1 /* uda.c 4.3 82/03/14 */ 2 3 #include "ra.h" 4 #if NUDA > 0 5 /* 6 * UDA50/RAxx disk device driver 7 * 8 * Restrictions: 9 * Unit numbers must be less than 8. 10 * 11 * TO DO: 12 * write dump code 13 * test on 750 14 */ 15 16 #include "../h/param.h" 17 #include "../h/systm.h" 18 #include "../h/buf.h" 19 #include "../h/conf.h" 20 #include "../h/dir.h" 21 #include "../h/user.h" 22 #include "../h/pte.h" 23 #include "../h/map.h" 24 #include "../h/vm.h" 25 #include "../h/ubareg.h" 26 #include "../h/ubavar.h" 27 #include "../h/dk.h" 28 #include "../h/cpu.h" 29 #include "../h/cmap.h" 30 31 int udadebug; 32 #define printd if(udadebug&1)printf 33 34 /* 35 * Parameters for the communications area 36 */ 37 38 #define NRSPL2 3 39 #define NCMDL2 3 40 #define NRSP (1<<NRSPL2) 41 #define NCMD (1<<NCMDL2) 42 43 #include "../h/udareg.h" 44 #include "../h/mscp.h" 45 46 struct uda_softc { 47 short sc_state; /* state of controller */ 48 short sc_mapped; /* Unibus map allocated for uda struct? */ 49 int sc_ubainfo; /* Unibus mapping info */ 50 struct uda *sc_uda; /* Unibus address of uda struct */ 51 int sc_ivec; /* interrupt vector address */ 52 short sc_credits; /* transfer credits */ 53 short sc_lastcmd; /* pointer into command ring */ 54 short sc_lastrsp; /* pointer into response ring */ 55 } uda_softc[NUDA]; 56 57 /* 58 * Controller states 59 */ 60 #define S_IDLE 0 /* hasn't been initialized */ 61 #define S_STEP1 1 /* doing step 1 init */ 62 #define S_STEP2 2 /* doing step 2 init */ 63 #define S_STEP3 3 /* doing step 3 init */ 64 #define S_SCHAR 4 /* doing "set controller characteristics" */ 65 #define S_RUN 5 /* running */ 66 67 struct uda { 68 struct udaca uda_ca; /* communications area */ 69 struct mscp uda_rsp[NRSP]; /* response packets */ 70 struct mscp uda_cmd[NCMD]; /* command packets */ 71 } uda[NUDA]; 72 73 /* THIS SHOULD BE READ OFF THE PACK, PER DRIVE */ 74 struct size { 75 daddr_t nblocks; 76 daddr_t blkoff; 77 } ra_sizes[8] ={ 78 15884, 0, /* A=blk 0 thru 15883 */ 79 33440, 15884, /* B=blk 15884 thru 49323 */ 80 -1, 0, /* C=blk 0 thru end */ 81 0, 0, /* D reserved for RA81 */ 82 0, 0, /* E reserved for RA81 */ 83 0, 0, /* F reserved for RA81 */ 84 82080, 49324, /* G=blk 49324 thru 131403 */ 85 -1, 131404, /* H=blk 131404 thru end */ 86 }; 87 /* END OF STUFF WHICH SHOULD BE READ IN PER DISK */ 88 89 daddr_t radsize[NRA]; /* disk size, from ONLINE end packet */ 90 91 int udprobe(), udslave(), udattach(), udintr(); 92 struct mscp *udgetcp(); 93 struct uba_ctlr *udminfo[NUDA]; 94 struct uba_device *uddinfo[NRA]; 95 struct uba_device *udip[NUDA][8]; /* 8 == max number of drives */ 96 97 u_short udstd[] = { 0777550, 0 }; 98 struct uba_driver udadriver = 99 { udprobe, udslave, udattach, 0, udstd, "ra", uddinfo, "uda", udminfo, 