1 /* autoconf.c 4.31 81/07/05 */ 2 3 /* 4 * Setup the system to run on the current machine. 5 * 6 * Configure() is called at boot time and initializes the uba and mba 7 * device tables and the memory controller monitoring. Available 8 * devices are determined (from possibilities mentioned in ioconf.c), 9 * and the drivers are initialized. 10 * 11 * N.B.: A lot of the conditionals based on processor type say 12 * #if VAX780 13 * and 14 * #if VAX750 15 * which may be incorrect after more processors are introduced if they 16 * are like either of these machines. 17 * 18 * TODO: 19 * use pcpu info about whether a ubasr exists 20 */ 21 22 #include "mba.h" 23 24 #include "../h/param.h" 25 #include "../h/systm.h" 26 #include "../h/map.h" 27 #include "../h/nexus.h" 28 #include "../h/pte.h" 29 #include "../h/buf.h" 30 #include "../h/mbareg.h" 31 #include "../h/mbavar.h" 32 #include "../h/dk.h" 33 #include "../h/vm.h" 34 #include "../h/ubareg.h" 35 #include "../h/ubavar.h" 36 #include "../h/mtpr.h" 37 #include "../h/cpu.h" 38 #include "../h/scb.h" 39 #include "../h/mem.h" 40 41 /* 42 * The following several variables are related to 43 * the configuration process, and are used in initializing 44 * the machine. 45 */ 46 int cold; /* if 1, still working on cold-start */ 47 int nexnum; /* current nexus number */ 48 int dkn; /* number of iostat dk numbers assigned so far */ 49 50 /* 51 * Addresses of the (locore) routines which bootstrap us from 52 * hardware traps to C code. Filled into the system control block 53 * as necessary. 54 */ 55 #if NMBA > 0 56 int (*mbaintv[4])() = { Xmba0int, Xmba1int, Xmba2int, Xmba3int }; 57 #endif 58 #if VAX780 59 int (*ubaintv[4])() = { Xua0int, Xua1int, Xua2int, Xua3int }; 60 #endif 61 62 /* 63 * This allocates the space for the per-uba information, 64 * such as buffered data path usage. 65 */ 66 struct uba_hd uba_hd[MAXNUBA]; 67 68 /* 69 * Determine mass storage and memory configuration for a machine. 70 * Get cpu type, and then switch out to machine specific procedures 71 * which will probe adaptors to see what is out there. 72 */ 73 configure() 74 { 75 union cpusid cpusid; 76 register struct percpu *ocp; 77 register int *ip; 78 extern char Sysbase[]; 79 80 cpusid.cpusid = mfpr(SID); 81 for (ocp = percpu; ocp->pc_cputype; ocp++) 82 if (ocp->pc_cputype == cpusid.cpuany.cp_type) { 83 probenexus(ocp); 84 /* 85 * Write protect the scb. It is strange 86 * that this code is here, but this is as soon 87 * as we are done mucking with it, and the 88 * write-enable was done in assembly language 89 * to which we will never return. 90 */ 91 ip = (int *)Sysmap; *ip &= ~PG_PROT; *ip |= PG_KR; 92 mtpr(TBIS, Sysbase); 93 #if GENERIC 94 setconf(); 95 #endif 96 cold = 0; 97 memenable(); 98 return; 99 } 100 printf("cpu type %d not configured\n", cpusid.cpuany.cp_type); 101 asm("halt"); 102 } 103 104 /* 105 * Probe nexus space, finding the interconnects 106 * and setting up and probing mba's and uba's for devices. 