xy.c revision 1.9
1 /* $NetBSD: xy.c,v 1.9 1998/06/20 13:12:55 mrg Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #undef XYC_DEBUG /* full debug */ 54 #undef XYC_DIAG /* extra sanity checks */ 55 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 56 #define XYC_DIAG /* link in with master DIAG option */ 57 #endif 58 59 #include <sys/param.h> 60 #include <sys/proc.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/file.h> 64 #include <sys/stat.h> 65 #include <sys/ioctl.h> 66 #include <sys/buf.h> 67 #include <sys/uio.h> 68 #include <sys/malloc.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/syslog.h> 73 #include <sys/dkbad.h> 74 #include <sys/conf.h> 75 76 #include <vm/vm.h> 77 #include <vm/vm_kern.h> 78 79 #include <machine/autoconf.h> 80 #include <machine/bus.h> 81 #include <machine/conf.h> 82 83 #include <dev/sun/disklabel.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 static int xyc_probe __P((void *, void *)); 181 182 static void xydummystrat __P((struct buf *)); 183 int xygetdisklabel __P((struct xy_softc *, void *)); 184 185 /* 186 * cfattach's: device driver interface to autoconfig 187 */ 188 189 struct cfattach xyc_ca = { 190 sizeof(struct xyc_softc), xycmatch, xycattach 191 }; 192 193 struct cfattach xy_ca = { 194 sizeof(struct xy_softc), xymatch, xyattach 195 }; 196 197 extern struct cfdriver xy_cd; 198 199 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 200 int driveno; /* unit number */ 201 int fullmode; /* submit mode */ 202 int booting; /* are we booting or not? */ 203 }; 204 205 /* 206 * dkdriver 207 */ 208 209 struct dkdriver xydkdriver = { xystrategy }; 210 211 /* 212 * start: disk label fix code (XXX) 213 */ 214 215 static void *xy_labeldata; 216 217 static void 218 xydummystrat(bp) 219 struct buf *bp; 220 { 221 if (bp->b_bcount != XYFM_BPS) 222 panic("xydummystrat"); 223 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 224 bp->b_flags |= B_DONE; 225 bp->b_flags &= ~B_BUSY; 226 } 227 228 int 229 xygetdisklabel(xy, b) 230 struct xy_softc *xy; 231 void *b; 232 { 233 char *err; 234 struct sun_disklabel *sdl; 235 236 /* We already have the label data in `b'; setup for dummy strategy */ 237 xy_labeldata = b; 238 239 /* Required parameter for readdisklabel() */ 240 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 241 242 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 243 xydummystrat, 244 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 245 if (err) { 246 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 247 return(XY_ERR_FAIL); 248 } 249 250 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 251 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 252 if (sdl->sl_magic == SUN_DKMAGIC) 253 xy->pcyl = sdl->sl_pcylinders; 254 else { 255 printf("%s: WARNING: no `pcyl' in disk label.\n", 256 xy->sc_dev.dv_xname); 257 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 258 xy->sc_dk.dk_label->d_acylinders; 259 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 260 xy->sc_dev.dv_xname, xy->pcyl); 261 } 262 263 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 264 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 265 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 266 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 267 xy->sectpercyl = xy->nhead * xy->nsect; 268 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 269 * sun->bsd */ 270 return(XY_ERR_AOK); 271 } 272 273 /* 274 * end: disk label fix code (XXX) 275 */ 276 277 /* 278 * a u t o c o n f i g f u n c t i o n s 279 */ 280 281 /* 282 * xycmatch: determine if xyc is present or not. we do a 283 * soft reset to detect the xyc. 284 */ 285 int 286 xyc_probe(vaddr, arg) 287 void *vaddr; 288 void *arg; 289 { 290 struct xyc *xyc = vaddr; 291 292 return (xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL); 293 } 294 295 int xycmatch(parent, cf, aux) 296 struct device *parent; 297 struct cfdata *cf; 298 void *aux; 299 { 300 struct vme_attach_args *va = aux; 301 vme_chipset_tag_t ct = va->vma_chipset_tag; 302 bus_space_tag_t bt = va->vma_bustag; 303 vme_mod_t mod; 304 305 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 306 307 return (vme_bus_probe(ct, bt, va->vma_reg[0], 308 offsetof(struct xyc, xyc_rsetup), 1, 309 mod, xyc_probe, 0)); 310 } 311 312 /* 313 * xycattach: attach controller 314 */ 315 void 316 xycattach(parent, self, aux) 317 struct device *parent, *self; 318 void *aux; 319 320 { 321 struct vme_attach_args *va = aux; 322 vme_chipset_tag_t ct = va->vma_chipset_tag; 323 bus_space_tag_t bt = va->vma_bustag; 324 bus_space_handle_t bh; 325 vme_intr_handle_t ih; 326 vme_mod_t mod; 327 struct xyc_softc *xyc = (void *) self; 328 struct xyc_attach_args xa; 329 int lcv, res, pbsz, error; 330 bus_dma_segment_t seg; 331 int rseg; 332 333 /* get addressing and intr level stuff from autoconfig and load it 334 * into our xyc_softc. */ 335 336 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 337 338 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 339 mod, bt, &bh) != 0) 340 panic("xyc: vme_map"); 341 342 xyc->xyc = (struct xyc *) bh; 343 xyc->ipl = va->vma_pri; 344 xyc->vector = va->vma_vec; 345 xyc->no_ols = 0; /* XXX should be from config */ 346 347 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 348 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 349 350 /* 351 * allocate and zero buffers 352 * check boundaries of the KVA's ... all IOPBs must reside in 353 * the same 64K region. 354 */ 355 356 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 357 358 error = bus_dmamem_alloc( 359 xyc->dmatag, 360 pbsz, /* size */ 361 64*1024, /* boundary */ 362 0, /* alignment */ 363 &seg, 364 1, /* # of segments */ 365 &rseg, /* actual # of segments */ 366 BUS_DMA_NOWAIT); 367 if (error) { 368 printf("%s: DMA buffer map error %d\n", 369 xyc->sc_dev.dv_xname, error); 370 return; 371 } 372 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 373 374 error = bus_dmamem_map( 375 xyc->dmatag, 376 &seg, 377 rseg, 378 XYC_MAXIOPB * sizeof(struct xy_iopb), 379 (caddr_t *)&xyc->iopbase, 380 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 381 if (error) { 382 bus_dmamem_free(xyc->dmatag, &seg, rseg); 383 printf("%s: DMA buffer map error %d\n", 384 xyc->sc_dev.dv_xname, error); 385 return; 386 } 387 bzero(xyc->iopbase, pbsz); 388 389 xyc->reqs = (struct xy_iorq *) 390 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 391 if (xyc->reqs == NULL) 392 panic("xyc malloc"); 393 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 394 395 /* 396 * init iorq to iopb pointers, and non-zero fields in the 397 * iopb which never change. 