xy.c revision 1.15
1 /* $NetBSD: xy.c,v 1.15 2000/01/21 23:43:10 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 1049 unit = DISKUNIT(bp->b_dev); 1050 1051 /* check for live device */ 1052 1053 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1054 bp->b_blkno < 0 || 1055 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1056 bp->b_error = EINVAL; 1057 goto bad; 1058 } 1059 /* do we need to attach the drive? */ 1060 1061 if (xy->state == XY_DRIVE_UNKNOWN) { 1062 xa.driveno = xy->xy_drive; 1063 xa.fullmode = XY_SUB_WAIT; 1064 xa.booting = 0; 1065 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1066 if (xy->state == XY_DRIVE_UNKNOWN) { 1067 bp->b_error = EIO; 1068 goto bad; 1069 } 1070 } 1071 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1072 /* no I/O to unlabeled disks, unless raw partition */ 1073 bp->b_error = EIO; 1074 goto bad; 1075 } 1076 /* short circuit zero length request */ 1077 1078 if (bp->b_bcount == 0) 1079 goto done; 1080 1081 /* check bounds with label (disksubr.c). Determine the size of the 1082 * transfer, and make sure it is within the boundaries of the 1083 * partition. Adjust transfer if needed, and signal errors or early 1084 * completion. */ 1085 1086 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1087 (xy->flags & XY_WLABEL) != 0) <= 0) 1088 goto done; 1089 1090 /* 1091 * now we know we have a valid buf structure that we need to do I/O 1092 * on. 1093 */ 1094 s = splbio(); /* protect the queues */ 1095 1096 disksort_blkno(&xy->xyq, bp); /* XXX disksort_cylinder */ 1097 1098 /* start 'em up */ 1099 1100 xyc_start(xy->parent, NULL); 1101 1102 /* done! */ 1103 1104 splx(s); 1105 return; 1106 1107 bad: /* tells upper layers we have an error */ 1108 bp->b_flags |= B_ERROR; 1109 done: /* tells upper layers we are done with this 1110 * buf */ 1111 bp->b_resid = bp->b_bcount; 1112 biodone(bp); 1113 } 1114 /* 1115 * end of {b,c}devsw functions 1116 */ 1117 1118 /* 1119 * i n t e r r u p t f u n c t i o n 1120 * 1121 * xycintr: hardware interrupt. 1122 */ 1123 int 1124 xycintr(v) 1125 void *v; 1126 1127 { 1128 struct xyc_softc *xycsc = v; 1129 1130 /* kick the event counter */ 1131 1132 xycsc->sc_intrcnt.ev_count++; 1133 1134 /* remove as many done IOPBs as possible */ 1135 1136 xyc_remove_iorq(xycsc); 1137 1138 /* start any iorq's already waiting */ 1139 1140 xyc_start(xycsc, NULL); 1141 1142 return (1); 1143 } 1144 /* 1145 * end of interrupt function 1146 */ 1147 1148 /* 1149 * i n t e r n a l f u n c t i o n s 1150 */ 1151 1152 /* 1153 * xyc_rqinit: fill out the fields of an I/O request 1154 */ 1155 1156 inline void 1157 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1158 struct xy_iorq *rq; 1159 struct xyc_softc *xyc; 1160 struct xy_softc *xy; 1161 int md; 1162 u_long blk; 1163 int cnt; 1164 caddr_t db; 1165 struct buf *bp; 1166 { 1167 rq->xyc = xyc; 1168 rq->xy = xy; 1169 rq->ttl = XYC_MAXTTL + 10; 1170 rq->mode = md; 1171 rq->tries = rq->errno = rq->lasterror = 0; 1172 rq->blockno = blk; 1173 rq->sectcnt = cnt; 1174 rq->dbuf = db; 1175 rq->buf = bp; 1176 } 1177 1178 /* 1179 * xyc_rqtopb: load up an IOPB based on an iorq 1180 */ 1181 1182 void 1183 xyc_rqtopb(iorq, iopb, cmd, subfun) 1184 struct xy_iorq *iorq; 1185 struct xy_iopb *iopb; 1186 int cmd, subfun; 1187 1188 { 1189 u_long block, dp; 1190 1191 /* normal IOPB case, standard stuff */ 1192 1193 /* chain bit handled later */ 1194 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1195 iopb->com = cmd; 1196 iopb->errno = 0; 1197 iopb->errs = 0; 1198 iopb->done = 0; 1199 if (iorq->xy) { 1200 iopb->unit = iorq->xy->xy_drive; 1201 iopb->dt = iorq->xy->drive_type; 1202 } else { 1203 iopb->unit = 0; 1204 iopb->dt = 0; 1205 } 1206 block = iorq->blockno; 1207 if (iorq->xy == NULL || block == 0) { 1208 iopb->sect = iopb->head = iopb->cyl = 0; 1209 } else { 1210 iopb->sect = block % iorq->xy->nsect; 1211 block = block / iorq->xy->nsect; 1212 iopb->head = block % iorq->xy->nhead; 1213 block = block / iorq->xy->nhead; 1214 iopb->cyl = block; 1215 } 1216 iopb->scnt = iorq->sectcnt; 1217 dp = (u_long) iorq->dbuf; 1218 if (iorq->dbuf == NULL) { 1219 iopb->dataa = 0; 1220 iopb->datar = 0; 1221 } else { 1222 iopb->dataa = (dp & 0xffff); 1223 iopb->datar = ((dp & 0xff0000) >> 16); 1224 } 1225 iopb->subfn = subfun; 1226 } 1227 1228 1229 /* 1230 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1231 */ 1232 1233 int 1234 xyc_unbusy(xyc, del) 1235 1236 struct xyc *xyc; 1237 int del; 1238 1239 { 1240 while (del-- > 0) { 1241 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1242 break; 1243 DELAY(1); 1244 } 1245 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1246 } 1247 1248 /* 1249 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1250 * note that NORM requests are handled seperately. 