summaryrefslogtreecommitdiffstats
path: root/drivers/video/console/sticon.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--drivers/video/console/sticon.c367
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
new file mode 100644
index 000000000..559a7305c
--- /dev/null
+++ b/drivers/video/console/sticon.c
@@ -0,0 +1,367 @@
+/*
+ * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
+ *
+ * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
+ * Copyright (C) 2002 Helge Deller <deller@gmx.de>
+ *
+ * Based on linux/drivers/video/vgacon.c and linux/drivers/video/fbcon.c,
+ * which were
+ *
+ * Created 28 Sep 1997 by Geert Uytterhoeven
+ * Rewritten by Martin Mares <mj@ucw.cz>, July 1998
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ * 1995 Jay Estabrook
+ * Copyright (C) 1995 Geert Uytterhoeven
+ * Copyright (C) 1993 Bjoern Brauel
+ * Roman Hodek
+ * Copyright (C) 1993 Hamish Macdonald
+ * Greg Harp
+ * Copyright (C) 1994 David Carter [carter@compsci.bristol.ac.uk]
+ *
+ * with work by William Rucklidge (wjr@cs.cornell.edu)
+ * Geert Uytterhoeven
+ * Jes Sorensen (jds@kom.auc.dk)
+ * Martin Apel
+ * with work by Guenther Kelleter
+ * Martin Schaller
+ * Andreas Schwab
+ * Emmanuel Marty (core@ggi-project.org)
+ * Jakub Jelinek (jj@ultra.linux.cz)
+ * Martin Mares <mj@ucw.cz>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/errno.h>
+#include <linux/vt_kern.h>
+#include <linux/kd.h>
+#include <linux/selection.h>
+#include <linux/module.h>
+
+#include <asm/io.h>
+
+#include "../fbdev/sticore.h"
+
+/* switching to graphics mode */
+#define BLANK 0
+static int vga_is_gfx;
+
+/* this is the sti_struct used for this console */
+static struct sti_struct *sticon_sti;
+
+/* Software scrollback */
+static unsigned long softback_buf, softback_curr;
+static unsigned long softback_in;
+static unsigned long /* softback_top, */ softback_end;
+static int softback_lines;
+
+/* software cursor */
+static int cursor_drawn;
+#define CURSOR_DRAW_DELAY (1)
+#define DEFAULT_CURSOR_BLINK_RATE (20)
+
+static int vbl_cursor_cnt;
+
+static inline void cursor_undrawn(void)
+{
+ vbl_cursor_cnt = 0;
+ cursor_drawn = 0;
+}
+
+static const char *sticon_startup(void)
+{
+ return "STI console";
+}
+
+static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
+{
+ int redraw_cursor = 0;
+
+ if (vga_is_gfx || console_blanked)
+ return;
+
+ if (conp->vc_mode != KD_TEXT)
+ return;
+#if 0
+ if ((p->cursor_x == xpos) && (p->cursor_y == ypos)) {
+ cursor_undrawn();
+ redraw_cursor = 1;
+ }
+#endif
+
+ sti_putc(sticon_sti, c, ypos, xpos);
+
+ if (redraw_cursor)
+ vbl_cursor_cnt = CURSOR_DRAW_DELAY;
+}
+
+static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
+ int count, int ypos, int xpos)
+{
+ int redraw_cursor = 0;
+
+ if (vga_is_gfx || console_blanked)
+ return;
+
+ if (conp->vc_mode != KD_TEXT)
+ return;
+
+#if 0
+ if ((p->cursor_y == ypos) && (xpos <= p->cursor_x) &&
+ (p->cursor_x < (xpos + count))) {
