diff options
Diffstat (limited to 'drivers/char/rio/riotty.c')
| -rw-r--r-- | drivers/char/rio/riotty.c | 1376 |
1 files changed, 1376 insertions, 0 deletions
diff --git a/drivers/char/rio/riotty.c b/drivers/char/rio/riotty.c new file mode 100644 index 00000000000..db655002671 --- /dev/null +++ b/drivers/char/rio/riotty.c @@ -0,0 +1,1376 @@ +/* +** ----------------------------------------------------------------------------- +** +** 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 : riotty.c +** SID : 1.3 +** Last Modified : 11/6/98 10:33:47 +** Retrieved : 11/6/98 10:33:50 +** +** ident @(#)riotty.c 1.3 +** +** ----------------------------------------------------------------------------- +*/ +#ifdef SCCS_LABELS +static char *_riotty_c_sccs_ = "@(#)riotty.c 1.3"; +#endif + + +#define __EXPLICIT_DEF_H__ + +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/tty.h> +#include <linux/string.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/string.h> +#include <asm/semaphore.h> +#include <asm/uaccess.h> + +#include <linux/termios.h> + +#include <linux/serial.h> + +#include <linux/generic_serial.h> + + +#include "linux_compat.h" +#include "rio_linux.h" +#include "typdef.h" +#include "pkt.h" +#include "daemon.h" +#include "rio.h" +#include "riospace.h" +#include "top.h" +#include "cmdpkt.h" +#include "map.h" +#include "riotypes.h" +#include "rup.h" +#include "port.h" +#include "riodrvr.h" +#include "rioinfo.h" +#include "func.h" +#include "errors.h" +#include "pci.h" + +#include "parmmap.h" +#include "unixrup.h" +#include "board.h" +#include "host.h" +#include "error.h" +#include "phb.h" +#include "link.h" +#include "cmdblk.h" +#include "route.h" +#include "control.h" +#include "cirrus.h" +#include "rioioctl.h" +#include "param.h" +#include "list.h" +#include "sam.h" + +#if 0 +static void ttyseth_pv(struct Port *, struct ttystatics *, + struct termios *sg, int); +#endif + +static void RIOClearUp(struct Port *PortP); +int RIOShortCommand(struct rio_info *p, struct Port *PortP, + int command, int len, int arg); + +#if 0 +static int RIOCookMode(struct ttystatics *); +#endif + +extern int conv_vb[]; /* now defined in ttymgr.c */ +extern int conv_bv[]; /* now defined in ttymgr.c */ + +/* +** 16.09.1998 ARG - Fix to build riotty.k.o for Modular Kernel Support +** +** ep.def.h is necessary for Modular Kernel Support +** DO NOT place any kernel 'extern's after this line +** or this source file will not build riotty.k.o +*/ +#ifdef uLYNX +#include <ep.def.h> +#endif + +#ifdef NEED_THIS2 +static struct old_sgttyb +default_sg = +{ + B19200, B19200, /* input and output speed */ + 'H' - '@', /* erase char */ + -1, /* 2nd erase char */ + 'U' - '@', /* kill char */ + ECHO | CRMOD, /* mode */ + 'C' - '@', /* interrupt character */ + '\\' - '@', /* quit char */ + 'Q' - '@', /* start char */ + 'S' - '@', /* stop char */ + 'D' - '@', /* EOF */ + -1, /* brk */ + (LCRTBS | LCRTERA | LCRTKIL | LCTLECH), /* local mode word */ + 'Z' - '@', /* process stop */ + 'Y' - '@', /* delayed stop */ + 'R' - '@', /* reprint line */ + 'O' - '@', /* flush output */ + 'W' - '@', /* word erase */ + 'V' - '@' /* literal next char */ +}; +#endif + + +extern struct rio_info *p; + + +int +riotopen(struct tty_struct * tty, struct file * filp) +{ + register uint SysPort; + int Modem; + int repeat_this = 250; + struct Port *PortP; /* pointer to the port structure */ + unsigned long flags; + int retval = 0; + + func_enter (); + + /* Make sure driver_data is NULL in case the rio isn't booted jet. Else gs_close + is going to oops. + */ + tty->driver_data = NULL; + + SysPort = rio_minor(tty); + Modem = rio_ismodem(tty); + + if ( p->RIOFailed ) { + rio_dprintk (RIO_DEBUG_TTY, "System initialisation failed\n"); + pseterr(ENXIO); + func_exit (); + return -ENXIO; + } + + rio_dprintk (RIO_DEBUG_TTY, "port open SysPort %d (%s) (mapped:%d)\n", + SysPort, Modem ? "Modem" : "tty", + p->RIOPortp[SysPort]->Mapped); + + /* + ** Validate that we have received a legitimate request. + ** Currently, just check that we are opening a port on + ** a host card that actually exists, and that the port + ** has been mapped onto a host. + */ + if (SysPort >= RIO_PORTS) { /* out of range ? */ + rio_dprintk (RIO_DEBUG_TTY, "Illegal port number %d\n",SysPort); + pseterr(ENXIO); + func_exit(); + return -ENXIO; + } + + /* + ** Grab pointer to the port stucture + */ + PortP = p->RIOPortp[SysPort]; /* Get control struc */ + rio_dprintk (RIO_DEBUG_TTY, "PortP: %p\n", PortP); + if ( !PortP->Mapped ) { /* we