xy.c revision 1.3
1 /* $NetBSD: xy.c,v 1.3 1998/01/12 09:54:59 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 1.3 1998/01/12 09:54:59 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/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 * cfattach's: device driver interface to autoconfig 186 */ 187 188 struct cfattach xyc_ca = { 189 sizeof(struct xyc_softc), xycmatch, xycattach 190 }; 191 192 struct cfattach xy_ca = { 193 sizeof(struct xy_softc), xymatch, xyattach 194 }; 195 196 extern struct cfdriver xy_cd; 197 198 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 199 int driveno; /* unit number */ 200 int fullmode; /* submit mode */ 201 int booting; /* are we booting or not? */ 202 }; 203 204 /* 205 * dkdriver 206 */ 207 208 struct dkdriver xydkdriver = { xystrategy }; 209 210 /* 211 * start: disk label fix code (XXX) 212 */ 213 214 static void *xy_labeldata; 215 216 static void 217 xydummystrat(bp) 218 struct buf *bp; 219 { 220 if (bp->b_bcount != XYFM_BPS) 221 panic("xydummystrat"); 222 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 223 bp->b_flags |= B_DONE; 224 bp->b_flags &= ~B_BUSY; 225 } 226 227 int 228 xygetdisklabel(xy, b) 229 struct xy_softc *xy; 230 void *b; 231 { 232 char *err; 233 struct sun_disklabel *sdl; 234 235 /* We already have the label data in `b'; setup for dummy strategy */ 236 xy_labeldata = b; 237 238 /* Required parameter for readdisklabel() */ 239 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 240 241 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 242 xydummystrat, 243 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 244 if (err) { 245 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 246 return(XY_ERR_FAIL); 247 } 248 249 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 250 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 251 if (sdl->sl_magic == SUN_DKMAGIC) 252 xy->pcyl = sdl->sl_pcylinders; 253 else { 254 printf("%s: WARNING: no `pcyl' in disk label.\n", 255 xy->sc_dev.dv_xname); 256 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 257 xy->sc_dk.dk_label->d_acylinders; 258 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 259 xy->sc_dev.dv_xname, xy->pcyl); 260 } 261 262 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 263 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 264 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 265 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 266 xy->sectpercyl = xy->nhead * xy->nsect; 267 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 268 * sun->bsd */ 269 return(XY_ERR_AOK); 270 } 271 272 /* 273 * end: disk label fix code (XXX) 274 */ 275 276 /* 277 * a u t o c o n f i g f u n c t i o n s 278 */ 279 280 /* 281 * xycmatch: determine if xyc is present or not. we do a 282 * soft reset to detect the xyc. 283 */ 284 285 int xycmatch(parent, cf, aux) 286 struct device *parent; 287 struct cfdata *cf; 288 void *aux; 289 { 290 struct vme_attach_args *va = aux; 291 vme_chipset_tag_t ct = va->vma_chipset_tag; 292 bus_space_tag_t bt = va->vma_bustag; 293 struct xyc *xyc; 294 vme_mod_t mod; 295 296 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 297 298 xyc = (struct xyc *) va->vma_reg[0]; 299 if (vme_bus_probe(ct, bt, (vme_addr_t)&xyc->xyc_rsetup, 1, mod)) { 300 if (xyc_unbusy(xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 301 return(0); 302 return (1); 303 } 304 return (0); 305 } 306 307 /* 308 * xycattach: attach controller 309 */ 310 void 311 xycattach(parent, self, aux) 312 struct device *parent, *self; 313 void *aux; 314 315 { 316 struct vme_attach_args *va = aux; 317 vme_chipset_tag_t ct = va->vma_chipset_tag; 318 bus_space_tag_t bt = va->vma_bustag; 319 bus_space_handle_t bh; 320 vme_intr_handle_t ih; 321 vme_mod_t mod; 322 struct xyc_softc *xyc = (void *) self; 323 struct xyc_attach_args xa; 324 int lcv, res, pbsz, error; 325 bus_dma_segment_t seg; 326 int rseg; 327 328 /* get addressing and intr level stuff from autoconfig and load it 329 * into our xyc_softc. */ 330 331 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 332 333 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 334 mod, bt, &bh) != 0) 335 panic("xyc: vme_map"); 336 337 xyc->xyc = (struct xyc *) bh; 338 xyc->ipl = va->vma_pri; 339 xyc->vector = va->vma_vec; 340 printf(" pri %d", va->vma_pri); 341 xyc->no_ols = 0; /* XXX should be from config */ 342 343 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 344 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 345 346 /* 347 * allocate and zero buffers 348 * check boundaries of the KVA's ... all IOPBs must reside in 349 * the same 64K region. 350 */ 351 352 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 353 354 error = bus_dmamem_alloc( 355 xyc->dmatag, 356 pbsz, /* size */ 357 64*1024, /* boundary */ 358 0, /* alignment */ 359 &seg, 360 1, /* # of segments */ 361 &rseg, /* actual # of segments */ 362 BUS_DMA_NOWAIT); 363 if (error) { 364 printf("%s: DMA buffer map error %d\n", 365 xyc->sc_dev.dv_xname, error); 366 return; 367 } 368 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 369 370 error = bus_dmamem_map( 371 xyc->dmatag, 372 &seg, 373 rseg, 374 XYC_MAXIOPB * sizeof(struct xy_iopb), 375 (caddr_t *)&xyc->iopbase, 376 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC); 377 if (error) { 378 bus_dmamem_free(xyc->dmatag, &seg, rseg); 379 printf("%s: DMA buffer map error %d\n", 380 xyc->sc_dev.dv_xname, error); 381 return; 382 } 383 bzero(xyc->iopbase, pbsz); 384 385 xyc->reqs = (struct xy_iorq *) 386 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 387 if (xyc->reqs == NULL) 388 panic("xyc malloc"); 389 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 390 391 /* 392 * init iorq to iopb pointers, and non-zero fields in the 393 * iopb which never change. 394 */ 395 396 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 397 xyc->xy_chain[lcv] = NULL; 398 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 399 xyc->iopbase[lcv].asr = 1; /* always the same */ 400 xyc->iopbase[lcv].eef = 1; /* always the same */ 401 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 402 xyc->iopbase[lcv].aud = 1; /* always the same */ 403 xyc->iopbase[lcv].relo = 1; /* always the same */ 404 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 405 406 error = bus_dmamap_create( 407 xyc->dmatag, 408 MAXPHYS, /* size */ 409 1, /* nsegments */ 410 MAXPHYS, /* maxsegsz */ 411 0, /* boundary */ 412 BUS_DMA_NOWAIT, 413 &xyc->reqs[lcv].dmamap); 414 if (error) { 415 printf("%s: DMA buffer map create error %d\n", 416 xyc->sc_dev.dv_xname, error); 417 return; 418 } 419 } 420 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 421 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 422 xyc->xy_hand = 0; 423 424 /* read controller parameters and insure we have a 450/451 */ 425 426 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 427 res = xyc->ciopb->ctyp; 428 XYC_DONE(xyc, error); 429 if (res != XYCT_450) { 430 if (error) 431 printf(": %s: ", xyc_e2str(error)); 