398 */ 399 400 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 401 xyc->xy_chain[lcv] = NULL; 402 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 403 xyc->iopbase[lcv].asr = 1; /* always the same */ 404 xyc->iopbase[lcv].eef = 1; /* always the same */ 405 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 406 xyc->iopbase[lcv].aud = 1; /* always the same */ 407 xyc->iopbase[lcv].relo = 1; /* always the same */ 408 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 409 410 error = bus_dmamap_create( 411 xyc->dmatag, 412 MAXPHYS, /* size */ 413 1, /* nsegments */ 414 MAXPHYS, /* maxsegsz */ 415 0, /* boundary */ 416 BUS_DMA_NOWAIT, 417 &xyc->reqs[lcv].dmamap); 418 if (error) { 419 printf("%s: DMA buffer map create error %d\n", 420 xyc->sc_dev.dv_xname, error); 421 return; 422 } 423 } 424 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 425 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 426 xyc->xy_hand = 0; 427 428 /* read controller parameters and insure we have a 450/451 */ 429 430 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 431 res = xyc->ciopb->ctyp; 432 XYC_DONE(xyc, error); 433 if (res != XYCT_450) { 434 if (error) 435 printf(": %s: ", xyc_e2str(error)); 436 printf(": doesn't identify as a 450/451\n"); 437 return; 438 } 439 printf(": Xylogics 450/451"); 440 if (xyc->no_ols) 441 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 442 printf("\n"); 443 if (error) { 444 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 445 xyc_e2str(error)); 446 return; 447 } 448 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 449 printf("%s: 24 bit addressing turned off\n", 450 xyc->sc_dev.dv_xname); 451 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 452 printf("to enable 24 bit mode and this driver\n"); 453 return; 454 } 455 456 /* link in interrupt with higher level software */ 457 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 458 vme_intr_establish(ct, ih, xycintr, xyc); 459 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 460 vme_bus_establish(ct, &xyc->sc_dev); 461 462 463 /* now we must look for disks using autoconfig */ 464 xa.fullmode = XY_SUB_POLL; 465 xa.booting = 1; 466 467 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 468 (void) config_found(self, (void *) &xa, NULL); 469 470 /* start the watchdog clock */ 471 timeout(xyc_tick, xyc, XYC_TICKCNT); 472 473 } 474 475 /* 476 * xymatch: probe for disk. 477 * 478 * note: we almost always say disk is present. this allows us to 479 * spin up and configure a disk after the system is booted (we can 480 * call xyattach!). 481 */ 482 int 483 xymatch(parent, cf, aux) 484 struct device *parent; 485 struct cfdata *cf; 486 void *aux; 487 { 488 struct xyc_attach_args *xa = aux; 489 490 /* looking for autoconf wildcard or exact match */ 491 492 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 493 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 494 return 0; 495 496 return 1; 497 498 } 499 500 /* 501 * xyattach: attach a disk. this can be called from autoconf and also 502 * from xyopen/xystrategy. 503 */ 504 void 505 xyattach(parent, self, aux) 506 struct device *parent, *self; 507 void *aux; 508 509 { 510 struct xy_softc *xy = (void *) self, *oxy; 511 struct xyc_softc *xyc = (void *) parent; 512 struct xyc_attach_args *xa = aux; 513 int spt, mb, blk, lcv, fmode, s = 0, newstate; 514 struct dkbad *dkb; 515 int rseg, error; 516 bus_dma_segment_t seg; 517 caddr_t dmaddr; 518 caddr_t buf; 519 520 /* 521 * Always re-initialize the disk structure. We want statistics 522 * to start with a clean slate. 523 */ 524 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 525 xy->sc_dk.dk_driver = &xydkdriver; 526 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 527 528 /* if booting, init the xy_softc */ 529 530 if (xa->booting) { 531 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 532 xy->flags = 0; 533 xy->parent = xyc; 534 535 /* init queue of waiting bufs */ 536 537 xy->xyq.b_active = 0; 538 xy->xyq.b_actf = 0; 539 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 540 541 xy->xyrq = &xyc->reqs[xa->driveno]; 542 543 } 544 xy->xy_drive = xa->driveno; 545 fmode = xa->fullmode; 546 xyc->sc_drives[xa->driveno] = xy; 547 548 /* if not booting, make sure we are the only process in the attach for 549 * this drive. if locked out, sleep on it. */ 550 551 if (!xa->booting) { 552 s = splbio(); 553 while (xy->state == XY_DRIVE_ATTACHING) { 554 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 555 splx(s); 556 return; 557 } 558 } 559 printf("%s at %s", 560 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 561 } 562 563 /* we now have control */ 564 xy->state = XY_DRIVE_ATTACHING; 565 newstate = XY_DRIVE_UNKNOWN; 566 567 buf = NULL; 568 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 569 &seg, 1, &rseg, BUS_DMA_NOWAIT); 570 if (error) { 571 printf("%s: DMA buffer alloc error %d\n", 572 xy->sc_dev.dv_xname, error); 573 goto done; 574 } 575 dmaddr = (caddr_t)seg.ds_addr; 576 577 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 578 &buf, 579 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 580 if (error) { 581 printf("%s: DMA buffer alloc error %d\n", 582 xy->sc_dev.dv_xname, error); 583 bus_dmamem_free(xyc->dmatag, &seg, rseg); 584 goto done; 585 } 586 587 588 /* first try and reset the drive */ 589 590 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 591 XYC_DONE(xyc, error); 592 if (error == XY_ERR_DNRY) { 593 printf(" drive %d: off-line\n", xa->driveno); 594 goto done; 595 } 596 if (error) { 597 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 598 goto done; 599 } 600 printf(" drive %d: ready", xa->driveno); 601 602 /* 603 * now set drive parameters (to semi-bogus values) so we can read the 604 * disk label. 605 */ 606 xy->pcyl = xy->ncyl = 1; 607 xy->acyl = 0; 608 xy->nhead = 1; 609 xy->nsect = 1; 610 xy->sectpercyl = 1; 611 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 612 xy->dkb.bt_bad[lcv].bt_cyl = 613 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 614 615 /* read disk label */ 616 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 617 xy->drive_type++) { 618 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 619 dmaddr, fmode); 620 XYC_DONE(xyc, error); 621 if (error == XY_ERR_AOK) break; 622 } 623 624 if (error != XY_ERR_AOK) { 625 printf("\n%s: reading disk label failed: %s\n", 626 xy->sc_dev.dv_xname, xyc_e2str(error)); 627 goto done; 628 } 629 printf(" (drive type %d)\n", xy->drive_type); 630 631 newstate = XY_DRIVE_NOLABEL; 632 633 xy->hw_spt = spt = 0; /* XXX needed ? */ 634 /* Attach the disk: must be before getdisklabel to malloc label */ 635 disk_attach(&xy->sc_dk); 636 637 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 638 goto done; 639 640 /* inform the user of what is up */ 641 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 642 buf, xy->pcyl); 643 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 644 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 645 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 646 XYFM_BPS); 647 648 /* 649 * 450/451 stupidity: the drive type is encoded into the format 650 * of the disk. the drive type in the IOPB must match the drive 651 * type in the format, or you will not be able to do I/O to the 652 * disk (you get header not found errors). if you have two drives 653 * of different sizes that have the same drive type in their 654 * formatting then you are out of luck. 655 * 656 * this problem was corrected in the 753/7053. 