0 }; 100 struct buf rudbuf[NRA]; 101 struct buf udutab[NRA]; 102 struct buf udwtab[NUDA]; /* I/O wait queue, per controller */ 103 104 #define b_qsize b_resid /* queue size per drive, in udutab */ 105 #define b_ubinfo b_resid /* Unibus mapping info, per buffer */ 106 107 udprobe(reg, ctlr) 108 caddr_t reg; 109 int ctlr; 110 { 111 register int br, cvec; 112 register struct uda_softc *sc = &uda_softc[ctlr]; 113 114 #ifdef lint 115 br = 0; cvec = br; br = cvec; reg = reg; 116 udread(0); udwrite(0); udreset(0); udintr(0); 117 #endif 118 /* SHOULD CHECK THAT IT REALLY IS A UDA */ 119 br = 0x15; 120 cvec = sc->sc_ivec = (uba_hd[numuba].uh_lastiv -= 4); 121 return(1); 122 } 123 124 udslave(ui, reg) 125 struct uba_device *ui; 126 caddr_t reg; 127 { 128 /* 129 * TOO HARD TO FIND OUT IF DISK IS THERE UNTIL 130 * INITIALIZED. WE'LL FIND OUT WHEN WE FIRST 131 * TRY TO ACCESS IT. 132 */ 133 #ifdef lint 134 ui = ui; reg = reg; 135 #endif 136 return(1); 137 } 138 139 udattach(ui) 140 register struct uba_device *ui; 141 { 142 143 if (ui->ui_dk > 0) 144 dk_mspw[ui->ui_dk] = 1.0 / (60 * 31 * 256); /* approx */ 145 ui->ui_flags = 0; 146 udip[ui->ui_ctlr][ui->ui_slave] = ui; 147 radsize[ui->ui_unit] = (daddr_t)0xffffff; /* max possible size */ 148 } 149 150 /* 151 * Open a UDA. Initialize the device and 152 * set the unit online. 153 */ 154 udopen(dev, flag) 155 dev_t dev; 156 int flag; 157 { 158 register int unit; 159 register struct uba_device *ui; 160 register struct uda_softc *sc; 161 int s; 162 163 #ifdef lint 164 flag = flag; 165 #endif 166 unit = minor(dev) >> 3; 167 if (unit >= NRA || (ui = uddinfo[unit]) == 0 || ui->ui_alive == 0) { 168 u.u_error = ENXIO; 169 return; 170 } 171 sc = &uda_softc[ui->ui_ctlr]; 172 s = spl5(); 173 if (sc->sc_state != S_RUN) { 174 if (sc->sc_state == S_IDLE) 175 udinit(ui->ui_ctlr); 176 /* wait for initialization to complete */ 177 sleep((caddr_t)ui->ui_mi, 0); 178 if (sc->sc_state != S_RUN) { 179 u.u_error = EIO; 180 return; 181 } 182 } 183 splx(s); 184 /* SHOULD PROBABLY FORCE AN ONLINE ATTEMPT 185 TO SEE IF DISK IS REALLY THERE */ 186 } 187 188 /* 189 * Initialize a UDA. Set up UBA mapping registers, 190 * initialize data structures, and start hardware 191 * initialization sequence. 192 */ 193 udinit(d) 194 int d; 195 { 196 register struct uda_softc *sc; 197 register struct uda *ud; 198 struct udadevice *udaddr; 199 struct uba_ctlr *um; 200 201 sc = &uda_softc[d]; 202 um = udminfo[d]; 203 um->um_tab.b_active++; 204 ud = &uda[d]; 205 udaddr = (struct udadevice *)um->um_addr; 206 if (sc->sc_mapped == 0) { 207 /* 208 * Map the communications area and command 209 * and response packets into Unibus address 210 * space. 