xy.c revision 1.2
1 /* $NetBSD: xy.c,v 1.2 1997/12/01 23:25:38 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 * id: $NetBSD: xy.c,v 1.2 1997/12/01 23:25:38 pk Exp $ 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <machine/bus.h> 81 #include <machine/autoconf.h> 82 #include <machine/sun_disklabel.h> 83 #include <machine/conf.h> 84 85 #include <dev/vme/vmevar.h> 86 #include <dev/vme/xyreg.h> 87 #include <dev/vme/xyvar.h> 88 #include <dev/vme/xio.h> 89 90 #include "locators.h" 91 92 /* 93 * macros 94 */ 95 96 /* 97 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 98 */ 99 #define XYC_GO(XYC, ADDR) { \ 100 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 101 (ADDR) = ((ADDR) >> 8); \ 102 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_reloc_hi = (ADDR); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errno; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 150 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 151 char *xyc_e2str __P((int)); 152 int xyc_entoact __P((int)); 153 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int)); 155 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 156 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 157 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 158 int xyc_remove_iorq __P((struct xyc_softc *)); 159 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *)); 161 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 caddr_t, struct buf *)); 164 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 165 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 166 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 167 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 168 void xyc_tick __P((void *)); 169 int xyc_unbusy __P((struct xyc *, int)); 170 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 171 172 /* machine interrupt hook */ 173 int xycintr __P((void *)); 174 175 /* autoconf */ 176 int xycmatch __P((struct device *, struct cfdata *, void *)); 177 void xycattach __P((struct device *, struct device *, void *)); 178 int xymatch __P((struct device *, struct cfdata *, void *)); 179 void xyattach __P((struct device *, struct device *, void *)); 180 181 static void xydummystrat __P((struct buf *)); 182 int xygetdisklabel __P((struct xy_softc *, void *)); 183 184 /* 185 * cfdrivers: device driver interface to autoconfig 186 */ 187 188 struct cfattach xyc_ca = { 189 sizeof(struct xyc_softc), xycmatch, xycattach 190 }; 191 192 struct cfdriver xyc_cd = { 193 NULL, "xyc", DV_DULL 194 }; 195 196 struct cfattach xy_ca = { 197 sizeof(struct xy_softc), xymatch, xyattach 198 }; 199 200 struct cfdriver xy_cd = { 201 NULL, "xy", DV_DISK 202 }; 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 struct sun_disklabel *sdl; 240 241 /* We already have the label data in `b'; setup for dummy strategy */ 242 xy_labeldata = b; 243 244 /* Required parameter for readdisklabel() */ 245 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 246 247 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 248 xydummystrat, 249 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 250 if (err) { 251 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 252 return(XY_ERR_FAIL); 253 } 254 255 /* 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 printf("%s: WARNING: no `pcyl' in disk label.\n", 261 xy->sc_dev.dv_xname); 262 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 263 xy->sc_dk.dk_label->d_acylinders; 264 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 265 xy->sc_dev.dv_xname, xy->pcyl); 266 } 267 268 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 269 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 270 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 271 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 272 xy->sectpercyl = xy->nhead * xy->nsect; 273 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 274 * sun->bsd */ 275 return(XY_ERR_AOK); 276 } 277 278 /* 279 * end: disk label fix code (XXX) 280 */ 281 282 /* 283 * a u t o c o n f i g f u n c t i o n s 284 */ 285 286 /* 287 * xycmatch: determine if xyc is present or not. we do a 288 * soft reset to detect the xyc. 289 */ 290 291 int xycmatch(parent, cf, aux) 292 struct device *parent; 293 struct cfdata *cf; 294 void *aux; 295 { 296 struct vme_attach_args *va = aux; 297 vme_chipset_tag_t ct = va->vma_chipset_tag; 298 bus_space_tag_t bt = va->vma_bustag; 299 struct xyc *xyc; 300 vme_mod_t mod; 301 302 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 303 304 xyc = (struct xyc *) va->vma_reg[0]; 305 if (vme_bus_probe(ct, bt, (vme_addr_t)&xyc->xyc_rsetup, 1, mod)) { 306 if (xyc_unbusy(xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 307 return(0); 308 return (1); 309 } 310 return (0); 311 } 312 313 /* 314 * xycattach: attach controller 315 */ 316 void 317 xycattach(parent, self, aux) 318 struct device *parent, *self; 319 void *aux; 320 321 { 322 struct vme_attach_args *va = aux; 323 vme_chipset_tag_t ct = va->vma_chipset_tag; 324 bus_space_tag_t bt = va->vma_bustag; 325 bus_space_handle_t bh; 326 vme_intr_handle_t ih; 327 vme_mod_t mod; 328 struct xyc_softc *xyc = (void *) self; 329 struct xyc_attach_args xa; 330 int lcv, res, pbsz, error; 331 bus_dma_segment_t seg; 332 int rseg; 333 334 /* get addressing and intr level stuff from autoconfig and load it 335 * into our xyc_softc. */ 336 337 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 338 339 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 340 mod, bt, &bh) != 0) 341 panic("xyc: vme_map"); 342 343 xyc->xyc = (struct xyc *) bh; 344 xyc->ipl = va->vma_pri; 345 xyc->vector = va->vma_vec; 346 printf(" pri %d", va->vma_pri); 347 xyc->no_ols = 0; /* XXX should be from config */ 348 349 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 350 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 351 352 /* 353 * allocate and zero buffers 354 * check boundaries of the KVA's ... all IOPBs must reside in 355 * the same 64K region. 356 */ 357 358 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 359 360 error = bus_dmamem_alloc( 361 xyc->dmatag, 362 pbsz, /* size */ 363 64*1024, /* boundary */ 364 0, /* alignment */ 365 &seg, 366 1, /* # of segments */ 367 &rseg, /* actual # of segments */ 368 BUS_DMA_NOWAIT); 369 if (error) { 370 printf("%s: DMA buffer map error %d\n", 371 xyc->sc_dev.dv_xname, error); 372 return; 373 } 374 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 375 376 error = bus_dmamem_map( 377 xyc->dmatag, 378 &seg, 379 rseg, 380 XYC_MAXIOPB * sizeof(struct xy_iopb), 381 (caddr_t *)&xyc->iopbase, 382 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC); 383 if (error) { 384 bus_dmamem_free(xyc->dmatag, &seg, rseg); 385 printf("%s: DMA buffer map error %d\n", 386 xyc->sc_dev.dv_xname, error); 387 return; 388 } 389 bzero(xyc->iopbase, pbsz); 390 391 xyc->reqs = (struct xy_iorq *) 392 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 393 if (xyc->reqs == NULL) 394 panic("xyc malloc"); 395 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 396 397 /* 398 * init iorq to iopb pointers, and non-zero fields in the 399 * iopb which never change. 