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Newsgroups: comp.sources.misc From: Warren Tucker <wht@n4hgf.Mt-Park.GA.US> Subject: v21i082: ecu - ECU async comm package rev 3.10, Part30/37 Message-ID: <1991Aug5.211912.8224@sparky.IMD.Sterling.COM> X-Md4-Signature: dc999e1f07e9e9979aefb18909481afd Date: Mon, 5 Aug 1991 21:19:12 GMT Approved: kent@sparky.imd.sterling.com Submitted-by: Warren Tucker <wht@n4hgf.Mt-Park.GA.US> Posting-number: Volume 21, Issue 82 Archive-name: ecu/part30 Environment: SCO, XENIX, ISC Supersedes: ecu3: Volume 16, Issue 25-59 ---- Cut Here and feed the following to sh ---- #!/bin/sh # this is ecu310.30 (part 30 of ecu310) # do not concatenate these parts, unpack them in order with /bin/sh # file fasi/fas.c continued # if touch 2>&1 | fgrep 'amc' > /dev/null then TOUCH=touch else TOUCH=true fi if test ! -r _shar_seq_.tmp; then echo 'Please unpack part 1 first!' exit 1 fi (read Scheck if test "$Scheck" != 30; then echo Please unpack part "$Scheck" next! exit 1 else exit 0 fi ) < _shar_seq_.tmp || exit 1 if test ! -f _shar_wnt_.tmp; then echo 'x - still skipping fasi/fas.c' else echo 'x - continuing file fasi/fas.c' sed 's/^X//' << 'SHAR_EOF' >> 'fasi/fas.c' && X OS_OPEN_FOR_GETTY | OS_WAIT_OPEN | OS_HWO_HANDSHAKE X | OS_HWI_HANDSHAKE, X OS_OPEN_FOR_GETTY | OS_WAIT_OPEN | OS_HWO_HANDSHAKE, X OS_OPEN_FOR_GETTY | OS_WAIT_OPEN | OS_HWO_HANDSHAKE X | OS_HDX_HANDSHAKE X}; X X/* The following defines are used to access multiplexed ports. */ X#define GET_PORT(port,num) \ X ((fip->device_flags.i & DF_CTL_EVERY)\ X ? (port)\ X : (port) + (num)) X X#define fas_first_ctl(fip,port) \ X ((void) (((fip)->device_flags.i & DF_CTL_FIRST)\ X ? outb (CTL_PORT, (port).p.ctl)\ X : 0)) X X#define fas_ctl(fip,port) \ X ((void) (((fip)->device_flags.i & (DF_CTL_FIRST | DF_CTL_EVERY))\ X ? outb (CTL_PORT, (port).p.ctl)\ X : 0)) X X#define fas_first_outb(fip,port,val) \ X ((void) (((fip)->device_flags.i & (DF_CTL_FIRST | DF_CTL_EVERY))\ X ? outb (CTL_PORT, (port).p.ctl)\ X : 0),\ X (void) outb ((port).addr, (val))) X X#define fas_outb(fip,port,val) \ X ((void) (((fip)->device_flags.i & DF_CTL_EVERY)\ X ? outb (CTL_PORT, (port).p.ctl)\ X : 0),\ X (void) outb ((port).addr, (val))) X X#define fas_first_inb(fip,port) \ X ((void) (((fip)->device_flags.i & (DF_CTL_FIRST | DF_CTL_EVERY))\ X ? outb (CTL_PORT, (port).p.ctl)\ X : 0),\ X inb ((port).addr)) X X#define fas_inb(fip,port) \ X ((void) (((fip)->device_flags.i & DF_CTL_EVERY)\ X ? outb (CTL_PORT, (port).p.ctl)\ X : 0),\ X inb ((port).addr)) X X/* The following defines are used to take apart the minor device numbers. */ X#define GET_UNIT(dev) ((dev) & 0x0f) X#define GET_OPEN_MODE(dev) (fas_open_modes [((dev) >> 4) & 0x0f]) X X/* lock device against concurrent use */ X#define get_device_lock(fip,prio) \ X{\ X /* sleep while device is used by an other process */\ X while ((fip)->device_flags.i & DF_DEVICE_LOCKED)\ X (void) sleep ((caddr_t) &(fip)->device_flags.i, (prio));\ X (fip)->device_flags.s |= DF_DEVICE_LOCKED;\ X} X X/* release device */ X#define release_device_lock(fip) \ X{\ X (fip)->device_flags.s &= ~DF_DEVICE_LOCKED;\ X /* wakeup the process that may wait for this device */\ X (void) wakeup ((caddr_t) &(fip)->device_flags.i);\ X} X X/* schedule event */ X#define event_sched(fip,event) \ X{\ X (fip)->event_flags.s |= (event);\ X if (!event_scheduled)\ X {\ X event_scheduled = TRUE;\ X (void) timeout (fas_event, (void *) NULL,\ X (EVENT_TIME) * (HZ) / 1000);\ X }\ X} X X/* fasinit X This routine checks for the presense of the devices in the fas_port X array and if the device is present tests and initializes it. X During the initialization if the device is determined to be an X NS16550A chip the DF_DEVICE_IS_NS16550A flag is set and the FIFOs will X be used. If the device is an i82510 chip the DF_DEVICE_IS_I82510 flag X is set and the device will be handled accordingly. X*/ X Xint Xfasinit () X{ X register struct fas_info *fip; X register uint unit; X uint logical_units, port, *seq_ptr; X char port_stat [MAX_UNITS + 1]; X REGVAR; X X if (fas_is_initted) X return (0); X X fas_is_initted = TRUE; X X /* execute the init sequence for the serial card */ X for (seq_ptr = fas_init_seq; *seq_ptr; seq_ptr++) X { X port = *seq_ptr; X seq_ptr++; X if (*seq_ptr & READ_PORT) X (void) inb (port); X else X (void) outb (port, *seq_ptr); X } X X /* setup the list of pointers to the tty structures */ X for (unit = 0, logical_units = fas_physical_units * 2; X unit < logical_units; unit++) X fas_tty_ptr [unit] = &fas_tty [unit]; X X /* setup and initialize all serial ports */ X for (unit = 0; unit < fas_physical_units; unit++) X { X fas_info_ptr [unit] = fip = &fas_info [unit]; X port_stat [unit] = '-'; X if (port = (uint) ((ushort) (fas_port [unit]))) X { X /* check the int vector */ X if (fas_vec [unit] >= NUM_INT_VECTORS) X { X port_stat [unit] = '>'; X continue; X } X X /* init all of its ports */ X if (fas_ctl_port [unit]) X { X fip->ctl_port = fas_ctl_port [unit]; X X if (fas_ctl_val [unit] & 0xff00) X fip->device_flags.s |= DF_CTL_EVERY; X else X fip->device_flags.s |= DF_CTL_FIRST; X } X X fip->port_0.p.addr = GET_PORT (port, 0); X fip->port_1.p.addr = GET_PORT (port, 1); X fip->port_2.p.addr = GET_PORT (port, 2); X fip->port_3.p.addr = GET_PORT (port, 3); X fip->port_4.p.addr = GET_PORT (port, 4); X fip->port_5.p.addr = GET_PORT (port, 5); X fip->port_6.p.addr = GET_PORT (port, 6); X fip->port_0.p.ctl = fas_make_ctl_val (fip, unit, 0); X fip->port_1.p.ctl = fas_make_ctl_val (fip, unit, 1); X fip->port_2.p.ctl = fas_make_ctl_val (fip, unit, 2); X fip->port_3.p.ctl = fas_make_ctl_val (fip, unit, 3); X fip->port_4.p.ctl = fas_make_ctl_val (fip, unit, 4); X fip->port_5.p.ctl = fas_make_ctl_val (fip, unit, 5); X fip->port_6.p.ctl = fas_make_ctl_val (fip, unit, 6); X fip->vec = fas_vec [unit]; X fip->modem.l = fas_modem [unit]; X fip->flow.l = fas_flow [unit]; X X /* mask off invalid bits */ X fip->modem.m.di &= MC_ANY_CONTROL; X fip->modem.m.eo &= MC_ANY_CONTROL; X fip->modem.m.ei &= MC_ANY_CONTROL; X fip->modem.m.ca &= MS_ANY_PRESENT; X fip->flow.m.ic &= MC_ANY_CONTROL; X fip->flow.m.oc &= MS_ANY_PRESENT; X fip->flow.m.oe &= MS_ANY_PRESENT; X fip->flow.m.hc &= MC_ANY_CONTROL; X X fip->recv_ring_put_ptr = fip->recv_buffer; X fip->recv_ring_take_ptr = fip->recv_buffer; X fip->xmit_ring_put_ptr = fip->xmit_buffer; X fip->xmit_ring_take_ptr = fip->xmit_buffer; X fip->xmit_fifo_size = 1; X X fip->ier = IE_NONE; /* disable all ints */ X fas_first_outb (fip, INT_ENABLE_PORT, fip->ier); X X /* is there a serial chip ? */ X if (fas_inb (fip, INT_ENABLE_PORT) != fip->ier) X { X port_stat [unit] = '?'; X continue; /* a hardware error */ X } X X /* test the chip thoroughly */ X if ((port_stat [unit] = (fas_test_device (fip) + '0')) X != '0') X { X continue; /* a hardware error */ X } X X fip->lcr = 0; X fas_outb (fip, LINE_CTL_PORT, fip->lcr); X fip->mcr = fas_mcb [unit] | fip->modem.m.di; X fas_outb (fip, MDM_CTL_PORT, fip->mcr); X X port_stat [unit] = '*'; X X /* let's see if it's an NS16550A */ X fas_outb (fip, NS_FIFO_CTL_PORT, NS_FIFO_INIT_CMD); X if (!