riocmd.c
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上传日期:2013-02-24
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- /*
- ** -----------------------------------------------------------------------------
- **
- ** 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/slab.h>
- #include <linux/errno.h>
- #include <linux/tty.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_dprintk (RIO_DEBUG_CMD, "FOAD RTAn");
- CmdBlkP = RIOGetCmdBlk();
- if ( !CmdBlkP ) {
- rio_dprintk (RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failedn");
- 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_dprintk (RIO_DEBUG_CMD, "FOAD RTA: Failed to queue foad commandn");
- return EIO;
- }
- return 0;
- }
- int
- RIOZombieRta(HostP, MapP)
- struct Host * HostP;
- struct Map * MapP;
- {
- struct CmdBlk *CmdBlkP;
- rio_dprintk (RIO_DEBUG_CMD, "ZOMBIE RTAn");
- CmdBlkP = RIOGetCmdBlk();
- if ( !CmdBlkP ) {
- rio_dprintk (RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failedn");
- 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_dprintk (RIO_DEBUG_CMD, "ZOMBIE RTA: Failed to queue zombie commandn");
- 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_dprintk (RIO_DEBUG_CMD, "Command RTA 0x%x func 0x%xn", 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_dprintk (RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failedn");
- 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_dprintk (RIO_DEBUG_CMD, "IDENTIFY RTAn");
- CmdBlkP = RIOGetCmdBlk();
- if ( !CmdBlkP ) {
- rio_dprintk (RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failedn");
- 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_dprintk (RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue commandn");
- 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_dprintk (RIO_DEBUG_CMD, "KILL HOST NEIGHBOURn");
- if ( copyin( (int)arg, (caddr_t)&KillUnit, sizeof(KillUnit) ) == COPYFAIL ) {
- rio_dprintk (RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failedn");
- p->RIOError.Error = COPYIN_FAILED;
- return EFAULT;
- }
- if ( KillUnit.Link > 3 )
- return ENXIO;
-
- CmdBlkP = RIOGetCmdBlk();
- if ( !CmdBlkP ) {
- rio_dprintk (RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failedn");
- 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_dprintk (RIO_DEBUG_CMD, "UFOAD: Failed queue commandn");
- 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_dprintk (RIO_DEBUG_CMD, "UFOAD: Failed queue commandn");
- return EIO;
- }
- return 0;
- }
- }
- }
- RIOFreeCmdBlk( CmdBlkP );
- return ENXIO;
- }
- int
- RIOSuspendBootRta(HostP, ID, Link)
- struct Host *HostP;
- int ID;
- int Link;
- {
- struct CmdBlk *CmdBlkP;
- rio_dprintk (RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA ID %d, link %cn", ID, 'A' + Link);
- CmdBlkP = RIOGetCmdBlk();
- if ( !CmdBlkP ) {
- rio_dprintk (RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failedn");
- 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_dprintk (RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: Failed to queue iwait commandn");
- 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;
- func_enter ();
- #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_dprintk (RIO_DEBUG_CMD, "Command on rup %d, port %dn", rup, SysPort);
- #ifdef CHECK
- CheckRup( rup );
- CheckUnixRupP( UnixRupP );
- #endif
- if ( UnixRupP->BaseSysPort == NO_PORT ) {
- rio_dprintk (RIO_DEBUG_CMD, "OBSCURE ERROR!n");
- rio_dprintk (RIO_DEBUG_CMD, "Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Supportn");