211 */ 212 sc->sc_ubainfo = uballoc(um->um_ubanum, (caddr_t)ud, 213 sizeof (struct uda), 0); 214 sc->sc_uda = (struct uda *)(sc->sc_ubainfo & 0x3ffff); 215 sc->sc_mapped = 1; 216 } 217 218 /* 219 * Start the hardware initialization sequence. 220 */ 221 udaddr->udaip = 0; /* start initialization */ 222 while ((udaddr->udasa & UDA_STEP1) == 0) 223 ; 224 udaddr->udasa = UDA_ERR|(NCMDL2<<11)|(NRSPL2<<8)|UDA_IE|(sc->sc_ivec/4); 225 /* 226 * Initialization continues in interrupt routine. 227 */ 228 sc->sc_state = S_STEP1; 229 sc->sc_credits = 0; 230 } 231 232 udstrategy(bp) 233 register struct buf *bp; 234 { 235 register struct uba_device *ui; 236 register struct uba_ctlr *um; 237 register struct buf *dp; 238 register int unit; 239 int xunit = minor(bp->b_dev) & 07; 240 daddr_t sz, maxsz; 241 int s; 242 243 sz = (bp->b_bcount+511) >> 9; 244 unit = dkunit(bp); 245 if (unit >= NRA) 246 goto bad; 247 ui = uddinfo[unit]; 248 um = ui->ui_mi; 249 if (ui == 0 || ui->ui_alive == 0) 250 goto bad; 251 if ((maxsz = ra_sizes[xunit].nblocks) < 0) 252 maxsz = radsize[unit] - ra_sizes[xunit].blkoff; 253 if (bp->b_blkno < 0 || bp->b_blkno+sz > maxsz || 254 ra_sizes[xunit].blkoff >= radsize[unit]) 255 goto bad; 256 s = spl5(); 257 /* 258 * Link the buffer onto the drive queue 259 */ 260 dp = &udutab[ui->ui_unit]; 261 if (dp->b_actf == 0) 262 dp->b_actf = bp; 263 else 264 dp->b_actl->av_forw = bp; 265 dp->b_actl = bp; 266 bp->av_forw = 0; 267 /* 268 * Link the drive onto the controller queue 269 */ 270 if (dp->b_active == 0) { 271 dp->b_forw = NULL; 272 if (um->um_tab.b_actf == NULL) 273 um->um_tab.b_actf = dp; 274 else 275 um->um_tab.b_actl->b_forw = dp; 276 um->um_tab.b_actl = dp; 277 dp->b_active = 1; 278 } 279 if (um->um_tab.b_active == 0) { 280 #if defined(VAX750) 281 if (cpu == VAX_750) { 282 if (um->um_ubinfo != 0) 283 printf("uda: ubinfo %x\n",um->um_ubinfo); 284 else 285 um->um_ubinfo = 286 uballoc(um->um_ubanum, (caddr_t)0, 0, 287 UBA_NEEDBDP); 288 } 289 #endif 290 (void) udstart(um); 291 } 292 splx(s); 293 return; 294 295 bad: 296 bp->b_flags |= B_ERROR; 297 iodone(bp); 298 return; 299 } 300 301 udstart(um) 302 register struct uba_ctlr *um; 303 { 304 register struct buf *bp, *dp; 305 register struct mscp *mp; 306 register struct uda_softc *sc; 307 register struct uba_device *ui; 308 struct udadevice *udaddr; 309 int i; 310 311 sc = &uda_softc[um->um_ctlr]; 312 313 loop: 314 if ((dp = um->um_tab.b_actf) == NULL) { 315 /* 316 * Release uneeded UBA resources and return 317 */ 318 um->um_tab.b_active = 0; 319 #if defined(VAX750) 320 if (cpu == VAX_750) { 321 if (um->um_ubinfo == 0) 322 printf("uda: um_ubinfo == 0\n"); 323 else 324 ubarelse(um->um_ubanum, &um->um_ubinfo); 325 } 326 #endif 327 return (0); 328 } 329 if ((bp = dp->b_actf) == NULL) { 330 /* 331 * No more requests for this drive, remove 332 * from controller queue and look at next drive. 