xy.c revision 1.15
1 /* $NetBSD: xy.c,v 1.15 1997/06/24 00:58:16 thorpej Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: $NetBSD: xy.c,v 1.15 1997/06/24 00:58:16 thorpej Exp $ 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <machine/autoconf.h> 81 #include <machine/sun_disklabel.h> 82 #include <machine/dvma.h> 83 84 #include <sun3/dev/xyreg.h> 85 #include <sun3/dev/xyvar.h> 86 #include <sun3/dev/xio.h> 87 88 /* 89 * macros 90 */ 91 92 /* 93 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 94 */ 95 #define XYC_GO(XYC, ADDR) { \ 96 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 97 (ADDR) = ((ADDR) >> 8); \ 98 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 99 (ADDR) = ((ADDR) >> 8); \ 100 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 101 (ADDR) = ((ADDR) >> 8); \ 102 (XYC)->xyc_reloc_hi = (ADDR); \ 103 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 104 } 105 106 /* 107 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 108 */ 109 110 #define XYC_DONE(SC,ER) { \ 111 if ((ER) == XY_ERR_AOK) { \ 112 (ER) = (SC)->ciorq->errno; \ 113 (SC)->ciorq->mode = XY_SUB_FREE; \ 114 wakeup((SC)->ciorq); \ 115 } \ 116 } 117 118 /* 119 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 120 */ 121 122 #define XYC_ADVANCE(IORQ, N) { \ 123 if (N) { \ 124 (IORQ)->sectcnt -= (N); \ 125 (IORQ)->blockno += (N); \ 126 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 127 } \ 128 } 129 130 /* 131 * note - addresses you can sleep on: 132 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 133 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 134 */ 135 136 137 /* 138 * function prototypes 139 * "xyc_*" functions are internal, all others are external interfaces 140 */ 141 142 /* internals */ 143 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 144 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 145 char *xyc_e2str __P((int)); 146 int xyc_entoact __P((int)); 147 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 148 struct xy_iopb *, int)); 149 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 150 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 151 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 152 int xyc_remove_iorq __P((struct xyc_softc *)); 153 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 154 struct xy_softc *)); 155 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 156 struct xy_softc *, int, u_long, int, 157 caddr_t, struct buf *)); 158 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 159 int xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 160 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 161 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 162 void xyc_tick __P((void *)); 163 int xyc_unbusy __P((struct xyc *, int)); 164 int xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 165 166 /* machine interrupt hook */ 167 int xycintr __P((void *)); 168 169 /* bdevsw, cdevsw */ 170 bdev_decl(xy); 171 cdev_decl(xy); 172 173 /* autoconf */ 174 int xycmatch __P((struct device *, struct cfdata *, void *)); 175 void xycattach __P((struct device *, struct device *, void *)); 176 int xymatch __P((struct device *, struct cfdata *, void *)); 177 void xyattach __P((struct device *, struct device *, void *)); 178 int xyc_print __P((void *, char *name)); 179 180 static void xydummystrat __P((struct buf *)); 181 int xygetdisklabel __P((struct xy_softc *, void *)); 182 183 /* 184 * cfdrivers: device driver interface to autoconfig 185 */ 186 187 struct cfattach xyc_ca = { 188 sizeof(struct xyc_softc), xycmatch, xycattach 189 }; 190 191 struct cfdriver xyc_cd = { 192 NULL, "xyc", DV_DULL 193 }; 194 195 struct cfattach xy_ca = { 196 sizeof(struct xy_softc), xymatch, xyattach 197 }; 198 199 struct cfdriver xy_cd = { 200 NULL, "xy", DV_DISK 201 }; 202 203 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 204 int driveno; /* unit number */ 205 char *dvmabuf; /* scratch buffer for reading disk label */ 206 int fullmode; /* submit mode */ 207 int booting; /* are we booting or not? */ 208 }; 209 210 /* 211 * dkdriver 212 */ 213 214 struct dkdriver xydkdriver = { xystrategy }; 215 216 /* 217 * start: disk label fix code (XXX) 218 */ 219 220 static void *xy_labeldata; 221 222 static void 223 xydummystrat(bp) 224 struct buf *bp; 225 { 226 if (bp->b_bcount != XYFM_BPS) 227 panic("xydummystrat"); 228 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 229 bp->b_flags |= B_DONE; 230 bp->b_flags &= ~B_BUSY; 231 } 232 233 int 234 xygetdisklabel(xy, b) 235 struct xy_softc *xy; 236 void *b; 237 { 238 char *err; 239 struct sun_disklabel *sdl; 240 241 /* We already have the label data in `b'; setup for dummy strategy */ 242 xy_labeldata = b; 243 244 /* Required parameter for readdisklabel() */ 245 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 246 247 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 248 xydummystrat, 249 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 250 if (err) { 251 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 252 return(XY_ERR_FAIL); 253 } 254 255 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 256 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 257 if (sdl->sl_magic == SUN_DKMAGIC) 258 xy->pcyl = sdl->sl_pcyl; 259 else { 260 printf("%s: WARNING: no `pcyl' in disk label.\n", 261 xy->sc_dev.dv_xname); 262 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 263 xy->sc_dk.dk_label->d_acylinders; 264 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 265 xy->sc_dev.dv_xname, xy->pcyl); 266 } 267 268 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 269 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 270 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 271 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 272 xy->sectpercyl = xy->nhead * xy->nsect; 273 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 274 * sun->bsd */ 275 return(XY_ERR_AOK); 276 } 277 278 /* 279 * end: disk label fix code (XXX) 280 */ 281 282 /* 283 * a u t o c o n f i g f u n c t i o n s 284 */ 285 286 /* 287 * xycmatch: determine if xyc is present or not. we do a 288 * soft reset to detect the xyc. 289 */ 290 291 int xycmatch(parent, cf, aux) 292 struct device *parent; 293 struct cfdata *cf; 294 void *aux; 295 { 296 struct confargs *ca = aux; 297 int x; 298 299 if (ca->ca_bustype != BUS_VME16) 300 return (0); 301 302 /* Default interrupt priority always splbio==2 */ 303 if (ca->ca_intpri == -1) 304 ca->ca_intpri = 2; 305 306 x = bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1); 307 if (x == -1) 308 return (0); 309 310 return (1); 311 } 312 313 /* 314 * xycattach: attach controller 315 */ 316 void 317 xycattach(parent, self, aux) 318 struct device *parent, *self; 319 void *aux; 320 321 { 322 struct xyc_softc *xyc = (void *) self; 323 struct confargs *ca = aux; 324 struct xyc_attach_args xa; 325 int lcv, err, pri, res, pbsz; 326 void *tmp, *tmp2; 327 u_long ultmp; 328 329 /* get addressing and intr level stuff from autoconfig and load it 330 * into our xyc_softc. */ 331 332 xyc->xyc = (struct xyc *) 333 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 334 xyc->ipl = ca->ca_intpri; 335 xyc->vector = ca->ca_intvec; 336 xyc->no_ols = 0; /* XXX should be from config */ 337 338 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 339 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 340 341 /* 342 * allocate and zero buffers 343 * check boundaries of the KVA's ... all IOPBs must reside in 344 * the same 64K region. 