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authorThomas Bushnell <thomas@gnu.org>1997-02-25 21:28:37 +0000
committerThomas Bushnell <thomas@gnu.org>1997-02-25 21:28:37 +0000
commitf07a4c844da9f0ecae5bbee1ab94be56505f26f7 (patch)
tree12b07c7e578fc1a5f53dbfde2632408491ff2a70 /device/cons.h
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+/*
+ * Copyright (c) 1988-1994, The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ * Utah $Hdr: cons.h 1.10 94/12/14$
+ */
+
+struct consdev {
+#ifdef MACH_KERNEL
+ char *cn_name; /* name of device in dev_name_list */
+#endif
+ int (*cn_probe)(); /* probe hardware and fill in consdev info */
+ int (*cn_init)(); /* turn on as console */
+ int (*cn_getc)(); /* kernel getchar interface */
+ int (*cn_putc)(); /* kernel putchar interface */
+ dev_t cn_dev; /* major/minor of device */
+ short cn_pri; /* pecking order; the higher the better */
+};
+
+/* values for cn_pri - reflect our policy for console selection */
+#define CN_DEAD 0 /* device doesn't exist */
+#define CN_NORMAL 1 /* device exists but is nothing special */
+#define CN_INTERNAL 2 /* "internal" bit-mapped display */
+#define CN_REMOTE 3 /* serial interface with remote bit set */
+
+/* XXX */
+#define CONSMAJOR 0
+
+#define CONSBUFSIZE 1024
+
+#ifdef KERNEL
+extern struct consdev constab[];
+extern struct consdev *cn_tab;
+#endif