xy.c revision 1.5
1 /* $NetBSD: xy.c,v 1.5 1998/02/04 00:39:50 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 * id: $NetBSD: xy.c,v 1.5 1998/02/04 00:39:50 thorpej Exp $ 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <machine/bus.h> 81 #include <machine/autoconf.h> 82 #include <machine/sun_disklabel.h> 83 #include <machine/conf.h> 84 85 #include <dev/vme/vmevar.h> 86 #include <dev/vme/xyreg.h> 87 #include <dev/vme/xyvar.h> 88 #include <dev/vme/xio.h> 89 90 #include "locators.h" 91 92 /* 93 * macros 94 */ 95 96 /* 97 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 98 */ 99 #define XYC_GO(XYC, ADDR) { \ 100 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 101 (ADDR) = ((ADDR) >> 8); \ 102 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_reloc_hi = (ADDR); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errno; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 150 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 151 char *xyc_e2str __P((int)); 152 int xyc_entoact __P((int)); 153 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int)); 155 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 156 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 157 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 158 int xyc_remove_iorq __P((struct xyc_softc *)); 159 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *)); 161 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 caddr_t, struct buf *)); 164 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 165 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 166 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 167 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 168 void xyc_tick __P((void *)); 169 int xyc_unbusy __P((struct xyc *, int)); 170 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 171 172 /* machine interrupt hook */ 173 int xycintr __P((void *)); 174 175 /* autoconf */ 176 int xycmatch __P((struct device *, struct cfdata *, void *)); 177 void xycattach __P((struct device *, struct device *, void *)); 178 int xymatch __P((struct device *, struct cfdata *, void *)); 179 void xyattach __P((struct device *, struct device *, void *)); 180 181 static void xydummystrat __P((struct buf *)); 182 int xygetdisklabel __P((struct xy_softc *, void *)); 183 184 /* 185 * 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 */ 284 285 int xycmatch(parent, cf, aux) 286 struct device *parent; 287 struct cfdata *cf; 288 void *aux; 289 { 290 struct vme_attach_args *va = aux; 291 vme_chipset_tag_t ct = va->vma_chipset_tag; 292 bus_space_tag_t bt = va->vma_bustag; 293 struct xyc *xyc; 294 vme_mod_t mod; 295 296 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 297 298 xyc = (struct xyc *) va->vma_reg[0]; 299 if (vme_bus_probe(ct, bt, (vme_addr_t)&xyc->xyc_rsetup, 1, mod)) { 300 if (xyc_unbusy(xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 301 return(0); 302 return (1); 303 } 304 return (0); 305 } 306 307 /* 308 * xycattach: attach controller 309 */ 310 void 311 xycattach(parent, self, aux) 312 struct device *parent, *self; 313 void *aux; 314 315 { 316 struct vme_attach_args *va = aux; 317 vme_chipset_tag_t ct = va->vma_chipset_tag; 318 bus_space_tag_t bt = va->vma_bustag; 319 bus_space_handle_t bh; 320 vme_intr_handle_t ih; 321 vme_mod_t mod; 322 struct xyc_softc *xyc = (void *) self; 323 struct xyc_attach_args xa; 324 int lcv, res, pbsz, error; 325 bus_dma_segment_t seg; 326 int rseg; 327 328 /* get addressing and intr level stuff from autoconfig and load it 329 * into our xyc_softc. */ 330 331 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 332 333 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 334 mod, bt, &bh) != 0) 335 panic("xyc: vme_map"); 336 337 xyc->xyc = (struct xyc *) bh; 338 xyc->ipl = va->vma_pri; 339 xyc->vector = va->vma_vec; 340 printf(" pri %d", va->vma_pri); 341 xyc->no_ols = 0; /* XXX should be from config */ 342 343 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 344 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 345 346 /* 347 * allocate and zero buffers 348 * check boundaries of the KVA's ... all IOPBs must reside in 349 * the same 64K region. 350 */ 351 352 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 353 354 error = bus_dmamem_alloc( 355 xyc->dmatag, 356 pbsz, /* size */ 357 64*1024, /* boundary */ 358 0, /* alignment */ 359 &seg, 360 1, /* # of segments */ 361 &rseg, /* actual # of segments */ 362 BUS_DMA_NOWAIT); 363 if (error) { 364 printf("%s: DMA buffer map error %d\n", 365 xyc->sc_dev.dv_xname, error); 366 return; 367 } 368 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 369 370 error = bus_dmamem_map( 371 xyc->dmatag, 372 &seg, 373 rseg, 374 XYC_MAXIOPB * sizeof(struct xy_iopb), 375 (caddr_t *)&xyc->iopbase, 376 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 377 if (error) { 378 bus_dmamem_free(xyc->dmatag, &seg, rseg); 379 printf("%s: DMA buffer map error %d\n", 380 xyc->sc_dev.dv_xname, error); 381 return; 382 } 383 bzero(xyc->iopbase, pbsz); 384 385 xyc->reqs = (struct xy_iorq *) 386 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 387 if (xyc->reqs == NULL) 388 panic("xyc malloc"); 389 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 390 391 /* 392 * init iorq to iopb pointers, and non-zero fields in the 393 * iopb which never change. 394 */ 395 396 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 397 xyc->xy_chain[lcv] = NULL; 398 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 399 xyc->iopbase[lcv].asr = 1; /* always the same */ 400 xyc->iopbase[lcv].eef = 1; /* always the same */ 401 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 402 xyc->iopbase[lcv].aud = 1; /* always the same */ 403 xyc->iopbase[lcv].relo = 1; /* always the same */ 404 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 405 406 error = bus_dmamap_create( 407 xyc->dmatag, 408 MAXPHYS, /* size */ 409 1, /* nsegments */ 410 MAXPHYS, /* maxsegsz */ 411 0, /* boundary */ 412 BUS_DMA_NOWAIT, 413 &xyc->reqs[lcv].dmamap); 414 if (error) { 415 printf("%s: DMA buffer map create error %d\n", 416 xyc->sc_dev.dv_xname, error); 417 return; 418 } 419 } 420 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 421 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 422 xyc->xy_hand = 0; 423 424 /* read controller parameters and insure we have a 450/451 */ 425 426 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 427 res = xyc->ciopb->ctyp; 428 XYC_DONE(xyc, error); 429 if (res != XYCT_450) { 430 if (error) 431 printf(": %s: ", xyc_e2str(error)); 432 printf(": doesn't identify as a 450/451\n"); 433 return; 434 } 435 printf(": Xylogics 450/451"); 436 if (xyc->no_ols) 437 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 438 printf("\n"); 439 if (error) { 440 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 441 xyc_e2str(error)); 442 return; 443 } 444 