345 */ 346 347 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 348 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 349 ultmp = (u_long) tmp; 350 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 351 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 352 dvma_free(tmp2, pbsz); 353 ultmp = (u_long) tmp; 354 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 355 printf("%s: can't alloc IOPB mem in 64K\n", 356 xyc->sc_dev.dv_xname); 357 return; 358 } 359 } 360 bzero(tmp, pbsz); 361 xyc->iopbase = tmp; 362 xyc->dvmaiopb = (struct xy_iopb *) 363 dvma_kvtopa((long) xyc->iopbase, BUS_VME16); 364 xyc->reqs = (struct xy_iorq *) 365 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 366 if (xyc->reqs == NULL) 367 panic("xyc malloc"); 368 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 369 370 /* 371 * init iorq to iopb pointers, and non-zero fields in the 372 * iopb which never change. 373 */ 374 375 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 376 xyc->xy_chain[lcv] = NULL; 377 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 378 xyc->iopbase[lcv].asr = 1; /* always the same */ 379 xyc->iopbase[lcv].eef = 1; /* always the same */ 380 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 381 xyc->iopbase[lcv].aud = 1; /* always the same */ 382 xyc->iopbase[lcv].relo = 1; /* always the same */ 383 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 384 } 385 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 386 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 387 xyc->xy_hand = 0; 388 389 /* read controller parameters and insure we have a 450/451 */ 390 391 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 392 res = xyc->ciopb->ctyp; 393 XYC_DONE(xyc, err); 394 if (res != XYCT_450) { 395 if (err) 396 printf(": %s: ", xyc_e2str(err)); 397 printf(": doesn't identify as a 450/451\n"); 398 return; 399 } 400 printf(": Xylogics 450/451"); 401 if (xyc->no_ols) 402 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 403 printf("\n"); 404 if (err) { 405 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 406 xyc_e2str(err)); 407 return; 408 } 409 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 410 printf("%s: 24 bit addressing turned off\n", 411 xyc->sc_dev.dv_xname); 412 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 413 printf("to enable 24 bit mode and this driver\n"); 414 return; 415 } 416 417 /* link in interrupt with higher level software */ 418 isr_add_vectored(xycintr, (void *)xyc, 419 ca->ca_intpri, ca->ca_intvec); 420 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 421 422 /* now we must look for disks using autoconfig */ 423 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 424 xa.fullmode = XY_SUB_POLL; 425 xa.booting = 1; 426 427 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 428 (void) config_found(self, (void *) &xa, xyc_print); 429 430 dvma_free(xa.dvmabuf, XYFM_BPS); 431 432 /* start the watchdog clock */ 433 timeout(xyc_tick, xyc, XYC_TICKCNT); 434 } 435 436 int 437 xyc_print(aux, name) 438 void *aux; 439 char *name; 440 { 441 struct xyc_attach_args *xa = aux; 442 443 if (name != NULL) 444 printf("%s: ", name); 445 446 if (xa->driveno != -1) 447 printf(" drive %d", xa->driveno); 448 449 return UNCONF; 450 } 451 452 /* 453 * xymatch: probe for disk. 454 * 455 * note: we almost always say disk is present. this allows us to 456 * spin up and configure a disk after the system is booted (we can 457 * call xyattach!). 458 */ 459 int 460 xymatch(parent, cf, aux) 461 struct device *parent; 462 struct cfdata *cf; 463 void *aux; 464 465 { 466 struct xyc_softc *xyc = (void *) parent; 467 struct xyc_attach_args *xa = aux; 468 469 /* looking for autoconf wildcard or exact match */ 470 471 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != xa->driveno) 472 return 0; 473 474 return 1; 475 476 } 477 478 /* 479 * xyattach: attach a disk. this can be called from autoconf and also 480 * from xyopen/xystrategy. 481 */ 482 void 483 xyattach(parent, self, aux) 484 struct device *parent, *self; 485 void *aux; 486 487 { 488 struct xy_softc *xy = (void *) self, *oxy; 489 struct xyc_softc *xyc = (void *) parent; 490 struct xyc_attach_args *xa = aux; 491 int res, err, spt, mb, blk, lcv, fmode, s, newstate; 492 struct dkbad *dkb; 493 struct bootpath *bp; 494 495 /* 496 * Always re-initialize the disk structure. We want statistics 497 * to start with a clean slate. 498 */ 499 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 500 xy->sc_dk.dk_driver = &xydkdriver; 501 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 502 503 /* if booting, init the xy_softc */ 504 505 if (xa->booting) { 506 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 507 xy->flags = 0; 508 xy->parent = xyc; 509 510 /* init queue of waiting bufs */ 511 512 xy->xyq.b_active = 0; 513 xy->xyq.b_actf = 0; 514 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 515 516 xy->xyrq = &xyc->reqs[xa->driveno]; 517 518 } 519 xy->xy_drive = xa->driveno; 520 fmode = xa->fullmode; 521 xyc->sc_drives[xa->driveno] = xy; 522 523 /* if not booting, make sure we are the only process in the attach for 524 * this drive. if locked out, sleep on it. */ 525 526 if (!xa->booting) { 527 s = splbio(); 528 while (xy->state == XY_DRIVE_ATTACHING) { 529 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 530 splx(s); 531 return; 532 } 533 } 534 printf("%s at %s", 535 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 536 } 537 /* we now have control */ 538 539 xy->state = XY_DRIVE_ATTACHING; 540 newstate = XY_DRIVE_UNKNOWN; 541 542 /* first try and reset the drive */ 543 544 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 545 XYC_DONE(xyc, err); 546 if (err == XY_ERR_DNRY) { 547 printf(" drive %d: off-line\n", xa->driveno); 548 goto done; 549 } 550 if (err) { 551 printf(": ERROR 0x%02x (%s)\n", err, xyc_e2str(err)); 552 goto done; 553 } 554 printf(" drive %d: ready", xa->driveno); 555 556 /* 557 * now set drive parameters (to semi-bogus values) so we can read the 558 * disk label. 