi_gfxaddr)
+                return NULL;
+        npregs = (struct newport_regs *)        /* ioremap cannot fail */
+                 ioremap(sgi_gfxaddr, sizeof(struct newport_regs));
+        npregs->cset.config = NPORT_CFG_GD0;
+
+        if (newport_wait(npregs))
+                goto out_unmap;
+
+        npregs->set.xstarti = TESTVAL;
+        if (npregs->set._xstart.word != XSTI_TO_FXSTART(TESTVAL))
+                goto out_unmap;
+
+        for (i = 0; i < MAX_NR_CONSOLES; i++)
+                font_data[i] = FONT_DATA;
+
+        newport_reset();
+        newport_get_revisions();
+        newport_get_screensize();
+
+        return "SGI Newport";
+
+out_unmap:
+        iounmap((void *)npregs);
+        return NULL;
+}
+
+static void newport_init(struct vc_data *vc, int init)
+{
+        vc->vc_cols = newport_xsize / 8;
+        vc->vc_rows = newport_ysize / 16;
+        vc->vc_can_do_color = 1;
+}
+
+static void newport_deinit(struct vc_data *c)
+{
+        int i;
+
+        /* free memory used by user font */
+        for (i = 0; i < MAX_NR_CONSOLES; i++)
+                newport_set_def_font(i, NULL);
+}
+
+static void newport_clear(struct vc_data *vc, int sy, int sx, int height,
+                          int width)
+{
+        int xend = ((sx + width) << 3) - 1;
+        int ystart = ((sy << 4) + topscan) & 0x3ff;
+        int yend = (((sy + height) << 4) + topscan - 1) & 0x3ff;
+
+        if (logo_active)
+                return;
+
+        if (ystart < yend) {
+                newport_clear_screen(sx << 3, ystart, xend, yend,
+                                     (vc->vc_color & 0xf0) >> 4);
+        } else {
+                newport_clear_screen(sx << 3, ystart, xend, 1023,
+                                     (vc->vc_color & 0xf0) >> 4);
+                newport_clear_screen(sx << 3, 0, xend, yend,
+                                     (vc->vc_color & 0xf0) >> 4);
+        }
+}
+
+static void newport_putc(struct vc_data *vc, int charattr, int ypos,
+                         int xpos)
+{
+        unsigned char *p;
+
+        p = &font_data[vc->vc_num][(charattr & 0xff) << 4];
+        charattr = (charattr >> 8) & 0xff;
+        xpos <<= 3;
+        ypos <<= 4;
+
+        newport_render_background(xpos, ypos, xpos, ypos,
+                                  (charattr & 0xf0) >> 4);
+
+        /* Set the color and drawing mode. */
+        newport_wait(npregs);
+        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 + topscan) & 0x3ff);
+        npregs->set.xyendi = ((xpos + 7) << 16);
+        newport_wait(npregs);
+
+        /* Go, baby, go... */
+        RENDER(npregs, p);
+}
+
+static void newport_putcs(struct vc_data *vc, const unsigned short *s,
+                          int count, int ypos, int xpos)
+{
+        int i;
+        int charattr;
+        unsigned char *p;
+
+        charattr = (scr_readw(s) >> 8) & 0xff;
+
+        xpos <<= 3;
+        ypos <<= 4;
+
+        if (!logo_active)
+                /* Clear the area behing the string */
+                newport_render_background(xpos, ypos,
+                                          xpos + ((count - 1) << 3), ypos,
+                                          (charattr & 0xf0) >> 4);
+
+        newport_wait(npregs);
+
+        /* Set the color and drawing mode. */
+        npregs->set.colori = charattr & 0xf;
+        npregs->set.drawmode0 = (NPORT_DMODE0_DRAW | NPORT_DMODE0_BLOCK |
+                                 NPORT_DMODE0_STOPX | NPORT_DMODE0_ZPENAB |
+                                 NPORT_DMODE0_L32);
+
+        for (i = 0; i < count; i++, xpos += 8) {
+                p = &font_data[vc->vc_num][(scr_readw(s++) & 0xff) << 4];
+
+                newport_wait(npregs);
+
+                /* Set coordinates for bitmap operation. */
+                npregs->set.xystarti =
+                    (xpos << 16) | ((ypos + topscan) & 0x3ff);