1251 */ 1252 int 1253 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1254 struct xyc_softc *xycsc; 1255 int cmd, subfn, unit, block, scnt; 1256 char *dptr; 1257 int fullmode; 1258 1259 { 1260 int submode = XY_STATE(fullmode); 1261 struct xy_iorq *iorq = xycsc->ciorq; 1262 struct xy_iopb *iopb = xycsc->ciopb; 1263 1264 /* 1265 * is someone else using the control iopq wait for it if we can 1266 */ 1267 start: 1268 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1269 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1270 return(XY_ERR_FAIL); 1271 goto start; 1272 } 1273 1274 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1275 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1276 iorq->mode = XY_SUB_FREE; 1277 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1278 } 1279 1280 /* init iorq/iopb */ 1281 1282 xyc_rqinit(iorq, xycsc, 1283 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1284 fullmode, block, scnt, dptr, NULL); 1285 1286 /* load IOPB from iorq */ 1287 1288 xyc_rqtopb(iorq, iopb, cmd, subfn); 1289 1290 /* submit it for processing */ 1291 1292 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1293 1294 return(XY_ERR_AOK); 1295 } 1296 1297 /* 1298 * xyc_startbuf 1299 * start a buffer for running 1300 */ 1301 1302 int 1303 xyc_startbuf(xycsc, xysc, bp) 1304 struct xyc_softc *xycsc; 1305 struct xy_softc *xysc; 1306 struct buf *bp; 1307 1308 { 1309 int partno, error; 1310 struct xy_iorq *iorq; 1311 struct xy_iopb *iopb; 1312 u_long block; 1313 1314 iorq = xysc->xyrq; 1315 iopb = iorq->iopb; 1316 1317 /* get buf */ 1318 1319 if (bp == NULL) 1320 panic("xyc_startbuf null buf"); 1321 1322 partno = DISKPART(bp->b_dev); 1323 #ifdef XYC_DEBUG 1324 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1325 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1326 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1327 bp->b_bcount, bp->b_data); 1328 #endif 1329 1330 /* 1331 * load request. we have to calculate the correct block number based 1332 * on partition info. 1333 * 1334 * note that iorq points to the buffer as mapped into DVMA space, 1335 * where as the bp->b_data points to its non-DVMA mapping. 1336 */ 1337 1338 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1339 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1340 1341 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1342 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1343 if (error != 0) { 1344 printf("%s: warning: cannot load DMA map\n", 1345 xycsc->sc_dev.dv_xname); 1346 return (XY_ERR_FAIL); /* XXX: need some sort of 1347 * call-back scheme here? */ 1348 } 1349 1350 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1351 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1352 ? BUS_DMASYNC_PREREAD 1353 : BUS_DMASYNC_PREWRITE); 1354 1355 /* init iorq and load iopb from it */ 1356 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1357 bp->b_bcount / XYFM_BPS, 1358 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1359 bp); 1360 1361 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1362 1363 /* Instrumentation. */ 1364 disk_busy(&xysc->sc_dk); 1365 1366 return (XY_ERR_AOK); 1367 } 1368 1369 1370 /* 1371 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1372 * if ok. if it fail returns an error code. type is XY_SUB_*. 1373 * 1374 * note: caller frees iorq in all cases except NORM 1375 * 1376 * return value: 1377 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1378 * WAIT: XY_AOK (success), <error-code> (failed) 1379 * POLL: <same as WAIT> 1380 * NOQ : <same as NORM> 1381 * 1382 * there are three sources for i/o requests: 1383 * [1] xystrategy: normal block I/O, using "struct buf" system. 