--- /dev/null
+/*
+ * 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 (davem@davemloft.net)
+ * Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.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/page.h>
+#include <asm/pgtable.h>
+#include <asm/gio_device.h>
+
+#include <video/newport.h>
+
+#include <linux/linux_logo.h>
+#include <linux/font.h>
+
+#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_has_init;
+
+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 const struct linux_logo *newport_show_logo(void)
+{
+#ifdef CONFIG_LOGO_SGI_CLUT224
+ const struct linux_logo *logo = fb_find_logo(8);
+ const unsigned char *clut;
+ const unsigned char *data;
+ unsigned long i;
+
+ if (!logo)
+ return NULL;
+ clut = logo->clut;
+ data = logo->data;
+
+ 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;
+
+ return logo;
+#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);
+}
+
+static 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
+ */
+static 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; i < ARRAY_SIZE(linetable) - 1 && linetable[i + 1]; 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;
+}
+
+static void newport_exit(void)
+{
+ int i;
+
+ /* free memory used by user font */
+ for (i = 0; i < MAX_NR_CONSOLES; i++)
+ newport_set_def_font(i, NULL);
+}
+
+/* Can't be __init, do_take_over_console may call it later */
+static const char *newport_startup(void)
+{
+ int i;
+
+ 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();
+ newport_has_init = 1;
+
+ return "SGI Newport";
+
+out_unmap:
+ return NULL;
+}
+
+static void newport_init(struct vc_data *vc, int init)
+{
+ int cols, rows;
+
+ cols = newport_xsize / 8;
+ rows = newport_ysize / 16;
+ vc->vc_can_do_color = 1;
+ if (init) {
+ vc->vc_cols = cols;
+ vc->vc_rows = rows;
+ } else
+ vc_resize(vc, cols, rows);
+}
+
+static void newport_deinit(struct vc_data *c)
+{
+ if (!con_is_bound(&newport_con) && newport_has_init) {
+ newport_exit();
+ newport_has_init = 0;
+ }
+}
+
+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) {
+ if (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
+};
+
+static int newport_probe(struct gio_device *dev,
+ const struct gio_device_id *id)
+{
+ unsigned long newport_addr;
+ int err;
+
+ if (!dev->resource.start)
+ return -EINVAL;
+
+ if (npregs)
+ return -EBUSY; /* we only support one Newport as console */
+
+ newport_addr = dev->resource.start + 0xF0000;
+ if (!request_mem_region(newport_addr, 0x10000, "Newport"))
+ return -ENODEV;
+
+ npregs = (struct newport_regs *)/* ioremap cannot fail */
+ ioremap(newport_addr, sizeof(struct newport_regs));
+ console_lock();
+ err = do_take_over_console(&newport_con, 0, MAX_NR_CONSOLES - 1, 1);
+ console_unlock();
+ return err;
+}
+
+static void newport_remove(struct gio_device *dev)
+{
+ give_up_console(&newport_con);
+ iounmap((void *)npregs);
+}
+
+static struct gio_device_id newport_ids[] = {
+ { .id = 0x7e },
+ { .id = 0xff }
+};
+
+MODULE_ALIAS("gio:7e");
+
+static struct gio_driver newport_driver = {
+ .name = "newport",
+ .id_table = newport_ids,
+ .probe = newport_probe,
+ .remove = newport_remove,
+};
+
+int __init newport_console_init(void)
+{
+ return gio_register_driver(&newport_driver);
+}
+
+void __exit newport_console_exit(void)
+{
+ gio_unregister_driver(&newport_driver);
+}
+
+module_init(newport_console_init);
+module_exit(newport_console_exit);
+
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff