diff options
Diffstat (limited to 'drivers/char/rio/riointr.c')
-rw-r--r-- | drivers/char/rio/riointr.c | 311 |
1 files changed, 35 insertions, 276 deletions
diff --git a/drivers/char/rio/riointr.c b/drivers/char/rio/riointr.c index 34d8787557a..ec415ccbc4f 100644 --- a/drivers/char/rio/riointr.c +++ b/drivers/char/rio/riointr.c @@ -101,8 +101,7 @@ static char *firstchars(char *p, int nch) #define INCR( P, I ) ((P) = (((P)+(I)) & p->RIOBufferMask)) /* Enable and start the transmission of packets */ -void RIOTxEnable(en) -char *en; +void RIOTxEnable(char *en) { struct Port *PortP; struct rio_info *p; @@ -186,10 +185,8 @@ char *en; static int RupIntr; static int RxIntr; static int TxIntr; -void RIOServiceHost(p, HostP, From) -struct rio_info *p; -struct Host *HostP; -int From; + +void RIOServiceHost(struct rio_info *p, struct Host *HostP, int From) { rio_spin_lock(&HostP->HostLock); if ((HostP->Flags & RUN_STATE) != RC_RUNNING) { @@ -201,22 +198,22 @@ int From; } rio_spin_unlock(&HostP->HostLock); - if (RWORD(HostP->ParmMapP->rup_intr)) { - WWORD(HostP->ParmMapP->rup_intr, 0); + if (readw(&HostP->ParmMapP->rup_intr)) { + writew(0, &HostP->ParmMapP->rup_intr); p->RIORupCount++; RupIntr++; - rio_dprintk(RIO_DEBUG_INTR, "rio: RUP interrupt on host %d\n", HostP - p->RIOHosts); + rio_dprintk(RIO_DEBUG_INTR, "rio: RUP interrupt on host %Zd\n", HostP - p->RIOHosts); RIOPollHostCommands(p, HostP); } - if (RWORD(HostP->ParmMapP->rx_intr)) { + if (readw(&HostP->ParmMapP->rx_intr)) { int port; - WWORD(HostP->ParmMapP->rx_intr, 0); + writew(0, &HostP->ParmMapP->rx_intr); p->RIORxCount++; RxIntr++; - rio_dprintk(RIO_DEBUG_INTR, "rio: RX interrupt on host %d\n", HostP - p->RIOHosts); + rio_dprintk(RIO_DEBUG_INTR, "rio: RX interrupt on host %Zd\n", HostP - p->RIOHosts); /* ** Loop through every port. If the port is mapped into ** the system ( i.e. has /dev/ttyXXXX associated ) then it is @@ -277,26 +274,26 @@ int From; ** it's handshake bit is set, then we must clear the handshake, ** so that that downstream RTA is re-enabled. */ - if (!can_remove_receive(&PacketP, PortP) && (RWORD(PortP->PhbP->handshake) == PHB_HANDSHAKE_SET)) { + if (!can_remove_receive(&PacketP, PortP) && (readw(&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_INTR, "Set RX handshake bit\n"); - WWORD(PortP->PhbP->handshake, PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET); + writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); } rio_spin_unlock(&PortP->portSem); } } - if (RWORD(HostP->ParmMapP->tx_intr)) { + if (readw(&HostP->ParmMapP->tx_intr)) { int port; - WWORD(HostP->ParmMapP->tx_intr, 0); + writew(0, &HostP->ParmMapP->tx_intr); p->RIOTxCount++; TxIntr++; - rio_dprintk(RIO_DEBUG_INTR, "rio: TX interrupt on host %d\n", HostP - p->RIOHosts); + rio_dprintk(RIO_DEBUG_INTR, "rio: TX interrupt on host %Zd\n", HostP - p->RIOHosts); /* ** Loop through every port. @@ -445,9 +442,9 @@ int From; */ PktCmdP = (struct PktCmd *) &PacketP->data[0]; - WBYTE(PktCmdP->Command, WFLUSH); + writeb(WFLUSH, &PktCmdP->Command); - p = PortP->HostPort % (ushort) PORTS_PER_RTA; + p = PortP->HostPort % (u16) PORTS_PER_RTA; /* ** If second block of ports for 16 port RTA, add 8 @@ -456,27 +453,27 @@ int From; if (PortP->SecondBlock) p += PORTS_PER_RTA; - WBYTE(PktCmdP->PhbNum, p); + writeb(p, &PktCmdP->PhbNum); /* ** to make debuggery easier */ - WBYTE(PacketP->data[2], 'W'); - WBYTE(PacketP->data[3], 'F'); - WBYTE(PacketP->data[4], 'L'); - WBYTE(PacketP->data[5], 'U'); - WBYTE(PacketP->data[6], 'S'); - WBYTE(PacketP->data[7], 'H'); - WBYTE(PacketP->data[8], ' '); - WBYTE(PacketP->data[9], '0' + PortP->WflushFlag); - WBYTE(PacketP->data[10], ' '); - WBYTE(PacketP->data[11], ' '); - WBYTE(PacketP->data[12], '\0'); + writeb('W', &PacketP->data[2]); + writeb('F', &PacketP->data[3]); + writeb('L', &PacketP->data[4]); + writeb('U', &PacketP->data[5]); + writeb('S', &PacketP->data[6]); + writeb('H', &PacketP->data[7]); + writeb(' ', &PacketP->data[8]); + writeb('0' + PortP->WflushFlag, &PacketP->data[9]); + writeb(' ', &PacketP->data[10]); + writeb(' ', &PacketP->data[11]); + writeb('\0', &PacketP->data[12]); /* ** its two bytes long! */ - WBYTE(PacketP->len, PKT_CMD_BIT | 2); + writeb(PKT_CMD_BIT | 2, &PacketP->len); /* ** queue it! @@ -529,19 +526,15 @@ int From; } /* -** Routine for handling received data for clist drivers. -** NB: Called with the tty locked. The spl from the lockb( ) is passed. -** we return the ttySpl level that we re-locked at. +** Routine for handling received data for tty drivers */ -static void RIOReceive(p, PortP) -struct rio_info *p; -struct Port *PortP; +static void RIOReceive(struct rio_info *p, struct Port *PortP) { struct tty_struct *TtyP; - register ushort transCount; + unsigned short transCount; struct PKT *PacketP; - register uint DataCnt; - uchar *ptr; + register unsigned int DataCnt; + unsigned char *ptr; unsigned char *buf; int copied = 0; @@ -594,9 +587,6 @@ struct Port *PortP; transCount = 1; while (can_remove_receive(&PacketP, PortP) && transCount) { -#ifdef STATS - PortP->Stat.RxIntCnt++; -#endif /* STATS */ RxIntCnt++; /* @@ -642,28 +632,15 @@ struct Port *PortP; ** to '#define', (this is the only place ___DEBUG_IT___ occurs in the ** driver). */ -#undef ___DEBUG_IT___ -#ifdef ___DEBUG_IT___ - kkprintf("I:%d R:%d P:%d Q:%d C:%d F:%x ", intCount, RxIntCnt, PortP->PortNum, TtyP->rxqueue.count, transCount, TtyP->flags); -#endif - ptr = (uchar *) PacketP->data + PortP->RxDataStart; + ptr = (unsigned char *) PacketP->data + PortP->RxDataStart; tty_prepare_flip_string(TtyP, &buf, transCount); rio_memcpy_fromio(buf, ptr, transCount); -#ifdef STATS - /* - ** keep a count for statistical purposes - */ - PortP->Stat.RxCharCnt += transCount; -#endif PortP->RxDataStart += transCount; PacketP->len -= transCount; copied += transCount; -#ifdef ___DEBUG_IT___ - kkprintf("T:%d L:%d\n", DataCnt, PacketP->len); -#endif if (PacketP->len == 0) { /* @@ -674,12 +651,6 @@ struct Port *PortP; remove_receive(PortP); put_free_end(PortP->HostP, PacketP); PortP->RxDataStart = 