1384 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1385 * [3] open/ioctl: these are I/O requests done in the context of a process, 1386 * and the process should block until they are done. 1387 * 1388 * software state is stored in the iorq structure. each iorq has an 1389 * iopb structure. the hardware understands the iopb structure. 1390 * every command must go through an iopb. a 450 handles one iopb at a 1391 * time, where as a 451 can take them in chains. [the 450 claims it 1392 * can handle chains, but is appears to be buggy...] iopb are allocated 1393 * in DVMA space at boot up time. each disk gets one iopb, and the 1394 * controller gets one (for POLL and WAIT commands). what happens if 1395 * the iopb is busy? for i/o type [1], the buffers are queued at the 1396 * "buff" layer and * picked up later by the interrupt routine. for case 1397 * [2] we can only be blocked if there is a WAIT type I/O request being 1398 * run. since this can only happen when we are crashing, we wait a sec 1399 * and then steal the IOPB. for case [3] the process can sleep 1400 * on the iorq free list until some iopbs are avaliable. 1401 */ 1402 1403 1404 int 1405 xyc_submit_iorq(xycsc, iorq, type) 1406 struct xyc_softc *xycsc; 1407 struct xy_iorq *iorq; 1408 int type; 1409 1410 { 1411 struct xy_iopb *dmaiopb; 1412 1413 #ifdef XYC_DEBUG 1414 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1415 xycsc->sc_dev.dv_xname, iorq, type); 1416 #endif 1417 1418 /* first check and see if controller is busy */ 1419 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1420 #ifdef XYC_DEBUG 1421 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1422 #endif 1423 if (type == XY_SUB_NOQ) 1424 return (XY_ERR_FAIL); /* failed */ 1425 switch (type) { 1426 case XY_SUB_NORM: 1427 return XY_ERR_AOK; /* success */ 1428 case XY_SUB_WAIT: 1429 while (iorq->iopb->done == 0) { 1430 sleep(iorq, PRIBIO); 1431 } 1432 return (iorq->errno); 1433 case XY_SUB_POLL: /* steal controller */ 1434 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1435 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1436 panic("xyc_submit_iorq: stuck xyc"); 1437 printf("%s: stole controller\n", 1438 xycsc->sc_dev.dv_xname); 1439 break; 1440 default: 1441 panic("xyc_submit_iorq adding"); 1442 } 1443 } 1444 1445 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1446 if (dmaiopb == NULL) { /* nothing doing? */ 1447 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1448 return(XY_ERR_AOK); 1449 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1450 } 1451 1452 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1453 1454 /* command now running, wrap it up */ 1455 switch (type) { 1456 case XY_SUB_NORM: 1457 case XY_SUB_NOQ: 1458 return (XY_ERR_AOK); /* success */ 1459 case XY_SUB_WAIT: 1460 while (iorq->iopb->done == 0) { 1461 sleep(iorq, PRIBIO); 1462 } 1463 return (iorq->errno); 1464 case XY_SUB_POLL: 1465 return (xyc_piodriver(xycsc, iorq)); 1466 default: 1467 panic("xyc_submit_iorq wrap up"); 1468 } 1469 panic("xyc_submit_iorq"); 1470 return 0; /* not reached */ 1471 } 1472 1473 1474 /* 1475 * xyc_chain: build a chain. return dvma address of first element in 1476 * the chain. iorq != NULL: means we only want that item on the chain. 1477 */ 1478 1479 struct xy_iopb * 1480 xyc_chain(xycsc, iorq) 1481 struct xyc_softc *xycsc; 1482 struct xy_iorq *iorq; 1483 1484 { 1485 int togo, chain, hand; 1486 1487 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1488 1489 /* 1490 * promote control IOPB to the top 1491 */ 1492 if (iorq == NULL) { 1493 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1494 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1495 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1496 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1497 } 1498 1499 /* 1500 * special case: if iorq != NULL then we have a POLL or WAIT request. 1501 * we let these take priority and do them first. 