xy.c revision 1.17
1 /* $NetBSD: xy.c,v 1.17 1997/10/17 03:47:59 gwr Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: $NetBSD: xy.c,v 1.17 1997/10/17 03:47:59 gwr Exp $ 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <machine/autoconf.h> 81 #include <machine/sun_disklabel.h> 82 #include <machine/dvma.h> 83 84 #include <sun3/dev/xyreg.h> 85 #include <sun3/dev/xyvar.h> 86 #include <sun3/dev/xio.h> 87 88 #include "locators.h" 89 90 /* 91 * macros 92 */ 93 94 /* 95 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 96 */ 97 #define XYC_GO(XYC, ADDR) { \ 98 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 99 (ADDR) = ((ADDR) >> 8); \ 100 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 101 (ADDR) = ((ADDR) >> 8); \ 102 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_reloc_hi = (ADDR); \ 105 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 106 } 107 108 /* 109 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 110 */ 111 112 #define XYC_DONE(SC,ER) { \ 113 if ((ER) == XY_ERR_AOK) { \ 114 (ER) = (SC)->ciorq->errno; \ 115 (SC)->ciorq->mode = XY_SUB_FREE; \ 116 wakeup((SC)->ciorq); \ 117 } \ 118 } 119 120 /* 121 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 122 */ 123 124 #define XYC_ADVANCE(IORQ, N) { \ 125 if (N) { \ 126 (IORQ)->sectcnt -= (N); \ 127 (IORQ)->blockno += (N); \ 128 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 129 } \ 130 } 131 132 /* 133 * note - addresses you can sleep on: 134 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 135 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 136 */ 137 138 139 /* 140 * function prototypes 141 * "xyc_*" functions are internal, all others are external interfaces 142 */ 143 144 /* internals */ 145 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 146 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 147 char *xyc_e2str __P((int)); 148 int xyc_entoact __P((int)); 149 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 150 struct xy_iopb *, int)); 151 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 152 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 153 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 154 int xyc_remove_iorq __P((struct xyc_softc *)); 155 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 156 struct xy_softc *)); 157 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 158 struct xy_softc *, int, u_long, int, 159 caddr_t, struct buf *)); 160 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 161 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 162 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 163 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 164 void xyc_tick __P((void *)); 165 int xyc_unbusy __P((struct xyc *, int)); 166 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 167 168 /* machine interrupt hook */ 169 int xycintr __P((void *)); 170 171 /* bdevsw, cdevsw */ 172 bdev_decl(xy); 173 cdev_decl(xy); 174 175 /* autoconf */ 176 static int xycmatch __P((struct device *, struct cfdata *, void *)); 177 static void xycattach __P((struct device *, struct device *, void *)); 178 static int xyc_print __P((void *, const char *name)); 179 180 static int xymatch __P((struct device *, struct cfdata *, void *)); 181 static void xyattach __P((struct device *, struct device *, void *)); 182 static void xy_init __P((struct xy_softc *)); 183 184 static void xydummystrat __P((struct buf *)); 185 int xygetdisklabel __P((struct xy_softc *, void *)); 186 187 /* 188 * cfdrivers: device driver interface to autoconfig 189 */ 190 191 struct cfattach xyc_ca = { 192 sizeof(struct xyc_softc), xycmatch, xycattach 193 }; 194 195 struct cfdriver xyc_cd = { 196 NULL, "xyc", DV_DULL 197 }; 198 199 struct cfattach xy_ca = { 200 sizeof(struct xy_softc), xymatch, xyattach 201 }; 202 203 struct cfdriver xy_cd = { 204 NULL, "xy", DV_DISK 205 }; 206 207 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 208 int driveno; /* unit number */ 209 }; 210 211 /* 212 * dkdriver 213 */ 214 215 struct dkdriver xydkdriver = { xystrategy }; 216 217 /* 218 * start: disk label fix code (XXX) 219 */ 220 221 static void *xy_labeldata; 222 223 static void 224 xydummystrat(bp) 225 struct buf *bp; 226 { 227 if (bp->b_bcount != XYFM_BPS) 228 panic("xydummystrat"); 229 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 230 bp->b_flags |= B_DONE; 231 bp->b_flags &= ~B_BUSY; 232 } 233 234 int 235 xygetdisklabel(xy, b) 236 struct xy_softc *xy; 237 void *b; 238 { 239 char *err; 240 struct sun_disklabel *sdl; 241 242 /* We already have the label data in `b'; setup for dummy strategy */ 243 xy_labeldata = b; 244 245 /* Required parameter for readdisklabel() */ 246 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 247 248 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 249 xydummystrat, 250 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 251 if (err) { 252 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 253 return(XY_ERR_FAIL); 254 } 255 256 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 257 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 258 if (sdl->sl_magic == SUN_DKMAGIC) 259 xy->pcyl = sdl->sl_pcyl; 260 else { 261 printf("%s: WARNING: no `pcyl' in disk label.\n", 262 xy->sc_dev.dv_xname); 263 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 264 xy->sc_dk.dk_label->d_acylinders; 265 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 266 xy->sc_dev.dv_xname, xy->pcyl); 267 } 268 269 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 270 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 271 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 272 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 273 xy->sectpercyl = xy->nhead * xy->nsect; 274 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 275 * sun->bsd */ 276 return(XY_ERR_AOK); 277 } 278 279 /* 280 * end: disk label fix code (XXX) 281 */ 282 283 /* 284 * a u t o c o n f i g f u n c t i o n s 285 */ 286 287 /* 288 * xycmatch: determine if xyc is present or not. we do a 289 * soft reset to detect the xyc. 290 */ 291 static int 292 xycmatch(parent, cf, aux) 293 struct device *parent; 294 struct cfdata *cf; 295 void *aux; 296 { 297 struct confargs *ca = aux; 298 299 /* No default VME address. */ 300 if (ca->ca_paddr == -1) 301 return (0); 302 303 /* Make sure something is there... */ 304 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 305 return (0); 306 307 /* Default interrupt priority. */ 308 if (ca->ca_intpri == -1) 309 ca->ca_intpri = 2; 310 311 return (1); 312 } 313 314 /* 315 * xycattach: attach controller 316 */ 317 static void 318 xycattach(parent, self, aux) 319 struct device *parent, *self; 320 void *aux; 321 { 322 struct xyc_softc *xyc = (void *) self; 323 struct confargs *ca = aux; 324 struct xyc_attach_args xa; 325 int lcv, err, res, pbsz; 326 void *tmp, *tmp2; 327 u_long ultmp; 328 329 /* get addressing and intr level stuff from autoconfig and load it 330 * into our xyc_softc. */ 331 332 xyc->xyc = (struct xyc *) 333 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 334 xyc->ipl = ca->ca_intpri; 335 xyc->vector = ca->ca_intvec; 336 xyc->no_ols = 0; /* XXX should be from config */ 337 338 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 339 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 340 341 /* 342 * allocate and zero buffers 343 * check boundaries of the KVA's ... all IOPBs must reside in 344 * the same 64K region. 