| /* |
| * 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 attr = ((color & 0x70) >> 1) | ((color & 7)); |
| |
| if (reverse) { |
| color = ((color >> 3) & 0x7) | ((color & 0x7) << 3); |
| } |
| |
| return attr; |
| } |
| |
| 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"); |
