d800e06858
were two races: - q_to_b() might unexpectedly return 0 (e.g, after a keyboard signal flushes the output queue and isn't echoed). ansi_put() interprets 0 bytes as 4GB... - more output (e.g. for echoes) might arrive afer q_to_b() returns 0. Then scstart() returns presumably and the new output might not be handled for a long time. Remove unused function scxint(). Fix prototypes (foo() isn't a prototype).
216 lines
7.9 KiB
C
216 lines
7.9 KiB
C
/*-
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* Copyright (c) 1995 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: syscons.h,v 1.9 1995/05/30 08:03:15 rgrimes Exp $
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*/
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#ifndef _I386_ISA_SYSCONS_H_
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#define _I386_ISA_SYSCONS_H_
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/* vm things */
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#define ISMAPPED(pa, width) \
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(((pa) <= (u_long)0x1000 - (width)) \
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|| ((pa) >= 0xa0000 && (pa) <= 0x100000 - (width)))
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#define pa_to_va(pa) (KERNBASE + (pa)) /* works if ISMAPPED(pa...) */
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/* printable chars */
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#define PRINTABLE(ch) ((ch) > 0x1b || ((ch) > 0x0d && (ch) < 0x1b) \
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|| (ch) < 0x07)
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/* macros for "intelligent" screen update */
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#define mark_for_update(scp, x) {\
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if ((x) < scp->start) scp->start = (x);\
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else if ((x) > scp->end) scp->end = (x);\
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}
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#define mark_all(scp) {\
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scp->start = 0;\
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scp->end = scp->xsize * scp->ysize;\
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}
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/* status flags */
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#define LOCK_KEY_MASK 0x0000F
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#define LED_MASK 0x00007
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#define UNKNOWN_MODE 0x00010
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#define KBD_RAW_MODE 0x00020
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#define SWITCH_WAIT_REL 0x00040
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#define SWITCH_WAIT_ACQ 0x00080
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#define BUFFER_SAVED 0x00100
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#define CURSOR_ENABLED 0x00200
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#define CURSOR_SHOWN 0x00400
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#define MOUSE_ENABLED 0x00800
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#define UPDATE_MOUSE 0x01000
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/* configuration flags */
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#define VISUAL_BELL 0x00001
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#define BLINK_CURSOR 0x00002
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#define CHAR_CURSOR 0x00004
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/* video hardware memory addresses */
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#define VIDEOMEM 0x000A0000
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/* misc defines */
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#define FALSE 0
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#define TRUE 1
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#define MAX_ESC_PAR 5
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#define LOAD 1
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#define SAVE 0
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#define COL 80
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#define ROW 25
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#define BELL_DURATION 5
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#define BELL_PITCH 800
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#define TIMER_FREQ 1193182 /* should be in isa.h */
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#define CONSOLE_BUFSIZE 1024
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#define PCBURST 128
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#define FONT_8 0x001
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#define FONT_14 0x002
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#define FONT_16 0x004
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#define HISTORY_SIZE 100*80
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/* defines related to hardware addresses */
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#define MONO_BASE 0x3B4 /* crt controller base mono */
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#define COLOR_BASE 0x3D4 /* crt controller base color */
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#define MISC 0x3C2 /* misc output register */
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#define ATC IO_VGA+0x00 /* attribute controller */
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#define TSIDX IO_VGA+0x04 /* timing sequencer idx */
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#define TSREG IO_VGA+0x05 /* timing sequencer data */
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#define PIXMASK IO_VGA+0x06 /* pixel write mask */
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#define PALRADR IO_VGA+0x07 /* palette read address */
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#define PALWADR IO_VGA+0x08 /* palette write address */
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#define PALDATA IO_VGA+0x09 /* palette data register */
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#define GDCIDX IO_VGA+0x0E /* graph data controller idx */
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#define GDCREG IO_VGA+0x0F /* graph data controller data */
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/* special characters */
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#define cntlc 0x03
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#define cntld 0x04
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#define bs 0x08
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#define lf 0x0a
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#define cr 0x0d
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#define del 0x7f
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#define DEAD_CHAR 0x07 /* char used for cursor */
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typedef struct term_stat {
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int esc; /* processing escape sequence */
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int num_param; /* # of parameters to ESC */
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int last_param; /* last parameter # */
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int param[MAX_ESC_PAR]; /* contains ESC parameters */
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int cur_attr; /* current attributes */
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int std_attr; /* normal attributes */
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int rev_attr; /* reverse attributes */
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} term_stat;
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typedef struct scr_stat {
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u_short *scr_buf; /* buffer when off screen */
