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freebsd-skq/sys/dev/vt/vt.h
emaste 493bc990c2 Implement "vidcontrol -h <history_size>" for vt(4) 
PR:		210415
Submitted by:	Siva Mahadevan
Reviewed by:	ray (earlier)
MFC after:	1 month
Relnotes:	yes
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D11814
2017-12-05 22:19:59 +00:00

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16 KiB
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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2009, 2013 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Ed Schouten under sponsorship from the
* FreeBSD Foundation.
*
* Portions of this software were developed by Oleksandr Rybalko
* 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 _DEV_VT_VT_H_
#define _DEV_VT_VT_H_
#include <sys/param.h>
#include <sys/_lock.h>
#include <sys/_mutex.h>
#include <sys/callout.h>
#include <sys/condvar.h>
#include <sys/conf.h>
#include <sys/consio.h>
#include <sys/kbio.h>
#include <sys/mouse.h>
#include <sys/terminal.h>
#include <sys/sysctl.h>
#include "opt_syscons.h"
#include "opt_splash.h"
#ifndef VT_MAXWINDOWS
#ifdef MAXCONS
#define VT_MAXWINDOWS MAXCONS
#else
#define VT_MAXWINDOWS 12
#endif
#endif
#ifndef VT_ALT_TO_ESC_HACK
#define VT_ALT_TO_ESC_HACK 1
#endif
#define VT_CONSWINDOW 0
#if defined(SC_TWOBUTTON_MOUSE) || defined(VT_TWOBUTTON_MOUSE)
#define VT_MOUSE_PASTEBUTTON MOUSE_BUTTON3DOWN /* right button */
#define VT_MOUSE_EXTENDBUTTON MOUSE_BUTTON2DOWN /* not really used */
#else
#define VT_MOUSE_PASTEBUTTON MOUSE_BUTTON2DOWN /* middle button */
#define VT_MOUSE_EXTENDBUTTON MOUSE_BUTTON3DOWN /* right button */
#endif /* defined(SC_TWOBUTTON_MOUSE) || defined(VT_TWOBUTTON_MOUSE) */
#define SC_DRIVER_NAME "vt"
#ifdef VT_DEBUG
#define DPRINTF(_l, ...) if (vt_debug > (_l)) printf( __VA_ARGS__ )
#define VT_CONSOLECTL_DEBUG
#define VT_SYSMOUSE_DEBUG
#else
#define DPRINTF(_l, ...) do {} while (0)
#endif
#define ISSIGVALID(sig) ((sig) > 0 && (sig) < NSIG)
#define VT_SYSCTL_INT(_name, _default, _descr) \
int vt_##_name = (_default); \
SYSCTL_INT(_kern_vt, OID_AUTO, _name, CTLFLAG_RWTUN, &vt_##_name, 0, _descr)
struct vt_driver;
void vt_allocate(const struct vt_driver *, void *);
void vt_deallocate(const struct vt_driver *, void *);
typedef unsigned int vt_axis_t;
/*
* List of locks
* (d) locked by vd_lock
* (b) locked by vb_lock
* (G) locked by Giant
* (u) unlocked, locked by higher levels
* (c) const until freeing
* (?) yet to be determined
*/
/*
* Per-device datastructure.
