xy.c revision 1.11
1 /* $NetBSD: xy.c,v 1.11 1999/03/05 10:38:16 pk Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * 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/autoconf.h> 80 #include <machine/bus.h> 81 #include <machine/conf.h> 82 83 #if defined(__sparc__) || defined(__sun3__) 84 #include <dev/sun/disklabel.h> 85 #endif 86 87 #include <dev/vme/vmevar.h> 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 *, void *)); 183 184 static void xydummystrat __P((struct buf *)); 185 int xygetdisklabel __P((struct xy_softc *, void *)); 186 187 /* 188 * cfattach's: device driver interface to autoconfig 189 */ 190 191 struct cfattach xyc_ca = { 192 sizeof(struct xyc_softc), xycmatch, xycattach 193 }; 194 195 struct cfattach xy_ca = { 196 sizeof(struct xy_softc), xymatch, xyattach 197 }; 198 199 extern struct cfdriver xy_cd; 200 201 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 202 int driveno; /* unit number */ 203 int fullmode; /* submit mode */ 204 int booting; /* are we booting or not? */ 205 }; 206 207 /* 208 * dkdriver 209 */ 210 211 struct dkdriver xydkdriver = { xystrategy }; 212 213 /* 214 * start: disk label fix code (XXX) 215 */ 216 217 static void *xy_labeldata; 218 219 static void 220 xydummystrat(bp) 221 struct buf *bp; 222 { 223 if (bp->b_bcount != XYFM_BPS) 224 panic("xydummystrat"); 225 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 226 bp->b_flags |= B_DONE; 227 bp->b_flags &= ~B_BUSY; 228 } 229 230 int 231 xygetdisklabel(xy, b) 232 struct xy_softc *xy; 233 void *b; 234 { 235 char *err; 236 #if defined(__sparc__) || defined(__sun3__) 237 struct sun_disklabel *sdl; 238 #endif 239 240 /* We already have the label data in `b'; setup for dummy strategy */ 241 xy_labeldata = b; 242 243 /* Required parameter for readdisklabel() */ 244 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 245 246 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 247 xydummystrat, 248 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 249 if (err) { 250 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 251 return(XY_ERR_FAIL); 252 } 253 254 #if defined(__sparc__) || defined(__sun3__) 255 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 256 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 257 if (sdl->sl_magic == SUN_DKMAGIC) { 258 xy->pcyl = sdl->sl_pcylinders; 259 } else 260 #endif 261 { 262 printf("%s: WARNING: no `pcyl' in disk label.\n", 263 xy->sc_dev.dv_xname); 264 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 265 xy->sc_dk.dk_label->d_acylinders; 266 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 267 xy->sc_dev.dv_xname, xy->pcyl); 268 } 269 270 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 271 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 272 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 273 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 274 xy->sectpercyl = xy->nhead * xy->nsect; 275 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 276 * sun->bsd */ 277 return(XY_ERR_AOK); 278 } 279 280 /* 281 * end: disk label fix code (XXX) 282 */ 283 284 /* 285 * a u t o c o n f i g f u n c t i o n s 286 */ 287 288 /* 289 * xycmatch: determine if xyc is present or not. we do a 290 * soft reset to detect the xyc. 291 */ 292 int 293 xyc_probe(vaddr, arg) 294 void *vaddr; 295 void *arg; 296 { 297 struct xyc *xyc = vaddr; 298 299 return (xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL); 300 } 301 302 int xycmatch(parent, cf, aux) 303 struct device *parent; 304 struct cfdata *cf; 305 void *aux; 306 { 307 struct vme_attach_args *va = aux; 308 vme_chipset_tag_t ct = va->vma_chipset_tag; 309 bus_space_tag_t bt = va->vma_bustag; 310 vme_mod_t mod; 311 312 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 313 314 return (vme_bus_probe(ct, bt, va->vma_reg[0], 315 offsetof(struct xyc, xyc_rsetup), 1, 316 mod, xyc_probe, 0)); 317 } 318 319 /* 320 * xycattach: attach controller 321 */ 322 void 323 xycattach(parent, self, aux) 324 struct device *parent, *self; 325 void *aux; 326 327 { 328 struct vme_attach_args *va = aux; 329 vme_chipset_tag_t ct = va->vma_chipset_tag; 330 bus_space_tag_t bt = va->vma_bustag; 331 bus_space_handle_t bh; 332 vme_intr_handle_t ih; 333 vme_mod_t mod; 334 struct xyc_softc *xyc = (void *) self; 335 struct xyc_attach_args xa; 336 int lcv, res, pbsz, error; 337 bus_dma_segment_t seg; 338 int rseg; 339 340 /* get addressing and intr level stuff from autoconfig and load it 341 * into our xyc_softc. */ 342 343 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 344 345 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 346 mod, bt, &bh) != 0) 347 panic("xyc: vme_map"); 348 349 xyc->xyc = (struct xyc *) bh; 350 xyc->ipl = va->vma_pri; 351 xyc->vector = va->vma_vec; 352 xyc->no_ols = 0; /* XXX should be from config */ 353 354 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 355 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 356 357 /* 358 * allocate and zero buffers 359 * check boundaries of the KVA's ... all IOPBs must reside in 360 * the same 64K region. 361 */ 362 363 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 364 365 error = bus_dmamem_alloc( 366 xyc->dmatag, 367 pbsz, /* size */ 368 64*1024, /* boundary */ 369 0, /* alignment */ 370 &seg, 371 1, /* # of segments */ 372 &rseg, /* actual # of segments */ 373 BUS_DMA_NOWAIT); 374 if (error) { 375 printf("%s: DMA buffer map error %d\n", 376 xyc->sc_dev.dv_xname, error); 377 return; 378 } 379 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 380 381 error = bus_dmamem_map( 382 xyc->dmatag, 383 &seg, 384 rseg, 385 XYC_MAXIOPB * sizeof(struct xy_iopb), 386 (caddr_t *)&xyc->iopbase, 387 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 388 if (error) { 389 bus_dmamem_free(xyc->dmatag, &seg, rseg); 390 printf("%s: DMA buffer map error %d\n", 391 xyc->sc_dev.dv_xname, error); 392 return; 393 } 394 bzero(xyc->iopbase, pbsz); 395 396 xyc->reqs = (struct xy_iorq *) 397 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 398 if (xyc->reqs == NULL) 399 panic("xyc malloc"); 400 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 401 402 /* 403 * init iorq to iopb pointers, and non-zero fields in the 404 * iopb which never change. 