345 */ 346 347 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 348 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 349 ultmp = (u_long) tmp; 350 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 351 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 352 dvma_free(tmp2, pbsz); 353 ultmp = (u_long) tmp; 354 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 355 printf("%s: can't alloc IOPB mem in 64K\n", 356 xyc->sc_dev.dv_xname); 357 return; 358 } 359 } 360 bzero(tmp, pbsz); 361 xyc->iopbase = tmp; 362 xyc->dvmaiopb = (struct xy_iopb *) 363 dvma_kvtopa(xyc->iopbase, BUS_VME16); 364 xyc->reqs = (struct xy_iorq *) 365 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 366 if (xyc->reqs == NULL) 367 panic("xyc malloc"); 368 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 369 370 /* 371 * init iorq to iopb pointers, and non-zero fields in the 372 * iopb which never change. 373 */ 374 375 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 376 xyc->xy_chain[lcv] = NULL; 377 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 378 xyc->iopbase[lcv].asr = 1; /* always the same */ 379 xyc->iopbase[lcv].eef = 1; /* always the same */ 380 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 381 xyc->iopbase[lcv].aud = 1; /* always the same */ 382 xyc->iopbase[lcv].relo = 1; /* always the same */ 383 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 384 } 385 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 386 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 387 xyc->xy_hand = 0; 388 389 /* read controller parameters and insure we have a 450/451 */ 390 391 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 392 res = xyc->ciopb->ctyp; 393 XYC_DONE(xyc, err); 394 if (res != XYCT_450) { 395 if (err) 396 printf(": %s: ", xyc_e2str(err)); 397 printf(": doesn't identify as a 450/451\n"); 398 return; 399 } 400 printf(": Xylogics 450/451"); 401 if (xyc->no_ols) 402 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 403 printf("\n"); 404 if (err) { 405 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 406 xyc_e2str(err)); 407 return; 408 } 409 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 410 printf("%s: 24 bit addressing turned off\n", 411 xyc->sc_dev.dv_xname); 412 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 413 printf("to enable 24 bit mode and this driver\n"); 414 return; 415 } 416 417 /* link in interrupt with higher level software */ 418 isr_add_vectored(xycintr, (void *)xyc, 419 ca->ca_intpri, ca->ca_intvec); 420 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 421 422 /* now we must look for disks using autoconfig */ 423 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 424 (void) config_found(self, (void *) &xa, xyc_print); 425 426 /* start the watchdog clock */ 427 timeout(xyc_tick, xyc, XYC_TICKCNT); 428 } 429 430 static int 431 xyc_print(aux, name) 432 void *aux; 433 const char *name; 434 { 435 struct xyc_attach_args *xa = aux; 436 437 if (name != NULL) 438 printf("%s: ", name); 439 440 if (xa->driveno != -1) 441 printf(" drive %d", xa->driveno); 442 443 return UNCONF; 444 } 445 446 /* 447 * xymatch: probe for disk. 448 * 449 * note: we almost always say disk is present. this allows us to 450 * spin up and configure a disk after the system is booted (we can 451 * call xyattach!). Also, wire down the relationship between the 452 * xy* and xyc* devices, to simplify boot device identification. 453 */ 454 static int 455 xymatch(parent, cf, aux) 456 struct device *parent; 457 struct cfdata *cf; 458 void *aux; 459 { 460 struct xyc_attach_args *xa = aux; 461 int xy_unit; 462 463 /* Match only on the "wired-down" controller+disk. */ 464 xy_unit = parent->dv_unit * 2 + xa->driveno; 465 if (cf->cf_unit != xy_unit) 466 return (0); 467 468 return (1); 469 } 470 471 /* 472 * xyattach: attach a disk. 473 */ 474 static void 475 xyattach(parent, self, aux) 476 struct device *parent, *self; 477 void *aux; 478 { 479 struct xy_softc *xy = (void *) self; 480 struct xyc_softc *xyc = (void *) parent; 481 struct xyc_attach_args *xa = aux; 482 483 printf("\n"); 484 485 /* 486 * Always re-initialize the disk structure. We want statistics 487 * to start with a clean slate. 488 */ 489 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 490 xy->sc_dk.dk_driver = &xydkdriver; 491 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 492 493 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 494 xy->flags = 0; 495 xy->parent = xyc; 496 497 /* init queue of waiting bufs */ 498 xy->xyq.b_active = 0; 499 xy->xyq.b_actf = 0; 500 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 501 xy->xyrq = &xyc->reqs[xa->driveno]; 502 503 xy->xy_drive = xa->driveno; 504 xyc->sc_drives[xa->driveno] = xy; 505 506 /* Do init work common to attach and open. */ 507 xy_init(xy); 508 dk_establish(&xy->sc_dk, &xy->sc_dev); 509 } 510 511 /* 512 * end of autoconfig functions 513 */ 514 515 /* 516 * Initialize a disk. This can be called from both autoconf and 517 * also from xyopen/xystrategy. 518 */ 519 static void 520 xy_init(xy) 521 struct xy_softc *xy; 522 { 523 struct xyc_softc *xyc; 524 struct dkbad *dkb; 525 void *dvmabuf; 526 int err, spt, mb, blk, lcv, fullmode, newstate; 527 extern int cold; 528 529 xyc = xy->parent; 530 xy->state = XY_DRIVE_ATTACHING; 531 newstate = XY_DRIVE_UNKNOWN; 532 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 533 dvmabuf = dvma_malloc(XYFM_BPS); 534 535 /* first try and reset the drive */ 536 537 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 538 XYC_DONE(xyc, err); 539 if (err == XY_ERR_DNRY) { 540 printf("%s: drive %d: off-line\n", 541 xy->sc_dev.dv_xname, xy->xy_drive); 542 goto done; 543 } 544 if (err) { 545 printf("%s: ERROR 0x%02x (%s)\n", 546 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 547 goto done; 548 } 549 printf("%s: drive %d ready", 550 xy->sc_dev.dv_xname, xy->xy_drive); 551 552 /* 553 * now set drive parameters (to semi-bogus values) so we can read the 554 * disk label. 