0; -#ifdef STATS - /* - ** more lies ( oops, I mean statistics ) - */ - PortP->Stat.RxPktCnt++; -#endif /* STATS */ } } } @@ -691,215 +662,3 @@ struct Port *PortP; return; } -#ifdef FUTURE_RELEASE -/* -** The proc routine called by the line discipline to do the work for it. -** The proc routine works hand in hand with the interrupt routine. -*/ -int riotproc(p, tp, cmd, port) -struct rio_info *p; -register struct ttystatics *tp; -int cmd; -int port; -{ - register struct Port *PortP; - int SysPort; - struct PKT *PacketP; - - SysPort = port; /* Believe me, it works. */ - - if (SysPort < 0 || SysPort >= RIO_PORTS) { - rio_dprintk(RIO_DEBUG_INTR, "Illegal port %d derived from TTY in riotproc()\n", SysPort); - return 0; - } - PortP = p->RIOPortp[SysPort]; - - if ((uint) PortP->PhbP < (uint) PortP->Caddr || (uint) PortP->PhbP >= (uint) PortP->Caddr + SIXTY_FOUR_K) { - rio_dprintk(RIO_DEBUG_INTR, "RIO: NULL or BAD PhbP on sys port %d in proc routine\n", SysPort); - rio_dprintk(RIO_DEBUG_INTR, " PortP = 0x%x\n", PortP); - rio_dprintk(RIO_DEBUG_INTR, " PortP->PhbP = 0x%x\n", PortP->PhbP); - rio_dprintk(RIO_DEBUG_INTR, " PortP->Caddr = 0x%x\n", PortP->PhbP); - rio_dprintk(RIO_DEBUG_INTR, " PortP->HostPort = 0x%x\n", PortP->HostPort); - return 0; - } - - switch (cmd) { - case T_WFLUSH: - rio_dprintk(RIO_DEBUG_INTR, "T_WFLUSH\n"); - /* - ** Because of the spooky way the RIO works, we don't need - ** to issue a flush command on any of the SET*F commands, - ** as that causes trouble with getty and login, which issue - ** these commands to incur a READ flush, and rely on the fact - ** that the line discipline does a wait for drain for them. - ** As the rio doesn't wait for drain, the write flush would - ** destroy the Password: prompt. This isn't very friendly, so - ** here we only issue a WFLUSH command if we are in the interrupt - ** routine, or we aren't executing a SET*F command. - */ - if (PortP->HostP->InIntr || !PortP->FlushCmdBodge) { - /* - ** form a wflush packet - 1 byte long, no data - */ - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_INTR, "WFLUSH on deleted RTA\n"); - } else { - if (RIOPreemptiveCmd(p, PortP, WFLUSH) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "T_WFLUSH Command failed\n"); - } else - rio_dprintk(RIO_DEBUG_INTR, "T_WFLUSH Command\n"); - } - /* - ** WFLUSH operation - flush the data! - */ - PortP->TxBufferIn = PortP->TxBufferOut = 0; - } else { - rio_dprintk(RIO_DEBUG_INTR, "T_WFLUSH Command ignored\n"); - } - /* - ** sort out the line discipline - */ - if (PortP->CookMode == COOK_WELL) - goto start; - break; - - case T_RESUME: - rio_dprintk(RIO_DEBUG_INTR, "T_RESUME\n"); - /* - ** send pre-emptive resume packet - */ - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_INTR, "RESUME on deleted RTA\n"); - } else { - if (RIOPreemptiveCmd(p, PortP, RESUME) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "T_RESUME Command failed\n"); - } - } - /* - ** and re-start the sender software! - */ - if (PortP->CookMode == COOK_WELL) - goto