/* * Copyright (c) 1988 Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Computer Consoles Inc. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the University of California, Berkeley. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * @(#)mp.c 7.6 (Berkeley) 7/9/88 */ #include "mp.h" #if NMP > 0 /* * Multi Protocol Communications Controller (MPCC). * Asynchronous Terminal Protocol Support. */ #include "param.h" #include "ioctl.h" #include "tty.h" #include "dir.h" #include "user.h" #include "map.h" #include "buf.h" #include "conf.h" #include "file.h" #include "uio.h" #include "errno.h" #include "syslog.h" #include "vmmac.h" #include "kernel.h" #include "clist.h" #include "../machine/pte.h" #include "../machine/mtpr.h" #include "../tahoevba/vbavar.h" #include "../tahoevba/mpreg.h" #define MPCHUNK 16 #define MPPORT(n) ((n) & 0xf) #define MPUNIT(n) ((n) >> 4) /* * Driver information for auto-configuration stuff. */ int mpprobe(), mpattach(), mpintr(); struct vba_device *mpinfo[NMP]; long mpstd[] = { 0 }; struct vba_driver mpdriver = { mpprobe, 0, mpattach, 0, mpstd, "mp", mpinfo }; int mpstart(); struct mpevent *mpparam(); struct mpevent *mp_getevent(); /* * The following structure is needed to deal with mpcc's convoluted * method for locating it's mblok structures (hold your stomach). * When an mpcc is reset at boot time it searches host memory * looking for a string that says ``ThIs Is MpCc''. The mpcc * then reads the structure to locate the pointer to it's mblok * structure (you can wretch now). */ struct mpbogus { char s[12]; /* `ThIs Is MpCc'' */ u_char status; u_char unused; u_short magic; struct mblok *mb; struct mblok *mbloks[NMP]; /* can support at most 16 mpcc's */ } mpbogus = { 'T','h','I','s',' ','I','s',' ','M','p','C','c' }; /* * Software state per unit. */ struct mpsoftc { u_int ms_ivec; /* interrupt vector */ u_int ms_softCAR; /* software carrier for async */ struct mblok *ms_mb; /* mpcc status area */ struct vb_buf ms_buf; /* vba resources for ms_mb */ struct hxmtl ms_hxl[MPMAXPORT];/* host transmit list */ struct asyncparam ms_async[MPMAXPORT][MPINSET];/* async structs */ char ms_cbuf[MPMAXPORT][MPOUTSET][CBSIZE];/* input character buffers */ } mp_softc[NMP]; struct tty mp_tty[NMP*MPCHUNK]; #ifndef lint int nmp = NMP*MPCHUNK; #endif int ttrstrt(); mpprobe(reg, vi) caddr_t reg; struct vba_device *vi; { register int br, cvec; register struct mpsoftc *ms; #ifdef lint br = 0; cvec = br; br = cvec; mpintr(0); mpdlintr(0); #endif if (badaddr(reg, 2)) return (0); ms = &mp_softc[vi->ui_unit]; /* * Allocate page tables and mblok * structure (mblok in non-cached memory). */ if (vbainit(&ms->ms_buf, sizeof (struct mblok), VB_32BIT) == 0) { printf("mp%d: vbainit failed\n", vi->ui_unit); return (0); } ms->ms_mb = (struct mblok *)ms->ms_buf.vb_rawbuf; ms->ms_ivec = MPINTRBASE + 2*vi->ui_unit; /* XXX */ br = 0x14, cvec = ms->ms_ivec; /* XXX */ return (sizeof (*reg)); } mpattach(vi) register struct vba_device *vi; { register struct mpsoftc *ms = &mp_softc[vi->ui_unit]; ms->ms_softCAR = vi->ui_flags; /* * Setup pointer to mblok, initialize bogus * status block used by mpcc to locate the pointer * and then poke the mpcc to get it to search host * memory to find mblok pointer. */ mpbogus.mbloks[vi->ui_unit] = (struct mblok *)ms->ms_buf.vb_physbuf; *(short *)vi->ui_addr = 0x100; /* magic */ } /* * Open an mpcc port. */ /* ARGSUSED */ mpopen(dev, mode) dev_t dev; { register struct tty *tp; register struct mpsoftc *ms; int error, s, port, unit, mpu; struct vba_device *vi; struct mpport *mp; struct mpevent *ev; unit = minor(dev); mpu = MPUNIT(unit); if (mpu >= NMP || (vi = mpinfo[mpu]) == 0 || vi->ui_alive == 