xy.c revision 1.8
1 /* $NetBSD: xy.c,v 1.8 1998/02/06 00:22:45 pk Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #undef XYC_DEBUG /* full debug */ 54 #undef XYC_DIAG /* extra sanity checks */ 55 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 56 #define XYC_DIAG /* link in with master DIAG option */ 57 #endif 58 59 #include <sys/param.h> 60 #include <sys/proc.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/file.h> 64 #include <sys/stat.h> 65 #include <sys/ioctl.h> 66 #include <sys/buf.h> 67 #include <sys/uio.h> 68 #include <sys/malloc.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/syslog.h> 73 #include <sys/dkbad.h> 74 #include <sys/conf.h> 75 76 #include <vm/vm.h> 77 #include <vm/vm_kern.h> 78 79 #include <machine/bus.h> 80 #include <machine/autoconf.h> 81 #include <machine/sun_disklabel.h> 82 #include <machine/conf.h> 83 84 #include <dev/vme/vmevar.h> 85 #include <dev/vme/xyreg.h> 86 #include <dev/vme/xyvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 97 */ 98 #define XYC_GO(XYC, ADDR) { \ 99 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 100 (ADDR) = ((ADDR) >> 8); \ 101 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 102 (ADDR) = ((ADDR) >> 8); \ 103 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 104 (ADDR) = ((ADDR) >> 8); \ 105 (XYC)->xyc_reloc_hi = (ADDR); \ 106 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 107 } 108 109 /* 110 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 111 */ 112 113 #define XYC_DONE(SC,ER) { \ 114 if ((ER) == XY_ERR_AOK) { \ 115 (ER) = (SC)->ciorq->errno; \ 116 (SC)->ciorq->mode = XY_SUB_FREE; \ 117 wakeup((SC)->ciorq); \ 118 } \ 119 } 120 121 /* 122 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 123 */ 124 125 #define XYC_ADVANCE(IORQ, N) { \ 126 if (N) { \ 127 (IORQ)->sectcnt -= (N); \ 128 (IORQ)->blockno += (N); \ 129 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 130 } \ 131 } 132 133 /* 134 * note - addresses you can sleep on: 135 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 136 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 137 */ 138 139 140 /* 141 * function prototypes 142 * "xyc_*" functions are internal, all others are external interfaces 143 */ 144 145 extern int pil_to_vme[]; /* from obio.c */ 146 147 /* internals */ 148 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 149 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 150 char *xyc_e2str __P((int)); 151 int xyc_entoact __P((int)); 152 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 153 struct xy_iopb *, int)); 154 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 155 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 156 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 157 int xyc_remove_iorq __P((struct xyc_softc *)); 158 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 159 struct xy_softc *)); 160 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 161 struct xy_softc *, int, u_long, int, 162 caddr_t, struct buf *)); 163 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 164 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 165 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 166 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 167 void xyc_tick __P((void *)); 168 int xyc_unbusy __P((struct xyc *, int)); 169 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 170 171 /* machine interrupt hook */ 172 int xycintr __P((void *)); 173 174 /* autoconf */ 175 int xycmatch __P((struct device *, struct cfdata *, void *)); 176 void xycattach __P((struct device *, struct device *, void *)); 177 int xymatch __P((struct device *, struct cfdata *, void *)); 178 void xyattach __P((struct device *, struct device *, void *)); 179 static int xyc_probe __P((void *, void *)); 180 181 static void xydummystrat __P((struct buf *)); 182 int xygetdisklabel __P((struct xy_softc *, void *)); 183 184 /* 185 * cfattach's: device driver interface to autoconfig 186 */ 187 188 struct cfattach xyc_ca = { 189 sizeof(struct xyc_softc), xycmatch, xycattach 190 }; 191 192 struct cfattach xy_ca = { 193 sizeof(struct xy_softc), xymatch, xyattach 194 }; 195 196 extern struct cfdriver xy_cd; 197 198 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 199 int driveno; /* unit number */ 200 int fullmode; /* submit mode */ 201 int booting; /* are we booting or not? */ 202 }; 203 204 /* 205 * dkdriver 206 */ 207 208 struct dkdriver xydkdriver = { xystrategy }; 209 210 /* 211 * start: disk label fix code (XXX) 212 */ 213 214 static void *xy_labeldata; 215 216 static void 217 xydummystrat(bp) 218 struct buf *bp; 219 { 220 if (bp->b_bcount != XYFM_BPS) 221 panic("xydummystrat"); 222 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 223 bp->b_flags |= B_DONE; 224 bp->b_flags &= ~B_BUSY; 225 } 226 227 int 228 xygetdisklabel(xy, b) 229 struct xy_softc *xy; 230 void *b; 231 { 232 char *err; 233 struct sun_disklabel *sdl; 234 235 /* We already have the label data in `b'; setup for dummy strategy */ 236 xy_labeldata = b; 237 238 /* Required parameter for readdisklabel() */ 239 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 240 241 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 242 xydummystrat, 243 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 244 if (err) { 245 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 246 return(XY_ERR_FAIL); 247 } 248 249 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 250 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 251 if (sdl->sl_magic == SUN_DKMAGIC) 252 xy->pcyl = sdl->sl_pcylinders; 253 else { 254 printf("%s: WARNING: no `pcyl' in disk label.\n", 255 xy->sc_dev.dv_xname); 256 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 257 xy->sc_dk.dk_label->d_acylinders; 258 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 259 xy->sc_dev.dv_xname, xy->pcyl); 260 } 261 262 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 263 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 264 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 265 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 266 xy->sectpercyl = xy->nhead * xy->nsect; 267 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 268 * sun->bsd */ 269 return(XY_ERR_AOK); 270 } 271 272 /* 273 * end: disk label fix code (XXX) 274 */ 275 276 /* 277 * a u t o c o n f i g f u n c t i o n s 278 */ 279 280 /* 281 * xycmatch: determine if xyc is present or not. we do a 282 * soft reset to detect the xyc. 283 */ 284 int 285 xyc_probe(vaddr, arg) 286 void *vaddr; 287 void *arg; 288 { 289 struct xyc *xyc = vaddr; 290 291 return (xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL); 292 } 293 294 int xycmatch(parent, cf, aux) 295 struct device *parent; 296 struct cfdata *cf; 297 void *aux; 298 { 299 struct vme_attach_args *va = aux; 300 vme_chipset_tag_t ct = va->vma_chipset_tag; 301 bus_space_tag_t bt = va->vma_bustag; 302 vme_mod_t mod; 303 304 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 305 306 return (vme_bus_probe(ct, bt, va->vma_reg[0], 307 offsetof(struct xyc, xyc_rsetup), 1, 308 mod, xyc_probe, 0)); 309 } 310 311 /* 312 * xycattach: attach controller 313 */ 314 void 315 xycattach(parent, self, aux) 316 struct device *parent, *self; 317 void *aux; 318 319 { 320 struct vme_attach_args *va = aux; 321 vme_chipset_tag_t ct = va->vma_chipset_tag; 322 bus_space_tag_t bt = va->vma_bustag; 323 bus_space_handle_t bh; 324 vme_intr_handle_t ih; 325 vme_mod_t mod; 326 struct xyc_softc *xyc = (void *) self; 327 struct xyc_attach_args xa; 328 int lcv, res, pbsz, error; 329 bus_dma_segment_t seg; 330 int rseg; 331 332 /* get addressing and intr level stuff from autoconfig and load it 333 * into our xyc_softc. */ 334 335 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 336 337 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 338 mod, bt, &bh) != 0) 339 panic("xyc: vme_map"); 340 341 xyc->xyc = (struct xyc *) bh; 342 xyc->ipl = va->vma_pri; 343 xyc->vector = va->vma_vec; 344 xyc->no_ols = 0; /* XXX should be from config */ 345 346 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 347 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 348 349 /* 350 * allocate and zero buffers 351 * check boundaries of the KVA's ... all IOPBs must reside in 352 * the same 64K region. 