/*
** -----------------------------------------------------------------------------
**
**  Perle Specialix driver for Linux
**  Ported from existing RIO Driver for SCO sources.
 *
 *  (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.
**
**	Module		: riotable.c
**	SID		: 1.2
**	Last Modified	: 11/6/98 10:33:47
**	Retrieved	: 11/6/98 10:33:50
**
**  ident @(#)riotable.c	1.2
**
** -----------------------------------------------------------------------------
*/
#ifdef SCCS_LABELS
static char *_riotable_c_sccs_ = "@(#)riotable.c	1.2";
#endif

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/string.h>

#include <asm/io.h>
#include <asm/system.h>
#include <asm/string.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>

#include <linux/termios.h>
#include <linux/serial.h>

#include <linux/generic_serial.h>


#include "linux_compat.h"
#include "rio_linux.h"
#include "typdef.h"
#include "pkt.h"
#include "daemon.h"
#include "rio.h"
#include "riospace.h"
#include "top.h"
#include "cmdpkt.h"
#include "map.h"
#include "riotypes.h"
#include "rup.h"
#include "port.h"
#include "riodrvr.h"
#include "rioinfo.h"
#include "func.h"
#include "errors.h"
#include "pci.h"

#include "parmmap.h"
#include "unixrup.h"
#include "board.h"
#include "host.h"
#include "error.h"
#include "phb.h"
#include "link.h"
#include "cmdblk.h"
#include "route.h"
#include "control.h"
#include "cirrus.h"
#include "rioioctl.h"
#include "param.h"
#include "list.h"
#include "sam.h"
#include "protsts.h"

/*
** A configuration table has been loaded. It is now up to us
** to sort it out and use the information contained therein.
*/
int
RIONewTable(p)
struct rio_info *	p;
{
	int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
	struct Map *MapP;
	struct Map *HostMapP;
	struct Host *HostP;

	char *cptr;

	/*
	** We have been sent a new table to install. We need to break
	** it down into little bits and spread it around a bit to see
	** what we have got.
	*/
	/*
	** Things to check:
	** (things marked 'xx' aren't checked any more!)
	** (1)	That there are no booted Hosts/RTAs out there.
	** (2)	That the names are properly formed
	** (3)	That blank entries really are.
	** xx (4)	That hosts mentioned in the table actually exist. xx
	** (5)	That the IDs are unique (per host).
	** (6)	That host IDs are zero
	** (7)	That port numbers are valid
	** (8)	That port numbers aren't duplicated
	** (9)	That names aren't duplicated
	** xx (10) That hosts that actually exist are mentioned in the table. xx
	*/
	rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n"); 
	if ( p->RIOSystemUp ) {		/* (1) */
		p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
		return -EBUSY;
	}

	p->RIOError.Error = NOTHING_WRONG_AT_ALL;
	p->RIOError.Entry = -1;
	p->RIOError.Other = -1;

	for ( Entry=0; Entry<TOTAL_MAP_ENTRIES; Entry++ ) {
		MapP = &p->RIOConnectTable[Entry];
		if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
			rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
			cptr = MapP->Name;		/* (2) */
			cptr[MAX_NAME_LEN-1]='\0';
			if ( cptr[0]=='\0' ) {
				bcopy(MapP->RtaUniqueNum?"RTA	NN":"HOST NN",MapP->Name,8);
				MapP->Name[5] = '0'+Entry/10;
				MapP->Name[6] = '0'+Entry%10;
			}
			while ( *cptr ) {
				if ( *cptr<' ' || *cptr>'~' ) {
					p->RIOError.Error = BAD_CHARACTER_IN_NAME;
					p->RIOError.Entry = Entry;
					return -ENXIO;
				}
				cptr++;
			}
		}