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 445 printf("%s: 24 bit addressing turned off\n", 446 xyc->sc_dev.dv_xname); 447 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 448 printf("to enable 24 bit mode and this driver\n"); 449 return; 450 } 451 452 /* link in interrupt with higher level software */ 453 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 454 vme_intr_establish(ct, ih, xycintr, xyc); 455 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 456 vme_bus_establish(ct, &xyc->sc_dev); 457 458 459 /* now we must look for disks using autoconfig */ 460 xa.fullmode = XY_SUB_POLL; 461 xa.booting = 1; 462 463 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 464 (void) config_found(self, (void *) &xa, NULL); 465 466 /* start the watchdog clock */ 467 timeout(xyc_tick, xyc, XYC_TICKCNT); 468 469 } 470 471 /* 472 * xymatch: probe for disk. 473 * 474 * note: we almost always say disk is present. this allows us to 475 * spin up and configure a disk after the system is booted (we can 476 * call xyattach!). 477 */ 478 int 479 xymatch(parent, cf, aux) 480 struct device *parent; 481 struct cfdata *cf; 482 void *aux; 483 { 484 struct xyc_attach_args *xa = aux; 485 486 /* looking for autoconf wildcard or exact match */ 487 488 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 489 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 490 return 0; 491 492 return 1; 493 494 } 495 496 /* 497 * xyattach: attach a disk. this can be called from autoconf and also 498 * from xyopen/xystrategy. 499 */ 500 void 501 xyattach(parent, self, aux) 502 struct device *parent, *self; 503 void *aux; 504 505 { 506 struct xy_softc *xy = (void *) self, *oxy; 507 struct xyc_softc *xyc = (void *) parent; 508 struct xyc_attach_args *xa = aux; 509 int spt, mb, blk, lcv, fmode, s = 0, newstate; 510 struct dkbad *dkb; 511 int rseg, error; 512 bus_dma_segment_t seg; 513 caddr_t dmaddr; 514 caddr_t buf; 515 516 /* 517 * Always re-initialize the disk structure. We want statistics 518 * to start with a clean slate. 519 */ 520 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 521 xy->sc_dk.dk_driver = &xydkdriver; 522 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 523 524 /* if booting, init the xy_softc */ 525 526 if (xa->booting) { 527 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 528 xy->flags = 0; 529 xy->parent = xyc; 530 531 /* init queue of waiting bufs */ 532 533 xy->xyq.b_active = 0; 534 xy->xyq.b_actf = 0; 535 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 536 537 xy->xyrq = &xyc->reqs[xa->driveno]; 538 539 } 540 xy->xy_drive = xa->driveno; 541 fmode = xa->fullmode; 542 xyc->sc_drives[xa->driveno] = xy; 543 544 /* if not booting, make sure we are the only process in the attach for 545 * this drive. if locked out, sleep on it. */ 546 547 if (!xa->booting) { 548 s = splbio(); 549 while (xy->state == XY_DRIVE_ATTACHING) { 550 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 551 splx(s); 552 return; 553 } 554 } 555 printf("%s at %s", 556 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 557 } 558 559 /* we now have control */ 560 xy->state = XY_DRIVE_ATTACHING; 561 newstate = XY_DRIVE_UNKNOWN; 562 563 buf = NULL; 564 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 565 &seg, 1, &rseg, BUS_DMA_NOWAIT); 566 if (error) { 567 printf("%s: DMA buffer alloc error %d\n", 568 xy->sc_dev.dv_xname, error); 569 goto done; 570 } 571 dmaddr = (caddr_t)seg.ds_addr; 572 573 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 574 &buf, 575 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 576 if (error) { 577 printf("%s: DMA buffer alloc error %d\n", 578 xy->sc_dev.dv_xname, error); 579 bus_dmamem_free(xyc->dmatag, &seg, rseg); 580 goto done; 581 } 582 583 584 /* first try and reset the drive */ 585 586 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 587 XYC_DONE(xyc, error); 588 if (error == XY_ERR_DNRY) { 589 printf(" drive %d: off-line\n", xa->driveno); 590 goto done; 591 } 592 if (error) { 593 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 594 goto done; 595 } 596 printf(" drive %d: ready", xa->driveno); 597 598 /* 599 * now set drive parameters (to semi-bogus values) so we can read the 600 * disk label. 601 */ 602 xy->pcyl = xy->ncyl = 1; 603 xy->acyl = 0; 604 xy->nhead = 1; 605 xy->nsect = 1; 606 xy->sectpercyl = 1; 607 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 608 xy->dkb.bt_bad[lcv].bt_cyl = 609 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 610 611 /* read disk label */ 612 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 613 xy->drive_type++) { 614 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 615 dmaddr, fmode); 616 XYC_DONE(xyc, error); 617 if (error == XY_ERR_AOK) break; 618 } 619 620 if (error != XY_ERR_AOK) { 621 printf("\n%s: reading disk label failed: %s\n", 622 xy->sc_dev.dv_xname, xyc_e2str(error)); 623 goto done; 624 } 625 printf(" (drive type %d)\n", xy->drive_type); 626 627 newstate = XY_DRIVE_NOLABEL; 628 629 xy->hw_spt = spt = 0; /* XXX needed ? */ 630 /* Attach the disk: must be before getdisklabel to malloc label */ 631 disk_attach(&xy->sc_dk); 632 633 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 634 goto done; 635 636 /* inform the user of what is up */ 637 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 638 buf, xy->pcyl); 639 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 640 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 641 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 642 XYFM_BPS); 643 644 /* 645 * 450/451 stupidity: the drive type is encoded into the format 646 * of the disk. the drive type in the IOPB must match the drive 647 * type in the format, or you will not be able to do I/O to the 648 * disk (you get header not found errors). if you have two drives 649 * of different sizes that have the same drive type in their 650 * formatting then you are out of luck. 651 * 652 * this problem was corrected in the 753/7053. 653 */ 654 655 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 656 oxy = xyc->sc_drives[lcv]; 657 if (oxy == NULL || oxy == xy) continue; 658 if (oxy->drive_type != xy->drive_type) continue; 659 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 660 xy->nhead != oxy->nhead) { 661 printf("%s: %s and %s must be the same size!\n", 662 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 663 oxy->sc_dev.dv_xname); 664 panic("xy drive size mismatch"); 665 } 666 } 667 668 669 /* now set the real drive parameters! */ 670 671 blk = (xy->nsect - 1) + 672 ((xy->nhead - 1) * xy->nsect) + 673 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 674 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 675 XYC_DONE(xyc, error); 676 if (error) { 677 printf("%s: write drive size failed: %s\n", 678 xy->sc_dev.dv_xname, xyc_e2str(error)); 679 goto done; 680 } 681 newstate = XY_DRIVE_ONLINE; 682 683 /* 684 * read bad144 table. this table resides on the first sector of the 685 * last track of the disk (i.e. second cyl of "acyl" area). 