353 */ 354 355 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 356 357 error = bus_dmamem_alloc( 358 xyc->dmatag, 359 pbsz, /* size */ 360 64*1024, /* boundary */ 361 0, /* alignment */ 362 &seg, 363 1, /* # of segments */ 364 &rseg, /* actual # of segments */ 365 BUS_DMA_NOWAIT); 366 if (error) { 367 printf("%s: DMA buffer map error %d\n", 368 xyc->sc_dev.dv_xname, error); 369 return; 370 } 371 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 372 373 error = bus_dmamem_map( 374 xyc->dmatag, 375 &seg, 376 rseg, 377 XYC_MAXIOPB * sizeof(struct xy_iopb), 378 (caddr_t *)&xyc->iopbase, 379 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 380 if (error) { 381 bus_dmamem_free(xyc->dmatag, &seg, rseg); 382 printf("%s: DMA buffer map error %d\n", 383 xyc->sc_dev.dv_xname, error); 384 return; 385 } 386 bzero(xyc->iopbase, pbsz); 387 388 xyc->reqs = (struct xy_iorq *) 389 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 390 if (xyc->reqs == NULL) 391 panic("xyc malloc"); 392 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 393 394 /* 395 * init iorq to iopb pointers, and non-zero fields in the 396 * iopb which never change. 397 */ 398 399 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 400 xyc->xy_chain[lcv] = NULL; 401 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 402 xyc->iopbase[lcv].asr = 1; /* always the same */ 403 xyc->iopbase[lcv].eef = 1; /* always the same */ 404 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 405 xyc->iopbase[lcv].aud = 1; /* always the same */ 406 xyc->iopbase[lcv].relo = 1; /* always the same */ 407 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 408 409 error = bus_dmamap_create( 410 xyc->dmatag, 411 MAXPHYS, /* size */ 412 1, /* nsegments */ 413 MAXPHYS, /* maxsegsz */ 414 0, /* boundary */ 415 BUS_DMA_NOWAIT, 416 &xyc->reqs[lcv].dmamap); 417 if (error) { 418 printf("%s: DMA buffer map create error %d\n", 419 xyc->sc_dev.dv_xname, error); 420 return; 421 } 422 } 423 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 424 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 425 xyc->xy_hand = 0; 426 427 /* read controller parameters and insure we have a 450/451 */ 428 429 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 430 res = xyc->ciopb->ctyp; 431 XYC_DONE(xyc, error); 432 if (res != XYCT_450) { 433 if (error) 434 printf(": %s: ", xyc_e2str(error)); 435 printf(": doesn't identify as a 450/451\n"); 436 return; 437 } 438 printf(": Xylogics 450/451"); 439 if (xyc->no_ols) 440 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 441 printf("\n"); 442 if (error) { 443 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 444 xyc_e2str(error)); 445 return; 446 } 447 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 448 printf("%s: 24 bit addressing turned off\n", 449 xyc->sc_dev.dv_xname); 450 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 451 printf("to enable 24 bit mode and this driver\n"); 452 return; 453 } 454 455 /* link in interrupt with higher level software */ 456 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 457 vme_intr_establish(ct, ih, xycintr, xyc); 458 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 459 vme_bus_establish(ct, &xyc->sc_dev); 460 461 462 /* now we must look for disks using autoconfig */ 463 xa.fullmode = XY_SUB_POLL; 464 xa.booting = 1; 465 466 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 467 (void) config_found(self, (void *) &xa, NULL); 468 469 /* start the watchdog clock */ 470 timeout(xyc_tick, xyc, XYC_TICKCNT); 471 472 } 473 474 /* 475 * xymatch: probe for disk. 476 * 477 * note: we almost always say disk is present. this allows us to 478 * spin up and configure a disk after the system is booted (we can 479 * call xyattach!). 480 */ 481 int 482 xymatch(parent, cf, aux) 483 struct device *parent; 484 struct cfdata *cf; 485 void *aux; 486 { 487 struct xyc_attach_args *xa = aux; 488 489 /* looking for autoconf wildcard or exact match */ 490 491 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 492 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 493 return 0; 494 495 return 1; 496 497 } 498 499 /* 500 * xyattach: attach a disk. this can be called from autoconf and also 501 * from xyopen/xystrategy. 502 */ 503 void 504 xyattach(parent, self, aux) 505 struct device *parent, *self; 506 void *aux; 507 508 { 509 struct xy_softc *xy = (void *) self, *oxy; 510 struct xyc_softc *xyc = (void *) parent; 511 struct xyc_attach_args *xa = aux; 512 int spt, mb, blk, lcv, fmode, s = 0, newstate; 513 struct dkbad *dkb; 514 int rseg, error; 515 bus_dma_segment_t seg; 516 caddr_t dmaddr; 517 caddr_t buf; 518 519 /* 520 * Always re-initialize the disk structure. We want statistics 521 * to start with a clean slate. 522 */ 523 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 524 xy->sc_dk.dk_driver = &xydkdriver; 525 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 526 527 /* if booting, init the xy_softc */ 528 529 if (xa->booting) { 530 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 531 xy->flags = 0; 532 xy->parent = xyc; 533 534 /* init queue of waiting bufs */ 535 536 xy->xyq.b_active = 0; 537 xy->xyq.b_actf = 0; 538 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 539 540 xy->xyrq = &xyc->reqs[xa->driveno]; 541 542 } 543 xy->xy_drive = xa->driveno; 544 fmode = xa->fullmode; 545 xyc->sc_drives[xa->driveno] = xy; 546 547 /* if not booting, make sure we are the only process in the attach for 548 * this drive. if locked out, sleep on it. */ 549 550 if (!xa->booting) { 551 s = splbio(); 552 while (xy->state == XY_DRIVE_ATTACHING) { 553 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 554 splx(s); 555 return; 556 } 557 } 558 printf("%s at %s", 559 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 560 } 561 562 /* we now have control */ 563 xy->state = XY_DRIVE_ATTACHING; 564 newstate = XY_DRIVE_UNKNOWN; 565 566 buf = NULL; 567 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 568 &seg, 1, &rseg, BUS_DMA_NOWAIT); 569 if (error) { 570 printf("%s: DMA buffer alloc error %d\n", 571 xy->sc_dev.dv_xname, error); 572 goto done; 573 } 574 dmaddr = (caddr_t)seg.ds_addr; 575 576 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 577 &buf, 578 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 579 if (error) { 580 printf("%s: DMA buffer alloc error %d\n", 581 xy->sc_dev.dv_xname, error); 582 bus_dmamem_free(xyc->dmatag, &seg, rseg); 583 goto done; 584 } 585 586 587 /* first try and reset the drive */ 588 589 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 590 XYC_DONE(xyc, error); 591 if (error == XY_ERR_DNRY) { 592 printf(" drive %d: off-line\n", xa->driveno); 593 goto done; 594 } 595 if (error) { 596 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 597 goto done; 598 } 599 printf(" drive %d: ready", xa->driveno); 600 601 /* 602 * now set drive parameters (to semi-bogus values) so we can read the 603 * disk label. 