432 printf(": doesn't identify as a 450/451\n"); 433 return; 434 } 435 printf(": Xylogics 450/451"); 436 if (xyc->no_ols) 437 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 438 printf("\n"); 439 if (error) { 440 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 441 xyc_e2str(error)); 442 return; 443 } 444 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 445 printf("%s: 24 bit addressing turned off\n", 446 xyc->sc_dev.dv_xname); 447 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 448 printf("to enable 24 bit mode and this driver\n"); 449 return; 450 } 451 452 /* link in interrupt with higher level software */ 453 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 454 vme_intr_establish(ct, ih, xycintr, xyc); 455 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 456 457 458 /* now we must look for disks using autoconfig */ 459 xa.fullmode = XY_SUB_POLL; 460 xa.booting = 1; 461 462 #if 0 /* XXX - deal with this disksubr */ 463 if (ca->ca_ra.ra_bp && ca->ca_ra.ra_bp->val[0] == -1 && 464 ca->ca_ra.ra_bp->val[1] == xyc->sc_dev.dv_unit) { 465 bootpath_store(1, ca->ca_ra.ra_bp + 1); /* advance bootpath */ 466 } 467 #endif 468 469 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 470 (void) config_found(self, (void *) &xa, NULL); 471 472 #if 0 473 bootpath_store(1, NULL); 474 #endif 475 476 /* start the watchdog clock */ 477 timeout(xyc_tick, xyc, XYC_TICKCNT); 478 479 } 480 481 /* 482 * xymatch: probe for disk. 483 * 484 * note: we almost always say disk is present. this allows us to 485 * spin up and configure a disk after the system is booted (we can 486 * call xyattach!). 487 */ 488 int 489 xymatch(parent, cf, aux) 490 struct device *parent; 491 struct cfdata *cf; 492 void *aux; 493 { 494 struct xyc_attach_args *xa = aux; 495 496 /* looking for autoconf wildcard or exact match */ 497 498 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 499 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 500 return 0; 501 502 return 1; 503 504 } 505 506 /* 507 * xyattach: attach a disk. this can be called from autoconf and also 508 * from xyopen/xystrategy. 509 */ 510 void 511 xyattach(parent, self, aux) 512 struct device *parent, *self; 513 void *aux; 514 515 { 516 struct xy_softc *xy = (void *) self, *oxy; 517 struct xyc_softc *xyc = (void *) parent; 518 struct xyc_attach_args *xa = aux; 519 int spt, mb, blk, lcv, fmode, s = 0, newstate; 520 struct dkbad *dkb; 521 struct bootpath *bp; 522 int rseg, error; 523 bus_dma_segment_t seg; 524 caddr_t dmaddr; 525 caddr_t buf; 526 527 /* 528 * Always re-initialize the disk structure. We want statistics 529 * to start with a clean slate. 530 */ 531 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 532 xy->sc_dk.dk_driver = &xydkdriver; 533 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 534 535 /* if booting, init the xy_softc */ 536 537 if (xa->booting) { 538 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 539 xy->flags = 0; 540 xy->parent = xyc; 541 542 /* init queue of waiting bufs */ 543 544 xy->xyq.b_active = 0; 545 xy->xyq.b_actf = 0; 546 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 547 548 xy->xyrq = &xyc->reqs[xa->driveno]; 549 550 } 551 xy->xy_drive = xa->driveno; 552 fmode = xa->fullmode; 553 xyc->sc_drives[xa->driveno] = xy; 554 555 /* if not booting, make sure we are the only process in the attach for 556 * this drive. if locked out, sleep on it. */ 557 558 if (!xa->booting) { 559 s = splbio(); 560 while (xy->state == XY_DRIVE_ATTACHING) { 561 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 562 splx(s); 563 return; 564 } 565 } 566 printf("%s at %s", 567 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 568 } 569 570 /* we now have control */ 571 xy->state = XY_DRIVE_ATTACHING; 572 newstate = XY_DRIVE_UNKNOWN; 573 574 buf = NULL; 575 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 576 &seg, 1, &rseg, BUS_DMA_NOWAIT); 577 if (error) { 578 printf("%s: DMA buffer alloc error %d\n", 579 xy->sc_dev.dv_xname, error); 580 goto done; 581 } 582 dmaddr = (caddr_t)seg.ds_addr; 583 584 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 585 &buf, 586 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC); 587 if (error) { 588 printf("%s: DMA buffer alloc error %d\n", 589 xy->sc_dev.dv_xname, error); 590 bus_dmamem_free(xyc->dmatag, &seg, rseg); 591 goto done; 592 } 593 594 595 /* first try and reset the drive */ 596 597 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 598 XYC_DONE(xyc, error); 599 if (error == XY_ERR_DNRY) { 600 printf(" drive %d: off-line\n", xa->driveno); 601 goto done; 602 } 603 if (error) { 604 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 605 goto done; 606 } 607 printf(" drive %d: ready", xa->driveno); 608 609 /* 610 * now set drive parameters (to semi-bogus values) so we can read the 611 * disk label. 612 */ 613 xy->pcyl = xy->ncyl = 1; 614 xy->acyl = 0; 615 xy->nhead = 1; 616 xy->nsect = 1; 617 xy->sectpercyl = 1; 618 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 619 xy->dkb.bt_bad[lcv].bt_cyl = 620 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 621 622 /* read disk label */ 623 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 624 xy->drive_type++) { 625 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 626 dmaddr, fmode); 627 XYC_DONE(xyc, error); 628 if (error == XY_ERR_AOK) break; 629 } 630 631 if (error != XY_ERR_AOK) { 632 printf("\n%s: reading disk label failed: %s\n", 633 xy->sc_dev.dv_xname, xyc_e2str(error)); 634 goto done; 635 } 636 printf(" (drive type %d)\n", xy->drive_type); 637 638 newstate = XY_DRIVE_NOLABEL; 639 640 xy->hw_spt = spt = 0; /* XXX needed ? */ 641 /* Attach the disk: must be before getdisklabel to malloc label */ 642 disk_attach(&xy->sc_dk); 643 644 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 645 goto done; 646 647 /* inform the user of what is up */ 648 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 649 buf, xy->pcyl); 650 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 651 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 652 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 653 XYFM_BPS); 654 655 /* 656 * 450/451 stupidity: the drive type is encoded into the format 657 * of the disk. the drive type in the IOPB must match the drive 658 * type in the format, or you will not be able to do I/O to the 659 * disk (you get header not found errors). if you have two drives 660 * of different sizes that have the same drive type in their 661 * formatting then you are out of luck. 662 * 663 * this problem was corrected in the 753/7053. 664 */ 665 666 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 667 oxy = xyc->sc_drives[lcv]; 668 if (oxy == NULL || oxy == xy) continue; 669 if (oxy->drive_type != xy->drive_type) continue; 670 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 671 xy->nhead != oxy->nhead) { 672 printf("%s: %s and %s must be the same size!