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- /*
- * linux/drivers/char/console.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- */
-
- /*
- * console.c
- *
- * This module exports the console io functions:
- *
- * 'void do_keyboard_interrupt(void)'
- *
- * 'int vc_allocate(unsigned int console)'
- * 'int vc_cons_allocated(unsigned int console)'
- * 'int vc_resize(unsigned long lines, unsigned long cols)'
- * 'void vc_disallocate(unsigned int currcons)'
- *
- * 'long con_init(long)'
- * 'int con_open(struct tty_struct *tty, struct file * filp)'
- * 'void con_write(struct tty_struct * tty)'
- * 'void console_print(const char * b)'
- * 'void update_screen(int new_console)'
- *
- * 'void do_blank_screen(int)'
- * 'void do_unblank_screen(void)'
- * 'void poke_blanked_console(void)'
- *
- * 'unsigned short *screen_pos(int currcons, int w_offset, int viewed)'
- * 'void complement_pos(int currcons, int offset)'
- * 'void invert_screen(int currcons, int offset, int count, int shift)'
- *
- * 'void scrollback(int lines)'
- * 'void scrollfront(int lines)'
- *
- * 'int con_get_font(char *)'
- * 'int con_set_font(char *)'
- *
- * 'void mouse_report(struct tty_struct * tty, int butt, int mrx, int mry)'
- * 'int mouse_reporting(void)'
- *
- * Hopefully this will be a rather complete VT102 implementation.
- *
- * Beeping thanks to John T Kohl.
- *
- * Virtual Consoles, Screen Blanking, Screen Dumping, Color, Graphics
- * Chars, and VT100 enhancements by Peter MacDonald.
- *
- * Copy and paste function by Andrew Haylett,
- * some enhancements by Alessandro Rubini.
- *
- * User definable mapping table and font loading by Eugene G. Crosser,
- * <crosser@pccross.msk.su>
- *
- * Code to check for different video-cards mostly by Galen Hunt,
- * <g-hunt@ee.utah.edu>
- *
- * Rudimentary ISO 10646/Unicode/UTF-8 character set support by
- * Markus Kuhn, <mskuhn@immd4.informatik.uni-erlangen.de>.
- *
- * Dynamic allocation of consoles, aeb@cwi.nl, May 1994
- * Resizing of consoles, aeb, 940926
- *
- * Code for xterm like mouse click reporting by Peter Orbaek 20-Jul-94
- * <poe@daimi.aau.dk>
- *
- */
-
- #define BLANK 0x0020
- #define CAN_LOAD_EGA_FONTS /* undefine if the user must not do this */
-
- /* A bitmap for codes <32. A bit of 1 indicates that the code
- * corresponding to that bit number invokes some special action
- * (such as cursor movement) and should not be displayed as a
- * glyph unless the disp_ctrl mode is explicitly enabled.
- */
- #define CTRL_ACTION 0xd00ff80
-
- /*
- * NOTE!!! We sometimes disable and enable interrupts for a short while
- * (to put a word in video IO), but this will work even for keyboard
- * interrupts. We know interrupts aren't enabled when getting a keyboard
- * interrupt, as we use trap-gates. Hopefully all is well.
- */
-
- #include <linux/sched.h>
- #include <linux/timer.h>
- #include <linux/interrupt.h>
- #include <linux/tty.h>
- #include <linux/tty_flip.h>
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/string.h>
- #include <linux/errno.h>
- #include <linux/kd.h>
- #include <linux/malloc.h>
- #include <linux/major.h>
- #include <linux/mm.h>
- #include <linux/ioport.h>
-
- #include <asm/io.h>
- #include <asm/system.h>
- #include <asm/segment.h>
- #include <asm/bitops.h>
-
- #include "kbd_kern.h"
- #include "vt_kern.h"
- #include "consolemap.h"
- #include "selection.h"
-
-
- #ifndef MIN
- #define MIN(a,b) ((a) < (b) ? (a) : (b))
- #endif
-
- struct tty_driver console_driver;
- static int console_refcount;
- static struct tty_struct *console_table[MAX_NR_CONSOLES];
- static struct termios *console_termios[MAX_NR_CONSOLES];
- static struct termios *console_termios_locked[MAX_NR_CONSOLES];
-
- #define NPAR 16
-
- static void con_setsize(unsigned long rows, unsigned long cols);
- static void vc_init(unsigned int console, unsigned long rows, unsigned long cols,
- int do_clear);
- static void get_scrmem(int currcons);
- static void set_scrmem(int currcons, long offset);
- static void set_origin(int currcons);
- static void blank_screen(void);
- static void unblank_screen(void);
- void poke_blanked_console(void);
- static void gotoxy(int currcons, int new_x, int new_y);
- static void save_cur(int currcons);
- static inline void set_cursor(int currcons);
- static void reset_terminal(int currcons, int do_clear);
- extern void reset_vc(unsigned int new_console);
- extern void vt_init(void);
- extern void register_console(void (*proc)(const char *));
- extern void vesa_blank(void);
- extern void vesa_unblank(void);
- extern void compute_shiftstate(void);
- extern int conv_uni_to_pc(unsigned long ucs);
-
- /* Description of the hardware situation */
- static unsigned char video_type; /* Type of display being used */
- static unsigned long video_mem_base; /* Base of video memory */
- static unsigned long video_mem_term; /* End of video memory */
- static unsigned char video_page; /* Initial video page (unused) */
- /* these two also used in vesa_blank.c */
- unsigned short video_port_reg; /* Video register select port */
- unsigned short video_port_val; /* Video register value port */
- /* these three also used in selection.c */
- unsigned long video_num_columns; /* Number of text columns */
- unsigned long video_num_lines; /* Number of text lines */
- unsigned long video_size_row;
- static unsigned long video_screen_size;
- static int can_do_color = 0;
- static int printable = 0; /* Is console ready for printing? */
-
- static unsigned short *vc_scrbuf[MAX_NR_CONSOLES];
-
- static int console_blanked = 0;
- static int blankinterval = 10*60*HZ;
- static long blank_origin, blank__origin, unblank_origin;
-
- struct vc_data {
- unsigned long vc_screenbuf_size;
- unsigned short vc_video_erase_char; /* Background erase character */
- unsigned char vc_attr; /* Current attributes */
- unsigned char vc_def_color; /* Default colors */
- unsigned char vc_color; /* Foreground & background */
- unsigned char vc_s_color; /* Saved foreground & background */
- unsigned char vc_ulcolor; /* Colour for underline mode */
- unsigned char vc_halfcolor; /* Colour for half intensity mode */
- unsigned long vc_origin; /* Used for EGA/VGA fast scroll */
- unsigned long vc_scr_end; /* Used for EGA/VGA fast scroll */
- unsigned long vc_pos;
- unsigned long vc_x,vc_y;
- unsigned long vc_top,vc_bottom;
- unsigned long vc_state;
- unsigned long vc_npar,vc_par[NPAR];
- unsigned long vc_video_mem_start; /* Start of video RAM */
- unsigned long vc_video_mem_end; /* End of video RAM (sort of) */
- unsigned long vc_saved_x;
- unsigned long vc_saved_y;
- /* mode flags */
- unsigned long vc_charset : 1; /* Character set G0 / G1 */
- unsigned long vc_s_charset : 1; /* Saved character set */
- unsigned long vc_disp_ctrl : 1; /* Display chars < 32? */
- unsigned long vc_toggle_meta : 1; /* Toggle high bit? */
