drivers/char/rio/rioboot.c

/*
** -----------------------------------------------------------------------------
**
**  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		: rioboot.c
**	SID		: 1.3
**	Last Modified	: 11/6/98 10:33:36
**	Retrieved	: 11/6/98 10:33:48
**
**  ident @(#)rioboot.c	1.3
**
** -----------------------------------------------------------------------------
*/

#ifdef SCCS_LABELS
static char *_rioboot_c_sccs_ = "@(#)rioboot.c	1.3";
#endif

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/string.h>
#include <asm/semaphore.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"

static int RIOBootComplete( struct rio_info *p, struct Host *HostP, uint Rup, struct PktCmd *PktCmdP );

static uchar
RIOAtVec2Ctrl[] =
{
	/* 0 */  INTERRUPT_DISABLE,
	/* 1 */  INTERRUPT_DISABLE,
	/* 2 */  INTERRUPT_DISABLE,
	/* 3 */  INTERRUPT_DISABLE,
	/* 4 */  INTERRUPT_DISABLE,
	/* 5 */  INTERRUPT_DISABLE,
	/* 6 */  INTERRUPT_DISABLE,
	/* 7 */  INTERRUPT_DISABLE,
	/* 8 */  INTERRUPT_DISABLE,
	/* 9 */  IRQ_9|INTERRUPT_ENABLE,
	/* 10 */ INTERRUPT_DISABLE,
	/* 11 */ IRQ_11|INTERRUPT_ENABLE,
	/* 12 */ IRQ_12|INTERRUPT_ENABLE,
	/* 13 */ INTERRUPT_DISABLE,
	/* 14 */ INTERRUPT_DISABLE,
	/* 15 */ IRQ_15|INTERRUPT_ENABLE
};

/*
** Load in the RTA boot code.
*/
int
RIOBootCodeRTA(p, rbp)
struct rio_info *	p;
struct DownLoad *	rbp; 
{
	int offset;

	func_enter ();

	/* Linux doesn't allow you to disable interrupts during a
	   "copyin". (Crash when a pagefault occurs). */
	/* disable(oldspl); */
	
	rio_dprintk (RIO_DEBUG_BOOT, "Data at user address 0x%x\n",(int)rbp->DataP);

	/*
	** Check that we have set asside enough memory for this
	*/
	if ( rbp->Count > SIXTY_FOUR_K ) {
		rio_dprintk (RIO_DEBUG_BOOT, "RTA Boot Code Too Large!\n");
		p->RIOError.Error = HOST_FILE_TOO_LARGE;
		/* restore(oldspl); */
		func_exit ();
		return -ENOMEM;
	}

	if ( p->RIOBooting ) {
		rio_dprintk (RIO_DEBUG_BOOT, "RTA Boot Code : BUSY BUSY BUSY!\n");
		p->RIOError.Error = BOOT_IN_PROGRESS;
		/* restore(oldspl); */
		func_exit ();
		return -EBUSY;
	}

	/*
	** The data we load in must end on a (RTA_BOOT_DATA_SIZE) byte boundary,
	** so calculate how far we have to move the data up the buffer
	** to achieve this.
	*/
	offset = (RTA_BOOT_DATA_SIZE - (rbp->Count % RTA_BOOT_DATA_SIZE)) % 
							RTA_BOOT_DATA_SIZE;

	/*
	** Be clean, and clear the 'unused' portion of the boot buffer,
	** because it will (eventually) be part of the Rta run time environment
	** and so should be zeroed.
	*/
	bzero( (caddr_t)p->RIOBootPackets, offset );

	/*
	** Copy the data from user space.
	*/

	if ( copyin((int)rbp->DataP,((caddr_t)(p->RIOBootPackets))+offset,
				rbp->Count) ==COPYFAIL ) {
		rio_dprintk (RIO_DEBUG_BOOT, "Bad data copy from user space\n");
		p->RIOError.Error = COPYIN_FAILED;
		/* restore(oldspl); */
		func_exit ();
		return -EFAULT;
	}

	/*
	** Make sure that our copy of the size includes that offset we discussed
	** earlier.
	*/
	p->RIONumBootPkts = (rbp->Count+offset)/RTA_BOOT_DATA_SIZE;
	p->RIOBootCount   = rbp->Count;

	/* restore(oldspl); */
	func_exit();
	return 0;
}

void rio_start_card_running (struct Host * HostP)
{
	func_enter ();

	switch ( HostP->Type ) {
	case RIO_AT:
		rio_dprintk (RIO_DEBUG_BOOT, "Start ISA card running\n");
		WBYTE(HostP->Control, 
		      BOOT_FROM_RAM | EXTERNAL_BUS_ON
		      | HostP->Mode
		      | RIOAtVec2Ctrl[HostP->Ivec & 0xF] );
		break;
		
#ifdef FUTURE_RELEASE
	case RIO_MCA:
				/*
				** MCA handles IRQ vectors differently, so we don't write 
				** them to this register.
				*/
		rio_dprintk (RIO_DEBUG_BOOT, "Start MCA card running\n");
		WBYTE(HostP->Control, McaTpBootFromRam | McaTpBusEnable | HostP->Mode);
		break;

	case RIO_EISA:
				/*
				** EISA is totally different and expects OUTBZs to turn it on.
				*/
		rio_dprintk (RIO_DEBUG_BOOT, "Start EISA card running\n");
		OUTBZ( HostP->Slot, EISA_CONTROL_PORT, HostP->Mode | RIOEisaVec2Ctrl[HostP->Ivec] | EISA_TP_RUN | EISA_TP_BUS_ENABLE | EISA_TP_BOOT_FROM_RAM );
		break;
#endif

	case RIO_PCI:
				/*
				** PCI is much the same as MCA. Everything is once again memory
				** mapped, so we are writing to memory registers instead of io
				** ports.
				*/
		rio_dprintk (RIO_DEBUG_BOOT, "Start PCI card running\n");
		WBYTE(HostP->Control, PCITpBootFromRam | PCITpBusEnable | HostP->Mode);
		break;
	default:
		rio_dprintk (RIO_DEBUG_BOOT, "Unknown host type %d\n", HostP->Type);
		break;
	}
/* 
	printk (KERN_INFO "Done with starting the card\n");
	func_exit ();
*/
	return;
}

/*
** Load in the host boot code - load it directly onto all halted hosts
** of the correct type.
**
** Put your rubber pants on before messing with this code - even the magic
** numbers have trouble understanding what they are doing here.
*/
int
RIOBootCodeHOST(p, rbp)
struct rio_info *	p;
register struct DownLoad *rbp;
{
	register struct Host *HostP;
	register caddr_t Cad;
	register PARM_MAP *ParmMapP;
	register int RupN;
	int PortN;
	uint host;
	caddr_t StartP;
	BYTE *DestP;
	int wait_count;
	ushort OldParmMap;
	ushort offset;	/* It is very important that this is a ushort */
	/* uint byte; */
	caddr_t DownCode = NULL;
	unsigned long flags;

