| 1 | /* |
| 2 | * Copyright (c) 1988 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that this notice is preserved and that due credit is given |
| 7 | * to the University of California at Berkeley. The name of the University |
| 8 | * may not be used to endorse or promote products derived from this |
| 9 | * software without specific prior written permission. This software |
| 10 | * is provided ``as is'' without express or implied warranty. |
| 11 | * |
| 12 | * @(#)mp.c 7.2 (Berkeley) %G% |
| 13 | */ |
| 14 | |
| 15 | #include "mp.h" |
| 16 | #if NMP > 0 |
| 17 | /* |
| 18 | * Multi Protocol Communications Controller (MPCC). |
| 19 | * Asynchronous Terminal Protocol Support. |
| 20 | */ |
| 21 | #include "param.h" |
| 22 | #include "ioctl.h" |
| 23 | #include "tty.h" |
| 24 | #include "dir.h" |
| 25 | #include "user.h" |
| 26 | #include "map.h" |
| 27 | #include "buf.h" |
| 28 | #include "conf.h" |
| 29 | #include "file.h" |
| 30 | #include "uio.h" |
| 31 | #include "errno.h" |
| 32 | #include "syslog.h" |
| 33 | #include "vmmac.h" |
| 34 | #include "kernel.h" |
| 35 | #include "clist.h" |
| 36 | |
| 37 | #include "../machine/pte.h" |
| 38 | #include "../machine/mtpr.h" |
| 39 | |
| 40 | #include "../tahoevba/vbavar.h" |
| 41 | #include "../tahoevba/mpreg.h" |
| 42 | |
| 43 | #define MPCHUNK 16 |
| 44 | #define MPPORT(n) ((n) & 0xf) |
| 45 | #define MPUNIT(n) ((n) >> 4) |
| 46 | |
| 47 | /* |
| 48 | * Driver information for auto-configuration stuff. |
| 49 | */ |
| 50 | int mpprobe(), mpattach(), mpintr(); |
| 51 | struct vba_device *mpinfo[NMP]; |
| 52 | long mpstd[] = { 0 }; |
| 53 | struct vba_driver mpdriver = |
| 54 | { mpprobe, 0, mpattach, 0, mpstd, "mp", mpinfo }; |
| 55 | |
| 56 | int mpstart(); |
| 57 | struct mpevent *mpparam(); |
| 58 | struct mpevent *mp_getevent(); |
| 59 | |
| 60 | /* |
| 61 | * The following structure is needed to deal with mpcc's convoluted |
| 62 | * method for locating it's mblok structures (hold your stomach). |
| 63 | * When an mpcc is reset at boot time it searches host memory |
| 64 | * looking for a string that says ``ThIs Is MpCc''. The mpcc |
| 65 | * then reads the structure to locate the pointer to it's mblok |
| 66 | * structure (you can wretch now). |
| 67 | */ |
| 68 | struct mpbogus { |
| 69 | char s[12]; /* `ThIs Is MpCc'' */ |
| 70 | u_char status; |
| 71 | u_char unused; |
| 72 | u_short magic; |
| 73 | struct mblok *mb; |
| 74 | struct mblok *mbloks[NMP]; /* can support at most 16 mpcc's */ |
| 75 | } mpbogus = { 'T','h','I','s',' ','I','s',' ','M','p','C','c' }; |
| 76 | |
| 77 | /* |
| 78 | * Software state per unit. |
| 79 | */ |
| 80 | struct mpsoftc { |
| 81 | u_int ms_ivec; /* interrupt vector */ |
| 82 | u_int ms_softCAR; /* software carrier for async */ |
| 83 | struct mblok *ms_mb; /* mpcc status area */ |
| 84 | struct vb_buf ms_buf; /* vba resources for ms_mb */ |
| 85 | struct hxmtl ms_hxl[MPMAXPORT];/* host transmit list */ |
| 86 | struct asyncparam ms_async[MPMAXPORT][MPINSET];/* async structs */ |
| 87 | char ms_cbuf[MPMAXPORT][MPOUTSET][CBSIZE];/* input character buffers */ |
| 88 | } mp_softc[NMP]; |
| 89 | |
| 90 | struct tty mp_tty[NMP*MPCHUNK]; |
| 91 | #ifndef lint |
| 92 | int nmp = NMP*MPCHUNK; |
| 93 | #endif |
| 94 | |
| 95 | int ttrstrt(); |
| 96 | |
| 97 | mpprobe(reg, vi) |
| 98 | caddr_t reg; |
| 99 | struct vba_device *vi; |
| 100 | { |
| 101 | register int br, cvec; |
| 102 | register struct mpsoftc *ms; |
| 103 | |
| 104 | #ifdef lint |
| 105 | br = 0; cvec = br; br = cvec; |
| 106 | mpintr(0); |
| 107 | mpdlintr(0); |
| 108 | #endif |
| 109 | if (badaddr(reg, 2)) |
| 110 | return (0); |
| 111 | ms = &mp_softc[vi->ui_unit]; |
| 112 | /* |
| 113 | * Allocate page tables and mblok |
| 114 | * structure (mblok in non-cached memory). |
| 115 | */ |
| 116 | if (vbainit(&ms->ms_buf, sizeof (struct mblok), VB_32BIT) == 0) { |
| 117 | printf("mp%d: vbainit failed\n", vi->ui_unit); |
| 118 | return (0); |
| 119 | } |
| 120 | ms->ms_mb = (struct mblok *)ms->ms_buf.vb_rawbuf; |
| 121 | ms->ms_ivec = MPINTRBASE + 2*vi->ui_unit; /* XXX */ |
| 122 | br = 0x14, cvec = ms->ms_ivec; /* XXX */ |
| 123 | return (sizeof (*reg)); |
| 124 | } |
| 125 | |
| 126 | mpattach(vi) |
| 127 | register struct vba_device *vi; |
| 128 | { |
| 129 | register struct mpsoftc *ms = &mp_softc[vi->ui_unit]; |
| 130 | |
| 131 | ms->ms_softCAR = vi->ui_flags; |
| 132 | /* |
| 133 | * Setup pointer to mblok, initialize bogus |
| 134 | * status block used by mpcc to locate the pointer |
| 135 | * and then poke the mpcc to get it to search host |
| 136 | * memory to find mblok pointer. |
| 137 | */ |
| 138 | mpbogus.mbloks[vi->ui_unit] = (struct mblok *)ms->ms_buf.vb_physbuf; |
| 139 | *(short *)vi->ui_addr = 0x100; /* magic */ |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Open an mpcc port. |
| 144 | */ |
| 145 | /* ARGSUSED */ |
| 146 | mpopen(dev, mode) |
| 147 | dev_t dev; |
| 148 | { |
| 149 | register struct tty *tp; |
| 150 | register struct mpsoftc *ms; |
| 151 | int error, s, port, unit, mpu; |
| 152 | struct vba_device *vi; |
| 153 | struct mpport *mp; |
| 154 | struct mpevent *ev; |
| 155 | |
| 156 | unit = minor(dev); |
| 157 | mpu = MPUNIT(unit); |
| 158 | if (mpu >= NMP || (vi = mpinfo[mpu]) == 0 || vi->ui_alive == 0) |
| 159 | return (ENXIO); |
| 160 | tp = &mp_tty[unit]; |
| 161 | if (tp->t_state & TS_XCLUDE && u.u_uid != 0) |
| 162 | return (EBUSY); |
| 163 | ms = &mp_softc[mpu]; |
| 164 | port = MPPORT(unit); |
| 165 | if (ms->ms_mb->mb_proto[port] != MPPROTO_ASYNC || |