(~fas_inb (fip, INT_ID_PORT) & II_NS_FIFO_ENABLED)) X { X fip->device_flags.s |= DF_DEVICE_IS_NS16550A; X fip->xmit_fifo_size = OUTPUT_NS_FIFO_SIZE; X port_stat [unit] = 'F'; X fas_outb (fip, NS_FIFO_CTL_PORT, NS_FIFO_CLEAR_CMD); X } X else X { X fas_outb (fip, NS_FIFO_CTL_PORT, NS_FIFO_CLEAR_CMD); X /* or is it an i82510 ? */ X fas_outb (fip, I_BANK_PORT, I_BANK_2); X if (!(~fas_inb (fip, I_BANK_PORT) & I_BANK_2)) X { X fip->device_flags.s |= DF_DEVICE_IS_I82510; X fip->xmit_fifo_size = OUTPUT_I_FIFO_SIZE; X port_stat [unit] = 'f'; X fas_outb (fip, I_BANK_PORT, I_BANK_1); X fas_outb (fip, I_TCM_PORT, I_FIFO_CLR_XMIT); X fas_outb (fip, I_RCM_PORT, I_FIFO_CLR_RECV); X } X fas_outb (fip, I_BANK_PORT, I_BANK_0); X } X X /* disable FIFOs if requested in space.c */ X if ((fas_port [unit] & NO_FIFO) && (fip->device_flags.i X & (DF_DEVICE_IS_NS16550A X | DF_DEVICE_IS_I82510))) X { X fip->device_flags.s &= ~(DF_DEVICE_IS_NS16550A X | DF_DEVICE_IS_I82510); X fip->xmit_fifo_size = 1; X port_stat [unit] = '+'; X } X X /* clear potential interrupts */ X (void) fas_inb (fip, MDM_STATUS_PORT); X (void) fas_inb (fip, RCV_DATA_PORT); X (void) fas_inb (fip, RCV_DATA_PORT); X (void) fas_inb (fip, LINE_STATUS_PORT); X (void) fas_inb (fip, INT_ID_PORT); X if (port = fas_int_ack_port [fip->vec]) X (void) outb (port, fas_int_ack [fip->vec]); X X /* show that it is present and configured */ X fip->device_flags.s |= DF_DEVICE_CONFIGURED; X } X } X X#if defined (NEED_PUT_GETCHAR) X fip = &fas_info [0]; X fip->mcr &= ~fip->modem.m.di; X fip->mcr |= INITIAL_MDM_CONTROL; X fas_first_outb (fip, MDM_CTL_PORT, fip->mcr); X X fip->lcr = INITIAL_LINE_CONTROL; X fas_outb (fip, LINE_CTL_PORT, fip->lcr | LC_ENABLE_DIVISOR); X fas_outb (fip, DIVISOR_LSB_PORT, INITIAL_BAUD_RATE); X fas_outb (fip, DIVISOR_MSB_PORT, (INITIAL_BAUD_RATE) >> 8); X fas_outb (fip, LINE_CTL_PORT, fip->lcr); X#endif X X#if defined (SCO) || defined (XENIX) X for (unit = 0; unit < fas_physical_units; unit++) X (void) printcfg ("fas", (uint) ((ushort) (fas_port [unit])), 7, X fas_vec [unit], -1, X#if defined (FASI) X "unit=%d type=%c FAS/i 2.08.01", X#else X "unit=%d type=%c release=2.08.0", X#endif /* FASI */ X unit, port_stat [unit]); X#else X port_stat [unit] = '\0'; X (void) printf ("\nFAS 2.08.0 async driver: Unit 0-%d init state is [%s]\n\n", X unit - 1, X port_stat); X#endif X return (0); X} X X/* Open a tty line. This function is called for every open, as opposed X to the fasclose function which is called only with the last close. X*/ Xint Xfasopen (dev, flag) Xint dev; Xint flag; X{ X register struct fas_info *fip; X register struct tty *ttyp; X register uint open_mode; X uint physical_unit; X int old_level; X X physical_unit = GET_UNIT (dev); X X /* check for valid port number */ X if (physical_unit >= fas_physical_units) X { X u.u_error = ENXIO; X return (-1); X } X X fip = fas_info_ptr [physical_unit]; X X /* was the port present at init time ? */ X if (!(fip->device_flags.i & DF_DEVICE_CONFIGURED)) X { X u.u_error = ENXIO; X return (-1); X } X X open_mode = GET_OPEN_MODE (dev); X X old_level = SPLINT (); X get_device_lock (fip, TTIPRI); X X /* If this is a getty open, the device is already open for X dialout and the FNDELAY flag is not set, wait until device X is closed. X */ X while ((open_mode & OS_OPEN_FOR_GETTY) X && (fip->o_state & OS_OPEN_FOR_DIALOUT) X && !(flag & FNDELAY)) X { X release_device_lock (fip); X (void) sleep ((caddr_t) &fip->o_state, TTIPRI); X get_device_lock (fip, TTIPRI); X } X X /* If the device is already open and another open uses a different X open mode or if a getty open waits for carrier and doesn't allow X parallel dialout opens, return with EBUSY error. X */ X if ((fip->o_state & ((open_mode & OS_OPEN_FOR_GETTY) X ? (OS_OPEN_STATES | OS_WAIT_OPEN) X : (OS_OPEN_STATES | OS_NO_DIALOUT))) X && ((flag & FEXCL) X || ((open_mode ^ fip->o_state) & (u.u_uid X ? OS_TEST_MASK X : OS_SU_TEST_MASK)))) X { X u.u_error = EBUSY; X release_device_lock (fip); X (void) splx (old_level); X return (-1); X } X X /* disable subsequent opens */ X if (flag & FEXCL) X open_mode |= OS_EXCLUSIVE_OPEN_1; X X /* set up pointer to tty structure */ X ttyp = (open_mode & OS_OPEN_FOR_GETTY) X ? fas_tty_ptr [physical_unit + fas_physical_units] X : fas_tty_ptr [physical_unit]; X X /* things to do on first open only */ X if (!(fip->o_state & ((open_mode & OS_OPEN_FOR_GETTY) X ? (OS_OPEN_STATES | OS_WAIT_OPEN) X : OS_OPEN_STATES))) X { X /* init data structures */ X fip->tty = ttyp; X (void) ttinit (ttyp); X ttyp->t_proc = fas_proc; X fip->po_state = fip->o_state; X fip->o_state = open_mode & ~OS_OPEN_STATES; X#if defined (HAVE_VPIX) X /* initialize VP/ix related variables */ X fip->v86_proc = (v86_t *) NULL; X fip->v86_intmask = 0; X fip->v86_ss.ss_start = CSTART; X fip->v86_ss.ss_stop = CSTOP; X#endif X fas_open_device (fip); /* open physical device */ X fas_param (fip, HARD_INIT); /* set up port registers */ X X /* allow pending tty interrupts */ X (void) SPLWRK (); X (void) SPLINT (); X } X X /* If getty open and the FNDELAY flag is not set, X block and wait for carrier if device not yet open. X */ X if ((open_mode & OS_OPEN_FOR_GETTY) && !(flag & FNDELAY)) X { X /* sleep while open for dialout or no carrier */ X while ((fip->o_state & OS_OPEN_FOR_DIALOUT) X || !(ttyp->t_state & (ISOPEN | CARR_ON))) X { X ttyp->t_state |= WOPEN; X release_device_lock (fip); X (void) sleep ((caddr_t) &ttyp->t_canq, TTIPRI); X get_device_lock (fip, TTIPRI); X } X ttyp->t_state &= ~WOPEN; X } X X /* wakeup processes that are still sleeping in getty open */ X if (ttyp->t_state & WOPEN) X#if defined(FASI) X { X#endif X (void) wakeup ((caddr_t) &ttyp->t_canq); X#if defined(FASI) X (void) wakeup ((caddr_t) &fip->device_flags.i); X } X#endif X X /* we need to flush the receiver with the first open */ X if (!