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-rw-r--r--drivers/char/rio/route.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/char/rio/route.h b/drivers/char/rio/route.h
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+/****************************************************************************
+ ******* *******
+ ******* R O U T E H E A D E R
+ ******* *******
+ ****************************************************************************
+
+ Author : Ian Nandhra / Jeremy Rolls
+ Date :
+
+ *
+ * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ Version : 0.01
+
+
+ Mods
+ ----------------------------------------------------------------------------
+ Date By Description
+ ----------------------------------------------------------------------------
+
+ ***************************************************************************/
+
+#ifndef _route_h
+#define _route_h
+
+#ifdef SCCS_LABELS
+#ifndef lint
+/* static char *_rio_route_h_sccs = "@(#)route.h 1.3"; */
+#endif
+#endif
+
+#define MAX_LINKS 4
+#define MAX_NODES 17 /* Maximum nodes in a subnet */
+#define NODE_BYTES ((MAX_NODES / 8) + 1) /* Number of bytes needed for
+ 1 bit per node */
+#define ROUTE_DATA_SIZE (NODE_BYTES + 2) /* Number of bytes for complete
+ info about cost etc. */
+#define ROUTES_PER_PACKET ((PKT_MAX_DATA_LEN -2)/ ROUTE_DATA_SIZE)
+ /* Number of nodes we can squeeze
+ into one packet */
+#define MAX_TOPOLOGY_PACKETS (MAX_NODES / ROUTES_PER_PACKET + 1)
+/************************************************
+ * Define the types of command for the ROUTE RUP.
+ ************************************************/
+#define ROUTE_REQUEST 0 /* Request an ID */
+#define ROUTE_FOAD 1 /* Kill the RTA */
+#define ROUTE_ALREADY 2 /* ID given already */
+#define ROUTE_USED 3 /* All ID's used */
+#define ROUTE_ALLOCATE 4 /* Here it is */
+#define ROUTE_REQ_TOP 5 /* I bet you didn't expect....
+ the Topological Inquisition */
+#define ROUTE_TOPOLOGY 6 /* Topology request answered FD */
+/*******************************************************************
+ * Define the Route Map Structure
+ *
+ * The route map gives a pointer to a Link Structure to use.
+ * This allows Disconnected Links to be checked quickly
+ ******************************************************************/
+typedef struct COST_ROUTE COST_ROUTE;
+struct COST_ROUTE {
+ unsigned char cost; /* Cost down this link */
+ unsigned char route[NODE_BYTES]; /* Nodes thorough this route */
+ } ;
+
+typedef struct ROUTE_STR ROUTE_STR ;
+struct ROUTE_STR {
+ COST_ROUTE cost_route[MAX_LINKS];
+ /* cost / route for this link */
+ ushort favoured; /* favoured link */
+ } ;
+
+
+#define NO_LINK (short) 5 /* Link unattached */
+#define ROUTE_NO_ID (short) 100 /* No Id */
+#define ROUTE_DISCONNECT (ushort) 0xff /* Not connected */
+#define ROUTE_INTERCONNECT (ushort) 0x40 /* Sub-net interconnect */
+
+
+#define SYNC_RUP (ushort) 255
+#define COMMAND_RUP (ushort) 254
+#define ERROR_RUP (ushort) 253
+#define POLL_RUP (ushort) 252
+#define BOOT_RUP (ushort) 251
+#define ROUTE_RUP (ushort) 250
+#define STATUS_RUP (ushort) 249
+#define POWER_RUP (ushort) 248
+
+#define HIGHEST_RUP (ushort) 255 /* Set to Top one */
+#define LOWEST_RUP (ushort) 248 /* Set to bottom one */
+
+#endif
+
+/*********** end of file ***********/
+