+ cursor_undrawn();
+ redraw_cursor = 1;
+ }
+#endif
+
+ while (count--) {
+ sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++);
+ }
+
+ if (redraw_cursor)
+ vbl_cursor_cnt = CURSOR_DRAW_DELAY;
+}
+
+static void sticon_cursor(struct vc_data *conp, int mode)
+{
+ unsigned short car1;
+
+ car1 = conp->vc_screenbuf[conp->vc_x + conp->vc_y * conp->vc_cols];
+ switch (mode) {
+ case CM_ERASE:
+ sti_putc(sticon_sti, car1, conp->vc_y, conp->vc_x);
+ break;
+ case CM_MOVE:
+ case CM_DRAW:
+ switch (conp->vc_cursor_type & 0x0f) {
+ case CUR_UNDERLINE:
+ case CUR_LOWER_THIRD:
+ case CUR_LOWER_HALF:
+ case CUR_TWO_THIRDS:
+ case CUR_BLOCK:
+ sti_putc(sticon_sti, (car1 & 255) + (0 << 8) + (7 << 11),
+ conp->vc_y, conp->vc_x);
+ break;
+ }
+ break;
+ }
+}
+
+static bool sticon_scroll(struct vc_data *conp, unsigned int t,
+ unsigned int b, enum con_scroll dir, unsigned int count)
+{
+ struct sti_struct *sti = sticon_sti;
+
+ if (vga_is_gfx)
+ return false;
+
+ sticon_cursor(conp, CM_ERASE);
+
+ switch (dir) {
+ case SM_UP:
+ sti_bmove(sti, t + count, 0, t, 0, b - t - count, conp->vc_cols);
+ sti_clear(sti, b - count, 0, count, conp->vc_cols, conp->vc_video_erase_char);
+ break;
+
+ case SM_DOWN:
+ sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols);
+ sti_clear(sti, t, 0, count, conp->vc_cols, conp->vc_video_erase_char);
+ break;
+ }
+
+ return false;
+}
+
+static void sticon_init(struct vc_data *c, int init)
+{
+ struct sti_struct *sti = sticon_sti;
+ int vc_cols, vc_rows;
+
+ sti_set(sti, 0, 0, sti_onscreen_y(sti), sti_onscreen_x(sti), 0);
+ vc_cols = sti_onscreen_x(sti) / sti->font_width;
+ vc_rows = sti_onscreen_y(sti) / sti->font_height;
+ c->vc_can_do_color = 1;
+
+ if (init) {
+ c->vc_cols = vc_cols;
+ c->vc_rows = vc_rows;
+ } else {
+ /* vc_rows = (c->vc_rows > vc_rows) ? vc_rows : c->vc_rows; */
+ /* vc_cols = (c->vc_cols > vc_cols) ? vc_cols : c->vc_cols; */
+ vc_resize(c, vc_cols, vc_rows);
+/* vc_resize_con(vc_rows, vc_cols, c->vc_num); */
+ }
+}
+
+static void sticon_deinit(struct vc_data *c)
+{
+}
+
+static void sticon_clear(struct vc_data *conp, int sy, int sx, int height,
+ int width)
+{
+ if (!height || !width)
+ return;
+
+ sti_clear(sticon_sti, sy, sx, height, width, conp->vc_video_erase_char);
+}
+
+static int sticon_switch(struct vc_data *conp)
+{
+ return 1; /* needs refreshing */
+}
+
+static int sticon_set_origin(struct vc_data *conp)
+{
+ return 0;
+}
+
+static int sticon_blank(struct vc_data *c, int blank, int mode_switch)
+{
+ if (blank == 0) {
+ if (mode_switch)
+ vga_is_gfx = 0;
+ return 1;
+ }
+ sticon_set_origin(c);
+ sti_clear(sticon_sti, 0,0, c->vc_rows, c->vc_cols, BLANK);
+ if (mode_switch)
+ vga_is_gfx = 1;
+ return 1;
+}
+
+static u16 *sticon_screen_pos(struct vc_data *conp, int offset)
+{
+ int line;
+ unsigned long p;
+
+ if (conp->vc_num != fg_console || !softback_lines)
+ return (u16 *)(conp->vc_origin + offset);
+ line = offset / conp->vc_size_row;
