xy.c revision 1.10
1 /* $NetBSD: xy.c,v 1.10 1998/08/22 11:47:45 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/autoconf.h> 80 #include <machine/bus.h> 81 #include <machine/conf.h> 82 83 #include <dev/sun/disklabel.h> 84 85 #include <dev/vme/vmevar.h> 86 #include <dev/vme/xyreg.h> 87 #include <dev/vme/xyvar.h> 88 #include <dev/vme/xio.h> 89 90 #include "locators.h" 91 92 /* 93 * macros 94 */ 95 96 /* 97 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 98 */ 99 #define XYC_GO(XYC, ADDR) { \ 100 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 101 (ADDR) = ((ADDR) >> 8); \ 102 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_reloc_hi = (ADDR); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errno; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 150 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 151 char *xyc_e2str __P((int)); 152 int xyc_entoact __P((int)); 153 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int)); 155 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 156 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 157 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 158 int xyc_remove_iorq __P((struct xyc_softc *)); 159 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *)); 161 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 caddr_t, struct buf *)); 164 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 165 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 166 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 167 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 168 void xyc_tick __P((void *)); 169 int xyc_unbusy __P((struct xyc *, int)); 170 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 171 172 /* machine interrupt hook */ 173 int xycintr __P((void *)); 174 175 /* autoconf */ 176 int xycmatch __P((struct device *, struct cfdata *, void *)); 177 void xycattach __P((struct device *, struct device *, void *)); 178 int xymatch __P((struct device *, struct cfdata *, void *)); 179 void xyattach __P((struct device *, struct device *, void *)); 180 static int xyc_probe __P((void *, void *)); 181 182 static void xydummystrat __P((struct buf *)); 183 int xygetdisklabel __P((struct xy_softc *, void *)); 184 185 /* 186 * cfattach's: device driver interface to autoconfig 187 */ 188 189 struct cfattach xyc_ca = { 190 sizeof(struct xyc_softc), xycmatch, xycattach 191 }; 192 193 struct cfattach xy_ca = { 194 sizeof(struct xy_softc), xymatch, xyattach 195 }; 196 197 extern struct cfdriver xy_cd; 198 199 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 200 int driveno; /* unit number */ 201 int fullmode; /* submit mode */ 202 int booting; /* are we booting or not? */ 203 }; 204 205 /* 206 * dkdriver 207 */ 208 209 struct dkdriver xydkdriver = { xystrategy }; 210 211 /* 212 * start: disk label fix code (XXX) 213 */ 214 215 static void *xy_labeldata; 216 217 static void 218 xydummystrat(bp) 219 struct buf *bp; 220 { 221 if (bp->b_bcount != XYFM_BPS) 222 panic("xydummystrat"); 223 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 224 bp->b_flags |= B_DONE; 225 bp->b_flags &= ~B_BUSY; 226 } 227 228 int 229 xygetdisklabel(xy, b) 230 struct xy_softc *xy; 231 void *b; 232 { 233 char *err; 234 struct sun_disklabel *sdl; 235 236 /* We already have the label data in `b'; setup for dummy strategy */ 237 xy_labeldata = b; 238 239 /* Required parameter for readdisklabel() */ 240 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 241 242 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 243 xydummystrat, 244 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 245 if (err) { 246 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 247 return(XY_ERR_FAIL); 248 } 249 250 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 251 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 252 if (sdl->sl_magic == SUN_DKMAGIC) 253 xy->pcyl = sdl->sl_pcylinders; 254 else { 255 printf("%s: WARNING: no `pcyl' in disk label.\n", 256 xy->sc_dev.dv_xname); 257 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 258 xy->sc_dk.dk_label->d_acylinders; 259 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 260 xy->sc_dev.dv_xname, xy->pcyl); 261 } 262 263 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 264 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 265 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 266 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 267 xy->sectpercyl = xy->nhead * xy->nsect; 268 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 269 * sun->bsd */ 270 return(XY_ERR_AOK); 271 } 272 273 /* 274 * end: disk label fix code (XXX) 275 */ 276 277 /* 278 * a u t o c o n f i g f u n c t i o n s 279 */ 280 281 /* 282 * xycmatch: determine if xyc is present or not. we do a 283 * soft reset to detect the xyc. 284 */ 285 int 286 xyc_probe(vaddr, arg) 287 void *vaddr; 288 void *arg; 289 { 290 struct xyc *xyc = vaddr; 291 292 return (xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL); 293 } 294 295 int xycmatch(parent, cf, aux) 296 struct device *parent; 297 struct cfdata *cf; 298 void *aux; 299 { 300 struct vme_attach_args *va = aux; 301 vme_chipset_tag_t ct = va->vma_chipset_tag; 302 bus_space_tag_t bt = va->vma_bustag; 303 vme_mod_t mod; 304 305 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 306 307 return (vme_bus_probe(ct, bt, va->vma_reg[0], 308 offsetof(struct xyc, xyc_rsetup), 1, 309 mod, xyc_probe, 0)); 310 } 311 312 /* 313 * xycattach: attach controller 314 */ 315 void 316 xycattach(parent, self, aux) 317 struct device *parent, *self; 318 void *aux; 319 320 { 321 struct vme_attach_args *va = aux; 322 vme_chipset_tag_t ct = va->vma_chipset_tag; 323 bus_space_tag_t bt = va->vma_bustag; 324 bus_space_handle_t bh; 325 vme_intr_handle_t ih; 326 vme_mod_t mod; 327 struct xyc_softc *xyc = (void *) self; 328 struct xyc_attach_args xa; 329 int lcv, res, pbsz, error; 330 bus_dma_segment_t seg; 331 int rseg; 332 333 /* get addressing and intr level stuff from autoconfig and load it 334 * into our xyc_softc. */ 335 336 mod = VMEMOD_A16 | VMEMOD_S | VMEMOD_D; 337 338 if (vme_bus_map(ct, va->vma_reg[0], sizeof(struct xyc), 339 mod, bt, &bh) != 0) 340 panic("xyc: vme_map"); 341 342 xyc->xyc = (struct xyc *) bh; 343 xyc->ipl = va->vma_pri; 344 xyc->vector = va->vma_vec; 345 xyc->no_ols = 0; /* XXX should be from config */ 346 347 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 348 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 349 350 /* 351 * allocate and zero buffers 352 * check boundaries of the KVA's ... all IOPBs must reside in 353 * the same 64K region. 