patch-2.3.99-pre7 linux/drivers/char/rio/riocmd.c
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- Lines: 1145
- Date:
Wed May 10 16:56:44 2000
- Orig file:
v2.3.99-pre6/linux/drivers/char/rio/riocmd.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre6/linux/drivers/char/rio/riocmd.c linux/drivers/char/rio/riocmd.c
@@ -0,0 +1,1144 @@
+/*
+** -----------------------------------------------------------------------------
+**
+** Perle Specialix driver for Linux
+** ported from the existing SCO driver source
+**
+ *
+ * (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 : riocmd.c
+** SID : 1.2
+** Last Modified : 11/6/98 10:33:41
+** Retrieved : 11/6/98 10:33:49
+**
+** ident @(#)riocmd.c 1.2
+**
+** -----------------------------------------------------------------------------
+*/
+#ifdef SCCS_LABELS
+static char *_riocmd_c_sccs_ = "@(#)riocmd.c 1.2";
+#endif
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/malloc.h>
+#include <linux/errno.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/compatmac.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"
+
+
+static struct IdentifyRta IdRta;
+static struct KillNeighbour KillUnit;
+
+int
+RIOFoadRta(HostP, MapP)
+struct Host * HostP;
+struct Map * MapP;
+{
+ struct CmdBlk *CmdBlkP;
+
+ rio_dprint(RIO_DEBUG_CMD, ("FOAD RTA\n"));
+
+ CmdBlkP = RIOGetCmdBlk();
+
+ if ( !CmdBlkP ) {
+ rio_dprint(RIO_DEBUG_CMD, ("FOAD RTA: GetCmdBlk failed\n"));
+ return ENXIO;
+ }
+
+ CmdBlkP->Packet.dest_unit = MapP->ID;
+ CmdBlkP->Packet.dest_port = BOOT_RUP;
+ CmdBlkP->Packet.src_unit = 0;
+ CmdBlkP->Packet.src_port = BOOT_RUP;
+ CmdBlkP->Packet.len = 0x84;
+ CmdBlkP->Packet.data[0] = IFOAD;
+ CmdBlkP->Packet.data[1] = 0;
+ CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF;
+ CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF;
+
+ if ( RIOQueueCmdBlk( HostP, MapP->ID-1, CmdBlkP) == RIO_FAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("FOAD RTA: Failed to queue foad command\n"));
+ return EIO;
+ }
+ return 0;
+}
+
+int
+RIOZombieRta(HostP, MapP)
+struct Host * HostP;
+struct Map * MapP;
+{
+ struct CmdBlk *CmdBlkP;
+
+ rio_dprint(RIO_DEBUG_CMD, ("ZOMBIE RTA\n"));
+
+ CmdBlkP = RIOGetCmdBlk();
+
+ if ( !CmdBlkP ) {
+ rio_dprint(RIO_DEBUG_CMD, ("ZOMBIE RTA: GetCmdBlk failed\n"));
+ return ENXIO;
+ }
+
+ CmdBlkP->Packet.dest_unit = MapP->ID;
+ CmdBlkP->Packet.dest_port = BOOT_RUP;
+ CmdBlkP->Packet.src_unit = 0;
+ CmdBlkP->Packet.src_port = BOOT_RUP;
+ CmdBlkP->Packet.len = 0x84;
+ CmdBlkP->Packet.data[0] = ZOMBIE;
+ CmdBlkP->Packet.data[1] = 0;
+ CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF;
+ CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF;
+
+ if ( RIOQueueCmdBlk( HostP, MapP->ID-1, CmdBlkP) == RIO_FAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("ZOMBIE RTA: Failed to queue zombie command\n"));
+ return EIO;
+ }
+ return 0;
+}
+
+int
+RIOCommandRta(p, RtaUnique, func)
+struct rio_info * p;
+uint RtaUnique;
+int (* func)( struct Host *HostP, struct Map *MapP );
+{
+ uint Host;
+
+ rio_dprint(RIO_DEBUG_CMD, ("Command RTA 0x%x func 0x%x\n", RtaUnique, (int)func ));
+
+ if ( !RtaUnique )
+ return(0);
+
+ for ( Host = 0; Host < p->RIONumHosts; Host++ ) {
+ uint Rta;
+ struct Host *HostP = &p->RIOHosts[Host];
+
+ for ( Rta = 0; Rta < RTAS_PER_HOST; Rta++ ) {
+ struct Map *MapP = &HostP->Mapping[Rta];
+
+ if ( MapP->RtaUniqueNum == RtaUnique ) {
+ uint Link;
+
+ /*
+ ** now, lets just check we have a route to it...
+ ** IF the routing stuff is working, then one of the
+ ** topology entries for this unit will have a legit
+ ** route *somewhere*. We care not where - if its got
+ ** any connections, we can get to it.
+ */
+ for ( Link = 0; Link < LINKS_PER_UNIT; Link++ ) {
+ if ( MapP->Topology[Link].Unit <= (uchar)MAX_RUP ) {
+ /*
+ ** Its worth trying the operation...
+ */
+ return (*func)( HostP, MapP );
+ }
+ }
+ }
+ }
+ }
+ return ENXIO;
+}
+
+
+int
+RIOIdentifyRta(p, arg)
+struct rio_info * p;
+caddr_t arg;
+{
+ uint Host;
+
+ if ( copyin( (int)arg, (caddr_t)&IdRta, sizeof(IdRta) ) == COPYFAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("RIO_IDENTIFY_RTA copy failed\n"));
+ p->RIOError.Error = COPYIN_FAILED;
+ return EFAULT;
+ }
+
+ for ( Host = 0 ; Host < p->RIONumHosts; Host++ ) {
+ uint Rta;
+ struct Host *HostP = &p->RIOHosts[Host];
+
+ for ( Rta = 0; Rta < RTAS_PER_HOST; Rta++ ) {
+ struct Map *MapP = &HostP->Mapping[Rta];
+
+ if ( MapP->RtaUniqueNum == IdRta.RtaUnique ) {
+ uint Link;
+ /*
+ ** now, lets just check we have a route to it...
+ ** IF the routing stuff is working, then one of the
+ ** topology entries for this unit will have a legit
+ ** route *somewhere*. We care not where - if its got
+ ** any connections, we can get to it.
+ */
+ for ( Link = 0; Link < LINKS_PER_UNIT; Link++ ) {
+ if ( MapP->Topology[Link].Unit <= (uchar)MAX_RUP ) {
+ /*
+ ** Its worth trying the operation...
+ */
+ struct CmdBlk *CmdBlkP;
+
+ rio_dprint(RIO_DEBUG_CMD, ("IDENTIFY RTA\n"));
+
+ CmdBlkP = RIOGetCmdBlk();
+
+ if ( !CmdBlkP ) {
+ rio_dprint(RIO_DEBUG_CMD, ("IDENTIFY RTA: GetCmdBlk failed\n"));
+ return ENXIO;
+ }
+
+ CmdBlkP->Packet.dest_unit = MapP->ID;
+ CmdBlkP->Packet.dest_port = BOOT_RUP;
+ CmdBlkP->Packet.src_unit = 0;
+ CmdBlkP->Packet.src_port = BOOT_RUP;
+ CmdBlkP->Packet.len = 0x84;
+ CmdBlkP->Packet.data[0] = IDENTIFY;
+ CmdBlkP->Packet.data[1] = 0;
+ CmdBlkP->Packet.data[2] = IdRta.ID;
+
+ if ( RIOQueueCmdBlk( HostP, MapP->ID-1, CmdBlkP)
+ == RIO_FAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("IDENTIFY RTA: Failed to queue command\n"));
+ return EIO;
+ }
+ return 0;
+ }
+ }
+ }
+ }
+ }
+ return ENOENT;
+}
+
+
+int
+RIOKillNeighbour(p, arg)
+struct rio_info * p;
+caddr_t arg;
+{
+ uint Host;
+ uint ID;
+ struct Host *HostP;
+ struct CmdBlk *CmdBlkP;
+
+ rio_dprint(RIO_DEBUG_CMD, ("KILL HOST NEIGHBOUR\n"));
+
+ if ( copyin( (int)arg, (caddr_t)&KillUnit,
+ sizeof(KillUnit) ) == COPYFAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("RIO_KILL_NEIGHBOUR copy failed\n"));
+ p->RIOError.Error = COPYIN_FAILED;
+ return EFAULT;
+ }
+
+ if ( KillUnit.Link > 3 )
+ return ENXIO;
+
+ CmdBlkP = RIOGetCmdBlk();
+
+ if ( !CmdBlkP ) {
+ rio_dprint(RIO_DEBUG_CMD, ("UFOAD: GetCmdBlk failed\n"));
+ return ENXIO;
+ }
+
+ CmdBlkP->Packet.dest_unit = 0;
+ CmdBlkP->Packet.src_unit = 0;
+ CmdBlkP->Packet.dest_port = BOOT_RUP;
+ CmdBlkP->Packet.src_port = BOOT_RUP;
+ CmdBlkP->Packet.len = 0x84;
+ CmdBlkP->Packet.data[0] = UFOAD;
+ CmdBlkP->Packet.data[1] = KillUnit.Link;
+ CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF;
+ CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF;
+
+ for ( Host = 0; Host < p->RIONumHosts; Host++ ) {
+ ID = 0;
+ HostP = &p->RIOHosts[Host];
+
+ if ( HostP->UniqueNum == KillUnit.UniqueNum ) {
+ if ( RIOQueueCmdBlk( HostP, RTAS_PER_HOST+KillUnit.Link,
+ CmdBlkP) == RIO_FAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("UFOAD: Failed queue command\n"));
+ return EIO;
+ }
+ return 0;
+ }
+
+ for ( ID=0; ID < RTAS_PER_HOST; ID++ ) {
+ if ( HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum ) {
+ CmdBlkP->Packet.dest_unit = ID+1;
+ if ( RIOQueueCmdBlk( HostP, ID, CmdBlkP) == RIO_FAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("UFOAD: Failed queue command\n"));
+ return EIO;
+ }
+ return 0;
+ }
+ }
+ }
+ RIOFreeCmdBlk( CmdBlkP );
+ return ENXIO;
+}
+
+int
+RIOSuspendBootRta(HostP, ID, Link)