\n", 673 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 674 oxy->sc_dev.dv_xname); 675 panic("xy drive size mismatch"); 676 } 677 } 678 679 680 /* now set the real drive parameters! */ 681 682 blk = (xy->nsect - 1) + 683 ((xy->nhead - 1) * xy->nsect) + 684 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 685 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 686 XYC_DONE(xyc, error); 687 if (error) { 688 printf("%s: write drive size failed: %s\n", 689 xy->sc_dev.dv_xname, xyc_e2str(error)); 690 goto done; 691 } 692 newstate = XY_DRIVE_ONLINE; 693 694 /* 695 * read bad144 table. this table resides on the first sector of the 696 * last track of the disk (i.e. second cyl of "acyl" area). 697 */ 698 699 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 700 /* last cyl */ 701 (xy->nhead - 1) * xy->nsect; /* last head */ 702 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 703 dmaddr, fmode); 704 XYC_DONE(xyc, error); 705 if (error) { 706 printf("%s: reading bad144 failed: %s\n", 707 xy->sc_dev.dv_xname, xyc_e2str(error)); 708 goto done; 709 } 710 711 /* check dkbad for sanity */ 712 dkb = (struct dkbad *) buf; 713 for (lcv = 0; lcv < 126; lcv++) { 714 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 715 dkb->bt_bad[lcv].bt_cyl == 0) && 716 dkb->bt_bad[lcv].bt_trksec == 0xffff) 717 continue; /* blank */ 718 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 719 break; 720 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 721 break; 722 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 723 break; 724 } 725 if (lcv != 126) { 726 printf("%s: warning: invalid bad144 sector!\n", 727 xy->sc_dev.dv_xname); 728 } else { 729 bcopy(buf, &xy->dkb, XYFM_BPS); 730 } 731 732 if (xa->booting) { 733 /* restore bootpath! (do this via attach_args again?)*/ 734 bp = bootpath_store(0, NULL); 735 if (bp && strcmp("xy", bp->name) == 0 && 736 xy->xy_drive == bp->val[0]) 737 bp->dev = &xy->sc_dev; 738 } 739 740 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 741 742 done: 743 if (buf != NULL) { 744 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 745 bus_dmamem_free(xyc->dmatag, &seg, rseg); 746 } 747 748 xy->state = newstate; 749 if (!xa->booting) { 750 wakeup(&xy->state); 751 splx(s); 752 } 753 } 754 755 /* 756 * end of autoconfig functions 757 */ 758 759 /* 760 * { b , c } d e v s w f u n c t i o n s 761 */ 762 763 /* 764 * xyclose: close device 765 */ 766 int 767 xyclose(dev, flag, fmt, p) 768 dev_t dev; 769 int flag, fmt; 770 struct proc *p; 771 772 { 773 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 774 int part = DISKPART(dev); 775 776 /* clear mask bits */ 777 778 switch (fmt) { 779 case S_IFCHR: 780 xy->sc_dk.dk_copenmask &= ~(1 << part); 781 break; 782 case S_IFBLK: 783 xy->sc_dk.dk_bopenmask &= ~(1 << part); 784 break; 785 } 786 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 787 788 return 0; 789 } 790 791 /* 792 * xydump: crash dump system 793 */ 794 int 795 xydump(dev, blkno, va, size) 796 dev_t dev; 797 daddr_t blkno; 798 caddr_t va; 799 size_t size; 800 { 801 int unit, part; 802 struct xy_softc *xy; 803 804 unit = DISKUNIT(dev); 805 if (unit >= xy_cd.cd_ndevs) 806 return ENXIO; 807 part = DISKPART(dev); 808 809 xy = xy_cd.cd_devs[unit]; 810 811 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 812 'a' + part); 813 814 return ENXIO; 815 816 /* outline: globals: "dumplo" == sector number of partition to start 817 * dump at (convert to physical sector with partition table) 818 * "dumpsize" == size of dump in clicks "physmem" == size of physical 819 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 820 * physmem) 821 * 822 * dump a copy of physical memory to the dump device starting at sector 823 * "dumplo" in the swap partition (make sure > 0). map in pages as 824 * we go. use polled I/O. 825 * 826 * XXX how to handle NON_CONTIG? */ 827 828 } 829 830 /* 831 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 832 */ 833 int 834 xyioctl(dev, command, addr, flag, p) 835 dev_t dev; 836 u_long command; 837 caddr_t addr; 838 int flag; 839 struct proc *p; 840 841 { 842 struct xy_softc *xy; 843 struct xd_iocmd *xio; 844 int error, s, unit; 845 846 unit = DISKUNIT(dev); 847 848 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 849 return (ENXIO); 850 851 /* switch on ioctl type */ 852 853 switch (command) { 854 case DIOCSBAD: /* set bad144 info */ 855 if ((flag & FWRITE) == 0) 856 return EBADF; 857 s = splbio(); 858 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 859 splx(s); 860 return 0; 861 862 case DIOCGDINFO: /* get disk label */ 863 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 864 return 0; 865 866 case DIOCGPART: /* get partition info */ 867 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 868 ((struct partinfo *) addr)->part = 869 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 870 return 0; 871 872 case DIOCSDINFO: /* set disk label */ 873 if ((flag & FWRITE) == 0) 874 return EBADF; 875 error = setdisklabel(xy->sc_dk.dk_label, 876 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 877 xy->sc_dk.dk_cpulabel); 878 if (error == 0) { 879 if (xy->state == XY_DRIVE_NOLABEL) 880 xy->state = XY_DRIVE_ONLINE; 881 } 882 return error; 883 884 case DIOCWLABEL: /* change write status of disk label */ 885 if ((flag & FWRITE) == 0) 886 return EBADF; 887 if (*(int *) addr) 888 xy->flags |= XY_WLABEL; 889 else 890 xy->flags &= ~XY_WLABEL; 891 return 0; 892 893 case DIOCWDINFO: /* write disk label */ 894 if ((flag & FWRITE) == 0) 895 return EBADF; 896 error = setdisklabel(xy->sc_dk.dk_label, 897 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 898 xy->sc_dk.dk_cpulabel); 899 if (error == 0) { 900 if (xy->state == XY_DRIVE_NOLABEL) 901 xy->state = XY_DRIVE_ONLINE; 902 903 /* Simulate opening partition 0 so write succeeds. */ 904 xy->sc_dk.dk_openmask |= (1 << 0); 905 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 906 xystrategy, xy->sc_dk.dk_label, 907 xy->sc_dk.dk_cpulabel); 908 xy->sc_dk.dk_openmask = 909 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 910 } 911 return error; 912 913 case DIOSXDCMD: 914 xio = (struct xd_iocmd *) addr; 915 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 916 return (error); 917 return (xyc_ioctlcmd(xy, dev, xio)); 918 919 default: 920 return ENOTTY; 921 } 922 } 923 924 /* 925 * xyopen: open drive 926 */ 927 928 int 929 xyopen(dev, flag, fmt, p) 930 dev_t dev; 931 int flag, fmt; 932 struct proc *p; 933 { 934 int unit, part; 935 struct xy_softc *xy; 936 struct xyc_attach_args xa; 937 938 /* first, could it be a valid target? */ 939 940 unit = DISKUNIT(dev); 941 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 942 return (ENXIO); 943 part = DISKPART(dev); 944 945 /* do we need to attach the drive? */ 946 947 if (xy->state == XY_DRIVE_UNKNOWN) { 948 xa.driveno = xy->xy_drive; 949 xa.fullmode = XY_SUB_WAIT; 950 xa.booting = 0; 951 xyattach((struct device *) xy->parent, 952 (struct device *) xy, &xa); 953 if (xy->state == XY_DRIVE_UNKNOWN) { 954 return (EIO); 955 } 956 } 957 /* check for partition */ 958 959 if (part != RAW_PART && 960 (part >= xy->sc_dk.dk_label->d_npartitions || 961 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 962 return (ENXIO); 963 } 964 /* set open masks */ 965 966 switch (fmt) { 967 case S_IFCHR: 968 xy->sc_dk.dk_copenmask |= (1 << part); 969 break; 970 case S_IFBLK: 971 xy->sc_dk.dk_bopenmask |= (1 << part); 972 break; 973 } 974 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 975 976 return 0; 977 } 978 979 int 980 xyread(dev, uio, flags) 981 dev_t dev; 982 struct uio *uio; 983 int flags; 984 { 985 986 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 987 } 988 989 int 990 xywrite(dev, uio, flags) 991 dev_t dev; 992 struct uio *uio; 993 int flags; 994 { 995 996 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 997 } 998 999 1000 /* 1001 * xysize: return size of a partition for a dump 1002 */ 1003 1004 int 1005 xysize(dev) 1006 dev_t dev; 1007 1008 { 1009 struct xy_softc *xysc; 1010 int unit, part, size, omask; 1011 1012 /* valid unit? */ 1013 unit = DISKUNIT(dev); 1014 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1015 return (-1); 1016 1017 part = DISKPART(dev); 1018 omask = xysc->sc_dk.dk_openmask & (1 << part); 1019 1020 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1021 return (-1); 1022 1023 /* do it */ 1024 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1025 size = -1; /* only give valid size for swap partitions */ 1026 else 1027 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1028 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1029 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1030 return (-1); 1031 return (size); 1032 } 1033 1034 /* 1035 * xystrategy: buffering system interface to xy. 1036 */ 1037 1038 void 1039 xystrategy(bp) 1040 struct buf *bp; 1041 1042 { 1043 struct xy_softc *xy; 1044 int s, unit; 1045 struct xyc_attach_args xa; 1046 1047 unit = DISKUNIT(bp->b_dev); 1048 1049 /* check for live device */ 1050 1051 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1052 bp->b_blkno < 0 || 1053 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1054 bp->b_error = EINVAL; 1055 goto bad; 1056 } 1057 /* do we need to attach the drive? */ 1058 1059 if (xy->state == XY_DRIVE_UNKNOWN) { 1060 xa.driveno = xy->xy_drive; 1061 xa.fullmode = XY_SUB_WAIT; 1062 xa.booting = 0; 1063 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1064 if (xy->state == XY_DRIVE_UNKNOWN) { 1065 bp->b_error = EIO; 1066 goto bad; 1067 } 1068 } 1069 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1070 /* no I/O to unlabeled disks, unless raw partition */ 1071 bp->b_error = EIO; 1072 goto bad; 1073 } 1074 /* short circuit zero length request */ 1075 1076 if (bp->b_bcount == 0) 1077 goto done; 1078 1079 /* check bounds with label (disksubr.c). Determine the size of the 1080 * transfer, and make sure it is within the boundaries of the 1081 * partition. Adjust transfer if needed, and signal errors or early 1082 * completion. */ 1083 1084 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1085 (xy->flags & XY_WLABEL) != 0) <= 0) 1086 goto done; 1087 1088 /* 1089 * now we know we have a valid buf structure that we need to do I/O 1090 * on. 1091 */ 1092 s = splbio(); /* protect the queues */ 1093 1094 disksort(&xy->xyq, bp); 1095 1096 /* start 'em up */ 1097 1098 xyc_start(xy->parent, NULL); 1099 1100 /* done! */ 1101 1102 splx(s); 1103 return; 1104 1105 bad: /* tells upper layers we have an error */ 1106 bp->b_flags |= B_ERROR; 1107 done: /* tells upper layers we are done with this 1108 * buf */ 1109 bp->b_resid = bp->b_bcount; 1110 biodone(bp); 1111 } 1112 /* 1113 * end of {b,c}devsw functions 1114 */ 1115 1116 /* 1117 * i n t e r r u p t f u n c t i o n 1118 * 1119 * xycintr: hardware interrupt. 1120 */ 1121 int 1122 xycintr(v) 1123 void *v; 1124 1125 { 1126 struct xyc_softc *xycsc = v; 1127 1128 /* kick the event counter */ 1129 1130 xycsc->sc_intrcnt.ev_count++; 1131 1132 /* remove as many done IOPBs as possible */ 1133 1134 xyc_remove_iorq(xycsc); 1135 1136 /* start any iorq's already waiting */ 1137 1138 xyc_start(xycsc, NULL); 1139 1140 return (1); 1141 } 1142 /* 1143 * end of interrupt function 1144 */ 1145 1146 /* 1147 * i n t e r n a l f u n c t i o n s 1148 */ 1149 1150 /* 1151 * xyc_rqinit: fill out the fields of an I/O request 1152 */ 1153 1154 inline void 1155 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1156 struct xy_iorq *rq; 1157 struct xyc_softc *xyc; 1158 struct xy_softc *xy; 1159 int md; 1160 u_long blk; 1161 int cnt; 1162 caddr_t db; 1163 struct buf *bp; 1164 { 1165 rq->xyc = xyc; 1166 rq->xy = xy; 1167 rq->ttl = XYC_MAXTTL + 10; 1168 rq->mode = md; 1169 rq->tries = rq->errno = rq->lasterror = 0; 1170 rq->blockno = blk; 1171 rq->sectcnt = cnt; 1172 rq->dbuf = db; 1173 rq->buf = bp; 1174 } 1175 1176 /* 1177 * xyc_rqtopb: load up an IOPB based on an iorq 1178 */ 1179 1180 void 1181 xyc_rqtopb(iorq, iopb, cmd, subfun) 1182 struct xy_iorq *iorq; 1183 struct xy_iopb *iopb; 1184 int cmd, subfun; 1185 1186 { 1187 u_long block, dp; 1188 1189 /* normal IOPB case, standard stuff */ 1190 1191 /* chain bit handled later */ 1192 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1193 iopb->com = cmd; 1194 iopb->errno = 0; 1195 iopb->errs = 0; 1196 iopb->done = 0; 1197 if (iorq->xy) { 1198 iopb->unit = iorq->xy->xy_drive; 1199 iopb->dt = iorq->xy->drive_type; 1200 } else { 1201 iopb->unit = 0; 1202 iopb->dt = 0; 1203 } 1204 block = iorq->blockno; 1205 if (iorq->xy == NULL || block == 0) { 1206 iopb->sect = iopb->head = iopb->cyl = 0; 1207 } else { 1208 iopb->sect = block % iorq->xy->nsect; 1209 block = block / iorq->xy->nsect; 1210 iopb->head = block % iorq->xy->nhead; 1211 block = block / iorq->xy->nhead; 1212 iopb->cyl = block; 1213 } 1214 iopb->scnt = iorq->sectcnt; 1215 dp = (u_long) iorq->dbuf; 1216 if (iorq->dbuf == NULL) { 1217 iopb->dataa = 0; 1218 iopb->datar = 0; 1219 } else { 1220 iopb->dataa = (dp & 0xffff); 1221 iopb->datar = ((dp & 0xff0000) >> 16); 1222 } 1223 iopb->subfn = subfun; 1224 } 1225 1226 1227 /* 1228 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1229 */ 1230 1231 int 1232 xyc_unbusy(xyc, del) 1233 1234 struct xyc *xyc; 1235 int del; 1236 1237 { 1238 while (del-- > 0) { 1239 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1240 break; 1241 DELAY(1); 1242 } 1243 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1244 } 1245 1246 /* 1247 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1248 * note that NORM requests are handled seperately. 