400 */ 401 402 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 403 xyc->xy_chain[lcv] = NULL; 404 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 405 xyc->iopbase[lcv].asr = 1; /* always the same */ 406 xyc->iopbase[lcv].eef = 1; /* always the same */ 407 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 408 xyc->iopbase[lcv].aud = 1; /* always the same */ 409 xyc->iopbase[lcv].relo = 1; /* always the same */ 410 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 411 412 error = bus_dmamap_create( 413 xyc->dmatag, 414 MAXPHYS, /* size */ 415 1, /* nsegments */ 416 MAXPHYS, /* maxsegsz */ 417 0, /* boundary */ 418 BUS_DMA_NOWAIT, 419 &xyc->reqs[lcv].dmamap); 420 if (error) { 421 printf("%s: DMA buffer map create error %d\n", 422 xyc->sc_dev.dv_xname, error); 423 return; 424 } 425 } 426 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 427 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 428 xyc->xy_hand = 0; 429 430 /* read controller parameters and insure we have a 450/451 */ 431 432 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 433 res = xyc->ciopb->ctyp; 434 XYC_DONE(xyc, error); 435 if (res != XYCT_450) { 436 if (error) 437 printf(": %s: ", xyc_e2str(error)); 438 printf(": doesn't identify as a 450/451\n"); 439 return; 440 } 441 printf(": Xylogics 450/451"); 442 if (xyc->no_ols) 443 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 444 printf("\n"); 445 if (error) { 446 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 447 xyc_e2str(error)); 448 return; 449 } 450 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 451 printf("%s: 24 bit addressing turned off\n", 452 xyc->sc_dev.dv_xname); 453 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 454 printf("to enable 24 bit mode and this driver\n"); 455 return; 456 } 457 458 /* link in interrupt with higher level software */ 459 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 460 vme_intr_establish(ct, ih, xycintr, xyc); 461 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 462 463 464 /* now we must look for disks using autoconfig */ 465 xa.fullmode = XY_SUB_POLL; 466 xa.booting = 1; 467 468 #if 0 /* XXX - deal with this disksubr */ 469 if (ca->ca_ra.ra_bp && ca->ca_ra.ra_bp->val[0] == -1 && 470 ca->ca_ra.ra_bp->val[1] == xyc->sc_dev.dv_unit) { 471 bootpath_store(1, ca->ca_ra.ra_bp + 1); /* advance bootpath */ 472 } 473 #endif 474 475 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 476 (void) config_found(self, (void *) &xa, NULL); 477 478 #if 0 479 bootpath_store(1, NULL); 480 #endif 481 482 /* start the watchdog clock */ 483 timeout(xyc_tick, xyc, XYC_TICKCNT); 484 485 } 486 487 /* 488 * xymatch: probe for disk. 489 * 490 * note: we almost always say disk is present. this allows us to 491 * spin up and configure a disk after the system is booted (we can 492 * call xyattach!). 493 */ 494 int 495 xymatch(parent, cf, aux) 496 struct device *parent; 497 struct cfdata *cf; 498 void *aux; 499 { 500 struct xyc_attach_args *xa = aux; 501 502 /* looking for autoconf wildcard or exact match */ 503 504 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 505 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 506 return 0; 507 508 return 1; 509 510 } 511 512 /* 513 * xyattach: attach a disk. this can be called from autoconf and also 514 * from xyopen/xystrategy. 515 */ 516 void 517 xyattach(parent, self, aux) 518 struct device *parent, *self; 519 void *aux; 520 521 { 522 struct xy_softc *xy = (void *) self, *oxy; 523 struct xyc_softc *xyc = (void *) parent; 524 struct xyc_attach_args *xa = aux; 525 int spt, mb, blk, lcv, fmode, s = 0, newstate; 526 struct dkbad *dkb; 527 struct bootpath *bp; 528 int rseg, error; 529 bus_dma_segment_t seg; 530 caddr_t dmaddr; 531 caddr_t buf; 532 533 /* 534 * Always re-initialize the disk structure. We want statistics 535 * to start with a clean slate. 536 */ 537 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 538 xy->sc_dk.dk_driver = &xydkdriver; 539 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 540 541 /* if booting, init the xy_softc */ 542 543 if (xa->booting) { 544 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 545 xy->flags = 0; 546 xy->parent = xyc; 547 548 /* init queue of waiting bufs */ 549 550 xy->xyq.b_active = 0; 551 xy->xyq.b_actf = 0; 552 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 553 554 xy->xyrq = &xyc->reqs[xa->driveno]; 555 556 } 557 xy->xy_drive = xa->driveno; 558 fmode = xa->fullmode; 559 xyc->sc_drives[xa->driveno] = xy; 560 561 /* if not booting, make sure we are the only process in the attach for 562 * this drive. if locked out, sleep on it. */ 563 564 if (!xa->booting) { 565 s = splbio(); 566 while (xy->state == XY_DRIVE_ATTACHING) { 567 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 568 splx(s); 569 return; 570 } 571 } 572 printf("%s at %s", 573 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 574 } 575 576 /* we now have control */ 577 xy->state = XY_DRIVE_ATTACHING; 578 newstate = XY_DRIVE_UNKNOWN; 579 580 buf = NULL; 581 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 582 &seg, 1, &rseg, BUS_DMA_NOWAIT); 583 if (error) { 584 printf("%s: DMA buffer alloc error %d\n", 585 xy->sc_dev.dv_xname, error); 586 goto done; 587 } 588 dmaddr = (caddr_t)seg.ds_addr; 589 590 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 591 &buf, 592 BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC); 593 if (error) { 594 printf("%s: DMA buffer alloc error %d\n", 595 xy->sc_dev.dv_xname, error); 596 bus_dmamem_free(xyc->dmatag, &seg, rseg); 597 goto done; 598 } 599 600 601 /* first try and reset the drive */ 602 603 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 604 XYC_DONE(xyc, error); 605 if (error == XY_ERR_DNRY) { 606 printf(" drive %d: off-line\n", xa->driveno); 607 goto done; 608 } 609 if (error) { 610 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 611 goto done; 612 } 613 printf(" drive %d: ready", xa->driveno); 614 615 /* 616 * now set drive parameters (to semi-bogus values) so we can read the 617 * disk label. 