Sync with NetBSD 961207

1 files changed, 145 insertions, 0 deletions

diff --git a/sys/dev/isa/vga_isa.c b/sys/dev/isa/vga_isa.c
new file mode 100644
index 00000000000..615f16590a5
--- /dev/null
+++ b/sys/dev/isa/vga_isa.c
@@ -0,0 +1,145 @@
+/*	$NetBSD: vga_isa.c,v 1.4 1996/12/05 01:39:32 cgd Exp $	*/
+
+/*
+ * Copyright (c) 1995, 1996 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Chris G. Demetriou
+ * 
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#include <machine/autoconf.h>
+#include <machine/pte.h>
+
+#include <dev/isa/isavar.h>
+
+#include <alpha/common/vgavar.h>
+#include <alpha/isa/vga_isavar.h>
+
+struct vga_isa_softc {
+	struct device sc_dev; 
+ 
+	struct vga_config *sc_vc;	/* VGA configuration */ 
+};
+
+#ifdef __BROKEN_INDIRECT_CONFIG
+int	vga_isa_match __P((struct device *, void *, void *));
+#else
+int	vga_isa_match __P((struct device *, struct cfdata *, void *));
+#endif
+void	vga_isa_attach __P((struct device *, struct device *, void *));
+
+struct cfattach vga_isa_ca = {
+	sizeof(struct vga_isa_softc), vga_isa_match, vga_isa_attach,
+};
+
+int vga_isa_console_tag;			/* really just a boolean. */
+struct vga_config vga_isa_console_vc;
+
+int
+vga_isa_match(parent, match, aux)
+	struct device *parent;
+#ifdef __BROKEN_INDIRECT_CONFIG
+	void *match;
+#else
+	struct cfdata *match;
+#endif
+	void *aux;
+{
+	struct isa_attach_args *ia = aux;
+	int rv;
+
+	/* If values are hardwired to something that they can't be, punt. */
+	if (ia->ia_iobase != IOBASEUNK || /* ia->ia_iosize != 0 || XXX isa.c */
+	    (ia->ia_maddr != MADDRUNK && ia->ia_maddr != 0xb8000) ||
+	    (ia->ia_msize != 0 && ia->ia_msize != 0x8000) ||
+	    ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
+		return (0);
+
+	if (vga_isa_console_tag)
+		return (1);
+
+	rv = vga_common_probe(ia->ia_iot, ia->ia_memt);
+
+	if (rv) {
+		ia->ia_iobase = 0x3b0;
+		ia->ia_iosize = 0x30;
+		ia->ia_maddr = 0xb8000;
+		ia->ia_msize = 0x8000;
+	}
+	return (rv);
+}
+
+void
+vga_isa_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct isa_attach_args *ia = aux;
+	struct vga_isa_softc *sc = (struct vga_isa_softc *)self;
+	struct vga_config *vc;
+	int console;
+
+	console = vga_isa_console_tag;
+	if (console)
+		vc = sc->sc_vc = &vga_isa_console_vc;
+	else {
+		vc = sc->sc_vc = (struct vga_config *)
+		    malloc(sizeof(struct vga_config), M_DEVBUF, M_WAITOK);
+
+		/* set up bus-independent VGA configuration */
+		vga_common_setup(ia->ia_iot, ia->ia_memt, vc);
+	}
+
+	printf("\n");
+
+	vga_wscons_attach(self, vc, console);
+}
+
+int
+vga_isa_console_match(iot, memt)
+	bus_space_tag_t iot, memt;
+{
+
+	return (vga_common_probe(iot, memt));
+}
+
+void
+vga_isa_console_attach(iot, memt)
+	bus_space_tag_t iot, memt;
+{
+	struct vga_config *vc = &vga_isa_console_vc;
+
+	/* for later recognition */
+	vga_isa_console_tag = 1;
+
+	/* set up bus-independent VGA configuration */
+	vga_common_setup(iot, memt, vc);
+
+	vga_wscons_console(vc);
+}