+struct Host *HostP;
+int ID;
+int Link;
+{
+ struct CmdBlk *CmdBlkP;
+
+ rio_dprint(RIO_DEBUG_CMD, ("SUSPEND BOOT ON RTA ID %d, link %c\n", ID, 'A' + Link));
+
+ CmdBlkP = RIOGetCmdBlk();
+
+ if ( !CmdBlkP ) {
+ rio_dprint(RIO_DEBUG_CMD, ("SUSPEND BOOT ON RTA: GetCmdBlk failed\n"));
+ return ENXIO;
+ }
+
+ CmdBlkP->Packet.dest_unit = ID;
+ CmdBlkP->Packet.dest_port = BOOT_RUP;
+ CmdBlkP->Packet.src_unit = 0;
+ CmdBlkP->Packet.src_port = BOOT_RUP;
+ CmdBlkP->Packet.len = 0x84;
+ CmdBlkP->Packet.data[0] = IWAIT;
+ CmdBlkP->Packet.data[1] = Link;
+ CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF;
+ CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF;
+
+ if ( RIOQueueCmdBlk( HostP, ID - 1, CmdBlkP) == RIO_FAIL ) {
+ rio_dprint(RIO_DEBUG_CMD, ("SUSPEND BOOT ON RTA: Failed to queue iwait command\n"));
+ return EIO;
+ }
+ return 0;
+}
+
+int
+RIOFoadWakeup(p)
+struct rio_info * p;
+{
+ int port;
+ register struct Port *PortP;
+ unsigned long flags;
+
+ for ( port=0; port<RIO_PORTS; port++) {
+ PortP = p->RIOPortp[port];
+
+ rio_spin_lock_irqsave(&PortP->portSem, flags);
+ PortP->Config = 0;
+ PortP->State = 0;
+ PortP->InUse = NOT_INUSE;
+ PortP->PortState = 0;
+ PortP->FlushCmdBodge = 0;
+ PortP->ModemLines = 0;
+ PortP->ModemState = 0;
+ PortP->CookMode = 0;
+ PortP->ParamSem = 0;
+ PortP->Mapped = 0;
+ PortP->WflushFlag = 0;
+ PortP->MagicFlags = 0;
+ PortP->RxDataStart = 0;
+ PortP->TxBufferIn = 0;
+ PortP->TxBufferOut = 0;
+ rio_spin_unlock_irqrestore(&PortP->portSem, flags);
+ }
+ return(0);
+}
+
+/*
+** Incoming command on the COMMAND_RUP to be processed.
+*/
+int
+RIOCommandRup(p, Rup, HostP, PacketP)
+struct rio_info * p;
+uint Rup;
+struct Host *HostP;
+PKT *PacketP;
+{
+ struct PktCmd *PktCmdP = (struct PktCmd *)PacketP->data;
+ struct Port *PortP;
+ struct UnixRup *UnixRupP;
+ ushort SysPort;
+ ushort ReportedModemStatus;
+ ushort rup;
+ ushort subCommand;
+ unsigned long flags;
+
+
+#ifdef CHECK
+ CheckHost( Host );
+ CheckHostP( HostP );
+ CheckPacketP( PacketP );
+#endif
+
+ /*
+ ** 16 port RTA note:
+ ** Command rup packets coming from the RTA will have pkt->data[1] (which
+ ** translates to PktCmdP->PhbNum) set to the host port number for the
+ ** particular unit. To access the correct BaseSysPort for a 16 port RTA,
+ ** we can use PhbNum to get the rup number for the appropriate 8 port
+ ** block (for the first block, this should be equal to 'Rup').
+ */
+ rup = RBYTE(PktCmdP->PhbNum) / (ushort)PORTS_PER_RTA;
+ UnixRupP = &HostP->UnixRups[rup];
+ SysPort = UnixRupP->BaseSysPort +
+ (RBYTE(PktCmdP->PhbNum) % (ushort)PORTS_PER_RTA);
+ rio_dprint(RIO_DEBUG_CMD, ("Command on rup %d, port %d\n", rup, SysPort));
+
+#ifdef CHECK
+ CheckRup( rup );
+ CheckUnixRupP( UnixRupP );
+#endif
+ if ( UnixRupP->BaseSysPort == NO_PORT ) {
+ rio_dprint(RIO_DEBUG_CMD, ("OBSCURE ERROR!\n"));
+ rio_dprint(RIO_DEBUG_CMD, ("Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Support\n"));
+ rio_dprint(RIO_DEBUG_CMD, ("CONTROL information: Host number %d, name ``%s''\n",
+ HostP-p->RIOHosts, HostP->Name ));
+ rio_dprint(RIO_DEBUG_CMD, ("CONTROL information: Rup number 0x%x\n", rup));
+
+ if ( Rup >= (ushort)MAX_RUP )
+ rio_dprint(RIO_DEBUG_CMD, ("CONTROL information: This is the RUP for RTA ``%s''\n",
+ HostP->Mapping[Rup].Name ));
+ else
+ rio_dprint(RIO_DEBUG_CMD, ("CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", 'A' + Rup - MAX_RUP, HostP->Name ));
+
+ rio_dprint(RIO_DEBUG_CMD, ("PACKET information: Destination 0x%x:0x%x\n",
+ PacketP->dest_unit, PacketP->dest_port ));
