xy.c revision 1.21
1 /* $NetBSD: xy.c,v 1.21 1998/06/30 04:35:37 mrg Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: &Id: xy.c,v 1.1 1995/09/25 20:35:14 chuck Exp & 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <dev/sun/disklabel.h> 81 82 #include <machine/autoconf.h> 83 #include <machine/dvma.h> 84 85 #include <sun3/dev/xyreg.h> 86 #include <sun3/dev/xyvar.h> 87 #include <sun3/dev/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 /* internals */ 146 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 147 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 148 char *xyc_e2str __P((int)); 149 int xyc_entoact __P((int)); 150 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 151 struct xy_iopb *, int)); 152 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 153 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 154 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 155 int xyc_remove_iorq __P((struct xyc_softc *)); 156 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 157 struct xy_softc *)); 158 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 159 struct xy_softc *, int, u_long, int, 160 caddr_t, struct buf *)); 161 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 162 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 163 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 164 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 165 void xyc_tick __P((void *)); 166 int xyc_unbusy __P((struct xyc *, int)); 167 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 168 169 /* machine interrupt hook */ 170 int xycintr __P((void *)); 171 172 /* bdevsw, cdevsw */ 173 bdev_decl(xy); 174 cdev_decl(xy); 175 176 /* autoconf */ 177 static int xycmatch __P((struct device *, struct cfdata *, void *)); 178 static void xycattach __P((struct device *, struct device *, void *)); 179 static int xyc_print __P((void *, const char *name)); 180 181 static int xymatch __P((struct device *, struct cfdata *, void *)); 182 static void xyattach __P((struct device *, struct device *, void *)); 183 static void xy_init __P((struct xy_softc *)); 184 185 static void xydummystrat __P((struct buf *)); 186 int xygetdisklabel __P((struct xy_softc *, void *)); 187 188 /* 189 * cfattach's: device driver interface to autoconfig 190 */ 191 192 struct cfattach xyc_ca = { 193 sizeof(struct xyc_softc), xycmatch, xycattach 194 }; 195 196 struct cfattach xy_ca = { 197 sizeof(struct xy_softc), xymatch, xyattach 198 }; 199 200 extern struct cfdriver xy_cd; 201 202 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 203 int driveno; /* unit number */ 204 }; 205 206 /* 207 * dkdriver 208 */ 209 210 struct dkdriver xydkdriver = { xystrategy }; 211 212 /* 213 * start: disk label fix code (XXX) 214 */ 215 216 static void *xy_labeldata; 217 218 static void 219 xydummystrat(bp) 220 struct buf *bp; 221 { 222 if (bp->b_bcount != XYFM_BPS) 223 panic("xydummystrat"); 224 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 225 bp->b_flags |= B_DONE; 226 bp->b_flags &= ~B_BUSY; 227 } 228 229 int 230 xygetdisklabel(xy, b) 231 struct xy_softc *xy; 232 void *b; 233 { 234 char *err; 235 struct sun_disklabel *sdl; 236 237 /* We already have the label data in `b'; setup for dummy strategy */ 238 xy_labeldata = b; 239 240 /* Required parameter for readdisklabel() */ 241 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 242 243 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 244 xydummystrat, 245 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 246 if (err) { 247 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 248 return(XY_ERR_FAIL); 249 } 250 251 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 252 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 253 if (sdl->sl_magic == SUN_DKMAGIC) 254 xy->pcyl = sdl->sl_pcyl; 255 else { 256 printf("%s: WARNING: no `pcyl' in disk label.\n", 257 xy->sc_dev.dv_xname); 258 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 259 xy->sc_dk.dk_label->d_acylinders; 260 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 261 xy->sc_dev.dv_xname, xy->pcyl); 262 } 263 264 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 265 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 266 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 267 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 268 xy->sectpercyl = xy->nhead * xy->nsect; 269 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 270 * sun->bsd */ 271 return(XY_ERR_AOK); 272 } 273 274 /* 275 * end: disk label fix code (XXX) 276 */ 277 278 /* 279 * a u t o c o n f i g f u n c t i o n s 280 */ 281 282 /* 283 * xycmatch: determine if xyc is present or not. we do a 284 * soft reset to detect the xyc. 285 */ 286 static int 287 xycmatch(parent, cf, aux) 288 struct device *parent; 289 struct cfdata *cf; 290 void *aux; 291 { 292 struct confargs *ca = aux; 293 294 /* No default VME address. */ 295 if (ca->ca_paddr == -1) 296 return (0); 297 298 /* Make sure something is there... */ 299 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 300 return (0); 301 302 /* Default interrupt priority. */ 303 if (ca->ca_intpri == -1) 304 ca->ca_intpri = 2; 305 306 return (1); 307 } 308 309 /* 310 * xycattach: attach controller 311 */ 312 static void 313 xycattach(parent, self, aux) 314 struct device *parent, *self; 315 void *aux; 316 { 317 struct xyc_softc *xyc = (void *) self; 318 struct confargs *ca = aux; 319 struct xyc_attach_args xa; 320 int lcv, err, res, pbsz; 321 void *tmp, *tmp2; 322 u_long ultmp; 323 324 /* get addressing and intr level stuff from autoconfig and load it 325 * into our xyc_softc. */ 326 327 xyc->xyc = (struct xyc *) 328 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 329 xyc->bustype = ca->ca_bustype; 330 xyc->ipl = ca->ca_intpri; 331 xyc->vector = ca->ca_intvec; 332 xyc->no_ols = 0; /* XXX should be from config */ 333 334 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 335 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 336 337 /* 338 * allocate and zero buffers 339 * check boundaries of the KVA's ... all IOPBs must reside in 340 * the same 64K region. 341 */ 342 343 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 344 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 345 ultmp = (u_long) tmp; 346 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 347 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 348 dvma_free(tmp2, pbsz); 349 ultmp = (u_long) tmp; 350 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 351 printf("%s: can't alloc IOPB mem in 64K\n", 352 xyc->sc_dev.dv_xname); 353 return; 354 } 355 } 356 bzero(tmp, pbsz); 357 xyc->iopbase = tmp; 358 xyc->dvmaiopb = (struct xy_iopb *) 359 dvma_kvtopa(xyc->iopbase, xyc->bustype); 360 xyc->reqs = (struct xy_iorq *) 361 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 362 if (xyc->reqs == NULL) 363 panic("xyc malloc"); 364 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 365 366 /* 367 * init iorq to iopb pointers, and non-zero fields in the 368 * iopb which never change. 