405 */ 406 407 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 408 xyc->xy_chain[lcv] = NULL; 409 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 410 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 411 xyc->iopbase[lcv].asr = 1; /* always the same */ 412 xyc->iopbase[lcv].eef = 1; /* always the same */ 413 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 414 xyc->iopbase[lcv].aud = 1; /* always the same */ 415 xyc->iopbase[lcv].relo = 1; /* always the same */ 416 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 417 418 error = bus_dmamap_create( 419 xyc->dmatag, 420 MAXPHYS, /* size */ 421 1, /* nsegments */ 422 MAXPHYS, /* maxsegsz */ 423 0, /* boundary */ 424 BUS_DMA_NOWAIT, 425 &xyc->reqs[lcv].dmamap); 426 if (error) { 427 printf("%s: DMA buffer map create error %d\n", 428 xyc->sc_dev.dv_xname, error); 429 return; 430 } 431 } 432 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 433 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 434 xyc->xy_hand = 0; 435 436 /* read controller parameters and insure we have a 450/451 */ 437 438 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 439 res = xyc->ciopb->ctyp; 440 XYC_DONE(xyc, error); 441 if (res != XYCT_450) { 442 if (error) 443 printf(": %s: ", xyc_e2str(error)); 444 printf(": doesn't identify as a 450/451\n"); 445 return; 446 } 447 printf(": Xylogics 450/451"); 448 if (xyc->no_ols) 449 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 450 printf("\n"); 451 if (error) { 452 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 453 xyc_e2str(error)); 454 return; 455 } 456 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 457 printf("%s: 24 bit addressing turned off\n", 458 xyc->sc_dev.dv_xname); 459 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 460 printf("to enable 24 bit mode and this driver\n"); 461 return; 462 } 463 464 /* link in interrupt with higher level software */ 465 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 466 vme_intr_establish(ct, ih, xycintr, xyc); 467 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 468 vme_bus_establish(ct, &xyc->sc_dev); 469 470 471 /* now we must look for disks using autoconfig */ 472 xa.fullmode = XY_SUB_POLL; 473 xa.booting = 1; 474 475 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 476 (void) config_found(self, (void *) &xa, NULL); 477 478 /* start the watchdog clock */ 479 timeout(xyc_tick, xyc, XYC_TICKCNT); 480 481 } 482 483 /* 484 * xymatch: probe for disk. 485 * 486 * note: we almost always say disk is present. this allows us to 487 * spin up and configure a disk after the system is booted (we can 488 * call xyattach!). 489 */ 490 int 491 xymatch(parent, cf, aux) 492 struct device *parent; 493 struct cfdata *cf; 494 void *aux; 495 { 496 struct xyc_attach_args *xa = aux; 497 498 /* looking for autoconf wildcard or exact match */ 499 500 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 501 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 502 return 0; 503 504 return 1; 505 506 } 507 508 /* 509 * xyattach: attach a disk. this can be called from autoconf and also 510 * from xyopen/xystrategy. 511 */ 512 void 513 xyattach(parent, self, aux) 514 struct device *parent, *self; 515 void *aux; 516 517 { 518 struct xy_softc *xy = (void *) self, *oxy; 519 struct xyc_softc *xyc = (void *) parent; 520 struct xyc_attach_args *xa = aux; 521 int spt, mb, blk, lcv, fmode, s = 0, newstate; 522 struct dkbad *dkb; 523 int rseg, error; 524 bus_dma_segment_t seg; 525 caddr_t dmaddr; 526 caddr_t buf; 527 528 /* 529 * Always re-initialize the disk structure. We want statistics 530 * to start with a clean slate. 531 */ 532 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 533 xy->sc_dk.dk_driver = &xydkdriver; 534 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 535 536 /* if booting, init the xy_softc */ 537 538 if (xa->booting) { 539 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 540 xy->flags = 0; 541 xy->parent = xyc; 542 543 /* init queue of waiting bufs */ 544 545 xy->xyq.b_active = 0; 546 xy->xyq.b_actf = 0; 547 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 548 549 xy->xyrq = &xyc->reqs[xa->driveno]; 550 551 } 552 xy->xy_drive = xa->driveno; 553 fmode = xa->fullmode; 554 xyc->sc_drives[xa->driveno] = xy; 555 556 /* if not booting, make sure we are the only process in the attach for 557 * this drive. if locked out, sleep on it. */ 558 559 if (!xa->booting) { 560 s = splbio(); 561 while (xy->state == XY_DRIVE_ATTACHING) { 562 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 563 splx(s); 564 return; 565 } 566 } 567 printf("%s at %s", 568 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 569 } 570 571 /* we now have control */ 572 xy->state = XY_DRIVE_ATTACHING; 573 newstate = XY_DRIVE_UNKNOWN; 574 575 buf = NULL; 576 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 577 &seg, 1, &rseg, BUS_DMA_NOWAIT); 578 if (error) { 579 printf("%s: DMA buffer alloc error %d\n", 580 xy->sc_dev.dv_xname, error); 581 goto done; 582 } 583 dmaddr = (caddr_t)seg.ds_addr; 584 585 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 586 &buf, 587 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 588 if (error) { 589 printf("%s: DMA buffer alloc error %d\n", 590 xy->sc_dev.dv_xname, error); 591 bus_dmamem_free(xyc->dmatag, &seg, rseg); 592 goto done; 593 } 594 595 596 /* first try and reset the drive */ 597 598 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 599 XYC_DONE(xyc, error); 600 if (error == XY_ERR_DNRY) { 601 printf(" drive %d: off-line\n", xa->driveno); 602 goto done; 603 } 604 if (error) { 605 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 606 goto done; 607 } 608 printf(" drive %d: ready", xa->driveno); 609 610 /* 611 * now set drive parameters (to semi-bogus values) so we can read the 612 * disk label. 613 */ 614 xy->pcyl = xy->ncyl = 1; 615 xy->acyl = 0; 616 xy->nhead = 1; 617 xy->nsect = 1; 618 xy->sectpercyl = 1; 619 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 620 xy->dkb.bt_bad[lcv].bt_cyl = 621 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 622 623 /* read disk label */ 624 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 625 xy->drive_type++) { 626 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 627 dmaddr, fmode); 628 XYC_DONE(xyc, error); 629 if (error == XY_ERR_AOK) break; 630 } 631 632 if (error != XY_ERR_AOK) { 633 printf("\n%s: reading disk label failed: %s\n", 634 xy->sc_dev.dv_xname, xyc_e2str(error)); 635 goto done; 636 } 637 printf(" (drive type %d)\n", xy->drive_type); 638 639 newstate = XY_DRIVE_NOLABEL; 640 641 xy->hw_spt = spt = 0; /* XXX needed ? */ 642 /* Attach the disk: must be before getdisklabel to malloc label */ 643 disk_attach(&xy->sc_dk); 644 645 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 646 goto done; 647 648 /* inform the user of what is up */ 649 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 650 buf, xy->pcyl); 651 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 652 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 653 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 654 XYFM_BPS); 655 656 /* 657 * 450/451 stupidity: the drive type is encoded into the format 658 * of the disk. the drive type in the IOPB must match the drive 659 * type in the format, or you will not be able to do I/O to the 660 * disk (you get header not found errors). if you have two drives 661 * of different sizes that have the same drive type in their 662 * formatting then you are out of luck. 663 * 664 * this problem was corrected in the 753/7053. 665 */ 666 667 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 668 oxy = xyc->sc_drives[lcv]; 669 if (oxy == NULL || oxy == xy) continue; 670 if (oxy->drive_type != xy->drive_type) continue; 671 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 672 xy->nhead != oxy->nhead) { 673 printf("%s: %s and %s must be the same size!