xy.c revision 1.1
1 /* $NetBSD: xy.c,v 1.1 1997/11/02 23:09:25 pk 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 1.1 1997/11/02 23:09:25 pk 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/bus.h> 81 #include <machine/autoconf.h> 82 #include <machine/sun_disklabel.h> 83 #include <machine/conf.h> 84 85 #include <dev/vme/vmevar.h> 86 #include <dev/vme/xyreg.h> 87 #include <dev/vme/xyvar.h> 88 #include <dev/vme/xio.h> 89 90 #include "locators.h" 91 92 /* 93 * macros 94 */ 95 96 /* 97 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 98 */ 99 #define XYC_GO(XYC, ADDR) { \ 100 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 101 (ADDR) = ((ADDR) >> 8); \ 102 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_reloc_hi = (ADDR); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errno; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 150 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 151 char *xyc_e2str __P((int)); 152 int xyc_entoact __P((int)); 153 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int)); 155 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 156 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 157 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 158 int xyc_remove_iorq __P((struct xyc_softc *)); 159 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *)); 161 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 caddr_t, struct buf *)); 164 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 165 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 166 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 167 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 168 void xyc_tick __P((void *)); 169 int xyc_unbusy __P((struct xyc *, int)); 170 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 171 172 /* machine interrupt hook */ 173 int xycintr __P((void *)); 174 175 /* autoconf */ 176 int xycmatch __P((struct device *, struct cfdata *, void *)); 177 void xycattach __P((struct device *, struct device *, void *)); 178 int xymatch __P((struct device *, struct cfdata *, void *)); 179 void xyattach __P((struct device *, struct device *, void *)); 180 181 static void xydummystrat __P((struct buf *)); 182 int xygetdisklabel __P((struct xy_softc *, void *)); 183 184 /* 185 * cfdrivers: device driver interface to autoconfig 186 */ 187 188 struct cfattach xyc_ca = { 189 sizeof(struct xyc_softc), xycmatch, xycattach 190 }; 191 192 struct cfdriver xyc_cd = { 193 NULL, "xyc", DV_DULL 194 }; 195 196 struct cfattach xy_ca = { 197 sizeof(struct xy_softc), xymatch, xyattach 198 }; 199 200 struct cfdriver xy_cd = { 201 NULL, "xy", DV_DISK 202 }; 203 204 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 205 int driveno; /* unit number */ 206 char *buf; /* scratch buffer for reading disk label */ 207 char *dvmabuf; /* DVMA address of above */ 208 int fullmode; /* submit mode */ 209 int booting; /* are we booting or not? */ 210 }; 211 212 /* 213 * dkdriver 214 */ 215 216 struct dkdriver xydkdriver = { xystrategy }; 217 218 /* 219 * start: disk label fix code (XXX) 220 */ 221 222 static void *xy_labeldata; 223 224 static void 225 xydummystrat(bp) 226 struct buf *bp; 227 { 228 if (bp->b_bcount != XYFM_BPS) 229 panic("xydummystrat"); 230 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 231 bp->b_flags |= B_DONE; 232 bp->b_flags &= ~B_BUSY; 233 } 234 235 int 236 xygetdisklabel(xy, b) 237 struct xy_softc *xy; 238 void *b; 239 { 240 char *err; 241 struct sun_disklabel *sdl; 242 243 /* We already have the label data in `b'; setup for dummy strategy */ 244 xy_labeldata = b; 245 246 /* Required parameter for readdisklabel() */ 247 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 248 249 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 250 xydummystrat, 251 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 252 if (err) { 253 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 254 return(XY_ERR_FAIL); 255 } 256 257 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 258 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 259 if (sdl->sl_magic == SUN_DKMAGIC) 260 xy->pcyl = sdl->sl_pcylinders; 261 else { 262 printf("%s: WARNING: no `pcyl' in disk label.\n", 263 xy->sc_dev.dv_xname); 264 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 265 xy->sc_dk.dk_label->d_acylinders; 266 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 267 xy->sc_dev.dv_xname, xy->pcyl); 268 } 269 270 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 271 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 272 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 273 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 274 xy->sectpercyl = xy->nhead * xy->nsect; 275 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 276 * sun->bsd */ 277 return(XY_ERR_AOK); 278 } 279 280 /* 281 * end: disk label fix code (XXX) 282 */ 283 284 /* 285 * a u t o c o n f i g f u n c t i o n s 286 */ 287 288 /* 289 * xycmatch: determine if xyc is present or not. we do a 290 * soft reset to detect the xyc. 291 */ 292 293 int xycmatch(parent, cf, aux) 294 struct device *parent; 295 struct cfdata *cf; 296 void *aux; 297 { 298 struct vme_attach_args *va = aux; 299 vme_chipset_tag_t ct = va->vma_chipset_tag; 300 bus_space_tag_t bt = va->vma_bustag; 301 struct xyc *xyc; 302 vme_mod_t mod; 303 304 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 305 306 xyc = (struct xyc *) va->vma_reg[0]; 307 if (vme_bus_probe(ct, bt, (vme_addr_t)&xyc->xyc_rsetup, 1, mod)) { 308 if (xyc_unbusy(xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 309 return(0); 310 return (1); 311 } 312 return (0); 313 } 314 315 /* 316 * xycattach: attach controller 317 */ 318 void 319 xycattach(parent, self, aux) 320 struct device *parent, *self; 321 void *aux; 322 323 { 324 struct vme_attach_args *va = aux; 325 vme_chipset_tag_t ct = va->vma_chipset_tag; 326 bus_space_tag_t bt = va->vma_bustag; 327 bus_space_handle_t bh; 328 vme_intr_handle_t ih; 329 vme_mod_t mod; 330 struct xyc_softc *xyc = (void *) self; 331 struct xyc_attach_args xa; 332 int lcv, err, res, pbsz; 333 void *tmp, *tmp2; 334 void *dtmp, *dtmp2; 335 u_long ultmp; 336 337 /* get addressing and intr level stuff from autoconfig and load it 338 * into our xyc_softc. */ 339 340 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 341 342 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 343 mod, bt, &bh) != 0) 344 panic("xyc: vme_map"); 345 346 xyc->xyc = (struct xyc *) bh; 347 xyc->ipl = va->vma_pri; 348 xyc->vector = va->vma_vec; 349 printf(" pri %d", va->vma_pri); 350 xyc->no_ols = 0; /* XXX should be from config */ 351 352 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 353 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 354 355 /* 356 * allocate and zero buffers 357 * check boundaries of the KVA's ... all IOPBs must reside in 358 * the same 64K region. 