aren't mapped yet! */ + /* + ** The system doesn't know which RTA this port + ** corresponds to. + */ + rio_dprintk (RIO_DEBUG_TTY, "port not mapped into system\n"); + func_exit (); + pseterr(ENXIO); + return -ENXIO; + } + + tty->driver_data = PortP; + + PortP->gs.tty = tty; + PortP->gs.count++; + + rio_dprintk (RIO_DEBUG_TTY, "%d bytes in tx buffer\n", + PortP->gs.xmit_cnt); + + retval = gs_init_port (&PortP->gs); + if (retval) { + PortP->gs.count--; + return -ENXIO; + } + /* + ** If the host hasn't been booted yet, then + ** fail + */ + if ( (PortP->HostP->Flags & RUN_STATE) != RC_RUNNING ) { + rio_dprintk (RIO_DEBUG_TTY, "Host not running\n"); + pseterr(ENXIO); + func_exit (); + return -ENXIO; + } + + /* + ** If the RTA has not booted yet and the user has choosen to block + ** until the RTA is present then we must spin here waiting for + ** the RTA to boot. + */ +#if 0 + if (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) { + if (PortP->WaitUntilBooted) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for RTA to boot\n"); + do { + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk (RIO_DEBUG_TTY, "RTA EINTR in delay \n"); + func_exit (); + return -EINTR; + } + if (repeat_this -- <= 0) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n"); + RIOPreemptiveCmd(p, PortP, FCLOSE ); + pseterr(EINTR); + func_exit (); + return -EIO; + } + } while(!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)); + rio_dprintk (RIO_DEBUG_TTY, "RTA has been booted\n"); + } else { + rio_dprintk (RIO_DEBUG_TTY, "RTA never booted\n"); + pseterr(ENXIO); + func_exit (); + return 0; + } + } +#else + /* I find the above code a bit hairy. I find the below code + easier to read and shorter. Now, if it works too that would + be great... -- REW + */ + rio_dprintk (RIO_DEBUG_TTY, "Checking if RTA has booted... \n"); + while (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) { + if (!PortP->WaitUntilBooted) { + rio_dprintk (RIO_DEBUG_TTY, "RTA never booted\n"); + func_exit (); + return -ENXIO; + } + + /* Under Linux you'd normally use a wait instead of this + busy-waiting. I'll stick with the old implementation for + now. --REW + */ + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk (RIO_DEBUG_TTY, "RTA_wait_for_boot: EINTR in delay \n"); + func_exit (); + return -EINTR; + } + if (repeat_this -- <= 0) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n"); + func_exit (); + return -EIO; + } + } + rio_dprintk (RIO_DEBUG_TTY, "RTA has been booted\n"); +#endif +#if 0 + tp = PortP->TtyP; /* get tty struct */ +#endif + rio_spin_lock_irqsave(&PortP->portSem, flags); + if ( p->RIOHalted ) { + goto bombout; + } +#if 0 + retval = gs_init_port(&PortP->gs); + if (retval){ + func_exit (); + return retval; + } +#endif + + /* + ** If the port is in the final throws of being closed, + ** we should wait here (politely), waiting + ** for it to finish, so that it doesn't close us! + */ + while ( (PortP->State & RIO_CLOSING) && !p->RIOHalted ) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for RIO_CLOSING to go away\n"); + if (repeat_this -- <= 0) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); + RIOPreemptiveCmd(p, PortP, FCLOSE ); + retval = -EINTR; + goto bombout; + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_spin_lock_irqsave(&PortP->portSem, flags); + retval = -EINTR; + goto bombout; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if ( !PortP->Mapped ) { + rio_dprintk (RIO_DEBUG_TTY, "Port unmapped while closing!\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + retval = -ENXIO; + func_exit (); + return retval; + } + + if ( p->RIOHalted ) { + goto bombout; + } + +/* +** 15.10.1998 ARG - ESIL 0761 part fix +** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure, +** we need to make sure that the flags are clear when the port is opened. +*/ + /* Uh? Suppose I turn these on and then another process opens + the port again? The flags get cleared! Not good. -- REW */ + if ( !(PortP->State & (RIO_LOPEN | RIO_MOPEN)) ) { + PortP->Config &= ~(RIO_CTSFLOW|RIO_RTSFLOW); + } + + if (!