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sys/dev/vt/vt_cpulogos.c

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/*-
* Copyright (c) 2015 Conrad Meyer <cse.cem@gmail.com>
* 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.
* 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.
*/
#include <sys/cdefs.h>
markjUnsubmitted
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There should be a __FBSDID marker here.

markj: There should be a __FBSDID marker here.
cemAuthorUnsubmitted
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Hm, ok.

cem: Hm, ok.
#include <sys/param.h>
#include <sys/callout.h>
#include <sys/cons.h>
#include <sys/kernel.h>
#include <sys/smp.h>
#include <sys/systm.h>
#include <sys/terminal.h>
#include <dev/vt/vt.h>
extern const unsigned char vt_beastie_vga16[];
extern const unsigned char vt_beastie2_vga16[];
markjUnsubmitted
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Is there a reason these declarations aren't under the #ifdef DEV_SPLASH?

Alternately, can this file be made conditional on the "splash" kernel option?

markj: Is there a reason these declarations aren't under the #ifdef DEV_SPLASH? Alternately, can this…
cemAuthorUnsubmitted
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Alternately, can this file be made conditional on the "splash" kernel option?

I guess so. I forget why I didn't do that originally. I'll give it a spin.

cem: > Alternately, can this file be made conditional on the "splash" kernel option? I guess so. I…
extern const unsigned char vt_orb_vga16[];
#ifdef DEV_SPLASH
static struct callout vt_splash_cpu_callout;
static inline unsigned char
vt_vga2bsd(unsigned char vga)
{
static const unsigned char lut[8] = {
0,
4, /* 1 and 4 swap */
2,
6, /* 3 and 6 swap */
1, /* 4 and 1 swap */
5,
3, /* 6 and 3 swap */
7,
};
unsigned bright;
bright = (vga & 0x8);
return (lut[vga & 0x7] | bright);
}
static void
vt_draw_2_vga16_px(struct vt_device *vd, vt_axis_t x, vt_axis_t y,
unsigned char color)
{
vd->vd_driver->vd_setpixel(vd, x, y, vt_vga2bsd(color >> 4));
vd->vd_driver->vd_setpixel(vd, x + 1, y, vt_vga2bsd(color & 0xf));
}
static void
vt_draw_1_logo(struct vt_device *vd, vt_axis_t top, vt_axis_t left)
{
const unsigned char rle_sent = 0x16, *data;
unsigned xy, run, runcolor, i;
markjUnsubmitted
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The vt code seems to consistently use "unsigned int" rather than just "unsigned".

markj: The vt code seems to consistently use "unsigned int" rather than just "unsigned".
cemAuthorUnsubmitted
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Will fix.

