Add VESA support to syscons.

Kazu writes:

The VESA support code requires vm86 support. Make sure your kernel
configuration file has the following line.
        options "VM86"
If you want to statically link the VESA support code to the kernel,
add the following option to the kernel configuration file.
        options "VESA"

The vidcontrol command now accepts the following video mode names:
VESA_132x25, VESA_132x43, VESA_132x50, VESA_132x60, VESA_800x600

The VESA_800x600 mode is a raster display mode. The 80x25 text will
be displayed on the 800x600 screen. Useful for some laptop computers.

vidcontrol accepts the new `-i <info>' option, where <info> must be
either `adapter' or `mode'.  When the `-i adapter' option is given,
vidcontrol will print basic information (not much) on the video
adapter. When the `-i mode' option is specified, vidcontrol will
list video modes which are actually supported by the video adapter.

Submitted by:   Kazutaka YOKOTA yokota@FreeBSD.ORG

1 files changed, 150 insertions, 0 deletions

diff --git a/sys/dev/syscons/scvesactl.c b/sys/dev/syscons/scvesactl.c
new file mode 100644
index 0000000..9678177
--- /dev/null
+++ b/sys/dev/syscons/scvesactl.c
@@ -0,0 +1,150 @@
+/*-
+ * Copyright (c) 1998 Kazutaka YOKOTA (yokota@zodiac.mech.utsunomiya-u.ac.jp)
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote 
+ *    products derived from this software without specific prior written 
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * $Id$
+ */
+
+#include "sc.h"
+#include "opt_vesa.h"
+#include "opt_vm86.h"
+
+#if (NSC > 0 && defined(VESA) && defined(VM86)) || defined(VESA_MODULE)
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/tty.h>
+#include <sys/kernel.h>
+
+#include <machine/apm_bios.h>
+#include <machine/console.h>
+#include <machine/pc/vesa.h>
+
+#include <i386/isa/videoio.h>
+#include <i386/isa/syscons.h>
+
+static int (*prev_user_ioctl)(dev_t dev, int cmd, caddr_t data, int flag, 
+			      struct proc *p);
+
+extern struct tty *scdevtotty(dev_t dev);
+
+int
+vesa_ioctl(dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
+{
+	scr_stat *scp;
+	struct tty *tp;
+	video_info_t info;
+	video_adapter_t *adp;
+	int mode;
+	int error;
+	int s;
+
+	tp = scdevtotty(dev);
+	if (!tp)
+		return ENXIO;
+	scp = sc_get_scr_stat(tp->t_dev);
+
+	switch (cmd) {
+	case SW_VESA_USER:
+
+		mode = (int)data;
+		if ((*biosvidsw.get_info)(scp->adp, mode, &info))
+			return ENODEV;
+		if (info.vi_flags & V_INFO_GRAPHICS)
+			goto vesa_graphics;
+		else
+			goto vesa_text;
+
+	/* text modes */
+	case SW_VESA_C80x60:
+	case SW_VESA_C132x25:
+	case SW_VESA_C132x43:
+	case SW_VESA_C132x50:
+	case SW_VESA_C132x60:
+		adp = get_adapter(scp);
+		if (!(adp->va_flags & V_ADP_MODECHANGE))
+			return ENODEV;
+		mode = (cmd & 0xff) + M_VESA_BASE;
+vesa_text:
+		return sc_set_text_mode(scp, tp, mode, 0, 0, 0);
+
+	/* graphics modes */
+	case SW_VESA_32K_320: 	case SW_VESA_64K_320: 
+	case SW_VESA_FULL_320:
+
+	case SW_VESA_CG640x400:
+
+	case SW_VESA_CG640x480:
+	case SW_VESA_32K_640:	case SW_VESA_64K_640:
+	case SW_VESA_FULL_640:
+
+	case SW_VESA_800x600:	case SW_VESA_CG800x600:
+	case SW_VESA_32K_800:	case SW_VESA_64K_800:
+	case SW_VESA_FULL_800:
+
+	case SW_VESA_1024x768:	case SW_VESA_CG1024x768:
+	case SW_VESA_32K_1024:	case SW_VESA_64K_1024:
+	case SW_VESA_FULL_1024:
+
+	case SW_VESA_1280x1024:	case SW_VESA_CG1280x1024:
+	case SW_VESA_32K_1280:	case SW_VESA_64K_1280:
+	case SW_VESA_FULL_1280:
+		adp = get_adapter(scp);
+		if (!(adp->va_flags & V_ADP_MODECHANGE))
+			return ENODEV;
+		mode = (cmd & 0xff) + M_VESA_BASE;
+vesa_graphics:
+		return sc_set_graphics_mode(scp, tp, mode);
+	}
+
+	if (prev_user_ioctl)
+		return (*prev_user_ioctl)(dev, cmd, data, flag, p);
+	else
+		return ENOIOCTL;
+}
+
+int
+vesa_load_ioctl(void)
+{
+	if (prev_user_ioctl)
+		return EBUSY;
+	prev_user_ioctl = sc_user_ioctl;
+	sc_user_ioctl = vesa_ioctl;
+	return 0;
+}
+
+int
+vesa_unload_ioctl(void)
+{
+	if (sc_user_ioctl != vesa_ioctl)
+		return EBUSY;
+	sc_user_ioctl = prev_user_ioctl;
+	prev_user_ioctl = NULL;
+	return 0;
+}
+
+#endif /* (NSC > 0 && VESA && VM86) || VESA_MODULE */