359 */ 360 361 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 362 dtmp = dtmp2 = (struct xy_iopb *)dvma_malloc(pbsz, &tmp, M_NOWAIT); 363 tmp2 = tmp; 364 ultmp = (u_long) dtmp; 365 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 366 dtmp = (struct xy_iopb *) 367 dvma_malloc(pbsz, &tmp, M_NOWAIT); /* retry! */ 368 dvma_free(dtmp2, pbsz, &tmp2); 369 ultmp = (u_long) dtmp; 370 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 371 printf("%s: can't alloc IOPB mem in 64K\n", 372 xyc->sc_dev.dv_xname); 373 return; 374 } 375 } 376 bzero(tmp, pbsz); 377 xyc->iopbase = tmp; 378 xyc->iopbase = dtmp; /* XXX TMP HACK */ 379 xyc->dvmaiopb = (struct xy_iopb *) ((u_long)dtmp - DVMA_BASE); 380 xyc->reqs = (struct xy_iorq *) 381 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 382 if (xyc->reqs == NULL) 383 panic("xyc malloc"); 384 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 385 386 /* 387 * init iorq to iopb pointers, and non-zero fields in the 388 * iopb which never change. 389 */ 390 391 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 392 xyc->xy_chain[lcv] = NULL; 393 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 394 xyc->iopbase[lcv].asr = 1; /* always the same */ 395 xyc->iopbase[lcv].eef = 1; /* always the same */ 396 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 397 xyc->iopbase[lcv].aud = 1; /* always the same */ 398 xyc->iopbase[lcv].relo = 1; /* always the same */ 399 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 400 } 401 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 402 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 403 xyc->xy_hand = 0; 404 405 /* read controller parameters and insure we have a 450/451 */ 406 407 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 408 res = xyc->ciopb->ctyp; 409 XYC_DONE(xyc, err); 410 if (res != XYCT_450) { 411 if (err) 412 printf(": %s: ", xyc_e2str(err)); 413 printf(": doesn't identify as a 450/451\n"); 414 return; 415 } 416 printf(": Xylogics 450/451"); 417 if (xyc->no_ols) 418 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 419 printf("\n"); 420 if (err) { 421 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 422 xyc_e2str(err)); 423 return; 424 } 425 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 426 printf("%s: 24 bit addressing turned off\n", 427 xyc->sc_dev.dv_xname); 428 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 429 printf("to enable 24 bit mode and this driver\n"); 430 return; 431 } 432 433 /* link in interrupt with higher level software */ 434 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 435 vme_intr_establish(ct, ih, xycintr, xyc); 436 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 437 438 439 /* now we must look for disks using autoconfig */ 440 xa.dvmabuf = (char *)dvma_malloc(XYFM_BPS, &xa.buf, M_NOWAIT); 441 xa.fullmode = XY_SUB_POLL; 442 xa.booting = 1; 443 444 #if 0 /* XXX - deal with this disksubr */ 445 if (ca->ca_ra.ra_bp && ca->ca_ra.ra_bp->val[0] == -1 && 446 ca->ca_ra.ra_bp->val[1] == xyc->sc_dev.dv_unit) { 447 bootpath_store(1, ca->ca_ra.ra_bp + 1); /* advance bootpath */ 448 } 449 #endif 450 451 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 452 (void) config_found(self, (void *) &xa, NULL); 453 454 dvma_free(xa.dvmabuf, XYFM_BPS, &xa.buf); 455 #if 0 456 bootpath_store(1, NULL); 457 #endif 458 459 /* start the watchdog clock */ 460 timeout(xyc_tick, xyc, XYC_TICKCNT); 461 462 } 463 464 /* 465 * xymatch: probe for disk. 466 * 467 * note: we almost always say disk is present. this allows us to 468 * spin up and configure a disk after the system is booted (we can 469 * call xyattach!). 470 */ 471 int 472 xymatch(parent, cf, aux) 473 struct device *parent; 474 struct cfdata *cf; 475 void *aux; 476 { 477 struct xyc_attach_args *xa = aux; 478 479 /* looking for autoconf wildcard or exact match */ 480 481 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 482 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 483 return 0; 484 485 return 1; 486 487 } 488 489 /* 490 * xyattach: attach a disk. this can be called from autoconf and also 491 * from xyopen/xystrategy. 492 */ 493 void 494 xyattach(parent, self, aux) 495 struct device *parent, *self; 496 void *aux; 497 498 { 499 struct xy_softc *xy = (void *) self, *oxy; 500 struct xyc_softc *xyc = (void *) parent; 501 struct xyc_attach_args *xa = aux; 502 int err, spt, mb, blk, lcv, fmode, s = 0, newstate; 503 struct dkbad *dkb; 504 struct bootpath *bp; 505 506 /* 507 * Always re-initialize the disk structure. We want statistics 508 * to start with a clean slate. 509 */ 510 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 511 xy->sc_dk.dk_driver = &xydkdriver; 512 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 513 514 /* if booting, init the xy_softc */ 515 516 if (xa->booting) { 517 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 518 xy->flags = 0; 519 xy->parent = xyc; 520 521 /* init queue of waiting bufs */ 522 523 xy->xyq.b_active = 0; 524 xy->xyq.b_actf = 0; 525 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 526 527 xy->xyrq = &xyc->reqs[xa->driveno]; 528 529 } 530 xy->xy_drive = xa->driveno; 531 fmode = xa->fullmode; 532 xyc->sc_drives[xa->driveno] = xy; 533 534 /* if not booting, make sure we are the only process in the attach for 535 * this drive. if locked out, sleep on it. */ 536 537 if (!xa->booting) { 538 s = splbio(); 539 while (xy->state == XY_DRIVE_ATTACHING) { 540 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 541 splx(s); 542 return; 543 } 544 } 545 printf("%s at %s", 546 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 547 } 548 /* we now have control */ 549 550 xy->state = XY_DRIVE_ATTACHING; 551 newstate = XY_DRIVE_UNKNOWN; 552 553 /* first try and reset the drive */ 554 555 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 556 XYC_DONE(xyc, err); 557 if (err == XY_ERR_DNRY) { 558 printf(" drive %d: off-line\n", xa->driveno); 559 goto done; 560 } 561 if (err) { 562 printf(": ERROR 0x%02x (%s)\n", err, xyc_e2str(err)); 563 goto done; 564 } 565 printf(" drive %d: ready", xa->driveno); 566 567 /* 568 * now set drive parameters (to semi-bogus values) so we can read the 569 * disk label. 570 */ 571 xy->pcyl = xy->ncyl = 1; 572 xy->acyl = 0; 573 xy->nhead = 1; 574 xy->nsect = 1; 575 xy->sectpercyl = 1; 576 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 577 xy->dkb.bt_bad[lcv].bt_cyl = 578 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 579 580 /* read disk label */ 581 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 582 xy->drive_type++) { 583 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 584 xa->dvmabuf, fmode); 585 XYC_DONE(xyc, err); 586 if (err == XY_ERR_AOK) break; 587 } 588 589 if (err != XY_ERR_AOK) { 590 printf("\n%s: reading disk label failed: %s\n", 591 xy->sc_dev.dv_xname, xyc_e2str(err)); 592 goto done; 593 } 594 printf(" (drive type %d)\n", xy->drive_type); 595 596 newstate = XY_DRIVE_NOLABEL; 597 598 xy->hw_spt = spt = 0; /* XXX needed ? */ 599 /* Attach the disk: must be before getdisklabel to malloc label */ 600 disk_attach(&xy->sc_dk); 601 602 if (xygetdisklabel(xy, xa->buf) != XY_ERR_AOK) 603 goto done; 604 605 /* inform the user of what is up */ 606 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 607 xa->buf, xy->pcyl); 608 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 609 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 610 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 611 XYFM_BPS); 612 613 /* 614 * 450/451 stupidity: the drive type is encoded into the format 615 * of the disk. the drive type in the IOPB must match the drive 616 * type in the format, or you will not be able to do I/O to the 617 * disk (you get header not found errors). if you have two drives 618 * of different sizes that have the same drive type in their 619 * formatting then you are out of luck. 620 * 621 * this problem was corrected in the 753/7053. 