559 */ 560 xy->pcyl = xy->ncyl = 1; 561 xy->acyl = 0; 562 xy->nhead = 1; 563 xy->nsect = 1; 564 xy->sectpercyl = 1; 565 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 566 xy->dkb.bt_bad[lcv].bt_cyl = 567 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 568 569 /* read disk label */ 570 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 571 xy->drive_type++) { 572 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 573 xa->dvmabuf, fmode); 574 XYC_DONE(xyc, err); 575 if (err == XY_ERR_AOK) break; 576 } 577 578 if (err != XY_ERR_AOK) { 579 printf("\n%s: reading disk label failed: %s\n", 580 xy->sc_dev.dv_xname, xyc_e2str(err)); 581 goto done; 582 } 583 printf(" (drive type %d)\n", xy->drive_type); 584 585 newstate = XY_DRIVE_NOLABEL; 586 587 xy->hw_spt = spt = 0; /* XXX needed ? */ 588 /* Attach the disk: must be before getdisklabel to malloc label */ 589 disk_attach(&xy->sc_dk); 590 591 if (xygetdisklabel(xy, xa->dvmabuf) != XY_ERR_AOK) 592 goto done; 593 594 /* inform the user of what is up */ 595 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 596 xa->dvmabuf, xy->pcyl); 597 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 598 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 599 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 600 XYFM_BPS); 601 602 /* 603 * 450/451 stupidity: the drive type is encoded into the format 604 * of the disk. the drive type in the IOPB must match the drive 605 * type in the format, or you will not be able to do I/O to the 606 * disk (you get header not found errors). if you have two drives 607 * of different sizes that have the same drive type in their 608 * formatting then you are out of luck. 609 * 610 * this problem was corrected in the 753/7053. 611 */ 612 613 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 614 oxy = xyc->sc_drives[lcv]; 615 if (oxy == NULL || oxy == xy) continue; 616 if (oxy->drive_type != xy->drive_type) continue; 617 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 618 xy->nhead != oxy->nhead) { 619 printf("%s: %s and %s must be the same size!\n", 620 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 621 oxy->sc_dev.dv_xname); 622 panic("xy drive size mismatch"); 623 } 624 } 625 626 627 /* now set the real drive parameters! */ 628 629 blk = (xy->nsect - 1) + 630 ((xy->nhead - 1) * xy->nsect) + 631 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 632 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 633 XYC_DONE(xyc, err); 634 if (err) { 635 printf("%s: write drive size failed: %s\n", 636 xy->sc_dev.dv_xname, xyc_e2str(err)); 637 goto done; 638 } 639 newstate = XY_DRIVE_ONLINE; 640 641 /* 642 * read bad144 table. this table resides on the first sector of the 643 * last track of the disk (i.e. second cyl of "acyl" area). 644 */ 645 646 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 647 /* last cyl */ 648 (xy->nhead - 1) * xy->nsect; /* last head */ 649 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 650 xa->dvmabuf, fmode); 651 XYC_DONE(xyc, err); 652 if (err) { 653 printf("%s: reading bad144 failed: %s\n", 654 xy->sc_dev.dv_xname, xyc_e2str(err)); 655 goto done; 656 } 657 658 /* check dkbad for sanity */ 659 dkb = (struct dkbad *) xa->dvmabuf; 660 for (lcv = 0; lcv < 126; lcv++) { 661 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 662 dkb->bt_bad[lcv].bt_cyl == 0) && 663 dkb->bt_bad[lcv].bt_trksec == 0xffff) 664 continue; /* blank */ 665 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 666 break; 667 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 668 break; 669 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 670 break; 671 } 672 if (lcv != 126) { 673 printf("%s: warning: invalid bad144 sector!\n", 674 xy->sc_dev.dv_xname); 675 } else { 676 bcopy(xa->dvmabuf, &xy->dkb, XYFM_BPS); 677 } 678 679 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 680 681 done: 682 xy->state = newstate; 683 if (!xa->booting) { 684 wakeup(&xy->state); 685 splx(s); 686 } 687 } 688 689 /* 690 * end of autoconfig functions 691 */ 692 693 /* 694 * { b , c } d e v s w f u n c t i o n s 695 */ 696 697 /* 698 * xyclose: close device 699 */ 700 int 701 xyclose(dev, flag, fmt) 702 dev_t dev; 703 int flag, fmt; 704 705 { 706 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 707 int part = DISKPART(dev); 708 709 /* clear mask bits */ 710 711 switch (fmt) { 712 case S_IFCHR: 713 xy->sc_dk.dk_copenmask &= ~(1 << part); 714 break; 715 case S_IFBLK: 716 xy->sc_dk.dk_bopenmask &= ~(1 << part); 717 break; 718 } 719 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 720 721 return 0; 722 } 723 724 /* 725 * xydump: crash dump system 726 */ 727 int 728 xydump(dev) 729 dev_t dev; 730 731 { 732 int unit, part; 733 struct xy_softc *xy; 734 735 unit = DISKUNIT(dev); 736 if (unit >= xy_cd.cd_ndevs) 737 return ENXIO; 738 part = DISKPART(dev); 739 740 xy = xy_cd.cd_devs[unit]; 741 742 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 743 'a' + part); 744 745 return ENXIO; 746 747 /* outline: globals: "dumplo" == sector number of partition to start 748 * dump at (convert to physical sector with partition table) 749 * "dumpsize" == size of dump in clicks "physmem" == size of physical 750 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 751 * physmem) 752 * 753 * dump a copy of physical memory to the dump device starting at sector 754 * "dumplo" in the swap partition (make sure > 0). map in pages as 755 * we go. use polled I/O. 756 * 757 * XXX how to handle NON_CONTIG? */ 758 759 } 760 761 /* 762 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 763 */ 764 int 765 xyioctl(dev, command, addr, flag, p) 766 dev_t dev; 767 u_long command; 768 caddr_t addr; 769 int flag; 770 struct proc *p; 771 772 { 773 struct xy_softc *xy; 774 struct xd_iocmd *xio; 775 int error, s, unit; 776 777 unit = DISKUNIT(dev); 778 779 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 780 return (ENXIO); 781 782 /* switch on ioctl type */ 783 784 switch (command) { 785 case DIOCSBAD: /* set bad144 info */ 786 if ((flag & FWRITE) == 0) 787 return EBADF; 788 s = splbio(); 789 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 790 splx(s); 791 return 0; 792 793 case DIOCGDINFO: /* get disk label */ 794 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 795 return 0; 796 797 case DIOCGPART: /* get partition info */ 798 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 799 ((struct partinfo *) addr)->part = 800 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 801 return 0; 802 803 case DIOCSDINFO: /* set disk label */ 804 if ((flag & FWRITE) == 0) 805 return EBADF; 806 error = setdisklabel(xy->sc_dk.dk_label, 807 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 808 xy->sc_dk.dk_cpulabel); 809 if (error == 0) { 810 if (xy->state == XY_DRIVE_NOLABEL) 811 xy->state = XY_DRIVE_ONLINE; 812 } 813 return error; 814 815 case DIOCWLABEL: /* change write status of disk label */ 816 if ((flag & FWRITE) == 0) 817 return EBADF; 818 if (*(int *) addr) 819 xy->flags |= XY_WLABEL; 820 else 821 xy->flags &= ~XY_WLABEL; 822 return 0; 823 824 case DIOCWDINFO: /* write disk label */ 825 if ((flag & FWRITE) == 0) 826 return EBADF; 827 error = setdisklabel(xy->sc_dk.dk_label, 828 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 829 xy->sc_dk.dk_cpulabel); 830 if (error == 0) { 831 if (xy->state == XY_DRIVE_NOLABEL) 832 xy->state = XY_DRIVE_ONLINE; 833 834 /* Simulate opening partition 0 so write succeeds. */ 835 xy->sc_dk.dk_openmask |= (1 << 0); 836 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 837 xystrategy, xy->sc_dk.dk_label, 838 xy->sc_dk.dk_cpulabel); 839 xy->sc_dk.dk_openmask = 840 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 841 } 842 return error; 843 844 case DIOSXDCMD: 845 xio = (struct xd_iocmd *) addr; 846 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 847 return (error); 848 return (xyc_ioctlcmd(xy, dev, xio)); 849 850 default: 851 return ENOTTY; 