354 */ 355 356 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 357 358 error = bus_dmamem_alloc( 359 xyc->dmatag, 360 pbsz, /* size */ 361 64*1024, /* boundary */ 362 0, /* alignment */ 363 &seg, 364 1, /* # of segments */ 365 &rseg, /* actual # of segments */ 366 BUS_DMA_NOWAIT); 367 if (error) { 368 printf("%s: DMA buffer map error %d\n", 369 xyc->sc_dev.dv_xname, error); 370 return; 371 } 372 xyc->dvmaiopb = (struct xy_iopb *)seg.ds_addr; 373 374 error = bus_dmamem_map( 375 xyc->dmatag, 376 &seg, 377 rseg, 378 XYC_MAXIOPB * sizeof(struct xy_iopb), 379 (caddr_t *)&xyc->iopbase, 380 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 381 if (error) { 382 bus_dmamem_free(xyc->dmatag, &seg, rseg); 383 printf("%s: DMA buffer map error %d\n", 384 xyc->sc_dev.dv_xname, error); 385 return; 386 } 387 bzero(xyc->iopbase, pbsz); 388 389 xyc->reqs = (struct xy_iorq *) 390 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 391 if (xyc->reqs == NULL) 392 panic("xyc malloc"); 393 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 394 395 /* 396 * init iorq to iopb pointers, and non-zero fields in the 397 * iopb which never change. 398 */ 399 400 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 401 xyc->xy_chain[lcv] = NULL; 402 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 403 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 404 xyc->iopbase[lcv].asr = 1; /* always the same */ 405 xyc->iopbase[lcv].eef = 1; /* always the same */ 406 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 407 xyc->iopbase[lcv].aud = 1; /* always the same */ 408 xyc->iopbase[lcv].relo = 1; /* always the same */ 409 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 410 411 error = bus_dmamap_create( 412 xyc->dmatag, 413 MAXPHYS, /* size */ 414 1, /* nsegments */ 415 MAXPHYS, /* maxsegsz */ 416 0, /* boundary */ 417 BUS_DMA_NOWAIT, 418 &xyc->reqs[lcv].dmamap); 419 if (error) { 420 printf("%s: DMA buffer map create error %d\n", 421 xyc->sc_dev.dv_xname, error); 422 return; 423 } 424 } 425 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 426 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 427 xyc->xy_hand = 0; 428 429 /* read controller parameters and insure we have a 450/451 */ 430 431 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 432 res = xyc->ciopb->ctyp; 433 XYC_DONE(xyc, error); 434 if (res != XYCT_450) { 435 if (error) 436 printf(": %s: ", xyc_e2str(error)); 437 printf(": doesn't identify as a 450/451\n"); 438 return; 439 } 440 printf(": Xylogics 450/451"); 441 if (xyc->no_ols) 442 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 443 printf("\n"); 444 if (error) { 445 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 446 xyc_e2str(error)); 447 return; 448 } 449 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 450 printf("%s: 24 bit addressing turned off\n", 451 xyc->sc_dev.dv_xname); 452 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 453 printf("to enable 24 bit mode and this driver\n"); 454 return; 455 } 456 457 /* link in interrupt with higher level software */ 458 vme_intr_map(ct, va->vma_vec, va->vma_pri, &ih); 459 vme_intr_establish(ct, ih, xycintr, xyc); 460 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 461 vme_bus_establish(ct, &xyc->sc_dev); 462 463 464 /* now we must look for disks using autoconfig */ 465 xa.fullmode = XY_SUB_POLL; 466 xa.booting = 1; 467 468 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 469 (void) config_found(self, (void *) &xa, NULL); 470 471 /* start the watchdog clock */ 472 timeout(xyc_tick, xyc, XYC_TICKCNT); 473 474 } 475 476 /* 477 * xymatch: probe for disk. 478 * 479 * note: we almost always say disk is present. this allows us to 480 * spin up and configure a disk after the system is booted (we can 481 * call xyattach!). 482 */ 483 int 484 xymatch(parent, cf, aux) 485 struct device *parent; 486 struct cfdata *cf; 487 void *aux; 488 { 489 struct xyc_attach_args *xa = aux; 490 491 /* looking for autoconf wildcard or exact match */ 492 493 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 494 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 495 return 0; 496 497 return 1; 498 499 } 500 501 /* 502 * xyattach: attach a disk. this can be called from autoconf and also 503 * from xyopen/xystrategy. 504 */ 505 void 506 xyattach(parent, self, aux) 507 struct device *parent, *self; 508 void *aux; 509 510 { 511 struct xy_softc *xy = (void *) self, *oxy; 512 struct xyc_softc *xyc = (void *) parent; 513 struct xyc_attach_args *xa = aux; 514 int spt, mb, blk, lcv, fmode, s = 0, newstate; 515 struct dkbad *dkb; 516 int rseg, error; 517 bus_dma_segment_t seg; 518 caddr_t dmaddr; 519 caddr_t buf; 520 521 /* 522 * Always re-initialize the disk structure. We want statistics 523 * to start with a clean slate. 524 */ 525 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 526 xy->sc_dk.dk_driver = &xydkdriver; 527 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 528 529 /* if booting, init the xy_softc */ 530 531 if (xa->booting) { 532 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 533 xy->flags = 0; 534 xy->parent = xyc; 535 536 /* init queue of waiting bufs */ 537 538 xy->xyq.b_active = 0; 539 xy->xyq.b_actf = 0; 540 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 541 542 xy->xyrq = &xyc->reqs[xa->driveno]; 543 544 } 545 xy->xy_drive = xa->driveno; 546 fmode = xa->fullmode; 547 xyc->sc_drives[xa->driveno] = xy; 548 549 /* if not booting, make sure we are the only process in the attach for 550 * this drive. if locked out, sleep on it. */ 551 552 if (!xa->booting) { 553 s = splbio(); 554 while (xy->state == XY_DRIVE_ATTACHING) { 555 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 556 splx(s); 557 return; 558 } 559 } 560 printf("%s at %s", 561 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 562 } 563 564 /* we now have control */ 565 xy->state = XY_DRIVE_ATTACHING; 566 newstate = XY_DRIVE_UNKNOWN; 567 568 buf = NULL; 569 error = bus_dmamem_alloc(xyc->dmatag, XYFM_BPS, NBPG, 0, 570 &seg, 1, &rseg, BUS_DMA_NOWAIT); 571 if (error) { 572 printf("%s: DMA buffer alloc error %d\n", 573 xy->sc_dev.dv_xname, error); 574 goto done; 575 } 576 dmaddr = (caddr_t)seg.ds_addr; 577 578 error = bus_dmamem_map(xyc->dmatag, &seg, rseg, XYFM_BPS, 579 &buf, 580 BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 581 if (error) { 582 printf("%s: DMA buffer alloc error %d\n", 583 xy->sc_dev.dv_xname, error); 584 bus_dmamem_free(xyc->dmatag, &seg, rseg); 585 goto done; 586 } 587 588 589 /* first try and reset the drive */ 590 591 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 592 XYC_DONE(xyc, error); 593 if (error == XY_ERR_DNRY) { 594 printf(" drive %d: off-line\n", xa->driveno); 595 goto done; 596 } 597 if (error) { 598 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 599 goto done; 600 } 601 printf(" drive %d: ready", xa->driveno); 602 603 /* 604 * now set drive parameters (to semi-bogus values) so we can read the 605 * disk label. 