+ rio_dprint(RIO_DEBUG_CMD, ("PACKET information: Source 0x%x:0x%x\n",
+ PacketP->src_unit, PacketP->src_port ));
+ rio_dprint(RIO_DEBUG_CMD, ("PACKET information: Length 0x%x (%d)\n", PacketP->len,PacketP->len ));
+ rio_dprint(RIO_DEBUG_CMD, ("PACKET information: Control 0x%x (%d)\n", PacketP->control, PacketP->control));
+ rio_dprint(RIO_DEBUG_CMD, ("PACKET information: Check 0x%x (%d)\n", PacketP->csum, PacketP->csum ));
+ rio_dprint(RIO_DEBUG_CMD, ("COMMAND information: Host Port Number 0x%x,
+ Command Code 0x%x\n", PktCmdP->PhbNum, PktCmdP->Command ));
+ return TRUE;
+ }
+
+#ifdef CHECK
+ CheckSysPort( SysPort );
+#endif
+ PortP = p->RIOPortp[ SysPort ];
+#if 0
+ ttyP = PortP->TtyP;
+#endif
+ rio_spin_lock_irqsave(&PortP->portSem, flags);
+ switch( RBYTE(PktCmdP->Command) ) {
+ case BREAK_RECEIVED:
+ rio_dprint(RIO_DEBUG_CMD, ("Received a break!\n"));
+ /* If the current line disc. is not multi-threading and
+ the current processor is not the default, reset rup_intr
+ and return FALSE to ensure that the command packet is
+ not freed. */
+ /* Call tmgr HANGUP HERE */
+ /* Fix this later when every thing works !!!! RAMRAJ */
+ break;
+
+ case COMPLETE:
+ rio_dprint(RIO_DEBUG_CMD, ("Command complete on phb %d host %d\n",
+ RBYTE(PktCmdP->PhbNum), HostP-p->RIOHosts));
+ subCommand = 1;
+ switch (RBYTE(PktCmdP->SubCommand)) {
+ case MEMDUMP :
+ rio_dprint(RIO_DEBUG_CMD, ("Memory dump cmd (0x%x) from addr 0x%x\n",
+ RBYTE(PktCmdP->SubCommand), RWORD(PktCmdP->SubAddr)));
+ break;
+ case READ_REGISTER :
+ rio_dprint(RIO_DEBUG_CMD, ("Read register (0x%x)\n", RWORD(PktCmdP->SubAddr)));
+ p->CdRegister = (RBYTE(PktCmdP->ModemStatus) & MSVR1_HOST);
+ break;
+ default :
+ subCommand = 0;
+ break;
+ }
+ if (subCommand)
+ break;
+ rio_dprint(RIO_DEBUG_CMD, ("New status is 0x%x was 0x%x\n",
+ RBYTE(PktCmdP->PortStatus),PortP->PortState));
+ if (PortP->PortState != RBYTE(PktCmdP->PortStatus)) {
+ rio_dprint(RIO_DEBUG_CMD, ("Mark status & wakeup\n"));
+ PortP->PortState = RBYTE(PktCmdP->PortStatus);
+ /* What should we do here ...
+ wakeup( &PortP->PortState );
+ */
+ }
+ else {
+ rio_dprint(RIO_DEBUG_CMD, ("No change\n"));
+ }
+
+ /* FALLTHROUGH */
+ case MODEM_STATUS:
+ /*
+ ** Knock out the tbusy and tstop bits, as these are not relevant
+ ** to the check for modem status change (they're just there because
+ ** it's a convenient place to put them!).
+ */
+ ReportedModemStatus = RBYTE(PktCmdP->ModemStatus);
+ if ((PortP->ModemState & MSVR1_HOST) ==
+ (ReportedModemStatus & MSVR1_HOST)) {
+ rio_dprint(RIO_DEBUG_CMD, ("Modem status unchanged 0x%x\n", PortP->ModemState));
+ /*
+ ** Update ModemState just in case tbusy or tstop states have
+ ** changed.
+ */
+ PortP->ModemState = ReportedModemStatus;
+ }
+ else {
+ rio_dprint(RIO_DEBUG_CMD, ("Modem status change from 0x%x to 0x%x\n",
+ PortP->ModemState, ReportedModemStatus));
+ PortP->ModemState = ReportedModemStatus;
+#ifdef MODEM_SUPPORT
+ if ( PortP->Mapped ) {
+ /***********************************************************\
+ *************************************************************
+ *** ***
+ *** M O D E M S T A T E C H A N G E ***
+ *** ***
+ *************************************************************
+ \***********************************************************/
+ /*
+ ** If the device is a modem, then check the modem
+ ** carrier.
+ */
+ if(!(ttyP->t_cflag & CLOCAL) &&
+ ((PortP->State & (RIO_MOPEN|RIO_WOPEN))))
+ {
+ /*
+ ** Is there a carrier?
+ */
+ if ( PortP->ModemState & MSVR1_CD )
+ {
+ /*
+ ** Has carrier just appeared?