622 */ 623 624 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 625 oxy = xyc->sc_drives[lcv]; 626 if (oxy == NULL || oxy == xy) continue; 627 if (oxy->drive_type != xy->drive_type) continue; 628 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 629 xy->nhead != oxy->nhead) { 630 printf("%s: %s and %s must be the same size!\n", 631 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 632 oxy->sc_dev.dv_xname); 633 panic("xy drive size mismatch"); 634 } 635 } 636 637 638 /* now set the real drive parameters! */ 639 640 blk = (xy->nsect - 1) + 641 ((xy->nhead - 1) * xy->nsect) + 642 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 643 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 644 XYC_DONE(xyc, err); 645 if (err) { 646 printf("%s: write drive size failed: %s\n", 647 xy->sc_dev.dv_xname, xyc_e2str(err)); 648 goto done; 649 } 650 newstate = XY_DRIVE_ONLINE; 651 652 /* 653 * read bad144 table. this table resides on the first sector of the 654 * last track of the disk (i.e. second cyl of "acyl" area). 655 */ 656 657 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 658 /* last cyl */ 659 (xy->nhead - 1) * xy->nsect; /* last head */ 660 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 661 xa->dvmabuf, fmode); 662 XYC_DONE(xyc, err); 663 if (err) { 664 printf("%s: reading bad144 failed: %s\n", 665 xy->sc_dev.dv_xname, xyc_e2str(err)); 666 goto done; 667 } 668 669 /* check dkbad for sanity */ 670 dkb = (struct dkbad *) xa->buf; 671 for (lcv = 0; lcv < 126; lcv++) { 672 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 673 dkb->bt_bad[lcv].bt_cyl == 0) && 674 dkb->bt_bad[lcv].bt_trksec == 0xffff) 675 continue; /* blank */ 676 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 677 break; 678 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 679 break; 680 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 681 break; 682 } 683 if (lcv != 126) { 684 printf("%s: warning: invalid bad144 sector!\n", 685 xy->sc_dev.dv_xname); 686 } else { 687 bcopy(xa->buf, &xy->dkb, XYFM_BPS); 688 } 689 690 if (xa->booting) { 691 /* restore bootpath! (do this via attach_args again?)*/ 692 bp = bootpath_store(0, NULL); 693 if (bp && strcmp("xy", bp->name) == 0 && 694 xy->xy_drive == bp->val[0]) 695 bp->dev = &xy->sc_dev; 696 } 697 698 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 699 700 done: 701 xy->state = newstate; 702 if (!xa->booting) { 703 wakeup(&xy->state); 704 splx(s); 705 } 706 } 707 708 /* 709 * end of autoconfig functions 710 */ 711 712 /* 713 * { b , c } d e v s w f u n c t i o n s 714 */ 715 716 /* 717 * xyclose: close device 718 */ 719 int 720 xyclose(dev, flag, fmt, p) 721 dev_t dev; 722 int flag, fmt; 723 struct proc *p; 724 725 { 726 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 727 int part = DISKPART(dev); 728 729 /* clear mask bits */ 730 731 switch (fmt) { 732 case S_IFCHR: 733 xy->sc_dk.dk_copenmask &= ~(1 << part); 734 break; 735 case S_IFBLK: 736 xy->sc_dk.dk_bopenmask &= ~(1 << part); 737 break; 738 } 739 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 740 741 return 0; 742 } 743 744 /* 745 * xydump: crash dump system 746 */ 747 int 748 xydump(dev, blkno, va, size) 749 dev_t dev; 750 daddr_t blkno; 751 caddr_t va; 752 size_t size; 753 { 754 int unit, part; 755 struct xy_softc *xy; 756 757 unit = DISKUNIT(dev); 758 if (unit >= xy_cd.cd_ndevs) 759 return ENXIO; 760 part = DISKPART(dev); 761 762 xy = xy_cd.cd_devs[unit]; 763 764 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 765 'a' + part); 766 767 return ENXIO; 768 769 /* outline: globals: "dumplo" == sector number of partition to start 770 * dump at (convert to physical sector with partition table) 771 * "dumpsize" == size of dump in clicks "physmem" == size of physical 772 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 773 * physmem) 774 * 775 * dump a copy of physical memory to the dump device starting at sector 776 * "dumplo" in the swap partition (make sure > 0). map in pages as 777 * we go. use polled I/O. 778 * 779 * XXX how to handle NON_CONTIG? */ 780 781 } 782 783 /* 784 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 785 */ 786 int 787 xyioctl(dev, command, addr, flag, p) 788 dev_t dev; 789 u_long command; 790 caddr_t addr; 791 int flag; 792 struct proc *p; 793 794 { 795 struct xy_softc *xy; 796 struct xd_iocmd *xio; 797 int error, s, unit; 798 799 unit = DISKUNIT(dev); 800 801 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 802 return (ENXIO); 803 804 /* switch on ioctl type */ 805 806 switch (command) { 807 case DIOCSBAD: /* set bad144 info */ 808 if ((flag & FWRITE) == 0) 809 return EBADF; 810 s = splbio(); 811 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 812 splx(s); 813 return 0; 814 815 case DIOCGDINFO: /* get disk label */ 816 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 817 return 0; 818 819 case DIOCGPART: /* get partition info */ 820 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 821 ((struct partinfo *) addr)->part = 822 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 823 return 0; 824 825 case DIOCSDINFO: /* set disk label */ 826 if ((flag & FWRITE) == 0) 827 return EBADF; 828 error = setdisklabel(xy->sc_dk.dk_label, 829 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 830 xy->sc_dk.dk_cpulabel); 831 if (error == 0) { 832 if (xy->state == XY_DRIVE_NOLABEL) 833 xy->state = XY_DRIVE_ONLINE; 834 } 835 return error; 836 837 case DIOCWLABEL: /* change write status of disk label */ 838 if ((flag & FWRITE) == 0) 839 return EBADF; 840 if (*(int *) addr) 841 xy->flags |= XY_WLABEL; 842 else 843 xy->flags &= ~XY_WLABEL; 844 return 0; 845 846 case DIOCWDINFO: /* write disk label */ 847 if ((flag & FWRITE) == 0) 848 return EBADF; 849 error = setdisklabel(xy->sc_dk.dk_label, 850 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 851 xy->sc_dk.dk_cpulabel); 852 if (error == 0) { 853 if (xy->state == XY_DRIVE_NOLABEL) 854 xy->state = XY_DRIVE_ONLINE; 855 856 /* Simulate opening partition 0 so write succeeds. */ 857 xy->sc_dk.dk_openmask |= (1 << 0); 858 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 859 xystrategy, xy->sc_dk.dk_label, 860 xy->sc_dk.dk_cpulabel); 861 xy->sc_dk.dk_openmask = 862 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 863 } 864 return error; 865 866 case DIOSXDCMD: 867 xio = (struct