/* * Device driver for Specialix range (SI/XIO) of serial line multiplexors. * * Copyright (C) 1990, 1992, 1998 Specialix International, * Copyright (C) 1993, Andy Rutter * Copyright (C) 2000, Peter Wemm * * Originally derived from: SunOS 4.x version * Ported from BSDI version to FreeBSD by Peter Wemm. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notices, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notices, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Andy Rutter of * Advanced Methods and Tools Ltd. based on original information * from Specialix International. * 4. Neither the name of Advanced Methods and Tools, nor Specialix * International may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHORS BE LIABLE. * */ #include __FBSDID("$FreeBSD$"); #ifndef lint static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998", si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993", si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000"; #endif /* not lint */ #include "opt_compat.h" #include "opt_debug_si.h" #include "opt_tty.h" #include #include #ifndef BURN_BRIDGES #if defined(COMPAT_43) #include #endif #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * This device driver is designed to interface the Specialix International * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA, * EISA or PCI bus machine. * * The controller is interfaced to the host via dual port RAM * and an interrupt. * * The code for the Host 1 (very old ISA cards) has not been tested. */ #define POLL /* turn on poller to scan for lost interrupts */ #define REALPOLL /* on each poll, scan for work regardless */ #define POLLHZ (hz/10) /* 10 times per second */ #define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) #define INT_COUNT 25000 /* max of 125 ints per second */ #define JET_INT_COUNT 100 /* max of 100 ints per second */ #define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ enum si_mctl { GET, SET, BIS, BIC }; static void si_command(struct si_port *, int, int); static int si_modem(struct si_port *, enum si_mctl, int); static void si_write_enable(struct si_port *, int); static int si_Sioctl(struct cdev *, u_long, caddr_t, int, struct thread *); static void si_start(struct tty *); static void si_stop(struct tty *, int); static timeout_t si_lstart; static void sihardclose(struct si_port *pp); #ifdef SI_DEBUG static char *si_mctl2str(enum si_mctl cmd); #endif static int siparam(struct tty *, struct termios *); static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip); static char * si_modulename(int host_type, int uart_type); static d_open_t siopen; static d_close_t siclose; static d_write_t siwrite; static d_ioctl_t siioctl; static struct cdevsw si_cdevsw = { .d_version = D_VERSION, .d_open = siopen, .d_close = siclose, .d_write = siwrite, .d_ioctl = siioctl, .d_name = "si", .d_flags = D_TTY | D_NEEDGIANT, }; static int si_Nports; static int si_Nmodules; static int si_debug = 0; /* data, not bss, so it's patchable */ SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); TUNABLE_INT("machdep.si_debug", &si_debug); static int si_numunits; devclass_t si_devclass; #ifndef B2000 /* not standard, but the hardware knows it. */ # define B2000 2000 #endif static struct speedtab bdrates[] = { { B75, CLK75, }, /* 0x0 */ { B110, CLK110, }, /* 0x1 */ { B150, CLK150, }, /* 0x3 */ { B300, CLK300, }, /* 0x4 */ { B600, CLK600, }, /* 0x5 */ { B1200, CLK1200, }, /* 0x6 */ { B2000, CLK2000, }, /* 0x7 */ { B2400, CLK2400, }, /* 0x8 */ { B4800, CLK4800, }, /* 0x9 */ { B9600, CLK9600, }, /* 0xb */ { B19200, CLK19200, }, /* 0xc */ { B38400, CLK38400, }, /* 0x2 (out of order!) */ { B57600, CLK57600, }, /* 0xd */ { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ { -1, -1 }, }; /* populated with approx character/sec rates - translated at card * initialisation time to chars per tick of the clock */ static int done_chartimes = 0; static struct speedtab chartimes[] = { { B75, 8, }, { B110, 11, }, { B150, 15, }, { B300, 30, }, { B600, 60, }, { B1200, 120, }, { B2000, 200, }, { B2400, 240, }, { B4800, 480, }, { B9600, 960, }, { B19200, 1920, }, { B38400, 3840, }, { B57600, 5760, }, { B115200, 11520, }, { -1, -1 }, }; static volatile int in_intr = 0; /* Inside interrupt handler? */ #ifdef POLL static int si_pollrate; /* in addition to irq */ static int si_realpoll = 0; /* poll HW on timer */ SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); static int init_finished = 0; static void si_poll(void *); #endif /* * Array of adapter types and the corresponding RAM size. The order of * entries here MUST match the ordinal of the adapter type. */ static char *si_type[] = { "EMPTY", "SIHOST", "SIMCA", /* FreeBSD does not support Microchannel */ "SIHOST2", "SIEISA", "SIPCI", "SXPCI", "SXISA", }; /* * We have to make an 8 bit version of bcopy, since some cards can't * deal with 32 bit I/O */ static void __inline si_bcopy(const void *src, void *dst, size_t len) { u_char *d; const u_char *s; d = dst; s = src; while (len--) *d++ = *s++; } static void __inline si_vbcopy(const volatile void *src, void *dst, size_t len) { u_char *d; const volatile u_char *s; d = dst; s = src; while (len--) *d++ = *s++; } static void __inline si_bcopyv(const void *src, volatile void *dst, size_t len) { volatile u_char *d; const u_char *s; d = dst; s = src; while (len--) *d++ = *s++; } /* * Attach the device. Initialize the card. */ int siattach(device_t dev) { int unit; struct si_softc *sc; struct si_port *pp; volatile