852 } 853 } 854 855 /* 856 * xyopen: open drive 857 */ 858 859 int 860 xyopen(dev, flag, fmt) 861 dev_t dev; 862 int flag, fmt; 863 864 { 865 int unit, part; 866 struct xy_softc *xy; 867 struct xyc_attach_args xa; 868 869 /* first, could it be a valid target? */ 870 871 unit = DISKUNIT(dev); 872 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 873 return (ENXIO); 874 part = DISKPART(dev); 875 876 /* do we need to attach the drive? */ 877 878 if (xy->state == XY_DRIVE_UNKNOWN) { 879 xa.driveno = xy->xy_drive; 880 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 881 xa.fullmode = XY_SUB_WAIT; 882 xa.booting = 0; 883 xyattach((struct device *) xy->parent, 884 (struct device *) xy, &xa); 885 dvma_free(xa.dvmabuf, XYFM_BPS); 886 if (xy->state == XY_DRIVE_UNKNOWN) { 887 return (EIO); 888 } 889 } 890 /* check for partition */ 891 892 if (part != RAW_PART && 893 (part >= xy->sc_dk.dk_label->d_npartitions || 894 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 895 return (ENXIO); 896 } 897 /* set open masks */ 898 899 switch (fmt) { 900 case S_IFCHR: 901 xy->sc_dk.dk_copenmask |= (1 << part); 902 break; 903 case S_IFBLK: 904 xy->sc_dk.dk_bopenmask |= (1 << part); 905 break; 906 } 907 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 908 909 return 0; 910 } 911 912 int 913 xyread(dev, uio) 914 dev_t dev; 915 struct uio *uio; 916 { 917 918 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 919 } 920 921 int 922 xywrite(dev, uio) 923 dev_t dev; 924 struct uio *uio; 925 { 926 927 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 928 } 929 930 931 /* 932 * xysize: return size of a partition for a dump 933 */ 934 935 int 936 xysize(dev) 937 dev_t dev; 938 939 { 940 struct xy_softc *xysc; 941 int unit, part, size, omask; 942 943 /* valid unit? */ 944 unit = DISKUNIT(dev); 945 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 946 return (-1); 947 948 part = DISKPART(dev); 949 omask = xysc->sc_dk.dk_openmask & (1 << part); 950 951 if (omask == 0 && xyopen(dev, 0, S_IFBLK) != 0) 952 return (-1); 953 954 /* do it */ 955 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 956 size = -1; /* only give valid size for swap partitions */ 957 else 958 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 959 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 960 if (omask == 0 && xyclose(dev, 0, S_IFBLK) != 0) 961 return (-1); 962 return (size); 963 } 964 965 /* 966 * xystrategy: buffering system interface to xy. 967 */ 968 969 void 970 xystrategy(bp) 971 struct buf *bp; 972 973 { 974 struct xy_softc *xy; 975 struct xyc_softc *parent; 976 struct buf *wq; 977 int s, unit; 978 struct xyc_attach_args xa; 979 980 unit = DISKUNIT(bp->b_dev); 981 982 /* check for live device */ 983 984 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 985 bp->b_blkno < 0 || 986 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 987 bp->b_error = EINVAL; 988 goto bad; 989 } 990 /* do we need to attach the drive? */ 991 992 if (xy->state == XY_DRIVE_UNKNOWN) { 993 xa.driveno = xy->xy_drive; 994 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 995 xa.fullmode = XY_SUB_WAIT; 996 xa.booting = 0; 997 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 998 dvma_free(xa.dvmabuf, XYFM_BPS); 999 if (xy->state == XY_DRIVE_UNKNOWN) { 1000 bp->b_error = EIO; 1001 goto bad; 1002 } 1003 } 1004 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1005 /* no I/O to unlabeled disks, unless raw partition */ 1006 bp->b_error = EIO; 1007 goto bad; 1008 } 1009 /* short circuit zero length request */ 1010 1011 if (bp->b_bcount == 0) 1012 goto done; 1013 1014 /* check bounds with label (disksubr.c). Determine the size of the 1015 * transfer, and make sure it is within the boundaries of the 1016 * partition. Adjust transfer if needed, and signal errors or early 1017 * completion. */ 1018 1019 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1020 (xy->flags & XY_WLABEL) != 0) <= 0) 1021 goto done; 1022 1023 /* 1024 * now we know we have a valid buf structure that we need to do I/O 1025 * on. 1026 */ 1027 1028 s = splbio(); /* protect the queues */ 1029 1030 disksort(&xy->xyq, bp); 1031 1032 /* start 'em up */ 1033 1034 xyc_start(xy->parent, NULL); 1035 1036 /* done! */ 1037 1038 splx(s); 1039 return; 1040 1041 bad: /* tells upper layers we have an error */ 1042 bp->b_flags |= B_ERROR; 1043 done: /* tells upper layers we are done with this 1044 * buf */ 1045 bp->b_resid = bp->b_bcount; 1046 biodone(bp); 1047 } 1048 /* 1049 * end of {b,c}devsw functions 1050 */ 1051 1052 /* 1053 * i n t e r r u p t f u n c t i o n 1054 * 1055 * xycintr: hardware interrupt. 1056 */ 1057 int 1058 xycintr(v) 1059 void *v; 1060 1061 { 1062 struct xyc_softc *xycsc = v; 1063 struct xy_softc *xy; 1064 struct buf *bp; 1065 1066 /* kick the event counter */ 1067 1068 xycsc->sc_intrcnt.ev_count++; 1069 1070 /* remove as many done IOPBs as possible */ 1071 1072 xyc_remove_iorq(xycsc); 1073 1074 /* start any iorq's already waiting */ 1075 1076 xyc_start(xycsc, NULL); 1077 1078 return (1); 1079 } 1080 /* 1081 * end of interrupt function 1082 */ 1083 1084 /* 1085 * i n t e r n a l f u n c t i o n s 1086 */ 1087 1088 /* 1089 * xyc_rqinit: fill out the fields of an I/O request 1090 */ 1091 1092 inline void 1093 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1094 struct xy_iorq *rq; 1095 struct xyc_softc *xyc; 1096 struct xy_softc *xy; 1097 int md; 1098 u_long blk; 1099 int cnt; 1100 caddr_t db; 1101 struct buf *bp; 1102 { 1103 rq->xyc = xyc; 1104 rq->xy = xy; 1105 rq->ttl = XYC_MAXTTL + 10; 1106 rq->mode = md; 1107 rq->tries = rq->errno = rq->lasterror = 0; 1108 rq->blockno = blk; 1109 rq->sectcnt = cnt; 1110 rq->dbuf = rq->dbufbase = db; 1111 rq->buf = bp; 1112 } 1113 1114 /* 1115 * xyc_rqtopb: load up an IOPB based on an iorq 1116 */ 1117 1118 void 1119 xyc_rqtopb(iorq, iopb, cmd, subfun) 1120 struct xy_iorq *iorq; 1121 struct xy_iopb *iopb; 1122 int cmd, subfun; 1123 1124 { 1125 u_long block, dp; 1126 1127 /* normal IOPB case, standard stuff */ 1128 1129 /* chain bit handled later */ 1130 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1131 iopb->com = cmd; 1132 iopb->errno = 0; 1133 iopb->errs = 0; 1134 iopb->done = 0; 1135 if (iorq->xy) { 1136 iopb->unit = iorq->xy->xy_drive; 1137 iopb->dt = iorq->xy->drive_type; 1138 } else { 1139 iopb->unit = 0; 1140 iopb->dt = 0; 1141 } 1142 block = iorq->blockno; 1143 if (iorq->xy == NULL || block == 0) { 1144 iopb->sect = iopb->head = iopb->cyl = 0; 1145 } else { 1146 iopb->sect = block % iorq->xy->nsect; 1147 block = block / iorq->xy->nsect; 1148 iopb->head = block % iorq->xy->nhead; 1149 block = block / iorq->xy->nhead; 1150 iopb->cyl = block; 1151 } 1152 iopb->scnt = iorq->sectcnt; 1153 if (iorq->dbuf == NULL) { 1154 iopb->dataa = 0; 1155 iopb->datar = 0; 1156 } else { 1157 dp = dvma_kvtopa((long)iorq->dbuf, BUS_VME16); 1158 iopb->dataa = (dp & 0xffff); 1159 iopb->datar = ((dp & 0xff0000) >> 16); 1160 } 1161 iopb->subfn = subfun; 1162 } 1163 1164 1165 /* 1166 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1167 */ 1168 1169 int 1170 xyc_unbusy(xyc, del) 1171 1172 struct xyc *xyc; 1173 int del; 1174 1175 { 1176 while (del-- > 0) { 1177 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1178 break; 1179 DELAY(1); 1180 } 1181 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1182 } 1183 1184 /* 1185 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1186 * note that NORM requests are handled seperately. 