xd_iocmd *) addr; 868 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 869 return (error); 870 return (xyc_ioctlcmd(xy, dev, xio)); 871 872 default: 873 return ENOTTY; 874 } 875 } 876 877 /* 878 * xyopen: open drive 879 */ 880 881 int 882 xyopen(dev, flag, fmt, p) 883 dev_t dev; 884 int flag, fmt; 885 struct proc *p; 886 { 887 int unit, part; 888 struct xy_softc *xy; 889 struct xyc_attach_args xa; 890 891 /* first, could it be a valid target? */ 892 893 unit = DISKUNIT(dev); 894 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 895 return (ENXIO); 896 part = DISKPART(dev); 897 898 /* do we need to attach the drive? */ 899 900 if (xy->state == XY_DRIVE_UNKNOWN) { 901 xa.driveno = xy->xy_drive; 902 xa.dvmabuf = (char *)dvma_malloc(XYFM_BPS, &xa.buf, M_NOWAIT); 903 xa.fullmode = XY_SUB_WAIT; 904 xa.booting = 0; 905 xyattach((struct device *) xy->parent, 906 (struct device *) xy, &xa); 907 dvma_free(xa.dvmabuf, XYFM_BPS, &xa.buf); 908 if (xy->state == XY_DRIVE_UNKNOWN) { 909 return (EIO); 910 } 911 } 912 /* check for partition */ 913 914 if (part != RAW_PART && 915 (part >= xy->sc_dk.dk_label->d_npartitions || 916 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 917 return (ENXIO); 918 } 919 /* set open masks */ 920 921 switch (fmt) { 922 case S_IFCHR: 923 xy->sc_dk.dk_copenmask |= (1 << part); 924 break; 925 case S_IFBLK: 926 xy->sc_dk.dk_bopenmask |= (1 << part); 927 break; 928 } 929 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 930 931 return 0; 932 } 933 934 int 935 xyread(dev, uio, flags) 936 dev_t dev; 937 struct uio *uio; 938 int flags; 939 { 940 941 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 942 } 943 944 int 945 xywrite(dev, uio, flags) 946 dev_t dev; 947 struct uio *uio; 948 int flags; 949 { 950 951 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 952 } 953 954 955 /* 956 * xysize: return size of a partition for a dump 957 */ 958 959 int 960 xysize(dev) 961 dev_t dev; 962 963 { 964 struct xy_softc *xysc; 965 int unit, part, size, omask; 966 967 /* valid unit? */ 968 unit = DISKUNIT(dev); 969 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 970 return (-1); 971 972 part = DISKPART(dev); 973 omask = xysc->sc_dk.dk_openmask & (1 << part); 974 975 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 976 return (-1); 977 978 /* do it */ 979 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 980 size = -1; /* only give valid size for swap partitions */ 981 else 982 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 983 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 984 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 985 return (-1); 986 return (size); 987 } 988 989 /* 990 * xystrategy: buffering system interface to xy. 991 */ 992 993 void 994 xystrategy(bp) 995 struct buf *bp; 996 997 { 998 struct xy_softc *xy; 999 int s, unit; 1000 struct xyc_attach_args xa; 1001 1002 unit = DISKUNIT(bp->b_dev); 1003 1004 /* check for live device */ 1005 1006 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1007 bp->b_blkno < 0 || 1008 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1009 bp->b_error = EINVAL; 1010 goto bad; 1011 } 1012 /* do we need to attach the drive? */ 1013 1014 if (xy->state == XY_DRIVE_UNKNOWN) { 1015 xa.driveno = xy->xy_drive; 1016 xa.dvmabuf = (char *)dvma_malloc(XYFM_BPS, &xa.buf, M_NOWAIT); 1017 xa.fullmode = XY_SUB_WAIT; 1018 xa.booting = 0; 1019 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1020 dvma_free(xa.dvmabuf, XYFM_BPS, &xa.buf); 1021 if (xy->state == XY_DRIVE_UNKNOWN) { 1022 bp->b_error = EIO; 1023 goto bad; 1024 } 1025 } 1026 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1027 /* no I/O to unlabeled disks, unless raw partition */ 1028 bp->b_error = EIO; 1029 goto bad; 1030 } 1031 /* short circuit zero length request */ 1032 1033 if (bp->b_bcount == 0) 1034 goto done; 1035 1036 /* check bounds with label (disksubr.c). Determine the size of the 1037 * transfer, and make sure it is within the boundaries of the 1038 * partition. Adjust transfer if needed, and signal errors or early 1039 * completion. */ 1040 1041 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1042 (xy->flags & XY_WLABEL) != 0) <= 0) 1043 goto done; 1044 1045 /* 1046 * now we know we have a valid buf structure that we need to do I/O 1047 * on. 1048 */ 1049 s = splbio(); /* protect the queues */ 1050 1051 disksort(&xy->xyq, bp); 1052 1053 /* start 'em up */ 1054 1055 xyc_start(xy->parent, NULL); 1056 1057 /* done! */ 1058 1059 splx(s); 1060 return; 1061 1062 bad: /* tells upper layers we have an error */ 1063 bp->b_flags |= B_ERROR; 1064 done: /* tells upper layers we are done with this 1065 * buf */ 1066 bp->b_resid = bp->b_bcount; 1067 biodone(bp); 1068 } 1069 /* 1070 * end of {b,c}devsw functions 1071 */ 1072 1073 /* 1074 * i n t e r r u p t f u n c t i o n 1075 * 1076 * xycintr: hardware interrupt. 1077 */ 1078 int 1079 xycintr(v) 1080 void *v; 1081 1082 { 1083 struct xyc_softc *xycsc = v; 1084 1085 /* kick the event counter */ 1086 1087 xycsc->sc_intrcnt.ev_count++; 1088 1089 /* remove as many done IOPBs as possible */ 1090 1091 xyc_remove_iorq(xycsc); 1092 1093 /* start any iorq's already waiting */ 1094 1095 xyc_start(xycsc, NULL); 1096 1097 return (1); 1098 } 1099 /* 1100 * end of interrupt function 1101 */ 1102 1103 /* 1104 * i n t e r n a l f u n c t i o n s 1105 */ 1106 1107 /* 1108 * xyc_rqinit: fill out the fields of an I/O request 1109 */ 1110 1111 inline void 1112 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1113 struct xy_iorq *rq; 1114 struct xyc_softc *xyc; 1115 struct xy_softc *xy; 1116 int md; 1117 u_long blk; 1118 int cnt; 1119 caddr_t db; 1120 struct buf *bp; 1121 { 1122 rq->xyc = xyc; 1123 rq->xy = xy; 1124 rq->ttl = XYC_MAXTTL + 10; 1125 rq->mode = md; 1126 rq->tries = rq->errno = rq->lasterror = 0; 1127 rq->blockno = blk; 1128 rq->sectcnt = cnt; 1129 rq->dbuf = rq->dbufbase = db; 1130 rq->buf = bp; 1131 } 1132 1133 /* 1134 * xyc_rqtopb: load up an IOPB based on an iorq 1135 */ 1136 1137 void 1138 xyc_rqtopb(iorq, iopb, cmd, subfun) 1139 struct xy_iorq *iorq; 1140 struct xy_iopb *iopb; 1141 int cmd, subfun; 1142 1143 { 1144 u_long block, dp; 1145 1146 /* normal IOPB case, standard stuff */ 1147 1148 /* chain bit handled later */ 1149 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1150 iopb->com = cmd; 1151 iopb->errno = 0; 1152 iopb->errs = 0; 1153 iopb->done = 0; 1154 if (iorq->xy) { 1155 iopb->unit = iorq->xy->xy_drive; 1156 iopb->dt = iorq->xy->drive_type; 1157 } else { 1158 iopb->unit = 0; 1159 iopb->dt = 0; 1160 } 1161 block = iorq->blockno; 1162 if (iorq->xy == NULL || block == 0) { 1163 iopb->sect = iopb->head = iopb->cyl = 0; 1164 } else { 1165 iopb->sect = block % iorq->xy->nsect; 1166 block = block / iorq->xy->nsect; 1167 iopb->head = block % iorq->xy->nhead; 1168 block = block / iorq->xy->nhead; 1169 iopb->cyl = block; 1170 } 1171 iopb->scnt = iorq->sectcnt; 1172 dp = (u_long) iorq->dbuf - DVMA_BASE; 1173 if (iorq->dbuf == NULL) { 1174 iopb->dataa = 0; 1175 iopb->datar = 0; 1176 } else { 1177 iopb->dataa = (dp & 0xffff); 1178 iopb->datar = ((dp & 0xff0000) >> 16); 1179 } 1180 iopb->subfn = subfun; 1181 } 1182 1183 1184 /* 1185 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1186 */ 1187 1188 int 1189 xyc_unbusy(xyc, del) 1190 1191 struct xyc *xyc; 1192 int del; 1193 1194 { 1195 while (del-- > 0) { 1196 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1197 break; 1198 DELAY(1); 1199 } 1200 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1201 } 1202 1203 /* 1204 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1205 * note that NORM requests are handled seperately. 