618 */ 619 xy->pcyl = xy->ncyl = 1; 620 xy->acyl = 0; 621 xy->nhead = 1; 622 xy->nsect = 1; 623 xy->sectpercyl = 1; 624 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 625 xy->dkb.bt_bad[lcv].bt_cyl = 626 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 627 628 /* read disk label */ 629 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 630 xy->drive_type++) { 631 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 632 dmaddr, fmode); 633 XYC_DONE(xyc, error); 634 if (error == XY_ERR_AOK) break; 635 } 636 637 if (error != XY_ERR_AOK) { 638 printf("\n%s: reading disk label failed: %s\n", 639 xy->sc_dev.dv_xname, xyc_e2str(error)); 640 goto done; 641 } 642 printf(" (drive type %d)\n", xy->drive_type); 643 644 newstate = XY_DRIVE_NOLABEL; 645 646 xy->hw_spt = spt = 0; /* XXX needed ? */ 647 /* Attach the disk: must be before getdisklabel to malloc label */ 648 disk_attach(&xy->sc_dk); 649 650 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 651 goto done; 652 653 /* inform the user of what is up */ 654 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 655 buf, xy->pcyl); 656 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 657 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 658 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 659 XYFM_BPS); 660 661 /* 662 * 450/451 stupidity: the drive type is encoded into the format 663 * of the disk. the drive type in the IOPB must match the drive 664 * type in the format, or you will not be able to do I/O to the 665 * disk (you get header not found errors). if you have two drives 666 * of different sizes that have the same drive type in their 667 * formatting then you are out of luck. 668 * 669 * this problem was corrected in the 753/7053. 670 */ 671 672 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 673 oxy = xyc->sc_drives[lcv]; 674 if (oxy == NULL || oxy == xy) continue; 675 if (oxy->drive_type != xy->drive_type) continue; 676 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 677 xy->nhead != oxy->nhead) { 678 printf("%s: %s and %s must be the same size!\n", 679 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 680 oxy->sc_dev.dv_xname); 681 panic("xy drive size mismatch"); 682 } 683 } 684 685 686 /* now set the real drive parameters! */ 687 688 blk = (xy->nsect - 1) + 689 ((xy->nhead - 1) * xy->nsect) + 690 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 691 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 692 XYC_DONE(xyc, error); 693 if (error) { 694 printf("%s: write drive size failed: %s\n", 695 xy->sc_dev.dv_xname, xyc_e2str(error)); 696 goto done; 697 } 698 newstate = XY_DRIVE_ONLINE; 699 700 /* 701 * read bad144 table. this table resides on the first sector of the 702 * last track of the disk (i.e. second cyl of "acyl" area). 703 */ 704 705 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 706 /* last cyl */ 707 (xy->nhead - 1) * xy->nsect; /* last head */ 708 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 709 dmaddr, fmode); 710 XYC_DONE(xyc, error); 711 if (error) { 712 printf("%s: reading bad144 failed: %s\n", 713 xy->sc_dev.dv_xname, xyc_e2str(error)); 714 goto done; 715 } 716 717 /* check dkbad for sanity */ 718 dkb = (struct dkbad *) buf; 719 for (lcv = 0; lcv < 126; lcv++) { 720 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 721 dkb->bt_bad[lcv].bt_cyl == 0) && 722 dkb->bt_bad[lcv].bt_trksec == 0xffff) 723 continue; /* blank */ 724 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 725 break; 726 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 727 break; 728 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 729 break; 730 } 731 if (lcv != 126) { 732 printf("%s: warning: invalid bad144 sector!\n", 733 xy->sc_dev.dv_xname); 734 } else { 735 bcopy(buf, &xy->dkb, XYFM_BPS); 736 } 737 738 if (xa->booting) { 739 /* restore bootpath! (do this via attach_args again?)*/ 740 bp = bootpath_store(0, NULL); 741 if (bp && strcmp("xy", bp->name) == 0 && 742 xy->xy_drive == bp->val[0]) 743 bp->dev = &xy->sc_dev; 744 } 745 746 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 747 748 done: 749 if (buf != NULL) { 750 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 751 bus_dmamem_free(xyc->dmatag, &seg, rseg); 752 } 753 754 xy->state = newstate; 755 if (!xa->booting) { 756 wakeup(&xy->state); 757 splx(s); 758 } 759 } 760 761 /* 762 * end of autoconfig functions 763 */ 764 765 /* 766 * { b , c } d e v s w f u n c t i o n s 767 */ 768 769 /* 770 * xyclose: close device 771 */ 772 int 773 xyclose(dev, flag, fmt, p) 774 dev_t dev; 775 int flag, fmt; 776 struct proc *p; 777 778 { 779 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 780 int part = DISKPART(dev); 781 782 /* clear mask bits */ 783 784 switch (fmt) { 785 case S_IFCHR: 786 xy->sc_dk.dk_copenmask &= ~(1 << part); 787 break; 788 case S_IFBLK: 789 xy->sc_dk.dk_bopenmask &= ~(1 << part); 790 break; 791 } 792 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 793 794 return 0; 795 } 796 797 /* 798 * xydump: crash dump system 799 */ 800 int 801 xydump(dev, blkno, va, size) 802 dev_t dev; 803 daddr_t blkno; 804 caddr_t va; 805 size_t size; 806 { 807 int unit, part; 808 struct xy_softc *xy; 809 810 unit = DISKUNIT(dev); 811 if (unit >= xy_cd.cd_ndevs) 812 return ENXIO; 813 part = DISKPART(dev); 814 815 xy = xy_cd.cd_devs[unit]; 816 817 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 818 'a' + part); 819 820 return ENXIO; 821 822 /* outline: globals: "dumplo" == sector number of partition to start 823 * dump at (convert to physical sector with partition table) 824 * "dumpsize" == size of dump in clicks "physmem" == size of physical 825 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 826 * physmem) 827 * 828 * dump a copy of physical memory to the dump device starting at sector 829 * "dumplo" in the swap partition (make sure > 0). map in pages as 830 * we go. use polled I/O. 831 * 832 * XXX how to handle NON_CONTIG? */ 833 834 } 835 836 /* 837 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 838 */ 839 int 840 xyioctl(dev, command, addr, flag, p) 841 dev_t dev; 842 u_long command; 843 caddr_t addr; 844 int flag; 845 struct proc *p; 846 847 { 848 struct xy_softc *xy; 849 struct xd_iocmd *xio; 850 int error, s, unit; 851 852 unit = DISKUNIT(dev); 853 854 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 855 return (ENXIO); 856 857 /* switch on ioctl type */ 858 859 switch (command) { 860 case DIOCSBAD: /* set bad144 info */ 861 if ((flag & FWRITE) == 0) 862 return EBADF; 863 s = splbio(); 864 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 865 splx(s); 866 return 0; 867 868 case DIOCGDINFO: /* get disk label */ 869 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 870 return 0; 871 872 case DIOCGPART: /* get partition info */ 873 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 874 ((struct partinfo *) addr)->part = 875 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 876 return 0; 877 878 case DIOCSDINFO: /* set disk label */ 879 if ((flag & FWRITE) == 0) 880 return EBADF; 881 error = setdisklabel(xy->sc_dk.dk_label, 882 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 883 xy->sc_dk.dk_cpulabel); 884 if (error == 0) { 885 if (xy->state == XY_DRIVE_NOLABEL) 886 xy->state = XY_DRIVE_ONLINE; 887 } 888 return error; 889 890 case DIOCWLABEL: /* change write status of disk label */ 891 if ((flag & FWRITE) == 0) 892 return EBADF; 893 if (*(int *) addr) 894 xy->flags |= XY_WLABEL; 895 else 896 xy->flags &= ~XY_WLABEL; 897 return 0; 898 899 case DIOCWDINFO: /* write disk label */ 900 if ((flag & FWRITE) == 0) 901 return EBADF; 902 error = setdisklabel(xy->sc_dk.dk_label, 903 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 904 xy->sc_dk.dk_cpulabel); 905 if (error == 0) { 