\n", 674 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 675 oxy->sc_dev.dv_xname); 676 panic("xy drive size mismatch"); 677 } 678 } 679 680 681 /* now set the real drive parameters! */ 682 683 blk = (xy->nsect - 1) + 684 ((xy->nhead - 1) * xy->nsect) + 685 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 686 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 687 XYC_DONE(xyc, error); 688 if (error) { 689 printf("%s: write drive size failed: %s\n", 690 xy->sc_dev.dv_xname, xyc_e2str(error)); 691 goto done; 692 } 693 newstate = XY_DRIVE_ONLINE; 694 695 /* 696 * read bad144 table. this table resides on the first sector of the 697 * last track of the disk (i.e. second cyl of "acyl" area). 698 */ 699 700 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 701 /* last cyl */ 702 (xy->nhead - 1) * xy->nsect; /* last head */ 703 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 704 dmaddr, fmode); 705 XYC_DONE(xyc, error); 706 if (error) { 707 printf("%s: reading bad144 failed: %s\n", 708 xy->sc_dev.dv_xname, xyc_e2str(error)); 709 goto done; 710 } 711 712 /* check dkbad for sanity */ 713 dkb = (struct dkbad *) buf; 714 for (lcv = 0; lcv < 126; lcv++) { 715 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 716 dkb->bt_bad[lcv].bt_cyl == 0) && 717 dkb->bt_bad[lcv].bt_trksec == 0xffff) 718 continue; /* blank */ 719 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 720 break; 721 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 722 break; 723 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 724 break; 725 } 726 if (lcv != 126) { 727 printf("%s: warning: invalid bad144 sector!\n", 728 xy->sc_dev.dv_xname); 729 } else { 730 bcopy(buf, &xy->dkb, XYFM_BPS); 731 } 732 733 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 734 735 done: 736 if (buf != NULL) { 737 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 738 bus_dmamem_free(xyc->dmatag, &seg, rseg); 739 } 740 741 xy->state = newstate; 742 if (!xa->booting) { 743 wakeup(&xy->state); 744 splx(s); 745 } 746 } 747 748 /* 749 * end of autoconfig functions 750 */ 751 752 /* 753 * { b , c } d e v s w f u n c t i o n s 754 */ 755 756 /* 757 * xyclose: close device 758 */ 759 int 760 xyclose(dev, flag, fmt, p) 761 dev_t dev; 762 int flag, fmt; 763 struct proc *p; 764 765 { 766 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 767 int part = DISKPART(dev); 768 769 /* clear mask bits */ 770 771 switch (fmt) { 772 case S_IFCHR: 773 xy->sc_dk.dk_copenmask &= ~(1 << part); 774 break; 775 case S_IFBLK: 776 xy->sc_dk.dk_bopenmask &= ~(1 << part); 777 break; 778 } 779 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 780 781 return 0; 782 } 783 784 /* 785 * xydump: crash dump system 786 */ 787 int 788 xydump(dev, blkno, va, size) 789 dev_t dev; 790 daddr_t blkno; 791 caddr_t va; 792 size_t size; 793 { 794 int unit, part; 795 struct xy_softc *xy; 796 797 unit = DISKUNIT(dev); 798 if (unit >= xy_cd.cd_ndevs) 799 return ENXIO; 800 part = DISKPART(dev); 801 802 xy = xy_cd.cd_devs[unit]; 803 804 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 805 'a' + part); 806 807 return ENXIO; 808 809 /* outline: globals: "dumplo" == sector number of partition to start 810 * dump at (convert to physical sector with partition table) 811 * "dumpsize" == size of dump in clicks "physmem" == size of physical 812 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 813 * physmem) 814 * 815 * dump a copy of physical memory to the dump device starting at sector 816 * "dumplo" in the swap partition (make sure > 0). map in pages as 817 * we go. use polled I/O. 818 * 819 * XXX how to handle NON_CONTIG? */ 820 821 } 822 823 /* 824 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 825 */ 826 int 827 xyioctl(dev, command, addr, flag, p) 828 dev_t dev; 829 u_long command; 830 caddr_t addr; 831 int flag; 832 struct proc *p; 833 834 { 835 struct xy_softc *xy; 836 struct xd_iocmd *xio; 837 int error, s, unit; 838 839 unit = DISKUNIT(dev); 840 841 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 842 return (ENXIO); 843 844 /* switch on ioctl type */ 845 846 switch (command) { 847 case DIOCSBAD: /* set bad144 info */ 848 if ((flag & FWRITE) == 0) 849 return EBADF; 850 s = splbio(); 851 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 852 splx(s); 853 return 0; 854 855 case DIOCGDINFO: /* get disk label */ 856 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 857 return 0; 858 859 case DIOCGPART: /* get partition info */ 860 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 861 ((struct partinfo *) addr)->part = 862 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 863 return 0; 864 865 case DIOCSDINFO: /* set disk label */ 866 if ((flag & FWRITE) == 0) 867 return EBADF; 868 error = setdisklabel(xy->sc_dk.dk_label, 869 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 870 xy->sc_dk.dk_cpulabel); 871 if (error == 0) { 872 if (xy->state == XY_DRIVE_NOLABEL) 873 xy->state = XY_DRIVE_ONLINE; 874 } 875 return error; 876 877 case DIOCWLABEL: /* change write status of disk label */ 878 if ((flag & FWRITE) == 0) 879 return EBADF; 880 if (*(int *) addr) 881 xy->flags |= XY_WLABEL; 882 else 883 xy->flags &= ~XY_WLABEL; 884 return 0; 885 886 case DIOCWDINFO: /* write disk label */ 887 if ((flag & FWRITE) == 0) 888 return EBADF; 889 error = setdisklabel(xy->sc_dk.dk_label, 890 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 891 xy->sc_dk.dk_cpulabel); 892 if (error == 0) { 893 if (xy->state == XY_DRIVE_NOLABEL) 894 xy->state = XY_DRIVE_ONLINE; 895 896 /* Simulate opening partition 0 so write succeeds. */ 897 xy->sc_dk.dk_openmask |= (1 << 0); 898 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 899 xystrategy, xy->sc_dk.dk_label, 900 xy->sc_dk.dk_cpulabel); 901 xy->sc_dk.dk_openmask = 902 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 903 } 904 return error; 905 906 case DIOSXDCMD: 907 xio = (struct xd_iocmd *) addr; 908 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 909 return (error); 910 return (xyc_ioctlcmd(xy, dev, xio)); 911 912 default: 913 return ENOTTY; 914 } 915 } 916 917 /* 918 * xyopen: open drive 919 */ 920 921 int 922 xyopen(dev, flag, fmt, p) 923 dev_t dev; 924 int flag, fmt; 925 struct proc *p; 926 { 927 int unit, part; 928 struct xy_softc *xy; 929 struct xyc_attach_args xa; 930 931 /* first, could it be a valid target? */ 932 933 unit = DISKUNIT(dev); 934 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 935 return (ENXIO); 936 part = DISKPART(dev); 937 938 /* do we need to attach the drive? */ 939 940 if (xy->state == XY_DRIVE_UNKNOWN) { 941 xa.driveno = xy->xy_drive; 942 xa.fullmode = XY_SUB_WAIT; 943 xa.booting = 0; 944 xyattach((struct device *) xy->parent, 945 (struct device *) xy, &xa); 946 if (xy->state == XY_DRIVE_UNKNOWN) { 947 return (EIO); 948 } 949 } 950 /* check for partition */ 951 952 if (part != RAW_PART && 953 (part >= xy->sc_dk.dk_label->d_npartitions || 954 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 