604 */ 605 xy->pcyl = xy->ncyl = 1; 606 xy->acyl = 0; 607 xy->nhead = 1; 608 xy->nsect = 1; 609 xy->sectpercyl = 1; 610 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 611 xy->dkb.bt_bad[lcv].bt_cyl = 612 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 613 614 /* read disk label */ 615 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 616 xy->drive_type++) { 617 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 618 dmaddr, fmode); 619 XYC_DONE(xyc, error); 620 if (error == XY_ERR_AOK) break; 621 } 622 623 if (error != XY_ERR_AOK) { 624 printf("\n%s: reading disk label failed: %s\n", 625 xy->sc_dev.dv_xname, xyc_e2str(error)); 626 goto done; 627 } 628 printf(" (drive type %d)\n", xy->drive_type); 629 630 newstate = XY_DRIVE_NOLABEL; 631 632 xy->hw_spt = spt = 0; /* XXX needed ? */ 633 /* Attach the disk: must be before getdisklabel to malloc label */ 634 disk_attach(&xy->sc_dk); 635 636 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 637 goto done; 638 639 /* inform the user of what is up */ 640 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 641 buf, xy->pcyl); 642 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 643 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 644 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 645 XYFM_BPS); 646 647 /* 648 * 450/451 stupidity: the drive type is encoded into the format 649 * of the disk. the drive type in the IOPB must match the drive 650 * type in the format, or you will not be able to do I/O to the 651 * disk (you get header not found errors). if you have two drives 652 * of different sizes that have the same drive type in their 653 * formatting then you are out of luck. 654 * 655 * this problem was corrected in the 753/7053. 656 */ 657 658 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 659 oxy = xyc->sc_drives[lcv]; 660 if (oxy == NULL || oxy == xy) continue; 661 if (oxy->drive_type != xy->drive_type) continue; 662 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 663 xy->nhead != oxy->nhead) { 664 printf("%s: %s and %s must be the same size!\n", 665 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 666 oxy->sc_dev.dv_xname); 667 panic("xy drive size mismatch"); 668 } 669 } 670 671 672 /* now set the real drive parameters! */ 673 674 blk = (xy->nsect - 1) + 675 ((xy->nhead - 1) * xy->nsect) + 676 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 677 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 678 XYC_DONE(xyc, error); 679 if (error) { 680 printf("%s: write drive size failed: %s\n", 681 xy->sc_dev.dv_xname, xyc_e2str(error)); 682 goto done; 683 } 684 newstate = XY_DRIVE_ONLINE; 685 686 /* 687 * read bad144 table. this table resides on the first sector of the 688 * last track of the disk (i.e. second cyl of "acyl" area). 689 */ 690 691 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 692 /* last cyl */ 693 (xy->nhead - 1) * xy->nsect; /* last head */ 694 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 695 dmaddr, fmode); 696 XYC_DONE(xyc, error); 697 if (error) { 698 printf("%s: reading bad144 failed: %s\n", 699 xy->sc_dev.dv_xname, xyc_e2str(error)); 700 goto done; 701 } 702 703 /* check dkbad for sanity */ 704 dkb = (struct dkbad *) buf; 705 for (lcv = 0; lcv < 126; lcv++) { 706 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 707 dkb->bt_bad[lcv].bt_cyl == 0) && 708 dkb->bt_bad[lcv].bt_trksec == 0xffff) 709 continue; /* blank */ 710 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 711 break; 712 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 713 break; 714 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 715 break; 716 } 717 if (lcv != 126) { 718 printf("%s: warning: invalid bad144 sector!\n", 719 xy->sc_dev.dv_xname); 720 } else { 721 bcopy(buf, &xy->dkb, XYFM_BPS); 722 } 723 724 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 725 726 done: 727 if (buf != NULL) { 728 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 729 bus_dmamem_free(xyc->dmatag, &seg, rseg); 730 } 731 732 xy->state = newstate; 733 if (!xa->booting) { 734 wakeup(&xy->state); 735 splx(s); 736 } 737 } 738 739 /* 740 * end of autoconfig functions 741 */ 742 743 /* 744 * { b , c } d e v s w f u n c t i o n s 745 */ 746 747 /* 748 * xyclose: close device 749 */ 750 int 751 xyclose(dev, flag, fmt, p) 752 dev_t dev; 753 int flag, fmt; 754 struct proc *p; 755 756 { 757 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 758 int part = DISKPART(dev); 759 760 /* clear mask bits */ 761 762 switch (fmt) { 763 case S_IFCHR: 764 xy->sc_dk.dk_copenmask &= ~(1 << part); 765 break; 766 case S_IFBLK: 767 xy->sc_dk.dk_bopenmask &= ~(1 << part); 768 break; 769 } 770 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 771 772 return 0; 773 } 774 775 /* 776 * xydump: crash dump system 777 */ 778 int 779 xydump(dev, blkno, va, size) 780 dev_t dev; 781 daddr_t blkno; 782 caddr_t va; 783 size_t size; 784 { 785 int unit, part; 786 struct xy_softc *xy; 787 788 unit = DISKUNIT(dev); 789 if (unit >= xy_cd.cd_ndevs) 790 return ENXIO; 791 part = DISKPART(dev); 792 793 xy = xy_cd.cd_devs[unit]; 794 795 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 796 'a' + part); 797 798 return ENXIO; 799 800 /* outline: globals: "dumplo" == sector number of partition to start 801 * dump at (convert to physical sector with partition table) 802 * "dumpsize" == size of dump in clicks "physmem" == size of physical 803 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 804 * physmem) 805 * 806 * dump a copy of physical memory to the dump device starting at sector 807 * "dumplo" in the swap partition (make sure > 0). map in pages as 808 * we go. use polled I/O. 809 * 810 * XXX how to handle NON_CONTIG? */ 811 812 } 813 814 /* 815 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 816 */ 817 int 818 xyioctl(dev, command, addr, flag, p) 819 dev_t dev; 820 u_long command; 821 caddr_t addr; 822 int flag; 823 struct proc *p; 824 825 { 826 struct xy_softc *xy; 827 struct xd_iocmd *xio; 828 int error, s, unit; 829 830 unit = DISKUNIT(dev); 831 832 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 833 return (ENXIO); 834 835 /* switch on ioctl type */ 836 837 switch (command) { 838 case DIOCSBAD: /* set bad144 info */ 839 if ((flag & FWRITE) == 0) 840 return EBADF; 841 s = splbio(); 842 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 843 splx(s); 844 return 0; 845 846 case DIOCGDINFO: /* get disk label */ 847 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 848 return 0; 849 850 case DIOCGPART: /* get partition info */ 851 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 852 ((struct partinfo *) addr)->part = 853 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 854 return 0; 855 856 case DIOCSDINFO: /* set disk label */ 857 if ((flag & FWRITE) == 0) 858 return EBADF; 859 error = setdisklabel(xy->sc_dk.dk_label, 860 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 861 xy->sc_dk.dk_cpulabel); 862 if (error == 0) { 863 if (xy->state == XY_DRIVE_NOLABEL) 864 