xy.c revision 1.7
1 /* $NetBSD: xy.c,v 1.7 1998/02/04 05:15:17 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/autoconf.h> 81 #include <machine/sun_disklabel.h> 82 #include <machine/conf.h> 83 84 #include <dev/vme/vmevar.h> 85 #include <dev/vme/xyreg.h> 86 #include <dev/vme/xyvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 97 */ 98 #define XYC_GO(XYC, ADDR) { \ 99 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 100 (ADDR) = ((ADDR) >> 8); \ 101 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 102 (ADDR) = ((ADDR) >> 8); \ 103 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 104 (ADDR) = ((ADDR) >> 8); \ 105 (XYC)->xyc_reloc_hi = (ADDR); \ 106 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 107 } 108 109 /* 110 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 111 */ 112 113 #define XYC_DONE(SC,ER) { \ 114 if ((ER) == XY_ERR_AOK) { \ 115 (ER) = (SC)->ciorq->errno; \ 116 (SC)->ciorq->mode = XY_SUB_FREE; \ 117 wakeup((SC)->ciorq); \ 118 } \ 119 } 120 121 /* 122 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 123 */ 124 125 #define XYC_ADVANCE(IORQ, N) { \ 126 if (N) { \ 127 (IORQ)->sectcnt -= (N); \ 128 (IORQ)->blockno += (N); \ 129 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 130 } \ 131 } 132 133 /* 134 * note - addresses you can sleep on: 135 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 136 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 137 */ 138 139 140 /* 141 * function prototypes 142 * "xyc_*" functions are internal, all others are external interfaces 143 */ 144 145 extern int pil_to_vme[]; /* from obio.c */ 146 147 /* internals */ 148 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 149 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 150 char *xyc_e2str __P((int)); 151 int xyc_entoact __P((int)); 152 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 153 struct xy_iopb *, int)); 154 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 155 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 156 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 157 int xyc_remove_iorq __P((struct xyc_softc *)); 158 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 159 struct xy_softc *)); 160 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 161 struct xy_softc *, int, u_long, int, 162 caddr_t, struct buf *)); 163 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 164 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 165 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 166 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 167 void xyc_tick __P((void *)); 168 int xyc_unbusy __P((struct xyc *, int)); 169 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 170 171 /* machine interrupt hook */ 172 int xycintr __P((void *)); 173 174 /* autoconf */ 175 int xycmatch __P((struct device *, struct cfdata *, void *)); 176 void xycattach __P((struct device *, struct device *, void *)); 177 int xymatch __P((struct device *, struct cfdata *, void *)); 178 void xyattach __P((struct device *, struct device *, void *)); 179 static int xyc_probe __P((void *, void *)); 180 181 static void xydummystrat __P((struct buf *)); 182 int xygetdisklabel __P((struct xy_softc *, void *)); 183 184 /* 185 * cfattach's: device driver interface to autoconfig 186 */ 187 188 struct cfattach xyc_ca = { 189 sizeof(struct xyc_softc), xycmatch, xycattach 190 }; 191 192 struct cfattach xy_ca = { 193 sizeof(struct xy_softc), xymatch, xyattach 194 }; 195 196 extern struct cfdriver xy_cd; 197 198 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 199 int driveno; /* unit number */ 200 int fullmode; /* submit mode */ 201 int booting; /* are we booting or not? */ 202 }; 203 204 /* 205 * dkdriver 206 */ 207 208 struct dkdriver xydkdriver = { xystrategy }; 209 210 /* 211 * start: disk label fix code (XXX) 212 */ 213 214 static void *xy_labeldata; 215 216 static void 217 xydummystrat(bp) 218 struct buf *bp; 219 { 220 if (bp->b_bcount != XYFM_BPS) 221 panic("xydummystrat"); 222 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 223 bp->b_flags |= B_DONE; 224 bp->b_flags &= ~B_BUSY; 225 } 226 227 int 228 xygetdisklabel(xy, b) 229 struct xy_softc *xy; 230 void *b; 231 { 232 char *err; 233 struct sun_disklabel *sdl; 234 235 /* We already have the label data in `b'; setup for dummy strategy */ 236 xy_labeldata = b; 237 238 /* Required parameter for readdisklabel() */ 239 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 240 241 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 242 xydummystrat, 243 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 244 if (err) { 245 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 246 return(XY_ERR_FAIL); 247 } 248 249 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 250 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 251 if (sdl->sl_magic == SUN_DKMAGIC) 252 xy->pcyl = sdl->sl_pcylinders; 253 else { 254 printf("%s: WARNING: no `pcyl' in disk label.\n", 255 xy->sc_dev.dv_xname); 256 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 257 xy->sc_dk.dk_label->d_acylinders; 258 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 259 xy->sc_dev.dv_xname, xy->pcyl); 260 } 261 262 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 263 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 264 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 265 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 266 xy->sectpercyl = xy->nhead * xy->nsect; 267 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 268 * sun->bsd */ 269 return(XY_ERR_AOK); 270 } 271 272 /* 273 * end: disk label fix code (XXX) 274 */ 275 276 /* 277 * a u t o c o n f i g f u n c t i o n s 278 */ 279 280 /* 281 * xycmatch: determine if xyc is present or not. we do a 282 * soft reset to detect the xyc. 283 */ 284 int 285 xyc_probe(vaddr, arg) 286 void *vaddr; 287 void *arg; 288 { 289 struct xyc *xyc = vaddr; 290 291 return (xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL); 292 } 293 294 int xycmatch(parent, cf, aux) 295 struct device *parent; 296 struct cfdata *cf; 297 void *aux; 298 { 299 struct vme_attach_args *va = aux; 300 vme_chipset_tag_t ct = va->vma_chipset_tag; 301 bus_space_tag_t bt = va->vma_bustag; 302 vme_mod_t mod; 303 304 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 305 306 return (vme_bus_probe(ct, bt, va->vma_reg[0], 1, mod, xyc_probe, 0)); 307 } 308 309 /* 310 * xycattach: attach controller 311 */ 312 void 313 xycattach(parent, self, aux) 314 struct device *parent, *self; 315 void *aux; 316 317 { 318 struct vme_attach_args *va = aux; 319 vme_chipset_tag_t ct = va->vma_chipset_tag; 320 bus_space_tag_t bt = va->vma_bustag; 321 bus_space_handle_t bh; 322 vme_intr_handle_t ih; 323 vme_mod_t mod; 324 struct xyc_softc *xyc = (void *) self; 325 struct xyc_attach_args xa; 326 int lcv, res, pbsz, error; 327 bus_dma_segment_t seg; 328 int rseg; 329 330 /* get addressing and intr level stuff from autoconfig and load it 331 * into our xyc_softc. */ 332 333 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 334 335 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 336 mod, bt, &bh) != 0) 337 panic("xyc: vme_map"); 338 339 xyc->xyc = (struct xyc *) bh; 340 xyc->ipl = va->vma_pri; 341 xyc->vector = va->vma_vec; 342 printf(" pri %d", va->vma_pri); 343 xyc->no_ols = 0; /* XXX should be from config */ 344 345 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 346 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 347 348 /* 349 * allocate and zero buffers 350 * check boundaries of the KVA's ... all IOPBs must reside in 351 * the same 64K region. 