*/
#ifndef SC_NO_CUTPASTE
struct vt_mouse_cursor;
#endif
struct vt_pastebuf {
term_char_t *vpb_buf; /* Copy-paste buffer. */
unsigned int vpb_bufsz; /* Buffer size. */
unsigned int vpb_len; /* Length of a last selection. */
};
struct vt_device {
struct vt_window *vd_windows[VT_MAXWINDOWS]; /* (c) Windows. */
struct vt_window *vd_curwindow; /* (d) Current window. */
struct vt_window *vd_savedwindow;/* (?) Saved for suspend. */
struct vt_pastebuf vd_pastebuf; /* (?) Copy/paste buf. */
const struct vt_driver *vd_driver; /* (c) Graphics driver. */
void *vd_softc; /* (u) Driver data. */
const struct vt_driver *vd_prev_driver;/* (?) Previous driver. */
void *vd_prev_softc; /* (?) Previous driver data. */
device_t vd_video_dev; /* (?) Video adapter. */
#ifndef SC_NO_CUTPASTE
struct vt_mouse_cursor *vd_mcursor; /* (?) Cursor bitmap. */
term_color_t vd_mcursor_fg; /* (?) Cursor fg color. */
term_color_t vd_mcursor_bg; /* (?) Cursor bg color. */
vt_axis_t vd_mx_drawn; /* (?) Mouse X and Y */
vt_axis_t vd_my_drawn; /* as of last redraw. */
int vd_mshown; /* (?) Mouse shown during */
#endif /* last redrawn. */
uint16_t vd_mx; /* (?) Current mouse X. */
uint16_t vd_my; /* (?) current mouse Y. */
uint32_t vd_mstate; /* (?) Mouse state. */
vt_axis_t vd_width; /* (?) Screen width. */
vt_axis_t vd_height; /* (?) Screen height. */
size_t vd_transpose; /* (?) Screen offset in FB */
struct mtx vd_lock; /* Per-device lock. */
struct cv vd_winswitch; /* (d) Window switch notify. */
struct callout vd_timer; /* (d) Display timer. */
volatile unsigned int vd_timer_armed;/* (?) Display timer started.*/
int vd_flags; /* (d) Device flags. */
#define VDF_TEXTMODE 0x01 /* Do text mode rendering. */
#define VDF_SPLASH 0x02 /* Splash screen active. */
#define VDF_ASYNC 0x04 /* vt_timer() running. */
#define VDF_INVALID 0x08 /* Entire screen should be re-rendered. */
#define VDF_DEAD 0x10 /* Early probing found nothing. */
#define VDF_INITIALIZED 0x20 /* vtterm_cnprobe already done. */
#define VDF_MOUSECURSOR 0x40 /* Mouse cursor visible. */
#define VDF_QUIET_BELL 0x80 /* Disable bell. */
#define VDF_DOWNGRADE 0x8000 /* The driver is being downgraded. */
int vd_keyboard; /* (G) Keyboard index. */
unsigned int vd_kbstate; /* (?) Device unit. */
unsigned int vd_unit; /* (c) Device unit. */
int vd_altbrk; /* (?) Alt break seq. state */
};
#define VD_PASTEBUF(vd) ((vd)->vd_pastebuf.vpb_buf)
#define VD_PASTEBUFSZ(vd) ((vd)->vd_pastebuf.vpb_bufsz)
#define VD_PASTEBUFLEN(vd) ((vd)->vd_pastebuf.vpb_len)
#define VT_LOCK(vd) mtx_lock(&(vd)->vd_lock)
#define VT_UNLOCK(vd) mtx_unlock(&(vd)->vd_lock)
#define VT_LOCK_ASSERT(vd, what) mtx_assert(&(vd)->vd_lock, what)
void vt_resume(struct vt_device *vd);
void vt_resume_flush_timer(struct vt_device *vd, int ms);
void vt_suspend(struct vt_device *vd);
/*
* Per-window terminal screen buffer.
*
* Because redrawing is performed asynchronously, the buffer keeps track
* of a rectangle that needs to be redrawn (vb_dirtyrect). Because this
* approach seemed to cause suboptimal performance (when the top left
* and the bottom right of the screen are modified), it also uses a set
* of bitmasks to keep track of the rows and columns (mod 64) that have
* been modified.