333 * We know we're at the head of the controller queue. 334 */ 335 dp->b_active = 0; 336 um->um_tab.b_actf = dp->b_forw; 337 goto loop; 338 } 339 um->um_tab.b_active++; 340 udaddr = (struct udadevice *)um->um_addr; 341 if ((udaddr->udasa&UDA_ERR) || sc->sc_state != S_RUN) { 342 harderr(bp, "ra"); 343 printf("udasa %o, state %d\n", udaddr->udasa&0xffff, sc->sc_state); 344 udinit(um->um_ctlr); 345 /* SHOULD REQUEUE OUTSTANDING REQUESTS, LIKE UDRESET */ 346 return (0); 347 } 348 ui = uddinfo[dkunit(bp)]; 349 /* 350 * If no credits, can't issue any commands 351 * until some outstanding commands complete. 352 */ 353 if (sc->sc_credits < 2) 354 return (0); 355 if ((mp = udgetcp(um)) == NULL) 356 return (0); 357 sc->sc_credits--; /* committed to issuing a command */ 358 if (ui->ui_flags == 0) { /* not online */ 359 mp->mscp_opcode = M_OP_ONLIN; 360 mp->mscp_unit = ui->ui_slave; 361 dp->b_active = 2; 362 um->um_tab.b_actf = dp->b_forw; /* remove from controller q */ 363 printd("uda: bring unit %d online\n", ui->ui_slave); 364 *((long *)mp->mscp_dscptr) |= UDA_OWN|UDA_INT; 365 i = udaddr->udaip; 366 goto loop; 367 } 368 switch (cpu) { 369 case VAX_780: 370 i = UBA_NEEDBDP|UBA_CANTWAIT; 371 break; 372 373 case VAX_750: 374 i = um->um_ubinfo|UBA_HAVEBDP|UBA_CANTWAIT; 375 break; 376 377 case VAX_7ZZ: 378 i = UBA_CANTWAIT; 379 break; 380 } 381 if ((i = ubasetup(um->um_ubanum, bp, i)) == 0) { 382 mp->mscp_opcode = M_OP_GTUNT; 383 mp->mscp_unit = ui->ui_slave; 384 *((long *)mp->mscp_dscptr) |= UDA_OWN|UDA_INT; 385 i = udaddr->udaip; /* initiate polling */ 386 return(1); /* wait for interrupt */ 387 } 388 mp->mscp_cmdref = (long)bp; /* pointer to get back */ 389 mp->mscp_opcode = bp->b_flags&B_READ ? M_OP_READ : M_OP_WRITE; 390 mp->mscp_unit = ui->ui_slave; 391 mp->mscp_lbn = bp->b_blkno + ra_sizes[minor(bp->b_dev)&7].blkoff; 392 mp->mscp_bytecnt = bp->b_bcount; 393 mp->mscp_buffer = (i & 0x3ffff) | (((i>>28)&0xf)<<24); 394 #if defined(VAX750) 395 if (cpu == VAX_750) 396 i &= 0xfffffff; /* mask off bdp */ 397 #endif 398 bp->b_ubinfo = i; /* save mapping info */ 399 *((long *)mp->mscp_dscptr) |= UDA_OWN|UDA_INT; 400 i = udaddr->udaip; /* initiate polling */ 401 if (ui->ui_dk >= 0) { 402 dk_busy |= 1<<ui->ui_dk; 403 dp->b_qsize++; 404 dk_xfer[ui->ui_dk]++; 405 dk_wds[ui->ui_dk] += bp->b_bcount>>6; 406 } 407 408 /* 409 * Move drive to the end of the controller queue 410 */ 411 if (dp->b_forw != NULL) { 412 um->um_tab.b_actf = dp->b_forw; 413 um->um_tab.b_actl->b_forw = dp; 414 um->um_tab.b_actl = dp; 415 dp->b_forw = NULL; 416 } 417 /* 418 * Move buffer to I/O wait queue 419 */ 420 dp->b_actf = bp->av_forw; 421 dp = &udwtab[um->um_ctlr]; 422 bp->av_forw = dp; 423 bp->av_back = dp->av_back; 424 dp->av_back->av_forw = bp; 425 dp->av_back = bp; 426 goto loop; 427 } 428 429 /* 430 * UDA interrupt routine. 