369 */ 370 371 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 372 xyc->xy_chain[lcv] = NULL; 373 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 374 xyc->iopbase[lcv].asr = 1; /* always the same */ 375 xyc->iopbase[lcv].eef = 1; /* always the same */ 376 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 377 xyc->iopbase[lcv].aud = 1; /* always the same */ 378 xyc->iopbase[lcv].relo = 1; /* always the same */ 379 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 380 } 381 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 382 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 383 xyc->xy_hand = 0; 384 385 /* read controller parameters and insure we have a 450/451 */ 386 387 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 388 res = xyc->ciopb->ctyp; 389 XYC_DONE(xyc, err); 390 if (res != XYCT_450) { 391 if (err) 392 printf(": %s: ", xyc_e2str(err)); 393 printf(": doesn't identify as a 450/451\n"); 394 return; 395 } 396 printf(": Xylogics 450/451"); 397 if (xyc->no_ols) 398 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 399 printf("\n"); 400 if (err) { 401 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 402 xyc_e2str(err)); 403 return; 404 } 405 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 406 printf("%s: 24 bit addressing turned off\n", 407 xyc->sc_dev.dv_xname); 408 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 409 printf("to enable 24 bit mode and this driver\n"); 410 return; 411 } 412 413 /* link in interrupt with higher level software */ 414 isr_add_vectored(xycintr, (void *)xyc, 415 ca->ca_intpri, ca->ca_intvec); 416 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 417 418 /* now we must look for disks using autoconfig */ 419 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 420 (void) config_found(self, (void *) &xa, xyc_print); 421 422 /* start the watchdog clock */ 423 timeout(xyc_tick, xyc, XYC_TICKCNT); 424 } 425 426 static int 427 xyc_print(aux, name) 428 void *aux; 429 const char *name; 430 { 431 struct xyc_attach_args *xa = aux; 432 433 if (name != NULL) 434 printf("%s: ", name); 435 436 if (xa->driveno != -1) 437 printf(" drive %d", xa->driveno); 438 439 return UNCONF; 440 } 441 442 /* 443 * xymatch: probe for disk. 444 * 445 * note: we almost always say disk is present. this allows us to 446 * spin up and configure a disk after the system is booted (we can 447 * call xyattach!). Also, wire down the relationship between the 448 * xy* and xyc* devices, to simplify boot device identification. 449 */ 450 static int 451 xymatch(parent, cf, aux) 452 struct device *parent; 453 struct cfdata *cf; 454 void *aux; 455 { 456 struct xyc_attach_args *xa = aux; 457 int xy_unit; 458 459 /* Match only on the "wired-down" controller+disk. */ 460 xy_unit = parent->dv_unit * 2 + xa->driveno; 461 if (cf->cf_unit != xy_unit) 462 return (0); 463 464 return (1); 465 } 466 467 /* 468 * xyattach: attach a disk. 469 */ 470 static void 471 xyattach(parent, self, aux) 472 struct device *parent, *self; 473 void *aux; 474 { 475 struct xy_softc *xy = (void *) self; 476 struct xyc_softc *xyc = (void *) parent; 477 struct xyc_attach_args *xa = aux; 478 479 printf("\n"); 480 481 /* 482 * Always re-initialize the disk structure. We want statistics 483 * to start with a clean slate. 484 */ 485 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 486 xy->sc_dk.dk_driver = &xydkdriver; 487 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 488 489 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 490 xy->flags = 0; 491 xy->parent = xyc; 492 493 /* init queue of waiting bufs */ 494 xy->xyq.b_active = 0; 495 xy->xyq.b_actf = 0; 496 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 497 xy->xyrq = &xyc->reqs[xa->driveno]; 498 499 xy->xy_drive = xa->driveno; 500 xyc->sc_drives[xa->driveno] = xy; 501 502 /* Do init work common to attach and open. */ 503 xy_init(xy); 504 dk_establish(&xy->sc_dk, &xy->sc_dev); 505 } 506 507 /* 508 * end of autoconfig functions 509 */ 510 511 /* 512 * Initialize a disk. This can be called from both autoconf and 513 * also from xyopen/xystrategy. 514 */ 515 static void 516 xy_init(xy) 517 struct xy_softc *xy; 518 { 519 struct xyc_softc *xyc; 520 struct dkbad *dkb; 521 void *dvmabuf; 522 int err, spt, mb, blk, lcv, fullmode, newstate; 523 extern int cold; 524 525 xyc = xy->parent; 526 xy->state = XY_DRIVE_ATTACHING; 527 newstate = XY_DRIVE_UNKNOWN; 528 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 529 dvmabuf = dvma_malloc(XYFM_BPS); 530 531 /* first try and reset the drive */ 532 533 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 534 XYC_DONE(xyc, err); 535 if (err == XY_ERR_DNRY) { 536 printf("%s: drive %d: off-line\n", 537 xy->sc_dev.dv_xname, xy->xy_drive); 538 goto done; 539 } 540 if (err) { 541 printf("%s: ERROR 0x%02x (%s)\n", 542 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 543 goto done; 544 } 545 printf("%s: drive %d ready", 546 xy->sc_dev.dv_xname, xy->xy_drive); 547 548 /* 549 * now set drive parameters (to semi-bogus values) so we can read the 550 * disk label. 551 */ 552 xy->pcyl = xy->ncyl = 1; 553 xy->acyl = 0; 554 xy->nhead = 1; 555 xy->nsect = 1; 556 xy->sectpercyl = 1; 557 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 558 xy->dkb.bt_bad[lcv].bt_cyl = 559 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 560 561 /* read disk label */ 562 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 563 xy->drive_type++) { 564 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 565 dvmabuf, fullmode); 566 XYC_DONE(xyc, err); 567 if (err == XY_ERR_AOK) break; 568 } 569 570 if (err != XY_ERR_AOK) { 571 printf("%s: reading disk label failed: %s\n", 572 xy->sc_dev.dv_xname, xyc_e2str(err)); 573 goto done; 574 } 575 printf("%s: drive type %d\n", 576 xy->sc_dev.dv_xname, xy->drive_type); 577 578 newstate = XY_DRIVE_NOLABEL; 579 580 xy->hw_spt = spt = 0; /* XXX needed ? */ 581 /* Attach the disk: must be before getdisklabel to malloc label */ 582 disk_attach(&xy->sc_dk); 583 584 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 585 goto done; 586 587 /* inform the user of what is up */ 588 printf("%s: <%s>, pcyl %d\n", 589 xy->sc_dev.dv_xname, 590 (char *)dvmabuf, xy->pcyl); 591 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 592 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 593 xy->sc_dev.dv_xname, mb, 594 xy->ncyl, xy->nhead, xy->nsect); 595 596 /* 597 * 450/451 stupidity: the drive type is encoded into the format 598 * of the disk. the drive type in the IOPB must match the drive 599 * type in the format, or you will not be able to do I/O to the 600 * disk (you get header not found errors). if you have two drives 601 * of different sizes that have the same drive type in their 602 * formatting then you are out of luck. 603 * 604 * this problem was corrected in the 753/7053. 