955 return (ENXIO); 956 } 957 /* set open masks */ 958 959 switch (fmt) { 960 case S_IFCHR: 961 xy->sc_dk.dk_copenmask |= (1 << part); 962 break; 963 case S_IFBLK: 964 xy->sc_dk.dk_bopenmask |= (1 << part); 965 break; 966 } 967 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 968 969 return 0; 970 } 971 972 int 973 xyread(dev, uio, flags) 974 dev_t dev; 975 struct uio *uio; 976 int flags; 977 { 978 979 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 980 } 981 982 int 983 xywrite(dev, uio, flags) 984 dev_t dev; 985 struct uio *uio; 986 int flags; 987 { 988 989 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 990 } 991 992 993 /* 994 * xysize: return size of a partition for a dump 995 */ 996 997 int 998 xysize(dev) 999 dev_t dev; 1000 1001 { 1002 struct xy_softc *xysc; 1003 int unit, part, size, omask; 1004 1005 /* valid unit? */ 1006 unit = DISKUNIT(dev); 1007 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1008 return (-1); 1009 1010 part = DISKPART(dev); 1011 omask = xysc->sc_dk.dk_openmask & (1 << part); 1012 1013 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1014 return (-1); 1015 1016 /* do it */ 1017 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1018 size = -1; /* only give valid size for swap partitions */ 1019 else 1020 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1021 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1022 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1023 return (-1); 1024 return (size); 1025 } 1026 1027 /* 1028 * xystrategy: buffering system interface to xy. 1029 */ 1030 1031 void 1032 xystrategy(bp) 1033 struct buf *bp; 1034 1035 { 1036 struct xy_softc *xy; 1037 int s, unit; 1038 struct xyc_attach_args xa; 1039 1040 unit = DISKUNIT(bp->b_dev); 1041 1042 /* check for live device */ 1043 1044 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1045 bp->b_blkno < 0 || 1046 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1047 bp->b_error = EINVAL; 1048 goto bad; 1049 } 1050 /* do we need to attach the drive? */ 1051 1052 if (xy->state == XY_DRIVE_UNKNOWN) { 1053 xa.driveno = xy->xy_drive; 1054 xa.fullmode = XY_SUB_WAIT; 1055 xa.booting = 0; 1056 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1057 if (xy->state == XY_DRIVE_UNKNOWN) { 1058 bp->b_error = EIO; 1059 goto bad; 1060 } 1061 } 1062 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1063 /* no I/O to unlabeled disks, unless raw partition */ 1064 bp->b_error = EIO; 1065 goto bad; 1066 } 1067 /* short circuit zero length request */ 1068 1069 if (bp->b_bcount == 0) 1070 goto done; 1071 1072 /* check bounds with label (disksubr.c). Determine the size of the 1073 * transfer, and make sure it is within the boundaries of the 1074 * partition. Adjust transfer if needed, and signal errors or early 1075 * completion. */ 1076 1077 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1078 (xy->flags & XY_WLABEL) != 0) <= 0) 1079 goto done; 1080 1081 /* 1082 * now we know we have a valid buf structure that we need to do I/O 1083 * on. 1084 */ 1085 s = splbio(); /* protect the queues */ 1086 1087 disksort(&xy->xyq, bp); 1088 1089 /* start 'em up */ 1090 1091 xyc_start(xy->parent, NULL); 1092 1093 /* done! */ 1094 1095 splx(s); 1096 return; 1097 1098 bad: /* tells upper layers we have an error */ 1099 bp->b_flags |= B_ERROR; 1100 done: /* tells upper layers we are done with this 1101 * buf */ 1102 bp->b_resid = bp->b_bcount; 1103 biodone(bp); 1104 } 1105 /* 1106 * end of {b,c}devsw functions 1107 */ 1108 1109 /* 1110 * i n t e r r u p t f u n c t i o n 1111 * 1112 * xycintr: hardware interrupt. 1113 */ 1114 int 1115 xycintr(v) 1116 void *v; 1117 1118 { 1119 struct xyc_softc *xycsc = v; 1120 1121 /* kick the event counter */ 1122 1123 xycsc->sc_intrcnt.ev_count++; 1124 1125 /* remove as many done IOPBs as possible */ 1126 1127 xyc_remove_iorq(xycsc); 1128 1129 /* start any iorq's already waiting */ 1130 1131 xyc_start(xycsc, NULL); 1132 1133 return (1); 1134 } 1135 /* 1136 * end of interrupt function 1137 */ 1138 1139 /* 1140 * i n t e r n a l f u n c t i o n s 1141 */ 1142 1143 /* 1144 * xyc_rqinit: fill out the fields of an I/O request 1145 */ 1146 1147 inline void 1148 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1149 struct xy_iorq *rq; 1150 struct xyc_softc *xyc; 1151 struct xy_softc *xy; 1152 int md; 1153 u_long blk; 1154 int cnt; 1155 caddr_t db; 1156 struct buf *bp; 1157 { 1158 rq->xyc = xyc; 1159 rq->xy = xy; 1160 rq->ttl = XYC_MAXTTL + 10; 1161 rq->mode = md; 1162 rq->tries = rq->errno = rq->lasterror = 0; 1163 rq->blockno = blk; 1164 rq->sectcnt = cnt; 1165 rq->dbuf = db; 1166 rq->buf = bp; 1167 } 1168 1169 /* 1170 * xyc_rqtopb: load up an IOPB based on an iorq 1171 */ 1172 1173 void 1174 xyc_rqtopb(iorq, iopb, cmd, subfun) 1175 struct xy_iorq *iorq; 1176 struct xy_iopb *iopb; 1177 int cmd, subfun; 1178 1179 { 1180 u_long block, dp; 1181 1182 /* normal IOPB case, standard stuff */ 1183 1184 /* chain bit handled later */ 1185 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1186 iopb->com = cmd; 1187 iopb->errno = 0; 1188 iopb->errs = 0; 1189 iopb->done = 0; 1190 if (iorq->xy) { 1191 iopb->unit = iorq->xy->xy_drive; 1192 iopb->dt = iorq->xy->drive_type; 1193 } else { 1194 iopb->unit = 0; 1195 iopb->dt = 0; 1196 } 1197 block = iorq->blockno; 1198 if (iorq->xy == NULL || block == 0) { 1199 iopb->sect = iopb->head = iopb->cyl = 0; 1200 } else { 1201 iopb->sect = block % iorq->xy->nsect; 1202 block = block / iorq->xy->nsect; 1203 iopb->head = block % iorq->xy->nhead; 1204 block = block / iorq->xy->nhead; 1205 iopb->cyl = block; 1206 } 1207 iopb->scnt = iorq->sectcnt; 1208 dp = (u_long) iorq->dbuf; 1209 if (iorq->dbuf == NULL) { 1210 iopb->dataa = 0; 1211 iopb->datar = 0; 1212 } else { 1213 iopb->dataa = (dp & 0xffff); 1214 iopb->datar = ((dp & 0xff0000) >> 16); 1215 } 1216 iopb->subfn = subfun; 1217 } 1218 1219 1220 /* 1221 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1222 */ 1223 1224 int 1225 xyc_unbusy(xyc, del) 1226 1227 struct xyc *xyc; 1228 int del; 1229 1230 { 1231 while (del-- > 0) { 1232 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1233 break; 1234 DELAY(1); 1235 } 1236 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1237 } 1238 1239 /* 1240 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1241 * note that NORM requests are handled seperately. 