Definition file for RSP (Radial Serial Protocol) used by DECtape II.

sys/arch/vax/include/rsp.h

@@ -0,0 +1,89 @@
+/*	$NetBSD: rsp.h,v 1.1 1996/02/17 18:14:50 ragge Exp $ */
+/*
+ * Copyright (c) 1995 Ludd, University of Lule}, Sweden.
+ * 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 at Ludd, University of 
+ *      Lule}, Sweden and its contributors.
+ * 4. 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 AUTHOR ``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 AUTHOR 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.
+ */
+
+
+/*
+ * The Radial Serial Protocol (RSP) that TU58 (DECtape II) uses
+ * is a strange animal that is sent over serial lines.
+ * Most packet types can match the struct rsp, but some can't (i.e. 
+ * data packets). 
+ * More about RSP can be read in Digital Peripherals Handbook, p. 92.
+ */
+
+struct rsp {
+	char	rsp_typ;	/* Packet type */
+	char	rsp_sz;		/* Packet size */
+	char	rsp_op;		/* Operation */
+	char	rsp_mod;	/* Modifier */
+	char	rsp_drv;	/* Tape drive number */
+	char	rsp_sw;		/* Switches */
+	char	rsp_xx1;	/* Unused, always zero */
+	char	rsp_xx2;	/* Unused, always zero */
+	short	rsp_cnt;	/* Byte count to transfer */
+	short	rsp_blk;	/* Block number */
+	short	rsp_sum;	/* Checksum of packet */
+};
+
+/* Types of packets */
+#define	RSP_TYP_DATA		001	/* DATA packet */
+#define	RSP_TYP_COMMAND		002	/* COMMAND packet */
+#define	RSP_TYP_INIT		004	/* INITIALIZE packet */
+#define	RSP_TYP_BOOT		010	/* BOOTSTRAP packet (PDP11) */
+#define	RSP_TYP_CONTINUE	020	/* CONTINUE packet */
+#define	RSP_TYP_XOFF		023	/* XOFF packet */
+
+/* Operation types */
+#define	RSP_OP_NOP		000	/* No operation */
+#define	RSP_OP_RESET		001	/* Reset */
+#define	RSP_OP_READ		002	/* Read data */
+#define	RSP_OP_WRITE		003	/* Write data */
+#define	RSP_OP_POS		005	/* Position tape */
+#define	RSP_OP_DIAG		007	/* internal diagnose */
+#define	RSP_OP_GSTAT		010	/* Get status */
+#define	RSP_OP_SSTAT		011	/* Set status */
+#define	RSP_OP_END		100	/* End packet */
+
+/* Modifier */
+#define	RSP_MOD_VERIFY		001	/* Verify read data */
+#define	RSP_MOD_OK		000	/* Success */
+#define	RSP_MOD_RETR		001	/* Success w/ retries */
+#define	RSP_MOD_FAIL		-1	/* Failed self-test */
+#define	RSP_MOD_PART		-2	/* Partial operation */
+#define	RSP_MOD_NET		-8	/* Non-existent tape drive */
+#define	RSP_MOD_NOC		-9	/* No cartridge */
+#define	RSP_MOD_WP		-11	/* Write protected */
+#define	RSP_MOD_DERR		-17	/* Data error */
+#define	RSP_MOD_SERR		-32	/* Seek error */
+#define	RSP_MOD_STOP		-33	/* Motor stopped */
+#define	RSP_MOD_INVAL		-48	/* Invalid opcode */
+#define	RSP_MOD_INVBLK		-55	/* Invalid bloch number */
+