+ */
+ if (!(ttyP->t_state & CARR_ON))
+ {
+ rio_dprint(RIO_DEBUG_CMD, PortP,DBG_MODEM,"Carrier just came up.\n");
+ ttyP->t_state |=CARR_ON;
+ /*
+ ** wakeup anyone in WOPEN
+ */
+ if ( ttyP->t_state & (ISOPEN|WOPEN) )
+ wakeup((caddr_t)&ttyP->t_canq);
+#ifdef STATS
+ PortP->Stat.ModemOnCnt++;
+#endif
+ }
+ }
+ else
+ {
+ /*
+ ** Has carrier just dropped?
+ */
+ if (ttyP->t_state & CARR_ON)
+ {
+ /*
+ ** send SIGHUP to the process group
+ */
+ if ( ttyP->t_state & (ISOPEN|WOPEN) )
+ {
+ signal(ttyP->t_pgrp,SIGHUP);
+ ttyflush(ttyP,(FREAD|FWRITE));
+ }
+ ttyP->t_state &= ~CARR_ON;
+ wakeup( (caddr_t)&PortP->TxBufferOut );
+ wakeup( (caddr_t)&PortP->TxBufferIn );
+ rio_dprint(RIO_DEBUG_CMD, PortP,DBG_MODEM,"Carrier just went down.\n");
+#ifdef STATS
+ PortP->Stat.ModemOffCnt++;
+#endif
+ }
+ }
+ }
+ }
+#endif
+ }
+ break;
+
+ default:
+ rio_dprint(RIO_DEBUG_CMD, ("Unknown command %d on CMD_RUP of host %d\n",
+ RBYTE(PktCmdP->Command),HostP-p->RIOHosts));
+ break;
+ }
+ rio_spin_unlock_irqrestore(&PortP->portSem, flags);
+ return TRUE;
+}
+/*
+** The command mechanism:
+** Each rup has a chain of commands associated with it.
+** This chain is maintained by routines in this file.
+** Periodically we are called and we run a quick check of all the
+** active chains to determine if there is a command to be executed,
+** and if the rup is ready to accept it.
+**
+*/
+
+/*
+** Allocate an empty command block.
+*/
+struct CmdBlk *
+RIOGetCmdBlk()
+{
+ struct CmdBlk *CmdBlkP;
+
+ CmdBlkP = (struct CmdBlk *)sysbrk(sizeof(struct CmdBlk));
+ bzero(CmdBlkP, sizeof(struct CmdBlk));
+
+ return CmdBlkP;
+}
+
+/*
+** Return a block to the head of the free list.
+*/
+void
+RIOFreeCmdBlk(CmdBlkP)
+struct CmdBlk *CmdBlkP;
+{
+ sysfree((void *)CmdBlkP, sizeof(struct CmdBlk));
+}
+
+/*
+** attach a command block to the list of commands to be performed for
+** a given rup.
+*/
+int
+RIOQueueCmdBlk(HostP, Rup, CmdBlkP)
+struct Host *HostP;
+uint Rup;
+struct CmdBlk *CmdBlkP;
+{
+ struct CmdBlk **Base;
+ struct UnixRup *UnixRupP;
+ unsigned long flags;
+
+#ifdef CHECK
+ CheckHostP( HostP );
+ CheckRup( Rup );
+ CheckCmdBlkP( CmdBlkP );
+#endif
+
+ rio_dprint(RIO_DEBUG_CMD, ("RIOQueueCmdBlk(Host, Rup %d, 0x%x)\n", Rup, (int)CmdBlkP ));
+
+ if ( Rup >= (ushort)(MAX_RUP+LINKS_PER_UNIT) ) {
+ rio_dprint(RIO_DEBUG_CMD, ("Illegal rup number %d in RIOQueueCmdBlk\n",Rup));
+ RIOFreeCmdBlk( CmdBlkP );
+ return RIO_FAIL;
+ }
+
+ UnixRupP = &HostP->UnixRups[Rup];
+
+ rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
+
+ /*
+ ** If the RUP is currently inactive, then put the request
+ ** straight on the RUP....
+ */
+ if ( (UnixRupP->CmdsWaitingP == NULL) && (UnixRupP->CmdPendingP == NULL) &&
+ (RWORD(UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) &&
+ (CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP)(CmdBlkP->PreArg,CmdBlkP)
+ :TRUE)) {
+ rio_dprint(RIO_DEBUG_CMD, ("RUP inactive-placing command straight on. Cmd byte is 0x%x\n",
+ CmdBlkP->Packet.data[0]));
+
+ /*
+ ** Whammy! blat that pack!
+ */
+ HostP->Copy( (caddr_t)&CmdBlkP->Packet,
+ RIO_PTR(HostP->Caddr, UnixRupP->RupP->txpkt ), sizeof(PKT) );
+
+ /*
+ ** place command packet on the pending position.