1249 */ 1250 int 1251 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1252 struct xyc_softc *xycsc; 1253 int cmd, subfn, unit, block, scnt; 1254 char *dptr; 1255 int fullmode; 1256 1257 { 1258 int submode = XY_STATE(fullmode); 1259 struct xy_iorq *iorq = xycsc->ciorq; 1260 struct xy_iopb *iopb = xycsc->ciopb; 1261 1262 /* 1263 * is someone else using the control iopq wait for it if we can 1264 */ 1265 start: 1266 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1267 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1268 return(XY_ERR_FAIL); 1269 goto start; 1270 } 1271 1272 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1273 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1274 iorq->mode = XY_SUB_FREE; 1275 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1276 } 1277 1278 /* init iorq/iopb */ 1279 1280 xyc_rqinit(iorq, xycsc, 1281 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1282 fullmode, block, scnt, dptr, NULL); 1283 1284 /* load IOPB from iorq */ 1285 1286 xyc_rqtopb(iorq, iopb, cmd, subfn); 1287 1288 /* submit it for processing */ 1289 1290 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1291 1292 return(XY_ERR_AOK); 1293 } 1294 1295 /* 1296 * xyc_startbuf 1297 * start a buffer for running 1298 */ 1299 1300 int 1301 xyc_startbuf(xycsc, xysc, bp) 1302 struct xyc_softc *xycsc; 1303 struct xy_softc *xysc; 1304 struct buf *bp; 1305 1306 { 1307 int partno, error; 1308 struct xy_iorq *iorq; 1309 struct xy_iopb *iopb; 1310 u_long block; 1311 1312 iorq = xysc->xyrq; 1313 iopb = iorq->iopb; 1314 1315 /* get buf */ 1316 1317 if (bp == NULL) 1318 panic("xyc_startbuf null buf"); 1319 1320 partno = DISKPART(bp->b_dev); 1321 #ifdef XYC_DEBUG 1322 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1323 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1324 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1325 bp->b_bcount, bp->b_data); 1326 #endif 1327 1328 /* 1329 * load request. we have to calculate the correct block number based 1330 * on partition info. 1331 * 1332 * note that iorq points to the buffer as mapped into DVMA space, 1333 * where as the bp->b_data points to its non-DVMA mapping. 1334 */ 1335 1336 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1337 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1338 1339 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1340 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1341 if (error) { 1342 printf("%s: warning: cannot load DMA map\n", 1343 xycsc->sc_dev.dv_xname); 1344 return (XY_ERR_FAIL); /* XXX: need some sort of 1345 * call-back scheme here? */ 1346 } 1347 1348 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1349 (bp->b_flags & B_READ) 1350 ? BUS_DMASYNC_PREREAD 1351 : BUS_DMASYNC_PREWRITE); 1352 1353 /* init iorq and load iopb from it */ 1354 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1355 bp->b_bcount / XYFM_BPS, 1356 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1357 bp); 1358 1359 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1360 1361 /* Instrumentation. */ 1362 disk_busy(&xysc->sc_dk); 1363 1364 return (XY_ERR_AOK); 1365 } 1366 1367 1368 /* 1369 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1370 * if ok. if it fail returns an error code. type is XY_SUB_*. 1371 * 1372 * note: caller frees iorq in all cases except NORM 1373 * 1374 * return value: 1375 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1376 * WAIT: XY_AOK (success), <error-code> (failed) 1377 * POLL: <same as WAIT> 1378 * NOQ : <same as NORM> 1379 * 1380 * there are three sources for i/o requests: 1381 * [1] xystrategy: normal block I/O, using "struct buf" system. 1382 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1383 * [3] open/ioctl: these are I/O requests done in the context of a process, 1384 * and the process should block until they are done. 1385 * 1386 * software state is stored in the iorq structure. each iorq has an 1387 * iopb structure. the hardware understands the iopb structure. 1388 * every command must go through an iopb. a 450 handles one iopb at a 1389 * time, where as a 451 can take them in chains. [the 450 claims it 1390 * can handle chains, but is appears to be buggy...] iopb are allocated 1391 * in DVMA space at boot up time. each disk gets one iopb, and the 1392 * controller gets one (for POLL and WAIT commands). what happens if 1393 * the iopb is busy? for i/o type [1], the buffers are queued at the 1394 * "buff" layer and * picked up later by the interrupt routine. for case 1395 * [2] we can only be blocked if there is a WAIT type I/O request being 1396 * run. since this can only happen when we are crashing, we wait a sec 1397 * and then steal the IOPB. for case [3] the process can sleep 1398 * on the iorq free list until some iopbs are avaliable. 1399 */ 1400 1401 1402 int 1403 xyc_submit_iorq(xycsc, iorq, type) 1404 struct xyc_softc *xycsc; 1405 struct xy_iorq *iorq; 1406 int type; 1407 1408 { 1409 struct xy_iopb *iopb; 1410 u_long iopbaddr; 1411 1412 #ifdef XYC_DEBUG 1413 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1414 xycsc->sc_dev.dv_xname, iorq, type); 1415 #endif 1416 1417 /* first check and see if controller is busy */ 1418 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1419 #ifdef XYC_DEBUG 1420 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1421 #endif 1422 if (type == XY_SUB_NOQ) 1423 return (XY_ERR_FAIL); /* failed */ 1424 switch (type) { 1425 case XY_SUB_NORM: 1426 return XY_ERR_AOK; /* success */ 1427 case XY_SUB_WAIT: 1428 while (iorq->iopb->done == 0) { 1429 sleep(iorq, PRIBIO); 1430 } 1431 return (iorq->errno); 1432 case XY_SUB_POLL: /* steal controller */ 1433 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1434 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1435 panic("xyc_submit_iorq: stuck xyc"); 1436 printf("%s: stole controller\n", 1437 xycsc->sc_dev.dv_xname); 1438 break; 1439 default: 1440 panic("xyc_submit_iorq adding"); 1441 } 1442 } 1443 1444 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1445 if (iopb == NULL) { /* nothing doing? */ 1446 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1447 return(XY_ERR_AOK); 1448 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1449 } 1450 iopbaddr = (u_long) iopb - DVMA_BASE; 1451 1452 XYC_GO(xycsc->xyc, iopbaddr); 1453 1454 /* command now running, wrap it up */ 1455 switch (type) { 1456 case XY_SUB_NORM: 1457 case XY_SUB_NOQ: 1458 return (XY_ERR_AOK); /* success */ 1459 case XY_SUB_WAIT: 1460 while (iorq->iopb->done == 0) { 1461 sleep(iorq, PRIBIO); 1462 } 1463 return (iorq->errno); 1464 case XY_SUB_POLL: 1465 return (xyc_piodriver(xycsc, iorq)); 1466 default: 1467 panic("xyc_submit_iorq wrap up"); 1468 } 1469 panic("xyc_submit_iorq"); 1470 return 0; /* not reached */ 1471 } 1472 1473 1474 /* 1475 * xyc_chain: build a chain. return dvma address of first element in 1476 * the chain. iorq != NULL: means we only want that item on the chain. 1477 */ 1478 1479 struct xy_iopb * 1480 xyc_chain(xycsc, iorq) 1481 1482 struct xyc_softc *xycsc; 1483 struct xy_iorq *iorq; 1484 1485 { 1486 int togo, chain, hand; 1487 struct xy_iopb *iopb, *prev_iopb; 1488 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1489 1490 /* 1491 * promote control IOPB to the top 1492 */ 1493 if (iorq == NULL) { 1494 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1495 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1496 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1497 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1498 } 1499 /* 1500 * special case: if iorq != NULL then we have a POLL or WAIT request. 