686 */ 687 688 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 689 /* last cyl */ 690 (xy->nhead - 1) * xy->nsect; /* last head */ 691 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 692 dmaddr, fmode); 693 XYC_DONE(xyc, error); 694 if (error) { 695 printf("%s: reading bad144 failed: %s\n", 696 xy->sc_dev.dv_xname, xyc_e2str(error)); 697 goto done; 698 } 699 700 /* check dkbad for sanity */ 701 dkb = (struct dkbad *) buf; 702 for (lcv = 0; lcv < 126; lcv++) { 703 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 704 dkb->bt_bad[lcv].bt_cyl == 0) && 705 dkb->bt_bad[lcv].bt_trksec == 0xffff) 706 continue; /* blank */ 707 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 708 break; 709 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 710 break; 711 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 712 break; 713 } 714 if (lcv != 126) { 715 printf("%s: warning: invalid bad144 sector!\n", 716 xy->sc_dev.dv_xname); 717 } else { 718 bcopy(buf, &xy->dkb, XYFM_BPS); 719 } 720 721 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 722 723 done: 724 if (buf != NULL) { 725 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 726 bus_dmamem_free(xyc->dmatag, &seg, rseg); 727 } 728 729 xy->state = newstate; 730 if (!xa->booting) { 731 wakeup(&xy->state); 732 splx(s); 733 } 734 } 735 736 /* 737 * end of autoconfig functions 738 */ 739 740 /* 741 * { b , c } d e v s w f u n c t i o n s 742 */ 743 744 /* 745 * xyclose: close device 746 */ 747 int 748 xyclose(dev, flag, fmt, p) 749 dev_t dev; 750 int flag, fmt; 751 struct proc *p; 752 753 { 754 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 755 int part = DISKPART(dev); 756 757 /* clear mask bits */ 758 759 switch (fmt) { 760 case S_IFCHR: 761 xy->sc_dk.dk_copenmask &= ~(1 << part); 762 break; 763 case S_IFBLK: 764 xy->sc_dk.dk_bopenmask &= ~(1 << part); 765 break; 766 } 767 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 768 769 return 0; 770 } 771 772 /* 773 * xydump: crash dump system 774 */ 775 int 776 xydump(dev, blkno, va, size) 777 dev_t dev; 778 daddr_t blkno; 779 caddr_t va; 780 size_t size; 781 { 782 int unit, part; 783 struct xy_softc *xy; 784 785 unit = DISKUNIT(dev); 786 if (unit >= xy_cd.cd_ndevs) 787 return ENXIO; 788 part = DISKPART(dev); 789 790 xy = xy_cd.cd_devs[unit]; 791 792 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 793 'a' + part); 794 795 return ENXIO; 796 797 /* outline: globals: "dumplo" == sector number of partition to start 798 * dump at (convert to physical sector with partition table) 799 * "dumpsize" == size of dump in clicks "physmem" == size of physical 800 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 801 * physmem) 802 * 803 * dump a copy of physical memory to the dump device starting at sector 804 * "dumplo" in the swap partition (make sure > 0). map in pages as 805 * we go. use polled I/O. 806 * 807 * XXX how to handle NON_CONTIG? */ 808 809 } 810 811 /* 812 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 813 */ 814 int 815 xyioctl(dev, command, addr, flag, p) 816 dev_t dev; 817 u_long command; 818 caddr_t addr; 819 int flag; 820 struct proc *p; 821 822 { 823 struct xy_softc *xy; 824 struct xd_iocmd *xio; 825 int error, s, unit; 826 827 unit = DISKUNIT(dev); 828 829 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 830 return (ENXIO); 831 832 /* switch on ioctl type */ 833 834 switch (command) { 835 case DIOCSBAD: /* set bad144 info */ 836 if ((flag & FWRITE) == 0) 837 return EBADF; 838 s = splbio(); 839 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 840 splx(s); 841 return 0; 842 843 case DIOCGDINFO: /* get disk label */ 844 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 845 return 0; 846 847 case DIOCGPART: /* get partition info */ 848 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 849 ((struct partinfo *) addr)->part = 850 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 851 return 0; 852 853 case DIOCSDINFO: /* set disk label */ 854 if ((flag & FWRITE) == 0) 855 return EBADF; 856 error = setdisklabel(xy->sc_dk.dk_label, 857 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 858 xy->sc_dk.dk_cpulabel); 859 if (error == 0) { 860 if (xy->state == XY_DRIVE_NOLABEL) 861 xy->state = XY_DRIVE_ONLINE; 862 } 863 return error; 864 865 case DIOCWLABEL: /* change write status of disk label */ 866 if ((flag & FWRITE) == 0) 867 return EBADF; 868 if (*(int *) addr) 869 xy->flags |= XY_WLABEL; 870 else 871 xy->flags &= ~XY_WLABEL; 872 return 0; 873 874 case DIOCWDINFO: /* write disk label */ 875 if ((flag & FWRITE) == 0) 876 return EBADF; 877 error = setdisklabel(xy->sc_dk.dk_label, 878 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 879 xy->sc_dk.dk_cpulabel); 880 if (error == 0) { 881 if (xy->state == XY_DRIVE_NOLABEL) 882 xy->state = XY_DRIVE_ONLINE; 883 884 /* Simulate opening partition 0 so write succeeds. */ 885 xy->sc_dk.dk_openmask |= (1 << 0); 886 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 887 xystrategy, xy->sc_dk.dk_label, 888 xy->sc_dk.dk_cpulabel); 889 xy->sc_dk.dk_openmask = 890 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 891 } 892 return error; 893 894 case DIOSXDCMD: 895 xio = (struct xd_iocmd *) addr; 896 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 897 return (error); 898 return (xyc_ioctlcmd(xy, dev, xio)); 899 900 default: 901 return ENOTTY; 902 } 903 } 904 905 /* 906 * xyopen: open drive 907 */ 908 909 int 910 xyopen(dev, flag, fmt, p) 911 dev_t dev; 912 int flag, fmt; 913 struct proc *p; 914 { 915 int unit, part; 916 struct xy_softc *xy; 917 struct xyc_attach_args xa; 918 919 /* first, could it be a valid target? */ 920 921 unit = DISKUNIT(dev); 922 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 923 return (ENXIO); 924 part = DISKPART(dev); 925 926 /* do we need to attach the drive? */ 927 928 if (xy->state == XY_DRIVE_UNKNOWN) { 929 xa.driveno = xy->xy_drive; 930 xa.fullmode = XY_SUB_WAIT; 931 xa.booting = 0; 932 xyattach((struct device *) xy->parent, 933 (struct device *) xy, &xa); 934 if (xy->state == XY_DRIVE_UNKNOWN) { 935 return (EIO); 936 } 937 } 938 /* check for partition */ 939 940 if (part != RAW_PART && 941 (part >= xy->sc_dk.dk_label->d_npartitions || 942 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 943 return (ENXIO); 944 } 945 /* set open masks */ 946 947 switch (fmt) { 948 case S_IFCHR: 949 xy->sc_dk.dk_copenmask |= (1 << part); 950 break; 951 case S_IFBLK: 952 xy->sc_dk.dk_bopenmask |= (1 << part); 953 break; 954 } 955 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 956 957 return 0; 958 } 959 960 int 961 xyread(dev, uio, flags) 962 dev_t dev; 963 struct uio *uio; 964 int flags; 965 { 966 967 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 968 } 969 970 int 