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freebsd-nq/sys/dev/syscons/scterm-sc.c
Ed Schouten bc093719ca Integrate the new MPSAFE TTY layer to the FreeBSD operating system. 
The last half year I've been working on a replacement TTY layer for the
FreeBSD kernel. The new TTY layer was designed to improve the following:

- Improved driver model:

  The old TTY layer has a driver model that is not abstract enough to
  make it friendly to use. A good example is the output path, where the
  device drivers directly access the output buffers. This means that an
  in-kernel PPP implementation must always convert network buffers into
  TTY buffers.

  If a PPP implementation would be built on top of the new TTY layer
  (still needs a hooks layer, though), it would allow the PPP
  implementation to directly hand the data to the TTY driver.

- Improved hotplugging:

  With the old TTY layer, it isn't entirely safe to destroy TTY's from
  the system. This implementation has a two-step destructing design,
  where the driver first abandons the TTY. After all threads have left
  the TTY, the TTY layer calls a routine in the driver, which can be
  used to free resources (unit numbers, etc).

  The pts(4) driver also implements this feature, which means
  posix_openpt() will now return PTY's that are created on the fly.

- Improved performance:

  One of the major improvements is the per-TTY mutex, which is expected
  to improve scalability when compared to the old Giant locking.
  Another change is the unbuffered copying to userspace, which is both
  used on TTY device nodes and PTY masters.

Upgrading should be quite straightforward. Unlike previous versions,
existing kernel configuration files do not need to be changed, except
when they reference device drivers that are listed in UPDATING.

Obtained from:		//depot/projects/mpsafetty/...
Approved by:		philip (ex-mentor)
Discussed:		on the lists, at BSDCan, at the DevSummit
Sponsored by:		Snow B.V., the Netherlands
dcons(4) fixed by:	kan
2008-08-20 08:31:58 +00:00

