xy.c revision 1.14
1 /* $NetBSD: xy.c,v 1.14 1999/07/28 10:03:02 drochner 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 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #undef XYC_DEBUG /* full debug */ 54 #undef XYC_DIAG /* extra sanity checks */ 55 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 56 #define XYC_DIAG /* link in with master DIAG option */ 57 #endif 58 59 #include <sys/param.h> 60 #include <sys/proc.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/file.h> 64 #include <sys/stat.h> 65 #include <sys/ioctl.h> 66 #include <sys/buf.h> 67 #include <sys/uio.h> 68 #include <sys/malloc.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/syslog.h> 73 #include <sys/dkbad.h> 74 #include <sys/conf.h> 75 76 #include <vm/vm.h> 77 #include <vm/vm_kern.h> 78 79 #include <machine/bus.h> 80 #include <machine/intr.h> 81 82 #if defined(__sparc__) || defined(__sun3__) 83 #include <dev/sun/disklabel.h> 84 #endif 85 86 #include <dev/vme/vmevar.h> 87 88 #include <dev/vme/xyreg.h> 89 #include <dev/vme/xyvar.h> 90 #include <dev/vme/xio.h> 91 92 #include "locators.h" 93 94 /* 95 * macros 96 */ 97 98 /* 99 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 100 */ 101 #define XYC_GO(XYC, ADDR) { \ 102 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 107 (ADDR) = ((ADDR) >> 8); \ 108 (XYC)->xyc_reloc_hi = (ADDR); \ 109 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 110 } 111 112 /* 113 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 114 */ 115 116 #define XYC_DONE(SC,ER) { \ 117 if ((ER) == XY_ERR_AOK) { \ 118 (ER) = (SC)->ciorq->errno; \ 119 (SC)->ciorq->mode = XY_SUB_FREE; \ 120 wakeup((SC)->ciorq); \ 121 } \ 122 } 123 124 /* 125 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 126 */ 127 128 #define XYC_ADVANCE(IORQ, N) { \ 129 if (N) { \ 130 (IORQ)->sectcnt -= (N); \ 131 (IORQ)->blockno += (N); \ 132 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 133 } \ 134 } 135 136 /* 137 * note - addresses you can sleep on: 138 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 139 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 140 */ 141 142 143 /* 144 * function prototypes 145 * "xyc_*" functions are internal, all others are external interfaces 146 */ 147 148 extern int pil_to_vme[]; /* from obio.c */ 149 150 /* internals */ 151 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 152 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 153 char *xyc_e2str __P((int)); 154 int xyc_entoact __P((int)); 155 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 156 struct xy_iopb *, int)); 157 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 158 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 159 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 160 int xyc_remove_iorq __P((struct xyc_softc *)); 161 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 162 struct xy_softc *)); 163 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 164 struct xy_softc *, int, u_long, int, 165 caddr_t, struct buf *)); 166 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 167 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 168 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 169 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 170 void xyc_tick __P((void *)); 171 int xyc_unbusy __P((struct xyc *, int)); 172 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 173 174 /* machine interrupt hook */ 175 int xycintr __P((void *)); 176 177 /* autoconf */ 178 int xycmatch __P((struct device *, struct cfdata *, void *)); 179 void xycattach __P((struct device *, struct device *, void *)); 180 int xymatch __P((struct device *, struct cfdata *, void *)); 181 void xyattach __P((struct device *, struct device *, void *)); 182 static int xyc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 183 184 static void xydummystrat __P((struct buf *)); 185 int xygetdisklabel __P((struct xy_softc *, void *)); 186 187 bdev_decl(xy); 188 cdev_decl(xy); 189 190 /* 191 * cfattach's: device driver interface to autoconfig 192 */ 193 194 struct cfattach xyc_ca = { 195 sizeof(struct xyc_softc), xycmatch, xycattach 196 }; 197 198 struct cfattach xy_ca = { 199 sizeof(struct xy_softc), xymatch, xyattach 200 }; 201 202 extern struct cfdriver xy_cd; 203 204 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 205 int driveno; /* unit number */ 206 int fullmode; /* submit mode */ 207 int booting; /* are we booting or not? */ 208 }; 209 210 /* 211 * dkdriver 212 */ 213 214 struct dkdriver xydkdriver = { xystrategy }; 215 216 /* 217 * start: disk label fix code (XXX) 218 */ 219 220 static void *xy_labeldata; 221 222 static void 223 xydummystrat(bp) 224 struct buf *bp; 225 { 226 if (bp->b_bcount != XYFM_BPS) 227 panic("xydummystrat"); 228 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 229 bp->b_flags |= B_DONE; 230 bp->b_flags &= ~B_BUSY; 231 } 232 233 int 234 xygetdisklabel(xy, b) 235 struct xy_softc *xy; 236 void *b; 237 { 238 char *err; 239 #if defined(__sparc__) || defined(__sun3__) 240 struct sun_disklabel *sdl; 241 #endif 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 #if defined(__sparc__) || defined(__sun3__) 258 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 259 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 260 if (sdl->sl_magic == SUN_DKMAGIC) { 261 xy->pcyl = sdl->sl_pcylinders; 262 } else 263 #endif 264 { 265 printf("%s: WARNING: no `pcyl' in disk label.\n", 266 xy->sc_dev.dv_xname); 267 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 268 xy->sc_dk.dk_label->d_acylinders; 269 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 270 xy->sc_dev.dv_xname, xy->pcyl); 271 } 272 273 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 274 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 275 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 276 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 277 xy->sectpercyl = xy->nhead * xy->nsect; 278 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 279 * sun->bsd */ 280 return(XY_ERR_AOK); 281 } 282 283 /* 284 * end: disk label fix code (XXX) 285 */ 286 287 /* 288 * a u t o c o n f i g f u n c t i o n s 289 */ 290 291 /* 292 * xycmatch: determine if xyc is present or not. we do a 293 * soft reset to detect the xyc. 294 */ 295 int 296 xyc_probe(arg, tag, handle) 297 void *arg; 298 bus_space_tag_t tag; 299 bus_space_handle_t handle; 300 { 301 struct xyc *xyc = (void *)handle; /* XXX */ 302 303 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 304 } 305 306 int xycmatch(parent, cf, aux) 307 struct device *parent; 308 struct cfdata *cf; 309 void *aux; 310 { 311 struct vme_attach_args *va = aux; 312 vme_chipset_tag_t ct = va->va_vct; 313 vme_am_t mod; 314 int error; 315 316 mod = 0x2d; /* VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 317 if (vme_space_alloc(va->va_vct, va->r[0].offset, sizeof(struct xyc), 318 mod)) 319 return (0); 320 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 321 mod, VME_D32, xyc_probe, 0); 322 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 323 324 return (error == 0); 325 } 326 327 /* 328 * xycattach: attach controller 329 */ 330 void 331 xycattach(parent, self, aux) 332 struct device *parent, *self; 333 void *aux; 334 335 { 336 struct vme_attach_args *va = aux; 337 vme_chipset_tag_t ct = va->va_vct; 338 bus_space_tag_t bt; 339 bus_space_handle_t bh; 340 vme_intr_handle_t ih; 341 vme_am_t mod; 342 struct xyc_softc *xyc = (void *) self; 343 struct xyc_attach_args xa; 344 int lcv, res, pbsz, error; 345 bus_dma_segment_t seg; 346 int rseg; 347 vme_mapresc_t resc; 348 349 /* get addressing and intr level stuff from autoconfig and load it 350 * into our xyc_softc. */ 351 352 mod = 0x2d; /* VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 353 354 if (vme_space_alloc(va->va_vct, va->r[0].offset, sizeof(struct xyc), 355 mod)) 356 panic("xyc: vme alloc"); 357 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 358 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 359 panic("xyc: vme_map"); 360 361 xyc->xyc = (struct xyc *) bh; /* XXX */ 362 xyc->ipl = va->ilevel; 363 xyc->vector = va->ivector; 364 xyc->no_ols = 0; /* XXX should be from config */ 365 366 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 367 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 368 369 /* 370 * allocate and zero buffers 371 * check boundaries of the KVA's ... all IOPBs must reside in 372 * the same 64K region. 