| 166 | ms->ms_mb->mb_status != MP_OPOPEN) |
| 167 | return (ENXIO); |
| 168 | mp = &ms->ms_mb->mb_port[port]; /* host mpcc struct */ |
| 169 | s = spl8(); |
| 170 | while (mp->mp_flags & MP_PROGRESS) |
| 171 | sleep((caddr_t)&tp->t_canq, TTIPRI); |
| 172 | while (tp->t_state & TS_WOPEN) |
| 173 | sleep((caddr_t)&tp->t_canq, TTIPRI); |
| 174 | if (tp->t_state & TS_ISOPEN) { |
| 175 | splx(s); |
| 176 | return (0); |
| 177 | } |
| 178 | tp->t_state |= TS_WOPEN; |
| 179 | tp->t_addr = (caddr_t)ms; |
| 180 | tp->t_oproc = mpstart; |
| 181 | tp->t_dev = dev; |
| 182 | ttychars(tp); |
| 183 | if (tp->t_ispeed == 0) { |
| 184 | tp->t_ispeed = B9600; |
| 185 | tp->t_ospeed = B9600; |
| 186 | tp->t_flags |= ODDP|EVENP|ECHO; |
| 187 | } |
| 188 | /* |
| 189 | * Initialize port state: init MPCC interface |
| 190 | * structures for port and setup modem control. |
| 191 | */ |
| 192 | mp->mp_proto = MPPROTO_ASYNC; /* XXX */ |
| 193 | error = mpportinit(ms, mp, port); |
| 194 | if (error) |
| 195 | goto bad; |
| 196 | ev = mpparam(unit); |
| 197 | if (ev == 0) { |
| 198 | error = ENOBUFS; |
| 199 | goto bad; |
| 200 | } |
| 201 | mpcmd(ev, EVCMD_OPEN, 0, ms->ms_mb, port); |
| 202 | while ((tp->t_state & TS_CARR_ON) == 0) |
| 203 | sleep((caddr_t)&tp->t_rawq, TTIPRI); |
| 204 | error = mpmodem(unit, MMOD_ON); |
| 205 | if (error) |
| 206 | goto bad; |
| 207 | while ((tp->t_state & TS_CARR_ON) == 0) |
| 208 | sleep((caddr_t)&tp->t_rawq, TTIPRI); |
| 209 | error = (*linesw[tp->t_line].l_open)(dev,tp); |
| 210 | done: |
| 211 | splx(s); |
| 212 | /* wakeup anyone waiting for open to complete */ |
| 213 | wakeup((caddr_t)&tp->t_canq); |
| 214 | |
| 215 | return (error); |
| 216 | bad: |
| 217 | tp->t_state &= ~TS_WOPEN; |
| 218 | goto done; |
| 219 | } |
| 220 | |
| 221 | /* |
| 222 | * Close an mpcc port. |
| 223 | */ |
| 224 | /* ARGSUSED */ |
| 225 | mpclose(dev, flag) |
| 226 | dev_t dev; |
| 227 | { |
| 228 | register struct tty *tp; |
| 229 | register struct mpport *mp; |
| 230 | register struct mpevent *ev; |
| 231 | int s, port, unit, error; |
| 232 | struct mblok *mb; |
| 233 | |
| 234 | unit = minor(dev); |
| 235 | tp = &mp_tty[unit]; |
| 236 | port = MPPORT(unit); |
| 237 | mb = mp_softc[MPUNIT(unit)].ms_mb; |
| 238 | mp = &mb->mb_port[port]; |
| 239 | s = spl8(); |
| 240 | if (mp->mp_flags & MP_PROGRESS) { /* close in progress */ |
| 241 | if (mp->mp_flags & MP_REMBSY) { |
| 242 | mp->mp_flags &= ~MP_REMBSY; |
| 243 | splx(s); |
| 244 | return (0); |
| 245 | } |
| 246 | while (mp->mp_flags & MP_PROGRESS) |
| 247 | sleep((caddr_t)&tp->t_canq,TTIPRI); |
| 248 | } |
| 249 | error = 0; |
| 250 | mp->mp_flags |= MP_PROGRESS; |
| 251 | (*linesw[tp->t_line].l_close)(tp); |
| 252 | if (tp->t_state & TS_HUPCLS || (tp->t_state & TS_ISOPEN) == 0) |
| 253 | if (error = mpmodem(unit, MMOD_OFF)) { |
| 254 | mp->mp_flags &= ~MP_PROGRESS; |
| 255 | goto out; |
| 256 | } |
| 257 | while (tp->t_state & TS_FLUSH) /* ??? */ |
| 258 | sleep((caddr_t)&tp->t_state, TTOPRI); /* ??? */ |
| 259 | ttyclose(tp); |
| 260 | ev = mp_getevent(mp, unit); |
| 261 | if (ev == 0) { |
| 262 | error = ENOBUFS; |
| 263 | goto out; |
| 264 | } |
| 265 | mpcmd(ev, EVCMD_CLOSE, 0, mb, port); |
| 266 | out: |
| 267 | if (mp->mp_flags & MP_REMBSY) |
| 268 | mpclean(mb, port); |
| 269 | splx(s); |
| 270 | return (error); |
| 271 | } |
| 272 | |
| 273 | /* |
| 274 | * Read from an mpcc port. |
| 275 | */ |
| 276 | mpread(dev, uio) |
| 277 | dev_t dev; |
| 278 | struct uio *uio; |
| 279 | { |
| 280 | struct tty *tp; |
| 281 | |
| 282 | tp = &mp_tty[minor(dev)]; |
| 283 | return ((*linesw[tp->t_line].l_read)(tp, uio)); |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * Write to an mpcc port. |
| 288 | */ |
| 289 | mpwrite(dev, uio) |
| 290 | dev_t dev; |
| 291 | struct uio *uio; |
| 292 | { |
| 293 | struct tty *tp; |
| 294 | |
| 295 | tp = &mp_tty[minor(dev)]; |
| 296 | return ((*linesw[tp->t_line].l_write)(tp, uio)); |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | * Ioctl for a mpcc port |
| 301 | */ |
| 302 | mpioctl(dev, cmd, data, flag) |
| 303 | dev_t dev; |
| 304 | caddr_t data; |
| 305 | { |
| 306 | register struct tty *tp; |
| 307 | register struct mpsoftc *ms; |
| 308 | register struct mpevent *ev; |
| 309 | register struct mpport *mp; |
| 310 | int s, port, error, unit; |
| 311 | struct mblok *mb; |
| 312 | |
| 313 | unit = minor(dev); |
| 314 | tp = &mp_tty[unit]; |
| 315 | ms = &mp_softc[MPUNIT(unit)]; |
| 316 | mb = ms->ms_mb; |
| 317 | error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag); |
| 318 | if (error >= 0) |
| 319 | return (error); |
| 320 | error = ttioctl(tp, cmd, data, flag); |
| 321 | if (error >= 0) { |
| 322 | if (cmd == TIOCSETP || cmd == TIOCSETN || cmd == TIOCLBIS || |
| 323 | cmd == TIOCLBIC || cmd == TIOCLSET || cmd == TIOCSETC) { |
| 324 | ev = mpparam(unit); |
| 325 | if (ev == 0) |
| 326 | error = ENOBUFS; |
| 327 | else |
| 328 | mpcmd(ev, EVCMD_IOCTL, A_CHGALL, mb, |
| 329 | MPPORT(unit)); |
| 330 | } |
| 331 | return (error); |
| 332 | } |
| 333 | switch (cmd) { |
| 334 | case TIOCSBRK: /* send break */ |
| 335 | case TIOCCBRK: /* clear break */ |
| 336 | port = MPPORT(unit); |
| 337 | mp = &mb->mb_port[port]; |
| 338 | s = spl8(); |
| 339 | ev = mp_getevent(mp, unit); |
| 340 | if (ev) |
| 341 | mpcmd(ev, EVCMD_IOCTL, |
| 342 | (cmd == TIOCSBRK ? A_BRKON : A_BRKOFF), |
| 343 | mb, port); |
| 344 | else |
| 345 | error = ENOBUFS; |
| 346 | splx(s); |
| 347 | break; |
| 348 | case TIOCSDTR: /* set dtr control line */ |