352 */ 353 354 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 355 356 error = bus_dmamem_alloc( 357 xyc->dmatag, 358 pbsz, /* size */ 359 64*1024, /* boundary */ 360 0, /* alignment */ 361 &seg, 362 1, /* # of segments */ 363 &rseg, /* actual # of segments */ 364 BUS_DMA_NOWAIT); 365 if (error) { 366 printf("%s: DMA buffer map error %d\n", 367 xyc->sc_dev.dv_xname, error); 368 return; 369 } 370 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 371 372 error = bus_dmamem_map( 373 xyc->dmatag, 374 &seg, 375 rseg, 376 XYC_MAXIOPB * sizeof(struct xy_iopb), 377 (caddr_t *)&xyc->iopbase, 378 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 379 if (error) { 380 bus_dmamem_free(xyc->dmatag, &seg, rseg); 381 printf("%s: DMA buffer map error %d\n", 382 xyc->sc_dev.dv_xname, error); 383 return; 384 } 385 bzero(xyc->iopbase, pbsz); 386 387 xyc->reqs = (struct xy_iorq *) 388 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 389 if (xyc->reqs == NULL) 390 panic("xyc malloc"); 391 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 392 393 /* 394 * init iorq to iopb pointers, and non-zero fields in the 395 * iopb which never change. 396 */ 397 398 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 399 xyc->xy_chain[lcv] = NULL; 400 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 401 xyc->iopbase[lcv].asr = 1; /* always the same */ 402 xyc->iopbase[lcv].eef = 1; /* always the same */ 403 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 404 xyc->iopbase[lcv].aud = 1; /* always the same */ 405 xyc->iopbase[lcv].relo = 1; /* always the same */ 406 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 407 408 error = bus_dmamap_create( 409 xyc->dmatag, 410 MAXPHYS, /* size */ 411 1, /* nsegments */ 412 MAXPHYS, /* maxsegsz */ 413 0, /* boundary */ 414 BUS_DMA_NOWAIT, 415 &xyc->reqs[lcv].dmamap); 416 if (error) { 417 printf("%s: DMA buffer map create error %d\n", 418 xyc->sc_dev.dv_xname, error); 419 return; 420 } 421 } 422 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 423 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 424 xyc->xy_hand = 0; 425 426 /* read controller parameters and insure we have a 450/451 */ 427 428 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 429 res = xyc->ciopb->ctyp; 430 XYC_DONE(xyc, error); 431 if (res != XYCT_450) { 432 if (error) 433 printf(": %s: ", xyc_e2str(error)); 434 printf(": doesn't identify as a 450/451\n"); 435 return; 436 } 437 printf(": Xylogics 450/451"); 438 if (xyc->no_ols) 439 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 440 printf("\n"); 441 if (error) { 442 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 443 xyc_e2str(error)); 444 return; 445 } 446 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 447 printf("%s: 24 bit addressing turned off\n", 448 xyc->sc_dev.dv_xname); 449 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 450 printf("to enable 24 bit mode and this driver\n"); 451 return; 452 } 453 454 /* link in interrupt with higher level software */ 455 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 456 vme_intr_establish(ct, ih, xycintr, xyc); 457 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 458 vme_bus_establish(ct, &xyc->sc_dev); 459 460 461 /* now we must look for disks using autoconfig */ 462 xa.fullmode = XY_SUB_POLL; 463 xa.booting = 1; 464 465 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 466 (void) config_found(self, (void *) &xa, NULL); 467 468 /* start the watchdog clock */ 469 timeout(xyc_tick, xyc, XYC_TICKCNT); 470 471 } 472 473 /* 474 * xymatch: probe for disk. 475 * 476 * note: we almost always say disk is present. this allows us to 477 * spin up and configure a disk after the system is booted (we can 478 * call xyattach!). 479 */ 480 int 481 xymatch(parent, cf, aux) 482 struct device *parent; 483 struct cfdata *cf; 484 void *aux; 485 { 486 struct xyc_attach_args *xa = aux; 487 488 /* looking for autoconf wildcard or exact match */ 489 490 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 491 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 492 return 0; 493 494 return 1; 495 496 } 497 498 /* 499 * xyattach: attach a disk. this can be called from autoconf and also 500 * from xyopen/xystrategy. 501 */ 502 void 503 xyattach(parent, self, aux) 504 struct device *parent, *self; 505 void *aux; 506 507 { 508 struct xy_softc *xy = (void *) self, *oxy; 509 struct xyc_softc *xyc = (void *) parent; 510 struct xyc_attach_args *xa = aux; 511 int spt, mb, blk, lcv, fmode, s = 0, newstate; 512 struct dkbad *dkb; 513 int rseg, error; 514 bus_dma_segment_t seg; 515 caddr_t dmaddr; 516 caddr_t buf; 517 518 /* 519 * Always re-initialize the disk structure. We want statistics 520 * to start with a clean slate. 521 */ 522 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 523 xy->sc_dk.dk_driver = &xydkdriver; 524 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 525 526 /* if booting, init the xy_softc */ 527 528 if (xa->booting) { 529 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 530 xy->flags = 0; 531 xy->parent = xyc; 532 533 /* init queue of waiting bufs */ 534 535 xy->xyq.b_active = 0; 536 xy->xyq.b_actf = 0; 537 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 538 539 xy->xyrq = &xyc->reqs[xa->driveno]; 540 541 } 542 xy->xy_drive = xa->driveno; 543 fmode = xa->fullmode; 544 xyc->sc_drives[xa->driveno] = xy; 545 546 /* if not booting, make sure we are the only process in the attach for 547 * this drive. if locked out, sleep on it. */ 548 549 if (!xa->booting) { 550 s = splbio(); 551 while (xy->state == XY_DRIVE_ATTACHING) { 552 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 553 splx(s); 554 return; 555 } 556 } 557 printf("%s at %s", 558 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 559 } 560 561 /* we now have control */ 562 xy->state = XY_DRIVE_ATTACHING; 563 newstate = XY_DRIVE_UNKNOWN; 564 565 buf = NULL; 566 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 567 &seg, 1, &rseg, BUS_DMA_NOWAIT); 568 if (error) { 569 printf("%s: DMA buffer alloc error %d\n", 570 xy->sc_dev.dv_xname, error); 571 goto done; 572 } 573 dmaddr = (caddr_t)seg.ds_addr; 574 575 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 576 &buf, 577 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 578 if (error) { 579 printf("%s: DMA buffer alloc error %d\n", 580 xy->sc_dev.dv_xname, error); 581 bus_dmamem_free(xyc->dmatag, &seg, rseg); 582 goto done; 583 } 584 585 586 /* first try and reset the drive */ 587 588 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 589 XYC_DONE(xyc, error); 590 if (error == XY_ERR_DNRY) { 591 printf(" drive %d: off-line\n", xa->driveno); 592 goto done; 593 } 594 if (error) { 595 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 596 goto done; 597 } 598 printf(" drive %d: ready", xa->driveno); 599 600 /* 601 * now set drive parameters (to semi-bogus values) so we can read the 602 * disk label. 