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/*-
* Copyright (c) 1995 Søren Schmidt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*/
/* vm things */
#define ISMAPPED(pa, width) \
(((pa) <= (u_long)0x1000 - (width)) \
|| ((pa) >= 0xa0000 && (pa) <= 0x100000 - (width)))
#define pa_to_va(pa) (KERNBASE + (pa)) /* works if ISMAPPED(pa...) */
/* printable chars */
#define PRINTABLE(ch) (ch>0x1B || (ch>0x0d && ch<0x1b) || ch<0x07)
/* status flags */
#define LOCK_KEY_MASK 0x0000F
#define LED_MASK 0x00007
#define UNKNOWN_MODE 0x00010
#define KBD_RAW_MODE 0x00020
#define SWITCH_WAIT_REL 0x00040
#define SWITCH_WAIT_ACQ 0x00080
#define BUFFER_SAVED 0x00100
#define CURSOR_ENABLED 0x00200
#define CURSOR_SHOWN 0x00400
#define MOUSE_ENABLED 0x00800
#define UPDATE_MOUSE 0x01000
#define UPDATE_SCREEN 0x02000
/* configuration flags */
#define VISUAL_BELL 0x00001
#define BLINK_CURSOR 0x00002
#define CHAR_CURSOR 0x00004
/* video hardware memory addresses */
#define VIDEOMEM 0x000A0000
/* misc defines */
#define FALSE 0
#define TRUE 1
#define MAX_ESC_PAR 5
#define LOAD 1
#define SAVE 0
#define COL 80
#define ROW 25
#define BELL_DURATION 5
#define BELL_PITCH 800
#define TIMER_FREQ 1193182 /* should be in isa.h */
#define CONSOLE_BUFSIZE 1024
#define PCBURST 128
#define FONT_8 0x001
#define FONT_14 0x002
#define FONT_16 0x004
#define HISTORY_SIZE 100*80
/* defines related to hardware addresses */
#define MONO_BASE 0x3B4 /* crt controller base mono */
#define COLOR_BASE 0x3D4 /* crt controller base color */
#define MISC 0x3C2 /* misc output register */
#define ATC IO_VGA+0x00 /* attribute controller */
#define TSIDX IO_VGA+0x04 /* timing sequencer idx */
#define TSREG IO_VGA+0x05 /* timing sequencer data */
#define PIXMASK IO_VGA+0x06 /* pixel write mask */
#define PALRADR IO_VGA+0x07 /* palette read address */
#define PALWADR IO_VGA+0x08 /* palette write address */
#define PALDATA IO_VGA+0x09 /* palette data register */
#define GDCIDX IO_VGA+0x0E /* graph data controller idx */
#define GDCREG IO_VGA+0x0F /* graph data controller data */
/* special characters */
#define cntlc 0x03
#define cntld 0x04
#define bs 0x08
#define lf 0x0a
#define cr 0x0d
#define del 0x7f
typedef struct term_stat {
int esc; /* processing escape sequence */
int num_param; /* # of parameters to ESC */
int last_param; /* last parameter # */
int param[MAX_ESC_PAR]; /* contains ESC parameters */
int cur_attr; /* current attributes */
int std_attr; /* normal attributes */
int rev_attr; /* reverse attributes */
} term_stat;
typedef struct scr_stat {
u_short *scr_buf; /* buffer when off screen */
int xpos; /* current X position */
int ypos; /* current Y position */
int xsize; /* X size */
int ysize; /* Y size */
term_stat term; /* terminal emulation stuff */
int status; /* status (bitfield) */
u_short *cursor_pos; /* cursor buffer position */
u_short cursor_saveunder; /* saved chars under cursor */
char cursor_start; /* cursor start line # */
char cursor_end; /* cursor end line # */
u_short *mouse_pos; /* mouse buffer position */
u_short *mouse_oldpos; /* mouse old buffer position */
u_short mouse_saveunder[4]; /* saved chars under mouse */
short mouse_xpos; /* mouse x coordinate */
short mouse_ypos; /* mouse y coordinate */
u_char mouse_cursor[128]; /* mouse cursor bitmap store */
u_short bell_duration;
u_short bell_pitch;
u_char border; /* border color */
u_char mode; /* mode */
u_char font; /* font on this screen */
pid_t pid; /* pid of controlling proc */
struct proc *proc; /* proc* of controlling proc */
struct vt_mode smode; /* switch mode */
u_short *history; /* circular history buffer */
u_short *history_head; /* current head position */
u_short *history_pos; /* position shown on screen */
u_short *history_save; /* save area index */
int history_size; /* size of history buffer */
#if NAPM > 0
struct apmhook r_hook; /* reconfiguration support */
#endif
} scr_stat;
typedef struct default_attr {
int std_attr; /* normal attributes */
int rev_attr; /* reverse attributes */
} default_attr;
/* function prototypes */
int scprobe(struct isa_device *dev);
int scattach(struct isa_device *dev);
int scopen(dev_t dev, int flag, int mode, struct proc *p);
int scclose(dev_t dev, int flag, int mode, struct proc *p);
int scread(dev_t dev, struct uio *uio, int flag);
int scwrite(dev_t dev, struct uio *uio, int flag);
int scparam(struct tty *tp, struct termios *t);
int scioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p);
void scxint(dev_t dev);
void scstart(struct tty *tp);
void pccnprobe(struct consdev *cp);
void pccninit(struct consdev *cp);
void pccnputc(dev_t dev, char c);
int pccngetc(dev_t dev);
int pccncheckc(dev_t dev);
void scintr(int unit);
int pcmmap(dev_t dev, int offset, int nprot);
static void scinit(void);
static u_int scgetc(int noblock);
static struct tty *get_tty_ptr(dev_t dev);
static scr_stat *get_scr_stat(dev_t dev);
static scr_stat *alloc_scp();
static void init_scp(scr_stat *scp);
static int get_scr_num();
static void scrn_timer();
static void clear_screen(scr_stat *scp);
static int switch_scr(scr_stat *scp, u_int next_scr);
static void exchange_scr(void);
static inline void move_crsr(scr_stat *scp, int x, int y);
static void scan_esc(scr_stat *scp, u_char c);
static inline void draw_cursor(scr_stat *scp, int show);
static void ansi_put(scr_stat *scp, u_char *buf, int len);
static u_char *get_fstr(u_int c, u_int *len);
static void update_leds(int which);
static void history_to_screen(scr_stat *scp);
static int history_up_line(scr_stat *scp);
static int history_down_line(scr_stat *scp);
static void kbd_wait(void);
static void kbd_cmd(u_char command);
static void set_mode(scr_stat *scp);
void set_border(int color);
static void set_vgaregs(char *modetable);
static void set_font_mode();
static void set_normal_mode();
static void copy_font(int operation, int font_type, char* font_image);
static void draw_mouse_image(scr_stat *scp);
static void save_palette(void);
void load_palette(void);
static void do_bell(scr_stat *scp, int pitch, int duration);
static void blink_screen(scr_stat *scp);
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