1502 */ 1503 if (iorq) { 1504 xycsc->xy_chain[0] = iorq; 1505 iorq->iopb->chen = 0; 1506 return(iorq->dmaiopb); 1507 } 1508 1509 /* 1510 * NORM case: do round robin and maybe chain (if allowed and possible) 1511 */ 1512 chain = 0; 1513 hand = xycsc->xy_hand; 1514 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1515 1516 for (togo = XYC_MAXIOPB; togo > 0; 1517 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1518 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1519 1520 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1521 xycsc->iopbase[hand].done) 1522 continue; /* not ready-for-i/o */ 1523 1524 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1525 iopb = xycsc->xy_chain[chain]->iopb; 1526 iopb->chen = 0; 1527 if (chain != 0) { 1528 /* adding a link to a chain */ 1529 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1530 prev_iopb->chen = 1; 1531 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1532 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1533 } else { 1534 /* head of chain */ 1535 iorq = xycsc->xy_chain[chain]; 1536 } 1537 chain++; 1538 1539 /* quit if chaining dis-allowed */ 1540 if (xycsc->no_ols) 1541 break; 1542 } 1543 1544 return(iorq ? iorq->dmaiopb : NULL); 1545 } 1546 1547 /* 1548 * xyc_piodriver 1549 * 1550 * programmed i/o driver. this function takes over the computer 1551 * and drains off the polled i/o request. it returns the status of the iorq 1552 * the caller is interesting in. 1553 */ 1554 int 1555 xyc_piodriver(xycsc, iorq) 1556 struct xyc_softc *xycsc; 1557 struct xy_iorq *iorq; 1558 1559 { 1560 int nreset = 0; 1561 int retval = 0; 1562 u_long res; 1563 #ifdef XYC_DEBUG 1564 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1565 #endif 1566 1567 while (iorq->iopb->done == 0) { 1568 1569 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1570 1571 /* we expect some progress soon */ 1572 if (res == XY_ERR_FAIL && nreset >= 2) { 1573 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1574 #ifdef XYC_DEBUG 1575 printf("xyc_piodriver: timeout\n"); 1576 #endif 1577 return (XY_ERR_FAIL); 1578 } 1579 if (res == XY_ERR_FAIL) { 1580 if (xyc_reset(xycsc, 0, 1581 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1582 XY_ERR_FAIL, 1583 0) == XY_ERR_FAIL) 1584 return (XY_ERR_FAIL); /* flushes all but POLL 1585 * requests, resets */ 1586 continue; 1587 } 1588 1589 xyc_remove_iorq(xycsc); /* may resubmit request */ 1590 1591 if (iorq->iopb->done == 0) 1592 xyc_start(xycsc, iorq); 1593 } 1594 1595 /* get return value */ 1596 1597 retval = iorq->errno; 1598 1599 #ifdef XYC_DEBUG 1600 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1601 iorq->errno, xyc_e2str(iorq->errno)); 1602 #endif 1603 1604 /* start up any bufs that have queued */ 1605 1606 xyc_start(xycsc, NULL); 1607 1608 return (retval); 1609 } 1610 1611 /* 1612 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1613 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1614 */ 1615 void 1616 xyc_xyreset(xycsc, xysc) 1617 struct xyc_softc *xycsc; 1618 struct xy_softc *xysc; 1619 1620 { 1621 struct xy_iopb tmpiopb; 1622 struct xy_iopb *iopb; 1623 int del; 1624 1625 iopb = xycsc->ciopb; 1626 1627 /* Save contents */ 1628 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1629 1630 iopb->chen = iopb->done = iopb->errs = 0; 1631 iopb->ien = 0; 1632 iopb->com = XYCMD_RST; 1633 iopb->unit = xysc->xy_drive; 1634 1635 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1636 1637 del = XYC_RESETUSEC; 1638 while (del > 0) { 1639 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1640 break; 1641 DELAY(1); 1642 del--; 1643 } 1644 1645 if (del <= 0 || iopb->errs) { 1646 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1647 xyc_e2str(iopb->errno)); 1648 del = xycsc->xyc->xyc_rsetup; 1649 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1650 panic("xyc_reset"); 1651 } else { 1652 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1653 } 1654 1655 /* Restore contents */ 1656 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1657 } 1658 1659 1660 /* 1661 * xyc_reset: reset everything: requests are marked as errors except 1662 * a polled request (which is resubmitted) 1663 */ 1664 int 1665 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1666 struct xyc_softc *xycsc; 1667 int quiet, error; 1668 struct xy_iorq *blastmode; 1669 struct xy_softc *xysc; 1670 1671 { 1672 int del = 0, lcv, retval = XY_ERR_AOK; 1673 1674 /* soft