- unsigned long vc_decscnm : 1; /* Screen Mode */
- unsigned long vc_decom : 1; /* Origin Mode */
- unsigned long vc_decawm : 1; /* Autowrap Mode */
- unsigned long vc_deccm : 1; /* Cursor Visible */
- unsigned long vc_decim : 1; /* Insert Mode */
- unsigned long vc_deccolm : 1; /* 80/132 Column Mode */
- /* attribute flags */
- unsigned long vc_intensity : 2; /* 0=half-bright, 1=normal, 2=bold */
- unsigned long vc_underline : 1;
- unsigned long vc_blink : 1;
- unsigned long vc_reverse : 1;
- unsigned long vc_s_intensity : 2; /* saved rendition */
- unsigned long vc_s_underline : 1;
- unsigned long vc_s_blink : 1;
- unsigned long vc_s_reverse : 1;
- /* misc */
- unsigned long vc_ques : 1;
- unsigned long vc_need_wrap : 1;
- unsigned long vc_has_scrolled : 1; /* Info for unblank_screen */
- unsigned long vc_kmalloced : 1; /* kfree_s() needed */
- unsigned long vc_report_mouse : 2;
- unsigned char vc_utf : 1; /* Unicode UTF-8 encoding */
- unsigned char vc_utf_count;
- unsigned long vc_utf_char;
- unsigned long vc_tab_stop[5]; /* Tab stops. 160 columns. */
- unsigned char * vc_translate;
- unsigned char vc_G0_charset;
- unsigned char vc_G1_charset;
- unsigned char vc_saved_G0;
- unsigned char vc_saved_G1;
- /* additional information is in vt_kern.h */
- };
-
- static struct vc {
- struct vc_data *d;
-
- /* might add scrmem, vt_struct, kbd at some time,
- to have everything in one place - the disadvantage
- would be that vc_cons etc can no longer be static */
- } vc_cons [MAX_NR_CONSOLES];
-
- #define screenbuf_size (vc_cons[currcons].d->vc_screenbuf_size)
- #define origin (vc_cons[currcons].d->vc_origin)
- #define scr_end (vc_cons[currcons].d->vc_scr_end)
- #define pos (vc_cons[currcons].d->vc_pos)
- #define top (vc_cons[currcons].d->vc_top)
- #define bottom (vc_cons[currcons].d->vc_bottom)
- #define x (vc_cons[currcons].d->vc_x)
- #define y (vc_cons[currcons].d->vc_y)
- #define vc_state (vc_cons[currcons].d->vc_state)
- #define npar (vc_cons[currcons].d->vc_npar)
- #define par (vc_cons[currcons].d->vc_par)
- #define ques (vc_cons[currcons].d->vc_ques)
- #define attr (vc_cons[currcons].d->vc_attr)
- #define saved_x (vc_cons[currcons].d->vc_saved_x)
- #define saved_y (vc_cons[currcons].d->vc_saved_y)
- #define translate (vc_cons[currcons].d->vc_translate)
- #define G0_charset (vc_cons[currcons].d->vc_G0_charset)
- #define G1_charset (vc_cons[currcons].d->vc_G1_charset)
- #define saved_G0 (vc_cons[currcons].d->vc_saved_G0)
- #define saved_G1 (vc_cons[currcons].d->vc_saved_G1)
- #define utf (vc_cons[currcons].d->vc_utf)
- #define utf_count (vc_cons[currcons].d->vc_utf_count)
- #define utf_char (vc_cons[currcons].d->vc_utf_char)
- #define video_mem_start (vc_cons[currcons].d->vc_video_mem_start)
- #define video_mem_end (vc_cons[currcons].d->vc_video_mem_end)
- #define video_erase_char (vc_cons[currcons].d->vc_video_erase_char)
- #define disp_ctrl (vc_cons[currcons].d->vc_disp_ctrl)
- #define toggle_meta (vc_cons[currcons].d->vc_toggle_meta)
- #define decscnm (vc_cons[currcons].d->vc_decscnm)
- #define decom (vc_cons[currcons].d->vc_decom)
- #define decawm (vc_cons[currcons].d->vc_decawm)
- #define deccm (vc_cons[currcons].d->vc_deccm)
- #define decim (vc_cons[currcons].d->vc_decim)
- #define deccolm (vc_cons[currcons].d->vc_deccolm)
- #define need_wrap (vc_cons[currcons].d->vc_need_wrap)
- #define has_scrolled (vc_cons[currcons].d->vc_has_scrolled)
- #define kmalloced (vc_cons[currcons].d->vc_kmalloced)
- #define report_mouse (vc_cons[currcons].d->vc_report_mouse)
- #define color (vc_cons[currcons].d->vc_color)
- #define s_color (vc_cons[currcons].d->vc_s_color)
- #define def_color (vc_cons[currcons].d->vc_def_color)
- #define foreground (color & 0x0f)
- #define background (color & 0xf0)
- #define charset (vc_cons[currcons].d->vc_charset)
- #define s_charset (vc_cons[currcons].d->vc_s_charset)
- #define intensity (vc_cons[currcons].d->vc_intensity)
- #define underline (vc_cons[currcons].d->vc_underline)
- #define blink (vc_cons[currcons].d->vc_blink)
- #define reverse (vc_cons[currcons].d->vc_reverse)
- #define s_intensity (vc_cons[currcons].d->vc_s_intensity)
- #define s_underline (vc_cons[currcons].d->vc_s_underline)
- #define s_blink (vc_cons[currcons].d->vc_s_blink)
- #define s_reverse (vc_cons[currcons].d->vc_s_reverse)
- #define ulcolor (vc_cons[currcons].d->vc_ulcolor)
- #define halfcolor (vc_cons[currcons].d->vc_halfcolor)
- #define tab_stop (vc_cons[currcons].d->vc_tab_stop)
-
- #define vcmode (vt_cons[currcons]->vc_mode)
- #define structsize (sizeof(struct vc_data) + sizeof(struct vt_struct))
-
- static void memsetw(void * s, unsigned short c, unsigned int count)
- {
- unsigned short * addr = (unsigned short *) s;
-
- count /= 2;
- while (count) {
- count--;
- scr_writew(c, addr++);
- }
- }
-
- static inline void memcpyw(unsigned short *to, unsigned short *from,
- unsigned int count)
- {
- count /= 2;
- while (count) {
- count--;
- scr_writew(scr_readw(from++), to++);
- }
- }
-
- int vc_cons_allocated(unsigned int i)
- {
- return (i < MAX_NR_CONSOLES && vc_cons[i].d);
- }
-
- int vc_allocate(unsigned int i) /* return 0 on success */
- {
- if (i >= MAX_NR_CONSOLES)
- return -ENODEV;
- if (!vc_cons[i].d) {
- long p, q;
-
- /* prevent users from taking too much memory */
- if (i >= MAX_NR_USER_CONSOLES && !suser())
- return -EPERM;
-
- /* due to the granularity of kmalloc, we waste some memory here */
- /* the alloc is done in two steps, to optimize the common situation
- of a 25x80 console (structsize=216, video_screen_size=4000) */
- q = (long) kmalloc(video_screen_size, GFP_KERNEL);
- if (!q)
- return -ENOMEM;
- p = (long) kmalloc(structsize, GFP_KERNEL);
- if (!p) {
- kfree_s((char *) q, video_screen_size);
- return -ENOMEM;
- }
-
- vc_cons[i].d = (struct vc_data *) p;
- p += sizeof(struct vc_data);
- vt_cons[i] = (struct vt_struct *) p;
- vc_scrbuf[i] = (unsigned short *) q;
- vc_cons[i].d->vc_kmalloced = 1;
- vc_cons[i].d->vc_screenbuf_size = video_screen_size;
- vc_init (i, video_num_lines, video_num_columns, 1);
- }
- return 0;
- }
-
- /*
- * Change # of rows and columns (0 means unchanged)
- * [this is to be used together with some user program
- * like resize that changes the hardware videomode]
- */
- int vc_resize(unsigned long lines, unsigned long cols)
- {
- unsigned long cc, ll, ss, sr;
- unsigned long occ, oll, oss, osr;
- unsigned short *p;
- unsigned int currcons, i;
- unsigned short *newscreens[MAX_NR_CONSOLES];
- long ol, nl, rlth, rrem;
-
- cc = (cols ? cols : video_num_columns);
- ll = (lines ? lines : video_num_lines);
- sr = cc << 1;
- ss = sr * ll;
-
- if (ss > video_mem_term - video_mem_base)
- return -ENOMEM;
-
- /*
- * Some earlier version had all consoles of potentially
- * different sizes, but that was really messy.
- * So now we only change if there is room for all consoles
- * of the same size.