606 */ 607 xy->pcyl = xy->ncyl = 1; 608 xy->acyl = 0; 609 xy->nhead = 1; 610 xy->nsect = 1; 611 xy->sectpercyl = 1; 612 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 613 xy->dkb.bt_bad[lcv].bt_cyl = 614 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 615 616 /* read disk label */ 617 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 618 xy->drive_type++) { 619 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 620 dmaddr, fmode); 621 XYC_DONE(xyc, error); 622 if (error == XY_ERR_AOK) break; 623 } 624 625 if (error != XY_ERR_AOK) { 626 printf("\n%s: reading disk label failed: %s\n", 627 xy->sc_dev.dv_xname, xyc_e2str(error)); 628 goto done; 629 } 630 printf(" (drive type %d)\n", xy->drive_type); 631 632 newstate = XY_DRIVE_NOLABEL; 633 634 xy->hw_spt = spt = 0; /* XXX needed ? */ 635 /* Attach the disk: must be before getdisklabel to malloc label */ 636 disk_attach(&xy->sc_dk); 637 638 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 639 goto done; 640 641 /* inform the user of what is up */ 642 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 643 buf, xy->pcyl); 644 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 645 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 646 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 647 XYFM_BPS); 648 649 /* 650 * 450/451 stupidity: the drive type is encoded into the format 651 * of the disk. the drive type in the IOPB must match the drive 652 * type in the format, or you will not be able to do I/O to the 653 * disk (you get header not found errors). if you have two drives 654 * of different sizes that have the same drive type in their 655 * formatting then you are out of luck. 656 * 657 * this problem was corrected in the 753/7053. 658 */ 659 660 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 661 oxy = xyc->sc_drives[lcv]; 662 if (oxy == NULL || oxy == xy) continue; 663 if (oxy->drive_type != xy->drive_type) continue; 664 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 665 xy->nhead != oxy->nhead) { 666 printf("%s: %s and %s must be the same size!\n", 667 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 668 oxy->sc_dev.dv_xname); 669 panic("xy drive size mismatch"); 670 } 671 } 672 673 674 /* now set the real drive parameters! */ 675 676 blk = (xy->nsect - 1) + 677 ((xy->nhead - 1) * xy->nsect) + 678 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 679 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 680 XYC_DONE(xyc, error); 681 if (error) { 682 printf("%s: write drive size failed: %s\n", 683 xy->sc_dev.dv_xname, xyc_e2str(error)); 684 goto done; 685 } 686 newstate = XY_DRIVE_ONLINE; 687 688 /* 689 * read bad144 table. this table resides on the first sector of the 690 * last track of the disk (i.e. second cyl of "acyl" area). 691 */ 692 693 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 694 /* last cyl */ 695 (xy->nhead - 1) * xy->nsect; /* last head */ 696 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 697 dmaddr, fmode); 698 XYC_DONE(xyc, error); 699 if (error) { 700 printf("%s: reading bad144 failed: %s\n", 701 xy->sc_dev.dv_xname, xyc_e2str(error)); 702 goto done; 703 } 704 705 /* check dkbad for sanity */ 706 dkb = (struct dkbad *) buf; 707 for (lcv = 0; lcv < 126; lcv++) { 708 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 709 dkb->bt_bad[lcv].bt_cyl == 0) && 710 dkb->bt_bad[lcv].bt_trksec == 0xffff) 711 continue; /* blank */ 712 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 713 break; 714 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 715 break; 716 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 717 break; 718 } 719 if (lcv != 126) { 720 printf("%s: warning: invalid bad144 sector!\n", 721 xy->sc_dev.dv_xname); 722 } else { 723 bcopy(buf, &xy->dkb, XYFM_BPS); 724 } 725 726 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 727 728 done: 729 if (buf != NULL) { 730 bus_dmamem_unmap(xyc->dmatag, buf, XYFM_BPS); 731 bus_dmamem_free(xyc->dmatag, &seg, rseg); 732 } 733 734 xy->state = newstate; 735 if (!xa->booting) { 736 wakeup(&xy->state); 737 splx(s); 738 } 739 } 740 741 /* 742 * end of autoconfig functions 743 */ 744 745 /* 746 * { b , c } d e v s w f u n c t i o n s 747 */ 748 749 /* 750 * xyclose: close device 751 */ 752 int 753 xyclose(dev, flag, fmt, p) 754 dev_t dev; 755 int flag, fmt; 756 struct proc *p; 757 758 { 759 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 760 int part = DISKPART(dev); 761 762 /* clear mask bits */ 763 764 switch (fmt) { 765 case S_IFCHR: 766 xy->sc_dk.dk_copenmask &= ~(1 << part); 767 break; 768 case S_IFBLK: 769 xy->sc_dk.dk_bopenmask &= ~(1 << part); 770 break; 771 } 772 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 773 774 return 0; 775 } 776 777 /* 778 * xydump: crash dump system 779 */ 780 int 781 xydump(dev, blkno, va, size) 782 dev_t dev; 783 daddr_t blkno; 784 caddr_t va; 785 size_t size; 786 { 787 int unit, part; 788 struct xy_softc *xy; 789 790 unit = DISKUNIT(dev); 791 if (unit >= xy_cd.cd_ndevs) 792 return ENXIO; 793 part = DISKPART(dev); 794 795 xy = xy_cd.cd_devs[unit]; 796 797 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 798 'a' + part); 799 800 return ENXIO; 801 802 /* outline: globals: "dumplo" == sector number of partition to start 803 * dump at (convert to physical sector with partition table) 804 * "dumpsize" == size of dump in clicks "physmem" == size of physical 805 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 806 * physmem) 807 * 808 * dump a copy of physical memory to the dump device starting at sector 809 * "dumplo" in the swap partition (make sure > 0). map in pages as 810 * we go. use polled I/O. 811 * 812 * XXX how to handle NON_CONTIG? */ 813 814 } 815 816 /* 817 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 818 */ 819 int 820 xyioctl(dev, command, addr, flag, p) 821 dev_t dev; 822 u_long command; 823 caddr_t addr; 824 int flag; 825 struct proc *p; 826 827 { 828 struct xy_softc *xy; 829 struct xd_iocmd *xio; 830 int error, s, unit; 831 832 unit = DISKUNIT(dev); 833 834 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 835 return (ENXIO); 836 837 /* switch on ioctl type */ 838 839 switch (command) { 840 case DIOCSBAD: /* set bad144 info */ 841 if ((flag & FWRITE) == 0) 842 return EBADF; 843 s = splbio(); 844 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 845 splx(s); 846 return 0; 847 848 case DIOCGDINFO: /* get disk label */ 849 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 850 return 0; 851 852 case DIOCGPART: /* get partition info */ 853 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 854 ((struct partinfo *) addr)->part = 855 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 856 return 0; 857 858 case DIOCSDINFO: /* set disk label */ 859 if ((flag & FWRITE) == 0) 860 return EBADF; 861 error = setdisklabel(xy->sc_dk.dk_label, 862 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 863 xy->sc_dk.dk_cpulabel); 864 if (error == 0) { 865 if (xy->state == XY_DRIVE_NOLABEL) 866 xy->state = XY_DRIVE_ONLINE; 867 } 868 return error; 869 870 case DIOCWLABEL: /* change write status of disk label */ 871 if ((flag & FWRITE) == 0) 872 return EBADF; 873 if (*(int *) addr) 874 xy->flags |= XY_WLABEL; 875 else 876 xy->flags &= ~XY_WLABEL; 877 return 0; 878 879 case DIOCWDINFO: /* write disk label */ 880 if ((flag & FWRITE) == 0) 881 return EBADF; 882 error = setdisklabel(xy->sc_dk.dk_label, 883 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 884 xy->sc_dk.dk_cpulabel); 885 if (error == 0) { 886 if (xy->state == XY_DRIVE_NOLABEL) 887 xy->state = XY_DRIVE_ONLINE; 888 889 /* Simulate opening partition 0 so write succeeds. */ 890 xy->sc_dk.dk_openmask |= (1 << 0); 891 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 892 