0) return (ENXIO); tp = &mp_tty[unit]; if (tp->t_state & TS_XCLUDE && u.u_uid != 0) return (EBUSY); ms = &mp_softc[mpu]; port = MPPORT(unit); if (ms->ms_mb->mb_proto[port] != MPPROTO_ASYNC || ms->ms_mb->mb_status != MP_OPOPEN) return (ENXIO); mp = &ms->ms_mb->mb_port[port]; /* host mpcc struct */ s = spl8(); while (mp->mp_flags & MP_PROGRESS) sleep((caddr_t)&tp->t_canq, TTIPRI); while (tp->t_state & TS_WOPEN) sleep((caddr_t)&tp->t_canq, TTIPRI); tp->t_state |= TS_WOPEN; tp->t_addr = (caddr_t)ms; tp->t_oproc = mpstart; tp->t_dev = dev; if ((tp->t_state & TS_ISOPEN) == 0) { ttychars(tp); if (tp->t_ispeed == 0) { tp->t_ispeed = B9600; tp->t_ospeed = B9600; tp->t_flags = ODDP|EVENP|ECHO; } /* * Initialize port state: init MPCC interface * structures for port and setup modem control. */ mp->mp_proto = MPPROTO_ASYNC; /* XXX */ error = mpportinit(ms, mp, port); if (error) goto bad; ev = mpparam(unit); if (ev == 0) { error = ENOBUFS; goto bad; } mpcmd(ev, EVCMD_OPEN, 0, ms->ms_mb, port); } while ((tp->t_state & TS_CARR_ON) == 0) sleep((caddr_t)&tp->t_rawq, TTIPRI); error = (*linesw[tp->t_line].l_open)(dev,tp); done: splx(s); /* wakeup anyone waiting for open to complete */ wakeup((caddr_t)&tp->t_canq); return (error); bad: tp->t_state &= ~TS_WOPEN; goto done; } /* * Close an mpcc port. */ /* ARGSUSED */ mpclose(dev, flag) dev_t dev; { register struct tty *tp; register struct mpport *mp; register struct mpevent *ev; int s, port, unit, error; struct mblok *mb; unit = minor(dev); tp = &mp_tty[unit]; port = MPPORT(unit); mb = mp_softc[MPUNIT(unit)].ms_mb; mp = &mb->mb_port[port]; s = spl8(); if (mp->mp_flags & MP_PROGRESS) { /* close in progress??? */ if (mp->mp_flags & MP_REMBSY) { mp->mp_flags &= ~MP_REMBSY; splx(s); return (0); } while (mp->mp_flags & MP_PROGRESS) sleep((caddr_t)&tp->t_canq,TTIPRI); } error = 0; mp->mp_flags |= MP_PROGRESS; (*linesw[tp->t_line].l_close)(tp); ev = mp_getevent(mp, unit); if (ev == 0) { error = ENOBUFS; mp->mp_flags &= ~MP_PROGRESS; goto out; } if (tp->t_state & TS_HUPCLS || (tp->t_state & TS_ISOPEN) == 0) mpmodem(unit, MMOD_OFF); else mpmodem(unit, MMOD_ON); mpcmd(ev, EVCMD_CLOSE, 0, mb, port); ttyclose(tp); out: if (mp->mp_flags & MP_REMBSY) mpclean(mb, port); splx(s); return (error); } /* * Read from an mpcc port. */ mpread(dev, uio) dev_t dev; struct uio *uio; { struct tty *tp; tp = &mp_tty[minor(dev)]; return ((*linesw[tp->t_line].l_read)(tp, uio)); } /* * Write to an mpcc port. */ mpwrite(dev, uio) dev_t dev; struct uio *uio; { struct tty *tp; tp = &mp_tty[minor(dev)]; return ((*linesw[tp->t_line].l_write)(tp, uio)); } /* * Ioctl for a mpcc port */ mpioctl(dev, cmd, data, flag) dev_t dev; caddr_t data; { register struct tty *tp; register struct mpsoftc *ms; register struct mpevent *ev; register struct mpport *mp; int s, port, error, unit; struct mblok *mb; unit = minor(dev); tp = &mp_tty[unit]; ms = &mp_softc[MPUNIT(unit)]; mb = ms->ms_mb; error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag); if (error >= 0) return (error); error = ttioctl(tp, cmd, data, flag); if (error >= 0) { if (cmd == TIOCSETP || cmd == TIOCSETN || cmd == TIOCLBIS || cmd == TIOCLBIC || cmd == TIOCLSET || cmd == TIOCSETC) { ev = mpparam(unit); if (ev == 0) error = ENOBUFS; else mpcmd(ev, EVCMD_IOCTL, A_CHGALL, mb, MPPORT(unit)); } return (error); } switch (cmd) { case TIOCSBRK: /* send break */ case TIOCCBRK: /* clear break */ port = MPPORT(unit); mp = &mb->mb_port[port]; s = spl8(); ev = mp_getevent(mp, unit); if (ev) mpcmd(ev, EVCMD_IOCTL, (cmd == TIOCSBRK ? A_BRKON : A_BRKOFF), mb, port); else error = ENOBUFS; splx(s); break; case TIOCSDTR: /* set dtr control line */ break; case TIOCCDTR: /* clear dtr