+ */
+ UnixRupP->CmdPendingP = CmdBlkP;
+
+ /*
+ ** set the command register
+ */
+ WWORD(UnixRupP->RupP->txcontrol , TX_PACKET_READY);
+
+ rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
+
+ return RIO_SUCCESS;
+ }
+
+ rio_dprint(RIO_DEBUG_CMD, ("RUP active - en-queing\n"));
+
+ if ( UnixRupP->CmdsWaitingP != NULL)
+ rio_dprint(RIO_DEBUG_CMD, ("Rup active - command waiting\n"));
+ if ( UnixRupP->CmdPendingP != NULL )
+ rio_dprint(RIO_DEBUG_CMD, ("Rup active - command pending\n"));
+ if ( RWORD(UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE )
+ rio_dprint(RIO_DEBUG_CMD, ("Rup active - command rup not ready\n"));
+
+ Base = &UnixRupP->CmdsWaitingP;
+
+ rio_dprint(RIO_DEBUG_CMD, ("First try to queue cmdblk 0x%x at 0x%x\n",(int)CmdBlkP,(int)Base));
+
+ while ( *Base ) {
+ rio_dprint(RIO_DEBUG_CMD, ("Command cmdblk 0x%x here\n",(int)(*Base)));
+ Base = &((*Base)->NextP);
+ rio_dprint(RIO_DEBUG_CMD, ("Now try to queue cmd cmdblk 0x%x at 0x%x\n",
+ (int)CmdBlkP,(int)Base));
+ }
+
+ rio_dprint(RIO_DEBUG_CMD, ("Will queue cmdblk 0x%x at 0x%x\n",(int)CmdBlkP,(int)Base));
+
+ *Base = CmdBlkP;
+
+ CmdBlkP->NextP = NULL;
+
+ rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
+
+ return RIO_SUCCESS;
+}
+
+/*
+** Here we go - if there is an empty rup, fill it!
+** must be called at splrio() or higher.
+*/
+void
+RIOPollHostCommands(p, HostP)
+struct rio_info * p;
+struct Host * HostP;
+{
+ register struct CmdBlk *CmdBlkP;
+ register struct UnixRup *UnixRupP;
+ struct PKT *PacketP;
+ ushort Rup;
+ unsigned long flags;
+
+
+ Rup = MAX_RUP+LINKS_PER_UNIT;
+
+ do { /* do this loop for each RUP */
+ /*
+ ** locate the rup we are processing & lock it
+ */
+ UnixRupP = &HostP->UnixRups[--Rup];
+
+ spin_lock_irqsave(&UnixRupP->RupLock, flags);
+
+ /*
+ ** First check for incoming commands:
+ */
+ if ( RWORD(UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE ) {
+ int FreeMe;
+
+ /* rio_dprint(RIO_DEBUG_CMD, ("RIORupCmd( %d, %d )\n", HostP-p->RIOHosts, Rup )); */
+
+ PacketP =(PKT *)RIO_PTR(HostP->Caddr,RWORD(UnixRupP->RupP->rxpkt));
+
+ ShowPacket( DBG_CMD, PacketP );
+
+ switch ( RBYTE(PacketP->dest_port) ) {
+ case BOOT_RUP:
+ rio_dprint(RIO_DEBUG_CMD, ("Incoming Boot %s packet '%x'\n",
+ RBYTE(PacketP->len) & 0x80 ? "Command":"Data",
+ RBYTE(PacketP->data[0]) ));
+ rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
+ FreeMe= RIOBootRup(p, Rup,HostP,PacketP);
+ rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
+ break;
+
+ case COMMAND_RUP:
+ /*
+ ** Free the RUP lock as loss of carrier causes a
+ ** ttyflush which will (eventually) call another
+ ** routine that uses the RUP lock.
+ */
+ rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
+ FreeMe= RIOCommandRup(p, Rup,HostP,PacketP);
+ if (PacketP->data[5] == MEMDUMP) {
+ rio_dprint(RIO_DEBUG_CMD, ("Memdump from 0x%x complete\n",
+ *(ushort *) &(PacketP->data[6])));
+ HostP->Copy( (caddr_t)&(PacketP->data[8]),
+ (caddr_t)p->RIOMemDump, 32 );
+ }
+ rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
+ break;
+
+ case ROUTE_RUP:
+ rio_spin_unlock_irqrestore( &UnixRupP->RupLock, flags);
+ FreeMe = RIORouteRup(p, Rup, HostP, PacketP );
+ rio_spin_lock_irqsave( &UnixRupP->RupLock, flags );
+ break;
+
+ default:
+ rio_dprint(RIO_DEBUG_CMD, ("Unknown RUP %d\n", RBYTE(PacketP->dest_port)));
+ FreeMe = 1;
+ break;
+ }
+
+ if ( FreeMe ) {
+ rio_dprint(RIO_DEBUG_CMD, ("Free processed incoming command packet\n"));
+ put_free_end(HostP,PacketP);
+
+ WWORD(UnixRupP->RupP->rxcontrol , RX_RUP_INACTIVE);
+
+ if ( RWORD(UnixRupP->RupP->handshake)==PHB_HANDSHAKE_SET ) {
+ rio_dprint(RIO_DEBUG_CMD, ("Handshake rup %d\n",Rup));
+ WWORD(UnixRupP->RupP->handshake,
+ PHB_HANDSHAKE_SET|PHB_HANDSHAKE_RESET);
+ }
+ }
+ }
+
+ /*
+ ** IF a command was running on the port,
+ ** and it has completed, then tidy it up.
+ */
+ if ( (CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */
+ (RWORD(UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) ) {
+ /*
+ ** we are idle.
+ ** there is a command in pending.