1242 */ 1243 int 1244 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1245 struct xyc_softc *xycsc; 1246 int cmd, subfn, unit, block, scnt; 1247 char *dptr; 1248 int fullmode; 1249 1250 { 1251 int submode = XY_STATE(fullmode); 1252 struct xy_iorq *iorq = xycsc->ciorq; 1253 struct xy_iopb *iopb = xycsc->ciopb; 1254 1255 /* 1256 * is someone else using the control iopq wait for it if we can 1257 */ 1258 start: 1259 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1260 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1261 return(XY_ERR_FAIL); 1262 goto start; 1263 } 1264 1265 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1266 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1267 iorq->mode = XY_SUB_FREE; 1268 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1269 } 1270 1271 /* init iorq/iopb */ 1272 1273 xyc_rqinit(iorq, xycsc, 1274 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1275 fullmode, block, scnt, dptr, NULL); 1276 1277 /* load IOPB from iorq */ 1278 1279 xyc_rqtopb(iorq, iopb, cmd, subfn); 1280 1281 /* submit it for processing */ 1282 1283 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1284 1285 return(XY_ERR_AOK); 1286 } 1287 1288 /* 1289 * xyc_startbuf 1290 * start a buffer for running 1291 */ 1292 1293 int 1294 xyc_startbuf(xycsc, xysc, bp) 1295 struct xyc_softc *xycsc; 1296 struct xy_softc *xysc; 1297 struct buf *bp; 1298 1299 { 1300 int partno, error; 1301 struct xy_iorq *iorq; 1302 struct xy_iopb *iopb; 1303 u_long block; 1304 1305 iorq = xysc->xyrq; 1306 iopb = iorq->iopb; 1307 1308 /* get buf */ 1309 1310 if (bp == NULL) 1311 panic("xyc_startbuf null buf"); 1312 1313 partno = DISKPART(bp->b_dev); 1314 #ifdef XYC_DEBUG 1315 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1316 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1317 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1318 bp->b_bcount, bp->b_data); 1319 #endif 1320 1321 /* 1322 * load request. we have to calculate the correct block number based 1323 * on partition info. 1324 * 1325 * note that iorq points to the buffer as mapped into DVMA space, 1326 * where as the bp->b_data points to its non-DVMA mapping. 1327 */ 1328 1329 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1330 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1331 1332 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1333 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1334 if (error != 0) { 1335 printf("%s: warning: cannot load DMA map\n", 1336 xycsc->sc_dev.dv_xname); 1337 return (XY_ERR_FAIL); /* XXX: need some sort of 1338 * call-back scheme here? */ 1339 } 1340 1341 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1342 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1343 ? BUS_DMASYNC_PREREAD 1344 : BUS_DMASYNC_PREWRITE); 1345 1346 /* init iorq and load iopb from it */ 1347 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1348 bp->b_bcount / XYFM_BPS, 1349 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1350 bp); 1351 1352 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1353 1354 /* Instrumentation. */ 1355 disk_busy(&xysc->sc_dk); 1356 1357 return (XY_ERR_AOK); 1358 } 1359 1360 1361 /* 1362 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1363 * if ok. if it fail returns an error code. type is XY_SUB_*. 1364 * 1365 * note: caller frees iorq in all cases except NORM 1366 * 1367 * return value: 1368 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1369 * WAIT: XY_AOK (success), <error-code> (failed) 1370 * POLL: <same as WAIT> 1371 * NOQ : <same as NORM> 1372 * 1373 * there are three sources for i/o requests: 1374 * [1] xystrategy: normal block I/O, using "struct buf" system. 1375 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1376 * [3] open/ioctl: these are I/O requests done in the context of a process, 1377 * and the process should block until they are done. 1378 * 1379 * software state is stored in the iorq structure. each iorq has an 1380 * iopb structure. the hardware understands the iopb structure. 1381 * every command must go through an iopb. a 450 handles one iopb at a 1382 * time, where as a 451 can take them in chains. [the 450 claims it 1383 * can handle chains, but is appears to be buggy...] iopb are allocated 1384 * in DVMA space at boot up time. each disk gets one iopb, and the 1385 * controller gets one (for POLL and WAIT commands). what happens if 1386 * the iopb is busy? for i/o type [1], the buffers are queued at the 1387 * "buff" layer and * picked up later by the interrupt routine. for case 1388 * [2] we can only be blocked if there is a WAIT type I/O request being 1389 * run. since this can only happen when we are crashing, we wait a sec 1390 * and then steal the IOPB. for case [3] the process can sleep 1391 * on the iorq free list until some iopbs are avaliable. 1392 */ 1393 1394 1395 int 1396 xyc_submit_iorq(xycsc, iorq, type) 1397 struct xyc_softc *xycsc; 1398 struct xy_iorq *iorq; 1399 int type; 1400 1401 { 1402 struct xy_iopb *dmaiopb; 1403 1404 #ifdef XYC_DEBUG 1405 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1406 xycsc->sc_dev.dv_xname, iorq, type); 1407 #endif 1408 1409 /* first check and see if controller is busy */ 1410 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1411 #ifdef XYC_DEBUG 1412 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1413 #endif 1414 if (type == XY_SUB_NOQ) 1415 return (XY_ERR_FAIL); /* failed */ 1416 switch (type) { 1417 case XY_SUB_NORM: 1418 return XY_ERR_AOK; /* success */ 1419 case XY_SUB_WAIT: 1420 while (iorq->iopb->done == 0) { 1421 sleep(iorq, PRIBIO); 1422 } 1423 return (iorq->errno); 1424 case XY_SUB_POLL: /* steal controller */ 1425 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1426 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1427 panic("xyc_submit_iorq: stuck xyc"); 1428 printf("%s: stole controller\n", 1429 xycsc->sc_dev.dv_xname); 1430 break; 1431 default: 1432 panic("xyc_submit_iorq adding"); 1433 } 1434 } 1435 1436 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1437 if (dmaiopb == NULL) { /* nothing doing? */ 1438 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1439 return(XY_ERR_AOK); 1440 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1441 } 1442 1443 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1444 1445 /* command now running, wrap it up */ 1446 switch (type) { 1447 case XY_SUB_NORM: 1448 case XY_SUB_NOQ: 1449 return (XY_ERR_AOK); /* success */ 1450 case XY_SUB_WAIT: 1451 while (iorq->iopb->done == 0) { 1452 sleep(iorq, PRIBIO); 1453 } 1454 return (iorq->errno); 1455 case XY_SUB_POLL: 1456 return (xyc_piodriver(xycsc, iorq)); 1457 default: 1458 panic("xyc_submit_iorq wrap up"); 1459 } 1460 panic("xyc_submit_iorq"); 1461 return 0; /* not reached */ 1462 } 1463 1464 1465 /* 1466 * xyc_chain: build a chain. return dvma address of first element in 1467 * the chain. iorq != NULL: means we only want that item on the chain. 1468 */ 1469 1470 struct xy_iopb * 1471 xyc_chain(xycsc, iorq) 1472 struct xyc_softc *xycsc; 1473 struct xy_iorq *iorq; 1474 1475 { 1476 int togo, chain, hand; 1477 1478 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1479 1480 /* 1481 * promote control IOPB to the top 1482 */ 1483 if (iorq == NULL) { 1484 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1485 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1486 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1487 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1488 } 1489 1490 /* 1491 * special case: if iorq != NULL then we have a POLL or WAIT request. 1492 * we let these take priority and do them first. 