657 */ 658 659 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 660 oxy = xyc->sc_drives[lcv]; 661 if (oxy == NULL || oxy == xy) continue; 662 if (oxy->drive_type != xy->drive_type) continue; 663 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 664 xy->nhead != oxy->nhead) { 665 printf("%s: %s and %s must be the same size!\n", 666 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 667 oxy->sc_dev.dv_xname); 668 panic("xy drive size mismatch"); 669 } 670 } 671 672 673 /* now set the real drive parameters! */ 674 675 blk = (xy->nsect - 1) + 676 ((xy->nhead - 1) * xy->nsect) + 677 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 678 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 679 XYC_DONE(xyc, error); 680 if (error) { 681 printf("%s: write drive size failed: %s\n", 682 xy->sc_dev.dv_xname, xyc_e2str(error)); 683 goto done; 684 } 685 newstate = XY_DRIVE_ONLINE; 686 687 /* 688 * read bad144 table. this table resides on the first sector of the 689 * last track of the disk (i.e. second cyl of "acyl" area). 690 */ 691 692 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 693 /* last cyl */ 694 (xy->nhead - 1) * xy->nsect; /* last head */ 695 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 696 dmaddr, fmode); 697 XYC_DONE(xyc, error); 698 if (error) { 699 printf("%s: reading bad144 failed: %s\n", 700 xy->sc_dev.dv_xname, xyc_e2str(error)); 701 goto done; 702 } 703 704 /* check dkbad for sanity */ 705 dkb = (struct dkbad *) buf; 706 for (lcv = 0; lcv < 126; lcv++) { 707 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 708 dkb->bt_bad[lcv].bt_cyl == 0) && 709 dkb->bt_bad[lcv].bt_trksec == 0xffff) 710 continue; /* blank */ 711 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 712 break; 713 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 714 break; 715 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 716 break; 717 } 718 if (lcv != 126) { 719 printf("%s: warning: invalid bad144 sector!\n", 720 xy->sc_dev.dv_xname); 721 } else { 722 bcopy(buf, &xy->dkb, XYFM_BPS); 723 } 724 725 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 726 727 done: 728 if (buf != NULL) { 729 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 730 bus_dmamem_free(xyc->dmatag, &seg, rseg); 731 } 732 733 xy->state = newstate; 734 if (!xa->booting) { 735 wakeup(&xy->state); 736 splx(s); 737 } 738 } 739 740 /* 741 * end of autoconfig functions 742 */ 743 744 /* 745 * { b , c } d e v s w f u n c t i o n s 746 */ 747 748 /* 749 * xyclose: close device 750 */ 751 int 752 xyclose(dev, flag, fmt, p) 753 dev_t dev; 754 int flag, fmt; 755 struct proc *p; 756 757 { 758 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 759 int part = DISKPART(dev); 760 761 /* clear mask bits */ 762 763 switch (fmt) { 764 case S_IFCHR: 765 xy->sc_dk.dk_copenmask &= ~(1 << part); 766 break; 767 case S_IFBLK: 768 xy->sc_dk.dk_bopenmask &= ~(1 << part); 769 break; 770 } 771 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 772 773 return 0; 774 } 775 776 /* 777 * xydump: crash dump system 778 */ 779 int 780 xydump(dev, blkno, va, size) 781 dev_t dev; 782 daddr_t blkno; 783 caddr_t va; 784 size_t size; 785 { 786 int unit, part; 787 struct xy_softc *xy; 788 789 unit = DISKUNIT(dev); 790 if (unit >= xy_cd.cd_ndevs) 791 return ENXIO; 792 part = DISKPART(dev); 793 794 xy = xy_cd.cd_devs[unit]; 795 796 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 797 'a' + part); 798 799 return ENXIO; 800 801 /* outline: globals: "dumplo" == sector number of partition to start 802 * dump at (convert to physical sector with partition table) 803 * "dumpsize" == size of dump in clicks "physmem" == size of physical 804 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 805 * physmem) 806 * 807 * dump a copy of physical memory to the dump device starting at sector 808 * "dumplo" in the swap partition (make sure > 0). map in pages as 809 * we go. use polled I/O. 810 * 811 * XXX how to handle NON_CONTIG? */ 812 813 } 814 815 /* 816 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 817 */ 818 int 819 xyioctl(dev, command, addr, flag, p) 820 dev_t dev; 821 u_long command; 822 caddr_t addr; 823 int flag; 824 struct proc *p; 825 826 { 827 struct xy_softc *xy; 828 struct xd_iocmd *xio; 829 int error, s, unit; 830 831 unit = DISKUNIT(dev); 832 833 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 834 return (ENXIO); 835 836 /* switch on ioctl type */ 837 838 switch (command) { 839 case DIOCSBAD: /* set bad144 info */ 840 if ((flag & FWRITE) == 0) 841 return EBADF; 842 s = splbio(); 843 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 844 splx(s); 845 return 0; 846 847 case DIOCGDINFO: /* get disk label */ 848 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 849 return 0; 850 851 case DIOCGPART: /* get partition info */ 852 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 853 ((struct partinfo *) addr)->part = 854 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 855 return 0; 856 857 case DIOCSDINFO: /* set disk label */ 858 if ((flag & FWRITE) == 0) 859 return EBADF; 860 error = setdisklabel(xy->sc_dk.dk_label, 861 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 862 xy->sc_dk.dk_cpulabel); 863 if (error == 0) { 864 if (xy->state == XY_DRIVE_NOLABEL) 865 xy->state = XY_DRIVE_ONLINE; 866 } 867 return error; 868 869 case DIOCWLABEL: /* change write status of disk label */ 870 if ((flag & FWRITE) == 0) 871 return EBADF; 872 if (*(int *) addr) 873 xy->flags |= XY_WLABEL; 874 else 875 xy->flags &= ~XY_WLABEL; 876 return 0; 877 878 case DIOCWDINFO: /* write 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 /* Simulate opening partition 0 so write succeeds. */ 889 xy->sc_dk.dk_openmask |= (1 << 0); 890 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 891 xystrategy, xy->sc_dk.dk_label, 892 xy->sc_dk.dk_cpulabel); 893 xy->sc_dk.dk_openmask = 894 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 895 } 896 return error; 897 898 case DIOSXDCMD: 899 xio = (struct xd_iocmd *) addr; 900 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 901 return (error); 902 return (xyc_ioctlcmd(xy, dev, xio)); 903 904 default: 905 return ENOTTY; 906 } 907 } 908 909 /* 910 * xyopen: open drive 911 */ 912 913 int 914 xyopen(dev, flag, fmt, p) 915 dev_t dev; 916 int flag, fmt; 917 struct proc *p; 918 { 919 int unit, part; 920 struct xy_softc *xy; 921 struct xyc_attach_args xa; 922 923 /* first, could it be a valid target? */ 924 925 unit = DISKUNIT(dev); 926 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 927 return (ENXIO); 928 part = DISKPART(dev); 929 930 /* do we need to attach the drive? */ 931 932 if (xy->state == XY_DRIVE_UNKNOWN) { 933 xa.driveno = xy->xy_drive; 934 xa.fullmode = XY_SUB_WAIT; 935 xa.booting = 0; 936 xyattach((struct device *) xy->parent, 937 (struct device *) xy, &xa); 938 if (xy->state == XY_DRIVE_UNKNOWN) { 939 return (EIO); 940 } 941 } 942 /* check for partition */ 943 944 if (part != RAW_PART && 945 (part >= xy->sc_dk.dk_label->d_npartitions || 946 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 947 return (ENXIO); 948 } 949 /* set open masks */ 950 951 switch (fmt) { 952 case S_IFCHR: 953 xy->sc_dk.dk_copenmask |= (1 << part); 954 break; 955 case S_IFBLK: 956 xy->sc_dk.dk_bopenmask |= (1 << part); 957 break; 958 } 959 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 960 961 return 0; 962 } 963 964 int 965 xyread(dev, uio, flags) 966 dev_t dev; 967 struct uio *uio; 968 int flags; 969 { 970 971 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 972 } 973 974 int 975 xywrite(dev, uio, flags) 976 dev_t dev; 977 struct uio *uio; 978 int flags; 979 { 980 981 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 982 } 983 984 985 /* 986 * xysize: return size of a partition for a dump 987 */ 988 989 int 990 xysize(dev) 991 dev_t dev; 992 993 { 994 struct xy_softc *xysc; 995 int unit, part, size, omask; 996 997 /* valid unit? */ 998 unit = DISKUNIT(dev); 999 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1000 return (-1); 1001 1002 part = DISKPART(dev); 1003 omask = xysc->sc_dk.dk_openmask & (1 << part); 1004 1005 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1006 return (-1); 1007 1008 /* do it */ 1009 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1010 size = -1; /* only give valid size for swap partitions */ 1011 else 1012 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1013 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1014 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1015 return (-1); 1016 return (size); 1017 } 1018 1019 /* 1020 * xystrategy: buffering system interface to xy. 1021 */ 1022 1023 void 1024 xystrategy(bp) 1025 struct buf *bp; 1026 1027 { 1028 struct xy_softc *xy; 1029 int s, unit; 1030 struct xyc_attach_args xa; 1031 1032 unit = DISKUNIT(bp->b_dev); 1033 1034 /* check for live device */ 1035 1036 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1037 bp->b_blkno < 0 || 1038 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1039 bp->b_error = EINVAL; 1040 goto bad; 1041 } 1042 /* do we need to attach the drive? */ 1043 1044 if (xy->state == XY_DRIVE_UNKNOWN) { 1045 xa.driveno = xy->xy_drive; 1046 xa.fullmode = XY_SUB_WAIT; 1047 xa.booting = 0; 1048 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1049 if (xy->state == XY_DRIVE_UNKNOWN) { 1050 bp->b_error = EIO; 1051 goto bad; 1052 } 1053 } 1054 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1055 /* no I/O to unlabeled disks, unless raw partition */ 1056 bp->b_error = EIO; 1057 goto bad; 1058 } 1059 /* short circuit zero length request */ 1060 1061 if (bp->b_bcount == 0) 1062 goto done; 1063 1064 /* check bounds with label (disksubr.c). Determine the size of the 1065 * transfer, and make sure it is within the boundaries of the 1066 * partition. Adjust transfer if needed, and signal errors or early 1067 * completion. */ 1068 1069 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1070 (xy->flags & XY_WLABEL) != 0) <= 0) 1071 goto done; 1072 1073 /* 1074 * now we know we have a valid buf structure that we need to do I/O 1075 * on. 1076 */ 1077 s = splbio(); /* protect the queues */ 1078 1079 disksort(&xy->xyq, bp); 1080 1081 /* start 'em up */ 1082 1083 xyc_start(xy->parent, NULL); 1084 1085 /* done! */ 1086 1087 splx(s); 1088 return; 1089 1090 bad: /* tells upper layers we have an error */ 1091 bp->b_flags |= B_ERROR; 1092 done: /* tells upper layers we are done with this 1093 * buf */ 1094 bp->b_resid = bp->b_bcount; 1095 biodone(bp); 1096 } 1097 /* 1098 * end of {b,c}devsw functions 1099 */ 1100 1101 /* 1102 * i n t e r r u p t f u n c t i o n 1103 * 1104 * xycintr: hardware interrupt. 1105 */ 1106 int 1107 xycintr(v) 1108 void *v; 1109 1110 { 1111 struct xyc_softc *xycsc = v; 1112 1113 /* kick the event counter */ 1114 1115 xycsc->sc_intrcnt.ev_count++; 1116 1117 /* remove as many done IOPBs as possible */ 1118 1119 xyc_remove_iorq(xycsc); 1120 1121 /* start any iorq's already waiting */ 1122 1123 xyc_start(xycsc, NULL); 1124 1125 return (1); 1126 } 1127 /* 1128 * end of interrupt function 1129 */ 1130 1131 /* 1132 * i n t e r n a l f u n c t i o n s 1133 */ 1134 1135 /* 1136 * xyc_rqinit: fill out the fields of an I/O request 1137 */ 1138 1139 inline void 1140 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1141 struct xy_iorq *rq; 1142 struct xyc_softc *xyc; 1143 struct xy_softc *xy; 1144 int md; 1145 u_long blk; 1146 int cnt; 1147 caddr_t db; 1148 struct buf *bp; 1149 { 1150 rq->xyc = xyc; 1151 rq->xy = xy; 1152 rq->ttl = XYC_MAXTTL + 10; 1153 rq->mode = md; 1154 rq->tries = rq->errno = rq->lasterror = 0; 1155 rq->blockno = blk; 1156 rq->sectcnt = cnt; 1157 rq->dbuf = db; 1158 rq->buf = bp; 1159 } 1160 1161 /* 1162 * xyc_rqtopb: load up an IOPB based on an iorq 1163 */ 1164 1165 void 1166 xyc_rqtopb(iorq, iopb, cmd, subfun) 1167 struct xy_iorq *iorq; 1168 struct xy_iopb *iopb; 1169 int cmd, subfun; 1170 1171 { 1172 u_long block, dp; 1173 1174 /* normal IOPB case, standard stuff */ 1175 1176 /* chain bit handled later */ 1177 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1178 iopb->com = cmd; 1179 iopb->errno = 0; 1180 iopb->errs = 0; 1181 iopb->done = 0; 1182 if (iorq->xy) { 1183 iopb->unit = iorq->xy->xy_drive; 1184 iopb->dt = iorq->xy->drive_type; 1185 } else { 1186 iopb->unit = 0; 1187 iopb->dt = 0; 1188 } 1189 block = iorq->blockno; 1190 if (iorq->xy == NULL || block == 0) { 1191 iopb->sect = iopb->head = iopb->cyl = 0; 1192 } else { 1193 iopb->sect = block % iorq->xy->nsect; 1194 block = block / iorq->xy->nsect; 1195 iopb->head = block % iorq->xy->nhead; 1196 block = block / iorq->xy->nhead; 1197 iopb->cyl = block; 1198 } 1199 iopb->scnt = iorq->sectcnt; 1200 dp = (u_long) iorq->dbuf; 1201 if (iorq->dbuf == NULL) { 1202 iopb->dataa = 0; 1203 iopb->datar = 0; 1204 } else { 1205 iopb->dataa = (dp & 0xffff); 1206 iopb->datar = ((dp & 0xff0000) >> 16); 1207 } 1208 iopb->subfn = subfun; 1209 } 1210 1211 1212 /* 1213 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1214 */ 1215 1216 int 1217 xyc_unbusy(xyc, del) 1218 1219 struct xyc *xyc; 1220 int del; 1221 1222 { 1223 while (del-- > 0) { 1224 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1225 break; 1226 DELAY(1); 1227 } 1228 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1229 } 1230 1231 /* 1232 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1233 * note that NORM requests are handled seperately. 