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/*-
* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
* Copyright (c) 1992-1998 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 as
* the first lines of this file unmodified.
* 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 AUTHORS ``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 AUTHORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_syscons.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/consio.h>
#if defined(__sparc64__) || defined(__powerpc__)
#include <machine/sc_machdep.h>
#else
#include <machine/pc/display.h>
#endif
#include <dev/syscons/syscons.h>
#include <dev/syscons/sctermvar.h>
#ifndef SC_DUMB_TERMINAL
#define MAX_ESC_PAR 5
/* attribute flags */
typedef struct {
u_short fg; /* foreground color */
u_short bg; /* background color */
} color_t;
typedef struct {
int flags;
#define SCTERM_BUSY (1 << 0)
int esc;
int num_param;
int last_param;
int param[MAX_ESC_PAR];
int saved_xpos;
int saved_ypos;
int attr_mask; /* current logical attr mask */
#define NORMAL_ATTR 0x00
#define BLINK_ATTR 0x01
#define BOLD_ATTR 0x02
#define UNDERLINE_ATTR 0x04
#define REVERSE_ATTR 0x08
#define FG_CHANGED 0x10
#define BG_CHANGED 0x20
int cur_attr; /* current hardware attr word */
color_t cur_color; /* current hardware color */
color_t std_color; /* normal hardware color */
color_t rev_color; /* reverse hardware color */
color_t dflt_std_color; /* default normal color */
color_t dflt_rev_color; /* default reverse color */
} term_stat;
static sc_term_init_t scterm_init;
static sc_term_term_t scterm_term;
static sc_term_puts_t scterm_puts;
static sc_term_ioctl_t scterm_ioctl;
static sc_term_reset_t scterm_reset;
static sc_term_default_attr_t scterm_default_attr;
static sc_term_clear_t scterm_clear;
static sc_term_notify_t scterm_notify;
static sc_term_input_t scterm_input;
static sc_term_sw_t sc_term_sc = {
{ NULL, NULL },
"sc", /* emulator name */
"syscons terminal", /* description */
"*", /* matching renderer, any :-) */
sizeof(term_stat), /* softc size */
0,
scterm_init,
scterm_term,
scterm_puts,
scterm_ioctl,
scterm_reset,
scterm_default_attr,
scterm_clear,
scterm_notify,
scterm_input,
};
SCTERM_MODULE(sc, sc_term_sc);
static term_stat reserved_term_stat;
static void scterm_scan_esc(scr_stat *scp, term_stat *tcp,
u_char c);
static int mask2attr(term_stat *tcp);
static int
scterm_init(scr_stat *scp, void **softc, int code)
{
term_stat *tcp;
if (*softc == NULL) {
if (reserved_term_stat.flags & SCTERM_BUSY)
return EINVAL;
*softc = &reserved_term_stat;
}
tcp = *softc;
switch (code) {
case SC_TE_COLD_INIT:
bzero(tcp, sizeof(*tcp));
tcp->flags = SCTERM_BUSY;
tcp->esc = 0;
tcp->saved_xpos = -1;
tcp->saved_ypos = -1;
tcp->attr_mask = NORMAL_ATTR;
/* XXX */
tcp->dflt_std_color.fg = SC_NORM_ATTR & 0x0f;
tcp->dflt_std_color.bg = (SC_NORM_ATTR >> 4) & 0x0f;
tcp->dflt_rev_color.fg = SC_NORM_REV_ATTR & 0x0f;
tcp->dflt_rev_color.bg = (SC_NORM_REV_ATTR >> 4) & 0x0f;
tcp->std_color = tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
++sc_term_sc.te_refcount;
break;
case SC_TE_WARM_INIT:
tcp->esc = 0;
tcp->saved_xpos = -1;
tcp->saved_ypos = -1;
#if 0
tcp->std_color = tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
#endif
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
break;
}
return 0;
}
static int
scterm_term(scr_stat *scp, void **softc)
{
if (*softc == &reserved_term_stat) {
*softc = NULL;