+ ** Therefore, this command has finished.
+ ** So, wakeup whoever is waiting for it (and tell them
+ ** what happened).
+ */
+ if ( CmdBlkP->Packet.dest_port == BOOT_RUP )
+ rio_dprint(RIO_DEBUG_CMD, ("Free Boot %s Command Block '%x'\n",
+ CmdBlkP->Packet.len & 0x80 ? "Command":"Data",
+ CmdBlkP->Packet.data[0] ));
+
+ rio_dprint(RIO_DEBUG_CMD, ("Command 0x%x completed\n",(int)CmdBlkP));
+
+ /*
+ ** Clear the Rup lock to prevent mutual exclusion.
+ */
+ if ( CmdBlkP->PostFuncP ) {
+ rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
+ (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg,CmdBlkP);
+ rio_spin_lock_irqsave(&UnixRupP->RupLock, flags);
+ }
+
+ /*
+ ** ....clear the pending flag....
+ */
+ UnixRupP->CmdPendingP = NULL;
+
+ /*
+ ** ....and return the command block to the freelist.
+ */
+ RIOFreeCmdBlk( CmdBlkP );
+ }
+
+ /*
+ ** If there is a command for this rup, and the rup
+ ** is idle, then process the command
+ */
+ if ( (CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */
+ (UnixRupP->CmdPendingP == NULL) &&
+ (RWORD(UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) ) {
+ /*
+ ** if the pre-function is non-zero, call it.
+ ** If it returns RIO_FAIL then don't
+ ** send this command yet!
+ */
+#ifdef CHECK
+CheckCmdBlkP( CmdBlkP );
+#endif
+ if ( !(CmdBlkP->PreFuncP ?
+ (*CmdBlkP->PreFuncP)(CmdBlkP->PreArg, CmdBlkP) : TRUE)) {
+ rio_dprint(RIO_DEBUG_CMD, ("Not ready to start command 0x%x\n",(int)CmdBlkP));
+ }
+ else {
+ rio_dprint(RIO_DEBUG_CMD, ("Start new command 0x%x Cmd byte is 0x%x\n",
+ (int)CmdBlkP, CmdBlkP->Packet.data[0]));
+ /*
+ ** Whammy! blat that pack!
+ */
+#ifdef CHECK
+CheckPacketP( (PKT *)RIO_PTR(HostP->Caddr,UnixRupP->RupP->txpkt) );
+#endif
+ HostP->Copy( (caddr_t)&CmdBlkP->Packet,
+ RIO_PTR(HostP->Caddr, UnixRupP->RupP->txpkt), sizeof(PKT));
+
+ /*
+ ** remove the command from the rup command queue...
+ */
+ UnixRupP->CmdsWaitingP = CmdBlkP->NextP;
+
+ /*
+ ** ...and place it on the pending position.
+ */
+ UnixRupP->CmdPendingP = CmdBlkP;
+
+ /*
+ ** set the command register
+ */
+ WWORD(UnixRupP->RupP->txcontrol,TX_PACKET_READY);
+
+ /*
+ ** the command block will be freed
+ ** when the command has been processed.
+ */
+ }
+ }
+ spin_unlock_irqrestore(&UnixRupP->RupLock, flags);
+ } while ( Rup );
+}
+
+
+/*
+** Return the length of the named string
+*/
+int
+RIOStrlen(Str)
+register char *Str;
+{
+ register int len = 0;
+
+ while ( *Str++ )
+ len++;
+ return len;
+}
+
+/*
+** compares s1 to s2 and return 0 if they match.
+*/
+int
+RIOStrCmp(s1, s2)
+register char *s1;
+register char *s2;
+{
+ while ( *s1 && *s2 && *s1==*s2 )
+ s1++, s2++;
+ return *s1-*s2;
+}
+
+/*
+** compares s1 to s2 for upto n bytes and return 0 if they match.
+*/
+int
+RIOStrnCmp(s1, s2, n)
+register char *s1;
+register char *s2;
+int n;
+{
+ while ( n && *s1 && *s2 && *s1==*s2 )
+ n--, s1++, s2++;
+ return n ? *s1!=*s2 : 0;
+}
+
+/*
+** copy up to 'len' bytes from 'from' to 'to'.
+*/
+void
+RIOStrNCpy(to, from, len)
+char *to;
+char *from;
+int len;
+{
+ while ( len-- && (*to++ = *from++) )
+ ;
+ to[-1]='\0';
+}
+
+int
+RIOWFlushMark(iPortP, CmdBlkP)
+int iPortP;
+struct CmdBlk *CmdBlkP;
+{
+ struct Port * PortP = (struct Port *)iPortP;
+ unsigned long flags;
+
+ rio_spin_lock_irqsave(&PortP->portSem, flags);
+#ifdef CHECK
+ CheckPortP( PortP );
+#endif
+ PortP->WflushFlag++;
+ PortP->MagicFlags |= MAGIC_FLUSH;
+ rio_spin_unlock_irqrestore(&PortP->portSem, flags);
+ return RIOUnUse( iPortP, CmdBlkP );
+}
+
+int
+RIORFlushEnable(iPortP, CmdBlkP)
+int iPortP;
+struct CmdBlk *CmdBlkP;
+{
+ struct Port * PortP = (struct Port *)iPortP;
+ PKT *PacketP;
+ unsigned long flags;
+
+ rio_spin_lock_irqsave(&PortP->portSem, flags);
+
+ while ( can_remove_receive(&PacketP, PortP) ) {
+ remove_receive(PortP);
+ ShowPacket(DBG_PROC, PacketP );
+ put_free_end( PortP->HostP, PacketP );
+ }
+
+ if ( RWORD(PortP->PhbP->handshake)==PHB_HANDSHAKE_SET ) {
+ /*
+ ** MAGIC! (Basically, handshake the RX buffer, so that
+ ** the RTAs upstream can be re-enabled.)
