Creation of Cybook 2416 (actually Gen4) repository

drivers/video/console/promcon.c

@@ -0,0 +1,597 @@
+/* $Id: promcon.c,v 1.1.1.1 2007/06/12 07:27:09 eyryu Exp $
+ * Console driver utilizing PROM sun terminal emulation
+ *
+ * Copyright (C) 1998  Eddie C. Dost  (ecd@skynet.be)
+ * Copyright (C) 1998  Jakub Jelinek  (jj@ultra.linux.cz)
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/console.h>
+#include <linux/vt_kern.h>
+#include <linux/selection.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/kd.h>
+
+#include <asm/oplib.h>
+#include <asm/uaccess.h>
+
+static short pw = 80 - 1, ph = 34 - 1;
+static short px, py;
+static unsigned long promcon_uni_pagedir[2];
+
+extern u8 promfont_unicount[];
+extern u16 promfont_unitable[];
+
+#define PROMCON_COLOR 0
+
+#if PROMCON_COLOR
+#define inverted(s)	((((s) & 0x7700) == 0x0700) ? 0 : 1)
+#else
+#define inverted(s)	(((s) & 0x0800) ? 1 : 0)
+#endif
+
+static __inline__ void
+promcon_puts(char *buf, int cnt)
+{
+	prom_printf("%*.*s", cnt, cnt, buf);
+}
+
+static int
+promcon_start(struct vc_data *conp, char *b)
+{
+	unsigned short *s = (unsigned short *)
+			(conp->vc_origin + py * conp->vc_size_row + (px << 1));
+	u16 cs;
+
+	cs = scr_readw(s);
+	if (px == pw) {
+		unsigned short *t = s - 1;
+		u16 ct = scr_readw(t);
+
+		if (inverted(cs) && inverted(ct))
+			return sprintf(b, "\b\033[7m%c\b\033[@%c\033[m", cs,
+				       ct);
+		else if (inverted(cs))
+			return sprintf(b, "\b\033[7m%c\033[m\b\033[@%c", cs,
+				       ct);
+		else if (inverted(ct))
+			return sprintf(b, "\b%c\b\033[@\033[7m%c\033[m", cs,
+				       ct);
+		else
+			return sprintf(b, "\b%c\b\033[@%c", cs, ct);
+	}
+
+	if (inverted(cs))
+		return sprintf(b, "\033[7m%c\033[m\b", cs);
+	else
+		return sprintf(b, "%c\b", cs);
+}
+
+static int
+promcon_end(struct vc_data *conp, char *b)
+{
+	unsigned short *s = (unsigned short *)
+			(conp->vc_origin + py * conp->vc_size_row + (px << 1));
+	char *p = b;
+	u16 cs;
+
+	b += sprintf(b, "\033[%d;%dH", py + 1, px + 1);
+
+	cs = scr_readw(s);
+	if (px == pw) {
+		unsigned short *t = s - 1;
+		u16 ct = scr_readw(t);
+
+		if (inverted(cs) && inverted(ct))
+			b += sprintf(b, "\b%c\b\033[@\033[7m%c\033[m", cs, ct);
+		else if (inverted(cs))
+			b += sprintf(b, "\b%c\b\033[@%c", cs, ct);
+		else if (inverted(ct))
+			b += sprintf(b, "\b\033[7m%c\b\033[@%c\033[m", cs, ct);
+		else
+			b += sprintf(b, "\b\033[7m%c\033[m\b\033[@%c", cs, ct);
+		return b - p;
+	}
+
+	if (inverted(cs))
+		b += sprintf(b, "%c\b", cs);
+	else
+		b += sprintf(b, "\033[7m%c\033[m\b", cs);
+	return b - p;
+}
+
+const char *promcon_startup(void)
+{
+	const char *display_desc = "PROM";
+	int node;
+	char buf[40];
+	
+	node = prom_getchild(prom_root_node);
+	node = prom_searchsiblings(node, "options");
+	if (prom_getproperty(node,  "screen-#columns", buf, 40) != -1) {
+		pw = simple_strtoul(buf, NULL, 0);
+		if (pw < 10 || pw > 256)
+			pw = 80;
+		pw--;
+	}
+	if (prom_getproperty(node,  "screen-#rows", buf, 40) != -1) {
+		ph = simple_strtoul(buf, NULL, 0);