*/
struct vt_buf {
struct mtx vb_lock; /* Buffer lock. */
term_pos_t vb_scr_size; /* (b) Screen dimensions. */
int vb_flags; /* (b) Flags. */
#define VBF_CURSOR 0x1 /* Cursor visible. */
#define VBF_STATIC 0x2 /* Buffer is statically allocated. */
#define VBF_MTX_INIT 0x4 /* Mutex initialized. */
#define VBF_SCROLL 0x8 /* scroll locked mode. */
#define VBF_HISTORY_FULL 0x10 /* All rows filled. */
unsigned int vb_history_size;
unsigned int vb_roffset; /* (b) History rows offset. */
unsigned int vb_curroffset; /* (b) Saved rows offset. */
term_pos_t vb_cursor; /* (u) Cursor position. */
term_pos_t vb_mark_start; /* (b) Copy region start. */
term_pos_t vb_mark_end; /* (b) Copy region end. */
int vb_mark_last; /* Last mouse event. */
term_rect_t vb_dirtyrect; /* (b) Dirty rectangle. */
term_char_t *vb_buffer; /* (u) Data buffer. */
term_char_t **vb_rows; /* (u) Array of rows */
};
#ifdef SC_HISTORY_SIZE
#define VBF_DEFAULT_HISTORY_SIZE SC_HISTORY_SIZE
#else
#define VBF_DEFAULT_HISTORY_SIZE 500
#endif
void vtbuf_copy(struct vt_buf *, const term_rect_t *, const term_pos_t *);
void vtbuf_fill_locked(struct vt_buf *, const term_rect_t *, term_char_t);
void vtbuf_init_early(struct vt_buf *);
void vtbuf_init(struct vt_buf *, const term_pos_t *);
void vtbuf_grow(struct vt_buf *, const term_pos_t *, unsigned int);
void vtbuf_putchar(struct vt_buf *, const term_pos_t *, term_char_t);
void vtbuf_cursor_position(struct vt_buf *, const term_pos_t *);
void vtbuf_scroll_mode(struct vt_buf *vb, int yes);
void vtbuf_dirty(struct vt_buf *vb, const term_rect_t *area);
void vtbuf_undirty(struct vt_buf *, term_rect_t *);
void vtbuf_sethistory_size(struct vt_buf *, unsigned int);
int vtbuf_iscursor(const struct vt_buf *vb, int row, int col);
void vtbuf_cursor_visibility(struct vt_buf *, int);
#ifndef SC_NO_CUTPASTE
int vtbuf_set_mark(struct vt_buf *vb, int type, int col, int row);
int vtbuf_get_marked_len(struct vt_buf *vb);
void vtbuf_extract_marked(struct vt_buf *vb, term_char_t *buf, int sz);
#endif
#define VTB_MARK_NONE 0
#define VTB_MARK_END 1
#define VTB_MARK_START 2
#define VTB_MARK_WORD 3
#define VTB_MARK_ROW 4
#define VTB_MARK_EXTEND 5
#define VTB_MARK_MOVE 6
#define VTBUF_SLCK_ENABLE(vb) vtbuf_scroll_mode((vb), 1)
#define VTBUF_SLCK_DISABLE(vb) vtbuf_scroll_mode((vb), 0)
#define VTBUF_MAX_HEIGHT(vb) \
((vb)->vb_history_size)
#define VTBUF_GET_ROW(vb, r) \
((vb)->vb_rows[((vb)->vb_roffset + (r)) % VTBUF_MAX_HEIGHT(vb)])
#define VTBUF_GET_FIELD(vb, r, c) \
((vb)->vb_rows[((vb)->vb_roffset + (r)) % VTBUF_MAX_HEIGHT(vb)][(c)])
#define VTBUF_FIELD(vb, r, c) \
((vb)->vb_rows[((vb)->vb_curroffset + (r)) % VTBUF_MAX_HEIGHT(vb)][(c)])
#define VTBUF_ISCURSOR(vb, r, c) \
vtbuf_iscursor((vb), (r), (c))
#define VTBUF_DIRTYROW(mask, row) \
((mask)->vbm_row & ((uint64_t)1 << ((row) % 64)))
#define VTBUF_DIRTYCOL(mask, col) \
((mask)->vbm_col & ((uint64_t)1 << ((col) % 64)))
#define VTBUF_SPACE_CHAR(attr) (' ' | (attr))
#define VHS_SET 0
#define VHS_CUR 1
#define VHS_END 2
int vthistory_seek(struct vt_buf *, int offset, int whence);
void vthistory_addlines(struct vt_buf *vb, int offset);
void vthistory_getpos(const struct vt_buf *, unsigned int *offset);
/*
* Per-window datastructure.