431 */ 432 udintr(d) 433 int d; 434 { 435 register struct uba_ctlr *um = udminfo[d]; 436 register struct udadevice *udaddr = (struct udadevice *)um->um_addr; 437 struct buf *bp; 438 register int i; 439 register struct uda_softc *sc = &uda_softc[d]; 440 register struct uda *ud = &uda[d]; 441 struct uda *uud; 442 struct mscp *mp; 443 444 printd("udintr: state %d, udasa %o\n", sc->sc_state, udaddr->udasa); 445 switch (sc->sc_state) { 446 case S_IDLE: 447 printf("uda%d: random interrupt ignored\n", d); 448 return; 449 450 case S_STEP1: 451 #define STEP1GOOD (UDA_STEP2|UDA_IE|(NCMDL2<<3)|NRSPL2) 452 if ((udaddr->udasa&(UDA_ERR|STEP1GOOD)) != STEP1GOOD) { 453 sc->sc_state = S_IDLE; 454 wakeup((caddr_t)um); 455 return; 456 } 457 udaddr->udasa = ((int)&sc->sc_uda->uda_ca.ca_ringbase)| 458 (cpu == VAX_780 ? UDA_PI : 0); 459 sc->sc_state = S_STEP2; 460 return; 461 462 case S_STEP2: 463 #define STEP2GOOD (UDA_STEP3|UDA_IE|(sc->sc_ivec/4)) 464 if ((udaddr->udasa&(UDA_ERR|STEP2GOOD)) != STEP2GOOD) { 465 sc->sc_state = S_IDLE; 466 wakeup((caddr_t)um); 467 return; 468 } 469 udaddr->udasa = ((int)&sc->sc_uda->uda_ca.ca_ringbase)>>16; 470 sc->sc_state = S_STEP3; 471 return; 472 473 case S_STEP3: 474 #define STEP3GOOD UDA_STEP4 475 if ((udaddr->udasa&(UDA_ERR|STEP3GOOD)) != STEP3GOOD) { 476 sc->sc_state = S_IDLE; 477 wakeup((caddr_t)um); 478 return; 479 } 480 udaddr->udasa = UDA_GO; 481 sc->sc_state = S_SCHAR; 482 483 /* 484 * Initialize the data structures. 485 */ 486 uud = sc->sc_uda; 487 for (i = 0; i < NRSP; i++) { 488 ud->uda_ca.ca_rspdsc[i] = UDA_OWN|UDA_INT| 489 (long)&uud->uda_rsp[i].mscp_cmdref; 490 ud->uda_rsp[i].mscp_dscptr = &ud->uda_ca.ca_rspdsc[i]; 491 ud->uda_rsp[i].mscp_header.uda_msglen = sizeof (struct mscp); 492 } 493 for (i = 0; i < NCMD; i++) { 494 ud->uda_ca.ca_cmddsc[i] = UDA_INT| 495 (long)&uud->uda_cmd[i].mscp_cmdref; 496 ud->uda_cmd[i].mscp_dscptr = &ud->uda_ca.ca_cmddsc[i]; 497 ud->uda_cmd[i].mscp_header.uda_msglen = sizeof (struct mscp); 498 } 499 bp = &udwtab[d]; 500 bp->av_forw = bp->av_back = bp; 501 sc->sc_lastcmd = 0; 502 sc->sc_lastrsp = 0; 503 if ((mp = udgetcp(um)) == NULL) { 504 sc->sc_state = S_IDLE; 505 wakeup((caddr_t)um); 506 return; 507 } 508 mp->mscp_opcode = M_OP_STCON; 509 mp->mscp_cntflgs = M_CF_ATTN|M_CF_MISC|M_CF_THIS; 510 *((long *)mp->mscp_dscptr) |= UDA_OWN|UDA_INT; 511 i = udaddr->udaip; /* initiate polling */ 512 return; 513 514 case S_SCHAR: 515 case S_RUN: 516 break; 517 518 default: 519 printf("uda%d: interrupt in unknown state %d ignored\n", 520 d, sc->sc_state); 521 return; 522 } 523 524 if (udaddr->udasa&UDA_ERR) { 525 printf("uda%d: fatal error (%o)\n", d, udaddr->udasa&0xffff); 526 udaddr->udaip = 0; 527 wakeup((caddr_t)um); 528 } 529 530 /* 531 * Check for a buffer purge request. 