605 */ 606 607 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 608 struct xy_softc *oxy; 609 610 oxy = xyc->sc_drives[lcv]; 611 if (oxy == NULL || oxy == xy) continue; 612 if (oxy->drive_type != xy->drive_type) continue; 613 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 614 xy->nhead != oxy->nhead) { 615 printf("%s: %s and %s must be the same size!\n", 616 xyc->sc_dev.dv_xname, 617 xy ->sc_dev.dv_xname, 618 oxy->sc_dev.dv_xname); 619 panic("xy drive size mismatch"); 620 } 621 } 622 623 624 /* now set the real drive parameters! */ 625 blk = (xy->nsect - 1) + 626 ((xy->nhead - 1) * xy->nsect) + 627 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 628 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 629 XYC_DONE(xyc, err); 630 if (err) { 631 printf("%s: write drive size failed: %s\n", 632 xy->sc_dev.dv_xname, xyc_e2str(err)); 633 goto done; 634 } 635 newstate = XY_DRIVE_ONLINE; 636 637 /* 638 * read bad144 table. this table resides on the first sector of the 639 * last track of the disk (i.e. second cyl of "acyl" area). 640 */ 641 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 642 /* last cyl */ 643 (xy->nhead - 1) * xy->nsect; /* last head */ 644 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 645 dvmabuf, fullmode); 646 XYC_DONE(xyc, err); 647 if (err) { 648 printf("%s: reading bad144 failed: %s\n", 649 xy->sc_dev.dv_xname, xyc_e2str(err)); 650 goto done; 651 } 652 653 /* check dkbad for sanity */ 654 dkb = (struct dkbad *) dvmabuf; 655 for (lcv = 0; lcv < 126; lcv++) { 656 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 657 dkb->bt_bad[lcv].bt_cyl == 0) && 658 dkb->bt_bad[lcv].bt_trksec == 0xffff) 659 continue; /* blank */ 660 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 661 break; 662 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 663 break; 664 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 665 break; 666 } 667 if (lcv != 126) { 668 printf("%s: warning: invalid bad144 sector!\n", 669 xy->sc_dev.dv_xname); 670 } else { 671 bcopy(dvmabuf, &xy->dkb, XYFM_BPS); 672 } 673 674 done: 675 xy->state = newstate; 676 dvma_free(dvmabuf, XYFM_BPS); 677 } 678 679 /* 680 * { b , c } d e v s w f u n c t i o n s 681 */ 682 683 /* 684 * xyclose: close device 685 */ 686 int 687 xyclose(dev, flag, fmt, p) 688 dev_t dev; 689 int flag, fmt; 690 struct proc *p; 691 { 692 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 693 int part = DISKPART(dev); 694 695 /* clear mask bits */ 696 697 switch (fmt) { 698 case S_IFCHR: 699 xy->sc_dk.dk_copenmask &= ~(1 << part); 700 break; 701 case S_IFBLK: 702 xy->sc_dk.dk_bopenmask &= ~(1 << part); 703 break; 704 } 705 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 706 707 return 0; 708 } 709 710 /* 711 * xydump: crash dump system 712 */ 713 int 714 xydump(dev, blkno, va, sz) 715 dev_t dev; 716 daddr_t blkno; 717 caddr_t va; 718 size_t sz; 719 { 720 int unit, part; 721 struct xy_softc *xy; 722 723 unit = DISKUNIT(dev); 724 if (unit >= xy_cd.cd_ndevs) 725 return ENXIO; 726 part = DISKPART(dev); 727 728 xy = xy_cd.cd_devs[unit]; 729 730 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 731 'a' + part); 732 733 return ENXIO; 734 735 /* outline: globals: "dumplo" == sector number of partition to start 736 * dump at (convert to physical sector with partition table) 737 * "dumpsize" == size of dump in clicks "physmem" == size of physical 738 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 739 * physmem) 740 * 741 * dump a copy of physical memory to the dump device starting at sector 742 * "dumplo" in the swap partition (make sure > 0). map in pages as 743 * we go. use polled I/O. 744 * 745 * XXX how to handle NON_CONTIG? 746 */ 747 } 748 749 /* 750 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 751 */ 752 int 753 xyioctl(dev, command, addr, flag, p) 754 dev_t dev; 755 u_long command; 756 caddr_t addr; 757 int flag; 758 struct proc *p; 759 760 { 761 struct xy_softc *xy; 762 struct xd_iocmd *xio; 763 int error, s, unit; 764 765 unit = DISKUNIT(dev); 766 767 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 768 return (ENXIO); 769 770 /* switch on ioctl type */ 771 772 switch (command) { 773 case DIOCSBAD: /* set bad144 info */ 774 if ((flag & FWRITE) == 0) 775 return EBADF; 776 s = splbio(); 777 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 778 splx(s); 779 return 0; 780 781 case DIOCGDINFO: /* get disk label */ 782 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 783 return 0; 784 785 case DIOCGPART: /* get partition info */ 786 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 787 ((struct partinfo *) addr)->part = 788 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 789 return 0; 790 791 case DIOCSDINFO: /* set disk label */ 792 if ((flag & FWRITE) == 0) 793 return EBADF; 794 error = setdisklabel(xy->sc_dk.dk_label, 795 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 796 xy->sc_dk.dk_cpulabel); 797 if (error == 0) { 798 if (xy->state == XY_DRIVE_NOLABEL) 799 xy->state = XY_DRIVE_ONLINE; 800 } 801 return error; 802 803 case DIOCWLABEL: /* change write status of disk label */ 804 if ((flag & FWRITE) == 0) 805 return EBADF; 806 if (*(int *) addr) 807 xy->flags |= XY_WLABEL; 808 else 809 xy->flags &= ~XY_WLABEL; 810 return 0; 811 812 case DIOCWDINFO: /* write disk label */ 813 if ((flag & FWRITE) == 0) 814 return EBADF; 815 error = setdisklabel(xy->sc_dk.dk_label, 816 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 817 xy->sc_dk.dk_cpulabel); 818 if (error == 0) { 819 if (xy->state == XY_DRIVE_NOLABEL) 820 xy->state = XY_DRIVE_ONLINE; 821 822 /* Simulate opening partition 0 so write succeeds. */ 823 xy->sc_dk.dk_openmask |= (1 << 0); 824 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 825 xystrategy, xy->sc_dk.dk_label, 826 xy->sc_dk.dk_cpulabel); 827 xy->sc_dk.dk_openmask = 828 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 829 } 830 return error; 831 832 case DIOSXDCMD: 833 xio = (struct xd_iocmd *) addr; 834 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 835 return (error); 836 return (xyc_ioctlcmd(xy, dev, xio)); 837 838 default: 839 return ENOTTY; 840 } 841 } 842 843 /* 844 * xyopen: open drive 845 */ 846 int 847 xyopen(dev, flag, fmt, p) 848 dev_t dev; 849 int flag, fmt; 850 struct proc *p; 851 { 852 int err, unit, part, s; 853 struct xy_softc *xy; 854 855 /* first, could it be a valid target? */ 856 unit = DISKUNIT(dev); 857 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 858 return (ENXIO); 859 part = DISKPART(dev); 860 err = 0; 861 862 /* 863 * If some other processing is doing init, sleep. 