555 */ 556 xy->pcyl = xy->ncyl = 1; 557 xy->acyl = 0; 558 xy->nhead = 1; 559 xy->nsect = 1; 560 xy->sectpercyl = 1; 561 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 562 xy->dkb.bt_bad[lcv].bt_cyl = 563 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 564 565 /* read disk label */ 566 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 567 xy->drive_type++) { 568 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 569 dvmabuf, fullmode); 570 XYC_DONE(xyc, err); 571 if (err == XY_ERR_AOK) break; 572 } 573 574 if (err != XY_ERR_AOK) { 575 printf("%s: reading disk label failed: %s\n", 576 xy->sc_dev.dv_xname, xyc_e2str(err)); 577 goto done; 578 } 579 printf("%s: drive type %d\n", 580 xy->sc_dev.dv_xname, xy->drive_type); 581 582 newstate = XY_DRIVE_NOLABEL; 583 584 xy->hw_spt = spt = 0; /* XXX needed ? */ 585 /* Attach the disk: must be before getdisklabel to malloc label */ 586 disk_attach(&xy->sc_dk); 587 588 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 589 goto done; 590 591 /* inform the user of what is up */ 592 printf("%s: <%s>, pcyl %d\n", 593 xy->sc_dev.dv_xname, 594 (char *)dvmabuf, xy->pcyl); 595 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 596 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 597 xy->sc_dev.dv_xname, mb, 598 xy->ncyl, xy->nhead, xy->nsect); 599 600 /* 601 * 450/451 stupidity: the drive type is encoded into the format 602 * of the disk. the drive type in the IOPB must match the drive 603 * type in the format, or you will not be able to do I/O to the 604 * disk (you get header not found errors). if you have two drives 605 * of different sizes that have the same drive type in their 606 * formatting then you are out of luck. 607 * 608 * this problem was corrected in the 753/7053. 609 */ 610 611 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 612 struct xy_softc *oxy; 613 614 oxy = xyc->sc_drives[lcv]; 615 if (oxy == NULL || oxy == xy) continue; 616 if (oxy->drive_type != xy->drive_type) continue; 617 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 618 xy->nhead != oxy->nhead) { 619 printf("%s: %s and %s must be the same size!\n", 620 xyc->sc_dev.dv_xname, 621 xy ->sc_dev.dv_xname, 622 oxy->sc_dev.dv_xname); 623 panic("xy drive size mismatch"); 624 } 625 } 626 627 628 /* now set the real drive parameters! */ 629 blk = (xy->nsect - 1) + 630 ((xy->nhead - 1) * xy->nsect) + 631 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 632 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 633 XYC_DONE(xyc, err); 634 if (err) { 635 printf("%s: write drive size failed: %s\n", 636 xy->sc_dev.dv_xname, xyc_e2str(err)); 637 goto done; 638 } 639 newstate = XY_DRIVE_ONLINE; 640 641 /* 642 * read bad144 table. this table resides on the first sector of the 643 * last track of the disk (i.e. second cyl of "acyl" area). 644 */ 645 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 646 /* last cyl */ 647 (xy->nhead - 1) * xy->nsect; /* last head */ 648 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 649 dvmabuf, fullmode); 650 XYC_DONE(xyc, err); 651 if (err) { 652 printf("%s: reading bad144 failed: %s\n", 653 xy->sc_dev.dv_xname, xyc_e2str(err)); 654 goto done; 655 } 656 657 /* check dkbad for sanity */ 658 dkb = (struct dkbad *) dvmabuf; 659 for (lcv = 0; lcv < 126; lcv++) { 660 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 661 dkb->bt_bad[lcv].bt_cyl == 0) && 662 dkb->bt_bad[lcv].bt_trksec == 0xffff) 663 continue; /* blank */ 664 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 665 break; 666 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 667 break; 668 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 669 break; 670 } 671 if (lcv != 126) { 672 printf("%s: warning: invalid bad144 sector!\n", 673 xy->sc_dev.dv_xname); 674 } else { 675 bcopy(dvmabuf, &xy->dkb, XYFM_BPS); 676 } 677 678 done: 679 xy->state = newstate; 680 dvma_free(dvmabuf, XYFM_BPS); 681 } 682 683 /* 684 * { b , c } d e v s w f u n c t i o n s 685 */ 686 687 /* 688 * xyclose: close device 689 */ 690 int 691 xyclose(dev, flag, fmt, p) 692 dev_t dev; 693 int flag, fmt; 694 struct proc *p; 695 { 696 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 697 int part = DISKPART(dev); 698 699 /* clear mask bits */ 700 701 switch (fmt) { 702 case S_IFCHR: 703 xy->sc_dk.dk_copenmask &= ~(1 << part); 704 break; 705 case S_IFBLK: 706 xy->sc_dk.dk_bopenmask &= ~(1 << part); 707 break; 708 } 709 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 710 711 return 0; 712 } 713 714 /* 715 * xydump: crash dump system 716 */ 717 int 718 xydump(dev, blkno, va, sz) 719 dev_t dev; 720 daddr_t blkno; 721 caddr_t va; 722 size_t sz; 723 { 724 int unit, part; 725 struct xy_softc *xy; 726 727 unit = DISKUNIT(dev); 728 if (unit >= xy_cd.cd_ndevs) 729 return ENXIO; 730 part = DISKPART(dev); 731 732 xy = xy_cd.cd_devs[unit]; 733 734 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 735 'a' + part); 736 737 return ENXIO; 738 739 /* outline: globals: "dumplo" == sector number of partition to start 740 * dump at (convert to physical sector with partition table) 741 * "dumpsize" == size of dump in clicks "physmem" == size of physical 742 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 743 * physmem) 744 * 745 * dump a copy of physical memory to the dump device starting at sector 746 * "dumplo" in the swap partition (make sure > 0). map in pages as 747 * we go. use polled I/O. 748 * 749 * XXX how to handle NON_CONTIG? 750 */ 751 } 752 753 /* 754 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 755 */ 756 int 757 xyioctl(dev, command, addr, flag, p) 758 dev_t dev; 759 u_long command; 760 caddr_t addr; 761 int flag; 762 struct proc *p; 763 764 { 765 struct xy_softc *xy; 766 struct xd_iocmd *xio; 767 int error, s, unit; 768 769 unit = DISKUNIT(dev); 770 771 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 772 return (ENXIO); 773 774 /* switch on ioctl type */ 775 776 switch (command) { 777 case DIOCSBAD: /* set bad144 info */ 778 if ((flag & FWRITE) == 0) 779 return EBADF; 780 s = splbio(); 781 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 782 splx(s); 783 return 0; 784 785 case DIOCGDINFO: /* get disk label */ 786 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 787 return 0; 788 789 case DIOCGPART: /* get partition info */ 790 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 791 ((struct partinfo *) addr)->part = 792 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 793 return 0; 794 795 case DIOCSDINFO: /* set disk label */ 796 if ((flag & FWRITE) == 0) 797 return EBADF; 798 error = setdisklabel(xy->sc_dk.dk_label, 799 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 800 xy->sc_dk.dk_cpulabel); 801 if (error == 0) { 802 if (xy->state == XY_DRIVE_NOLABEL) 803 xy->state = XY_DRIVE_ONLINE; 804 } 805 return error; 806 807 case DIOCWLABEL: /* change write status of disk label */ 808 if ((flag & FWRITE) == 0) 809 return EBADF; 810 if (*(int *) addr) 811 xy->flags |= XY_WLABEL; 812 else 813 xy->flags &= ~XY_WLABEL; 814 return 0; 815 816 case DIOCWDINFO: /* write disk label */ 817 if ((flag & FWRITE) == 0) 818 return EBADF; 819 error = setdisklabel(xy->sc_dk.dk_label, 820 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 821 xy->sc_dk.dk_cpulabel); 822 if (error == 0) { 823 if (xy->state == XY_DRIVE_NOLABEL) 824 xy->state = XY_DRIVE_ONLINE; 825 826 /* Simulate opening partition 0 so write succeeds. */ 827 xy->sc_dk.dk_openmask |= (1 << 0); 828 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 829 xystrategy, xy->sc_dk.dk_label, 830 xy->sc_dk.dk_cpulabel); 831 xy->sc_dk.dk_openmask = 832 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 833 } 834 return error; 835 836 case DIOSXDCMD: 837 xio = (struct xd_iocmd *) addr; 838 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 839 return (error); 840 return (xyc_ioctlcmd(xy, dev, xio)); 841 842 default: 843 return ENOTTY; 844 } 845 } 846 847 /* 848 * xyopen: open drive 849 */ 850 int 851 xyopen(dev, flag, fmt, p) 852 dev_t dev; 853 int flag, fmt; 854 struct proc *p; 855 { 856 int err, unit, part, s; 857 struct xy_softc *xy; 858 859 /* first, could it be a valid target? */ 860 unit = DISKUNIT(dev); 861 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 862 return (ENXIO); 863 part = DISKPART(dev); 864 err = 0; 865 866 /* 867 * If some other processing is doing init, sleep. 