(PortP->firstOpen)) { /* First time ? */ + rio_dprintk (RIO_DEBUG_TTY, "First open for this port\n"); + + + PortP->firstOpen++; + PortP->CookMode = 0; /* XXX RIOCookMode(tp); */ + PortP->InUse = NOT_INUSE; + + /* Tentative fix for bug PR27. Didn't work. */ + /* PortP->gs.xmit_cnt = 0; */ + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); +#ifdef NEED_THIS + ttyseth(PortP, tp, (struct old_sgttyb *)&default_sg); +#endif + + /* Someone explain to me why this delay/config is + here. If I read the docs correctly the "open" + command piggybacks the parameters immediately. + -- REW */ + RIOParam(PortP,OPEN,Modem,OK_TO_SLEEP); /* Open the port */ +#if 0 + /* This delay of 1 second was annoying. I removed it. -- REW */ + RIODelay(PortP, HUNDRED_MS*10); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); /* Config the port */ +#endif + rio_spin_lock_irqsave(&PortP->portSem, flags); + + /* + ** wait for the port to be not closed. + */ + while ( !(PortP->PortState & PORT_ISOPEN) && !p->RIOHalted ) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for PORT_ISOPEN-currently %x\n",PortP->PortState); +/* +** 15.10.1998 ARG - ESIL 0759 +** (Part) fix for port being trashed when opened whilst RTA "disconnected" +** Take out the limited wait - now wait for ever or until user +** bangs us out. +** + if (repeat_this -- <= 0) { + rio_dprint(RIO_DEBUG_TTY, ("Waiting for open to finish timed out.\n")); + RIOPreemptiveCmd(p, PortP, FCLOSE ); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EINTR; + } +** +*/ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for open to finish broken by signal\n"); + RIOPreemptiveCmd(p, PortP, FCLOSE ); + func_exit (); + return -EINTR; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if ( p->RIOHalted ) { + retval = -EIO; +bombout: + /* RIOClearUp( PortP ); */ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return retval; + } + rio_dprintk (RIO_DEBUG_TTY, "PORT_ISOPEN found\n"); + } + +#ifdef MODEM_SUPPORT + if (Modem) { + rio_dprintk (RIO_DEBUG_TTY, "Modem - test for carrier\n"); + /* + ** ACTION + ** insert test for carrier here. -- ??? + ** I already see that test here. What's the deal? -- REW + */ + if ((PortP->gs.tty->termios->c_cflag & CLOCAL) || (PortP->ModemState & MSVR1_CD)) + { + rio_dprintk (RIO_DEBUG_TTY, "open(%d) Modem carr on\n", SysPort); + /* + tp->tm.c_state |= CARR_ON; + wakeup((caddr_t) &tp->tm.c_canq); + */ + PortP->State |= RIO_CARR_ON; + wake_up_interruptible (&PortP->gs.open_wait); + } + else /* no carrier - wait for DCD */ + { + /* + while (!(PortP->gs.tty->termios->c_state & CARR_ON) && + !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted ) + */ + while (!(PortP->State & RIO_CARR_ON) && + !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted ) { + + rio_dprintk (RIO_DEBUG_TTY, "open(%d) sleeping for carr on\n",SysPort); + /* + PortP->gs.tty->termios->c_state |= WOPEN; + */ + PortP->State |= RIO_WOPEN; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay (PortP, HUNDRED_MS) == RIO_FAIL) +#if 0 + if ( sleep((caddr_t)&tp->tm.c_canqo, TTIPRI|PCATCH)) +#endif + { + /* + ** ACTION: verify that this is a good thing + ** to do here. -- ??? + ** I think it's OK. -- REW + */ + rio_dprintk (RIO_DEBUG_TTY, "open(%d) sleeping for carr broken by signal\n", + SysPort); + RIOPreemptiveCmd( p, PortP, FCLOSE ); + /* + tp->tm.c_state &= ~WOPEN; + */ + PortP->State &= ~RIO_WOPEN; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + func_exit (); + return -EINTR; + } + } + PortP->State &= ~RIO_WOPEN; + } + if ( p->RIOHalted ) + goto bombout; + rio_dprintk (RIO_DEBUG_TTY, "Setting RIO_MOPEN\n"); + PortP->State |= RIO_MOPEN; + } + else +#endif + { + /* + ** ACTION + ** Direct line open - force carrier (will probably mean + ** that sleeping Modem line fubar) + */ + PortP->State |= RIO_LOPEN; + } + + if ( p->RIOHalted ) { + goto bombout; + } + + rio_dprintk (RIO_DEBUG_TTY, "high level open done\n"); + +#ifdef STATS + PortP->Stat.OpenCnt++; +#endif + /* + ** Count opens for port statistics reporting + */ + if (PortP->statsGather) + PortP->opens++; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + rio_dprintk (RIO_DEBUG_TTY, "Returning from open\n"); + func_exit (); + return 0; +} + +/* +** RIOClose the port. +** The operating system thinks that this is last close for the device. +** As there are two interfaces to the port (Modem and tty), we need to +** check that both are closed before we close the device. +*/ +int +riotclose(void *ptr) +{ +#if 0 + register uint SysPort = dev; + struct ttystatics *tp; /* pointer to our ttystruct */ +#endif + struct Port *PortP =ptr; /* pointer to the port structure */ + int deleted = 0; + int try = -1; /* Disable the timeouts by setting them to -1 */ + int repeat_this = -1; /* Congrats to those having 15 years of + uptime! (You get to break the driver.) */ + long end_time; + struct tty_struct * tty; + unsigned long flags; + int Modem; + int rv =0; + + rio_dprintk (RIO_DEBUG_TTY, "port close