1206 */ 1207 int 1208 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1209 struct xyc_softc *xycsc; 1210 int cmd, subfn, unit, block, scnt; 1211 char *dptr; 1212 int fullmode; 1213 1214 { 1215 int submode = XY_STATE(fullmode); 1216 struct xy_iorq *iorq = xycsc->ciorq; 1217 struct xy_iopb *iopb = xycsc->ciopb; 1218 1219 /* 1220 * is someone else using the control iopq wait for it if we can 1221 */ 1222 start: 1223 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1224 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1225 return(XY_ERR_FAIL); 1226 goto start; 1227 } 1228 1229 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1230 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1231 iorq->mode = XY_SUB_FREE; 1232 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1233 } 1234 1235 /* init iorq/iopb */ 1236 1237 xyc_rqinit(iorq, xycsc, 1238 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1239 fullmode, block, scnt, dptr, NULL); 1240 1241 /* load IOPB from iorq */ 1242 1243 xyc_rqtopb(iorq, iopb, cmd, subfn); 1244 1245 /* submit it for processing */ 1246 1247 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1248 1249 return(XY_ERR_AOK); 1250 } 1251 1252 /* 1253 * xyc_startbuf 1254 * start a buffer for running 1255 */ 1256 1257 int 1258 xyc_startbuf(xycsc, xysc, bp) 1259 struct xyc_softc *xycsc; 1260 struct xy_softc *xysc; 1261 struct buf *bp; 1262 1263 { 1264 int partno; 1265 struct xy_iorq *iorq; 1266 struct xy_iopb *iopb; 1267 u_long block; 1268 caddr_t dbuf; 1269 1270 iorq = xysc->xyrq; 1271 iopb = iorq->iopb; 1272 1273 /* get buf */ 1274 1275 if (bp == NULL) 1276 panic("xyc_startbuf null buf"); 1277 1278 partno = DISKPART(bp->b_dev); 1279 #ifdef XYC_DEBUG 1280 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1281 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1282 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1283 bp->b_bcount, bp->b_data); 1284 #endif 1285 1286 /* 1287 * load request. we have to calculate the correct block number based 1288 * on partition info. 1289 * 1290 * note that iorq points to the buffer as mapped into DVMA space, 1291 * where as the bp->b_data points to its non-DVMA mapping. 1292 */ 1293 1294 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1295 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1296 1297 dbuf = kdvma_mapin(bp->b_data, bp->b_bcount, 0); 1298 if (dbuf == NULL) { /* out of DVMA space */ 1299 printf("%s: warning: out of DVMA space\n", 1300 xycsc->sc_dev.dv_xname); 1301 return (XY_ERR_FAIL); /* XXX: need some sort of 1302 * call-back scheme here? */ 1303 } 1304 1305 /* init iorq and load iopb from it */ 1306 1307 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1308 bp->b_bcount / XYFM_BPS, dbuf, bp); 1309 1310 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1311 1312 /* Instrumentation. */ 1313 disk_busy(&xysc->sc_dk); 1314 1315 return (XY_ERR_AOK); 1316 } 1317 1318 1319 /* 1320 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1321 * if ok. if it fail returns an error code. type is XY_SUB_*. 1322 * 1323 * note: caller frees iorq in all cases except NORM 1324 * 1325 * return value: 1326 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1327 * WAIT: XY_AOK (success), <error-code> (failed) 1328 * POLL: <same as WAIT> 1329 * NOQ : <same as NORM> 1330 * 1331 * there are three sources for i/o requests: 1332 * [1] xystrategy: normal block I/O, using "struct buf" system. 1333 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1334 * [3] open/ioctl: these are I/O requests done in the context of a process, 1335 * and the process should block until they are done. 1336 * 1337 * software state is stored in the iorq structure. each iorq has an 1338 * iopb structure. the hardware understands the iopb structure. 1339 * every command must go through an iopb. a 450 handles one iopb at a 1340 * time, where as a 451 can take them in chains. [the 450 claims it 1341 * can handle chains, but is appears to be buggy...] iopb are allocated 1342 * in DVMA space at boot up time. each disk gets one iopb, and the 1343 * controller gets one (for POLL and WAIT commands). what happens if 1344 * the iopb is busy? for i/o type [1], the buffers are queued at the 1345 * "buff" layer and * picked up later by the interrupt routine. for case 1346 * [2] we can only be blocked if there is a WAIT type I/O request being 1347 * run. since this can only happen when we are crashing, we wait a sec 1348 * and then steal the IOPB. for case [3] the process can sleep 1349 * on the iorq free list until some iopbs are avaliable. 1350 */ 1351 1352 1353 int 1354 xyc_submit_iorq(xycsc, iorq, type) 1355 struct xyc_softc *xycsc; 1356 struct xy_iorq *iorq; 1357 int type; 1358 1359 { 1360 struct xy_iopb *iopb; 1361 u_long iopbaddr; 1362 1363 #ifdef XYC_DEBUG 1364 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1365 xycsc->sc_dev.dv_xname, iorq, type); 1366 #endif 1367 1368 /* first check and see if controller is busy */ 1369 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1370 #ifdef XYC_DEBUG 1371 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1372 #endif 1373 if (type == XY_SUB_NOQ) 1374 return (XY_ERR_FAIL); /* failed */ 1375 switch (type) { 1376 case XY_SUB_NORM: 1377 return XY_ERR_AOK; /* success */ 1378 case XY_SUB_WAIT: 1379 while (iorq->iopb->done == 0) { 1380 sleep(iorq, PRIBIO); 1381 } 1382 return (iorq->errno); 1383 case XY_SUB_POLL: /* steal controller */ 1384 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1385 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1386 panic("xyc_submit_iorq: stuck xyc"); 1387 printf("%s: stole controller\n", 1388 xycsc->sc_dev.dv_xname); 1389 break; 1390 default: 1391 panic("xyc_submit_iorq adding"); 1392 } 1393 } 1394 1395 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1396 if (iopb == NULL) { /* nothing doing? */ 1397 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1398 return(XY_ERR_AOK); 1399 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1400 } 1401 iopbaddr = (u_long) iopb - DVMA_BASE; 1402 1403 XYC_GO(xycsc->xyc, iopbaddr); 1404 1405 /* command now running, wrap it up */ 1406 switch (type) { 1407 case XY_SUB_NORM: 1408 case XY_SUB_NOQ: 1409 return (XY_ERR_AOK); /* success */ 1410 case XY_SUB_WAIT: 1411 while (iorq->iopb->done == 0) { 1412 sleep(iorq, PRIBIO); 1413 } 1414 return (iorq->errno); 1415 case XY_SUB_POLL: 1416 return (xyc_piodriver(xycsc, iorq)); 1417 default: 1418 panic("xyc_submit_iorq wrap up"); 1419 } 1420 panic("xyc_submit_iorq"); 1421 return 0; /* not reached */ 1422 } 1423 1424 1425 /* 1426 * xyc_chain: build a chain. return dvma address of first element in 1427 * the chain. iorq != NULL: means we only want that item on the chain. 