603 */ 604 xy->pcyl = xy->ncyl = 1; 605 xy->acyl = 0; 606 xy->nhead = 1; 607 xy->nsect = 1; 608 xy->sectpercyl = 1; 609 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 610 xy->dkb.bt_bad[lcv].bt_cyl = 611 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 612 613 /* read disk label */ 614 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 615 xy->drive_type++) { 616 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 617 dmaddr, fmode); 618 XYC_DONE(xyc, error); 619 if (error == XY_ERR_AOK) break; 620 } 621 622 if (error != XY_ERR_AOK) { 623 printf("\n%s: reading disk label failed: %s\n", 624 xy->sc_dev.dv_xname, xyc_e2str(error)); 625 goto done; 626 } 627 printf(" (drive type %d)\n", xy->drive_type); 628 629 newstate = XY_DRIVE_NOLABEL; 630 631 xy->hw_spt = spt = 0; /* XXX needed ? */ 632 /* Attach the disk: must be before getdisklabel to malloc label */ 633 disk_attach(&xy->sc_dk); 634 635 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 636 goto done; 637 638 /* inform the user of what is up */ 639 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 640 buf, xy->pcyl); 641 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 642 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 643 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 644 XYFM_BPS); 645 646 /* 647 * 450/451 stupidity: the drive type is encoded into the format 648 * of the disk. the drive type in the IOPB must match the drive 649 * type in the format, or you will not be able to do I/O to the 650 * disk (you get header not found errors). if you have two drives 651 * of different sizes that have the same drive type in their 652 * formatting then you are out of luck. 653 * 654 * this problem was corrected in the 753/7053. 655 */ 656 657 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 658 oxy = xyc->sc_drives[lcv]; 659 if (oxy == NULL || oxy == xy) continue; 660 if (oxy->drive_type != xy->drive_type) continue; 661 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 662 xy->nhead != oxy->nhead) { 663 printf("%s: %s and %s must be the same size!\n", 664 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 665 oxy->sc_dev.dv_xname); 666 panic("xy drive size mismatch"); 667 } 668 } 669 670 671 /* now set the real drive parameters! */ 672 673 blk = (xy->nsect - 1) + 674 ((xy->nhead - 1) * xy->nsect) + 675 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 676 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 677 XYC_DONE(xyc, error); 678 if (error) { 679 printf("%s: write drive size failed: %s\n", 680 xy->sc_dev.dv_xname, xyc_e2str(error)); 681 goto done; 682 } 683 newstate = XY_DRIVE_ONLINE; 684 685 /* 686 * read bad144 table. this table resides on the first sector of the 687 * last track of the disk (i.e. second cyl of "acyl" area). 688 */ 689 690 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 691 /* last cyl */ 692 (xy->nhead - 1) * xy->nsect; /* last head */ 693 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 694 dmaddr, fmode); 695 XYC_DONE(xyc, error); 696 if (error) { 697 printf("%s: reading bad144 failed: %s\n", 698 xy->sc_dev.dv_xname, xyc_e2str(error)); 699 goto done; 700 } 701 702 /* check dkbad for sanity */ 703 dkb = (struct dkbad *) buf; 704 for (lcv = 0; lcv < 126; lcv++) { 705 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 706 dkb->bt_bad[lcv].bt_cyl == 0) && 707 dkb->bt_bad[lcv].bt_trksec == 0xffff) 708 continue; /* blank */ 709 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 710 break; 711 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 712 break; 713 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 714 break; 715 } 716 if (lcv != 126) { 717 printf("%s: warning: invalid bad144 sector!\n", 718 xy->sc_dev.dv_xname); 719 } else { 720 bcopy(buf, &xy->dkb, XYFM_BPS); 721 } 722 723 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 724 725 done: 726 if (buf != NULL) { 727 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 728 bus_dmamem_free(xyc->dmatag, &seg, rseg); 729 } 730 731 xy->state = newstate; 732 if (!xa->booting) { 733 wakeup(&xy->state); 734 splx(s); 735 } 736 } 737 738 /* 739 * end of autoconfig functions 740 */ 741 742 /* 743 * { b , c } d e v s w f u n c t i o n s 744 */ 745 746 /* 747 * xyclose: close device 748 */ 749 int 750 xyclose(dev, flag, fmt, p) 751 dev_t dev; 752 int flag, fmt; 753 struct proc *p; 754 755 { 756 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 757 int part = DISKPART(dev); 758 759 /* clear mask bits */ 760 761 switch (fmt) { 762 case S_IFCHR: 763 xy->sc_dk.dk_copenmask &= ~(1 << part); 764 break; 765 case S_IFBLK: 766 xy->sc_dk.dk_bopenmask &= ~(1 << part); 767 break; 768 } 769 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 770 771 return 0; 772 } 773 774 /* 775 * xydump: crash dump system 776 */ 777 int 778 xydump(dev, blkno, va, size) 779 dev_t dev; 780 daddr_t blkno; 781 caddr_t va; 782 size_t size; 783 { 784 int unit, part; 785 struct xy_softc *xy; 786 787 unit = DISKUNIT(dev); 788 if (unit >= xy_cd.cd_ndevs) 789 return ENXIO; 790 part = DISKPART(dev); 791 792 xy = xy_cd.cd_devs[unit]; 793 794 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 795 'a' + part); 796 797 return ENXIO; 798 799 /* outline: globals: "dumplo" == sector number of partition to start 800 * dump at (convert to physical sector with partition table) 801 * "dumpsize" == size of dump in clicks "physmem" == size of physical 802 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 803 * physmem) 804 * 805 * dump a copy of physical memory to the dump device starting at sector 806 * "dumplo" in the swap partition (make sure > 0). map in pages as 807 * we go. use polled I/O. 808 * 809 * XXX how to handle NON_CONTIG? */ 810 811 } 812 813 /* 814 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 815 */ 816 int 817 xyioctl(dev, command, addr, flag, p) 818 dev_t dev; 819 u_long command; 820 caddr_t addr; 821 int flag; 822 struct proc *p; 823 824 { 825 struct xy_softc *xy; 826 struct xd_iocmd *xio; 827 int error, s, unit; 828 829 unit = DISKUNIT(dev); 830 831 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 832 return (ENXIO); 833 834 /* switch on ioctl type */ 835 836 switch (command) { 837 case DIOCSBAD: /* set bad144 info */ 838 if ((flag & FWRITE) == 0) 839 return EBADF; 840 s = splbio(); 841 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 842 splx(s); 843 return 0; 844 845 case DIOCGDINFO: /* get disk label */ 846 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 847 return 0; 848 849 case DIOCGPART: /* get partition info */ 850 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 851 ((struct partinfo *) addr)->part = 852 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 853 return 0; 854 855 case DIOCSDINFO: /* set disk label */ 856 if ((flag & FWRITE) == 0) 857 return EBADF; 858 error = setdisklabel(xy->sc_dk.dk_label, 859 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 860 xy->sc_dk.dk_cpulabel); 861 if (error == 0) { 862 if (xy->state == XY_DRIVE_NOLABEL) 863 xy->state = XY_DRIVE_ONLINE; 864 } 865 return error; 866 867 case DIOCWLABEL: /* change write status of disk label */ 868 if ((flag & FWRITE) == 0) 869 return EBADF; 870 if (*(int *) addr) 871 xy->flags |= XY_WLABEL; 872 else 873 xy->flags &= ~XY_WLABEL; 874 return 0; 875 876 case DIOCWDINFO: /* write disk label */ 877 if ((flag & FWRITE) == 0) 878 return EBADF; 879 error = setdisklabel(xy->sc_dk.dk_label, 880 