control line */ break; default: error = ENOTTY; break; } return (error); } struct mpevent * mpparam(unit) int unit; { register struct mpevent *ev; register struct mpport *mp; register struct tty *tp; struct mblok *mb; struct mpsoftc *ms; register struct asyncparam *asp; int port; ms = &mp_softc[MPUNIT(unit)]; mb = ms->ms_mb; port = MPPORT(unit); mp = &mb->mb_port[port]; ev = mp_getevent(mp, unit); /* XXX */ if (ev == 0) return (ev); tp = &mp_tty[unit]; /* YUCK */ asp = &ms->ms_async[port][mp->mp_on?mp->mp_on-1:MPINSET-1]; asp->ap_xon = (u_char)tp->t_startc; asp->ap_xoff = (u_char)tp->t_stopc; if ((tp->t_flags & RAW) || (tp->t_stopc == -1) || (tp->t_startc == -1)) asp->ap_xena = MPA_DIS; else asp->ap_xena = MPA_ENA; asp->ap_xany = ((tp->t_flags & DECCTQ) ? MPA_DIS : MPA_ENA); #ifdef notnow if (tp->t_flags & (RAW|LITOUT|PASS8)) { #endif asp->ap_data = MPCHAR_8; asp->ap_parity = MPPAR_NONE; #ifdef notnow } else { asp->ap_data = MPCHAR_7; if ((tp->t_flags & (EVENP|ODDP)) == ODDP) asp->ap_parity = MPPAR_ODD; else asp->ap_parity = MPPAR_EVEN; } #endif if (tp->t_ospeed == B110) asp->ap_stop = MPSTOP_2; else asp->ap_stop = MPSTOP_1; if (tp->t_ospeed == EXTA || tp->t_ospeed == EXTB) asp->ap_baud = M19200; else asp->ap_baud = tp->t_ospeed; asp->ap_loop = MPA_DIS; /* disable loopback */ asp->ap_rtimer = A_RCVTIM; /* default receive timer */ if (ms->ms_softCAR & (1<<port)) setm(&asp->ap_modem, A_DTR, ASSERT); else setm(&asp->ap_modem, A_DTR, AUTO); seti(&asp->ap_intena, A_DCD); return (ev); } mpstart(tp) register struct tty *tp; { register struct mpevent *ev; register struct mpport *mp; struct mblok *mb; struct mpsoftc *ms; int port, unit, xcnt, n, s, i; struct hxmtl *hxp; struct clist outq; s = spl8(); unit = minor(tp->t_dev); ms = &mp_softc[MPUNIT(unit)]; mb = ms->ms_mb; port = MPPORT(unit); mp = &mb->mb_port[port]; hxp = &ms->ms_hxl[port]; xcnt = 0; outq = tp->t_outq; for (i = 0; i < MPXMIT; i++) { if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) break; if (outq.c_cc <= TTLOWAT(tp)) { if (tp->t_state & TS_ASLEEP) { tp->t_state &= ~TS_ASLEEP; wakeup((caddr_t)&tp->t_outq); } if (tp->t_wsel) { selwakeup(tp->t_wsel, tp->t_state & TS_WCOLL); tp->t_wsel = 0; tp->t_state &= ~TS_WCOLL; } } if (outq.c_cc == 0) break; /* * If we're not currently busy outputting, * and there is data to be output, set up * port transmit structure to send to mpcc. */ if (tp->t_flags & (RAW|LITOUT)) n = ndqb(&outq, 0); else { n = ndqb(&outq, 0200); if (n == 0) { n = getc(&outq); timeout(ttrstrt, (caddr_t)tp, (n&0177)+6); tp->t_state |= TS_TIMEOUT; break; } } hxp->dblock[i] = (caddr_t)kvtophys(outq.c_cf); hxp->size[i] = n; xcnt++; /* count of xmts to send */ ndadvance(&outq, n); } /* * If data to send, poke mpcc. */ if (xcnt) { ev = mp_getevent(mp, unit); if (ev == 0) { tp->t_state &= ~(TS_BUSY|TS_TIMEOUT); } else { tp->t_state |= TS_BUSY; ev->ev_count = xcnt; mpcmd(ev, EVCMD_WRITE, 0, mb, MPPORT(unit)); } } splx(s); } /* * Advance cc bytes from q but don't free memory. */ ndadvance(q, cc) register struct clist *q; register cc; { register struct cblock *bp; char *end; int rem, s; s = spltty(); if (q->c_cc <= 0) goto out; while (cc>0 && q->c_cc) { bp = (struct cblock *)((int)q->c_cf & ~CROUND); if ((int)bp == (((int)q->c_cl-1) & ~CROUND)) { end = q->c_cl; } else { end = (char *)((int)bp + sizeof (struct cblock)); } rem = end - q->c_cf; if (cc >= rem) { cc -= rem; q->c_cc -= rem; q->c_cf = bp->c_next->c_info; } else { q->c_cc -= cc; q->c_cf += cc; break; } } if (q->c_cc <= 0) { q->c_cf = q->c_cl = NULL; q->c_cc = 0; } out: splx(s); } /* * Stop output on a line, e.g. for ^S/^Q or output flush. */ /* ARGSUSED */ mpstop(tp, rw) register struct tty *tp; int rw; { int s; s = spl8(); /* XXX: DISABLE TRANSMITTER */ if (tp->t_state & TS_BUSY) { if ((tp->t_state & TS_TTSTOP) == 0) tp->t_state |= TS_FLUSH; } splx(s); } /* * Initialize an async port's MPCC state. */ mpportinit(ms, mp, port) register struct mpsoftc *ms; register struct mpport *mp; int port; { register struct mpevent *ev; register int i; caddr_t ptr; mp->mp_on = mp->mp_off = 0; mp->mp_nextrcv = 0; mp->mp_flags = 0; ev = &mp->mp_recvq[0]; for (i = 0; ev < &mp->mp_recvq[MPINSET]; ev++, i++) { ev->ev_status = EVSTATUS_FREE; ev->ev_cmd = 0; ev->ev_opts = 0; ev->ev_error = 0; ev->ev_flags = 0; ev->ev_count = 0; ev->ev_un.hxl = (struct hxmtl *) kvtophys(&ms->ms_hxl[port]); ev->ev_params = (caddr_t) kvtophys(&ms->ms_async[port][i]); } ev = &mp->mp_sendq[0]; for (i = 0; ev < &mp->mp_sendq[MPOUTSET]; ev++, i++) { /* init so that L2 can't send any events */ /* to host until open has completed */ ev->ev_status = EVSTATUS_FREE; ev->ev_cmd = 0; ev->ev_error = 0; ev->ev_flags = 0; ev->ev_count = 0; ptr = (caddr_t) &ms->ms_cbuf[port][i][0]; ev->ev_un.rcvblk = (u_char *)kvtophys(ptr); ev->ev_params = (caddr_t) kvtophys(ptr); } return (0); } /* * Send an event to an mpcc. */ mpcmd(ev, cmd, flags, mb, port) register struct mpevent *ev; struct mblok *mb; { int s; s = spl8(); /* move host values to inbound entry */ ev->ev_cmd = cmd; ev->ev_opts = flags; /* show event ready for mpcc */ ev->ev_status = EVSTATUS_GO; mpintmpcc(mb, port); splx(s); } /* * Return the next available event entry for the indicated port. */ struct mpevent * mp_getevent(mp, unit) register struct mpport *mp; int unit; { register struct mpevent *ev; int i, s; s = spl8(); ev = &mp->mp_recvq[mp->mp_on]; if (ev->ev_status != EVSTATUS_FREE) goto bad; /* * If not a close request, verify one extra * event is available for closing the port. */ if ((mp->mp_flags & MP_PROGRESS) == 0) { if ((i = mp->mp_on + 1) >= MPINSET) i = 0; if (mp->mp_recvq[i].ev_status != EVSTATUS_FREE) goto bad; } /* init inbound fields marking this entry as busy */ ev->ev_error = 0; ev->ev_flags = 0; ev->ev_count = 0; ev->ev_status = EVSTATUS_BUSY; /* adjust pointer to next available inbound entry */ adjptr(mp->mp_on, MPINSET); splx(s); return (ev); bad: splx(s); log(LOG_ERR, "mp%d: port%d, out of events", MPUNIT(unit), MPPORT(unit)); return ((struct mpevent *)0); } mpmodem(unit, flag) int unit, flag; { struct mpsoftc *ms = &mp_softc[MPUNIT(unit)]; int port = MPPORT(unit); register struct mpport *mp; register struct asyncparam *asp; mp = &ms->ms_mb->mb_port[port]; asp = &ms->ms_async[port][mp->mp_on?mp->mp_on-1:MPINSET-1]; if (flag == MMOD_ON) { if (ms->ms_softCAR & (1 << port)) setm(&asp->ap_modem, A_DTR, ASSERT); else setm(&asp->ap_modem, A_DTR, AUTO); seti(&asp->ap_intena, A_DCD); } else { setm(&asp->ap_modem, 0, DROP); seti(&asp->ap_intena, 0); } } /* * Set up the modem control structure according to mask. * Each set bit in the mask means assert the corresponding * modem control line, otherwise, it will be dropped. * RTS is special since it can either be asserted, dropped * or put in auto mode for auto modem control. */ static setm(mc, mask, rts) register struct mdmctl *mc; register int mask; { mc->mc_rngdsr = (mask & A_RNGDSR) ? ASSERT : DROP; mc->mc_rate = (mask & A_RATE) ? ASSERT : DROP; mc->mc_dcd = (mask & A_DCD) ? ASSERT : DROP; mc->mc_sectx = (mask & A_SECTX) ? ASSERT : DROP; mc->mc_cts = (mask & A_CTS) ? ASSERT : DROP; mc->mc_secrx = (mask & A_SECRX) ? ASSERT : DROP; mc->mc_dtr = (mask & A_DTR) ? ASSERT : DROP; mc->mc_rts = rts; } /* * Set up the status change enable field from mask. * When a signal is enabled in this structure and * and a change in state on a corresponding