| 349 | break; |
| 350 | case TIOCCDTR: /* clear dtr control line */ |
| 351 | break; |
| 352 | default: |
| 353 | error = ENOTTY; |
| 354 | break; |
| 355 | } |
| 356 | return (error); |
| 357 | } |
| 358 | |
| 359 | struct mpevent * |
| 360 | mpparam(unit) |
| 361 | int unit; |
| 362 | { |
| 363 | register struct mpevent *ev; |
| 364 | register struct mpport *mp; |
| 365 | register struct tty *tp; |
| 366 | struct mblok *mb; |
| 367 | struct mpsoftc *ms; |
| 368 | register struct asyncparam *asp; |
| 369 | int port; |
| 370 | |
| 371 | ms = &mp_softc[MPUNIT(unit)]; |
| 372 | mb = ms->ms_mb; |
| 373 | port = MPPORT(unit); |
| 374 | mp = &mb->mb_port[port]; |
| 375 | ev = mp_getevent(mp, unit); /* XXX */ |
| 376 | if (ev == 0) |
| 377 | return (ev); |
| 378 | tp = &mp_tty[unit]; |
| 379 | /* YUCK */ |
| 380 | asp = &ms->ms_async[port][mp->mp_on?mp->mp_on-1:MPINSET-1]; |
| 381 | asp->ap_xon = (u_char)tp->t_startc; |
| 382 | asp->ap_xoff = (u_char)tp->t_stopc; |
| 383 | if ((tp->t_flags & RAW) || (tp->t_stopc == -1) || (tp->t_startc == -1)) |
| 384 | asp->ap_xena = MPA_DIS; |
| 385 | else |
| 386 | asp->ap_xena = MPA_ENA; |
| 387 | asp->ap_xany = ((tp->t_flags & DECCTQ) ? MPA_DIS : MPA_ENA); |
| 388 | #ifdef notnow |
| 389 | if (tp->t_flags & (RAW|LITOUT|PASS8)) { |
| 390 | #endif |
| 391 | asp->ap_data = MPCHAR_8; |
| 392 | asp->ap_parity = MPPAR_NONE; |
| 393 | #ifdef notnow |
| 394 | } else { |
| 395 | asp->ap_data = MPCHAR_7; |
| 396 | if ((tp->t_flags & (EVENP|ODDP)) == ODDP) |
| 397 | asp->ap_parity = MPPAR_ODD; |
| 398 | else |
| 399 | asp->ap_parity = MPPAR_EVEN; |
| 400 | } |
| 401 | #endif |
| 402 | if (tp->t_ospeed == B110) |
| 403 | asp->ap_stop = MPSTOP_2; |
| 404 | else |
| 405 | asp->ap_stop = MPSTOP_1; |
| 406 | if (tp->t_ospeed == EXTA || tp->t_ospeed == EXTB) |
| 407 | asp->ap_baud = M19200; |
| 408 | else |
| 409 | asp->ap_baud = tp->t_ospeed; |
| 410 | asp->ap_loop = MPA_DIS; /* disable loopback */ |
| 411 | asp->ap_rtimer = A_RCVTIM; /* default receive timer */ |
| 412 | if (ms->ms_softCAR & (1<<port)) |
| 413 | setm(&asp->ap_modem, A_DTR, ASSERT); |
| 414 | else |
| 415 | setm(&asp->ap_modem, A_DTR, AUTO); |
| 416 | seti(&asp->ap_intena, A_DCD); |
| 417 | return (ev); |
| 418 | } |
| 419 | |
| 420 | mpstart(tp) |
| 421 | register struct tty *tp; |
| 422 | { |
| 423 | register struct mpevent *ev; |
| 424 | register struct mpport *mp; |
| 425 | struct mblok *mb; |
| 426 | struct mpsoftc *ms; |
| 427 | int port, unit, xcnt, n, s, i; |
| 428 | struct hxmtl *hxp; |
| 429 | struct clist outq; |
| 430 | |
| 431 | s = spl8(); |
| 432 | unit = minor(tp->t_dev); |
| 433 | ms = &mp_softc[MPUNIT(unit)]; |
| 434 | mb = ms->ms_mb; |
| 435 | port = MPPORT(unit); |
| 436 | mp = &mb->mb_port[port]; |
| 437 | hxp = &ms->ms_hxl[port]; |
| 438 | xcnt = 0; |
| 439 | outq = tp->t_outq; |
| 440 | for (i = 0; i < MPXMIT; i++) { |
| 441 | if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) |
| 442 | break; |
| 443 | if (outq.c_cc <= TTLOWAT(tp)) { |
| 444 | if (tp->t_state & TS_ASLEEP) { |
| 445 | tp->t_state &= ~TS_ASLEEP; |
| 446 | wakeup((caddr_t)&tp->t_outq); |
| 447 | } |
| 448 | if (tp->t_wsel) { |
| 449 | selwakeup(tp->t_wsel, tp->t_state & TS_WCOLL); |
| 450 | tp->t_wsel = 0; |
| 451 | tp->t_state &= ~TS_WCOLL; |
| 452 | } |
| 453 | } |
| 454 | if (outq.c_cc == 0) |
| 455 | break; |
| 456 | /* |
| 457 | * If we're not currently busy outputting, |
| 458 | * and there is data to be output, set up |
| 459 | * port transmit structure to send to mpcc. |
| 460 | */ |
| 461 | if (tp->t_flags & (RAW|LITOUT)) |
| 462 | n = ndqb(&outq, 0); |
| 463 | else { |
| 464 | n = ndqb(&outq, 0200); |
| 465 | if (n == 0) { |
| 466 | n = getc(&outq); |
| 467 | timeout(ttrstrt, (caddr_t)tp, (n&0177)+6); |
| 468 | tp->t_state |= TS_TIMEOUT; |
| 469 | break; |
| 470 | } |
| 471 | } |
| 472 | hxp->dblock[i] = (caddr_t)kvtophys(outq.c_cf); |
| 473 | hxp->size[i] = n; |
| 474 | xcnt++; /* count of xmts to send */ |
| 475 | ndadvance(&outq, n); |
| 476 | } |
| 477 | /* |
| 478 | * If data to send, poke mpcc. |
| 479 | */ |
| 480 | if (xcnt) { |
| 481 | ev = mp_getevent(mp, unit); |
| 482 | if (ev == 0) { |
| 483 | tp->t_state &= ~(TS_BUSY|TS_TIMEOUT); |
| 484 | } else { |
| 485 | tp->t_state |= TS_BUSY; |
| 486 | ev->ev_count = xcnt; |
| 487 | mpcmd(ev, EVCMD_WRITE, 0, mb, MPPORT(unit)); |
| 488 | } |
| 489 | } |
| 490 | splx(s); |
| 491 | } |
| 492 | |
| 493 | /* |
| 494 | * Advance cc bytes from q but don't free memory. |
| 495 | */ |
| 496 | ndadvance(q, cc) |
| 497 | register struct clist *q; |
| 498 | register cc; |
| 499 | { |
| 500 | register struct cblock *bp; |
| 501 | char *end; |
| 502 | int rem, s; |
| 503 | |
| 504 | s = spltty(); |
| 505 | if (q->c_cc <= 0) |
| 506 | goto out; |
| 507 | while (cc>0 && q->c_cc) { |
| 508 | bp = (struct cblock *)((int)q->c_cf & ~CROUND); |
| 509 | if ((int)bp == (((int)q->c_cl-1) & ~CROUND)) { |
| 510 | end = q->c_cl; |
| 511 | } else { |
| 512 | end = (char *)((int)bp + sizeof (struct cblock)); |
| 513 | } |
| 514 | rem = end - q->c_cf; |
| 515 | if (cc >= rem) { |
| 516 | cc -= rem; |
| 517 | q->c_cc -= rem; |
| 518 | q->c_cf = bp->c_next->c_info; |
| 519 | } else { |
| 520 | q->c_cc -= cc; |
| 521 | q->c_cf += cc; |
| 522 | break; |
| 523 | } |
| 524 | } |
| 525 | if (q->c_cc <= 0) { |
| 526 | q->c_cf = q->c_cl = NULL; |
| 527 | q->c_cc = 0; |
| 528 | } |
| 529 | out: |
| 530 | splx(s); |
| 531 | } |
| 532 | |
| 533 | /* |
| 534 | * Stop output on a line, e.g. for ^S/^Q or output flush. |
| 535 | */ |
| 536 | /* ARGSUSED */ |