bzero(&reserved_term_stat, sizeof(reserved_term_stat));
}
--sc_term_sc.te_refcount;
return 0;
}
static void
scterm_scan_esc(scr_stat *scp, term_stat *tcp, u_char c)
{
static u_char ansi_col[16] = {
FG_BLACK, FG_RED, FG_GREEN, FG_BROWN,
FG_BLUE, FG_MAGENTA, FG_CYAN, FG_LIGHTGREY,
FG_DARKGREY, FG_LIGHTRED, FG_LIGHTGREEN, FG_YELLOW,
FG_LIGHTBLUE, FG_LIGHTMAGENTA, FG_LIGHTCYAN, FG_WHITE
};
static int cattrs[] = {
0, /* block */
CONS_BLINK_CURSOR, /* blinking block */
CONS_CHAR_CURSOR, /* underline */
CONS_CHAR_CURSOR | CONS_BLINK_CURSOR, /* blinking underline */
CONS_RESET_CURSOR, /* reset to default */
CONS_HIDDEN_CURSOR, /* hide cursor */
};
static int tcattrs[] = {
CONS_RESET_CURSOR | CONS_LOCAL_CURSOR, /* normal */
CONS_HIDDEN_CURSOR | CONS_LOCAL_CURSOR, /* invisible */
CONS_BLINK_CURSOR | CONS_LOCAL_CURSOR, /* very visible */
};
sc_softc_t *sc;
int v0, v1, v2;
int i, n;
i = n = 0;
sc = scp->sc;
if (tcp->esc == 1) { /* seen ESC */
switch (c) {
case '7': /* Save cursor position */
tcp->saved_xpos = scp->xpos;
tcp->saved_ypos = scp->ypos;
break;
case '8': /* Restore saved cursor position */
if (tcp->saved_xpos >= 0 && tcp->saved_ypos >= 0)
sc_move_cursor(scp, tcp->saved_xpos,
tcp->saved_ypos);
break;
case '[': /* Start ESC [ sequence */
tcp->esc = 2;
tcp->last_param = -1;
for (i = tcp->num_param; i < MAX_ESC_PAR; i++)
tcp->param[i] = 1;
tcp->num_param = 0;
return;
case 'M': /* Move cursor up 1 line, scroll if at top */
sc_term_up_scroll(scp, 1, sc->scr_map[0x20],
tcp->cur_attr, 0, 0);
break;
#ifdef notyet
case 'Q':
tcp->esc = 4;
return;
#endif
case 'c': /* reset */
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color
= tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_attr = mask2attr(tcp);
sc_change_cursor_shape(scp,
CONS_RESET_CURSOR | CONS_LOCAL_CURSOR, -1, -1);
sc_clear_screen(scp);
break;
case '(': /* iso-2022: designate 94 character set to G0 */
tcp->esc = 5;
return;
}
} else if (tcp->esc == 2) { /* seen ESC [ */
if (c >= '0' && c <= '9') {
if (tcp->num_param < MAX_ESC_PAR) {
if (tcp->last_param != tcp->num_param) {
tcp->last_param = tcp->num_param;
tcp->param[tcp->num_param] = 0;
} else {
tcp->param[tcp->num_param] *= 10;
}
tcp->param[tcp->num_param] += c - '0';
return;
}
}
tcp->num_param = tcp->last_param + 1;
switch (c) {
case ';':
if (tcp->num_param < MAX_ESC_PAR)
return;
break;
case '=':
tcp->esc = 3;
tcp->last_param = -1;
for (i = tcp->num_param; i < MAX_ESC_PAR; i++)
tcp->param[i] = 1;
tcp->num_param = 0;
return;
case 'A': /* up n rows */
sc_term_up(scp, tcp->param[0], 0);
break;
case 'B': /* down n rows */
sc_term_down(scp, tcp->param[0], 0);
break;
case 'C': /* right n columns */
sc_term_right(scp, tcp->param[0]);
break;
case 'D': /* left n columns */
sc_term_left(scp, tcp->param[0]);
break;
case 'E': /* cursor to start of line n lines down */
n = tcp->param[0];
if (n < 1)
n = 1;
sc_move_cursor(scp, 0, scp->ypos + n);
break;
case 'F': /* cursor to start of line n lines up */
n = tcp->param[0];
if (n < 1)
n = 1;
sc_move_cursor(scp, 0, scp->ypos - n);
break;
case 'f': /* Cursor move */
case 'H':
if (tcp->num_param == 0)
sc_move_cursor(scp, 0, 0);
else if (tcp->num_param == 2)
sc_move_cursor(scp, tcp->param[1] - 1,
tcp->param[0] - 1);
break;
case 'J': /* Clear all or part of display */
if (tcp->num_param == 0)
n = 0;
else
n = tcp->param[0];
sc_term_clr_eos(scp, n, sc->scr_map[0x20],
tcp->cur_attr);
break;
case 'K': /* Clear all or part of line */
if (tcp->num_param == 0)
n = 0;
else
n = tcp->param[0];