(fip->o_state & OS_OPEN_STATES)) X fas_cmd (fip, ttyp, T_RFLUSH); X X (*linesw [ttyp->t_line].l_open) (ttyp); X X /* set open type flags */ X fip->o_state = open_mode; X X release_device_lock (fip); X (void) splx (old_level); X return (0); X} X X/* Close a tty line. This is only called if there is no other X concurrent open left. A blocked getty open is not counted as X a concurrent open because in this state it isn't really open. X*/ Xint Xfasclose (dev) Xint dev; X{ X register struct fas_info *fip; X register struct tty *ttyp; X uint physical_unit; X uint open_mode; X int old_level; X void (*old_sigkill)(); X X physical_unit = GET_UNIT (dev); X X fip = fas_info_ptr [physical_unit]; X X open_mode = GET_OPEN_MODE (dev); X X /* set up pointer to tty structure */ X ttyp = (open_mode & OS_OPEN_FOR_GETTY) X ? fas_tty_ptr [physical_unit + fas_physical_units] X : fas_tty_ptr [physical_unit]; X X old_level = SPLINT (); X get_device_lock (fip, TTIPRI); X X /* wait for output buffer drain only if device was open */ X if (ttyp->t_state & ISOPEN) X { X /* flush the output buffer immediately if the device X has been shut down because of an error X */ X if (!(fip->device_flags.i & DF_DEVICE_CONFIGURED)) X { X (void) ttyflush (ttyp, FWRITE); X } X /* wait for buffer drain and catch interrupts */ X while (ttyp->t_outq.c_cc || (ttyp->t_state & (BUSY | TIMEOUT))) X { X old_sigkill = u.u_signal [SIGKILL - 1]; X /* allow kill signal if close on exit */ X if (old_sigkill == SIG_IGN) X u.u_signal [SIGKILL - 1] = SIG_DFL; X ttyp->t_state |= TTIOW; X if (sleep ((caddr_t) &ttyp->t_oflag, TTOPRI | PCATCH)) X { X /* caught signal */ X ttyp->t_state &= ~TTIOW; X /* If close on exit, flush output buffer to X allow completion of the fasclose() function. X Otherwise, do the normal signal handling. X */ X if (old_sigkill == SIG_IGN) X (void) ttyflush (ttyp, FWRITE); X else X { X release_device_lock (fip); X (void) splx (old_level); X longjmp (u.u_qsav); X } X } X if (old_sigkill == SIG_IGN) X u.u_signal [SIGKILL - 1] = old_sigkill; X } X } X X (*linesw [ttyp->t_line].l_close) (ttyp); X X /* allow pending tty interrupts */ X (void) SPLWRK (); X (void) SPLINT (); X X if (open_mode & OS_OPEN_FOR_GETTY) X { X /* not waiting any more */ X ttyp->t_state &= ~WOPEN; X if (!(fip->o_state & OS_OPEN_FOR_DIALOUT)) X { X fas_close_device (fip); X fip->o_state = OS_DEVICE_CLOSED; X } X else X fip->po_state = OS_DEVICE_CLOSED; X } X else X { X fas_close_device (fip); X fip->o_state = OS_DEVICE_CLOSED; X /* If there is a waiting getty open on X this port, reopen the physical device. X */ X if (fip->po_state & OS_WAIT_OPEN) X { X /* get the getty version of the X tty structure X */ X fip->tty = fas_tty_ptr [physical_unit X + fas_physical_units]; X fip->o_state = fip->po_state; X fip->po_state = OS_DEVICE_CLOSED; X#if defined (HAVE_VPIX) X /* initialize VP/ix related variables */ X fip->v86_proc = (v86_t *) NULL; X fip->v86_intmask = 0; X fip->v86_ss.ss_start = CSTART; X fip->v86_ss.ss_stop = CSTOP; X#endif X if (!(fip->device_flags.i & DF_DO_HANGUP)) X { X fas_open_device (fip); X /* set up port registers */ X fas_param (fip, HARD_INIT); X } X } X (void) wakeup ((caddr_t) &fip->o_state); X } X X if (!(fip->device_flags.i & DF_DO_HANGUP)) X release_device_lock (fip); X X#if defined(FASI) X (void)wakeup((caddr_t)&fip->device_flags.i); X#endif X (void) splx (old_level); X return (0); X} X X/* read characters from the input buffer */ Xint Xfasread (dev) Xint dev; X{ X register struct fas_info *fip; X register struct tty *ttyp; X int old_level; X X fip = fas_info_ptr [GET_UNIT (dev)]; X X /* was the port present at init time ? */ X if (!(fip->device_flags.i & DF_DEVICE_CONFIGURED)) X { X u.u_error = ENXIO; X return (-1); X } X X ttyp = fip->tty; X X (*linesw [ttyp->t_line].l_read) (ttyp); X X old_level = SPLINT (); X X /* schedule character transfer to UNIX buffer */ X if (fip->recv_ring_cnt X#if defined (HAVE_VPIX) X && (((fip->iflag & DOSMODE) X ? MAX_VPIX_FILL - MIN_READ_CHUNK X : MAX_UNIX_FILL - MIN_READ_CHUNK) X >= ttyp->t_rawq.c_cc) X#else X && ((MAX_UNIX_FILL - MIN_READ_CHUNK) >= ttyp->t_rawq.c_cc) X#endif X && !(fip->flow_flags.i & FF_RXFER_STOPPED)) X { X event_sched (fip, EF_DO_RXFER); X } X X#if defined(FASI) X (void)wakeup((caddr_t)&fip->device_flags.i); X#endif X (void) splx (old_level); X return (0); X} X X/* write characters to the output buffer */ Xint Xfaswrite (dev) Xint dev; X{ X register struct fas_info *fip; X register struct tty *ttyp; X X fip = fas_info_ptr [GET_UNIT (dev)]; X X /* was the port present at init time ? */ X if (!(fip->device_flags.i & DF_DEVICE_CONFIGURED)) X { X u.u_error = ENXIO; X return (-1); X } X X ttyp = fip->tty; X X (*linesw [ttyp->t_line].l_write) (ttyp); X return (0); X} X X/*+------------------------------------------------------------------------- X strlen(str) X--------------------------------------------------------------------------*/ X#if defined(FASI) Xstatic int Xstrlen(str) Xregister char *str; X{ Xregister len = 0; X while(*str++) X len++; X return(len); X} /* end of strlen */ X#endif /* FASI */ X X/* process ioctl calls */ Xint Xfasioctl (dev, cmd, arg3, arg4) Xint dev; Xint cmd; Xunion ioctl_arg arg3; Xint arg4; X{ X register struct fas_info *fip; X register struct tty *ttyp; X int v86_cmd, v86_data; X int old_level; X REGVAR; X X fip = fas_info_ptr [GET_UNIT (dev)]; X X /* was the port present at init time ? */ X if (!(fip->device_flags.i & DF_DEVICE_CONFIGURED)) X { X u.u_error = ENXIO; X return (-1); X } X X ttyp = fip->tty; X X /* process ioctl commands */ X switch (cmd) X { X#if defined (FASI) X case FASIC_SIP_CHANGE: X (void) sleep ((caddr_t) &fip->device_flags.i, PZERO + 1); X case FASIC_SIP: X if(copyout((char *)fip,arg3.cparg,sizeof(*fip))) X { X u.u_error = EFAULT; X return(-1); X } X return(fasiintr_entries); X case FASIC_DVR_IDENT: X if(copyout(fasi_driver_ident,arg3.cparg, X strlen(fasi_driver_ident) + 1)) X { X u.u_error = EFAULT; X return(-1); X } X break; X case FASIC_SPACE_IDENT: X if(copyout(fasi_space_ident,arg3.cparg, X strlen(fasi_space_ident) + 1)) X { X u.u_error = EFAULT; X return(-1); X } X break; X case FASIC_MSR: X return((unsigned int)fip->msr); X case FASIC_LCR: X return((unsigned int)fip->lcr); X case FASIC_IER: X return((unsigned int)fip->ier); X case FASIC_MCR: X return((unsigned int)fip->mcr); X case FASIC_RESET_STAT: X old_level = SPLINT(); X fip->characters_received = 0; X fip->characters_transmitted = 0; X fip->modem_status_events = 0; X fip->overrun_errors = 0; X fip->framing_errors = 0; X fip->parity_errors = 0; X fip->rings_detected = 0; X fip->breaks_detected = 0; X fip->xmtr_hw_flow_count = 0; X fip->xmtr_sw_flow_count = 0; X fip->rcvr_hw_flow_count = 0; X fip->rcvr_sw_flow_count = 0; X (void)splx(old_level); X break; X#endif /* FASI */ X#if defined (HAVE_VPIX) X case AIOCINTTYPE: /* set pseudorupt type */ X switch (arg3.iarg) X { X case V86VI_KBD: X case V86VI_SERIAL0: X case V86VI_SERIAL1: X intr_disable (); X fip->v86_intmask = arg3.iarg; X intr_restore (); X break; X X default: X intr_disable (); X fip->v86_intmask = V86VI_SERIAL0; X intr_restore (); X break; X } X break; X X case AIOCDOSMODE: /* enable dos mode */ X if (!