	HostP = NULL; /* Assure the compiler we've initialized it */
	for ( host=0; host<p->RIONumHosts; host++ ) {
		rio_dprintk (RIO_DEBUG_BOOT, "Attempt to boot host %d\n",host);
		HostP = &p->RIOHosts[host];
		
		rio_dprintk (RIO_DEBUG_BOOT,  "Host Type = 0x%x, Mode = 0x%x, IVec = 0x%x\n",
		    HostP->Type, HostP->Mode, HostP->Ivec);


		if ( (HostP->Flags & RUN_STATE) != RC_WAITING ) {
			rio_dprintk (RIO_DEBUG_BOOT, "%s %d already running\n","Host",host);
			continue;
		}

		/*
		** Grab a 32 bit pointer to the card.
		*/
		Cad = HostP->Caddr;

		/*
		** We are going to (try) and load in rbp->Count bytes.
		** The last byte will reside at p->RIOConf.HostLoadBase-1;
		** Therefore, we need to start copying at address
		** (caddr+p->RIOConf.HostLoadBase-rbp->Count)
		*/
		StartP = (caddr_t)&Cad[p->RIOConf.HostLoadBase-rbp->Count];

		rio_dprintk (RIO_DEBUG_BOOT, "kernel virtual address for host is 0x%x\n", (int)Cad );
		rio_dprintk (RIO_DEBUG_BOOT, "kernel virtual address for download is 0x%x\n", (int)StartP);
		rio_dprintk (RIO_DEBUG_BOOT, "host loadbase is 0x%x\n",p->RIOConf.HostLoadBase);
		rio_dprintk (RIO_DEBUG_BOOT, "size of download is 0x%x\n", rbp->Count);

		if ( p->RIOConf.HostLoadBase < rbp->Count ) {
			rio_dprintk (RIO_DEBUG_BOOT, "Bin too large\n");
			p->RIOError.Error = HOST_FILE_TOO_LARGE;
			func_exit ();
			return -EFBIG;
		}
		/*
		** Ensure that the host really is stopped.
		** Disable it's external bus & twang its reset line.
		*/
		RIOHostReset( HostP->Type, (struct DpRam *)HostP->CardP, HostP->Slot );

		/*
		** Copy the data directly from user space to the SRAM.
		** This ain't going to be none too clever if the download
		** code is bigger than this segment.
		*/
		rio_dprintk (RIO_DEBUG_BOOT, "Copy in code\n");

		/*
		** PCI hostcard can't cope with 32 bit accesses and so need to copy 
		** data to a local buffer, and then dripfeed the card.
		*/
		if ( HostP->Type == RIO_PCI ) {
		  /* int offset; */

			DownCode = sysbrk(rbp->Count);
			if ( !DownCode ) {
				rio_dprintk (RIO_DEBUG_BOOT, "No system memory available\n");
				p->RIOError.Error = NOT_ENOUGH_CORE_FOR_PCI_COPY;
				func_exit ();
				return -ENOMEM;
			}
			bzero(DownCode, rbp->Count);

			if ( copyin((int)rbp->DataP,DownCode,rbp->Count)==COPYFAIL ) {
				rio_dprintk (RIO_DEBUG_BOOT, "Bad copyin of host data\n");
				sysfree( DownCode, rbp->Count );
				p->RIOError.Error = COPYIN_FAILED;
				func_exit ();
				return -EFAULT;
			}

			HostP->Copy( DownCode, StartP, rbp->Count );

			sysfree( DownCode, rbp->Count );
		}
		else if ( copyin((int)rbp->DataP,StartP,rbp->Count)==COPYFAIL ) {
			rio_dprintk (RIO_DEBUG_BOOT, "Bad copyin of host data\n");
			p->RIOError.Error = COPYIN_FAILED;
			func_exit ();
			return -EFAULT;
		}

		rio_dprintk (RIO_DEBUG_BOOT, "Copy completed\n");

		/*
		**			S T O P !
		**
		** Upto this point the code has been fairly rational, and possibly
		** even straight forward. What follows is a pile of crud that will
		** magically turn into six bytes of transputer assembler. Normally
		** you would expect an array or something, but, being me, I have
		** chosen [been told] to use a technique whereby the startup code
		** will be correct if we change the loadbase for the code. Which
		** brings us onto another issue - the loadbase is the *end* of the
		** code, not the start.
		**
		** If I were you I wouldn't start from here.
		*/

		/*
		** We now need to insert a short boot section into
		** the memory at the end of Sram2. This is normally (de)composed
		** of the last eight bytes of the download code. The
		** download has been assembled/compiled to expect to be
		** loaded from 0x7FFF downwards. We have loaded it
		** at some other address. The startup code goes into the small
		** ram window at Sram2, in the last 8 bytes, which are really
		** at addresses 0x7FF8-0x7FFF.
		**
		** If the loadbase is, say, 0x7C00, then we need to branch to
		** address 0x7BFE to run the host.bin startup code. We assemble
		** this jump manually.
		**
		** The two byte sequence 60 08 is loaded into memory at address
		** 0x7FFE,F. This is a local branch to location 0x7FF8 (60 is nfix 0,
		** which adds '0' to the .O register, complements .O, and then shifts
		** it left by 4 bit positions, 08 is a jump .O+8 instruction. This will
		** add 8 to .O (which was 0xFFF0), and will branch RELATIVE to the new
		** location. Now, the branch starts from the value of .PC (or .IP or
		** whatever the bloody register is called on this chip), and the .PC
		** will be pointing to the location AFTER the branch, in this case
		** .PC == 0x8000, so the branch will be to 0x8000+0xFFF8 = 0x7FF8.
		**
		** A long branch is coded at 0x7FF8. This consists of loading a four
		** byte offset into .O using nfix (as above) and pfix operators. The
		** pfix operates in exactly the same way as the nfix operator, but
		** without the complement operation. The offset, of course, must be
		** relative to the address of the byte AFTER the branch instruction,
		** which will be (urm) 0x7FFC, so, our final destination of the branch
		** (loadbase-2), has to be reached from here. Imagine that the loadbase
		** is 0x7C00 (which it is), then we will need to branch to 0x7BFE (which
		** is the first byte of the initial two byte short local branch of the
		** download code).
		**
		** To code a jump from 0x7FFC (which is where the branch will start
		** from) to 0x7BFE, we will need to branch 0xFC02 bytes (0x7FFC+0xFC02)=
		** 0x7BFE.
		** This will be coded as four bytes:
		** 60 2C 20 02
		** being nfix .O+0
		**	   pfix .O+C
		**	   pfix .O+0
		**	   jump .O+2
		**
		** The nfix operator is used, so that the startup code will be
		** compatible with the whole Tp family. (lies, damn lies, it'll never
		** work in a month of Sundays).
		**
		** The nfix nyble is the 1s complement of the nyble value you
		** want to load - in this case we wanted 'F' so we nfix loaded '0'.
		*/