906 if (xy->state == XY_DRIVE_NOLABEL) 907 xy->state = XY_DRIVE_ONLINE; 908 909 /* Simulate opening partition 0 so write succeeds. */ 910 xy->sc_dk.dk_openmask |= (1 << 0); 911 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 912 xystrategy, xy->sc_dk.dk_label, 913 xy->sc_dk.dk_cpulabel); 914 xy->sc_dk.dk_openmask = 915 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 916 } 917 return error; 918 919 case DIOSXDCMD: 920 xio = (struct xd_iocmd *) addr; 921 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 922 return (error); 923 return (xyc_ioctlcmd(xy, dev, xio)); 924 925 default: 926 return ENOTTY; 927 } 928 } 929 930 /* 931 * xyopen: open drive 932 */ 933 934 int 935 xyopen(dev, flag, fmt, p) 936 dev_t dev; 937 int flag, fmt; 938 struct proc *p; 939 { 940 int unit, part; 941 struct xy_softc *xy; 942 struct xyc_attach_args xa; 943 944 /* first, could it be a valid target? */ 945 946 unit = DISKUNIT(dev); 947 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 948 return (ENXIO); 949 part = DISKPART(dev); 950 951 /* do we need to attach the drive? */ 952 953 if (xy->state == XY_DRIVE_UNKNOWN) { 954 xa.driveno = xy->xy_drive; 955 xa.fullmode = XY_SUB_WAIT; 956 xa.booting = 0; 957 xyattach((struct device *) xy->parent, 958 (struct device *) xy, &xa); 959 if (xy->state == XY_DRIVE_UNKNOWN) { 960 return (EIO); 961 } 962 } 963 /* check for partition */ 964 965 if (part != RAW_PART && 966 (part >= xy->sc_dk.dk_label->d_npartitions || 967 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 968 return (ENXIO); 969 } 970 /* set open masks */ 971 972 switch (fmt) { 973 case S_IFCHR: 974 xy->sc_dk.dk_copenmask |= (1 << part); 975 break; 976 case S_IFBLK: 977 xy->sc_dk.dk_bopenmask |= (1 << part); 978 break; 979 } 980 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 981 982 return 0; 983 } 984 985 int 986 xyread(dev, uio, flags) 987 dev_t dev; 988 struct uio *uio; 989 int flags; 990 { 991 992 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 993 } 994 995 int 996 xywrite(dev, uio, flags) 997 dev_t dev; 998 struct uio *uio; 999 int flags; 1000 { 1001 1002 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1003 } 1004 1005 1006 /* 1007 * xysize: return size of a partition for a dump 1008 */ 1009 1010 int 1011 xysize(dev) 1012 dev_t dev; 1013 1014 { 1015 struct xy_softc *xysc; 1016 int unit, part, size, omask; 1017 1018 /* valid unit? */ 1019 unit = DISKUNIT(dev); 1020 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1021 return (-1); 1022 1023 part = DISKPART(dev); 1024 omask = xysc->sc_dk.dk_openmask & (1 << part); 1025 1026 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1027 return (-1); 1028 1029 /* do it */ 1030 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1031 size = -1; /* only give valid size for swap partitions */ 1032 else 1033 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1034 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1035 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1036 return (-1); 1037 return (size); 1038 } 1039 1040 /* 1041 * xystrategy: buffering system interface to xy. 1042 */ 1043 1044 void 1045 xystrategy(bp) 1046 struct buf *bp; 1047 1048 { 1049 struct xy_softc *xy; 1050 int s, unit; 1051 struct xyc_attach_args xa; 1052 1053 unit = DISKUNIT(bp->b_dev); 1054 1055 /* check for live device */ 1056 1057 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1058 bp->b_blkno < 0 || 1059 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1060 bp->b_error = EINVAL; 1061 goto bad; 1062 } 1063 /* do we need to attach the drive? */ 1064 1065 if (xy->state == XY_DRIVE_UNKNOWN) { 1066 xa.driveno = xy->xy_drive; 1067 xa.fullmode = XY_SUB_WAIT; 1068 xa.booting = 0; 1069 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1070 if (xy->state == XY_DRIVE_UNKNOWN) { 1071 bp->b_error = EIO; 1072 goto bad; 1073 } 1074 } 1075 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1076 /* no I/O to unlabeled disks, unless raw partition */ 1077 bp->b_error = EIO; 1078 goto bad; 1079 } 1080 /* short circuit zero length request */ 1081 1082 if (bp->b_bcount == 0) 1083 goto done; 1084 1085 /* check bounds with label (disksubr.c). Determine the size of the 1086 * transfer, and make sure it is within the boundaries of the 1087 * partition. Adjust transfer if needed, and signal errors or early 1088 * completion. */ 1089 1090 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1091 (xy->flags & XY_WLABEL) != 0) <= 0) 1092 goto done; 1093 1094 /* 1095 * now we know we have a valid buf structure that we need to do I/O 1096 * on. 1097 */ 1098 s = splbio(); /* protect the queues */ 1099 1100 disksort(&xy->xyq, bp); 1101 1102 /* start 'em up */ 1103 1104 xyc_start(xy->parent, NULL); 1105 1106 /* done! */ 1107 1108 splx(s); 1109 return; 1110 1111 bad: /* tells upper layers we have an error */ 1112 bp->b_flags |= B_ERROR; 1113 done: /* tells upper layers we are done with this 1114 * buf */ 1115 bp->b_resid = bp->b_bcount; 1116 biodone(bp); 1117 } 1118 /* 1119 * end of {b,c}devsw functions 1120 */ 1121 1122 /* 1123 * i n t e r r u p t f u n c t i o n 1124 * 1125 * xycintr: hardware interrupt. 1126 */ 1127 int 1128 xycintr(v) 1129 void *v; 1130 1131 { 1132 struct xyc_softc *xycsc = v; 1133 1134 /* kick the event counter */ 1135 1136 xycsc->sc_intrcnt.ev_count++; 1137 1138 /* remove as many done IOPBs as possible */ 1139 1140 xyc_remove_iorq(xycsc); 1141 1142 /* start any iorq's already waiting */ 1143 1144 xyc_start(xycsc, NULL); 1145 1146 return (1); 1147 } 1148 /* 1149 * end of interrupt function 1150 */ 1151 1152 /* 1153 * i n t e r n a l f u n c t i o n s 1154 */ 1155 1156 /* 1157 * xyc_rqinit: fill out the fields of an I/O request 1158 */ 1159 1160 inline void 1161 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1162 struct xy_iorq *rq; 1163 struct xyc_softc *xyc; 1164 struct xy_softc *xy; 1165 int md; 1166 u_long blk; 1167 int cnt; 1168 caddr_t db; 1169 struct buf *bp; 1170 { 1171 rq->xyc = xyc; 1172 rq->xy = xy; 1173 rq->ttl = XYC_MAXTTL + 10; 1174 rq->mode = md; 1175 rq->tries = rq->errno = rq->lasterror = 0; 1176 rq->blockno = blk; 1177 rq->sectcnt = cnt; 1178 rq->dbuf = db; 1179 rq->buf = bp; 1180 } 1181 1182 /* 1183 * xyc_rqtopb: load up an IOPB based on an iorq 1184 */ 1185 1186 void 1187 xyc_rqtopb(iorq, iopb, cmd, subfun) 1188 struct xy_iorq *iorq; 1189 struct xy_iopb *iopb; 1190 int cmd, subfun; 1191 1192 { 1193 u_long block, dp; 1194 1195 /* normal IOPB case, standard stuff */ 1196 1197 /* chain bit handled later */ 1198 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1199 iopb->com = cmd; 1200 iopb->errno = 0; 1201 iopb->errs = 0; 1202 iopb->done = 0; 1203 if (iorq->xy) { 1204 iopb->unit = iorq->xy->xy_drive; 1205 iopb->dt = iorq->xy->drive_type; 1206 } else { 1207 iopb->unit = 0; 1208 iopb->dt = 0; 1209 } 1210 block = iorq->blockno; 1211 if (iorq->xy == NULL || block == 0) { 1212 iopb->sect = iopb->head = iopb->cyl = 0; 1213 } else { 1214 iopb->sect = block % iorq->xy->nsect; 1215 block = block / iorq->xy->nsect; 1216 iopb->head = block % iorq->xy->nhead; 1217 block = block / iorq->xy->nhead; 1218 iopb->cyl = block; 1219 } 1220 iopb->scnt = iorq->sectcnt; 1221 dp = (u_long) iorq->dbuf; 1222 if (iorq->dbuf == NULL) { 1223 iopb->dataa = 0; 1224 iopb->datar = 0; 1225 } else { 1226 iopb->dataa = (dp & 0xffff); 1227 iopb->datar = ((dp & 0xff0000) >> 16); 1228 } 1229 iopb->subfn = subfun; 1230 } 1231 1232 1233 /* 1234 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1235 */ 1236 1237 int 1238 xyc_unbusy(xyc, del) 1239 1240 struct xyc *xyc; 1241 int del; 1242 1243 { 1244 while (del-- > 0) { 1245 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1246 break; 1247 DELAY(1); 1248 } 1249 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1250 } 1251 1252 /* 1253 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1254 * note that NORM requests are handled seperately. 