start; - break; - - case T_TIME: - rio_dprintk(RIO_DEBUG_INTR, "T_TIME\n"); - /* - ** T_TIME is called when xDLY is set in oflags and - ** the line discipline timeout has expired. It's - ** function in life is to clear the TIMEOUT flag - ** and to re-start output to the port. - */ - /* - ** Fall through and re-start output - */ - case T_OUTPUT: - start: - if (PortP->MagicFlags & MAGIC_FLUSH) { - PortP->MagicFlags |= MORE_OUTPUT_EYGOR; - return 0; - } - RIOTxEnable((char *) PortP); - PortP->MagicFlags &= ~MORE_OUTPUT_EYGOR; - /*rio_dprint(RIO_DEBUG_INTR, PortP,DBG_PROC,"T_OUTPUT finished\n"); */ - break; - - case T_SUSPEND: - rio_dprintk(RIO_DEBUG_INTR, "T_SUSPEND\n"); - /* - ** send a suspend pre-emptive packet. - */ - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_INTR, "SUSPEND deleted RTA\n"); - } else { - if (RIOPreemptiveCmd(p, PortP, SUSPEND) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "T_SUSPEND Command failed\n"); - } - } - /* - ** done! - */ - break; - - case T_BLOCK: - rio_dprintk(RIO_DEBUG_INTR, "T_BLOCK\n"); - break; - - case T_RFLUSH: - rio_dprintk(RIO_DEBUG_INTR, "T_RFLUSH\n"); - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_INTR, "RFLUSH on deleted RTA\n"); - PortP->RxDataStart = 0; - } else { - if (RIOPreemptiveCmd(p, PortP, RFLUSH) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "T_RFLUSH Command failed\n"); - return 0; - } - PortP->RxDataStart = 0; - while (can_remove_receive(&PacketP, PortP)) { - remove_receive(PortP); - ShowPacket(DBG_PROC, PacketP); - put_free_end(PortP->HostP, PacketP); - } - if (PortP->PhbP->handshake == PHB_HANDSHAKE_SET) { - /* - ** MAGIC! - */ - rio_dprintk(RIO_DEBUG_INTR, "Set receive handshake bit\n"); - PortP->PhbP->handshake |= PHB_HANDSHAKE_RESET; - } - } - break; - /* FALLTHROUGH */ - case T_UNBLOCK: - rio_dprintk(RIO_DEBUG_INTR, "T_UNBLOCK\n"); - /* - ** If there is any data to receive set a timeout to service it. - */ - RIOReceive(p, PortP); - break; - - case T_BREAK: - rio_dprintk(RIO_DEBUG_INTR, "T_BREAK\n"); - /* - ** Send a break command. For Sys V - ** this is a timed break, so we - ** send a SBREAK[time] packet - */ - /* - ** Build a BREAK command - */ - if (PortP->State & RIO_DELETED) { - rio_dprintk(RIO_DEBUG_INTR, "BREAK on deleted RTA\n"); - } else { - if (RIOShortCommand(PortP, SBREAK, 2, p->RIOConf.BreakInterval) == RIO_FAIL) { - rio_dprintk(RIO_DEBUG_INTR, "SBREAK RIOShortCommand failed\n"); - } - } - - /* - ** done! - */ - break; - - case T_INPUT: - rio_dprintk(RIO_DEBUG_INTR, "Proc T_INPUT called - I don't know what to do!\n"); - break; - case T_PARM: - rio_dprintk(RIO_DEBUG_INTR, "Proc T_PARM called - I don't know what to do!\n"); - break; - - case T_SWTCH: - rio_dprintk(RIO_DEBUG_INTR, "Proc T_SWTCH called - I don't know what to do!\n"); - break; - - default: - rio_dprintk(RIO_DEBUG_INTR, "Proc UNKNOWN command %d\n", cmd); - } - /* - ** T_OUTPUT returns without passing through this point! - */ - /*rio_dprint(RIO_DEBUG_INTR, PortP,DBG_PROC,"riotproc done\n"); */ - return (0); -} -#endif |