cem: Will fix.
switch (vt_splash_cpu_style) {
case VT_LOGOS_DRAW_ALT_BEASTIE:
data = vt_beastie2_vga16;
break;
case VT_LOGOS_DRAW_ORB:
data = vt_orb_vga16;
break;
case VT_LOGOS_DRAW_BEASTIE:
/* FALLTHROUGH */
default:
data = vt_beastie_vga16;
break;
}
/* Decode basic RLE (gets us to 30-40% of uncompressed data size): */
for (i = 0, xy = 0; xy < vt_logo_sprite_height * vt_logo_sprite_width;) {
if (data[i] == rle_sent) {
runcolor = data[i + 1];
run = data[i + 2];
for (; run; run--, xy += 2)
vt_draw_2_vga16_px(vd,
left + (xy % vt_logo_sprite_width),
top + (xy / vt_logo_sprite_width),
runcolor);
i += 3;
} else {
vt_draw_2_vga16_px(vd, left + (xy % vt_logo_sprite_width),
top + (xy / vt_logo_sprite_width), data[i]);
i++;
xy += 2;
}
}
}
void
vtterm_draw_cpu_logos(struct vt_device *vd)
{
unsigned ncpu, i;
vt_axis_t left;
if (vt_splash_ncpu)
ncpu = vt_splash_ncpu;
else {
ncpu = mp_ncpus;
if (ncpu < 1)
ncpu = 1;
}
if (vd->vd_driver->vd_drawrect)
vd->vd_driver->vd_drawrect(vd, 0, 0, vd->vd_width,
vt_logo_sprite_height, 1, TC_BLACK);
/*
* Blank is okay because we only ever draw beasties on full screen
* refreshes.
*/
else if (vd->vd_driver->vd_blank)
vd->vd_driver->vd_blank(vd, TC_BLACK);
ncpu = MIN(ncpu, vd->vd_width / vt_logo_sprite_width);
for (i = 0, left = 0; i < ncpu; left += vt_logo_sprite_width, i++)
vt_draw_1_logo(vd, 0, left);
}
static void
vt_fini_logos(void *dummy __unused)
{
struct vt_device *vd;
struct vt_window *vw;
struct terminal *tm;
struct vt_font *vf;
struct winsize wsz;
term_pos_t size;
if (!vt_draw_logo_cpus)
return;
if (!vty_enabled(VTY_VT))
return;
if (!vt_splash_cpu)
return;
tm = &vt_consterm;
vw = tm->tm_softc;
if (vw == NULL)
return;
vd = vw->vw_device;
if (vd == NULL)
return;
vf = vw->vw_font;
if (vf == NULL)
return;
VT_LOCK(vd);
if ((vd->vd_flags & (VDF_DEAD | VDF_TEXTMODE)) != 0)
goto out;
vt_draw_logo_cpus = 0;
VT_UNLOCK(vd);
vt_termsize(vd, vf, &size);
vt_winsize(vd, vf, &wsz);
/* Resize screen buffer and terminal. */
terminal_mute(tm, 1);
vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size);
terminal_set_winsize_blank(tm, &wsz, 0, NULL);
terminal_set_cursor(tm, &vw->vw_buf.vb_cursor);
terminal_mute(tm, 0);
VT_LOCK(vd);
vt_compute_drawable_area(vw);
if (vd->vd_curwindow == vw) {
vd->vd_flags |= VDF_INVALID;
vt_resume_flush_timer(vd, 0);
}
out:
VT_UNLOCK(vd);
}
static void
vt_init_logos(void *dummy)
{
struct vt_device *vd;
struct vt_window *vw;
struct terminal *tm;
struct vt_font *vf;
struct winsize wsz;
term_pos_t size;
if (!vty_enabled(VTY_VT))
return;
if (!vt_splash_cpu)
return;
tm = &vt_consterm;
vw = tm->tm_softc;
if (vw == NULL)
return;
vd = vw->vw_device;
if (vd == NULL)
return;
vf = vw->vw_font;
if (vf == NULL)
return;
VT_LOCK(vd);
KASSERT((vd->vd_flags & VDF_INITIALIZED) != 0,
("vd %p not initialized", vd));
if ((vd->vd_flags & (VDF_DEAD | VDF_TEXTMODE)) != 0)
goto out;
if (vd->vd_height <= vt_logo_sprite_height)
goto out;
vt_draw_logo_cpus = 1;
VT_UNLOCK(vd);
vt_termsize(vd, vf, &size);
vt_winsize(vd, vf, &wsz);
/* Resize screen buffer and terminal. */
terminal_mute(tm, 1);
vtbuf_grow(&vw->vw_buf, &size, vw->vw_buf.vb_history_size);
terminal_set_winsize_blank(tm, &wsz, 0, NULL);
terminal_set_cursor(tm, &vw->vw_buf.vb_cursor);
terminal_mute(tm, 0);
VT_LOCK(vd);
vt_compute_drawable_area(vw);
if (vd->vd_curwindow == vw) {
vd->vd_flags |= VDF_INVALID;
vt_resume_flush_timer(vd, 0);
}
callout_init(&vt_splash_cpu_callout, 1);
callout_reset(&vt_splash_cpu_callout, vt_splash_cpu_duration * hz,
vt_fini_logos, NULL);
out:
VT_UNLOCK(vd);
}
SYSINIT(vt_logos, SI_SUB_CPU + 1, SI_ORDER_ANY, vt_init_logos, NULL);
#endif /* DEV_SPLASH */