		/*
		** If the entry saved was a tentative entry then just forget
		** about it.
		*/
		if ( MapP->Flags & SLOT_TENTATIVE ) {
			MapP->HostUniqueNum = 0;
			MapP->RtaUniqueNum = 0;
			continue;
		}

		rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
		if ( !MapP->RtaUniqueNum && !MapP->HostUniqueNum ) { /* (3) */
			if ( MapP->ID || MapP->SysPort || MapP->Flags ) {
				rio_dprintk (RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n",MapP->Name);
				p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			rio_dprintk (RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
			continue;
		}

		rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
		for ( Host=0; Host<p->RIONumHosts; Host++ ) { /* (4) */
			if ( p->RIOHosts[Host].UniqueNum==MapP->HostUniqueNum ) {
				HostP = &p->RIOHosts[Host];
				/*
				** having done the lookup, we don't really want to do
				** it again, so hang the host number in a safe place
				*/
				MapP->Topology[0].Unit = Host;
				break;
			}
		}

		if ( Host >= p->RIONumHosts ) {
			rio_dprintk (RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n",
									MapP->Name, MapP->HostUniqueNum);
			MapP->HostUniqueNum = 0;
			/* MapP->RtaUniqueNum	= 0; */
			/* MapP->ID			= 0; */
			/* MapP->Flags		 = 0; */
			/* MapP->SysPort		 = 0; */
			/* MapP->Name[0]		 = 0; */
			continue;
		}

		rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n"); 
		if ( MapP->RtaUniqueNum ) { /* (5) */
			if ( !MapP->ID ) {
				rio_dprintk (RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n",
							MapP->Name);
				p->RIOError.Error		 = ZERO_RTA_ID;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			if ( MapP->ID > MAX_RUP ) {
				rio_dprintk (RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n",
							MapP->Name, MapP->ID);
				p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			for ( SubEnt=0; SubEnt<Entry; SubEnt++ ) {
				if ( MapP->HostUniqueNum == 
						p->RIOConnectTable[SubEnt].HostUniqueNum && 
						MapP->ID == p->RIOConnectTable[SubEnt].ID ) {
					rio_dprintk (RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n",
							MapP->Name, p->RIOConnectTable[SubEnt].Name);
					p->RIOError.Error = DUPLICATED_RTA_ID;
					p->RIOError.Entry = Entry;
					p->RIOError.Other = SubEnt;
					return -ENXIO;
				}
				/*
				** If the RtaUniqueNum is the same, it may be looking at both
				** entries for a 16 port RTA, so check the ids
				*/
				if ((MapP->RtaUniqueNum == 
						p->RIOConnectTable[SubEnt].RtaUniqueNum)
				 		&& (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
					rio_dprintk (RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n",MapP->Name);
					rio_dprintk (RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n",
										p->RIOConnectTable[SubEnt].Name);
					p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
					p->RIOError.Entry = Entry;
					p->RIOError.Other = SubEnt;
					return -ENXIO;
				}
			}
			rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n"); 
			/* (7a) */
			if ((MapP->SysPort != NO_PORT)&&(MapP->SysPort % PORTS_PER_RTA)) {
				rio_dprintk (RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n",
					(int)MapP->SysPort,MapP->Name, PORTS_PER_RTA);
				p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n"); 
			/* (7b) */
			if ((MapP->SysPort != NO_PORT)&&(MapP->SysPort >= RIO_PORTS)) {
				rio_dprintk (RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n",
							(int)MapP->SysPort, MapP->Name);
				p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			for ( SubEnt=0; SubEnt<Entry; SubEnt++ ) {
				if ( p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT )
						continue;
				if ( p->RIOConnectTable[SubEnt].RtaUniqueNum ) {
					rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n"); 
					/* (8) */
					if ( (MapP->SysPort != NO_PORT) && (MapP->SysPort == 
									p->RIOConnectTable[SubEnt].SysPort) ) {
						rio_dprintk (RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n",
							MapP->Name, p->RIOConnectTable[SubEnt].Name,
							(int)MapP->SysPort);
						p->RIOError.Error = TTY_NUMBER_IN_USE;
						p->RIOError.Entry = Entry;
						p->RIOError.Other = SubEnt;
						return -ENXIO;
					}
					rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n"); 
					if (strcmp(MapP->Name,
							p->RIOConnectTable[SubEnt].Name)==0 && !(MapP->Flags & RTA16_SECOND_SLOT)) { /* (9) */
						rio_dprintk (RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
						p->RIOError.Error = NAME_USED_TWICE;
						p->RIOError.Entry = Entry;
						p->RIOError.Other = SubEnt;
						return -ENXIO;
					}
				}
			}
		}
		else { /* (6) */
			rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n"); 
			if ( MapP->ID ) {
				rio_dprintk (RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n",
					MapP->Name);
				p->RIOError.Error = HOST_ID_NOT_ZERO;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
			if ( MapP->SysPort != NO_PORT ) {
				rio_dprintk (RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n",
					MapP->Name);
				p->RIOError.Error = HOST_SYSPORT_BAD;
				p->RIOError.Entry = Entry;
				return -ENXIO;
			}
		}
	}

