aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/video/console/promcon.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video/console/promcon.c')
-rw-r--r--drivers/video/console/promcon.c599
1 files changed, 599 insertions, 0 deletions
diff --git a/drivers/video/console/promcon.c b/drivers/video/console/promcon.c
new file mode 100644
index 000000000000..04f42fcaac59
--- /dev/null
+++ b/drivers/video/console/promcon.c
@@ -0,0 +1,599 @@
+/* $Id: promcon.c,v 1.17 2000/07/26 23:02:52 davem 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/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.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 __init *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 __init
+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);
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.