1501 * we let these take priority and do them first. 1502 */ 1503 if (iorq) { 1504 xycsc->xy_chain[0] = iorq; 1505 iorq->iopb->chen = 0; 1506 return(iorq->iopb); 1507 } 1508 1509 /* 1510 * NORM case: do round robin and maybe chain (if allowed and possible) 1511 */ 1512 1513 chain = 0; 1514 hand = xycsc->xy_hand; 1515 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1516 1517 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1518 1519 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1520 xycsc->iopbase[hand].done) 1521 continue; /* not ready-for-i/o */ 1522 1523 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1524 iopb = xycsc->xy_chain[chain]->iopb; 1525 iopb->chen = 0; 1526 if (chain != 0) { /* adding a link to a chain? */ 1527 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1528 prev_iopb->chen = 1; 1529 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1530 } else { /* head of chain */ 1531 iorq = xycsc->xy_chain[chain]; 1532 } 1533 chain++; 1534 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1535 } 1536 return(iorq ? iorq->iopb : NULL); 1537 } 1538 1539 /* 1540 * xyc_piodriver 1541 * 1542 * programmed i/o driver. this function takes over the computer 1543 * and drains off the polled i/o request. it returns the status of the iorq 1544 * the caller is interesting in. 1545 */ 1546 int 1547 xyc_piodriver(xycsc, iorq) 1548 struct xyc_softc *xycsc; 1549 struct xy_iorq *iorq; 1550 1551 { 1552 int nreset = 0; 1553 int retval = 0; 1554 u_long res; 1555 #ifdef XYC_DEBUG 1556 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1557 #endif 1558 1559 while (iorq->iopb->done == 0) { 1560 1561 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1562 1563 /* we expect some progress soon */ 1564 if (res == XY_ERR_FAIL && nreset >= 2) { 1565 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1566 #ifdef XYC_DEBUG 1567 printf("xyc_piodriver: timeout\n"); 1568 #endif 1569 return (XY_ERR_FAIL); 1570 } 1571 if (res == XY_ERR_FAIL) { 1572 if (xyc_reset(xycsc, 0, 1573 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1574 XY_ERR_FAIL, 1575 0) == XY_ERR_FAIL) 1576 return (XY_ERR_FAIL); /* flushes all but POLL 1577 * requests, resets */ 1578 continue; 1579 } 1580 1581 xyc_remove_iorq(xycsc); /* may resubmit request */ 1582 1583 if (iorq->iopb->done == 0) 1584 xyc_start(xycsc, iorq); 1585 } 1586 1587 /* get return value */ 1588 1589 retval = iorq->errno; 1590 1591 #ifdef XYC_DEBUG 1592 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1593 iorq->errno, xyc_e2str(iorq->errno)); 1594 #endif 1595 1596 /* start up any bufs that have queued */ 1597 1598 xyc_start(xycsc, NULL); 1599 1600 return (retval); 1601 } 1602 1603 /* 1604 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1605 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1606 */ 1607 void 1608 xyc_xyreset(xycsc, xysc) 1609 struct xyc_softc *xycsc; 1610 struct xy_softc *xysc; 1611 1612 { 1613 struct xy_iopb tmpiopb; 1614 u_long addr; 1615 int del; 1616 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1617 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1618 xycsc->ciopb->ien = 0; 1619 xycsc->ciopb->com = XYCMD_RST; 1620 xycsc->ciopb->unit = xysc->xy_drive; 1621 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1622 1623 XYC_GO(xycsc->xyc, addr); 1624 1625 del = XYC_RESETUSEC; 1626 while (del > 0) { 1627 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1628 DELAY(1); 1629 del--; 1630 } 1631 1632 if (del <= 0 || xycsc->ciopb->errs) { 1633 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1634 xyc_e2str(xycsc->ciopb->errno)); 1635 del = xycsc->xyc->xyc_rsetup; 1636 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1637 panic("xyc_reset"); 1638 } else { 1639 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1640 } 1641 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1642 } 1643 1644 1645 /* 1646 * xyc_reset: reset everything: requests are marked as errors except 1647 * a polled request (which is resubmitted) 1648 */ 1649 int 1650 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1651 struct xyc_softc *xycsc; 1652 int quiet, error; 1653 struct xy_iorq *blastmode; 1654 struct xy_softc *xysc; 1655 1656 { 1657 int del = 0, lcv, retval = XY_ERR_AOK; 1658 1659 /* soft reset hardware */ 1660 1661 if (!quiet) 1662 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1663 del = xycsc->xyc->xyc_rsetup; 1664 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1665 if (del == XY_ERR_FAIL) { 1666 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1667 retval = XY_ERR_FAIL; 1668 } 1669 if (xysc) 1670 xyc_xyreset(xycsc, xysc); 1671 1672 /* fix queues based on "blast-mode" */ 1673 1674 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1675 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1676 1677 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1678 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1679 XY_STATE(iorq->mode) != XY_SUB_NORM) 1680 /* is it active? */ 1681 continue; 1682 1683 if (blastmode == XY_RSET_ALL || 1684 blastmode != iorq) { 1685 /* failed */ 1686 iorq->errno = error; 1687 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1688 switch (XY_STATE(iorq->mode)) { 1689 case XY_SUB_NORM: 1690 iorq->buf->b_error = EIO; 1691 iorq->buf->b_flags |= B_ERROR; 1692 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1693 1694 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1695 (iorq->buf->b_flags & B_READ) 1696 ? BUS_DMASYNC_POSTREAD 1697 : BUS_DMASYNC_POSTWRITE); 1698 1699 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1700 1701 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1702 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1703 (xycsc->reqs[lcv].buf->b_bcount - 1704 xycsc->reqs[lcv].buf->b_resid)); 1705 biodone(iorq->buf); 1706 iorq->mode = XY_SUB_FREE; 1707 break; 1708 case XY_SUB_WAIT: 1709 wakeup(iorq); 1710 case XY_SUB_POLL: 1711 iorq->mode = 1712 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1713 break; 1714 } 1715 1716 } else { 1717 1718 /* resubmit, no need to do anything here */ 1719 } 1720 } 1721 1722 /* 1723 * now, if stuff is waiting, start it. 1724 * since we just reset it should go 1725 */ 1726 xyc_start(xycsc, NULL); 1727 1728 return (retval); 1729 } 1730 1731 /* 1732 * xyc_start: start waiting buffers 1733 */ 1734 1735 void 1736 xyc_start(xycsc, iorq) 1737 struct xyc_softc *xycsc; 1738 struct xy_iorq *iorq; 1739 1740 { 1741 int lcv; 1742 struct xy_softc *xy; 1743 1744 if (iorq == NULL) { 1745 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1746 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1747 if (xy->xyq.b_actf == NULL) continue; 1748 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1749 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1750 } 1751 } 1752 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1753 } 1754 1755 /* 1756 * xyc_remove_iorq: remove "done" IOPB's. 1757 */ 1758 1759 int 1760 xyc_remove_iorq(xycsc) 1761 struct xyc_softc *xycsc; 1762 1763 { 1764 int errno, rq, comm, errs; 1765 struct xyc *xyc = xycsc->xyc; 1766 u_long addr; 1767 struct xy_iopb *iopb; 1768 struct xy_iorq *iorq; 1769 struct buf *bp; 1770 1771 if (xyc->xyc_csr & XYC_DERR) { 1772 /* 1773 * DOUBLE ERROR: should never happen under normal use. This 1774 * error is so bad, you can't even tell which IOPB is bad, so 1775 * we dump them all. 1776 */ 1777 errno = XY_ERR_DERR; 1778 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1779 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1780 printf("%s: soft reset failed!