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int xpos; /* current X position */
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int ypos; /* current Y position */
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int xsize; /* X size */
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int ysize; /* Y size */
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int start; /* modified area start */
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int end; /* modified area end */
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term_stat term; /* terminal emulation stuff */
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int status; /* status (bitfield) */
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u_short *cursor_pos; /* cursor buffer position */
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u_short cursor_saveunder; /* saved chars under cursor */
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char cursor_start; /* cursor start line # */
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char cursor_end; /* cursor end line # */
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u_short *mouse_pos; /* mouse buffer position */
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u_short *mouse_oldpos; /* mouse old buffer position */
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u_short mouse_saveunder[4]; /* saved chars under mouse */
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short mouse_xpos; /* mouse x coordinate */
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short mouse_ypos; /* mouse y coordinate */
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u_char mouse_cursor[128]; /* mouse cursor bitmap store */
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u_short bell_duration;
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u_short bell_pitch;
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u_char border; /* border color */
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u_char mode; /* mode */
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u_char font; /* font on this screen */
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pid_t pid; /* pid of controlling proc */
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struct proc *proc; /* proc* of controlling proc */
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struct vt_mode smode; /* switch mode */
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u_short *history; /* circular history buffer */
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u_short *history_head; /* current head position */
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u_short *history_pos; /* position shown on screen */
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u_short *history_save; /* save area index */
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int history_size; /* size of history buffer */
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struct apmhook r_hook; /* reconfiguration support */
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} scr_stat;
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typedef struct default_attr {
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int std_attr; /* normal attributes */
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int rev_attr; /* reverse attributes */
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} default_attr;
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/* function prototypes */
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int scprobe(struct isa_device *dev);
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int scattach(struct isa_device *dev);
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int scopen(dev_t dev, int flag, int mode, struct proc *p);
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int scclose(dev_t dev, int flag, int mode, struct proc *p);
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int scread(dev_t dev, struct uio *uio, int flag);
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int scwrite(dev_t dev, struct uio *uio, int flag);
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int scparam(struct tty *tp, struct termios *t);
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int scioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p);
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void scstart(struct tty *tp);
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void scintr(int unit);
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int pcmmap(dev_t dev, int offset, int nprot);
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static void scinit(void);
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static u_int scgetc(int noblock);
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struct tty *scdevtotty(dev_t dev);
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static scr_stat *get_scr_stat(dev_t dev);
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static scr_stat *alloc_scp(void);
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static void init_scp(scr_stat *scp);
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static int get_scr_num(void);
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static void scrn_timer(void);
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static void clear_screen(scr_stat *scp);
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static int switch_scr(scr_stat *scp, u_int next_scr);
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static void exchange_scr(void);
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static inline void move_crsr(scr_stat *scp, int x, int y);
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static void scan_esc(scr_stat *scp, u_char c);
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static inline void draw_cursor(scr_stat *scp, int show);
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static void ansi_put(scr_stat *scp, u_char *buf, int len);
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static u_char *get_fstr(u_int c, u_int *len);
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static void update_leds(int which);
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static void history_to_screen(scr_stat *scp);
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static int history_up_line(scr_stat *scp);
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static int history_down_line(scr_stat *scp);
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static void kbd_wait(void);
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static void kbd_cmd(u_char command);
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static void set_mode(scr_stat *scp);
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void set_border(int color);
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static void set_vgaregs(char *modetable);
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static void set_font_mode(void);
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static void set_normal_mode(void);
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static void copy_font(int operation, int font_type, char* font_image);
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static void set_destructive_cursor(scr_stat *scp, int force);
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static void draw_mouse_image(scr_stat *scp);
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static void save_palette(void);
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void load_palette(void);
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static void do_bell(scr_stat *scp, int pitch, int duration);
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static void blink_screen(scr_stat *scp);
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#endif /* !_I386_ISA_SYSCONS_H_ */
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