532 */ 533 if (ud->uda_ca.ca_bdp) { 534 /* 535 * THIS IS A KLUDGE. 536 * Maybe we should change the entire 537 * UBA interface structure. 538 */ 539 int s = spl7(); 540 541 i = um->um_ubinfo; 542 printd("uda: purge bdp %d\n", ud->uda_ca.ca_bdp); 543 um->um_ubinfo = ud->uda_ca.ca_bdp<<28; 544 ubapurge(um); 545 um->um_ubinfo = i; 546 (void) splx(s); 547 ud->uda_ca.ca_bdp = 0; 548 udaddr->udasa = 0; /* signal purge complete */ 549 } 550 551 /* 552 * Check for response ring transition. 553 */ 554 if (ud->uda_ca.ca_rspint) { 555 ud->uda_ca.ca_rspint = 0; 556 for (i = sc->sc_lastrsp;; i++) { 557 i %= NRSP; 558 if (ud->uda_ca.ca_rspdsc[i]&UDA_OWN) 559 break; 560 udrsp(um, ud, sc, i); 561 ud->uda_ca.ca_rspdsc[i] |= UDA_OWN; 562 } 563 sc->sc_lastrsp = i; 564 } 565 566 /* 567 * Check for command ring transition. 568 */ 569 if (ud->uda_ca.ca_cmdint) { 570 printd("uda: command ring transition\n"); 571 ud->uda_ca.ca_cmdint = 0; 572 } 573 (void) udstart(um); 574 } 575 576 /* 577 * Process a response packet 578 */ 579 udrsp(um, ud, sc, i) 580 register struct uba_ctlr *um; 581 register struct uda *ud; 582 register struct uda_softc *sc; 583 int i; 584 { 585 register struct mscp *mp; 586 struct uba_device *ui; 587 struct buf *dp, *bp; 588 int st; 589 590 mp = &ud->uda_rsp[i]; 591 mp->mscp_header.uda_msglen = sizeof (struct mscp); 592 sc->sc_credits += mp->mscp_header.uda_credits & 0xf; 593 if ((mp->mscp_header.uda_credits & 0xf0) > 0x10) 594 return; 595 /* 596 * If it's an error log message (datagram), 597 * pass it on for more extensive processing. 598 */ 599 if ((mp->mscp_header.uda_credits & 0xf0) == 0x10) { 600 uderror(um, (struct mslg *)mp); 601 return; 602 } 603 if (mp->mscp_unit >= 8) 604 return; 605 if ((ui = udip[um->um_ctlr][mp->mscp_unit]) == 0) 606 return; 607 st = mp->mscp_status&M_ST_MASK; 608 switch (mp->mscp_opcode) { 609 case M_OP_STCON|M_OP_END: 610 if (st == M_ST_SUCC) 611 sc->sc_state = S_RUN; 612 else 613 sc->sc_state = S_IDLE; 614 um->um_tab.b_active = 0; 615 wakeup((caddr_t)um); 616 break; 617 618 case M_OP_ONLIN|M_OP_END: 619 /* 620 * Link the drive onto the controller queue 621 */ 622 dp = &udutab[ui->ui_unit]; 623 dp->b_forw = NULL; 624 if (um->um_tab.b_actf == NULL) 625 um->um_tab.b_actf = dp; 626 else 627 um->um_tab.b_actl->b_forw = dp; 628 um->um_tab.b_actl = dp; 629 if (st == M_ST_SUCC) { 630 ui->ui_flags = 1; /* mark it online */ 631 radsize[ui->ui_unit] = (daddr_t)mp->mscp_untsize; 632 printd("uda: unit %d online\n", mp->mscp_unit); 633 } else { 634 harderr(dp->b_actf, "ra"); 635 printf("OFFLINE\n"); 636 while (bp = dp->b_actf) { 637 dp->b_actf = bp->av_forw; 