971 xywrite(dev, uio, flags) 972 dev_t dev; 973 struct uio *uio; 974 int flags; 975 { 976 977 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 978 } 979 980 981 /* 982 * xysize: return size of a partition for a dump 983 */ 984 985 int 986 xysize(dev) 987 dev_t dev; 988 989 { 990 struct xy_softc *xysc; 991 int unit, part, size, omask; 992 993 /* valid unit? */ 994 unit = DISKUNIT(dev); 995 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 996 return (-1); 997 998 part = DISKPART(dev); 999 omask = xysc->sc_dk.dk_openmask & (1 << part); 1000 1001 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1002 return (-1); 1003 1004 /* do it */ 1005 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1006 size = -1; /* only give valid size for swap partitions */ 1007 else 1008 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1009 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1010 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1011 return (-1); 1012 return (size); 1013 } 1014 1015 /* 1016 * xystrategy: buffering system interface to xy. 1017 */ 1018 1019 void 1020 xystrategy(bp) 1021 struct buf *bp; 1022 1023 { 1024 struct xy_softc *xy; 1025 int s, unit; 1026 struct xyc_attach_args xa; 1027 1028 unit = DISKUNIT(bp->b_dev); 1029 1030 /* check for live device */ 1031 1032 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1033 bp->b_blkno < 0 || 1034 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1035 bp->b_error = EINVAL; 1036 goto bad; 1037 } 1038 /* do we need to attach the drive? */ 1039 1040 if (xy->state == XY_DRIVE_UNKNOWN) { 1041 xa.driveno = xy->xy_drive; 1042 xa.fullmode = XY_SUB_WAIT; 1043 xa.booting = 0; 1044 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1045 if (xy->state == XY_DRIVE_UNKNOWN) { 1046 bp->b_error = EIO; 1047 goto bad; 1048 } 1049 } 1050 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1051 /* no I/O to unlabeled disks, unless raw partition */ 1052 bp->b_error = EIO; 1053 goto bad; 1054 } 1055 /* short circuit zero length request */ 1056 1057 if (bp->b_bcount == 0) 1058 goto done; 1059 1060 /* check bounds with label (disksubr.c). Determine the size of the 1061 * transfer, and make sure it is within the boundaries of the 1062 * partition. Adjust transfer if needed, and signal errors or early 1063 * completion. */ 1064 1065 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1066 (xy->flags & XY_WLABEL) != 0) <= 0) 1067 goto done; 1068 1069 /* 1070 * now we know we have a valid buf structure that we need to do I/O 1071 * on. 1072 */ 1073 s = splbio(); /* protect the queues */ 1074 1075 disksort(&xy->xyq, bp); 1076 1077 /* start 'em up */ 1078 1079 xyc_start(xy->parent, NULL); 1080 1081 /* done! */ 1082 1083 splx(s); 1084 return; 1085 1086 bad: /* tells upper layers we have an error */ 1087 bp->b_flags |= B_ERROR; 1088 done: /* tells upper layers we are done with this 1089 * buf */ 1090 bp->b_resid = bp->b_bcount; 1091 biodone(bp); 1092 } 1093 /* 1094 * end of {b,c}devsw functions 1095 */ 1096 1097 /* 1098 * i n t e r r u p t f u n c t i o n 1099 * 1100 * xycintr: hardware interrupt. 1101 */ 1102 int 1103 xycintr(v) 1104 void *v; 1105 1106 { 1107 struct xyc_softc *xycsc = v; 1108 1109 /* kick the event counter */ 1110 1111 xycsc->sc_intrcnt.ev_count++; 1112 1113 /* remove as many done IOPBs as possible */ 1114 1115 xyc_remove_iorq(xycsc); 1116 1117 /* start any iorq's already waiting */ 1118 1119 xyc_start(xycsc, NULL); 1120 1121 return (1); 1122 } 1123 /* 1124 * end of interrupt function 1125 */ 1126 1127 /* 1128 * i n t e r n a l f u n c t i o n s 1129 */ 1130 1131 /* 1132 * xyc_rqinit: fill out the fields of an I/O request 1133 */ 1134 1135 inline void 1136 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1137 struct xy_iorq *rq; 1138 struct xyc_softc *xyc; 1139 struct xy_softc *xy; 1140 int md; 1141 u_long blk; 1142 int cnt; 1143 caddr_t db; 1144 struct buf *bp; 1145 { 1146 rq->xyc = xyc; 1147 rq->xy = xy; 1148 rq->ttl = XYC_MAXTTL + 10; 1149 rq->mode = md; 1150 rq->tries = rq->errno = rq->lasterror = 0; 1151 rq->blockno = blk; 1152 rq->sectcnt = cnt; 1153 rq->dbuf = db; 1154 rq->buf = bp; 1155 } 1156 1157 /* 1158 * xyc_rqtopb: load up an IOPB based on an iorq 1159 */ 1160 1161 void 1162 xyc_rqtopb(iorq, iopb, cmd, subfun) 1163 struct xy_iorq *iorq; 1164 struct xy_iopb *iopb; 1165 int cmd, subfun; 1166 1167 { 1168 u_long block, dp; 1169 1170 /* normal IOPB case, standard stuff */ 1171 1172 /* chain bit handled later */ 1173 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1174 iopb->com = cmd; 1175 iopb->errno = 0; 1176 iopb->errs = 0; 1177 iopb->done = 0; 1178 if (iorq->xy) { 1179 iopb->unit = iorq->xy->xy_drive; 1180 iopb->dt = iorq->xy->drive_type; 1181 } else { 1182 iopb->unit = 0; 1183 iopb->dt = 0; 1184 } 1185 block = iorq->blockno; 1186 if (iorq->xy == NULL || block == 0) { 1187 iopb->sect = iopb->head = iopb->cyl = 0; 1188 } else { 1189 iopb->sect = block % iorq->xy->nsect; 1190 block = block / iorq->xy->nsect; 1191 iopb->head = block % iorq->xy->nhead; 1192 block = block / iorq->xy->nhead; 1193 iopb->cyl = block; 1194 } 1195 iopb->scnt = iorq->sectcnt; 1196 dp = (u_long) iorq->dbuf; 1197 if (iorq->dbuf == NULL) { 1198 iopb->dataa = 0; 1199 iopb->datar = 0; 1200 } else { 1201 iopb->dataa = (dp & 0xffff); 1202 iopb->datar = ((dp & 0xff0000) >> 16); 1203 } 1204 iopb->subfn = subfun; 1205 } 1206 1207 1208 /* 1209 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1210 */ 1211 1212 int 1213 xyc_unbusy(xyc, del) 1214 1215 struct xyc *xyc; 1216 int del; 1217 1218 { 1219 while (del-- > 0) { 1220 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1221 break; 1222 DELAY(1); 1223 } 1224 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1225 } 1226 1227 /* 1228 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1229 * note that NORM requests are handled seperately. 