| 537 | mpstop(tp, rw) |
| 538 | register struct tty *tp; |
| 539 | int rw; |
| 540 | { |
| 541 | int s; |
| 542 | |
| 543 | s = spl8(); |
| 544 | /* XXX: DISABLE TRANSMITTER */ |
| 545 | if (tp->t_state & TS_BUSY) { |
| 546 | if ((tp->t_state & TS_TTSTOP) == 0) |
| 547 | tp->t_state |= TS_FLUSH; |
| 548 | } |
| 549 | splx(s); |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * Initialize an async port's MPCC state. |
| 554 | */ |
| 555 | mpportinit(ms, mp, port) |
| 556 | register struct mpsoftc *ms; |
| 557 | register struct mpport *mp; |
| 558 | int port; |
| 559 | { |
| 560 | register struct mpevent *ev; |
| 561 | register int i; |
| 562 | caddr_t ptr; |
| 563 | |
| 564 | mp->mp_on = mp->mp_off = 0; |
| 565 | mp->mp_nextrcv = 0; |
| 566 | mp->mp_flags = 0; |
| 567 | ev = &mp->mp_recvq[0]; |
| 568 | for (i = 0; ev < &mp->mp_recvq[MPINSET]; ev++, i++) { |
| 569 | ev->ev_status = EVSTATUS_FREE; |
| 570 | ev->ev_cmd = 0; |
| 571 | ev->ev_opts = 0; |
| 572 | ev->ev_error = 0; |
| 573 | ev->ev_flags = 0; |
| 574 | ev->ev_count = 0; |
| 575 | ev->ev_un.hxl = (struct hxmtl *) kvtophys(&ms->ms_hxl[port]); |
| 576 | ev->ev_params = (caddr_t) kvtophys(&ms->ms_async[port][i]); |
| 577 | } |
| 578 | ev = &mp->mp_sendq[0]; |
| 579 | for (i = 0; ev < &mp->mp_sendq[MPOUTSET]; ev++, i++) { |
| 580 | /* init so that L2 can't send any events */ |
| 581 | /* to host until open has completed */ |
| 582 | ev->ev_status = EVSTATUS_FREE; |
| 583 | ev->ev_cmd = 0; |
| 584 | ev->ev_error = 0; |
| 585 | ev->ev_flags = 0; |
| 586 | ev->ev_count = 0; |
| 587 | ptr = (caddr_t) &ms->ms_cbuf[port][i][0]; |
| 588 | ev->ev_un.rcvblk = (u_char *)kvtophys(ptr); |
| 589 | ev->ev_params = (caddr_t) kvtophys(ptr); |
| 590 | } |
| 591 | return (0); |
| 592 | } |
| 593 | |
| 594 | /* |
| 595 | * Send an event to an mpcc. |
| 596 | */ |
| 597 | mpcmd(ev, cmd, flags, mb, port) |
| 598 | register struct mpevent *ev; |
| 599 | struct mblok *mb; |
| 600 | { |
| 601 | int s; |
| 602 | |
| 603 | s = spl8(); |
| 604 | /* move host values to inbound entry */ |
| 605 | ev->ev_cmd = cmd; |
| 606 | ev->ev_opts = flags; |
| 607 | /* show event ready for mpcc */ |
| 608 | ev->ev_status = EVSTATUS_GO; |
| 609 | mpintmpcc(mb, port); |
| 610 | splx(s); |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | * Return the next available event entry for the indicated port. |
| 615 | */ |
| 616 | struct mpevent * |
| 617 | mp_getevent(mp, unit) |
| 618 | register struct mpport *mp; |
| 619 | int unit; |
| 620 | { |
| 621 | register struct mpevent *ev; |
| 622 | int i, s; |
| 623 | |
| 624 | s = spl8(); |
| 625 | ev = &mp->mp_recvq[mp->mp_on]; |
| 626 | if (ev->ev_status != EVSTATUS_FREE) |
| 627 | goto bad; |
| 628 | /* |
| 629 | * If not a close request, verify one extra |
| 630 | * event is available for closing the port. |
| 631 | */ |
| 632 | if ((mp->mp_flags & MP_PROGRESS) == 0) { |
| 633 | if ((i = mp->mp_on + 1) >= MPINSET) |
| 634 | i = 0; |
| 635 | if (mp->mp_recvq[i].ev_status != EVSTATUS_FREE) |
| 636 | goto bad; |
| 637 | } |
| 638 | /* init inbound fields marking this entry as busy */ |
| 639 | ev->ev_error = 0; |
| 640 | ev->ev_flags = 0; |
| 641 | ev->ev_count = 0; |
| 642 | ev->ev_status = EVSTATUS_BUSY; |
| 643 | /* adjust pointer to next available inbound entry */ |
| 644 | adjptr(mp->mp_on, MPINSET); |
| 645 | splx(s); |
| 646 | return (ev); |
| 647 | bad: |
| 648 | splx(s); |
| 649 | log(LOG_ERR, "mp%d: port%d, out of events", MPUNIT(unit), MPPORT(unit)); |
| 650 | return ((struct mpevent *)0); |
| 651 | } |
| 652 | |
| 653 | mpmodem(unit, flag) |
| 654 | int unit, flag; |
| 655 | { |
| 656 | struct mpsoftc *ms = &mp_softc[MPUNIT(unit)]; |
| 657 | int port = MPPORT(unit); |
| 658 | register struct mpport *mp; |
| 659 | register struct mpevent *ev; |
| 660 | register struct asyncparam *asp; |
| 661 | |
| 662 | mp = &ms->ms_mb->mb_port[port]; |
| 663 | ev = mp_getevent(mp, unit); |
| 664 | if (ev == 0) |
| 665 | return (ENOBUFS); |
| 666 | /* YUCK */ |
| 667 | asp = &ms->ms_async[port][mp->mp_on?mp->mp_on-1:MPINSET-1]; |
| 668 | if (flag == MMOD_ON) { |
| 669 | if (ms->ms_softCAR & (1 << port)) |
| 670 | setm(&asp->ap_modem, A_DTR, ASSERT); |
| 671 | else |
| 672 | setm(&asp->ap_modem, A_DTR, AUTO); |
| 673 | seti(&asp->ap_intena, A_DCD); |
| 674 | } else { |
| 675 | setm(&asp->ap_modem, 0, DROP); |
| 676 | seti(&asp->ap_intena, 0); |
| 677 | } |
| 678 | mpcmd(ev, EVCMD_IOCTL, A_MDMCHG, ms->ms_mb, port); |
| 679 | return (0); |
| 680 | } |
| 681 | |
| 682 | /* |
| 683 | * Set up the modem control structure according to mask. |
| 684 | * Each set bit in the mask means assert the corresponding |
| 685 | * modem control line, otherwise, it will be dropped. |
| 686 | * RTS is special since it can either be asserted, dropped |
| 687 | * or put in auto mode for auto modem control. |
| 688 | */ |
| 689 | static |
| 690 | setm(mc, mask, rts) |
| 691 | register struct mdmctl *mc; |
| 692 | register int mask; |
| 693 | { |
| 694 | |
| 695 | mc->mc_rngdsr = (mask & A_RNGDSR) ? ASSERT : DROP; |
| 696 | mc->mc_rate = (mask & A_RATE) ? ASSERT : DROP; |
| 697 | mc->mc_dcd = (mask & A_DCD) ? ASSERT : DROP; |
| 698 | mc->mc_sectx = (mask & A_SECTX) ? ASSERT : DROP; |
| 699 | mc->mc_cts = (mask & A_CTS) ? ASSERT : DROP; |
| 700 | mc->mc_secrx = (mask & A_SECRX) ? ASSERT : DROP; |
| 701 | mc->mc_dtr = (mask & A_DTR) ? ASSERT : DROP; |
| 702 | mc->mc_rts = rts; |
| 703 | } |
| 704 | |
| 705 | /* |
| 706 | * Set up the status change enable field from mask. |
