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/*-
* Copyright (c) 2009 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Ed Schouten under sponsorship from the
* FreeBSD Foundation.
*
* 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.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _SYS_TERMINAL_H_
#define _SYS_TERMINAL_H_
#include <sys/param.h>
#include <sys/_lock.h>
#include <sys/_mutex.h>
#include <sys/cons.h>
#include <sys/linker_set.h>
#include <sys/ttycom.h>
#include <teken/teken.h>
struct terminal;
struct thread;
struct tty;
/*
* The terminal layer is an abstraction on top of the TTY layer and the
* console interface. It can be used by system console drivers to
* easily interact with the kernel console and TTYs.
*
* Terminals contain terminal emulators, which means console drivers
* don't need to implement their own terminal emulator. The terminal
* emulator deals with UTF-8 exclusively. This means that term_char_t,
* the data type used to store input/output characters will always
* contain Unicode codepoints.
*
* To save memory usage, the top bits of term_char_t will contain other
* attributes, like colors. Right now term_char_t is composed as
* follows:
*
* Bits Meaning
* 0-20: Character value
* 21-25: Bold, underline, blink, reverse, right part of CJK fullwidth character
* 26-28: Foreground color
* 29-31: Background color
*/
typedef uint32_t term_char_t;
#define TCHAR_CHARACTER(c) ((c) & 0x1fffff)
#define TCHAR_FORMAT(c) (((c) >> 21) & 0x1f)
#define TCHAR_FGCOLOR(c) (((c) >> 26) & 0x7)
#define TCHAR_BGCOLOR(c) ((c) >> 29)
typedef teken_color_t term_color_t;
#define TCOLOR_LIGHT(c) ((c) | 0x8)
#define TCOLOR_DARK(c) ((c) & ~0x8)
typedef teken_pos_t term_pos_t;
typedef teken_rect_t term_rect_t;
typedef void tc_cursor_t(struct terminal *tm, const term_pos_t *p);
typedef void tc_putchar_t(struct terminal *tm, const term_pos_t *p,
term_char_t c);
typedef void tc_fill_t(struct terminal *tm, const term_rect_t *r,
term_char_t c);
typedef void tc_copy_t(struct terminal *tm, const term_rect_t *r,
const term_pos_t *p);
typedef void tc_param_t(struct terminal *tm, int cmd, unsigned int arg);
typedef void tc_done_t(struct terminal *tm);
typedef void tc_cnprobe_t(struct terminal *tm, struct consdev *cd);
typedef int tc_cngetc_t(struct terminal *tm);
typedef void tc_opened_t(struct terminal *tm, int opened);
typedef int tc_ioctl_t(struct terminal *tm, u_long cmd, caddr_t data,
struct thread *td);
typedef void tc_bell_t(struct terminal *tm);
struct terminal_class {
/* Terminal emulator. */
tc_cursor_t *tc_cursor;
tc_putchar_t *tc_putchar;
tc_fill_t *tc_fill;
tc_copy_t *tc_copy;
tc_param_t *tc_param;
tc_done_t *tc_done;
/* Low-level console interface. */
tc_cnprobe_t *tc_cnprobe;
tc_cngetc_t *tc_cngetc;
/* Misc. */
tc_opened_t *tc_opened;
tc_ioctl_t *tc_ioctl;
tc_bell_t *tc_bell;
};
struct terminal {
const struct terminal_class *tm_class;
void *tm_softc;
struct mtx tm_mtx;
struct tty *tm_tty;
teken_t tm_emulator;
struct winsize tm_winsize;
unsigned int tm_flags;
#define TF_MUTE 0x1 /* Drop incoming data. */
#define TF_BELL 0x2 /* Bell needs to be sent. */
#define TF_CONS 0x4 /* Console device (needs spinlock). */
struct consdev *consdev;
};
#ifdef _KERNEL
struct terminal *terminal_alloc(const struct terminal_class *tc, void *softc);
void terminal_maketty(struct terminal *tm, const char *fmt, ...);
void terminal_set_winsize_blank(struct terminal *tm,
const struct winsize *size, int blank);
void terminal_set_winsize(struct terminal *tm, const struct winsize *size);
void terminal_mute(struct terminal *tm, int yes);
void terminal_input_char(struct terminal *tm, term_char_t c);
void terminal_input_raw(struct terminal *tm, char c);
void terminal_input_special(struct terminal *tm, unsigned int k);
void termcn_cnregister(struct terminal *tm);
/* Kernel console helper interface. */
extern const struct consdev_ops termcn_cnops;
#define TERMINAL_DECLARE_EARLY(name, class, softc) \
static struct terminal name = { \
.tm_class = &class, \
.tm_softc = softc, \
.tm_flags = TF_CONS, \
}; \
CONSOLE_DEVICE(name ## _consdev, termcn_cnops, &name)
#endif /* _KERNEL */
#endif /* !_SYS_TERMINAL_H_ */
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