reset hardware */ 1675 1676 if (!quiet) 1677 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1678 del = xycsc->xyc->xyc_rsetup; 1679 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1680 if (del == XY_ERR_FAIL) { 1681 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1682 retval = XY_ERR_FAIL; 1683 } 1684 if (xysc) 1685 xyc_xyreset(xycsc, xysc); 1686 1687 /* fix queues based on "blast-mode" */ 1688 1689 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1690 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1691 1692 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1693 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1694 XY_STATE(iorq->mode) != XY_SUB_NORM) 1695 /* is it active? */ 1696 continue; 1697 1698 if (blastmode == XY_RSET_ALL || 1699 blastmode != iorq) { 1700 /* failed */ 1701 iorq->errno = error; 1702 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1703 switch (XY_STATE(iorq->mode)) { 1704 case XY_SUB_NORM: 1705 iorq->buf->b_error = EIO; 1706 iorq->buf->b_flags |= B_ERROR; 1707 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1708 1709 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1710 iorq->dmamap->dm_mapsize, 1711 (iorq->buf->b_flags & B_READ) 1712 ? BUS_DMASYNC_POSTREAD 1713 : BUS_DMASYNC_POSTWRITE); 1714 1715 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1716 1717 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1718 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1719 (xycsc->reqs[lcv].buf->b_bcount - 1720 xycsc->reqs[lcv].buf->b_resid)); 1721 biodone(iorq->buf); 1722 iorq->mode = XY_SUB_FREE; 1723 break; 1724 case XY_SUB_WAIT: 1725 wakeup(iorq); 1726 case XY_SUB_POLL: 1727 iorq->mode = 1728 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1729 break; 1730 } 1731 1732 } else { 1733 1734 /* resubmit, no need to do anything here */ 1735 } 1736 } 1737 1738 /* 1739 * now, if stuff is waiting, start it. 1740 * since we just reset it should go 1741 */ 1742 xyc_start(xycsc, NULL); 1743 1744 return (retval); 1745 } 1746 1747 /* 1748 * xyc_start: start waiting buffers 1749 */ 1750 1751 void 1752 xyc_start(xycsc, iorq) 1753 struct xyc_softc *xycsc; 1754 struct xy_iorq *iorq; 1755 1756 { 1757 int lcv; 1758 struct xy_softc *xy; 1759 1760 if (iorq == NULL) { 1761 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1762 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1763 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1764 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1765 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1766 } 1767 } 1768 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1769 } 1770 1771 /* 1772 * xyc_remove_iorq: remove "done" IOPB's. 1773 */ 1774 1775 int 1776 xyc_remove_iorq(xycsc) 1777 struct xyc_softc *xycsc; 1778 1779 { 1780 int errno, rq, comm, errs; 1781 struct xyc *xyc = xycsc->xyc; 1782 u_long addr; 1783 struct xy_iopb *iopb; 1784 struct xy_iorq *iorq; 1785 struct buf *bp; 1786 1787 if (xyc->xyc_csr & XYC_DERR) { 1788 /* 1789 * DOUBLE ERROR: should never happen under normal use. This 1790 * error is so bad, you can't even tell which IOPB is bad, so 1791 * we dump them all. 1792 */ 1793 errno = XY_ERR_DERR; 1794 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1795 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1796 printf("%s: soft reset failed!\n", 1797 xycsc->sc_dev.dv_xname); 1798 panic("xyc_remove_iorq: controller DEAD"); 1799 } 1800 return (XY_ERR_AOK); 1801 } 1802 1803 /* 1804 * get iopb that is done, loop down the chain 1805 */ 1806 1807 if (xyc->xyc_csr & XYC_ERR) { 1808 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1809 } 1810 if (xyc->xyc_csr & XYC_IPND) { 1811 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1812 } 1813 1814 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1815 iorq = xycsc->xy_chain[rq]; 1816 if (iorq == NULL) break; /* done ! */ 1817 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1818 continue; /* free, or done */ 1819 iopb = iorq->iopb; 1820 if (iopb->done == 0) 1821 continue; /* not done yet */ 1822 1823 comm = iopb->com; 1824 errs = iopb->errs; 1825 1826 if (errs) 1827 iorq->errno = iopb->errno; 1828 else 1829 iorq->errno = 0; 1830 1831 /* handle non-fatal