xy.c revision 1.16
1 /* $NetBSD: xy.c,v 1.16 2000/02/07 20:16:58 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 * 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 BUFQ_INIT(&xy->xyq); 557 558 xy->xyrq = &xyc->reqs[xa->driveno]; 559 560 } 561 xy->xy_drive = xa->driveno; 562 fmode = xa->fullmode; 563 xyc->sc_drives[xa->driveno] = xy; 564 565 /* if not booting, make sure we are the only process in the attach for 566 * this drive. if locked out, sleep on it. */ 567 568 if (!xa->booting) { 569 s = splbio(); 570 while (xy->state == XY_DRIVE_ATTACHING) { 571 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 572 splx(s); 573 return; 574 } 575 } 576 printf("%s at %s", 577 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 578 } 579 580 /* we now have control */ 581 xy->state = XY_DRIVE_ATTACHING; 582 newstate = XY_DRIVE_UNKNOWN; 583 584 buf = NULL; 585 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 586 &seg, 1, &rseg, BUS_DMA_NOWAIT); 587 if (error) { 588 printf("%s: DMA buffer alloc error %d\n", 589 xy->sc_dev.dv_xname, error); 590 goto done; 591 } 592 dmaddr = (caddr_t)seg.ds_addr; 593 594 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 595 &buf, 596 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 597 if (error) { 598 printf("%s: DMA buffer alloc error %d\n", 599 xy->sc_dev.dv_xname, error); 600 bus_dmamem_free(xyc->dmatag, &seg, rseg); 601 goto done; 602 } 603 604 605 /* first try and reset the drive */ 606 607 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 608 XYC_DONE(xyc, error); 609 if (error == XY_ERR_DNRY) { 610 printf(" drive %d: off-line\n", xa->driveno); 611 goto done; 612 } 613 if (error) { 614 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 615 goto done; 616 } 617 printf(" drive %d: ready", xa->driveno); 618 619 /* 620 * now set drive parameters (to semi-bogus values) so we can read the 621 * disk label. 622 */ 623 xy->pcyl = xy->ncyl = 1; 624 xy->acyl = 0; 625 xy->nhead = 1; 626 xy->nsect = 1; 627 xy->sectpercyl = 1; 628 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 629 xy->dkb.bt_bad[lcv].bt_cyl = 630 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 631 632 /* read disk label */ 633 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 634 xy->drive_type++) { 635 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 636 dmaddr, fmode); 637 XYC_DONE(xyc, error); 638 if (error == XY_ERR_AOK) break; 639 } 640 641 if (error != XY_ERR_AOK) { 642 printf("\n%s: reading disk label failed: %s\n", 643 xy->sc_dev.dv_xname, xyc_e2str(error)); 644 goto done; 645 } 646 printf(" (drive type %d)\n", xy->drive_type); 647 648 newstate = XY_DRIVE_NOLABEL; 649 650 xy->hw_spt = spt = 0; /* XXX needed ? */ 651 /* Attach the disk: must be before getdisklabel to malloc label */ 652 disk_attach(&xy->sc_dk); 653 654 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 655 goto done; 656 657 /* inform the user of what is up */ 658 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 659 buf, xy->pcyl); 660 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 661 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 662 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 663 XYFM_BPS); 664 665 /* 666 * 450/451 stupidity: the drive type is encoded into the format 667 * of the disk. the drive type in the IOPB must match the drive 668 * type in the format, or you will not be able to do I/O to the 669 * disk (you get header not found errors). if you have two drives 670 * of different sizes that have the same drive type in their 671 * formatting then you are out of luck. 672 * 673 * this problem was corrected in the 753/7053. 674 */ 675 676 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 677 oxy = xyc->sc_drives[lcv]; 678 if (oxy == NULL || oxy == xy) continue; 679 if (oxy->drive_type != xy->drive_type) continue; 680 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 681 xy->nhead != oxy->nhead) { 682 printf("%s: %s and %s must be the same size!\n", 683 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 684 oxy->sc_dev.dv_xname); 685 panic("xy drive size mismatch"); 686 } 687 } 688 689 690 /* now set the real drive parameters! */ 691 692 blk = (xy->nsect - 1) + 693 ((xy->nhead - 1) * xy->nsect) + 694 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 695 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 696 XYC_DONE(xyc, error); 697 if (error) { 698 printf("%s: write drive size failed: %s\n", 699 xy->sc_dev.dv_xname, xyc_e2str(error)); 700 goto done; 701 } 702 newstate = XY_DRIVE_ONLINE; 703 704 /* 705 * read bad144 table. this table resides on the first sector of the 706 * last track of the disk (i.e. second cyl of "acyl" area). 707 */ 708 709 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 710 /* last cyl */ 711 (xy->nhead - 1) * xy->nsect; /* last head */ 712 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 713 dmaddr, fmode); 714 XYC_DONE(xyc, error); 715 if (error) { 716 printf("%s: reading bad144 failed: %s\n", 717 xy->sc_dev.dv_xname, xyc_e2str(error)); 718 goto done; 719 } 720 721 /* check dkbad for sanity */ 722 dkb = (struct dkbad *) buf; 723 for (lcv = 0; lcv < 126; lcv++) { 724 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 725 dkb->bt_bad[lcv].bt_cyl == 0) && 726 dkb->bt_bad[lcv].bt_trksec == 0xffff) 727 continue; /* blank */ 728 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 729 break; 730 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 731 break; 732 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 733 break; 734 } 735 if (lcv != 126) { 736 printf("%s: warning: invalid bad144 sector!