| 707 | * When a signal is enabled in this structure and |
| 708 | * and a change in state on a corresponding modem |
| 709 | * control line occurs, a status change event will |
| 710 | * be delivered to the host. |
| 711 | */ |
| 712 | static |
| 713 | seti(mc, mask) |
| 714 | register struct mdmctl *mc; |
| 715 | register int mask; |
| 716 | { |
| 717 | |
| 718 | mc->mc_rngdsr = (mask & A_RNGDSR) ? MDM_ON : MDM_OFF; |
| 719 | mc->mc_rate = (mask & A_RATE) ? MDM_ON : MDM_OFF; |
| 720 | mc->mc_dcd = (mask & A_DCD) ? MDM_ON : MDM_OFF; |
| 721 | mc->mc_sectx = (mask & A_SECTX) ? MDM_ON : MDM_OFF; |
| 722 | mc->mc_cts = (mask & A_CTS) ? MDM_ON : MDM_OFF; |
| 723 | mc->mc_secrx = (mask & A_SECRX) ? MDM_ON : MDM_OFF; |
| 724 | mc->mc_dtr = (mask & A_DTR) ? MDM_ON : MDM_OFF; |
| 725 | mc->mc_rts = (mask & A_RTS) ? MDM_ON : MDM_OFF; |
| 726 | } |
| 727 | |
| 728 | mpcleanport(mb, port) |
| 729 | struct mblok *mb; |
| 730 | int port; |
| 731 | { |
| 732 | register struct mpport *mp; |
| 733 | register struct tty *tp; |
| 734 | |
| 735 | mp = &mb->mb_port[port]; |
| 736 | if (mp->mp_proto == MPPROTO_ASYNC) { |
| 737 | mp->mp_flags = MP_REMBSY; |
| 738 | /* signal loss of carrier and close */ |
| 739 | tp = &mp_tty[mb->mb_unit*MPCHUNK+port]; |
| 740 | ttyflush(tp, FREAD|FWRITE); |
| 741 | (void) (*linesw[tp->t_line].l_modem)(tp, 0); |
| 742 | (void) mpclose(tp->t_dev, 0); |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | mpclean(mb, port) |
| 747 | register struct mblok *mb; |
| 748 | int port; |
| 749 | { |
| 750 | register struct mpport *mp; |
| 751 | register struct mpevent *ev; |
| 752 | register int i; |
| 753 | u_char list[2]; |
| 754 | int unit; |
| 755 | |
| 756 | mp = &mb->mb_port[port]; |
| 757 | unit = mb->mb_unit; |
| 758 | for (i = mp->mp_off; i != mp->mp_on; i = (i+1 % MPINSET)) { |
| 759 | ev = &mp->mp_recvq[i]; |
| 760 | ev->ev_error = ENXIO; |
| 761 | ev->ev_status = EVSTATUS_DONE; |
| 762 | } |
| 763 | list[0] = port, list[1] = MPPORT_EOL; |
| 764 | mpxintr(unit, list); |
| 765 | mprintr(unit, list); |
| 766 | /* Clear async for port */ |
| 767 | mp->mp_proto = MPPROTO_UNUSED; |
| 768 | mp->mp_flags = 0; |
| 769 | mp->mp_on = 0; |
| 770 | mp->mp_off = 0; |
| 771 | mp->mp_nextrcv = 0; |
| 772 | |
| 773 | mp_tty[unit*MPCHUNK + port].t_state = 0; |
| 774 | for (ev = &mp->mp_sendq[0]; ev < &mp->mp_sendq[MPOUTSET]; ev++) { |
| 775 | ev->ev_status = EVSTATUS_FREE; |
| 776 | ev->ev_cmd = 0; |
| 777 | ev->ev_error = 0; |
| 778 | ev->ev_un.rcvblk = 0; |
| 779 | ev->ev_params = 0; |
| 780 | } |
| 781 | for (ev = &mp->mp_recvq[0]; ev < &mp->mp_recvq[MPINSET]; ev++) { |
| 782 | ev->ev_status = EVSTATUS_FREE; |
| 783 | ev->ev_cmd = 0; |
| 784 | ev->ev_error = 0; |
| 785 | ev->ev_params = 0; |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | /* |
| 790 | * MPCC interrupt handler. |
| 791 | */ |
| 792 | mpintr(mpcc) |
| 793 | int mpcc; |
| 794 | { |
| 795 | register struct mblok *mb; |
| 796 | register struct his *his; |
| 797 | |
| 798 | mb = mp_softc[mpcc].ms_mb; |
| 799 | if (mb == 0) { |
| 800 | printf("mp%d: stray interrupt\n", mpcc); |
| 801 | return; |
| 802 | } |
| 803 | his = &mb->mb_hostint; |
| 804 | his->semaphore &= ~MPSEMA_AVAILABLE; |
| 805 | /* |
| 806 | * Check for events to be processed. |
| 807 | */ |
| 808 | if (his->proto[MPPROTO_ASYNC].outbdone[0] != MPPORT_EOL) |
| 809 | mprintr(mpcc, his->proto[MPPROTO_ASYNC].outbdone); |
| 810 | if (his->proto[MPPROTO_ASYNC].inbdone[0] != MPPORT_EOL) |
| 811 | mpxintr(mpcc, his->proto[MPPROTO_ASYNC].inbdone); |
| 812 | if (mb->mb_harderr || mb->mb_softerr) |
| 813 | mperror(mb, mpcc); |
| 814 | his->semaphore |= MPSEMA_AVAILABLE; |
| 815 | } |
| 816 | |
| 817 | /* |
| 818 | * Handler for processing completion of transmitted events. |
| 819 | */ |
| 820 | mpxintr(unit, list) |
| 821 | register u_char *list; |
| 822 | { |
| 823 | register struct mpport *mp; |
| 824 | register struct mpevent *ev; |
| 825 | register struct mblok *mb; |
| 826 | register struct tty *tp; |
| 827 | register struct asyncparam *ap; |
| 828 | struct mpsoftc *ms; |
| 829 | int port, i, j; |
| 830 | |
| 831 | ms = &mp_softc[unit]; |
| 832 | mb = mp_softc[unit].ms_mb; |
| 833 | for (j = 0; j < MPMAXPORT && ((port = *list++) != MPPORT_EOL); j++) { |
| 834 | /* |
| 835 | * Process each completed entry in the inbound queue. |
| 836 | */ |
| 837 | mp = &mb->mb_port[port]; |
| 838 | tp = &mp_tty[unit*MPCHUNK + port]; |
| 839 | #define nextevent(mp) &mp->mp_recvq[mp->mp_off] |
| 840 | ev = nextevent(mp); |
| 841 | for(; ev->ev_status & EVSTATUS_DONE; ev = nextevent(mp)) { |
| 842 | /* YUCK */ |
| 843 | ap = &ms->ms_async[port][mp->mp_off]; |
| 844 | mppurge((caddr_t)ap, (int)sizeof (*ap)); |
| 845 | switch (ev->ev_cmd) { |
| 846 | case EVCMD_OPEN: |
| 847 | /* |
| 848 | * Open completion, start all reads and |
| 849 | * assert modem status information. |
| 850 | */ |
| 851 | for (i = 0; i < MPOUTSET; i++) |
| 852 | mp->mp_sendq[i].ev_status = EVSTATUS_GO; |
| 853 | (*linesw[tp->t_line].l_modem) |
| 854 | (tp, ap->ap_modem.mc_dcd == ASSERT); |
| 855 | break; |
| 856 | case EVCMD_CLOSE: |
| 857 | /* |
| 858 | * Close completion, flush all pending |
| 859 | * transmissions, free resources, and |
| 860 | * cleanup mpcc port state. |
| 861 | */ |
| 862 | for (i = 0; i < MPOUTSET; i++) { |
| 863 | mp->mp_sendq[i].ev_status = |
| 864 | EVSTATUS_FREE; |
| 865 | mp->mp_sendq[i].ev_un.rcvblk = 0; |
| 866 | mp->mp_sendq[i].ev_params = 0; |
| 867 | } |
| 868 | tp->t_state &= ~TS_CARR_ON; |
| 869 | mp->mp_on = mp->mp_off = mp->mp_nextrcv = 0; |