	/*
	** wow! if we get here then it's a goody!
	*/

	/*
	** Zero the (old) entries for each host...
	*/
	for ( Host=0; Host<RIO_HOSTS; Host++ ) {
		for ( Entry=0; Entry<MAX_RUP; Entry++ ) {
			bzero((caddr_t)&p->RIOHosts[Host].Mapping[Entry], 
											sizeof(struct Map));
		}
		bzero((caddr_t)&p->RIOHosts[Host].Name[0],
								sizeof(p->RIOHosts[Host].Name) );
	}

	/*
	** Copy in the new table entries
	*/
	for ( Entry=0; Entry< TOTAL_MAP_ENTRIES; Entry++ ) {
		rio_dprintk (RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
		MapP = &p->RIOConnectTable[Entry];

		/*
		** Now, if it is an empty slot ignore it!
		*/
		if ( MapP->HostUniqueNum==0 )
			continue;

		/*
		** we saved the host number earlier, so grab it back
		*/
		HostP = &p->RIOHosts[MapP->Topology[0].Unit];

		/*
		** If it is a host, then we only need to fill in the name field.
		*/
		if ( MapP->ID==0 ) {
			rio_dprintk (RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
			bcopy(MapP->Name,HostP->Name,MAX_NAME_LEN);
			continue;
		}

		/*
		** Its an RTA entry, so fill in the host mapping entries for it
		** and the port mapping entries. Notice that entry zero is for
		** ID one.
		*/
		HostMapP = &HostP->Mapping[MapP->ID-1];

		if (MapP->Flags & SLOT_IN_USE) {
			rio_dprintk (RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
			/*
			** structure assign, then sort out the bits we shouldn't have done
			*/
			*HostMapP = *MapP;

			HostMapP->Flags = SLOT_IN_USE;
			if (MapP->Flags & RTA16_SECOND_SLOT)
				HostMapP->Flags |= RTA16_SECOND_SLOT;

			RIOReMapPorts(p, HostP, HostMapP );
		}
		else {
			rio_dprintk (RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
		}
	}

	for ( Entry=0; Entry< TOTAL_MAP_ENTRIES; Entry++ ) {
		p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
	}

	for ( Host=0; Host<p->RIONumHosts; Host++ ) {
		for ( SubEnt=0; SubEnt<LINKS_PER_UNIT; SubEnt++ ) {
			p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
			p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
		}
		for ( Entry=0; Entry<MAX_RUP; Entry++ ) {
			for ( SubEnt=0; SubEnt<LINKS_PER_UNIT; SubEnt++ ) {
				p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = 
								ROUTE_DISCONNECT;
				p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = 
								NO_LINK;
			}
		}
		if ( !p->RIOHosts[Host].Name[0] ) {
			bcopy("HOST 1",p->RIOHosts[Host].Name,7);
			p->RIOHosts[Host].Name[5] += Host;
		}
		/*
		** Check that default name assigned is unique.
		*/
		Host1 = Host;
		NameIsUnique = 0;
		while (!NameIsUnique) {
			NameIsUnique = 1;
			for ( Host2=0; Host2<p->RIONumHosts; Host2++ ) {
				if (Host2 == Host)
					continue;
				if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
									 == 0) {
					NameIsUnique = 0;
					Host1++;
					if (Host1 >= p->RIONumHosts)
						Host1 = 0;
					p->RIOHosts[Host].Name[5] = '1' + Host1;
				}
			}
		}
		/*
		** Rename host if name already used.
		*/
		if (Host1 != Host)
		{
			rio_dprintk (RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
			bcopy("HOST 1",p->RIOHosts[Host].Name,7);
			p->RIOHosts[Host].Name[5] += Host1;
		}
		rio_dprintk (RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
	}
	return 0;
}