\n", 737 xy->sc_dev.dv_xname); 738 } else { 739 bcopy(buf, &xy->dkb, XYFM_BPS); 740 } 741 742 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 743 744 done: 745 if (buf != NULL) { 746 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 747 bus_dmamem_free(xyc->dmatag, &seg, rseg); 748 } 749 750 xy->state = newstate; 751 if (!xa->booting) { 752 wakeup(&xy->state); 753 splx(s); 754 } 755 } 756 757 /* 758 * end of autoconfig functions 759 */ 760 761 /* 762 * { b , c } d e v s w f u n c t i o n s 763 */ 764 765 /* 766 * xyclose: close device 767 */ 768 int 769 xyclose(dev, flag, fmt, p) 770 dev_t dev; 771 int flag, fmt; 772 struct proc *p; 773 774 { 775 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 776 int part = DISKPART(dev); 777 778 /* clear mask bits */ 779 780 switch (fmt) { 781 case S_IFCHR: 782 xy->sc_dk.dk_copenmask &= ~(1 << part); 783 break; 784 case S_IFBLK: 785 xy->sc_dk.dk_bopenmask &= ~(1 << part); 786 break; 787 } 788 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 789 790 return 0; 791 } 792 793 /* 794 * xydump: crash dump system 795 */ 796 int 797 xydump(dev, blkno, va, size) 798 dev_t dev; 799 daddr_t blkno; 800 caddr_t va; 801 size_t size; 802 { 803 int unit, part; 804 struct xy_softc *xy; 805 806 unit = DISKUNIT(dev); 807 if (unit >= xy_cd.cd_ndevs) 808 return ENXIO; 809 part = DISKPART(dev); 810 811 xy = xy_cd.cd_devs[unit]; 812 813 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 814 'a' + part); 815 816 return ENXIO; 817 818 /* outline: globals: "dumplo" == sector number of partition to start 819 * dump at (convert to physical sector with partition table) 820 * "dumpsize" == size of dump in clicks "physmem" == size of physical 821 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 822 * physmem) 823 * 824 * dump a copy of physical memory to the dump device starting at sector 825 * "dumplo" in the swap partition (make sure > 0). map in pages as 826 * we go. use polled I/O. 827 * 828 * XXX how to handle NON_CONTIG? */ 829 830 } 831 832 /* 833 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 834 */ 835 int 836 xyioctl(dev, command, addr, flag, p) 837 dev_t dev; 838 u_long command; 839 caddr_t addr; 840 int flag; 841 struct proc *p; 842 843 { 844 struct xy_softc *xy; 845 struct xd_iocmd *xio; 846 int error, s, unit; 847 848 unit = DISKUNIT(dev); 849 850 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 851 return (ENXIO); 852 853 /* switch on ioctl type */ 854 855 switch (command) { 856 case DIOCSBAD: /* set bad144 info */ 857 if ((flag & FWRITE) == 0) 858 return EBADF; 859 s = splbio(); 860 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 861 splx(s); 862 return 0; 863 864 case DIOCGDINFO: /* get disk label */ 865 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 866 return 0; 867 868 case DIOCGPART: /* get partition info */ 869 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 870 ((struct partinfo *) addr)->part = 871 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 872 return 0; 873 874 case DIOCSDINFO: /* set disk label */ 875 if ((flag & FWRITE) == 0) 876 return EBADF; 877 error = setdisklabel(xy->sc_dk.dk_label, 878 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 879 xy->sc_dk.dk_cpulabel); 880 if (error == 0) { 881 if (xy->state == XY_DRIVE_NOLABEL) 882 xy->state = XY_DRIVE_ONLINE; 883 } 884 return error; 885 886 case DIOCWLABEL: /* change write status of disk label */ 887 if ((flag & FWRITE) == 0) 888 return EBADF; 889 if (*(int *) addr) 890 xy->flags |= XY_WLABEL; 891 else 892 xy->flags &= ~XY_WLABEL; 893 return 0; 894 895 case DIOCWDINFO: /* write disk label */ 896 if ((flag & FWRITE) == 0) 897 return EBADF; 898 error = setdisklabel(xy->sc_dk.dk_label, 899 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 900 xy->sc_dk.dk_cpulabel); 901 if (error == 0) { 902 if (xy->state == XY_DRIVE_NOLABEL) 903 xy->state = XY_DRIVE_ONLINE; 904 905 /* Simulate opening partition 0 so write succeeds. */ 906 xy->sc_dk.dk_openmask |= (1 << 0); 907 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 908 xystrategy, xy->sc_dk.dk_label, 909 xy->sc_dk.dk_cpulabel); 910 xy->sc_dk.dk_openmask = 911 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 912 } 913 return error; 914 915 case DIOSXDCMD: 916 xio = (struct xd_iocmd *) addr; 917 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 918 return (error); 919 return (xyc_ioctlcmd(xy, dev, xio)); 920 921 default: 922 return ENOTTY; 923 } 924 } 925 926 /* 927 * xyopen: open drive 928 */ 929 930 int 931 xyopen(dev, flag, fmt, p) 932 dev_t dev; 933 int flag, fmt; 934 struct proc *p; 935 { 936 int unit, part; 937 struct xy_softc *xy; 938 struct xyc_attach_args xa; 939 940 /* first, could it be a valid target? */ 941 942 unit = DISKUNIT(dev); 943 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 944 return (ENXIO); 945 part = DISKPART(dev); 946 947 /* do we need to attach the drive? */ 948 949 if (xy->state == XY_DRIVE_UNKNOWN) { 950 xa.driveno = xy->xy_drive; 951 xa.fullmode = XY_SUB_WAIT; 952 xa.booting = 0; 953 xyattach((struct device *) xy->parent, 954 (struct device *) xy, &xa); 955 if (xy->state == XY_DRIVE_UNKNOWN) { 956 return (EIO); 957 } 958 } 959 /* check for partition */ 960 961 if (part != RAW_PART && 962 (part >= xy->sc_dk.dk_label->d_npartitions || 963 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 964 return (ENXIO); 965 } 966 /* set open masks */ 967 968 switch (fmt) { 969 case S_IFCHR: 970 xy->sc_dk.dk_copenmask |= (1 << part); 971 break; 972 case S_IFBLK: 973 xy->sc_dk.dk_bopenmask |= (1 << part); 974 break; 975 } 976 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 977 978 return 0; 979 } 980 981 int 982 xyread(dev, uio, flags) 983 dev_t dev; 984 struct uio *uio; 985 int flags; 