373 */ 374 375 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 376 377 error = bus_dmamem_alloc( 378 xyc->dmatag, 379 pbsz, /* size */ 380 64*1024, /* boundary */ 381 0, /* alignment */ 382 &seg, 383 1, /* # of segments */ 384 &rseg, /* actual # of segments */ 385 BUS_DMA_NOWAIT); 386 if (error) { 387 printf("%s: DMA buffer map error %d\n", 388 xyc->sc_dev.dv_xname, error); 389 return; 390 } 391 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 392 393 error = bus_dmamem_map( 394 xyc->dmatag, 395 &seg, 396 rseg, 397 XYC_MAXIOPB * sizeof(struct xy_iopb), 398 (caddr_t *)&xyc->iopbase, 399 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 400 if (error) { 401 bus_dmamem_free(xyc->dmatag, &seg, rseg); 402 printf("%s: DMA buffer map error %d\n", 403 xyc->sc_dev.dv_xname, error); 404 return; 405 } 406 bzero(xyc->iopbase, pbsz); 407 408 xyc->reqs = (struct xy_iorq *) 409 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 410 if (xyc->reqs == NULL) 411 panic("xyc malloc"); 412 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 413 414 /* 415 * init iorq to iopb pointers, and non-zero fields in the 416 * iopb which never change. 417 */ 418 419 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 420 xyc->xy_chain[lcv] = NULL; 421 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 422 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 423 xyc->iopbase[lcv].asr = 1; /* always the same */ 424 xyc->iopbase[lcv].eef = 1; /* always the same */ 425 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 426 xyc->iopbase[lcv].aud = 1; /* always the same */ 427 xyc->iopbase[lcv].relo = 1; /* always the same */ 428 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 429 430 error = bus_dmamap_create( 431 xyc->dmatag, 432 MAXPHYS, /* size */ 433 1, /* nsegments */ 434 MAXPHYS, /* maxsegsz */ 435 0, /* boundary */ 436 BUS_DMA_NOWAIT, 437 &xyc->reqs[lcv].dmamap); 438 if (error) { 439 printf("%s: DMA buffer map create error %d\n", 440 xyc->sc_dev.dv_xname, error); 441 return; 442 } 443 } 444 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 445 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 446 xyc->xy_hand = 0; 447 448 /* read controller parameters and insure we have a 450/451 */ 449 450 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 451 res = xyc->ciopb->ctyp; 452 XYC_DONE(xyc, error); 453 if (res != XYCT_450) { 454 if (error) 455 printf(": %s: ", xyc_e2str(error)); 456 printf(": doesn't identify as a 450/451\n"); 457 return; 458 } 459 printf(": Xylogics 450/451"); 460 if (xyc->no_ols) 461 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 462 printf("\n"); 463 if (error) { 464 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 465 xyc_e2str(error)); 466 return; 467 } 468 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 469 printf("%s: 24 bit addressing turned off\n", 470 xyc->sc_dev.dv_xname); 471 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 472 printf("to enable 24 bit mode and this driver\n"); 473 return; 474 } 475 476 /* link in interrupt with higher level software */ 477 vme_intr_map(ct, va->ivector, va->ilevel, &ih); 478 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 479 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 480 481 482 /* now we must look for disks using autoconfig */ 483 xa.fullmode = XY_SUB_POLL; 484 xa.booting = 1; 485 486 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 487 (void) config_found(self, (void *) &xa, NULL); 488 489 /* start the watchdog clock */ 490 timeout(xyc_tick, xyc, XYC_TICKCNT); 491 492 } 493 494 /* 495 * xymatch: probe for disk. 496 * 497 * note: we almost always say disk is present. this allows us to 498 * spin up and configure a disk after the system is booted (we can 499 * call xyattach!). 500 */ 501 int 502 xymatch(parent, cf, aux) 503 struct device *parent; 504 struct cfdata *cf; 505 void *aux; 506 { 507 struct xyc_attach_args *xa = aux; 508 509 /* looking for autoconf wildcard or exact match */ 510 511 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 512 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 513 return 0; 514 515 return 1; 516 517 } 518 519 /* 520 * xyattach: attach a disk. this can be called from autoconf and also 521 * from xyopen/xystrategy. 522 */ 523 void 524 xyattach(parent, self, aux) 525 struct device *parent, *self; 526 void *aux; 527 528 { 529 struct xy_softc *xy = (void *) self, *oxy; 530 struct xyc_softc *xyc = (void *) parent; 531 struct xyc_attach_args *xa = aux; 532 int spt, mb, blk, lcv, fmode, s = 0, newstate; 533 struct dkbad *dkb; 534 int rseg, error; 535 bus_dma_segment_t seg; 536 caddr_t dmaddr; 537 caddr_t buf; 538 539 /* 540 * Always re-initialize the disk structure. We want statistics 541 * to start with a clean slate. 542 */ 543 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 544 xy->sc_dk.dk_driver = &xydkdriver; 545 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 546 547 /* if booting, init the xy_softc */ 548 549 if (xa->booting) { 550 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 551 xy->flags = 0; 552 xy->parent = xyc; 553 554 /* init queue of waiting bufs */ 555 556 xy->xyq.b_active = 0; 557 xy->xyq.b_actf = 0; 558 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 559 560 xy->xyrq = &xyc->reqs[xa->driveno]; 561 562 } 563 xy->xy_drive = xa->driveno; 564 fmode = xa->fullmode; 565 xyc->sc_drives[xa->driveno] = xy; 566 567 /* if not booting, make sure we are the only process in the attach for 568 * this drive. if locked out, sleep on it. */ 569 570 if (!xa->booting) { 571 s = splbio(); 572 while (xy->state == XY_DRIVE_ATTACHING) { 573 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 574 splx(s); 575 return; 576 } 577 } 578 printf("%s at %s", 579 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 580 } 581 582 /* we now have control */ 583 xy->state = XY_DRIVE_ATTACHING; 584 newstate = XY_DRIVE_UNKNOWN; 585 586 buf = NULL; 587 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 588 &seg, 1, &rseg, BUS_DMA_NOWAIT); 589 if (error) { 590 printf("%s: DMA buffer alloc error %d\n", 591 xy->sc_dev.dv_xname, error); 592 goto done; 593 } 594 dmaddr = (caddr_t)seg.ds_addr; 595 596 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 597 &buf, 598 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 599 if (error) { 600 printf("%s: DMA buffer alloc error %d\n", 601 xy->sc_dev.dv_xname, error); 602 bus_dmamem_free(xyc->dmatag, &seg, rseg); 603 goto done; 604 } 605 606 607 /* first try and reset the drive */ 608 609 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 610 XYC_DONE(xyc, error); 611 if (error == XY_ERR_DNRY) { 612 printf(" drive %d: off-line\n", xa->driveno); 613 goto done; 614 } 615 if (error) { 616 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 617 goto done; 618 } 619 printf(" drive %d: ready", xa->driveno); 620 621 /* 622 * now set drive parameters (to semi-bogus values) so we can read the 623 * disk label. 