/*
** User process needs the config table - build it from first
** principles.
*/
int
RIOApel(p)
struct rio_info *	p;
{
	int Host;
	int link;
	int Rup;
	int Next = 0;
	struct Map *MapP;
	struct Host *HostP;
	long oldspl;

	disable(oldspl);		/* strange but true! */
 
	rio_dprintk (RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");

	bzero((caddr_t)&p->RIOConnectTable[0], 
					sizeof(struct Map) * TOTAL_MAP_ENTRIES );

	for ( Host=0; Host<RIO_HOSTS; Host++ ) {
		rio_dprintk (RIO_DEBUG_TABLE, "Processing host %d\n", Host);
		HostP = &p->RIOHosts[Host];
		MapP = &p->RIOConnectTable[Next++];
		MapP->HostUniqueNum = HostP->UniqueNum;
		if ( (HostP->Flags & RUN_STATE) != RC_RUNNING )
			continue;
		MapP->RtaUniqueNum = 0;
		MapP->ID = 0;
		MapP->Flags = SLOT_IN_USE;
		MapP->SysPort = NO_PORT;
		for ( link=0; link<LINKS_PER_UNIT; link++ )
			MapP->Topology[link] = HostP->Topology[link];
		bcopy(HostP->Name,MapP->Name,MAX_NAME_LEN);
		for ( Rup=0; Rup<MAX_RUP; Rup++ ) {
			if ( HostP->Mapping[Rup].Flags & (SLOT_IN_USE|SLOT_TENTATIVE) ) {
				p->RIOConnectTable[Next] = HostP->Mapping[Rup];
				if ( HostP->Mapping[Rup].Flags & SLOT_IN_USE)
					p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
				if ( HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
					p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
				if ( HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT )
					p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
				Next++;
			}
		}
	}
	restore(oldspl);
	return 0;
}

/*
** config.rio has taken a dislike to one of the gross maps entries.
** if the entry is suitably inactive, then we can gob on it and remove
** it from the table.
*/
int
RIODeleteRta(p, MapP)
struct rio_info *p;
struct Map *MapP;
{
	int host, entry, port, link;
	int SysPort;
	struct Host *HostP;
	struct Map *HostMapP;
	struct Port *PortP;
	int work_done = 0;
	unsigned long lock_flags, sem_flags;

	rio_dprintk (RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n",
								MapP->HostUniqueNum, MapP->RtaUniqueNum);

	for ( host=0; host < p->RIONumHosts; host++ ) {
		HostP = &p->RIOHosts[host];

		rio_spin_lock_irqsave( &HostP->HostLock, lock_flags );

		if ( (HostP->Flags & RUN_STATE) != RC_RUNNING ) {
			rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
			continue;
		}

		for ( entry=0; entry<MAX_RUP; entry++ ) {
			if ( MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum ) {
				HostMapP = &HostP->Mapping[entry];
				rio_dprintk (RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", 
						entry, HostP->Name);

				/*
				** Check all four links of the unit are disconnected
				*/
				for ( link=0; link< LINKS_PER_UNIT; link++ ) {
					if ( HostMapP->Topology[link].Unit != ROUTE_DISCONNECT ) {
						rio_dprintk (RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
						p->RIOError.Error = UNIT_IS_IN_USE;
						rio_spin_unlock_irqrestore( &HostP->HostLock, lock_flags);
						return -EBUSY;
					}
				}
				/*
				** Slot has been allocated, BUT not booted/routed/
				** connected/selected or anything else-ed
				*/
				SysPort = HostMapP->SysPort;

				if ( SysPort != NO_PORT ) {
					for (port=SysPort; port < SysPort+PORTS_PER_RTA; port++) {
						PortP = p->RIOPortp[port];
						rio_dprintk (RIO_DEBUG_TABLE, "Unmap port\n");

						rio_spin_lock_irqsave( &PortP->portSem, sem_flags );