*/
struct vt_window {
struct vt_device *vw_device; /* (c) Device. */
struct terminal *vw_terminal; /* (c) Terminal. */
struct vt_buf vw_buf; /* (u) Screen buffer. */
struct vt_font *vw_font; /* (d) Graphical font. */
term_rect_t vw_draw_area; /* (?) Drawable area. */
unsigned int vw_number; /* (c) Window number. */
int vw_kbdmode; /* (?) Keyboard mode. */
int vw_prev_kbdmode;/* (?) Previous mode. */
int vw_kbdstate; /* (?) Keyboard state. */
int vw_grabbed; /* (?) Grab count. */
char *vw_kbdsq; /* Escape sequence queue*/
unsigned int vw_flags; /* (d) Per-window flags. */
int vw_mouse_level;/* Mouse op mode. */
#define VWF_BUSY 0x1 /* Busy reconfiguring device. */
#define VWF_OPENED 0x2 /* TTY in use. */
#define VWF_SCROLL 0x4 /* Keys influence scrollback. */
#define VWF_CONSOLE 0x8 /* Kernel message console window. */
#define VWF_VTYLOCK 0x10 /* Prevent window switch. */
#define VWF_MOUSE_HIDE 0x20 /* Disable mouse events processing. */
#define VWF_READY 0x40 /* Window fully initialized. */
#define VWF_GRAPHICS 0x80 /* Window in graphics mode (KDSETMODE). */
#define VWF_SWWAIT_REL 0x10000 /* Program wait for VT acquire is done. */
#define VWF_SWWAIT_ACQ 0x20000 /* Program wait for VT release is done. */
pid_t vw_pid; /* Terminal holding process */
struct proc *vw_proc;
struct vt_mode vw_smode; /* switch mode */
struct callout vw_proc_dead_timer;
struct vt_window *vw_switch_to;
};
#define VT_AUTO 0 /* switching is automatic */
#define VT_PROCESS 1 /* switching controlled by prog */
#define VT_KERNEL 255 /* switching controlled in kernel */
#define IS_VT_PROC_MODE(vw) ((vw)->vw_smode.mode == VT_PROCESS)
/*
* Per-device driver routines.
*/
typedef int vd_init_t(struct vt_device *vd);
typedef int vd_probe_t(struct vt_device *vd);
typedef void vd_fini_t(struct vt_device *vd, void *softc);
typedef void vd_postswitch_t(struct vt_device *vd);
typedef void vd_blank_t(struct vt_device *vd, term_color_t color);
typedef void vd_bitblt_text_t(struct vt_device *vd, const struct vt_window *vw,
const term_rect_t *area);
typedef void vd_bitblt_bmp_t(struct vt_device *vd, const struct vt_window *vw,
const uint8_t *pattern, const uint8_t *mask,
unsigned int width, unsigned int height,
unsigned int x, unsigned int y, term_color_t fg, term_color_t bg);
typedef int vd_fb_ioctl_t(struct vt_device *, u_long, caddr_t, struct thread *);
typedef int vd_fb_mmap_t(struct vt_device *, vm_ooffset_t, vm_paddr_t *, int,
vm_memattr_t *);
typedef void vd_drawrect_t(struct vt_device *, int, int, int, int, int,
term_color_t);
typedef void vd_setpixel_t(struct vt_device *, int, int, term_color_t);
typedef void vd_suspend_t(struct vt_device *);
typedef void vd_resume_t(struct vt_device *);
struct vt_driver {
char vd_name[16];
/* Console attachment. */
vd_probe_t *vd_probe;
vd_init_t *vd_init;
vd_fini_t *vd_fini;
/* Drawing. */
vd_blank_t *vd_blank;
vd_drawrect_t *vd_drawrect;
vd_setpixel_t *vd_setpixel;
vd_bitblt_text_t *vd_bitblt_text;
vd_bitblt_bmp_t *vd_bitblt_bmp;
/* Framebuffer ioctls, if present. */
vd_fb_ioctl_t *vd_fb_ioctl;
/* Framebuffer mmap, if present. */
vd_fb_mmap_t *vd_fb_mmap;
/* Update display setting on vt switch. */
vd_postswitch_t *vd_postswitch;
/* Suspend/resume handlers. */
vd_suspend_t *vd_suspend;
vd_resume_t *vd_resume;
/* Priority to know which one can override */
int vd_priority;
#define VD_PRIORITY_DUMB 10
#define VD_PRIORITY_GENERIC 100
#define VD_PRIORITY_SPECIFIC 1000
};
/*
* Console device madness.