868 */ 869 s = splbio(); 870 while (xy->state == XY_DRIVE_ATTACHING) { 871 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 872 err = EINTR; 873 goto done; 874 } 875 } 876 /* Do we need to init the drive? */ 877 if (xy->state == XY_DRIVE_UNKNOWN) { 878 xy_init(xy); 879 wakeup(&xy->state); 880 } 881 /* Was the init successful? */ 882 if (xy->state == XY_DRIVE_UNKNOWN) { 883 err = EIO; 884 goto done; 885 } 886 887 /* check for partition */ 888 if (part != RAW_PART && 889 (part >= xy->sc_dk.dk_label->d_npartitions || 890 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 891 err = ENXIO; 892 goto done; 893 } 894 895 /* set open masks */ 896 switch (fmt) { 897 case S_IFCHR: 898 xy->sc_dk.dk_copenmask |= (1 << part); 899 break; 900 case S_IFBLK: 901 xy->sc_dk.dk_bopenmask |= (1 << part); 902 break; 903 } 904 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 905 906 done: 907 splx(s); 908 return (err); 909 } 910 911 int 912 xyread(dev, uio, flags) 913 dev_t dev; 914 struct uio *uio; 915 int flags; 916 { 917 918 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 919 } 920 921 int 922 xywrite(dev, uio, flags) 923 dev_t dev; 924 struct uio *uio; 925 int flags; 926 { 927 928 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 929 } 930 931 932 /* 933 * xysize: return size of a partition for a dump 934 */ 935 936 int 937 xysize(dev) 938 dev_t dev; 939 940 { 941 struct xy_softc *xysc; 942 int unit, part, size, omask; 943 944 /* valid unit? */ 945 unit = DISKUNIT(dev); 946 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 947 return (-1); 948 949 part = DISKPART(dev); 950 omask = xysc->sc_dk.dk_openmask & (1 << part); 951 952 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 953 return (-1); 954 955 /* do it */ 956 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 957 size = -1; /* only give valid size for swap partitions */ 958 else 959 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 960 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 961 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 962 return (-1); 963 return (size); 964 } 965 966 /* 967 * xystrategy: buffering system interface to xy. 968 */ 969 void 970 xystrategy(bp) 971 struct buf *bp; 972 973 { 974 struct xy_softc *xy; 975 int s, unit; 976 977 unit = DISKUNIT(bp->b_dev); 978 979 /* check for live device */ 980 981 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 982 bp->b_blkno < 0 || 983 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 984 bp->b_error = EINVAL; 985 goto bad; 986 } 987 988 /* There should always be an open first. */ 989 if (xy->state == XY_DRIVE_UNKNOWN) { 990 bp->b_error = EIO; 991 goto bad; 992 } 993 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 994 /* no I/O to unlabeled disks, unless raw partition */ 995 bp->b_error = EIO; 996 goto bad; 997 } 998 /* short circuit zero length request */ 999 1000 if (bp->b_bcount == 0) 1001 goto done; 1002 1003 /* check bounds with label (disksubr.c). Determine the size of the 1004 * transfer, and make sure it is within the boundaries of the 1005 * partition. Adjust transfer if needed, and signal errors or early 1006 * completion. */ 1007 1008 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1009 (xy->flags & XY_WLABEL) != 0) <= 0) 1010 goto done; 1011 1012 /* 1013 * now we know we have a valid buf structure that we need to do I/O 1014 * on. 1015 */ 1016 1017 s = splbio(); /* protect the queues */ 1018 1019 disksort(&xy->xyq, bp); 1020 1021 /* start 'em up */ 1022 1023 xyc_start(xy->parent, NULL); 1024 1025 /* done! */ 1026 1027 splx(s); 1028 return; 1029 1030 bad: /* tells upper layers we have an error */ 1031 bp->b_flags |= B_ERROR; 1032 done: /* tells upper layers we are done with this 1033 * buf */ 1034 bp->b_resid = bp->b_bcount; 1035 biodone(bp); 1036 } 1037 /* 1038 * end of {b,c}devsw functions 1039 */ 1040 1041 /* 1042 * i n t e r r u p t f u n c t i o n 1043 * 1044 * xycintr: hardware interrupt. 1045 */ 1046 int 1047 xycintr(v) 1048 void *v; 1049 1050 { 1051 struct xyc_softc *xycsc = v; 1052 1053 /* kick the event counter */ 1054 xycsc->sc_intrcnt.ev_count++; 1055 1056 /* remove as many done IOPBs as possible */ 1057 xyc_remove_iorq(xycsc); 1058 1059 /* start any iorq's already waiting */ 1060 xyc_start(xycsc, NULL); 1061 1062 return (1); 1063 } 1064 /* 1065 * end of interrupt function 1066 */ 1067 1068 /* 1069 * i n t e r n a l f u n c t i o n s 1070 */ 1071 1072 /* 1073 * xyc_rqinit: fill out the fields of an I/O request 1074 */ 1075 1076 inline void 1077 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1078 struct xy_iorq *rq; 1079 struct xyc_softc *xyc; 1080 struct xy_softc *xy; 1081 int md; 1082 u_long blk; 1083 int cnt; 1084 caddr_t db; 1085 struct buf *bp; 1086 { 1087 rq->xyc = xyc; 1088 rq->xy = xy; 1089 rq->ttl = XYC_MAXTTL + 10; 1090 rq->mode = md; 1091 rq->tries = rq->errno = rq->lasterror = 0; 1092 rq->blockno = blk; 1093 rq->sectcnt = cnt; 1094 rq->dbuf = rq->dbufbase = db; 1095 rq->buf = bp; 1096 } 1097 1098 /* 1099 * xyc_rqtopb: load up an IOPB based on an iorq 1100 */ 1101 1102 void 1103 xyc_rqtopb(iorq, iopb, cmd, subfun) 1104 struct xy_iorq *iorq; 1105 struct xy_iopb *iopb; 1106 int cmd, subfun; 1107 1108 { 1109 u_long block, dp; 1110 1111 /* normal IOPB case, standard stuff */ 1112 1113 /* chain bit handled later */ 1114 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1115 iopb->com = cmd; 1116 iopb->errno = 0; 1117 iopb->errs = 0; 1118 iopb->done = 0; 1119 if (iorq->xy) { 1120 iopb->unit = iorq->xy->xy_drive; 1121 iopb->dt = iorq->xy->drive_type; 1122 } else { 1123 iopb->unit = 0; 1124 iopb->dt = 0; 1125 } 1126 block = iorq->blockno; 1127 if (iorq->xy == NULL || block == 0) { 1128 iopb->sect = iopb->head = iopb->cyl = 0; 1129 } else { 1130 iopb->sect = block % iorq->xy->nsect; 1131 block = block / iorq->xy->nsect; 1132 iopb->head = block % iorq->xy->nhead; 1133 block = block / iorq->xy->nhead; 1134 iopb->cyl = block; 1135 } 1136 iopb->scnt = iorq->sectcnt; 1137 if (iorq->dbuf == NULL) { 1138 iopb->dataa = 0; 1139 iopb->datar = 0; 1140 } else { 1141 dp = dvma_kvtopa(iorq->dbuf, BUS_VME16); 1142 iopb->dataa = (dp & 0xffff); 1143 iopb->datar = ((dp & 0xff0000) >> 16); 1144 } 1145 iopb->subfn = subfun; 1146 } 1147 1148 1149 /* 1150 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1151 */ 1152 1153 int 1154 xyc_unbusy(xyc, del) 1155 1156 struct xyc *xyc; 1157 int del; 1158 1159 { 1160 while (del-- > 0) { 1161 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1162 break; 1163 DELAY(1); 1164 } 1165 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1166 } 1167 1168 /* 1169 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1170 * note that NORM requests are handled seperately. 