\n", 1781 xycsc->sc_dev.dv_xname); 1782 panic("xyc_remove_iorq: controller DEAD"); 1783 } 1784 return (XY_ERR_AOK); 1785 } 1786 1787 /* 1788 * get iopb that is done, loop down the chain 1789 */ 1790 1791 if (xyc->xyc_csr & XYC_ERR) { 1792 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1793 } 1794 if (xyc->xyc_csr & XYC_IPND) { 1795 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1796 } 1797 1798 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1799 iorq = xycsc->xy_chain[rq]; 1800 if (iorq == NULL) break; /* done ! */ 1801 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1802 continue; /* free, or done */ 1803 iopb = iorq->iopb; 1804 if (iopb->done == 0) 1805 continue; /* not done yet */ 1806 1807 comm = iopb->com; 1808 errs = iopb->errs; 1809 1810 if (errs) 1811 iorq->errno = iopb->errno; 1812 else 1813 iorq->errno = 0; 1814 1815 /* handle non-fatal errors */ 1816 1817 if (errs && 1818 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1819 continue; /* AOK: we resubmitted it */ 1820 1821 1822 /* this iorq is now done (hasn't been restarted or anything) */ 1823 1824 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1825 xyc_perror(iorq, iopb, 0); 1826 1827 /* now, if read/write check to make sure we got all the data 1828 * we needed. (this may not be the case if we got an error in 1829 * the middle of a multisector request). */ 1830 1831 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1832 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1833 /* we just successfully processed a bad144 sector 1834 * note: if we are in bad 144 mode, the pointers have 1835 * been advanced already (see above) and are pointing 1836 * at the bad144 sector. to exit bad144 mode, we 1837 * must advance the pointers 1 sector and issue a new 1838 * request if there are still sectors left to process 1839 * 1840 */ 1841 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1842 1843 /* exit b144 mode */ 1844 iorq->mode = iorq->mode & (~XY_MODE_B144); 1845 1846 if (iorq->sectcnt) { /* more to go! */ 1847 iorq->lasterror = iorq->errno = iopb->errno = 0; 1848 iopb->errs = iopb->done = 0; 1849 iorq->tries = 0; 1850 iopb->scnt = iorq->sectcnt; 1851 iopb->cyl = iorq->blockno / 1852 iorq->xy->sectpercyl; 1853 iopb->head = 1854 (iorq->blockno / iorq->xy->nhead) % 1855 iorq->xy->nhead; 1856 iopb->sect = iorq->blockno % XYFM_BPS; 1857 addr = (u_long) iorq->dbuf; 1858 iopb->dataa = (addr & 0xffff); 1859 iopb->datar = ((addr & 0xff0000) >> 16); 1860 /* will resubit at end */ 1861 continue; 1862 } 1863 } 1864 /* final cleanup, totally done with this request */ 1865 1866 switch (XY_STATE(iorq->mode)) { 1867 case XY_SUB_NORM: 1868 bp = iorq->buf; 1869 if (errs) { 1870 bp->b_error = EIO; 1871 bp->b_flags |= B_ERROR; 1872 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1873 } else { 1874 bp->b_resid = 0; /* done */ 1875 } 1876 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1877 (iorq->buf->b_flags & B_READ) 1878 ? BUS_DMASYNC_POSTREAD 1879 : BUS_DMASYNC_POSTWRITE); 1880 1881 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1882 1883 iorq->xy->xyq.b_actf = bp->b_actf; 1884 disk_unbusy(&iorq->xy->sc_dk, 1885 (bp->b_bcount - bp->b_resid)); 1886 iorq->mode = XY_SUB_FREE; 1887 biodone(bp); 1888 break; 1889 case XY_SUB_WAIT: 1890 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1891 wakeup(iorq); 1892 break; 1893 case XY_SUB_POLL: 1894 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1895 break; 1896 } 1897 } 1898 1899 return (XY_ERR_AOK); 1900 } 1901 1902 /* 1903 * xyc_perror: print error. 1904 * - if still_trying is true: we got an error, retried and got a 1905 * different error. in that case lasterror is the old error, 1906 * and errno is the new one. 1907 * - if still_trying is not true, then if we ever had an error it 1908 * is in lasterror. also, if iorq->errno == 0, then we recovered 1909 * from that error (otherwise iorq->errno == iorq->lasterror). 1910 */ 1911 void 1912 xyc_perror(iorq, iopb, still_trying) 1913 struct xy_iorq *iorq; 1914 struct xy_iopb *iopb; 1915 int still_trying; 1916 1917 { 1918 1919 int error = iorq->lasterror; 1920 1921 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1922 : iorq->xyc->sc_dev.dv_xname); 1923 if (iorq->buf) 1924 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1925 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1926 printf("%s %d/%d/%d: ", 1927 (iopb->com == XYCMD_RD) ? "read" : "write", 1928 iopb->cyl, iopb->head, iopb->sect); 1929 printf("%s", xyc_e2str(error)); 1930 1931 if (still_trying) 1932 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1933 else 1934 if (iorq->errno == 0) 1935 printf(" [recovered in %d tries]", iorq->tries); 1936 1937 printf("\n"); 1938 } 1939 1940 /* 1941 * xyc_error: non-fatal error encountered... recover. 1942 * return AOK if resubmitted, return FAIL if this iopb is done 1943 */ 1944 int 1945 xyc_error(xycsc, iorq, iopb, comm) 1946 struct xyc_softc *xycsc; 1947 struct xy_iorq *iorq; 1948 struct xy_iopb *iopb; 1949 int comm; 1950 1951 { 1952 int errno = iorq->errno; 1953 int erract = xyc_entoact(errno); 1954 int oldmode, advance, i; 1955 1956 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1957 oldmode = iorq->mode; 1958 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1959 /* make xyc_start ignore us */ 1960 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1961 iorq->mode = oldmode; 1962 } 1963 /* check for read/write to a sector in bad144 table if bad: redirect 1964 * request to bad144 area */ 1965 1966 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1967 (iorq->mode & XY_MODE_B144) == 0) { 1968 advance = iorq->sectcnt - iopb->scnt; 1969 XYC_ADVANCE(iorq, advance); 1970 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1971 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1972 iorq->blockno % iorq->xy->nsect)) != -1) { 1973 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1974 * redirect */ 1975 iopb->errno = iopb->done = iopb->errs = 0; 1976 iopb->scnt = 1; 1977 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1978 /* second to last acyl */ 1979 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1980 * standard */ 1981 iopb->head = i / iorq->xy->nhead; 1982 iopb->sect = i % iorq->xy->nhead; 1983 /* will resubmit when we come out of remove_iorq */ 1984 return (XY_ERR_AOK); /* recovered! */ 1985 } 1986 } 1987 1988 /* 1989 * it isn't