sc_term_clr_eol(scp, n, sc->scr_map[0x20],
tcp->cur_attr);
break;
case 'L': /* Insert n lines */
sc_term_ins_line(scp, scp->ypos, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'M': /* Delete n lines */
sc_term_del_line(scp, scp->ypos, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'P': /* Delete n chars */
sc_term_del_char(scp, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr);
break;
case '@': /* Insert n chars */
sc_term_ins_char(scp, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr);
break;
case 'S': /* scroll up n lines */
sc_term_del_line(scp, 0, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'T': /* scroll down n lines */
sc_term_ins_line(scp, 0, tcp->param[0],
sc->scr_map[0x20], tcp->cur_attr, 0);
break;
case 'X': /* erase n characters in line */
n = tcp->param[0];
if (n < 1)
n = 1;
if (n > scp->xsize - scp->xpos)
n = scp->xsize - scp->xpos;
sc_vtb_erase(&scp->vtb, scp->cursor_pos, n,
sc->scr_map[0x20], tcp->cur_attr);
mark_for_update(scp, scp->cursor_pos);
mark_for_update(scp, scp->cursor_pos + n - 1);
break;
case 'Z': /* move n tabs backwards */
sc_term_backtab(scp, tcp->param[0]);
break;
case '`': /* move cursor to column n */
sc_term_col(scp, tcp->param[0]);
break;
case 'a': /* move cursor n columns to the right */
sc_term_right(scp, tcp->param[0]);
break;
case 'd': /* move cursor to row n */
sc_term_row(scp, tcp->param[0]);
break;
case 'e': /* move cursor n rows down */
sc_term_down(scp, tcp->param[0], 0);
break;
case 'm': /* change attribute */
if (tcp->num_param == 0) {
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
break;
}
for (i = 0; i < tcp->num_param; i++) {
switch (n = tcp->param[i]) {
case 0: /* back to normal */
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
break;
case 1: /* bold */
tcp->attr_mask |= BOLD_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 4: /* underline */
tcp->attr_mask |= UNDERLINE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 5: /* blink */
tcp->attr_mask |= BLINK_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 7: /* reverse */
tcp->attr_mask |= REVERSE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 22: /* remove bold (or dim) */
tcp->attr_mask &= ~BOLD_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 24: /* remove underline */
tcp->attr_mask &= ~UNDERLINE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 25: /* remove blink */
tcp->attr_mask &= ~BLINK_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 27: /* remove reverse */
tcp->attr_mask &= ~REVERSE_ATTR;
tcp->cur_attr = mask2attr(tcp);
break;
case 30: case 31: /* set ansi fg color */
case 32: case 33: case 34:
case 35: case 36: case 37:
tcp->attr_mask |= FG_CHANGED;
tcp->cur_color.fg = ansi_col[n - 30];
tcp->cur_attr = mask2attr(tcp);
break;
case 39: /* restore fg color back to normal */
tcp->attr_mask &= ~(FG_CHANGED|BOLD_ATTR);
tcp->cur_color.fg = tcp->std_color.fg;
tcp->cur_attr = mask2attr(tcp);
break;
case 40: case 41: /* set ansi bg color */
case 42: case 43: case 44:
case 45: case 46: case 47:
tcp->attr_mask |= BG_CHANGED;
tcp->cur_color.bg = ansi_col[n - 40];
tcp->cur_attr = mask2attr(tcp);
break;
case 49: /* restore bg color back to normal */
tcp->attr_mask &= ~BG_CHANGED;
tcp->cur_color.bg = tcp->std_color.bg;
tcp->cur_attr = mask2attr(tcp);
break;
}
}
break;
case 's': /* Save cursor position */
tcp->saved_xpos = scp->xpos;
tcp->saved_ypos = scp->ypos;
break;
case 'u': /* Restore saved cursor position */