624 */ 625 xy->pcyl = xy->ncyl = 1; 626 xy->acyl = 0; 627 xy->nhead = 1; 628 xy->nsect = 1; 629 xy->sectpercyl = 1; 630 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 631 xy->dkb.bt_bad[lcv].bt_cyl = 632 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 633 634 /* read disk label */ 635 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 636 xy->drive_type++) { 637 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 638 dmaddr, fmode); 639 XYC_DONE(xyc, error); 640 if (error == XY_ERR_AOK) break; 641 } 642 643 if (error != XY_ERR_AOK) { 644 printf("\n%s: reading disk label failed: %s\n", 645 xy->sc_dev.dv_xname, xyc_e2str(error)); 646 goto done; 647 } 648 printf(" (drive type %d)\n", xy->drive_type); 649 650 newstate = XY_DRIVE_NOLABEL; 651 652 xy->hw_spt = spt = 0; /* XXX needed ? */ 653 /* Attach the disk: must be before getdisklabel to malloc label */ 654 disk_attach(&xy->sc_dk); 655 656 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 657 goto done; 658 659 /* inform the user of what is up */ 660 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 661 buf, xy->pcyl); 662 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 663 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 664 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 665 XYFM_BPS); 666 667 /* 668 * 450/451 stupidity: the drive type is encoded into the format 669 * of the disk. the drive type in the IOPB must match the drive 670 * type in the format, or you will not be able to do I/O to the 671 * disk (you get header not found errors). if you have two drives 672 * of different sizes that have the same drive type in their 673 * formatting then you are out of luck. 674 * 675 * this problem was corrected in the 753/7053. 676 */ 677 678 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 679 oxy = xyc->sc_drives[lcv]; 680 if (oxy == NULL || oxy == xy) continue; 681 if (oxy->drive_type != xy->drive_type) continue; 682 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 683 xy->nhead != oxy->nhead) { 684 printf("%s: %s and %s must be the same size!\n", 685 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 686 oxy->sc_dev.dv_xname); 687 panic("xy drive size mismatch"); 688 } 689 } 690 691 692 /* now set the real drive parameters! */ 693 694 blk = (xy->nsect - 1) + 695 ((xy->nhead - 1) * xy->nsect) + 696 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 697 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 698 XYC_DONE(xyc, error); 699 if (error) { 700 printf("%s: write drive size failed: %s\n", 701 xy->sc_dev.dv_xname, xyc_e2str(error)); 702 goto done; 703 } 704 newstate = XY_DRIVE_ONLINE; 705 706 /* 707 * read bad144 table. this table resides on the first sector of the 708 * last track of the disk (i.e. second cyl of "acyl" area). 709 */ 710 711 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 712 /* last cyl */ 713 (xy->nhead - 1) * xy->nsect; /* last head */ 714 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 715 dmaddr, fmode); 716 XYC_DONE(xyc, error); 717 if (error) { 718 printf("%s: reading bad144 failed: %s\n", 719 xy->sc_dev.dv_xname, xyc_e2str(error)); 720 goto done; 721 } 722 723 /* check dkbad for sanity */ 724 dkb = (struct dkbad *) buf; 725 for (lcv = 0; lcv < 126; lcv++) { 726 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 727 dkb->bt_bad[lcv].bt_cyl == 0) && 728 dkb->bt_bad[lcv].bt_trksec == 0xffff) 729 continue; /* blank */ 730 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 731 break; 732 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 733 break; 734 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 735 break; 736 } 737 if (lcv != 126) { 738 printf("%s: warning: invalid bad144 sector!\n", 739 xy->sc_dev.dv_xname); 740 } else { 741 bcopy(buf, &xy->dkb, XYFM_BPS); 742 } 743 744 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 745 746 done: 747 if (buf != NULL) { 748 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 749 bus_dmamem_free(xyc->dmatag, &seg, rseg); 750 } 751 752 xy->state = newstate; 753 if (!xa->booting) { 754 wakeup(&xy->state); 755 splx(s); 756 } 757 } 758 759 /* 760 * end of autoconfig functions 761 */ 762 763 /* 764 * { b , c } d e v s w f u n c t i o n s 765 */ 766 767 /* 768 * xyclose: close device 769 */ 770 int 771 xyclose(dev, flag, fmt, p) 772 dev_t dev; 773 int flag, fmt; 774 struct proc *p; 775 776 { 777 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 778 int part = DISKPART(dev); 779 780 /* clear mask bits */ 781 782 switch (fmt) { 783 case S_IFCHR: 784 xy->sc_dk.dk_copenmask &= ~(1 << part); 785 break; 786 case S_IFBLK: 787 xy->sc_dk.dk_bopenmask &= ~(1 << part); 788 break; 789 } 790 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 791 792 return 0; 793 } 794 795 /* 796 * xydump: crash dump system 797 */ 798 int 799 xydump(dev, blkno, va, size) 800 dev_t dev; 801 daddr_t blkno; 802 caddr_t va; 803 size_t size; 804 { 805 int unit, part; 806 struct xy_softc *xy; 807 808 unit = DISKUNIT(dev); 809 if (unit >= xy_cd.cd_ndevs) 810 return ENXIO; 811 part = DISKPART(dev); 812 813 xy = xy_cd.cd_devs[unit]; 814 815 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 816 'a' + part); 817 818 return ENXIO; 819 820 /* outline: globals: "dumplo" == sector number of partition to start 821 * dump at (convert to physical sector with partition table) 822 * "dumpsize" == size of dump in clicks "physmem" == size of physical 823 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 824 * physmem) 825 * 826 * dump a copy of physical memory to the dump device starting at sector 827 * "dumplo" in the swap partition (make sure > 0). map in pages as 828 * we go. use polled I/O. 829 * 830 * XXX how to handle NON_CONTIG? */ 831 832 } 833 834 /* 835 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 836 */ 837 int 838 xyioctl(dev, command, addr, flag, p) 839 dev_t dev; 840 u_long command; 841 caddr_t addr; 842 int flag; 843 struct proc *p; 844 845 { 846 struct xy_softc *xy; 847 struct xd_iocmd *xio; 848 int error, s, unit; 849 850 unit = DISKUNIT(dev); 851 852 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 853 return (ENXIO); 854 855 /* switch on ioctl type */ 856 857 switch (command) { 858 case DIOCSBAD: /* set bad144 info */ 859 if ((flag & FWRITE) == 0) 860 return EBADF; 861 s = splbio(); 862 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 863 splx(s); 864 return 0; 865 866 case DIOCGDINFO: /* get disk label */ 867 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 868 return 0; 869 870 case DIOCGPART: /* get partition info */ 871 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 872 ((struct partinfo *) addr)->part = 873 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 874 return 0; 875 876 case DIOCSDINFO: /* set disk label */ 877 if ((flag & FWRITE) == 0) 878 return EBADF; 879 error = setdisklabel(xy->sc_dk.dk_label, 880 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 881 xy->sc_dk.dk_cpulabel); 882 if (error == 0) { 883 if (xy->state == XY_DRIVE_NOLABEL) 