986 { 987 988 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 989 } 990 991 int 992 xywrite(dev, uio, flags) 993 dev_t dev; 994 struct uio *uio; 995 int flags; 996 { 997 998 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 999 } 1000 1001 1002 /* 1003 * xysize: return size of a partition for a dump 1004 */ 1005 1006 int 1007 xysize(dev) 1008 dev_t dev; 1009 1010 { 1011 struct xy_softc *xysc; 1012 int unit, part, size, omask; 1013 1014 /* valid unit? */ 1015 unit = DISKUNIT(dev); 1016 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1017 return (-1); 1018 1019 part = DISKPART(dev); 1020 omask = xysc->sc_dk.dk_openmask & (1 << part); 1021 1022 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1023 return (-1); 1024 1025 /* do it */ 1026 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1027 size = -1; /* only give valid size for swap partitions */ 1028 else 1029 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1030 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1031 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1032 return (-1); 1033 return (size); 1034 } 1035 1036 /* 1037 * xystrategy: buffering system interface to xy. 1038 */ 1039 1040 void 1041 xystrategy(bp) 1042 struct buf *bp; 1043 1044 { 1045 struct xy_softc *xy; 1046 int s, unit; 1047 struct xyc_attach_args xa; 1048 struct disklabel *lp; 1049 daddr_t blkno; 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 lp = xy->sc_dk.dk_label; 1089 1090 if (bounds_check_with_label(bp, lp, 1091 (xy->flags & XY_WLABEL) != 0) <= 0) 1092 goto done; 1093 1094 /* 1095 * Now convert the block number to absolute and put it in 1096 * terms of the device's logical block size. 1097 */ 1098 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1099 if (DISKPART(bp->b_dev) != RAW_PART) 1100 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1101 1102 bp->b_rawblkno = blkno; 1103 1104 /* 1105 * now we know we have a valid buf structure that we need to do I/O 1106 * on. 1107 */ 1108 s = splbio(); /* protect the queues */ 1109 1110 disksort_blkno(&xy->xyq, bp); 1111 1112 /* start 'em up */ 1113 1114 xyc_start(xy->parent, NULL); 1115 1116 /* done! */ 1117 1118 splx(s); 1119 return; 1120 1121 bad: /* tells upper layers we have an error */ 1122 bp->b_flags |= B_ERROR; 1123 done: /* tells upper layers we are done with this 1124 * buf */ 1125 bp->b_resid = bp->b_bcount; 1126 biodone(bp); 1127 } 1128 /* 1129 * end of {b,c}devsw functions 1130 */ 1131 1132 /* 1133 * i n t e r r u p t f u n c t i o n 1134 * 1135 * xycintr: hardware interrupt. 1136 */ 1137 int 1138 xycintr(v) 1139 void *v; 1140 1141 { 1142 struct xyc_softc *xycsc = v; 1143 1144 /* kick the event counter */ 1145 1146 xycsc->sc_intrcnt.ev_count++; 1147 1148 /* remove as many done IOPBs as possible */ 1149 1150 xyc_remove_iorq(xycsc); 1151 1152 /* start any iorq's already waiting */ 1153 1154 xyc_start(xycsc, NULL); 1155 1156 return (1); 1157 } 1158 /* 1159 * end of interrupt function 1160 */ 1161 1162 /* 1163 * i n t e r n a l f u n c t i o n s 1164 */ 1165 1166 /* 1167 * xyc_rqinit: fill out the fields of an I/O request 1168 */ 1169 1170 inline void 1171 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1172 struct xy_iorq *rq; 1173 struct xyc_softc *xyc; 1174 struct xy_softc *xy; 1175 int md; 1176 u_long blk; 1177 int cnt; 1178 caddr_t db; 1179 struct buf *bp; 1180 { 1181 rq->xyc = xyc; 1182 rq->xy = xy; 1183 rq->ttl = XYC_MAXTTL + 10; 1184 rq->mode = md; 1185 rq->tries = rq->errno = rq->lasterror = 0; 1186 rq->blockno = blk; 1187 rq->sectcnt = cnt; 1188 rq->dbuf = db; 1189 rq->buf = bp; 1190 } 1191 1192 /* 1193 * xyc_rqtopb: load up an IOPB based on an iorq 1194 */ 1195 1196 void 1197 xyc_rqtopb(iorq, iopb, cmd, subfun) 1198 struct xy_iorq *iorq; 1199 struct xy_iopb *iopb; 1200 int cmd, subfun; 1201 1202 { 1203 u_long block, dp; 1204 1205 /* normal IOPB case, standard stuff */ 1206 1207 /* chain bit handled later */ 1208 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1209 iopb->com = cmd; 1210 iopb->errno = 0; 1211 iopb->errs = 0; 1212 iopb->done = 0; 1213 if (iorq->xy) { 1214 iopb->unit = iorq->xy->xy_drive; 1215 iopb->dt = iorq->xy->drive_type; 1216 } else { 1217 iopb->unit = 0; 1218 iopb->dt = 0; 1219 } 1220 block = iorq->blockno; 1221 if (iorq->xy == NULL || block == 0) { 1222 iopb->sect = iopb->head = iopb->cyl = 0; 1223 } else { 1224 iopb->sect = block % iorq->xy->nsect; 1225 block = block / iorq->xy->nsect; 1226 iopb->head = block % iorq->xy->nhead; 1227 block = block / iorq->xy->nhead; 1228 iopb->cyl = block; 1229 } 1230 iopb->scnt = iorq->sectcnt; 1231 dp = (u_long) iorq->dbuf; 1232 if (iorq->dbuf == NULL) { 1233 iopb->dataa = 0; 1234 iopb->datar = 0; 1235 } else { 1236 iopb->dataa = (dp & 0xffff); 1237 iopb->datar = ((dp & 0xff0000) >> 16); 1238 } 1239 iopb->subfn = subfun; 1240 } 1241 1242 1243 /* 1244 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1245 */ 1246 1247 int 1248 xyc_unbusy(xyc, del) 1249 1250 struct xyc *xyc; 1251 int del; 1252 1253 { 1254 while (del-- > 0) { 1255 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1256 break; 1257 DELAY(1); 1258 } 1259 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1260 } 1261 1262 /* 1263 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1264 * note that NORM requests are handled seperately. 