1428 */ 1429 1430 struct xy_iopb * 1431 xyc_chain(xycsc, iorq) 1432 1433 struct xyc_softc *xycsc; 1434 struct xy_iorq *iorq; 1435 1436 { 1437 int togo, chain, hand; 1438 struct xy_iopb *iopb, *prev_iopb; 1439 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1440 1441 /* 1442 * promote control IOPB to the top 1443 */ 1444 if (iorq == NULL) { 1445 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1446 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1447 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1448 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1449 } 1450 /* 1451 * special case: if iorq != NULL then we have a POLL or WAIT request. 1452 * we let these take priority and do them first. 1453 */ 1454 if (iorq) { 1455 xycsc->xy_chain[0] = iorq; 1456 iorq->iopb->chen = 0; 1457 return(iorq->iopb); 1458 } 1459 1460 /* 1461 * NORM case: do round robin and maybe chain (if allowed and possible) 1462 */ 1463 1464 chain = 0; 1465 hand = xycsc->xy_hand; 1466 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1467 1468 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1469 1470 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1471 xycsc->iopbase[hand].done) 1472 continue; /* not ready-for-i/o */ 1473 1474 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1475 iopb = xycsc->xy_chain[chain]->iopb; 1476 iopb->chen = 0; 1477 if (chain != 0) { /* adding a link to a chain? */ 1478 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1479 prev_iopb->chen = 1; 1480 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1481 } else { /* head of chain */ 1482 iorq = xycsc->xy_chain[chain]; 1483 } 1484 chain++; 1485 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1486 } 1487 return(iorq ? iorq->iopb : NULL); 1488 } 1489 1490 /* 1491 * xyc_piodriver 1492 * 1493 * programmed i/o driver. this function takes over the computer 1494 * and drains off the polled i/o request. it returns the status of the iorq 1495 * the caller is interesting in. 1496 */ 1497 int 1498 xyc_piodriver(xycsc, iorq) 1499 struct xyc_softc *xycsc; 1500 struct xy_iorq *iorq; 1501 1502 { 1503 int nreset = 0; 1504 int retval = 0; 1505 u_long res; 1506 #ifdef XYC_DEBUG 1507 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1508 #endif 1509 1510 while (iorq->iopb->done == 0) { 1511 1512 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1513 1514 /* we expect some progress soon */ 1515 if (res == XY_ERR_FAIL && nreset >= 2) { 1516 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1517 #ifdef XYC_DEBUG 1518 printf("xyc_piodriver: timeout\n"); 1519 #endif 1520 return (XY_ERR_FAIL); 1521 } 1522 if (res == XY_ERR_FAIL) { 1523 if (xyc_reset(xycsc, 0, 1524 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1525 XY_ERR_FAIL, 1526 0) == XY_ERR_FAIL) 1527 return (XY_ERR_FAIL); /* flushes all but POLL 1528 * requests, resets */ 1529 continue; 1530 } 1531 1532 xyc_remove_iorq(xycsc); /* may resubmit request */ 1533 1534 if (iorq->iopb->done == 0) 1535 xyc_start(xycsc, iorq); 1536 } 1537 1538 /* get return value */ 1539 1540 retval = iorq->errno; 1541 1542 #ifdef XYC_DEBUG 1543 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1544 iorq->errno, xyc_e2str(iorq->errno)); 1545 #endif 1546 1547 /* start up any bufs that have queued */ 1548 1549 xyc_start(xycsc, NULL); 1550 1551 return (retval); 1552 } 1553 1554 /* 1555 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1556 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1557 */ 1558 void 1559 xyc_xyreset(xycsc, xysc) 1560 struct xyc_softc *xycsc; 1561 struct xy_softc *xysc; 1562 1563 { 1564 struct xy_iopb tmpiopb; 1565 u_long addr; 1566 int del; 1567 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1568 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1569 xycsc->ciopb->ien = 0; 1570 xycsc->ciopb->com = XYCMD_RST; 1571 xycsc->ciopb->unit = xysc->xy_drive; 1572 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1573 1574 XYC_GO(xycsc->xyc, addr); 1575 1576 del = XYC_RESETUSEC; 1577 while (del > 0) { 1578 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1579 DELAY(1); 1580 del--; 1581 } 1582 1583 if (del <= 0 || xycsc->ciopb->errs) { 1584 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1585 xyc_e2str(xycsc->ciopb->errno)); 1586 del = xycsc->xyc->xyc_rsetup; 1587 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1588 panic("xyc_reset"); 1589 } else { 1590 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1591 } 1592 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1593 } 1594 1595 1596 /* 1597 * xyc_reset: reset everything: requests are marked as errors except 1598 * a polled request (which is resubmitted) 1599 */ 1600 int 1601 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1602 struct xyc_softc *xycsc; 1603 int quiet, error; 1604 struct xy_iorq *blastmode; 1605 struct xy_softc *xysc; 1606 1607 { 1608 int del = 0, lcv, retval = XY_ERR_AOK; 1609 1610 /* soft reset hardware */ 1611 1612 if (!quiet) 1613 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1614 del = xycsc->xyc->xyc_rsetup; 1615 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1616 if (del == XY_ERR_FAIL) { 1617 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1618 retval = XY_ERR_FAIL; 1619 } 1620 if (xysc) 1621 xyc_xyreset(xycsc, xysc); 1622 1623 /* fix queues based on "blast-mode" */ 1624 1625 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1626 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1627 1628 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1629 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1630 XY_STATE(iorq->mode) != XY_SUB_NORM) 1631 /* is it active? */ 1632 continue; 1633 1634 if (blastmode == XY_RSET_ALL || 1635 blastmode != iorq) { 1636 /* failed */ 1637 iorq->errno = error; 1638 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1639 switch (XY_STATE(iorq->mode)) { 1640 case XY_SUB_NORM: 1641 iorq->buf->b_error = EIO; 1642 iorq->buf->b_flags |= B_ERROR; 1643 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1644 dvma_mapout((vm_offset_t)iorq->dbufbase, 1645 (vm_offset_t)iorq->buf->b_un.b_addr, 1646 iorq->buf->b_bcount); 1647 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1648 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1649 (xycsc->reqs[lcv].buf->b_bcount - 1650 xycsc->reqs[lcv].buf->b_resid)); 1651 biodone(iorq->buf); 1652 iorq->mode = XY_SUB_FREE; 1653 break; 1654 case XY_SUB_WAIT: 1655 wakeup(iorq); 1656 case XY_SUB_POLL: 1657 iorq->mode = 1658 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1659 break; 1660 } 1661 1662 } else { 1663 1664 /* resubmit, no need to do anything here */ 1665 } 1666 } 1667 1668 /* 1669 * now, if stuff is waiting, start it. 1670 * since we just reset it should go 1671 */ 1672 xyc_start(xycsc, NULL); 