864 */ 865 s = splbio(); 866 while (xy->state == XY_DRIVE_ATTACHING) { 867 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 868 err = EINTR; 869 goto done; 870 } 871 } 872 /* Do we need to init the drive? */ 873 if (xy->state == XY_DRIVE_UNKNOWN) { 874 xy_init(xy); 875 wakeup(&xy->state); 876 } 877 /* Was the init successful? */ 878 if (xy->state == XY_DRIVE_UNKNOWN) { 879 err = EIO; 880 goto done; 881 } 882 883 /* check for partition */ 884 if (part != RAW_PART && 885 (part >= xy->sc_dk.dk_label->d_npartitions || 886 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 887 err = ENXIO; 888 goto done; 889 } 890 891 /* set open masks */ 892 switch (fmt) { 893 case S_IFCHR: 894 xy->sc_dk.dk_copenmask |= (1 << part); 895 break; 896 case S_IFBLK: 897 xy->sc_dk.dk_bopenmask |= (1 << part); 898 break; 899 } 900 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 901 902 done: 903 splx(s); 904 return (err); 905 } 906 907 int 908 xyread(dev, uio, flags) 909 dev_t dev; 910 struct uio *uio; 911 int flags; 912 { 913 914 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 915 } 916 917 int 918 xywrite(dev, uio, flags) 919 dev_t dev; 920 struct uio *uio; 921 int flags; 922 { 923 924 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 925 } 926 927 928 /* 929 * xysize: return size of a partition for a dump 930 */ 931 932 int 933 xysize(dev) 934 dev_t dev; 935 936 { 937 struct xy_softc *xysc; 938 int unit, part, size, omask; 939 940 /* valid unit? */ 941 unit = DISKUNIT(dev); 942 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 943 return (-1); 944 945 part = DISKPART(dev); 946 omask = xysc->sc_dk.dk_openmask & (1 << part); 947 948 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 949 return (-1); 950 951 /* do it */ 952 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 953 size = -1; /* only give valid size for swap partitions */ 954 else 955 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 956 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 957 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 958 return (-1); 959 return (size); 960 } 961 962 /* 963 * xystrategy: buffering system interface to xy. 964 */ 965 void 966 xystrategy(bp) 967 struct buf *bp; 968 969 { 970 struct xy_softc *xy; 971 int s, unit; 972 973 unit = DISKUNIT(bp->b_dev); 974 975 /* check for live device */ 976 977 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 978 bp->b_blkno < 0 || 979 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 980 bp->b_error = EINVAL; 981 goto bad; 982 } 983 984 /* There should always be an open first. */ 985 if (xy->state == XY_DRIVE_UNKNOWN) { 986 bp->b_error = EIO; 987 goto bad; 988 } 989 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 990 /* no I/O to unlabeled disks, unless raw partition */ 991 bp->b_error = EIO; 992 goto bad; 993 } 994 /* short circuit zero length request */ 995 996 if (bp->b_bcount == 0) 997 goto done; 998 999 /* check bounds with label (disksubr.c). Determine the size of the 1000 * transfer, and make sure it is within the boundaries of the 1001 * partition. Adjust transfer if needed, and signal errors or early 1002 * completion. */ 1003 1004 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1005 (xy->flags & XY_WLABEL) != 0) <= 0) 1006 goto done; 1007 1008 /* 1009 * now we know we have a valid buf structure that we need to do I/O 1010 * on. 1011 */ 1012 1013 s = splbio(); /* protect the queues */ 1014 1015 disksort(&xy->xyq, bp); 1016 1017 /* start 'em up */ 1018 1019 xyc_start(xy->parent, NULL); 1020 1021 /* done! */ 1022 1023 splx(s); 1024 return; 1025 1026 bad: /* tells upper layers we have an error */ 1027 bp->b_flags |= B_ERROR; 1028 done: /* tells upper layers we are done with this 1029 * buf */ 1030 bp->b_resid = bp->b_bcount; 1031 biodone(bp); 1032 } 1033 /* 1034 * end of {b,c}devsw functions 1035 */ 1036 1037 /* 1038 * i n t e r r u p t f u n c t i o n 1039 * 1040 * xycintr: hardware interrupt. 1041 */ 1042 int 1043 xycintr(v) 1044 void *v; 1045 1046 { 1047 struct xyc_softc *xycsc = v; 1048 1049 /* kick the event counter */ 1050 xycsc->sc_intrcnt.ev_count++; 1051 1052 /* remove as many done IOPBs as possible */ 1053 xyc_remove_iorq(xycsc); 1054 1055 /* start any iorq's already waiting */ 1056 xyc_start(xycsc, NULL); 1057 1058 return (1); 1059 } 1060 /* 1061 * end of interrupt function 1062 */ 1063 1064 /* 1065 * i n t e r n a l f u n c t i o n s 1066 */ 1067 1068 /* 1069 * xyc_rqinit: fill out the fields of an I/O request 1070 */ 1071 1072 inline void 1073 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1074 struct xy_iorq *rq; 1075 struct xyc_softc *xyc; 1076 struct xy_softc *xy; 1077 int md; 1078 u_long blk; 1079 int cnt; 1080 caddr_t db; 1081 struct buf *bp; 1082 { 1083 rq->xyc = xyc; 1084 rq->xy = xy; 1085 rq->ttl = XYC_MAXTTL + 10; 1086 rq->mode = md; 1087 rq->tries = rq->errno = rq->lasterror = 0; 1088 rq->blockno = blk; 1089 rq->sectcnt = cnt; 1090 rq->dbuf = rq->dbufbase = db; 1091 rq->buf = bp; 1092 } 1093 1094 /* 1095 * xyc_rqtopb: load up an IOPB based on an iorq 1096 */ 1097 1098 void 1099 xyc_rqtopb(iorq, iopb, cmd, subfun) 1100 struct xy_iorq *iorq; 1101 struct xy_iopb *iopb; 1102 int cmd, subfun; 1103 1104 { 1105 u_long block, dp; 1106 1107 /* normal IOPB case, standard stuff */ 1108 1109 /* chain bit handled later */ 1110 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1111 iopb->com = cmd; 1112 iopb->errno = 0; 1113 iopb->errs = 0; 1114 iopb->done = 0; 1115 if (iorq->xy) { 1116 iopb->unit = iorq->xy->xy_drive; 1117 iopb->dt = iorq->xy->drive_type; 1118 } else { 1119 iopb->unit = 0; 1120 iopb->dt = 0; 1121 } 1122 block = iorq->blockno; 1123 if (iorq->xy == NULL || block == 0) { 1124 iopb->sect = iopb->head = iopb->cyl = 0; 1125 } else { 1126 iopb->sect = block % iorq->xy->nsect; 1127 block = block / iorq->xy->nsect; 1128 iopb->head = block % iorq->xy->nhead; 1129 block = block / iorq->xy->nhead; 1130 iopb->cyl = block; 1131 } 1132 iopb->scnt = iorq->sectcnt; 1133 if (iorq->dbuf == NULL) { 1134 iopb->dataa = 0; 1135 iopb->datar = 0; 1136 } else { 1137 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1138 iopb->dataa = (dp & 0xffff); 1139 iopb->datar = ((dp & 0xff0000) >> 16); 1140 } 1141 iopb->subfn = subfun; 1142 } 1143 1144 1145 /* 1146 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1147 */ 1148 1149 int 1150 xyc_unbusy(xyc, del) 1151 1152 struct xyc *xyc; 1153 int del; 1154 1155 { 1156 while (del-- > 0) { 1157 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1158 break; 1159 DELAY(1); 1160 } 1161 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1162 } 1163 1164 /* 1165 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1166 * note that NORM requests are handled seperately. 