struct si_channel *ccbp; volatile struct si_reg *regp; volatile caddr_t maddr; struct si_module *modp; struct speedtab *spt; int nmodule, nport, x, y; int uart_type; sc = device_get_softc(dev); unit = device_get_unit(dev); sc->sc_typename = si_type[sc->sc_type]; if (si_numunits < unit + 1) si_numunits = unit + 1; DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); #ifdef POLL if (si_pollrate == 0) { si_pollrate = POLLHZ; /* in addition to irq */ #ifdef REALPOLL si_realpoll = 1; /* scan always */ #endif } #endif DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); sc->sc_ports = NULL; /* mark as uninitialised */ maddr = sc->sc_maddr; /* Stop the CPU first so it won't stomp around while we load */ switch (sc->sc_type) { case SIEISA: outb(sc->sc_iobase + 2, sc->sc_irq << 4); break; case SIPCI: *(maddr+SIPCIRESET) = 0; break; case SIJETPCI: /* fall through to JET ISA */ case SIJETISA: *(maddr+SIJETCONFIG) = 0; break; case SIHOST2: *(maddr+SIPLRESET) = 0; break; case SIHOST: *(maddr+SIRESET) = 0; break; default: /* this should never happen */ printf("si%d: unsupported configuration\n", unit); return EINVAL; break; } /* OK, now lets download the download code */ if (SI_ISJET(sc->sc_type)) { DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", unit, si3_t225_dsize)); si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, si3_t225_dsize); DPRINT((0, DBG_DOWNLOAD, "si%d: jet_bootstrap: nbytes %d -> %x\n", unit, si3_t225_bsize, si3_t225_bootloadaddr)); si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, si3_t225_bsize); } else { DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", unit, si2_z280_dsize)); si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, si2_z280_dsize); } /* Now start the CPU */ switch (sc->sc_type) { case SIEISA: /* modify the download code to tell it that it's on an EISA */ *(maddr + 0x42) = 1; outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); (void)inb(sc->sc_iobase + 3); /* reset interrupt */ break; case SIPCI: /* modify the download code to tell it that it's on a PCI */ *(maddr+0x42) = 1; *(maddr+SIPCIRESET) = 1; *(maddr+SIPCIINTCL) = 0; break; case SIJETPCI: *(maddr+SIJETRESET) = 0; *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; break; case SIJETISA: *(maddr+SIJETRESET) = 0; switch (sc->sc_irq) { case 9: *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; break; case 10: *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; break; case 11: *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; break; case 12: *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; break; case 15: *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; break; } break; case SIHOST: *(maddr+SIRESET_CL) = 0; *(maddr+SIINTCL_CL) = 0; break; case SIHOST2: *(maddr+SIPLRESET) = 0x10; switch (sc->sc_irq) { case 11: *(maddr+SIPLIRQ11) = 0x10; break; case 12: *(maddr+SIPLIRQ12) = 0x10; break; case 15: *(maddr+SIPLIRQ15) = 0x10; break; } *(maddr+SIPLIRQCLR) = 0x10; break; default: /* this should _REALLY_ never happen */ printf("si%d: Uh, it was supported a second ago...\n", unit); return EINVAL; } DELAY(1000000); /* wait around for a second */ regp = (struct si_reg *)maddr; y = 0; /* wait max of 5 sec for init OK */ while (regp->initstat == 0 && y++ < 10) { DELAY(500000); } switch (regp->initstat) { case 0: printf("si%d: startup timeout - aborting\n", unit); sc->sc_type = SIEMPTY; return EINVAL; case 1: if (SI_ISJET(sc->sc_type)) { /* set throttle to 100 times per second */ regp->int_count = JET_INT_COUNT; /* rx_intr_count is a NOP in Jet */ } else { /* set throttle to 125 times per second */ regp->int_count = INT_COUNT; /* rx intr max of 25 times per second */ regp->rx_int_count = RXINT_COUNT; } regp->int_pending = 0; /* no intr pending */ regp->int_scounter = 0; /* reset counter */ break; case 0xff: /* * No modules found, so give up on this one. */ printf("si%d: %s - no ports found\n", unit, si_type[sc->sc_type]); return 0; default: printf("si%d: download code version error - initstat %x\n", unit, regp->initstat); return EINVAL; } /* * First time around the ports just count them in order * to allocate some memory. */ nport = 0; modp = (struct si_module *)(maddr + 0x80); for (;;) { DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); switch (modp->sm_type) { case TA4: DPRINT((0, DBG_DOWNLOAD, "si%d: Found old TA4 module, 4 ports\n", unit)); x = 4; break; case TA8: DPRINT((0, DBG_DOWNLOAD, "si%d: Found old TA8 module, 8 ports\n", unit)); x = 8; break; case TA4_ASIC: DPRINT((0, DBG_DOWNLOAD, "si%d: Found ASIC TA4 module, 4 ports\n", unit)); x = 4; break; case TA8_ASIC: DPRINT((0, DBG_DOWNLOAD, "si%d: Found ASIC TA8 module, 8 ports\n", unit)); x = 8; break; case MTA: DPRINT((0, DBG_DOWNLOAD, "si%d: Found CD1400 module, 8 ports\n", unit)); x = 8; break; case SXDC: DPRINT((0, DBG_DOWNLOAD, "si%d: Found SXDC module, 8 ports\n", unit)); x = 8; break; default: printf("si%d: unknown module type %d\n", unit, modp->sm_type); goto try_next; } /* this was limited in firmware and is also a driver issue */ if ((nport + x) > SI_MAXPORTPERCARD) { printf("si%d: extra ports ignored\n", unit); goto try_next; } nport += x; si_Nports += x; si_Nmodules++; try_next: if (modp->sm_next == 0) break; modp = (struct si_module *) (maddr + (unsigned)(modp->sm_next & 0x7fff)); } sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, M_DEVBUF, M_NOWAIT | M_ZERO); if (sc->sc_ports == 0) { printf("si%d: fail to malloc memory for port structs\n", unit); return EINVAL; } sc->sc_nport = nport; /* * Scan round the ports again, this time initialising. */ pp = sc->sc_ports; nmodule = 0; modp = (struct si_module *)(maddr + 0x80); uart_type = 1000; /* arbitary, > uchar_max */ for (;;) { switch (modp->sm_type) { case TA4: nport = 4; break; case TA8: nport = 8; break; case TA4_ASIC: nport = 4; break; case TA8_ASIC: nport = 8; break; case MTA: nport = 8; break; case SXDC: nport = 8; break; default: goto try_next2; } nmodule++; ccbp = (struct si_channel *)((char *)modp + 0x100); if (uart_type == 1000) uart_type = ccbp->type; else if (uart_type != ccbp->type) printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", unit, nmodule, ccbp->type, si_modulename(sc->sc_type, ccbp->type), uart_type, si_modulename(sc->sc_type, uart_type)); for (x = 0; x < nport; x++, pp++, ccbp++) { pp->sp_ccb = ccbp; /* save the address */ pp->sp_tty = ttyalloc(); pp->sp_pend = IDLE_CLOSE; pp->sp_state = 0; /* internal flag */ pp->sp_iin.c_iflag = TTYDEF_IFLAG; pp->sp_iin.c_oflag = TTYDEF_OFLAG; pp->sp_iin.c_cflag = TTYDEF_CFLAG; pp->sp_iin.c_lflag = TTYDEF_LFLAG; termioschars(&pp->sp_iin); pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed = TTYDEF_SPEED;; pp->sp_iout = pp->sp_iin; } try_next2: if (modp->sm_next == 0) { printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", unit, sc->sc_typename, sc->sc_nport, nmodule, uart_type, si_modulename(sc->sc_type, uart_type)); break; } modp = (struct si_module *) (maddr + (unsigned)(modp->sm_next & 0x7fff)); } if (done_chartimes == 0) { for (spt = chartimes ; spt->sp_speed != -1; spt++) { if ((spt->sp_code /= hz) == 0) spt->sp_code = 1; } done_chartimes = 1; } /* path name devsw minor type uid gid perm*/ for (x = 0; x < sc->sc_nport; x++) { /* sync with the manuals that start at 1 */ y = x + 1 + unit * (1 << SI_CARDSHIFT); make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y); make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y); make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y); make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y); make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y); make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y); } make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control"); return (0); } static int siopen(struct cdev *dev, int flag, int mode, struct thread *td) { int oldspl, error; int card, port; struct si_softc *sc; struct tty *tp; volatile struct si_channel *ccbp; struct si_port *pp; int mynor = minor(dev); /* quickly let in /dev/si_control */ if (IS_CONTROLDEV(mynor)) { if ((error = suser(td))) return(error); return(0); } card = SI_CARD(mynor); sc = devclass_get_softc(si_devclass, card); if (sc == NULL) return (ENXIO); if (sc->sc_type == SIEMPTY) { DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n", card, sc->sc_typename)); return(ENXIO); } port = SI_PORT(mynor); if (port >= sc->sc_nport) { DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n", card, sc->sc_nport)); return(ENXIO); } #ifdef POLL /* * We've now got a device, so start the poller. */ if (init_finished == 0) { timeout(si_poll, (caddr_t)0L, si_pollrate); init_finished = 1; } #endif /* initial/lock device */ if (IS_STATE(mynor)) { return(0); } pp = sc->sc_ports + port; tp = pp->sp_tty; /* the "real" tty */ dev->si_tty = tp; ccbp = pp->sp_ccb; /* Find control block */ DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n", devtoname(dev), flag, mode, td)); oldspl = spltty(); /* Keep others out */ error = 0; open_top: error = ttydtrwaitsleep(tp); if (error != 0) goto out; if (tp->t_state & TS_ISOPEN) { /* * The device is open, so everything has been initialised. * handle conflicts. */ if (IS_CALLOUT(mynor)) { if (!pp->sp_active_out) { error = EBUSY; goto out; } } else { if (pp->sp_active_out) { if (flag & O_NONBLOCK) { error = EBUSY; goto out; } error = tsleep(&pp->sp_active_out, TTIPRI|PCATCH, "sibi", 0); if (error != 0) goto out; goto open_top; } } if (tp->t_state & TS_XCLUDE && suser(td)) { DPRINT((pp, DBG_OPEN|DBG_FAIL, "already open and EXCLUSIVE set\n")); error = EBUSY; goto out; } } else { /* * The device isn't open, so there are no conflicts. * Initialize it. Avoid sleep... :-) */ DPRINT((pp, DBG_OPEN, "first open\n")); tp->t_oproc = si_start; tp->t_stop = si_stop; tp->t_param = siparam; tp->t_dev = dev; tp->t_termios = mynor & SI_CALLOUT_MASK ? pp->sp_iout : pp->sp_iin; (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); ++pp->sp_wopeners; /* in case of sleep in siparam */ error = siparam(tp, &tp->t_termios); --pp->sp_wopeners; if (error != 0) goto out; /* XXX: we should goto_top if siparam slept */ /* set initial DCD state */ pp->sp_last_hi_ip = ccbp->hi_ip; if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) { ttyld_modem(tp, 1); } } /* whoops! we beat the close! */ if (pp->sp_state & SS_CLOSING) { /* try and stop it from proceeding to bash the hardware */ pp->sp_state &= ~SS_CLOSING; } /* * Wait for DCD if necessary */ if (!(tp->t_state & TS_CARR_ON) && !IS_CALLOUT(mynor) && !