		/*
		** Dest points to the top 8 bytes of Sram2. The Tp jumps
		** to 0x7FFE at reset time, and starts executing. This is
		** a short branch to 0x7FF8, where a long branch is coded.
		*/

		DestP = (BYTE *)&Cad[0x7FF8];	/* <<<---- READ THE ABOVE COMMENTS */

#define	NFIX(N)	(0x60 | (N))	/* .O  = (~(.O + N))<<4 */
#define	PFIX(N)	(0x20 | (N))	/* .O  =   (.O + N)<<4  */
#define	JUMP(N)	(0x00 | (N))	/* .PC =   .PC + .O	 */

		/*
		** 0x7FFC is the address of the location following the last byte of
		** the four byte jump instruction.
		** READ THE ABOVE COMMENTS
		**
		** offset is (TO-FROM) % MEMSIZE, but with compound buggering about.
		** Memsize is 64K for this range of Tp, so offset is a short (unsigned,
		** cos I don't understand 2's complement).
		*/
		offset = (p->RIOConf.HostLoadBase-2)-0x7FFC;
		WBYTE( DestP[0] , NFIX(((ushort)(~offset) >> (ushort)12) & 0xF) );
		WBYTE( DestP[1] , PFIX(( offset >> 8) & 0xF) );
		WBYTE( DestP[2] , PFIX(( offset >> 4) & 0xF) );
		WBYTE( DestP[3] , JUMP( offset & 0xF) );

		WBYTE( DestP[6] , NFIX(0) );
		WBYTE( DestP[7] , JUMP(8) );

		rio_dprintk (RIO_DEBUG_BOOT, "host loadbase is 0x%x\n",p->RIOConf.HostLoadBase);
		rio_dprintk (RIO_DEBUG_BOOT, "startup offset is 0x%x\n",offset);

		/*
		** Flag what is going on
		*/
		HostP->Flags &= ~RUN_STATE;
		HostP->Flags |= RC_STARTUP;

		/*
		** Grab a copy of the current ParmMap pointer, so we
		** can tell when it has changed.
		*/
		OldParmMap = RWORD(HostP->__ParmMapR);

		rio_dprintk (RIO_DEBUG_BOOT, "Original parmmap is 0x%x\n",OldParmMap);

		/*
		** And start it running (I hope).
		** As there is nothing dodgy or obscure about the
		** above code, this is guaranteed to work every time.
		*/
		rio_dprintk (RIO_DEBUG_BOOT,  "Host Type = 0x%x, Mode = 0x%x, IVec = 0x%x\n",
		    HostP->Type, HostP->Mode, HostP->Ivec);

		rio_start_card_running(HostP);

		rio_dprintk (RIO_DEBUG_BOOT, "Set control port\n");

		/*
		** Now, wait for upto five seconds for the Tp to setup the parmmap
		** pointer:
		*/
		for ( wait_count=0; (wait_count<p->RIOConf.StartupTime)&&
			(RWORD(HostP->__ParmMapR)==OldParmMap); wait_count++ ) {
			rio_dprintk (RIO_DEBUG_BOOT, "Checkout %d, 0x%x\n",wait_count,RWORD(HostP->__ParmMapR));
			delay(HostP, HUNDRED_MS);

		}

		/*
		** If the parmmap pointer is unchanged, then the host code
		** has crashed & burned in a really spectacular way
		*/
		if ( RWORD(HostP->__ParmMapR) == OldParmMap ) {
			rio_dprintk (RIO_DEBUG_BOOT, "parmmap 0x%x\n", RWORD(HostP->__ParmMapR));
			rio_dprintk (RIO_DEBUG_BOOT, "RIO Mesg Run Fail\n");

#define	HOST_DISABLE \
		HostP->Flags &= ~RUN_STATE; \
		HostP->Flags |= RC_STUFFED; \
		RIOHostReset( HostP->Type, (struct DpRam *)HostP->CardP, HostP->Slot );\
		continue

			HOST_DISABLE;
		}

		rio_dprintk (RIO_DEBUG_BOOT, "Running 0x%x\n", RWORD(HostP->__ParmMapR));

		/*
		** Well, the board thought it was OK, and setup its parmmap
		** pointer. For the time being, we will pretend that this
		** board is running, and check out what the error flag says.
		*/

		/*
		** Grab a 32 bit pointer to the parmmap structure
		*/
		ParmMapP = (PARM_MAP *)RIO_PTR(Cad,RWORD(HostP->__ParmMapR));
		rio_dprintk (RIO_DEBUG_BOOT, "ParmMapP : %x\n", (int)ParmMapP);
		ParmMapP = (PARM_MAP *)((unsigned long)Cad + 
						(unsigned long)((RWORD((HostP->__ParmMapR))) & 0xFFFF)); 
		rio_dprintk (RIO_DEBUG_BOOT, "ParmMapP : %x\n", (int)ParmMapP);

		/*
		** The links entry should be 0xFFFF; we set it up
		** with a mask to say how many PHBs to use, and 
		** which links to use.
		*/
		if ( (RWORD(ParmMapP->links) & 0xFFFF) != 0xFFFF ) {
			rio_dprintk (RIO_DEBUG_BOOT, "RIO Mesg Run Fail %s\n", HostP->Name);
			rio_dprintk (RIO_DEBUG_BOOT, "Links = 0x%x\n",RWORD(ParmMapP->links));
			HOST_DISABLE;
		}

		WWORD(ParmMapP->links , RIO_LINK_ENABLE);