1493 */ 1494 if (iorq) { 1495 xycsc->xy_chain[0] = iorq; 1496 iorq->iopb->chen = 0; 1497 return(iorq->dmaiopb); 1498 } 1499 1500 /* 1501 * NORM case: do round robin and maybe chain (if allowed and possible) 1502 */ 1503 chain = 0; 1504 hand = xycsc->xy_hand; 1505 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1506 1507 for (togo = XYC_MAXIOPB; togo > 0; 1508 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1509 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1510 1511 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1512 xycsc->iopbase[hand].done) 1513 continue; /* not ready-for-i/o */ 1514 1515 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1516 iopb = xycsc->xy_chain[chain]->iopb; 1517 iopb->chen = 0; 1518 if (chain != 0) { 1519 /* adding a link to a chain */ 1520 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1521 prev_iopb->chen = 1; 1522 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1523 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1524 } else { 1525 /* head of chain */ 1526 iorq = xycsc->xy_chain[chain]; 1527 } 1528 chain++; 1529 1530 /* quit if chaining dis-allowed */ 1531 if (xycsc->no_ols) 1532 break; 1533 } 1534 1535 return(iorq ? iorq->dmaiopb : NULL); 1536 } 1537 1538 /* 1539 * xyc_piodriver 1540 * 1541 * programmed i/o driver. this function takes over the computer 1542 * and drains off the polled i/o request. it returns the status of the iorq 1543 * the caller is interesting in. 1544 */ 1545 int 1546 xyc_piodriver(xycsc, iorq) 1547 struct xyc_softc *xycsc; 1548 struct xy_iorq *iorq; 1549 1550 { 1551 int nreset = 0; 1552 int retval = 0; 1553 u_long res; 1554 #ifdef XYC_DEBUG 1555 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1556 #endif 1557 1558 while (iorq->iopb->done == 0) { 1559 1560 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1561 1562 /* we expect some progress soon */ 1563 if (res == XY_ERR_FAIL && nreset >= 2) { 1564 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1565 #ifdef XYC_DEBUG 1566 printf("xyc_piodriver: timeout\n"); 1567 #endif 1568 return (XY_ERR_FAIL); 1569 } 1570 if (res == XY_ERR_FAIL) { 1571 if (xyc_reset(xycsc, 0, 1572 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1573 XY_ERR_FAIL, 1574 0) == XY_ERR_FAIL) 1575 return (XY_ERR_FAIL); /* flushes all but POLL 1576 * requests, resets */ 1577 continue; 1578 } 1579 1580 xyc_remove_iorq(xycsc); /* may resubmit request */ 1581 1582 if (iorq->iopb->done == 0) 1583 xyc_start(xycsc, iorq); 1584 } 1585 1586 /* get return value */ 1587 1588 retval = iorq->errno; 1589 1590 #ifdef XYC_DEBUG 1591 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1592 iorq->errno, xyc_e2str(iorq->errno)); 1593 #endif 1594 1595 /* start up any bufs that have queued */ 1596 1597 xyc_start(xycsc, NULL); 1598 1599 return (retval); 1600 } 1601 1602 /* 1603 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1604 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1605 */ 1606 void 1607 xyc_xyreset(xycsc, xysc) 1608 struct xyc_softc *xycsc; 1609 struct xy_softc *xysc; 1610 1611 { 1612 struct xy_iopb tmpiopb; 1613 struct xy_iopb *iopb; 1614 int del; 1615 1616 iopb = xycsc->ciopb; 1617 1618 /* Save contents */ 1619 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1620 1621 iopb->chen = iopb->done = iopb->errs = 0; 1622 iopb->ien = 0; 1623 iopb->com = XYCMD_RST; 1624 iopb->unit = xysc->xy_drive; 1625 1626 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1627 1628 del = XYC_RESETUSEC; 1629 while (del > 0) { 1630 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1631 break; 1632 DELAY(1); 1633 del--; 1634 } 1635 1636 if (del <= 0 || iopb->errs) { 1637 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1638 xyc_e2str(iopb->errno)); 1639 del = xycsc->xyc->xyc_rsetup; 1640 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1641 panic("xyc_reset"); 1642 } else { 1643 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1644 } 1645 1646 /* Restore contents */ 1647 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1648 } 1649 1650 1651 /* 1652 * xyc_reset: reset everything: requests are marked as errors except 1653 * a polled request (which is resubmitted) 1654 */ 1655 int 1656 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1657 struct xyc_softc *xycsc; 1658 int quiet, error; 1659 struct xy_iorq *blastmode; 1660 struct xy_softc *xysc; 1661 1662 { 1663 int del = 0, lcv, retval = XY_ERR_AOK; 1664 1665 /* soft reset hardware */ 1666 1667 if (!quiet) 1668 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1669 del = xycsc->xyc->xyc_rsetup; 1670 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1671 if (del == XY_ERR_FAIL) { 1672 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1673 retval = XY_ERR_FAIL; 1674 } 1675 if (xysc) 1676 xyc_xyreset(xycsc, xysc); 1677 1678 /* fix queues based on "blast-mode" */ 1679 1680 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1681 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1682 1683 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1684 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1685 XY_STATE(iorq->mode) != XY_SUB_NORM) 1686 /* is it active? */ 1687 continue; 1688 1689 if (blastmode == XY_RSET_ALL || 1690 blastmode != iorq) { 1691 /* failed */ 1692 iorq->errno = error; 1693 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1694 switch (XY_STATE(iorq->mode)) { 1695 case XY_SUB_NORM: 1696 iorq->buf->b_error = EIO; 1697 iorq->buf->b_flags |= B_ERROR; 1698 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1699 1700 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1701 iorq->dmamap->dm_mapsize, 1702 (iorq->buf->b_flags & B_READ) 1703 ? BUS_DMASYNC_POSTREAD 1704 : BUS_DMASYNC_POSTWRITE); 1705 1706 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1707 1708 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1709 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1710 (xycsc->reqs[lcv].buf->b_bcount - 1711 xycsc->reqs[lcv].buf->b_resid)); 1712 biodone(iorq->buf); 1713 iorq->mode = XY_SUB_FREE; 1714 break; 1715 case XY_SUB_WAIT: 1716 wakeup(iorq); 1717 case XY_SUB_POLL: 1718 iorq->mode = 1719 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1720 break; 1721 } 1722 1723 } else { 1724 1725 /* resubmit, no need to do anything here */ 1726 } 1727 } 1728 1729 /* 1730 * now, if stuff is waiting, start it. 1731 * since we just reset it should go 1732 */ 1733 xyc_start(xycsc, NULL); 1734 1735 return (retval); 1736 } 1737 1738 /* 1739 * xyc_start: start waiting buffers 1740 */ 1741 1742 void 1743 xyc_start(xycsc, iorq) 1744 struct xyc_softc *xycsc; 1745 struct xy_iorq *iorq; 1746 1747 { 1748 int lcv; 1749 struct xy_softc *xy; 1750 1751 if (iorq == NULL) { 1752 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1753 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1754 if (xy->xyq.b_actf == NULL) continue; 1755 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1756 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1757 } 1758 } 1759 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1760 } 1761 1762 /* 1763 * xyc_remove_iorq: remove "done" IOPB's. 1764 */ 1765 1766 int 1767 xyc_remove_iorq(xycsc) 1768 struct xyc_softc *xycsc; 1769 1770 { 1771 int errno, rq, comm, errs; 1772 struct xyc *xyc = xycsc->xyc; 1773 u_long addr; 1774 struct xy_iopb *iopb; 1775 struct xy_iorq *iorq; 1776 struct buf *bp; 1777 1778 if (xyc->xyc_csr & XYC_DERR) { 1779 /* 1780 * DOUBLE ERROR: should never happen under normal use. This 1781 * error is so bad, you can't even tell which IOPB is bad, so 1782 * we dump them all. 1783 */ 1784 errno = XY_ERR_DERR; 1785 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1786 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1787 printf("%s: soft reset failed!