+ if (line >= softback_lines)
+ return (u16 *)(conp->vc_origin + offset - softback_lines * conp->vc_size_row);
+ p = softback_curr + offset;
+ if (p >= softback_end)
+ p += softback_buf - softback_end;
+ return (u16 *)p;
+}
+
+static unsigned long sticon_getxy(struct vc_data *conp, unsigned long pos,
+ int *px, int *py)
+{
+ int x, y;
+ unsigned long ret;
+ if (pos >= conp->vc_origin && pos < conp->vc_scr_end) {
+ unsigned long offset = (pos - conp->vc_origin) / 2;
+
+ x = offset % conp->vc_cols;
+ y = offset / conp->vc_cols;
+ if (conp->vc_num == fg_console)
+ y += softback_lines;
+ ret = pos + (conp->vc_cols - x) * 2;
+ } else if (conp->vc_num == fg_console && softback_lines) {
+ unsigned long offset = pos - softback_curr;
+
+ if (pos < softback_curr)
+ offset += softback_end - softback_buf;
+ offset /= 2;
+ x = offset % conp->vc_cols;
+ y = offset / conp->vc_cols;
+ ret = pos + (conp->vc_cols - x) * 2;
+ if (ret == softback_end)
+ ret = softback_buf;
+ if (ret == softback_in)
+ ret = conp->vc_origin;
+ } else {
+ /* Should not happen */
+ x = y = 0;
+ ret = conp->vc_origin;
+ }
+ if (px) *px = x;
+ if (py) *py = y;
+ return ret;
+}
+
+static u8 sticon_build_attr(struct vc_data *conp, u8 color, u8 intens,
+ u8 blink, u8 underline, u8 reverse, u8 italic)
+{
+ u8 fg = color & 7;
+ u8 bg = (color & 0x70) >> 4;
+
+ if (reverse)
+ return (fg << 3) | bg;
+ else
+ return (bg << 3) | fg;
+}
+
+static void sticon_invert_region(struct vc_data *conp, u16 *p, int count)
+{
+ int col = 1; /* vga_can_do_color; */
+
+ while (count--) {
+ u16 a = scr_readw(p);
+
+ if (col)
+ a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
+ else
+ a = ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700;
+
+ scr_writew(a, p++);
+ }
+}
+
+static void sticon_save_screen(struct vc_data *conp)
+{
+}
+
+static const struct consw sti_con = {
+ .owner = THIS_MODULE,
+ .con_startup = sticon_startup,
+ .con_init = sticon_init,
+ .con_deinit = sticon_deinit,
+ .con_clear = sticon_clear,
+ .con_putc = sticon_putc,
+ .con_putcs = sticon_putcs,
+ .con_cursor = sticon_cursor,
+ .con_scroll = sticon_scroll,
+ .con_switch = sticon_switch,
+ .con_blank = sticon_blank,
+ .con_set_origin = sticon_set_origin,
+ .con_save_screen = sticon_save_screen,
+ .con_build_attr = sticon_build_attr,
+ .con_invert_region = sticon_invert_region,
+ .con_screen_pos = sticon_screen_pos,
+ .con_getxy = sticon_getxy,
+};
+
+
+
+static int __init sticonsole_init(void)
+{
+ int err;
+ /* already initialized ? */
+ if (sticon_sti)
+ return 0;
+
+ sticon_sti = sti_get_rom(0);
+ if (!sticon_sti)
+ return -ENODEV;
+
+ if (conswitchp == &dummy_con) {
+ printk(KERN_INFO "sticon: Initializing STI text console.\n");
+ console_lock();
+ err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1, 1);
+ console_unlock();
+ return err;
+ }
+ return 0;
+}
+
+module_init(sticonsole_init);
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 09:32:09 +0000