vt.h revision 273036
1/*- 2 * Copyright (c) 2009, 2013 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 * Portions of this software were developed by Oleksandr Rybalko 9 * under sponsorship from the FreeBSD Foundation. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: stable/10/sys/dev/vt/vt.h 273036 2014-10-13 13:50:51Z dumbbell $ 33 */ 34 35#ifndef _DEV_VT_VT_H_ 36#define _DEV_VT_VT_H_ 37 38#include <sys/param.h> 39#include <sys/_lock.h> 40#include <sys/_mutex.h> 41#include <sys/callout.h> 42#include <sys/condvar.h> 43#include <sys/conf.h> 44#include <sys/consio.h> 45#include <sys/kbio.h> 46#include <sys/mouse.h> 47#include <sys/terminal.h> 48#include <sys/sysctl.h> 49 50#include "opt_syscons.h" 51#include "opt_splash.h" 52 53#ifndef VT_MAXWINDOWS 54#ifdef MAXCONS 55#define VT_MAXWINDOWS MAXCONS 56#else 57#define VT_MAXWINDOWS 12 58#endif 59#endif 60 61#ifndef VT_ALT_TO_ESC_HACK 62#define VT_ALT_TO_ESC_HACK 1 63#endif 64 65#define VT_CONSWINDOW 0 66 67#if defined(SC_TWOBUTTON_MOUSE) || defined(VT_TWOBUTTON_MOUSE) 68#define VT_MOUSE_PASTEBUTTON MOUSE_BUTTON3DOWN /* right button */ 69#define VT_MOUSE_EXTENDBUTTON MOUSE_BUTTON2DOWN /* not really used */ 70#else 71#define VT_MOUSE_PASTEBUTTON MOUSE_BUTTON2DOWN /* middle button */ 72#define VT_MOUSE_EXTENDBUTTON MOUSE_BUTTON3DOWN /* right button */ 73#endif /* defined(SC_TWOBUTTON_MOUSE) || defined(VT_TWOBUTTON_MOUSE) */ 74 75#define SC_DRIVER_NAME "vt" 76#ifdef VT_DEBUG 77#define DPRINTF(_l, ...) if (vt_debug > (_l)) printf( __VA_ARGS__ ) 78#define VT_CONSOLECTL_DEBUG 79#define VT_SYSMOUSE_DEBUG 80#else 81#define DPRINTF(_l, ...) do {} while (0) 82#endif 83#define ISSIGVALID(sig) ((sig) > 0 && (sig) < NSIG) 84 85#define VT_SYSCTL_INT(_name, _default, _descr) \ 86static int vt_##_name = _default; \ 87SYSCTL_INT(_kern_vt, OID_AUTO, _name, CTLFLAG_RW, &vt_##_name, _default,\ 88 _descr); \ 89TUNABLE_INT("kern.vt." #_name, &vt_##_name); 90 91struct vt_driver; 92 93void vt_allocate(struct vt_driver *, void *); 94void vt_resume(void); 95void vt_suspend(void); 96 97typedef unsigned int vt_axis_t; 98 99/* 100 * List of locks 101 * (d) locked by vd_lock 102 * (b) locked by vb_lock 103 * (G) locked by Giant 104 * (u) unlocked, locked by higher levels 105 * (c) const until freeing 106 * (?) yet to be determined 107 */ 108 109/* 110 * Per-device datastructure. 111 */ 112 113#ifndef SC_NO_CUTPASTE 114struct vt_mouse_cursor; 115#endif 116 117struct vt_pastebuf { 118 term_char_t *vpb_buf; /* Copy-paste buffer. */ 119 unsigned int vpb_bufsz; /* Buffer size. */ 120 unsigned int vpb_len; /* Length of a last selection. */ 121}; 122 123struct vt_device { 124 struct vt_window *vd_windows[VT_MAXWINDOWS]; /* (c) Windows. */ 125 struct vt_window *vd_curwindow; /* (d) Current window. */ 126 struct vt_window *vd_savedwindow;/* (?) Saved for suspend. */ 127 struct vt_pastebuf vd_pastebuf; /* (?) Copy/paste buf. */ 128 const struct vt_driver *vd_driver; /* (c) Graphics driver. */ 129 void *vd_softc; /* (u) Driver data. */ 130#ifndef SC_NO_CUTPASTE 131 struct vt_mouse_cursor *vd_mcursor; /* (?) Cursor bitmap. */ 132 term_color_t vd_mcursor_fg; /* (?) Cursor fg color. */ 133 term_color_t vd_mcursor_bg; /* (?) Cursor bg color. */ 134 vt_axis_t vd_mx_drawn; /* (?) Mouse X and Y */ 135 vt_axis_t vd_my_drawn; /* as of last redraw. */ 136 int vd_mshown; /* (?) Mouse shown during */ 137#endif /* last redrawn. */ 138 uint16_t vd_mx; /* (?) Current mouse X. */ 139 uint16_t vd_my; /* (?) current mouse Y. */ 140 uint32_t vd_mstate; /* (?) Mouse state. */ 141 vt_axis_t vd_width; /* (?) Screen width. */ 142 vt_axis_t vd_height; /* (?) Screen height. */ 143 struct mtx vd_lock; /* Per-device lock. */ 144 struct cv vd_winswitch; /* (d) Window switch notify. */ 145 struct callout vd_timer; /* (d) Display timer. */ 146 volatile unsigned int vd_timer_armed;/* (?) Display timer started.