- */
- for (currcons = 0; currcons < MAX_NR_CONSOLES; currcons++) {
- if (!vc_cons_allocated(currcons))
- newscreens[currcons] = 0;
- else {
- p = (unsigned short *) kmalloc(ss, GFP_USER);
- if (!p) {
- for (i = 0; i< currcons; i++)
- if (newscreens[i])
- kfree_s(newscreens[i], ss);
- return -ENOMEM;
- }
- newscreens[currcons] = p;
- }
- }
-
- get_scrmem(fg_console);
-
- oll = video_num_lines;
- occ = video_num_columns;
- osr = video_size_row;
- oss = video_screen_size;
-
- video_num_lines = ll;
- video_num_columns = cc;
- video_size_row = sr;
- video_screen_size = ss;
-
- for (currcons = 0; currcons < MAX_NR_CONSOLES; currcons++) {
- if (!vc_cons_allocated(currcons))
- continue;
-
- rlth = MIN(osr, sr);
- rrem = sr - rlth;
- ol = origin;
- nl = (long) newscreens[currcons];
- if (ll < oll)
- ol += (oll - ll) * osr;
-
- while (ol < scr_end) {
- memcpyw((unsigned short *) nl, (unsigned short *) ol, rlth);
- if (rrem)
- memsetw((void *)(nl + rlth), video_erase_char, rrem);
- ol += osr;
- nl += sr;
- }
-
- if (kmalloced)
- kfree_s(vc_scrbuf[currcons], screenbuf_size);
- vc_scrbuf[currcons] = newscreens[currcons];
- kmalloced = 1;
- screenbuf_size = ss;
-
- origin = video_mem_start = (long) vc_scrbuf[currcons];
- scr_end = video_mem_end = video_mem_start + ss;
-
- if (scr_end > nl)
- memsetw((void *) nl, video_erase_char, scr_end - nl);
-
- /* do part of a reset_terminal() */
- top = 0;
- bottom = video_num_lines;
- gotoxy(currcons, x, y);
- save_cur(currcons);
- }
-
- set_scrmem(fg_console, 0);
- set_origin(fg_console);
- set_cursor(fg_console);
-
- return 0;
- }
-
- void vc_disallocate(unsigned int currcons)
- {
- if (vc_cons_allocated(currcons)) {
- if (kmalloced)
- kfree_s(vc_scrbuf[currcons], screenbuf_size);
- if (currcons >= MIN_NR_CONSOLES)
- kfree_s(vc_cons[currcons].d, structsize);
- vc_cons[currcons].d = 0;
- }
- }
-
-
- #define set_kbd(x) set_vc_kbd_mode(kbd_table+currcons,x)
- #define clr_kbd(x) clr_vc_kbd_mode(kbd_table+currcons,x)
- #define is_kbd(x) vc_kbd_mode(kbd_table+currcons,x)
-
- #define decarm VC_REPEAT
- #define decckm VC_CKMODE
- #define kbdapplic VC_APPLIC
- #define lnm VC_CRLF
-
- /*
- * this is what the terminal answers to a ESC-Z or csi0c query.
- */
- #define VT100ID "\033[?1;2c"
- #define VT102ID "\033[?6c"
-
- static unsigned char color_table[] = { 0, 4, 2, 6, 1, 5, 3, 7,
- 8,12,10,14, 9,13,11,15 };
-
- /*
- * gotoxy() must verify all boundaries, because the arguments
- * might also be negative. If the given position is out of
- * bounds, the cursor is placed at the nearest margin.
- */
- static void gotoxy(int currcons, int new_x, int new_y)
- {
- int max_y;
-
- if (new_x < 0)
- x = 0;
- else
- if (new_x >= video_num_columns)
- x = video_num_columns - 1;
- else
- x = new_x;
- if (decom) {
- new_y += top;
- max_y = bottom;
- } else
- max_y = video_num_lines;
- if (new_y < 0)
- y = 0;
- else
- if (new_y >= max_y)
- y = max_y - 1;
- else
- y = new_y;
- pos = origin + y*video_size_row + (x<<1);
- need_wrap = 0;
- }
-
- /*
- * *Very* limited hardware scrollback support..
- */
- static unsigned short __real_origin;
- static unsigned short __origin; /* offset of currently displayed screen */
-
- static inline void __set_origin(unsigned short offset)
- {
- unsigned long flags;
-
- clear_selection();
-
- save_flags(flags); cli();
- __origin = offset;
- outb_p(12, video_port_reg);
- outb_p(offset >> 8, video_port_val);
- outb_p(13, video_port_reg);
- outb_p(offset, video_port_val);
- restore_flags(flags);
- }
-
- void scrollback(int lines)
- {
- if (!lines)
- lines = video_num_lines/2;
- lines *= video_num_columns;
- lines = __origin - lines;
- if (lines < 0)
- lines = 0;
- __set_origin(lines);
- }
-
- void scrollfront(int lines)
- {
- if (!lines)
- lines = video_num_lines/2;
- lines *= video_num_columns;
- lines = __origin + lines;
- if (lines > __real_origin)
- lines = __real_origin;
- __set_origin(lines);
- }
-
- static void set_origin(int currcons)
- {
- if (video_type != VIDEO_TYPE_EGAC && video_type != VIDEO_TYPE_EGAM)
- return;
- if (currcons != fg_console || console_blanked || vcmode == KD_GRAPHICS)
- return;
- __real_origin = (origin-video_mem_base) >> 1;
- __set_origin(__real_origin);
- }
-
- /*
- * Put the cursor just beyond the end of the display adaptor memory.
- */
- static inline void hide_cursor(void)
- {
- /* This is inefficient, we could just put the cursor at 0xffff,
- but perhaps the delays due to the inefficiency are useful for
- some hardware... */
- outb_p(14, video_port_reg);
- outb_p(0xff&((video_mem_term-video_mem_base)>>9), video_port_val);
- outb_p(15, video_port_reg);
- outb_p(0xff&((video_mem_term-video_mem_base)>>1), video_port_val);
- }
-
- static inline void set_cursor(int currcons)
- {
- unsigned long flags;
-
- if (currcons != fg_console || console_blanked || vcmode == KD_GRAPHICS)
- return;
- if (__real_origin != __origin)
- __set_origin(__real_origin);
- save_flags(flags); cli();
- if (deccm) {
- outb_p(14, video_port_reg);
- outb_p(0xff&((pos-video_mem_base)>>9), video_port_val);
- outb_p(15, video_port_reg);
- outb_p(0xff&((pos-video_mem_base)>>1), video_port_val);
- } else
- hide_cursor();
- restore_flags(flags);
- }
-
- static void scrup(int currcons, unsigned int t, unsigned int b)
- {
- int hardscroll = 1;
-
- if (b > video_num_lines || t >= b)
- return;
- if (video_type != VIDEO_TYPE_EGAC && video_type != VIDEO_TYPE_EGAM)
- hardscroll = 0;
- else if (t || b != video_num_lines)
- hardscroll = 0;
- if (hardscroll) {
- origin += video_size_row;
- pos += video_size_row;
- scr_end += video_size_row;
- if (scr_end > video_mem_end) {
- unsigned short * d = (unsigned short *) video_mem_start;
- unsigned short * s = (unsigned short *) origin;
- unsigned int count;
-
- count = (video_num_lines-1)*video_num_columns;
- while (count) {
- count--;
- scr_writew(scr_readw(s++),d++);
- }
- count = video_num_columns;
- while (count) {
- count--;
- scr_writew(video_erase_char, d++);
- }
- scr_end -= origin-video_mem_start;
- pos -= origin-video_mem_start;
- origin = video_mem_start;
- has_scrolled = 1;
- } else {
- unsigned short * d;
- unsigned int count;
-
- d = (unsigned short *) (scr_end - video_size_row);
- count = video_num_columns;
- while (count) {
- count--;
- scr_writew(video_erase_char, d++);
- }
- }
- set_origin(currcons);
- } else {
- unsigned short * d = (unsigned short *) (origin+video_size_row*t);
- unsigned short * s = (unsigned short *) (origin+video_size_row*(t+1));
- unsigned int count = (b-t-1) * video_num_columns;
-
- while (count) {
- count--;
- scr_writew(scr_readw(s++), d++);
- }
- count = video_num_columns;
- while (count) {
- count--;
- scr_writew(video_erase_char, d++);
- }
- }
- }
-
- static void scrdown(int currcons, unsigned int t, unsigned int b)
- {
- unsigned short *d, *s;
- unsigned int count;
-
- if (b > video_num_lines || t >= b)
- return;
- d = (unsigned short *) (origin+video_size_row*b);
- s = (unsigned short *) (origin+video_size_row*(b-1));
- count = (b-t-1)*video_num_columns;
- while (count) {
- count--;
- scr_writew(scr_readw(--s), --d);
- }
- count = video_num_columns;
- while (count) {
- count--;
- scr_writew(video_erase_char, --d);
- }
- has_scrolled = 1;
- }
-
- static void lf(int currcons)
- {
- /* don't scroll if above bottom of scrolling region, or
- * if below scrolling region
- */
- if (y+1 == bottom)
- scrup(currcons,top,bottom);
- else if (y < video_num_lines-1) {
- y++;
- pos += video_size_row;
- }
- need_wrap = 0;
- }
-
- static void ri(int currcons)