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) { ++pp->sp_wopeners; DPRINT((pp, DBG_OPEN, "sleeping for carrier\n")); error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0); --pp->sp_wopeners; if (error != 0) goto out; goto open_top; } error = ttyld_open(tp, dev); ttyldoptim(tp); if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor)) pp->sp_active_out = TRUE; pp->sp_state |= SS_OPEN; /* made it! */ out: splx(oldspl); DPRINT((pp, DBG_OPEN, "leaving siopen\n")); if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0) sihardclose(pp); return(error); } static int siclose(struct cdev *dev, int flag, int mode, struct thread *td) { struct si_port *pp; struct tty *tp; int oldspl; int error = 0; int mynor = minor(dev); if (IS_SPECIAL(mynor)) return(0); oldspl = spltty(); pp = MINOR2PP(mynor); tp = pp->sp_tty; DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n", devtoname(dev), flag, mode, td, pp->sp_state)); /* did we sleep and loose a race? */ if (pp->sp_state & SS_CLOSING) { /* error = ESOMETING? */ goto out; } /* begin race detection.. */ pp->sp_state |= SS_CLOSING; si_write_enable(pp, 0); /* block writes for ttywait() */ /* THIS MAY SLEEP IN TTYWAIT!!! */ ttyld_close(tp, flag); si_write_enable(pp, 1); /* did we sleep and somebody started another open? */ if (!(pp->sp_state & SS_CLOSING)) { /* error = ESOMETING? */ goto out; } /* ok. we are now still on the right track.. nuke the hardware */ if (pp->sp_state & SS_LSTART) { untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); pp->sp_state &= ~SS_LSTART; } sihardclose(pp); tty_close(tp); pp->sp_state &= ~SS_OPEN; out: DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); splx(oldspl); return(error); } static void sihardclose(struct si_port *pp) { int oldspl; struct tty *tp; volatile struct si_channel *ccbp; oldspl = spltty(); tp = pp->sp_tty; ccbp = pp->sp_ccb; /* Find control block */ if (tp->t_cflag & HUPCL || (!pp->sp_active_out && !(ccbp->hi_ip & IP_DCD) && !(pp->sp_iin.c_cflag && CLOCAL)) || !(tp->t_state & TS_ISOPEN)) { (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); (void) si_command(pp, FCLOSE, SI_NOWAIT); ttydtrwaitstart(tp); } pp->sp_active_out = FALSE; wakeup(&pp->sp_active_out); wakeup(TSA_CARR_ON(tp)); splx(oldspl); } static int siwrite(struct cdev *dev, struct uio *uio, int flag) { struct si_port *pp; struct tty *tp; int error = 0; int mynor = minor(dev); int oldspl; if (IS_SPECIAL(mynor)) { DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); return(ENODEV); } pp = MINOR2PP(mynor); tp = pp->sp_tty; DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); oldspl = spltty(); /* * If writes are currently blocked, wait on the "real" tty */ while (pp->sp_state & SS_BLOCKWRITE) { pp->sp_state |= SS_WAITWRITE; DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, "siwrite", tp->t_timeout))) { if (error == EWOULDBLOCK) error = EIO; goto out; } } error = ttyld_write(tp, uio, flag); out: splx(oldspl); return (error); } static int siioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) { struct si_port *pp; struct tty *tp; int error; int mynor = minor(dev); int oldspl; int blocked = 0; #ifndef BURN_BRIDGES #if defined(COMPAT_43) u_long oldcmd; struct termios term; #endif #endif if (IS_SI_IOCTL(cmd)) return(si_Sioctl(dev, cmd, data, flag, td)); pp = MINOR2PP(mynor); tp = pp->sp_tty; DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", devtoname(dev), cmd, data, flag)); if (IS_STATE(mynor)) { struct termios *ct; switch (mynor & SI_STATE_MASK) { case SI_INIT_STATE_MASK: ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; break; case SI_LOCK_STATE_MASK: ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; break; default: return (ENODEV); } switch (cmd) { case TIOCSETA: error = suser(td); if (error != 0) return (error); *ct = *(struct termios *)data; return (0); case TIOCGETA: *(struct termios *)data = *ct; return (0); case TIOCGETD: *(int *)data = TTYDISC; return (0); case TIOCGWINSZ: bzero(data, sizeof(struct winsize)); return (0); default: return (ENOTTY); } } /* * Do the old-style ioctl compat routines... */ #ifndef BURN_BRIDGES #if defined(COMPAT_43) term = tp->t_termios; oldcmd = cmd; error = ttsetcompat(tp, &cmd, data, &term); if (error != 0) return (error); if (cmd != oldcmd) data = (caddr_t)&term; #endif #endif /* * Do the initial / lock state business */ if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { int cc; struct termios *dt = (struct termios *)data; struct termios *lt = mynor & SI_CALLOUT_MASK ? &pp->sp_lout : &pp->sp_lin; dt->c_iflag = (tp->t_iflag & lt->c_iflag) | (dt->c_iflag & ~lt->c_iflag); dt->c_oflag = (tp->t_oflag & lt->c_oflag) | (dt->c_oflag & ~lt->c_oflag); dt->c_cflag = (tp->t_cflag & lt->c_cflag) | (dt->c_cflag & ~lt->c_cflag); dt->c_lflag = (tp->t_lflag & lt->c_lflag) | (dt->c_lflag & ~lt->c_lflag); for (cc = 0; cc < NCCS; ++cc) if (lt->c_cc[cc] != 0) dt->c_cc[cc] = tp->t_cc[cc]; if (lt->c_ispeed != 0) dt->c_ispeed = tp->t_ispeed; if (lt->c_ospeed != 0) dt->c_ospeed = tp->t_ospeed; } /* * Block user-level writes to give the ttywait() * a chance to completely drain for commands * that require the port to be in a quiescent state. */ switch (cmd) { case TIOCSETAW: case TIOCSETAF: case TIOCDRAIN: #ifndef BURN_BRIDGES #ifdef COMPAT_43 case TIOCSETP: #endif #endif blocked++; /* block writes for ttywait() and siparam() */ si_write_enable(pp, 0); } error = ttyioctl(dev, cmd, data, flag, td); ttyldoptim(tp); if (error != ENOTTY) goto out; oldspl = spltty(); error = 0; switch (cmd) { case TIOCSBRK: si_command(pp, SBREAK, SI_WAIT); break; case TIOCCBRK: si_command(pp, EBREAK, SI_WAIT); break; case TIOCSDTR: (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); break; case TIOCCDTR: (void) si_modem(pp, SET, 0); break; case TIOCMSET: (void) si_modem(pp, SET, *(int *)data); break; case TIOCMBIS: (void) si_modem(pp, BIS, *(int *)data); break; case TIOCMBIC: (void) si_modem(pp, BIC, *(int *)data); break; case TIOCMGET: *(int *)data = si_modem(pp, GET, 0); break; default: error = ENOTTY; } splx(oldspl); out: DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); if (blocked) si_write_enable(pp, 1); return(error); } /* * Handle the Specialix ioctls. All MUST be called via the CONTROL device */ static int si_Sioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td) { struct si_softc *xsc; struct si_port *xpp; volatile struct si_reg *regp; struct si_tcsi *dp; struct si_pstat *sps; int *ip, error = 0; int oldspl; int card, port; int mynor = minor(dev); DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", devtoname(dev), cmd, data, flag)); #if 1 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); #endif if (!IS_CONTROLDEV(mynor)) { DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); return(ENODEV); } oldspl = spltty(); /* better safe than sorry */ ip = (int *)data; #define SUCHECK if ((error = suser(td))) goto out switch (cmd) { case TCSIPORTS: *ip = si_Nports; goto out; case TCSIMODULES: *ip = si_Nmodules; goto out; case TCSISDBG_ALL: SUCHECK; si_debug = *ip; goto out; case TCSIGDBG_ALL: *ip = si_debug; goto out; default: /* * Check that a controller for this port exists */ /* may also be a struct si_pstat, a superset of si_tcsi */ dp = (struct si_tcsi *)data; sps = (struct si_pstat *)data; card = dp->tc_card; xsc = devclass_get_softc(si_devclass, card); /* check.. */ if (xsc == NULL || xsc->sc_type == SIEMPTY) { error = ENOENT; goto out; } /* * And check that a port exists */ port = dp->tc_port; if (port < 0 || port >= xsc->sc_nport) { error = ENOENT; goto out; } xpp = xsc->sc_ports + port; regp = (struct si_reg *)xsc->sc_maddr; } switch (cmd) { case TCSIDEBUG: #ifdef SI_DEBUG SUCHECK; if (xpp->sp_debug) xpp->sp_debug = 0; else { xpp->sp_debug = DBG_ALL; DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); } break; #else error = ENODEV; goto out; #endif case TCSISDBG_LEVEL: case TCSIGDBG_LEVEL: #ifdef SI_DEBUG if (cmd == TCSIGDBG_LEVEL) { dp->tc_dbglvl = xpp->sp_debug; } else { SUCHECK; xpp->sp_debug = dp->tc_dbglvl; } break; #else error = ENODEV; goto out; #endif case TCSIGRXIT: dp->tc_int = regp->rx_int_count; break; case TCSIRXIT: SUCHECK; regp->rx_int_count = dp->tc_int; break; case TCSIGIT: dp->tc_int = regp->int_count; break; case TCSIIT: SUCHECK; regp->int_count = dp->tc_int; break; case TCSISTATE: dp->tc_int = xpp->sp_ccb->hi_ip; break; /* these next three use a different structure */ case TCSI_PORT: SUCHECK; si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); break; case TCSI_CCB: SUCHECK; si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); break; case TCSI_TTY: SUCHECK; si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); break; default: error = EINVAL; goto out; } out: splx(oldspl); return(error); /* success */ } /* * siparam() : Configure line params * called at spltty(); * this may sleep, does not flush, nor wait for drain, nor block writes * caller must arrange this if it's important.. */ static int siparam(struct tty *tp, struct termios *t) { struct si_port *pp = TP2PP(tp); volatile struct si_channel *ccbp; int oldspl, cflag, iflag, oflag, lflag; int error = 0; /* shutup gcc */ int ispeed = 0; /* shutup gcc */ int ospeed = 0; /* shutup gcc */ BYTE val; DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); cflag = t->c_cflag; iflag = t->c_iflag; oflag = t->c_oflag; lflag = t->c_lflag; DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", oflag, cflag, iflag, lflag)); /* XXX - if Jet host and SXDC module, use extended baud rates */ /* if not hung up.. */ if (t->c_ospeed != 0) { /* translate baud rate to firmware values */ ospeed = ttspeedtab(t->c_ospeed, bdrates); ispeed = t->c_ispeed ? ttspeedtab(t->c_ispeed, bdrates) : ospeed; /* enforce legit baud rate */ if (ospeed < 0 || ispeed < 0) return (EINVAL); } oldspl = spltty(); ccbp = pp->sp_ccb; /* ========== set hi_break ========== */ val = 0; if (iflag & IGNBRK) /* Breaks */ val |= BR_IGN; if (iflag & BRKINT) /* Interrupt on break? */ val |= BR_INT; if (iflag & PARMRK) /* Parity mark? */ val |= BR_PARMRK; if (iflag & IGNPAR) /* Ignore chars with parity errors? */ val |= BR_PARIGN; ccbp->hi_break = val; /* ========== set hi_csr ========== */ /* if not hung up.. */ if (t->c_ospeed != 0) { /* Set I/O speeds */ val = (ispeed << 4) | ospeed; } ccbp->hi_csr = val; /* ========== set hi_mr2 ========== */ val = 0; if (cflag & CSTOPB) /* Stop bits */ val |= MR2_2_STOP; else val |= MR2_1_STOP; /* * Enable H/W RTS/CTS handshaking. The default TA/MTA is * a DCE, hence the reverse sense of RTS and CTS */ /* Output Flow - RTS must be raised before data can be sent */ if (cflag & CCTS_OFLOW) val |= MR2_RTSCONT; ccbp->hi_mr2 = val; /* ========== set hi_mr1 ========== */ val = 0; if (!