1265 */ 1266 int 1267 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1268 struct xyc_softc *xycsc; 1269 int cmd, subfn, unit, block, scnt; 1270 char *dptr; 1271 int fullmode; 1272 1273 { 1274 int submode = XY_STATE(fullmode); 1275 struct xy_iorq *iorq = xycsc->ciorq; 1276 struct xy_iopb *iopb = xycsc->ciopb; 1277 1278 /* 1279 * is someone else using the control iopq wait for it if we can 1280 */ 1281 start: 1282 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1283 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1284 return(XY_ERR_FAIL); 1285 goto start; 1286 } 1287 1288 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1289 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1290 iorq->mode = XY_SUB_FREE; 1291 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1292 } 1293 1294 /* init iorq/iopb */ 1295 1296 xyc_rqinit(iorq, xycsc, 1297 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1298 fullmode, block, scnt, dptr, NULL); 1299 1300 /* load IOPB from iorq */ 1301 1302 xyc_rqtopb(iorq, iopb, cmd, subfn); 1303 1304 /* submit it for processing */ 1305 1306 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1307 1308 return(XY_ERR_AOK); 1309 } 1310 1311 /* 1312 * xyc_startbuf 1313 * start a buffer for running 1314 */ 1315 1316 int 1317 xyc_startbuf(xycsc, xysc, bp) 1318 struct xyc_softc *xycsc; 1319 struct xy_softc *xysc; 1320 struct buf *bp; 1321 1322 { 1323 int partno, error; 1324 struct xy_iorq *iorq; 1325 struct xy_iopb *iopb; 1326 u_long block; 1327 1328 iorq = xysc->xyrq; 1329 iopb = iorq->iopb; 1330 1331 /* get buf */ 1332 1333 if (bp == NULL) 1334 panic("xyc_startbuf null buf"); 1335 1336 partno = DISKPART(bp->b_dev); 1337 #ifdef XYC_DEBUG 1338 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1339 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1340 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1341 bp->b_bcount, bp->b_data); 1342 #endif 1343 1344 /* 1345 * load request. 1346 * 1347 * note that iorq points to the buffer as mapped into DVMA space, 1348 * where as the bp->b_data points to its non-DVMA mapping. 1349 */ 1350 1351 block = bp->b_rawblkno; 1352 1353 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1354 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1355 if (error != 0) { 1356 printf("%s: warning: cannot load DMA map\n", 1357 xycsc->sc_dev.dv_xname); 1358 return (XY_ERR_FAIL); /* XXX: need some sort of 1359 * call-back scheme here? */ 1360 } 1361 1362 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1363 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1364 ? BUS_DMASYNC_PREREAD 1365 : BUS_DMASYNC_PREWRITE); 1366 1367 /* init iorq and load iopb from it */ 1368 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1369 bp->b_bcount / XYFM_BPS, 1370 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1371 bp); 1372 1373 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1374 1375 /* Instrumentation. */ 1376 disk_busy(&xysc->sc_dk); 1377 1378 return (XY_ERR_AOK); 1379 } 1380 1381 1382 /* 1383 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1384 * if ok. if it fail returns an error code. type is XY_SUB_*. 1385 * 1386 * note: caller frees iorq in all cases except NORM 1387 * 1388 * return value: 1389 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1390 * WAIT: XY_AOK (success), <error-code> (failed) 1391 * POLL: <same as WAIT> 1392 * NOQ : <same as NORM> 1393 * 1394 * there are three sources for i/o requests: 1395 * [1] xystrategy: normal block I/O, using "struct buf" system. 1396 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1397 * [3] open/ioctl: these are I/O requests done in the context of a process, 1398 * and the process should block until they are done. 1399 * 1400 * software state is stored in the iorq structure. each iorq has an 1401 * iopb structure. the hardware understands the iopb structure. 1402 * every command must go through an iopb. a 450 handles one iopb at a 1403 * time, where as a 451 can take them in chains. [the 450 claims it 1404 * can handle chains, but is appears to be buggy...] iopb are allocated 1405 * in DVMA space at boot up time. each disk gets one iopb, and the 1406 * controller gets one (for POLL and WAIT commands). what happens if 1407 * the iopb is busy? for i/o type [1], the buffers are queued at the 1408 * "buff" layer and * picked up later by the interrupt routine. for case 1409 * [2] we can only be blocked if there is a WAIT type I/O request being 1410 * run. since this can only happen when we are crashing, we wait a sec 1411 * and then steal the IOPB. for case [3] the process can sleep 1412 * on the iorq free list until some iopbs are avaliable. 1413 */ 1414 1415 1416 int 1417 xyc_submit_iorq(xycsc, iorq, type) 1418 struct xyc_softc *xycsc; 1419 struct xy_iorq *iorq; 1420 int type; 1421 1422 { 1423 struct xy_iopb *dmaiopb; 1424 1425 #ifdef XYC_DEBUG 1426 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1427 xycsc->sc_dev.dv_xname, iorq, type); 1428 #endif 1429 1430 /* first check and see if controller is busy */ 1431 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1432 #ifdef XYC_DEBUG 1433 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1434 #endif 1435 if (type == XY_SUB_NOQ) 1436 return (XY_ERR_FAIL); /* failed */ 1437 switch (type) { 1438 case XY_SUB_NORM: 1439 return XY_ERR_AOK; /* success */ 1440 case XY_SUB_WAIT: 1441 while (iorq->iopb->done == 0) { 1442 sleep(iorq, PRIBIO); 1443 } 1444 return (iorq->errno); 1445 case XY_SUB_POLL: /* steal controller */ 1446 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1447 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1448 panic("xyc_submit_iorq: stuck xyc"); 1449 printf("%s: stole controller\n", 1450 xycsc->sc_dev.dv_xname); 1451 break; 1452 default: 1453 panic("xyc_submit_iorq adding"); 1454 } 1455 } 1456 1457 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1458 if (dmaiopb == NULL) { /* nothing doing? */ 1459 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1460 return(XY_ERR_AOK); 1461 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1462 } 1463 1464 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1465 1466 /* command now running, wrap it up */ 1467 switch (type) { 1468 case XY_SUB_NORM: 1469 case XY_SUB_NOQ: 1470 return (XY_ERR_AOK); /* success */ 1471 case XY_SUB_WAIT: 1472 while (iorq->iopb->done == 0) { 1473 sleep(iorq, PRIBIO); 1474 } 1475 return (iorq->errno); 1476 case XY_SUB_POLL: 1477 return (xyc_piodriver(xycsc, iorq)); 1478 default: 1479 panic("xyc_submit_iorq wrap up"); 1480 } 1481 panic("xyc_submit_iorq"); 1482 return 0; /* not reached */ 1483 } 1484 1485 1486 /* 1487 * xyc_chain: build a chain. return dvma address of first element in 1488 * the chain. iorq != NULL: means we only want that item on the chain. 