		/*
		** now wait for the card to set all the parmmap->XXX stuff
		** this is a wait of upto two seconds....
		*/
		rio_dprintk (RIO_DEBUG_BOOT, "Looking for init_done - %d ticks\n",p->RIOConf.StartupTime);
		HostP->timeout_id = 0;
		for ( wait_count=0; (wait_count<p->RIOConf.StartupTime) && 
						!RWORD(ParmMapP->init_done); wait_count++ ) {
			rio_dprintk (RIO_DEBUG_BOOT, "Waiting for init_done\n");
			delay(HostP, HUNDRED_MS);
		}
		rio_dprintk (RIO_DEBUG_BOOT, "OK! init_done!\n");

		if (RWORD(ParmMapP->error) != E_NO_ERROR || 
							!RWORD(ParmMapP->init_done) ) {
			rio_dprintk (RIO_DEBUG_BOOT, "RIO Mesg Run Fail %s\n", HostP->Name);
			rio_dprintk (RIO_DEBUG_BOOT, "Timedout waiting for init_done\n");
			HOST_DISABLE;
		}

		rio_dprintk (RIO_DEBUG_BOOT, "Got init_done\n");

		/*
		** It runs! It runs!
		*/
		rio_dprintk (RIO_DEBUG_BOOT, "Host ID %x Running\n",HostP->UniqueNum);

		/*
		** set the time period between interrupts.
		*/
		WWORD(ParmMapP->timer, (short)p->RIOConf.Timer );

		/*
		** Translate all the 16 bit pointers in the __ParmMapR into
		** 32 bit pointers for the driver.
		*/
		HostP->ParmMapP	 =	ParmMapP;
		HostP->PhbP		 =	(PHB*)RIO_PTR(Cad,RWORD(ParmMapP->phb_ptr));
		HostP->RupP		 =	(RUP*)RIO_PTR(Cad,RWORD(ParmMapP->rups));
		HostP->PhbNumP	  = (ushort*)RIO_PTR(Cad,RWORD(ParmMapP->phb_num_ptr));
		HostP->LinkStrP	 =	(LPB*)RIO_PTR(Cad,RWORD(ParmMapP->link_str_ptr));

		/*
		** point the UnixRups at the real Rups
		*/
		for ( RupN = 0; RupN<MAX_RUP; RupN++ ) {
			HostP->UnixRups[RupN].RupP		= &HostP->RupP[RupN];
			HostP->UnixRups[RupN].Id		  = RupN+1;
			HostP->UnixRups[RupN].BaseSysPort = NO_PORT;
			spin_lock_init(&HostP->UnixRups[RupN].RupLock);
		}

		for ( RupN = 0; RupN<LINKS_PER_UNIT; RupN++ ) {
			HostP->UnixRups[RupN+MAX_RUP].RupP	= &HostP->LinkStrP[RupN].rup;
			HostP->UnixRups[RupN+MAX_RUP].Id  = 0;
			HostP->UnixRups[RupN+MAX_RUP].BaseSysPort = NO_PORT;
			spin_lock_init(&HostP->UnixRups[RupN+MAX_RUP].RupLock);
		}

		/*
		** point the PortP->Phbs at the real Phbs
		*/
		for ( PortN=p->RIOFirstPortsMapped; 
				PortN<p->RIOLastPortsMapped+PORTS_PER_RTA; PortN++ ) {
			if ( p->RIOPortp[PortN]->HostP == HostP ) {
				struct Port *PortP = p->RIOPortp[PortN];
				struct PHB *PhbP;
				/* int oldspl; */

				if ( !PortP->Mapped )
					continue;

				PhbP = &HostP->PhbP[PortP->HostPort];
				rio_spin_lock_irqsave(&PortP->portSem, flags);

				PortP->PhbP = PhbP;

				PortP->TxAdd	= (WORD *)RIO_PTR(Cad,RWORD(PhbP->tx_add));
				PortP->TxStart  = (WORD *)RIO_PTR(Cad,RWORD(PhbP->tx_start));
				PortP->TxEnd	= (WORD *)RIO_PTR(Cad,RWORD(PhbP->tx_end));
				PortP->RxRemove = (WORD *)RIO_PTR(Cad,RWORD(PhbP->rx_remove));
				PortP->RxStart  = (WORD *)RIO_PTR(Cad,RWORD(PhbP->rx_start));
				PortP->RxEnd	= (WORD *)RIO_PTR(Cad,RWORD(PhbP->rx_end));

				rio_spin_unlock_irqrestore(&PortP->portSem, flags);
				/*
				** point the UnixRup at the base SysPort
				*/
				if ( !(PortN % PORTS_PER_RTA) )
					HostP->UnixRups[PortP->RupNum].BaseSysPort = PortN;
			}
		}

		rio_dprintk (RIO_DEBUG_BOOT, "Set the card running... \n");
		/*
		** last thing - show the world that everything is in place
		*/
		HostP->Flags &= ~RUN_STATE;
		HostP->Flags |= RC_RUNNING;
	}
	/*
	** MPX always uses a poller. This is actually patched into the system
	** configuration and called directly from each clock tick.
	**
	*/
	p->RIOPolling = 1;

	p->RIOSystemUp++;
	
	rio_dprintk (RIO_DEBUG_BOOT, "Done everything %x\n", HostP->Ivec);
	func_exit ();
	return 0;
}



/*
** Boot an RTA. If we have successfully processed this boot, then
** return 1. If we havent, then return 0.
*/
int
RIOBootRup( p, Rup, HostP, PacketP)
struct rio_info *	p;
uint Rup;
struct Host *HostP;
struct PKT *PacketP; 
{
	struct PktCmd *PktCmdP = (struct PktCmd *)PacketP->data;
	struct PktCmd_M *PktReplyP;
	struct CmdBlk *CmdBlkP;
	uint sequence;

#ifdef CHECK
	CheckHost(Host);
	CheckRup(Rup);
	CheckHostP(HostP);
	CheckPacketP(PacketP);
#endif

	/*
	** If we haven't been told what to boot, we can't boot it.
	*/
	if ( p->RIONumBootPkts == 0 ) {
		rio_dprintk (RIO_DEBUG_BOOT, "No RTA code to download yet\n");
		return 0;
	}

	/* rio_dprint(RIO_DEBUG_BOOT, NULL,DBG_BOOT,"Incoming command packet\n"); */
	/* ShowPacket( DBG_BOOT, PacketP ); */

	/*
	** Special case of boot completed - if we get one of these then we
	** don't need a command block. For all other cases we do, so handle
	** this first and then get a command block, then handle every other
	** case, relinquishing the command block if disaster strikes!
	*/
	if ( (RBYTE(PacketP->len) & PKT_CMD_BIT) && 
			(RBYTE(PktCmdP->Command)==BOOT_COMPLETED) )
		return RIOBootComplete(p, HostP, Rup, PktCmdP );

	/*
	** try to unhook a command block from the command free list.
	*/
	if ( !(CmdBlkP = RIOGetCmdBlk()) ) {
		rio_dprintk (RIO_DEBUG_BOOT, "No command blocks to boot RTA! come back later.\n");
		return 0;
	}