884 xy->state = XY_DRIVE_ONLINE; 885 } 886 return error; 887 888 case DIOCWLABEL: /* change write status of disk label */ 889 if ((flag & FWRITE) == 0) 890 return EBADF; 891 if (*(int *) addr) 892 xy->flags |= XY_WLABEL; 893 else 894 xy->flags &= ~XY_WLABEL; 895 return 0; 896 897 case DIOCWDINFO: /* write disk label */ 898 if ((flag & FWRITE) == 0) 899 return EBADF; 900 error = setdisklabel(xy->sc_dk.dk_label, 901 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 902 xy->sc_dk.dk_cpulabel); 903 if (error == 0) { 904 if (xy->state == XY_DRIVE_NOLABEL) 905 xy->state = XY_DRIVE_ONLINE; 906 907 /* Simulate opening partition 0 so write succeeds. */ 908 xy->sc_dk.dk_openmask |= (1 << 0); 909 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 910 xystrategy, xy->sc_dk.dk_label, 911 xy->sc_dk.dk_cpulabel); 912 xy->sc_dk.dk_openmask = 913 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 914 } 915 return error; 916 917 case DIOSXDCMD: 918 xio = (struct xd_iocmd *) addr; 919 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 920 return (error); 921 return (xyc_ioctlcmd(xy, dev, xio)); 922 923 default: 924 return ENOTTY; 925 } 926 } 927 928 /* 929 * xyopen: open drive 930 */ 931 932 int 933 xyopen(dev, flag, fmt, p) 934 dev_t dev; 935 int flag, fmt; 936 struct proc *p; 937 { 938 int unit, part; 939 struct xy_softc *xy; 940 struct xyc_attach_args xa; 941 942 /* first, could it be a valid target? */ 943 944 unit = DISKUNIT(dev); 945 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 946 return (ENXIO); 947 part = DISKPART(dev); 948 949 /* do we need to attach the drive? */ 950 951 if (xy->state == XY_DRIVE_UNKNOWN) { 952 xa.driveno = xy->xy_drive; 953 xa.fullmode = XY_SUB_WAIT; 954 xa.booting = 0; 955 xyattach((struct device *) xy->parent, 956 (struct device *) xy, &xa); 957 if (xy->state == XY_DRIVE_UNKNOWN) { 958 return (EIO); 959 } 960 } 961 /* check for partition */ 962 963 if (part != RAW_PART && 964 (part >= xy->sc_dk.dk_label->d_npartitions || 965 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 966 return (ENXIO); 967 } 968 /* set open masks */ 969 970 switch (fmt) { 971 case S_IFCHR: 972 xy->sc_dk.dk_copenmask |= (1 << part); 973 break; 974 case S_IFBLK: 975 xy->sc_dk.dk_bopenmask |= (1 << part); 976 break; 977 } 978 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 979 980 return 0; 981 } 982 983 int 984 xyread(dev, uio, flags) 985 dev_t dev; 986 struct uio *uio; 987 int flags; 988 { 989 990 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 991 } 992 993 int 994 xywrite(dev, uio, flags) 995 dev_t dev; 996 struct uio *uio; 997 int flags; 998 { 999 1000 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1001 } 1002 1003 1004 /* 1005 * xysize: return size of a partition for a dump 1006 */ 1007 1008 int 1009 xysize(dev) 1010 dev_t dev; 1011 1012 { 1013 struct xy_softc *xysc; 1014 int unit, part, size, omask; 1015 1016 /* valid unit? */ 1017 unit = DISKUNIT(dev); 1018 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1019 return (-1); 1020 1021 part = DISKPART(dev); 1022 omask = xysc->sc_dk.dk_openmask & (1 << part); 1023 1024 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1025 return (-1); 1026 1027 /* do it */ 1028 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1029 size = -1; /* only give valid size for swap partitions */ 1030 else 1031 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1032 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1033 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1034 return (-1); 1035 return (size); 1036 } 1037 1038 /* 1039 * xystrategy: buffering system interface to xy. 1040 */ 1041 1042 void 1043 xystrategy(bp) 1044 struct buf *bp; 1045 1046 { 1047 struct xy_softc *xy; 1048 int s, unit; 1049 struct xyc_attach_args xa; 1050 1051 unit = DISKUNIT(bp->b_dev); 1052 1053 /* check for live device */ 1054 1055 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1056 bp->b_blkno < 0 || 1057 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1058 bp->b_error = EINVAL; 1059 goto bad; 1060 } 1061 /* do we need to attach the drive? */ 1062 1063 if (xy->state == XY_DRIVE_UNKNOWN) { 1064 xa.driveno = xy->xy_drive; 1065 xa.fullmode = XY_SUB_WAIT; 1066 xa.booting = 0; 1067 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1068 if (xy->state == XY_DRIVE_UNKNOWN) { 1069 bp->b_error = EIO; 1070 goto bad; 1071 } 1072 } 1073 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1074 /* no I/O to unlabeled disks, unless raw partition */ 1075 bp->b_error = EIO; 1076 goto bad; 1077 } 1078 /* short circuit zero length request */ 1079 1080 if (bp->b_bcount == 0) 1081 goto done; 1082 1083 /* check bounds with label (disksubr.c). Determine the size of the 1084 * transfer, and make sure it is within the boundaries of the 1085 * partition. Adjust transfer if needed, and signal errors or early 1086 * completion. */ 1087 1088 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1089 (xy->flags & XY_WLABEL) != 0) <= 0) 1090 goto done; 1091 1092 /* 1093 * now we know we have a valid buf structure that we need to do I/O 1094 * on. 1095 */ 1096 s = splbio(); /* protect the queues */ 1097 1098 disksort(&xy->xyq, bp); 1099 1100 /* start 'em up */ 1101 1102 xyc_start(xy->parent, NULL); 1103 1104 /* done! */ 1105 1106 splx(s); 1107 return; 1108 1109 bad: /* tells upper layers we have an error */ 1110 bp->b_flags |= B_ERROR; 1111 done: /* tells upper layers we are done with this 1112 * buf */ 1113 bp->b_resid = bp->b_bcount; 1114 biodone(bp); 1115 } 1116 /* 1117 * end of {b,c}devsw functions 1118 */ 1119 1120 /* 1121 * i n t e r r u p t f u n c t i o n 1122 * 1123 * xycintr: hardware interrupt. 1124 */ 1125 int 1126 xycintr(v) 1127 void *v; 1128 1129 { 1130 struct xyc_softc *xycsc = v; 1131 1132 /* kick the event counter */ 1133 1134 xycsc->sc_intrcnt.ev_count++; 1135 1136 /* remove as many done IOPBs as possible */ 1137 1138 xyc_remove_iorq(xycsc); 1139 1140 /* start any iorq's already waiting */ 1141 1142 xyc_start(xycsc, NULL); 1143 1144 return (1); 1145 } 1146 /* 1147 * end of interrupt function 1148 */ 1149 1150 /* 1151 * i n t e r n a l f u n c t i o n s 1152 */ 1153 1154 /* 1155 * xyc_rqinit: fill out the fields of an I/O request 1156 */ 1157 1158 inline void 1159 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1160 struct xy_iorq *rq; 1161 struct xyc_softc *xyc; 1162 struct xy_softc *xy; 1163 int md; 1164 u_long blk; 1165 int cnt; 1166 caddr_t db; 1167 struct buf *bp; 1168 { 1169 rq->xyc = xyc; 1170 rq->xy = xy; 1171 rq->ttl = XYC_MAXTTL + 10; 1172 rq->mode = md; 1173 rq->tries = rq->errno = rq->lasterror = 0; 1174 rq->blockno = blk; 1175 rq->sectcnt = cnt; 1176 rq->dbuf = db; 1177 rq->buf = bp; 1178 } 1179 1180 /* 1181 * xyc_rqtopb: load up an IOPB based on an iorq 1182 */ 1183 1184 void 1185 xyc_rqtopb(iorq, iopb, cmd, subfun) 1186 struct xy_iorq *iorq; 1187 struct xy_iopb *iopb; 1188 int cmd, subfun; 1189 1190 { 1191 u_long block, dp; 1192 1193 /* normal IOPB case, standard stuff */ 1194 1195 /* chain bit handled later */ 1196 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1197 iopb->com = cmd; 1198 iopb->errno = 0; 1199 iopb->errs = 0; 1200 iopb->done = 0; 1201 if (iorq->xy) { 1202 iopb->unit = iorq->xy->xy_drive; 1203 iopb->dt = iorq->xy->drive_type; 1204 } else { 1205 iopb->unit = 0; 1206 iopb->dt = 0; 1207 } 1208 block = iorq->blockno; 1209 if (iorq->xy == NULL || block == 0) { 1210 iopb->sect = iopb->head = iopb->cyl = 0; 1211 } else { 1212 iopb->sect = block % iorq->xy->nsect; 1213 block = block / iorq->xy->nsect; 1214 iopb->head = block % iorq->xy->nhead; 1215 block = block / iorq->xy->nhead; 1216 iopb->cyl = block; 1217 } 1218 iopb->scnt = iorq->sectcnt; 1219 dp = (u_long) iorq->dbuf; 1220 if (iorq->dbuf == NULL) { 1221 iopb->dataa = 0; 1222 iopb->datar = 0; 1223 } else { 1224 iopb->dataa = (dp & 0xffff); 1225 iopb->datar = ((dp & 0xff0000) >> 16); 1226 } 1227 iopb->subfn = subfun; 1228 } 1229 1230 1231 /* 1232 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1233 */ 1234 1235 int 1236 xyc_unbusy(xyc, del) 1237 1238 struct xyc *xyc; 1239 int del; 1240 1241 { 1242 while (del-- > 0) { 1243 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1244 break; 1245 DELAY(1); 1246 } 1247 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1248 } 1249 1250 /* 1251 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1252 * note that NORM requests are handled seperately. 