(cflag & PARENB)) /* Parity */ val |= MR1_NONE; else val |= MR1_WITH; if (cflag & PARODD) val |= MR1_ODD; if ((cflag & CS8) == CS8) { /* 8 data bits? */ val |= MR1_8_BITS; } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ val |= MR1_7_BITS; } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ val |= MR1_6_BITS; } else { /* Must be 5 */ val |= MR1_5_BITS; } /* * Enable H/W RTS/CTS handshaking. The default TA/MTA is * a DCE, hence the reverse sense of RTS and CTS */ /* Input Flow - CTS is raised when port is ready to receive data */ if (cflag & CRTS_IFLOW) val |= MR1_CTSCONT; ccbp->hi_mr1 = val; /* ========== set hi_mask ========== */ val = 0xff; if ((cflag & CS8) == CS8) { /* 8 data bits? */ val &= 0xFF; } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ val &= 0x7F; } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ val &= 0x3F; } else { /* Must be 5 */ val &= 0x1F; } if (iflag & ISTRIP) val &= 0x7F; ccbp->hi_mask = val; /* ========== set hi_prtcl ========== */ val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ if (iflag & IXANY) val |= SP_TANY; if (iflag & IXON) val |= SP_TXEN; if (iflag & IXOFF) val |= SP_RXEN; if (iflag & INPCK) val |= SP_PAEN; ccbp->hi_prtcl = val; /* ========== set hi_{rx|tx}{on|off} ========== */ /* XXX: the card TOTALLY shields us from the flow control... */ ccbp->hi_txon = t->c_cc[VSTART]; ccbp->hi_txoff = t->c_cc[VSTOP]; ccbp->hi_rxon = t->c_cc[VSTART]; ccbp->hi_rxoff = t->c_cc[VSTOP]; /* ========== send settings to the card ========== */ /* potential sleep here */ if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ si_command(pp, LOPEN, SI_WAIT); /* open it */ else si_command(pp, CONFIG, SI_WAIT); /* change params */ /* ========== set DTR etc ========== */ /* Hangup if ospeed == 0 */ if (t->c_ospeed == 0) { (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); } else { /* * If the previous speed was 0, may need to re-enable * the modem signals */ (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); } DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); splx(oldspl); return(error); } /* * Enable or Disable the writes to this channel... * "state" -> enabled = 1; disabled = 0; */ static void si_write_enable(struct si_port *pp, int state) { int oldspl; oldspl = spltty(); if (state) { pp->sp_state &= ~SS_BLOCKWRITE; if (pp->sp_state & SS_WAITWRITE) { pp->sp_state &= ~SS_WAITWRITE; /* thunder away! */ wakeup(pp); } } else { pp->sp_state |= SS_BLOCKWRITE; } splx(oldspl); } /* * Set/Get state of modem control lines. * Due to DCE-like behaviour of the adapter, some signals need translation: * TIOCM_DTR DSR * TIOCM_RTS CTS */ static int si_modem(struct si_port *pp, enum si_mctl cmd, int bits) { volatile struct si_channel *ccbp; int x; DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); ccbp = pp->sp_ccb; /* Find channel address */ switch (cmd) { case GET: x = ccbp->hi_ip; bits = TIOCM_LE; if (x & IP_DCD) bits |= TIOCM_CAR; if (x & IP_DTR) bits |= TIOCM_DTR; if (x & IP_RTS) bits |= TIOCM_RTS; if (x & IP_RI) bits |= TIOCM_RI; return(bits); case SET: ccbp->hi_op &= ~(OP_DSR|OP_CTS); /* fall through */ case BIS: x = 0; if (bits & TIOCM_DTR) x |= OP_DSR; if (bits & TIOCM_RTS) x |= OP_CTS; ccbp->hi_op |= x; break; case BIC: if (bits & TIOCM_DTR) ccbp->hi_op &= ~OP_DSR; if (bits & TIOCM_RTS) ccbp->hi_op &= ~OP_CTS; } return 0; } /* * Handle change of modem state */ static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) { /* if a modem dev */ if (hi_ip & IP_DCD) { if (!(pp->sp_last_hi_ip & IP_DCD)) { DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", tp->t_line)); (void)ttyld_modem(tp, 1); } } else { if (pp->sp_last_hi_ip & IP_DCD) { DPRINT((pp, DBG_INTR, "modem carr off\n")); if (ttyld_modem(tp, 0)) (void) si_modem(pp, SET, 0); } } pp->sp_last_hi_ip = hi_ip; } /* * Poller to catch missed interrupts. * * Note that the SYSV Specialix drivers poll at 100 times per second to get * better response. We could really use a "periodic" version timeout(). :-) */ #ifdef POLL static void si_poll(void *nothing) { struct si_softc *sc; int i; volatile struct si_reg *regp; struct si_port *pp; int lost, oldspl, port; DPRINT((0, DBG_POLL, "si_poll()\n")); oldspl = spltty(); if (in_intr) goto out; lost = 0; for (i = 0; i < si_numunits; i++) { sc = devclass_get_softc(si_devclass, i); if (sc == NULL || sc->sc_type == SIEMPTY) continue; regp = (struct si_reg *)sc->sc_maddr; /* * See if there has been a pending interrupt for 2 seconds * or so. The test (int_scounter >= 200) won't correspond * to 2 seconds if int_count gets changed. */ if (regp->int_pending != 0) { if (regp->int_scounter >= 200 && regp->initstat == 1) { printf("si%d: lost intr\n", i); lost++; } } else { regp->int_scounter = 0; } /* * gripe about no input flow control.. */ pp = sc->sc_ports; for (port = 0; port < sc->sc_nport; pp++, port++) { if (pp->sp_delta_overflows > 0) { printf("si%d: %d tty level buffer overflows\n", i, pp->sp_delta_overflows); pp->sp_delta_overflows = 0; } } } if (lost || si_realpoll) si_intr(NULL); /* call intr with fake vector */ out: splx(oldspl); timeout(si_poll, (caddr_t)0L, si_pollrate); } #endif /* ifdef POLL */ /* * The interrupt handler polls ALL ports on ALL adapters each time * it is called. */ static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ void si_intr(void *arg) { struct si_softc *sc; struct si_port *pp; volatile struct si_channel *ccbp; struct tty *tp; volatile caddr_t maddr; BYTE op, ip; int x, card, port, n, i, isopen; volatile BYTE *z; BYTE c; sc = arg; DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); if (in_intr) return; in_intr = 1; /* * When we get an int we poll all the channels and do ALL pending * work, not just the first one we find. This allows all cards to * share the same vector. * * XXX - But if we're sharing the vector with something that's NOT * a SI/XIO/SX card, we may be making more work for ourselves. */ for (card = 0; card < si_numunits; card++) { sc = devclass_get_softc(si_devclass, card); if (sc == NULL || sc->sc_type == SIEMPTY) continue; /* * First, clear the interrupt */ switch(sc->sc_type) { case SIHOST: maddr = sc->sc_maddr; ((volatile struct si_reg *)maddr)->int_pending = 0; /* flag nothing pending */ *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ break; case SIHOST2: maddr = sc->sc_maddr; ((volatile struct si_reg *)maddr)->int_pending = 0; *(maddr+SIPLIRQCLR) = 0x00; *(maddr+SIPLIRQCLR) = 0x10; break; case SIPCI: maddr = sc->sc_maddr; ((volatile struct si_reg *)maddr)->int_pending = 0; *(maddr+SIPCIINTCL) = 0x0; break; case SIJETPCI: /* fall through to JETISA case */ case SIJETISA: maddr = sc->sc_maddr; ((volatile struct si_reg *)maddr)->int_pending = 0; *(maddr+SIJETINTCL) = 0x0; break; case SIEISA: maddr = sc->sc_maddr; ((volatile struct si_reg *)maddr)->int_pending = 0; (void)inb(sc->sc_iobase + 3); break; case SIEMPTY: default: continue; } ((volatile struct si_reg *)maddr)->int_scounter = 0; /* * check each port */ for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; pp++, port++) { ccbp = pp->sp_ccb; tp = pp->sp_tty; /* * See if a command has completed ? */ if (ccbp->hi_stat != pp->sp_pend) { DPRINT((pp, DBG_INTR, "si_intr hi_stat = 0x%x, pend = %d\n", ccbp->hi_stat, pp->sp_pend)); switch(pp->sp_pend) { case LOPEN: case MPEND: case MOPEN: case CONFIG: case SBREAK: case EBREAK: pp->sp_pend = ccbp->hi_stat; /* sleeping in si_command */ wakeup(&pp->sp_state); break; default: pp->sp_pend = ccbp->hi_stat; } } /* * Continue on if it's closed */ if (ccbp->hi_stat == IDLE_CLOSE) { continue; } /* * Do modem state change if not a local device */ si_modem_state(pp, tp, ccbp->hi_ip); /* * Check to see if we should 'receive' characters. */ if (tp->t_state & TS_CONNECTED && tp->t_state & TS_ISOPEN) isopen = 1; else isopen = 0; /* * Do input break processing */ if (ccbp->hi_state & ST_BREAK) { if (isopen) { ttyld_rint(tp, TTY_BI); } ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ DPRINT((pp, DBG_INTR, "si_intr break\n")); } /* * Do RX stuff - if not open then dump any characters. * XXX: This is VERY messy and needs to be cleaned up. * * XXX: can we leave data in the host adapter buffer * when the clists are full? That may be dangerous * if the user cannot get an interrupt signal through. */ more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ if (!isopen) { ccbp->hi_rxopos = ccbp->hi_rxipos; goto end_rx; } /* * If the tty input buffers are blocked, stop emptying * the incoming buffers and let the auto flow control * assert.. */ if (tp->t_state & TS_TBLOCK) { goto end_rx; } /* * Process read characters if not skipped above */ op = ccbp->hi_rxopos; ip = ccbp->hi_rxipos; c = ip - op; if (c == 0) { goto end_rx; } n = c & 0xff; if (n > 250) n = 250; DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", n, op, ip)); /* * Suck characters out of host card buffer into the * "input staging buffer" - so that we dont leave the * host card in limbo while we're possibly echoing * characters and possibly flushing input inside the * ldisc l_rint() routine. */ if (n <= SI_BUFFERSIZE - op) { DPRINT((pp, DBG_INTR, "\tsingle copy\n")); z = ccbp->hi_rxbuf + op; si_vbcopy(z, si_rxbuf, n); op += n; } else { x = SI_BUFFERSIZE - op; DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); z = ccbp->hi_rxbuf + op; si_vbcopy(z, si_rxbuf, x); DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", n - x)); z = ccbp->hi_rxbuf; si_vbcopy(z, si_rxbuf + x, n - x); op += n; } /* clear collected characters from buffer */ ccbp->hi_rxopos = op; DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", n, op, ip)); /* * at this point... * n = number of chars placed in si_rxbuf */ /* * Avoid the grotesquely inefficient lineswitch * routine (ttyinput) in "raw" mode. It usually * takes about 450 instructions (that's without * canonical processing or echo!). slinput is * reasonably fast (usually 40 instructions * plus call overhead). */ if (tp->t_state & TS_CAN_BYPASS_L_RINT) { /* block if the driver supports it */ if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && (tp->t_cflag & CRTS_IFLOW || tp->t_iflag & IXOFF) && !(tp->t_state & TS_TBLOCK)) ttyblock(tp); tk_nin += n; tk_rawcc += n; tp->t_rawcc += n; pp->sp_delta_overflows += b_to_q((char *)si_rxbuf, n, &tp->t_rawq); ttwakeup(tp); if (tp->t_state & TS_TTSTOP && (tp->t_iflag & IXANY || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { tp->t_state &= ~TS_TTSTOP; tp->t_lflag &= ~FLUSHO; si_start(tp); } } else { /* * It'd be nice to not have to go through the * function call overhead for each char here. * It'd be nice to block input it, saving a * loop here and the call/return overhead. */ for(x = 0; x < n; x++) { i = si_rxbuf[x]; if (ttyld_rint(tp, i) == -1) { pp->sp_delta_overflows++; } } } goto more_rx; /* try for more until RXbuf is empty */ end_rx: /* XXX: Again, sorry about the gotos.. :-) */ /* * Do TX stuff */ ttyld_start(tp); } /* end of for (all ports on this controller) */ } /* end of for (all controllers) */ in_intr = 0; DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); } /* * Nudge the transmitter... * * XXX: I inherited some funny code here. It implies the host card only * interrupts when the transmit buffer reaches the low-water-mark, and does * not interrupt when it's actually hits empty. In some cases, we have * processes waiting for complete drain, and we need to simulate an interrupt * about when we think the buffer is going to be empty (and retry if not). * I really am not certain about this... I *need* the hardware manuals. */ static void si_start(struct tty *tp) { struct si_port *pp; volatile struct si_channel *ccbp; struct clist *qp; BYTE ipos; int nchar; int oldspl, count, n, amount, buffer_full; oldspl = spltty(); qp = &tp->t_outq; pp = TP2PP(tp); DPRINT((pp, DBG_ENTRY|DBG_START, "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", tp, tp->t_state, pp->sp_state, qp->c_cc)); if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) goto out; buffer_full = 0; ccbp = pp->sp_ccb; count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); while ((nchar = qp->c_cc) > 0) { if ((BYTE)count >= 255) { buffer_full++; break; } amount = min(nchar, (255 - (BYTE)count)); ipos = (unsigned int)ccbp->hi_txipos; n = q_to_b(&tp->t_outq, si_txbuf, amount); /* will it fit in one lump? */ if ((SI_BUFFERSIZE - ipos) >= n) { si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); } else { si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], SI_BUFFERSIZE - ipos); si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); } ccbp->hi_txipos += n; count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; } if (count != 0 && nchar == 0) { tp->t_state |= TS_BUSY; } else { tp->t_state &= ~TS_BUSY; } /* wakeup time? */ ttwwakeup(tp); DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", (BYTE)count, nchar, tp->t_state)); if (tp->t_state & TS_BUSY) { int time; time = ttspeedtab(tp->t_ospeed, chartimes); if (time > 0) { if (time < nchar) time = nchar / time; else time = 2; } else { DPRINT((pp, DBG_START, "bad char time value! %d\n", time)); time = hz/10; } if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); } else { pp->sp_state |= SS_LSTART; } DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); } out: splx(oldspl); DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); } /* * Note: called at splsoftclock from the timeout code * This has to deal with two things... cause wakeups while waiting for * tty drains on last process exit, and call l_start at about the right * time for protocols like ppp. */ static void si_lstart(void *arg) { struct si_port *pp = arg; struct tty *tp; int oldspl; DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", pp, pp->sp_state)); oldspl = spltty(); if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { splx(oldspl); return; } pp->sp_state &= ~SS_LSTART; pp->sp_state |= SS_INLSTART; tp = pp->sp_tty; /* deal with the process exit case */ ttwwakeup(tp); /* nudge protocols - eg: ppp */ ttyld_start(tp); pp->sp_state &= ~SS_INLSTART; splx(oldspl); } /* * Stop output on a line. called at spltty(); */ static void si_stop(struct tty *tp, int rw) { volatile struct si_channel *ccbp; struct si_port *pp; pp = TP2PP(tp); ccbp = pp->sp_ccb; DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ if (rw & FWRITE) { /* what level are we meant to be flushing anyway? */ if (tp->t_state & TS_BUSY) { si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); tp->t_state &= ~TS_BUSY; ttwwakeup(tp); /* Bruce???? */ } } #if 1 /* XXX: this doesn't work right yet.. */ /* XXX: this may have been failing because we used to call l_rint() * while we were looping based on these two counters. Now, we collect * the data and then loop stuffing it into l_rint(), making this * useless. Should we cause this to blow away the staging buffer? */ if (rw & FREAD) { ccbp->hi_rxopos = ccbp->hi_rxipos; } #endif } /* * Issue a command to the host card CPU. */ static void si_command(struct si_port *pp, int cmd, int waitflag) { int oldspl; volatile struct si_channel *ccbp = pp->sp_ccb; int x; DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", pp, cmd, waitflag, ccbp->hi_stat)); oldspl = spltty(); /* Keep others out */ /* wait until it's finished what it was doing.. */ /* XXX: sits in IDLE_BREAK until something disturbs it or break * is turned off. */ while((x = ccbp->hi_stat) != IDLE_OPEN && x != IDLE_CLOSE && x != IDLE_BREAK && x != cmd) { if (in_intr) { /* Prevent sleep in intr */ DPRINT((pp, DBG_PARAM, "cmd intr collision - completing %d\trequested %d\n", x, cmd)); splx(oldspl); return; } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, "sicmd1", 1)) { splx(oldspl); return; } } /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ /* if there was a pending command, cause a state-change wakeup */ switch(pp->sp_pend) { case LOPEN: case MPEND: case MOPEN: case CONFIG: case SBREAK: case EBREAK: wakeup(&pp->sp_state); break; default: break; } pp->sp_pend = cmd; /* New command pending */ ccbp->hi_stat = cmd; /* Post it */ if (waitflag) { if (in_intr) { /* If in interrupt handler */ DPRINT((pp, DBG_PARAM, "attempt to sleep in si_intr - cmd req %d\n", cmd)); splx(oldspl); return; } else while(ccbp->hi_stat != IDLE_OPEN && ccbp->hi_stat != IDLE_BREAK) { if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, "sicmd2", 0)) break; } } splx(oldspl); } #ifdef SI_DEBUG void si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) { va_list ap; if ((pp == NULL && (si_debug&flags)) || (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { if (pp != NULL) printf("%ci%d(%d): ", 's', (int)SI_CARD(minor(pp->sp_tty->t_dev)), (int)SI_PORT(minor(pp->sp_tty->t_dev))); va_start(ap, fmt); vprintf(fmt, ap); va_end(ap); } } static char * si_mctl2str(enum si_mctl cmd) { switch (cmd) { case GET: return("GET"); case SET: return("SET"); case BIS: return("BIS"); case BIC: return("BIC"); } return("BAD"); } #endif /* DEBUG */ static char * si_modulename(int host_type, int uart_type) { switch (host_type) { /* Z280 based cards */ case SIEISA: case SIHOST2: case SIHOST: case SIPCI: switch (uart_type) { case 0: return(" (XIO)"); case 1: return(" (SI)"); } break; /* T225 based hosts */ case SIJETPCI: case SIJETISA: switch (uart_type) { case 0: return(" (SI)"); case 40: return(" (XIO)"); case 72: return(" (SXDC)"); } break; } return(""); }