1489 */ 1490 1491 struct xy_iopb * 1492 xyc_chain(xycsc, iorq) 1493 struct xyc_softc *xycsc; 1494 struct xy_iorq *iorq; 1495 1496 { 1497 int togo, chain, hand; 1498 1499 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1500 1501 /* 1502 * promote control IOPB to the top 1503 */ 1504 if (iorq == NULL) { 1505 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1506 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1507 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1508 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1509 } 1510 1511 /* 1512 * special case: if iorq != NULL then we have a POLL or WAIT request. 1513 * we let these take priority and do them first. 1514 */ 1515 if (iorq) { 1516 xycsc->xy_chain[0] = iorq; 1517 iorq->iopb->chen = 0; 1518 return(iorq->dmaiopb); 1519 } 1520 1521 /* 1522 * NORM case: do round robin and maybe chain (if allowed and possible) 1523 */ 1524 chain = 0; 1525 hand = xycsc->xy_hand; 1526 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1527 1528 for (togo = XYC_MAXIOPB; togo > 0; 1529 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1530 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1531 1532 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1533 xycsc->iopbase[hand].done) 1534 continue; /* not ready-for-i/o */ 1535 1536 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1537 iopb = xycsc->xy_chain[chain]->iopb; 1538 iopb->chen = 0; 1539 if (chain != 0) { 1540 /* adding a link to a chain */ 1541 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1542 prev_iopb->chen = 1; 1543 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1544 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1545 } else { 1546 /* head of chain */ 1547 iorq = xycsc->xy_chain[chain]; 1548 } 1549 chain++; 1550 1551 /* quit if chaining dis-allowed */ 1552 if (xycsc->no_ols) 1553 break; 1554 } 1555 1556 return(iorq ? iorq->dmaiopb : NULL); 1557 } 1558 1559 /* 1560 * xyc_piodriver 1561 * 1562 * programmed i/o driver. this function takes over the computer 1563 * and drains off the polled i/o request. it returns the status of the iorq 1564 * the caller is interesting in. 1565 */ 1566 int 1567 xyc_piodriver(xycsc, iorq) 1568 struct xyc_softc *xycsc; 1569 struct xy_iorq *iorq; 1570 1571 { 1572 int nreset = 0; 1573 int retval = 0; 1574 u_long res; 1575 #ifdef XYC_DEBUG 1576 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1577 #endif 1578 1579 while (iorq->iopb->done == 0) { 1580 1581 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1582 1583 /* we expect some progress soon */ 1584 if (res == XY_ERR_FAIL && nreset >= 2) { 1585 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1586 #ifdef XYC_DEBUG 1587 printf("xyc_piodriver: timeout\n"); 1588 #endif 1589 return (XY_ERR_FAIL); 1590 } 1591 if (res == XY_ERR_FAIL) { 1592 if (xyc_reset(xycsc, 0, 1593 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1594 XY_ERR_FAIL, 1595 0) == XY_ERR_FAIL) 1596 return (XY_ERR_FAIL); /* flushes all but POLL 1597 * requests, resets */ 1598 continue; 1599 } 1600 1601 xyc_remove_iorq(xycsc); /* may resubmit request */ 1602 1603 if (iorq->iopb->done == 0) 1604 xyc_start(xycsc, iorq); 1605 } 1606 1607 /* get return value */ 1608 1609 retval = iorq->errno; 1610 1611 #ifdef XYC_DEBUG 1612 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1613 iorq->errno, xyc_e2str(iorq->errno)); 1614 #endif 1615 1616 /* start up any bufs that have queued */ 1617 1618 xyc_start(xycsc, NULL); 1619 1620 return (retval); 1621 } 1622 1623 /* 1624 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1625 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1626 */ 1627 void 1628 xyc_xyreset(xycsc, xysc) 1629 struct xyc_softc *xycsc; 1630 struct xy_softc *xysc; 1631 1632 { 1633 struct xy_iopb tmpiopb; 1634 struct xy_iopb *iopb; 1635 int del; 1636 1637 iopb = xycsc->ciopb; 1638 1639 /* Save contents */ 1640 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1641 1642 iopb->chen = iopb->done = iopb->errs = 0; 1643 iopb->ien = 0; 1644 iopb->com = XYCMD_RST; 1645 iopb->unit = xysc->xy_drive; 1646 1647 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1648 1649 del = XYC_RESETUSEC; 1650 while (del > 0) { 1651 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1652 break; 1653 DELAY(1); 1654 del--; 1655 } 1656 1657 if (del <= 0 || iopb->errs) { 1658 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1659 xyc_e2str(iopb->errno)); 1660 del = xycsc->xyc->xyc_rsetup; 1661 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1662 panic("xyc_reset"); 1663 } else { 1664 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1665 } 1666 1667 /* Restore contents */ 1668 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1669 } 1670 1671 1672 /* 1673 * xyc_reset: reset everything: requests are marked as errors except 1674 * a polled request (which is resubmitted) 1675 */ 1676 int 1677 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1678 struct