1255 */ 1256 int 1257 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1258 struct xyc_softc *xycsc; 1259 int cmd, subfn, unit, block, scnt; 1260 char *dptr; 1261 int fullmode; 1262 1263 { 1264 int submode = XY_STATE(fullmode); 1265 struct xy_iorq *iorq = xycsc->ciorq; 1266 struct xy_iopb *iopb = xycsc->ciopb; 1267 1268 /* 1269 * is someone else using the control iopq wait for it if we can 1270 */ 1271 start: 1272 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1273 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1274 return(XY_ERR_FAIL); 1275 goto start; 1276 } 1277 1278 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1279 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1280 iorq->mode = XY_SUB_FREE; 1281 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1282 } 1283 1284 /* init iorq/iopb */ 1285 1286 xyc_rqinit(iorq, xycsc, 1287 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1288 fullmode, block, scnt, dptr, NULL); 1289 1290 /* load IOPB from iorq */ 1291 1292 xyc_rqtopb(iorq, iopb, cmd, subfn); 1293 1294 /* submit it for processing */ 1295 1296 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1297 1298 return(XY_ERR_AOK); 1299 } 1300 1301 /* 1302 * xyc_startbuf 1303 * start a buffer for running 1304 */ 1305 1306 int 1307 xyc_startbuf(xycsc, xysc, bp) 1308 struct xyc_softc *xycsc; 1309 struct xy_softc *xysc; 1310 struct buf *bp; 1311 1312 { 1313 int partno, error; 1314 struct xy_iorq *iorq; 1315 struct xy_iopb *iopb; 1316 u_long block; 1317 1318 iorq = xysc->xyrq; 1319 iopb = iorq->iopb; 1320 1321 /* get buf */ 1322 1323 if (bp == NULL) 1324 panic("xyc_startbuf null buf"); 1325 1326 partno = DISKPART(bp->b_dev); 1327 #ifdef XYC_DEBUG 1328 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1329 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1330 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1331 bp->b_bcount, bp->b_data); 1332 #endif 1333 1334 /* 1335 * load request. we have to calculate the correct block number based 1336 * on partition info. 1337 * 1338 * note that iorq points to the buffer as mapped into DVMA space, 1339 * where as the bp->b_data points to its non-DVMA mapping. 1340 */ 1341 1342 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1343 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1344 1345 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1346 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1347 if (error) { 1348 printf("%s: warning: cannot load DMA map\n", 1349 xycsc->sc_dev.dv_xname); 1350 return (XY_ERR_FAIL); /* XXX: need some sort of 1351 * call-back scheme here? */ 1352 } 1353 1354 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1355 (bp->b_flags & B_READ) 1356 ? BUS_DMASYNC_PREREAD 1357 : BUS_DMASYNC_PREWRITE); 1358 1359 /* init iorq and load iopb from it */ 1360 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1361 bp->b_bcount / XYFM_BPS, 1362 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1363 bp); 1364 1365 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1366 1367 /* Instrumentation. */ 1368 disk_busy(&xysc->sc_dk); 1369 1370 return (XY_ERR_AOK); 1371 } 1372 1373 1374 /* 1375 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1376 * if ok. if it fail returns an error code. type is XY_SUB_*. 1377 * 1378 * note: caller frees iorq in all cases except NORM 1379 * 1380 * return value: 1381 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1382 * WAIT: XY_AOK (success), <error-code> (failed) 1383 * POLL: <same as WAIT> 1384 * NOQ : <same as NORM> 1385 * 1386 * there are three sources for i/o requests: 1387 * [1] xystrategy: normal block I/O, using "struct buf" system. 1388 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1389 * [3] open/ioctl: these are I/O requests done in the context of a process, 1390 * and the process should block until they are done. 1391 * 1392 * software state is stored in the iorq structure. each iorq has an 1393 * iopb structure. the hardware understands the iopb structure. 1394 * every command must go through an iopb. a 450 handles one iopb at a 1395 * time, where as a 451 can take them in chains. [the 450 claims it 1396 * can handle chains, but is appears to be buggy...] iopb are allocated 1397 * in DVMA space at boot up time. each disk gets one iopb, and the 1398 * controller gets one (for POLL and WAIT commands). what happens if 1399 * the iopb is busy? for i/o type [1], the buffers are queued at the 1400 * "buff" layer and * picked up later by the interrupt routine. for case 1401 * [2] we can only be blocked if there is a WAIT type I/O request being 1402 * run. since this can only happen when we are crashing, we wait a sec 1403 * and then steal the IOPB. for case [3] the process can sleep 1404 * on the iorq free list until some iopbs are avaliable. 1405 */ 1406 1407 1408 int 1409 xyc_submit_iorq(xycsc, iorq, type) 1410 struct xyc_softc *xycsc; 1411 struct xy_iorq *iorq; 1412 int type; 1413 1414 { 1415 struct xy_iopb *iopb; 1416 u_long iopbaddr; 1417 1418 #ifdef XYC_DEBUG 1419 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1420 xycsc->sc_dev.dv_xname, iorq, type); 1421 #endif 1422 1423 /* first check and see if controller is busy */ 1424 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1425 #ifdef XYC_DEBUG 1426 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1427 #endif 1428 if (type == XY_SUB_NOQ) 1429 return (XY_ERR_FAIL); /* failed */ 1430 switch (type) { 1431 case XY_SUB_NORM: 1432 return XY_ERR_AOK; /* success */ 1433 case XY_SUB_WAIT: 1434 while (iorq->iopb->done == 0) { 1435 sleep(iorq, PRIBIO); 1436 } 1437 return (iorq->errno); 1438 case XY_SUB_POLL: /* steal controller */ 1439 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1440 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1441 panic("xyc_submit_iorq: stuck xyc"); 1442 printf("%s: stole controller\n", 1443 xycsc->sc_dev.dv_xname); 1444 break; 1445 default: 1446 panic("xyc_submit_iorq adding"); 1447 } 1448 } 1449 1450 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1451 if (iopb == NULL) { /* nothing doing? */ 1452 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1453 return(XY_ERR_AOK); 1454 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1455 } 1456 iopbaddr = (u_long) iopb - DVMA_BASE; 1457 1458 XYC_GO(xycsc->xyc, iopbaddr); 1459 1460 /* command now running, wrap it up */ 1461 switch (type) { 1462 case XY_SUB_NORM: 1463 case XY_SUB_NOQ: 1464 return (XY_ERR_AOK); /* success */ 1465 case XY_SUB_WAIT: 1466 while (iorq->iopb->done == 0) { 1467 sleep(iorq, PRIBIO); 1468 } 1469 return (iorq->errno); 1470 case XY_SUB_POLL: 1471 return (xyc_piodriver(xycsc, iorq)); 1472 default: 1473 panic("xyc_submit_iorq wrap up"); 1474 } 1475 panic("xyc_submit_iorq"); 1476 return 0; /* not reached */ 1477 } 1478 1479 1480 /* 1481 * xyc_chain: build a chain. return dvma address of first element in 1482 * the chain. iorq != NULL: means we only want that item on the chain. 