1187 */ 1188 int 1189 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1190 struct xyc_softc *xycsc; 1191 int cmd, subfn, unit, block, scnt; 1192 char *dptr; 1193 int fullmode; 1194 1195 { 1196 int submode = XY_STATE(fullmode), retry; 1197 u_long dp; 1198 struct xy_iorq *iorq = xycsc->ciorq; 1199 struct xy_iopb *iopb = xycsc->ciopb; 1200 1201 /* 1202 * is someone else using the control iopq wait for it if we can 1203 */ 1204 start: 1205 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1206 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1207 return(XY_ERR_FAIL); 1208 goto start; 1209 } 1210 1211 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1212 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1213 iorq->mode = XY_SUB_FREE; 1214 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1215 } 1216 1217 /* init iorq/iopb */ 1218 1219 xyc_rqinit(iorq, xycsc, 1220 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1221 fullmode, block, scnt, dptr, NULL); 1222 1223 /* load IOPB from iorq */ 1224 1225 xyc_rqtopb(iorq, iopb, cmd, subfn); 1226 1227 /* submit it for processing */ 1228 1229 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1230 1231 return(XY_ERR_AOK); 1232 } 1233 1234 /* 1235 * xyc_startbuf 1236 * start a buffer for running 1237 */ 1238 1239 int 1240 xyc_startbuf(xycsc, xysc, bp) 1241 struct xyc_softc *xycsc; 1242 struct xy_softc *xysc; 1243 struct buf *bp; 1244 1245 { 1246 int partno; 1247 struct xy_iorq *iorq; 1248 struct xy_iopb *iopb; 1249 u_long block, dp; 1250 caddr_t dbuf; 1251 1252 iorq = xysc->xyrq; 1253 iopb = iorq->iopb; 1254 1255 /* get buf */ 1256 1257 if (bp == NULL) 1258 panic("xyc_startbuf null buf"); 1259 1260 partno = DISKPART(bp->b_dev); 1261 #ifdef XYC_DEBUG 1262 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1263 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1264 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1265 bp->b_bcount, bp->b_data); 1266 #endif 1267 1268 /* 1269 * load request. we have to calculate the correct block number based 1270 * on partition info. 1271 * 1272 * also, note that there are two kinds of buf structures, those with 1273 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1274 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1275 * buffer which has already been mapped into DVMA space. (Not on sun3) 1276 * However, if B_PHYS is not set, then the buffer is a normal system 1277 * buffer which does *not* live in DVMA space. In that case we call 1278 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1279 * 1280 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1281 * as mapped into DVMA space, where as the bp->b_data points to its 1282 * non-DVMA mapping. 1283 * 1284 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1285 * into dvma space, only that it was remapped into the kernel. 1286 * We ALWAYS have to remap the kernel buf into DVMA space. 1287 * (It is done inexpensively, using whole segments!) 1288 */ 1289 1290 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1291 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1292 1293 dbuf = dvma_mapin(bp->b_data, bp->b_bcount); 1294 if (dbuf == NULL) { /* out of DVMA space */ 1295 printf("%s: warning: out of DVMA space\n", 1296 xycsc->sc_dev.dv_xname); 1297 return (XY_ERR_FAIL); /* XXX: need some sort of 1298 * call-back scheme here? */ 1299 } 1300 1301 /* init iorq and load iopb from it */ 1302 1303 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1304 bp->b_bcount / XYFM_BPS, dbuf, bp); 1305 1306 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1307 1308 /* Instrumentation. */ 1309 disk_busy(&xysc->sc_dk); 1310 1311 return (XY_ERR_AOK); 1312 } 1313 1314 1315 /* 1316 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1317 * if ok. if it fail returns an error code. type is XY_SUB_*. 1318 * 1319 * note: caller frees iorq in all cases except NORM 1320 * 1321 * return value: 1322 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1323 * WAIT: XY_AOK (success), <error-code> (failed) 1324 * POLL: <same as WAIT> 1325 * NOQ : <same as NORM> 1326 * 1327 * there are three sources for i/o requests: 1328 * [1] xystrategy: normal block I/O, using "struct buf" system. 1329 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1330 * [3] open/ioctl: these are I/O requests done in the context of a process, 1331 * and the process should block until they are done. 1332 * 1333 * software state is stored in the iorq structure. each iorq has an 1334 * iopb structure. the hardware understands the iopb structure. 1335 * every command must go through an iopb. a 450 handles one iopb at a 1336 * time, where as a 451 can take them in chains. [the 450 claims it 1337 * can handle chains, but is appears to be buggy...] iopb are allocated 1338 * in DVMA space at boot up time. each disk gets one iopb, and the 1339 * controller gets one (for POLL and WAIT commands). what happens if 1340 * the iopb is busy? for i/o type [1], the buffers are queued at the 1341 * "buff" layer and * picked up later by the interrupt routine. for case 1342 * [2] we can only be blocked if there is a WAIT type I/O request being 1343 * run. since this can only happen when we are crashing, we wait a sec 1344 * and then steal the IOPB. for case [3] the process can sleep 1345 * on the iorq free list until some iopbs are avaliable. 1346 */ 1347 1348 1349 int 1350 xyc_submit_iorq(xycsc, iorq, type) 1351 struct xyc_softc *xycsc; 1352 struct xy_iorq *iorq; 1353 int type; 1354 1355 { 1356 struct xy_iopb *iopb; 1357 u_long iopbaddr; 1358 1359 #ifdef XYC_DEBUG 1360 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1361 xycsc->sc_dev.dv_xname, iorq, type); 1362 #endif 1363 1364 /* first check and see if controller is busy */ 1365 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1366 #ifdef XYC_DEBUG 1367 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1368 #endif 1369 if (type == XY_SUB_NOQ) 1370 return (XY_ERR_FAIL); /* failed */ 1371 switch (type) { 1372 case XY_SUB_NORM: 1373 return XY_ERR_AOK; /* success */ 1374 case XY_SUB_WAIT: 1375 while (iorq->iopb->done == 0) { 1376 sleep(iorq, PRIBIO); 1377 } 1378 return (iorq->errno); 1379 case XY_SUB_POLL: /* steal controller */ 1380 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1381 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1382 panic("xyc_submit_iorq: stuck xyc"); 1383 printf("%s: stole controller\n", 1384 xycsc->sc_dev.dv_xname); 1385 break; 1386 default: 1387 panic("xyc_submit_iorq adding"); 1388 } 1389 } 1390 1391 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1392 if (iopb == NULL) { /* nothing doing? */ 1393 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1394 return(XY_ERR_AOK); 1395 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1396 } 1397 iopbaddr = dvma_kvtopa((long) iopb, BUS_VME16); 1398 1399 XYC_GO(xycsc->xyc, iopbaddr); 1400 1401 /* command now running, wrap it up */ 1402 switch (type) { 1403 case XY_SUB_NORM: 1404 case XY_SUB_NOQ: 1405 return (XY_ERR_AOK); /* success */ 1406 case XY_SUB_WAIT: 1407 while (iorq->iopb->done == 0) { 1408 sleep(iorq, PRIBIO); 1409 } 1410 return (iorq->errno); 1411 case XY_SUB_POLL: 1412 return (xyc_piodriver(xycsc, iorq)); 1413 default: 1414 panic("xyc_submit_iorq wrap up"); 1415 } 1416 panic("xyc_submit_iorq"); 1417 return 0; /* not reached */ 1418 } 1419 1420 1421 /* 1422 * xyc_chain: build a chain. return dvma address of first element in 1423 * the chain. iorq != NULL: means we only want that item on the chain. 