(fip->iflag & DOSMODE)) X { X old_level = SPLINT (); X fip->v86_proc = u.u_procp->p_v86; X if (!(fip->v86_intmask)) X fip->v86_intmask = V86VI_SERIAL0; X ttyp->t_iflag |= DOSMODE; X if (fip->v86_intmask != V86VI_KBD) X ttyp->t_cflag |= CLOCAL; X fas_param (fip, SOFT_INIT); X (void) splx (old_level); X } X u.u_r.r_reg.r_val1 = 0; X break; X X case AIOCNONDOSMODE: /* disable dos mode */ X if (fip->iflag & DOSMODE) X { X old_level = SPLINT (); X fip->v86_proc = (v86_t *) NULL; X fip->v86_intmask = 0; X ttyp->t_iflag &= ~DOSMODE; X if (fip->flow_flags.i & FF_RXFER_STOPPED) X { X fip->flow_flags.s &= ~FF_RXFER_STOPPED; X /* schedule character transfer X to UNIX buffer X */ X if (fip->recv_ring_cnt) X event_sched (fip, EF_DO_RXFER); X } X fip->lcr &= ~LC_SET_BREAK_LEVEL; X fas_param (fip, HARD_INIT); X (void) splx (old_level); X } X u.u_r.r_reg.r_val1 = 0; X break; X X case AIOCSERIALOUT: /* setup port registers for dos */ X if ((fip->iflag & DOSMODE) && fip->v86_proc) X { X /* wait until output is done */ X old_level = SPLINT (); X while (ttyp->t_outq.c_cc X || (ttyp->t_state & (BUSY | TIMEOUT))) X { X ttyp->t_state |= TTIOW; X (void) sleep ((caddr_t) &ttyp->t_oflag, X TTOPRI); X } X X /* block transmitter and wait until it is X empty X */ X fip->device_flags.s |= DF_XMIT_LOCKED; X while (fip->device_flags.i & (DF_XMIT_BUSY X | DF_XMIT_BREAK X | DF_GUARD_TIMEOUT)) X (void) sleep ((caddr_t) &fip-> X device_flags.i, X PZERO - 1); X (void) splx (old_level); X X /* get port write command */ X v86_cmd = fubyte (arg3.cparg); X /* set divisor lsb requested */ X if (v86_cmd & SIO_MASK(SO_DIVLLSB)) X { X v86_data = fubyte (arg3.cparg X + SO_DIVLLSB); X intr_disable (); X fas_first_outb (fip, LINE_CTL_PORT, fip->lcr X | LC_ENABLE_DIVISOR); X fas_outb (fip, DIVISOR_LSB_PORT, v86_data); X fas_outb (fip, LINE_CTL_PORT, fip->lcr X & ~LC_ENABLE_DIVISOR); X intr_restore (); X } X /* set divisor msb requested */ X if (v86_cmd & SIO_MASK(SO_DIVLMSB)) X { X v86_data = fubyte (arg3.cparg X + SO_DIVLMSB); X intr_disable (); X fas_first_outb (fip, LINE_CTL_PORT, fip->lcr X | LC_ENABLE_DIVISOR); X fas_outb (fip, DIVISOR_MSB_PORT, v86_data); X fas_outb (fip, LINE_CTL_PORT, fip->lcr X & ~LC_ENABLE_DIVISOR); X intr_restore (); X } X /* set lcr requested */ X if (v86_cmd & SIO_MASK(SO_LCR)) X { X v86_data = fubyte (arg3.cparg + SO_LCR); X intr_disable (); X fip->lcr = v86_data X & ~LC_ENABLE_DIVISOR; X fas_first_outb (fip, LINE_CTL_PORT, fip->lcr); X intr_restore (); X } X /* set mcr requested */ X if (v86_cmd & SIO_MASK(SO_MCR)) X { X v86_data = fubyte (arg3.cparg + SO_MCR); X old_level = SPLINT (); X /* virtual dtr processing */ X if (v86_data & MC_SET_DTR) X { X fip->device_flags.s X |= DF_MODEM_ENABLED; X fip->mcr |= (fip->o_state X & OS_WAIT_OPEN) X ? fip->modem.m.ei X : fip->modem.m.eo; X } X else X { X fip->device_flags.s X &= ~DF_MODEM_ENABLED; X fip->mcr &= (fip->o_state X & OS_WAIT_OPEN) X ? ~fip->modem.m.ei X : ~fip->modem.m.eo; X } X /* virtual rts processing */ X if (fip->flow_flags.i X & FF_HWI_HANDSHAKE) X { X if (v86_data & MC_SET_RTS) X { X if (fip->flow_flags.i X & FF_RXFER_STOPPED) X { X fip->flow_flags.s X &= ~FF_RXFER_STOPPED; X /* schedule character transfer X to UNIX buffer X */ X if (fip->recv_ring_cnt) X event_sched (fip, X EF_DO_RXFER); X } X } X else X fip->flow_flags.s X |= FF_RXFER_STOPPED; X } X else if (!(fip->flow_flags.i X & FF_HDX_HANDSHAKE)) X { X if (v86_data & MC_SET_RTS) X { X fip->flow_flags.s X |= FF_HDX_STARTED; X fip->mcr X |= fip->flow.m.hc; X } X else X { X fip->flow_flags.s X &= ~FF_HDX_STARTED; X fip->mcr X &= ~fip->flow.m.hc; X } X } X fas_first_outb (fip, MDM_CTL_PORT, fip->mcr); X (void) splx (old_level); X } X X old_level = SPLINT (); X /* enable transmitter and restart output */ X fip->device_flags.s &= ~DF_XMIT_LOCKED; X fas_xproc (fip); X (void) splx (old_level); X } X break; X X case AIOCSERIALIN: /* read port registers for dos */ X if ((fip->iflag & DOSMODE) && fip->v86_proc) X { X v86_cmd = fubyte (arg3.cparg); X if (v86_cmd & SIO_MASK(SI_MSR)) X { X (void) subyte (arg3.cparg + SI_MSR, X ((fip->flow_flags.i X & FF_HWO_HANDSHAKE) X ? fip->msr X | fip->flow.m.oc X | fip->flow.m.oe X : fip->msr) X & MS_ANY_PRESENT); X } X } X break; X X case AIOCSETSS: /* set start/stop characters */ X intr_disable (); X *((short *) (&fip->v86_ss)) = arg3.iarg; X intr_restore (); X break; X X case AIOCINFO: /* show what type of device we are */ X u.u_r.r_reg.r_val1 = ('a' << 8) | (uint) ((unchar) dev); X break; X#endif X default: /* default ioctl processing */ X /* if it is a TCSETA* command, call fas_param () */ X if (ttiocom (ttyp, cmd, arg3, arg4)) X { X old_level = SPLINT (); X fas_param (fip, SOFT_INIT); X (void) splx (old_level); X } X break; X } X return (0); X} X X/* pass fas commands to the fas multi-function procedure */ Xstatic int Xfas_proc (ttyp, arg2) Xstruct tty *ttyp; Xint arg2; X{ X register uint physical_unit; X int old_level; X X physical_unit = ttyp - &fas_tty [0]; X if (physical_unit >= fas_physical_units) X physical_unit -= fas_physical_units; X X old_level = SPLINT (); X fas_cmd (fas_info_ptr [physical_unit], ttyp, arg2); X (void) splx (old_level); X return (0); X} X X/* set up a port according to the given termio structure */ Xstatic void Xfas_param (fip, init_type) Xregister struct fas_info *fip; Xint init_type; X{ X register uint cflag; X uint divisor; X int xmit_ring_size; X REGVAR; X X cflag = fip->tty->t_cflag; X X#if defined (HAVE_VPIX) X /* we don't set port registers if we are in dos mode */ X if (fip->tty->t_iflag & DOSMODE) X goto setflags2; X#endif X /* if soft init mode: don't set port registers if cflag didn't change */ X if ((init_type == SOFT_INIT) && !