- {
- /* don't scroll if below top of scrolling region, or
- * if above scrolling region
- */
- if (y == top)
- scrdown(currcons,top,bottom);
- else if (y > 0) {
- y--;
- pos -= video_size_row;
- }
- need_wrap = 0;
- }
-
- static inline void cr(int currcons)
- {
- pos -= x<<1;
- need_wrap = x = 0;
- }
-
- static inline void bs(int currcons)
- {
- if (x) {
- pos -= 2;
- x--;
- need_wrap = 0;
- }
- }
-
- static inline void del(int currcons)
- {
- /* ignored */
- }
-
- static void csi_J(int currcons, int vpar)
- {
- unsigned long count;
- unsigned short * start;
-
- switch (vpar) {
- case 0: /* erase from cursor to end of display */
- count = (scr_end-pos)>>1;
- start = (unsigned short *) pos;
- break;
- case 1: /* erase from start to cursor */
- count = ((pos-origin)>>1)+1;
- start = (unsigned short *) origin;
- break;
- case 2: /* erase whole display */
- count = video_num_columns * video_num_lines;
- start = (unsigned short *) origin;
- break;
- default:
- return;
- }
- while (count) {
- count--;
- scr_writew(video_erase_char, start++);
- }
- need_wrap = 0;
- }
-
- static void csi_K(int currcons, int vpar)
- {
- unsigned long count;
- unsigned short * start;
-
- switch (vpar) {
- case 0: /* erase from cursor to end of line */
- count = video_num_columns-x;
- start = (unsigned short *) pos;
- break;
- case 1: /* erase from start of line to cursor */
- start = (unsigned short *) (pos - (x<<1));
- count = x+1;
- break;
- case 2: /* erase whole line */
- start = (unsigned short *) (pos - (x<<1));
- count = video_num_columns;
- break;
- default:
- return;
- }
- while (count) {
- count--;
- scr_writew(video_erase_char, start++);
- }
- need_wrap = 0;
- }
-
- static void csi_X(int currcons, int vpar) /* erase the following vpar positions */
- { /* not vt100? */
- unsigned long count;
- unsigned short * start;
-
- if (!vpar)
- vpar++;
-
- start = (unsigned short *) pos;
- count = (vpar > video_num_columns-x) ? (video_num_columns-x) : vpar;
-
- while (count) {
- count--;
- scr_writew(video_erase_char, start++);
- }
- need_wrap = 0;
- }
-
- static void update_attr(int currcons)
- {
- attr = color;
- if (can_do_color) {
- if (underline)
- attr = (attr & 0xf0) | ulcolor;
- else if (intensity == 0)
- attr = (attr & 0xf0) | halfcolor;
- }
- if (reverse ^ decscnm)
- attr = reverse_video_char(attr);
- if (blink)
- attr ^= 0x80;
- if (intensity == 2)
- attr ^= 0x08;
- if (!can_do_color) {
- if (underline)
- attr = (attr & 0xf8) | 0x01;
- else if (intensity == 0)
- attr = (attr & 0xf0) | 0x08;
- }
- if (decscnm)
- video_erase_char = (reverse_video_char(color) << 8) | ' ';
- else
- video_erase_char = (color << 8) | ' ';
- }
-
- static void default_attr(int currcons)
- {
- intensity = 1;
- underline = 0;
- reverse = 0;
- blink = 0;
- color = def_color;
- }
-
- static void csi_m(int currcons)
- {
- int i;
-
- for (i=0;i<=npar;i++)
- switch (par[i]) {
- case 0: /* all attributes off */
- default_attr(currcons);
- break;
- case 1:
- intensity = 2;
- break;
- case 2:
- intensity = 0;
- break;
- case 4:
- underline = 1;
- break;
- case 5:
- blink = 1;
- break;
- case 7:
- reverse = 1;
- break;
- case 10: /* ANSI X3.64-1979 (SCO-ish?)
- * Select primary font, don't display
- * control chars if defined, don't set
- * bit 8 on output.
- */
- translate = set_translate(charset == 0
- ? G0_charset
- : G1_charset);
- disp_ctrl = 0;
- toggle_meta = 0;
- break;
- case 11: /* ANSI X3.64-1979 (SCO-ish?)
- * Select first alternate font, let's
- * chars < 32 be displayed as ROM chars.
- */
- translate = set_translate(NULL_MAP);
- disp_ctrl = 1;
- toggle_meta = 0;
- break;
- case 12: /* ANSI X3.64-1979 (SCO-ish?)
- * Select second alternate font, toggle
- * high bit before displaying as ROM char.
- */
- translate = set_translate(NULL_MAP);
- disp_ctrl = 1;
- toggle_meta = 1;
- break;
- case 21:
- case 22:
- intensity = 1;
- break;
- case 24:
- underline = 0;
- break;
- case 25:
- blink = 0;
- break;
- case 27:
- reverse = 0;
- break;
- case 38: /* ANSI X3.64-1979 (SCO-ish?)
- * Enables underscore, white foreground
- * with white underscore (Linux - use
- * default foreground).
- */
- color = (def_color & 0x0f) | background;
- underline = 1;
- break;
- case 39: /* ANSI X3.64-1979 (SCO-ish?)
- * Disable underline option.
- * Reset colour to default? It did this
- * before...
- */
- color = (def_color & 0x0f) | background;
- underline = 0;
- break;
- case 49:
- color = (def_color & 0xf0) | foreground;
- break;
- default:
- if (par[i] >= 30 && par[i] <= 37)
- color = color_table[par[i]-30]
- | background;
- else if (par[i] >= 40 && par[i] <= 47)
- color = (color_table[par[i]-40]<<4)
- | foreground;
- break;
- }
- update_attr(currcons);
- }
-
- static void respond_string(char * p, struct tty_struct * tty)
- {
- while (*p) {
- tty_insert_flip_char(tty, *p, 0);
- p++;
- }
- tty_schedule_flip(tty);
- }
-
- static void cursor_report(int currcons, struct tty_struct * tty)
- {
- char buf[40];
-
- sprintf(buf, "\033[%ld;%ldR", y + (decom ? top+1 : 1), x+1);
- respond_string(buf, tty);
- }
-
- static inline void status_report(struct tty_struct * tty)
- {
- respond_string("\033[0n", tty); /* Terminal ok */
- }
-
- static inline void respond_ID(struct tty_struct * tty)
- {
- respond_string(VT102ID, tty);
- }
-
- void mouse_report(struct tty_struct * tty, int butt, int mrx, int mry)
- {
- char buf[8];
-
- sprintf(buf, "\033[M%c%c%c", (char)(' ' + butt), (char)('!' + mrx),
- (char)('!' + mry));
- respond_string(buf, tty);
- }
-
- /* invoked via ioctl(TIOCLINUX) */
- int mouse_reporting(void)
- {
- int currcons = fg_console;
-
- return report_mouse;
- }
-
- static inline unsigned short *screenpos(int currcons, int offset, int viewed)
- {
- unsigned short *p = (unsigned short *)(origin + offset);
- if (viewed && currcons == fg_console)
- p -= (__real_origin - __origin);
- return p;
- }
-
- /* Note: inverting the screen twice should revert to the original state */
- void invert_screen(int currcons, int offset, int count, int viewed)
- {
- unsigned short *p;
-
- count /= 2;
- p = screenpos(currcons, offset, viewed);
- if (can_do_color)
- while (count--) {
- unsigned short old = scr_readw(p);
- scr_writew(reverse_video_short(old), p);
- p++;
- }
- else
- while (count--) {
- unsigned short old = scr_readw(p);
- scr_writew(old ^ (((old & 0x0700) == 0x0100)
- ? 0x7000 : 0x7700), p);
- p++;
- }
- }
-
- /* used by selection: complement pointer position */
- void complement_pos(int currcons, int offset)
- {
- static unsigned short *p = NULL;
- static unsigned short old = 0;
-
- if (p)
- scr_writew(old, p);
- if (offset == -1)
- p = NULL;
- else {
- p = screenpos(currcons, offset, 1);
- old = scr_readw(p);
- scr_writew(old ^ 0x7700, p);
- }
- }
-
- /* used by selection */
- unsigned short screen_word(int currcons, int offset, int viewed)
- {
- return scr_readw(screenpos(currcons, offset, viewed));
- }
-
- /* used by vcs - note the word offset */
- unsigned short *screen_pos(int currcons, int w_offset, int viewed)
- {
- return screenpos(currcons, 2 * w_offset, viewed);
- }
-
- void getconsxy(int currcons, char *p)
- {
- p[0] = x;
- p[1] = y;
- }
-
- void putconsxy(int currcons, char *p)
- {
- gotoxy(currcons, p[0], p[1]);
- set_cursor(currcons);
- }
-
- static void set_mode(int currcons, int on_off)
- {
- int i;
-
- for (i=0; i<=npar; i++)
- if (ques) switch(par[i]) { /* DEC private modes set/reset */
- case 1: /* Cursor keys send ^[Ox/^[[x */
- if (on_off)
- set_kbd(decckm);
- else