1234 */ 1235 int 1236 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1237 struct xyc_softc *xycsc; 1238 int cmd, subfn, unit, block, scnt; 1239 char *dptr; 1240 int fullmode; 1241 1242 { 1243 int submode = XY_STATE(fullmode); 1244 struct xy_iorq *iorq = xycsc->ciorq; 1245 struct xy_iopb *iopb = xycsc->ciopb; 1246 1247 /* 1248 * is someone else using the control iopq wait for it if we can 1249 */ 1250 start: 1251 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1252 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1253 return(XY_ERR_FAIL); 1254 goto start; 1255 } 1256 1257 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1258 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1259 iorq->mode = XY_SUB_FREE; 1260 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1261 } 1262 1263 /* init iorq/iopb */ 1264 1265 xyc_rqinit(iorq, xycsc, 1266 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1267 fullmode, block, scnt, dptr, NULL); 1268 1269 /* load IOPB from iorq */ 1270 1271 xyc_rqtopb(iorq, iopb, cmd, subfn); 1272 1273 /* submit it for processing */ 1274 1275 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1276 1277 return(XY_ERR_AOK); 1278 } 1279 1280 /* 1281 * xyc_startbuf 1282 * start a buffer for running 1283 */ 1284 1285 int 1286 xyc_startbuf(xycsc, xysc, bp) 1287 struct xyc_softc *xycsc; 1288 struct xy_softc *xysc; 1289 struct buf *bp; 1290 1291 { 1292 int partno, error; 1293 struct xy_iorq *iorq; 1294 struct xy_iopb *iopb; 1295 u_long block; 1296 1297 iorq = xysc->xyrq; 1298 iopb = iorq->iopb; 1299 1300 /* get buf */ 1301 1302 if (bp == NULL) 1303 panic("xyc_startbuf null buf"); 1304 1305 partno = DISKPART(bp->b_dev); 1306 #ifdef XYC_DEBUG 1307 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1308 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1309 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1310 bp->b_bcount, bp->b_data); 1311 #endif 1312 1313 /* 1314 * load request. we have to calculate the correct block number based 1315 * on partition info. 1316 * 1317 * note that iorq points to the buffer as mapped into DVMA space, 1318 * where as the bp->b_data points to its non-DVMA mapping. 1319 */ 1320 1321 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1322 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1323 1324 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1325 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1326 if (error) { 1327 printf("%s: warning: cannot load DMA map\n", 1328 xycsc->sc_dev.dv_xname); 1329 return (XY_ERR_FAIL); /* XXX: need some sort of 1330 * call-back scheme here? */ 1331 } 1332 1333 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1334 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1335 ? BUS_DMASYNC_PREREAD 1336 : BUS_DMASYNC_PREWRITE); 1337 1338 /* init iorq and load iopb from it */ 1339 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1340 bp->b_bcount / XYFM_BPS, 1341 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1342 bp); 1343 1344 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1345 1346 /* Instrumentation. */ 1347 disk_busy(&xysc->sc_dk); 1348 1349 return (XY_ERR_AOK); 1350 } 1351 1352 1353 /* 1354 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1355 * if ok. if it fail returns an error code. type is XY_SUB_*. 1356 * 1357 * note: caller frees iorq in all cases except NORM 1358 * 1359 * return value: 1360 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1361 * WAIT: XY_AOK (success), <error-code> (failed) 1362 * POLL: <same as WAIT> 1363 * NOQ : <same as NORM> 1364 * 1365 * there are three sources for i/o requests: 1366 * [1] xystrategy: normal block I/O, using "struct buf" system. 1367 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1368 * [3] open/ioctl: these are I/O requests done in the context of a process, 1369 * and the process should block until they are done. 1370 * 1371 * software state is stored in the iorq structure. each iorq has an 1372 * iopb structure. the hardware understands the iopb structure. 1373 * every command must go through an iopb. a 450 handles one iopb at a 1374 * time, where as a 451 can take them in chains. [the 450 claims it 1375 * can handle chains, but is appears to be buggy...] iopb are allocated 1376 * in DVMA space at boot up time. each disk gets one iopb, and the 1377 * controller gets one (for POLL and WAIT commands). what happens if 1378 * the iopb is busy? for i/o type [1], the buffers are queued at the 1379 * "buff" layer and * picked up later by the interrupt routine. for case 1380 * [2] we can only be blocked if there is a WAIT type I/O request being 1381 * run. since this can only happen when we are crashing, we wait a sec 1382 * and then steal the IOPB. for case [3] the process can sleep 1383 * on the iorq free list until some iopbs are avaliable. 1384 */ 1385 1386 1387 int 1388 xyc_submit_iorq(xycsc, iorq, type) 1389 struct xyc_softc *xycsc; 1390 struct xy_iorq *iorq; 1391 int type; 1392 1393 { 1394 struct xy_iopb *iopb; 1395 u_long iopbaddr; 1396 1397 #ifdef XYC_DEBUG 1398 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1399 xycsc->sc_dev.dv_xname, iorq, type); 1400 #endif 1401 1402 /* first check and see if controller is busy */ 1403 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1404 #ifdef XYC_DEBUG 1405 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1406 #endif 1407 if (type == XY_SUB_NOQ) 1408 return (XY_ERR_FAIL); /* failed */ 1409 switch (type) { 1410 case XY_SUB_NORM: 1411 return XY_ERR_AOK; /* success */ 1412 case XY_SUB_WAIT: 1413 while (iorq->iopb->done == 0) { 1414 sleep(iorq, PRIBIO); 1415 } 1416 return (iorq->errno); 1417 case XY_SUB_POLL: /* steal controller */ 1418 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1419 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1420 panic("xyc_submit_iorq: stuck xyc"); 1421 printf("%s: stole controller\n", 1422 xycsc->sc_dev.dv_xname); 1423 break; 1424 default: 1425 panic("xyc_submit_iorq adding"); 1426 } 1427 } 1428 1429 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1430 if (iopb == NULL) { /* nothing doing? */ 1431 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1432 return(XY_ERR_AOK); 1433 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1434 } 1435 iopbaddr = (u_long) iopb - DVMA_BASE; 1436 1437 XYC_GO(xycsc->xyc, iopbaddr); 1438 1439 /* command now running, wrap it up */ 1440 switch (type) { 1441 case XY_SUB_NORM: 1442 case XY_SUB_NOQ: 1443 return (XY_ERR_AOK); /* success */ 1444 case XY_SUB_WAIT: 1445 while (iorq->iopb->done == 0) { 1446 sleep(iorq, PRIBIO); 1447 } 1448 return (iorq->errno); 1449 case XY_SUB_POLL: 1450 return (xyc_piodriver(xycsc, iorq)); 1451 default: 1452 panic("xyc_submit_iorq wrap up"); 1453 } 1454 panic("xyc_submit_iorq"); 1455 return 0; /* not reached */ 1456 } 1457 1458 1459 /* 1460 * xyc_chain: build a chain. return dvma address of first element in 1461 * the chain. iorq != NULL: means we only want that item on the chain. 1462 */ 1463 1464 struct xy_iopb * 1465 xyc_chain(xycsc, iorq) 1466 1467 struct xyc_softc *xycsc; 1468 struct xy_iorq *iorq; 1469 1470 { 1471 int togo, chain, hand; 1472 struct xy_iopb *iopb, *prev_iopb; 1473 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1474 1475 /* 1476 * promote control IOPB to the top 1477 */ 1478 if (iorq == NULL) { 1479 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1480 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1481 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1482 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1483 } 1484 /* 1485 * special case: if iorq != NULL then we have a POLL or WAIT request. 