xyc_softc *xycsc; 1679 int quiet, error; 1680 struct xy_iorq *blastmode; 1681 struct xy_softc *xysc; 1682 1683 { 1684 int del = 0, lcv, retval = XY_ERR_AOK; 1685 1686 /* soft reset hardware */ 1687 1688 if (!quiet) 1689 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1690 del = xycsc->xyc->xyc_rsetup; 1691 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1692 if (del == XY_ERR_FAIL) { 1693 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1694 retval = XY_ERR_FAIL; 1695 } 1696 if (xysc) 1697 xyc_xyreset(xycsc, xysc); 1698 1699 /* fix queues based on "blast-mode" */ 1700 1701 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1702 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1703 1704 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1705 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1706 XY_STATE(iorq->mode) != XY_SUB_NORM) 1707 /* is it active? */ 1708 continue; 1709 1710 if (blastmode == XY_RSET_ALL || 1711 blastmode != iorq) { 1712 /* failed */ 1713 iorq->errno = error; 1714 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1715 switch (XY_STATE(iorq->mode)) { 1716 case XY_SUB_NORM: 1717 iorq->buf->b_error = EIO; 1718 iorq->buf->b_flags |= B_ERROR; 1719 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1720 1721 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1722 iorq->dmamap->dm_mapsize, 1723 (iorq->buf->b_flags & B_READ) 1724 ? BUS_DMASYNC_POSTREAD 1725 : BUS_DMASYNC_POSTWRITE); 1726 1727 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1728 1729 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1730 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1731 (xycsc->reqs[lcv].buf->b_bcount - 1732 xycsc->reqs[lcv].buf->b_resid)); 1733 biodone(iorq->buf); 1734 iorq->mode = XY_SUB_FREE; 1735 break; 1736 case XY_SUB_WAIT: 1737 wakeup(iorq); 1738 case XY_SUB_POLL: 1739 iorq->mode = 1740 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1741 break; 1742 } 1743 1744 } else { 1745 1746 /* resubmit, no need to do anything here */ 1747 } 1748 } 1749 1750 /* 1751 * now, if stuff is waiting, start it. 1752 * since we just reset it should go 1753 */ 1754 xyc_start(xycsc, NULL); 1755 1756 return (retval); 1757 } 1758 1759 /* 1760 * xyc_start: start waiting buffers 1761 */ 1762 1763 void 1764 xyc_start(xycsc, iorq) 1765 struct xyc_softc *xycsc; 1766 struct xy_iorq *iorq; 1767 1768 { 1769 int lcv; 1770 struct xy_softc *xy; 1771 1772 if (iorq == NULL) { 1773 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1774 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1775 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1776 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1777 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1778 } 1779 } 1780 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1781 } 1782 1783 /* 1784 * xyc_remove_iorq: remove "done" IOPB's. 1785 */ 1786 1787 int 1788 xyc_remove_iorq(xycsc) 1789 struct xyc_softc *xycsc; 1790 1791 { 1792 int errno, rq, comm, errs; 1793 struct xyc *xyc = xycsc->xyc; 1794 u_long addr; 1795 struct xy_iopb *iopb; 1796 struct xy_iorq *iorq; 1797 struct buf *bp; 1798 1799 if (xyc->xyc_csr & XYC_DERR) { 1800 /* 1801 * DOUBLE ERROR: should never happen under normal use. This 1802 * error is so bad, you can't even tell which IOPB is bad, so 1803 * we dump them all. 1804 */ 1805 errno = XY_ERR_DERR; 1806 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1807 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1808 printf("%s: soft reset failed!\n", 1809 xycsc->sc_dev.dv_xname); 1810 panic("xyc_remove_iorq: controller DEAD"); 1811 } 1812 return (XY_ERR_AOK); 1813 } 1814 1815 /* 1816 * get iopb that is done, loop down the chain 1817 */ 1818 1819 if (xyc->xyc_csr & XYC_ERR) { 1820 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1821 } 1822 if (xyc->xyc_csr & XYC_IPND) { 1823 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1824 } 1825 1826 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1827 iorq = xycsc->xy_chain[rq]; 1828 if (iorq == NULL) break; /* done ! */ 1829 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1830 continue; /* free, or done */ 1831 iopb = iorq->iopb; 1832 if (iopb->done == 0) 1833 continue; /* not done yet */ 1834 1835 comm = iopb->com; 1836 errs = iopb->errs; 1837 1838 if (errs) 1839 iorq->errno = iopb->errno; 1840 else 1841 iorq->errno = 0; 1842 1843 /* handle non-fatal errors */ 1844 1845 if (errs && 1846 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1847 continue; /* AOK: we resubmitted it */ 1848 1849 1850 /* this iorq is now done (hasn't been restarted or anything) */ 1851 1852 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1853 xyc_perror(iorq, iopb, 0); 1854 1855 /* now, if read/write check to make sure we got all the data 1856 * we needed. (this may not be the case if we got an error in 1857 * the middle of a multisector request). */ 1858 1859 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1860 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1861 /* we just successfully processed a bad144 sector 1862 * note: if we are in bad 144 mode, the pointers have 1863 * been advanced already (see above) and are pointing 1864 * at the bad144 sector. to exit bad144 mode, we 1865 * must advance the pointers 1 sector and issue a new 1866 * request if there are still sectors left to process 1867 * 1868 */ 1869 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1870 1871 /* exit b144 mode */ 1872 iorq->mode = iorq->mode & (~XY_MODE_B144); 1873 1874 if (iorq->sectcnt) { /* more to go! */ 1875 iorq->lasterror = iorq->errno = iopb->errno = 0; 1876 iopb->errs = iopb->done = 0; 1877 iorq->tries = 0; 1878 iopb->scnt = iorq->sectcnt; 1879 iopb->cyl = iorq->blockno / 1880 iorq->xy->sectpercyl; 1881 iopb->head = 1882 (iorq->blockno / iorq->xy->nhead) % 1883 iorq->xy->nhead; 1884 iopb->sect = iorq->blockno % XYFM_BPS; 1885 addr = (u_long) iorq->dbuf; 1886 iopb->dataa = (addr & 0xffff); 1887 iopb->datar = ((addr & 0xff0000) >> 16); 1888 /* will resubit at end */ 1889 continue; 1890 } 1891 } 1892 /* final cleanup, totally done with this request */ 1893 1894 switch (XY_STATE(iorq->mode)) { 1895 case XY_SUB_NORM: 1896 bp = iorq->buf; 1897 if (errs) { 1898 bp->b_error = EIO; 1899 bp->b_flags |= B_ERROR; 1900 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1901 } else { 1902 bp->b_resid = 0; /* done */ 1903 } 1904 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1905 iorq->dmamap->dm_mapsize, 1906 (iorq->buf->b_flags & B_READ) 1907 ? BUS_DMASYNC_POSTREAD 1908 : BUS_DMASYNC_POSTWRITE); 1909 1910 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1911 1912 BUFQ_REMOVE(&iorq->xy->xyq, bp); 1913 disk_unbusy(&iorq->xy->sc_dk, 1914 (bp->b_bcount - bp->b_resid)); 1915 iorq->mode = XY_SUB_FREE; 1916 biodone(bp); 1917 break; 1918 case XY_SUB_WAIT: 1919 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1920 wakeup(iorq); 1921 break; 1922 case XY_SUB_POLL: 1923 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1924 break; 1925 } 1926 } 1927 1928 return (XY_ERR_AOK); 1929 } 1930 1931 /* 1932 * xyc_perror: print error. 1933 * - if still_trying is true: we got an error, retried and got a 1934 * different error. in that case lasterror is the old error, 1935 * and errno is the new one. 1936 * - if still_trying is not true, then if we ever had an error it 1937 * is in lasterror. also, if iorq->errno == 0, then we recovered 1938 * from that error (otherwise iorq->errno == iorq->lasterror). 1939 */ 1940 void 1941 xyc_perror(iorq, iopb, still_trying) 1942 struct xy_iorq *iorq; 1943 struct xy_iopb *iopb; 1944 int still_trying; 1945 1946 { 1947 1948 int error = iorq->lasterror; 1949 1950 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1951 : iorq->xyc->sc_dev.dv_xname); 1952 if (iorq->buf) 1953 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1954 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1955 printf("%s %d/%d/%d: ", 1956 (iopb->com == XYCMD_RD) ? "read" : "write", 1957 iopb->cyl, iopb->head, iopb->sect); 1958 printf("%s", xyc_e2str(error)); 1959 1960 if (still_trying) 1961 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1962 else 1963 if (iorq->errno == 0) 1964 printf(" [recovered in %d tries]", iorq->tries); 1965 1966 printf("\n"); 1967 } 1968 1969 /* 1970 * xyc_error: non-fatal error encountered... recover. 1971 * return AOK if resubmitted, return FAIL if this iopb is done 1972 */ 1973 int 1974 xyc_error(xycsc, iorq, iopb, comm) 1975 struct xyc_softc *xycsc; 1976 struct xy_iorq *iorq; 1977 struct xy_iopb *iopb; 1978 int comm; 1979 1980 { 1981 int errno = iorq->errno; 1982 int erract = xyc_entoact(errno); 1983 int oldmode, advance; 1984 #ifdef sparc 1985 int i; 1986 #endif 1987 1988 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1989 oldmode = iorq->mode; 1990 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1991 /* make xyc_start ignore us */ 1992 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1993 iorq->mode = oldmode; 1994 } 1995 /* check for read/write to a sector in bad144 table if bad: redirect 1996 * request to bad144 area */ 1997 1998 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1999 (iorq->mode & XY_MODE_B144) == 0) { 2000 advance = iorq->sectcnt - iopb->scnt; 2001 XYC_ADVANCE(iorq, advance); 2002 #ifdef sparc 2003 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2004 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2005 iorq->blockno % iorq->xy->nsect)) != -1) { 2006 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2007 * redirect */ 2008 iopb->errno = iopb->done = iopb->errs = 0; 2009 iopb->scnt = 1; 2010 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2011 /* second to last acyl */ 2012 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2013 * standard */ 2014 iopb->head = i / iorq->xy->nhead; 2015 iopb->sect = i % iorq->xy->nhead; 2016 /* will resubmit when we come out of remove_iorq */ 2017 return (XY_ERR_AOK); /* recovered! */ 2018 } 2019 #endif 2020 } 2021 2022 /* 2023 * it isn't a bad144 sector, must be real error! see if we can retry 2024 * it? 2025 */ 2026 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2027 xyc_perror(iorq, iopb, 1); /* inform of error state 2028 * change */ 2029 iorq->lasterror = errno; 2030 2031 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2032 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2033 iorq->tries++; 2034 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2035 /* will resubmit at end of remove_iorq */ 2036 return (XY_ERR_AOK); /* recovered! */ 2037 } 2038 2039 /* failed to recover from this error */ 2040 return (XY_ERR_FAIL); 2041 } 2042 2043 /* 2044 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2045 */ 2046 void 2047 xyc_tick(arg) 2048 void *arg; 2049 2050 { 2051 struct xyc_softc *xycsc = arg; 2052 int lcv, s, reset = 0; 2053 2054 /* reduce ttl for each request if one goes to zero, reset xyc */ 2055 s = splbio(); 2056 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2057 if (xycsc->reqs[lcv].mode == 0 || 2058 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2059 continue; 2060 xycsc->reqs[lcv].ttl--; 2061 if (xycsc->reqs[lcv].ttl == 0) 2062 reset = 1; 2063 } 2064 if (reset) { 2065 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2066 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2067 } 2068 splx(s); 2069 2070 /* until next time */ 2071 2072 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2073 } 2074 2075 /* 2076 * xyc_ioctlcmd: this function provides a user level interface to the 2077 * controller via ioctl. this allows "format" programs to be written 2078 * in user code, and is also useful for some debugging. we return 2079 * an error code. called at user priority. 