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 881 xy->sc_dk.dk_cpulabel); 882 if (error == 0) { 883 if (xy->state == XY_DRIVE_NOLABEL) 884 xy->state = XY_DRIVE_ONLINE; 885 886 /* Simulate opening partition 0 so write succeeds. */ 887 xy->sc_dk.dk_openmask |= (1 << 0); 888 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 889 xystrategy, xy->sc_dk.dk_label, 890 xy->sc_dk.dk_cpulabel); 891 xy->sc_dk.dk_openmask = 892 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 893 } 894 return error; 895 896 case DIOSXDCMD: 897 xio = (struct xd_iocmd *) addr; 898 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 899 return (error); 900 return (xyc_ioctlcmd(xy, dev, xio)); 901 902 default: 903 return ENOTTY; 904 } 905 } 906 907 /* 908 * xyopen: open drive 909 */ 910 911 int 912 xyopen(dev, flag, fmt, p) 913 dev_t dev; 914 int flag, fmt; 915 struct proc *p; 916 { 917 int unit, part; 918 struct xy_softc *xy; 919 struct xyc_attach_args xa; 920 921 /* first, could it be a valid target? */ 922 923 unit = DISKUNIT(dev); 924 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 925 return (ENXIO); 926 part = DISKPART(dev); 927 928 /* do we need to attach the drive? */ 929 930 if (xy->state == XY_DRIVE_UNKNOWN) { 931 xa.driveno = xy->xy_drive; 932 xa.fullmode = XY_SUB_WAIT; 933 xa.booting = 0; 934 xyattach((struct device *) xy->parent, 935 (struct device *) xy, &xa); 936 if (xy->state == XY_DRIVE_UNKNOWN) { 937 return (EIO); 938 } 939 } 940 /* check for partition */ 941 942 if (part != RAW_PART && 943 (part >= xy->sc_dk.dk_label->d_npartitions || 944 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 945 return (ENXIO); 946 } 947 /* set open masks */ 948 949 switch (fmt) { 950 case S_IFCHR: 951 xy->sc_dk.dk_copenmask |= (1 << part); 952 break; 953 case S_IFBLK: 954 xy->sc_dk.dk_bopenmask |= (1 << part); 955 break; 956 } 957 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 958 959 return 0; 960 } 961 962 int 963 xyread(dev, uio, flags) 964 dev_t dev; 965 struct uio *uio; 966 int flags; 967 { 968 969 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 970 } 971 972 int 973 xywrite(dev, uio, flags) 974 dev_t dev; 975 struct uio *uio; 976 int flags; 977 { 978 979 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 980 } 981 982 983 /* 984 * xysize: return size of a partition for a dump 985 */ 986 987 int 988 xysize(dev) 989 dev_t dev; 990 991 { 992 struct xy_softc *xysc; 993 int unit, part, size, omask; 994 995 /* valid unit? */ 996 unit = DISKUNIT(dev); 997 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 998 return (-1); 999 1000 part = DISKPART(dev); 1001 omask = xysc->sc_dk.dk_openmask & (1 << part); 1002 1003 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1004 return (-1); 1005 1006 /* do it */ 1007 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1008 size = -1; /* only give valid size for swap partitions */ 1009 else 1010 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1011 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1012 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1013 return (-1); 1014 return (size); 1015 } 1016 1017 /* 1018 * xystrategy: buffering system interface to xy. 1019 */ 1020 1021 void 1022 xystrategy(bp) 1023 struct buf *bp; 1024 1025 { 1026 struct xy_softc *xy; 1027 int s, unit; 1028 struct xyc_attach_args xa; 1029 1030 unit = DISKUNIT(bp->b_dev); 1031 1032 /* check for live device */ 1033 1034 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1035 bp->b_blkno < 0 || 1036 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1037 bp->b_error = EINVAL; 1038 goto bad; 1039 } 1040 /* do we need to attach the drive? */ 1041 1042 if (xy->state == XY_DRIVE_UNKNOWN) { 1043 xa.driveno = xy->xy_drive; 1044 xa.fullmode = XY_SUB_WAIT; 1045 xa.booting = 0; 1046 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1047 if (xy->state == XY_DRIVE_UNKNOWN) { 1048 bp->b_error = EIO; 1049 goto bad; 1050 } 1051 } 1052 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1053 /* no I/O to unlabeled disks, unless raw partition */ 1054 bp->b_error = EIO; 1055 goto bad; 1056 } 1057 /* short circuit zero length request */ 1058 1059 if (bp->b_bcount == 0) 1060 goto done; 1061 1062 /* check bounds with label (disksubr.c). Determine the size of the 1063 * transfer, and make sure it is within the boundaries of the 1064 * partition. Adjust transfer if needed, and signal errors or early 1065 * completion. */ 1066 1067 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1068 (xy->flags & XY_WLABEL) != 0) <= 0) 1069 goto done; 1070 1071 /* 1072 * now we know we have a valid buf structure that we need to do I/O 1073 * on. 1074 */ 1075 s = splbio(); /* protect the queues */ 1076 1077 disksort(&xy->xyq, bp); 1078 1079 /* start 'em up */ 1080 1081 xyc_start(xy->parent, NULL); 1082 1083 /* done! */ 1084 1085 splx(s); 1086 return; 1087 1088 bad: /* tells upper layers we have an error */ 1089 bp->b_flags |= B_ERROR; 1090 done: /* tells upper layers we are done with this 1091 * buf */ 1092 bp->b_resid = bp->b_bcount; 1093 biodone(bp); 1094 } 1095 /* 1096 * end of {b,c}devsw functions 1097 */ 1098 1099 /* 1100 * i n t e r r u p t f u n c t i o n 1101 * 1102 * xycintr: hardware interrupt. 1103 */ 1104 int 1105 xycintr(v) 1106 void *v; 1107 1108 { 1109 struct xyc_softc *xycsc = v; 1110 1111 /* kick the event counter */ 1112 1113 xycsc->sc_intrcnt.ev_count++; 1114 1115 /* remove as many done IOPBs as possible */ 1116 1117 xyc_remove_iorq(xycsc); 1118 1119 /* start any iorq's already waiting */ 1120 1121 xyc_start(xycsc, NULL); 1122 1123 return (1); 1124 } 1125 /* 1126 * end of interrupt function 1127 */ 1128 1129 /* 1130 * i n t e r n a l f u n c t i o n s 1131 */ 1132 1133 /* 1134 * xyc_rqinit: fill out the fields of an I/O request 1135 */ 1136 1137 inline void 1138 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1139 struct xy_iorq *rq; 1140 struct xyc_softc *xyc; 1141 struct xy_softc *xy; 1142 int md; 1143 u_long blk; 1144 int cnt; 1145 caddr_t db; 1146 struct buf *bp; 1147 { 1148 rq->xyc = xyc; 1149 rq->xy = xy; 1150 rq->ttl = XYC_MAXTTL + 10; 1151 rq->mode = md; 1152 rq->tries = rq->errno = rq->lasterror = 0; 1153 rq->blockno = blk; 1154 rq->sectcnt = cnt; 1155 rq->dbuf = db; 1156 rq->buf = bp; 1157 } 1158 1159 /* 1160 * xyc_rqtopb: load up an IOPB based on an iorq 1161 */ 1162 1163 void 1164 xyc_rqtopb(iorq, iopb, cmd, subfun) 1165 struct xy_iorq *iorq; 1166 struct xy_iopb *iopb; 1167 int cmd, subfun; 1168 1169 { 1170 u_long block, dp; 1171 1172 /* normal IOPB case, standard stuff */ 1173 1174 /* chain bit handled later */ 1175 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1176 iopb->com = cmd; 1177 iopb->errno = 0; 1178 iopb->errs = 0; 1179 iopb->done = 0; 1180 if (iorq->xy) { 1181 iopb->unit = iorq->xy->xy_drive; 1182 iopb->dt = iorq->xy->drive_type; 1183 } else { 1184 iopb->unit = 0; 1185 iopb->dt = 0; 1186 } 1187 block = iorq->blockno; 1188 if (iorq->xy == NULL || block == 0) { 1189 iopb->sect = iopb->head = iopb->cyl = 0; 1190 } else { 1191 iopb->sect = block % iorq->xy->nsect; 1192 block = block / iorq->xy->nsect; 1193 iopb->head = block % iorq->xy->nhead; 1194 block = block / iorq->xy->nhead; 1195 iopb->cyl = block; 1196 } 1197 iopb->scnt = iorq->sectcnt; 1198 dp = (u_long) iorq->dbuf; 1199 if (iorq->dbuf == NULL) { 1200 iopb->dataa = 0; 1201 iopb->datar = 0; 1202 } else { 1203 iopb->dataa = (dp & 0xffff); 1204 iopb->datar = ((dp & 0xff0000) >> 16); 1205 } 1206 iopb->subfn = subfun; 1207 } 1208 1209 1210 /* 1211 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1212 */ 1213 1214 int 1215 xyc_unbusy(xyc, del) 1216 1217 struct xyc *xyc; 1218 int del; 1219 1220 { 1221 while (del-- > 0) { 1222 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1223 break; 1224 DELAY(1); 1225 } 1226 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1227 } 1228 1229 /* 1230 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1231 * note that NORM requests are handled seperately. 