1253 */ 1254 int 1255 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1256 struct xyc_softc *xycsc; 1257 int cmd, subfn, unit, block, scnt; 1258 char *dptr; 1259 int fullmode; 1260 1261 { 1262 int submode = XY_STATE(fullmode); 1263 struct xy_iorq *iorq = xycsc->ciorq; 1264 struct xy_iopb *iopb = xycsc->ciopb; 1265 1266 /* 1267 * is someone else using the control iopq wait for it if we can 1268 */ 1269 start: 1270 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1271 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1272 return(XY_ERR_FAIL); 1273 goto start; 1274 } 1275 1276 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1277 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1278 iorq->mode = XY_SUB_FREE; 1279 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1280 } 1281 1282 /* init iorq/iopb */ 1283 1284 xyc_rqinit(iorq, xycsc, 1285 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1286 fullmode, block, scnt, dptr, NULL); 1287 1288 /* load IOPB from iorq */ 1289 1290 xyc_rqtopb(iorq, iopb, cmd, subfn); 1291 1292 /* submit it for processing */ 1293 1294 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1295 1296 return(XY_ERR_AOK); 1297 } 1298 1299 /* 1300 * xyc_startbuf 1301 * start a buffer for running 1302 */ 1303 1304 int 1305 xyc_startbuf(xycsc, xysc, bp) 1306 struct xyc_softc *xycsc; 1307 struct xy_softc *xysc; 1308 struct buf *bp; 1309 1310 { 1311 int partno, error; 1312 struct xy_iorq *iorq; 1313 struct xy_iopb *iopb; 1314 u_long block; 1315 1316 iorq = xysc->xyrq; 1317 iopb = iorq->iopb; 1318 1319 /* get buf */ 1320 1321 if (bp == NULL) 1322 panic("xyc_startbuf null buf"); 1323 1324 partno = DISKPART(bp->b_dev); 1325 #ifdef XYC_DEBUG 1326 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1327 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1328 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1329 bp->b_bcount, bp->b_data); 1330 #endif 1331 1332 /* 1333 * load request. we have to calculate the correct block number based 1334 * on partition info. 1335 * 1336 * note that iorq points to the buffer as mapped into DVMA space, 1337 * where as the bp->b_data points to its non-DVMA mapping. 1338 */ 1339 1340 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1341 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1342 1343 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1344 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1345 if (error != 0) { 1346 printf("%s: warning: cannot load DMA map\n", 1347 xycsc->sc_dev.dv_xname); 1348 return (XY_ERR_FAIL); /* XXX: need some sort of 1349 * call-back scheme here? */ 1350 } 1351 1352 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1353 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1354 ? BUS_DMASYNC_PREREAD 1355 : BUS_DMASYNC_PREWRITE); 1356 1357 /* init iorq and load iopb from it */ 1358 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1359 bp->b_bcount / XYFM_BPS, 1360 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1361 bp); 1362 1363 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1364 1365 /* Instrumentation. */ 1366 disk_busy(&xysc->sc_dk); 1367 1368 return (XY_ERR_AOK); 1369 } 1370 1371 1372 /* 1373 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1374 * if ok. if it fail returns an error code. type is XY_SUB_*. 1375 * 1376 * note: caller frees iorq in all cases except NORM 1377 * 1378 * return value: 1379 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1380 * WAIT: XY_AOK (success), <error-code> (failed) 1381 * POLL: <same as WAIT> 1382 * NOQ : <same as NORM> 1383 * 1384 * there are three sources for i/o requests: 1385 * [1] xystrategy: normal block I/O, using "struct buf" system. 1386 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1387 * [3] open/ioctl: these are I/O requests done in the context of a process, 1388 * and the process should block until they are done. 1389 * 1390 * software state is stored in the iorq structure. each iorq has an 1391 * iopb structure. the hardware understands the iopb structure. 1392 * every command must go through an iopb. a 450 handles one iopb at a 1393 * time, where as a 451 can take them in chains. [the 450 claims it 1394 * can handle chains, but is appears to be buggy...] iopb are allocated 1395 * in DVMA space at boot up time. each disk gets one iopb, and the 1396 * controller gets one (for POLL and WAIT commands). what happens if 1397 * the iopb is busy? for i/o type [1], the buffers are queued at the 1398 * "buff" layer and * picked up later by the interrupt routine. for case 1399 * [2] we can only be blocked if there is a WAIT type I/O request being 1400 * run. since this can only happen when we are crashing, we wait a sec 1401 * and then steal the IOPB. for case [3] the process can sleep 1402 * on the iorq free list until some iopbs are avaliable. 1403 */ 1404 1405 1406 int 1407 xyc_submit_iorq(xycsc, iorq, type) 1408 struct xyc_softc *xycsc; 1409 struct xy_iorq *iorq; 1410 int type; 1411 1412 { 1413 struct xy_iopb *dmaiopb; 1414 1415 #ifdef XYC_DEBUG 1416 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1417 xycsc->sc_dev.dv_xname, iorq, type); 1418 #endif 1419 1420 /* first check and see if controller is busy */ 1421 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1422 #ifdef XYC_DEBUG 1423 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1424 #endif 1425 if (type == XY_SUB_NOQ) 1426 return (XY_ERR_FAIL); /* failed */ 1427 switch (type) { 1428 case XY_SUB_NORM: 1429 return XY_ERR_AOK; /* success */ 1430 case XY_SUB_WAIT: 1431 while (iorq->iopb->done == 0) { 1432 sleep(iorq, PRIBIO); 1433 } 1434 return (iorq->errno); 1435 case XY_SUB_POLL: /* steal controller */ 1436 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1437 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1438 panic("xyc_submit_iorq: stuck xyc"); 1439 printf("%s: stole controller\n", 1440 xycsc->sc_dev.dv_xname); 1441 break; 1442 default: 1443 panic("xyc_submit_iorq adding"); 1444 } 1445 } 1446 1447 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1448 if (dmaiopb == NULL) { /* nothing doing? */ 1449 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1450 return(XY_ERR_AOK); 1451 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1452 } 1453 1454 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1455 1456 /* command now running, wrap it up */ 1457 switch (type) { 1458 case XY_SUB_NORM: 1459 case XY_SUB_NOQ: 1460 return (XY_ERR_AOK); /* success */ 1461 case XY_SUB_WAIT: 1462 while (iorq->iopb->done == 0) { 1463 sleep(iorq, PRIBIO); 1464 } 1465 return (iorq->errno); 1466 case XY_SUB_POLL: 1467 return (xyc_piodriver(xycsc, iorq)); 1468 default: 1469 panic("xyc_submit_iorq wrap up"); 1470 } 1471 panic("xyc_submit_iorq"); 1472 return 0; /* not reached */ 1473 } 1474 1475 1476 /* 1477 * xyc_chain: build a chain. return dvma address of first element in 1478 * the chain. iorq != NULL: means we only want that item on the chain. 