| 870 | mp->mp_flags &= ~MP_PROGRESS; |
| 871 | mp->mp_proto = MPPROTO_UNUSED; |
| 872 | wakeup((caddr_t)&tp->t_canq); /* ??? */ |
| 873 | goto done; |
| 874 | case EVCMD_IOCTL: |
| 875 | /* |
| 876 | * Nothing to do, just pitch. |
| 877 | */ |
| 878 | break; |
| 879 | case EVCMD_WRITE: |
| 880 | /* |
| 881 | * Transmission completed, update tty |
| 882 | * state and restart output. |
| 883 | */ |
| 884 | tp->t_state &= ~TS_BUSY; |
| 885 | if (tp->t_state & TS_FLUSH) { |
| 886 | tp->t_state &= ~TS_FLUSH; |
| 887 | wakeup((caddr_t)&tp->t_state); |
| 888 | } else { |
| 889 | register int cc = 0, n; |
| 890 | struct hxmtl *hxp; |
| 891 | |
| 892 | hxp = &ms->ms_hxl[port]; |
| 893 | for(n = 0; n < ev->ev_count; n++) |
| 894 | cc += hxp->size[n]; |
| 895 | ndflush(&tp->t_outq, cc); |
| 896 | } |
| 897 | switch (ev->ev_error) { |
| 898 | case A_SIZERR: /*# error in xmt data size */ |
| 899 | mplog(unit, port, A_XSIZE, 0); |
| 900 | break; |
| 901 | case A_NXBERR: /*# no more xmt evt buffers */ |
| 902 | mplog(unit, port, A_NOXBUF, 0); |
| 903 | break; |
| 904 | } |
| 905 | mpstart(tp); |
| 906 | break; |
| 907 | default: |
| 908 | mplog(unit, port, A_INVCMD, (int)ev->ev_cmd); |
| 909 | break; |
| 910 | } |
| 911 | /* re-init all values in this entry */ |
| 912 | ev->ev_cmd = 0; |
| 913 | ev->ev_opts = 0; |
| 914 | ev->ev_error = 0; |
| 915 | ev->ev_flags = 0; |
| 916 | ev->ev_count = 0; |
| 917 | /* show this entry is available for use */ |
| 918 | ev->ev_status = EVSTATUS_FREE; |
| 919 | adjptr(mp->mp_off, MPINSET); |
| 920 | #undef nextevent |
| 921 | } |
| 922 | done: |
| 923 | ; |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | /* |
| 928 | * Handler for processing received events. |
| 929 | */ |
| 930 | mprintr(unit, list) |
| 931 | u_char *list; |
| 932 | { |
| 933 | register struct tty *tp; |
| 934 | register struct mpport *mp; |
| 935 | register struct mpevent *ev; |
| 936 | struct mblok *mb; |
| 937 | register int cc; |
| 938 | register char *cp; |
| 939 | struct mpsoftc *ms; |
| 940 | caddr_t ptr; |
| 941 | char *rcverr; |
| 942 | int port, i; |
| 943 | |
| 944 | ms = &mp_softc[unit]; |
| 945 | mb = mp_softc[unit].ms_mb; |
| 946 | for (i = 0; i < MPMAXPORT && (port = *list++) != MPPORT_EOL; i++) { |
| 947 | tp = &mp_tty[unit*MPCHUNK + port]; |
| 948 | mp = &mb->mb_port[port]; |
| 949 | ev = &mp->mp_sendq[mp->mp_nextrcv]; |
| 950 | while (ev->ev_status & EVSTATUS_DONE) { |
| 951 | if (ev->ev_cmd != EVCMD_READ && |
| 952 | ev->ev_cmd != EVCMD_STATUS) { |
| 953 | mplog(unit, port, "unexpected command", |
| 954 | (int)ev->ev_cmd); |
| 955 | goto next; |
| 956 | } |
| 957 | if (ev->ev_cmd == EVCMD_STATUS) { |
| 958 | /* |
| 959 | * Status change, look for carrier changes. |
| 960 | */ |
| 961 | if (ev->ev_opts == DCDASRT || |
| 962 | ev->ev_opts == DCDDROP) |
| 963 | (*linesw[tp->t_line].l_modem) |
| 964 | (tp, ev->ev_opts == DCDASRT); |
| 965 | else |
| 966 | mplog(unit, port, |
| 967 | "unexpect status command", |
| 968 | (int)ev->ev_opts); |
| 969 | goto next; |
| 970 | } |
| 971 | /* |
| 972 | * Process received data. |
| 973 | */ |
| 974 | if ((tp->t_state & (TS_ISOPEN|TS_WOPEN)) == 0) |
| 975 | goto next; |
| 976 | cc = ev->ev_count; |
| 977 | if (cc == 0) |
| 978 | goto next; |
| 979 | /* YUCK */ |
| 980 | cp = ms->ms_cbuf[port][mp->mp_nextrcv]; |
| 981 | mppurge(cp, CBSIZE); |
| 982 | while (cc-- > 0) { |
| 983 | /* |
| 984 | * A null character is inserted, potentially |
| 985 | * when a break or framing error occurs. If |
| 986 | * we're not in raw mode, substitute the |
| 987 | * interrupt character. |
| 988 | */ |
| 989 | if (*cp == 0 && |
| 990 | (ev->ev_error == BRKASRT || |
| 991 | ev->ev_error == FRAMERR)) |
| 992 | if ((tp->t_flags&RAW) == 0) |
| 993 | *cp = tp->t_intrc; |
| 994 | (*linesw[tp->t_line].l_rint)(*cp++, tp); |
| 995 | } |
| 996 | /* setup for next read */ |
| 997 | ptr = (caddr_t)&mp_softc[unit].ms_cbuf[port][mp->mp_nextrcv][0]; |
| 998 | ev->ev_un.rcvblk = (u_char *)kvtophys(ptr); |
| 999 | ev->ev_params = (caddr_t) kvtophys(ptr); |
| 1000 | switch(ev->ev_error) { |
| 1001 | case RCVDTA: /* Normal (good) rcv data */ |
| 1002 | /* do not report the following */ |
| 1003 | /* they are "normal" errors */ |
| 1004 | case FRAMERR: /* frame error */ |
| 1005 | case BRKASRT: /* Break condition */ |
| 1006 | case PARERR: /* parity error */ |
| 1007 | rcverr = (char *)0; |
| 1008 | break; |
| 1009 | case OVRNERR: /* Overrun error */ |
| 1010 | rcverr = "overrun error"; |
| 1011 | break; |
| 1012 | case OVFERR: /* Overflow error */ |
| 1013 | rcverr = "overflow error"; |
| 1014 | break; |
| 1015 | default: |
| 1016 | rcverr = "undefined rcv error"; |
| 1017 | } |
| 1018 | if (rcverr != (char *)0) |
| 1019 | mplog(unit, port, rcverr, (int)ev->ev_error); |
| 1020 | next: |
| 1021 | ev->ev_cmd = 0; |
| 1022 | ev->ev_opts = 0; |
| 1023 | ev->ev_error = 0; |
| 1024 | ev->ev_flags = 0; |
| 1025 | ev->ev_status = EVSTATUS_GO; /* start next read */ |
| 1026 | adjptr(mp->mp_nextrcv, MPOUTSET); |
| 1027 | ev = &mp->mp_sendq[mp->mp_nextrcv]; |
| 1028 | } |
| 1029 | } |
| 1030 | } |
| 1031 | |
| 1032 | /* |
| 1033 | * Log an mpcc diagnostic. |
| 1034 | */ |
| 1035 | mplog(unit, port, cp, flags) |
| 1036 | char *cp; |
| 1037 | { |
| 1038 | |
| 1039 | if (flags) |
| 1040 | log(LOG_ERR, "mp%d: port%d, %s (%d)\n", |
| 1041 | unit, port, cp, flags); |
| 1042 | else |
| 1043 | log(LOG_ERR, "mp%d: port%d, %s\n", unit, port, cp); |
| 1044 | } |
| 1045 | |
| 1046 | int MPHOSTINT = 1; |
| 1047 | |
| 1048 | mptimeint(mb) |
| 1049 | register struct mblok *mb; |