1171 */ 1172 int 1173 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1174 struct xyc_softc *xycsc; 1175 int cmd, subfn, unit, block, scnt; 1176 char *dptr; 1177 int fullmode; 1178 { 1179 struct xy_iorq *iorq = xycsc->ciorq; 1180 struct xy_iopb *iopb = xycsc->ciopb; 1181 int submode = XY_STATE(fullmode); 1182 1183 /* 1184 * is someone else using the control iopq wait for it if we can 1185 */ 1186 start: 1187 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1188 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1189 return(XY_ERR_FAIL); 1190 goto start; 1191 } 1192 1193 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1194 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1195 iorq->mode = XY_SUB_FREE; 1196 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1197 } 1198 1199 /* init iorq/iopb */ 1200 1201 xyc_rqinit(iorq, xycsc, 1202 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1203 fullmode, block, scnt, dptr, NULL); 1204 1205 /* load IOPB from iorq */ 1206 1207 xyc_rqtopb(iorq, iopb, cmd, subfn); 1208 1209 /* submit it for processing */ 1210 1211 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1212 1213 return(XY_ERR_AOK); 1214 } 1215 1216 /* 1217 * xyc_startbuf 1218 * start a buffer for running 1219 */ 1220 1221 int 1222 xyc_startbuf(xycsc, xysc, bp) 1223 struct xyc_softc *xycsc; 1224 struct xy_softc *xysc; 1225 struct buf *bp; 1226 1227 { 1228 int partno; 1229 struct xy_iorq *iorq; 1230 struct xy_iopb *iopb; 1231 u_long block; 1232 caddr_t dbuf; 1233 1234 iorq = xysc->xyrq; 1235 iopb = iorq->iopb; 1236 1237 /* get buf */ 1238 1239 if (bp == NULL) 1240 panic("xyc_startbuf null buf"); 1241 1242 partno = DISKPART(bp->b_dev); 1243 #ifdef XYC_DEBUG 1244 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1245 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1246 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1247 bp->b_bcount, bp->b_data); 1248 #endif 1249 1250 /* 1251 * load request. we have to calculate the correct block number based 1252 * on partition info. 1253 * 1254 * also, note that there are two kinds of buf structures, those with 1255 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1256 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1257 * buffer which has already been mapped into DVMA space. (Not on sun3) 1258 * However, if B_PHYS is not set, then the buffer is a normal system 1259 * buffer which does *not* live in DVMA space. In that case we call 1260 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1261 * 1262 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1263 * as mapped into DVMA space, where as the bp->b_data points to its 1264 * non-DVMA mapping. 1265 * 1266 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1267 * into dvma space, only that it was remapped into the kernel. 1268 * We ALWAYS have to remap the kernel buf into DVMA space. 1269 * (It is done inexpensively, using whole segments!) 1270 */ 1271 1272 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1273 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1274 1275 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1276 if (dbuf == NULL) { /* out of DVMA space */ 1277 printf("%s: warning: out of DVMA space\n", 1278 xycsc->sc_dev.dv_xname); 1279 return (XY_ERR_FAIL); /* XXX: need some sort of 1280 * call-back scheme here? */ 1281 } 1282 1283 /* init iorq and load iopb from it */ 1284 1285 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1286 bp->b_bcount / XYFM_BPS, dbuf, bp); 1287 1288 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1289 1290 /* Instrumentation. */ 1291 disk_busy(&xysc->sc_dk); 1292 1293 return (XY_ERR_AOK); 1294 } 1295 1296 1297 /* 1298 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1299 * if ok. if it fail returns an error code. type is XY_SUB_*. 1300 * 1301 * note: caller frees iorq in all cases except NORM 1302 * 1303 * return value: 1304 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1305 * WAIT: XY_AOK (success), <error-code> (failed) 1306 * POLL: <same as WAIT> 1307 * NOQ : <same as NORM> 1308 * 1309 * there are three sources for i/o requests: 1310 * [1] xystrategy: normal block I/O, using "struct buf" system. 1311 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1312 * [3] open/ioctl: these are I/O requests done in the context of a process, 1313 * and the process should block until they are done. 1314 * 1315 * software state is stored in the iorq structure. each iorq has an 1316 * iopb structure. the hardware understands the iopb structure. 1317 * every command must go through an iopb. a 450 handles one iopb at a 1318 * time, where as a 451 can take them in chains. [the 450 claims it 1319 * can handle chains, but is appears to be buggy...] iopb are allocated 1320 * in DVMA space at boot up time. each disk gets one iopb, and the 1321 * controller gets one (for POLL and WAIT commands). what happens if 1322 * the iopb is busy? for i/o type [1], the buffers are queued at the 1323 * "buff" layer and * picked up later by the interrupt routine. for case 1324 * [2] we can only be blocked if there is a WAIT type I/O request being 1325 * run. since this can only happen when we are crashing, we wait a sec 1326 * and then steal the IOPB. for case [3] the process can sleep 1327 * on the iorq free list until some iopbs are avaliable. 1328 */ 1329 1330 1331 int 1332 xyc_submit_iorq(xycsc, iorq, type) 1333 struct xyc_softc *xycsc; 1334 struct xy_iorq *iorq; 1335 int type; 1336 1337 { 1338 struct xy_iopb *iopb; 1339 u_long iopbaddr; 1340 1341 #ifdef XYC_DEBUG 1342 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1343 xycsc->sc_dev.dv_xname, iorq, type); 1344 #endif 1345 1346 /* first check and see if controller is busy */ 1347 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1348 #ifdef XYC_DEBUG 1349 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1350 #endif 1351 if (type == XY_SUB_NOQ) 1352 return (XY_ERR_FAIL); /* failed */ 1353 switch (type) { 1354 case XY_SUB_NORM: 1355 return XY_ERR_AOK; /* success */ 1356 case XY_SUB_WAIT: 1357 while (iorq->iopb->done == 0) { 1358 sleep(iorq, PRIBIO); 1359 } 1360 return (iorq->errno); 1361 case XY_SUB_POLL: /* steal controller */ 1362 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1363 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1364 panic("xyc_submit_iorq: stuck xyc"); 1365 printf("%s: stole controller\n", 1366 xycsc->sc_dev.dv_xname); 1367 break; 1368 default: 1369 panic("xyc_submit_iorq adding"); 1370 } 1371 } 1372 1373 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1374 if (iopb == NULL) { /* nothing doing? */ 1375 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1376 return(XY_ERR_AOK); 1377 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1378 } 1379 iopbaddr = dvma_kvtopa(iopb, BUS_VME16); 1380 1381 XYC_GO(xycsc->xyc, iopbaddr); 1382 1383 /* command now running, wrap it up */ 1384 switch (type) { 1385 case XY_SUB_NORM: 1386 case XY_SUB_NOQ: 1387 return (XY_ERR_AOK); /* success */ 1388 case XY_SUB_WAIT: 1389 while (iorq->iopb->done == 0) { 1390 sleep(iorq, PRIBIO); 1391 } 1392 return (iorq->errno); 1393 case XY_SUB_POLL: 1394 return (xyc_piodriver(xycsc, iorq)); 1395 default: 1396 panic("xyc_submit_iorq wrap up"); 1397 } 1398 panic("xyc_submit_iorq"); 1399 return 0; /* not reached */ 1400 } 1401 1402 1403 /* 1404 * xyc_chain: build a chain. return dvma address of first element in 1405 * the chain. iorq != NULL: means we only want that item on the chain. 