modem * control line occurs, a status change event will * be delivered to the host. */ static seti(mc, mask) register struct mdmctl *mc; register int mask; { mc->mc_rngdsr = (mask & A_RNGDSR) ? MDM_ON : MDM_OFF; mc->mc_rate = (mask & A_RATE) ? MDM_ON : MDM_OFF; mc->mc_dcd = (mask & A_DCD) ? MDM_ON : MDM_OFF; mc->mc_sectx = (mask & A_SECTX) ? MDM_ON : MDM_OFF; mc->mc_cts = (mask & A_CTS) ? MDM_ON : MDM_OFF; mc->mc_secrx = (mask & A_SECRX) ? MDM_ON : MDM_OFF; mc->mc_dtr = (mask & A_DTR) ? MDM_ON : MDM_OFF; mc->mc_rts = (mask & A_RTS) ? MDM_ON : MDM_OFF; } mpcleanport(mb, port) struct mblok *mb; int port; { register struct mpport *mp; register struct tty *tp; mp = &mb->mb_port[port]; if (mp->mp_proto == MPPROTO_ASYNC) { mp->mp_flags = MP_REMBSY; /* signal loss of carrier and close */ tp = &mp_tty[mb->mb_unit*MPCHUNK+port]; ttyflush(tp, FREAD|FWRITE); (void) (*linesw[tp->t_line].l_modem)(tp, 0); (void) mpclose(tp->t_dev, 0); } } mpclean(mb, port) register struct mblok *mb; int port; { register struct mpport *mp; register struct mpevent *ev; register int i; u_char list[2]; int unit; mp = &mb->mb_port[port]; unit = mb->mb_unit; for (i = mp->mp_off; i != mp->mp_on; i = (i+1 % MPINSET)) { ev = &mp->mp_recvq[i]; ev->ev_error = ENXIO; ev->ev_status = EVSTATUS_DONE; } list[0] = port, list[1] = MPPORT_EOL; mpxintr(unit, list); mprintr(unit, list); /* Clear async for port */ mp->mp_proto = MPPROTO_UNUSED; mp->mp_flags = 0; mp->mp_on = 0; mp->mp_off = 0; mp->mp_nextrcv = 0; mp_tty[unit*MPCHUNK + port].t_state = 0; for (ev = &mp->mp_sendq[0]; ev < &mp->mp_sendq[MPOUTSET]; ev++) { ev->ev_status = EVSTATUS_FREE; ev->ev_cmd = 0; ev->ev_error = 0; ev->ev_un.rcvblk = 0; ev->ev_params = 0; } for (ev = &mp->mp_recvq[0]; ev < &mp->mp_recvq[MPINSET]; ev++) { ev->ev_status = EVSTATUS_FREE; ev->ev_cmd = 0; ev->ev_error = 0; ev->ev_params = 0; } } /* * MPCC interrupt handler. */ mpintr(mpcc) int mpcc; { register struct mblok *mb; register struct his *his; mb = mp_softc[mpcc].ms_mb; if (mb == 0) { printf("mp%d: stray interrupt\n", mpcc); return; } his = &mb->mb_hostint; his->semaphore &= ~MPSEMA_AVAILABLE; /* * Check for events to be processed. */ if (his->proto[MPPROTO_ASYNC].outbdone[0] != MPPORT_EOL) mprintr(mpcc, his->proto[MPPROTO_ASYNC].outbdone); if (his->proto[MPPROTO_ASYNC].inbdone[0] != MPPORT_EOL) mpxintr(mpcc, his->proto[MPPROTO_ASYNC].inbdone); if (mb->mb_harderr || mb->mb_softerr) mperror(mb, mpcc); his->semaphore |= MPSEMA_AVAILABLE; } /* * Handler for processing completion of transmitted events. */ mpxintr(unit, list) register u_char *list; { register struct mpport *mp; register struct mpevent *ev; register struct mblok *mb; register struct tty *tp; register struct asyncparam *ap; struct mpsoftc *ms; int port, i, j; ms = &mp_softc[unit]; mb = mp_softc[unit].ms_mb; for (j = 0; j < MPMAXPORT && ((port = *list++) != MPPORT_EOL); j++) { /* * Process each completed entry in the inbound queue. */ mp = &mb->mb_port[port]; tp = &mp_tty[unit*MPCHUNK + port]; #define nextevent(mp) &mp->mp_recvq[mp->mp_off] ev = nextevent(mp); for(; ev->ev_status & EVSTATUS_DONE; ev = nextevent(mp)) { /* YUCK */ ap = &ms->ms_async[port][mp->mp_off]; mppurge((caddr_t)ap, (int)sizeof (*ap)); switch (ev->ev_cmd) { case EVCMD_OPEN: /* * Open completion, start all reads and * assert modem status information. */ for (i = 0; i < MPOUTSET; i++) mp->mp_sendq[i].ev_status = EVSTATUS_GO; (*linesw[tp->t_line].l_modem) (tp, ap->ap_modem.mc_dcd == ASSERT); break; case EVCMD_CLOSE: /* * Close completion, flush all pending * transmissions, free resources, and * cleanup mpcc port state. */ for (i = 0; i < MPOUTSET; i++) { mp->mp_sendq[i].ev_status = EVSTATUS_FREE; mp->mp_sendq[i].ev_un.rcvblk = 0; mp->mp_sendq[i].ev_params = 0; } tp->t_state &= ~TS_CARR_ON; mp->mp_on = mp->mp_off = mp->mp_nextrcv = 0; mp->mp_flags &= ~MP_PROGRESS; mp->mp_proto = MPPROTO_UNUSED; wakeup((caddr_t)&tp->t_canq); goto done; case EVCMD_IOCTL: /* * Nothing to do, just pitch. */ break; case EVCMD_WRITE: /* * Transmission completed, update tty * state and restart output. */ tp->t_state &= ~TS_BUSY; if (tp->t_state & TS_FLUSH) tp->t_state &= ~TS_FLUSH; else { register int cc = 0, n; struct hxmtl *hxp; hxp = &ms->ms_hxl[port]; for(n = 0; n < ev->ev_count; n++) cc += hxp->size[n]; ndflush(&tp->t_outq, cc); } switch (ev->ev_error) { case A_SIZERR: /*# error in xmt data size */ mplog(unit, port, A_XSIZE, 0); break; case A_NXBERR: /*# no more xmt evt buffers */ mplog(unit, port, A_NOXBUF, 0); break; } mpstart(tp); break; default: mplog(unit, port, A_INVCMD, (int)ev->ev_cmd); break; } /* re-init all values in this entry */ ev->ev_cmd = 0; ev->ev_opts = 0; ev->ev_error = 0; ev->ev_flags = 0; ev->ev_count = 0; /* show this entry is available for use */ ev->ev_status = EVSTATUS_FREE; adjptr(mp->mp_off, MPINSET); #undef nextevent } done: ; } } /* * Handler for processing received events. */ mprintr(unit, list) u_char *list; { register struct tty *tp; register struct mpport *mp; register struct mpevent *ev; struct mblok *mb; register int cc; register char *cp; struct mpsoftc *ms; caddr_t ptr; char *rcverr; int port, i; ms = &mp_softc[unit]; mb = mp_softc[unit].ms_mb; for (i = 0; i < MPMAXPORT && (port = *list++) != MPPORT_EOL; i++) { tp = &mp_tty[unit*MPCHUNK + port]; mp = &mb->mb_port[port]; ev = &mp->mp_sendq[mp->mp_nextrcv]; while (ev->ev_status & EVSTATUS_DONE) { if (ev->ev_cmd != EVCMD_READ && ev->ev_cmd != EVCMD_STATUS) { mplog(unit, port, "unexpected command", (int)ev->ev_cmd); goto next; } if (ev->ev_cmd == EVCMD_STATUS) { /* * Status change, look for carrier changes. */ if (ev->ev_opts == DCDASRT || ev->ev_opts == DCDDROP) (*linesw[tp->t_line].l_modem) (tp, ev->ev_opts == DCDASRT); else mplog(unit, port, "unexpect status command", (int)ev->ev_opts); goto next; } /* * Process received data. */ if ((tp->t_state & (TS_ISOPEN|TS_WOPEN)) == 0) goto next; cc = ev->ev_count; if (cc == 0) goto next; /* YUCK */ cp = ms->ms_cbuf[port][mp->mp_nextrcv]; mppurge(cp, CBSIZE); while (cc-- > 0) { /* * A null character is inserted, potentially * when a break or framing error occurs. If * we're not in raw mode, substitute the * interrupt character. */ if (*cp == 0 && (ev->ev_error == BRKASRT || ev->ev_error == FRAMERR)) if ((tp->t_flags&RAW) == 0) *cp = tp->t_intrc; (*linesw[tp->t_line].l_rint)(*cp++, tp); } /* setup for next read */ ptr = (caddr_t)&mp_softc[unit].ms_cbuf[port][mp->mp_nextrcv][0]; ev->ev_un.rcvblk = (u_char *)kvtophys(ptr); ev->ev_params = (caddr_t) kvtophys(ptr); switch(ev->ev_error) { case RCVDTA: /* Normal (good) rcv data */ /* do not report the following */ /* they are "normal" errors */ case FRAMERR: /* frame error */ case BRKASRT: /* Break condition */ case PARERR: /* parity error */ rcverr = (char *)0; break; case OVRNERR: /* Overrun error */ rcverr = "overrun error"; break; case OVFERR: /* Overflow error */ rcverr = "overflow error"; break; default: rcverr = "undefined rcv error"; } if (rcverr != (char *)0) mplog(unit, port, rcverr, (int)ev->ev_error); next: ev->ev_cmd = 0; ev->ev_opts = 0; ev->ev_error = 0; ev->ev_flags = 0; ev->ev_status = EVSTATUS_GO; /* start next read */ adjptr(mp->mp_nextrcv, MPOUTSET); ev = &mp->mp_sendq[mp->mp_nextrcv]; } } } /* * Log an mpcc diagnostic. */ mplog(unit, port, cp, flags) char *cp; { if (flags) log(LOG_ERR, "mp%d: port%d, %s (%d)\n", unit, port, cp, flags); else