1230 */ 1231 int 1232 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1233 struct xyc_softc *xycsc; 1234 int cmd, subfn, unit, block, scnt; 1235 char *dptr; 1236 int fullmode; 1237 1238 { 1239 int submode = XY_STATE(fullmode); 1240 struct xy_iorq *iorq = xycsc->ciorq; 1241 struct xy_iopb *iopb = xycsc->ciopb; 1242 1243 /* 1244 * is someone else using the control iopq wait for it if we can 1245 */ 1246 start: 1247 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1248 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1249 return(XY_ERR_FAIL); 1250 goto start; 1251 } 1252 1253 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1254 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1255 iorq->mode = XY_SUB_FREE; 1256 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1257 } 1258 1259 /* init iorq/iopb */ 1260 1261 xyc_rqinit(iorq, xycsc, 1262 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1263 fullmode, block, scnt, dptr, NULL); 1264 1265 /* load IOPB from iorq */ 1266 1267 xyc_rqtopb(iorq, iopb, cmd, subfn); 1268 1269 /* submit it for processing */ 1270 1271 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1272 1273 return(XY_ERR_AOK); 1274 } 1275 1276 /* 1277 * xyc_startbuf 1278 * start a buffer for running 1279 */ 1280 1281 int 1282 xyc_startbuf(xycsc, xysc, bp) 1283 struct xyc_softc *xycsc; 1284 struct xy_softc *xysc; 1285 struct buf *bp; 1286 1287 { 1288 int partno, error; 1289 struct xy_iorq *iorq; 1290 struct xy_iopb *iopb; 1291 u_long block; 1292 1293 iorq = xysc->xyrq; 1294 iopb = iorq->iopb; 1295 1296 /* get buf */ 1297 1298 if (bp == NULL) 1299 panic("xyc_startbuf null buf"); 1300 1301 partno = DISKPART(bp->b_dev); 1302 #ifdef XYC_DEBUG 1303 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1304 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1305 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1306 bp->b_bcount, bp->b_data); 1307 #endif 1308 1309 /* 1310 * load request. we have to calculate the correct block number based 1311 * on partition info. 1312 * 1313 * note that iorq points to the buffer as mapped into DVMA space, 1314 * where as the bp->b_data points to its non-DVMA mapping. 1315 */ 1316 1317 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1318 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1319 1320 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1321 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1322 if (error) { 1323 printf("%s: warning: cannot load DMA map\n", 1324 xycsc->sc_dev.dv_xname); 1325 return (XY_ERR_FAIL); /* XXX: need some sort of 1326 * call-back scheme here? */ 1327 } 1328 1329 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1330 (bp->b_flags & B_READ) 1331 ? BUS_DMASYNC_PREREAD 1332 : BUS_DMASYNC_PREWRITE); 1333 1334 /* init iorq and load iopb from it */ 1335 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1336 bp->b_bcount / XYFM_BPS, 1337 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1338 bp); 1339 1340 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1341 1342 /* Instrumentation. */ 1343 disk_busy(&xysc->sc_dk); 1344 1345 return (XY_ERR_AOK); 1346 } 1347 1348 1349 /* 1350 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1351 * if ok. if it fail returns an error code. type is XY_SUB_*. 1352 * 1353 * note: caller frees iorq in all cases except NORM 1354 * 1355 * return value: 1356 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1357 * WAIT: XY_AOK (success), <error-code> (failed) 1358 * POLL: <same as WAIT> 1359 * NOQ : <same as NORM> 1360 * 1361 * there are three sources for i/o requests: 1362 * [1] xystrategy: normal block I/O, using "struct buf" system. 1363 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1364 * [3] open/ioctl: these are I/O requests done in the context of a process, 1365 * and the process should block until they are done. 1366 * 1367 * software state is stored in the iorq structure. each iorq has an 1368 * iopb structure. the hardware understands the iopb structure. 1369 * every command must go through an iopb. a 450 handles one iopb at a 1370 * time, where as a 451 can take them in chains. [the 450 claims it 1371 * can handle chains, but is appears to be buggy...] iopb are allocated 1372 * in DVMA space at boot up time. each disk gets one iopb, and the 1373 * controller gets one (for POLL and WAIT commands). what happens if 1374 * the iopb is busy? for i/o type [1], the buffers are queued at the 1375 * "buff" layer and * picked up later by the interrupt routine. for case 1376 * [2] we can only be blocked if there is a WAIT type I/O request being 1377 * run. since this can only happen when we are crashing, we wait a sec 1378 * and then steal the IOPB. for case [3] the process can sleep 1379 * on the iorq free list until some iopbs are avaliable. 1380 */ 1381 1382 1383 int 1384 xyc_submit_iorq(xycsc, iorq, type) 1385 struct xyc_softc *xycsc; 1386 struct xy_iorq *iorq; 1387 int type; 1388 1389 { 1390 struct xy_iopb *iopb; 1391 u_long iopbaddr; 1392 1393 #ifdef XYC_DEBUG 1394 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1395 xycsc->sc_dev.dv_xname, iorq, type); 1396 #endif 1397 1398 /* first check and see if controller is busy */ 1399 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1400 #ifdef XYC_DEBUG 1401 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1402 #endif 1403 if (type == XY_SUB_NOQ) 1404 return (XY_ERR_FAIL); /* failed */ 1405 switch (type) { 1406 case XY_SUB_NORM: 1407 return XY_ERR_AOK; /* success */ 1408 case XY_SUB_WAIT: 1409 while (iorq->iopb->done == 0) { 1410 sleep(iorq, PRIBIO); 1411 } 1412 return (iorq->errno); 1413 case XY_SUB_POLL: /* steal controller */ 1414 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1415 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1416 panic("xyc_submit_iorq: stuck xyc"); 1417 printf("%s: stole controller\n", 1418 xycsc->sc_dev.dv_xname); 1419 break; 1420 default: 1421 panic("xyc_submit_iorq adding"); 1422 } 1423 } 1424 1425 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1426 if (iopb == NULL) { /* nothing doing? */ 1427 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1428 return(XY_ERR_AOK); 1429 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1430 } 1431 iopbaddr = (u_long) iopb - DVMA_BASE; 1432 1433 XYC_GO(xycsc->xyc, iopbaddr); 1434 1435 /* command now running, wrap it up */ 1436 switch (type) { 1437 case XY_SUB_NORM: 1438 case XY_SUB_NOQ: 1439 return (XY_ERR_AOK); /* success */ 1440 case XY_SUB_WAIT: 1441 while (iorq->iopb->done == 0) { 1442 sleep(iorq, PRIBIO); 1443 } 1444 return (iorq->errno); 1445 case XY_SUB_POLL: 1446 return (xyc_piodriver(xycsc, iorq)); 1447 default: 1448 panic("xyc_submit_iorq wrap up"); 1449 } 1450 panic("xyc_submit_iorq"); 1451 return 0; /* not reached */ 1452 } 1453 1454 1455 /* 1456 * xyc_chain: build a chain. return dvma address of first element in 1457 * the chain. iorq != NULL: means we only want that item on the chain. 1458 */ 1459 1460 struct xy_iopb * 1461 xyc_chain(xycsc, iorq) 1462 1463 struct xyc_softc *xycsc; 1464 struct xy_iorq *iorq; 1465 1466 { 1467 int togo, chain, hand; 1468 struct xy_iopb *iopb, *prev_iopb; 1469 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1470 1471 /* 1472 * promote control IOPB to the top 1473 */ 1474 if (iorq == NULL) { 1475 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1476 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1477 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1478 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1479 } 1480 /* 1481 * special case: if iorq != NULL then we have a POLL or WAIT request. 1482 * we let these take priority and do them first. 