1486 * we let these take priority and do them first. 1487 */ 1488 if (iorq) { 1489 xycsc->xy_chain[0] = iorq; 1490 iorq->iopb->chen = 0; 1491 return(iorq->iopb); 1492 } 1493 1494 /* 1495 * NORM case: do round robin and maybe chain (if allowed and possible) 1496 */ 1497 1498 chain = 0; 1499 hand = xycsc->xy_hand; 1500 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1501 1502 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1503 1504 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1505 xycsc->iopbase[hand].done) 1506 continue; /* not ready-for-i/o */ 1507 1508 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1509 iopb = xycsc->xy_chain[chain]->iopb; 1510 iopb->chen = 0; 1511 if (chain != 0) { /* adding a link to a chain? */ 1512 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1513 prev_iopb->chen = 1; 1514 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1515 } else { /* head of chain */ 1516 iorq = xycsc->xy_chain[chain]; 1517 } 1518 chain++; 1519 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1520 } 1521 return(iorq ? iorq->iopb : NULL); 1522 } 1523 1524 /* 1525 * xyc_piodriver 1526 * 1527 * programmed i/o driver. this function takes over the computer 1528 * and drains off the polled i/o request. it returns the status of the iorq 1529 * the caller is interesting in. 1530 */ 1531 int 1532 xyc_piodriver(xycsc, iorq) 1533 struct xyc_softc *xycsc; 1534 struct xy_iorq *iorq; 1535 1536 { 1537 int nreset = 0; 1538 int retval = 0; 1539 u_long res; 1540 #ifdef XYC_DEBUG 1541 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1542 #endif 1543 1544 while (iorq->iopb->done == 0) { 1545 1546 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1547 1548 /* we expect some progress soon */ 1549 if (res == XY_ERR_FAIL && nreset >= 2) { 1550 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1551 #ifdef XYC_DEBUG 1552 printf("xyc_piodriver: timeout\n"); 1553 #endif 1554 return (XY_ERR_FAIL); 1555 } 1556 if (res == XY_ERR_FAIL) { 1557 if (xyc_reset(xycsc, 0, 1558 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1559 XY_ERR_FAIL, 1560 0) == XY_ERR_FAIL) 1561 return (XY_ERR_FAIL); /* flushes all but POLL 1562 * requests, resets */ 1563 continue; 1564 } 1565 1566 xyc_remove_iorq(xycsc); /* may resubmit request */ 1567 1568 if (iorq->iopb->done == 0) 1569 xyc_start(xycsc, iorq); 1570 } 1571 1572 /* get return value */ 1573 1574 retval = iorq->errno; 1575 1576 #ifdef XYC_DEBUG 1577 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1578 iorq->errno, xyc_e2str(iorq->errno)); 1579 #endif 1580 1581 /* start up any bufs that have queued */ 1582 1583 xyc_start(xycsc, NULL); 1584 1585 return (retval); 1586 } 1587 1588 /* 1589 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1590 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1591 */ 1592 void 1593 xyc_xyreset(xycsc, xysc) 1594 struct xyc_softc *xycsc; 1595 struct xy_softc *xysc; 1596 1597 { 1598 struct xy_iopb tmpiopb; 1599 u_long addr; 1600 int del; 1601 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1602 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1603 xycsc->ciopb->ien = 0; 1604 xycsc->ciopb->com = XYCMD_RST; 1605 xycsc->ciopb->unit = xysc->xy_drive; 1606 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1607 1608 XYC_GO(xycsc->xyc, addr); 1609 1610 del = XYC_RESETUSEC; 1611 while (del > 0) { 1612 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1613 DELAY(1); 1614 del--; 1615 } 1616 1617 if (del <= 0 || xycsc->ciopb->errs) { 1618 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1619 xyc_e2str(xycsc->ciopb->errno)); 1620 del = xycsc->xyc->xyc_rsetup; 1621 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1622 panic("xyc_reset"); 1623 } else { 1624 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1625 } 1626 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1627 } 1628 1629 1630 /* 1631 * xyc_reset: reset everything: requests are marked as errors except 1632 * a polled request (which is resubmitted) 1633 */ 1634 int 1635 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1636 struct xyc_softc *xycsc; 1637 int quiet, error; 1638 struct xy_iorq *blastmode; 1639 struct xy_softc *xysc; 1640 1641 { 1642 int del = 0, lcv, retval = XY_ERR_AOK; 1643 1644 /* soft reset hardware */ 1645 1646 if (!quiet) 1647 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1648 del = xycsc->xyc->xyc_rsetup; 1649 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1650 if (del == XY_ERR_FAIL) { 1651 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1652 retval = XY_ERR_FAIL; 1653 } 1654 if (xysc) 1655 xyc_xyreset(xycsc, xysc); 1656 1657 /* fix queues based on "blast-mode" */ 1658 1659 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1660 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1661 1662 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1663 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1664 XY_STATE(iorq->mode) != XY_SUB_NORM) 1665 /* is it active? */ 1666 continue; 1667 1668 if (blastmode == XY_RSET_ALL || 1669 blastmode != iorq) { 1670 /* failed */ 1671 iorq->errno = error; 1672 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1673 switch (XY_STATE(iorq->mode)) { 1674 case XY_SUB_NORM: 1675 iorq->buf->b_error = EIO; 1676 iorq->buf->b_flags |= B_ERROR; 1677 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1678 1679 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1680 iorq->dmamap->dm_mapsize, 1681 (iorq->buf->b_flags & B_READ) 1682 ? BUS_DMASYNC_POSTREAD 1683 : BUS_DMASYNC_POSTWRITE); 1684 1685 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1686 1687 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1688 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1689 (xycsc->reqs[lcv].buf->b_bcount - 1690 xycsc->reqs[lcv].buf->b_resid)); 1691 biodone(iorq->buf); 1692 iorq->mode = XY_SUB_FREE; 1693 break; 1694 case XY_SUB_WAIT: 1695 wakeup(iorq); 1696 case XY_SUB_POLL: 1697 iorq->mode = 1698 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1699 break; 1700 } 1701 1702 } else { 1703 1704 /* resubmit, no need to do anything here */ 1705 } 1706 } 1707 1708 /* 1709 * now, if stuff is waiting, start it. 1710 * since we just reset it should go 1711 */ 1712 xyc_start(xycsc, NULL); 1713 1714 return (retval); 1715 } 1716 1717 /* 1718 * xyc_start: start waiting buffers 1719 */ 1720 1721 void 1722 xyc_start(xycsc, iorq) 1723 struct xyc_softc *xycsc; 1724 struct xy_iorq *iorq; 1725 1726 { 1727 int lcv; 1728 struct xy_softc *xy; 1729 1730 if (iorq == NULL) { 1731 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1732 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1733 if (xy->xyq.b_actf == NULL) continue; 1734 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1735 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1736 } 1737 } 1738 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1739 } 1740 1741 /* 1742 * xyc_remove_iorq: remove "done" IOPB's. 1743 */ 1744 1745 int 1746 xyc_remove_iorq(xycsc) 1747 struct xyc_softc *xycsc; 1748 1749 { 1750 int errno, rq, comm, errs; 1751 struct xyc *xyc = xycsc->xyc; 1752 u_long addr; 1753 struct xy_iopb *iopb; 1754 struct xy_iorq *iorq; 1755 struct buf *bp; 1756 1757 if (xyc->xyc_csr & XYC_DERR) { 1758 /* 1759 * DOUBLE ERROR: should never happen under normal use. This 1760 * error is so bad, you can't even tell which IOPB is bad, so 1761 * we dump them all. 1762 */ 1763 errno = XY_ERR_DERR; 1764 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1765 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1766 printf("%s: soft reset failed!