- rio_dprintk (RIO_DEBUG_CMD, "CONTROL information: Host number %d, name ``%s''n",
- HostP-p->RIOHosts, HostP->Name );
- rio_dprintk (RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%xn", rup);
- if ( Rup >= (ushort)MAX_RUP ) {
- rio_dprintk (RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''n",
- HostP->Mapping[Rup].Name);
- } else
- rio_dprintk (RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''n",
- ('A' + Rup - MAX_RUP), HostP->Name);
- rio_dprintk (RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%xn",
- PacketP->dest_unit, PacketP->dest_port );
- rio_dprintk (RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%xn",
- PacketP->src_unit, PacketP->src_port );
- rio_dprintk (RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)n", PacketP->len,PacketP->len );
- rio_dprintk (RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)n", PacketP->control, PacketP->control);
- rio_dprintk (RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)n", PacketP->csum, PacketP->csum );
- rio_dprintk (RIO_DEBUG_CMD, "COMMAND information: Host Port Number 0x%x,
- Command Code 0x%xn", PktCmdP->PhbNum, PktCmdP->Command );
- return TRUE;
- }
- #ifdef CHECK
- CheckSysPort( SysPort );
- #endif
- PortP = p->RIOPortp[ SysPort ];
- rio_spin_lock_irqsave(&PortP->portSem, flags);
- switch( RBYTE(PktCmdP->Command) ) {
- case BREAK_RECEIVED:
- rio_dprintk (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 */
- gs_got_break (&PortP->gs);
- break;
- case COMPLETE:
- rio_dprintk (RIO_DEBUG_CMD, "Command complete on phb %d host %dn",
- RBYTE(PktCmdP->PhbNum), HostP-p->RIOHosts);
- subCommand = 1;
- switch (RBYTE(PktCmdP->SubCommand)) {
- case MEMDUMP :
- rio_dprintk (RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%xn",
- RBYTE(PktCmdP->SubCommand), RWORD(PktCmdP->SubAddr));
- break;
- case READ_REGISTER :
- rio_dprintk (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_dprintk (RIO_DEBUG_CMD, "New status is 0x%x was 0x%xn",
- RBYTE(PktCmdP->PortStatus),PortP->PortState);
- if (PortP->PortState != RBYTE(PktCmdP->PortStatus)) {
- rio_dprintk (RIO_DEBUG_CMD, "Mark status & wakeupn");
- PortP->PortState = RBYTE(PktCmdP->PortStatus);
- /* What should we do here ...
- wakeup( &PortP->PortState );
- */
- } else
- rio_dprintk (RIO_DEBUG_CMD, "No changen");
- /* 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_dprintk (RIO_DEBUG_CMD, "Modem status unchanged 0x%xn", PortP->ModemState);
- /*
- ** Update ModemState just in case tbusy or tstop states have
- ** changed.
- */
- PortP->ModemState = ReportedModemStatus;
- }
- else {
- rio_dprintk (RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%xn",
- 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 (PortP->gs.tty == NULL)
- break;
- if (PortP->gs.tty->termios == NULL)
- break;
-
- if (!(PortP->gs.tty->termios->c_cflag & CLOCAL) &&
- ((PortP->State & (RIO_MOPEN|RIO_WOPEN)))) {
- rio_dprintk (RIO_DEBUG_CMD, "Is there a Carrier?n");
- /*
- ** Is there a carrier?
- */
- if ( PortP->ModemState & MSVR1_CD ) {
- /*
- ** Has carrier just appeared?
- */
- if (!(PortP->State & RIO_CARR_ON)) {
- rio_dprintk (RIO_DEBUG_CMD, "Carrier just came up.n");
- PortP->State |= RIO_CARR_ON;
- /*
- ** wakeup anyone in WOPEN
- */
- if (PortP->State & (PORT_ISOPEN | RIO_WOPEN) )
- wake_up_interruptible (&PortP->gs.open_wait);
- #ifdef STATS
- PortP->Stat.ModemOnCnt++;
- #endif
- }
- } else {
- /*
- ** Has carrier just dropped?