1483 */ 1484 if (iorq) { 1485 xycsc->xy_chain[0] = iorq; 1486 iorq->iopb->chen = 0; 1487 return(iorq->iopb); 1488 } 1489 1490 /* 1491 * NORM case: do round robin and maybe chain (if allowed and possible) 1492 */ 1493 1494 chain = 0; 1495 hand = xycsc->xy_hand; 1496 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1497 1498 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1499 1500 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1501 xycsc->iopbase[hand].done) 1502 continue; /* not ready-for-i/o */ 1503 1504 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1505 iopb = xycsc->xy_chain[chain]->iopb; 1506 iopb->chen = 0; 1507 if (chain != 0) { /* adding a link to a chain? */ 1508 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1509 prev_iopb->chen = 1; 1510 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1511 } else { /* head of chain */ 1512 iorq = xycsc->xy_chain[chain]; 1513 } 1514 chain++; 1515 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1516 } 1517 return(iorq ? iorq->iopb : NULL); 1518 } 1519 1520 /* 1521 * xyc_piodriver 1522 * 1523 * programmed i/o driver. this function takes over the computer 1524 * and drains off the polled i/o request. it returns the status of the iorq 1525 * the caller is interesting in. 1526 */ 1527 int 1528 xyc_piodriver(xycsc, iorq) 1529 struct xyc_softc *xycsc; 1530 struct xy_iorq *iorq; 1531 1532 { 1533 int nreset = 0; 1534 int retval = 0; 1535 u_long res; 1536 #ifdef XYC_DEBUG 1537 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1538 #endif 1539 1540 while (iorq->iopb->done == 0) { 1541 1542 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1543 1544 /* we expect some progress soon */ 1545 if (res == XY_ERR_FAIL && nreset >= 2) { 1546 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1547 #ifdef XYC_DEBUG 1548 printf("xyc_piodriver: timeout\n"); 1549 #endif 1550 return (XY_ERR_FAIL); 1551 } 1552 if (res == XY_ERR_FAIL) { 1553 if (xyc_reset(xycsc, 0, 1554 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1555 XY_ERR_FAIL, 1556 0) == XY_ERR_FAIL) 1557 return (XY_ERR_FAIL); /* flushes all but POLL 1558 * requests, resets */ 1559 continue; 1560 } 1561 1562 xyc_remove_iorq(xycsc); /* may resubmit request */ 1563 1564 if (iorq->iopb->done == 0) 1565 xyc_start(xycsc, iorq); 1566 } 1567 1568 /* get return value */ 1569 1570 retval = iorq->errno; 1571 1572 #ifdef XYC_DEBUG 1573 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1574 iorq->errno, xyc_e2str(iorq->errno)); 1575 #endif 1576 1577 /* start up any bufs that have queued */ 1578 1579 xyc_start(xycsc, NULL); 1580 1581 return (retval); 1582 } 1583 1584 /* 1585 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1586 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1587 */ 1588 void 1589 xyc_xyreset(xycsc, xysc) 1590 struct xyc_softc *xycsc; 1591 struct xy_softc *xysc; 1592 1593 { 1594 struct xy_iopb tmpiopb; 1595 u_long addr; 1596 int del; 1597 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1598 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1599 xycsc->ciopb->ien = 0; 1600 xycsc->ciopb->com = XYCMD_RST; 1601 xycsc->ciopb->unit = xysc->xy_drive; 1602 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1603 1604 XYC_GO(xycsc->xyc, addr); 1605 1606 del = XYC_RESETUSEC; 1607 while (del > 0) { 1608 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1609 DELAY(1); 1610 del--; 1611 } 1612 1613 if (del <= 0 || xycsc->ciopb->errs) { 1614 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1615 xyc_e2str(xycsc->ciopb->errno)); 1616 del = xycsc->xyc->xyc_rsetup; 1617 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1618 panic("xyc_reset"); 1619 } else { 1620 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1621 } 1622 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1623 } 1624 1625 1626 /* 1627 * xyc_reset: reset everything: requests are marked as errors except 1628 * a polled request (which is resubmitted) 1629 */ 1630 int 1631 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1632 struct xyc_softc *xycsc; 1633 int quiet, error; 1634 struct xy_iorq *blastmode; 1635 struct xy_softc *xysc; 1636 1637 { 1638 int del = 0, lcv, retval = XY_ERR_AOK; 1639 1640 /* soft reset hardware */ 1641 1642 if (!quiet) 1643 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1644 del = xycsc->xyc->xyc_rsetup; 1645 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1646 if (del == XY_ERR_FAIL) { 1647 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1648 retval = XY_ERR_FAIL; 1649 } 1650 if (xysc) 1651 xyc_xyreset(xycsc, xysc); 1652 1653 /* fix queues based on "blast-mode" */ 1654 1655 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1656 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1657 1658 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1659 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1660 XY_STATE(iorq->mode) != XY_SUB_NORM) 1661 /* is it active? */ 1662 continue; 1663 1664 if (blastmode == XY_RSET_ALL || 1665 blastmode != iorq) { 1666 /* failed */ 1667 iorq->errno = error; 1668 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1669 switch (XY_STATE(iorq->mode)) { 1670 case XY_SUB_NORM: 1671 iorq->buf->b_error = EIO; 1672 iorq->buf->b_flags |= B_ERROR; 1673 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1674 1675 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1676 (iorq->buf->b_flags & B_READ) 1677 ? BUS_DMASYNC_POSTREAD 1678 : BUS_DMASYNC_POSTWRITE); 1679 1680 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1681 1682 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1683 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1684 (xycsc->reqs[lcv].buf->b_bcount - 1685 xycsc->reqs[lcv].buf->b_resid)); 1686 biodone(iorq->buf); 1687 iorq->mode = XY_SUB_FREE; 1688 break; 1689 case XY_SUB_WAIT: 1690 wakeup(iorq); 1691 case XY_SUB_POLL: 1692 iorq->mode = 1693 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1694 break; 1695 } 1696 1697 } else { 1698 1699 /* resubmit, no need to do anything here */ 1700 } 1701 } 1702 1703 /* 1704 * now, if stuff is waiting, start it. 1705 * since we just reset it should go 1706 */ 1707 xyc_start(xycsc, NULL); 1708 1709 return (retval); 1710 } 1711 1712 /* 1713 * xyc_start: start waiting buffers 1714 */ 1715 1716 void 1717 xyc_start(xycsc, iorq) 1718 struct xyc_softc *xycsc; 1719 struct xy_iorq *iorq; 1720 1721 { 1722 int lcv; 1723 struct xy_softc *xy; 1724 1725 if (iorq == NULL) { 1726 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1727 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1728 if (xy->xyq.b_actf == NULL) continue; 1729 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1730 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1731 } 1732 } 1733 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1734 } 1735 1736 /* 1737 * xyc_remove_iorq: remove "done" IOPB's. 1738 */ 1739 1740 int 1741 xyc_remove_iorq(xycsc) 1742 struct xyc_softc *xycsc; 1743 1744 { 1745 int errno, rq, comm, errs; 1746 struct xyc *xyc = xycsc->xyc; 1747 u_long addr; 1748 struct xy_iopb *iopb; 1749 struct xy_iorq *iorq; 1750 struct buf *bp; 1751 1752 if (xyc->xyc_csr & XYC_DERR) { 1753 /* 1754 * DOUBLE ERROR: should never happen under normal use. This 1755 * error is so bad, you can't even tell which IOPB is bad, so 1756 * we dump them all. 1757 */ 1758 errno = XY_ERR_DERR; 1759 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1760 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1761 printf("%s: soft reset failed!