1483 */ 1484 1485 struct xy_iopb * 1486 xyc_chain(xycsc, iorq) 1487 1488 struct xyc_softc *xycsc; 1489 struct xy_iorq *iorq; 1490 1491 { 1492 int togo, chain, hand; 1493 struct xy_iopb *iopb, *prev_iopb; 1494 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1495 1496 /* 1497 * promote control IOPB to the top 1498 */ 1499 if (iorq == NULL) { 1500 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1501 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1502 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1503 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1504 } 1505 /* 1506 * special case: if iorq != NULL then we have a POLL or WAIT request. 1507 * we let these take priority and do them first. 1508 */ 1509 if (iorq) { 1510 xycsc->xy_chain[0] = iorq; 1511 iorq->iopb->chen = 0; 1512 return(iorq->iopb); 1513 } 1514 1515 /* 1516 * NORM case: do round robin and maybe chain (if allowed and possible) 1517 */ 1518 1519 chain = 0; 1520 hand = xycsc->xy_hand; 1521 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1522 1523 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1524 1525 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1526 xycsc->iopbase[hand].done) 1527 continue; /* not ready-for-i/o */ 1528 1529 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1530 iopb = xycsc->xy_chain[chain]->iopb; 1531 iopb->chen = 0; 1532 if (chain != 0) { /* adding a link to a chain? */ 1533 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1534 prev_iopb->chen = 1; 1535 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1536 } else { /* head of chain */ 1537 iorq = xycsc->xy_chain[chain]; 1538 } 1539 chain++; 1540 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1541 } 1542 return(iorq ? iorq->iopb : NULL); 1543 } 1544 1545 /* 1546 * xyc_piodriver 1547 * 1548 * programmed i/o driver. this function takes over the computer 1549 * and drains off the polled i/o request. it returns the status of the iorq 1550 * the caller is interesting in. 1551 */ 1552 int 1553 xyc_piodriver(xycsc, iorq) 1554 struct xyc_softc *xycsc; 1555 struct xy_iorq *iorq; 1556 1557 { 1558 int nreset = 0; 1559 int retval = 0; 1560 u_long res; 1561 #ifdef XYC_DEBUG 1562 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1563 #endif 1564 1565 while (iorq->iopb->done == 0) { 1566 1567 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1568 1569 /* we expect some progress soon */ 1570 if (res == XY_ERR_FAIL && nreset >= 2) { 1571 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1572 #ifdef XYC_DEBUG 1573 printf("xyc_piodriver: timeout\n"); 1574 #endif 1575 return (XY_ERR_FAIL); 1576 } 1577 if (res == XY_ERR_FAIL) { 1578 if (xyc_reset(xycsc, 0, 1579 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1580 XY_ERR_FAIL, 1581 0) == XY_ERR_FAIL) 1582 return (XY_ERR_FAIL); /* flushes all but POLL 1583 * requests, resets */ 1584 continue; 1585 } 1586 1587 xyc_remove_iorq(xycsc); /* may resubmit request */ 1588 1589 if (iorq->iopb->done == 0) 1590 xyc_start(xycsc, iorq); 1591 } 1592 1593 /* get return value */ 1594 1595 retval = iorq->errno; 1596 1597 #ifdef XYC_DEBUG 1598 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1599 iorq->errno, xyc_e2str(iorq->errno)); 1600 #endif 1601 1602 /* start up any bufs that have queued */ 1603 1604 xyc_start(xycsc, NULL); 1605 1606 return (retval); 1607 } 1608 1609 /* 1610 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1611 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1612 */ 1613 void 1614 xyc_xyreset(xycsc, xysc) 1615 struct xyc_softc *xycsc; 1616 struct xy_softc *xysc; 1617 1618 { 1619 struct xy_iopb tmpiopb; 1620 u_long addr; 1621 int del; 1622 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1623 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1624 xycsc->ciopb->ien = 0; 1625 xycsc->ciopb->com = XYCMD_RST; 1626 xycsc->ciopb->unit = xysc->xy_drive; 1627 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1628 1629 XYC_GO(xycsc->xyc, addr); 1630 1631 del = XYC_RESETUSEC; 1632 while (del > 0) { 1633 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1634 DELAY(1); 1635 del--; 1636 } 1637 1638 if (del <= 0 || xycsc->ciopb->errs) { 1639 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1640 xyc_e2str(xycsc->ciopb->errno)); 1641 del = xycsc->xyc->xyc_rsetup; 1642 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1643 panic("xyc_reset"); 1644 } else { 1645 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1646 } 1647 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 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, 1701 (iorq->buf->b_flags & B_READ) 1702 ? BUS_DMASYNC_POSTREAD 1703 : BUS_DMASYNC_POSTWRITE); 1704 1705 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1706 1707 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1708 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1709 (xycsc->reqs[lcv].buf->b_bcount - 1710 xycsc->reqs[lcv].buf->b_resid)); 1711 biodone(iorq->buf); 1712 iorq->mode = XY_SUB_FREE; 1713 break; 1714 case XY_SUB_WAIT: 1715 wakeup(iorq); 1716 case XY_SUB_POLL: 1717 iorq->mode = 1718 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1719 break; 1720 } 1721 1722 } else { 1723 1724 /* resubmit, no need to do anything here */ 1725 } 1726 } 1727 1728 /* 1729 * now, if stuff is waiting, start it. 1730 * since we just reset it should go 1731 */ 1732 xyc_start(xycsc, NULL); 1733 1734 return (retval); 1735 } 1736 1737 /* 1738 * xyc_start: start waiting buffers 1739 */ 1740 1741 void 1742 xyc_start(xycsc, iorq) 1743 struct xyc_softc *xycsc; 1744 struct xy_iorq *iorq; 1745 1746 { 1747 int lcv; 1748 struct xy_softc *xy; 1749 1750 if (iorq == NULL) { 1751 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1752 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1753 if (xy->xyq.b_actf == NULL) continue; 1754 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1755 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1756 } 1757 } 1758 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1759 } 1760 1761 /* 1762 * xyc_remove_iorq: remove "done" IOPB's. 1763 */ 1764 1765 int 1766 xyc_remove_iorq(xycsc) 1767 struct xyc_softc *xycsc; 1768 1769 { 1770 int errno, rq, comm, errs; 1771 struct xyc *xyc = xycsc->xyc; 1772 u_long addr; 1773 struct xy_iopb *iopb; 1774 struct xy_iorq *iorq; 1775 struct buf *bp; 1776 1777 if (xyc->xyc_csr & XYC_DERR) { 1778 /* 1779 * DOUBLE ERROR: should never happen under normal use. This 1780 * error is so bad, you can't even tell which IOPB is bad, so 1781 * we dump them all. 1782 */ 1783 errno = XY_ERR_DERR; 1784 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1785 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1786 printf("%s: soft reset failed!