xystrategy, xy->sc_dk.dk_label, 893 xy->sc_dk.dk_cpulabel); 894 xy->sc_dk.dk_openmask = 895 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 896 } 897 return error; 898 899 case DIOSXDCMD: 900 xio = (struct xd_iocmd *) addr; 901 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 902 return (error); 903 return (xyc_ioctlcmd(xy, dev, xio)); 904 905 default: 906 return ENOTTY; 907 } 908 } 909 910 /* 911 * xyopen: open drive 912 */ 913 914 int 915 xyopen(dev, flag, fmt, p) 916 dev_t dev; 917 int flag, fmt; 918 struct proc *p; 919 { 920 int unit, part; 921 struct xy_softc *xy; 922 struct xyc_attach_args xa; 923 924 /* first, could it be a valid target? */ 925 926 unit = DISKUNIT(dev); 927 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 928 return (ENXIO); 929 part = DISKPART(dev); 930 931 /* do we need to attach the drive? */ 932 933 if (xy->state == XY_DRIVE_UNKNOWN) { 934 xa.driveno = xy->xy_drive; 935 xa.fullmode = XY_SUB_WAIT; 936 xa.booting = 0; 937 xyattach((struct device *) xy->parent, 938 (struct device *) xy, &xa); 939 if (xy->state == XY_DRIVE_UNKNOWN) { 940 return (EIO); 941 } 942 } 943 /* check for partition */ 944 945 if (part != RAW_PART && 946 (part >= xy->sc_dk.dk_label->d_npartitions || 947 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 948 return (ENXIO); 949 } 950 /* set open masks */ 951 952 switch (fmt) { 953 case S_IFCHR: 954 xy->sc_dk.dk_copenmask |= (1 << part); 955 break; 956 case S_IFBLK: 957 xy->sc_dk.dk_bopenmask |= (1 << part); 958 break; 959 } 960 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 961 962 return 0; 963 } 964 965 int 966 xyread(dev, uio, flags) 967 dev_t dev; 968 struct uio *uio; 969 int flags; 970 { 971 972 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 973 } 974 975 int 976 xywrite(dev, uio, flags) 977 dev_t dev; 978 struct uio *uio; 979 int flags; 980 { 981 982 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 983 } 984 985 986 /* 987 * xysize: return size of a partition for a dump 988 */ 989 990 int 991 xysize(dev) 992 dev_t dev; 993 994 { 995 struct xy_softc *xysc; 996 int unit, part, size, omask; 997 998 /* valid unit? */ 999 unit = DISKUNIT(dev); 1000 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1001 return (-1); 1002 1003 part = DISKPART(dev); 1004 omask = xysc->sc_dk.dk_openmask & (1 << part); 1005 1006 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1007 return (-1); 1008 1009 /* do it */ 1010 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1011 size = -1; /* only give valid size for swap partitions */ 1012 else 1013 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1014 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1015 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1016 return (-1); 1017 return (size); 1018 } 1019 1020 /* 1021 * xystrategy: buffering system interface to xy. 1022 */ 1023 1024 void 1025 xystrategy(bp) 1026 struct buf *bp; 1027 1028 { 1029 struct xy_softc *xy; 1030 int s, unit; 1031 struct xyc_attach_args xa; 1032 1033 unit = DISKUNIT(bp->b_dev); 1034 1035 /* check for live device */ 1036 1037 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1038 bp->b_blkno < 0 || 1039 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1040 bp->b_error = EINVAL; 1041 goto bad; 1042 } 1043 /* do we need to attach the drive? */ 1044 1045 if (xy->state == XY_DRIVE_UNKNOWN) { 1046 xa.driveno = xy->xy_drive; 1047 xa.fullmode = XY_SUB_WAIT; 1048 xa.booting = 0; 1049 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1050 if (xy->state == XY_DRIVE_UNKNOWN) { 1051 bp->b_error = EIO; 1052 goto bad; 1053 } 1054 } 1055 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1056 /* no I/O to unlabeled disks, unless raw partition */ 1057 bp->b_error = EIO; 1058 goto bad; 1059 } 1060 /* short circuit zero length request */ 1061 1062 if (bp->b_bcount == 0) 1063 goto done; 1064 1065 /* check bounds with label (disksubr.c). Determine the size of the 1066 * transfer, and make sure it is within the boundaries of the 1067 * partition. Adjust transfer if needed, and signal errors or early 1068 * completion. */ 1069 1070 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1071 (xy->flags & XY_WLABEL) != 0) <= 0) 1072 goto done; 1073 1074 /* 1075 * now we know we have a valid buf structure that we need to do I/O 1076 * on. 1077 */ 1078 s = splbio(); /* protect the queues */ 1079 1080 disksort(&xy->xyq, bp); 1081 1082 /* start 'em up */ 1083 1084 xyc_start(xy->parent, NULL); 1085 1086 /* done! */ 1087 1088 splx(s); 1089 return; 1090 1091 bad: /* tells upper layers we have an error */ 1092 bp->b_flags |= B_ERROR; 1093 done: /* tells upper layers we are done with this 1094 * buf */ 1095 bp->b_resid = bp->b_bcount; 1096 biodone(bp); 1097 } 1098 /* 1099 * end of {b,c}devsw functions 1100 */ 1101 1102 /* 1103 * i n t e r r u p t f u n c t i o n 1104 * 1105 * xycintr: hardware interrupt. 1106 */ 1107 int 1108 xycintr(v) 1109 void *v; 1110 1111 { 1112 struct xyc_softc *xycsc = v; 1113 1114 /* kick the event counter */ 1115 1116 xycsc->sc_intrcnt.ev_count++; 1117 1118 /* remove as many done IOPBs as possible */ 1119 1120 xyc_remove_iorq(xycsc); 1121 1122 /* start any iorq's already waiting */ 1123 1124 xyc_start(xycsc, NULL); 1125 1126 return (1); 1127 } 1128 /* 1129 * end of interrupt function 1130 */ 1131 1132 /* 1133 * i n t e r n a l f u n c t i o n s 1134 */ 1135 1136 /* 1137 * xyc_rqinit: fill out the fields of an I/O request 1138 */ 1139 1140 inline void 1141 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1142 struct xy_iorq *rq; 1143 struct xyc_softc *xyc; 1144 struct xy_softc *xy; 1145 int md; 1146 u_long blk; 1147 int cnt; 1148 caddr_t db; 1149 struct buf *bp; 1150 { 1151 rq->xyc = xyc; 1152 rq->xy = xy; 1153 rq->ttl = XYC_MAXTTL + 10; 1154 rq->mode = md; 1155 rq->tries = rq->errno = rq->lasterror = 0; 1156 rq->blockno = blk; 1157 rq->sectcnt = cnt; 1158 rq->dbuf = db; 1159 rq->buf = bp; 1160 } 1161 1162 /* 1163 * xyc_rqtopb: load up an IOPB based on an iorq 1164 */ 1165 1166 void 1167 xyc_rqtopb(iorq, iopb, cmd, subfun) 1168 struct xy_iorq *iorq; 1169 struct xy_iopb *iopb; 1170 int cmd, subfun; 1171 1172 { 1173 u_long block, dp; 1174 1175 /* normal IOPB case, standard stuff */ 1176 1177 /* chain bit handled later */ 1178 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1179 iopb->com = cmd; 1180 iopb->errno = 0; 1181 iopb->errs = 0; 1182 iopb->done = 0; 1183 if (iorq->xy) { 1184 iopb->unit = iorq->xy->xy_drive; 1185 iopb->dt = iorq->xy->drive_type; 1186 } else { 1187 iopb->unit = 0; 1188 iopb->dt = 0; 1189 } 1190 block = iorq->blockno; 1191 if (iorq->xy == NULL || block == 0) { 1192 iopb->sect = iopb->head = iopb->cyl = 0; 1193 } else { 1194 iopb->sect = block % iorq->xy->nsect; 1195 block = block / iorq->xy->nsect; 1196 iopb->head = block % iorq->xy->nhead; 1197 block = block / iorq->xy->nhead; 1198 iopb->cyl = block; 1199 } 1200 iopb->scnt = iorq->sectcnt; 1201 dp = (u_long) iorq->dbuf; 1202 if (iorq->dbuf == NULL) { 1203 iopb->dataa = 0; 1204 iopb->datar = 0; 1205 } else { 1206 iopb->dataa = (dp & 0xffff); 1207 iopb->datar = ((dp & 0xff0000) >> 16); 1208 } 1209 iopb->subfn = subfun; 1210 } 1211 1212 1213 /* 1214 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1215 */ 1216 1217 int 1218 xyc_unbusy(xyc, del) 1219 1220 struct xyc *xyc; 1221 int del; 1222 1223 { 1224 while (del-- > 0) { 1225 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1226 break; 1227 DELAY(1); 1228 } 1229 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1230 } 1231 1232 /* 1233 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1234 * note that NORM requests are handled seperately. 