((cflag ^ fip->cflag) X & (CBAUD | CSIZE | CSTOPB X | PARENB | PARODD))) X goto setflags; X X /* lock transmitter and wait until it is empty */ X fip->device_flags.s |= DF_XMIT_LOCKED; X while (fip->device_flags.i & (DF_XMIT_BUSY | DF_XMIT_BREAK X | DF_GUARD_TIMEOUT)) X (void) sleep ((caddr_t) &fip->device_flags.i, PZERO - 1); X X /* hangup line if it is baud rate 0, else enable line */ X if ((cflag & CBAUD) == B0) X { X fip->mcr &= (fip->o_state & OS_WAIT_OPEN) X ? ~fip->modem.m.ei X : ~fip->modem.m.eo; X fas_first_outb (fip, MDM_CTL_PORT, fip->mcr); X fip->device_flags.s &= ~DF_MODEM_ENABLED; X } X else X { X if (!(fip->device_flags.i & DF_MODEM_ENABLED)) X { X fip->mcr |= (fip->o_state & OS_WAIT_OPEN) X ? fip->modem.m.ei X : fip->modem.m.eo; X fas_first_outb (fip, MDM_CTL_PORT, fip->mcr); X fip->device_flags.s |= DF_MODEM_ENABLED; X } X } X X /* don't change break flag */ X fip->lcr &= LC_SET_BREAK_LEVEL; X X /* set character size */ X switch (cflag & CSIZE) X { X case CS5: X fip->lcr |= LC_WORDLEN_5; X break; X X case CS6: X fip->lcr |= LC_WORDLEN_6; X break; X X case CS7: X fip->lcr |= LC_WORDLEN_7; X break; X X default: X fip->lcr |= LC_WORDLEN_8; X break; X } X X /* set # of stop bits */ X if (cflag & CSTOPB) X fip->lcr |= LC_STOPBITS_LONG; X X /* set parity */ X if (cflag & PARENB) X { X fip->lcr |= LC_ENABLE_PARITY; X X if (!(cflag & PARODD)) X fip->lcr |= LC_EVEN_PARITY; X } X X /* set divisor registers only if baud rate is valid */ X if ((cflag & CBAUD) != B0) X { X /* get counter divisor for selected baud rate */ X divisor = fas_speeds [cflag & CBAUD]; X /* set LCR and baud rate */ X fas_first_outb (fip, LINE_CTL_PORT, fip->lcr X | LC_ENABLE_DIVISOR); X fas_outb (fip, DIVISOR_LSB_PORT, divisor); X fas_outb (fip, DIVISOR_MSB_PORT, divisor >> 8); X } X X fas_first_outb (fip, LINE_CTL_PORT, fip->lcr); X Xsetflags: X /* check dynamic xmit ring buffer size against boundaries, X modify it if necessary and update the fas_info structure X */ X if ((cflag & CBAUD) != B0) X { X xmit_ring_size = fas_xbuf_size [cflag & CBAUD] X - tthiwat [cflag & CBAUD]; X if (xmit_ring_size < MAX_OUTPUT_FIFO_SIZE * 2) X { Xsetflags2: X xmit_ring_size = MAX_OUTPUT_FIFO_SIZE * 2; X } X if (xmit_ring_size > XMIT_BUFF_SIZE) X xmit_ring_size = XMIT_BUFF_SIZE; X fip->xmit_ring_size = xmit_ring_size; X } X X /* setup character time for B0 mode */ X fas_ctimes [B0] = fas_ctimes [cflag & CBAUD]; X X /* disable modem control signals if required by open mode */ X if (fip->o_state & OS_CLOCAL) X cflag |= CLOCAL; X X /* Select hardware handshake depending on the minor device X number and the CTSFLOW and RTSFLOW flags (if they are X available). X */ X fip->flow_flags.s &= ~(FF_HWO_HANDSHAKE X | FF_HWI_HANDSHAKE X | FF_HDX_HANDSHAKE); X if (fip->o_state & (OS_HWO_HANDSHAKE | OS_HWI_HANDSHAKE X | OS_HDX_HANDSHAKE)) X { X if (fip->o_state & OS_HWO_HANDSHAKE) X fip->flow_flags.s |= FF_HWO_HANDSHAKE; X if (fip->o_state & OS_HWI_HANDSHAKE) X fip->flow_flags.s |= FF_HWI_HANDSHAKE; X if (fip->o_state & OS_HDX_HANDSHAKE) X fip->flow_flags.s |= FF_HDX_HANDSHAKE; X } X else X { X#if defined (CTSFLOW) /* SYSV 3.2 Xenix compatibility */ X if ((cflag & (CTSFLOW | CLOCAL)) == CTSFLOW) X fip->flow_flags.s |= FF_HWO_HANDSHAKE; X#endif X#if defined (RTSFLOW) /* SYSV 3.2 Xenix compatibility */ X if ((cflag & (RTSFLOW | CLOCAL)) == RTSFLOW) X fip->flow_flags.s |= FF_HDX_HANDSHAKE; X#endif X } X X /* Fake the carrier detect state flag if CLOCAL mode or if X requested by open mode. X */ X if (!(~fip->msr & fip->modem.m.ca) X || (fip->o_state & OS_FAKE_CARR_ON) X || (cflag & CLOCAL)) X fip->tty->t_state |= CARR_ON; X else X fip->tty->t_state &= ~CARR_ON; X X#if defined (XCLUDE) /* SYSV 3.2 Xenix compatibility */ X /* Permit exclusive use of this device. */ X if (cflag & XCLUDE) X fip->o_state |= OS_EXCLUSIVE_OPEN_2; X else X fip->o_state &= ~OS_EXCLUSIVE_OPEN_2; X#endif X X fip->cflag = cflag; X fip->iflag = fip->tty->t_iflag; X X /* enable transmitter */ X fip->device_flags.s &= ~DF_XMIT_LOCKED; X X /* setup handshake flags */ X fas_hdx_check (fip); X fas_ihlw_check (fip); X fas_fproc (fip, fip->new_msr); X X /* restart output */ X fas_xproc (fip); X} X X/* Main fas interrupt handler. Actual character processing is splitted X into sub-functions. X*/ Xint Xfasintr (vect) Xint vect; X{ X register struct fas_info *fip; X register uint status; X struct fas_info *old_fip; X int done, drop_mode; X uint port, old_recv_count; X REGVAR; X X#if defined(FASI) X fasiintr_entries++; X#endif /* FASI */ X X drop_mode = FALSE; X X /* The 8259 interrupt controller is set up for edge trigger. X Therefor, we must loop until we make a complete pass without X getting any UARTs that are interrupting. X */ X do X { X done = TRUE; X fip = fas_first_int_user [vect]; X X /* loop through all users of this interrupt vector */ X for (;; fip = fip->next_int_user) X { X if (!fip) X break; /* all users done */ X X /* process only ports that we expect ints from X and that actually need to be serviced X */ Xfastloop: X if (fas_first_inb (fip, INT_ID_PORT) X & II_NO_INTS_PENDING) X { X /* restore the normal receiver trigger level */ X if (fip->device_flags.i & DF_NS16550A_DROP_MODE) X { X fip->device_flags.s &= X ~DF_NS16550A_DROP_MODE; X fas_outb (fip, NS_FIFO_CTL_PORT, X NS_FIFO_SETUP_CMD); X } X /* speed beats beauty */ X fip = fip->next_int_user; X if (fip) X goto fastloop; X break; X } X X /* restore the normal receiver trigger level */ X if (fip->device_flags.i & DF_NS16550A_DROP_MODE) X { X fip->device_flags.s &= ~DF_NS16550A_DROP_MODE; X fas_outb (fip, NS_FIFO_CTL_PORT, X NS_FIFO_SETUP_CMD); X } X X done = FALSE; /* not done if we got an int */ X old_recv_count = fip->recv_ring_cnt; X X do X { X /* read in all the characters from the FIFO */ X if ((status = fas_inb (fip, LINE_STATUS_PORT)) X & LS_RCV_INT) X { X if (!drop_mode && (fip->device_flags.i X & DF_DEVICE_IS_NS16550A)) X { X /* Drop receiver trigger levels to make X sure that we will see all received X characters in all NS16550A. This X prevents multiple interrupts if we X receive characters on more than one X unit. X */ X old_fip = fip; X for (fip = fas_first_int_user [vect]; X fip; fip = fip->next_int_user) X { X if ((fip->device_flags.i X & DF_DEVICE_IS_NS16550A) X && (fip != old_fip)) X { X fip->device_flags.s |= X DF_NS16550A_DROP_MODE; X fas_first_outb (fip, X NS_FIFO_CTL_PORT, X NS_FIFO_DROP_CMD); X } X } X fip = old_fip; X drop_mode = TRUE; X } X status = fas_rproc (fip, status); X sysinfo.rcvint++; X } X X /* Is it a transmitter empty int ? */ X if ((status & LS_XMIT_AVAIL) X && (fip->device_flags.i & DF_XMIT_BUSY)) X { X fip->device_flags.s &= ~DF_XMIT_BUSY; X fas_xproc (fip); X if (!