1232 */ 1233 int 1234 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1235 struct xyc_softc *xycsc; 1236 int cmd, subfn, unit, block, scnt; 1237 char *dptr; 1238 int fullmode; 1239 1240 { 1241 int submode = XY_STATE(fullmode); 1242 struct xy_iorq *iorq = xycsc->ciorq; 1243 struct xy_iopb *iopb = xycsc->ciopb; 1244 1245 /* 1246 * is someone else using the control iopq wait for it if we can 1247 */ 1248 start: 1249 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1250 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1251 return(XY_ERR_FAIL); 1252 goto start; 1253 } 1254 1255 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1256 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1257 iorq->mode = XY_SUB_FREE; 1258 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1259 } 1260 1261 /* init iorq/iopb */ 1262 1263 xyc_rqinit(iorq, xycsc, 1264 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1265 fullmode, block, scnt, dptr, NULL); 1266 1267 /* load IOPB from iorq */ 1268 1269 xyc_rqtopb(iorq, iopb, cmd, subfn); 1270 1271 /* submit it for processing */ 1272 1273 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1274 1275 return(XY_ERR_AOK); 1276 } 1277 1278 /* 1279 * xyc_startbuf 1280 * start a buffer for running 1281 */ 1282 1283 int 1284 xyc_startbuf(xycsc, xysc, bp) 1285 struct xyc_softc *xycsc; 1286 struct xy_softc *xysc; 1287 struct buf *bp; 1288 1289 { 1290 int partno, error; 1291 struct xy_iorq *iorq; 1292 struct xy_iopb *iopb; 1293 u_long block; 1294 1295 iorq = xysc->xyrq; 1296 iopb = iorq->iopb; 1297 1298 /* get buf */ 1299 1300 if (bp == NULL) 1301 panic("xyc_startbuf null buf"); 1302 1303 partno = DISKPART(bp->b_dev); 1304 #ifdef XYC_DEBUG 1305 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1306 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1307 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1308 bp->b_bcount, bp->b_data); 1309 #endif 1310 1311 /* 1312 * load request. we have to calculate the correct block number based 1313 * on partition info. 1314 * 1315 * note that iorq points to the buffer as mapped into DVMA space, 1316 * where as the bp->b_data points to its non-DVMA mapping. 1317 */ 1318 1319 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1320 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1321 1322 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1323 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1324 if (error) { 1325 printf("%s: warning: cannot load DMA map\n", 1326 xycsc->sc_dev.dv_xname); 1327 return (XY_ERR_FAIL); /* XXX: need some sort of 1328 * call-back scheme here? */ 1329 } 1330 1331 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1332 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1333 ? BUS_DMASYNC_PREREAD 1334 : BUS_DMASYNC_PREWRITE); 1335 1336 /* init iorq and load iopb from it */ 1337 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1338 bp->b_bcount / XYFM_BPS, 1339 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1340 bp); 1341 1342 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1343 1344 /* Instrumentation. */ 1345 disk_busy(&xysc->sc_dk); 1346 1347 return (XY_ERR_AOK); 1348 } 1349 1350 1351 /* 1352 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1353 * if ok. if it fail returns an error code. type is XY_SUB_*. 1354 * 1355 * note: caller frees iorq in all cases except NORM 1356 * 1357 * return value: 1358 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1359 * WAIT: XY_AOK (success), <error-code> (failed) 1360 * POLL: <same as WAIT> 1361 * NOQ : <same as NORM> 1362 * 1363 * there are three sources for i/o requests: 1364 * [1] xystrategy: normal block I/O, using "struct buf" system. 1365 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1366 * [3] open/ioctl: these are I/O requests done in the context of a process, 1367 * and the process should block until they are done. 1368 * 1369 * software state is stored in the iorq structure. each iorq has an 1370 * iopb structure. the hardware understands the iopb structure. 1371 * every command must go through an iopb. a 450 handles one iopb at a 1372 * time, where as a 451 can take them in chains. [the 450 claims it 1373 * can handle chains, but is appears to be buggy...] iopb are allocated 1374 * in DVMA space at boot up time. each disk gets one iopb, and the 1375 * controller gets one (for POLL and WAIT commands). what happens if 1376 * the iopb is busy? for i/o type [1], the buffers are queued at the 1377 * "buff" layer and * picked up later by the interrupt routine. for case 1378 * [2] we can only be blocked if there is a WAIT type I/O request being 1379 * run. since this can only happen when we are crashing, we wait a sec 1380 * and then steal the IOPB. for case [3] the process can sleep 1381 * on the iorq free list until some iopbs are avaliable. 1382 */ 1383 1384 1385 int 1386 xyc_submit_iorq(xycsc, iorq, type) 1387 struct xyc_softc *xycsc; 1388 struct xy_iorq *iorq; 1389 int type; 1390 1391 { 1392 struct xy_iopb *iopb; 1393 u_long iopbaddr; 1394 1395 #ifdef XYC_DEBUG 1396 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1397 xycsc->sc_dev.dv_xname, iorq, type); 1398 #endif 1399 1400 /* first check and see if controller is busy */ 1401 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1402 #ifdef XYC_DEBUG 1403 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1404 #endif 1405 if (type == XY_SUB_NOQ) 1406 return (XY_ERR_FAIL); /* failed */ 1407 switch (type) { 1408 case XY_SUB_NORM: 1409 return XY_ERR_AOK; /* success */ 1410 case XY_SUB_WAIT: 1411 while (iorq->iopb->done == 0) { 1412 sleep(iorq, PRIBIO); 1413 } 1414 return (iorq->errno); 1415 case XY_SUB_POLL: /* steal controller */ 1416 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1417 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1418 panic("xyc_submit_iorq: stuck xyc"); 1419 printf("%s: stole controller\n", 1420 xycsc->sc_dev.dv_xname); 1421 break; 1422 default: 1423 panic("xyc_submit_iorq adding"); 1424 } 1425 } 1426 1427 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1428 if (iopb == NULL) { /* nothing doing? */ 1429 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1430 return(XY_ERR_AOK); 1431 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1432 } 1433 iopbaddr = (u_long) iopb - DVMA_BASE; 1434 1435 XYC_GO(xycsc->xyc, iopbaddr); 1436 1437 /* command now running, wrap it up */ 1438 switch (type) { 1439 case XY_SUB_NORM: 1440 case XY_SUB_NOQ: 1441 return (XY_ERR_AOK); /* success */ 1442 case XY_SUB_WAIT: 1443 while (iorq->iopb->done == 0) { 1444 sleep(iorq, PRIBIO); 1445 } 1446 return (iorq->errno); 1447 case XY_SUB_POLL: 1448 return (xyc_piodriver(xycsc, iorq)); 1449 default: 1450 panic("xyc_submit_iorq wrap up"); 1451 } 1452 panic("xyc_submit_iorq"); 1453 return 0; /* not reached */ 1454 } 1455 1456 1457 /* 1458 * xyc_chain: build a chain. return dvma address of first element in 1459 * the chain. iorq != NULL: means we only want that item on the chain. 