xy->state = XY_DRIVE_ONLINE; 865 } 866 return error; 867 868 case DIOCWLABEL: /* change write status of disk label */ 869 if ((flag & FWRITE) == 0) 870 return EBADF; 871 if (*(int *) addr) 872 xy->flags |= XY_WLABEL; 873 else 874 xy->flags &= ~XY_WLABEL; 875 return 0; 876 877 case DIOCWDINFO: /* write disk label */ 878 if ((flag & FWRITE) == 0) 879 return EBADF; 880 error = setdisklabel(xy->sc_dk.dk_label, 881 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 882 xy->sc_dk.dk_cpulabel); 883 if (error == 0) { 884 if (xy->state == XY_DRIVE_NOLABEL) 885 xy->state = XY_DRIVE_ONLINE; 886 887 /* Simulate opening partition 0 so write succeeds. */ 888 xy->sc_dk.dk_openmask |= (1 << 0); 889 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 890 xystrategy, xy->sc_dk.dk_label, 891 xy->sc_dk.dk_cpulabel); 892 xy->sc_dk.dk_openmask = 893 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 894 } 895 return error; 896 897 case DIOSXDCMD: 898 xio = (struct xd_iocmd *) addr; 899 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 900 return (error); 901 return (xyc_ioctlcmd(xy, dev, xio)); 902 903 default: 904 return ENOTTY; 905 } 906 } 907 908 /* 909 * xyopen: open drive 910 */ 911 912 int 913 xyopen(dev, flag, fmt, p) 914 dev_t dev; 915 int flag, fmt; 916 struct proc *p; 917 { 918 int unit, part; 919 struct xy_softc *xy; 920 struct xyc_attach_args xa; 921 922 /* first, could it be a valid target? */ 923 924 unit = DISKUNIT(dev); 925 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 926 return (ENXIO); 927 part = DISKPART(dev); 928 929 /* do we need to attach the drive? */ 930 931 if (xy->state == XY_DRIVE_UNKNOWN) { 932 xa.driveno = xy->xy_drive; 933 xa.fullmode = XY_SUB_WAIT; 934 xa.booting = 0; 935 xyattach((struct device *) xy->parent, 936 (struct device *) xy, &xa); 937 if (xy->state == XY_DRIVE_UNKNOWN) { 938 return (EIO); 939 } 940 } 941 /* check for partition */ 942 943 if (part != RAW_PART && 944 (part >= xy->sc_dk.dk_label->d_npartitions || 945 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 946 return (ENXIO); 947 } 948 /* set open masks */ 949 950 switch (fmt) { 951 case S_IFCHR: 952 xy->sc_dk.dk_copenmask |= (1 << part); 953 break; 954 case S_IFBLK: 955 xy->sc_dk.dk_bopenmask |= (1 << part); 956 break; 957 } 958 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 959 960 return 0; 961 } 962 963 int 964 xyread(dev, uio, flags) 965 dev_t dev; 966 struct uio *uio; 967 int flags; 968 { 969 970 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 971 } 972 973 int 974 xywrite(dev, uio, flags) 975 dev_t dev; 976 struct uio *uio; 977 int flags; 978 { 979 980 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 981 } 982 983 984 /* 985 * xysize: return size of a partition for a dump 986 */ 987 988 int 989 xysize(dev) 990 dev_t dev; 991 992 { 993 struct xy_softc *xysc; 994 int unit, part, size, omask; 995 996 /* valid unit? */ 997 unit = DISKUNIT(dev); 998 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 999 return (-1); 1000 1001 part = DISKPART(dev); 1002 omask = xysc->sc_dk.dk_openmask & (1 << part); 1003 1004 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1005 return (-1); 1006 1007 /* do it */ 1008 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1009 size = -1; /* only give valid size for swap partitions */ 1010 else 1011 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1012 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1013 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1014 return (-1); 1015 return (size); 1016 } 1017 1018 /* 1019 * xystrategy: buffering system interface to xy. 1020 */ 1021 1022 void 1023 xystrategy(bp) 1024 struct buf *bp; 1025 1026 { 1027 struct xy_softc *xy; 1028 int s, unit; 1029 struct xyc_attach_args xa; 1030 1031 unit = DISKUNIT(bp->b_dev); 1032 1033 /* check for live device */ 1034 1035 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1036 bp->b_blkno < 0 || 1037 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1038 bp->b_error = EINVAL; 1039 goto bad; 1040 } 1041 /* do we need to attach the drive? */ 1042 1043 if (xy->state == XY_DRIVE_UNKNOWN) { 1044 xa.driveno = xy->xy_drive; 1045 xa.fullmode = XY_SUB_WAIT; 1046 xa.booting = 0; 1047 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1048 if (xy->state == XY_DRIVE_UNKNOWN) { 1049 bp->b_error = EIO; 1050 goto bad; 1051 } 1052 } 1053 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1054 /* no I/O to unlabeled disks, unless raw partition */ 1055 bp->b_error = EIO; 1056 goto bad; 1057 } 1058 /* short circuit zero length request */ 1059 1060 if (bp->b_bcount == 0) 1061 goto done; 1062 1063 /* check bounds with label (disksubr.c). Determine the size of the 1064 * transfer, and make sure it is within the boundaries of the 1065 * partition. Adjust transfer if needed, and signal errors or early 1066 * completion. */ 1067 1068 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1069 (xy->flags & XY_WLABEL) != 0) <= 0) 1070 goto done; 1071 1072 /* 1073 * now we know we have a valid buf structure that we need to do I/O 1074 * on. 1075 */ 1076 s = splbio(); /* protect the queues */ 1077 1078 disksort(&xy->xyq, bp); 1079 1080 /* start 'em up */ 1081 1082 xyc_start(xy->parent, NULL); 1083 1084 /* done! */ 1085 1086 splx(s); 1087 return; 1088 1089 bad: /* tells upper layers we have an error */ 1090 bp->b_flags |= B_ERROR; 1091 done: /* tells upper layers we are done with this 1092 * buf */ 1093 bp->b_resid = bp->b_bcount; 1094 biodone(bp); 1095 } 1096 /* 1097 * end of {b,c}devsw functions 1098 */ 1099 1100 /* 1101 * i n t e r r u p t f u n c t i o n 1102 * 1103 * xycintr: hardware interrupt. 1104 */ 1105 int 1106 xycintr(v) 1107 void *v; 1108 1109 { 1110 struct xyc_softc *xycsc = v; 1111 1112 /* kick the event counter */ 1113 1114 xycsc->sc_intrcnt.ev_count++; 1115 1116 /* remove as many done IOPBs as possible */ 1117 1118 xyc_remove_iorq(xycsc); 1119 1120 /* start any iorq's already waiting */ 1121 1122 xyc_start(xycsc, NULL); 1123 1124 return (1); 1125 } 1126 /* 1127 * end of interrupt function 1128 */ 1129 1130 /* 1131 * i n t e r n a l f u n c t i o n s 1132 */ 1133 1134 /* 1135 * xyc_rqinit: fill out the fields of an I/O request 1136 */ 1137 1138 inline void 1139 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1140 struct xy_iorq *rq; 1141 struct xyc_softc *xyc; 1142 struct xy_softc *xy; 1143 int md; 1144 u_long blk; 1145 int cnt; 1146 caddr_t db; 1147 struct buf *bp; 1148 { 1149 rq->xyc = xyc; 1150 rq->xy = xy; 1151 rq->ttl = XYC_MAXTTL + 10; 1152 rq->mode = md; 1153 rq->tries = rq->errno = rq->lasterror = 0; 1154 rq->blockno = blk; 1155 rq->sectcnt = cnt; 1156 rq->dbuf = db; 1157 rq->buf = bp; 1158 } 1159 1160 /* 1161 * xyc_rqtopb: load up an IOPB based on an iorq 1162 */ 1163 1164 void 1165 xyc_rqtopb(iorq, iopb, cmd, subfun) 1166 struct xy_iorq *iorq; 1167 struct xy_iopb *iopb; 1168 int cmd, subfun; 1169 1170 { 1171 u_long block, dp; 1172 1173 /* normal IOPB case, standard stuff */ 1174 1175 /* chain bit handled later */ 1176 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1177 iopb->com = cmd; 1178 iopb->errno = 0; 1179 iopb->errs = 0; 1180 iopb->done = 0; 1181 if (iorq->xy) { 1182 iopb->unit = iorq->xy->xy_drive; 1183 iopb->dt = iorq->xy->drive_type; 1184 } else { 1185 iopb->unit = 0; 1186 iopb->dt = 0; 1187 } 1188 block = iorq->blockno; 1189 if (iorq->xy == NULL || block == 0) { 1190 iopb->sect = iopb->head = iopb->cyl = 0; 1191 } else { 1192 iopb->sect = block % iorq->xy->nsect; 1193 block = block / iorq->xy->nsect; 1194 iopb->head = block % iorq->xy->nhead; 1195 block = block / iorq->xy->nhead; 1196 iopb->cyl = block; 1197 } 1198 iopb->scnt = iorq->sectcnt; 1199 dp = (u_long) iorq->dbuf; 1200 if (iorq->dbuf == NULL) { 1201 iopb->dataa = 0; 1202 iopb->datar = 0; 1203 } else { 1204 iopb->dataa = (dp & 0xffff); 1205 iopb->datar = ((dp & 0xff0000) >> 16); 1206 } 1207 iopb->subfn = subfun; 1208 } 1209 1210 1211 /* 1212 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1213 */ 1214 1215 int 1216 xyc_unbusy(xyc, del) 1217 1218 struct xyc *xyc; 1219 int del; 1220 1221 { 1222 while (del-- > 0) { 1223 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1224 break; 1225 DELAY(1); 1226 } 1227 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1228 } 1229 1230 /* 1231 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1232 * note that NORM requests are handled seperately. 