	/*
	** Fill in the default info on the command block
	*/
	CmdBlkP->Packet.dest_unit = Rup < (ushort)MAX_RUP ? Rup : 0;
	CmdBlkP->Packet.dest_port = BOOT_RUP;
	CmdBlkP->Packet.src_unit  = 0;
	CmdBlkP->Packet.src_port  = BOOT_RUP;

	CmdBlkP->PreFuncP = CmdBlkP->PostFuncP = NULL;
	PktReplyP = (struct PktCmd_M *)CmdBlkP->Packet.data;

	/*
	** process COMMANDS on the boot rup!
	*/
	if ( RBYTE(PacketP->len) & PKT_CMD_BIT ) {
		/*
		** We only expect one type of command - a BOOT_REQUEST!
		*/
		if ( RBYTE(PktCmdP->Command) != BOOT_REQUEST ) {
			rio_dprintk (RIO_DEBUG_BOOT, "Unexpected command %d on BOOT RUP %d of host %d\n", 
						PktCmdP->Command,Rup,HostP-p->RIOHosts);
			ShowPacket( DBG_BOOT, PacketP );
			RIOFreeCmdBlk( CmdBlkP );
			return 1;
		}

		/*
		** Build a Boot Sequence command block
		**
		** 02.03.1999 ARG - ESIL 0820 fix
		** We no longer need to use "Boot Mode", we'll always allow
		** boot requests - the boot will not complete if the device
		** appears in the bindings table.
		** So, this conditional is not required ...
		**
		if (p->RIOBootMode == RC_BOOT_NONE)
			**
			** If the system is in slave mode, and a boot request is
			** received, set command to BOOT_ABORT so that the boot
			** will not complete.
			**
			PktReplyP->Command			 = BOOT_ABORT;
		else
		**
		** We'll just (always) set the command field in packet reply
		** to allow an attempted boot sequence :
		*/
		PktReplyP->Command = BOOT_SEQUENCE;

		PktReplyP->BootSequence.NumPackets = p->RIONumBootPkts;
		PktReplyP->BootSequence.LoadBase   = p->RIOConf.RtaLoadBase;
		PktReplyP->BootSequence.CodeSize   = p->RIOBootCount;

		CmdBlkP->Packet.len				= BOOT_SEQUENCE_LEN | PKT_CMD_BIT;

		bcopy("BOOT",(void *)&CmdBlkP->Packet.data[BOOT_SEQUENCE_LEN],4);

		rio_dprintk (RIO_DEBUG_BOOT, "Boot RTA on Host %d Rup %d - %d (0x%x) packets to 0x%x\n",
			HostP-p->RIOHosts, Rup, p->RIONumBootPkts, p->RIONumBootPkts, 
								p->RIOConf.RtaLoadBase);

		/*
		** If this host is in slave mode, send the RTA an invalid boot
		** sequence command block to force it to kill the boot. We wait
		** for half a second before sending this packet to prevent the RTA
		** attempting to boot too often. The master host should then grab
		** the RTA and make it its own.
		*/
		p->RIOBooting++;
		RIOQueueCmdBlk( HostP, Rup, CmdBlkP );
		return 1;
	}

	/*
	** It is a request for boot data.
	*/
	sequence = RWORD(PktCmdP->Sequence);

	rio_dprintk (RIO_DEBUG_BOOT, "Boot block %d on Host %d Rup%d\n",sequence,HostP-p->RIOHosts,Rup);

	if ( sequence >= p->RIONumBootPkts ) {
		rio_dprintk (RIO_DEBUG_BOOT, "Got a request for packet %d, max is %d\n", sequence, 
					p->RIONumBootPkts);
		ShowPacket( DBG_BOOT, PacketP );
	}

	PktReplyP->Sequence = sequence;

	bcopy( p->RIOBootPackets[ p->RIONumBootPkts - sequence - 1 ], 
				PktReplyP->BootData, RTA_BOOT_DATA_SIZE );

	CmdBlkP->Packet.len = PKT_MAX_DATA_LEN;
	ShowPacket( DBG_BOOT, &CmdBlkP->Packet );
	RIOQueueCmdBlk( HostP, Rup, CmdBlkP );
	return 1;
}

/*
** This function is called when an RTA been booted.
** If booted by a host, HostP->HostUniqueNum is the booting host.
** If booted by an RTA, HostP->Mapping[Rup].RtaUniqueNum is the booting RTA.
** RtaUniq is the booted RTA.
*/
static int RIOBootComplete( struct rio_info *p, struct Host *HostP, uint Rup, struct PktCmd *PktCmdP )
{
	struct Map	*MapP = NULL;
	struct Map	*MapP2 = NULL;
	int	Flag;
	int	found;
	int	host, rta;
	int	EmptySlot = -1;
	int	entry, entry2;
	char	*MyType, *MyName;
	uint	MyLink;
	ushort	RtaType;
	uint	RtaUniq = (RBYTE(PktCmdP->UniqNum[0])) +
			  (RBYTE(PktCmdP->UniqNum[1]) << 8) +
			  (RBYTE(PktCmdP->UniqNum[2]) << 16) +
			  (RBYTE(PktCmdP->UniqNum[3]) << 24);

	/* Was RIOBooting-- . That's bad. If an RTA sends two of them, the
	   driver will never think that the RTA has booted... -- REW */
	p->RIOBooting = 0;

	rio_dprintk (RIO_DEBUG_BOOT, "RTA Boot completed - BootInProgress now %d\n", p->RIOBooting);

	/*
	** Determine type of unit (16/8 port RTA).
	*/
	RtaType = GetUnitType(RtaUniq);
        if ( Rup >= (ushort)MAX_RUP ) {
	    rio_dprintk (RIO_DEBUG_BOOT, "RIO: Host %s has booted an RTA(%d) on link %c\n",
	     HostP->Name, 8 * RtaType, RBYTE(PktCmdP->LinkNum)+'A');
	} else {
	    rio_dprintk (RIO_DEBUG_BOOT, "RIO: RTA %s has booted an RTA(%d) on link %c\n",
	     HostP->Mapping[Rup].Name, 8 * RtaType,
	     RBYTE(PktCmdP->LinkNum)+'A');
	}

	rio_dprintk (RIO_DEBUG_BOOT, "UniqNum is 0x%x\n",RtaUniq);

        if ( ( RtaUniq == 0x00000000 ) || ( RtaUniq == 0xffffffff ) )
	{
	    rio_dprintk (RIO_DEBUG_BOOT, "Illegal RTA Uniq Number\n");
	    return TRUE;
	}