\n", 1767 xycsc->sc_dev.dv_xname); 1768 panic("xyc_remove_iorq: controller DEAD"); 1769 } 1770 return (XY_ERR_AOK); 1771 } 1772 1773 /* 1774 * get iopb that is done, loop down the chain 1775 */ 1776 1777 if (xyc->xyc_csr & XYC_ERR) { 1778 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1779 } 1780 if (xyc->xyc_csr & XYC_IPND) { 1781 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1782 } 1783 1784 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1785 iorq = xycsc->xy_chain[rq]; 1786 if (iorq == NULL) break; /* done ! */ 1787 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1788 continue; /* free, or done */ 1789 iopb = iorq->iopb; 1790 if (iopb->done == 0) 1791 continue; /* not done yet */ 1792 1793 comm = iopb->com; 1794 errs = iopb->errs; 1795 1796 if (errs) 1797 iorq->errno = iopb->errno; 1798 else 1799 iorq->errno = 0; 1800 1801 /* handle non-fatal errors */ 1802 1803 if (errs && 1804 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1805 continue; /* AOK: we resubmitted it */ 1806 1807 1808 /* this iorq is now done (hasn't been restarted or anything) */ 1809 1810 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1811 xyc_perror(iorq, iopb, 0); 1812 1813 /* now, if read/write check to make sure we got all the data 1814 * we needed. (this may not be the case if we got an error in 1815 * the middle of a multisector request). */ 1816 1817 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1818 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1819 /* we just successfully processed a bad144 sector 1820 * note: if we are in bad 144 mode, the pointers have 1821 * been advanced already (see above) and are pointing 1822 * at the bad144 sector. to exit bad144 mode, we 1823 * must advance the pointers 1 sector and issue a new 1824 * request if there are still sectors left to process 1825 * 1826 */ 1827 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1828 1829 /* exit b144 mode */ 1830 iorq->mode = iorq->mode & (~XY_MODE_B144); 1831 1832 if (iorq->sectcnt) { /* more to go! */ 1833 iorq->lasterror = iorq->errno = iopb->errno = 0; 1834 iopb->errs = iopb->done = 0; 1835 iorq->tries = 0; 1836 iopb->scnt = iorq->sectcnt; 1837 iopb->cyl = iorq->blockno / 1838 iorq->xy->sectpercyl; 1839 iopb->head = 1840 (iorq->blockno / iorq->xy->nhead) % 1841 iorq->xy->nhead; 1842 iopb->sect = iorq->blockno % XYFM_BPS; 1843 addr = (u_long) iorq->dbuf; 1844 iopb->dataa = (addr & 0xffff); 1845 iopb->datar = ((addr & 0xff0000) >> 16); 1846 /* will resubit at end */ 1847 continue; 1848 } 1849 } 1850 /* final cleanup, totally done with this request */ 1851 1852 switch (XY_STATE(iorq->mode)) { 1853 case XY_SUB_NORM: 1854 bp = iorq->buf; 1855 if (errs) { 1856 bp->b_error = EIO; 1857 bp->b_flags |= B_ERROR; 1858 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1859 } else { 1860 bp->b_resid = 0; /* done */ 1861 } 1862 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1863 iorq->dmamap->dm_mapsize, 1864 (iorq->buf->b_flags & B_READ) 1865 ? BUS_DMASYNC_POSTREAD 1866 : BUS_DMASYNC_POSTWRITE); 1867 1868 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1869 1870 iorq->xy->xyq.b_actf = bp->b_actf; 1871 disk_unbusy(&iorq->xy->sc_dk, 1872 (bp->b_bcount - bp->b_resid)); 1873 iorq->mode = XY_SUB_FREE; 1874 biodone(bp); 1875 break; 1876 case XY_SUB_WAIT: 1877 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1878 wakeup(iorq); 1879 break; 1880 case XY_SUB_POLL: 1881 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1882 break; 1883 } 1884 } 1885 1886 return (XY_ERR_AOK); 1887 } 1888 1889 /* 1890 * xyc_perror: print error. 1891 * - if still_trying is true: we got an error, retried and got a 1892 * different error. in that case lasterror is the old error, 1893 * and errno is the new one. 1894 * - if still_trying is not true, then if we ever had an error it 1895 * is in lasterror. also, if iorq->errno == 0, then we recovered 1896 * from that error (otherwise iorq->errno == iorq->lasterror). 1897 */ 1898 void 1899 xyc_perror(iorq, iopb, still_trying) 1900 struct xy_iorq *iorq; 1901 struct xy_iopb *iopb; 1902 int still_trying; 1903 1904 { 1905 1906 int error = iorq->lasterror; 1907 1908 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1909 : iorq->xyc->sc_dev.dv_xname); 1910 if (iorq->buf) 1911 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1912 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1913 printf("%s %d/%d/%d: ", 1914 (iopb->com == XYCMD_RD) ? "read" : "write", 1915 iopb->cyl, iopb->head, iopb->sect); 1916 printf("%s", xyc_e2str(error)); 1917 1918 if (still_trying) 1919 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1920 else 1921 if (iorq->errno == 0) 1922 printf(" [recovered in %d tries]", iorq->tries); 1923 1924 printf("\n"); 1925 } 1926 1927 /* 1928 * xyc_error: non-fatal error encountered... recover. 1929 * return AOK if resubmitted, return FAIL if this iopb is done 1930 */ 1931 int 1932 xyc_error(xycsc, iorq, iopb, comm) 1933 struct xyc_softc *xycsc; 1934 struct xy_iorq *iorq; 1935 struct xy_iopb *iopb; 1936 int comm; 1937 1938 { 1939 int errno = iorq->errno; 1940 int erract = xyc_entoact(errno); 1941 int oldmode, advance, i; 1942 1943 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1944 oldmode = iorq->mode; 1945 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1946 /* make xyc_start ignore us */ 1947 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1948 iorq->mode = oldmode; 1949 } 1950 /* check for read/write to a sector in bad144 table if bad: redirect 1951 * request to bad144 area */ 1952 1953 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1954 (iorq->mode & XY_MODE_B144) == 0) { 1955 advance = iorq->sectcnt - iopb->scnt; 1956 XYC_ADVANCE(iorq, advance); 1957 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1958 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1959 iorq->blockno % iorq->xy->nsect)) != -1) { 1960 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1961 * redirect */ 1962 iopb->errno = iopb->done = iopb->errs = 0; 1963 iopb->scnt = 1; 1964 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1965 /* second to last acyl */ 1966 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1967 * standard */ 1968 iopb->head = i / iorq->xy->nhead; 1969 iopb->sect = i % iorq->xy->nhead; 1970 /* will resubmit when we come out of remove_iorq */ 1971 return (XY_ERR_AOK); /* recovered! */ 1972 } 1973 } 1974 1975 /* 1976 * it isn't