- clr_kbd(decckm);
- break;
- case 3: /* 80/132 mode switch unimplemented */
- deccolm = on_off;
- #if 0
- (void) vc_resize(video_num_lines, deccolm ? 132 : 80);
- /* this alone does not suffice; some user mode
- utility has to change the hardware regs */
- #endif
- break;
- case 5: /* Inverted screen on/off */
- if (decscnm != on_off) {
- decscnm = on_off;
- invert_screen(currcons, 0, video_screen_size, 0);
- update_attr(currcons);
- }
- break;
- case 6: /* Origin relative/absolute */
- decom = on_off;
- gotoxy(currcons,0,0);
- break;
- case 7: /* Autowrap on/off */
- decawm = on_off;
- break;
- case 8: /* Autorepeat on/off */
- if (on_off)
- set_kbd(decarm);
- else
- clr_kbd(decarm);
- break;
- case 9:
- report_mouse = on_off ? 1 : 0;
- break;
- case 25: /* Cursor on/off */
- deccm = on_off;
- set_cursor(currcons);
- break;
- case 1000:
- report_mouse = on_off ? 2 : 0;
- break;
- } else switch(par[i]) { /* ANSI modes set/reset */
- case 3: /* Monitor (display ctrls) */
- disp_ctrl = on_off;
- break;
- case 4: /* Insert Mode on/off */
- decim = on_off;
- break;
- case 20: /* Lf, Enter == CrLf/Lf */
- if (on_off)
- set_kbd(lnm);
- else
- clr_kbd(lnm);
- break;
- }
- }
-
- static void setterm_command(int currcons)
- {
- switch(par[0]) {
- case 1: /* set color for underline mode */
- if (can_do_color && par[1] < 16) {
- ulcolor = color_table[par[1]];
- if (underline)
- update_attr(currcons);
- }
- break;
- case 2: /* set color for half intensity mode */
- if (can_do_color && par[1] < 16) {
- halfcolor = color_table[par[1]];
- if (intensity == 0)
- update_attr(currcons);
- }
- break;
- case 8: /* store colors as defaults */
- def_color = attr;
- default_attr(currcons);
- update_attr(currcons);
- break;
- case 9: /* set blanking interval */
- blankinterval = ((par[1] < 60) ? par[1] : 60) * 60 * HZ;
- poke_blanked_console();
- break;
- }
- }
-
- static void insert_char(int currcons)
- {
- unsigned int i = x;
- unsigned short tmp, old = video_erase_char;
- unsigned short * p = (unsigned short *) pos;
-
- while (i++ < video_num_columns) {
- tmp = scr_readw(p);
- scr_writew(old, p);
- old = tmp;
- p++;
- }
- need_wrap = 0;
- }
-
- static void insert_line(int currcons)
- {
- scrdown(currcons,y,bottom);
- need_wrap = 0;
- }
-
- static void delete_char(int currcons)
- {
- unsigned int i = x;
- unsigned short * p = (unsigned short *) pos;
-
- while (++i < video_num_columns) {
- scr_writew(scr_readw(p+1), p);
- p++;
- }
- scr_writew(video_erase_char, p);
- need_wrap = 0;
- }
-
- static void delete_line(int currcons)
- {
- scrup(currcons,y,bottom);
- need_wrap = 0;
- }
-
- static void csi_at(int currcons, unsigned int nr)
- {
- if (nr > video_num_columns)
- nr = video_num_columns;
- else if (!nr)
- nr = 1;
- while (nr--)
- insert_char(currcons);
- }
-
- static void csi_L(int currcons, unsigned int nr)
- {
- if (nr > video_num_lines)
- nr = video_num_lines;
- else if (!nr)
- nr = 1;
- while (nr--)
- insert_line(currcons);
- }
-
- static void csi_P(int currcons, unsigned int nr)
- {
- if (nr > video_num_columns)
- nr = video_num_columns;
- else if (!nr)
- nr = 1;
- while (nr--)
- delete_char(currcons);
- }
-
- static void csi_M(int currcons, unsigned int nr)
- {
- if (nr > video_num_lines)
- nr = video_num_lines;
- else if (!nr)
- nr=1;
- while (nr--)
- delete_line(currcons);
- }
-
- static void save_cur(int currcons)
- {
- saved_x = x;
- saved_y = y;
- s_intensity = intensity;
- s_underline = underline;
- s_blink = blink;
- s_reverse = reverse;
- s_charset = charset;
- s_color = color;
- saved_G0 = G0_charset;
- saved_G1 = G1_charset;
- }
-
- static void restore_cur(int currcons)
- {
- gotoxy(currcons,saved_x,saved_y);
- intensity = s_intensity;
- underline = s_underline;
- blink = s_blink;
- reverse = s_reverse;
- charset = s_charset;
- color = s_color;
- G0_charset = saved_G0;
- G1_charset = saved_G1;
- translate = set_translate(charset ? G1_charset : G0_charset);
- update_attr(currcons);
- need_wrap = 0;
- }
-
- enum { ESnormal, ESesc, ESsquare, ESgetpars, ESgotpars, ESfunckey,
- EShash, ESsetG0, ESsetG1, ESpercent, ESignore };
-
- static void reset_terminal(int currcons, int do_clear)
- {
- top = 0;
- bottom = video_num_lines;
- vc_state = ESnormal;
- ques = 0;
- translate = set_translate(NORM_MAP);
- G0_charset = NORM_MAP;
- G1_charset = GRAF_MAP;
- charset = 0;
- need_wrap = 0;
- report_mouse = 0;
- utf = 0;
- utf_count = 0;
-
- disp_ctrl = 0;
- toggle_meta = 0;
-
- decscnm = 0;
- decom = 0;
- decawm = 1;
- deccm = 1;
- decim = 0;
-
- set_kbd(decarm);
- clr_kbd(decckm);
- clr_kbd(kbdapplic);
- clr_kbd(lnm);
- kbd_table[currcons].lockstate = 0;
- kbd_table[currcons].ledmode = LED_SHOW_FLAGS;
- kbd_table[currcons].ledflagstate = kbd_table[currcons].default_ledflagstate;
- set_leds();
-
- default_attr(currcons);
- update_attr(currcons);
-
- tab_stop[0] = 0x01010100;
- tab_stop[1] =
- tab_stop[2] =
- tab_stop[3] =
- tab_stop[4] = 0x01010101;
-
- gotoxy(currcons,0,0);
- save_cur(currcons);
- if (do_clear)
- csi_J(currcons,2);
- }
-
- /*
- * Turn the Scroll-Lock LED on when the tty is stopped
- */
- static void con_stop(struct tty_struct *tty)
- {
- int console_num;
- if (!tty)
- return;
- console_num = MINOR(tty->device) - (tty->driver.minor_start);
- if (!vc_cons_allocated(console_num))
- return;
- set_vc_kbd_led(kbd_table + console_num, VC_SCROLLOCK);
- set_leds();
- }
-
- /*
- * Turn the Scroll-Lock LED off when the console is started
- */
- static void con_start(struct tty_struct *tty)
- {
- int console_num;
- if (!tty)
- return;
- console_num = MINOR(tty->device) - (tty->driver.minor_start);
- if (!vc_cons_allocated(console_num))
- return;
- clr_vc_kbd_led(kbd_table + console_num, VC_SCROLLOCK);
- set_leds();
- }
-
- static int con_write(struct tty_struct * tty, int from_user,
- unsigned char *buf, int count)
- {
- int c, tc, ok, n = 0;
- unsigned int currcons;
- struct vt_struct *vt = (struct vt_struct *)tty->driver_data;
-
- currcons = vt->vc_num;
- if (!vc_cons_allocated(currcons)) {
- /* could this happen? */
- static int error = 0;
- if (!error) {
- error = 1;
- printk("con_write: tty %d not allocated\n", currcons+1);
- }
- return 0;
- }
-
- if (currcons == sel_cons)
- clear_selection();
-
- disable_bh(KEYBOARD_BH);
- while (!tty->stopped && count) {
- c = from_user ? get_fs_byte(buf) : *buf;
- buf++; n++; count--;
-
- if (utf) {
- /* Combine UTF-8 into Unicode */
- /* Incomplete characters silently ignored */
- if(c > 0x7f) {
- if (utf_count > 0 && (c & 0xc0) == 0x80) {
- utf_char = (utf_char << 6) | (c & 0x3f);
- utf_count--;
- if (utf_count == 0)
- c = utf_char;
- else continue;
- } else {
- if ((c & 0xe0) == 0xc0) {
- utf_count = 1;
- utf_char = (c & 0x1f);
- } else if ((c & 0xf0) == 0xe0) {
- utf_count = 2;
- utf_char = (c & 0x0f);
- } else
- utf_count = 0;
- continue;
- }
- } else
- utf_count = 0;
-
- /* Now try to find out how to display it */
- tc = conv_uni_to_pc(c);
- if (tc == -1 || tc == -2)
- continue;
- if (tc == -3 || tc == -4) { /* hashtable not valid */
- /* or symbol not found */
- tc = (c <= 0xff) ? translate[c] : 040;
- ok = 0;
- } else
- ok = 1;
- } else { /* no utf */
- tc = translate[toggle_meta ? (c|0x80) : c];
- ok = 0;
- }
-
- /* If the original code was < 32 we only allow a
- * glyph to be displayed if the code is not normally
- * used (such as for cursor movement) or if the
- * disp_ctrl mode has been explicitly enabled.
- * Note: ESC is *never* allowed to be displayed as
- * that would disable all escape sequences!