+		if (ph < 10 || ph > 256)
+			ph = 34;
+		ph--;
+	}
+	promcon_puts("\033[H\033[J", 6);
+	return display_desc;
+}
+
+static void
+promcon_init_unimap(struct vc_data *conp)
+{
+	mm_segment_t old_fs = get_fs();
+	struct unipair *p, *p1;
+	u16 *q;
+	int i, j, k;
+	
+	p = kmalloc(256*sizeof(struct unipair), GFP_KERNEL);
+	if (!p) return;
+	
+	q = promfont_unitable;
+	p1 = p;
+	k = 0;
+	for (i = 0; i < 256; i++)
+		for (j = promfont_unicount[i]; j; j--) {
+			p1->unicode = *q++;
+			p1->fontpos = i;
+			p1++;
+			k++;
+		}
+	set_fs(KERNEL_DS);
+	con_clear_unimap(conp, NULL);
+	con_set_unimap(conp, k, p);
+	con_protect_unimap(conp, 1);
+	set_fs(old_fs);
+	kfree(p);
+}
+
+static void
+promcon_init(struct vc_data *conp, int init)
+{
+	unsigned long p;
+	
+	conp->vc_can_do_color = PROMCON_COLOR;
+	if (init) {
+		conp->vc_cols = pw + 1;
+		conp->vc_rows = ph + 1;
+	}
+	p = *conp->vc_uni_pagedir_loc;
+	if (conp->vc_uni_pagedir_loc == &conp->vc_uni_pagedir ||
+	    !--conp->vc_uni_pagedir_loc[1])
+		con_free_unimap(conp);
+	conp->vc_uni_pagedir_loc = promcon_uni_pagedir;
+	promcon_uni_pagedir[1]++;
+	if (!promcon_uni_pagedir[0] && p) {
+		promcon_init_unimap(conp);
+	}
+	if (!init) {
+		if (conp->vc_cols != pw + 1 || conp->vc_rows != ph + 1)
+			vc_resize(conp, pw + 1, ph + 1);
+	}
+}
+
+static void
+promcon_deinit(struct vc_data *conp)
+{
+	/* When closing the last console, reset video origin */
+	if (!--promcon_uni_pagedir[1])
+		con_free_unimap(conp);
+	conp->vc_uni_pagedir_loc = &conp->vc_uni_pagedir;
+	con_set_default_unimap(conp);
+}
+
+static int
+promcon_switch(struct vc_data *conp)
+{
+	return 1;
+}
+
+static unsigned short *
+promcon_repaint_line(unsigned short *s, unsigned char *buf, unsigned char **bp)
+{
+	int cnt = pw + 1;
+	int attr = -1;
+	unsigned char *b = *bp;
+
+	while (cnt--) {
+		u16 c = scr_readw(s);
+		if (attr != inverted(c)) {
+			attr = inverted(c);
+			if (attr) {
+				strcpy (b, "\033[7m");
+				b += 4;
+			} else {
+				strcpy (b, "\033[m");
+				b += 3;
+			}
+		}
+		*b++ = c;
+		s++;
+		if (b - buf >= 224) {
+			promcon_puts(buf, b - buf);
+			b = buf;
+		}
+	}
+	*bp = b;
+	return s;
+}
+
+static void
+promcon_putcs(struct vc_data *conp, const unsigned short *s,
+	      int count, int y, int x)
+{
+	unsigned char buf[256], *b = buf;
+	unsigned short attr = scr_readw(s);
+	unsigned char save;
+	int i, last = 0;
+
+	if (console_blanked)
+		return;
+	
+	if (count <= 0)
+		return;
+
+	b += promcon_start(conp, b);
+
+	if (x + count >= pw + 1) {
+		if (count == 1) {
+			x -= 1;
+			save = scr_readw((unsigned short *)(conp->vc_origin
+						   + y * conp->vc_size_row
+						   + (x << 1)));
+
+			if (px != x || py != y) {
+				b += sprintf(b, "\033[%d;%dH", y + 1, x + 1);
+				px = x;
+				py = y;
+			}
+
+			if (inverted(attr))
+				b += sprintf(b, "\033[7m%c\033[m", scr_readw(s++));
+			else
+				b += sprintf(b, "%c", scr_readw(s++));
+
+			strcpy(b, "\b\033[@");
+			b += 4;
+
+			if (inverted(save))
+				b += sprintf(b, "\033[7m%c\033[m", save);
+			else
+				b += sprintf(b, "%c", save);