2080 * 2081 * XXX missing a few commands (see the 7053 driver for ideas) 2082 */ 2083 int 2084 xyc_ioctlcmd(xy, dev, xio) 2085 struct xy_softc *xy; 2086 dev_t dev; 2087 struct xd_iocmd *xio; 2088 2089 { 2090 int s, rqno, dummy = 0; 2091 caddr_t dvmabuf = NULL, buf = NULL; 2092 struct xyc_softc *xycsc; 2093 int rseg, error; 2094 bus_dma_segment_t seg; 2095 2096 /* check sanity of requested command */ 2097 2098 switch (xio->cmd) { 2099 2100 case XYCMD_NOP: /* no op: everything should be zero */ 2101 if (xio->subfn || xio->dptr || xio->dlen || 2102 xio->block || xio->sectcnt) 2103 return (EINVAL); 2104 break; 2105 2106 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2107 case XYCMD_WR: 2108 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2109 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2110 return (EINVAL); 2111 break; 2112 2113 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2114 return (EINVAL); 2115 2116 break; 2117 2118 default: 2119 return (EINVAL);/* ??? */ 2120 } 2121 2122 xycsc = xy->parent; 2123 2124 /* create DVMA buffer for request if needed */ 2125 if (xio->dlen) { 2126 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2127 &seg, 1, &rseg, BUS_DMA_WAITOK); 2128 if (error) { 2129 return (error); 2130 } 2131 dvmabuf = (caddr_t)seg.ds_addr; 2132 2133 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2134 &buf, 2135 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2136 if (error) { 2137 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2138 return (error); 2139 } 2140 if (xio->cmd == XYCMD_WR) { 2141 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2142 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2143 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2144 return (error); 2145 } 2146 } 2147 } 2148 /* do it! */ 2149 2150 error = 0; 2151 s = splbio(); 2152 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2153 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2154 if (rqno == XY_ERR_FAIL) { 2155 error = EIO; 2156 goto done; 2157 } 2158 xio->errno = xycsc->ciorq->errno; 2159 xio->tries = xycsc->ciorq->tries; 2160 XYC_DONE(xycsc, dummy); 2161 2162 if (xio->cmd == XYCMD_RD) 2163 error = copyout(buf, xio->dptr, xio->dlen); 2164 2165 done: 2166 splx(s); 2167 if (dvmabuf) { 2168 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2169 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2170 } 2171 return (error); 2172 } 2173 2174 /* 2175 * xyc_e2str: convert error code number into an error string 2176 */ 2177 char * 2178 xyc_e2str(no) 2179 int no; 2180 { 2181 switch (no) { 2182 case XY_ERR_FAIL: 2183 return ("Software fatal error"); 2184 case XY_ERR_DERR: 2185 return ("DOUBLE ERROR"); 2186 case XY_ERR_AOK: 2187 return ("Successful completion"); 2188 case XY_ERR_IPEN: 2189 return("Interrupt pending"); 2190 case XY_ERR_BCFL: 2191 return("Busy conflict"); 2192 case XY_ERR_TIMO: 2193 return("Operation timeout"); 2194 case XY_ERR_NHDR: 2195 return("Header not found"); 2196 case XY_ERR_HARD: 2197 return("Hard ECC error"); 2198 case XY_ERR_ICYL: 2199 return("Illegal cylinder address"); 2200 case XY_ERR_ISEC: 2201 return("Illegal sector address"); 2202 case XY_ERR_SMAL: 2203 return("Last sector too small"); 2204 case XY_ERR_SACK: 2205 return("Slave ACK error (non-existent memory)"); 2206 case XY_ERR_CHER: 2207 return("Cylinder and head/header error"); 2208 case XY_ERR_SRTR: 2209 return("Auto-seek retry successful"); 2210 case XY_ERR_WPRO: 2211 return("Write-protect error"); 2212 case XY_ERR_UIMP: 2213 return("Unimplemented command"); 2214 case XY_ERR_DNRY: 2215 return("Drive not ready"); 2216 case XY_ERR_SZER: 2217 return("Sector count zero"); 2218 case XY_ERR_DFLT: 2219 return("Drive faulted"); 2220 case XY_ERR_ISSZ: 2221 return("Illegal sector size"); 2222 case XY_ERR_SLTA: 2223 return("Self test A"); 2224 case XY_ERR_SLTB: 2225 return("Self test B"); 2226 case XY_ERR_SLTC: 2227 return("Self test C"); 2228 case XY_ERR_SOFT: 2229 return("Soft ECC error"); 2230 case XY_ERR_SFOK: 2231 return("Soft ECC error recovered"); 2232 case XY_ERR_IHED: 2233 return("Illegal head"); 2234 case XY_ERR_DSEQ: 2235 return("Disk sequencer error"); 2236 case XY_ERR_SEEK: 2237 return("Seek error"); 2238 default: 2239 return ("Unknown error"); 2240 } 2241 } 2242 2243 int 2244 xyc_entoact(errno) 2245 2246 int errno; 2247 2248 { 2249 switch (errno) { 2250 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2251 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2252 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2253 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2254 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2255 2256 return(XY_ERA_PROG); /* program error ! */ 2257 2258 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2259 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2260 case XY_ERR_SOFT: 2261 2262 return(XY_ERA_HARD); /* hard error, retry */ 2263 2264 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2265 2266 return(XY_ERA_RSET); /* hard error reset */ 2267 2268 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2269 2270 return(XY_ERA_SOFT); /* an FYI error */ 2271 2272 case XY_ERR_WPRO: 2273 2274 return(XY_ERA_WPRO); /* write protect */ 2275 } 2276 2277 return(XY_ERA_PROG); /* ??? */ 2278 } 2279
Indexes created Tue Sep 30 11:09:46 GMT 2025