1235 */ 1236 int 1237 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1238 struct xyc_softc *xycsc; 1239 int cmd, subfn, unit, block, scnt; 1240 char *dptr; 1241 int fullmode; 1242 1243 { 1244 int submode = XY_STATE(fullmode); 1245 struct xy_iorq *iorq = xycsc->ciorq; 1246 struct xy_iopb *iopb = xycsc->ciopb; 1247 1248 /* 1249 * is someone else using the control iopq wait for it if we can 1250 */ 1251 start: 1252 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1253 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1254 return(XY_ERR_FAIL); 1255 goto start; 1256 } 1257 1258 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1259 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1260 iorq->mode = XY_SUB_FREE; 1261 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1262 } 1263 1264 /* init iorq/iopb */ 1265 1266 xyc_rqinit(iorq, xycsc, 1267 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1268 fullmode, block, scnt, dptr, NULL); 1269 1270 /* load IOPB from iorq */ 1271 1272 xyc_rqtopb(iorq, iopb, cmd, subfn); 1273 1274 /* submit it for processing */ 1275 1276 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1277 1278 return(XY_ERR_AOK); 1279 } 1280 1281 /* 1282 * xyc_startbuf 1283 * start a buffer for running 1284 */ 1285 1286 int 1287 xyc_startbuf(xycsc, xysc, bp) 1288 struct xyc_softc *xycsc; 1289 struct xy_softc *xysc; 1290 struct buf *bp; 1291 1292 { 1293 int partno, error; 1294 struct xy_iorq *iorq; 1295 struct xy_iopb *iopb; 1296 u_long block; 1297 1298 iorq = xysc->xyrq; 1299 iopb = iorq->iopb; 1300 1301 /* get buf */ 1302 1303 if (bp == NULL) 1304 panic("xyc_startbuf null buf"); 1305 1306 partno = DISKPART(bp->b_dev); 1307 #ifdef XYC_DEBUG 1308 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1309 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1310 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1311 bp->b_bcount, bp->b_data); 1312 #endif 1313 1314 /* 1315 * load request. we have to calculate the correct block number based 1316 * on partition info. 1317 * 1318 * note that iorq points to the buffer as mapped into DVMA space, 1319 * where as the bp->b_data points to its non-DVMA mapping. 1320 */ 1321 1322 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1323 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1324 1325 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1326 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1327 if (error != 0) { 1328 printf("%s: warning: cannot load DMA map\n", 1329 xycsc->sc_dev.dv_xname); 1330 return (XY_ERR_FAIL); /* XXX: need some sort of 1331 * call-back scheme here? */ 1332 } 1333 1334 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1335 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1336 ? BUS_DMASYNC_PREREAD 1337 : BUS_DMASYNC_PREWRITE); 1338 1339 /* init iorq and load iopb from it */ 1340 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1341 bp->b_bcount / XYFM_BPS, 1342 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1343 bp); 1344 1345 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1346 1347 /* Instrumentation. */ 1348 disk_busy(&xysc->sc_dk); 1349 1350 return (XY_ERR_AOK); 1351 } 1352 1353 1354 /* 1355 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1356 * if ok. if it fail returns an error code. type is XY_SUB_*. 1357 * 1358 * note: caller frees iorq in all cases except NORM 1359 * 1360 * return value: 1361 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1362 * WAIT: XY_AOK (success), <error-code> (failed) 1363 * POLL: <same as WAIT> 1364 * NOQ : <same as NORM> 1365 * 1366 * there are three sources for i/o requests: 1367 * [1] xystrategy: normal block I/O, using "struct buf" system. 1368 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1369 * [3] open/ioctl: these are I/O requests done in the context of a process, 1370 * and the process should block until they are done. 1371 * 1372 * software state is stored in the iorq structure. each iorq has an 1373 * iopb structure. the hardware understands the iopb structure. 1374 * every command must go through an iopb. a 450 handles one iopb at a 1375 * time, where as a 451 can take them in chains. [the 450 claims it 1376 * can handle chains, but is appears to be buggy...] iopb are allocated 1377 * in DVMA space at boot up time. each disk gets one iopb, and the 1378 * controller gets one (for POLL and WAIT commands). what happens if 1379 * the iopb is busy? for i/o type [1], the buffers are queued at the 1380 * "buff" layer and * picked up later by the interrupt routine. for case 1381 * [2] we can only be blocked if there is a WAIT type I/O request being 1382 * run. since this can only happen when we are crashing, we wait a sec 1383 * and then steal the IOPB. for case [3] the process can sleep 1384 * on the iorq free list until some iopbs are avaliable. 1385 */ 1386 1387 1388 int 1389 xyc_submit_iorq(xycsc, iorq, type) 1390 struct xyc_softc *xycsc; 1391 struct xy_iorq *iorq; 1392 int type; 1393 1394 { 1395 struct xy_iopb *dmaiopb; 1396 1397 #ifdef XYC_DEBUG 1398 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1399 xycsc->sc_dev.dv_xname, iorq, type); 1400 #endif 1401 1402 /* first check and see if controller is busy */ 1403 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1404 #ifdef XYC_DEBUG 1405 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1406 #endif 1407 if (type == XY_SUB_NOQ) 1408 return (XY_ERR_FAIL); /* failed */ 1409 switch (type) { 1410 case XY_SUB_NORM: 1411 return XY_ERR_AOK; /* success */ 1412 case XY_SUB_WAIT: 1413 while (iorq->iopb->done == 0) { 1414 sleep(iorq, PRIBIO); 1415 } 1416 return (iorq->errno); 1417 case XY_SUB_POLL: /* steal controller */ 1418 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1419 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1420 panic("xyc_submit_iorq: stuck xyc"); 1421 printf("%s: stole controller\n", 1422 xycsc->sc_dev.dv_xname); 1423 break; 1424 default: 1425 panic("xyc_submit_iorq adding"); 1426 } 1427 } 1428 1429 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1430 if (dmaiopb == NULL) { /* nothing doing? */ 1431 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1432 return(XY_ERR_AOK); 1433 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1434 } 1435 1436 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 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 struct xyc_softc *xycsc; 1466 struct xy_iorq *iorq; 1467 1468 { 1469 int togo, chain, hand; 1470 1471 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1472 1473 /* 1474 * promote control IOPB to the top 1475 */ 1476 if (iorq == NULL) { 1477 