638 bp->b_flags |= B_ERROR; 639 iodone(bp); 640 } 641 } 642 dp->b_active = 1; 643 break; 644 645 case M_OP_AVATN: 646 printd("uda: unit %d attention\n", mp->mscp_unit); 647 ui->ui_flags = 0; /* it went offline and we didn't notice */ 648 break; 649 650 case M_OP_READ|M_OP_END: 651 case M_OP_WRITE|M_OP_END: 652 bp = (struct buf *)mp->mscp_cmdref; 653 ubarelse(um->um_ubanum, (int *)&bp->b_resid); 654 /* 655 * Unlink buffer from I/O wait queue. 656 */ 657 bp->av_back->av_forw = bp->av_forw; 658 bp->av_forw->av_back = bp->av_back; 659 dp = &udutab[ui->ui_unit]; 660 if (ui->ui_dk >= 0) 661 if (--dp->b_qsize == 0) 662 dk_busy &= ~(1<<ui->ui_dk); 663 if (st == M_ST_OFFLN || st == M_ST_AVLBL) { 664 ui->ui_flags = 0; /* mark unit offline */ 665 /* 666 * Link the buffer onto the front of the drive queue 667 */ 668 if ((bp->av_forw = dp->b_actf) == 0) 669 dp->b_actl = bp; 670 dp->b_actf = bp; 671 /* 672 * Link the drive onto the controller queue 673 */ 674 if (dp->b_active == 0) { 675 dp->b_forw = NULL; 676 if (um->um_tab.b_actf == NULL) 677 um->um_tab.b_actf = dp; 678 else 679 um->um_tab.b_actl->b_forw = dp; 680 um->um_tab.b_actl = dp; 681 dp->b_active = 1; 682 } 683 return; 684 } 685 if (st != M_ST_SUCC) { 686 harderr(bp, "ra"); 687 printf("status %o\n", mp->mscp_status); 688 bp->b_flags |= B_ERROR; 689 } 690 bp->b_resid = bp->b_bcount - mp->mscp_bytecnt; 691 iodone(bp); 692 break; 693 694 case M_OP_GTUNT|M_OP_END: 695 break; 696 697 default: 698 printf("uda: unknown packet\n"); 699 } 700 } 701 702 703 /* 704 * Process an error log message 705 * 706 * For now, just log the error on the console. 707 * Only minimal decoding is done, only "useful" 708 * information is printed. Eventually should 709 * send message to an error logger. 710 */ 711 uderror(um, mp) 712 register struct uba_ctlr *um; 713 register struct mslg *mp; 714 { 715 printf("uda%d:%d: %s error, ", um->um_ctlr, mp->mslg_seqnum, 716 mp->mslg_flags&M_LF_SUCC ? "soft" : "hard"); 717 switch (mp->mslg_format) { 718 case M_FM_CNTERR: 719 printf("controller error, event 0%o\n", mp->mslg_event); 720 break; 721 722 case M_FM_BUSADDR: 723 printf("host memory access error, event 0%o, addr 0%o\n", 724 mp->mslg_event, *((long *)&mp->mslg_busaddr[0])); 725 break; 726 727 case M_FM_DISKTRN: 728 printf("disk transfer error, unit %d, grp %d, cyl %d, sec %d, ", 729 mp->mslg_unit, mp->mslg_group, mp->mslg_cylinder, 730 mp->mslg_sector); 731 printf("trk %d, lbn %d, retry %d, level %d\n", mp->mslg_track, 732 mp->mslg_lbn, mp->mslg_retry, mp->mslg_level); 733 break; 734 735 case M_FM_SDI: 736 printf("SDI error, unit %d, event 0%o, cyl %d\n", mp->mslg_unit, 737 mp->mslg_event, mp->mslg_cylinder); 738 break; 739 740 case M_FM_SMLDSK: 741 printf("small disk error, unit %d, event 