1406 */ 1407 1408 struct xy_iopb * 1409 xyc_chain(xycsc, iorq) 1410 1411 struct xyc_softc *xycsc; 1412 struct xy_iorq *iorq; 1413 1414 { 1415 int togo, chain, hand; 1416 struct xy_iopb *iopb, *prev_iopb; 1417 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1418 1419 /* 1420 * promote control IOPB to the top 1421 */ 1422 if (iorq == NULL) { 1423 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1424 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1425 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1426 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1427 } 1428 /* 1429 * special case: if iorq != NULL then we have a POLL or WAIT request. 1430 * we let these take priority and do them first. 1431 */ 1432 if (iorq) { 1433 xycsc->xy_chain[0] = iorq; 1434 iorq->iopb->chen = 0; 1435 return(iorq->iopb); 1436 } 1437 1438 /* 1439 * NORM case: do round robin and maybe chain (if allowed and possible) 1440 */ 1441 1442 chain = 0; 1443 hand = xycsc->xy_hand; 1444 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1445 1446 for (togo = XYC_MAXIOPB ; 1447 togo > 0 ; 1448 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1449 { 1450 1451 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1452 xycsc->iopbase[hand].done) 1453 continue; /* not ready-for-i/o */ 1454 1455 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1456 iopb = xycsc->xy_chain[chain]->iopb; 1457 iopb->chen = 0; 1458 if (chain != 0) { /* adding a link to a chain? */ 1459 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1460 prev_iopb->chen = 1; 1461 prev_iopb->nxtiopb = 0xffff & 1462 dvma_kvtopa(iopb, BUS_VME16); 1463 } else { /* head of chain */ 1464 iorq = xycsc->xy_chain[chain]; 1465 } 1466 chain++; 1467 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1468 } 1469 return(iorq ? iorq->iopb : NULL); 1470 } 1471 1472 /* 1473 * xyc_piodriver 1474 * 1475 * programmed i/o driver. this function takes over the computer 1476 * and drains off the polled i/o request. it returns the status of the iorq 1477 * the caller is interesting in. 1478 */ 1479 int 1480 xyc_piodriver(xycsc, iorq) 1481 struct xyc_softc *xycsc; 1482 struct xy_iorq *iorq; 1483 1484 { 1485 int nreset = 0; 1486 int retval = 0; 1487 u_long res; 1488 1489 #ifdef XYC_DEBUG 1490 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1491 #endif 1492 1493 while (iorq->iopb->done == 0) { 1494 1495 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1496 1497 /* we expect some progress soon */ 1498 if (res == XY_ERR_FAIL && nreset >= 2) { 1499 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1500 #ifdef XYC_DEBUG 1501 printf("xyc_piodriver: timeout\n"); 1502 #endif 1503 return (XY_ERR_FAIL); 1504 } 1505 if (res == XY_ERR_FAIL) { 1506 if (xyc_reset(xycsc, 0, 1507 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1508 XY_ERR_FAIL, 1509 0) == XY_ERR_FAIL) 1510 return (XY_ERR_FAIL); /* flushes all but POLL 1511 * requests, resets */ 1512 continue; 1513 } 1514 1515 xyc_remove_iorq(xycsc); /* may resubmit request */ 1516 1517 if (iorq->iopb->done == 0) 1518 xyc_start(xycsc, iorq); 1519 } 1520 1521 /* get return value */ 1522 1523 retval = iorq->errno; 1524 1525 #ifdef XYC_DEBUG 1526 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1527 iorq->errno, xyc_e2str(iorq->errno)); 1528 #endif 1529 1530 /* start up any bufs that have queued */ 1531 1532 xyc_start(xycsc, NULL); 1533 1534 return (retval); 1535 } 1536 1537 /* 1538 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1539 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1540 */ 1541 void 1542 xyc_xyreset(xycsc, xysc) 1543 struct xyc_softc *xycsc; 1544 struct xy_softc *xysc; 1545 1546 { 1547 struct xy_iopb tmpiopb; 1548 u_long addr; 1549 int del; 1550 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1551 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1552 xycsc->ciopb->ien = 0; 1553 xycsc->ciopb->com = XYCMD_RST; 1554 xycsc->ciopb->unit = xysc->xy_drive; 1555 addr = dvma_kvtopa(xycsc->ciopb, BUS_VME16); 1556 1557 XYC_GO(xycsc->xyc, addr); 1558 1559 del = XYC_RESETUSEC; 1560 while (del > 0) { 1561 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1562 DELAY(1); 1563 del--; 1564 } 1565 1566 if (del <= 0 || xycsc->ciopb->errs) { 1567 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1568 xyc_e2str(xycsc->ciopb->errno)); 1569 del = xycsc->xyc->xyc_rsetup; 1570 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1571 panic("xyc_reset"); 1572 } else { 1573 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1574 } 1575 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1576 } 1577 1578 1579 /* 1580 * xyc_reset: reset everything: requests are marked as errors except 1581 * a polled request (which is resubmitted) 1582 */ 1583 int 1584 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1585 struct xyc_softc *xycsc; 1586 int quiet, error; 1587 struct xy_iorq *blastmode; 1588 struct xy_softc *xysc; 1589 1590 { 1591 int del = 0, lcv, retval = XY_ERR_AOK; 1592 struct xy_iorq *iorq; 1593 1594 /* soft reset hardware */ 1595 1596 if (!quiet) 1597 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1598 del = xycsc->xyc->xyc_rsetup; 1599 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1600 if (del == XY_ERR_FAIL) { 1601 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1602 retval = XY_ERR_FAIL; 1603 } 1604 if (xysc) 1605 xyc_xyreset(xycsc, xysc); 1606 1607 /* fix queues based on "blast-mode" */ 1608 1609 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1610 iorq = &xycsc->reqs[lcv]; 1611 1612 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1613 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1614 XY_STATE(iorq->mode) != XY_SUB_NORM) 1615 /* is it active? */ 1616 continue; 1617 1618 if (blastmode == XY_RSET_ALL || 1619 blastmode != iorq) { 1620 /* failed */ 1621 iorq->errno = error; 1622 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1623 switch (XY_STATE(iorq->mode)) { 1624 case XY_SUB_NORM: 1625 iorq->buf->b_error = EIO; 1626 iorq->buf->b_flags |= B_ERROR; 1627 iorq->buf->b_resid = 1628 iorq->sectcnt * XYFM_BPS; 1629 /* Sun3: map/unmap regardless of B_PHYS */ 1630 dvma_mapout(iorq->dbufbase, 1631 iorq->buf->b_bcount); 1632 iorq->xy->xyq.b_actf = 1633 iorq->buf->b_actf; 1634 disk_unbusy(&iorq->xy->sc_dk, 1635 (iorq->buf->b_bcount - 1636 iorq->buf->b_resid)); 1637 biodone(iorq->buf); 1638 iorq->mode = XY_SUB_FREE; 1639 break; 1640 case XY_SUB_WAIT: 1641 wakeup(iorq); 1642 case XY_SUB_POLL: 1643 iorq->mode = 1644 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1645 break; 1646 } 1647 1648 } else { 1649 1650 /* resubmit, no need to do anything here */ 1651 } 1652 } 1653 1654 /* 1655 * now, if stuff is waiting, start it. 1656 * since we just reset it should go 1657 */ 1658 xyc_start(xycsc, NULL); 1659 1660 return (retval); 1661 } 1662 1663 /* 1664 * xyc_start: start waiting buffers 1665 */ 1666 1667 void 1668 xyc_start(xycsc, iorq) 1669 struct xyc_softc *xycsc; 1670 struct xy_iorq *iorq; 1671 1672 { 1673 int lcv; 1674 struct xy_softc *xy; 1675 1676 if (iorq == NULL) { 1677 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1678 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1679 if (xy->xyq.b_actf == NULL) continue; 1680 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1681 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1682 } 1683 } 1684 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1685 } 1686 1687 /* 1688 * xyc_remove_iorq: remove "done" IOPB's. 1689 */ 1690 1691 int 1692 xyc_remove_iorq(xycsc) 1693 struct xyc_softc *xycsc; 1694 1695 { 1696 int errno, rq, comm, errs; 1697 struct xyc *xyc = xycsc->xyc; 1698 u_long addr; 1699 struct xy_iopb *iopb; 1700 struct xy_iorq *iorq; 1701 struct buf *bp; 1702 1703 if (xyc->xyc_csr & XYC_DERR) { 1704 /* 1705 * DOUBLE ERROR: should never happen under normal use. This 1706 * error is so bad, you can't even tell which IOPB is bad, so 1707 * we dump them all. 1708 */ 1709 errno = XY_ERR_DERR; 1710 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1711 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1712 printf("%s: soft reset failed!\n", 1713 xycsc->sc_dev.dv_xname); 1714 panic("xyc_remove_iorq: controller DEAD"); 1715 } 1716 return (XY_ERR_AOK); 1717 } 1718 1719 /* 1720 * get iopb that is done, loop down the chain 1721 */ 1722 1723 if (xyc->xyc_csr & XYC_ERR) { 1724 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1725 } 1726 if (xyc->xyc_csr & XYC_IPND) { 1727 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1728 } 1729 1730 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1731 iorq = xycsc->xy_chain[rq]; 1732 if (iorq == NULL) break; /* done ! */ 1733 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1734 continue; /* free, or done */ 1735 iopb = iorq->iopb; 1736 if (iopb->done == 0) 1737 continue; /* not done yet */ 1738 1739 comm = iopb->com; 1740 errs = iopb->errs; 1741 1742 if (errs) 1743 iorq->errno = iopb->errno; 1744 else 1745 iorq->errno = 0; 1746 1747 /* handle non-fatal errors */ 1748 1749 if (errs && 1750 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1751 continue; /* AOK: we resubmitted it */ 1752 1753 1754 /* this iorq is now done (hasn't been restarted or anything) */ 1755 1756 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1757 xyc_perror(iorq, iopb, 0); 1758 1759 /* now, if read/write check to make sure we got all the data 1760 * we needed. (this may not be the case if we got an error in 1761 * the middle of a multisector request). */ 1762 1763 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1764 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1765 /* we just successfully processed a bad144 sector 1766 * note: if we are in bad 144 mode, the pointers have 1767 * been advanced already (see above) and are pointing 1768 * at the bad144 sector. to exit bad144 mode, we 1769 * must advance the pointers 1 sector and issue a new 1770 * request if there are still sectors left to process 1771 * 1772 */ 1773 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1774 1775 /* exit b144 mode */ 1776 iorq->mode = iorq->mode & (~XY_MODE_B144); 1777 1778 if (iorq->sectcnt) { /* more to go! */ 1779 iorq->lasterror = iorq->errno = iopb->errno = 0; 1780 iopb->errs = iopb->done = 0; 1781 iorq->tries = 0; 1782 iopb->scnt = iorq->sectcnt; 1783 iopb->cyl = iorq->blockno / 1784 iorq->xy->sectpercyl; 1785 iopb->head = 1786 (iorq->blockno / iorq->xy->nhead) % 1787 iorq->xy->nhead; 1788 iopb->sect = iorq->blockno % XYFM_BPS; 1789 addr = dvma_kvtopa(iorq->dbuf, BUS_VME16); 1790 iopb->dataa = (addr & 0xffff); 1791 iopb->datar = ((addr & 0xff0000) >> 16); 1792 /* will resubit at end */ 1793 continue; 1794 } 1795 } 1796 /* final cleanup, totally done with this request */ 1797 1798 switch (XY_STATE(iorq->mode)) { 1799 case XY_SUB_NORM: 1800 bp = iorq->buf; 1801 if (errs) { 1802 bp->b_error = EIO; 1803 bp->b_flags |= B_ERROR; 1804 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1805 } else { 1806 bp->b_resid = 0; /* done */ 1807 } 1808 /* Sun3: map/unmap regardless of B_PHYS */ 1809 dvma_mapout(iorq->dbufbase, 1810 iorq->buf->b_bcount); 1811 iorq->xy->xyq.b_actf = bp->b_actf; 1812 disk_unbusy(&iorq->xy->sc_dk, 1813 (bp->b_bcount - bp->b_resid)); 1814 iorq->mode = XY_SUB_FREE; 1815 biodone(bp); 1816 break; 1817 case XY_SUB_WAIT: 1818 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1819 wakeup(iorq); 1820 break; 1821 case XY_SUB_POLL: 1822 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1823 break; 1824 } 1825 } 1826 1827 return (XY_ERR_AOK); 1828 } 1829 1830 /* 1831 * xyc_perror: print error. 1832 * - if still_trying is true: we got an error, retried and got a 1833 * different error. in that case lasterror is the old error, 1834 * and errno is the new one. 1835 * - if still_trying is not true, then if we ever had an error it 1836 * is in lasterror. also, if iorq->errno == 0, then we recovered 1837 * from that error (otherwise iorq->errno == iorq->lasterror). 1838 */ 1839 void 1840 xyc_perror(iorq, iopb, still_trying) 1841 struct xy_iorq *iorq; 1842 struct xy_iopb *iopb; 1843 int still_trying; 1844 1845 { 1846 1847 int error = iorq->lasterror; 1848 1849 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1850 : iorq->xyc->sc_dev.dv_xname); 1851 if (iorq->buf) 1852 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1853 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1854 printf("%s %d/%d/%d: ", 1855 (iopb->com == XYCMD_RD) ? "read" : "write", 1856 iopb->cyl, iopb->head, iopb->sect); 1857 printf("%s", xyc_e2str(error)); 1858 1859 if (still_trying) 1860 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1861 else 1862 if (iorq->errno == 0) 1863 printf(" [recovered in %d tries]", iorq->tries); 1864 1865 printf("\n"); 1866 } 1867 1868 /* 1869 * xyc_error: non-fatal error encountered... recover. 