- */
- if (!ok && tc && (c >= 32 || (disp_ctrl && c != 0x1b)
- || !((CTRL_ACTION >> c) & 1)))
- ok = 1;
-
- if (vc_state == ESnormal && ok) {
- if (need_wrap) {
- cr(currcons);
- lf(currcons);
- }
- if (decim)
- insert_char(currcons);
- scr_writew((attr << 8) + tc, (unsigned short *) pos);
- if (x == video_num_columns - 1)
- need_wrap = decawm;
- else {
- x++;
- pos+=2;
- }
- continue;
- }
-
- /*
- * Control characters can be used in the _middle_
- * of an escape sequence.
- */
- switch (c) {
- case 7:
- kd_mksound(0x637, HZ/8);
- continue;
- case 8:
- bs(currcons);
- continue;
- case 9:
- pos -= (x << 1);
- while (x < video_num_columns - 1) {
- x++;
- if (tab_stop[x >> 5] & (1 << (x & 31)))
- break;
- }
- pos += (x << 1);
- continue;
- case 10: case 11: case 12:
- lf(currcons);
- if (!is_kbd(lnm))
- continue;
- case 13:
- cr(currcons);
- continue;
- case 14:
- charset = 1;
- translate = set_translate(G1_charset);
- disp_ctrl = 1;
- continue;
- case 15:
- charset = 0;
- translate = set_translate(G0_charset);
- disp_ctrl = 0;
- continue;
- case 24: case 26:
- vc_state = ESnormal;
- continue;
- case 27:
- vc_state = ESesc;
- continue;
- case 127:
- del(currcons);
- continue;
- case 128+27:
- vc_state = ESsquare;
- continue;
- }
- switch(vc_state) {
- case ESesc:
- vc_state = ESnormal;
- switch (c) {
- case '[':
- vc_state = ESsquare;
- continue;
- case '%':
- vc_state = ESpercent;
- continue;
- case 'E':
- cr(currcons);
- lf(currcons);
- continue;
- case 'M':
- ri(currcons);
- continue;
- case 'D':
- lf(currcons);
- continue;
- case 'H':
- tab_stop[x >> 5] |= (1 << (x & 31));
- continue;
- case 'Z':
- respond_ID(tty);
- continue;
- case '7':
- save_cur(currcons);
- continue;
- case '8':
- restore_cur(currcons);
- continue;
- case '(':
- vc_state = ESsetG0;
- continue;
- case ')':
- vc_state = ESsetG1;
- continue;
- case '#':
- vc_state = EShash;
- continue;
- case 'c':
- reset_terminal(currcons,1);
- continue;
- case '>': /* Numeric keypad */
- clr_kbd(kbdapplic);
- continue;
- case '=': /* Appl. keypad */
- set_kbd(kbdapplic);
- continue;
- }
- continue;
- case ESsquare:
- for(npar = 0 ; npar < NPAR ; npar++)
- par[npar] = 0;
- npar = 0;
- vc_state = ESgetpars;
- if (c == '[') { /* Function key */
- vc_state=ESfunckey;
- continue;
- }
- ques = (c=='?');
- if (ques)
- continue;
- case ESgetpars:
- if (c==';' && npar<NPAR-1) {
- npar++;
- continue;
- } else if (c>='0' && c<='9') {
- par[npar] *= 10;
- par[npar] += c-'0';
- continue;
- } else vc_state=ESgotpars;
- case ESgotpars:
- vc_state = ESnormal;
- switch(c) {
- case 'h':
- set_mode(currcons,1);
- continue;
- case 'l':
- set_mode(currcons,0);
- continue;
- case 'n':
- if (!ques)
- if (par[0] == 5)
- status_report(tty);
- else if (par[0] == 6)
- cursor_report(currcons,tty);
- continue;
- }
- if (ques) {
- ques = 0;
- continue;
- }
- switch(c) {
- case 'G': case '`':
- if (par[0]) par[0]--;
- gotoxy(currcons,par[0],y);
- continue;
- case 'A':
- if (!par[0]) par[0]++;
- gotoxy(currcons,x,y-par[0]);
- continue;
- case 'B': case 'e':
- if (!par[0]) par[0]++;
- gotoxy(currcons,x,y+par[0]);
- continue;
- case 'C': case 'a':
- if (!par[0]) par[0]++;
- gotoxy(currcons,x+par[0],y);
- continue;
- case 'D':
- if (!par[0]) par[0]++;
- gotoxy(currcons,x-par[0],y);
- continue;
- case 'E':
- if (!par[0]) par[0]++;
- gotoxy(currcons,0,y+par[0]);
- continue;
- case 'F':
- if (!par[0]) par[0]++;
- gotoxy(currcons,0,y-par[0]);
- continue;
- case 'd':
- if (par[0]) par[0]--;
- gotoxy(currcons,x,par[0]);
- continue;
- case 'H': case 'f':
- if (par[0]) par[0]--;
- if (par[1]) par[1]--;
- gotoxy(currcons,par[1],par[0]);
- continue;
- case 'J':
- csi_J(currcons,par[0]);
- continue;
- case 'K':
- csi_K(currcons,par[0]);
- continue;
- case 'L':
- csi_L(currcons,par[0]);
- continue;
- case 'M':
- csi_M(currcons,par[0]);
- continue;
- case 'P':
- csi_P(currcons,par[0]);
- continue;
- case 'c':
- if (!par[0])
- respond_ID(tty);
- continue;
- case 'g':
- if (!par[0])
- tab_stop[x >> 5] &= ~(1 << (x & 31));
- else if (par[0] == 3) {
- tab_stop[0] =
- tab_stop[1] =
- tab_stop[2] =
- tab_stop[3] =
- tab_stop[4] = 0;
- }
- continue;
- case 'm':
- csi_m(currcons);
- continue;
- case 'q': /* DECLL - but only 3 leds */
- /* map 0,1,2,3 to 0,1,2,4 */
- if (par[0] < 4)
- setledstate(kbd_table + currcons,
- (par[0] < 3) ? par[0] : 4);
- continue;
- case 'r':
- if (!par[0])
- par[0]++;
- if (!par[1])
- par[1] = video_num_lines;
- /* Minimum allowed region is 2 lines */
- if (par[0] < par[1] &&
- par[1] <= video_num_lines) {
- top=par[0]-1;
- bottom=par[1];
- gotoxy(currcons,0,0);
- }
- continue;
- case 's':
- save_cur(currcons);
- continue;
- case 'u':
- restore_cur(currcons);
- continue;
- case 'X':
- csi_X(currcons, par[0]);
- continue;
- case '@':
- csi_at(currcons,par[0]);
- continue;
- case ']': /* setterm functions */
- setterm_command(currcons);
- continue;
- }
- continue;
- case ESpercent:
- vc_state = ESnormal;
- switch (c) {
- case '@': /* defined in ISO 2022 */
- utf = 0;
- continue;
- case '8':
- /* ISO/ECMA hasn't yet registered an
- official ESC sequence for UTF-8,
- so this one (ESC %8) will likely
- change in the future. */
- utf = 1;
- continue;
- }
- continue;
- case ESfunckey:
- vc_state = ESnormal;
- continue;
- case EShash:
- vc_state = ESnormal;
- if (c == '8') {
- /* DEC screen alignment test. kludge :-) */
- video_erase_char =
- (video_erase_char & 0xff00) | 'E';
- csi_J(currcons, 2);
- video_erase_char =
- (video_erase_char & 0xff00) | ' ';
- }
- continue;
- case ESsetG0:
- if (c == '0')
- G0_charset = GRAF_MAP;
- else if (c == 'B')
- G0_charset = NORM_MAP;
- else if (c == 'U')
- G0_charset = NULL_MAP;
- else if (c == 'K')
- G0_charset = USER_MAP;
- if (charset == 0)
- translate = set_translate(G0_charset);
- vc_state = ESnormal;
- continue;
- case ESsetG1:
- if (c == '0')
- G1_charset = GRAF_MAP;
- else if (c == 'B')
- G1_charset = NORM_MAP;
- else if (c == 'U')
- G1_charset = NULL_MAP;
- else if (c == 'K')
- G1_charset = USER_MAP;
- if (charset == 1)
- translate = set_translate(G1_charset);
- vc_state = ESnormal;
- continue;
- default:
- vc_state = ESnormal;
- }
- }
- if (vcmode != KD_GRAPHICS)
- set_cursor(currcons);
- enable_bh(KEYBOARD_BH);
- return n;
- }
-
- static int con_write_room(struct tty_struct *tty)
- {
- if (tty->stopped)
- return 0;
- return 4096; /* No limit, really; we're not buffering */
- }
-
- static int con_chars_in_buffer(struct tty_struct *tty)
- {
- return 0; /* we're not buffering */
- }
-
- void poke_blanked_console(void)
- {
- timer_active &= ~(1<<BLANK_TIMER);
- if (vt_cons[fg_console]->vc_mode == KD_GRAPHICS)
- return;
- if (console_blanked) {
- timer_table[BLANK_TIMER].expires = 0;
- timer_active |= 1<<BLANK_TIMER;
- } else if (blankinterval) {
- timer_table[BLANK_TIMER].expires = jiffies + blankinterval;
- timer_active |= 1<<BLANK_TIMER;
- }
- }
-
- void console_print(const char * b)
- {
- int currcons = fg_console;
- unsigned char c;
- static int printing = 0;
-
- if (!printable || printing)
- return; /* console not yet initialized */
- printing = 1;
-
- if (!vc_cons_allocated(currcons)) {
- /* impossible */
- printk("console_print: tty %d not allocated ??\n", currcons+1);
- return;
- }
-
- while ((c = *(b++)) != 0) {
- if (c == 10 || c == 13 || need_wrap) {
- if (c != 13)
- lf(currcons);
- cr(currcons);
- if (c == 10 || c == 13)
- continue;
- }
- scr_writew((attr << 8) + c, (unsigned short *) pos);
- if (x == video_num_columns - 1) {
- need_wrap = 1;
- continue;
- }
- x++;
- pos+=2;
- }
- set_cursor(currcons);
- poke_blanked_console();
- printing = 0;
- }
-
- /*
- * con_throttle and con_unthrottle are only used for
- * paste_selection(), which has to stuff in a large number of
- * characters...
