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b40ce4165d
Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
/*-
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* Copyright (c) 1998 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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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 as
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* the first lines of this file unmodified.
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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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*
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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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* $FreeBSD$
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*/
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#include "opt_vga.h"
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#ifndef VGA_NO_MODE_CHANGE
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/tty.h>
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#include <sys/kernel.h>
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#include <sys/fbio.h>
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#include <sys/consio.h>
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#include <machine/pc/vesa.h>
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#include <dev/fb/fbreg.h>
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#include <dev/syscons/syscons.h>
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static d_ioctl_t *prev_user_ioctl;
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static int
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vesa_ioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
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{
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scr_stat *scp;
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struct tty *tp;
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int mode;
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tp = dev->si_tty;
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if (!tp)
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return ENXIO;
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scp = SC_STAT(tp->t_dev);
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switch (cmd) {
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/* generic text modes */
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case SW_TEXT_132x25: case SW_TEXT_132x30:
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case SW_TEXT_132x43: case SW_TEXT_132x50:
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case SW_TEXT_132x60:
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if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
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return ENODEV;
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return sc_set_text_mode(scp, tp, cmd & 0xff, 0, 0, 0);
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/* text modes */
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case SW_VESA_C80x60:
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case SW_VESA_C132x25:
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case SW_VESA_C132x43:
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case SW_VESA_C132x50:
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case SW_VESA_C132x60:
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if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
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return ENODEV;
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mode = (cmd & 0xff) + M_VESA_BASE;
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return sc_set_text_mode(scp, tp, mode, 0, 0, 0);
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/* graphics modes */
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case SW_VESA_32K_320: case SW_VESA_64K_320:
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case SW_VESA_FULL_320:
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case SW_VESA_CG640x400:
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case SW_VESA_CG640x480:
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case SW_VESA_32K_640: case SW_VESA_64K_640:
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case SW_VESA_FULL_640:
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case SW_VESA_800x600: case SW_VESA_CG800x600:
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case SW_VESA_32K_800: case SW_VESA_64K_800:
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case SW_VESA_FULL_800:
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case SW_VESA_1024x768: case SW_VESA_CG1024x768:
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case SW_VESA_32K_1024: case SW_VESA_64K_1024:
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case SW_VESA_FULL_1024:
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case SW_VESA_1280x1024: case SW_VESA_CG1280x1024:
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case SW_VESA_32K_1280: case SW_VESA_64K_1280:
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case SW_VESA_FULL_1280:
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if (!(scp->sc->adp->va_flags & V_ADP_MODECHANGE))
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return ENODEV;
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mode = (cmd & 0xff) + M_VESA_BASE;
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return sc_set_graphics_mode(scp, tp, mode);
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}
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if (prev_user_ioctl)
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return (*prev_user_ioctl)(dev, cmd, data, flag, td);
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else
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return ENOIOCTL;
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}
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int
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vesa_load_ioctl(void)
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{
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if (prev_user_ioctl)
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return EBUSY;
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prev_user_ioctl = sc_user_ioctl;
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sc_user_ioctl = vesa_ioctl;
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return 0;
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}
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int
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vesa_unload_ioctl(void)
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{
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if (sc_user_ioctl != vesa_ioctl)
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return EBUSY;
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sc_user_ioctl = prev_user_ioctl;
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prev_user_ioctl = NULL;
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return 0;
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}
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#endif /* SC_NO_MODE_CHANGE */
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