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1478 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1479 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1480 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1481 } 1482 1483 /* 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->dmaiopb); 1491 } 1492 1493 /* 1494 * NORM case: do round robin and maybe chain (if allowed and possible) 1495 */ 1496 chain = 0; 1497 hand = xycsc->xy_hand; 1498 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1499 1500 for (togo = XYC_MAXIOPB; togo > 0; 1501 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1502 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1503 1504 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1505 xycsc->iopbase[hand].done) 1506 continue; /* not ready-for-i/o */ 1507 1508 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1509 iopb = xycsc->xy_chain[chain]->iopb; 1510 iopb->chen = 0; 1511 if (chain != 0) { 1512 /* adding a link to a chain */ 1513 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1514 prev_iopb->chen = 1; 1515 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1516 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1517 } else { 1518 /* head of chain */ 1519 iorq = xycsc->xy_chain[chain]; 1520 } 1521 chain++; 1522 1523 /* quit if chaining dis-allowed */ 1524 if (xycsc->no_ols) 1525 break; 1526 } 1527 1528 return(iorq ? iorq->dmaiopb : NULL); 1529 } 1530 1531 /* 1532 * xyc_piodriver 1533 * 1534 * programmed i/o driver. this function takes over the computer 1535 * and drains off the polled i/o request. it returns the status of the iorq 1536 * the caller is interesting in. 1537 */ 1538 int 1539 xyc_piodriver(xycsc, iorq) 1540 struct xyc_softc *xycsc; 1541 struct xy_iorq *iorq; 1542 1543 { 1544 int nreset = 0; 1545 int retval = 0; 1546 u_long res; 1547 #ifdef XYC_DEBUG 1548 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1549 #endif 1550 1551 while (iorq->iopb->done == 0) { 1552 1553 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1554 1555 /* we expect some progress soon */ 1556 if (res == XY_ERR_FAIL && nreset >= 2) { 1557 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1558 #ifdef XYC_DEBUG 1559 printf("xyc_piodriver: timeout\n"); 1560 #endif 1561 return (XY_ERR_FAIL); 1562 } 1563 if (res == XY_ERR_FAIL) { 1564 if (xyc_reset(xycsc, 0, 1565 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1566 XY_ERR_FAIL, 1567 0) == XY_ERR_FAIL) 1568 return (XY_ERR_FAIL); /* flushes all but POLL 1569 * requests, resets */ 1570 continue; 1571 } 1572 1573 xyc_remove_iorq(xycsc); /* may resubmit request */ 1574 1575 if (iorq->iopb->done == 0) 1576 xyc_start(xycsc, iorq); 1577 } 1578 1579 /* get return value */ 1580 1581 retval = iorq->errno; 1582 1583 #ifdef XYC_DEBUG 1584 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1585 iorq->errno, xyc_e2str(iorq->errno)); 1586 #endif 1587 1588 /* start up any bufs that have queued */ 1589 1590 xyc_start(xycsc, NULL); 1591 1592 return (retval); 1593 } 1594 1595 /* 1596 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1597 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1598 */ 1599 void 1600 xyc_xyreset(xycsc, xysc) 1601 struct xyc_softc *xycsc; 1602 struct xy_softc *xysc; 1603 1604 { 1605 struct xy_iopb tmpiopb; 1606 struct xy_iopb *iopb; 1607 int del; 1608 1609 iopb = xycsc->ciopb; 1610 1611 /* Save contents */ 1612 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1613 1614 iopb->chen = iopb->done = iopb->errs = 0; 1615 iopb->ien = 0; 1616 iopb->com = XYCMD_RST; 1617 iopb->unit = xysc->xy_drive; 1618 1619 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1620 1621 del = XYC_RESETUSEC; 1622 while (del > 0) { 1623 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1624 break; 1625 DELAY(1); 1626 del--; 1627 } 1628 1629 if (del <= 0 || iopb->errs) { 1630 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1631 xyc_e2str(iopb->errno)); 1632 del = xycsc->xyc->xyc_rsetup; 1633 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1634 panic("xyc_reset"); 1635 } else { 1636 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1637 } 1638 1639 /* Restore contents */ 1640 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1641 } 1642 1643 1644 /* 1645 * xyc_reset: reset everything: requests are marked as errors except 1646 * a polled request (which is resubmitted) 1647 */ 1648 int 1649 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1650 struct xyc_softc *xycsc; 1651 int quiet, error; 1652 struct xy_iorq *blastmode; 1653 struct xy_softc *xysc; 1654 1655 { 1656 int del = 0, lcv, retval = XY_ERR_AOK; 1657 1658 /* soft reset hardware */ 1659 1660 if (!quiet) 1661 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1662 del = xycsc->xyc->xyc_rsetup; 1663 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1664 if (del == XY_ERR_FAIL) { 1665 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1666 retval = XY_ERR_FAIL; 1667 } 1668 if (xysc) 1669 xyc_xyreset(xycsc, xysc); 1670 1671 /* fix queues based on "blast-mode" */ 1672 1673 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1674 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1675 1676 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1677 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1678 XY_STATE(iorq->mode) != XY_SUB_NORM) 1679 /* is it active? */ 1680 continue; 1681 1682 if (blastmode == XY_RSET_ALL || 1683 blastmode != iorq) { 1684 /* failed */ 1685 iorq->errno = error; 1686 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1687 switch (XY_STATE(iorq->mode)) { 1688 case XY_SUB_NORM: 1689 iorq->buf->b_error = EIO; 1690 iorq->buf->b_flags |= B_ERROR; 1691 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1692 1693 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1694 iorq->dmamap->dm_mapsize, 1695 (iorq->buf->b_flags & B_READ) 1696 ? BUS_DMASYNC_POSTREAD 1697 : BUS_DMASYNC_POSTWRITE); 1698 1699 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1700 1701 iorq->xy->xyq.b_actf = iorq->buf->b_actf; 1702 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1703 (xycsc->reqs[lcv].buf->b_bcount - 1704 xycsc->reqs[lcv].buf->b_resid)); 1705 biodone(iorq->buf); 1706 iorq->mode = XY_SUB_FREE; 1707 break; 1708 case XY_SUB_WAIT: 1709 wakeup(iorq); 1710 case XY_SUB_POLL: 1711 iorq->mode = 1712 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1713 break; 1714 } 1715 1716 } else { 1717 1718 /* resubmit, no need to do anything here */ 1719 } 1720 } 1721 1722 /* 1723 * now, if stuff is waiting, start it. 1724 * since we just reset it should go 1725 */ 1726 xyc_start(xycsc, NULL); 1727 1728 return (retval); 1729 } 1730 1731 /* 1732 * xyc_start: start waiting buffers 1733 */ 1734 1735 void 1736 xyc_start(xycsc, iorq) 1737 struct xyc_softc *xycsc; 1738 struct xy_iorq *iorq; 1739 1740 { 1741 int lcv; 1742 struct xy_softc *xy; 1743 1744 if (iorq == NULL) { 1745 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1746 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1747 if (xy->xyq.b_actf == NULL) continue; 1748 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1749 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1750 } 1751 } 1752 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1753 } 1754 1755 /* 1756 * xyc_remove_iorq: remove "done" IOPB's. 1757 */ 1758 1759 int 1760 xyc_remove_iorq(xycsc) 1761 struct xyc_softc *xycsc; 1762 1763 { 1764 int errno, rq, comm, errs; 1765 struct xyc *xyc = xycsc->xyc; 1766 u_long addr; 1767 struct xy_iopb *iopb; 1768 struct xy_iorq *iorq; 1769 struct buf *bp; 1770 1771 if (xyc->xyc_csr & XYC_DERR) { 1772 /* 1773 * DOUBLE ERROR: should never happen under normal use. This 1774 * error is so bad, you can't even tell which IOPB is bad, so 1775 * we dump them all. 1776 */ 1777 errno = XY_ERR_DERR; 1778 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1779 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1780 printf("%s: soft reset failed!