- */
- static void con_throttle(struct tty_struct *tty)
- {
- }
-
- static void con_unthrottle(struct tty_struct *tty)
- {
- struct vt_struct *vt = (struct vt_struct *) tty->driver_data;
-
- wake_up_interruptible(&vt->paste_wait);
- }
-
- static void vc_init(unsigned int currcons, unsigned long rows, unsigned long cols, int do_clear)
- {
- long base = (long) vc_scrbuf[currcons];
-
- video_num_columns = cols;
- video_num_lines = rows;
- video_size_row = cols<<1;
- video_screen_size = video_num_lines * video_size_row;
-
- pos = origin = video_mem_start = base;
- scr_end = base + video_screen_size;
- video_mem_end = base + video_screen_size;
- reset_vc(currcons);
- def_color = 0x07; /* white */
- ulcolor = 0x0f; /* bold white */
- halfcolor = 0x08; /* grey */
- vt_cons[currcons]->paste_wait = 0;
- reset_terminal(currcons, do_clear);
- }
-
- static void con_setsize(unsigned long rows, unsigned long cols)
- {
- video_num_lines = rows;
- video_num_columns = cols;
- video_size_row = 2 * cols;
- video_screen_size = video_num_lines * video_size_row;
- }
-
- /*
- * long con_init(long);
- *
- * This routine initializes console interrupts, and does nothing
- * else. If you want the screen to clear, call tty_write with
- * the appropriate escape-sequence.
- *
- * Reads the information preserved by setup.s to determine the current display
- * type and sets everything accordingly.
- */
- long con_init(long kmem_start)
- {
- char *display_desc = "????";
- int currcons = 0;
- int orig_x = ORIG_X;
- int orig_y = ORIG_Y;
-
- memset(&console_driver, 0, sizeof(struct tty_driver));
- console_driver.magic = TTY_DRIVER_MAGIC;
- console_driver.name = "tty";
- console_driver.name_base = 1;
- console_driver.major = TTY_MAJOR;
- console_driver.minor_start = 1;
- console_driver.num = MAX_NR_CONSOLES;
- console_driver.type = TTY_DRIVER_TYPE_CONSOLE;
- console_driver.init_termios = tty_std_termios;
- console_driver.flags = TTY_DRIVER_REAL_RAW;
- console_driver.refcount = &console_refcount;
- console_driver.table = console_table;
- console_driver.termios = console_termios;
- console_driver.termios_locked = console_termios_locked;
-
- console_driver.open = con_open;
- console_driver.write = con_write;
- console_driver.write_room = con_write_room;
- console_driver.chars_in_buffer = con_chars_in_buffer;
- console_driver.ioctl = vt_ioctl;
- console_driver.stop = con_stop;
- console_driver.start = con_start;
- console_driver.throttle = con_throttle;
- console_driver.unthrottle = con_unthrottle;
-
- if (tty_register_driver(&console_driver))
- panic("Couldn't register console driver\n");
-
- con_setsize(ORIG_VIDEO_LINES, ORIG_VIDEO_COLS);
- video_page = ORIG_VIDEO_PAGE; /* never used */
-
- timer_table[BLANK_TIMER].fn = blank_screen;
- timer_table[BLANK_TIMER].expires = 0;
- if (blankinterval) {
- timer_table[BLANK_TIMER].expires = jiffies+blankinterval;
- timer_active |= 1<<BLANK_TIMER;
- }
-
- if (ORIG_VIDEO_MODE == 7) /* Is this a monochrome display? */
- {
- video_mem_base = 0xb0000;
- video_port_reg = 0x3b4;
- video_port_val = 0x3b5;
- if ((ORIG_VIDEO_EGA_BX & 0xff) != 0x10)
- {
- video_type = VIDEO_TYPE_EGAM;
- video_mem_term = 0xb8000;
- display_desc = "EGA+";
- request_region(0x3b4,2,"ega+");
- }
- else
- {
- video_type = VIDEO_TYPE_MDA;
- video_mem_term = 0xb2000;
- display_desc = "*MDA";
- request_region(0x3b4,2,"mda");
- request_region(0x3b8,1,"mda");
- request_region(0x3bf,1,"mda");
- }
- }
- else /* If not, it is color. */
- {
- can_do_color = 1;
- video_mem_base = 0xb8000;
- video_port_reg = 0x3d4;
- video_port_val = 0x3d5;
- if ((ORIG_VIDEO_EGA_BX & 0xff) != 0x10)
- {
- video_type = VIDEO_TYPE_EGAC;
- video_mem_term = 0xc0000;
- display_desc = "EGA+";
- request_region(0x3d4,2,"ega+");
- }
- else
- {
- video_type = VIDEO_TYPE_CGA;
- video_mem_term = 0xba000;
- display_desc = "*CGA";
- request_region(0x3d4,2,"cga");
- }
- }
-
- /* Initialize the variables used for scrolling (mostly EGA/VGA) */
-
- /* Due to kmalloc roundup allocating statically is more efficient -
- so provide MIN_NR_CONSOLES for people with very little memory */
- for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
- vc_cons[currcons].d = (struct vc_data *) kmem_start;
- kmem_start += sizeof(struct vc_data);
- vt_cons[currcons] = (struct vt_struct *) kmem_start;
- kmem_start += sizeof(struct vt_struct);
- vc_scrbuf[currcons] = (unsigned short *) kmem_start;
- kmem_start += video_screen_size;
- kmalloced = 0;
- screenbuf_size = video_screen_size;
- vc_init(currcons, video_num_lines, video_num_columns, currcons);
- }
-
- currcons = fg_console = 0;
-
- video_mem_start = video_mem_base;
- video_mem_end = video_mem_term;
- origin = video_mem_start;
- scr_end = video_mem_start + video_num_lines * video_size_row;
- gotoxy(currcons,orig_x,orig_y);
- set_origin(currcons);
- csi_J(currcons, 0);
- printable = 1;
- printk("Console: %s %s %ldx%ld, %d virtual console%s (max %d)\n",
- can_do_color ? "colour" : "mono",
- display_desc,
- video_num_columns,video_num_lines,
- MIN_NR_CONSOLES, (MIN_NR_CONSOLES == 1) ? "" : "s", MAX_NR_CONSOLES);
- register_console(console_print);
- return kmem_start;
- }
-
- static void get_scrmem(int currcons)
- {
- memcpyw((unsigned short *)vc_scrbuf[currcons],
- (unsigned short *)origin, video_screen_size);
- origin = video_mem_start = (unsigned long)vc_scrbuf[currcons];
- scr_end = video_mem_end = video_mem_start + video_screen_size;
- pos = origin + y*video_size_row + (x<<1);
- }
-
- static void set_scrmem(int currcons, long offset)
- {
- #ifdef CONFIG_HGA
- /* This works with XFree86 1.2, 1.3 and 2.0
- This code could be extended and made more generally useful if we could
- determine the actual video mode. It appears that this should be
- possible on a genuine Hercules card, but I (WM) haven't been able to
- read from any of the required registers on my clone card.