						PortP->Mapped = 0;

						if ( PortP->State & (RIO_MOPEN|RIO_LOPEN) ) {

							rio_dprintk (RIO_DEBUG_TABLE, "Gob on port\n");
							PortP->TxBufferIn = PortP->TxBufferOut = 0;
							/* What should I do 
							wakeup( &PortP->TxBufferIn );
							wakeup( &PortP->TxBufferOut);
							*/
							PortP->InUse = NOT_INUSE;
							/* What should I do 
							wakeup( &PortP->InUse );
							signal(PortP->TtyP->t_pgrp,SIGKILL);
							ttyflush(PortP->TtyP,(FREAD|FWRITE));
							*/
							PortP->State |= RIO_CLOSING | RIO_DELETED;
						}

						/*
						** For the second slot of a 16 port RTA, the
						** driver needs to reset the changes made to
						** the phb to port mappings in RIORouteRup.
						*/
						if (PortP->SecondBlock) {
							ushort dest_unit = HostMapP->ID;
							ushort dest_port = port - SysPort;
							WORD	 *TxPktP;
							PKT	*Pkt;

							for (TxPktP = PortP->TxStart;
								TxPktP <= PortP->TxEnd; TxPktP++) {
								/*
								** *TxPktP is the pointer to the
								** transmit packet on the host card.
								** This needs to be translated into
								** a 32 bit pointer so it can be
								** accessed from the driver.
								*/
								Pkt = (PKT *) RIO_PTR(HostP->Caddr,
								 	RWORD(*TxPktP));
								rio_dprintk (RIO_DEBUG_TABLE, 
						"Tx packet (%x) destination: Old %x:%x New %x:%x\n",
								 *TxPktP, Pkt->dest_unit,
								 Pkt->dest_port, dest_unit, dest_port);
								WWORD(Pkt->dest_unit, dest_unit);
								WWORD(Pkt->dest_port, dest_port);
							}
							rio_dprintk (RIO_DEBUG_TABLE, 
						"Port %d phb destination: Old %x:%x New %x:%x\n",
							 port, PortP->PhbP->destination & 0xff,
							 (PortP->PhbP->destination >> 8) & 0xff,
							 dest_unit, dest_port);
							WWORD(PortP->PhbP->destination,
							 dest_unit + (dest_port << 8));
						}
						rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
					}
				}
				rio_dprintk (RIO_DEBUG_TABLE, "Entry nulled.\n");
				bzero((char *)HostMapP,sizeof(struct Map));
				work_done++;
			}
		}
		rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
	}

	/* XXXXX lock me up */
	for ( entry=0; entry< TOTAL_MAP_ENTRIES; entry++ ) {
		if ( p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum ) {
			bzero((char *)&p->RIOSavedTable[entry],sizeof(struct Map));
			work_done++;
		}
		if ( p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum ) {
			bzero((char *)&p->RIOConnectTable[entry],sizeof(struct Map));
			work_done++;
		}
	}
	if ( work_done )
		return 0;

	rio_dprintk (RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
	p->RIOError.Error = COULDNT_FIND_ENTRY;
	return -ENXIO;
}

int RIOAssignRta( struct rio_info *p, struct Map *MapP )
{
    int host;
    struct Map *HostMapP;
    char *sptr;
    int	link;


    rio_dprintk (RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n",
				MapP->HostUniqueNum,MapP->RtaUniqueNum,
				MapP->ID, (int)MapP->SysPort);

    if ((MapP->ID != (ushort)-1) &&
	((int)MapP->ID < (int)1 || (int)MapP->ID > MAX_RUP ))
    {
	rio_dprintk (RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
	p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
	return -EINVAL;
    }
    if (MapP->RtaUniqueNum == 0)
    {
	rio_dprintk (RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
	p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
	return -EINVAL;
    }
    if ( (MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA) )
    {
	rio_dprintk (RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n",(int)MapP->SysPort,PORTS_PER_RTA);
	p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
	return -EINVAL;
    }
    if ( (MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS) )
    {
	rio_dprintk (RIO_DEBUG_TABLE, "Port %d not valid!\n",(int)MapP->SysPort);
	p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
	return -EINVAL;
    }