107 */ 108 /*ARGSUSED*/ 109 probenexus(pcpu) 110 register struct percpu *pcpu; 111 { 112 register struct nexus *nxv; 113 struct nexus *nxp = pcpu->pc_nexbase; 114 union nexcsr nexcsr; 115 int i; 116 117 nexnum = 0, nxv = nexus; 118 for (; nexnum < pcpu->pc_nnexus; nexnum++, nxp++, nxv++) { 119 nxaccess(nxp, Nexmap[nexnum]); 120 if (badaddr((caddr_t)nxv, 4)) 121 continue; 122 if (pcpu->pc_nextype && pcpu->pc_nextype[nexnum] != NEX_ANY) 123 nexcsr.nex_csr = pcpu->pc_nextype[nexnum]; 124 else 125 nexcsr = nxv->nexcsr; 126 if (nexcsr.nex_csr&NEX_APD) 127 continue; 128 switch (nexcsr.nex_type) { 129 130 case NEX_MBA: 131 printf("mba%d at tr%d\n", nummba, nexnum); 132 if (nummba >= NMBA) { 133 printf("%d mba's", nummba); 134 goto unconfig; 135 } 136 #if NMBA > 0 137 mbafind(nxv, nxp); 138 nummba++; 139 #endif 140 break; 141 142 case NEX_UBA0: 143 case NEX_UBA1: 144 case NEX_UBA2: 145 case NEX_UBA3: 146 printf("uba%d at tr%d\n", numuba, nexnum); 147 if (numuba >= 4) { 148 printf("5 uba's"); 149 goto unsupp; 150 } 151 #if VAX780 152 if (cpu == VAX_780) 153 setscbnex(ubaintv[numuba]); 154 #endif 155 i = nexcsr.nex_type - NEX_UBA0; 156 unifind((struct uba_regs *)nxv, (struct uba_regs *)nxp, 157 umem[i], pcpu->pc_umaddr[i], UMEMmap[i]); 158 #if VAX780 159 if (cpu == VAX_780) 160 ((struct uba_regs *)nxv)->uba_cr = 161 UBACR_IFS|UBACR_BRIE| 162 UBACR_USEFIE|UBACR_SUEFIE; 163 #endif 164 numuba++; 165 break; 166 167 case NEX_DR32: 168 /* there can be more than one... are there other codes??? */ 169 printf("dr32"); 170 goto unsupp; 171 172 case NEX_MEM4: 173 case NEX_MEM4I: 174 case NEX_MEM16: 175 case NEX_MEM16I: 176 printf("mcr%d at tr%d\n", nmcr, nexnum); 177 if (nmcr >= 4) { 178 printf("5 mcr's"); 179 goto unsupp; 180 } 181 mcraddr[nmcr++] = (struct mcr *)nxv; 182 break; 183 184 case NEX_MPM0: 185 case NEX_MPM1: 186 case NEX_MPM2: 187 case NEX_MPM3: 188 printf("mpm"); 189 goto unsupp; 190 191 default: 192 printf("nexus type %x", nexcsr.nex_type); 193 unsupp: 194 printf(" unsupported (at tr %d)\n", nexnum); 195 continue; 196 unconfig: 197 printf(" not configured\n"); 198 continue; 199 } 200 } 201 #if VAX780 202 if (cpu == VAX_780) 203 { int ubawatch(); timeout(ubawatch, (caddr_t)0, hz); } 204 #endif 205 } 206 207 #if NMBA > 0 208 struct mba_device *mbaconfig(); 209 /* 210 * Find devices attached to a particular mba 211 * and look for each device found in the massbus 212 * initialization tables. 213 */ 214 mbafind(nxv, nxp) 215 struct nexus *nxv, *nxp; 216 { 217 register struct mba_regs *mdp; 218 register struct mba_drv *mbd; 219 register struct mba_device *mi; 220 register struct mba_slave *ms; 221 int dn, dt; 222 struct mba_device fnd; 223 224 mdp = (struct mba_regs *)nxv; 225 mba_hd[nummba].mh_mba = mdp; 226 mba_hd[nummba].mh_physmba = (struct mba_regs *)nxp; 227 setscbnex(mbaintv[nummba]); 228 fnd.mi_mba = mdp; 229 fnd.mi_mbanum = nummba; 230 for (mbd = mdp->mba_drv, dn = 0; mbd < &mdp->mba_drv[8]; mbd++, dn++) { 231 dt = mbd->mbd_dt & 0xffff; 232 if (dt == 0) 233 continue; 234 if ((dt&MBDT_TYPE) == MBDT_TU78) { 235 printf("tm04/tu78 unsupported\n"); 236 continue; 237 } 238 if (dt == MBDT_MOH) 239 continue; 