1167 */ 1168 int 1169 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1170 struct xyc_softc *xycsc; 1171 int cmd, subfn, unit, block, scnt; 1172 char *dptr; 1173 int fullmode; 1174 { 1175 struct xy_iorq *iorq = xycsc->ciorq; 1176 struct xy_iopb *iopb = xycsc->ciopb; 1177 int submode = XY_STATE(fullmode); 1178 1179 /* 1180 * is someone else using the control iopq wait for it if we can 1181 */ 1182 start: 1183 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1184 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1185 return(XY_ERR_FAIL); 1186 goto start; 1187 } 1188 1189 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1190 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1191 iorq->mode = XY_SUB_FREE; 1192 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1193 } 1194 1195 /* init iorq/iopb */ 1196 1197 xyc_rqinit(iorq, xycsc, 1198 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1199 fullmode, block, scnt, dptr, NULL); 1200 1201 /* load IOPB from iorq */ 1202 1203 xyc_rqtopb(iorq, iopb, cmd, subfn); 1204 1205 /* submit it for processing */ 1206 1207 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1208 1209 return(XY_ERR_AOK); 1210 } 1211 1212 /* 1213 * xyc_startbuf 1214 * start a buffer for running 1215 */ 1216 1217 int 1218 xyc_startbuf(xycsc, xysc, bp) 1219 struct xyc_softc *xycsc; 1220 struct xy_softc *xysc; 1221 struct buf *bp; 1222 1223 { 1224 int partno; 1225 struct xy_iorq *iorq; 1226 struct xy_iopb *iopb; 1227 u_long block; 1228 caddr_t dbuf; 1229 1230 iorq = xysc->xyrq; 1231 iopb = iorq->iopb; 1232 1233 /* get buf */ 1234 1235 if (bp == NULL) 1236 panic("xyc_startbuf null buf"); 1237 1238 partno = DISKPART(bp->b_dev); 1239 #ifdef XYC_DEBUG 1240 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1241 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1242 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1243 bp->b_bcount, bp->b_data); 1244 #endif 1245 1246 /* 1247 * load request. we have to calculate the correct block number based 1248 * on partition info. 1249 * 1250 * also, note that there are two kinds of buf structures, those with 1251 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1252 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1253 * buffer which has already been mapped into DVMA space. (Not on sun3) 1254 * However, if B_PHYS is not set, then the buffer is a normal system 1255 * buffer which does *not* live in DVMA space. In that case we call 1256 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1257 * 1258 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1259 * as mapped into DVMA space, where as the bp->b_data points to its 1260 * non-DVMA mapping. 1261 * 1262 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1263 * into dvma space, only that it was remapped into the kernel. 1264 * We ALWAYS have to remap the kernel buf into DVMA space. 1265 * (It is done inexpensively, using whole segments!) 1266 */ 1267 1268 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1269 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1270 1271 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1272 if (dbuf == NULL) { /* out of DVMA space */ 1273 printf("%s: warning: out of DVMA space\n", 1274 xycsc->sc_dev.dv_xname); 1275 return (XY_ERR_FAIL); /* XXX: need some sort of 1276 * call-back scheme here? */ 1277 } 1278 1279 /* init iorq and load iopb from it */ 1280 1281 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1282 bp->b_bcount / XYFM_BPS, dbuf, bp); 1283 1284 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1285 1286 /* Instrumentation. */ 1287 disk_busy(&xysc->sc_dk); 1288 1289 return (XY_ERR_AOK); 1290 } 1291 1292 1293 /* 1294 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1295 * if ok. if it fail returns an error code. type is XY_SUB_*. 1296 * 1297 * note: caller frees iorq in all cases except NORM 1298 * 1299 * return value: 1300 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1301 * WAIT: XY_AOK (success), <error-code> (failed) 1302 * POLL: <same as WAIT> 1303 * NOQ : <same as NORM> 1304 * 1305 * there are three sources for i/o requests: 1306 * [1] xystrategy: normal block I/O, using "struct buf" system. 1307 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1308 * [3] open/ioctl: these are I/O requests done in the context of a process, 1309 * and the process should block until they are done. 1310 * 1311 * software state is stored in the iorq structure. each iorq has an 1312 * iopb structure. the hardware understands the iopb structure. 1313 * every command must go through an iopb. a 450 handles one iopb at a 1314 * time, where as a 451 can take them in chains. [the 450 claims it 1315 * can handle chains, but is appears to be buggy...] iopb are allocated 1316 * in DVMA space at boot up time. each disk gets one iopb, and the 1317 * controller gets one (for POLL and WAIT commands). what happens if 1318 * the iopb is busy? for i/o type [1], the buffers are queued at the 1319 * "buff" layer and * picked up later by the interrupt routine. for case 1320 * [2] we can only be blocked if there is a WAIT type I/O request being 1321 * run. since this can only happen when we are crashing, we wait a sec 1322 * and then steal the IOPB. for case [3] the process can sleep 1323 * on the iorq free list until some iopbs are avaliable. 1324 */ 1325 1326 1327 int 1328 xyc_submit_iorq(xycsc, iorq, type) 1329 struct xyc_softc *xycsc; 1330 struct xy_iorq *iorq; 1331 int type; 1332 1333 { 1334 struct xy_iopb *iopb; 1335 u_long iopbaddr; 1336 1337 #ifdef XYC_DEBUG 1338 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1339 xycsc->sc_dev.dv_xname, iorq, type); 1340 #endif 1341 1342 /* first check and see if controller is busy */ 1343 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1344 #ifdef XYC_DEBUG 1345 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1346 #endif 1347 if (type == XY_SUB_NOQ) 1348 return (XY_ERR_FAIL); /* failed */ 1349 switch (type) { 1350 case XY_SUB_NORM: 1351 return XY_ERR_AOK; /* success */ 1352 case XY_SUB_WAIT: 1353 while (iorq->iopb->done == 0) { 1354 sleep(iorq, PRIBIO); 1355 } 1356 return (iorq->errno); 1357 case XY_SUB_POLL: /* steal controller */ 1358 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1359 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1360 panic("xyc_submit_iorq: stuck xyc"); 1361 printf("%s: stole controller\n", 1362 xycsc->sc_dev.dv_xname); 1363 break; 1364 default: 1365 panic("xyc_submit_iorq adding"); 1366 } 1367 } 1368 1369 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1370 if (iopb == NULL) { /* nothing doing? */ 1371 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1372 return(XY_ERR_AOK); 1373 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1374 } 1375 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1376 1377 XYC_GO(xycsc->xyc, iopbaddr); 1378 1379 /* command now running, wrap it up */ 1380 switch (type) { 1381 case XY_SUB_NORM: 1382 case XY_SUB_NOQ: 1383 return (XY_ERR_AOK); /* success */ 1384 case XY_SUB_WAIT: 1385 while (iorq->iopb->done == 0) { 1386 sleep(iorq, PRIBIO); 1387 } 1388 return (iorq->errno); 1389 case XY_SUB_POLL: 1390 return (xyc_piodriver(xycsc, iorq)); 1391 default: 1392 panic("xyc_submit_iorq wrap up"); 1393 } 1394 panic("xyc_submit_iorq"); 1395 return 0; /* not reached */ 1396 } 1397 1398 1399 /* 1400 * xyc_chain: build a chain. return dvma address of first element in 1401 * the chain. iorq != NULL: means we only want that item on the chain. 