if (tcp->saved_xpos >= 0 && tcp->saved_ypos >= 0)
sc_move_cursor(scp, tcp->saved_xpos,
tcp->saved_ypos);
break;
case 'x':
if (tcp->num_param == 0)
n = 0;
else
n = tcp->param[0];
switch (n) {
case 0: /* reset colors and attributes back to normal */
tcp->attr_mask = NORMAL_ATTR;
tcp->cur_color = tcp->std_color
= tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_attr = mask2attr(tcp);
break;
case 1: /* set ansi background */
tcp->attr_mask &= ~BG_CHANGED;
tcp->cur_color.bg = tcp->std_color.bg
= ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 2: /* set ansi foreground */
tcp->attr_mask &= ~FG_CHANGED;
tcp->cur_color.fg = tcp->std_color.fg
= ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 3: /* set adapter attribute directly */
tcp->attr_mask &= ~(FG_CHANGED | BG_CHANGED);
tcp->cur_color.fg = tcp->std_color.fg
= tcp->param[1] & 0x0f;
tcp->cur_color.bg = tcp->std_color.bg
= (tcp->param[1] >> 4) & 0x0f;
tcp->cur_attr = mask2attr(tcp);
break;
case 5: /* set ansi reverse background */
tcp->rev_color.bg = ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 6: /* set ansi reverse foreground */
tcp->rev_color.fg = ansi_col[tcp->param[1] & 0x0f];
tcp->cur_attr = mask2attr(tcp);
break;
case 7: /* set adapter reverse attribute directly */
tcp->rev_color.fg = tcp->param[1] & 0x0f;
tcp->rev_color.bg = (tcp->param[1] >> 4) & 0x0f;
tcp->cur_attr = mask2attr(tcp);
break;
}
break;
case 'z': /* switch to (virtual) console n */
if (tcp->num_param == 1)
sc_switch_scr(sc, tcp->param[0]);
break;
}
} else if (tcp->esc == 3) { /* seen ESC [0-9]+ = */
if (c >= '0' && c <= '9') {
if (tcp->num_param < MAX_ESC_PAR) {
if (tcp->last_param != tcp->num_param) {
tcp->last_param = tcp->num_param;
tcp->param[tcp->num_param] = 0;
} else {
tcp->param[tcp->num_param] *= 10;
}
tcp->param[tcp->num_param] += c - '0';
return;
}
}
tcp->num_param = tcp->last_param + 1;
switch (c) {
case ';':
if (tcp->num_param < MAX_ESC_PAR)
return;
break;
case 'A': /* set display border color */
if (tcp->num_param == 1) {
scp->border=tcp->param[0] & 0xff;
if (scp == sc->cur_scp)
sc_set_border(scp, scp->border);
}
break;
case 'B': /* set bell pitch and duration */
if (tcp->num_param == 2) {
scp->bell_pitch = tcp->param[0];
scp->bell_duration =
(tcp->param[1] * hz + 99) / 100;
}
break;
case 'C': /* set global/parmanent cursor type & shape */
i = spltty();
n = tcp->num_param;
v0 = tcp->param[0];
v1 = tcp->param[1];
v2 = tcp->param[2];
switch (n) {
case 1: /* flags only */
if (v0 < sizeof(cattrs)/sizeof(cattrs[0]))
v0 = cattrs[v0];
else /* backward compatibility */
v0 = cattrs[v0 & 0x3];
sc_change_cursor_shape(scp, v0, -1, -1);
break;
case 2:
v2 = 0;
v0 &= 0x1f; /* backward compatibility */
v1 &= 0x1f;
/* FALL THROUGH */
case 3: /* base and height */
if (v2 == 0) /* count from top */
sc_change_cursor_shape(scp, -1,
scp->font_size - v1 - 1,
v1 - v0 + 1);
else if (v2 == 1) /* count from bottom */
sc_change_cursor_shape(scp, -1,
v0, v1 - v0 + 1);
break;
}
splx(i);
break;
case 'F': /* set adapter foreground */
if (tcp->num_param == 1) {
tcp->attr_mask &= ~FG_CHANGED;
tcp->cur_color.fg = tcp->std_color.fg
= tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'G': /* set adapter background */
if (tcp->num_param == 1) {
tcp->attr_mask &= ~BG_CHANGED;
tcp->cur_color.bg = tcp->std_color.bg
= tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'H': /* set adapter reverse foreground */
if (tcp->num_param == 1) {
