ce834215a7
facilitate the new saver loading/unloading notification interface in syscons. daemon_saver: - M_NOWAIT was wrong, since NULL returns are not handled. Just use M_WAITOK. - use `ostype' instead of hard-coded "FreeBSD". Now there is no more hard-coded string! (But, who will run this screen saver on other OS?!) - put macros and data declarations in a consistent order. - -DDEAMON_ONLY and -DSHOW_HOSTNAME options added in the previous commit are removed. Options of this kind can go stale and no one notices because no one uses them. DEAMON_ONLY is just removed. SHOW_HOSTNAME is made default. snake_saver: - use `ostype' and `osrelease' as in the daemon saver. The string changes slightly - there was a hyphen after "FreeBSD"; now there is a space. (It is consistent with uname -a, like the daemon server already is.) all screen savers: - Use the new add_scrn_saver()/remove_scrn_saver() in syscons.c to declare loading/unloading of a screen saver. Removed reference to `current_saver' and the variable `old_saver' as they are not necessary anymore. - The blank, fade and green screen savers manipulate VGA registers. Module loading should fail for non-VGA cards. - `scrn_blanked' is consistently treated as a number/counter rather than boolean. - Some savers touch `scp->start' and `scp->end' to force entire screen update when stopping themselves. This is unnecessary now because syscons.c takes care of that. - cleared up many unused or unnecessary #include statements. - Removed -DLKM from Makefiles. YOU NEED TO RECOMPILE BOTH SCREEN SAVERS AND KERNEL AS OF THIS CHANGE.
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/*-
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* Copyright (c) 1995 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: green_saver.c,v 1.9 1997/04/06 10:49:13 dufault Exp $
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/exec.h>
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#include <sys/sysent.h>
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#include <sys/lkm.h>
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#include <i386/isa/isa.h>
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#include <saver.h>
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MOD_MISC(green_saver);
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static void
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green_saver(int blank)
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{
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u_char val;
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if (blank) {
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scrn_blanked = 1;
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outb(TSIDX, 0x01); val = inb(TSREG);
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outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
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outb(crtc_addr, 0x17); val = inb(crtc_addr + 1);
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outb(crtc_addr + 1, val & ~0x80);
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}
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else {
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outb(TSIDX, 0x01); val = inb(TSREG);
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outb(TSIDX, 0x01); outb(TSREG, val & 0xDF);
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outb(crtc_addr, 0x17); val = inb(crtc_addr + 1);
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outb(crtc_addr + 1, val | 0x80);
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scrn_blanked = 0;
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}
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}
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static int
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green_saver_load(struct lkm_table *lkmtp, int cmd)
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{
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if (!crtc_vga)
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return EINVAL;
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return add_scrn_saver(green_saver);
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}
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static int
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green_saver_unload(struct lkm_table *lkmtp, int cmd)
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{
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return remove_scrn_saver(green_saver);
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}
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int
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green_saver_mod(struct lkm_table *lkmtp, int cmd, int ver)
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{
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MOD_DISPATCH(green_saver, lkmtp, cmd, ver,
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green_saver_load, green_saver_unload, lkm_nullcmd);
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}
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