a bad144 sector, must be real error! see if we can retry 1990 * it? 1991 */ 1992 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1993 xyc_perror(iorq, iopb, 1); /* inform of error state 1994 * change */ 1995 iorq->lasterror = errno; 1996 1997 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1998 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1999 iorq->tries++; 2000 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2001 /* will resubmit at end of remove_iorq */ 2002 return (XY_ERR_AOK); /* recovered! */ 2003 } 2004 2005 /* failed to recover from this error */ 2006 return (XY_ERR_FAIL); 2007 } 2008 2009 /* 2010 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2011 */ 2012 void 2013 xyc_tick(arg) 2014 void *arg; 2015 2016 { 2017 struct xyc_softc *xycsc = arg; 2018 int lcv, s, reset = 0; 2019 2020 /* reduce ttl for each request if one goes to zero, reset xyc */ 2021 s = splbio(); 2022 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2023 if (xycsc->reqs[lcv].mode == 0 || 2024 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2025 continue; 2026 xycsc->reqs[lcv].ttl--; 2027 if (xycsc->reqs[lcv].ttl == 0) 2028 reset = 1; 2029 } 2030 if (reset) { 2031 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2032 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2033 } 2034 splx(s); 2035 2036 /* until next time */ 2037 2038 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2039 } 2040 2041 /* 2042 * xyc_ioctlcmd: this function provides a user level interface to the 2043 * controller via ioctl. this allows "format" programs to be written 2044 * in user code, and is also useful for some debugging. we return 2045 * an error code. called at user priority. 2046 * 2047 * XXX missing a few commands (see the 7053 driver for ideas) 2048 */ 2049 int 2050 xyc_ioctlcmd(xy, dev, xio) 2051 struct xy_softc *xy; 2052 dev_t dev; 2053 struct xd_iocmd *xio; 2054 2055 { 2056 int s, rqno, dummy = 0; 2057 caddr_t dvmabuf = NULL, buf = NULL; 2058 struct xyc_softc *xycsc; 2059 int rseg, error; 2060 bus_dma_segment_t seg; 2061 2062 /* check sanity of requested command */ 2063 2064 switch (xio->cmd) { 2065 2066 case XYCMD_NOP: /* no op: everything should be zero */ 2067 if (xio->subfn || xio->dptr || xio->dlen || 2068 xio->block || xio->sectcnt) 2069 return (EINVAL); 2070 break; 2071 2072 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2073 case XYCMD_WR: 2074 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2075 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2076 return (EINVAL); 2077 break; 2078 2079 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2080 return (EINVAL); 2081 2082 break; 2083 2084 default: 2085 return (EINVAL);/* ??? */ 2086 } 2087 2088 xycsc = xy->parent; 2089 2090 /* create DVMA buffer for request if needed */ 2091 if (xio->dlen) { 2092 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2093 &seg, 1, &rseg, BUS_DMA_WAITOK); 2094 if (error) { 2095 return (error); 2096 } 2097 dvmabuf = (caddr_t)seg.ds_addr; 2098 2099 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2100 &buf, 2101 BUS_DMA_WAITOK|BUS_DMAMEM_NOSYNC); 2102 if (error) { 2103 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2104 return (error); 2105 } 2106 if (xio->cmd == XYCMD_WR) { 2107 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2108 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2109 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2110 return (error); 2111 } 2112 } 2113 } 2114 /* do it! */ 2115 2116 error = 0; 2117 s = splbio(); 2118 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2119 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2120 if (rqno == XY_ERR_FAIL) { 2121 error = EIO; 2122 goto done; 2123 } 2124 xio->errno = xycsc->ciorq->errno; 2125 xio->tries = xycsc->ciorq->tries; 2126 XYC_DONE(xycsc, dummy); 2127 2128 if (xio->cmd == XYCMD_RD) 2129 error = copyout(buf, xio->dptr, xio->dlen); 2130 2131 done: 2132 splx(s); 2133 if (dvmabuf) { 2134 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2135 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2136 } 2137 return (error); 2138 } 2139 2140 /* 2141 * xyc_e2str: convert error code number into an error string 2142 */ 2143 char * 2144 xyc_e2str(no) 2145 int no; 2146 { 2147 switch (no) { 2148 case XY_ERR_FAIL: 2149 return ("Software fatal error"); 2150 case XY_ERR_DERR: 2151 return ("DOUBLE ERROR"); 2152 case XY_ERR_AOK: 2153 return ("Successful completion"); 2154 case XY_ERR_IPEN: 2155 return("Interrupt pending"); 2156 case XY_ERR_BCFL: 2157 return("Busy conflict"); 2158 case XY_ERR_TIMO: 2159 return("Operation timeout"); 2160 case XY_ERR_NHDR: 2161 return("Header not found"); 2162 case XY_ERR_HARD: 2163 return("Hard ECC error"); 2164 case XY_ERR_ICYL: 2165 return("Illegal cylinder address"); 2166 case XY_ERR_ISEC: 2167 return("Illegal sector address"); 2168 case XY_ERR_SMAL: 2169 return("Last sector too small"); 2170 case XY_ERR_SACK: 2171 return("Slave ACK error (non-existent memory)"); 2172 case XY_ERR_CHER: 2173 return("Cylinder and head/header error"); 2174 case XY_ERR_SRTR: 2175 return("Auto-seek retry successful"); 2176 case XY_ERR_WPRO: 2177 return("Write-protect error"); 2178 case XY_ERR_UIMP: 2179 return("Unimplemented command"); 2180 case XY_ERR_DNRY: 2181 return("Drive not ready"); 2182 case XY_ERR_SZER: 2183 return("Sector count zero"); 2184 case XY_ERR_DFLT: 2185 return("Drive faulted"); 2186 case XY_ERR_ISSZ: 2187 return("Illegal sector size"); 2188 case XY_ERR_SLTA: 2189 return("Self test A"); 2190 case XY_ERR_SLTB: 2191 return("Self test B"); 2192 case XY_ERR_SLTC: 2193 return("Self test C"); 2194 case XY_ERR_SOFT: 2195 return("Soft ECC error"); 2196 case XY_ERR_SFOK: 2197 return("Soft ECC error recovered"); 2198 case XY_ERR_IHED: 2199 return("Illegal head"); 2200 case XY_ERR_DSEQ: 2201 return("Disk sequencer error"); 2202 case XY_ERR_SEEK: 2203 return("Seek error"); 2204 default: 2205 return ("Unknown error"); 2206 } 2207 } 2208 2209 int 2210 xyc_entoact(errno) 2211 2212 int errno; 2213 2214 { 2215 switch (errno) { 2216 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2217 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2218 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2219 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2220 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2221 2222 return(XY_ERA_PROG); /* program error ! */ 2223 2224 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2225 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2226 case XY_ERR_SOFT: 2227 2228 return(XY_ERA_HARD); /* hard error, retry */ 2229 2230 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2231 2232 return(XY_ERA_RSET); /* hard error reset */ 2233 2234 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2235 2236 return(XY_ERA_SOFT); /* an FYI error */ 2237 2238 case XY_ERR_WPRO: 2239 2240 return(XY_ERA_WPRO); /* write protect */ 2241 } 2242 2243 return(XY_ERA_PROG); /* ??? */ 2244 } 2245
Indexes created Tue Sep 30 11:09:46 GMT 2025