1424 */ 1425 1426 struct xy_iopb * 1427 xyc_chain(xycsc, iorq) 1428 1429 struct xyc_softc *xycsc; 1430 struct xy_iorq *iorq; 1431 1432 { 1433 int togo, chain, hand; 1434 struct xy_iopb *iopb, *prev_iopb; 1435 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1436 1437 /* 1438 * promote control IOPB to the top 1439 */ 1440 if (iorq == NULL) { 1441 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1442 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1443 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1444 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1445 } 1446 /* 1447 * special case: if iorq != NULL then we have a POLL or WAIT request. 1448 * we let these take priority and do them first. 1449 */ 1450 if (iorq) { 1451 xycsc->xy_chain[0] = iorq; 1452 iorq->iopb->chen = 0; 1453 return(iorq->iopb); 1454 } 1455 1456 /* 1457 * NORM case: do round robin and maybe chain (if allowed and possible) 1458 */ 1459 1460 chain = 0; 1461 hand = xycsc->xy_hand; 1462 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1463 1464 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1465 1466 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1467 xycsc->iopbase[hand].done) 1468 continue; /* not ready-for-i/o */ 1469 1470 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1471 iopb = xycsc->xy_chain[chain]->iopb; 1472 iopb->chen = 0; 1473 if (chain != 0) { /* adding a link to a chain? */ 1474 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1475 prev_iopb->chen = 1; 1476 prev_iopb->nxtiopb = 0xffff & 1477 dvma_kvtopa((long) iopb, BUS_VME16); 1478 } else { /* head of chain */ 1479 iorq = xycsc->xy_chain[chain]; 1480 } 1481 chain++; 1482 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1483 } 1484 return(iorq ? iorq->iopb : NULL); 1485 } 1486 1487 /* 1488 * xyc_piodriver 1489 * 1490 * programmed i/o driver. this function takes over the computer 1491 * and drains off the polled i/o request. it returns the status of the iorq 1492 * the caller is interesting in. 1493 */ 1494 int 1495 xyc_piodriver(xycsc, iorq) 1496 struct xyc_softc *xycsc; 1497 struct xy_iorq *iorq; 1498 1499 { 1500 int nreset = 0; 1501 int retval = 0; 1502 u_long res; 1503 struct xyc *xyc = xycsc->xyc; 1504 #ifdef XYC_DEBUG 1505 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1506 #endif 1507 1508 while (iorq->iopb->done == 0) { 1509 1510 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1511 1512 /* we expect some progress soon */ 1513 if (res == XY_ERR_FAIL && nreset >= 2) { 1514 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1515 #ifdef XYC_DEBUG 1516 printf("xyc_piodriver: timeout\n"); 1517 #endif 1518 return (XY_ERR_FAIL); 1519 } 1520 if (res == XY_ERR_FAIL) { 1521 if (xyc_reset(xycsc, 0, 1522 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1523 XY_ERR_FAIL, 1524 0) == XY_ERR_FAIL) 1525 return (XY_ERR_FAIL); /* flushes all but POLL 1526 * requests, resets */ 1527 continue; 1528 } 1529 1530 xyc_remove_iorq(xycsc); /* may resubmit request */ 1531 1532 if (iorq->iopb->done == 0) 1533 xyc_start(xycsc, iorq); 1534 } 1535 1536 /* get return value */ 1537 1538 retval = iorq->errno; 1539 1540 #ifdef XYC_DEBUG 1541 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1542 iorq->errno, xyc_e2str(iorq->errno)); 1543 #endif 1544 1545 /* start up any bufs that have queued */ 1546 1547 xyc_start(xycsc, NULL); 1548 1549 return (retval); 1550 } 1551 1552 /* 1553 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1554 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1555 */ 1556 int 1557 xyc_xyreset(xycsc, xysc) 1558 struct xyc_softc *xycsc; 1559 struct xy_softc *xysc; 1560 1561 { 1562 struct xy_iopb tmpiopb; 1563 u_long addr; 1564 int del; 1565 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1566 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1567 xycsc->ciopb->ien = 0; 1568 xycsc->ciopb->com = XYCMD_RST; 1569 xycsc->ciopb->unit = xysc->xy_drive; 1570 addr = dvma_kvtopa((long) xycsc->ciopb, BUS_VME16); 1571 1572 XYC_GO(xycsc->xyc, addr); 1573 1574 del = XYC_RESETUSEC; 1575 while (del > 0) { 1576 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1577 DELAY(1); 1578 del--; 1579 } 1580 1581 if (del <= 0 || xycsc->ciopb->errs) { 1582 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1583 xyc_e2str(xycsc->ciopb->errno)); 1584 del = xycsc->xyc->xyc_rsetup; 1585 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1586 panic("xyc_reset"); 1587 } else { 1588 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1589 } 1590 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1591 } 1592 1593 1594 /* 1595 * xyc_reset: reset everything: requests are marked as errors except 1596 * a polled request (which is resubmitted) 1597 */ 1598 int 1599 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1600 struct xyc_softc *xycsc; 1601 int quiet, error; 1602 struct xy_iorq *blastmode; 1603 struct xy_softc *xysc; 1604 1605 { 1606 int del = 0, lcv, poll = -1, retval = XY_ERR_AOK; 1607 struct xy_iorq *iorq; 1608 1609 /* soft reset hardware */ 1610 1611 if (!quiet) 1612 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1613 del = xycsc->xyc->xyc_rsetup; 1614 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1615 if (del == XY_ERR_FAIL) { 1616 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1617 retval = XY_ERR_FAIL; 1618 } 1619 if (xysc) 1620 xyc_xyreset(xycsc, xysc); 1621 1622 /* fix queues based on "blast-mode" */ 1623 1624 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1625 iorq = &xycsc->reqs[lcv]; 1626 1627 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1628 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1629 XY_STATE(iorq->mode) != XY_SUB_NORM) 1630 /* is it active? */ 1631 continue; 1632 1633 if (blastmode == XY_RSET_ALL || 1634 blastmode != iorq) { 1635 /* failed */ 1636 iorq->errno = error; 1637 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1638 switch (XY_STATE(iorq->mode)) { 1639 case XY_SUB_NORM: 1640 iorq->buf->b_error = EIO; 1641 iorq->buf->b_flags |= B_ERROR; 1642 iorq->buf->b_resid = 1643 iorq->sectcnt * XYFM_BPS; 1644 /* Sun3: map/unmap regardless of B_PHYS */ 1645 dvma_mapout(iorq->dbufbase, 1646 iorq->buf->b_bcount); 1647 iorq->xy->xyq.b_actf = 1648 iorq->buf->b_actf; 1649 disk_unbusy(&iorq->xy->sc_dk, 1650 (iorq->buf->b_bcount - 1651 iorq->buf->b_resid)); 1652 biodone(iorq->buf); 1653 iorq->mode = XY_SUB_FREE; 1654 break; 1655 case XY_SUB_WAIT: 1656 wakeup(iorq); 1657 case XY_SUB_POLL: 1658 iorq->mode = 1659 