	/*
	** If this RTA has just booted an RTA which doesn't belong to this
	** system, or the system is in slave mode, do not attempt to create
	** a new table entry for it.
	*/
	if (!RIOBootOk(p, HostP, RtaUniq))
	{
	    MyLink = RBYTE(PktCmdP->LinkNum);
	    if (Rup < (ushort) MAX_RUP)
	    {
		/*
		** RtaUniq was clone booted (by this RTA). Instruct this RTA
		** to hold off further attempts to boot on this link for 30
		** seconds.
		*/
		if (RIOSuspendBootRta(HostP, HostP->Mapping[Rup].ID, MyLink))
		{
		    rio_dprintk (RIO_DEBUG_BOOT, "RTA failed to suspend booting on link %c\n",
		     'A' + MyLink);
		}
	    }
	    else
	    {
		/*
		** RtaUniq was booted by this host. Set the booting link
		** to hold off for 30 seconds to give another unit a
		** chance to boot it.
		*/
		WWORD(HostP->LinkStrP[MyLink].WaitNoBoot, 30);
	    }
	    rio_dprintk (RIO_DEBUG_BOOT, "RTA %x not owned - suspend booting down link %c on unit %x\n",
	      RtaUniq, 'A' + MyLink, HostP->Mapping[Rup].RtaUniqueNum);
	    return TRUE;
	}

	/*
	** Check for a SLOT_IN_USE entry for this RTA attached to the
	** current host card in the driver table.
	**
	** If it exists, make a note that we have booted it. Other parts of
	** the driver are interested in this information at a later date,
	** in particular when the booting RTA asks for an ID for this unit,
	** we must have set the BOOTED flag, and the NEWBOOT flag is used
	** to force an open on any ports that where previously open on this
	** unit.
	*/
        for ( entry=0; entry<MAX_RUP; entry++ )
	{
	    uint sysport;

	    if ((HostP->Mapping[entry].Flags & SLOT_IN_USE) && 
	       (HostP->Mapping[entry].RtaUniqueNum==RtaUniq))
	    {
	        HostP->Mapping[entry].Flags |= RTA_BOOTED|RTA_NEWBOOT;
#ifdef NEED_TO_FIX
		RIO_SV_BROADCAST(HostP->svFlags[entry]);
#endif
		if ( (sysport=HostP->Mapping[entry].SysPort) != NO_PORT )
		{
		   if ( sysport < p->RIOFirstPortsBooted )
			p->RIOFirstPortsBooted = sysport;
		   if ( sysport > p->RIOLastPortsBooted )
			p->RIOLastPortsBooted = sysport;
		   /*
		   ** For a 16 port RTA, check the second bank of 8 ports
		   */
		   if (RtaType == TYPE_RTA16)
		   {
			entry2 = HostP->Mapping[entry].ID2 - 1;
			HostP->Mapping[entry2].Flags |= RTA_BOOTED|RTA_NEWBOOT;
#ifdef NEED_TO_FIX
			RIO_SV_BROADCAST(HostP->svFlags[entry2]);
#endif
			sysport = HostP->Mapping[entry2].SysPort;
			if ( sysport < p->RIOFirstPortsBooted )
			    p->RIOFirstPortsBooted = sysport;
			if ( sysport > p->RIOLastPortsBooted )
			    p->RIOLastPortsBooted = sysport;
		   }
		}
		if (RtaType == TYPE_RTA16) {
		   rio_dprintk (RIO_DEBUG_BOOT, "RTA will be given IDs %d+%d\n",
		    entry+1, entry2+1);
		} else {
		   rio_dprintk (RIO_DEBUG_BOOT, "RTA will be given ID %d\n",entry+1);
		}
		return TRUE;
	    }
	}

	rio_dprintk (RIO_DEBUG_BOOT, "RTA not configured for this host\n");

	if ( Rup >= (ushort)MAX_RUP )
	{
	    /*
	    ** It was a host that did the booting
	    */
	    MyType = "Host";
	    MyName = HostP->Name;
	}
	else
	{
	    /*
	    ** It was an RTA that did the booting
	    */
	    MyType = "RTA";
	    MyName = HostP->Mapping[Rup].Name;
	}
#ifdef CHECK
	CheckString(MyType);
	CheckString(MyName);
#endif

	MyLink = RBYTE(PktCmdP->LinkNum);

	/*
	** There is no SLOT_IN_USE entry for this RTA attached to the current
	** host card in the driver table.
	**
	** Check for a SLOT_TENTATIVE entry for this RTA attached to the
	** current host card in the driver table.
	**
	** If we find one, then we re-use that slot.
	*/
	for ( entry=0; entry<MAX_RUP; entry++ )
	{
	    if ( (HostP->Mapping[entry].Flags & SLOT_TENTATIVE) &&
		 (HostP->Mapping[entry].RtaUniqueNum == RtaUniq) )
	    {
		if (RtaType == TYPE_RTA16)
		{
		    entry2 = HostP->Mapping[entry].ID2 - 1;
		    if ( (HostP->Mapping[entry2].Flags & SLOT_TENTATIVE) &&
			 (HostP->Mapping[entry2].RtaUniqueNum == RtaUniq) )
			rio_dprintk (RIO_DEBUG_BOOT, "Found previous tentative slots (%d+%d)\n",
			 entry, entry2);
		    else
			continue;
		}
		else
			rio_dprintk (RIO_DEBUG_BOOT, "Found previous tentative slot (%d)\n",entry);
		if (! p->RIONoMessage)
		    cprintf("RTA connected to %s '%s' (%c) not configured.\n",MyType,MyName,MyLink+'A');
		return TRUE;
	    }
	}

	/*
	** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA
	** attached to the current host card in the driver table.
	**
	** Check if there is a SLOT_IN_USE or SLOT_TENTATIVE entry on another
	** host for this RTA in the driver table.
	**
	** For a SLOT_IN_USE entry on another host, we need to delete the RTA
	** entry from the other host and add it to this host (using some of
	** the functions from table.c which do this).
	** For a SLOT_TENTATIVE entry on another host, we must cope with the
	** following scenario:
	**
	** + Plug 8 port RTA into host A. (This creates SLOT_TENTATIVE entry
	**   in table)
	** + Unplug RTA and plug into host B. (We now have 2 SLOT_TENTATIVE
	**   entries)
	** + Configure RTA on host B. (This slot now becomes SLOT_IN_USE)
	** + Unplug RTA and plug back into host A.
	** + Configure RTA on host A. We now have the same RTA configured
	**   with different ports on two different hosts.
	*/
	rio_dprintk (RIO_DEBUG_BOOT, "Have we seen RTA %x before?\n", RtaUniq );
	found = 0;
	Flag = 0; /* Convince the compiler this variable is initialized */
	for ( host = 0; !found && (host < p->RIONumHosts); host++ )
	{
	    for ( rta=0; rta<MAX_RUP; rta++ )
	    {
		if ((p->RIOHosts[host].Mapping[rta].Flags &
		 (SLOT_IN_USE | SLOT_TENTATIVE)) &&
		 (p->RIOHosts[host].Mapping[rta].RtaUniqueNum==RtaUniq))
		{
		    Flag = p->RIOHosts[host].Mapping[rta].Flags;
		    MapP = &p->RIOHosts[host].Mapping[rta];
		    if (RtaType == TYPE_RTA16)
		    {
			MapP2 = &p->RIOHosts[host].Mapping[MapP->ID2 - 1];
			rio_dprintk (RIO_DEBUG_BOOT, "This RTA is units %d+%d from host %s\n",
			 rta+1, MapP->ID2, p->RIOHosts[host].Name);
		    }
		    else
			rio_dprintk (RIO_DEBUG_BOOT, "This RTA is unit %d from host %s\n",
			 rta+1, p->RIOHosts[host].Name);
		    found = 1;
		    break;
		}
	    }
	}