1673 1674 return (retval); 1675 } 1676 1677 /* 1678 * xyc_start: start waiting buffers 1679 */ 1680 1681 void 1682 xyc_start(xycsc, iorq) 1683 struct xyc_softc *xycsc; 1684 struct xy_iorq *iorq; 1685 1686 { 1687 int lcv; 1688 struct xy_softc *xy; 1689 1690 if (iorq == NULL) { 1691 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1692 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1693 if (xy->xyq.b_actf == NULL) continue; 1694 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1695 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1696 } 1697 } 1698 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1699 } 1700 1701 /* 1702 * xyc_remove_iorq: remove "done" IOPB's. 1703 */ 1704 1705 int 1706 xyc_remove_iorq(xycsc) 1707 struct xyc_softc *xycsc; 1708 1709 { 1710 int errno, rq, comm, errs; 1711 struct xyc *xyc = xycsc->xyc; 1712 u_long addr; 1713 struct xy_iopb *iopb; 1714 struct xy_iorq *iorq; 1715 struct buf *bp; 1716 1717 if (xyc->xyc_csr & XYC_DERR) { 1718 /* 1719 * DOUBLE ERROR: should never happen under normal use. This 1720 * error is so bad, you can't even tell which IOPB is bad, so 1721 * we dump them all. 1722 */ 1723 errno = XY_ERR_DERR; 1724 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1725 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1726 printf("%s: soft reset failed!\n", 1727 xycsc->sc_dev.dv_xname); 1728 panic("xyc_remove_iorq: controller DEAD"); 1729 } 1730 return (XY_ERR_AOK); 1731 } 1732 1733 /* 1734 * get iopb that is done, loop down the chain 1735 */ 1736 1737 if (xyc->xyc_csr & XYC_ERR) { 1738 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1739 } 1740 if (xyc->xyc_csr & XYC_IPND) { 1741 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1742 } 1743 1744 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1745 iorq = xycsc->xy_chain[rq]; 1746 if (iorq == NULL) break; /* done ! */ 1747 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1748 continue; /* free, or done */ 1749 iopb = iorq->iopb; 1750 if (iopb->done == 0) 1751 continue; /* not done yet */ 1752 1753 comm = iopb->com; 1754 errs = iopb->errs; 1755 1756 if (errs) 1757 iorq->errno = iopb->errno; 1758 else 1759 iorq->errno = 0; 1760 1761 /* handle non-fatal errors */ 1762 1763 if (errs && 1764 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1765 continue; /* AOK: we resubmitted it */ 1766 1767 1768 /* this iorq is now done (hasn't been restarted or anything) */ 1769 1770 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1771 xyc_perror(iorq, iopb, 0); 1772 1773 /* now, if read/write check to make sure we got all the data 1774 * we needed. (this may not be the case if we got an error in 1775 * the middle of a multisector request). */ 1776 1777 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1778 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1779 /* we just successfully processed a bad144 sector 1780 * note: if we are in bad 144 mode, the pointers have 1781 * been advanced already (see above) and are pointing 1782 * at the bad144 sector. to exit bad144 mode, we 1783 * must advance the pointers 1 sector and issue a new 1784 * request if there are still sectors left to process 1785 * 1786 */ 1787 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1788 1789 /* exit b144 mode */ 1790 iorq->mode = iorq->mode & (~XY_MODE_B144); 1791 1792 if (iorq->sectcnt) { /* more to go! */ 1793 iorq->lasterror = iorq->errno = iopb->errno = 0; 1794 iopb->errs = iopb->done = 0; 1795 iorq->tries = 0; 1796 iopb->scnt = iorq->sectcnt; 1797 iopb->cyl = iorq->blockno / 1798 iorq->xy->sectpercyl; 1799 iopb->head = 1800 (iorq->blockno / iorq->xy->nhead) % 1801 iorq->xy->nhead; 1802 iopb->sect = iorq->blockno % XYFM_BPS; 1803 addr = (u_long) iorq->dbuf - DVMA_BASE; 1804 iopb->dataa = (addr & 0xffff); 1805 iopb->datar = ((addr & 0xff0000) >> 16); 1806 /* will resubit at end */ 1807 continue; 1808 } 1809 } 1810 /* final cleanup, totally done with this request */ 1811 1812 switch (XY_STATE(iorq->mode)) { 1813 case XY_SUB_NORM: 1814 bp = iorq->buf; 1815 if (errs) { 1816 bp->b_error = EIO; 1817 bp->b_flags |= B_ERROR; 1818 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1819 } else { 1820 bp->b_resid = 0; /* done */ 1821 } 1822 dvma_mapout((vm_offset_t) iorq->dbufbase, 1823 (vm_offset_t) bp->b_un.b_addr, 1824 bp->b_bcount); 1825 iorq->xy->xyq.b_actf = bp->b_actf; 1826 disk_unbusy(&iorq->xy->sc_dk, 1827 (bp->b_bcount - bp->b_resid)); 1828 iorq->mode = XY_SUB_FREE; 1829 biodone(bp); 1830 break; 1831 case XY_SUB_WAIT: 1832 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1833 wakeup(iorq); 1834 break; 1835 case XY_SUB_POLL: 1836 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1837 break; 1838 } 1839 } 1840 1841 return (XY_ERR_AOK); 1842 } 1843 1844 /* 1845 * xyc_perror: print error. 1846 * - if still_trying is true: we got an error, retried and got a 1847 * different error. in that case lasterror is the old error, 1848 * and errno is the new one. 1849 * - if still_trying is not true, then if we ever had an error it 1850 * is in lasterror. also, if iorq->errno == 0, then we recovered 1851 * from that error (otherwise iorq->errno == iorq->lasterror). 1852 */ 1853 void 1854 xyc_perror(iorq, iopb, still_trying) 1855 struct xy_iorq *iorq; 1856 struct xy_iopb *iopb; 1857 int still_trying; 1858 1859 { 1860 1861 int error = iorq->lasterror; 1862 1863 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1864 : iorq->xyc->sc_dev.dv_xname); 1865 if (iorq->buf) 1866 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1867 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1868 printf("%s %d/%d/%d: ", 1869 (iopb->com == XYCMD_RD) ? "read" : "write", 1870 iopb->cyl, iopb->head, iopb->sect); 1871 printf("%s", xyc_e2str(error)); 1872 1873 if (still_trying) 1874 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1875 else 1876 if (iorq->errno == 0) 1877 printf(" [recovered in %d tries]", iorq->tries); 1878 1879 printf("\n"); 1880 } 1881 1882 /* 1883 * xyc_error: non-fatal error encountered... recover. 