+
+			px++;
+
+			b += promcon_end(conp, b);
+			promcon_puts(buf, b - buf);
+			return;
+		} else {
+			last = 1;
+			count = pw - x - 1;
+		}
+	}
+
+	if (inverted(attr)) {
+		strcpy(b, "\033[7m");
+		b += 4;
+	}
+
+	if (px != x || py != y) {
+		b += sprintf(b, "\033[%d;%dH", y + 1, x + 1);
+		px = x;
+		py = y;
+	}
+
+	for (i = 0; i < count; i++) {
+		if (b - buf >= 224) {
+			promcon_puts(buf, b - buf);
+			b = buf;
+		}
+		*b++ = scr_readw(s++);
+	}
+
+	px += count;
+
+	if (last) {
+		save = scr_readw(s++);
+		b += sprintf(b, "%c\b\033[@%c", scr_readw(s++), save);
+		px++;
+	}
+
+	if (inverted(attr)) {
+		strcpy(b, "\033[m");
+		b += 3;
+	}
+
+	b += promcon_end(conp, b);
+	promcon_puts(buf, b - buf);
+}
+
+static void
+promcon_putc(struct vc_data *conp, int c, int y, int x)
+{
+	unsigned short s;
+
+	if (console_blanked)
+		return;
+	
+	scr_writew(c, &s);
+	promcon_putcs(conp, &s, 1, y, x);
+}
+
+static void
+promcon_clear(struct vc_data *conp, int sy, int sx, int height, int width)
+{
+	unsigned char buf[256], *b = buf;
+	int i, j;
+
+	if (console_blanked)
+		return;
+	
+	b += promcon_start(conp, b);
+
+	if (!sx && width == pw + 1) {
+
+		if (!sy && height == ph + 1) {
+			strcpy(b, "\033[H\033[J");
+			b += 6;
+			b += promcon_end(conp, b);
+			promcon_puts(buf, b - buf);
+			return;
+		} else if (sy + height == ph + 1) {
+			b += sprintf(b, "\033[%dH\033[J", sy + 1);
+			b += promcon_end(conp, b);
+			promcon_puts(buf, b - buf);
+			return;
+		}
+
+		b += sprintf(b, "\033[%dH", sy + 1);
+		for (i = 1; i < height; i++) {
+			strcpy(b, "\033[K\n");
+			b += 4;
+		}
+
+		strcpy(b, "\033[K");
+		b += 3;
+
+		b += promcon_end(conp, b);
+		promcon_puts(buf, b - buf);
+		return;
+
+	} else if (sx + width == pw + 1) {
+
+		b += sprintf(b, "\033[%d;%dH", sy + 1, sx + 1);
+		for (i = 1; i < height; i++) {
+			strcpy(b, "\033[K\n");
+			b += 4;
+		}
+
+		strcpy(b, "\033[K");
+		b += 3;
+
+		b += promcon_end(conp, b);
+		promcon_puts(buf, b - buf);
+		return;
+	}
+
+	for (i = sy + 1; i <= sy + height; i++) {
+		b += sprintf(b, "\033[%d;%dH", i, sx + 1);
+		for (j = 0; j < width; j++)
+			*b++ = ' ';
+		if (b - buf + width >= 224) {
+			promcon_puts(buf, b - buf);
+			b = buf;
+		}
+	}
+
+	b += promcon_end(conp, b);
+	promcon_puts(buf, b - buf);
+}
+                        
+static void
+promcon_bmove(struct vc_data *conp, int sy, int sx, int dy, int dx,
+	      int height, int width)
+{
+	char buf[256], *b = buf;
+
+	if (console_blanked)
+		return;
+	
+	b += promcon_start(conp, b);
+	if (sy == dy && height == 1) {
+		if (dx > sx && dx + width == conp->vc_cols)
+			b += sprintf(b, "\033[%d;%dH\033[%d@\033[%d;%dH",
+				     sy + 1, sx + 1, dx - sx, py + 1, px + 1);
+		else if (dx < sx && sx + width == conp->vc_cols)
+			b += sprintf(b, "\033[%d;%dH\033[%dP\033[%d;%dH",
+				     dy + 1, dx + 1, sx - dx, py + 1, px + 1);
+
+		b += promcon_end(conp, b);
+		promcon_puts(buf, b - buf);
+		return;
+	}
+
+	/*
+	 * FIXME: What to do here???
+	 * Current console.c should not call it like that ever.