1870 * return AOK if resubmitted, return FAIL if this iopb is done 1871 */ 1872 int 1873 xyc_error(xycsc, iorq, iopb, comm) 1874 struct xyc_softc *xycsc; 1875 struct xy_iorq *iorq; 1876 struct xy_iopb *iopb; 1877 int comm; 1878 1879 { 1880 int errno = iorq->errno; 1881 int erract = xyc_entoact(errno); 1882 int oldmode, advance, i; 1883 1884 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1885 oldmode = iorq->mode; 1886 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1887 /* make xyc_start ignore us */ 1888 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1889 iorq->mode = oldmode; 1890 } 1891 /* check for read/write to a sector in bad144 table if bad: redirect 1892 * request to bad144 area */ 1893 1894 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1895 (iorq->mode & XY_MODE_B144) == 0) { 1896 advance = iorq->sectcnt - iopb->scnt; 1897 XYC_ADVANCE(iorq, advance); 1898 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1899 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1900 iorq->blockno % iorq->xy->nsect)) != -1) { 1901 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1902 * redirect */ 1903 iopb->errno = iopb->done = iopb->errs = 0; 1904 iopb->scnt = 1; 1905 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1906 /* second to last acyl */ 1907 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1908 * standard */ 1909 iopb->head = i / iorq->xy->nhead; 1910 iopb->sect = i % iorq->xy->nhead; 1911 /* will resubmit when we come out of remove_iorq */ 1912 return (XY_ERR_AOK); /* recovered! */ 1913 } 1914 } 1915 1916 /* 1917 * it isn't a bad144 sector, must be real error! see if we can retry 1918 * it? 1919 */ 1920 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1921 xyc_perror(iorq, iopb, 1); /* inform of error state 1922 * change */ 1923 iorq->lasterror = errno; 1924 1925 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1926 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1927 iorq->tries++; 1928 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1929 /* will resubmit at end of remove_iorq */ 1930 return (XY_ERR_AOK); /* recovered! */ 1931 } 1932 1933 /* failed to recover from this error */ 1934 return (XY_ERR_FAIL); 1935 } 1936 1937 /* 1938 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1939 */ 1940 void 1941 xyc_tick(arg) 1942 void *arg; 1943 1944 { 1945 struct xyc_softc *xycsc = arg; 1946 int lcv, s, reset = 0; 1947 1948 /* reduce ttl for each request if one goes to zero, reset xyc */ 1949 s = splbio(); 1950 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1951 if (xycsc->reqs[lcv].mode == 0 || 1952 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1953 continue; 1954 xycsc->reqs[lcv].ttl--; 1955 if (xycsc->reqs[lcv].ttl == 0) 1956 reset = 1; 1957 } 1958 if (reset) { 1959 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1960 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1961 } 1962 splx(s); 1963 1964 /* until next time */ 1965 1966 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1967 } 1968 1969 /* 1970 * xyc_ioctlcmd: this function provides a user level interface to the 1971 * controller via ioctl. this allows "format" programs to be written 1972 * in user code, and is also useful for some debugging. we return 1973 * an error code. called at user priority. 1974 * 1975 * XXX missing a few commands (see the 7053 driver for ideas) 1976 */ 1977 int 1978 xyc_ioctlcmd(xy, dev, xio) 1979 struct xy_softc *xy; 1980 dev_t dev; 1981 struct xd_iocmd *xio; 1982 1983 { 1984 int s, err, rqno; 1985 void * dvmabuf = NULL; 1986 struct xyc_softc *xycsc; 1987 1988 /* check sanity of requested command */ 1989 1990 switch (xio->cmd) { 1991 1992 case XYCMD_NOP: /* no op: everything should be zero */ 1993 if (xio->subfn || xio->dptr || xio->dlen || 1994 xio->block || xio->sectcnt) 1995 return (EINVAL); 1996 break; 1997 1998 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1999 case XYCMD_WR: 2000 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2001 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2002 return (EINVAL); 2003 break; 2004 2005 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2006 return (EINVAL); 2007 2008 break; 2009 2010 default: 2011 return (EINVAL);/* ??? */ 2012 } 2013 2014 /* create DVMA buffer for request if needed */ 2015 2016 if (xio->dlen) { 2017 dvmabuf = dvma_malloc(xio->dlen); 2018 if (xio->cmd == XYCMD_WR) { 2019 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2020 if (err) { 2021 dvma_free(dvmabuf, xio->dlen); 2022 return (err); 2023 } 2024 } 2025 } 2026 /* do it! */ 2027 2028 err = 0; 2029 xycsc = xy->parent; 2030 s = splbio(); 2031 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2032 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2033 if (rqno == XY_ERR_FAIL) { 2034 err = EIO; 2035 goto done; 2036 } 2037 xio->errno = xycsc->ciorq->errno; 2038 xio->tries = xycsc->ciorq->tries; 2039 XYC_DONE(xycsc, err); 2040 2041 if (xio->cmd == XYCMD_RD) 2042 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2043 2044 done: 2045 splx(s); 2046 if (dvmabuf) 2047 dvma_free(dvmabuf, xio->dlen); 2048 return (err); 2049 } 2050 2051 /* 2052 * xyc_e2str: convert error code number into an error string 2053 */ 2054 char * 2055 xyc_e2str(no) 2056 int no; 2057 { 2058 switch (no) { 2059 case XY_ERR_FAIL: 2060 return ("Software fatal error"); 2061 case XY_ERR_DERR: 2062 return ("DOUBLE ERROR"); 2063 case XY_ERR_AOK: 2064 return ("Successful completion"); 2065 case XY_ERR_IPEN: 2066 return("Interrupt pending"); 2067 case XY_ERR_BCFL: 2068 return("Busy conflict"); 2069 case XY_ERR_TIMO: 2070 return("Operation timeout"); 2071 case XY_ERR_NHDR: 2072 return("Header not found"); 2073 case XY_ERR_HARD: 2074 return("Hard ECC error"); 2075 case XY_ERR_ICYL: 2076 return("Illegal cylinder address"); 2077 case XY_ERR_ISEC: 2078 return("Illegal sector address"); 2079 case XY_ERR_SMAL: 2080 return("Last sector too small"); 2081 case XY_ERR_SACK: 2082 return("Slave ACK error (non-existent memory)"); 2083 case XY_ERR_CHER: 2084 return("Cylinder and head/header error"); 2085 case XY_ERR_SRTR: 2086 return("Auto-seek retry successful"); 2087 case XY_ERR_WPRO: 2088 return("Write-protect error"); 2089 case XY_ERR_UIMP: 2090 return("Unimplemented command"); 2091 case XY_ERR_DNRY: 2092 return("Drive not ready"); 2093 case XY_ERR_SZER: 2094 return("Sector count zero"); 2095 case XY_ERR_DFLT: 2096 return("Drive faulted"); 2097 case XY_ERR_ISSZ: 2098 return("Illegal sector size"); 2099 case XY_ERR_SLTA: 2100 return("Self test A"); 2101 case XY_ERR_SLTB: 2102 return("Self test B"); 2103 case XY_ERR_SLTC: 2104 return("Self test C"); 2105 case XY_ERR_SOFT: 2106 return("Soft ECC error"); 2107 case XY_ERR_SFOK: 2108 return("Soft ECC error recovered"); 2109 case XY_ERR_IHED: 2110 return("Illegal head"); 2111 case XY_ERR_DSEQ: 2112 return("Disk sequencer error"); 2113 case XY_ERR_SEEK: 2114 return("Seek error"); 2115 default: 2116 return ("Unknown error"); 2117 } 2118 } 2119 2120 int 2121 xyc_entoact(errno) 2122 2123 int errno; 2124 2125 { 2126 switch (errno) { 2127 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2128 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2129 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2130 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2131 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2132 2133 return(XY_ERA_PROG); /* program error ! */ 2134 2135 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2136 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2137 case XY_ERR_SOFT: 2138 2139 return(XY_ERA_HARD); /* hard error, retry */ 2140 2141 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2142 2143 return(XY_ERA_RSET); /* hard error reset */ 2144 2145 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2146 2147 return(XY_ERA_SOFT); /* an FYI error */ 2148 2149 case XY_ERR_WPRO: 2150 2151 return(XY_ERA_WPRO); /* write protect */ 2152 } 2153 2154 return(XY_ERA_PROG); /* ??? */ 2155 } 2156
Indexes created Mon Sep 29 21:09:56 GMT 2025