\n", 1788 xycsc->sc_dev.dv_xname); 1789 panic("xyc_remove_iorq: controller DEAD"); 1790 } 1791 return (XY_ERR_AOK); 1792 } 1793 1794 /* 1795 * get iopb that is done, loop down the chain 1796 */ 1797 1798 if (xyc->xyc_csr & XYC_ERR) { 1799 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1800 } 1801 if (xyc->xyc_csr & XYC_IPND) { 1802 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1803 } 1804 1805 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1806 iorq = xycsc->xy_chain[rq]; 1807 if (iorq == NULL) break; /* done ! */ 1808 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1809 continue; /* free, or done */ 1810 iopb = iorq->iopb; 1811 if (iopb->done == 0) 1812 continue; /* not done yet */ 1813 1814 comm = iopb->com; 1815 errs = iopb->errs; 1816 1817 if (errs) 1818 iorq->errno = iopb->errno; 1819 else 1820 iorq->errno = 0; 1821 1822 /* handle non-fatal errors */ 1823 1824 if (errs && 1825 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1826 continue; /* AOK: we resubmitted it */ 1827 1828 1829 /* this iorq is now done (hasn't been restarted or anything) */ 1830 1831 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1832 xyc_perror(iorq, iopb, 0); 1833 1834 /* now, if read/write check to make sure we got all the data 1835 * we needed. (this may not be the case if we got an error in 1836 * the middle of a multisector request). */ 1837 1838 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1839 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1840 /* we just successfully processed a bad144 sector 1841 * note: if we are in bad 144 mode, the pointers have 1842 * been advanced already (see above) and are pointing 1843 * at the bad144 sector. to exit bad144 mode, we 1844 * must advance the pointers 1 sector and issue a new 1845 * request if there are still sectors left to process 1846 * 1847 */ 1848 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1849 1850 /* exit b144 mode */ 1851 iorq->mode = iorq->mode & (~XY_MODE_B144); 1852 1853 if (iorq->sectcnt) { /* more to go! */ 1854 iorq->lasterror = iorq->errno = iopb->errno = 0; 1855 iopb->errs = iopb->done = 0; 1856 iorq->tries = 0; 1857 iopb->scnt = iorq->sectcnt; 1858 iopb->cyl = iorq->blockno / 1859 iorq->xy->sectpercyl; 1860 iopb->head = 1861 (iorq->blockno / iorq->xy->nhead) % 1862 iorq->xy->nhead; 1863 iopb->sect = iorq->blockno % XYFM_BPS; 1864 addr = (u_long) iorq->dbuf; 1865 iopb->dataa = (addr & 0xffff); 1866 iopb->datar = ((addr & 0xff0000) >> 16); 1867 /* will resubit at end */ 1868 continue; 1869 } 1870 } 1871 /* final cleanup, totally done with this request */ 1872 1873 switch (XY_STATE(iorq->mode)) { 1874 case XY_SUB_NORM: 1875 bp = iorq->buf; 1876 if (errs) { 1877 bp->b_error = EIO; 1878 bp->b_flags |= B_ERROR; 1879 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1880 } else { 1881 bp->b_resid = 0; /* done */ 1882 } 1883 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1884 iorq->dmamap->dm_mapsize, 1885 (iorq->buf->b_flags & B_READ) 1886 ? BUS_DMASYNC_POSTREAD 1887 : BUS_DMASYNC_POSTWRITE); 1888 1889 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1890 1891 iorq->xy->xyq.b_actf = bp->b_actf; 1892 disk_unbusy(&iorq->xy->sc_dk, 1893 (bp->b_bcount - bp->b_resid)); 1894 iorq->mode = XY_SUB_FREE; 1895 biodone(bp); 1896 break; 1897 case XY_SUB_WAIT: 1898 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1899 wakeup(iorq); 1900 break; 1901 case XY_SUB_POLL: 1902 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1903 break; 1904 } 1905 } 1906 1907 return (XY_ERR_AOK); 1908 } 1909 1910 /* 1911 * xyc_perror: print error. 1912 * - if still_trying is true: we got an error, retried and got a 1913 * different error. in that case lasterror is the old error, 1914 * and errno is the new one. 1915 * - if still_trying is not true, then if we ever had an error it 1916 * is in lasterror. also, if iorq->errno == 0, then we recovered 1917 * from that error (otherwise iorq->errno == iorq->lasterror). 1918 */ 1919 void 1920 xyc_perror(iorq, iopb, still_trying) 1921 struct xy_iorq *iorq; 1922 struct xy_iopb *iopb; 1923 int still_trying; 1924 1925 { 1926 1927 int error = iorq->lasterror; 1928 1929 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1930 : iorq->xyc->sc_dev.dv_xname); 1931 if (iorq->buf) 1932 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1933 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1934 printf("%s %d/%d/%d: ", 1935 (iopb->com == XYCMD_RD) ? "read" : "write", 1936 iopb->cyl, iopb->head, iopb->sect); 1937 printf("%s", xyc_e2str(error)); 1938 1939 if (still_trying) 1940 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1941 else 1942 if (iorq->errno == 0) 1943 printf(" [recovered in %d tries]", iorq->tries); 1944 1945 printf("\n"); 1946 } 1947 1948 /* 1949 * xyc_error: non-fatal error encountered... recover. 1950 * return AOK if resubmitted, return FAIL if this iopb is done 1951 */ 1952 int 1953 xyc_error(xycsc, iorq, iopb, comm) 1954 struct xyc_softc *xycsc; 1955 struct xy_iorq *iorq; 1956 struct xy_iopb *iopb; 1957 int comm; 1958 1959 { 1960 int errno = iorq->errno; 1961 int erract = xyc_entoact(errno); 1962 int oldmode, advance, i; 1963 1964 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1965 oldmode = iorq->mode; 1966 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1967 /* make xyc_start ignore us */ 1968 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1969 iorq->mode = oldmode; 1970 } 1971 /* check for read/write to a sector in bad144 table if bad: redirect 1972 * request to bad144 area */ 1973 1974 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1975 (iorq->mode & XY_MODE_B144) == 0) { 1976 advance = iorq->sectcnt - iopb->scnt; 1977 XYC_ADVANCE(iorq, advance); 1978 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1979 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1980 iorq->blockno % iorq->xy->nsect)) != -1) { 1981 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1982 * redirect */ 1983 iopb->errno = iopb->done = iopb->errs = 0; 1984 iopb->scnt = 1; 1985 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1986 /* second to last acyl */ 1987 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1988 * standard */ 1989 iopb->head = i / iorq->xy->nhead; 1990 iopb->sect = i % iorq->xy->nhead; 1991 /* will resubmit when we come out of remove_iorq */ 1992 return (XY_ERR_AOK); /* recovered! */ 1993 } 1994 } 1995 1996 /* 1997 * it isn't a bad144 sector, must be real error! see if we can retry 1998 * it? 1999 */ 2000 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2001 xyc_perror(iorq, iopb, 1); /* inform of error state 2002 * change */ 2003 iorq->lasterror = errno; 2004 2005 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2006 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2007 iorq->tries++; 2008 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2009 /* will resubmit at end of remove_iorq */ 2010 return (XY_ERR_AOK); /* recovered! */ 2011 } 2012 2013 /* failed to recover from this error */ 2014 return (XY_ERR_FAIL); 2015 } 2016 2017 /* 2018 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2019 */ 2020 void 2021 xyc_tick(arg) 2022 void *arg; 2023 2024 { 2025 struct xyc_softc *xycsc = arg; 2026 int lcv, s, reset = 0; 2027 2028 /* reduce ttl for each request if one goes to zero, reset xyc */ 2029 s = splbio(); 2030 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2031 if (xycsc->reqs[lcv].mode == 0 || 2032 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2033 continue; 2034 xycsc->reqs[lcv].ttl--; 2035 if (xycsc->reqs[lcv].ttl == 0) 2036 reset = 1; 2037 } 2038 if (reset) { 2039 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2040 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2041 } 2042 splx(s); 2043 2044 /* until next time */ 2045 2046 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2047 } 2048 2049 /* 2050 * xyc_ioctlcmd: this function provides a user level interface to the 2051 * controller via ioctl. this allows "format" programs to be written 2052 * in user code, and is also useful for some debugging. we return 2053 * an error code. called at user priority. 2054 * 2055 * XXX missing a few commands (see the 7053 driver for ideas) 2056 */ 2057 int 2058 xyc_ioctlcmd(xy, dev, xio) 2059 struct xy_softc *xy; 2060 dev_t dev; 2061 struct xd_iocmd *xio; 2062 2063 { 2064 int s, rqno, dummy = 0; 2065 caddr_t dvmabuf = NULL, buf = NULL; 2066 struct xyc_softc *xycsc; 2067 int rseg, error; 2068 bus_dma_segment_t seg; 2069 2070 /* check sanity of requested command */ 2071 2072 switch (xio->cmd) { 2073 2074 case XYCMD_NOP: /* no op: everything should be zero */ 2075 if (xio->subfn || xio->dptr || xio->dlen || 2076 xio->block || xio->sectcnt) 2077 return (EINVAL); 2078 break; 2079 2080 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2081 case XYCMD_WR: 2082 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2083 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2084 return (EINVAL); 2085 break; 2086 2087 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2088 return (EINVAL); 2089 2090 break; 2091 2092 default: 2093 return (EINVAL);/* ??? */ 2094 } 2095 2096 xycsc = xy->parent; 2097 2098 /* create DVMA buffer for request if needed */ 2099 if (xio->dlen) { 2100 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2101 &seg, 1, &rseg, BUS_DMA_WAITOK); 2102 if (error) { 2103 return (error); 2104 } 2105 dvmabuf = (caddr_t)seg.ds_addr; 2106 2107 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2108 &buf, 2109 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2110 if (error) { 2111 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2112 return (error); 2113 } 2114 if (xio->cmd == XYCMD_WR) { 2115 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2116 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2117 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2118 return (error); 2119 } 2120 } 2121 } 2122 /* do it! */ 2123 2124 error = 0; 2125 s = splbio(); 2126 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2127 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2128 if (rqno == XY_ERR_FAIL) { 2129 error = EIO; 2130 goto done; 2131 } 2132 xio->errno = xycsc->ciorq->errno; 2133 xio->tries = xycsc->ciorq->tries; 2134 XYC_DONE(xycsc, dummy); 2135 2136 if (xio->cmd == XYCMD_RD) 2137 error = copyout(buf, xio->dptr, xio->dlen); 2138 2139 done: 2140 splx(s); 2141 if (dvmabuf) { 2142 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2143 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2144 } 2145 return (error); 2146 } 2147 2148 /* 2149 * xyc_e2str: convert error code number into an error string 2150 */ 2151 char * 2152 xyc_e2str(no) 2153 int no; 2154 { 2155 switch (no) { 2156 case XY_ERR_FAIL: 2157 return ("Software fatal error"); 2158 case XY_ERR_DERR: 2159 return ("DOUBLE ERROR"); 2160 case XY_ERR_AOK: 2161 return ("Successful completion"); 2162 case XY_ERR_IPEN: 2163 return("Interrupt pending"); 2164 case XY_ERR_BCFL: 2165 return("Busy conflict"); 2166 case XY_ERR_TIMO: 2167 return("Operation timeout"); 2168 case XY_ERR_NHDR: 2169 return("Header not found"); 2170 case XY_ERR_HARD: 2171 return("Hard ECC error"); 2172 case XY_ERR_ICYL: 2173 return("Illegal cylinder address"); 2174 case XY_ERR_ISEC: 2175 return("Illegal sector address"); 2176 case XY_ERR_SMAL: 2177 return("Last sector too small"); 2178 case XY_ERR_SACK: 2179 return("Slave ACK error (non-existent memory)"); 2180 case XY_ERR_CHER: 2181 return("Cylinder and head/header error"); 2182 case XY_ERR_SRTR: 2183 return("Auto-seek retry successful"); 2184 case XY_ERR_WPRO: 2185 return("Write-protect error"); 2186 case XY_ERR_UIMP: 2187 return("Unimplemented command"); 2188 case XY_ERR_DNRY: 2189 return("Drive not ready"); 2190 case XY_ERR_SZER: 2191 return("Sector count zero"); 2192 case XY_ERR_DFLT: 2193 return("Drive faulted"); 2194 case XY_ERR_ISSZ: 2195 return("Illegal sector size"); 2196 case XY_ERR_SLTA: 2197 return("Self test A"); 2198 case XY_ERR_SLTB: 2199 return("Self test B"); 2200 case XY_ERR_SLTC: 2201 return("Self test C"); 2202 case XY_ERR_SOFT: 2203 return("Soft ECC error"); 2204 case XY_ERR_SFOK: 2205 return("Soft ECC error recovered"); 2206 case XY_ERR_IHED: 2207 return("Illegal head"); 2208 case XY_ERR_DSEQ: 2209 return("Disk sequencer error"); 2210 case XY_ERR_SEEK: 2211 return("Seek error"); 2212 default: 2213 return ("Unknown error"); 2214 } 2215 } 2216 2217 int 2218 xyc_entoact(errno) 2219 2220 int errno; 2221 2222 { 2223 switch (errno) { 2224 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2225 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2226 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2227 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2228 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2229 2230 return(XY_ERA_PROG); /* program error ! */ 2231 2232 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2233 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2234 case XY_ERR_SOFT: 2235 2236 return(XY_ERA_HARD); /* hard error, retry */ 2237 2238 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2239 2240 return(XY_ERA_RSET); /* hard error reset */ 2241 2242 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2243 2244 return(XY_ERA_SOFT); /* an FYI error */ 2245 2246 case XY_ERR_WPRO: 2247 2248 return(XY_ERA_WPRO); /* write protect */ 2249 } 2250 2251 return(XY_ERA_PROG); /* ??? */ 2252 } 2253
Indexes created Tue Sep 30 20:09:53 GMT 2025