terminal.h revision 259016
1/*- 2 * Copyright (c) 2009 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Ed Schouten under sponsorship from the 6 * FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: head/sys/sys/terminal.h 259016 2013-12-05 22:38:53Z ray $ 30 */ 31 32#ifndef _SYS_TERMINAL_H_ 33#define _SYS_TERMINAL_H_ 34 35#include <sys/param.h> 36#include <sys/_lock.h> 37#include <sys/_mutex.h> 38#include <sys/cons.h> 39#include <sys/linker_set.h> 40#include <sys/ttycom.h> 41 42#include <teken/teken.h> 43 44struct terminal; 45struct thread; 46struct tty; 47 48/* 49 * The terminal layer is an abstraction on top of the TTY layer and the 50 * console interface. It can be used by system console drivers to 51 * easily interact with the kernel console and TTYs. 52 * 53 * Terminals contain terminal emulators, which means console drivers 54 * don't need to implement their own terminal emulator. The terminal 55 * emulator deals with UTF-8 exclusively. This means that term_char_t, 56 * the data type used to store input/output characters will always 57 * contain Unicode codepoints. 58 * 59 * To save memory usage, the top bits of term_char_t will contain other 60 * attributes, like colors. Right now term_char_t is composed as 61 * follows: 62 * 63 * Bits Meaning 64 * 0-20: Character value 65 * 21: Unused 66 * 22-25: Bold, underline, blink, reverse 67 * 26-28: Foreground color 68 * 29-31: Background color 69 */ 70 71typedef uint32_t term_char_t; 72#define TCHAR_CHARACTER(c) ((c) & 0x1fffff) 73#define TCHAR_FORMAT(c) (((c) >> 22) & 0xf) 74#define TCHAR_FGCOLOR(c) (((c) >> 26) & 0x7) 75#define TCHAR_BGCOLOR(c) ((c) >> 29) 76 77typedef teken_color_t term_color_t; 78#define TCOLOR_LIGHT(c) ((c) | 0x8) 79#define TCOLOR_DARK(c) ((c) & ~0x8) 80typedef teken_pos_t term_pos_t; 81typedef teken_rect_t term_rect_t; 82 83typedef void tc_cursor_t(struct terminal *tm, const term_pos_t *p); 84typedef void tc_putchar_t(struct terminal *tm, const term_pos_t *p, 85 term_char_t c); 86typedef void tc_fill_t(struct terminal *tm, const term_rect_t *r, 87 term_char_t c); 88typedef void tc_copy_t(struct terminal *tm, const term_rect_t *r, 89 const term_pos_t *p); 90typedef void tc_param_t(struct terminal *tm, int cmd, unsigned int arg); 91typedef void tc_done_t(struct terminal *tm); 92 93typedef void tc_cnprobe_t(struct terminal *tm, struct consdev *cd); 94typedef int tc_cngetc_t(struct terminal *tm); 95 96typedef void tc_opened_t(struct terminal *tm, int opened); 97typedef int tc_ioctl_t(struct terminal *tm, u_long cmd, caddr_t data, 98 struct thread *td); 99typedef void tc_bell_t(struct terminal *tm); 100 101struct terminal_class { 102 /* Terminal emulator. */ 103 tc_cursor_t *tc_cursor; 104 tc_putchar_t *tc_putchar; 105 tc_fill_t *tc_fill; 106 tc_copy_t *tc_copy; 107 tc_param_t *tc_param; 108 tc_done_t *tc_done; 109 110 /* Low-level console interface. */ 111 tc_cnprobe_t *tc_cnprobe; 112 tc_cngetc_t *tc_cngetc; 113 114 /* Misc. */ 115 tc_opened_t *tc_opened; 116 tc_ioctl_t *tc_ioctl; 117 tc_bell_t *tc_bell; 118}; 119 120struct terminal { 121 const struct terminal_class *tm_class; 122 void *tm_softc; 123 struct mtx tm_mtx; 124 struct tty *tm_tty; 125 teken_t tm_emulator; 126 struct winsize tm_winsize; 127 unsigned int tm_flags; 128#define TF_MUTE 0x1 /* Drop incoming data. */ 129#define TF_BELL 0x2 /* Bell needs to be sent. */ 130#define TF_CONS 0x4 /* Console device (needs spinlock). */ 131 struct consdev *consdev; 132}; 133 134#ifdef _KERNEL 135 136struct terminal *terminal_alloc(const struct terminal_class *tc, void *softc); 137void terminal_maketty(struct terminal *tm, const char *fmt, ...); 138void terminal_set_winsize_blank(struct terminal *tm, 139 const struct winsize *size, int blank); 140void terminal_set_winsize(struct terminal *tm, const struct winsize *size); 141void terminal_mute(struct terminal *tm, int yes); 142void terminal_input_char(struct terminal *tm, term_char_t c); 143void terminal_input_raw(struct terminal *tm, char c); 144void terminal_input_special(struct terminal *tm, unsigned int k); 145 146void termcn_cnregister(struct terminal *tm); 147 148/* Kernel console helper interface. */ 149extern const struct consdev_ops termcn_cnops; 150 151#define TERMINAL_DECLARE_EARLY(name, class, softc) \ 152 static struct terminal name = { \ 153 .tm_class = &class, \ 154 .tm_softc = softc, \ 155 .tm_flags = TF_CONS, \ 156 }; \ 157 CONSOLE_DEVICE(name ## _consdev, termcn_cnops, &name) 158 159#endif /* _KERNEL */ 160 161#endif /* !_SYS_TERMINAL_H_ */ 162