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-rw-r--r--drivers/video/console/sticon.c408
1 files changed, 408 insertions, 0 deletions
diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c
new file mode 100644
index 000000000..f304163e8
--- /dev/null
+++ b/drivers/video/console/sticon.c
@@ -0,0 +1,408 @@
+/*
+ * linux/drivers/video/console/sticon.c - console driver using HP's STI firmware
+ *
+ * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
+ * Copyright (C) 2002-2020 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 <linux/slab.h>
+#include <linux/font.h>
+#include <linux/crc32.h>
+#include <linux/fb.h>
+
+#include <asm/io.h>
+
+#include "../fbdev/sticore.h"
+
+/* switching to graphics mode */
+#define BLANK 0
+static int vga_is_gfx;
+
+#define STI_DEF_FONT sticon_sti->font
+
+/* borrowed from fbcon.c */
+#define FNTREFCOUNT(fd) (fd->refcount)
+#define FNTCRC(fd) (fd->crc)
+static struct sti_cooked_font *font_data[MAX_NR_CONSOLES];
+
+/* this is the sti_struct used for this console */
+static struct sti_struct *sticon_sti;
+
+static const char *sticon_startup(void)
+{
+ return "STI console";
+}
+
+static void sticon_putc(struct vc_data *conp, int c, int ypos, int xpos)
+{
+ if (vga_is_gfx || console_blanked)
+ return;
+
+ if (conp->vc_mode != KD_TEXT)
+ return;
+
+ sti_putc(sticon_sti, c, ypos, xpos, font_data[conp->vc_num]);
+}
+
+static void sticon_putcs(struct vc_data *conp, const unsigned short *s,
+ int count, int ypos, int xpos)
+{
+ if (vga_is_gfx || console_blanked)
+ return;
+
+ if (conp->vc_mode != KD_TEXT)
+ return;
+
+ while (count--) {
+ sti_putc(sticon_sti, scr_readw(s++), ypos, xpos++,
+ font_data[conp->vc_num]);
+ }
+}
+
+static void sticon_cursor(struct vc_data *conp, int mode)
+{
+ unsigned short car1;
+
+ /* no cursor update if screen is blanked */
+ if (vga_is_gfx || console_blanked)
+ return;
+
+ car1 = conp->vc_screenbuf[conp->state.x + conp->state.y * conp->vc_cols];
+ switch (mode) {
+ case CM_ERASE:
+ sti_putc(sticon_sti, car1, conp->state.y, conp->state.x,
+ font_data[conp->vc_num]);
+ break;
+ case CM_MOVE:
+ case CM_DRAW:
+ switch (CUR_SIZE(conp->vc_cursor_type)) {
+ 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->state.y, conp->state.x, font_data[conp->vc_num]);
+ 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,
+ font_data[conp->vc_num]);
+ sti_clear(sti, b - count, 0, count, conp->vc_cols,
+ conp->vc_video_erase_char, font_data[conp->vc_num]);
+ break;
+
+ case SM_DOWN:
+ sti_bmove(sti, t, 0, t + count, 0, b - t - count, conp->vc_cols,
+ font_data[conp->vc_num]);
+ sti_clear(sti, t, 0, count, conp->vc_cols,
+ conp->vc_video_erase_char, font_data[conp->vc_num]);
+ break;
+ }
+
+ return false;
+}
+
+static int sticon_set_def_font(int unit, struct console_font *op)
+{
+ if (font_data[unit] != STI_DEF_FONT) {
+ if (--FNTREFCOUNT(font_data[unit]) == 0) {
+ kfree(font_data[unit]->raw_ptr);
+ kfree(font_data[unit]);
+ }
+ font_data[unit] = STI_DEF_FONT;
+ }
+
+ return 0;
+}
+
+static int sticon_set_font(struct vc_data *vc, struct console_font *op)
+{
+ struct sti_struct *sti = sticon_sti;
+ int vc_cols, vc_rows, vc_old_cols, vc_old_rows;
+ int unit = vc->vc_num;
+ int w = op->width;
+ int h = op->height;
+ int size, i, bpc, pitch;
+ struct sti_rom_font *new_font;
+ struct sti_cooked_font *cooked_font;
+ unsigned char *data = op->data, *p;
+
+ if ((w < 6) || (h < 6) || (w > 32) || (h > 32)
+ || (op->charcount != 256 && op->charcount != 512))
+ return -EINVAL;
+ pitch = ALIGN(w, 8) / 8;
+ bpc = pitch * h;
+ size = bpc * op->charcount;
+
+ new_font = kmalloc(sizeof(*new_font) + size, STI_LOWMEM);
+ if (!new_font)
+ return -ENOMEM;
+
+ new_font->first_char = 0;
+ new_font->last_char = op->charcount - 1;
+ new_font->width = w;
+ new_font->height = h;
+ new_font->font_type = STI_FONT_HPROMAN8;