1233 */ 1234 int 1235 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1236 struct xyc_softc *xycsc; 1237 int cmd, subfn, unit, block, scnt; 1238 char *dptr; 1239 int fullmode; 1240 1241 { 1242 int submode = XY_STATE(fullmode); 1243 struct xy_iorq *iorq = xycsc->ciorq; 1244 struct xy_iopb *iopb = xycsc->ciopb; 1245 1246 /* 1247 * is someone else using the control iopq wait for it if we can 1248 */ 1249 start: 1250 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1251 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1252 return(XY_ERR_FAIL); 1253 goto start; 1254 } 1255 1256 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1257 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1258 iorq->mode = XY_SUB_FREE; 1259 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1260 } 1261 1262 /* init iorq/iopb */ 1263 1264 xyc_rqinit(iorq, xycsc, 1265 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1266 fullmode, block, scnt, dptr, NULL); 1267 1268 /* load IOPB from iorq */ 1269 1270 xyc_rqtopb(iorq, iopb, cmd, subfn); 1271 1272 /* submit it for processing */ 1273 1274 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1275 1276 return(XY_ERR_AOK); 1277 } 1278 1279 /* 1280 * xyc_startbuf 1281 * start a buffer for running 1282 */ 1283 1284 int 1285 xyc_startbuf(xycsc, xysc, bp) 1286 struct xyc_softc *xycsc; 1287 struct xy_softc *xysc; 1288 struct buf *bp; 1289 1290 { 1291 int partno, error; 1292 struct xy_iorq *iorq; 1293 struct xy_iopb *iopb; 1294 u_long block; 1295 1296 iorq = xysc->xyrq; 1297 iopb = iorq->iopb; 1298 1299 /* get buf */ 1300 1301 if (bp == NULL) 1302 panic("xyc_startbuf null buf"); 1303 1304 partno = DISKPART(bp->b_dev); 1305 #ifdef XYC_DEBUG 1306 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1307 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1308 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1309 bp->b_bcount, bp->b_data); 1310 #endif 1311 1312 /* 1313 * load request. we have to calculate the correct block number based 1314 * on partition info. 1315 * 1316 * note that iorq points to the buffer as mapped into DVMA space, 1317 * where as the bp->b_data points to its non-DVMA mapping. 1318 */ 1319 1320 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1321 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1322 1323 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1324 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1325 if (error) { 1326 printf("%s: warning: cannot load DMA map\n", 1327 xycsc->sc_dev.dv_xname); 1328 return (XY_ERR_FAIL); /* XXX: need some sort of 1329 * call-back scheme here? */ 1330 } 1331 1332 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1333 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1334 ? BUS_DMASYNC_PREREAD 1335 : BUS_DMASYNC_PREWRITE); 1336 1337 /* init iorq and load iopb from it */ 1338 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1339 bp->b_bcount / XYFM_BPS, 1340 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1341 bp); 1342 1343 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1344 1345 /* Instrumentation. */ 1346 disk_busy(&xysc->sc_dk); 1347 1348 return (XY_ERR_AOK); 1349 } 1350 1351 1352 /* 1353 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1354 * if ok. if it fail returns an error code. type is XY_SUB_*. 1355 * 1356 * note: caller frees iorq in all cases except NORM 1357 * 1358 * return value: 1359 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1360 * WAIT: XY_AOK (success), <error-code> (failed) 1361 * POLL: <same as WAIT> 1362 * NOQ : <same as NORM> 1363 * 1364 * there are three sources for i/o requests: 1365 * [1] xystrategy: normal block I/O, using "struct buf" system. 1366 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1367 * [3] open/ioctl: these are I/O requests done in the context of a process, 1368 * and the process should block until they are done. 1369 * 1370 * software state is stored in the iorq structure. each iorq has an 1371 * iopb structure. the hardware understands the iopb structure. 1372 * every command must go through an iopb. a 450 handles one iopb at a 1373 * time, where as a 451 can take them in chains. [the 450 claims it 1374 * can handle chains, but is appears to be buggy...] iopb are allocated 1375 * in DVMA space at boot up time. each disk gets one iopb, and the 1376 * controller gets one (for POLL and WAIT commands). what happens if 1377 * the iopb is busy? for i/o type [1], the buffers are queued at the 1378 * "buff" layer and * picked up later by the interrupt routine. for case 1379 * [2] we can only be blocked if there is a WAIT type I/O request being 1380 * run. since this can only happen when we are crashing, we wait a sec 1381 * and then steal the IOPB. for case [3] the process can sleep 1382 * on the iorq free list until some iopbs are avaliable. 1383 */ 1384 1385 1386 int 1387 xyc_submit_iorq(xycsc, iorq, type) 1388 struct xyc_softc *xycsc; 1389 struct xy_iorq *iorq; 1390 int type; 1391 1392 { 1393 struct xy_iopb *iopb; 1394 u_long iopbaddr; 1395 1396 #ifdef XYC_DEBUG 1397 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1398 xycsc->sc_dev.dv_xname, iorq, type); 1399 #endif 1400 1401 /* first check and see if controller is busy */ 1402 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1403 #ifdef XYC_DEBUG 1404 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1405 #endif 1406 if (type == XY_SUB_NOQ) 1407 return (XY_ERR_FAIL); /* failed */ 1408 switch (type) { 1409 case XY_SUB_NORM: 1410 return XY_ERR_AOK; /* success */ 1411 case XY_SUB_WAIT: 1412 while (iorq->iopb->done == 0) { 1413 sleep(iorq, PRIBIO); 1414 } 1415 return (iorq->errno); 1416 case XY_SUB_POLL: /* steal controller */ 1417 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1418 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1419 panic("xyc_submit_iorq: stuck xyc"); 1420 printf("%s: stole controller\n", 1421 xycsc->sc_dev.dv_xname); 1422 break; 1423 default: 1424 panic("xyc_submit_iorq adding"); 1425 } 1426 } 1427 1428 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1429 if (iopb == NULL) { /* nothing doing? */ 1430 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1431 return(XY_ERR_AOK); 1432 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1433 } 1434 iopbaddr = (u_long) iopb - DVMA_BASE; 1435 1436 XYC_GO(xycsc->xyc, iopbaddr); 1437 1438 /* command now running, wrap it up */ 1439 switch (type) { 1440 case XY_SUB_NORM: 1441 case XY_SUB_NOQ: 1442 return (XY_ERR_AOK); /* success */ 1443 case XY_SUB_WAIT: 1444 while (iorq->iopb->done == 0) { 1445 sleep(iorq, PRIBIO); 1446 } 1447 return (iorq->errno); 1448 case XY_SUB_POLL: 1449 return (xyc_piodriver(xycsc, iorq)); 1450 default: 1451 panic("xyc_submit_iorq wrap up"); 1452 } 1453 panic("xyc_submit_iorq"); 1454 return 0; /* not reached */ 1455 } 1456 1457 1458 /* 1459 * xyc_chain: build a chain. return dvma address of first element in 1460 * the chain. iorq != NULL: means we only want that item on the chain. 