+                npregs->set.xyendi = ((xpos + 7) << 16);
+
+                /* Go, baby, go... */
+                RENDER(npregs, p);
+        }
+}
+
+static void newport_cursor(struct vc_data *vc, int mode)
+{
+        unsigned short treg;
+        int xcurs, ycurs;
+
+        switch (mode) {
+        case CM_ERASE:
+                treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+                newport_vc2_set(npregs, VC2_IREG_CONTROL,
+                                (treg & ~(VC2_CTRL_ECDISP)));
+                break;
+
+        case CM_MOVE:
+        case CM_DRAW:
+                treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+                newport_vc2_set(npregs, VC2_IREG_CONTROL,
+                                (treg | VC2_CTRL_ECDISP));
+                xcurs = (vc->vc_pos - vc->vc_visible_origin) / 2;
+                ycurs = ((xcurs / vc->vc_cols) << 4) + 31;
+                xcurs = ((xcurs % vc->vc_cols) << 3) + xcurs_correction;
+                newport_vc2_set(npregs, VC2_IREG_CURSX, xcurs);
+                newport_vc2_set(npregs, VC2_IREG_CURSY, ycurs);
+        }
+}
+
+static int newport_switch(struct vc_data *vc)
+{
+        static int logo_drawn = 0;
+
+        topscan = 0;
+        npregs->cset.topscan = 0x3ff;
+
+        if (!logo_drawn) {
+                newport_show_logo();
+                logo_drawn = 1;
+                logo_active = 1;
+        }
+
+        return 1;
+}
+
+static int newport_blank(struct vc_data *c, int blank, int mode_switch)
+{
+        unsigned short treg;
+
+        if (blank == 0) {
+                /* unblank console */
+                treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+                newport_vc2_set(npregs, VC2_IREG_CONTROL,
+                                (treg | VC2_CTRL_EDISP));
+        } else {
+                /* blank console */
+                treg = newport_vc2_get(npregs, VC2_IREG_CONTROL);
+                newport_vc2_set(npregs, VC2_IREG_CONTROL,
+                                (treg & ~(VC2_CTRL_EDISP)));
+        }
+        return 1;
+}
+
+static int newport_set_font(int unit, struct console_font *op)
+{
+        int w = op->width;
+        int h = op->height;
+        int size = h * op->charcount;
+        int i;
+        unsigned char *new_data, *data = op->data, *p;
+
+        /* ladis: when I grow up, there will be a day... and more sizes will
+         * be supported ;-) */
+        if ((w != 8) || (h != 16)
+            || (op->charcount != 256 && op->charcount != 512))
+                return -EINVAL;
+
+        if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size,
+             GFP_USER))) return -ENOMEM;
+
+        new_data += FONT_EXTRA_WORDS * sizeof(int);
+        FNTSIZE(new_data) = size;
+        FNTCHARCNT(new_data) = op->charcount;
+        REFCOUNT(new_data) = 0; /* usage counter */
+
+        p = new_data;
+        for (i = 0; i < op->charcount; i++) {
+                memcpy(p, data, h);
+                data += 32;
+                p += h;
+        }
+
+        /* check if font is already used by other console */
+        for (i = 0; i < MAX_NR_CONSOLES; i++) {
+                if (font_data[i] != FONT_DATA
+                    && FNTSIZE(font_data[i]) == size
+                    && !memcmp(font_data[i], new_data, size)) {
+                        kfree(new_data - FONT_EXTRA_WORDS * sizeof(int));
+                        /* current font is the same as the new one */
+                        if (i == unit)
+                                return 0;
+                        new_data = font_data[i];
+                        break;
+                }
+        }
+        /* old font is user font */
+        if (font_data[unit] != FONT_DATA) {
+                if (--REFCOUNT(font_data[unit]) == 0)
+                        kfree(font_data[unit] -
+                              FONT_EXTRA_WORDS * sizeof(int));