+ */
+ rio_dprint(RIO_DEBUG_CMD, ("Util: Set RX handshake bit\n"));
+ WWORD(PortP->PhbP->handshake, PHB_HANDSHAKE_SET|PHB_HANDSHAKE_RESET);
+ }
+ rio_spin_unlock_irqrestore(&PortP->portSem, flags);
+ return RIOUnUse( iPortP, CmdBlkP );
+}
+
+int
+RIOUnUse(iPortP, CmdBlkP)
+int iPortP;
+struct CmdBlk *CmdBlkP;
+{
+ struct Port * PortP = (struct Port *)iPortP;
+ unsigned long flags;
+
+ rio_spin_lock_irqsave(&PortP->portSem, flags);
+
+#ifdef CHECK
+ CheckPortP( PortP );
+#endif
+ rio_dprint(RIO_DEBUG_CMD, ("Decrement in use count for port\n"));
+
+ if (PortP->InUse) {
+ if ( --PortP->InUse != NOT_INUSE ) {
+ rio_spin_unlock_irqrestore(&PortP->portSem, flags);
+ return 0;
+ }
+ }
+ /*
+ ** While PortP->InUse is set (i.e. a preemptive command has been sent to
+ ** the RTA and is awaiting completion), any transmit data is prevented from
+ ** being transferred from the write queue into the transmit packets
+ ** (add_transmit) and no furthur transmit interrupt will be sent for that
+ ** data. The next interrupt will occur up to 500ms later (RIOIntr is called
+ ** twice a second as a saftey measure). This was the case when kermit was
+ ** used to send data into a RIO port. After each packet was sent, TCFLSH
+ ** was called to flush the read queue preemptively. PortP->InUse was
+ ** incremented, thereby blocking the 6 byte acknowledgement packet
+ ** transmitted back. This acknowledgment hung around for 500ms before
+ ** being sent, thus reducing input performance substantially!.
+ ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data
+ ** hanging around in the transmit buffer is sent immediately.
+ */
+ WWORD(PortP->HostP->ParmMapP->tx_intr, 1);
+ /* What to do here ..
+ wakeup( (caddr_t)&(PortP->InUse) );
+ */
+ rio_spin_unlock_irqrestore(&PortP->portSem, flags);
+ return 0;
+}
+
+void
+ShowPacket(Flags, PacketP)
+uint Flags;
+struct PKT *PacketP;
+{
+}
+
+/*
+**
+** How to use this file:
+**
+** To send a command down a rup, you need to allocate a command block, fill
+** in the packet information, fill in the command number, fill in the pre-
+** and post- functions and arguments, and then add the command block to the
+** queue of command blocks for the port in question. When the port is idle,
+** then the pre-function will be called. If this returns RIO_FAIL then the
+** command will be re-queued and tried again at a later date (probably in one
+** clock tick). If the pre-function returns NOT RIO_FAIL, then the command
+** packet will be queued on the RUP, and the txcontrol field set to the
+** command number. When the txcontrol field has changed from being the
+** command number, then the post-function will be called, with the argument
+** specified earlier, a pointer to the command block, and the value of
+** txcontrol.
+**
+** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer
+** to the command block structure allocated, or NULL if there aren't any.
+** The block will have been zeroed for you.
+**
+** The structure has the following fields:
+**
+** struct CmdBlk
+** {
+** struct CmdBlk *NextP; ** Pointer to next command block **
+** struct PKT Packet; ** A packet, to copy to the rup **
+** int (*PreFuncP)(); ** The func to call to check if OK **
+** int PreArg; ** The arg for the func **
+** int (*PostFuncP)(); ** The func to call when completed **
+** int PostArg; ** The arg for the func **
+** };
+**
+** You need to fill in ALL fields EXCEPT NextP, which is used to link the
+** blocks together either on the free list or on the Rup list.
+**
+** Packet is an actual packet structure to be filled in with the packet
+** information associated with the command. You need to fill in everything,
+** as the command processore doesn't process the command packet in any way.
+**
+** The PreFuncP is called before the packet is enqueued on the host rup.
+** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must
+** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL
+** if the packet is NOT to be queued.
+**
+** The PostFuncP is called when the command has completed. It is called
+** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected
+** to return a value. PostFuncP does NOT need to free the command block,
+** as this happens automatically after PostFuncP returns.
+**
+** Once the command block has been filled in, it is attached to the correct
+** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is
+** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer
+** to it!), and CmdBlkP is the pointer to the command block allocated using
+** RIOGetCmdBlk().
+**
+*/
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)