\n", 1762 xycsc->sc_dev.dv_xname); 1763 panic("xyc_remove_iorq: controller DEAD"); 1764 } 1765 return (XY_ERR_AOK); 1766 } 1767 1768 /* 1769 * get iopb that is done, loop down the chain 1770 */ 1771 1772 if (xyc->xyc_csr & XYC_ERR) { 1773 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1774 } 1775 if (xyc->xyc_csr & XYC_IPND) { 1776 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1777 } 1778 1779 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1780 iorq = xycsc->xy_chain[rq]; 1781 if (iorq == NULL) break; /* done ! */ 1782 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1783 continue; /* free, or done */ 1784 iopb = iorq->iopb; 1785 if (iopb->done == 0) 1786 continue; /* not done yet */ 1787 1788 comm = iopb->com; 1789 errs = iopb->errs; 1790 1791 if (errs) 1792 iorq->errno = iopb->errno; 1793 else 1794 iorq->errno = 0; 1795 1796 /* handle non-fatal errors */ 1797 1798 if (errs && 1799 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1800 continue; /* AOK: we resubmitted it */ 1801 1802 1803 /* this iorq is now done (hasn't been restarted or anything) */ 1804 1805 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1806 xyc_perror(iorq, iopb, 0); 1807 1808 /* now, if read/write check to make sure we got all the data 1809 * we needed. (this may not be the case if we got an error in 1810 * the middle of a multisector request). */ 1811 1812 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1813 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1814 /* we just successfully processed a bad144 sector 1815 * note: if we are in bad 144 mode, the pointers have 1816 * been advanced already (see above) and are pointing 1817 * at the bad144 sector. to exit bad144 mode, we 1818 * must advance the pointers 1 sector and issue a new 1819 * request if there are still sectors left to process 1820 * 1821 */ 1822 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1823 1824 /* exit b144 mode */ 1825 iorq->mode = iorq->mode & (~XY_MODE_B144); 1826 1827 if (iorq->sectcnt) { /* more to go! */ 1828 iorq->lasterror = iorq->errno = iopb->errno = 0; 1829 iopb->errs = iopb->done = 0; 1830 iorq->tries = 0; 1831 iopb->scnt = iorq->sectcnt; 1832 iopb->cyl = iorq->blockno / 1833 iorq->xy->sectpercyl; 1834 iopb->head = 1835 (iorq->blockno / iorq->xy->nhead) % 1836 iorq->xy->nhead; 1837 iopb->sect = iorq->blockno % XYFM_BPS; 1838 addr = (u_long) iorq->dbuf; 1839 iopb->dataa = (addr & 0xffff); 1840 iopb->datar = ((addr & 0xff0000) >> 16); 1841 /* will resubit at end */ 1842 continue; 1843 } 1844 } 1845 /* final cleanup, totally done with this request */ 1846 1847 switch (XY_STATE(iorq->mode)) { 1848 case XY_SUB_NORM: 1849 bp = iorq->buf; 1850 if (errs) { 1851 bp->b_error = EIO; 1852 bp->b_flags |= B_ERROR; 1853 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1854 } else { 1855 bp->b_resid = 0; /* done */ 1856 } 1857 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 1858 (iorq->buf->b_flags & B_READ) 1859 ? BUS_DMASYNC_POSTREAD 1860 : BUS_DMASYNC_POSTWRITE); 1861 1862 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1863 1864 iorq->xy->xyq.b_actf = bp->b_actf; 1865 disk_unbusy(&iorq->xy->sc_dk, 1866 (bp->b_bcount - bp->b_resid)); 1867 iorq->mode = XY_SUB_FREE; 1868 biodone(bp); 1869 break; 1870 case XY_SUB_WAIT: 1871 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1872 wakeup(iorq); 1873 break; 1874 case XY_SUB_POLL: 1875 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1876 break; 1877 } 1878 } 1879 1880 return (XY_ERR_AOK); 1881 } 1882 1883 /* 1884 * xyc_perror: print error. 1885 * - if still_trying is true: we got an error, retried and got a 1886 * different error. in that case lasterror is the old error, 1887 * and errno is the new one. 1888 * - if still_trying is not true, then if we ever had an error it 1889 * is in lasterror. also, if iorq->errno == 0, then we recovered 1890 * from that error (otherwise iorq->errno == iorq->lasterror). 1891 */ 1892 void 1893 xyc_perror(iorq, iopb, still_trying) 1894 struct xy_iorq *iorq; 1895 struct xy_iopb *iopb; 1896 int still_trying; 1897 1898 { 1899 1900 int error = iorq->lasterror; 1901 1902 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1903 : iorq->xyc->sc_dev.dv_xname); 1904 if (iorq->buf) 1905 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1906 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1907 printf("%s %d/%d/%d: ", 1908 (iopb->com == XYCMD_RD) ? "read" : "write", 1909 iopb->cyl, iopb->head, iopb->sect); 1910 printf("%s", xyc_e2str(error)); 1911 1912 if (still_trying) 1913 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1914 else 1915 if (iorq->errno == 0) 1916 printf(" [recovered in %d tries]", iorq->tries); 1917 1918 printf("\n"); 1919 } 1920 1921 /* 1922 * xyc_error: non-fatal error encountered... recover. 1923 * return AOK if resubmitted, return FAIL if this iopb is done 1924 */ 1925 int 1926 xyc_error(xycsc, iorq, iopb, comm) 1927 struct xyc_softc *xycsc; 1928 struct xy_iorq *iorq; 1929 struct xy_iopb *iopb; 1930 int comm; 1931 1932 { 1933 int errno = iorq->errno; 1934 int erract = xyc_entoact(errno); 1935 int oldmode, advance, i; 1936 1937 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1938 oldmode = iorq->mode; 1939 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1940 /* make xyc_start ignore us */ 1941 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1942 iorq->mode = oldmode; 1943 } 1944 /* check for read/write to a sector in bad144 table if bad: redirect 1945 * request to bad144 area */ 1946 1947 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1948 (iorq->mode & XY_MODE_B144) == 0) { 1949 advance = iorq->sectcnt - iopb->scnt; 1950 XYC_ADVANCE(iorq, advance); 1951 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1952 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1953 iorq->blockno % iorq->xy->nsect)) != -1) { 1954 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1955 * redirect */ 1956 iopb->errno = iopb->done = iopb->errs = 0; 1957 iopb->scnt = 1; 1958 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1959 /* second to last acyl */ 1960 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1961 * standard */ 1962 iopb->head = i / iorq->xy->nhead; 1963 iopb->sect = i % iorq->xy->nhead; 1964 /* will resubmit when we come out of remove_iorq */ 1965 return (XY_ERR_AOK); /* recovered! */ 1966 } 1967 } 1968 1969 /* 1970 * it isn't a bad144 sector, must be real error! see if we can retry 1971 * it? 1972 */ 1973 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1974 