1461 */ 1462 1463 struct xy_iopb * 1464 xyc_chain(xycsc, iorq) 1465 1466 struct xyc_softc *xycsc; 1467 struct xy_iorq *iorq; 1468 1469 { 1470 int togo, chain, hand; 1471 struct xy_iopb *iopb, *prev_iopb; 1472 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1473 1474 /* 1475 * promote control IOPB to the top 1476 */ 1477 if (iorq == NULL) { 1478 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1479 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1480 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1481 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1482 } 1483 /* 1484 * special case: if iorq != NULL then we have a POLL or WAIT request. 1485 * we let these take priority and do them first. 1486 */ 1487 if (iorq) { 1488 xycsc->xy_chain[0] = iorq; 1489 iorq->iopb->chen = 0; 1490 return(iorq->iopb); 1491 } 1492 1493 /* 1494 * NORM case: do round robin and maybe chain (if allowed and possible) 1495 */ 1496 1497 chain = 0; 1498 hand = xycsc->xy_hand; 1499 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1500 1501 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1502 1503 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1504 xycsc->iopbase[hand].done) 1505 continue; /* not ready-for-i/o */ 1506 1507 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1508 iopb = xycsc->xy_chain[chain]->iopb; 1509 iopb->chen = 0; 1510 if (chain != 0) { /* adding a link to a chain? */ 1511 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1512 prev_iopb->chen = 1; 1513 prev_iopb->nxtiopb = ((u_long) iopb - DVMA_BASE) & 0xffff; 1514 } else { /* head of chain */ 1515 iorq = xycsc->xy_chain[chain]; 1516 } 1517 chain++; 1518 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1519 } 1520 return(iorq ? iorq->iopb : NULL); 1521 } 1522 1523 /* 1524 * xyc_piodriver 1525 * 1526 * programmed i/o driver. this function takes over the computer 1527 * and drains off the polled i/o request. it returns the status of the iorq 1528 * the caller is interesting in. 1529 */ 1530 int 1531 xyc_piodriver(xycsc, iorq) 1532 struct xyc_softc *xycsc; 1533 struct xy_iorq *iorq; 1534 1535 { 1536 int nreset = 0; 1537 int retval = 0; 1538 u_long res; 1539 #ifdef XYC_DEBUG 1540 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1541 #endif 1542 1543 while (iorq->iopb->done == 0) { 1544 1545 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1546 1547 /* we expect some progress soon */ 1548 if (res == XY_ERR_FAIL && nreset >= 2) { 1549 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1550 #ifdef XYC_DEBUG 1551 printf("xyc_piodriver: timeout\n"); 1552 #endif 1553 return (XY_ERR_FAIL); 1554 } 1555 if (res == XY_ERR_FAIL) { 1556 if (xyc_reset(xycsc, 0, 1557 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1558 XY_ERR_FAIL, 1559 0) == XY_ERR_FAIL) 1560 return (XY_ERR_FAIL); /* flushes all but POLL 1561 * requests, resets */ 1562 continue; 1563 } 1564 1565 xyc_remove_iorq(xycsc); /* may resubmit request */ 1566 1567 if (iorq->iopb->done == 0) 1568 xyc_start(xycsc, iorq); 1569 } 1570 1571 /* get return value */ 1572 1573 retval = iorq->errno; 1574 1575 #ifdef XYC_DEBUG 1576 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1577 iorq->errno, xyc_e2str(iorq->errno)); 1578 #endif 1579 1580 /* start up any bufs that have queued */ 1581 1582 xyc_start(xycsc, NULL); 1583 1584 return (retval); 1585 } 1586 1587 /* 1588 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1589 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1590 */ 1591 void 1592 xyc_xyreset(xycsc, xysc) 1593 struct xyc_softc *xycsc; 1594 struct xy_softc *xysc; 1595 1596 { 1597 struct xy_iopb tmpiopb; 1598 u_long addr; 1599 int del; 1600 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1601 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1602 xycsc->ciopb->ien = 0; 1603 xycsc->ciopb->com = XYCMD_RST; 1604 xycsc->ciopb->unit = xysc->xy_drive; 1605 addr = (u_long) xycsc->ciopb - DVMA_BASE; 1606 1607 XYC_GO(xycsc->xyc, addr); 1608 1609 del = XYC_RESETUSEC; 1610 while (del > 0) { 1611 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1612 DELAY(1); 1613 del--; 1614 } 1615 1616 if (del <= 0 || xycsc->ciopb->errs) { 1617 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1618 xyc_e2str(xycsc->ciopb->errno)); 1619 del = xycsc->xyc->xyc_rsetup; 1620 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1621 panic("xyc_reset"); 1622 } else { 1623 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1624 } 1625 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1626 } 1627 1628 1629 /* 1630 * xyc_reset: reset everything: requests are marked as errors except 1631 * a polled request (which is resubmitted) 1632 */ 1633 int 1634 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1635 struct xyc_softc *xycsc; 1636 int quiet, error; 1637 struct xy_iorq *blastmode; 1638 struct xy_softc *xysc; 1639 1640 { 1641 int del = 0, lcv, retval = XY_ERR_AOK; 1642 1643 /* soft reset hardware */ 1644 1645 if (!quiet) 1646 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1647 del = xycsc->xyc->xyc_rsetup; 1648 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1649 if (del == XY_ERR_FAIL) { 1650 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1651 retval = XY_ERR_FAIL; 1652 } 1653 if (xysc) 1654 xyc_xyreset(xycsc, xysc); 1655 1656 /* fix queues based on "blast-mode" */ 1657 1658 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1659 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1660 1661 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1662 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1663 XY_STATE(iorq->mode) != XY_SUB_NORM) 1664 /* is it active? */ 1665 continue; 1666 1667 if (blastmode == XY_RSET_ALL || 1668 blastmode != iorq) { 1669 /* failed */ 1670 iorq->errno = error; 1671 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1672 switch (XY_STATE(iorq->mode)) { 1673 case XY_SUB_NORM: 1674 iorq->buf->b_error = EIO; 1675 iorq->buf->b_flags |= B_ERROR; 1676 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1677 1678 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1679 iorq->dmamap->dm_mapsize, 1680 (iorq->buf->b_flags & B_READ) 1681 ? BUS_DMASYNC_POSTREAD 1682 : BUS_DMASYNC_POSTWRITE); 1683 1684 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1685 1686 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1687 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1688 (xycsc->reqs[lcv].buf->b_bcount - 1689 xycsc->reqs[lcv].buf->b_resid)); 1690 biodone(iorq->buf); 1691 iorq->mode = XY_SUB_FREE; 1692 break; 1693 case XY_SUB_WAIT: 1694 wakeup(iorq); 1695 case XY_SUB_POLL: 1696 iorq->mode = 1697 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1698 break; 1699 } 1700 1701 } else { 1702 1703 /* resubmit, no need to do anything here */ 1704 } 1705 } 1706 1707 /* 1708 * now, if stuff is waiting, start it. 1709 * since we just reset it should go 