+        }
+        REFCOUNT(new_data)++;
+        font_data[unit] = new_data;
+
+        return 0;
+}
+
+static int newport_set_def_font(int unit, struct console_font *op)
+{
+        if (font_data[unit] != FONT_DATA) {
+                if (--REFCOUNT(font_data[unit]) == 0)
+                        kfree(font_data[unit] -
+                              FONT_EXTRA_WORDS * sizeof(int));
+                font_data[unit] = FONT_DATA;
+        }
+
+        return 0;
+}
+
+static int newport_font_default(struct vc_data *vc, struct console_font *op, char *name)
+{
+        return newport_set_def_font(vc->vc_num, op);
+}
+
+static int newport_font_set(struct vc_data *vc, struct console_font *font, unsigned flags)
+{
+        return newport_set_font(vc->vc_num, font);
+}
+
+static int newport_set_palette(struct vc_data *vc, unsigned char *table)
+{
+        return -EINVAL;
+}
+
+static int newport_scrolldelta(struct vc_data *vc, int lines)
+{
+        /* there is (nearly) no off-screen memory, so we can't scroll back */
+        return 0;
+}
+
+static int newport_scroll(struct vc_data *vc, int t, int b, int dir,
+                          int lines)
+{
+        int count, x, y;
+        unsigned short *s, *d;
+        unsigned short chattr;
+
+        logo_active = 0;        /* it's time to disable the logo now.. */
+
+        if (t == 0 && b == vc->vc_rows) {
+                if (dir == SM_UP) {
+                        topscan = (topscan + (lines << 4)) & 0x3ff;
+                        newport_clear_lines(vc->vc_rows - lines,
+                                            vc->vc_rows - 1,
+                                            (vc->vc_color & 0xf0) >> 4);
+                } else {
+                        topscan = (topscan + (-lines << 4)) & 0x3ff;
+                        newport_clear_lines(0, lines - 1,
+                                            (vc->vc_color & 0xf0) >> 4);
+                }
+                npregs->cset.topscan = (topscan - 1) & 0x3ff;
+                return 0;
+        }
+
+        count = (b - t - lines) * vc->vc_cols;
+        if (dir == SM_UP) {
+                x = 0;
+                y = t;
+                s = (unsigned short *) (vc->vc_origin +
+                                        vc->vc_size_row * (t + lines));
+                d = (unsigned short *) (vc->vc_origin +
+                                        vc->vc_size_row * t);
+                while (count--) {
+                        chattr = scr_readw(s++);
+                        if (chattr != scr_readw(d)) {
+                                newport_putc(vc, chattr, y, x);
+                                scr_writew(chattr, d);
+                        }
+                        d++;
+                        if (++x == vc->vc_cols) {
+                                x = 0;
+                                y++;
+                        }
+                }
+                d = (unsigned short *) (vc->vc_origin +
+                                        vc->vc_size_row * (b - lines));
+                x = 0;
+                y = b - lines;
+                for (count = 0; count < (lines * vc->vc_cols); count++) {
+                        if (scr_readw(d) != vc->vc_video_erase_char) {
+                                newport_putc(vc, vc->vc_video_erase_char,
+                                             y, x);
+                                scr_writew(vc->vc_video_erase_char, d);
+                        }
+                        d++;
+                        if (++x == vc->vc_cols) {
+                                x = 0;
+                                y++;
+                        }
+                }
+        } else {
+                x = vc->vc_cols - 1;
+                y = b - 1;
+                s = (unsigned short *) (vc->vc_origin +
+                                        vc->vc_size_row * (b - lines) - 2);