0%o, cyl %d\n", 742 mp->mslg_unit, mp->mslg_event, mp->mslg_sdecyl); 743 break; 744 745 default: 746 printf("unknown error, unit %d, format 0%o, event 0%o\n", 747 mp->mslg_unit, mp->mslg_format, mp->mslg_event); 748 } 749 } 750 751 752 /* 753 * Find an unused command packet 754 */ 755 struct mscp * 756 udgetcp(um) 757 struct uba_ctlr *um; 758 { 759 register struct mscp *mp; 760 register struct udaca *cp; 761 register struct uda_softc *sc; 762 register int i; 763 764 cp = &uda[um->um_ctlr].uda_ca; 765 sc = &uda_softc[um->um_ctlr]; 766 i = sc->sc_lastcmd; 767 if ((cp->ca_cmddsc[i] & (UDA_OWN|UDA_INT)) == UDA_INT) { 768 cp->ca_cmddsc[i] &= ~UDA_INT; 769 mp = &uda[um->um_ctlr].uda_cmd[i]; 770 mp->mscp_unit = mp->mscp_modifier = 0; 771 mp->mscp_opcode = mp->mscp_flags = 0; 772 mp->mscp_bytecnt = mp->mscp_buffer = 0; 773 mp->mscp_errlgfl = mp->mscp_copyspd = 0; 774 sc->sc_lastcmd = (i + 1) % NCMD; 775 return(mp); 776 } 777 return(NULL); 778 } 779 780 udread(dev) 781 dev_t dev; 782 { 783 register int unit = minor(dev) >> 3; 784 785 if (unit >= NRA) 786 u.u_error = ENXIO; 787 else 788 physio(udstrategy, &rudbuf[unit], dev, B_READ, minphys); 789 } 790 791 udwrite(dev) 792 dev_t dev; 793 { 794 register int unit = minor(dev) >> 3; 795 796 if (unit >= NRA) 797 u.u_error = ENXIO; 798 else 799 physio(udstrategy, &rudbuf[unit], dev, B_WRITE, minphys); 800 } 801 802 udreset(uban) 803 int uban; 804 { 805 register struct uba_ctlr *um; 806 register struct uba_device *ui; 807 register struct buf *bp, *dp; 808 register int unit; 809 struct buf *nbp; 810 int d; 811 812 for (d = 0; d < NUDA; d++) { 813 if ((um = udminfo[d]) == 0 || um->um_ubanum != uban || 814 um->um_alive == 0) 815 continue; 816 printf(" uda%d", d); 817 um->um_tab.b_active = 0; 818 um->um_tab.b_actf = um->um_tab.b_actl = 0; 819 uda_softc[d].sc_state = S_IDLE; 820 for (unit = 0; unit < NRA; unit++) { 821 if ((ui = uddinfo[unit]) == 0) 822 continue; 823 if (ui->ui_alive == 0 || ui->ui_mi != um) 824 continue; 825 udutab[unit].b_active = 0; 826 udutab[unit].b_qsize = 0; 827 } 828 for (bp = udwtab[d].av_forw; bp != &udwtab[d]; bp = nbp) { 829 nbp = bp->av_forw; 830 ubarelse(uban, (int *)&bp->b_ubinfo); 831 /* 832 * Link the buffer onto the drive queue 833 */ 834 dp = &udutab[dkunit(bp)]; 835 if (dp->b_actf == 0) 836 dp->b_actf = bp; 837 else 838 dp->b_actl->av_forw = bp; 839 dp->b_actl = bp; 840 bp->av_forw = 0; 841 /* 842 * Link the drive onto the controller queue 843 */ 844 if (dp->b_active == 0) { 845 dp->b_forw = NULL; 846 if (um->um_tab.b_actf == NULL) 847 um->um_tab.b_actf = dp; 848 else 849 um->um_tab.b_actl->b_forw = dp; 850 um->um_tab.b_actl = dp; 851 dp->b_active = 1; 852 } 853 } 854 udinit(d); 855 } 856 } 857 858 uddump() 859 { 860 return(ENXIO); 861 } 862