SysPort %d\n",PortP->PortNum); + + /* PortP = p->RIOPortp[SysPort]; */ + rio_dprintk (RIO_DEBUG_TTY, "Port is at address 0x%x\n",(int)PortP); + /* tp = PortP->TtyP;*/ /* Get tty */ + tty = PortP->gs.tty; + rio_dprintk (RIO_DEBUG_TTY, "TTY is at address 0x%x\n",(int)tty); + + if (PortP->gs.closing_wait) + end_time = jiffies + PortP->gs.closing_wait; + else + end_time = jiffies + MAX_SCHEDULE_TIMEOUT; + + Modem = rio_ismodem(tty); +#if 0 + /* What F.CKING cache? Even then, a higly idle multiprocessor, + system with large caches this won't work . Better find out when + this doesn't work asap, and fix the cause. -- REW */ + + RIODelay(PortP, HUNDRED_MS*10); /* To flush the cache */ +#endif + rio_spin_lock_irqsave(&PortP->portSem, flags); + + /* + ** Setting this flag will make any process trying to open + ** this port block until we are complete closing it. + */ + PortP->State |= RIO_CLOSING; + + if ( (PortP->State & RIO_DELETED) ) { + rio_dprintk (RIO_DEBUG_TTY, "Close on deleted RTA\n"); + deleted = 1; + } + + if ( p->RIOHalted ) { + RIOClearUp( PortP ); + rv = -EIO; + goto close_end; + } + + rio_dprintk (RIO_DEBUG_TTY, "Clear bits\n"); + /* + ** clear the open bits for this device + */ + PortP->State &= (Modem ? ~RIO_MOPEN : ~RIO_LOPEN); + PortP->State &= ~RIO_CARR_ON; + PortP->ModemState &= ~MSVR1_CD; + /* + ** If the device was open as both a Modem and a tty line + ** then we need to wimp out here, as the port has not really + ** been finally closed (gee, whizz!) The test here uses the + ** bit for the OTHER mode of operation, to see if THAT is + ** still active! + */ + if ( (PortP->State & (RIO_LOPEN|RIO_MOPEN)) ) { + /* + ** The port is still open for the other task - + ** return, pretending that we are still active. + */ + rio_dprintk (RIO_DEBUG_TTY, "Channel %d still open !\n",PortP->PortNum); + PortP->State &= ~RIO_CLOSING; + if (PortP->firstOpen) + PortP->firstOpen--; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EIO; + } + + rio_dprintk (RIO_DEBUG_TTY, "Closing down - everything must go!\n"); + + PortP->State &= ~RIO_DYNOROD; + + /* + ** This is where we wait for the port + ** to drain down before closing. Bye-bye.... + ** (We never meant to do this) + */ + rio_dprintk (RIO_DEBUG_TTY, "Timeout 1 starts\n"); + + if (!deleted) + while ( (PortP->InUse != NOT_INUSE) && !p->RIOHalted && + (PortP->TxBufferIn != PortP->TxBufferOut) ) { + cprintf("Need to flush the ttyport\n"); + if (repeat_this -- <= 0) { + rv = -EINTR; + rio_dprintk (RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n"); + RIOPreemptiveCmd(p, PortP, FCLOSE ); + goto close_end; + } + rio_dprintk (RIO_DEBUG_TTY, "Calling timeout to flush in closing\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (RIODelay_ni(PortP, HUNDRED_MS*10) == RIO_FAIL) { + rio_dprintk (RIO_DEBUG_TTY, "RTA EINTR in delay \n"); + rv = -EINTR; + rio_spin_lock_irqsave(&PortP->portSem, flags); + goto close_end; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + PortP->TxBufferIn = PortP->TxBufferOut = 0; + repeat_this = 0xff; + + PortP->InUse = 0; + if ( (PortP->State & (RIO_LOPEN|RIO_MOPEN)) ) { + /* + ** The port has been re-opened for the other task - + ** return, pretending that we are still active. + */ + rio_dprintk (RIO_DEBUG_TTY, "Channel %d re-open!\n", PortP->PortNum); + PortP->State &= ~RIO_CLOSING; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (PortP->firstOpen) + PortP->firstOpen--; + return -EIO; + } + + if ( p->RIOHalted ) { + RIOClearUp( PortP ); + goto close_end; + } + + + + /* Can't call RIOShortCommand with the port locked. */ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + + if (RIOShortCommand(p, PortP, CLOSE, 1, 0) == RIO_FAIL) { + RIOPreemptiveCmd(p, PortP,FCLOSE); + goto close_end; + } + + if (!deleted) + while (try && (PortP->PortState & PORT_ISOPEN)) { + try--; + if (time_after (jiffies, end_time)) { + rio_dprintk (RIO_DEBUG_TTY, "Run out of tries - force the bugger shut!