*/ 147 int vd_flags; /* (d) Device flags. */ 148#define VDF_TEXTMODE 0x01 /* Do text mode rendering. */ 149#define VDF_SPLASH 0x02 /* Splash screen active. */ 150#define VDF_ASYNC 0x04 /* vt_timer() running. */ 151#define VDF_INVALID 0x08 /* Entire screen should be re-rendered. */ 152#define VDF_DEAD 0x10 /* Early probing found nothing. */ 153#define VDF_INITIALIZED 0x20 /* vtterm_cnprobe already done. */ 154#define VDF_MOUSECURSOR 0x40 /* Mouse cursor visible. */ 155#define VDF_QUIET_BELL 0x80 /* Disable bell. */ 156 int vd_keyboard; /* (G) Keyboard index. */ 157 unsigned int vd_kbstate; /* (?) Device unit. */ 158 unsigned int vd_unit; /* (c) Device unit. */ 159}; 160 161#define VD_PASTEBUF(vd) ((vd)->vd_pastebuf.vpb_buf) 162#define VD_PASTEBUFSZ(vd) ((vd)->vd_pastebuf.vpb_bufsz) 163#define VD_PASTEBUFLEN(vd) ((vd)->vd_pastebuf.vpb_len) 164 165/* 166 * Per-window terminal screen buffer. 167 * 168 * Because redrawing is performed asynchronously, the buffer keeps track 169 * of a rectangle that needs to be redrawn (vb_dirtyrect). Because this 170 * approach seemed to cause suboptimal performance (when the top left 171 * and the bottom right of the screen are modified), it also uses a set 172 * of bitmasks to keep track of the rows and columns (mod 64) that have 173 * been modified. 174 */ 175 176struct vt_buf { 177 struct mtx vb_lock; /* Buffer lock. */ 178 term_pos_t vb_scr_size; /* (b) Screen dimensions. */ 179 int vb_flags; /* (b) Flags. */ 180#define VBF_CURSOR 0x1 /* Cursor visible. */ 181#define VBF_STATIC 0x2 /* Buffer is statically allocated. */ 182#define VBF_MTX_INIT 0x4 /* Mutex initialized. */ 183#define VBF_SCROLL 0x8 /* scroll locked mode. */ 184#define VBF_HISTORY_FULL 0x10 /* All rows filled. */ 185 unsigned int vb_history_size; 186#define VBF_DEFAULT_HISTORY_SIZE 500 187 int vb_roffset; /* (b) History rows offset. */ 188 int vb_curroffset; /* (b) Saved rows offset. */ 189 term_pos_t vb_cursor; /* (u) Cursor position. */ 190 term_pos_t vb_mark_start; /* (b) Copy region start. */ 191 term_pos_t vb_mark_end; /* (b) Copy region end. */ 192 int vb_mark_last; /* Last mouse event. */ 193 term_rect_t vb_dirtyrect; /* (b) Dirty rectangle. */ 194 term_char_t *vb_buffer; /* (u) Data buffer. */ 195 term_char_t **vb_rows; /* (u) Array of rows */ 196}; 197 198void vtbuf_copy(struct vt_buf *, const term_rect_t *, const term_pos_t *); 199void vtbuf_fill_locked(struct vt_buf *, const term_rect_t *, term_char_t); 200void vtbuf_init_early(struct vt_buf *); 201void vtbuf_init(struct vt_buf *, const term_pos_t *); 202void vtbuf_grow(struct vt_buf *, const term_pos_t *, unsigned int); 203void vtbuf_putchar(struct vt_buf *, const term_pos_t *, term_char_t); 204void vtbuf_cursor_position(struct vt_buf *, const term_pos_t *); 205void vtbuf_scroll_mode(struct vt_buf *vb, int yes); 206void vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area); 207void vtbuf_undirty(struct vt_buf *, term_rect_t *); 208void vtbuf_sethistory_size(struct vt_buf *, int); 209int vtbuf_iscursor(const struct vt_buf *vb, int row, int col); 210void vtbuf_cursor_visibility(struct vt_buf *, int); 211#ifndef SC_NO_CUTPASTE 212int vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row); 213int