	/*
	** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA
	** attached to the current host card in the driver table.
	**
	** If we have not found a SLOT_IN_USE or SLOT_TENTATIVE entry on
	** another host for this RTA in the driver table...
	**
	** Check for a SLOT_IN_USE entry for this RTA in the config table.
	*/
	if ( !MapP )
	{
	    rio_dprintk (RIO_DEBUG_BOOT, "Look for RTA %x in RIOSavedTable\n",RtaUniq);
	    for ( rta=0; rta < TOTAL_MAP_ENTRIES; rta++ )
	    {
		rio_dprintk (RIO_DEBUG_BOOT, "Check table entry %d (%x)",
		      rta,
		      p->RIOSavedTable[rta].RtaUniqueNum);

		if ( (p->RIOSavedTable[rta].Flags & SLOT_IN_USE) &&
		 (p->RIOSavedTable[rta].RtaUniqueNum == RtaUniq) )
		{
		    MapP = &p->RIOSavedTable[rta];
		    Flag = p->RIOSavedTable[rta].Flags;
		    if (RtaType == TYPE_RTA16)
		    {
                        for (entry2 = rta + 1; entry2 < TOTAL_MAP_ENTRIES;
                         entry2++)
                        {
                            if (p->RIOSavedTable[entry2].RtaUniqueNum == RtaUniq)
                                break;
                        }
                        MapP2 = &p->RIOSavedTable[entry2];
                        rio_dprintk (RIO_DEBUG_BOOT, "This RTA is from table entries %d+%d\n",
                              rta, entry2);
		    }
		    else
			rio_dprintk (RIO_DEBUG_BOOT, "This RTA is from table entry %d\n", rta);
		    break;
		}
	    }
	}

	/*
	** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA
	** attached to the current host card in the driver table.
	**
	** We may have found a SLOT_IN_USE entry on another host for this
	** RTA in the config table, or a SLOT_IN_USE or SLOT_TENTATIVE entry
	** on another host for this RTA in the driver table.
	**
	** Check the driver table for room to fit this newly discovered RTA.
	** RIOFindFreeID() first looks for free slots and if it does not
	** find any free slots it will then attempt to oust any
	** tentative entry in the table.
	*/
	EmptySlot = 1;
	if (RtaType == TYPE_RTA16)
	{
	    if (RIOFindFreeID(p, HostP, &entry, &entry2) == 0)
	    {
		RIODefaultName(p, HostP, entry);
		FillSlot(entry, entry2, RtaUniq, HostP);
		EmptySlot = 0;
	    }
	}
	else
	{
	    if (RIOFindFreeID(p, HostP, &entry, NULL) == 0)
	    {
		RIODefaultName(p, HostP, entry);
		FillSlot(entry, 0, RtaUniq, HostP);
		EmptySlot = 0;
	    }
	}

	/*
	** There is no SLOT_IN_USE or SLOT_TENTATIVE entry for this RTA
	** attached to the current host card in the driver table.
	**
	** If we found a SLOT_IN_USE entry on another host for this
	** RTA in the config or driver table, and there are enough free
	** slots in the driver table, then we need to move it over and
	** delete it from the other host.
	** If we found a SLOT_TENTATIVE entry on another host for this
	** RTA in the driver table, just delete the other host entry.
	*/
	if (EmptySlot == 0)
	{
	    if ( MapP )
	    {
		if (Flag & SLOT_IN_USE)
		{
		    rio_dprintk (RIO_DEBUG_BOOT, 
    "This RTA configured on another host - move entry to current host (1)\n");
		    HostP->Mapping[entry].SysPort = MapP->SysPort;
		    CCOPY( MapP->Name, HostP->Mapping[entry].Name, MAX_NAME_LEN );
		    HostP->Mapping[entry].Flags =
		     SLOT_IN_USE | RTA_BOOTED | RTA_NEWBOOT;
#ifdef NEED_TO_FIX
		    RIO_SV_BROADCAST(HostP->svFlags[entry]);
#endif
		    RIOReMapPorts( p, HostP, &HostP->Mapping[entry] );
		    if ( HostP->Mapping[entry].SysPort < p->RIOFirstPortsBooted )
			p->RIOFirstPortsBooted = HostP->Mapping[entry].SysPort;
		    if ( HostP->Mapping[entry].SysPort > p->RIOLastPortsBooted )
			p->RIOLastPortsBooted = HostP->Mapping[entry].SysPort;
		    rio_dprintk (RIO_DEBUG_BOOT, "SysPort %d, Name %s\n",(int)MapP->SysPort,MapP->Name);
		}
		else
		{
		    rio_dprintk (RIO_DEBUG_BOOT, 
   "This RTA has a tentative entry on another host - delete that entry (1)\n");
		    HostP->Mapping[entry].Flags =
		     SLOT_TENTATIVE | RTA_BOOTED | RTA_NEWBOOT;
#ifdef NEED_TO_FIX
		    RIO_SV_BROADCAST(HostP->svFlags[entry]);
#endif
		}
		if (RtaType == TYPE_RTA16)
		{
		    if (Flag & SLOT_IN_USE)
		    {
			HostP->Mapping[entry2].Flags = SLOT_IN_USE |
			 RTA_BOOTED | RTA_NEWBOOT | RTA16_SECOND_SLOT;
#ifdef NEED_TO_FIX
			RIO_SV_BROADCAST(HostP->svFlags[entry2]);
#endif
			HostP->Mapping[entry2].SysPort = MapP2->SysPort;
			/*
			** Map second block of ttys for 16 port RTA
			*/
			RIOReMapPorts( p, HostP, &HostP->Mapping[entry2] );
		       if (HostP->Mapping[entry2].SysPort < p->RIOFirstPortsBooted)
			 p->RIOFirstPortsBooted = HostP->Mapping[entry2].SysPort;
		       if (HostP->Mapping[entry2].SysPort > p->RIOLastPortsBooted)
			 p->RIOLastPortsBooted = HostP->Mapping[entry2].SysPort;
			rio_dprintk (RIO_DEBUG_BOOT, "SysPort %d, Name %s\n",
			       (int)HostP->Mapping[entry2].SysPort,
			       HostP->Mapping[entry].Name);
		    }
		    else
			HostP->Mapping[entry2].Flags = SLOT_TENTATIVE |
			 RTA_BOOTED | RTA_NEWBOOT | RTA16_SECOND_SLOT;
#ifdef NEED_TO_FIX
			RIO_SV_BROADCAST(HostP->svFlags[entry2]);
#endif
		    bzero( (caddr_t)MapP2, sizeof(struct Map) );
		}
		bzero( (caddr_t)MapP, sizeof(struct Map) );
		if (! p->RIONoMessage)
		    cprintf("An orphaned RTA has been adopted by %s '%s' (%c).\n",MyType,MyName,MyLink+'A');
	    }
	    else if (! p->RIONoMessage)
		cprintf("RTA connected to %s '%s' (%c) not configured.\n",MyType,MyName,MyLink+'A');
	    RIOSetChange(p);
	    return TRUE;
	}