+                d = (unsigned short *) (vc->vc_origin +
+                                        vc->vc_size_row * b - 2);
+                while (count--) {
+                        chattr = scr_readw(s--);
+                        if (chattr != scr_readw(d)) {
+                                newport_putc(vc, chattr, y, x);
+                                scr_writew(chattr, d);
+                        }
+                        d--;
+                        if (x-- == 0) {
+                                x = vc->vc_cols - 1;
+                                y--;
+                        }
+                }
+                d = (unsigned short *) (vc->vc_origin +
+                                        vc->vc_size_row * t);
+                x = 0;
+                y = t;
+                for (count = 0; count < (lines * vc->vc_cols); count++) {
+                        if (scr_readw(d) != vc->vc_video_erase_char) {
+                                newport_putc(vc, vc->vc_video_erase_char,
+                                             y, x);
+                                scr_writew(vc->vc_video_erase_char, d);
+                        }
+                        d++;
+                        if (++x == vc->vc_cols) {
+                                x = 0;
+                                y++;
+                        }
+                }
+        }
+        return 1;
+}
+
+static void newport_bmove(struct vc_data *vc, int sy, int sx, int dy,
+                          int dx, int h, int w)
+{
+        short xs, ys, xe, ye, xoffs, yoffs, tmp;
+
+        xs = sx << 3;
+        xe = ((sx + w) << 3) - 1;
+        /*
+         * as bmove is only used to move stuff around in the same line
+         * (h == 1), we don't care about wrap arounds caused by topscan != 0
+         */
+        ys = ((sy << 4) + topscan) & 0x3ff;
+        ye = (((sy + h) << 4) - 1 + topscan) & 0x3ff;
+        xoffs = (dx - sx) << 3;
+        yoffs = (dy - sy) << 4;
+        if (xoffs > 0) {
+                /* move to the right, exchange starting points */
+                tmp = xe;
+                xe = xs;
+                xs = tmp;
+        }
+        newport_wait(npregs);
+        npregs->set.drawmode0 = (NPORT_DMODE0_S2S | NPORT_DMODE0_BLOCK |
+                                 NPORT_DMODE0_DOSETUP | NPORT_DMODE0_STOPX
+                                 | NPORT_DMODE0_STOPY);
+        npregs->set.xystarti = (xs << 16) | ys;
+        npregs->set.xyendi = (xe << 16) | ye;
+        npregs->go.xymove = (xoffs << 16) | yoffs;
+}
+
+static int newport_dummy(struct vc_data *c)
+{
+        return 0;
+}
+
+#define DUMMY (void *) newport_dummy
+
+const struct consw newport_con = {
+        .owner            = THIS_MODULE,
+        .con_startup      = newport_startup,
+        .con_init         = newport_init,
+        .con_deinit       = newport_deinit,
+        .con_clear        = newport_clear,
+        .con_putc         = newport_putc,
+        .con_putcs        = newport_putcs,
+        .con_cursor       = newport_cursor,
+        .con_scroll       = newport_scroll,
+        .con_bmove        = newport_bmove,
+        .con_switch       = newport_switch,
+        .con_blank        = newport_blank,
+        .con_font_set     = newport_font_set,
+        .con_font_default = newport_font_default,
+        .con_set_palette  = newport_set_palette,
+        .con_scrolldelta  = newport_scrolldelta,
+        .con_set_origin   = DUMMY,
+        .con_save_screen  = DUMMY
+};
+
+#ifdef MODULE
+static int __init newport_console_init(void)
+{
+        return take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1);
+}
+
+static void __exit newport_console_exit(void)
+{
+        give_up_console(&newport_con);
+        iounmap((void *)npregs);
+}
+
+module_init(newport_console_init);
+module_exit(newport_console_exit);
+#endif
+
+MODULE_LICENSE("GPL");