a bad144 sector, must be real error! see if we can retry 1977 * it? 1978 */ 1979 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1980 xyc_perror(iorq, iopb, 1); /* inform of error state 1981 * change */ 1982 iorq->lasterror = errno; 1983 1984 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1985 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1986 iorq->tries++; 1987 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1988 /* will resubmit at end of remove_iorq */ 1989 return (XY_ERR_AOK); /* recovered! */ 1990 } 1991 1992 /* failed to recover from this error */ 1993 return (XY_ERR_FAIL); 1994 } 1995 1996 /* 1997 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1998 */ 1999 void 2000 xyc_tick(arg) 2001 void *arg; 2002 2003 { 2004 struct xyc_softc *xycsc = arg; 2005 int lcv, s, reset = 0; 2006 2007 /* reduce ttl for each request if one goes to zero, reset xyc */ 2008 s = splbio(); 2009 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2010 if (xycsc->reqs[lcv].mode == 0 || 2011 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2012 continue; 2013 xycsc->reqs[lcv].ttl--; 2014 if (xycsc->reqs[lcv].ttl == 0) 2015 reset = 1; 2016 } 2017 if (reset) { 2018 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2019 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2020 } 2021 splx(s); 2022 2023 /* until next time */ 2024 2025 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2026 } 2027 2028 /* 2029 * xyc_ioctlcmd: this function provides a user level interface to the 2030 * controller via ioctl. this allows "format" programs to be written 2031 * in user code, and is also useful for some debugging. we return 2032 * an error code. called at user priority. 2033 * 2034 * XXX missing a few commands (see the 7053 driver for ideas) 2035 */ 2036 int 2037 xyc_ioctlcmd(xy, dev, xio) 2038 struct xy_softc *xy; 2039 dev_t dev; 2040 struct xd_iocmd *xio; 2041 2042 { 2043 int s, rqno, dummy = 0; 2044 caddr_t dvmabuf = NULL, buf = NULL; 2045 struct xyc_softc *xycsc; 2046 int rseg, error; 2047 bus_dma_segment_t seg; 2048 2049 /* check sanity of requested command */ 2050 2051 switch (xio->cmd) { 2052 2053 case XYCMD_NOP: /* no op: everything should be zero */ 2054 if (xio->subfn || xio->dptr || xio->dlen || 2055 xio->block || xio->sectcnt) 2056 return (EINVAL); 2057 break; 2058 2059 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2060 case XYCMD_WR: 2061 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2062 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2063 return (EINVAL); 2064 break; 2065 2066 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2067 return (EINVAL); 2068 2069 break; 2070 2071 default: 2072 return (EINVAL);/* ??? */ 2073 } 2074 2075 xycsc = xy->parent; 2076 2077 /* create DVMA buffer for request if needed */ 2078 if (xio->dlen) { 2079 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2080 &seg, 1, &rseg, BUS_DMA_WAITOK); 2081 if (error) { 2082 return (error); 2083 } 2084 dvmabuf = (caddr_t)seg.ds_addr; 2085 2086 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2087 &buf, 2088 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2089 if (error) { 2090 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2091 return (error); 2092 } 2093 if (xio->cmd == XYCMD_WR) { 2094 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2095 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2096 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2097 return (error); 2098 } 2099 } 2100 } 2101 /* do it! */ 2102 2103 error = 0; 2104 s = splbio(); 2105 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2106 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2107 if (rqno == XY_ERR_FAIL) { 2108 error = EIO; 2109 goto done; 2110 } 2111 xio->errno = xycsc->ciorq->errno; 2112 xio->tries = xycsc->ciorq->tries; 2113 XYC_DONE(xycsc, dummy); 2114 2115 if (xio->cmd == XYCMD_RD) 2116 error = copyout(buf, xio->dptr, xio->dlen); 2117 2118 done: 2119 splx(s); 2120 if (dvmabuf) { 2121 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2122 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2123 } 2124 return (error); 2125 } 2126 2127 /* 2128 * xyc_e2str: convert error code number into an error string 2129 */ 2130 char * 2131 xyc_e2str(no) 2132 int no; 2133 { 2134 switch (no) { 2135 case XY_ERR_FAIL: 2136 return ("Software fatal error"); 2137 case XY_ERR_DERR: 2138 return ("DOUBLE ERROR"); 2139 case XY_ERR_AOK: 2140 return ("Successful completion"); 2141 case XY_ERR_IPEN: 2142 return("Interrupt pending"); 2143 case XY_ERR_BCFL: 2144 return("Busy conflict"); 2145 case XY_ERR_TIMO: 2146 return("Operation timeout"); 2147 case XY_ERR_NHDR: 2148 return("Header not found"); 2149 case XY_ERR_HARD: 2150 return("Hard ECC error"); 2151 case XY_ERR_ICYL: 2152 return("Illegal cylinder address"); 2153 case XY_ERR_ISEC: 2154 return("Illegal sector address"); 2155 case XY_ERR_SMAL: 2156 return("Last sector too small"); 2157 case XY_ERR_SACK: 2158 return("Slave ACK error (non-existent memory)"); 2159 case XY_ERR_CHER: 2160 return("Cylinder and head/header error"); 2161 case XY_ERR_SRTR: 2162 return("Auto-seek retry successful"); 2163 case XY_ERR_WPRO: 2164 return("Write-protect error"); 2165 case XY_ERR_UIMP: 2166 return("Unimplemented command"); 2167 case XY_ERR_DNRY: 2168 return("Drive not ready"); 2169 case XY_ERR_SZER: 2170 return("Sector count zero"); 2171 case XY_ERR_DFLT: 2172 return("Drive faulted"); 2173 case XY_ERR_ISSZ: 2174 return("Illegal sector size"); 2175 case XY_ERR_SLTA: 2176 return("Self test A"); 2177 case XY_ERR_SLTB: 2178 return("Self test B"); 2179 case XY_ERR_SLTC: 2180 return("Self test C"); 2181 case XY_ERR_SOFT: 2182 return("Soft ECC error"); 2183 case XY_ERR_SFOK: 2184 return("Soft ECC error recovered"); 2185 case XY_ERR_IHED: 2186 return("Illegal head"); 2187 case XY_ERR_DSEQ: 2188 return("Disk sequencer error"); 2189 case XY_ERR_SEEK: 2190 return("Seek error"); 2191 default: 2192 return ("Unknown error"); 2193 } 2194 } 2195 2196 int 2197 xyc_entoact(errno) 2198 2199 int errno; 2200 2201 { 2202 switch (errno) { 2203 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2204 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2205 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2206 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2207 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2208 2209 return(XY_ERA_PROG); /* program error ! */ 2210 2211 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2212 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2213 case XY_ERR_SOFT: 2214 2215 return(XY_ERA_HARD); /* hard error, retry */ 2216 2217 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2218 2219 return(XY_ERA_RSET); /* hard error reset */ 2220 2221 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2222 2223 return(XY_ERA_SOFT); /* an FYI error */ 2224 2225 case XY_ERR_WPRO: 2226 2227 return(XY_ERA_WPRO); /* write protect */ 2228 } 2229 2230 return(XY_ERA_PROG); /* ??? */ 2231 } 2232
Indexes created Tue Sep 30 11:09:46 GMT 2025