\n", 1781 xycsc->sc_dev.dv_xname); 1782 panic("xyc_remove_iorq: controller DEAD"); 1783 } 1784 return (XY_ERR_AOK); 1785 } 1786 1787 /* 1788 * get iopb that is done, loop down the chain 1789 */ 1790 1791 if (xyc->xyc_csr & XYC_ERR) { 1792 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1793 } 1794 if (xyc->xyc_csr & XYC_IPND) { 1795 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1796 } 1797 1798 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1799 iorq = xycsc->xy_chain[rq]; 1800 if (iorq == NULL) break; /* done ! */ 1801 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1802 continue; /* free, or done */ 1803 iopb = iorq->iopb; 1804 if (iopb->done == 0) 1805 continue; /* not done yet */ 1806 1807 comm = iopb->com; 1808 errs = iopb->errs; 1809 1810 if (errs) 1811 iorq->errno = iopb->errno; 1812 else 1813 iorq->errno = 0; 1814 1815 /* handle non-fatal errors */ 1816 1817 if (errs && 1818 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1819 continue; /* AOK: we resubmitted it */ 1820 1821 1822 /* this iorq is now done (hasn't been restarted or anything) */ 1823 1824 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1825 xyc_perror(iorq, iopb, 0); 1826 1827 /* now, if read/write check to make sure we got all the data 1828 * we needed. (this may not be the case if we got an error in 1829 * the middle of a multisector request). */ 1830 1831 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1832 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1833 /* we just successfully processed a bad144 sector 1834 * note: if we are in bad 144 mode, the pointers have 1835 * been advanced already (see above) and are pointing 1836 * at the bad144 sector. to exit bad144 mode, we 1837 * must advance the pointers 1 sector and issue a new 1838 * request if there are still sectors left to process 1839 * 1840 */ 1841 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1842 1843 /* exit b144 mode */ 1844 iorq->mode = iorq->mode & (~XY_MODE_B144); 1845 1846 if (iorq->sectcnt) { /* more to go! */ 1847 iorq->lasterror = iorq->errno = iopb->errno = 0; 1848 iopb->errs = iopb->done = 0; 1849 iorq->tries = 0; 1850 iopb->scnt = iorq->sectcnt; 1851 iopb->cyl = iorq->blockno / 1852 iorq->xy->sectpercyl; 1853 iopb->head = 1854 (iorq->blockno / iorq->xy->nhead) % 1855 iorq->xy->nhead; 1856 iopb->sect = iorq->blockno % XYFM_BPS; 1857 addr = (u_long) iorq->dbuf; 1858 iopb->dataa = (addr & 0xffff); 1859 iopb->datar = ((addr & 0xff0000) >> 16); 1860 /* will resubit at end */ 1861 continue; 1862 } 1863 } 1864 /* final cleanup, totally done with this request */ 1865 1866 switch (XY_STATE(iorq->mode)) { 1867 case XY_SUB_NORM: 1868 bp = iorq->buf; 1869 if (errs) { 1870 bp->b_error = EIO; 1871 bp->b_flags |= B_ERROR; 1872 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1873 } else { 1874 bp->b_resid = 0; /* done */ 1875 } 1876 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1877 iorq->dmamap->dm_mapsize, 1878 (iorq->buf->b_flags & B_READ) 1879 ? BUS_DMASYNC_POSTREAD 1880 : BUS_DMASYNC_POSTWRITE); 1881 1882 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1883 1884 iorq->xy->xyq.b_actf = bp->b_actf; 1885 disk_unbusy(&iorq->xy->sc_dk, 1886 (bp->b_bcount - bp->b_resid)); 1887 iorq->mode = XY_SUB_FREE; 1888 biodone(bp); 1889 break; 1890 case XY_SUB_WAIT: 1891 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1892 wakeup(iorq); 1893 break; 1894 case XY_SUB_POLL: 1895 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1896 break; 1897 } 1898 } 1899 1900 return (XY_ERR_AOK); 1901 } 1902 1903 /* 1904 * xyc_perror: print error. 1905 * - if still_trying is true: we got an error, retried and got a 1906 * different error. in that case lasterror is the old error, 1907 * and errno is the new one. 1908 * - if still_trying is not true, then if we ever had an error it 1909 * is in lasterror. also, if iorq->errno == 0, then we recovered 1910 * from that error (otherwise iorq->errno == iorq->lasterror). 1911 */ 1912 void 1913 xyc_perror(iorq, iopb, still_trying) 1914 struct xy_iorq *iorq; 1915 struct xy_iopb *iopb; 1916 int still_trying; 1917 1918 { 1919 1920 int error = iorq->lasterror; 1921 1922 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1923 : iorq->xyc->sc_dev.dv_xname); 1924 if (iorq->buf) 1925 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1926 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1927 printf("%s %d/%d/%d: ", 1928 (iopb->com == XYCMD_RD) ? "read" : "write", 1929 iopb->cyl, iopb->head, iopb->sect); 1930 printf("%s", xyc_e2str(error)); 1931 1932 if (still_trying) 1933 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1934 else 1935 if (iorq->errno == 0) 1936 printf(" [recovered in %d tries]", iorq->tries); 1937 1938 printf("\n"); 1939 } 1940 1941 /* 1942 * xyc_error: non-fatal error encountered... recover. 1943 * return AOK if resubmitted, return FAIL if this iopb is done 1944 */ 1945 int 1946 xyc_error(xycsc, iorq, iopb, comm) 1947 struct xyc_softc *xycsc; 1948 struct xy_iorq *iorq; 1949 struct xy_iopb *iopb; 1950 int comm; 1951 1952 { 1953 int errno = iorq->errno; 1954 int erract = xyc_entoact(errno); 1955 int oldmode, advance, i; 1956 1957 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1958 oldmode = iorq->mode; 1959 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1960 /* make xyc_start ignore us */ 1961 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1962 iorq->mode = oldmode; 1963 } 1964 /* check for read/write to a sector in bad144 table if bad: redirect 1965 * request to bad144 area */ 1966 1967 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1968 (iorq->mode & XY_MODE_B144) == 0) { 1969 advance = iorq->sectcnt - iopb->scnt; 1970 XYC_ADVANCE(iorq, advance); 1971 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1972 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1973 iorq->blockno % iorq->xy->nsect)) != -1) { 1974 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1975 * redirect */ 1976 iopb->errno = iopb->done = iopb->errs = 0; 1977 iopb->scnt = 1; 1978 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1979 /* second to last acyl */ 1980 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1981 * standard */ 1982 iopb->head = i / iorq->xy->nhead; 1983 iopb->sect = i % iorq->xy->nhead; 1984 /* will resubmit when we