\n" ); + RIOPreemptiveCmd(p, PortP,FCLOSE); + break; + } + rio_dprintk (RIO_DEBUG_TTY, "Close: PortState:ISOPEN is %d\n", + PortP->PortState & PORT_ISOPEN); + + if ( p->RIOHalted ) { + RIOClearUp( PortP ); + goto close_end; + } + if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) { + rio_dprintk (RIO_DEBUG_TTY, "RTA EINTR in delay \n"); + RIOPreemptiveCmd(p, PortP,FCLOSE); + break; + } + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + rio_dprintk (RIO_DEBUG_TTY, "Close: try was %d on completion\n", try ); + + /* RIOPreemptiveCmd(p, PortP, FCLOSE); */ + +/* +** 15.10.1998 ARG - ESIL 0761 part fix +** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure,** we need to make sure that the flags are clear when the port is opened. +*/ + PortP->Config &= ~(RIO_CTSFLOW|RIO_RTSFLOW); + + +#ifdef STATS + PortP->Stat.CloseCnt++; +#endif + /* + ** Count opens for port statistics reporting + */ + if (PortP->statsGather) + PortP->closes++; + +close_end: + /* XXX: Why would a "DELETED" flag be reset here? I'd have + thought that a "deleted" flag means that the port was + permanently gone, but here we can make it reappear by it + being in close during the "deletion". + */ + PortP->State &= ~(RIO_CLOSING|RIO_DELETED); + if (PortP->firstOpen) + PortP->firstOpen--; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + rio_dprintk (RIO_DEBUG_TTY, "Return from close\n"); + return rv; +} + + +/* +** decide if we need to use the line discipline. +** This routine can return one of three values: +** COOK_RAW if no processing has to be done by the line discipline or the card +** COOK_WELL if the line discipline must be used to do the processing +** COOK_MEDIUM if the card can do all the processing necessary. +*/ +#if 0 +static int +RIOCookMode(struct ttystatics *tp) +{ + /* + ** We can't handle tm.c_mstate != 0 on SCO + ** We can't handle mapping + ** We can't handle non-ttwrite line disc. + ** We can't handle lflag XCASE + ** We can handle oflag OPOST & (OCRNL, ONLCR, TAB3) + */ + +#ifdef CHECK + CheckTtyP( tp ); +#endif + if (!(tp->tm.c_oflag & OPOST)) /* No post processing */ + return COOK_RAW; /* Raw mode o/p */ + + if ( tp->tm.c_lflag & XCASE ) + return COOK_WELL; /* Use line disc */ + + if (tp->tm.c_oflag & ~(OPOST | ONLCR | OCRNL | TAB3 ) ) + return COOK_WELL; /* Use line disc for strange modes */ + + if ( tp->tm.c_oflag == OPOST ) /* If only OPOST is set, do RAW */ + return COOK_RAW; + + /* + ** So, we need to output process! + */ + return COOK_MEDIUM; +} +#endif + +static void +RIOClearUp(PortP) +struct Port *PortP; +{ + rio_dprintk (RIO_DEBUG_TTY, "RIOHalted set\n"); + PortP->Config = 0; /* Direct semaphore */ + PortP->PortState = 0; + PortP->firstOpen = 0; + PortP->FlushCmdBodge = 0; + PortP->ModemState = PortP->CookMode = 0; + PortP->Mapped = 0; + PortP->WflushFlag = 0; + PortP->MagicFlags = 0; + PortP->RxDataStart = 0; + PortP->TxBufferIn = 0; + PortP->TxBufferOut = 0; +} + +/* +** Put a command onto a port. +** The PortPointer, command, length and arg are passed. +** The len is the length *inclusive* of the command byte, +** and so for a command that takes no data, len==1. +** The arg is a single byte, and is only used if len==2. +** Other values of len aren't allowed, and will cause +** a panic. +*/ +int RIOShortCommand(struct rio_info *p, struct Port *PortP, + int command, int len, int arg) +{ + PKT *PacketP; + int retries = 20; /* at 10 per second -> 2 seconds */ + unsigned long flags; + + rio_dprintk (RIO_DEBUG_TTY, "entering shortcommand.\n"); +#ifdef CHECK + CheckPortP( PortP ); + if ( len < 1 || len > 2 ) + cprintf(("STUPID LENGTH %d\n",len)); +#endif + + if ( PortP->State & RIO_DELETED ) { + rio_dprintk (RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n"); + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + + /* + ** If the port is in use for pre-emptive command, then wait for it to + ** be free again. + */ + while ( (PortP->InUse != NOT_INUSE) && !p->RIOHalted ) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting for not in use (%d)\n", + retries); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (retries-- <= 0) { + return RIO_FAIL; + } + if (RIODelay_ni(PortP, HUNDRED_MS) == RIO_FAIL) { + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + if ( PortP->State & RIO_DELETED ) { + rio_dprintk (RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return RIO_FAIL; + } + + while ( !can_add_transmit(&PacketP,PortP) && !p->RIOHalted ) { + rio_dprintk (RIO_DEBUG_TTY, "Waiting to add short command to queue (%d)\n", retries); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + if (retries-- <= 0) { + rio_dprintk (RIO_DEBUG_TTY, "out of tries. Failing\n"); + return RIO_FAIL; + } + if ( RIODelay_ni(PortP, HUNDRED_MS)==RIO_FAIL ) { + return RIO_FAIL; + } + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if ( p->RIOHalted ) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return RIO_FAIL; + } + + /* + ** set the command byte and the argument byte + */ + WBYTE(PacketP->data[0] , command); + + if ( len==2 ) + WBYTE(PacketP->data[1] , arg); + + /* + ** set the length of the