| 1050 | { |
| 1051 | |
| 1052 | mb->mb_mpintcnt = 0; |
| 1053 | mb->mb_mpintclk = (caddr_t)0; |
| 1054 | *(u_short *)mpinfo[mb->mb_unit]->ui_addr = 2; |
| 1055 | } |
| 1056 | |
| 1057 | /* |
| 1058 | * Interupt mpcc |
| 1059 | */ |
| 1060 | mpintmpcc(mb, port) |
| 1061 | register struct mblok *mb; |
| 1062 | { |
| 1063 | |
| 1064 | mb->mb_intr[port] |= MPSEMA_WORK; |
| 1065 | if (++mb->mb_mpintcnt == MPHOSTINT) { |
| 1066 | mb->mb_mpintcnt = 0; |
| 1067 | *(u_short *)mpinfo[mb->mb_unit]->ui_addr = 2; |
| 1068 | if (mb->mb_mpintclk) { |
| 1069 | untimeout(mptimeint, (caddr_t)mb); |
| 1070 | mb->mb_mpintclk = 0; |
| 1071 | } |
| 1072 | } else { |
| 1073 | if (mb->mb_mpintclk == 0) { |
| 1074 | timeout(mptimeint, (caddr_t)mb, 4); |
| 1075 | mb->mb_mpintclk = (caddr_t)1; |
| 1076 | } |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | static char *mpherrmsg[] = { |
| 1081 | "", |
| 1082 | "Bus error", /* MPBUSERR */ |
| 1083 | "Address error", /* ADDRERR */ |
| 1084 | "Undefined ecc interrupt", /* UNDECC */ |
| 1085 | "Undefined interrupt", /* UNDINT */ |
| 1086 | "Power failure occurred", /* PWRFL */ |
| 1087 | "Stray transmit done interrupt", /* NOXENTRY */ |
| 1088 | "Two fast timers on one port", /* TWOFTMRS */ |
| 1089 | "Interrupt queue full", /* INTQFULL */ |
| 1090 | "Interrupt queue ack error", /* INTQERR */ |
| 1091 | "Uncorrectable dma parity error", /* CBPERR */ |
| 1092 | "32 port ACAP failed power up", /* ACPDEAD */ |
| 1093 | }; |
| 1094 | #define NHERRS (sizeof (mpherrmsg) / sizeof (mpherrmsg[0])) |
| 1095 | |
| 1096 | mperror(mb, unit) |
| 1097 | register struct mblok *mb; |
| 1098 | int unit; |
| 1099 | { |
| 1100 | register char *cp; |
| 1101 | register int i; |
| 1102 | |
| 1103 | if (mb->mb_softerr) { |
| 1104 | switch (mb->mb_softerr) { |
| 1105 | case DMAPERR: /* dma parity error */ |
| 1106 | cp = "dma parity error"; |
| 1107 | break; |
| 1108 | case ECCERR: |
| 1109 | cp = "local memory ecc error"; |
| 1110 | break; |
| 1111 | default: |
| 1112 | cp = "unknown error"; |
| 1113 | break; |
| 1114 | } |
| 1115 | log(LOG_ERR, "mp%d: soft error, %s", unit, cp); |
| 1116 | mb->mb_softerr = 0; |
| 1117 | } |
| 1118 | if (mb->mb_harderr) { |
| 1119 | if (mb->mb_harderr < NHERRS) |
| 1120 | cp = mpherrmsg[mb->mb_harderr]; |
| 1121 | else |
| 1122 | cp = "unknown error"; |
| 1123 | log(LOG_ERR, "mp%d: hard error, %s", unit, cp); |
| 1124 | if (mb->mb_status == MP_OPOPEN) { |
| 1125 | for (i = 0; i < MPMAXPORT; i++) { |
| 1126 | mpcleanport(mb, i); |
| 1127 | mb->mb_proto[i] = MPPROTO_UNUSED; |
| 1128 | } |
| 1129 | } |
| 1130 | mb->mb_harderr = 0; |
| 1131 | mb->mb_status = 0; |
| 1132 | } |
| 1133 | } |
| 1134 | |
| 1135 | mppurge(addr, cc) |
| 1136 | register caddr_t addr; |
| 1137 | register int cc; |
| 1138 | { |
| 1139 | |
| 1140 | for (; cc >= 0; addr += NBPG, cc -= NBPG) |
| 1141 | mtpr(P1DC, addr); |
| 1142 | } |
| 1143 | |
| 1144 | /* |
| 1145 | * MPCC Download Pseudo-device. |
| 1146 | */ |
| 1147 | char mpdlbuf[MPDLBUFSIZE]; |
| 1148 | int mpdlbusy; /* interlock on download buffer */ |
| 1149 | int mpdlerr; |
| 1150 | |
| 1151 | mpdlopen(dev) |
| 1152 | dev_t dev; |
| 1153 | { |
| 1154 | int unit, mpu; |
| 1155 | struct vba_device *vi; |
| 1156 | |
| 1157 | unit = minor(dev); |
| 1158 | mpu = MPUNIT(unit); |
| 1159 | if (mpu >= NMP || (vi = mpinfo[mpu]) == 0 || vi->ui_alive == 0) |
| 1160 | return (ENODEV); |
| 1161 | return (0); |
| 1162 | } |
| 1163 | |
| 1164 | mpdlwrite(dev, uio) |
| 1165 | dev_t dev; |
| 1166 | struct uio *uio; |
| 1167 | { |
| 1168 | register struct mpsoftc *ms = &mp_softc[MPUNIT(minor(dev))]; |
| 1169 | register struct mpdl *dl; |
| 1170 | int error; |
| 1171 | |
| 1172 | if (ms->ms_mb == 0 || ms->ms_mb->mb_status != MP_DLOPEN) |
| 1173 | return (EFAULT); |
| 1174 | dl = &ms->ms_mb->mb_dl; |
| 1175 | dl->mpdl_count = uio->uio_iov->iov_len; |
| 1176 | dl->mpdl_data = (caddr_t) kvtophys(mpdlbuf); |
| 1177 | if (error = uiomove(mpdlbuf, (int)dl->mpdl_count, UIO_WRITE, uio)) |
| 1178 | return (error); |
| 1179 | uio->uio_resid -= dl->mpdl_count; /* set up return from write */ |
| 1180 | dl->mpdl_cmd = MPDLCMD_NORMAL; |
| 1181 | error = mpdlwait(dl); |
| 1182 | return (error); |
| 1183 | } |
| 1184 | |
| 1185 | mpdlclose(dev) |
| 1186 | dev_t dev; |
| 1187 | { |
| 1188 | register struct mblok *mb = mp_softc[MPUNIT(minor(dev))].ms_mb; |
| 1189 | |
| 1190 | if (mb == 0 || mb->mb_status != MP_DLDONE) { |
| 1191 | mpbogus.status = 0; |
| 1192 | if (mpbogus.mb == mpbogus.mbloks[MPUNIT(minor(dev))]) |
| 1193 | mpdlbusy--; |
| 1194 | return (EEXIST); |
| 1195 | } |
| 1196 | mb->mb_status = MP_OPOPEN; |
| 1197 | mpbogus.status = 0; |
| 1198 | /* set to dead, for board handshake */ |
| 1199 | mb->mb_hostint.imok = MPIMOK_DEAD; |
| 1200 | return (0); |
| 1201 | } |
| 1202 | |
| 1203 | int mpdltimeout(); |
| 1204 | |
| 1205 | /* ARGSUSED */ |
| 1206 | mpdlioctl(dev, cmd, data, flag) |
| 1207 | dev_t dev; |
| 1208 | caddr_t data; |
| 1209 | { |
| 1210 | register struct mblok *mb; |
| 1211 | register struct mpdl *dl; |
| 1212 | int unit, error, s, i; |
| 1213 | |
| 1214 | mb = mp_softc[unit=MPUNIT(minor(dev))].ms_mb; |
| 1215 | if (mb == 0) |
| 1216 | return (EEXIST); |
| 1217 | dl = &mb->mb_dl; |
| 1218 | error = 0; |
| 1219 | switch (cmd) { |
| 1220 | case MPIOPORTMAP: |
| 1221 | bcopy(data, (caddr_t)mb->mb_proto, sizeof (mb->mb_proto)); |
| 1222 | break; |
| 1223 | case MPIOHILO: |
| 1224 | bcopy(data, (caddr_t)&mb->mb_hiport, 2*(sizeof(mb->mb_hiport))); |
| 1225 | break; |
| 1226 | case MPIOENDDL: |