- */
- /* This code should work with Hercules and MDA cards. */
- if (video_type == VIDEO_TYPE_MDA)
- {
- if (vcmode == KD_TEXT)
- {
- /* Ensure that the card is in text mode. */
- int i;
- static char herc_txt_tbl[12] = {
- 0x61,0x50,0x52,0x0f,0x19,6,0x19,0x19,2,0x0d,0x0b,0x0c };
- outb_p(0, 0x3bf); /* Back to power-on defaults */
- outb_p(0, 0x3b8); /* Blank the screen, select page 0, etc */
- for ( i = 0 ; i < 12 ; i++ )
- {
- outb_p(i, 0x3b4);
- outb_p(herc_txt_tbl[i], 0x3b5);
- }
- }
- #define HGA_BLINKER_ON 0x20
- #define HGA_SCREEN_ON 8
- /* Make sure that the hardware is not blanked */
- outb_p(HGA_BLINKER_ON | HGA_SCREEN_ON, 0x3b8);
- }
- #endif CONFIG_HGA
-
- if (video_mem_term - video_mem_base < offset + video_screen_size)
- offset = 0; /* strange ... */
- memcpyw((unsigned short *)(video_mem_base + offset),
- (unsigned short *) origin, video_screen_size);
- video_mem_start = video_mem_base;
- video_mem_end = video_mem_term;
- origin = video_mem_base + offset;
- scr_end = origin + video_screen_size;
- pos = origin + y*video_size_row + (x<<1);
- }
-
- void do_blank_screen(int nopowersave)
- {
- int currcons;
-
- if (console_blanked)
- return;
-
- timer_active &= ~(1<<BLANK_TIMER);
- timer_table[BLANK_TIMER].fn = unblank_screen;
-
- /* try not to lose information by blanking, and not to waste memory */
- currcons = fg_console;
- has_scrolled = 0;
- blank__origin = __origin;
- blank_origin = origin;
- set_origin(fg_console);
- get_scrmem(fg_console);
- unblank_origin = origin;
- memsetw((void *)blank_origin, BLANK, video_mem_term-blank_origin);
- hide_cursor();
- console_blanked = fg_console + 1;
-
- if(!nopowersave)
- vesa_blank();
- }
-
- void do_unblank_screen(void)
- {
- int currcons;
- int resetorg;
- long offset;
-
- if (!console_blanked)
- return;
- if (!vc_cons_allocated(fg_console)) {
- /* impossible */
- printk("unblank_screen: tty %d not allocated ??\n", fg_console+1);
- return;
- }
- timer_table[BLANK_TIMER].fn = blank_screen;
- if (blankinterval) {
- timer_table[BLANK_TIMER].expires = jiffies + blankinterval;
- timer_active |= 1<<BLANK_TIMER;
- }
-
- currcons = fg_console;
- offset = 0;
- resetorg = 0;
- if (console_blanked == fg_console + 1 && origin == unblank_origin
- && !has_scrolled) {
- /* try to restore the exact situation before blanking */
- resetorg = 1;
- offset = (blank_origin - video_mem_base)
- - (unblank_origin - video_mem_start);
- }
-
- console_blanked = 0;
- set_scrmem(fg_console, offset);
- set_origin(fg_console);
- set_cursor(fg_console);
- if (resetorg)
- __set_origin(blank__origin);
-
- vesa_unblank();
- }
-
- /*
- * If a blank_screen is due to a timer, then a power save is allowed.
- * If it is related to console_switching, then avoid vesa_blank().
- */
- static void blank_screen(void)
- {
- do_blank_screen(0);
- }
-
- static void unblank_screen(void)
- {
- do_unblank_screen();
- }
-
- void update_screen(int new_console)
- {
- static int lock = 0;
-
- if (new_console == fg_console || lock)
- return;
- if (!vc_cons_allocated(new_console)) {
- /* strange ... */
- printk("update_screen: tty %d not allocated ??\n", new_console+1);
- return;
- }
- lock = 1;
-
- clear_selection();
-
- if (!console_blanked)
- get_scrmem(fg_console);
- else
- console_blanked = -1; /* no longer of the form console+1 */
- fg_console = new_console; /* this is the only (nonzero) assignment to fg_console */
- /* consequently, fg_console will always be allocated */
- set_scrmem(fg_console, 0);
- set_origin(fg_console);
- set_cursor(fg_console);
- set_leds();
- compute_shiftstate();
- lock = 0;
- }
-
- /*
- * Allocate the console screen memory.
- */
- int con_open(struct tty_struct *tty, struct file * filp)
- {
- unsigned int idx;
- int i;
-
- idx = MINOR(tty->device) - tty->driver.minor_start;
-
- i = vc_allocate(idx);
- if (i)
- return i;
-
- vt_cons[idx]->vc_num = idx;
- tty->driver_data = vt_cons[idx];
-
- if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
- tty->winsize.ws_row = video_num_lines;
- tty->winsize.ws_col = video_num_columns;
- }
- return 0;
- }
-
-
- /*
- * PIO_FONT support.
- *
- * The font loading code goes back to the codepage package by
- * Joel Hoffman (joel@wam.umd.edu). (He reports that the original
- * reference is: "From: p. 307 of _Programmer's Guide to PC & PS/2
- * Video Systems_ by Richard Wilton. 1987. Microsoft Press".)
- *
- * Change for certain monochrome monitors by Yury Shevchuck
- * (sizif@botik.yaroslavl.su).
- */
-
- #define colourmap ((char *)0xa0000)
- /* Pauline Middelink <middelin@polyware.iaf.nl> reports that we
- should use 0xA0000 for the bwmap as well.. */
- #define blackwmap ((char *)0xa0000)
- #define cmapsz 8192
- #define seq_port_reg (0x3c4)
- #define seq_port_val (0x3c5)
- #define gr_port_reg (0x3ce)
- #define gr_port_val (0x3cf)
-
- static int set_get_font(char * arg, int set)
- {
- #ifdef CAN_LOAD_EGA_FONTS
- int i;
- char *charmap;
- int beg;
-
- /* no use to "load" CGA... */
-
- if (video_type == VIDEO_TYPE_EGAC) {
- charmap = colourmap;
- beg = 0x0e;
- } else if (video_type == VIDEO_TYPE_EGAM) {
- charmap = blackwmap;
- beg = 0x0a;
- } else
- return -EINVAL;
-
- i = verify_area(set ? VERIFY_READ : VERIFY_WRITE, (void *)arg, cmapsz);
- if (i)
- return i;
-
- cli();
- outb_p( 0x00, seq_port_reg ); /* First, the sequencer */
- outb_p( 0x01, seq_port_val ); /* Synchronous reset */
- outb_p( 0x02, seq_port_reg );
- outb_p( 0x04, seq_port_val ); /* CPU writes only to map 2 */
- outb_p( 0x04, seq_port_reg );
- outb_p( 0x07, seq_port_val ); /* Sequential addressing */
- outb_p( 0x00, seq_port_reg );
- outb_p( 0x03, seq_port_val ); /* Clear synchronous reset */
-
- outb_p( 0x04, gr_port_reg ); /* Now, the graphics controller */
- outb_p( 0x02, gr_port_val ); /* select map 2 */
- outb_p( 0x05, gr_port_reg );
- outb_p( 0x00, gr_port_val ); /* disable odd-even addressing */
- outb_p( 0x06, gr_port_reg );
- outb_p( 0x00, gr_port_val ); /* map start at A000:0000 */
- sti();
-
- if (set)
- for (i=0; i<cmapsz ; i++)
- *(charmap+i) = get_fs_byte(arg+i);
- else
- for (i=0; i<cmapsz ; i++)
- put_fs_byte(*(charmap+i), arg+i);
-
- cli();
- outb_p( 0x00, seq_port_reg ); /* First, the sequencer */
- outb_p( 0x01, seq_port_val ); /* Synchronous reset */
- outb_p( 0x02, seq_port_reg );
- outb_p( 0x03, seq_port_val ); /* CPU writes to maps 0 and 1 */
- outb_p( 0x04, seq_port_reg );
- outb_p( 0x03, seq_port_val ); /* odd-even addressing */
- outb_p( 0x00, seq_port_reg );
- outb_p( 0x03, seq_port_val ); /* clear synchronous reset */
-
- outb_p( 0x04, gr_port_reg ); /* Now, the graphics controller */
- outb_p( 0x00, gr_port_val ); /* select map 0 for CPU */
- outb_p( 0x05, gr_port_reg );
- outb_p( 0x10, gr_port_val ); /* enable even-odd addressing */
- outb_p( 0x06, gr_port_reg );
- outb_p( beg, gr_port_val ); /* map starts at b800:0 or b000:0 */
- sti();
-
- return 0;
- #else
- return -EINVAL;
- #endif
- }
-
- /*
- * Load font into the EGA/VGA character generator. arg points to a 8192
- * byte map, 32 bytes per character. Only first H of them are used for
- * 8xH fonts (0 < H <= 32).
- */
-
- int con_set_font (char *arg)
- {
- hashtable_contents_valid = 0;
- return set_get_font (arg,1);
- }
-
- int con_get_font (char *arg)
- {
- return set_get_font (arg,0);
- }
-