vtbuf_get_marked_len(struct vt_buf *vb); 214void vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz); 215#endif 216 217#define VTB_MARK_NONE 0 218#define VTB_MARK_END 1 219#define VTB_MARK_START 2 220#define VTB_MARK_WORD 3 221#define VTB_MARK_ROW 4 222#define VTB_MARK_EXTEND 5 223#define VTB_MARK_MOVE 6 224 225#define VTBUF_SLCK_ENABLE(vb) vtbuf_scroll_mode((vb), 1) 226#define VTBUF_SLCK_DISABLE(vb) vtbuf_scroll_mode((vb), 0) 227 228#define VTBUF_MAX_HEIGHT(vb) \ 229 ((vb)->vb_history_size) 230#define VTBUF_GET_ROW(vb, r) \ 231 ((vb)->vb_rows[((vb)->vb_roffset + (r)) % VTBUF_MAX_HEIGHT(vb)]) 232#define VTBUF_GET_FIELD(vb, r, c) \ 233 ((vb)->vb_rows[((vb)->vb_roffset + (r)) % VTBUF_MAX_HEIGHT(vb)][(c)]) 234#define VTBUF_FIELD(vb, r, c) \ 235 ((vb)->vb_rows[((vb)->vb_curroffset + (r)) % VTBUF_MAX_HEIGHT(vb)][(c)]) 236#define VTBUF_ISCURSOR(vb, r, c) \ 237 vtbuf_iscursor((vb), (r), (c)) 238#define VTBUF_DIRTYROW(mask, row) \ 239 ((mask)->vbm_row & ((uint64_t)1 << ((row) % 64))) 240#define VTBUF_DIRTYCOL(mask, col) \ 241 ((mask)->vbm_col & ((uint64_t)1 << ((col) % 64))) 242#define VTBUF_SPACE_CHAR(attr) (' ' | (attr)) 243 244#define VHS_SET 0 245#define VHS_CUR 1 246#define VHS_END 2 247int vthistory_seek(struct vt_buf *, int offset, int whence); 248void vthistory_addlines(struct vt_buf *vb, int offset); 249void vthistory_getpos(const struct vt_buf *, unsigned int *offset); 250 251/* 252 * Per-window datastructure. 253 */ 254 255struct vt_window { 256 struct vt_device *vw_device; /* (c) Device. */ 257 struct terminal *vw_terminal; /* (c) Terminal. */ 258 struct vt_buf vw_buf; /* (u) Screen buffer. */ 259 struct vt_font *vw_font; /* (d) Graphical font. */ 260 term_rect_t vw_draw_area; /* (?) Drawable area. */ 261 unsigned int vw_number; /* (c) Window number. */ 262 int vw_kbdmode; /* (?) Keyboard mode. */ 263 int vw_prev_kbdmode;/* (?) Previous mode. */ 264 int vw_kbdstate; /* (?) Keyboard state. */ 265 int vw_grabbed; /* (?) Grab count. */ 266 char *vw_kbdsq; /* Escape sequence queue*/ 267 unsigned int vw_flags; /* (d) Per-window flags. */ 268 int vw_mouse_level;/* Mouse op mode. */ 269#define VWF_BUSY 0x1 /* Busy reconfiguring device. */ 270#define VWF_OPENED 0x2 /* TTY in use. */ 271#define VWF_SCROLL 0x4 /* Keys influence scrollback. */ 272#define VWF_CONSOLE 0x8 /* Kernel message console window. */ 273#define VWF_VTYLOCK 0x10 /* Prevent window switch. */ 274#define VWF_MOUSE_HIDE 0x20 /* Disable mouse events processing. */ 275#define VWF_READY 0x40 /* Window fully initialized. */ 276#define VWF_GRAPHICS 0x80 /* Window in graphics mode (KDSETMODE). */ 277#define VWF_SWWAIT_REL 0x10000 /* Program wait for VT acquire is done. */ 278#define VWF_SWWAIT_ACQ 0x20000 /* Program wait for VT release is done. */ 279 pid_t vw_pid; /* Terminal holding process */ 280 struct proc *vw_proc; 281 struct vt_mode vw_smode; /* switch mode */ 282 struct callout vw_proc_dead_timer; 283 struct vt_window *vw_switch_to; 284}; 285 286#define VT_AUTO 0 /* switching is automatic */ 287#define VT_PROCESS 1 /* switching controlled by prog */ 288#define VT_KERNEL 255 /* switching controlled in kernel */ 289 290#define IS_VT_PROC_MODE(vw) ((vw)->vw_smode.mode == VT_PROCESS) 291 292/* 293 * Per-device driver routines. 