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1660 break; 1661 } 1662 1663 } else { 1664 1665 /* resubmit, no need to do anything here */ 1666 } 1667 } 1668 1669 /* 1670 * now, if stuff is waiting, start it. 1671 * since we just reset it should go 1672 */ 1673 xyc_start(xycsc, NULL); 1674 1675 return (retval); 1676 } 1677 1678 /* 1679 * xyc_start: start waiting buffers 1680 */ 1681 1682 int 1683 xyc_start(xycsc, iorq) 1684 struct xyc_softc *xycsc; 1685 struct xy_iorq *iorq; 1686 1687 { 1688 int lcv; 1689 struct xy_softc *xy; 1690 1691 if (iorq == NULL) { 1692 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1693 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1694 if (xy->xyq.b_actf == NULL) continue; 1695 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1696 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1697 } 1698 } 1699 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1700 } 1701 1702 /* 1703 * xyc_remove_iorq: remove "done" IOPB's. 1704 */ 1705 1706 int 1707 xyc_remove_iorq(xycsc) 1708 struct xyc_softc *xycsc; 1709 1710 { 1711 int errno, rq, comm, errs; 1712 struct xyc *xyc = xycsc->xyc; 1713 u_long addr; 1714 struct xy_iopb *iopb; 1715 struct xy_iorq *iorq; 1716 struct buf *bp; 1717 1718 if (xyc->xyc_csr & XYC_DERR) { 1719 /* 1720 * DOUBLE ERROR: should never happen under normal use. This 1721 * error is so bad, you can't even tell which IOPB is bad, so 1722 * we dump them all. 1723 */ 1724 errno = XY_ERR_DERR; 1725 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1726 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1727 printf("%s: soft reset failed!\n", 1728 xycsc->sc_dev.dv_xname); 1729 panic("xyc_remove_iorq: controller DEAD"); 1730 } 1731 return (XY_ERR_AOK); 1732 } 1733 1734 /* 1735 * get iopb that is done, loop down the chain 1736 */ 1737 1738 if (xyc->xyc_csr & XYC_ERR) { 1739 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1740 } 1741 if (xyc->xyc_csr & XYC_IPND) { 1742 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1743 } 1744 1745 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1746 iorq = xycsc->xy_chain[rq]; 1747 if (iorq == NULL) break; /* done ! */ 1748 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1749 continue; /* free, or done */ 1750 iopb = iorq->iopb; 1751 if (iopb->done == 0) 1752 continue; /* not done yet */ 1753 1754 comm = iopb->com; 1755 errs = iopb->errs; 1756 1757 if (errs) 1758 iorq->errno = iopb->errno; 1759 else 1760 iorq->errno = 0; 1761 1762 /* handle non-fatal errors */ 1763 1764 if (errs && 1765 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1766 continue; /* AOK: we resubmitted it */ 1767 1768 1769 /* this iorq is now done (hasn't been restarted or anything) */ 1770 1771 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1772 xyc_perror(iorq, iopb, 0); 1773 1774 /* now, if read/write check to make sure we got all the data 1775 * we needed. (this may not be the case if we got an error in 1776 * the middle of a multisector request). */ 1777 1778 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1779 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1780 /* we just successfully processed a bad144 sector 1781 * note: if we are in bad 144 mode, the pointers have 1782 * been advanced already (see above) and are pointing 1783 * at the bad144 sector. to exit bad144 mode, we 1784 * must advance the pointers 1 sector and issue a new 1785 * request if there are still sectors left to process 1786 * 1787 */ 1788 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1789 1790 /* exit b144 mode */ 1791 iorq->mode = iorq->mode & (~XY_MODE_B144); 1792 1793 if (iorq->sectcnt) { /* more to go! */ 1794 iorq->lasterror = iorq->errno = iopb->errno = 0; 1795 iopb->errs = iopb->done = 0; 1796 iorq->tries = 0; 1797 iopb->scnt = iorq->sectcnt; 1798 iopb->cyl = iorq->blockno / 1799 iorq->xy->sectpercyl; 1800 iopb->head = 1801 (iorq->blockno / iorq->xy->nhead) % 1802 iorq->xy->nhead; 1803 iopb->sect = iorq->blockno % XYFM_BPS; 1804 addr = dvma_kvtopa((long) iorq->dbuf, BUS_VME16); 1805 iopb->dataa = (addr & 0xffff); 1806 iopb->datar = ((addr & 0xff0000) >> 16); 1807 /* will resubit at end */ 1808 continue; 1809 } 1810 } 1811 /* final cleanup, totally done with this request */ 1812 1813 switch (XY_STATE(iorq->mode)) { 1814 case XY_SUB_NORM: 1815 bp = iorq->buf; 1816 if (errs) { 1817 bp->b_error = EIO; 1818 bp->b_flags |= B_ERROR; 1819 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1820 } else { 1821 bp->b_resid = 0; /* done */ 1822 } 1823 /* Sun3: map/unmap regardless of B_PHYS */ 1824 dvma_mapout(iorq->dbufbase, 1825 iorq->buf->b_bcount); 1826 iorq->xy->xyq.b_actf = bp->b_actf; 1827 disk_unbusy(&iorq->xy->sc_dk, 1828 (bp->b_bcount - bp->b_resid)); 1829 biodone(bp); 1830 iorq->mode = XY_SUB_FREE; 1831 break; 1832 case XY_SUB_WAIT: 1833 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1834 wakeup(iorq); 1835 break; 1836 case XY_SUB_POLL: 1837 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1838 break; 1839 } 1840 } 1841 1842 return (XY_ERR_AOK); 1843 } 1844 1845 /* 1846 * xyc_perror: print error. 1847 * - if still_trying is true: we got an error, retried and got a 1848 * different error. in that case lasterror is the old error, 1849 * and errno is the new one. 1850 * - if still_trying is not true, then if we ever had an error it 1851 * is in lasterror. also, if iorq->errno == 0, then we recovered 1852 * from that error (otherwise iorq->errno == iorq->lasterror). 1853 */ 1854 void 1855 xyc_perror(iorq, iopb, still_trying) 1856 struct xy_iorq *iorq; 1857 struct xy_iopb *iopb; 1858 int still_trying; 1859 1860 { 1861 1862 int error = iorq->lasterror; 1863 1864 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1865 : iorq->xyc->sc_dev.dv_xname); 1866 if (iorq->buf) 1867 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1868 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1869 printf("%s %d/%d/%d: ", 1870 (iopb->com == XYCMD_RD) ? "read" : "write", 1871 iopb->cyl, iopb->head, iopb->sect); 1872 printf("%s", xyc_e2str(error)); 1873 1874 if (still_trying) 1875 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1876 else 1877 if (iorq->errno == 0) 1878 printf(" [recovered in %d tries]", iorq->tries); 1879 1880 printf("\n"); 1881 } 1882 1883 /* 1884 * xyc_error: non-fatal error encountered... recover. 