	/*
	** There is no room in the driver table to make an entry for the
	** booted RTA. Keep a note of its Uniq Num in the overflow table,
	** so we can ignore it's ID requests.
	*/
	if (! p->RIONoMessage)
	    cprintf("The RTA connected to %s '%s' (%c) cannot be configured.  You cannot configure more than 128 ports to one host card.\n",MyType,MyName,MyLink+'A');
	for ( entry=0; entry<HostP->NumExtraBooted; entry++ )
	{
	    if ( HostP->ExtraUnits[entry] == RtaUniq )
	    {
		/*
		** already got it!
		*/
		return TRUE;
	    }
	}
	/*
	** If there is room, add the unit to the list of extras
	*/
	if ( HostP->NumExtraBooted < MAX_EXTRA_UNITS )
	    HostP->ExtraUnits[HostP->NumExtraBooted++] = RtaUniq;
	return TRUE;
}


/*
** If the RTA or its host appears in the RIOBindTab[] structure then
** we mustn't boot the RTA and should return FALSE.
** This operation is slightly different from the other drivers for RIO
** in that this is designed to work with the new utilities
** not config.rio and is FAR SIMPLER.
** We no longer support the RIOBootMode variable. It is all done from the
** "boot/noboot" field in the rio.cf file.
*/
int
RIOBootOk(p, HostP, RtaUniq)
struct rio_info *	p;
struct Host *		HostP;
ulong RtaUniq;
{
    int		Entry;
    uint HostUniq = HostP->UniqueNum;

	/*
	** Search bindings table for RTA or its parent.
	** If it exists, return 0, else 1.
	*/
	for (Entry = 0;
	    ( Entry < MAX_RTA_BINDINGS ) && ( p->RIOBindTab[Entry] != 0 );
	    Entry++)
	{
		if ( (p->RIOBindTab[Entry] == HostUniq) ||
		     (p->RIOBindTab[Entry] == RtaUniq) )
			return 0;
	}
	return 1;
}

/*
** Make an empty slot tentative. If this is a 16 port RTA, make both
** slots tentative, and the second one RTA_SECOND_SLOT as well.
*/

void
FillSlot(entry, entry2, RtaUniq, HostP)
int entry;
int entry2;
uint RtaUniq;
struct Host *HostP;
{
	int		link;

	rio_dprintk (RIO_DEBUG_BOOT, "FillSlot(%d, %d, 0x%x...)\n", entry, entry2, RtaUniq);

	HostP->Mapping[entry].Flags = (RTA_BOOTED | RTA_NEWBOOT | SLOT_TENTATIVE);
	HostP->Mapping[entry].SysPort = NO_PORT;
	HostP->Mapping[entry].RtaUniqueNum = RtaUniq;
	HostP->Mapping[entry].HostUniqueNum = HostP->UniqueNum;
	HostP->Mapping[entry].ID = entry + 1;
	HostP->Mapping[entry].ID2 = 0;
	if (entry2) {
		HostP->Mapping[entry2].Flags = (RTA_BOOTED | RTA_NEWBOOT | 
								SLOT_TENTATIVE | RTA16_SECOND_SLOT);
		HostP->Mapping[entry2].SysPort = NO_PORT;
		HostP->Mapping[entry2].RtaUniqueNum = RtaUniq;
		HostP->Mapping[entry2].HostUniqueNum = HostP->UniqueNum;
		HostP->Mapping[entry2].Name[0] = '\0';
		HostP->Mapping[entry2].ID = entry2 + 1;
		HostP->Mapping[entry2].ID2 = entry + 1;
		HostP->Mapping[entry].ID2 = entry2 + 1;
	}
	/*
	** Must set these up, so that utilities show
	** topology of 16 port RTAs correctly
	*/
	for ( link=0; link<LINKS_PER_UNIT; link++ ) {
		HostP->Mapping[entry].Topology[link].Unit = ROUTE_DISCONNECT;
		HostP->Mapping[entry].Topology[link].Link = NO_LINK;
		if (entry2) {
			HostP->Mapping[entry2].Topology[link].Unit = ROUTE_DISCONNECT;
			HostP->Mapping[entry2].Topology[link].Link = NO_LINK;
		}
	}
}

#if 0
/*
	Function:	This function is to disable the disk interrupt 
    Returns :   Nothing
*/
void
disable_interrupt(vector)
int	vector;
{
	int	ps;
	int	val;

	disable(ps);
	if (vector > 40)  {
		val = 1 << (vector - 40);
		__outb(S8259+1, __inb(S8259+1) | val);
	}
	else {
		val = 1 << (vector - 32);
		__outb(M8259+1, __inb(M8259+1) | val);
	}
	restore(ps);
}

/*
	Function:	This function is to enable the disk interrupt 
    Returns :   Nothing
*/
void
enable_interrupt(vector)
int	vector;
{
	int	ps;
	int	val;

	disable(ps);
	if (vector > 40)  {
		val = 1 << (vector - 40);
		val = ~val;
		__outb(S8259+1, __inb(S8259+1) & val);
	}
	else {
		val = 1 << (vector - 32);
		val = ~val;
		__outb(M8259+1, __inb(M8259+1) & val);
	}
	restore(ps);
}
#endif