1460 */ 1461 1462 struct xy_iopb * 1463 xyc_chain(xycsc, iorq) 1464 1465 struct xyc_softc *xycsc; 1466 struct xy_iorq *iorq; 1467 1468 { 1469 int togo, chain, hand; 1470 struct xy_iopb *iopb, *prev_iopb; 1471 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1472 1473 /* 1474 * promote control IOPB to the top 1475 */ 1476 if (iorq == NULL) { 1477 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1478 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1479 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1480 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1481 } 1482 /* 1483 * special case: if iorq != NULL then we have a POLL or WAIT request. 1484 * we let these take priority and do them first. 1485 */ 1486 if (iorq) { 1487 xycsc->xy_chain[0] = iorq; 1488 iorq->iopb->chen = 0; 1489 return(iorq->iopb); 1490 } 1491 1492 /* 1493 * NORM case: do round robin and maybe chain (if allowed and possible) 1494 */ 1495 1496 chain = 0; 1497 hand = xycsc->xy_hand; 1498 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1499 1500 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1501 1502 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1503 xycsc->iopbase[hand].done) 1504 continue; /* not ready-for-i/o */ 1505 1506 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1507 iopb = xycsc->xy_chain[chain]->iopb; 1508 iopb->chen = 0; 1509 if (chain != 0) { /* adding a link to a chain? */ 1510 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1511 prev_iopb->chen = 1; 1512 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1513 } else { /* head of chain */ 1514 iorq = xycsc->xy_chain[chain]; 1515 } 1516 chain++; 1517 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1518 } 1519 return(iorq ? iorq->iopb : NULL); 1520 } 1521 1522 /* 1523 * xyc_piodriver 1524 * 1525 * programmed i/o driver. this function takes over the computer 1526 * and drains off the polled i/o request. it returns the status of the iorq 1527 * the caller is interesting in. 1528 */ 1529 int 1530 xyc_piodriver(xycsc, iorq) 1531 struct xyc_softc *xycsc; 1532 struct xy_iorq *iorq; 1533 1534 { 1535 int nreset = 0; 1536 int retval = 0; 1537 u_long res; 1538 #ifdef XYC_DEBUG 1539 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1540 #endif 1541 1542 while (iorq->iopb->done == 0) { 1543 1544 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1545 1546 /* we expect some progress soon */ 1547 if (res == XY_ERR_FAIL && nreset >= 2) { 1548 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1549 #ifdef XYC_DEBUG 1550 printf("xyc_piodriver: timeout\n"); 1551 #endif 1552 return (XY_ERR_FAIL); 1553 } 1554 if (res == XY_ERR_FAIL) { 1555 if (xyc_reset(xycsc, 0, 1556 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1557 XY_ERR_FAIL, 1558 0) == XY_ERR_FAIL) 1559 return (XY_ERR_FAIL); /* flushes all but POLL 1560 * requests, resets */ 1561 continue; 1562 } 1563 1564 xyc_remove_iorq(xycsc); /* may resubmit request */ 1565 1566 if (iorq->iopb->done == 0) 1567 xyc_start(xycsc, iorq); 1568 } 1569 1570 /* get return value */ 1571 1572 retval = iorq->errno; 1573 1574 #ifdef XYC_DEBUG 1575 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1576 iorq->errno, xyc_e2str(iorq->errno)); 1577 #endif 1578 1579 /* start up any bufs that have queued */ 1580 1581 xyc_start(xycsc, NULL); 1582 1583 return (retval); 1584 } 1585 1586 /* 1587 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1588 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1589 */ 1590 void 1591 xyc_xyreset(xycsc, xysc) 1592 struct xyc_softc *xycsc; 1593 struct xy_softc *xysc; 1594 1595 { 1596 struct xy_iopb tmpiopb; 1597 u_long addr; 1598 int del; 1599 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1600 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1601 xycsc->ciopb->ien = 0; 1602 xycsc->ciopb->com = XYCMD_RST; 1603 xycsc->ciopb->unit = xysc->xy_drive; 1604 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1605 1606 XYC_GO(xycsc->xyc, addr); 1607 1608 del = XYC_RESETUSEC; 1609 while (del > 0) { 1610 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1611 DELAY(1); 1612 del--; 1613 } 1614 1615 if (del <= 0 || xycsc->ciopb->errs) { 1616 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1617 xyc_e2str(xycsc->ciopb->errno)); 1618 del = xycsc->xyc->xyc_rsetup; 1619 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1620 panic("xyc_reset"); 1621 } else { 1622 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1623 } 1624 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1625 } 1626 1627 1628 /* 1629 * xyc_reset: reset everything: requests are marked as errors except 1630 * a polled request (which is resubmitted) 1631 */ 1632 int 1633 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1634 struct xyc_softc *xycsc; 1635 int quiet, error; 1636 struct xy_iorq *blastmode; 1637 struct xy_softc *xysc; 1638 1639 { 1640 int del = 0, lcv, retval = XY_ERR_AOK; 1641 1642 /* soft reset hardware */ 1643 1644 if (!quiet) 1645 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1646 del = xycsc->xyc->xyc_rsetup; 1647 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1648 if (del == XY_ERR_FAIL) { 1649 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1650 retval = XY_ERR_FAIL; 1651 } 1652 if (xysc) 1653 xyc_xyreset(xycsc, xysc); 1654 1655 /* fix queues based on "blast-mode" */ 1656 1657 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1658 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1659 1660 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1661 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1662 XY_STATE(iorq->mode) != XY_SUB_NORM) 1663 /* is it active? */ 1664 continue; 1665 1666 if (blastmode == XY_RSET_ALL || 1667 blastmode != iorq) { 1668 /* failed */ 1669 iorq->errno = error; 1670 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1671 switch (XY_STATE(iorq->mode)) { 1672 case XY_SUB_NORM: 1673 iorq->buf->b_error = EIO; 1674 iorq->buf->b_flags |= B_ERROR; 1675 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1676 1677 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1678 iorq->dmamap->dm_mapsize, 1679 (iorq->buf->b_flags & B_READ) 1680 ? BUS_DMASYNC_POSTREAD 1681 : BUS_DMASYNC_POSTWRITE); 1682 1683 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1684 1685 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1686 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1687 (xycsc->reqs[lcv].buf->b_bcount - 1688 xycsc->reqs[lcv].buf->b_resid)); 1689 biodone(iorq->buf); 1690 iorq->mode = XY_SUB_FREE; 1691 break; 1692 case XY_SUB_WAIT: 1693 wakeup(iorq); 1694 case XY_SUB_POLL: 1695 iorq->mode = 1696 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1697 break; 1698 } 1699 1700 } else { 1701 1702 /* resubmit, no need to do anything here */ 1703 } 1704 } 1705 1706 /* 1707 * now, if stuff is waiting, start it. 1708 * since we just reset it should go 1709 */ 1710 xyc_start(xycsc, NULL); 1711 1712 return (retval); 1713 } 1714 1715 /* 1716 * xyc_start: start waiting buffers 1717 */ 1718 1719 void 1720 xyc_start(xycsc, iorq) 