(fip->device_flags.i X & DF_XMIT_BUSY)) X { X fip->device_flags.s |= X DF_GUARD_TIMEOUT; X fip->tty->t_state |= X TIMEOUT; X fip->timeout_idx = X timeout ( X fas_timeout, fip, X fas_ctimes [fip->cflag X & CBAUD]); X } X sysinfo.xmtint++; X } X X /* Has there been a polarity change on X some of the modem lines ? X */ X if ((status = fas_inb (fip, MDM_STATUS_PORT)) X & MS_ANY_DELTA) X { X /* Do special RING line handling. X RING generates an int only on the X trailing edge. X */ X status = (status & ~MS_RING_PRESENT) X | (fip->new_msr X & MS_RING_PRESENT); X if (status & MS_RING_TEDGE) X#if defined(FASI) X fip->rings_detected++, X#endif /* FASI */ X status |= MS_RING_PRESENT; X if ((status ^ fip->new_msr) X & MS_ANY_PRESENT) X { X /* check for excessive modem X status interrupts X */ X if (++fip->msi_cnt > X (MAX_MSI_CNT / HZ) X * (EVENT_TIME * HZ X / 1000)) X { X fip->ier = IE_NONE; X fas_outb (fip, X INT_ENABLE_PORT, X fip->ier); X } X /* check hw flow flags */ X fas_fproc (fip, status); X fip->new_msr = status; X event_sched (fip, EF_DO_MPROC); X } X sysinfo.mdmint++; X#if defined(FASI) X fip->modem_status_events++; X#endif /* FASI */ X } X } while (!(fas_inb (fip, INT_ID_PORT) X & II_NO_INTS_PENDING)); X X /* schedule character transfer to UNIX buffer */ X if (fip->recv_ring_cnt X#if defined (HAVE_VPIX) X && (((fip->iflag & DOSMODE) X ? MAX_VPIX_FILL - MIN_READ_CHUNK X : MAX_UNIX_FILL - MIN_READ_CHUNK) X >= fip->tty->t_rawq.c_cc) X#else X && ((MAX_UNIX_FILL - MIN_READ_CHUNK) X >= fip->tty->t_rawq.c_cc) X#endif X && !(fip->flow_flags.i & FF_RXFER_STOPPED)) X { X event_sched (fip, EF_DO_RXFER); X } X X /* check input buffer high/low water marks */ X if (fip->recv_ring_cnt != old_recv_count) X fas_ihlw_check (fip); X } X } while (!done); X X /* clear the shared interrupt since we have scanned all X of the ports that share this interrupt vector X */ X if (port = fas_int_ack_port [vect]) X (void) outb (port, fas_int_ack [vect]); X X return (0); X} X X/* hardware flow control interrupt handler */ Xstatic void Xfas_fproc (fip, mdm_status) Xregister struct fas_info *fip; Xregister uint mdm_status; X{ X /* Check the output flow control signals and set the state flag X accordingly. X */ X if (!(~mdm_status & fip->flow.m.oc) X || (~mdm_status & fip->flow.m.oe) X || !(fip->flow_flags.i & FF_HWO_HANDSHAKE)) X { X if (fip->flow_flags.i & FF_HWO_STOPPED) X { X fip->flow_flags.s &= ~FF_HWO_STOPPED; X fas_xproc (fip); X } X } X else X#if defined(FASI) X fip->xmtr_hw_flow_count++, X wakeup((caddr_t)&fip->device_flags.i), X#endif /* FASI */ X fip->flow_flags.s |= FF_HWO_STOPPED; X} X X/* modem status handler */ Xstatic void Xfas_mproc (fip) Xregister struct fas_info *fip; X{ X register struct tty *ttyp; X register uint mdm_status; X uint vpix_status; X int old_level; X X ttyp = fip->tty; X mdm_status = fip->new_msr; X fip->new_msr &= ~MS_RING_PRESENT; X X /* Check the carrier detect signal and set the state flags X accordingly. Also, if not in clocal mode, send SIGHUP on X carrier loss and flush the buffers. X */ X if (!(fip->cflag & CLOCAL)) X { X if (!(~mdm_status & fip->modem.m.ca)) X { X ttyp->t_state |= CARR_ON; X /* Unblock getty open only if it is ready to run. */ X if ((ttyp->t_state & WOPEN) X && (~fip->msr & fip->modem.m.ca)) X#if defined(FASI) X { X#endif X (void) wakeup ((caddr_t) &ttyp->t_canq); X#if defined(FASI) X (void)wakeup((caddr_t)&fip->device_flags.i); X } X#endif X } X else X { X if (!(~fip->msr & fip->modem.m.ca)) X { X ttyp->t_state &= ~CARR_ON; X old_level = SPLWRK (); X if (ttyp->t_state & ISOPEN) X (void) signal (ttyp->t_pgrp, SIGHUP); X (void) ttyflush (ttyp, FREAD | FWRITE); X (void) splx (old_level); X } X } X } X X#if defined (HAVE_VPIX) X if (((fip->iflag & (DOSMODE | PARMRK)) X == (DOSMODE | PARMRK)) X && (fip->v86_intmask != V86VI_KBD)) X { X /* prepare status bits for VP/ix */ X vpix_status = (((mdm_status ^ fip->msr) >> 4) & MS_ANY_DELTA) X | (mdm_status & (MS_CTS_PRESENT X | MS_DSR_PRESENT X | MS_DCD_PRESENT)); X if (fip->flow_flags.i & FF_HWO_HANDSHAKE) X { X vpix_status &= ~((fip->flow.m.oc | fip->flow.m.oe) X >> 4); X vpix_status |= fip->flow.m.oc | fip->flow.m.oe; X } X /* send status bits to VP/ix */ X if ((vpix_status & MS_ANY_DELTA) X && fas_vpix_sr (fip, 2, vpix_status)) X event_sched (fip, EF_DO_RXFER); X } X#endif X fip->msr = mdm_status & ~MS_RING_PRESENT; X X /* re-schedule if modem status flags have changed in the mean time */ X if ((fip->new_msr ^ fip->msr) & MS_ANY_PRESENT) X { X event_sched (fip, EF_DO_MPROC) X } X#if defined(FASI) X else X (void)wakeup((caddr_t)&fip->device_flags.i); X#endif /* FASI */ X} X X/* Receiver interrupt handler. Translates input characters to character X sequences as described in TERMIO(7) man page. X*/ Xstatic uint Xfas_rproc (fip, line_status) Xregister struct fas_info *fip; Xuint line_status; X{ X struct tty *ttyp; X uint charac; X register uint csize; X unchar metta [4]; X REGVAR; X X ttyp = fip->tty; X X fas_first_ctl (fip, RCV_DATA_PORT); X X /* Translate characters from FIFO according to the TERMIO(7) X man page. X */ X do X { X charac = (line_status & LS_RCV_AVAIL) X#if defined(FASI) X ? (fip->characters_received++,fas_inb (fip, RCV_DATA_PORT)) X#else X ? fas_inb (fip, RCV_DATA_PORT) X#endif /* FASI */ X : 0; /* was line status int only */ X X /* do we have to junk the character ? */ X if (!(fip->cflag & CREAD) X || ((ttyp->t_state & (ISOPEN | CARR_ON)) != X (ISOPEN | CARR_ON))) X { X /* if there are FIFOs we take a short cut */ X if (fip->device_flags.i & DF_DEVICE_IS_NS16550A) X fas_outb (fip, NS_FIFO_CTL_PORT, NS_FIFO_SETUP_CMD X | NS_FIFO_CLR_RECV); X else if (fip->device_flags.i & DF_DEVICE_IS_I82510) X { X fas_outb (fip, I_BANK_PORT, I_BANK_1); X fas_outb (fip, I_RCM_PORT, I_FIFO_CLR_RECV); X fas_outb (fip, I_BANK_PORT, I_BANK_0); X } X continue; X } X X csize = 0; X X /* strip off 8th bit ? */ X if (fip->iflag & ISTRIP) X charac &= 0x7f; X X /* ignore parity errors ? */ X if ((line_status & LS_PARITY_ERROR) X && !