come out of remove_iorq */ 1985 return (XY_ERR_AOK); /* recovered! */ 1986 } 1987 } 1988 1989 /* 1990 * it isn't a bad144 sector, must be real error! see if we can retry 1991 * it? 1992 */ 1993 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1994 xyc_perror(iorq, iopb, 1); /* inform of error state 1995 * change */ 1996 iorq->lasterror = errno; 1997 1998 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1999 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2000 iorq->tries++; 2001 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2002 /* will resubmit at end of remove_iorq */ 2003 return (XY_ERR_AOK); /* recovered! */ 2004 } 2005 2006 /* failed to recover from this error */ 2007 return (XY_ERR_FAIL); 2008 } 2009 2010 /* 2011 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2012 */ 2013 void 2014 xyc_tick(arg) 2015 void *arg; 2016 2017 { 2018 struct xyc_softc *xycsc = arg; 2019 int lcv, s, reset = 0; 2020 2021 /* reduce ttl for each request if one goes to zero, reset xyc */ 2022 s = splbio(); 2023 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2024 if (xycsc->reqs[lcv].mode == 0 || 2025 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2026 continue; 2027 xycsc->reqs[lcv].ttl--; 2028 if (xycsc->reqs[lcv].ttl == 0) 2029 reset = 1; 2030 } 2031 if (reset) { 2032 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2033 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2034 } 2035 splx(s); 2036 2037 /* until next time */ 2038 2039 timeout(xyc_tick, xycsc, XYC_TICKCNT); 2040 } 2041 2042 /* 2043 * xyc_ioctlcmd: this function provides a user level interface to the 2044 * controller via ioctl. this allows "format" programs to be written 2045 * in user code, and is also useful for some debugging. we return 2046 * an error code. called at user priority. 2047 * 2048 * XXX missing a few commands (see the 7053 driver for ideas) 2049 */ 2050 int 2051 xyc_ioctlcmd(xy, dev, xio) 2052 struct xy_softc *xy; 2053 dev_t dev; 2054 struct xd_iocmd *xio; 2055 2056 { 2057 int s, rqno, dummy = 0; 2058 caddr_t dvmabuf = NULL, buf = NULL; 2059 struct xyc_softc *xycsc; 2060 int rseg, error; 2061 bus_dma_segment_t seg; 2062 2063 /* check sanity of requested command */ 2064 2065 switch (xio->cmd) { 2066 2067 case XYCMD_NOP: /* no op: everything should be zero */ 2068 if (xio->subfn || xio->dptr || xio->dlen || 2069 xio->block || xio->sectcnt) 2070 return (EINVAL); 2071 break; 2072 2073 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2074 case XYCMD_WR: 2075 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2076 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2077 return (EINVAL); 2078 break; 2079 2080 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2081 return (EINVAL); 2082 2083 break; 2084 2085 default: 2086 return (EINVAL);/* ??? */ 2087 } 2088 2089 xycsc = xy->parent; 2090 2091 /* create DVMA buffer for request if needed */ 2092 if (xio->dlen) { 2093 error = bus_dmamem_alloc(xycsc->dmatag, xio->dlen, NBPG, 0, 2094 &seg, 1, &rseg, BUS_DMA_WAITOK); 2095 if (error) { 2096 return (error); 2097 } 2098 dvmabuf = (caddr_t)seg.ds_addr; 2099 2100 error = bus_dmamem_map(xycsc->dmatag, &seg, rseg, xio->dlen, 2101 &buf, 2102 BUS_DMA_WAITOK|BUS_DMA_COHERENT); 2103 if (error) { 2104 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2105 return (error); 2106 } 2107 if (xio->cmd == XYCMD_WR) { 2108 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2109 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2110 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2111 return (error); 2112 } 2113 } 2114 } 2115 /* do it! */ 2116 2117 error = 0; 2118 s = splbio(); 2119 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2120 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2121 if (rqno == XY_ERR_FAIL) { 2122 error = EIO; 2123 goto done; 2124 } 2125 xio->errno = xycsc->ciorq->errno; 2126 xio->tries = xycsc->ciorq->tries; 2127 XYC_DONE(xycsc, dummy); 2128 2129 if (xio->cmd == XYCMD_RD) 2130 error = copyout(buf, xio->dptr, xio->dlen); 2131 2132 done: 2133 splx(s); 2134 if (dvmabuf) { 2135 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2136 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2137 } 2138 return (error); 2139 } 2140 2141 /* 2142 * xyc_e2str: convert error code number into an error string 2143 */ 2144 char * 2145 xyc_e2str(no) 2146 int no; 2147 { 2148 switch (no) { 2149 case XY_ERR_FAIL: 2150 return ("Software fatal error"); 2151 case XY_ERR_DERR: 2152 return ("DOUBLE ERROR"); 2153 case XY_ERR_AOK: 2154 return ("Successful completion"); 2155 case XY_ERR_IPEN: 2156 return("Interrupt pending"); 2157 case XY_ERR_BCFL: 2158 return("Busy conflict"); 2159 case XY_ERR_TIMO: 2160 return("Operation timeout"); 2161 case XY_ERR_NHDR: 2162 return("Header not found"); 2163 case XY_ERR_HARD: 2164 return("Hard ECC error"); 2165 case XY_ERR_ICYL: 2166 return("Illegal cylinder address"); 2167 case XY_ERR_ISEC: 2168 return("Illegal sector address"); 2169 case XY_ERR_SMAL: 2170 return("Last sector too small"); 2171 case XY_ERR_SACK: 2172 return("Slave ACK error (non-existent memory)"); 2173 case XY_ERR_CHER: 2174 return("Cylinder and head/header error"); 2175 case XY_ERR_SRTR: 2176 return("Auto-seek retry successful"); 2177 case XY_ERR_WPRO: 2178 return("Write-protect error"); 2179 case XY_ERR_UIMP: 2180 return("Unimplemented command"); 2181 case XY_ERR_DNRY: 2182 return("Drive not ready"); 2183 case XY_ERR_SZER: 2184 return("Sector count zero"); 2185 case XY_ERR_DFLT: 2186 return("Drive faulted"); 2187 case XY_ERR_ISSZ: 2188 return("Illegal sector size"); 2189 case XY_ERR_SLTA: 2190 return("Self test A"); 2191 case XY_ERR_SLTB: 2192 return("Self test B"); 2193 case XY_ERR_SLTC: 2194 return("Self test C"); 2195 case XY_ERR_SOFT: 2196 return("Soft ECC error"); 2197 case XY_ERR_SFOK: 2198 return("Soft ECC error recovered"); 2199 case XY_ERR_IHED: 2200 return("Illegal head"); 2201 case XY_ERR_DSEQ: 2202 return("Disk sequencer error"); 2203 case XY_ERR_SEEK: 2204 return("Seek error"); 2205 default: 2206 return ("Unknown error"); 2207 } 2208 } 2209 2210 int 2211 xyc_entoact(errno) 2212 2213 int errno; 2214 2215 { 2216 switch (errno) { 2217 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2218 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2219 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2220 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2221 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2222 2223 return(XY_ERA_PROG); /* program error ! */ 2224 2225 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2226 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2227 case XY_ERR_SOFT: 2228 2229 return(XY_ERA_HARD); /* hard error, retry */ 2230 2231 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2232 2233 return(XY_ERA_RSET); /* hard error reset */ 2234 2235 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2236 2237 return(XY_ERA_SOFT); /* an FYI error */ 2238 2239 case XY_ERR_WPRO: 2240 2241 return(XY_ERA_WPRO); /* write protect */ 2242 } 2243 2244 return(XY_ERA_PROG); /* ??? */ 2245 } 2246
Indexes created Tue Sep 30 11:09:46 GMT 2025