Initial import, 0.1 + pk 0.2.4-B1

sys/dev/ic/nec765.h

@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may 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.
+ *
+ *	@(#)nec765.h	7.1 (Berkeley) 5/9/91
+ */
+
+/*
+ * Nec 765 floppy disc controller definitions
+ */
+
+/* Main status register */
+#define NE7_DAB	0x01	/* Diskette drive A is seeking, thus busy */
+#define NE7_DBB	0x02	/* Diskette drive B is seeking, thus busy */
+#define NE7_CB	0x10	/* Diskette Controller Busy */
+#define NE7_NDM	0x20	/* Diskette Controller in Non Dma Mode */
+#define NE7_DIO	0x40	/* Diskette Controller Data register I/O */
+#define NE7_RQM	0x80	/* Diskette Controller ReQuest for Master */
+
+/* Status register ST0 */
+#define NE7_ST0BITS	"\020\010invld\007abnrml\006seek_cmplt\005drv_chck\004drive_rdy\003top_head"
+
+/* Status register ST1 */
+#define NE7_ST1BITS	"\020\010end_of_cyl\006bad_crc\005data_overrun\003sec_not_fnd\002write_protect\001no_am"
+
+/* Status register ST2 */
+#define NE7_ST2BITS	"\020\007ctrl_mrk\006bad_crc\005wrong_cyl\004scn_eq\003scn_not_fnd\002bad_cyl\001no_dam"
+
+/* Status register ST3 */
+#define NE7_ST3BITS	"\020\010fault\007write_protect\006drdy\005tk0\004two_side\003side_sel\002"
+
+/* Commands */
+#define NE7CMD_SPECIFY	3	/*  specify drive parameters - requires unit
+					parameters byte */
+#define NE7CMD_SENSED	4	/*  sense drive - requires unit select byte */
+#define NE7CMD_WRITE	0xc5	/*  write - requires eight additional bytes */
+#define NE7CMD_READ	0xe6	/*  read - requires eight additional bytes */
+#define NE7CMD_FORMAT	0x4c	/*  format - requires five additional bytes */
+#define NE7CMD_RECAL	7	/*  recalibrate drive - requires
+					unit select byte */
+#define NE7CMD_SENSEI	8	/*  sense controller interrupt status */
+#define NE7CMD_SEEK	15	/*  seek drive - requires unit select byte
+					and new cyl byte */