(fip->iflag & INPCK)) X line_status &= ~LS_PARITY_ERROR; X X#if defined(FASI) X if(line_status & LS_OVERRUN) X fip->overrun_errors++; X#endif /* FASI */ X X /* do we have some kind of character error ? */ X if (line_status & (LS_PARITY_ERROR X | LS_FRAMING_ERROR X | LS_BREAK_DETECTED)) X { X#if defined(FASI) X if(line_status & LS_PARITY_ERROR) X fip->parity_errors++; X if(line_status & LS_FRAMING_ERROR) X fip->framing_errors++; X if(line_status & LS_BREAK_DETECTED) X fip->breaks_detected++; X#endif /* FASI */ X#if defined (HAVE_VPIX) X if ((fip->iflag & (DOSMODE | PARMRK)) X == (DOSMODE | PARMRK)) X { X /* send status bits to VP/ix */ X (void) fas_vpix_sr (fip, 1, X (line_status & (LS_PARITY_ERROR X | LS_FRAMING_ERROR X | LS_BREAK_DETECTED)) X | LS_RCV_AVAIL X | LS_XMIT_AVAIL X | LS_XMIT_COMPLETE); X goto valid_char; X } X#endif X /* is it a BREAK ? */ X if (line_status & LS_BREAK_DETECTED) X { X if (!(fip->iflag & IGNBRK)) X if (fip->iflag & BRKINT) X { X /* do BREAK interrupt */ X event_sched (fip, EF_DO_BRKINT); X } X else X { X metta [csize] = 0; X csize++; X if (fip->iflag & PARMRK) X { X metta [csize] = 0; X csize++; X metta [csize] = 0xff; X csize++; X } X } X } X else if (!(fip->iflag & IGNPAR)) X if (fip->iflag & PARMRK) X { X metta [csize] = charac; X csize++; X metta [csize] = 0; X csize++; X metta [csize] = 0xff; X csize++; X } X else X { X metta [csize] = 0; X csize++; X } X } X else X /* is there a character to process ? */ X if (line_status & LS_RCV_AVAIL) X { X if (fip->iflag & IXON) X { X /* do output start/stop handling */ X if (fip->flow_flags.i & FF_SWO_STOPPED) X { X#if defined (HAVE_VPIX) X if ((charac == fip->v86_ss.ss_start) X#else X if ((charac == CSTART) X#endif X || (fip->iflag & IXANY)) X { X fip->flow_flags.s &= X ~FF_SWO_STOPPED; X ttyp->t_state &= ~TTSTOP; X /* restart output */ X fas_xproc (fip); X } X } X else X { X#if defined (HAVE_VPIX) X if (charac == fip->v86_ss.ss_stop) X#else X if (charac == CSTOP) X#endif X { X fip->flow_flags.s |= X FF_SWO_STOPPED; X ttyp->t_state |= TTSTOP; X } X } X /* we don't put start/stop characters X into the receiver buffer X */ X#if defined (HAVE_VPIX) X if ((charac == fip->v86_ss.ss_start) X || (charac == fip->v86_ss.ss_stop)) X#else X if ((charac == CSTART) X || (charac == CSTOP)) X#endif X continue; X } Xvalid_char: X if ((charac == 0xff) && (fip->iflag & PARMRK)) X { X metta [csize] = 0xff; X csize++; X metta [csize] = 0xff; X csize++; X } X else X { X /* we take a short-cut if only one character X has to be put into the receiver buffer X */ X if (fip->recv_ring_cnt < RECV_BUFF_SIZE) X { X fip->recv_ring_cnt++; X *fip->recv_ring_put_ptr = charac; X if (++fip->recv_ring_put_ptr X != &fip->recv_buffer X [RECV_BUFF_SIZE]) X continue; X fip->recv_ring_put_ptr = X &fip->recv_buffer [0]; X } X continue; X } X } X X if (!(csize) || (fip->recv_ring_cnt + csize > RECV_BUFF_SIZE)) X continue; /* nothing to put into recv buffer */ X X fip->recv_ring_cnt += csize; X X /* store translation in ring buffer */ X do X { X do X { X *fip->recv_ring_put_ptr = (metta - 1) [csize]; X if (++fip->recv_ring_put_ptr X == &fip->recv_buffer [RECV_BUFF_SIZE]) X break; X } while (--csize); X if (!csize) X break; X fip->recv_ring_put_ptr = &fip->recv_buffer [0]; X } while (--csize); X } while ((line_status = fas_inb (fip, LINE_STATUS_PORT)) & LS_RCV_INT); X X return (line_status); X} X X/* Output characters to the transmitter register. */ Xstatic void Xfas_xproc (fip) Xregister struct fas_info *fip; X{ X register uint num_to_output; X REGVAR; X X /* proceed only if transmitter is available */ X if ((fip->device_flags.i & (DF_XMIT_BUSY | DF_XMIT_BREAK X | DF_XMIT_LOCKED)) X || (fip->flow_flags.i & FF_HWO_STOPPED)) X goto sched; X X num_to_output = fip->xmit_fifo_size; X X /* handle XON/XOFF input flow control requests */ X if (fip->flow_flags.i & FF_SW_FC_REQ) X { X#if defined (HAVE_VPIX) X fas_first_outb (fip, XMT_DATA_PORT, (fip->flow_flags.i & FF_SWI_STOPPED) X ? fip->v86_ss.ss_stop X : fip->v86_ss.ss_start); X#else X fas_first_outb (fip, XMT_DATA_PORT, (fip->flow_flags.i & FF_SWI_STOPPED) X ? CSTOP X : CSTART); X#endif X fip->tty->t_state &= ~(TTXON | TTXOFF); X fip->device_flags.s |= DF_XMIT_BUSY; X fip->flow_flags.s &= ~FF_SW_FC_REQ; X /* disable guard timeout */ X if (fip->device_flags.i & DF_GUARD_TIMEOUT) X { X fip->device_flags.s &= ~DF_GUARD_TIMEOUT; X fip->tty->t_state &= ~TIMEOUT; X (void) untimeout (fip->timeout_idx); X } X num_to_output--; X } X X /* bail out if output is suspended by XOFF */ X if (fip->flow_flags.i & FF_SWO_STOPPED) X goto sched; X X /* Determine how many chars to put into the transmitter X register. X */ X if (fip->xmit_ring_cnt < num_to_output) X num_to_output = fip->xmit_ring_cnt; X X /* no characters available ? */ X if (!num_to_output) X goto sched; X X /* output characters */ X fip->xmit_ring_cnt -= num_to_output; X X fas_ctl (fip, XMT_DATA_PORT); X X#if defined(FASI) X fip->characters_transmitted += num_to_output; X#endif /* FASI */ X X do X { X do X { X (void) outb (XMT_DATA_PORT.addr, X *fip->xmit_ring_take_ptr); X if (++fip->xmit_ring_take_ptr X == &fip->xmit_buffer [XMIT_BUFF_SIZE]) X break; X } while (--num_to_output); X if (!num_to_output) X break; X fip->xmit_ring_take_ptr = &fip->xmit_buffer [0]; X } while (--num_to_output); X X /* signal that transmitter is busy now */ X fip->device_flags.s |= DF_XMIT_BUSY; X /* disable guard timeout */ X if (fip->device_flags.i & DF_GUARD_TIMEOUT) X { X fip->device_flags.s &= ~DF_GUARD_TIMEOUT; X fip->tty->t_state &= ~TIMEOUT; X (void) untimeout (fip->timeout_idx); X } X X /* schedule fas_xxfer () if there are more characters to transfer X into the transmitter ring buffer X */ Xsched: X if ((fip->xmit_ring_size > fip->xmit_ring_cnt) X && (fip->tty->t_outq.c_cc || fip->tty->t_tbuf.c_count)) X { X event_sched (fip, EF_DO_XXFER); X } X} X X/* Asynchronous event handler. Scheduled by functions that can't do the X processing themselves because of execution time restrictions. X*/ Xstatic void Xfas_event (dummy) Xvoid *dummy; X{ X register struct fas_info *fip; X register uint unit; X int old_level; X X old_level = SPLINT (); X X unit = 0; X fip = &fas_info [0]; X X /* loop through all fas_info structures */ X for (;; fip++, unit++) X { X if (unit >= fas_physical_units) X break; /* all structures done */ X X /* process only structures that actually need to X be serviced X */ Xfastloop2: X if (!fip->event_flags.i) X { X /* speed beats beauty */ X fip++; X if (++unit < fas_physical_units) X goto fastloop2; X break; X } X X do X { X /* check the modem signals */ X if (fip->event_flags.i & EF_DO_MPROC) X { X fip->event_flags.s &= ~EF_DO_MPROC; X fas_mproc (fip); X /* disable the device if there were too many modem X status interrupts X */ X if (fip->msi_cnt > (MAX_MSI_CNT / HZ) X * (EVENT_TIME * HZ / 1000)) X { X fip->device_flags.s &= ~(DF_DEVICE_CONFIGURED X | DF_XMIT_BUSY X | DF_XMIT_BREAK); X fip->device_flags.s |= DF_XMIT_LOCKED; X if (fip->device_flags.i & DF_GUARD_TIMEOUT) X { X fip->device_flags.s &= X ~DF_GUARD_TIMEOUT; X fip->tty->t_state &= ~TIMEOUT; X (void) untimeout (fip->timeout_idx); X (void) wakeup ((caddr_t) &(fip)-> X device_flags.i); X } X fip->tty->t_state &= ~CARR_ON; X (void) SPLWRK (); X if (!