1884 * return AOK if resubmitted, return FAIL if this iopb is done 1885 */ 1886 int 1887 xyc_error(xycsc, iorq, iopb, comm) 1888 struct xyc_softc *xycsc; 1889 struct xy_iorq *iorq; 1890 struct xy_iopb *iopb; 1891 int comm; 1892 1893 { 1894 int errno = iorq->errno; 1895 int erract = xyc_entoact(errno); 1896 int oldmode, advance, i; 1897 1898 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1899 oldmode = iorq->mode; 1900 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1901 /* make xyc_start ignore us */ 1902 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1903 iorq->mode = oldmode; 1904 } 1905 /* check for read/write to a sector in bad144 table if bad: redirect 1906 * request to bad144 area */ 1907 1908 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1909 (iorq->mode & XY_MODE_B144) == 0) { 1910 advance = iorq->sectcnt - iopb->scnt; 1911 XYC_ADVANCE(iorq, advance); 1912 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1913 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1914 iorq->blockno % iorq->xy->nsect)) != -1) { 1915 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1916 * redirect */ 1917 iopb->errno = iopb->done = iopb->errs = 0; 1918 iopb->scnt = 1; 1919 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1920 /* second to last acyl */ 1921 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1922 * standard */ 1923 iopb->head = i / iorq->xy->nhead; 1924 iopb->sect = i % iorq->xy->nhead; 1925 /* will resubmit when we come out of remove_iorq */ 1926 return (XY_ERR_AOK); /* recovered! */ 1927 } 1928 } 1929 1930 /* 1931 * it isn't a bad144 sector, must be real error! see if we can retry 1932 * it? 1933 */ 1934 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1935 xyc_perror(iorq, iopb, 1); /* inform of error state 1936 * change */ 1937 iorq->lasterror = errno; 1938 1939 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1940 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1941 iorq->tries++; 1942 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1943 /* will resubmit at end of remove_iorq */ 1944 return (XY_ERR_AOK); /* recovered! */ 1945 } 1946 1947 /* failed to recover from this error */ 1948 return (XY_ERR_FAIL); 1949 } 1950 1951 /* 1952 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1953 */ 1954 void 1955 xyc_tick(arg) 1956 void *arg; 1957 1958 { 1959 struct xyc_softc *xycsc = arg; 1960 int lcv, s, reset = 0; 1961 1962 /* reduce ttl for each request if one goes to zero, reset xyc */ 1963 s = splbio(); 1964 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1965 if (xycsc->reqs[lcv].mode == 0 || 1966 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1967 continue; 1968 xycsc->reqs[lcv].ttl--; 1969 if (xycsc->reqs[lcv].ttl == 0) 1970 reset = 1; 1971 } 1972 if (reset) { 1973 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1974 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1975 } 1976 splx(s); 1977 1978 /* until next time */ 1979 1980 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1981 } 1982 1983 /* 1984 * xyc_ioctlcmd: this function provides a user level interface to the 1985 * controller via ioctl. this allows "format" programs to be written 1986 * in user code, and is also useful for some debugging. we return 1987 * an error code. called at user priority. 1988 * 1989 * XXX missing a few commands (see the 7053 driver for ideas) 1990 */ 1991 int 1992 xyc_ioctlcmd(xy, dev, xio) 1993 struct xy_softc *xy; 1994 dev_t dev; 1995 struct xd_iocmd *xio; 1996 1997 { 1998 int s, err, rqno, dummy = 0; 1999 caddr_t dvmabuf = NULL, buf = NULL; 2000 struct xyc_softc *xycsc; 2001 2002 /* check sanity of requested command */ 2003 2004 switch (xio->cmd) { 2005 2006 case XYCMD_NOP: /* no op: everything should be zero */ 2007 if (xio->subfn || xio->dptr || xio->dlen || 2008 xio->block || xio->sectcnt) 2009 return (EINVAL); 2010 break; 2011 2012 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2013 case XYCMD_WR: 2014 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2015 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2016 return (EINVAL); 2017 break; 2018 2019 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2020 return (EINVAL); 2021 2022 break; 2023 2024 default: 2025 return (EINVAL);/* ??? */ 2026 } 2027 2028 /* create DVMA buffer for request if needed */ 2029 2030 if (xio->dlen) { 2031 dvmabuf = dvma_malloc(xio->dlen, &buf, M_WAITOK); 2032 if (xio->cmd == XYCMD_WR) { 2033 if ((err = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2034 dvma_free(dvmabuf, xio->dlen, &buf); 2035 return (err); 2036 } 2037 } 2038 } 2039 /* do it! */ 2040 2041 err = 0; 2042 xycsc = xy->parent; 2043 s = splbio(); 2044 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2045 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2046 if (rqno == XY_ERR_FAIL) { 2047 err = EIO; 2048 goto done; 2049 } 2050 xio->errno = xycsc->ciorq->errno; 2051 xio->tries = xycsc->ciorq->tries; 2052 XYC_DONE(xycsc, dummy); 2053 2054 if (xio->cmd == XYCMD_RD) 2055 err = copyout(buf, xio->dptr, xio->dlen); 2056 2057 done: 2058 splx(s); 2059 if (dvmabuf) 2060 dvma_free(dvmabuf, xio->dlen, &buf); 2061 return (err); 2062 } 2063 2064 /* 2065 * xyc_e2str: convert error code number into an error string 2066 */ 2067 char * 2068 xyc_e2str(no) 2069 int no; 2070 { 2071 switch (no) { 2072 case XY_ERR_FAIL: 2073 return ("Software fatal error"); 2074 case XY_ERR_DERR: 2075 return ("DOUBLE ERROR"); 2076 case XY_ERR_AOK: 2077 return ("Successful completion"); 2078 case XY_ERR_IPEN: 2079 return("Interrupt pending"); 2080 case XY_ERR_BCFL: 2081 return("Busy conflict"); 2082 case XY_ERR_TIMO: 2083 return("Operation timeout"); 2084 case XY_ERR_NHDR: 2085 return("Header not found"); 2086 case XY_ERR_HARD: 2087 return("Hard ECC error"); 2088 case XY_ERR_ICYL: 2089 return("Illegal cylinder address"); 2090 case XY_ERR_ISEC: 2091 return("Illegal sector address"); 2092 case XY_ERR_SMAL: 2093 return("Last sector too small"); 2094 case XY_ERR_SACK: 2095 return("Slave ACK error (non-existent memory)"); 2096 case XY_ERR_CHER: 2097 return("Cylinder and head/header error"); 2098 case XY_ERR_SRTR: 2099 return("Auto-seek retry successful"); 2100 case XY_ERR_WPRO: 2101 return("Write-protect error"); 2102 case XY_ERR_UIMP: 2103 return("Unimplemented command"); 2104 case XY_ERR_DNRY: 2105 return("Drive not ready"); 2106 case XY_ERR_SZER: 2107 return("Sector count zero"); 2108 case XY_ERR_DFLT: 2109 return("Drive faulted"); 2110 case XY_ERR_ISSZ: 2111 return("Illegal sector size"); 2112 case XY_ERR_SLTA: 2113 return("Self test A"); 2114 case XY_ERR_SLTB: 2115 return("Self test B"); 2116 case XY_ERR_SLTC: 2117 return("Self test C"); 2118 case XY_ERR_SOFT: 2119 return("Soft ECC error"); 2120 case XY_ERR_SFOK: 2121 return("Soft ECC error recovered"); 2122 case XY_ERR_IHED: 2123 return("Illegal head"); 2124 case XY_ERR_DSEQ: 2125 return("Disk sequencer error"); 2126 case XY_ERR_SEEK: 2127 return("Seek error"); 2128 default: 2129 return ("Unknown error"); 2130 } 2131 } 2132 2133 int 2134 xyc_entoact(errno) 2135 2136 int errno; 2137 2138 { 2139 switch (errno) { 2140 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2141 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2142 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2143 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2144 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2145 2146 return(XY_ERA_PROG); /* program error ! */ 2147 2148 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2149 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2150 case XY_ERR_SOFT: 2151 2152 return(XY_ERA_HARD); /* hard error, retry */ 2153 2154 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2155 2156 return(XY_ERA_RSET); /* hard error reset */ 2157 2158 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2159 2160 return(XY_ERA_SOFT); /* an FYI error */ 2161 2162 case XY_ERR_WPRO: 2163 2164 return(XY_ERA_WPRO); /* write protect */ 2165 } 2166 2167 return(XY_ERA_PROG); /* ??? */ 2168 } 2169
Indexes created Tue Sep 30 11:09:46 GMT 2025