errors */ 1832 1833 if (errs && 1834 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1835 continue; /* AOK: we resubmitted it */ 1836 1837 1838 /* this iorq is now done (hasn't been restarted or anything) */ 1839 1840 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1841 xyc_perror(iorq, iopb, 0); 1842 1843 /* now, if read/write check to make sure we got all the data 1844 * we needed. (this may not be the case if we got an error in 1845 * the middle of a multisector request). */ 1846 1847 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1848 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1849 /* we just successfully processed a bad144 sector 1850 * note: if we are in bad 144 mode, the pointers have 1851 * been advanced already (see above) and are pointing 1852 * at the bad144 sector. to exit bad144 mode, we 1853 * must advance the pointers 1 sector and issue a new 1854 * request if there are still sectors left to process 1855 * 1856 */ 1857 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1858 1859 /* exit b144 mode */ 1860 iorq->mode = iorq->mode & (~XY_MODE_B144); 1861 1862 if (iorq->sectcnt) { /* more to go! */ 1863 iorq->lasterror = iorq->errno = iopb->errno = 0; 1864 iopb->errs = iopb->done = 0; 1865 iorq->tries = 0; 1866 iopb->scnt = iorq->sectcnt; 1867 iopb->cyl = iorq->blockno / 1868 iorq->xy->sectpercyl; 1869 iopb->head = 1870 (iorq->blockno / iorq->xy->nhead) % 1871 iorq->xy->nhead; 1872 iopb->sect = iorq->blockno % XYFM_BPS; 1873 addr = (u_long) iorq->dbuf; 1874 iopb->dataa = (addr & 0xffff); 1875 iopb->datar = ((addr & 0xff0000) >> 16); 1876 /* will resubit at end */ 1877 continue; 1878 } 1879 } 1880 /* final cleanup, totally done with this request */ 1881 1882 switch (XY_STATE(iorq->mode)) { 1883 case XY_SUB_NORM: 1884 bp = iorq->buf; 1885 if (errs) { 1886 bp->b_error = EIO; 1887 bp->b_flags |= B_ERROR; 1888 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1889 } else { 1890 bp->b_resid = 0; /* done */ 1891 } 1892 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1893 iorq->dmamap->dm_mapsize, 1894 (iorq->buf->b_flags & B_READ) 1895 ? BUS_DMASYNC_POSTREAD 1896 : BUS_DMASYNC_POSTWRITE); 1897 1898 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1899 1900 BUFQ_REMOVE(&iorq->xy->xyq, bp); 1901 disk_unbusy(&iorq->xy->sc_dk, 1902 (bp->b_bcount - bp->b_resid)); 1903 iorq->mode = XY_SUB_FREE; 1904 biodone(bp); 1905 break; 1906 case XY_SUB_WAIT: 1907 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1908 wakeup(iorq); 1909 break; 1910 case XY_SUB_POLL: 1911 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1912 break; 1913 } 1914 } 1915 1916 return (XY_ERR_AOK); 1917 } 1918 1919 /* 1920 * xyc_perror: print error. 1921 * - if still_trying is true: we got an error, retried and got a 1922 * different error. in that case lasterror is the old error, 1923 * and errno is the new one. 1924 * - if still_trying is not true, then if we ever had an error it 1925 * is in lasterror. also, if iorq->errno == 0, then we recovered 1926 * from that error (otherwise iorq->errno == iorq->lasterror). 1927 */ 1928 void 1929 xyc_perror(iorq, iopb, still_trying) 1930 struct xy_iorq *iorq; 1931 struct xy_iopb *iopb; 1932 int still_trying; 1933 1934 { 1935 1936 int error = iorq->lasterror; 1937 1938 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1939 : iorq->xyc->sc_dev.dv_xname); 1940 if (iorq->buf) 1941 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1942 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1943 printf("%s %d/%d/%d: ", 1944 (iopb->com == XYCMD_RD) ? "read" : "write", 1945 iopb->cyl, iopb->head, iopb->sect); 1946 printf("%s", xyc_e2str(error)); 1947 1948 if (still_trying) 1949 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1950 else 1951 if (iorq->errno == 0) 1952 printf(" [recovered in %d tries]", iorq->tries); 1953 1954 printf("\n"); 1955 } 1956 1957 /* 1958 * xyc_error: non-fatal error encountered... recover. 