tcp->rev_color.fg = tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'I': /* set adapter reverse background */
if (tcp->num_param == 1) {
tcp->rev_color.bg = tcp->param[0] & 0x0f;
tcp->cur_attr = mask2attr(tcp);
}
break;
case 'S': /* set local/temporary cursor type & shape */
i = spltty();
n = tcp->num_param;
v0 = tcp->param[0];
switch (n) {
case 0:
v0 = 0;
/* FALL THROUGH */
case 1:
if (v0 < sizeof(tcattrs)/sizeof(tcattrs[0]))
sc_change_cursor_shape(scp,
tcattrs[v0], -1, -1);
break;
}
splx(i);
break;
}
#ifdef notyet
} else if (tcp->esc == 4) { /* seen ESC Q */
/* to be filled */
#endif
} else if (tcp->esc == 5) { /* seen ESC ( */
switch (c) {
case 'B': /* iso-2022: desginate ASCII into G0 */
break;
/* other items to be filled */
default:
break;
}
}
tcp->esc = 0;
}
static void
scterm_puts(scr_stat *scp, u_char *buf, int len)
{
term_stat *tcp;
tcp = scp->ts;
outloop:
scp->sc->write_in_progress++;
if (tcp->esc) {
scterm_scan_esc(scp, tcp, *buf);
buf++;
len--;
} else {
switch (*buf) {
case 0x1b:
tcp->esc = 1;
tcp->num_param = 0;
buf++;
len--;
break;
default:
sc_term_gen_print(scp, &buf, &len, tcp->cur_attr);
break;
}
}
sc_term_gen_scroll(scp, scp->sc->scr_map[0x20], tcp->cur_attr);
scp->sc->write_in_progress--;
if (len)
goto outloop;
}
static int
scterm_ioctl(scr_stat *scp, struct tty *tp, u_long cmd, caddr_t data,
struct thread *td)
{
term_stat *tcp = scp->ts;
vid_info_t *vi;
switch (cmd) {
case GIO_ATTR: /* get current attributes */
/* FIXME: */
*(int*)data = (tcp->cur_attr >> 8) & 0xff;
return 0;
case CONS_GETINFO: /* get current (virtual) console info */
vi = (vid_info_t *)data;
if (vi->size != sizeof(struct vid_info))
return EINVAL;
vi->mv_norm.fore = tcp->std_color.fg;
vi->mv_norm.back = tcp->std_color.bg;
vi->mv_rev.fore = tcp->rev_color.fg;
vi->mv_rev.back = tcp->rev_color.bg;
/*
* The other fields are filled by the upper routine. XXX
*/
return ENOIOCTL;
}
return ENOIOCTL;
}
static int
scterm_reset(scr_stat *scp, int code)
{
/* FIXME */
return 0;
}
static void
scterm_default_attr(scr_stat *scp, int color, int rev_color)
{
term_stat *tcp = scp->ts;
tcp->dflt_std_color.fg = color & 0x0f;
tcp->dflt_std_color.bg = (color >> 4) & 0x0f;
tcp->dflt_rev_color.fg = rev_color & 0x0f;
tcp->dflt_rev_color.bg = (rev_color >> 4) & 0x0f;
tcp->std_color = tcp->dflt_std_color;
tcp->rev_color = tcp->dflt_rev_color;
tcp->cur_color = tcp->std_color;
tcp->cur_attr = mask2attr(tcp);
}
static void
scterm_clear(scr_stat *scp)
{
term_stat *tcp = scp->ts;
sc_move_cursor(scp, 0, 0);
sc_vtb_clear(&scp->vtb, scp->sc->scr_map[0x20], tcp->cur_attr);
mark_all(scp);
}
static void
scterm_notify(scr_stat *scp, int event)
{
switch (event) {
case SC_TE_NOTIFY_VTSWITCH_IN:
break;
case SC_TE_NOTIFY_VTSWITCH_OUT:
break;
}
}
static int
scterm_input(scr_stat *scp, int c, struct tty *tp)
{
return FALSE;
}
/*
* Calculate hardware attributes word using logical attributes mask and
* hardware colors
*/
/* FIXME */
static int
mask2attr(term_stat *tcp)
{
int attr, mask = tcp->attr_mask;
if (mask & REVERSE_ATTR) {
attr = ((mask & FG_CHANGED) ?
tcp->cur_color.bg : tcp->rev_color.fg) |
(((mask & BG_CHANGED) ?
tcp->cur_color.fg : tcp->rev_color.bg) << 4);
} else
attr = tcp->cur_color.fg | (tcp->cur_color.bg << 4);
/* XXX: underline mapping for Hercules adapter can be better */
if (mask & (BOLD_ATTR | UNDERLINE_ATTR))
attr ^= 0x08;
if (mask & BLINK_ATTR)
attr ^= 0x80;
return (attr << 8);
}
#endif /* SC_DUMB_TERMINAL */
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