xyc_perror(iorq, iopb, 1); /* inform of error state 1975 * change */ 1976 iorq->lasterror = errno; 1977 1978 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1979 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1980 iorq->tries++; 1981 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1982 /* will resubmit at end of remove_iorq */ 1983 return (XY_ERR_AOK); /* recovered! */ 1984 } 1985 1986 /* failed to recover from this error */ 1987 return (XY_ERR_FAIL); 1988 } 1989 1990 /* 1991 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1992 */ 1993 void 1994 xyc_tick(arg) 1995 void *arg; 1996 1997 { 1998 struct xyc_softc *xycsc = arg; 1999 int lcv, s, reset = 0; 2000 2001 /* reduce ttl for each request if one goes to zero, reset xyc */ 2002 s = splbio(); 2003 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2004 if (xycsc->reqs[lcv].mode == 0 || 2005 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2006 continue; 2007 xycsc->reqs[lcv].ttl--; 2008 if (xycsc->reqs[lcv].ttl == 0) 2009 reset = 1; 2010 } 2011 if (reset) { 2012 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2013 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2014 } 2015 splx(s); 2016 2017 /* until next time */ 2018 2019 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2020 } 2021 2022 /* 2023 * xyc_ioctlcmd: this function provides a user level interface to the 2024 * controller via ioctl. this allows "format" programs to be written 2025 * in user code, and is also useful for some debugging. we return 2026 * an error code. called at user priority. 2027 * 2028 * XXX missing a few commands (see the 7053 driver for ideas) 2029 */ 2030 int 2031 xyc_ioctlcmd(xy, dev, xio) 2032 struct xy_softc *xy; 2033 dev_t dev; 2034 struct xd_iocmd *xio; 2035 2036 { 2037 int s, rqno, dummy = 0; 2038 caddr_t dvmabuf = NULL, buf = NULL; 2039 struct xyc_softc *xycsc; 2040 int rseg, error; 2041 bus_dma_segment_t seg; 2042 2043 /* check sanity of requested command */ 2044 2045 switch (xio->cmd) { 2046 2047 case XYCMD_NOP: /* no op: everything should be zero */ 2048 if (xio->subfn || xio->dptr || xio->dlen || 2049 xio->block || xio->sectcnt) 2050 return (EINVAL); 2051 break; 2052 2053 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2054 case XYCMD_WR: 2055 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2056 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2057 return (EINVAL); 2058 break; 2059 2060 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2061 return (EINVAL); 2062 2063 break; 2064 2065 default: 2066 return (EINVAL);/* ??? */ 2067 } 2068 2069 xycsc = xy->parent; 2070 2071 /* create DVMA buffer for request if needed */ 2072 if (xio->dlen) { 2073 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2074 &seg, 1, &rseg, BUS_DMA_WAITOK); 2075 if (error) { 2076 return (error); 2077 } 2078 dvmabuf = (caddr_t)seg.ds_addr; 2079 2080 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2081 &buf, 2082 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2083 if (error) { 2084 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2085 return (error); 2086 } 2087 if (xio->cmd == XYCMD_WR) { 2088 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2089 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2090 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2091 return (error); 2092 } 2093 } 2094 } 2095 /* do it! */ 2096 2097 error = 0; 2098 s = splbio(); 2099 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2100 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2101 if (rqno == XY_ERR_FAIL) { 2102 error = EIO; 2103 goto done; 2104 } 2105 xio->errno = xycsc->ciorq->errno; 2106 xio->tries = xycsc->ciorq->tries; 2107 XYC_DONE(xycsc, dummy); 2108 2109 if (xio->cmd == XYCMD_RD) 2110 error = copyout(buf, xio->dptr, xio->dlen); 2111 2112 done: 2113 splx(s); 2114 if (dvmabuf) { 2115 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2116 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2117 } 2118 return (error); 2119 } 2120 2121 /* 2122 * xyc_e2str: convert error code number into an error string 2123 */ 2124 char * 2125 xyc_e2str(no) 2126 int no; 2127 { 2128 switch (no) { 2129 case XY_ERR_FAIL: 2130 return ("Software fatal error"); 2131 case XY_ERR_DERR: 2132 return ("DOUBLE ERROR"); 2133 case XY_ERR_AOK: 2134 return ("Successful completion"); 2135 case XY_ERR_IPEN: 2136 return("Interrupt pending"); 2137 case XY_ERR_BCFL: 2138 return("Busy conflict"); 2139 case XY_ERR_TIMO: 2140 return("Operation timeout"); 2141 case XY_ERR_NHDR: 2142 return("Header not found"); 2143 case XY_ERR_HARD: 2144 return("Hard ECC error"); 2145 case XY_ERR_ICYL: 2146 return("Illegal cylinder address"); 2147 case XY_ERR_ISEC: 2148 return("Illegal sector address"); 2149 case XY_ERR_SMAL: 2150 return("Last sector too small"); 2151 case XY_ERR_SACK: 2152 return("Slave ACK error (non-existent memory)"); 2153 case XY_ERR_CHER: 2154 return("Cylinder and head/header error"); 2155 case XY_ERR_SRTR: 2156 return("Auto-seek retry successful"); 2157 case XY_ERR_WPRO: 2158 return("Write-protect error"); 2159 case XY_ERR_UIMP: 2160 return("Unimplemented command"); 2161 case XY_ERR_DNRY: 2162 return("Drive not ready"); 2163 case XY_ERR_SZER: 2164 return("Sector count zero"); 2165 case XY_ERR_DFLT: 2166 return("Drive faulted"); 2167 case XY_ERR_ISSZ: 2168 return("Illegal sector size"); 2169 case XY_ERR_SLTA: 2170 return("Self test A"); 2171 case XY_ERR_SLTB: 2172 return("Self test B"); 2173 case XY_ERR_SLTC: 2174 return("Self test C"); 2175 case XY_ERR_SOFT: 2176 return("Soft ECC error"); 2177 case XY_ERR_SFOK: 2178 return("Soft ECC error recovered"); 2179 case XY_ERR_IHED: 2180 return("Illegal head"); 2181 case XY_ERR_DSEQ: 2182 return("Disk sequencer error"); 2183 case XY_ERR_SEEK: 2184 return("Seek error"); 2185 default: 2186 return ("Unknown error"); 2187 } 2188 } 2189 2190 int 2191 xyc_entoact(errno) 2192 2193 int errno; 2194 2195 { 2196 switch (errno) { 2197 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2198 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2199 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2200 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2201 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2202 2203 return(XY_ERA_PROG); /* program error ! */ 2204 2205 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2206 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2207 case XY_ERR_SOFT: 2208 2209 return(XY_ERA_HARD); /* hard error, retry */ 2210 2211 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2212 2213 return(XY_ERA_RSET); /* hard error reset */ 2214 2215 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2216 2217 return(XY_ERA_SOFT); /* an FYI error */ 2218 2219 case XY_ERR_WPRO: 2220 2221 return(XY_ERA_WPRO); /* write protect */ 2222 } 2223 2224 return(XY_ERA_PROG); /* ??? */ 2225 } 2226
Indexes created Tue Sep 30 11:09:46 GMT 2025