1721 struct xyc_softc *xycsc; 1722 struct xy_iorq *iorq; 1723 1724 { 1725 int lcv; 1726 struct xy_softc *xy; 1727 1728 if (iorq == NULL) { 1729 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1730 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1731 if (xy->xyq.b_actf == NULL) continue; 1732 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1733 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1734 } 1735 } 1736 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1737 } 1738 1739 /* 1740 * xyc_remove_iorq: remove "done" IOPB's. 1741 */ 1742 1743 int 1744 xyc_remove_iorq(xycsc) 1745 struct xyc_softc *xycsc; 1746 1747 { 1748 int errno, rq, comm, errs; 1749 struct xyc *xyc = xycsc->xyc; 1750 u_long addr; 1751 struct xy_iopb *iopb; 1752 struct xy_iorq *iorq; 1753 struct buf *bp; 1754 1755 if (xyc->xyc_csr & XYC_DERR) { 1756 /* 1757 * DOUBLE ERROR: should never happen under normal use. This 1758 * error is so bad, you can't even tell which IOPB is bad, so 1759 * we dump them all. 1760 */ 1761 errno = XY_ERR_DERR; 1762 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1763 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1764 printf("%s: soft reset failed!\n", 1765 xycsc->sc_dev.dv_xname); 1766 panic("xyc_remove_iorq: controller DEAD"); 1767 } 1768 return (XY_ERR_AOK); 1769 } 1770 1771 /* 1772 * get iopb that is done, loop down the chain 1773 */ 1774 1775 if (xyc->xyc_csr & XYC_ERR) { 1776 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1777 } 1778 if (xyc->xyc_csr & XYC_IPND) { 1779 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1780 } 1781 1782 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1783 iorq = xycsc->xy_chain[rq]; 1784 if (iorq == NULL) break; /* done ! */ 1785 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1786 continue; /* free, or done */ 1787 iopb = iorq->iopb; 1788 if (iopb->done == 0) 1789 continue; /* not done yet */ 1790 1791 comm = iopb->com; 1792 errs = iopb->errs; 1793 1794 if (errs) 1795 iorq->errno = iopb->errno; 1796 else 1797 iorq->errno = 0; 1798 1799 /* handle non-fatal errors */ 1800 1801 if (errs && 1802 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1803 continue; /* AOK: we resubmitted it */ 1804 1805 1806 /* this iorq is now done (hasn't been restarted or anything) */ 1807 1808 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1809 xyc_perror(iorq, iopb, 0); 1810 1811 /* now, if read/write check to make sure we got all the data 1812 * we needed. (this may not be the case if we got an error in 1813 * the middle of a multisector request). */ 1814 1815 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1816 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1817 /* we just successfully processed a bad144 sector 1818 * note: if we are in bad 144 mode, the pointers have 1819 * been advanced already (see above) and are pointing 1820 * at the bad144 sector. to exit bad144 mode, we 1821 * must advance the pointers 1 sector and issue a new 1822 * request if there are still sectors left to process 1823 * 1824 */ 1825 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1826 1827 /* exit b144 mode */ 1828 iorq->mode = iorq->mode & (~XY_MODE_B144); 1829 1830 if (iorq->sectcnt) { /* more to go! */ 1831 iorq->lasterror = iorq->errno = iopb->errno = 0; 1832 iopb->errs = iopb->done = 0; 1833 iorq->tries = 0; 1834 iopb->scnt = iorq->sectcnt; 1835 iopb->cyl = iorq->blockno / 1836 iorq->xy->sectpercyl; 1837 iopb->head = 1838 (iorq->blockno / iorq->xy->nhead) % 1839 iorq->xy->nhead; 1840 iopb->sect = iorq->blockno % XYFM_BPS; 1841 addr = (u_long) iorq->dbuf; 1842 iopb->dataa = (addr & 0xffff); 1843 iopb->datar = ((addr & 0xff0000) >> 16); 1844 /* will resubit at end */ 1845 continue; 1846 } 1847 } 1848 /* final cleanup, totally done with this request */ 1849 1850 switch (XY_STATE(iorq->mode)) { 1851 case XY_SUB_NORM: 1852 bp = iorq->buf; 1853 if (errs) { 1854 bp->b_error = EIO; 1855 bp->b_flags |= B_ERROR; 1856 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1857 } else { 1858 bp->b_resid = 0; /* done */ 1859 } 1860 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1861 iorq->dmamap->dm_mapsize, 1862 (iorq->buf->b_flags & B_READ) 1863 ? BUS_DMASYNC_POSTREAD 1864 : BUS_DMASYNC_POSTWRITE); 1865 1866 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1867 1868 iorq->xy->xyq.b_actf = bp->b_actf; 1869 disk_unbusy(&iorq->xy->sc_dk, 1870 (bp->b_bcount - bp->b_resid)); 1871 iorq->mode = XY_SUB_FREE; 1872 biodone(bp); 1873 break; 1874 case XY_SUB_WAIT: 1875 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1876 wakeup(iorq); 1877 break; 1878 case XY_SUB_POLL: 1879 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1880 break; 1881 } 1882 } 1883 1884 return (XY_ERR_AOK); 1885 } 1886 1887 /* 1888 * xyc_perror: print error. 1889 * - if still_trying is true: we got an error, retried and got a 1890 * different error. in that case lasterror is the old error, 1891 * and errno is the new one. 1892 * - if still_trying is not true, then if we ever had an error it 1893 * is in lasterror. also, if iorq->errno == 0, then we recovered 1894 * from that error (otherwise iorq->errno == iorq->lasterror). 1895 */ 1896 void 1897 xyc_perror(iorq, iopb, still_trying) 1898 struct xy_iorq *iorq; 1899 struct xy_iopb *iopb; 1900 int still_trying; 1901 1902 { 1903 1904 int error = iorq->lasterror; 1905 1906 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1907 : iorq->xyc->sc_dev.dv_xname); 1908 if (iorq->buf) 1909 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1910 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1911 printf("%s %d/%d/%d: ", 1912 (iopb->com == XYCMD_RD) ? "read" : "write", 1913 iopb->cyl, iopb->head, iopb->sect); 1914 printf("%s", xyc_e2str(error)); 1915 1916 if (still_trying) 1917 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1918 else 1919 if (iorq->errno == 0) 1920 printf(" [recovered in %d tries]", iorq->tries); 1921 1922 printf("\n"); 1923 } 1924 1925 /* 1926 * xyc_error: non-fatal error encountered... recover. 1927 * return AOK if resubmitted, return FAIL if this iopb is done 1928 */ 1929 int 1930 xyc_error(xycsc, iorq, iopb, comm) 1931 struct xyc_softc *xycsc; 1932 struct xy_iorq *iorq; 1933 struct xy_iopb *iopb; 1934 int comm; 1935 1936 { 1937 int errno = iorq->errno; 1938 int erract = xyc_entoact(errno); 1939 int oldmode, advance, i; 1940 1941 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1942 oldmode = iorq->mode; 1943 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1944 /* make xyc_start ignore us */ 1945 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1946 iorq->mode = oldmode; 1947 } 1948 /* check for read/write to a sector in bad144 table if bad: redirect 1949 * request to bad144 area */ 1950 1951 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1952 (iorq->mode & XY_MODE_B144) == 0) { 1953 advance = iorq->sectcnt - iopb->scnt; 1954 XYC_ADVANCE(iorq, advance); 1955 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1956 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1957 iorq->blockno % iorq->xy->nsect)) != -1) { 1958 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1959 * redirect */ 1960 iopb->errno = iopb->done = iopb->errs = 0; 1961 iopb->scnt = 1; 1962 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1963 /* second to last acyl */ 1964 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1965 * standard */ 1966 iopb->head = i / iorq->xy->nhead; 1967 iopb->sect = i % iorq->xy->nhead; 1968 /* will resubmit when we come out of remove_iorq */ 1969 return (XY_ERR_AOK); /* recovered! */ 1970 } 1971 } 1972 1973 /* 1974 * it isn't a bad144 sector, must be real error! see if we can retry 1975 * it? 1976 */ 1977 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1978 xyc_perror(iorq, iopb, 1); /* inform of error state 1979 * change */ 1980 iorq->lasterror = errno; 1981 1982 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1983 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1984 iorq->tries++; 1985 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1986 /* will resubmit at end of remove_iorq */ 1987 return (XY_ERR_AOK); /* recovered! */ 1988 } 1989 1990 /* failed to recover from this error */ 1991 return (XY_ERR_FAIL); 1992 } 1993 1994 /* 1995 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1996 */ 1997 void 1998 xyc_tick(arg) 1999 void *arg; 2000 2001 { 2002 struct xyc_softc *xycsc = arg; 2003 int lcv, s, reset = 0; 2004 2005 /* reduce ttl for each request if one goes to zero, reset xyc */ 2006 s = splbio(); 2007 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2008 if (xycsc->reqs[lcv].mode == 0 || 2009 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2010 continue; 2011 xycsc->reqs[lcv].ttl--; 2012 if (xycsc->reqs[lcv].ttl == 0) 2013 reset = 1; 2014 } 2015 if (reset) { 2016 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2017 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2018 } 2019 splx(s); 2020 2021 /* until next time */ 2022 2023 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2024 } 2025 2026 /* 2027 * xyc_ioctlcmd: this function provides a user level interface to the 2028 * controller via ioctl. this allows "format" programs to be written 2029 * in user code, and is also useful for some debugging. we return 2030 * an error code. called at user priority. 2031 * 2032 * XXX missing a few commands (see the 7053 driver for ideas) 2033 */ 2034 int 2035 xyc_ioctlcmd(xy, dev, xio) 2036 struct xy_softc *xy; 2037 dev_t dev; 2038 struct xd_iocmd *xio; 2039 2040 { 2041 int s, rqno, dummy = 0; 2042 caddr_t dvmabuf = NULL, buf = NULL; 2043 struct xyc_softc *xycsc; 2044 int rseg, error; 2045 bus_dma_segment_t seg; 2046 2047 /* check sanity of requested command */ 2048 2049 switch (xio->cmd) { 2050 2051 case XYCMD_NOP: /* no op: everything should be zero */ 2052 if (xio->subfn || xio->dptr || xio->dlen || 2053 xio->block || xio->sectcnt) 2054 return (EINVAL); 2055 break; 2056 2057 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2058 case XYCMD_WR: 2059 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2060 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2061 return (EINVAL); 2062 break; 2063 2064 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2065 return (EINVAL); 2066 2067 break; 2068 2069 default: 2070 return (EINVAL);/* ??? */ 2071 } 2072 2073 xycsc = xy->parent; 2074 2075 /* create DVMA buffer for request if needed */ 2076 if (xio->dlen) { 2077 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2078 &seg, 1, &rseg, BUS_DMA_WAITOK); 2079 if (error) { 2080 return (error); 2081 } 2082 dvmabuf = (caddr_t)seg.ds_addr; 2083 2084 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2085 &buf, 2086 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2087 if (error) { 2088 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2089 return (error); 2090 } 2091 if (xio->cmd == XYCMD_WR) { 2092 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2093 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2094 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2095 return (error); 2096 } 2097 } 2098 } 2099 /* do it! */ 2100 2101 error = 0; 2102 s = splbio(); 2103 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2104 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2105 if (rqno == XY_ERR_FAIL) { 2106 error = EIO; 2107 goto done; 2108 } 2109 xio->errno = xycsc->ciorq->errno; 2110 xio->tries = xycsc->ciorq->tries; 2111 XYC_DONE(xycsc, dummy); 2112 2113 if (xio->cmd == XYCMD_RD) 2114 error = copyout(buf, xio->dptr, xio->dlen); 2115 2116 done: 2117 splx(s); 2118 if (dvmabuf) { 2119 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2120 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2121 } 2122 return (error); 2123 } 2124 2125 /* 2126 * xyc_e2str: convert error code number into an error string 2127 */ 2128 char * 2129 xyc_e2str(no) 2130 int no; 2131 { 2132 switch (no) { 2133 case XY_ERR_FAIL: 2134 return ("Software fatal error"); 2135 case XY_ERR_DERR: 2136 return ("DOUBLE ERROR"); 2137 case XY_ERR_AOK: 2138 return ("Successful completion"); 2139 case XY_ERR_IPEN: 2140 return("Interrupt pending"); 2141 case XY_ERR_BCFL: 2142 return("Busy conflict"); 2143 case XY_ERR_TIMO: 2144 return("Operation timeout"); 2145 case XY_ERR_NHDR: 2146 return("Header not found"); 2147 case XY_ERR_HARD: 2148 return("Hard ECC error"); 2149 case XY_ERR_ICYL: 2150 return("Illegal cylinder address"); 2151 case XY_ERR_ISEC: 2152 return("Illegal sector address"); 2153 case XY_ERR_SMAL: 2154 return("Last sector too small"); 2155 case XY_ERR_SACK: 2156 return("Slave ACK error (non-existent memory)"); 2157 case XY_ERR_CHER: 2158 return("Cylinder and head/header error"); 2159 case XY_ERR_SRTR: 2160 return("Auto-seek retry successful"); 2161 case XY_ERR_WPRO: 2162 return("Write-protect error"); 2163 case XY_ERR_UIMP: 2164 return("Unimplemented command"); 2165 case XY_ERR_DNRY: 2166 return("Drive not ready"); 2167 case XY_ERR_SZER: 2168 return("Sector count zero"); 2169 case XY_ERR_DFLT: 2170 return("Drive faulted"); 2171 case XY_ERR_ISSZ: 2172 return("Illegal sector size"); 2173 case XY_ERR_SLTA: 2174 return("Self test A"); 2175 case XY_ERR_SLTB: 2176 return("Self test B"); 2177 case XY_ERR_SLTC: 2178 return("Self test C"); 2179 case XY_ERR_SOFT: 2180 return("Soft ECC error"); 2181 case XY_ERR_SFOK: 2182 return("Soft ECC error recovered"); 2183 case XY_ERR_IHED: 2184 return("Illegal head"); 2185 case XY_ERR_DSEQ: 2186 return("Disk sequencer error"); 2187 case XY_ERR_SEEK: 2188 return("Seek error"); 2189 default: 2190 return ("Unknown error"); 2191 } 2192 } 2193 2194 int 2195 xyc_entoact(errno) 2196 2197 int errno; 2198 2199 { 2200 switch (errno) { 2201 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2202 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2203 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2204 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2205 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2206 2207 return(XY_ERA_PROG); /* program error ! */ 2208 2209 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2210 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2211 case XY_ERR_SOFT: 2212 2213 return(XY_ERA_HARD); /* hard error, retry */ 2214 2215 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2216 2217 return(XY_ERA_RSET); /* hard error reset */ 2218 2219 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2220 2221 return(XY_ERA_SOFT); /* an FYI error */ 2222 2223 case XY_ERR_WPRO: 2224 2225 return(XY_ERA_WPRO); /* write protect */ 2226 } 2227 2228 return(XY_ERA_PROG); /* ??? */ 2229 } 2230
Indexes created Tue Sep 30 11:09:46 GMT 2025