1959 * return AOK if resubmitted, return FAIL if this iopb is done 1960 */ 1961 int 1962 xyc_error(xycsc, iorq, iopb, comm) 1963 struct xyc_softc *xycsc; 1964 struct xy_iorq *iorq; 1965 struct xy_iopb *iopb; 1966 int comm; 1967 1968 { 1969 int errno = iorq->errno; 1970 int erract = xyc_entoact(errno); 1971 int oldmode, advance; 1972 #ifdef sparc 1973 int i; 1974 #endif 1975 1976 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1977 oldmode = iorq->mode; 1978 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1979 /* make xyc_start ignore us */ 1980 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1981 iorq->mode = oldmode; 1982 } 1983 /* check for read/write to a sector in bad144 table if bad: redirect 1984 * request to bad144 area */ 1985 1986 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1987 (iorq->mode & XY_MODE_B144) == 0) { 1988 advance = iorq->sectcnt - iopb->scnt; 1989 XYC_ADVANCE(iorq, advance); 1990 #ifdef sparc 1991 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1992 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1993 iorq->blockno % iorq->xy->nsect)) != -1) { 1994 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1995 * redirect */ 1996 iopb->errno = iopb->done = iopb->errs = 0; 1997 iopb->scnt = 1; 1998 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1999 /* second to last acyl */ 2000 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2001 * standard */ 2002 iopb->head = i / iorq->xy->nhead; 2003 iopb->sect = i % iorq->xy->nhead; 2004 /* will resubmit when we come out of remove_iorq */ 2005 return (XY_ERR_AOK); /* recovered! */ 2006 } 2007 #endif 2008 } 2009 2010 /* 2011 * it isn't a bad144 sector, must be real error! see if we can retry 2012 * it? 2013 */ 2014 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2015 xyc_perror(iorq, iopb, 1); /* inform of error state 2016 * change */ 2017 iorq->lasterror = errno; 2018 2019 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2020 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2021 iorq->tries++; 2022 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2023 /* will resubmit at end of remove_iorq */ 2024 return (XY_ERR_AOK); /* recovered! */ 2025 } 2026 2027 /* failed to recover from this error */ 2028 return (XY_ERR_FAIL); 2029 } 2030 2031 /* 2032 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2033 */ 2034 void 2035 xyc_tick(arg) 2036 void *arg; 2037 2038 { 2039 struct xyc_softc *xycsc = arg; 2040 int lcv, s, reset = 0; 2041 2042 /* reduce ttl for each request if one goes to zero, reset xyc */ 2043 s = splbio(); 2044 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2045 if (xycsc->reqs[lcv].mode == 0 || 2046 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2047 continue; 2048 xycsc->reqs[lcv].ttl--; 2049 if (xycsc->reqs[lcv].ttl == 0) 2050 reset = 1; 2051 } 2052 if (reset) { 2053 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2054 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2055 } 2056 splx(s); 2057 2058 /* until next time */ 2059 2060 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2061 } 2062 2063 /* 2064 * xyc_ioctlcmd: this function provides a user level interface to the 2065 * controller via ioctl. this allows "format" programs to be written 2066 * in user code, and is also useful for some debugging. we return 2067 * an error code. called at user priority. 2068 * 2069 * XXX missing a few commands (see the 7053 driver for ideas) 2070 */ 2071 int 2072 xyc_ioctlcmd(xy, dev, xio) 2073 struct xy_softc *xy; 2074 dev_t dev; 2075 struct xd_iocmd *xio; 2076 2077 { 2078 int s, rqno, dummy = 0; 2079 caddr_t dvmabuf = NULL, buf = NULL; 2080 struct xyc_softc *xycsc; 2081 int rseg, error; 2082 bus_dma_segment_t seg; 2083 2084 /* check sanity of requested command */ 2085 2086 switch (xio->cmd) { 2087 2088 case XYCMD_NOP: /* no op: everything should be zero */ 2089 if (xio->subfn || xio->dptr || xio->dlen || 2090 xio->block || xio->sectcnt) 2091 return (EINVAL); 2092 break; 2093 2094 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2095 case XYCMD_WR: 2096 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2097 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2098 return (EINVAL); 2099 break; 2100 2101 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2102 return (EINVAL); 2103 2104 break; 2105 2106 default: 2107 return (EINVAL);/* ??? */ 2108 } 2109 2110 xycsc = xy->parent; 2111 2112 /* create DVMA buffer for request if needed */ 2113 if (xio->dlen) { 2114 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2115 &seg, 1, &rseg, BUS_DMA_WAITOK); 2116 if (error) { 2117 return (error); 2118 } 2119 dvmabuf = (caddr_t)seg.ds_addr; 2120 2121 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2122 &buf, 2123 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2124 if (error) { 2125 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2126 return (error); 2127 } 2128 if (xio->cmd == XYCMD_WR) { 2129 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2130 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2131 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2132 return (error); 2133 } 2134 } 2135 } 2136 /* do it! */ 2137 2138 error = 0; 2139 s = splbio(); 2140 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2141 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2142 if (rqno == XY_ERR_FAIL) { 2143 error = EIO; 2144 goto done; 2145 } 2146 xio->errno = xycsc->ciorq->errno; 2147 xio->tries = xycsc->ciorq->tries; 2148 XYC_DONE(xycsc, dummy); 2149 2150 if (xio->cmd == XYCMD_RD) 2151 error = copyout(buf, xio->dptr, xio->dlen); 2152 2153 done: 2154 splx(s); 2155 if (dvmabuf) { 2156 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2157 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2158 } 2159 return (error); 2160 } 2161 2162 /* 2163 * xyc_e2str: convert error code number into an error string 2164 */ 2165 char * 2166 xyc_e2str(no) 2167 int no; 2168 { 2169 switch (no) { 2170 case XY_ERR_FAIL: 2171 return ("Software fatal error"); 2172 case XY_ERR_DERR: 2173 return ("DOUBLE ERROR"); 2174 case XY_ERR_AOK: 2175 return ("Successful completion"); 2176 case XY_ERR_IPEN: 2177 return("Interrupt pending"); 2178 case XY_ERR_BCFL: 2179 return("Busy conflict"); 2180 case XY_ERR_TIMO: 2181 return("Operation timeout"); 2182 case XY_ERR_NHDR: 2183 return("Header not found"); 2184 case XY_ERR_HARD: 2185 return("Hard ECC error"); 2186 case XY_ERR_ICYL: 2187 return("Illegal cylinder address"); 2188 case XY_ERR_ISEC: 2189 return("Illegal sector address"); 2190 case XY_ERR_SMAL: 2191 return("Last sector too small"); 2192 case XY_ERR_SACK: 2193 return("Slave ACK error (non-existent memory)"); 2194 case XY_ERR_CHER: 2195 return("Cylinder and head/header error"); 2196 case XY_ERR_SRTR: 2197 return("Auto-seek retry successful"); 2198 case XY_ERR_WPRO: 2199 return("Write-protect error"); 2200 case XY_ERR_UIMP: 2201 return("Unimplemented command"); 2202 case XY_ERR_DNRY: 2203 return("Drive not ready"); 2204 case XY_ERR_SZER: 2205 return("Sector count zero"); 2206 case XY_ERR_DFLT: 2207 return("Drive faulted"); 2208 case XY_ERR_ISSZ: 2209 return("Illegal sector size"); 2210 case XY_ERR_SLTA: 2211 return("Self test A"); 2212 case XY_ERR_SLTB: 2213 return("Self test B"); 2214 case XY_ERR_SLTC: 2215 return("Self test C"); 2216 case XY_ERR_SOFT: 2217 return("Soft ECC error"); 2218 case XY_ERR_SFOK: 2219 return("Soft ECC error recovered"); 2220 case XY_ERR_IHED: 2221 return("Illegal head"); 2222 case XY_ERR_DSEQ: 2223 return("Disk sequencer error"); 2224 case XY_ERR_SEEK: 2225 return("Seek error"); 2226 default: 2227 return ("Unknown error"); 2228 } 2229 } 2230 2231 int 2232 xyc_entoact(errno) 2233 2234 int errno; 2235 2236 { 2237 switch (errno) { 2238 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2239 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2240 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2241 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2242 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2243 2244 return(XY_ERA_PROG); /* program error ! */ 2245 2246 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2247 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2248 case XY_ERR_SOFT: 2249 2250 return(XY_ERA_HARD); /* hard error, retry */ 2251 2252 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2253 2254 return(XY_ERA_RSET); /* hard error reset */ 2255 2256 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2257 2258 return(XY_ERA_SOFT); /* an FYI error */ 2259 2260 case XY_ERR_WPRO: 2261 2262 return(XY_ERA_WPRO); /* write protect */ 2263 } 2264 2265 return(XY_ERA_PROG); /* ??? */ 2266 } 2267
Indexes created Tue Sep 30 11:09:46 GMT 2025