*
* Utility macro to make early vt(4) instances work.
*/
extern struct vt_device vt_consdev;
extern struct terminal vt_consterm;
extern const struct terminal_class vt_termclass;
void vt_upgrade(struct vt_device *vd);
#define PIXEL_WIDTH(w) ((w) / 8)
#define PIXEL_HEIGHT(h) ((h) / 16)
#ifndef VT_FB_MAX_WIDTH
#define VT_FB_MAX_WIDTH 4096
#endif
#ifndef VT_FB_MAX_HEIGHT
#define VT_FB_MAX_HEIGHT 2400
#endif
/* name argument is not used yet. */
#define VT_DRIVER_DECLARE(name, drv) DATA_SET(vt_drv_set, drv)
/*
* Fonts.
*
* Remapping tables are used to map Unicode points to glyphs. They need
* to be sorted, because vtfont_lookup() performs a binary search. Each
* font has two remapping tables, for normal and bold. When a character
* is not present in bold, it uses a normal glyph. When no glyph is
* available, it uses glyph 0, which is normally equal to U+FFFD.
*/
struct vt_font_map {
uint32_t vfm_src;
uint16_t vfm_dst;
uint16_t vfm_len;
};
struct vt_font {
struct vt_font_map *vf_map[VFNT_MAPS];
uint8_t *vf_bytes;
unsigned int vf_height, vf_width;
unsigned int vf_map_count[VFNT_MAPS];
unsigned int vf_refcount;
};
#ifndef SC_NO_CUTPASTE
struct vt_mouse_cursor {
uint8_t map[64 * 64 / 8];
uint8_t mask[64 * 64 / 8];
uint8_t width;
uint8_t height;
};
#endif
const uint8_t *vtfont_lookup(const struct vt_font *vf, term_char_t c);
struct vt_font *vtfont_ref(struct vt_font *vf);
void vtfont_unref(struct vt_font *vf);
int vtfont_load(vfnt_t *f, struct vt_font **ret);
/* Sysmouse. */
void sysmouse_process_event(mouse_info_t *mi);
#ifndef SC_NO_CUTPASTE
void vt_mouse_event(int type, int x, int y, int event, int cnt, int mlevel);
void vt_mouse_state(int show);
#endif
#define VT_MOUSE_SHOW 1
#define VT_MOUSE_HIDE 0
/* Utilities. */
void vt_compute_drawable_area(struct vt_window *);
void vt_determine_colors(term_char_t c, int cursor,
term_color_t *fg, term_color_t *bg);
int vt_is_cursor_in_area(const struct vt_device *vd,
const term_rect_t *area);
void vt_termsize(struct vt_device *, struct vt_font *, term_pos_t *);
void vt_winsize(struct vt_device *, struct vt_font *, struct winsize *);
/* Logos-on-boot. */
#define VT_LOGOS_DRAW_BEASTIE 0
#define VT_LOGOS_DRAW_ALT_BEASTIE 1
#define VT_LOGOS_DRAW_ORB 2
extern int vt_draw_logo_cpus;
extern int vt_splash_cpu;
extern int vt_splash_ncpu;
extern int vt_splash_cpu_style;
extern int vt_splash_cpu_duration;
extern const unsigned int vt_logo_sprite_height;
extern const unsigned int vt_logo_sprite_width;
void vtterm_draw_cpu_logos(struct vt_device *);
#endif /* !_DEV_VT_VT_H_ */
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