log(LOG_ERR, "mp%d: port%d, %s\n", unit, port, cp); } int MPHOSTINT = 1; mptimeint(mb) register struct mblok *mb; { mb->mb_mpintcnt = 0; mb->mb_mpintclk = (caddr_t)0; *(u_short *)mpinfo[mb->mb_unit]->ui_addr = 2; } /* * Interupt mpcc */ mpintmpcc(mb, port) register struct mblok *mb; { mb->mb_intr[port] |= MPSEMA_WORK; if (++mb->mb_mpintcnt == MPHOSTINT) { mb->mb_mpintcnt = 0; *(u_short *)mpinfo[mb->mb_unit]->ui_addr = 2; if (mb->mb_mpintclk) { untimeout(mptimeint, (caddr_t)mb); mb->mb_mpintclk = 0; } } else { if (mb->mb_mpintclk == 0) { timeout(mptimeint, (caddr_t)mb, 4); mb->mb_mpintclk = (caddr_t)1; } } } static char *mpherrmsg[] = { "", "Bus error", /* MPBUSERR */ "Address error", /* ADDRERR */ "Undefined ecc interrupt", /* UNDECC */ "Undefined interrupt", /* UNDINT */ "Power failure occurred", /* PWRFL */ "Stray transmit done interrupt", /* NOXENTRY */ "Two fast timers on one port", /* TWOFTMRS */ "Interrupt queue full", /* INTQFULL */ "Interrupt queue ack error", /* INTQERR */ "Uncorrectable dma parity error", /* CBPERR */ "32 port ACAP failed power up", /* ACPDEAD */ }; #define NHERRS (sizeof (mpherrmsg) / sizeof (mpherrmsg[0])) mperror(mb, unit) register struct mblok *mb; int unit; { register char *cp; register int i; if (mb->mb_softerr) { switch (mb->mb_softerr) { case DMAPERR: /* dma parity error */ cp = "dma parity error"; break; case ECCERR: cp = "local memory ecc error"; break; default: cp = "unknown error"; break; } log(LOG_ERR, "mp%d: soft error, %s", unit, cp); mb->mb_softerr = 0; } if (mb->mb_harderr) { if (mb->mb_harderr < NHERRS) cp = mpherrmsg[mb->mb_harderr]; else cp = "unknown error"; log(LOG_ERR, "mp%d: hard error, %s", unit, cp); if (mb->mb_status == MP_OPOPEN) { for (i = 0; i < MPMAXPORT; i++) { mpcleanport(mb, i); mb->mb_proto[i] = MPPROTO_UNUSED; } } mb->mb_harderr = 0; mb->mb_status = 0; } } mppurge(addr, cc) register caddr_t addr; register int cc; { for (; cc >= 0; addr += NBPG, cc -= NBPG) mtpr(P1DC, addr); } /* * MPCC Download Pseudo-device. */ char mpdlbuf[MPDLBUFSIZE]; int mpdlbusy; /* interlock on download buffer */ int mpdlerr; mpdlopen(dev) dev_t dev; { int unit, mpu; struct vba_device *vi; unit = minor(dev); mpu = MPUNIT(unit); if (mpu >= NMP || (vi = mpinfo[mpu]) == 0 || vi->ui_alive == 0) return (ENODEV); return (0); } mpdlwrite(dev, uio) dev_t dev; struct uio *uio; { register struct mpsoftc *ms = &mp_softc[MPUNIT(minor(dev))]; register struct mpdl *dl; int error; if (ms->ms_mb == 0 || ms->ms_mb->mb_status != MP_DLOPEN) return (EFAULT); dl = &ms->ms_mb->mb_dl; dl->mpdl_count = uio->uio_iov->iov_len; dl->mpdl_data = (caddr_t) kvtophys(mpdlbuf); if (error = uiomove(mpdlbuf, (int)dl->mpdl_count, UIO_WRITE, uio)) return (error); uio->uio_resid -= dl->mpdl_count; /* set up return from write */ dl->mpdl_cmd = MPDLCMD_NORMAL; error = mpdlwait(dl); return (error); } mpdlclose(dev) dev_t dev; { register struct mblok *mb = mp_softc[MPUNIT(minor(dev))].ms_mb; if (mb == 0 || mb->mb_status != MP_DLDONE) { mpbogus.status = 0; if (mpbogus.mb == mpbogus.mbloks[MPUNIT(minor(dev))]) mpdlbusy--; return (EEXIST); } mb->mb_status = MP_OPOPEN; mpbogus.status = 0; /* set to dead, for board handshake */ mb->mb_hostint.imok = MPIMOK_DEAD; return (0); } int mpdltimeout(); /* ARGSUSED */ mpdlioctl(dev, cmd, data, flag) dev_t dev; caddr_t data; { register struct mblok *mb; register struct mpdl *dl; int unit, error, s, i; mb = mp_softc[unit=MPUNIT(minor(dev))].ms_mb; if (mb == 0) return (EEXIST); dl = &mb->mb_dl; error = 0; switch (cmd) { case MPIOPORTMAP: bcopy(data, (caddr_t)mb->mb_proto, sizeof (mb->mb_proto)); break; case MPIOHILO: bcopy(data, (caddr_t)&mb->mb_hiport, 2*(sizeof(mb->mb_hiport))); break; case