1710 */ 1711 xyc_start(xycsc, NULL); 1712 1713 return (retval); 1714 } 1715 1716 /* 1717 * xyc_start: start waiting buffers 1718 */ 1719 1720 void 1721 xyc_start(xycsc, iorq) 1722 struct xyc_softc *xycsc; 1723 struct xy_iorq *iorq; 1724 1725 { 1726 int lcv; 1727 struct xy_softc *xy; 1728 1729 if (iorq == NULL) { 1730 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1731 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1732 if (xy->xyq.b_actf == NULL) continue; 1733 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1734 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1735 } 1736 } 1737 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1738 } 1739 1740 /* 1741 * xyc_remove_iorq: remove "done" IOPB's. 1742 */ 1743 1744 int 1745 xyc_remove_iorq(xycsc) 1746 struct xyc_softc *xycsc; 1747 1748 { 1749 int errno, rq, comm, errs; 1750 struct xyc *xyc = xycsc->xyc; 1751 u_long addr; 1752 struct xy_iopb *iopb; 1753 struct xy_iorq *iorq; 1754 struct buf *bp; 1755 1756 if (xyc->xyc_csr & XYC_DERR) { 1757 /* 1758 * DOUBLE ERROR: should never happen under normal use. This 1759 * error is so bad, you can't even tell which IOPB is bad, so 1760 * we dump them all. 1761 */ 1762 errno = XY_ERR_DERR; 1763 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1764 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1765 printf("%s: soft reset failed!\n", 1766 xycsc->sc_dev.dv_xname); 1767 panic("xyc_remove_iorq: controller DEAD"); 1768 } 1769 return (XY_ERR_AOK); 1770 } 1771 1772 /* 1773 * get iopb that is done, loop down the chain 1774 */ 1775 1776 if (xyc->xyc_csr & XYC_ERR) { 1777 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1778 } 1779 if (xyc->xyc_csr & XYC_IPND) { 1780 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1781 } 1782 1783 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1784 iorq = xycsc->xy_chain[rq]; 1785 if (iorq == NULL) break; /* done ! */ 1786 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1787 continue; /* free, or done */ 1788 iopb = iorq->iopb; 1789 if (iopb->done == 0) 1790 continue; /* not done yet */ 1791 1792 comm = iopb->com; 1793 errs = iopb->errs; 1794 1795 if (errs) 1796 iorq->errno = iopb->errno; 1797 else 1798 iorq->errno = 0; 1799 1800 /* handle non-fatal errors */ 1801 1802 if (errs && 1803 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1804 continue; /* AOK: we resubmitted it */ 1805 1806 1807 /* this iorq is now done (hasn't been restarted or anything) */ 1808 1809 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1810 xyc_perror(iorq, iopb, 0); 1811 1812 /* now, if read/write check to make sure we got all the data 1813 * we needed. (this may not be the case if we got an error in 1814 * the middle of a multisector request). */ 1815 1816 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1817 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1818 /* we just successfully processed a bad144 sector 1819 * note: if we are in bad 144 mode, the pointers have 1820 * been advanced already (see above) and are pointing 1821 * at the bad144 sector. to exit bad144 mode, we 1822 * must advance the pointers 1 sector and issue a new 1823 * request if there are still sectors left to process 1824 * 1825 */ 1826 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1827 1828 /* exit b144 mode */ 1829 iorq->mode = iorq->mode & (~XY_MODE_B144); 1830 1831 if (iorq->sectcnt) { /* more to go! */ 1832 iorq->lasterror = iorq->errno = iopb->errno = 0; 1833 iopb->errs = iopb->done = 0; 1834 iorq->tries = 0; 1835 iopb->scnt = iorq->sectcnt; 1836 iopb->cyl = iorq->blockno / 1837 iorq->xy->sectpercyl; 1838 iopb->head = 1839 (iorq->blockno / iorq->xy->nhead) % 1840 iorq->xy->nhead; 1841 iopb->sect = iorq->blockno % XYFM_BPS; 1842 addr = (u_long) iorq->dbuf; 1843 iopb->dataa = (addr & 0xffff); 1844 iopb->datar = ((addr & 0xff0000) >> 16); 1845 /* will resubit at end */ 1846 continue; 1847 } 1848 } 1849 /* final cleanup, totally done with this request */ 1850 1851 switch (XY_STATE(iorq->mode)) { 1852 case XY_SUB_NORM: 1853 bp = iorq->buf; 1854 if (errs) { 1855 bp->b_error = EIO; 1856 bp->b_flags |= B_ERROR; 1857 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1858 } else { 1859 bp->b_resid = 0; /* done */ 1860 } 1861 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1862 iorq->dmamap->dm_mapsize, 1863 (iorq->buf->b_flags & B_READ) 1864 ? BUS_DMASYNC_POSTREAD 1865 : BUS_DMASYNC_POSTWRITE); 1866 1867 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1868 1869 iorq->xy->xyq.b_actf = bp->b_actf; 1870 disk_unbusy(&iorq->xy->sc_dk, 1871 (bp->b_bcount - bp->b_resid)); 1872 iorq->mode = XY_SUB_FREE; 1873 biodone(bp); 1874 break; 1875 case XY_SUB_WAIT: 1876 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1877 wakeup(iorq); 1878 break; 1879 case XY_SUB_POLL: 1880 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1881 break; 1882 } 1883 } 1884 1885 return (XY_ERR_AOK); 1886 } 1887 1888 /* 1889 * xyc_perror: print error. 1890 * - if still_trying is true: we got an error, retried and got a 1891 * different error. in that case lasterror is the old error, 1892 * and errno is the new one. 1893 * - if still_trying is not true, then if we ever had an error it 1894 * is in lasterror. also, if iorq->errno == 0, then we recovered 1895 * from that error (otherwise iorq->errno == iorq->lasterror). 1896 */ 1897 void 1898 xyc_perror(iorq, iopb, still_trying) 1899 struct xy_iorq *iorq; 1900 struct xy_iopb *iopb; 1901 int still_trying; 1902 1903 { 1904 1905 int error = iorq->lasterror; 1906 1907 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1908 : iorq->xyc->sc_dev.dv_xname); 1909 if (iorq->buf) 1910 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1911 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1912 printf("%s %d/%d/%d: ", 1913 (iopb->com == XYCMD_RD) ? "read" : "write", 1914 iopb->cyl, iopb->head, iopb->sect); 1915 printf("%s", xyc_e2str(error)); 1916 1917 if (still_trying) 1918 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1919 else 1920 if (iorq->errno == 0) 1921 printf(" [recovered in %d tries]", iorq->tries); 1922 1923 printf("\n"); 1924 } 1925 1926 /* 1927 * xyc_error: non-fatal error encountered... recover. 1928 * return AOK if resubmitted, return FAIL if this iopb is done 1929 */ 1930 int 1931 xyc_error(xycsc, iorq, iopb, comm) 1932 struct xyc_softc *xycsc; 1933 struct xy_iorq *iorq; 1934 struct xy_iopb *iopb; 1935 int comm; 1936 1937 { 1938 int errno = iorq->errno; 1939 int erract = xyc_entoact(errno); 1940 int oldmode, advance, i; 1941 1942 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1943 oldmode = iorq->mode; 1944 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1945 /* make xyc_start ignore us */ 1946 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1947 iorq->mode = oldmode; 1948 } 1949 /* check for read/write to a sector in bad144 table if bad: redirect 1950 * request to bad144 area */ 1951 1952 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1953 (iorq->mode & XY_MODE_B144) == 0) { 1954 advance = iorq->sectcnt - iopb->scnt; 1955 XYC_ADVANCE(iorq, advance); 1956 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1957 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1958 iorq->blockno % iorq->xy->nsect)) != -1) { 1959 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1960 * redirect */ 1961 iopb->errno = iopb->done = iopb->errs = 0; 1962 iopb->scnt = 1; 1963 