240 fnd.mi_drive = dn; 241 if ((mi = mbaconfig(&fnd, dt)) && (dt & MBDT_TAP)) { 242 for (ms = mbsinit; ms->ms_driver; ms++) 243 if (ms->ms_driver == mi->mi_driver && ms->ms_alive == 0 && 244 (ms->ms_ctlr == mi->mi_unit || ms->ms_ctlr=='?')) { 245 mbd->mbd_tc = ms->ms_slave; 246 dt = mbd->mbd_dt; 247 if (dt & MBDT_SPR) { 248 printf("%s%d at %s%d slave %d\n", 249 ms->ms_driver->md_sname, 250 ms->ms_unit, 251 mi->mi_driver->md_dname, 252 mi->mi_unit, 253 ms->ms_slave); 254 ms->ms_alive = 1; 255 ms->ms_ctlr = mi->mi_unit; 256 (*ms->ms_driver->md_slave) 257 (mi, ms); 258 } 259 } 260 } 261 } 262 mdp->mba_cr = MBCR_INIT; 263 mdp->mba_cr = MBCR_IE; 264 } 265 266 /* 267 * Have found a massbus device; 268 * see if it is in the configuration table. 269 * If so, fill in its data. 270 */ 271 struct mba_device * 272 mbaconfig(ni, type) 273 register struct mba_device *ni; 274 register int type; 275 { 276 register struct mba_device *mi; 277 register short *tp; 278 register struct mba_hd *mh; 279 280 for (mi = mbdinit; mi->mi_driver; mi++) { 281 if (mi->mi_alive) 282 continue; 283 tp = mi->mi_driver->md_type; 284 for (mi->mi_type = 0; *tp; tp++, mi->mi_type++) 285 if (*tp == (type&MBDT_TYPE)) 286 goto found; 287 continue; 288 found: 289 #define match(fld) (ni->fld == mi->fld || mi->fld == '?') 290 if (!match(mi_drive) || !match(mi_mbanum)) 291 continue; 292 printf("%s%d at mba%d drive %d", 293 mi->mi_driver->md_dname, mi->mi_unit, 294 ni->mi_mbanum, ni->mi_drive); 295 printf("\n"); 296 mi->mi_alive = 1; 297 mh = &mba_hd[ni->mi_mbanum]; 298 mi->mi_hd = mh; 299 mh->mh_mbip[ni->mi_drive] = mi; 300 mh->mh_ndrive++; 301 mi->mi_mba = ni->mi_mba; 302 mi->mi_drv = &mi->mi_mba->mba_drv[ni->mi_drive]; 303 mi->mi_driver->md_info[mi->mi_unit] = mi; 304 mi->mi_mbanum = ni->mi_mbanum; 305 mi->mi_drive = ni->mi_drive; 306 if (mi->mi_dk && dkn < DK_NDRIVE) 307 mi->mi_dk = dkn++; 308 else 309 mi->mi_dk = -1; 310 (*mi->mi_driver->md_attach)(mi); 311 return (mi); 312 } 313 return (0); 314 } 315 #endif 316 317 /* 318 * Fixctlrmask fixes the masks of the driver ctlr routines 319 * which otherwise save r10 and r11 where the interrupt and br 320 * level are passed through. 321 */ 322 fixctlrmask() 323 { 324 register struct uba_ctlr *um; 325 register struct uba_device *ui; 326 register struct uba_driver *ud; 327 #define phys(a,b) ((b)(((int)(a))&0x7fffffff)) 328 329 for (um = ubminit; ud = phys(um->um_driver, struct uba_driver *); um++) 330 *phys(ud->ud_probe, short *) &= ~0xc00; 331 for (ui = ubdinit; ud = phys(ui->ui_driver, struct uba_driver *); ui++) 332 *phys(ud->ud_probe, short *) &= ~0xc00; 333 } 334 335 /* 336 * Find devices on a UNIBUS. 337 * Uses per-driver routine to set <br,cvec> into <r11,r10>, 338 * and then fills in the tables, with help from a per-driver 339 * slave initialization routine. 340 */ 341 unifind(vubp, pubp, vumem, pumem, memmap) 342 struct uba_regs *vubp, *pubp; 343 caddr_t vumem, pumem; 344 struct pte *memmap; 345 { 346 #ifndef lint 347 register int br, cvec; /* MUST BE r11, r10 */ 348 #else 349 /* 350 * Lint doesn't realize that these 351 * can be initialized asynchronously 352 * when devices interrupt. 