1402 */ 1403 1404 struct xy_iopb * 1405 xyc_chain(xycsc, iorq) 1406 struct xyc_softc *xycsc; 1407 struct xy_iorq *iorq; 1408 { 1409 int togo, chain, hand; 1410 struct xy_iopb *iopb, *prev_iopb; 1411 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1412 1413 /* 1414 * promote control IOPB to the top 1415 */ 1416 if (iorq == NULL) { 1417 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1418 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1419 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1420 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1421 } 1422 /* 1423 * special case: if iorq != NULL then we have a POLL or WAIT request. 1424 * we let these take priority and do them first. 1425 */ 1426 if (iorq) { 1427 xycsc->xy_chain[0] = iorq; 1428 iorq->iopb->chen = 0; 1429 return(iorq->iopb); 1430 } 1431 1432 /* 1433 * NORM case: do round robin and maybe chain (if allowed and possible) 1434 */ 1435 1436 chain = 0; 1437 hand = xycsc->xy_hand; 1438 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1439 1440 for (togo = XYC_MAXIOPB ; 1441 togo > 0 ; 1442 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1443 { 1444 1445 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1446 xycsc->iopbase[hand].done) 1447 continue; /* not ready-for-i/o */ 1448 1449 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1450 iopb = xycsc->xy_chain[chain]->iopb; 1451 iopb->chen = 0; 1452 if (chain != 0) { /* adding a link to a chain? */ 1453 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1454 prev_iopb->chen = 1; 1455 prev_iopb->nxtiopb = 0xffff & 1456 dvma_kvtopa(iopb, xycsc->bustype); 1457 } else { /* head of chain */ 1458 iorq = xycsc->xy_chain[chain]; 1459 } 1460 chain++; 1461 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1462 } 1463 return(iorq ? iorq->iopb : NULL); 1464 } 1465 1466 /* 1467 * xyc_piodriver 1468 * 1469 * programmed i/o driver. this function takes over the computer 1470 * and drains off the polled i/o request. it returns the status of the iorq 1471 * the caller is interesting in. 1472 */ 1473 int 1474 xyc_piodriver(xycsc, iorq) 1475 struct xyc_softc *xycsc; 1476 struct xy_iorq *iorq; 1477 1478 { 1479 int nreset = 0; 1480 int retval = 0; 1481 u_long res; 1482 1483 #ifdef XYC_DEBUG 1484 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1485 #endif 1486 1487 while (iorq->iopb->done == 0) { 1488 1489 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1490 1491 /* we expect some progress soon */ 1492 if (res == XY_ERR_FAIL && nreset >= 2) { 1493 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1494 #ifdef XYC_DEBUG 1495 printf("xyc_piodriver: timeout\n"); 1496 #endif 1497 return (XY_ERR_FAIL); 1498 } 1499 if (res == XY_ERR_FAIL) { 1500 if (xyc_reset(xycsc, 0, 1501 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1502 XY_ERR_FAIL, 1503 0) == XY_ERR_FAIL) 1504 return (XY_ERR_FAIL); /* flushes all but POLL 1505 * requests, resets */ 1506 continue; 1507 } 1508 1509 xyc_remove_iorq(xycsc); /* may resubmit request */ 1510 1511 if (iorq->iopb->done == 0) 1512 xyc_start(xycsc, iorq); 1513 } 1514 1515 /* get return value */ 1516 1517 retval = iorq->errno; 1518 1519 #ifdef XYC_DEBUG 1520 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1521 iorq->errno, xyc_e2str(iorq->errno)); 1522 #endif 1523 1524 /* start up any bufs that have queued */ 1525 1526 xyc_start(xycsc, NULL); 1527 1528 return (retval); 1529 } 1530 1531 /* 1532 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1533 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1534 */ 1535 void 1536 xyc_xyreset(xycsc, xysc) 1537 struct xyc_softc *xycsc; 1538 struct xy_softc *xysc; 1539 1540 { 1541 struct xy_iopb tmpiopb; 1542 u_long addr; 1543 int del; 1544 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1545 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1546 xycsc->ciopb->ien = 0; 1547 xycsc->ciopb->com = XYCMD_RST; 1548 xycsc->ciopb->unit = xysc->xy_drive; 1549 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1550 1551 XYC_GO(xycsc->xyc, addr); 1552 1553 del = XYC_RESETUSEC; 1554 while (del > 0) { 1555 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1556 DELAY(1); 1557 del--; 1558 } 1559 1560 if (del <= 0 || xycsc->ciopb->errs) { 1561 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1562 xyc_e2str(xycsc->ciopb->errno)); 1563 del = xycsc->xyc->xyc_rsetup; 1564 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1565 panic("xyc_reset"); 1566 } else { 1567 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1568 } 1569 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1570 } 1571 1572 1573 /* 1574 * xyc_reset: reset everything: requests are marked as errors except 1575 * a polled request (which is resubmitted) 1576 */ 1577 int 1578 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1579 struct xyc_softc *xycsc; 1580 int quiet, error; 1581 struct xy_iorq *blastmode; 1582 struct xy_softc *xysc; 1583 1584 { 1585 int del = 0, lcv, retval = XY_ERR_AOK; 1586 struct xy_iorq *iorq; 1587 1588 /* soft reset hardware */ 1589 1590 if (!quiet) 1591 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1592 del = xycsc->xyc->xyc_rsetup; 1593 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1594 if (del == XY_ERR_FAIL) { 1595 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1596 retval = XY_ERR_FAIL; 1597 } 1598 if (xysc) 1599 xyc_xyreset(xycsc, xysc); 1600 1601 /* fix queues based on "blast-mode" */ 1602 1603 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1604 iorq = &xycsc->reqs[lcv]; 1605 1606 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1607 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1608 XY_STATE(iorq->mode) != XY_SUB_NORM) 1609 /* is it active? */ 1610 continue; 1611 1612 if (blastmode == XY_RSET_ALL || 1613 blastmode != iorq) { 1614 /* failed */ 1615 iorq->errno = error; 1616 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1617 switch (XY_STATE(iorq->mode)) { 1618 case XY_SUB_NORM: 1619 iorq->buf->b_error = EIO; 1620 iorq->buf->b_flags |= B_ERROR; 1621 iorq->buf->b_resid = 1622 iorq->sectcnt * XYFM_BPS; 1623 /* Sun3: map/unmap regardless of B_PHYS */ 1624 dvma_mapout(iorq->dbufbase, 1625 iorq->buf->b_bcount); 1626 iorq->xy->xyq.b_actf = 1627 iorq->buf->b_actf; 1628 disk_unbusy(&iorq->xy->sc_dk, 1629 (iorq->buf->b_bcount - 1630 iorq->buf->b_resid)); 1631 biodone(iorq->buf); 1632 iorq->mode = XY_SUB_FREE; 1633 break; 1634 case XY_SUB_WAIT: 1635 wakeup(iorq); 1636 case XY_SUB_POLL: 1637 iorq->mode = 1638 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1639 break; 1640 } 1641 1642 } else { 1643 1644 /* resubmit, no need to do anything here */ 1645 } 1646 } 1647 1648 /* 1649 * now, if stuff is waiting, start it. 1650 * since we just reset it should go 1651 */ 1652 xyc_start(xycsc, NULL); 1653 1654 return (retval); 1655 } 1656 1657 /* 1658 * xyc_start: start waiting buffers 1659 */ 1660 1661 void 1662 xyc_start(xycsc, iorq) 1663 struct xyc_softc *xycsc; 1664 struct