1479 */ 1480 1481 struct xy_iopb * 1482 xyc_chain(xycsc, iorq) 1483 struct xyc_softc *xycsc; 1484 struct xy_iorq *iorq; 1485 1486 { 1487 int togo, chain, hand; 1488 1489 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1490 1491 /* 1492 * promote control IOPB to the top 1493 */ 1494 if (iorq == NULL) { 1495 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1496 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1497 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1498 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1499 } 1500 1501 /* 1502 * special case: if iorq != NULL then we have a POLL or WAIT request. 1503 * we let these take priority and do them first. 1504 */ 1505 if (iorq) { 1506 xycsc->xy_chain[0] = iorq; 1507 iorq->iopb->chen = 0; 1508 return(iorq->dmaiopb); 1509 } 1510 1511 /* 1512 * NORM case: do round robin and maybe chain (if allowed and possible) 1513 */ 1514 chain = 0; 1515 hand = xycsc->xy_hand; 1516 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1517 1518 for (togo = XYC_MAXIOPB; togo > 0; 1519 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1520 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1521 1522 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1523 xycsc->iopbase[hand].done) 1524 continue; /* not ready-for-i/o */ 1525 1526 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1527 iopb = xycsc->xy_chain[chain]->iopb; 1528 iopb->chen = 0; 1529 if (chain != 0) { 1530 /* adding a link to a chain */ 1531 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1532 prev_iopb->chen = 1; 1533 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1534 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1535 } else { 1536 /* head of chain */ 1537 iorq = xycsc->xy_chain[chain]; 1538 } 1539 chain++; 1540 1541 /* quit if chaining dis-allowed */ 1542 if (xycsc->no_ols) 1543 break; 1544 } 1545 1546 return(iorq ? iorq->dmaiopb : NULL); 1547 } 1548 1549 /* 1550 * xyc_piodriver 1551 * 1552 * programmed i/o driver. this function takes over the computer 1553 * and drains off the polled i/o request. it returns the status of the iorq 1554 * the caller is interesting in. 1555 */ 1556 int 1557 xyc_piodriver(xycsc, iorq) 1558 struct xyc_softc *xycsc; 1559 struct xy_iorq *iorq; 1560 1561 { 1562 int nreset = 0; 1563 int retval = 0; 1564 u_long res; 1565 #ifdef XYC_DEBUG 1566 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1567 #endif 1568 1569 while (iorq->iopb->done == 0) { 1570 1571 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1572 1573 /* we expect some progress soon */ 1574 if (res == XY_ERR_FAIL && nreset >= 2) { 1575 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1576 #ifdef XYC_DEBUG 1577 printf("xyc_piodriver: timeout\n"); 1578 #endif 1579 return (XY_ERR_FAIL); 1580 } 1581 if (res == XY_ERR_FAIL) { 1582 if (xyc_reset(xycsc, 0, 1583 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1584 XY_ERR_FAIL, 1585 0) == XY_ERR_FAIL) 1586 return (XY_ERR_FAIL); /* flushes all but POLL 1587 * requests, resets */ 1588 continue; 1589 } 1590 1591 xyc_remove_iorq(xycsc); /* may resubmit request */ 1592 1593 if (iorq->iopb->done == 0) 1594 xyc_start(xycsc, iorq); 1595 } 1596 1597 /* get return value */ 1598 1599 retval = iorq->errno; 1600 1601 #ifdef XYC_DEBUG 1602 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1603 iorq->errno, xyc_e2str(iorq->errno)); 1604 #endif 1605 1606 /* start up any bufs that have queued */ 1607 1608 xyc_start(xycsc, NULL); 1609 1610 return (retval); 1611 } 1612 1613 /* 1614 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1615 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1616 */ 1617 void 1618 xyc_xyreset(xycsc, xysc) 1619 struct xyc_softc *xycsc; 1620 struct xy_softc *xysc; 1621 1622 { 1623 struct xy_iopb tmpiopb; 1624 struct xy_iopb *iopb; 1625 int del; 1626 1627 iopb = xycsc->ciopb; 1628 1629 /* Save contents */ 1630 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1631 1632 iopb->chen = iopb->done = iopb->errs = 0; 1633 iopb->ien = 0; 1634 iopb->com = XYCMD_RST; 1635 iopb->unit = xysc->xy_drive; 1636 1637 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1638 1639 del = XYC_RESETUSEC; 1640 while (del > 0) { 1641 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1642 break; 1643 DELAY(1); 1644 del--; 1645 } 1646 1647 if (del <= 0 || iopb->errs) { 1648 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1649 xyc_e2str(iopb->errno)); 1650 del = xycsc->xyc->xyc_rsetup; 1651 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1652 panic("xyc_reset"); 1653 } else { 1654 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1655 } 1656 1657 /* Restore contents */ 1658 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1659 } 1660 1661 1662 /* 1663 * xyc_reset: reset everything: requests are marked as errors except 1664 * a polled request (which is resubmitted) 1665 */ 1666 int 1667 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1668 struct xyc_softc *xycsc; 1669 int quiet, error; 1670 struct xy_iorq *blastmode; 1671 struct xy_softc *xysc; 1672 1673 { 1674 int del = 0, lcv, retval = XY_ERR_AOK; 1675 1676 /* soft reset hardware */ 1677 1678 if (!quiet) 1679 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1680 del = xycsc->xyc->xyc_rsetup; 1681 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1682 if (del == XY_ERR_FAIL) { 1683 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1684 retval = XY_ERR_FAIL; 1685 } 1686 if (xysc) 1687 xyc_xyreset(xycsc, xysc); 1688 1689 /* fix queues based on "blast-mode" */ 1690 1691 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1692 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1693 1694 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1695 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1696 XY_STATE(iorq->mode) != XY_SUB_NORM) 1697 /* is it active? */ 1698 continue; 1699 1700 if (blastmode == XY_RSET_ALL || 1701 blastmode != iorq) { 1702 /* failed */ 1703 iorq->errno = error; 1704 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1705 switch (XY_STATE(iorq->mode)) { 1706 case XY_SUB_NORM: 1707 iorq->buf->b_error = EIO; 1708 iorq->buf->b_flags |= B_ERROR; 1709 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1710 1711 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1712 iorq->dmamap->dm_mapsize, 1713 (iorq->buf->b_flags & B_READ) 1714 ? BUS_DMASYNC_POSTREAD 1715 : BUS_DMASYNC_POSTWRITE); 1716 1717 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1718 1719 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1720 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1721 (xycsc->reqs[lcv].buf->b_bcount - 1722 xycsc->reqs[lcv].buf->b_resid)); 1723 biodone(iorq->buf); 1724 iorq->mode = XY_SUB_FREE; 1725 break; 1726 case XY_SUB_WAIT: 1727 wakeup(iorq); 1728 case XY_SUB_POLL: 1729 iorq->mode = 1730 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1731 break; 1732 } 1733 1734 } else { 1735 1736 /* resubmit, no need to do anything here */ 1737 } 1738 } 1739 1740 /* 1741 * now, if stuff is waiting, start it. 