    /*
    ** Copy the name across to the map entry.
    */
    MapP->Name[MAX_NAME_LEN-1] = '\0';
    sptr = MapP->Name;
    while ( *sptr )
    {
    if ( *sptr<' ' || *sptr>'~' )
    {
	rio_dprintk (RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
	p->RIOError.Error = BAD_CHARACTER_IN_NAME;
	return -EINVAL;
    }
    sptr++;
    }

    for ( host=0; host < p->RIONumHosts; host++ )
    {
	if ( MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum )
	{
	    if ( (p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING )
	    {
		p->RIOError.Error = HOST_NOT_RUNNING;
		return -ENXIO;
	    }

	    /*
	    ** Now we have a host we need to allocate an ID
	    ** if the entry does not already have one.
	    */
	    if (MapP->ID == (ushort)-1)
	    {
		int nNewID;

		rio_dprintk (RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n",
		      MapP->Name);
		/*
		** The idea here is to allow RTA's to be assigned
		** before they actually appear on the network.
		** This allows the addition of RTA's without having
		** to plug them in.
		** What we do is:
		**  - Find a free ID and allocate it to the RTA.
		**  - If this map entry is the second half of a
		**    16 port entry then find the other half and
		**    make sure the 2 cross reference each other.
		*/
		if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0)
		{
		    p->RIOError.Error = COULDNT_FIND_ENTRY;
		    return -EBUSY;
		}
		MapP->ID = (ushort)nNewID + 1;
		rio_dprintk (RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
		HostMapP = &p->RIOHosts[host].Mapping[nNewID];
		HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
		HostMapP->HostUniqueNum = MapP->HostUniqueNum;
		HostMapP->ID = MapP->ID;
		for (link = 0; link < LINKS_PER_UNIT; link++)
		{
		    HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
		    HostMapP->Topology[link].Link = NO_LINK;
		}
		if (MapP->Flags & RTA16_SECOND_SLOT)
		{
		    int unit;

		    for (unit = 0; unit < MAX_RUP; unit++)
			if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum ==
			    MapP->RtaUniqueNum)
			    break;
		    if (unit == MAX_RUP)
		    {
			p->RIOError.Error = COULDNT_FIND_ENTRY;
			return -EBUSY;
		    }
		    HostMapP->Flags |= RTA16_SECOND_SLOT;
		    HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
		    p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
		    rio_dprintk (RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n",
			  MapP->ID,
			  p->RIOHosts[host].Mapping[unit].ID);
		}
	    }

	    HostMapP = &p->RIOHosts[host].Mapping[MapP->ID-1];

	    if ( HostMapP->Flags & SLOT_IN_USE )
	    {
		rio_dprintk (RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
		p->RIOError.Error = ID_ALREADY_IN_USE;
		return -EBUSY;
	    }

	    /*
	    ** Assign the sys ports and the name, and mark the slot as
	    ** being in use.
	    */
	    HostMapP->SysPort = MapP->SysPort;
	    if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
	      CCOPY( MapP->Name, HostMapP->Name, MAX_NAME_LEN );
	    HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
#if NEED_TO_FIX
	    RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID-1]);
#endif
	    if (MapP->Flags & RTA16_SECOND_SLOT)
		HostMapP->Flags |= RTA16_SECOND_SLOT;

	    RIOReMapPorts( p, &p->RIOHosts[host], HostMapP );
	    /*
	    ** Adjust 2nd block of 8 phbs
	    */
	    if (MapP->Flags & RTA16_SECOND_SLOT)
		RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);

	    if ( HostMapP->SysPort != NO_PORT )
	    {
		if ( HostMapP->SysPort < p->RIOFirstPortsBooted )
		    p->RIOFirstPortsBooted = HostMapP->SysPort;
		if ( HostMapP->SysPort > p->RIOLastPortsBooted )
		    p->RIOLastPortsBooted = HostMapP->SysPort;
	    }
	    if (MapP->Flags & RTA16_SECOND_SLOT)
	        rio_dprintk (RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n",
		 p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
	    else
	        rio_dprintk (RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
	    return 0;
	}
    }
    p->RIOError.Error = UNKNOWN_HOST_NUMBER;
    rio_dprintk (RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
    return -ENXIO;
}


int
RIOReMapPorts(p, HostP, HostMapP)
struct rio_info *	p;
struct Host *HostP;
struct Map *HostMapP; 
{
	register struct Port *PortP;
	uint SubEnt;
	uint HostPort;
	uint SysPort;
	ushort RtaType;
	unsigned long flags;