MPIOENDDL: dl->mpdl_count = 0; dl->mpdl_data = 0; dl->mpdl_cmd = MPIOENDDL&IOCPARM_MASK; error = mpdlwait(dl); mpccinit(unit); mb->mb_status = MP_DLDONE; mpdlbusy--; break; case MPIOENDCODE: dl->mpdl_count = 0; dl->mpdl_data = 0; dl->mpdl_cmd = MPIOENDCODE&IOCPARM_MASK; error = mpdlwait(dl); break; case MPIOASYNCNF: bcopy(data, mpdlbuf, sizeof (struct abdcf)); dl->mpdl_data = (caddr_t) kvtophys(mpdlbuf); dl->mpdl_count = sizeof (struct abdcf); dl->mpdl_cmd = MPIOASYNCNF&IOCPARM_MASK; error = mpdlwait(dl); break; case MPIOSTARTDL: while (mpdlbusy) sleep((caddr_t)&mpdlbusy, PZERO+1); mpdlbusy++; /* initialize the downloading interface */ mpbogus.magic = MPMAGIC; mpbogus.mb = mpbogus.mbloks[unit]; mpbogus.status = 1; dl->mpdl_status = EVSTATUS_FREE; dl->mpdl_count = 0; dl->mpdl_cmd = 0; dl->mpdl_data = (char *) 0; mpdlerr = 0; mb->mb_magic = MPMAGIC; mb->mb_ivec = mp_softc[unit].ms_ivec+1; /* download vector */ mb->mb_status = MP_DLPEND; mb->mb_diagswitch[0] = 'A'; mb->mb_diagswitch[1] = 'P'; s = spl8(); *(u_short *)mpinfo[unit]->ui_addr = 2; timeout(mpdltimeout, (caddr_t)mb, 30*hz); sleep((caddr_t)&mb->mb_status, PZERO+1); splx(s); if (mb->mb_status == MP_DLOPEN) { untimeout(mpdltimeout, (caddr_t)mb); } else if (mb->mb_status == MP_DLTIME) { mpbogus.status = 0; error = ETIMEDOUT; } else { mpbogus.status = 0; error = ENXIO; log(LOG_ERR, "mp%d: start download: unknown status %x", unit, mb->mb_status); } bzero((caddr_t)mb->mb_port, sizeof (mb->mb_port)); break; case MPIORESETBOARD: s = spl8(); if (mb->mb_imokclk) mb->mb_imokclk = 0; *(u_short *)mpinfo[unit]->ui_addr = 0x100; if (mb->mb_status == MP_DLOPEN || mb->mb_status == MP_DLDONE) { mpdlerr = MP_DLERROR; dl->mpdl_status = EVSTATUS_FREE; wakeup((caddr_t)&dl->mpdl_status); mpbogus.status = 0; } for (i = 0; i < MPMAXPORT; i++) { if (mb->mb_harderr || mb->mb_softerr) mperror(mb, i); mpcleanport(mb, i); mb->mb_proto[i] = MPPROTO_UNUSED; } mb->mb_status = 0; splx(s); break; default: error = EINVAL; break; } return (error); } mpccinit(unit) int unit; { register struct mblok *mb = mp_softc[unit].ms_mb; register struct his *his; register int i, j; mb->mb_status = MP_DLDONE; mb->mb_ivec = mp_softc[unit].ms_ivec; mb->mb_magic = MPMAGIC; /* Init host interface structure */ his = &mb->mb_hostint; his->semaphore = MPSEMA_AVAILABLE; for (i = 0; i < NMPPROTO; i++) for (j = 0; j < MPMAXPORT; j++) { his->proto[i].inbdone[j] = MPPORT_EOL; his->proto[i].outbdone[j] = MPPORT_EOL; } mb->mb_unit = unit; } mpdlintr(mpcc) int mpcc; { register struct mblok *mb; register struct mpdl *dl; mb = mp_softc[mpcc].ms_mb; if (mb == 0) { printf("mp%d: stray download interrupt\n", mpcc); return; } dl = &mb->mb_dl; switch (mb->mb_status) { case MP_DLOPEN: if (dl->mpdl_status != EVSTATUS_DONE) mpdlerr = MP_DLERROR; dl->mpdl_status = EVSTATUS_FREE; wakeup((caddr_t)&dl->mpdl_status); return; case MP_DLPEND: mb->mb_status = MP_DLOPEN; wakeup((caddr_t)&mb->mb_status); /* fall thru... */ case MP_DLTIME: return; case MP_OPOPEN: if (mb->mb_imokclk) mb->mb_imokclk = 0; mb->mb_nointcnt = 0; /* reset no interrupt count */ mb->mb_hostint.imok = MPIMOK_DEAD; mb->mb_imokclk = (caddr_t)1; break; default: log(LOG_ERR, "mp%d: mpdlintr, status %x\n", mpcc, mb->mb_status); break; } } mpdltimeout(mp) struct mblok *mp; { mp->mb_status = MP_DLTIME; wakeup((caddr_t)&mp->mb_status); } /* * Wait for a transfer to complete or a timeout to occur. */ mpdlwait(dl) register struct mpdl *dl; { int s, error = 0; s = spl8(); dl->mpdl_status = EVSTATUS_GO; while (dl->mpdl_status != EVSTATUS_FREE) { sleep((caddr_t)&dl->mpdl_status, PZERO+1); if (mpdlerr == MP_DLERROR) error = EIO; } splx(s); return (error); } #endif