294 */ 295 296typedef int vd_init_t(struct vt_device *vd); 297typedef int vd_probe_t(struct vt_device *vd); 298typedef void vd_postswitch_t(struct vt_device *vd); 299typedef void vd_blank_t(struct vt_device *vd, term_color_t color); 300typedef void vd_bitblt_text_t(struct vt_device *vd, const struct vt_window *vw, 301 const term_rect_t *area); 302typedef void vd_bitblt_bmp_t(struct vt_device *vd, const struct vt_window *vw, 303 const uint8_t *pattern, const uint8_t *mask, 304 unsigned int width, unsigned int height, 305 unsigned int x, unsigned int y, term_color_t fg, term_color_t bg); 306typedef int vd_fb_ioctl_t(struct vt_device *, u_long, caddr_t, struct thread *); 307typedef int vd_fb_mmap_t(struct vt_device *, vm_ooffset_t, vm_paddr_t *, int, 308 vm_memattr_t *); 309typedef void vd_drawrect_t(struct vt_device *, int, int, int, int, int, 310 term_color_t); 311typedef void vd_setpixel_t(struct vt_device *, int, int, term_color_t); 312 313struct vt_driver { 314 char vd_name[16]; 315 /* Console attachment. */ 316 vd_probe_t *vd_probe; 317 vd_init_t *vd_init; 318 319 /* Drawing. */ 320 vd_blank_t *vd_blank; 321 vd_drawrect_t *vd_drawrect; 322 vd_setpixel_t *vd_setpixel; 323 vd_bitblt_text_t *vd_bitblt_text; 324 vd_bitblt_bmp_t *vd_bitblt_bmp; 325 326 /* Framebuffer ioctls, if present. */ 327 vd_fb_ioctl_t *vd_fb_ioctl; 328 329 /* Framebuffer mmap, if present. */ 330 vd_fb_mmap_t *vd_fb_mmap; 331 332 /* Update display setting on vt switch. */ 333 vd_postswitch_t *vd_postswitch; 334 335 /* Priority to know which one can override */ 336 int vd_priority; 337#define VD_PRIORITY_DUMB 10 338#define VD_PRIORITY_GENERIC 100 339#define VD_PRIORITY_SPECIFIC 1000 340}; 341 342/* 343 * Console device madness. 344 * 345 * Utility macro to make early vt(4) instances work. 346 */ 347 348extern const struct terminal_class vt_termclass; 349void vt_upgrade(struct vt_device *vd); 350 351#define PIXEL_WIDTH(w) ((w) / 8) 352#define PIXEL_HEIGHT(h) ((h) / 16) 353 354#ifndef VT_FB_DEFAULT_WIDTH 355#define VT_FB_DEFAULT_WIDTH 2048 356#endif 357#ifndef VT_FB_DEFAULT_HEIGHT 358#define VT_FB_DEFAULT_HEIGHT 1200 359#endif 360 361/* name argument is not used yet. */ 362#define VT_DRIVER_DECLARE(name, drv) DATA_SET(vt_drv_set, drv) 363 364/* 365 * Fonts. 366 * 367 * Remapping tables are used to map Unicode points to glyphs. They need 368 * to be sorted, because vtfont_lookup() performs a binary search. Each 369 * font has two remapping tables, for normal and bold. When a character 370 * is not present in bold, it uses a normal glyph. When no glyph is 371 * available, it uses glyph 0, which is normally equal to U+FFFD. 372 */ 373 374struct vt_font_map { 375 uint32_t vfm_src; 376 uint16_t vfm_dst; 377 uint16_t vfm_len; 378}; 379 380struct vt_font { 381 struct vt_font_map *vf_map[VFNT_MAPS]; 382 uint8_t *vf_bytes; 383 unsigned int vf_height, vf_width; 384 unsigned int vf_map_count[VFNT_MAPS]; 385 unsigned int vf_refcount; 386}; 387 388#ifndef SC_NO_CUTPASTE 389struct vt_mouse_cursor { 390 uint8_t map[64 * 64 / 8]; 391 uint8_t mask[64 * 64 / 8]; 392 uint8_t width; 393 uint8_t height; 394}; 395#endif 396 397const uint8_t *vtfont_lookup(const struct vt_font *vf, term_char_t c); 398struct vt_font *vtfont_ref(struct vt_font *vf); 399void vtfont_unref(struct vt_font *vf); 400int vtfont_load(vfnt_t *f, struct vt_font **ret); 401 402/* Sysmouse. */ 403void sysmouse_process_event(mouse_info_t *mi); 404#ifndef SC_NO_CUTPASTE 405void vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel); 406void vt_mouse_state(int show); 407#endif 408#define VT_MOUSE_SHOW 1 409#define VT_MOUSE_HIDE 0 410 411/* Utilities. */ 412void vt_determine_colors(term_char_t c, int cursor, 413 term_color_t *fg, term_color_t *bg); 414int vt_is_cursor_in_area(const struct vt_device *vd, 415 const term_rect_t *area); 416 417#endif /* !_DEV_VT_VT_H_ */ 418 419