| 1227 | dl->mpdl_count = 0; |
| 1228 | dl->mpdl_data = 0; |
| 1229 | dl->mpdl_cmd = MPIOENDDL&IOCPARM_MASK; |
| 1230 | error = mpdlwait(dl); |
| 1231 | mpccinit(unit); |
| 1232 | mb->mb_status = MP_DLDONE; |
| 1233 | mpdlbusy--; |
| 1234 | break; |
| 1235 | case MPIOENDCODE: |
| 1236 | dl->mpdl_count = 0; |
| 1237 | dl->mpdl_data = 0; |
| 1238 | dl->mpdl_cmd = MPIOENDCODE&IOCPARM_MASK; |
| 1239 | error = mpdlwait(dl); |
| 1240 | break; |
| 1241 | case MPIOASYNCNF: |
| 1242 | bcopy(data, mpdlbuf, sizeof (struct abdcf)); |
| 1243 | dl->mpdl_data = (caddr_t) kvtophys(mpdlbuf); |
| 1244 | dl->mpdl_count = sizeof (struct abdcf); |
| 1245 | dl->mpdl_cmd = MPIOASYNCNF&IOCPARM_MASK; |
| 1246 | error = mpdlwait(dl); |
| 1247 | break; |
| 1248 | case MPIOSTARTDL: |
| 1249 | while (mpdlbusy) |
| 1250 | sleep((caddr_t)&mpdlbusy, PZERO+1); |
| 1251 | mpdlbusy++; |
| 1252 | /* initialize the downloading interface */ |
| 1253 | mpbogus.magic = MPMAGIC; |
| 1254 | mpbogus.mb = mpbogus.mbloks[unit]; |
| 1255 | mpbogus.status = 1; |
| 1256 | dl->mpdl_status = EVSTATUS_FREE; |
| 1257 | dl->mpdl_count = 0; |
| 1258 | dl->mpdl_cmd = 0; |
| 1259 | dl->mpdl_data = (char *) 0; |
| 1260 | mpdlerr = 0; |
| 1261 | mb->mb_magic = MPMAGIC; |
| 1262 | mb->mb_ivec = mp_softc[unit].ms_ivec+1; /* download vector */ |
| 1263 | mb->mb_status = MP_DLPEND; |
| 1264 | mb->mb_diagswitch[0] = 'A'; |
| 1265 | mb->mb_diagswitch[1] = 'P'; |
| 1266 | s = spl8(); |
| 1267 | *(u_short *)mpinfo[unit]->ui_addr = 2; |
| 1268 | timeout(mpdltimeout, (caddr_t)mb, 30*hz); |
| 1269 | sleep((caddr_t)&mb->mb_status, PZERO+1); |
| 1270 | splx(s); |
| 1271 | if (mb->mb_status == MP_DLOPEN) { |
| 1272 | untimeout(mpdltimeout, (caddr_t)mb); |
| 1273 | } else if (mb->mb_status == MP_DLTIME) { |
| 1274 | mpbogus.status = 0; |
| 1275 | error = ETIMEDOUT; |
| 1276 | } else { |
| 1277 | mpbogus.status = 0; |
| 1278 | error = ENXIO; |
| 1279 | log(LOG_ERR, "mp%d: start download: unknown status %x", |
| 1280 | unit, mb->mb_status); |
| 1281 | } |
| 1282 | bzero((caddr_t)mb->mb_port, sizeof (mb->mb_port)); |
| 1283 | break; |
| 1284 | case MPIORESETBOARD: |
| 1285 | s = spl8(); |
| 1286 | if (mb->mb_imokclk) |
| 1287 | mb->mb_imokclk = 0; |
| 1288 | *(u_short *)mpinfo[unit]->ui_addr = 0x100; |
| 1289 | if (mb->mb_status == MP_DLOPEN || mb->mb_status == MP_DLDONE) { |
| 1290 | mpdlerr = MP_DLERROR; |
| 1291 | dl->mpdl_status = EVSTATUS_FREE; |
| 1292 | wakeup((caddr_t)&dl->mpdl_status); |
| 1293 | mpbogus.status = 0; |
| 1294 | } |
| 1295 | for (i = 0; i < MPMAXPORT; i++) { |
| 1296 | if (mb->mb_harderr || mb->mb_softerr) |
| 1297 | mperror(mb, i); |
| 1298 | mpcleanport(mb, i); |
| 1299 | mb->mb_proto[i] = MPPROTO_UNUSED; |
| 1300 | } |
| 1301 | mb->mb_status = 0; |
| 1302 | splx(s); |
| 1303 | break; |
| 1304 | default: |
| 1305 | error = EINVAL; |
| 1306 | break; |
| 1307 | } |
| 1308 | return (error); |
| 1309 | } |
| 1310 | |
| 1311 | mpccinit(unit) |
| 1312 | int unit; |
| 1313 | { |
| 1314 | register struct mblok *mb = mp_softc[unit].ms_mb; |
| 1315 | register struct his *his; |
| 1316 | register int i, j; |
| 1317 | |
| 1318 | mb->mb_status = MP_DLDONE; |
| 1319 | mb->mb_ivec = mp_softc[unit].ms_ivec; |
| 1320 | mb->mb_magic = MPMAGIC; |
| 1321 | /* Init host interface structure */ |
| 1322 | his = &mb->mb_hostint; |
| 1323 | his->semaphore = MPSEMA_AVAILABLE; |
| 1324 | for (i = 0; i < NMPPROTO; i++) |
| 1325 | for (j = 0; j < MPMAXPORT; j++) { |
| 1326 | his->proto[i].inbdone[j] = MPPORT_EOL; |
| 1327 | his->proto[i].outbdone[j] = MPPORT_EOL; |
| 1328 | } |
| 1329 | mb->mb_unit = unit; |
| 1330 | } |
| 1331 | |
| 1332 | mpdlintr(mpcc) |
| 1333 | int mpcc; |
| 1334 | { |
| 1335 | register struct mblok *mb; |
| 1336 | register struct mpdl *dl; |
| 1337 | |
| 1338 | mb = mp_softc[mpcc].ms_mb; |
| 1339 | if (mb == 0) { |
| 1340 | printf("mp%d: stray download interrupt\n", mpcc); |
| 1341 | return; |
| 1342 | } |
| 1343 | dl = &mb->mb_dl; |
| 1344 | switch (mb->mb_status) { |
| 1345 | case MP_DLOPEN: |
| 1346 | if (dl->mpdl_status != EVSTATUS_DONE) |
| 1347 | mpdlerr = MP_DLERROR; |
| 1348 | dl->mpdl_status = EVSTATUS_FREE; |
| 1349 | wakeup((caddr_t)&dl->mpdl_status); |
| 1350 | return; |
| 1351 | case MP_DLPEND: |
| 1352 | mb->mb_status = MP_DLOPEN; |
| 1353 | wakeup((caddr_t)&mb->mb_status); |
| 1354 | /* fall thru... */ |
| 1355 | case MP_DLTIME: |
| 1356 | return; |
| 1357 | case MP_OPOPEN: |
| 1358 | if (mb->mb_imokclk) |
| 1359 | mb->mb_imokclk = 0; |
| 1360 | mb->mb_nointcnt = 0; /* reset no interrupt count */ |
| 1361 | mb->mb_hostint.imok = MPIMOK_DEAD; |
| 1362 | mb->mb_imokclk = (caddr_t)1; |
| 1363 | break; |
| 1364 | default: |
| 1365 | log(LOG_ERR, "mp%d: mpdlintr, status %x\n", |
| 1366 | mpcc, mb->mb_status); |
| 1367 | break; |
| 1368 | } |
| 1369 | } |
| 1370 | |
| 1371 | mpdltimeout(mp) |
| 1372 | struct mblok *mp; |
| 1373 | { |
| 1374 | |
| 1375 | mp->mb_status = MP_DLTIME; |
| 1376 | wakeup((caddr_t)&mp->mb_status); |
| 1377 | } |
| 1378 | |
| 1379 | /* |
| 1380 | * Wait for a transfer to complete or a timeout to occur. |
| 1381 | */ |
| 1382 | mpdlwait(dl) |
| 1383 | register struct mpdl *dl; |
| 1384 | { |
| 1385 | int s, error = 0; |
| 1386 | |
| 1387 | s = spl8(); |
| 1388 | dl->mpdl_status = EVSTATUS_GO; |
| 1389 | while (dl->mpdl_status != EVSTATUS_FREE) { |
| 1390 | sleep((caddr_t)&dl->mpdl_status, PZERO+1); |
| 1391 | if (mpdlerr == MP_DLERROR) |
| 1392 | error = EIO; |
| 1393 | } |
| 1394 | splx(s); |
| 1395 | return (error); |
| 1396 | } |
| 1397 | #endif |