\n", 1787 xycsc->sc_dev.dv_xname); 1788 panic("xyc_remove_iorq: controller DEAD"); 1789 } 1790 return (XY_ERR_AOK); 1791 } 1792 1793 /* 1794 * get iopb that is done, loop down the chain 1795 */ 1796 1797 if (xyc->xyc_csr & XYC_ERR) { 1798 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1799 } 1800 if (xyc->xyc_csr & XYC_IPND) { 1801 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1802 } 1803 1804 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1805 iorq = xycsc->xy_chain[rq]; 1806 if (iorq == NULL) break; /* done ! */ 1807 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1808 continue; /* free, or done */ 1809 iopb = iorq->iopb; 1810 if (iopb->done == 0) 1811 continue; /* not done yet */ 1812 1813 comm = iopb->com; 1814 errs = iopb->errs; 1815 1816 if (errs) 1817 iorq->errno = iopb->errno; 1818 else 1819 iorq->errno = 0; 1820 1821 /* handle non-fatal errors */ 1822 1823 if (errs && 1824 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1825 continue; /* AOK: we resubmitted it */ 1826 1827 1828 /* this iorq is now done (hasn't been restarted or anything) */ 1829 1830 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1831 xyc_perror(iorq, iopb, 0); 1832 1833 /* now, if read/write check to make sure we got all the data 1834 * we needed. (this may not be the case if we got an error in 1835 * the middle of a multisector request). */ 1836 1837 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1838 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1839 /* we just successfully processed a bad144 sector 1840 * note: if we are in bad 144 mode, the pointers have 1841 * been advanced already (see above) and are pointing 1842 * at the bad144 sector. to exit bad144 mode, we 1843 * must advance the pointers 1 sector and issue a new 1844 * request if there are still sectors left to process 1845 * 1846 */ 1847 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1848 1849 /* exit b144 mode */ 1850 iorq->mode = iorq->mode & (~XY_MODE_B144); 1851 1852 if (iorq->sectcnt) { /* more to go! */ 1853 iorq->lasterror = iorq->errno = iopb->errno = 0; 1854 iopb->errs = iopb->done = 0; 1855 iorq->tries = 0; 1856 iopb->scnt = iorq->sectcnt; 1857 iopb->cyl = iorq->blockno / 1858 iorq->xy->sectpercyl; 1859 iopb->head = 1860 (iorq->blockno / iorq->xy->nhead) % 1861 iorq->xy->nhead; 1862 iopb->sect = iorq->blockno % XYFM_BPS; 1863 addr = (u_long) iorq->dbuf; 1864 iopb->dataa = (addr & 0xffff); 1865 iopb->datar = ((addr & 0xff0000) >> 16); 1866 /* will resubit at end */ 1867 continue; 1868 } 1869 } 1870 /* final cleanup, totally done with this request */ 1871 1872 switch (XY_STATE(iorq->mode)) { 1873 case XY_SUB_NORM: 1874 bp = iorq->buf; 1875 if (errs) { 1876 bp->b_error = EIO; 1877 bp->b_flags |= B_ERROR; 1878 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1879 } else { 1880 bp->b_resid = 0; /* done */ 1881 } 1882 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1883 (iorq->buf->b_flags & B_READ) 1884 ? BUS_DMASYNC_POSTREAD 1885 : BUS_DMASYNC_POSTWRITE); 1886 1887 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1888 1889 iorq->xy->xyq.b_actf = bp->b_actf; 1890 disk_unbusy(&iorq->xy->sc_dk, 1891 (bp->b_bcount - bp->b_resid)); 1892 iorq->mode = XY_SUB_FREE; 1893 biodone(bp); 1894 break; 1895 case XY_SUB_WAIT: 1896 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1897 wakeup(iorq); 1898 break; 1899 case XY_SUB_POLL: 1900 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1901 break; 1902 } 1903 } 1904 1905 return (XY_ERR_AOK); 1906 } 1907 1908 /* 1909 * xyc_perror: print error. 1910 * - if still_trying is true: we got an error, retried and got a 1911 * different error. in that case lasterror is the old error, 1912 * and errno is the new one. 1913 * - if still_trying is not true, then if we ever had an error it 1914 * is in lasterror. also, if iorq->errno == 0, then we recovered 1915 * from that error (otherwise iorq->errno == iorq->lasterror). 1916 */ 1917 void 1918 xyc_perror(iorq, iopb, still_trying) 1919 struct xy_iorq *iorq; 1920 struct xy_iopb *iopb; 1921 int still_trying; 1922 1923 { 1924 1925 int error = iorq->lasterror; 1926 1927 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1928 : iorq->xyc->sc_dev.dv_xname); 1929 if (iorq->buf) 1930 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1931 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1932 printf("%s %d/%d/%d: ", 1933 (iopb->com == XYCMD_RD) ? "read" : "write", 1934 iopb->cyl, iopb->head, iopb->sect); 1935 printf("%s", xyc_e2str(error)); 1936 1937 if (still_trying) 1938 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1939 else 1940 if (iorq->errno == 0) 1941 printf(" [recovered in %d tries]", iorq->tries); 1942 1943 printf("\n"); 1944 } 1945 1946 /* 1947 * xyc_error: non-fatal error encountered... recover. 1948 * return AOK if resubmitted, return FAIL if this iopb is done 1949 */ 1950 int 1951 xyc_error(xycsc, iorq, iopb, comm) 1952 struct xyc_softc *xycsc; 1953 struct xy_iorq *iorq; 1954 struct xy_iopb *iopb; 1955 int comm; 1956 1957 { 1958 int errno = iorq->errno; 1959 int erract = xyc_entoact(errno); 1960 int oldmode, advance, i; 1961 1962 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1963 oldmode = iorq->mode; 1964 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1965 /* make xyc_start ignore us */ 1966 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1967 iorq->mode = oldmode; 1968 } 1969 /* check for read/write to a sector in bad144 table if bad: redirect 1970 * request to bad144 area */ 1971 1972 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1973 (iorq->mode & XY_MODE_B144) == 0) { 1974 advance = iorq->sectcnt - iopb->scnt; 1975 XYC_ADVANCE(iorq, advance); 1976 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1977 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1978 iorq->blockno % iorq->xy->nsect)) != -1) { 1979 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1980 * redirect */ 1981 iopb->errno = iopb->done = iopb->errs = 0; 1982 iopb->scnt = 1; 1983 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1984 /* second to last acyl */ 1985 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1986 * standard */ 1987 iopb->head = i / iorq->xy->nhead; 1988 iopb->sect = i % iorq->xy->nhead; 1989 /* will resubmit when we come out of remove_iorq */ 1990 return (XY_ERR_AOK); /* recovered! */ 1991 } 1992 } 1993 1994 /* 1995 * it isn't a bad144 sector, must