#ifdef CHECK
	CheckHostP( HostP );
	CheckHostMapP( HostMapP );
#endif

	rio_dprintk (RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int)HostMapP->SysPort, HostMapP->ID);

	/*
	** We need to tell the UnixRups which sysport the rup corresponds to
	*/
	HostP->UnixRups[HostMapP->ID-1].BaseSysPort = HostMapP->SysPort;

	if ( HostMapP->SysPort == NO_PORT )
		return(0);

	RtaType = GetUnitType(HostMapP->RtaUniqueNum);
	rio_dprintk (RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n",
				(int)HostMapP->SysPort, (int)HostMapP->SysPort+PORTS_PER_RTA-1);

	/*
	** now map each of its eight ports
	*/
	for ( SubEnt=0; SubEnt<PORTS_PER_RTA; SubEnt++) {
	  rio_dprintk (RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", 
		  SubEnt, (int)HostMapP->SysPort);
		SysPort = HostMapP->SysPort+SubEnt;		/* portnumber within system */
					/* portnumber on host */
		
		HostPort = (HostMapP->ID-1)*PORTS_PER_RTA+SubEnt; 

		rio_dprintk (RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
		PortP = p->RIOPortp[SysPort];
#if 0
		PortP->TtyP	= &p->channel[SysPort];
#endif
		rio_dprintk (RIO_DEBUG_TABLE, "Map port\n");

		/*
		** Point at all the real neat data structures
		*/
		rio_spin_lock_irqsave(&PortP->portSem, flags);
		PortP->HostP = HostP;
		PortP->Caddr = HostP->Caddr;

		/*
		** The PhbP cannot be filled in yet
		** unless the host has been booted
		*/
		if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
			struct PHB *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
			PortP->TxAdd =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->tx_add));
			PortP->TxStart =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->tx_start));
			PortP->TxEnd =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->tx_end));
			PortP->RxRemove=(WORD *)RIO_PTR(HostP->Caddr,
									RWORD(PhbP->rx_remove));
			PortP->RxStart =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->rx_start));
			PortP->RxEnd =(WORD *)RIO_PTR(HostP->Caddr,RWORD(PhbP->rx_end));
		}
		else
			PortP->PhbP = NULL;

		/*
		** port related flags
		*/
		PortP->HostPort	= HostPort;
		/*
		** For each part of a 16 port RTA, RupNum is ID - 1.
		*/
		PortP->RupNum = HostMapP->ID - 1;
		if (HostMapP->Flags & RTA16_SECOND_SLOT) {
			PortP->ID2			 = HostMapP->ID2 - 1;
			PortP->SecondBlock	 = TRUE;
		}
		else {
			PortP->ID2			 = 0;
			PortP->SecondBlock	 = FALSE;
		}
		PortP->RtaUniqueNum	= HostMapP->RtaUniqueNum;

		/*
		** If the port was already mapped then thats all we need to do.
		*/
		if (PortP->Mapped) {
			rio_spin_unlock_irqrestore( &PortP->portSem, flags);
			continue;
		}
		else HostMapP->Flags &= ~RTA_NEWBOOT;

		PortP->State		 = 0;
		PortP->Config		= 0;
		/*
		** Check out the module type - if it is special (read only etc.)
		** then we need to set flags in the PortP->Config.
		** Note: For 16 port RTA, all ports are of the same type.
		*/
		if (RtaType == TYPE_RTA16) {
			PortP->Config |= p->RIOModuleTypes[HostP->UnixRups
				[HostMapP->ID-1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
		} else {
			if ( SubEnt < PORTS_PER_MODULE )
				PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups
				[HostMapP->ID-1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
			else
				PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups
				[HostMapP->ID-1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
		}