packet and set the command bit. + */ + WBYTE(PacketP->len , PKT_CMD_BIT | len); + + add_transmit(PortP); + /* + ** Count characters transmitted for port statistics reporting + */ + if (PortP->statsGather) + PortP->txchars += len; + + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return p->RIOHalted ? RIO_FAIL : ~RIO_FAIL; +} + + +#if 0 +/* +** This is an ioctl interface. This is the twentieth century. You know what +** its all about. +*/ +int +riotioctl(struct rio_info *p, struct tty_struct *tty, int cmd, caddr_t arg) +{ + register struct Port *PortP; + register struct ttystatics *tp; + int current; + int ParamSemIncremented = 0; + int old_oflag, old_cflag, old_iflag, changed, oldcook; + int i; + unsigned char sio_regs[5]; /* Here be magic */ + short vpix_cflag; + short divisor; + int baud; + uint SysPort = rio_minor(tty); + int Modem = rio_ismodem(tty); + int ioctl_processed; + + rio_dprintk (RIO_DEBUG_TTY, "port ioctl SysPort %d command 0x%x argument 0x%x %s\n", + SysPort, cmd, arg, Modem?"Modem":"tty") ; + + if ( SysPort >= RIO_PORTS ) { + rio_dprintk (RIO_DEBUG_TTY, "Bad port number %d\n", SysPort); + return -ENXIO; + } + + PortP = p->RIOPortp[SysPort]; + tp = PortP->TtyP; + + rio_spin_lock_irqsave(&PortP->portSem, flags); + +#ifdef STATS + PortP->Stat.IoctlCnt++; +#endif + + if ( PortP->State & RIO_DELETED ) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EIO; + } + + + if ( p->RIOHalted ) { + RIOClearUp( PortP ); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return -EIO; + } + + /* + ** Count ioctls for port statistics reporting + */ + if (PortP->statsGather) + PortP->ioctls++; + + /* + ** Specialix RIO Ioctl calls + */ + switch (cmd) { + + case TCRIOTRIAD: + if ( arg ) + PortP->State |= RIO_TRIAD_MODE; + else + PortP->State &= ~RIO_TRIAD_MODE; + /* + ** Normally, when istrip is set on a port, a config is + ** sent to the RTA instructing the CD1400 to do the + ** stripping. In TRIAD mode, the interrupt receive routine + ** must do the stripping instead, since it has to detect + ** an 8 bit function key sequence. If istrip is set with + ** TRIAD mode on(off), and 8 bit data is being read by + ** the port, the user then turns TRIAD mode off(on), the RTA + ** must be reconfigured (not) to do the stripping. + ** Hence we call RIOParam here. + */ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); + return 0; + + case TCRIOTSTATE: + rio_dprintk (RIO_DEBUG_TTY, "tbusy/tstop monitoring %sabled\n", + arg ? "en" : "dis"); + /* MonitorTstate = 0 ;*/ + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP); + return 0; + + case TCRIOSTATE: /* current state of Modem input pins */ + rio_dprintk (RIO_DEBUG_TTY, "TCRIOSTATE\n"); + if (RIOPreemptiveCmd(p, PortP, MGET) == RIO_FAIL) + rio_dprintk (RIO_DEBUG_TTY, "TCRIOSTATE command failed\n"); + PortP->State |= RIO_BUSY; + current = PortP->ModemState; + if ( copyout((caddr_t)¤t, (int)arg, + sizeof(current))==COPYFAIL ) { + rio_dprintk (RIO_DEBUG_TTY, "Copyout failed\n"); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EFAULT); + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOMBIS: /* Set modem lines */ + case TCRIOMBIC: /* Clear modem lines */ + rio_dprintk (RIO_DEBUG_TTY, "TCRIOMBIS/TCRIOMBIC\n"); + if (cmd == TCRIOMBIS) { + uint state; + state = (uint)arg; + PortP->ModemState |= (ushort)state; + PortP->ModemLines = (ulong) arg; + if (RIOPreemptiveCmd(p, PortP, MBIS) == RIO_FAIL) + rio_dprintk (RIO_DEBUG_TTY, + "TCRIOMBIS command failed\n"); + } + else { + uint state; + + state = (uint)arg; + PortP->ModemState &= ~(ushort)state; + PortP->ModemLines = (ulong) arg; + if (RIOPreemptiveCmd(p, PortP, MBIC) == RIO_FAIL) + rio_dprintk (RIO_DEBUG_TTY, "TCRIOMBIC command failed\n"); + } + PortP->State |= RIO_BUSY; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOXPON: /* set Xprint ON string */ + rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPON\n"); + if ( copyin((int)arg, (caddr_t)PortP->Xprint.XpOn, + MAX_XP_CTRL_LEN)==COPYFAIL ) { + rio_dprintk (RIO_DEBUG_TTY, "Copyin failed\n"); + PortP->Xprint.XpOn[0] = '\0'; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EFAULT); + } + PortP->Xprint.XpOn[MAX_XP_CTRL_LEN-1] = '\0'; + PortP->Xprint.XpLen = strlen(PortP->Xprint.XpOn)+ + strlen(PortP->Xprint.XpOff); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOXPOFF: /* set Xprint OFF string */ + rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPOFF\n"); + if ( copyin( (int)arg, (caddr_t)PortP->Xprint.XpOff, + MAX_XP_CTRL_LEN)==COPYFAIL ) { + rio_dprintk (RIO_DEBUG_TTY, "Copyin failed\n"); + PortP->Xprint.XpOff[0] = '\0'; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EFAULT); + } + PortP->Xprint.XpOff[MAX_XP_CTRL_LEN-1] = '\0'; + PortP->Xprint.XpLen = strlen(PortP->Xprint.XpOn)+ + strlen(PortP->Xprint.XpOff); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOXPCPS: /* set Xprint CPS string */ + rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPCPS\n"); + if ( (uint)arg > p->RIOConf.MaxXpCps || + (uint)arg < p->RIOConf.MinXpCps ) { + rio_dprintk (RIO_DEBUG_TTY, "%d CPS out of range\n",arg); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EINVAL); + return 0; + } + PortP->Xprint.XpCps = (uint)arg; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOXPRINT: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPRINT\n"); + if ( copyout((caddr_t)&PortP->Xprint, (int)arg, + sizeof(struct Xprint))==COPYFAIL ) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EFAULT); + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOIXANYON: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXANYON\n"); + PortP->Config |= RIO_IXANY; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOIXANYOFF: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXANYOFF\n"); + PortP->Config &= ~RIO_IXANY; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOIXONON: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXONON\n"); + PortP->Config |= RIO_IXON; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + + case TCRIOIXONOFF: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXONOFF\n"); + PortP->Config &= ~RIO_IXON; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; + +/* +** 15.10.1998 ARG - ESIL 0761 part fix +** Added support for CTS and RTS flow control ioctls : +*/ + case TCRIOCTSFLOWEN: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOCTSFLOWEN\n"); + PortP->Config |= RIO_CTSFLOW; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); + return 0; + + case TCRIOCTSFLOWDIS: + rio_dprintk (RIO_DEBUG_TTY, "TCRIOCTSFLOWDIS\n"); + PortP->Config &= ~RIO_CTSFLOW; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); + return 0; + + case TCRIORTSFLOWEN: + rio_dprintk (RIO_DEBUG_TTY, "TCRIORTSFLOWEN\n"); + PortP->Config |= RIO_RTSFLOW; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); + return 0; + + case TCRIORTSFLOWDIS: + rio_dprintk (RIO_DEBUG_TTY, "TCRIORTSFLOWDIS\n"); + PortP->Config &= ~RIO_RTSFLOW; + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); + return 0; + +/* end ESIL 0761 part fix */ + + } + + + /* Lynx IOCTLS */ + switch (cmd) { + case TIOCSETP: + case TIOCSETN: + case OTIOCSETP: + case OTIOCSETN: + ioctl_processed++; + ttyseth(PortP, tp, (struct old_sgttyb *)arg); + break; + case TCSETA: + case TCSETAW: + case TCSETAF: + ioctl_processed++; + rio_dprintk (RIO_DEBUG_TTY, "NON POSIX ioctl\n"); + ttyseth_pv(PortP, tp, (struct termios *)arg, 0); + break; + case TCSETAP: /* posix tcsetattr() */ + case TCSETAWP: /* posix tcsetattr() */ + case TCSETAFP: /* posix tcsetattr() */ + rio_dprintk (RIO_DEBUG_TTY, "NON POSIX SYSV ioctl\n"); + ttyseth_pv(PortP, tp, (struct termios *)arg, 1); + ioctl_processed++; + break; + } + + /* + ** If its any of the commands that require the port to be in the + ** non-busy state wait until all output has drained + */ + if (!ioctl_processed) + switch(cmd) { + case TCSETAW: + case TCSETAF: + case TCSETA: + case TCSBRK: +#define OLD_POSIX ('x' << 8) +#define OLD_POSIX_SETA (OLD_POSIX | 2) +#define OLD_POSIX_SETAW (OLD_POSIX | 3) +#define OLD_POSIX_SETAF (OLD_POSIX | 4) +#define NEW_POSIX (('i' << 24) | ('X' << 16)) +#define NEW_POSIX_SETA (NEW_POSIX | 2) +#define NEW_POSIX_SETAW (NEW_POSIX | 3) +#define NEW_POSIX_SETAF (NEW_POSIX | 4) + case OLD_POSIX_SETA: + case OLD_POSIX_SETAW: + case OLD_POSIX_SETAF: + case NEW_POSIX_SETA: + case NEW_POSIX_SETAW: + case NEW_POSIX_SETAF: +#ifdef TIOCSETP + case TIOCSETP: +#endif + case TIOCSETD: + case TIOCSETN: + rio_dprintk (RIO_DEBUG_TTY, "wait for non-BUSY, semaphore set\n"); + /* + ** Wait for drain here, at least as far as the double buffer + ** being empty. + */ + /* XXX Does the above comment mean that this has + still to be implemented? -- REW */ + /* XXX Is the locking OK together with locking + in txenable? (Deadlock?) -- REW */ + + RIOTxEnable((char *)PortP); + break; + default: + break; + } + + old_cflag = tp->tm.c_cflag; + old_iflag = tp->tm.c_iflag; + old_oflag = tp->tm.c_oflag; + oldcook = PortP->CookMode; + + if ( p->RIOHalted ) { + RIOClearUp( PortP ); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EIO); + return 