1742 * since we just reset it should go 1743 */ 1744 xyc_start(xycsc, NULL); 1745 1746 return (retval); 1747 } 1748 1749 /* 1750 * xyc_start: start waiting buffers 1751 */ 1752 1753 void 1754 xyc_start(xycsc, iorq) 1755 struct xyc_softc *xycsc; 1756 struct xy_iorq *iorq; 1757 1758 { 1759 int lcv; 1760 struct xy_softc *xy; 1761 1762 if (iorq == NULL) { 1763 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1764 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1765 if (xy->xyq.b_actf == NULL) continue; 1766 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1767 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1768 } 1769 } 1770 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1771 } 1772 1773 /* 1774 * xyc_remove_iorq: remove "done" IOPB's. 1775 */ 1776 1777 int 1778 xyc_remove_iorq(xycsc) 1779 struct xyc_softc *xycsc; 1780 1781 { 1782 int errno, rq, comm, errs; 1783 struct xyc *xyc = xycsc->xyc; 1784 u_long addr; 1785 struct xy_iopb *iopb; 1786 struct xy_iorq *iorq; 1787 struct buf *bp; 1788 1789 if (xyc->xyc_csr & XYC_DERR) { 1790 /* 1791 * DOUBLE ERROR: should never happen under normal use. This 1792 * error is so bad, you can't even tell which IOPB is bad, so 1793 * we dump them all. 1794 */ 1795 errno = XY_ERR_DERR; 1796 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1797 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1798 printf("%s: soft reset failed!\n", 1799 xycsc->sc_dev.dv_xname); 1800 panic("xyc_remove_iorq: controller DEAD"); 1801 } 1802 return (XY_ERR_AOK); 1803 } 1804 1805 /* 1806 * get iopb that is done, loop down the chain 1807 */ 1808 1809 if (xyc->xyc_csr & XYC_ERR) { 1810 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1811 } 1812 if (xyc->xyc_csr & XYC_IPND) { 1813 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1814 } 1815 1816 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1817 iorq = xycsc->xy_chain[rq]; 1818 if (iorq == NULL) break; /* done ! */ 1819 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1820 continue; /* free, or done */ 1821 iopb = iorq->iopb; 1822 if (iopb->done == 0) 1823 continue; /* not done yet */ 1824 1825 comm = iopb->com; 1826 errs = iopb->errs; 1827 1828 if (errs) 1829 iorq->errno = iopb->errno; 1830 else 1831 iorq->errno = 0; 1832 1833 /* handle non-fatal errors */ 1834 1835 if (errs && 1836 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1837 continue; /* AOK: we resubmitted it */ 1838 1839 1840 /* this iorq is now done (hasn't been restarted or anything) */ 1841 1842 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1843 xyc_perror(iorq, iopb, 0); 1844 1845 /* now, if read/write check to make sure we got all the data 1846 * we needed. (this may not be the case if we got an error in 1847 * the middle of a multisector request). */ 1848 1849 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1850 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1851 /* we just successfully processed a bad144 sector 1852 * note: if we are in bad 144 mode, the pointers have 1853 * been advanced already (see above) and are pointing 1854 * at the bad144 sector. to exit bad144 mode, we 1855 * must advance the pointers 1 sector and issue a new 1856 * request if there are still sectors left to process 1857 * 1858 */ 1859 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1860 1861 /* exit b144 mode */ 1862 iorq->mode = iorq->mode & (~XY_MODE_B144); 1863 1864 if (iorq->sectcnt) { /* more to go! */ 1865 iorq->lasterror = iorq->errno = iopb->errno = 0; 1866 iopb->errs = iopb->done = 0; 1867 iorq->tries = 0; 1868 iopb->scnt = iorq->sectcnt; 1869 iopb->cyl = iorq->blockno / 1870 iorq->xy->sectpercyl; 1871 iopb->head = 1872 (iorq->blockno / iorq->xy->nhead) % 1873 iorq->xy->nhead; 1874 iopb->sect = iorq->blockno % XYFM_BPS; 1875 addr = (u_long) iorq->dbuf; 1876 iopb->dataa = (addr & 0xffff); 1877 iopb->datar = ((addr & 0xff0000) >> 16); 1878 /* will resubit at end */ 1879 continue; 1880 } 1881 } 1882 /* final cleanup, totally done with this request */ 1883 1884 switch (XY_STATE(iorq->mode)) { 1885 case XY_SUB_NORM: 1886 bp = iorq->buf; 1887 if (errs) { 1888 bp->b_error = EIO; 1889 bp->b_flags |= B_ERROR; 1890 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1891 } else { 1892 bp->b_resid = 0; /* done */ 1893 } 1894 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1895 iorq->dmamap->dm_mapsize, 1896 (iorq->buf->b_flags & B_READ) 1897 ? BUS_DMASYNC_POSTREAD 1898 : BUS_DMASYNC_POSTWRITE); 1899 1900 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1901 1902 iorq->xy->xyq.b_actf = bp->b_actf; 1903 disk_unbusy(&iorq->xy->sc_dk, 1904 (bp->b_bcount - bp->b_resid)); 1905 iorq->mode = XY_SUB_FREE; 1906 biodone(bp); 1907 break; 1908 case XY_SUB_WAIT: 1909 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1910 wakeup(iorq); 1911 break; 1912 case XY_SUB_POLL: 1913 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1914 break; 1915 } 1916 } 1917 1918 return (XY_ERR_AOK); 1919 } 1920 1921 /* 1922 * xyc_perror: print error. 1923 * - if still_trying is true: we got an error, retried and got a 1924 * different error. in that case lasterror is the old error, 1925 * and errno is the new one. 1926 * - if still_trying is not true, then if we ever had an error it 1927 * is in lasterror. also, if iorq->errno == 0, then we recovered 1928 * from that error (otherwise iorq->errno == iorq->lasterror). 1929 */ 1930 void 1931 xyc_perror(iorq, iopb, still_trying) 1932 struct xy_iorq *iorq; 1933 struct xy_iopb *iopb; 1934 int still_trying; 1935 1936 { 1937 1938 int error = iorq->lasterror; 1939 1940 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1941 : iorq->xyc->sc_dev.dv_xname); 1942 if (iorq->buf) 1943 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1944 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1945 printf("%s %d/%d/%d: ", 1946 (iopb->com == XYCMD_RD) ? "read" : "write", 1947 iopb->cyl, iopb->head, iopb->sect); 1948 printf("%s", xyc_e2str(error)); 1949 1950 if (still_trying) 1951 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1952 else 1953 if (iorq->errno == 0) 1954 printf(" [recovered in %d tries]", iorq->tries); 1955 1956 printf("\n"); 1957 } 1958 1959 /* 1960 * xyc_error: non-fatal error encountered... recover. 1961 * return AOK if resubmitted, return FAIL if this iopb is done 1962 */ 1963 int 1964 xyc_error(xycsc, iorq, iopb, comm) 1965 struct xyc_softc *xycsc; 1966 struct xy_iorq *iorq; 1967 struct xy_iopb *iopb; 1968 int comm; 1969 1970 { 1971 int errno = iorq->errno; 1972 int erract = xyc_entoact(errno); 1973 int oldmode, advance; 1974 #ifdef sparc 1975 int i; 1976 #endif 1977 1978 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1979 oldmode = iorq->mode; 1980 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1981 /* make xyc_start ignore us */ 1982 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1983 iorq->mode = oldmode; 1984 } 1985 /* check for read/write to a sector in bad144 table if bad: redirect 1986 * request to bad144 area */ 1987 1988 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1989 (iorq->mode & XY_MODE_B144) == 0) { 1990 advance = iorq->sectcnt - iopb->scnt; 1991 XYC_ADVANCE(iorq, advance); 1992 #ifdef sparc 1993 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1994 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1995 iorq->blockno % iorq->xy->nsect)) != -1) { 1996 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1997 * redirect */ 1998 iopb->errno = iopb->done = iopb->errs = 0; 1999 iopb->scnt = 1; 2000 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2001 /* second to last acyl */ 2002 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2003 * standard */ 2004 iopb->head = i / iorq->xy->nhead; 2005 iopb->sect = i % iorq->xy->nhead; 2006 /* will resubmit when we come out of remove_iorq */ 2007 return (XY_ERR_AOK); /* recovered! */ 2008 } 2009 #endif 2010 } 2011 2012 /* 2013 * it isn't a bad144 sector, must be real error! see if we can retry 2014 * it? 2015 */ 2016 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2017 xyc_perror(iorq, iopb, 1); /* inform of error state 2018 * change */ 2019 iorq->lasterror = errno; 2020 2021 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2022 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2023 iorq->tries++; 2024 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2025 /* will resubmit at end of remove_iorq */ 2026 return (XY_ERR_AOK); /* recovered! */ 2027 } 2028 2029 /* failed to recover from this error */ 2030 return (XY_ERR_FAIL); 2031 } 2032 2033 /* 2034 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2035 */ 2036 void 2037 xyc_tick(arg) 2038 void *arg; 2039 2040 { 2041 struct xyc_softc *xycsc = arg; 2042 int lcv, s, reset = 0; 2043 2044 /* reduce ttl for each request if one goes to zero, reset xyc */ 2045 s = splbio(); 2046 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2047 if (xycsc->reqs[lcv].mode == 0 || 2048 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2049 continue; 2050 xycsc->reqs[lcv].ttl--; 2051 if (xycsc->reqs[lcv].ttl == 0) 2052 reset = 1; 2053 } 2054 if (reset) { 2055 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2056 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2057 } 2058 splx(s); 2059 2060 /* until next time */ 2061 2062 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2063 } 2064 2065 /* 2066 * xyc_ioctlcmd: this function provides a user level interface to the 2067 * controller via ioctl. this allows "format" programs to be written 2068 * in user code, and is also useful for some debugging. we return 2069 * an error code. called at user priority. 2070 * 2071 * XXX missing a few commands (see the 7053 driver for ideas) 2072 */ 2073 int 2074 xyc_ioctlcmd(xy, dev, xio) 2075 struct xy_softc *xy; 2076 dev_t dev; 2077 struct xd_iocmd *xio; 2078 2079 { 2080 int s, rqno, dummy = 0; 2081 caddr_t dvmabuf = NULL, buf = NULL; 2082 struct xyc_softc *xycsc; 2083 int rseg, error; 2084 bus_dma_segment_t seg; 2085 2086 /* check sanity of requested command */ 2087 2088 switch (xio->cmd) { 2089 2090 case XYCMD_NOP: /* no op: everything should be zero */ 2091 if (xio->subfn || xio->dptr || xio->dlen || 2092 xio->block || xio->sectcnt) 2093 return (EINVAL); 2094 break; 2095 2096 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2097 case XYCMD_WR: 2098 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2099 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2100 return (EINVAL); 2101 break; 2102 2103 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2104 return (EINVAL); 2105 2106 break; 2107 2108 default: 2109 return (EINVAL);/* ??? */ 2110 } 2111 2112 xycsc = xy->parent; 2113 2114 /* create DVMA buffer for request if needed */ 2115 if (xio->dlen) { 2116 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2117 &seg, 1, &rseg, BUS_DMA_WAITOK); 2118 if (error) { 2119 return (error); 2120 } 2121 dvmabuf = (caddr_t)seg.ds_addr; 2122 2123 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2124 &buf, 2125 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2126 if (error) { 2127 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2128 return (error); 2129 } 2130 if (xio->cmd == XYCMD_WR) { 2131 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2132 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2133 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2134 return (error); 2135 } 2136 } 2137 } 2138 /* do it! */ 2139 2140 error = 0; 2141 s = splbio(); 2142 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2143 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2144 if (rqno == XY_ERR_FAIL) { 2145 error = EIO; 2146 goto done; 2147 } 2148 xio->errno = xycsc->ciorq->errno; 2149 xio->tries = xycsc->ciorq->tries; 2150 XYC_DONE(xycsc, dummy); 2151 2152 if (xio->cmd == XYCMD_RD) 2153 error = copyout(buf, xio->dptr, xio->dlen); 2154 2155 done: 2156 splx(s); 2157 if (dvmabuf) { 2158 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2159 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2160 } 2161 return (error); 2162 } 2163 2164 /* 2165 * xyc_e2str: convert error code number into an error string 2166 */ 2167 char * 2168 xyc_e2str(no) 2169 int no; 2170 { 2171 switch (no) { 2172 case XY_ERR_FAIL: 2173 return ("Software fatal error"); 2174 case XY_ERR_DERR: 2175 return ("DOUBLE ERROR"); 2176 case XY_ERR_AOK: 2177 return ("Successful completion"); 2178 case XY_ERR_IPEN: 2179 return("Interrupt pending"); 2180 case XY_ERR_BCFL: 2181 return("Busy conflict"); 2182 case XY_ERR_TIMO: 2183 return("Operation timeout"); 2184 case XY_ERR_NHDR: 2185 return("Header not found"); 2186 case XY_ERR_HARD: 2187 return("Hard ECC error"); 2188 case XY_ERR_ICYL: 2189 return("Illegal cylinder address"); 2190 case XY_ERR_ISEC: 2191 return("Illegal sector address"); 2192 case XY_ERR_SMAL: 2193 return("Last sector too small"); 2194 case XY_ERR_SACK: 2195 return("Slave ACK error (non-existent memory)"); 2196 case XY_ERR_CHER: 2197 return("Cylinder and head/header error"); 2198 case XY_ERR_SRTR: 2199 return("Auto-seek retry successful"); 2200 case XY_ERR_WPRO: 2201 return("Write-protect error"); 2202 case XY_ERR_UIMP: 2203 return("Unimplemented command"); 2204 case XY_ERR_DNRY: 2205 return("Drive not ready"); 2206 case XY_ERR_SZER: 2207 return("Sector count zero"); 2208 case XY_ERR_DFLT: 2209 return("Drive faulted"); 2210 case XY_ERR_ISSZ: 2211 return("Illegal sector size"); 2212 case XY_ERR_SLTA: 2213 return("Self test A"); 2214 case XY_ERR_SLTB: 2215 return("Self test B"); 2216 case XY_ERR_SLTC: 2217 return("Self test C"); 2218 case XY_ERR_SOFT: 2219 return("Soft ECC error"); 2220 case XY_ERR_SFOK: 2221 return("Soft ECC error recovered"); 2222 case XY_ERR_IHED: 2223 return("Illegal head"); 2224 case XY_ERR_DSEQ: 2225 return("Disk sequencer error"); 2226 case XY_ERR_SEEK: 2227 return("Seek error"); 2228 default: 2229 return ("Unknown error"); 2230 } 2231 } 2232 2233 int 2234 xyc_entoact(errno) 2235 2236 int errno; 2237 2238 { 2239 switch (errno) { 2240 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2241 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2242 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2243 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2244 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2245 2246 return(XY_ERA_PROG); /* program error ! */ 2247 2248 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2249 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2250 case XY_ERR_SOFT: 2251 2252 return(XY_ERA_HARD); /* hard error, retry */ 2253 2254 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2255 2256 return(XY_ERA_RSET); /* hard error reset */ 2257 2258 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2259 2260 return(XY_ERA_SOFT); /* an FYI error */ 2261 2262 case XY_ERR_WPRO: 2263 2264 return(XY_ERA_WPRO); /* write protect */ 2265 } 2266 2267 return(XY_ERA_PROG); /* ??? */ 2268 } 2269
Indexes created Tue Sep 30 11:09:46 GMT 2025