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1964 /* second to last acyl */ 1965 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1966 * standard */ 1967 iopb->head = i / iorq->xy->nhead; 1968 iopb->sect = i % iorq->xy->nhead; 1969 /* will resubmit when we come out of remove_iorq */ 1970 return (XY_ERR_AOK); /* recovered! */ 1971 } 1972 } 1973 1974 /* 1975 * it isn't a bad144 sector, must be real error! see if we can retry 1976 * it? 1977 */ 1978 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1979 xyc_perror(iorq, iopb, 1); /* inform of error state 1980 * change */ 1981 iorq->lasterror = errno; 1982 1983 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1984 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1985 iorq->tries++; 1986 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1987 /* will resubmit at end of remove_iorq */ 1988 return (XY_ERR_AOK); /* recovered! */ 1989 } 1990 1991 /* failed to recover from this error */ 1992 return (XY_ERR_FAIL); 1993 } 1994 1995 /* 1996 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1997 */ 1998 void 1999 xyc_tick(arg) 2000 void *arg; 2001 2002 { 2003 struct xyc_softc *xycsc = arg; 2004 int lcv, s, reset = 0; 2005 2006 /* reduce ttl for each request if one goes to zero, reset xyc */ 2007 s = splbio(); 2008 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2009 if (xycsc->reqs[lcv].mode == 0 || 2010 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2011 continue; 2012 xycsc->reqs[lcv].ttl--; 2013 if (xycsc->reqs[lcv].ttl == 0) 2014 reset = 1; 2015 } 2016 if (reset) { 2017 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2018 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2019 } 2020 splx(s); 2021 2022 /* until next time */ 2023 2024 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2025 } 2026 2027 /* 2028 * xyc_ioctlcmd: this function provides a user level interface to the 2029 * controller via ioctl. this allows "format" programs to be written 2030 * in user code, and is also useful for some debugging. we return 2031 * an error code. called at user priority. 2032 * 2033 * XXX missing a few commands (see the 7053 driver for ideas) 2034 */ 2035 int 2036 xyc_ioctlcmd(xy, dev, xio) 2037 struct xy_softc *xy; 2038 dev_t dev; 2039 struct xd_iocmd *xio; 2040 2041 { 2042 int s, rqno, dummy = 0; 2043 caddr_t dvmabuf = NULL, buf = NULL; 2044 struct xyc_softc *xycsc; 2045 int rseg, error; 2046 bus_dma_segment_t seg; 2047 2048 /* check sanity of requested command */ 2049 2050 switch (xio->cmd) { 2051 2052 case XYCMD_NOP: /* no op: everything should be zero */ 2053 if (xio->subfn || xio->dptr || xio->dlen || 2054 xio->block || xio->sectcnt) 2055 return (EINVAL); 2056 break; 2057 2058 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2059 case XYCMD_WR: 2060 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2061 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2062 return (EINVAL); 2063 break; 2064 2065 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2066 return (EINVAL); 2067 2068 break; 2069 2070 default: 2071 return (EINVAL);/* ??? */ 2072 } 2073 2074 xycsc = xy->parent; 2075 2076 /* create DVMA buffer for request if needed */ 2077 if (xio->dlen) { 2078 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2079 &seg, 1, &rseg, BUS_DMA_WAITOK); 2080 if (error) { 2081 return (error); 2082 } 2083 dvmabuf = (caddr_t)seg.ds_addr; 2084 2085 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2086 &buf, 2087 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2088 if (error) { 2089 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2090 return (error); 2091 } 2092 if (xio->cmd == XYCMD_WR) { 2093 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2094 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2095 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2096 return (error); 2097 } 2098 } 2099 } 2100 /* do it! */ 2101 2102 error = 0; 2103 s = splbio(); 2104 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2105 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2106 if (rqno == XY_ERR_FAIL) { 2107 error = EIO; 2108 goto done; 2109 } 2110 xio->errno = xycsc->ciorq->errno; 2111 xio->tries = xycsc->ciorq->tries; 2112 XYC_DONE(xycsc, dummy); 2113 2114 if (xio->cmd == XYCMD_RD) 2115 error = copyout(buf, xio->dptr, xio->dlen); 2116 2117 done: 2118 splx(s); 2119 if (dvmabuf) { 2120 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2121 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2122 } 2123 return (error); 2124 } 2125 2126 /* 2127 * xyc_e2str: convert error code number into an error string 2128 */ 2129 char * 2130 xyc_e2str(no) 2131 int no; 2132 { 2133 switch (no) { 2134 case XY_ERR_FAIL: 2135 return ("Software fatal error"); 2136 case XY_ERR_DERR: 2137 return ("DOUBLE ERROR"); 2138 case XY_ERR_AOK: 2139 return ("Successful completion"); 2140 case XY_ERR_IPEN: 2141 return("Interrupt pending"); 2142 case XY_ERR_BCFL: 2143 return("Busy conflict"); 2144 case XY_ERR_TIMO: 2145 return("Operation timeout"); 2146 case XY_ERR_NHDR: 2147 return("Header not found"); 2148 case XY_ERR_HARD: 2149 return("Hard ECC error"); 2150 case XY_ERR_ICYL: 2151 return("Illegal cylinder address"); 2152 case XY_ERR_ISEC: 2153 return("Illegal sector address"); 2154 case XY_ERR_SMAL: 2155 return("Last sector too small"); 2156 case XY_ERR_SACK: 2157 return("Slave ACK error (non-existent memory)"); 2158 case XY_ERR_CHER: 2159 return("Cylinder and head/header error"); 2160 case XY_ERR_SRTR: 2161 return("Auto-seek retry successful"); 2162 case XY_ERR_WPRO: 2163 return("Write-protect error"); 2164 case XY_ERR_UIMP: 2165 return("Unimplemented command"); 2166 case XY_ERR_DNRY: 2167 return("Drive not ready"); 2168 case XY_ERR_SZER: 2169 return("Sector count zero"); 2170 case XY_ERR_DFLT: 2171 return("Drive faulted"); 2172 case XY_ERR_ISSZ: 2173 return("Illegal sector size"); 2174 case XY_ERR_SLTA: 2175 return("Self test A"); 2176 case XY_ERR_SLTB: 2177 return("Self test B"); 2178 case XY_ERR_SLTC: 2179 return("Self test C"); 2180 case XY_ERR_SOFT: 2181 return("Soft ECC error"); 2182 case XY_ERR_SFOK: 2183 return("Soft ECC error recovered"); 2184 case XY_ERR_IHED: 2185 return("Illegal head"); 2186 case XY_ERR_DSEQ: 2187 return("Disk sequencer error"); 2188 case XY_ERR_SEEK: 2189 return("Seek error"); 2190 default: 2191 return ("Unknown error"); 2192 } 2193 } 2194 2195 int 2196 xyc_entoact(errno) 2197 2198 int errno; 2199 2200 { 2201 switch (errno) { 2202 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2203 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2204 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2205 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2206 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2207 2208 return(XY_ERA_PROG); /* program error ! */ 2209 2210 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2211 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2212 case XY_ERR_SOFT: 2213 2214 return(XY_ERA_HARD); /* hard error, retry */ 2215 2216 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2217 2218 return(XY_ERA_RSET); /* hard error reset */ 2219 2220 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2221 2222 return(XY_ERA_SOFT); /* an FYI error */ 2223 2224 case XY_ERR_WPRO: 2225 2226 return(XY_ERA_WPRO); /* write protect */ 2227 } 2228 2229 return(XY_ERA_PROG); /* ??? */ 2230 } 2231
Indexes created Tue Sep 30 11:09:46 GMT 2025