1885 * return AOK if resubmitted, return FAIL if this iopb is done 1886 */ 1887 int 1888 xyc_error(xycsc, iorq, iopb, comm) 1889 struct xyc_softc *xycsc; 1890 struct xy_iorq *iorq; 1891 struct xy_iopb *iopb; 1892 int comm; 1893 1894 { 1895 int errno = iorq->errno; 1896 int erract = xyc_entoact(errno); 1897 int oldmode, advance, i; 1898 1899 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1900 oldmode = iorq->mode; 1901 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1902 /* make xyc_start ignore us */ 1903 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1904 iorq->mode = oldmode; 1905 } 1906 /* check for read/write to a sector in bad144 table if bad: redirect 1907 * request to bad144 area */ 1908 1909 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1910 (iorq->mode & XY_MODE_B144) == 0) { 1911 advance = iorq->sectcnt - iopb->scnt; 1912 XYC_ADVANCE(iorq, advance); 1913 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1914 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1915 iorq->blockno % iorq->xy->nsect)) != -1) { 1916 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1917 * redirect */ 1918 iopb->errno = iopb->done = iopb->errs = 0; 1919 iopb->scnt = 1; 1920 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1921 /* second to last acyl */ 1922 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1923 * standard */ 1924 iopb->head = i / iorq->xy->nhead; 1925 iopb->sect = i % iorq->xy->nhead; 1926 /* will resubmit when we come out of remove_iorq */ 1927 return (XY_ERR_AOK); /* recovered! */ 1928 } 1929 } 1930 1931 /* 1932 * it isn't a bad144 sector, must be real error! see if we can retry 1933 * it? 1934 */ 1935 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1936 xyc_perror(iorq, iopb, 1); /* inform of error state 1937 * change */ 1938 iorq->lasterror = errno; 1939 1940 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1941 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1942 iorq->tries++; 1943 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1944 /* will resubmit at end of remove_iorq */ 1945 return (XY_ERR_AOK); /* recovered! */ 1946 } 1947 1948 /* failed to recover from this error */ 1949 return (XY_ERR_FAIL); 1950 } 1951 1952 /* 1953 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1954 */ 1955 void 1956 xyc_tick(arg) 1957 void *arg; 1958 1959 { 1960 struct xyc_softc *xycsc = arg; 1961 int lcv, s, reset = 0; 1962 1963 /* reduce ttl for each request if one goes to zero, reset xyc */ 1964 s = splbio(); 1965 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1966 if (xycsc->reqs[lcv].mode == 0 || 1967 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1968 continue; 1969 xycsc->reqs[lcv].ttl--; 1970 if (xycsc->reqs[lcv].ttl == 0) 1971 reset = 1; 1972 } 1973 if (reset) { 1974 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1975 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1976 } 1977 splx(s); 1978 1979 /* until next time */ 1980 1981 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1982 } 1983 1984 /* 1985 * xyc_ioctlcmd: this function provides a user level interface to the 1986 * controller via ioctl. this allows "format" programs to be written 1987 * in user code, and is also useful for some debugging. we return 1988 * an error code. called at user priority. 1989 * 1990 * XXX missing a few commands (see the 7053 driver for ideas) 1991 */ 1992 int 1993 xyc_ioctlcmd(xy, dev, xio) 1994 struct xy_softc *xy; 1995 dev_t dev; 1996 struct xd_iocmd *xio; 1997 1998 { 1999 int s, err, rqno, dummy; 2000 caddr_t dvmabuf = NULL; 2001 struct xyc_softc *xycsc; 2002 2003 /* check sanity of requested command */ 2004 2005 switch (xio->cmd) { 2006 2007 case XYCMD_NOP: /* no op: everything should be zero */ 2008 if (xio->subfn || xio->dptr || xio->dlen || 2009 xio->block || xio->sectcnt) 2010 return (EINVAL); 2011 break; 2012 2013 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2014 case XYCMD_WR: 2015 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2016 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2017 return (EINVAL); 2018 break; 2019 2020 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2021 return (EINVAL); 2022 2023 break; 2024 2025 default: 2026 return (EINVAL);/* ??? */ 2027 } 2028 2029 /* create DVMA buffer for request if needed */ 2030 2031 if (xio->dlen) { 2032 dvmabuf = dvma_malloc(xio->dlen); 2033 if (xio->cmd == XYCMD_WR) { 2034 if (err = copyin(xio->dptr, dvmabuf, xio->dlen)) { 2035 dvma_free(dvmabuf, xio->dlen); 2036 return (err); 2037 } 2038 } 2039 } 2040 /* do it! */ 2041 2042 err = 0; 2043 xycsc = xy->parent; 2044 s = splbio(); 2045 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2046 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2047 if (rqno == XY_ERR_FAIL) { 2048 err = EIO; 2049 goto done; 2050 } 2051 xio->errno = xycsc->ciorq->errno; 2052 xio->tries = xycsc->ciorq->tries; 2053 XYC_DONE(xycsc, dummy); 2054 2055 if (xio->cmd == XYCMD_RD) 2056 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2057 2058 done: 2059 splx(s); 2060 if (dvmabuf) 2061 dvma_free(dvmabuf, xio->dlen); 2062 return (err); 2063 } 2064 2065 /* 2066 * xyc_e2str: convert error code number into an error string 2067 */ 2068 char * 2069 xyc_e2str(no) 2070 int no; 2071 { 2072 switch (no) { 2073 case XY_ERR_FAIL: 2074 return ("Software fatal error"); 2075 case XY_ERR_DERR: 2076 return ("DOUBLE ERROR"); 2077 case XY_ERR_AOK: 2078 return ("Successful completion"); 2079 case XY_ERR_IPEN: 2080 return("Interrupt pending"); 2081 case XY_ERR_BCFL: 2082 return("Busy conflict"); 2083 case XY_ERR_TIMO: 2084 return("Operation timeout"); 2085 case XY_ERR_NHDR: 2086 return("Header not found"); 2087 case XY_ERR_HARD: 2088 return("Hard ECC error"); 2089 case XY_ERR_ICYL: 2090 return("Illegal cylinder address"); 2091 case XY_ERR_ISEC: 2092 return("Illegal sector address"); 2093 case XY_ERR_SMAL: 2094 return("Last sector too small"); 2095 case XY_ERR_SACK: 2096 return("Slave ACK error (non-existent memory)"); 2097 case XY_ERR_CHER: 2098 return("Cylinder and head/header error"); 2099 case XY_ERR_SRTR: 2100 return("Auto-seek retry successful"); 2101 case XY_ERR_WPRO: 2102 return("Write-protect error"); 2103 case XY_ERR_UIMP: 2104 return("Unimplemented command"); 2105 case XY_ERR_DNRY: 2106 return("Drive not ready"); 2107 case XY_ERR_SZER: 2108 return("Sector count zero"); 2109 case XY_ERR_DFLT: 2110 return("Drive faulted"); 2111 case XY_ERR_ISSZ: 2112 return("Illegal sector size"); 2113 case XY_ERR_SLTA: 2114 return("Self test A"); 2115 case XY_ERR_SLTB: 2116 return("Self test B"); 2117 case XY_ERR_SLTC: 2118 return("Self test C"); 2119 case XY_ERR_SOFT: 2120 return("Soft ECC error"); 2121 case XY_ERR_SFOK: 2122 return("Soft ECC error recovered"); 2123 case XY_ERR_IHED: 2124 return("Illegal head"); 2125 case XY_ERR_DSEQ: 2126 return("Disk sequencer error"); 2127 case XY_ERR_SEEK: 2128 return("Seek error"); 2129 default: 2130 return ("Unknown error"); 2131 } 2132 } 2133 2134 int 2135 xyc_entoact(errno) 2136 2137 int errno; 2138 2139 { 2140 switch (errno) { 2141 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2142 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2143 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2144 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2145 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2146 2147 return(XY_ERA_PROG); /* program error ! */ 2148 2149 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2150 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2151 case XY_ERR_SOFT: 2152 2153 return(XY_ERA_HARD); /* hard error, retry */ 2154 2155 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2156 2157 return(XY_ERA_RSET); /* hard error reset */ 2158 2159 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2160 2161 return(XY_ERA_SOFT); /* an FYI error */ 2162 2163 case XY_ERR_WPRO: 2164 2165 return(XY_ERA_WPRO); /* write protect */ 2166 } 2167 2168 return(XY_ERA_PROG); /* ??? */ 2169 } 2170
Indexes created Mon Sep 29 21:09:56 GMT 2025