be real error! see if we can retry 1996 * it? 1997 */ 1998 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1999 xyc_perror(iorq, iopb, 1); /* inform of error state 2000 * change */ 2001 iorq->lasterror = errno; 2002 2003 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2004 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2005 iorq->tries++; 2006 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2007 /* will resubmit at end of remove_iorq */ 2008 return (XY_ERR_AOK); /* recovered! */ 2009 } 2010 2011 /* failed to recover from this error */ 2012 return (XY_ERR_FAIL); 2013 } 2014 2015 /* 2016 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2017 */ 2018 void 2019 xyc_tick(arg) 2020 void *arg; 2021 2022 { 2023 struct xyc_softc *xycsc = arg; 2024 int lcv, s, reset = 0; 2025 2026 /* reduce ttl for each request if one goes to zero, reset xyc */ 2027 s = splbio(); 2028 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2029 if (xycsc->reqs[lcv].mode == 0 || 2030 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2031 continue; 2032 xycsc->reqs[lcv].ttl--; 2033 if (xycsc->reqs[lcv].ttl == 0) 2034 reset = 1; 2035 } 2036 if (reset) { 2037 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2038 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2039 } 2040 splx(s); 2041 2042 /* until next time */ 2043 2044 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2045 } 2046 2047 /* 2048 * xyc_ioctlcmd: this function provides a user level interface to the 2049 * controller via ioctl. this allows "format" programs to be written 2050 * in user code, and is also useful for some debugging. we return 2051 * an error code. called at user priority. 2052 * 2053 * XXX missing a few commands (see the 7053 driver for ideas) 2054 */ 2055 int 2056 xyc_ioctlcmd(xy, dev, xio) 2057 struct xy_softc *xy; 2058 dev_t dev; 2059 struct xd_iocmd *xio; 2060 2061 { 2062 int s, rqno, dummy = 0; 2063 caddr_t dvmabuf = NULL, buf = NULL; 2064 struct xyc_softc *xycsc; 2065 int rseg, error; 2066 bus_dma_segment_t seg; 2067 2068 /* check sanity of requested command */ 2069 2070 switch (xio->cmd) { 2071 2072 case XYCMD_NOP: /* no op: everything should be zero */ 2073 if (xio->subfn || xio->dptr || xio->dlen || 2074 xio->block || xio->sectcnt) 2075 return (EINVAL); 2076 break; 2077 2078 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2079 case XYCMD_WR: 2080 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2081 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2082 return (EINVAL); 2083 break; 2084 2085 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2086 return (EINVAL); 2087 2088 break; 2089 2090 default: 2091 return (EINVAL);/* ??? */ 2092 } 2093 2094 xycsc = xy->parent; 2095 2096 /* create DVMA buffer for request if needed */ 2097 if (xio->dlen) { 2098 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2099 &seg, 1, &rseg, BUS_DMA_WAITOK); 2100 if (error) { 2101 return (error); 2102 } 2103 dvmabuf = (caddr_t)seg.ds_addr; 2104 2105 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2106 &buf, 2107 BUS_DMA_WAITOK|BUS_DMAMEM_NOSYNC); 2108 if (error) { 2109 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2110 return (error); 2111 } 2112 if (xio->cmd == XYCMD_WR) { 2113 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2114 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2115 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2116 return (error); 2117 } 2118 } 2119 } 2120 /* do it! */ 2121 2122 error = 0; 2123 s = splbio(); 2124 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2125 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2126 if (rqno == XY_ERR_FAIL) { 2127 error = EIO; 2128 goto done; 2129 } 2130 xio->errno = xycsc->ciorq->errno; 2131 xio->tries = xycsc->ciorq->tries; 2132 XYC_DONE(xycsc, dummy); 2133 2134 if (xio->cmd == XYCMD_RD) 2135 error = copyout(buf, xio->dptr, xio->dlen); 2136 2137 done: 2138 splx(s); 2139 if (dvmabuf) { 2140 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2141 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2142 } 2143 return (error); 2144 } 2145 2146 /* 2147 * xyc_e2str: convert error code number into an error string 2148 */ 2149 char * 2150 xyc_e2str(no) 2151 int no; 2152 { 2153 switch (no) { 2154 case XY_ERR_FAIL: 2155 return ("Software fatal error"); 2156 case XY_ERR_DERR: 2157 return ("DOUBLE ERROR"); 2158 case XY_ERR_AOK: 2159 return ("Successful completion"); 2160 case XY_ERR_IPEN: 2161 return("Interrupt pending"); 2162 case XY_ERR_BCFL: 2163 return("Busy conflict"); 2164 case XY_ERR_TIMO: 2165 return("Operation timeout"); 2166 case XY_ERR_NHDR: 2167 return("Header not found"); 2168 case XY_ERR_HARD: 2169 return("Hard ECC error"); 2170 case XY_ERR_ICYL: 2171 return("Illegal cylinder address"); 2172 case XY_ERR_ISEC: 2173 return("Illegal sector address"); 2174 case XY_ERR_SMAL: 2175 return("Last sector too small"); 2176 case XY_ERR_SACK: 2177 return("Slave ACK error (non-existent memory)"); 2178 case XY_ERR_CHER: 2179 return("Cylinder and head/header error"); 2180 case XY_ERR_SRTR: 2181 return("Auto-seek retry successful"); 2182 case XY_ERR_WPRO: 2183 return("Write-protect error"); 2184 case XY_ERR_UIMP: 2185 return("Unimplemented command"); 2186 case XY_ERR_DNRY: 2187 return("Drive not ready"); 2188 case XY_ERR_SZER: 2189 return("Sector count zero"); 2190 case XY_ERR_DFLT: 2191 return("Drive faulted"); 2192 case XY_ERR_ISSZ: 2193 return("Illegal sector size"); 2194 case XY_ERR_SLTA: 2195 return("Self test A"); 2196 case XY_ERR_SLTB: 2197 return("Self test B"); 2198 case XY_ERR_SLTC: 2199 return("Self test C"); 2200 case XY_ERR_SOFT: 2201 return("Soft ECC error"); 2202 case XY_ERR_SFOK: 2203 return("Soft ECC error recovered"); 2204 case XY_ERR_IHED: 2205 return("Illegal head"); 2206 case XY_ERR_DSEQ: 2207 return("Disk sequencer error"); 2208 case XY_ERR_SEEK: 2209 return("Seek error"); 2210 default: 2211 return ("Unknown error"); 2212 } 2213 } 2214 2215 int 2216 xyc_entoact(errno) 2217 2218 int errno; 2219 2220 { 2221 switch (errno) { 2222 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2223 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2224 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2225 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2226 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2227 2228 return(XY_ERA_PROG); /* program error ! */ 2229 2230 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2231 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2232 case XY_ERR_SOFT: 2233 2234 return(XY_ERA_HARD); /* hard error, retry */ 2235 2236 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2237 2238 return(XY_ERA_RSET); /* hard error reset */ 2239 2240 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2241 2242 return(XY_ERA_SOFT); /* an FYI error */ 2243 2244 case XY_ERR_WPRO: 2245 2246 return(XY_ERA_WPRO); /* write protect */ 2247 } 2248 2249 return(XY_ERA_PROG); /* ??? */ 2250 } 2251
Indexes created Tue Sep 30 17:09:57 GMT 2025