xy_iorq *iorq; 1665 1666 { 1667 int lcv; 1668 struct xy_softc *xy; 1669 1670 if (iorq == NULL) { 1671 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1672 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1673 if (xy->xyq.b_actf == NULL) continue; 1674 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1675 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1676 } 1677 } 1678 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1679 } 1680 1681 /* 1682 * xyc_remove_iorq: remove "done" IOPB's. 1683 */ 1684 1685 int 1686 xyc_remove_iorq(xycsc) 1687 struct xyc_softc *xycsc; 1688 1689 { 1690 int errno, rq, comm, errs; 1691 struct xyc *xyc = xycsc->xyc; 1692 u_long addr; 1693 struct xy_iopb *iopb; 1694 struct xy_iorq *iorq; 1695 struct buf *bp; 1696 1697 if (xyc->xyc_csr & XYC_DERR) { 1698 /* 1699 * DOUBLE ERROR: should never happen under normal use. This 1700 * error is so bad, you can't even tell which IOPB is bad, so 1701 * we dump them all. 1702 */ 1703 errno = XY_ERR_DERR; 1704 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1705 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1706 printf("%s: soft reset failed!\n", 1707 xycsc->sc_dev.dv_xname); 1708 panic("xyc_remove_iorq: controller DEAD"); 1709 } 1710 return (XY_ERR_AOK); 1711 } 1712 1713 /* 1714 * get iopb that is done, loop down the chain 1715 */ 1716 1717 if (xyc->xyc_csr & XYC_ERR) { 1718 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1719 } 1720 if (xyc->xyc_csr & XYC_IPND) { 1721 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1722 } 1723 1724 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1725 iorq = xycsc->xy_chain[rq]; 1726 if (iorq == NULL) break; /* done ! */ 1727 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1728 continue; /* free, or done */ 1729 iopb = iorq->iopb; 1730 if (iopb->done == 0) 1731 continue; /* not done yet */ 1732 1733 comm = iopb->com; 1734 errs = iopb->errs; 1735 1736 if (errs) 1737 iorq->errno = iopb->errno; 1738 else 1739 iorq->errno = 0; 1740 1741 /* handle non-fatal errors */ 1742 1743 if (errs && 1744 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1745 continue; /* AOK: we resubmitted it */ 1746 1747 1748 /* this iorq is now done (hasn't been restarted or anything) */ 1749 1750 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1751 xyc_perror(iorq, iopb, 0); 1752 1753 /* now, if read/write check to make sure we got all the data 1754 * we needed. (this may not be the case if we got an error in 1755 * the middle of a multisector request). */ 1756 1757 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1758 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1759 /* we just successfully processed a bad144 sector 1760 * note: if we are in bad 144 mode, the pointers have 1761 * been advanced already (see above) and are pointing 1762 * at the bad144 sector. to exit bad144 mode, we 1763 * must advance the pointers 1 sector and issue a new 1764 * request if there are still sectors left to process 1765 * 1766 */ 1767 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1768 1769 /* exit b144 mode */ 1770 iorq->mode = iorq->mode & (~XY_MODE_B144); 1771 1772 if (iorq->sectcnt) { /* more to go! */ 1773 iorq->lasterror = iorq->errno = iopb->errno = 0; 1774 iopb->errs = iopb->done = 0; 1775 iorq->tries = 0; 1776 iopb->scnt = iorq->sectcnt; 1777 iopb->cyl = iorq->blockno / 1778 iorq->xy->sectpercyl; 1779 iopb->head = 1780 (iorq->blockno / iorq->xy->nhead) % 1781 iorq->xy->nhead; 1782 iopb->sect = iorq->blockno % XYFM_BPS; 1783 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1784 iopb->dataa = (addr & 0xffff); 1785 iopb->datar = ((addr & 0xff0000) >> 16); 1786 /* will resubit at end */ 1787 continue; 1788 } 1789 } 1790 /* final cleanup, totally done with this request */ 1791 1792 switch (XY_STATE(iorq->mode)) { 1793 case XY_SUB_NORM: 1794 bp = iorq->buf; 1795 if (errs) { 1796 bp->b_error = EIO; 1797 bp->b_flags |= B_ERROR; 1798 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1799 } else { 1800 bp->b_resid = 0; /* done */ 1801 } 1802 /* Sun3: map/unmap regardless of B_PHYS */ 1803 dvma_mapout(iorq->dbufbase, 1804 iorq->buf->b_bcount); 1805 iorq->xy->xyq.b_actf = bp->b_actf; 1806 disk_unbusy(&iorq->xy->sc_dk, 1807 (bp->b_bcount - bp->b_resid)); 1808 iorq->mode = XY_SUB_FREE; 1809 biodone(bp); 1810 break; 1811 case XY_SUB_WAIT: 1812 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1813 wakeup(iorq); 1814 break; 1815 case XY_SUB_POLL: 1816 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1817 break; 1818 } 1819 } 1820 1821 return (XY_ERR_AOK); 1822 } 1823 1824 /* 1825 * xyc_perror: print error. 1826 * - if still_trying is true: we got an error, retried and got a 1827 * different error. in that case lasterror is the old error, 1828 * and errno is the new one. 1829 * - if still_trying is not true, then if we ever had an error it 1830 * is in lasterror. also, if iorq->errno == 0, then we recovered 1831 * from that error (otherwise iorq->errno == iorq->lasterror). 1832 */ 1833 void 1834 xyc_perror(iorq, iopb, still_trying) 1835 struct xy_iorq *iorq; 1836 struct xy_iopb *iopb; 1837 int still_trying; 1838 1839 { 1840 1841 int error = iorq->lasterror; 1842 1843 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1844 : iorq->xyc->sc_dev.dv_xname); 1845 if (iorq->buf) 1846 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1847 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1848 printf("%s %d/%d/%d: ", 1849 (iopb->com == XYCMD_RD) ? "read" : "write", 1850 iopb->cyl, iopb->head, iopb->sect); 1851 printf("%s", xyc_e2str(error)); 1852 1853 if (still_trying) 1854 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1855 else 1856 if (iorq->errno == 0) 1857 printf(" [recovered in %d tries]", iorq->tries); 1858 1859 printf("\n"); 1860 } 1861 1862 /* 1863 * xyc_error: non-fatal error encountered... recover. 1864 * return AOK if resubmitted, return FAIL if this iopb is done 1865 */ 1866 int 1867 xyc_error(xycsc, iorq, iopb, comm) 1868 struct xyc_softc *xycsc; 1869 struct xy_iorq *iorq; 1870 struct xy_iopb *iopb; 1871 int comm; 1872 1873 { 1874 int errno = iorq->errno; 1875 int erract = xyc_entoact(errno); 1876 int oldmode, advance, i; 1877 1878 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1879 oldmode = iorq->mode; 1880 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1881 /* make xyc_start ignore us */ 1882 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1883 iorq->mode = oldmode; 1884 } 1885 /* check for read/write to a sector in bad144 table if bad: redirect 1886 * request to bad144 area */ 1887 1888 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1889 (iorq->mode & XY_MODE_B144) == 0) { 1890 advance = iorq->sectcnt - iopb->scnt; 1891 XYC_ADVANCE(iorq, advance); 1892 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1893 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1894 iorq->blockno % iorq->xy->nsect)) != -1) { 1895 