+ new_font->bytes_per_char = bpc;
+ new_font->underline_height = 0;
+ new_font->underline_pos = 0;
+
+ cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL);
+ if (!cooked_font) {
+ kfree(new_font);
+ return -ENOMEM;
+ }
+ cooked_font->raw = new_font;
+ cooked_font->raw_ptr = new_font;
+ cooked_font->width = w;
+ cooked_font->height = h;
+ FNTREFCOUNT(cooked_font) = 0; /* usage counter */
+
+ p = (unsigned char *) new_font;
+ p += sizeof(*new_font);
+ for (i = 0; i < op->charcount; i++) {
+ memcpy(p, data, bpc);
+ data += pitch*32;
+ p += bpc;
+ }
+ FNTCRC(cooked_font) = crc32(0, new_font, size + sizeof(*new_font));
+ sti_font_convert_bytemode(sti, cooked_font);
+ new_font = cooked_font->raw_ptr;
+
+ /* check if font is already used by other console */
+ for (i = 0; i < MAX_NR_CONSOLES; i++) {
+ if (font_data[i] != STI_DEF_FONT
+ && (FNTCRC(font_data[i]) == FNTCRC(cooked_font))) {
+ kfree(new_font);
+ kfree(cooked_font);
+ /* current font is the same as the new one */
+ if (i == unit)
+ return 0;
+ cooked_font = font_data[i];
+ new_font = cooked_font->raw_ptr;
+ break;
+ }
+ }
+
+ /* clear screen with old font: we now may have less rows */
+ vc_old_rows = vc->vc_rows;
+ vc_old_cols = vc->vc_cols;
+ sti_clear(sticon_sti, 0, 0, vc_old_rows, vc_old_cols,
+ vc->vc_video_erase_char, font_data[vc->vc_num]);
+
+ /* delete old font in case it is a user font */
+ sticon_set_def_font(unit, NULL);
+
+ FNTREFCOUNT(cooked_font)++;
+ font_data[unit] = cooked_font;
+
+ vc_cols = sti_onscreen_x(sti) / cooked_font->width;
+ vc_rows = sti_onscreen_y(sti) / cooked_font->height;
+ vc_resize(vc, vc_cols, vc_rows);
+
+ /* need to repaint screen if cols & rows are same as old font */
+ if (vc_cols == vc_old_cols && vc_rows == vc_old_rows)
+ update_screen(vc);
+
+ return 0;
+}
+
+static int sticon_font_default(struct vc_data *vc, struct console_font *op, char *name)
+{
+ return sticon_set_def_font(vc->vc_num, op);
+}
+
+static int sticon_font_set(struct vc_data *vc, struct console_font *font,
+ unsigned int flags)
+{
+ return sticon_set_font(vc, font);
+}
+
+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_resize(c, vc_cols, vc_rows);
+ }
+}
+
+static void sticon_deinit(struct vc_data *c)
+{
+ int i;
+
+ /* free memory used by user font */
+ for (i = 0; i < MAX_NR_CONSOLES; i++)
+ sticon_set_def_font(i, NULL);
+}
+
+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, font_data[conp->vc_num]);
+}
+
+static int sticon_switch(struct vc_data *conp)
+{
+ return 1; /* needs refreshing */
+}
+
+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;
+ }
+ sti_clear(sticon_sti, 0, 0, c->vc_rows, c->vc_cols, BLANK,
+ font_data[c->vc_num]);
+ if (mode_switch)
+ vga_is_gfx = 1;
+ return 1;
+}
+
+static u8 sticon_build_attr(struct vc_data *conp, u8 color,
+ enum vc_intensity intens,
+ bool blink, bool underline, bool reverse,
+ bool 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 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_font_set = sticon_font_set,
+ .con_font_default = sticon_font_default,
+ .con_build_attr = sticon_build_attr,
+ .con_invert_region = sticon_invert_region,
+};
+
+
+
+static int __init sticonsole_init(void)
+{
+ int err, i;
+
+ /* already initialized ? */
+ if (sticon_sti)
+ return 0;
+
+ sticon_sti = sti_get_rom(0);
+ if (!sticon_sti)
+ return -ENODEV;
+
+ for (i = 0; i < MAX_NR_CONSOLES; i++)
+ font_data[i] = STI_DEF_FONT;
+
+ pr_info("sticon: Initializing STI text console on %s at [%s]\n",
+ sticon_sti->sti_data->inq_outptr.dev_name,
+ sticon_sti->pa_path);
+ console_lock();
+ err = do_take_over_console(&sti_con, 0, MAX_NR_CONSOLES - 1,
+ PAGE0->mem_cons.cl_class != CL_DUPLEX);
+ console_unlock();
+
+ return err;
+}
+
+module_init(sticonsole_init);
+MODULE_LICENSE("GPL");
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