0; + } + + PortP->FlushCmdBodge = 0; + + /* + ** If the port is locked, and it is reconfigured, we want + ** to restore the state of the tty structure so the change is NOT + ** made. + */ + if (PortP->Lock) { + tp->tm.c_iflag = PortP->StoredTty.iflag; + tp->tm.c_oflag = PortP->StoredTty.oflag; + tp->tm.c_cflag = PortP->StoredTty.cflag; + tp->tm.c_lflag = PortP->StoredTty.lflag; + tp->tm.c_line = PortP->StoredTty.line; + for (i = 0; i < NCC + 1; i++) + tp->tm.c_cc[i] = PortP->StoredTty.cc[i]; + } + else { + /* + ** If the port is set to store the parameters, and it is + ** reconfigured, we want to save the current tty struct so it + ** may be restored on the next open. + */ + if (PortP->Store) { + PortP->StoredTty.iflag = tp->tm.c_iflag; + PortP->StoredTty.oflag = tp->tm.c_oflag; + PortP->StoredTty.cflag = tp->tm.c_cflag; + PortP->StoredTty.lflag = tp->tm.c_lflag; + PortP->StoredTty.line = tp->tm.c_line; + for (i = 0; i < NCC + 1; i++) + PortP->StoredTty.cc[i] = tp->tm.c_cc[i]; + } + } + + changed = (tp->tm.c_cflag != old_cflag) || + (tp->tm.c_iflag != old_iflag) || + (tp->tm.c_oflag != old_oflag); + + PortP->CookMode = RIOCookMode(tp); /* Set new cooking mode */ + + rio_dprintk (RIO_DEBUG_TTY, "RIOIoctl changed %d newcook %d oldcook %d\n", + changed,PortP->CookMode,oldcook); + +#ifdef MODEM_SUPPORT + /* + ** kludge to force CARR_ON if CLOCAL set + */ + if ((tp->tm.c_cflag & CLOCAL) || (PortP->ModemState & MSVR1_CD)) { + tp->tm.c_state |= CARR_ON; + wakeup ((caddr_t)&tp->tm.c_canq); + } +#endif + + if ( p->RIOHalted ) { + RIOClearUp( PortP ); + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + pseterr(EIO); + return 0; + } + /* + ** Re-configure if modes or cooking have changed + */ + if (changed || oldcook != PortP->CookMode || (ioctl_processed)) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + rio_dprintk (RIO_DEBUG_TTY, "Ioctl changing the PORT settings\n"); + RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); + rio_spin_lock_irqsave(&PortP->portSem, flags); + } + + if (p->RIOHalted) { + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + RIOClearUp( PortP ); + pseterr(EIO); + return 0; + } + rio_spin_unlock_irqrestore(&PortP->portSem, flags); + return 0; +} + +/* + ttyseth -- set hardware dependent tty settings +*/ +void +ttyseth(PortP, s, sg) +struct Port * PortP; +struct ttystatics * s; +struct old_sgttyb *sg; +{ + struct old_sgttyb * tsg; + struct termios *tp = &s->tm; + + tsg = &s->sg; + + if (sg->sg_flags & (EVENP|ODDP)) { + tp->c_cflag &= PARENB; + if (sg->sg_flags & EVENP) { + if (sg->sg_flags & ODDP) { + tp->c_cflag &= V_CS7; + tp->c_cflag &= ~PARENB; + } + else { + tp->c_cflag &= V_CS7; + tp->c_cflag &= PARENB; + tp->c_cflag &= PARODD; + } + } + else if (sg->sg_flags & ODDP) { + tp->c_cflag &= V_CS7; + tp->c_cflag &= PARENB; + tp->c_cflag &= PARODD; + } + else { + tp->c_cflag &= V_CS7; + tp->c_cflag &= PARENB; + } + } +/* + * Use ispeed as the desired speed. Most implementations don't handle + * separate input and output speeds very well. If the RIO handles this, + * I will have to use separate sets of flags to store them in the + * Port structure. + */ + if ( !sg->sg_ospeed ) + sg->sg_ospeed = sg->sg_ispeed; + else + sg->sg_ispeed = sg->sg_ospeed; + if (sg->sg_ispeed > V_EXTB ) + sg->sg_ispeed = V_EXTB; + if (sg->sg_ispeed < V_B0) + sg->sg_ispeed = V_B0; + *tsg = *sg; + tp->c_cflag = (tp->c_cflag & ~V_CBAUD) | conv_bv[(int)sg->sg_ispeed]; +} + +/* + ttyseth_pv -- set hardware dependent tty settings using either the + POSIX termios structure or the System V termio structure. + sysv = 0 => (POSIX): struct termios *sg + sysv != 0 => (System V): struct termio *sg +*/ +static void +ttyseth_pv(PortP, s, sg, sysv) +struct Port *PortP; +struct ttystatics *s; +struct termios *sg; +int sysv; +{ + int speed; + unsigned char csize; + unsigned char cread; + unsigned int lcr_flags; + int ps; + + if (sysv) { + /* sg points to a System V termio structure */ + csize = ((struct termio *)sg)->c_cflag & CSIZE; + cread = ((struct termio *)sg)->c_cflag & CREAD; + speed = conv_vb[((struct termio *)sg)->c_cflag & V_CBAUD]; + } + else { + /* sg points to a POSIX termios structure */ + csize = sg->c_cflag & CSIZE; + cread = sg->c_cflag & CREAD; + speed = conv_vb[sg->c_cflag & V_CBAUD]; + } + if (s->sg.sg_ispeed != speed || s->sg.sg_ospeed != speed) { + s->sg.sg_ispeed = speed; + s->sg.sg_ospeed = speed; + s->tm.c_cflag = (s->tm.c_cflag & ~V_CBAUD) | + conv_bv[(int)s->sg.sg_ispeed]; + } +} +#endif |