- */
- if (PortP->State & RIO_CARR_ON) {
- if (PortP->State & (PORT_ISOPEN|RIO_WOPEN|RIO_MOPEN))
- tty_hangup (PortP->gs.tty);
- PortP->State &= ~RIO_CARR_ON;
- rio_dprintk (RIO_DEBUG_CMD, "Carrirer just went downn");
- #ifdef STATS
- PortP->Stat.ModemOffCnt++;
- #endif
- }
- }
- }
- }
- #endif
- }
- break;
- default:
- rio_dprintk (RIO_DEBUG_CMD, "Unknown command %d on CMD_RUP of host %dn",
- RBYTE(PktCmdP->Command),HostP-p->RIOHosts);
- break;
- }
- rio_spin_unlock_irqrestore(&PortP->portSem, flags);
- func_exit ();
- 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));
- if (CmdBlkP)
- 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
- if ( Rup >= (ushort)(MAX_RUP+LINKS_PER_UNIT) ) {
- rio_dprintk (RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlkn",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_dprintk (RIO_DEBUG_CMD, "RUP inactive-placing command straight on. Cmd byte is 0x%xn",
- 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_dprintk (RIO_DEBUG_CMD, "RUP active - en-queingn");
- if ( UnixRupP->CmdsWaitingP != NULL)
- rio_dprintk (RIO_DEBUG_CMD, "Rup active - command waitingn");
- if ( UnixRupP->CmdPendingP != NULL )
- rio_dprintk (RIO_DEBUG_CMD, "Rup active - command pendingn");
- if ( RWORD(UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE )
- rio_dprintk (RIO_DEBUG_CMD, "Rup active - command rup not readyn");
- Base = &UnixRupP->CmdsWaitingP;
- rio_dprintk (RIO_DEBUG_CMD, "First try to queue cmdblk 0x%x at 0x%xn", (int)CmdBlkP,(int)Base);
- while ( *Base ) {
- rio_dprintk (RIO_DEBUG_CMD, "Command cmdblk 0x%x heren", (int)(*Base));
- Base = &((*Base)->NextP);
- rio_dprintk (RIO_DEBUG_CMD, "Now try to queue cmd cmdblk 0x%x at 0x%xn",
- (int)CmdBlkP,(int)Base);
- }
- rio_dprintk (RIO_DEBUG_CMD, "Will queue cmdblk 0x%x at 0x%xn",(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;
- PacketP =(PKT *)RIO_PTR(HostP->Caddr,RWORD(UnixRupP->RupP->rxpkt));
- ShowPacket( DBG_CMD, PacketP );
- switch ( RBYTE(PacketP->dest_port) ) {
- case BOOT_RUP:
- rio_dprintk (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_dprintk (RIO_DEBUG_CMD, "Memdump from 0x%x completen",
- *(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_dprintk (RIO_DEBUG_CMD, "Unknown RUP %dn", RBYTE(PacketP->dest_port));
- FreeMe = 1;
- break;
- }
- if ( FreeMe ) {
- rio_dprintk (RIO_DEBUG_CMD, "Free processed incoming command packetn");
- put_free_end(HostP,PacketP);
- WWORD(UnixRupP->RupP->rxcontrol , RX_RUP_INACTIVE);
- if ( RWORD(UnixRupP->RupP->handshake)==PHB_HANDSHAKE_SET ) {
- rio_dprintk (RIO_DEBUG_CMD, "Handshake rup %dn",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_dprintk (RIO_DEBUG_CMD, "Free Boot %s Command Block '%x'n",
- CmdBlkP->Packet.len & 0x80 ? "Command":"Data",
- CmdBlkP->Packet.data[0]);
- rio_dprintk (RIO_DEBUG_CMD, "Command 0x%x completedn",(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_dprintk (RIO_DEBUG_CMD, "Not ready to start command 0x%xn",(int)CmdBlkP);
- }
- else {
- rio_dprintk (RIO_DEBUG_CMD, "Start new command 0x%x Cmd byte is 0x%xn",
- (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]=' ';
- }
- 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_dprintk (RIO_DEBUG_CMD, "Util: Set RX handshake bitn");
- 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_dprintk (RIO_DEBUG_CMD, "Decrement in use count for portn");
- 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().
- **
- */