353 */ 354 register int br = 0, cvec = 0; 355 #endif 356 register struct uba_device *ui; 357 register struct uba_ctlr *um; 358 u_short *reg, addr; 359 struct uba_hd *uhp; 360 struct uba_driver *udp; 361 int i, (**ivec)(), haveubasr = 0; 362 363 /* 364 * Initialize the UNIBUS, by freeing the map 365 * registers and the buffered data path registers 366 */ 367 uhp = &uba_hd[numuba]; 368 uhp->uh_map = (struct map *)calloc(UAMSIZ * sizeof (struct map)); 369 rminit(uhp->uh_map, NUBMREG, 1, "uba", UAMSIZ); 370 switch (cpu) { 371 #if VAX780 372 case VAX_780: 373 uhp->uh_bdpfree = (1<<NBDP780) - 1; 374 haveubasr = 1; 375 break; 376 #endif 377 #if VAX750 378 case VAX_750: 379 uhp->uh_bdpfree = (1<<NBDP750) - 1; 380 break; 381 #endif 382 #if VAX7ZZ 383 case VAX_7ZZ: 384 break; 385 #endif 386 } 387 388 /* 389 * Save virtual and physical addresses 390 * of adaptor, and allocate and initialize 391 * the UNIBUS interrupt vector. 392 */ 393 uhp->uh_uba = vubp; 394 uhp->uh_physuba = pubp; 395 /* HAVE TO DO SOMETHING SPECIAL FOR SECOND UNIBUS ON COMETS HERE */ 396 if (numuba == 0) 397 uhp->uh_vec = UNIvec; 398 else 399 uhp->uh_vec = (int(**)())calloc(512); 400 for (i = 0; i < 128; i++) 401 uhp->uh_vec[i] = 402 scbentry(&catcher[i*2], SCB_ISTACK); 403 /* THIS IS A CHEAT: USING THE FACT THAT UMEM and NEXI ARE SAME SIZE */ 404 nxaccess((struct nexus *)pumem, memmap); 405 #if VAX780 406 if (haveubasr) { 407 vubp->uba_sr = vubp->uba_sr; 408 vubp->uba_cr = UBACR_IFS|UBACR_BRIE; 409 } 410 #endif 411 /* 412 * Map the first page of UNIBUS i/o 413 * space to the first page of memory 414 * for devices which will need to dma 415 * output to produce an interrupt. 416 */ 417 *(int *)(&vubp->uba_map[0]) = UBAMR_MRV; 418 419 #define ubaddr(off) (u_short *)((int)vumem + ((off)&0x1fff)) 420 /* 421 * Check each unibus mass storage controller. 422 * For each one which is potentially on this uba, 423 * see if it is really there, and if it is record it and 424 * then go looking for slaves. 425 */ 426 for (um = ubminit; udp = um->um_driver; um++) { 427 if (um->um_ubanum != numuba && um->um_ubanum != '?') 428 continue; 429 addr = (u_short)um->um_addr; 430 reg = ubaddr(addr); 431 if (badaddr((caddr_t)reg, 2)) 432 continue; 433 #if VAX780 434 if (haveubasr && vubp->uba_sr) { 435 vubp->uba_sr = vubp->uba_sr; 436 continue; 437 } 438 #endif 439 cvec = 0x200; 440 i = (*udp->ud_probe)(reg); 441 #if VAX780 442 if (haveubasr && vubp->uba_sr) { 443 vubp->uba_sr = vubp->uba_sr; 444 continue; 445 } 446 #endif 447 if (i == 0) 448 continue; 449 printf("%s%d at uba%d csr %o ", 450 udp->ud_mname, um->um_ctlr, numuba, addr); 451 if (cvec == 0) { 452 printf("zero vector\n"); 453 continue; 454 } 455 if (cvec == 0x200) { 456 printf("didn't interrupt\n"); 457 continue; 458 } 459 printf("vec %o, ipl %x\n", cvec, br); 460 um->um_alive = 1; 461 um->um_ubanum = numuba; 462 um->um_hd = &uba_hd[numuba]; 463 um->um_addr = (caddr_t)reg; 464 udp->ud_minfo[um->um_ctlr] = um; 465 for (ivec = um->um_intr; *ivec; ivec++) { 466 um->um_hd->uh_vec[cvec/4] = 467 scbentry(*ivec, SCB_ISTACK); 468 cvec += 4; 469 } 470 for (ui = ubdinit; ui->ui_driver; ui++) { 471 if (ui->ui_driver != udp || ui->ui_alive || 472 ui->ui_ctlr != um->um_ctlr && ui->ui_ctlr != '?' || 473 ui->ui_ubanum != numuba && ui->ui_ubanum != '?') 