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1896 * redirect */ 1897 iopb->errno = iopb->done = iopb->errs = 0; 1898 iopb->scnt = 1; 1899 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1900 /* second to last acyl */ 1901 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1902 * standard */ 1903 iopb->head = i / iorq->xy->nhead; 1904 iopb->sect = i % iorq->xy->nhead; 1905 /* will resubmit when we come out of remove_iorq */ 1906 return (XY_ERR_AOK); /* recovered! */ 1907 } 1908 } 1909 1910 /* 1911 * it isn't a bad144 sector, must be real error! see if we can retry 1912 * it? 1913 */ 1914 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1915 xyc_perror(iorq, iopb, 1); /* inform of error state 1916 * change */ 1917 iorq->lasterror = errno; 1918 1919 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1920 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1921 iorq->tries++; 1922 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1923 /* will resubmit at end of remove_iorq */ 1924 return (XY_ERR_AOK); /* recovered! */ 1925 } 1926 1927 /* failed to recover from this error */ 1928 return (XY_ERR_FAIL); 1929 } 1930 1931 /* 1932 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1933 */ 1934 void 1935 xyc_tick(arg) 1936 void *arg; 1937 1938 { 1939 struct xyc_softc *xycsc = arg; 1940 int lcv, s, reset = 0; 1941 1942 /* reduce ttl for each request if one goes to zero, reset xyc */ 1943 s = splbio(); 1944 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1945 if (xycsc->reqs[lcv].mode == 0 || 1946 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1947 continue; 1948 xycsc->reqs[lcv].ttl--; 1949 if (xycsc->reqs[lcv].ttl == 0) 1950 reset = 1; 1951 } 1952 if (reset) { 1953 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1954 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1955 } 1956 splx(s); 1957 1958 /* until next time */ 1959 1960 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1961 } 1962 1963 /* 1964 * xyc_ioctlcmd: this function provides a user level interface to the 1965 * controller via ioctl. this allows "format" programs to be written 1966 * in user code, and is also useful for some debugging. we return 1967 * an error code. called at user priority. 1968 * 1969 * XXX missing a few commands (see the 7053 driver for ideas) 1970 */ 1971 int 1972 xyc_ioctlcmd(xy, dev, xio) 1973 struct xy_softc *xy; 1974 dev_t dev; 1975 struct xd_iocmd *xio; 1976 1977 { 1978 int s, err, rqno; 1979 void * dvmabuf = NULL; 1980 struct xyc_softc *xycsc; 1981 1982 /* check sanity of requested command */ 1983 1984 switch (xio->cmd) { 1985 1986 case XYCMD_NOP: /* no op: everything should be zero */ 1987 if (xio->subfn || xio->dptr || xio->dlen || 1988 xio->block || xio->sectcnt) 1989 return (EINVAL); 1990 break; 1991 1992 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1993 case XYCMD_WR: 1994 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1995 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1996 return (EINVAL); 1997 break; 1998 1999 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2000 return (EINVAL); 2001 2002 break; 2003 2004 default: 2005 return (EINVAL);/* ??? */ 2006 } 2007 2008 /* create DVMA buffer for request if needed */ 2009 2010 if (xio->dlen) { 2011 dvmabuf = dvma_malloc(xio->dlen); 2012 if (xio->cmd == XYCMD_WR) { 2013 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2014 if (err) { 2015 dvma_free(dvmabuf, xio->dlen); 2016 return (err); 2017 } 2018 } 2019 } 2020 /* do it! */ 2021 2022 err = 0; 2023 xycsc = xy->parent; 2024 s = splbio(); 2025 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2026 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2027 if (rqno == XY_ERR_FAIL) { 2028 err = EIO; 2029 goto done; 2030 } 2031 xio->errno = xycsc->ciorq->errno; 2032 xio->tries = xycsc->ciorq->tries; 2033 XYC_DONE(xycsc, err); 2034 2035 if (xio->cmd == XYCMD_RD) 2036 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2037 2038 done: 2039 splx(s); 2040 if (dvmabuf) 2041 dvma_free(dvmabuf, xio->dlen); 2042 return (err); 2043 } 2044 2045 /* 2046 * xyc_e2str: convert error code number into an error string 2047 */ 2048 char * 2049 xyc_e2str(no) 2050 int no; 2051 { 2052 switch (no) { 2053 case XY_ERR_FAIL: 2054 return ("Software fatal error"); 2055 case XY_ERR_DERR: 2056 return ("DOUBLE ERROR"); 2057 case XY_ERR_AOK: 2058 return ("Successful completion"); 2059 case XY_ERR_IPEN: 2060 return("Interrupt pending"); 2061 case XY_ERR_BCFL: 2062 return("Busy conflict"); 2063 case XY_ERR_TIMO: 2064 return("Operation timeout"); 2065 case XY_ERR_NHDR: 2066 return("Header not found"); 2067 case XY_ERR_HARD: 2068 return("Hard ECC error"); 2069 case XY_ERR_ICYL: 2070 return("Illegal cylinder address"); 2071 case XY_ERR_ISEC: 2072 return("Illegal sector address"); 2073 case XY_ERR_SMAL: 2074 return("Last sector too small"); 2075 case XY_ERR_SACK: 2076 return("Slave ACK error (non-existent memory)"); 2077 case XY_ERR_CHER: 2078 return("Cylinder and head/header error"); 2079 case XY_ERR_SRTR: 2080 return("Auto-seek retry successful"); 2081 case XY_ERR_WPRO: 2082 return("Write-protect error"); 2083 case XY_ERR_UIMP: 2084 return("Unimplemented command"); 2085 case XY_ERR_DNRY: 2086 return("Drive not ready"); 2087 case XY_ERR_SZER: 2088 return("Sector count zero"); 2089 case XY_ERR_DFLT: 2090 return("Drive faulted"); 2091 case XY_ERR_ISSZ: 2092 return("Illegal sector size"); 2093 case XY_ERR_SLTA: 2094 return("Self test A"); 2095 case XY_ERR_SLTB: 2096 return("Self test B"); 2097 case XY_ERR_SLTC: 2098 return("Self test C"); 2099 case XY_ERR_SOFT: 2100 return("Soft ECC error"); 2101 case XY_ERR_SFOK: 2102 return("Soft ECC error recovered"); 2103 case XY_ERR_IHED: 2104 return("Illegal head"); 2105 case XY_ERR_DSEQ: 2106 return("Disk sequencer error"); 2107 case XY_ERR_SEEK: 2108 return("Seek error"); 2109 default: 2110 return ("Unknown error"); 2111 } 2112 } 2113 2114 int 2115 xyc_entoact(errno) 2116 2117 int errno; 2118 2119 { 2120 switch (errno) { 2121 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2122 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2123 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2124 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2125 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2126 2127 return(XY_ERA_PROG); /* program error ! */ 2128 2129 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2130 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2131 case XY_ERR_SOFT: 2132 2133 return(XY_ERA_HARD); /* hard error, retry */ 2134 2135 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2136 2137 return(XY_ERA_RSET); /* hard error reset */ 2138 2139 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2140 2141 return(XY_ERA_SOFT); /* an FYI error */ 2142 2143 case XY_ERR_WPRO: 2144 2145 return(XY_ERA_WPRO); /* write protect */ 2146 } 2147 2148 return(XY_ERA_PROG); /* ??? */ 2149 } 2150
Indexes created Mon Sep 29 21:09:56 GMT 2025