		/*
		** more port related flags
		*/
		PortP->PortState	= 0;
		PortP->ModemLines	= 0;
		PortP->ModemState	= 0;
		PortP->CookMode		= COOK_WELL;
		PortP->ParamSem		= 0;
		PortP->FlushCmdBodge= 0;
		PortP->WflushFlag	= 0;
		PortP->MagicFlags	= 0;
		PortP->Lock			= 0;
		PortP->Store		= 0;
		PortP->FirstOpen	= 1;

		/*
		** Buffers 'n things
		*/
		PortP->RxDataStart	= 0;
		PortP->Cor2Copy	 = 0;
		PortP->Name		 = &HostMapP->Name[0];
#ifdef STATS
		bzero( (caddr_t)&PortP->Stat, sizeof(struct RIOStats) );
#endif
		PortP->statsGather = 0;
		PortP->txchars = 0;
		PortP->rxchars = 0;
		PortP->opens = 0;
		PortP->closes = 0;
		PortP->ioctls = 0;
		if ( PortP->TxRingBuffer )
			bzero( PortP->TxRingBuffer, p->RIOBufferSize );
		else if ( p->RIOBufferSize ) {
			PortP->TxRingBuffer = sysbrk(p->RIOBufferSize);
			bzero( PortP->TxRingBuffer, p->RIOBufferSize );
		}
		PortP->TxBufferOut	= 0;
		PortP->TxBufferIn	 = 0;
		PortP->Debug		= 0;
		/*
		** LastRxTgl stores the state of the rx toggle bit for this
		** port, to be compared with the state of the next pkt received.
		** If the same, we have received the same rx pkt from the RTA
		** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
		*/
		PortP->LastRxTgl	= ~(uchar)PHB_RX_TGL;

		/*
		** and mark the port as usable
		*/
		PortP->Mapped = 1;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
	}
	if ( HostMapP->SysPort < p->RIOFirstPortsMapped )
		p->RIOFirstPortsMapped = HostMapP->SysPort;
	if ( HostMapP->SysPort > p->RIOLastPortsMapped )
		p->RIOLastPortsMapped = HostMapP->SysPort;

	return 0;
}

int
RIOChangeName(p, MapP)
struct rio_info *p;
struct Map* MapP; 
{
	int host;
	struct Map *HostMapP;
	char *sptr;

	rio_dprintk (RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n",
								MapP->HostUniqueNum,MapP->RtaUniqueNum,
								MapP->ID, (int)MapP->SysPort);

	if ( MapP->ID > MAX_RUP ) {
		rio_dprintk (RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
		p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
		return -EINVAL;
	}

	MapP->Name[MAX_NAME_LEN-1] = '\0';
	sptr = MapP->Name;

	while ( *sptr ) {
		if ( *sptr<' ' || *sptr>'~' ) {
			rio_dprintk (RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
			p->RIOError.Error = BAD_CHARACTER_IN_NAME;
			return -EINVAL;
		}
		sptr++;
	}

	for ( host=0; host < p->RIONumHosts; host++ ) {
		if ( MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum ) {
			if ( (p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING ) {
				p->RIOError.Error = HOST_NOT_RUNNING;
				return -ENXIO;
			}
			if ( MapP->ID==0 ) {
				CCOPY( MapP->Name, p->RIOHosts[host].Name, MAX_NAME_LEN );
				return 0;
			}

			HostMapP = &p->RIOHosts[host].Mapping[MapP->ID-1];

			if ( HostMapP->RtaUniqueNum != MapP->RtaUniqueNum ) {
				p->RIOError.Error = RTA_NUMBER_WRONG;
				return -ENXIO;
			}
			CCOPY( MapP->Name, HostMapP->Name, MAX_NAME_LEN );
			return 0;
		}
	}
	p->RIOError.Error = UNKNOWN_HOST_NUMBER;
	rio_dprintk (RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
	return -ENXIO;
}