474 continue; 475 if ((*udp->ud_slave)(ui, reg)) { 476 ui->ui_alive = 1; 477 ui->ui_ctlr = um->um_ctlr; 478 ui->ui_ubanum = numuba; 479 ui->ui_hd = &uba_hd[numuba]; 480 ui->ui_addr = (caddr_t)reg; 481 ui->ui_physaddr = pumem + (addr&0x1fff); 482 if (ui->ui_dk && dkn < DK_NDRIVE) 483 ui->ui_dk = dkn++; 484 else 485 ui->ui_dk = -1; 486 ui->ui_mi = um; 487 /* ui_type comes from driver */ 488 udp->ud_dinfo[ui->ui_unit] = ui; 489 printf("%s%d at %s%d slave %d\n", 490 udp->ud_dname, ui->ui_unit, 491 udp->ud_mname, um->um_ctlr, ui->ui_slave); 492 (*udp->ud_attach)(ui); 493 } 494 } 495 } 496 /* 497 * Now look for non-mass storage peripherals. 498 */ 499 for (ui = ubdinit; udp = ui->ui_driver; ui++) { 500 if (ui->ui_ubanum != numuba && ui->ui_ubanum != '?' || 501 ui->ui_alive || ui->ui_slave != -1) 502 continue; 503 addr = (u_short)ui->ui_addr; 504 reg = ubaddr(addr); 505 if (badaddr((caddr_t)reg, 2)) 506 continue; 507 #if VAX780 508 if (haveubasr && vubp->uba_sr) { 509 vubp->uba_sr = vubp->uba_sr; 510 continue; 511 } 512 #endif 513 cvec = 0x200; 514 i = (*udp->ud_probe)(reg); 515 #if VAX780 516 if (haveubasr && vubp->uba_sr) { 517 vubp->uba_sr = vubp->uba_sr; 518 continue; 519 } 520 #endif 521 if (i == 0) 522 continue; 523 printf("%s%d at uba%d csr %o ", 524 ui->ui_driver->ud_dname, ui->ui_unit, numuba, addr); 525 if (cvec == 0) { 526 printf("zero vector\n"); 527 continue; 528 } 529 if (cvec == 0x200) { 530 printf("didn't interrupt\n"); 531 continue; 532 } 533 printf("vec %o, ipl %x\n", cvec, br); 534 ui->ui_hd = &uba_hd[numuba]; 535 for (ivec = ui->ui_intr; *ivec; ivec++) { 536 ui->ui_hd->uh_vec[cvec/4] = 537 scbentry(*ivec, SCB_ISTACK); 538 cvec += 4; 539 } 540 ui->ui_alive = 1; 541 ui->ui_ubanum = numuba; 542 ui->ui_addr = (caddr_t)reg; 543 ui->ui_physaddr = pumem + (addr&0x1fff); 544 ui->ui_dk = -1; 545 /* ui_type comes from driver */ 546 udp->ud_dinfo[ui->ui_unit] = ui; 547 (*udp->ud_attach)(ui); 548 } 549 } 550 551 setscbnex(fn) 552 int (*fn)(); 553 { 554 register struct scb *scbp = &scb; 555 556 scbp->scb_ipl14[nexnum] = scbp->scb_ipl15[nexnum] = 557 scbp->scb_ipl16[nexnum] = scbp->scb_ipl17[nexnum] = 558 scbentry(fn, SCB_ISTACK); 559 } 560 561 /* 562 * Make a nexus accessible at physical address phys 563 * by mapping kernel ptes starting at pte. 564 * 565 * WE LEAVE ALL NEXI MAPPED; THIS IS PERHAPS UNWISE 566 * SINCE MISSING NEXI DONT RESPOND. BUT THEN AGAIN 567 * PRESENT NEXI DONT RESPOND TO ALL OF THEIR ADDRESS SPACE. 568 */ 569 nxaccess(physa, pte) 570 struct nexus *physa; 571 register struct pte *pte; 572 { 573 register int i = btop(sizeof (struct nexus)); 574 register unsigned v = btop(physa); 575 576 do 577 *(int *)pte++ = PG_V|PG_KW|v++; 578 while (--i > 0); 579 mtpr(TBIA, 0); 580 } 581