(fip->cflag & CLOCAL) X && (fip->tty->t_state & ISOPEN)) X (void) signal (fip->tty->t_pgrp, X SIGHUP); X (void) ttyflush (fip->tty, FREAD | FWRITE); X (void) printf ("\nWARNING: Excessive modem status interrupts on FAS unit %d (check the cabling).\n", X fip - &fas_info [0]); X (void) SPLINT (); X } X fip->msi_cnt = 0; X } X X /* do the break interrupt */ X if (fip->event_flags.i & EF_DO_BRKINT) X { X fip->event_flags.s &= ~EF_DO_BRKINT; X if (fip->tty->t_state & ISOPEN) X { X (void) SPLWRK (); X (*linesw [fip->tty->t_line].l_input) X (fip->tty, L_BREAK); X (void) SPLINT (); X } X } X X /* transfer characters to the UNIX input buffer */ X if (fip->event_flags.i & EF_DO_RXFER) X { X fip->event_flags.s &= ~EF_DO_RXFER; X if (!(fip->flow_flags.i & FF_RXFER_STOPPED)) X { X (void) SPLWRK (); X fas_rxfer (fip); X (void) SPLINT (); X /* check input buffer high/low water marks */ X fas_ihlw_check (fip); X } X } X X /* transfer characters to the output ring buffer */ X if (fip->event_flags.i & EF_DO_XXFER) X { X fip->event_flags.s &= ~EF_DO_XXFER; X (void) SPLWRK (); X fas_xxfer (fip); X (void) SPLINT (); X fas_hdx_check (fip); X /* output characters */ X fas_xproc (fip); X } X X#if defined (HAVE_VPIX) X /* send pseudorupt to VP/ix */ X if (fip->event_flags.i & EF_SIGNAL_VPIX) X { X fip->event_flags.s &= ~EF_SIGNAL_VPIX; X if ((fip->iflag & DOSMODE) && fip->v86_proc) X { X (void) SPLWRK (); X (void) v86setint (fip->v86_proc, X fip->v86_intmask); X (void) SPLINT (); X } X } X#endif X } while (fip->event_flags.i); X X /* allow pending tty interrupts */ X (void) SPLWRK (); X (void) SPLINT (); X } X X event_scheduled = FALSE; X X /* check whether there have been new requests in the mean time */ X for (unit = 0, fip = &fas_info [0]; unit < fas_physical_units; X fip++, unit++) X if (fip->event_flags.i) X { X /* there is at least one new request, so X schedule the next event processing X */ X event_scheduled = TRUE; X (void) timeout (fas_event, (void *) NULL, X (EVENT_TIME) * (HZ) / 1000); X break; X } X X#if defined(FASI) X (void)wakeup((caddr_t)&fip->device_flags.i); X#endif /* FASI */ X (void) splx (old_level); X} X X#if defined (HAVE_VPIX) X/* Send port status register to VP/ix */ Xstatic int Xfas_vpix_sr (fip, token, status) Xregister struct fas_info *fip; Xuint token; Xuint status; X{ X if ((fip->recv_ring_cnt <= RECV_BUFF_SIZE - 3) X && ((fip->tty->t_state & (ISOPEN | CARR_ON)) == X (ISOPEN | CARR_ON))) X { X /* sent the character sequence 0xff, <token>, <status> X to VP/ix X */ X fip->recv_ring_cnt += 3; X X *fip->recv_ring_put_ptr = 0xff; X if (++fip->recv_ring_put_ptr X == &fip->recv_buffer [RECV_BUFF_SIZE]) X fip->recv_ring_put_ptr X = &fip->recv_buffer [0]; X *fip->recv_ring_put_ptr = token; X if (++fip->recv_ring_put_ptr X == &fip->recv_buffer [RECV_BUFF_SIZE]) X fip->recv_ring_put_ptr X = &fip->recv_buffer [0]; X *fip->recv_ring_put_ptr = status; X if (++fip->recv_ring_put_ptr X == &fip->recv_buffer [RECV_BUFF_SIZE]) X fip->recv_ring_put_ptr X = &fip->recv_buffer [0]; X return (TRUE); X } X return (FALSE); X} X#endif X X/* Receiver ring buffer -> UNIX buffer transfer function. */ Xstatic void Xfas_rxfer (fip) Xregister struct fas_info *fip; X{ X register struct tty *ttyp; X register int num_to_xfer; X int num_save; X int old_level; X X ttyp = fip->tty; X X for (;;) X { X if (!fip->recv_ring_cnt || !ttyp->t_rbuf.c_ptr) X break; /* no characters to transfer */ X X /* determine how many characters to transfer */ X#if defined (HAVE_VPIX) X num_to_xfer = ((fip->iflag & DOSMODE) X ? MAX_VPIX_FILL X : MAX_UNIX_FILL) - ttyp->t_rawq.c_cc; X#else X num_to_xfer = MAX_UNIX_FILL - ttyp->t_rawq.c_cc; X#endif X X if (num_to_xfer < MIN_READ_CHUNK) X break; /* input buffer full */ X X#if defined (HAVE_VPIX) X /* wakeup VP/ix */ X if ((fip->iflag & DOSMODE) && !ttyp->t_rawq.c_cc) X event_sched (fip, EF_SIGNAL_VPIX); X#endif X X /* determine how many characters are in one contigous block */ X if (fip->recv_ring_cnt < num_to_xfer) X num_to_xfer = fip->recv_ring_cnt; X if (&fip->recv_buffer [RECV_BUFF_SIZE] - fip->recv_ring_take_ptr X < num_to_xfer) X num_to_xfer = &fip->recv_buffer [RECV_BUFF_SIZE] X - fip->recv_ring_take_ptr; X if (ttyp->t_rbuf.c_count < num_to_xfer) X num_to_xfer = ttyp->t_rbuf.c_count; X X num_save = num_to_xfer; X ttyp->t_rbuf.c_count -= num_to_xfer; X X /* do the transfer */ X do X { X *ttyp->t_rbuf.c_ptr = *fip->recv_ring_take_ptr; X ttyp->t_rbuf.c_ptr++; X fip->recv_ring_take_ptr++; X } while (--num_to_xfer); X X if (fip->recv_ring_take_ptr == &fip->recv_buffer [RECV_BUFF_SIZE]) X fip->recv_ring_take_ptr = &fip->recv_buffer [0]; X X intr_disable (); X fip->recv_ring_cnt -= num_save; X intr_restore (); X X ttyp->t_rbuf.c_ptr -= ttyp->t_rbuf.c_size X - ttyp->t_rbuf.c_count; X (*linesw [ttyp->t_line].l_input) (ttyp, L_BUF); X } X} X X/* UNIX buffer -> transmitter ring buffer transfer function. */ Xstatic void Xfas_xxfer (fip) Xregister struct fas_info *fip; X{ X register struct tty *ttyp; X register int num_to_xfer; SHAR_EOF true || echo 'restore of fasi/fas.c failed' fi echo 'End of ecu310 part 30' echo 'File fasi/fas.c is continued in part 31' echo 31 > _shar_seq_.tmp exit 0 -------------------------------------------------------------------- Warren Tucker, TuckerWare emory!n4hgf!wht or wht@n4hgf.Mt-Park.GA.US Hacker Extraordinaire d' async PADs, pods, proteins and protocols exit 0 # Just in case... -- Kent Landfield INTERNET: kent@sparky.IMD.Sterling.COM Sterling Software, IMD UUCP: uunet!sparky!kent Phone: (402) 291-8300 FAX: (402) 291-4362 Please send comp.sources.misc-related mail to kent@uunet.uu.net.