+	 */
+	prom_printf("\033[7mFIXME: bmove not handled\033[m\n");
+}
+
+static void
+promcon_cursor(struct vc_data *conp, int mode)
+{
+	char buf[32], *b = buf;
+
+	switch (mode) {
+	case CM_ERASE:
+		break;
+
+	case CM_MOVE:
+	case CM_DRAW:
+		b += promcon_start(conp, b);
+		if (px != conp->vc_x || py != conp->vc_y) {
+			px = conp->vc_x;
+			py = conp->vc_y;
+			b += sprintf(b, "\033[%d;%dH", py + 1, px + 1);
+		}
+		promcon_puts(buf, b - buf);
+		break;
+	}
+}
+
+static int
+promcon_blank(struct vc_data *conp, int blank, int mode_switch)
+{
+	if (blank) {
+		promcon_puts("\033[H\033[J\033[7m \033[m\b", 15);
+		return 0;
+	} else {
+		/* Let console.c redraw */
+		return 1;
+	}
+}
+
+static int
+promcon_scroll(struct vc_data *conp, int t, int b, int dir, int count)
+{
+	unsigned char buf[256], *p = buf;
+	unsigned short *s;
+	int i;
+
+	if (console_blanked)
+		return 0;
+	
+	p += promcon_start(conp, p);
+
+	switch (dir) {
+	case SM_UP:
+		if (b == ph + 1) {
+			p += sprintf(p, "\033[%dH\033[%dM", t + 1, count);
+			px = 0;
+			py = t;
+			p += promcon_end(conp, p);
+			promcon_puts(buf, p - buf);
+			break;
+		}
+
+		s = (unsigned short *)(conp->vc_origin
+				       + (t + count) * conp->vc_size_row);
+
+		p += sprintf(p, "\033[%dH", t + 1);
+
+		for (i = t; i < b - count; i++)
+			s = promcon_repaint_line(s, buf, &p);
+
+		for (; i < b - 1; i++) {
+			strcpy(p, "\033[K\n");
+			p += 4;
+			if (p - buf >= 224) {
+				promcon_puts(buf, p - buf);
+				p = buf;
+			}
+		}
+
+		strcpy(p, "\033[K");
+		p += 3;
+
+		p += promcon_end(conp, p);
+		promcon_puts(buf, p - buf);
+		break;
+
+	case SM_DOWN:
+		if (b == ph + 1) {
+			p += sprintf(p, "\033[%dH\033[%dL", t + 1, count);
+			px = 0;
+			py = t;
+			p += promcon_end(conp, p);
+			promcon_puts(buf, p - buf);
+			break;
+		}
+
+		s = (unsigned short *)(conp->vc_origin + t * conp->vc_size_row);
+
+		p += sprintf(p, "\033[%dH", t + 1);
+
+		for (i = t; i < t + count; i++) {
+			strcpy(p, "\033[K\n");
+			p += 4;
+			if (p - buf >= 224) {
+				promcon_puts(buf, p - buf);
+				p = buf;
+			}
+		}
+
+		for (; i < b; i++)
+			s = promcon_repaint_line(s, buf, &p);
+
+		p += promcon_end(conp, p);
+		promcon_puts(buf, p - buf);
+		break;
+	}
+
+	return 0;
+}
+
+#if !(PROMCON_COLOR)
+static u8 promcon_build_attr(struct vc_data *conp, u8 _color, u8 _intensity, u8 _blink, u8 _underline, u8 _reverse)
+{
+	return (_reverse) ? 0xf : 0x7;
+}
+#endif
+
+/*
+ *  The console 'switch' structure for the VGA based console
+ */
+
+static int promcon_dummy(void)
+{
+        return 0;
+}
+
+#define DUMMY (void *) promcon_dummy
+
+const struct consw prom_con = {
+	.owner =		THIS_MODULE,
+	.con_startup =		promcon_startup,
+	.con_init =		promcon_init,
+	.con_deinit =		promcon_deinit,
+	.con_clear =		promcon_clear,
+	.con_putc =		promcon_putc,
+	.con_putcs =		promcon_putcs,
+	.con_cursor =		promcon_cursor,
+	.con_scroll =		promcon_scroll,
+	.con_bmove =		promcon_bmove,
+	.con_switch =		promcon_switch,
+	.con_blank =		promcon_blank,
+	.con_set_palette =	DUMMY,
+	.con_scrolldelta =	DUMMY,
+#if !(PROMCON_COLOR)
+	.con_build_attr =	promcon_build_attr,
+#endif
+};
+
+void __init prom_con_init(void)
+{
+#ifdef CONFIG_DUMMY_CONSOLE
+	if (conswitchp == &dummy_con)
+		take_over_console(&prom_con, 0, MAX_NR_CONSOLES-1, 1);
+	else
+#endif
+	if (conswitchp == &prom_con)
+		promcon_init_unimap(vc_cons[fg_console].d);
+}