xy.c revision 1.19
1 /* $NetBSD: xy.c,v 1.19 1998/01/26 21:03:46 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: &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 <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 * cfattach's: device driver interface to autoconfig 189 */ 190 191 struct cfattach xyc_ca = { 192 sizeof(struct xyc_softc), xycmatch, xycattach 193 }; 194 195 struct cfattach xy_ca = { 196 sizeof(struct xy_softc), xymatch, xyattach 197 }; 198 199 extern struct cfdriver xy_cd; 200 201 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 202 int driveno; /* unit number */ 203 }; 204 205 /* 206 * dkdriver 207 */ 208 209 struct dkdriver xydkdriver = { xystrategy }; 210 211 /* 212 * start: disk label fix code (XXX) 213 */ 214 215 static void *xy_labeldata; 216 217 static void 218 xydummystrat(bp) 219 struct buf *bp; 220 { 221 if (bp->b_bcount != XYFM_BPS) 222 panic("xydummystrat"); 223 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 224 bp->b_flags |= B_DONE; 225 bp->b_flags &= ~B_BUSY; 226 } 227 228 int 229 xygetdisklabel(xy, b) 230 struct xy_softc *xy; 231 void *b; 232 { 233 char *err; 234 struct sun_disklabel *sdl; 235 236 /* We already have the label data in `b'; setup for dummy strategy */ 237 xy_labeldata = b; 238 239 /* Required parameter for readdisklabel() */ 240 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 241 242 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 243 xydummystrat, 244 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 245 if (err) { 246 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 247 return(XY_ERR_FAIL); 248 } 249 250 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 251 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 252 if (sdl->sl_magic == SUN_DKMAGIC) 253 xy->pcyl = sdl->sl_pcyl; 254 else { 255 printf("%s: WARNING: no `pcyl' in disk label.\n", 256 xy->sc_dev.dv_xname); 257 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 258 xy->sc_dk.dk_label->d_acylinders; 259 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 260 xy->sc_dev.dv_xname, xy->pcyl); 261 } 262 263 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 264 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 265 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 266 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 267 xy->sectpercyl = xy->nhead * xy->nsect; 268 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 269 * sun->bsd */ 270 return(XY_ERR_AOK); 271 } 272 273 /* 274 * end: disk label fix code (XXX) 275 */ 276 277 /* 278 * a u t o c o n f i g f u n c t i o n s 279 */ 280 281 /* 282 * xycmatch: determine if xyc is present or not. we do a 283 * soft reset to detect the xyc. 284 */ 285 static int 286 xycmatch(parent, cf, aux) 287 struct device *parent; 288 struct cfdata *cf; 289 void *aux; 290 { 291 struct confargs *ca = aux; 292 293 /* No default VME address. */ 294 if (ca->ca_paddr == -1) 295 return (0); 296 297 /* Make sure something is there... */ 298 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 299 return (0); 300 301 /* Default interrupt priority. */ 302 if (ca->ca_intpri == -1) 303 ca->ca_intpri = 2; 304 305 return (1); 306 } 307 308 /* 309 * xycattach: attach controller 310 */ 311 static void 312 xycattach(parent, self, aux) 313 struct device *parent, *self; 314 void *aux; 315 { 316 struct xyc_softc *xyc = (void *) self; 317 struct confargs *ca = aux; 318 struct xyc_attach_args xa; 319 int lcv, err, res, pbsz; 320 void *tmp, *tmp2; 321 u_long ultmp; 322 323 /* get addressing and intr level stuff from autoconfig and load it 324 * into our xyc_softc. */ 325 326 xyc->xyc = (struct xyc *) 327 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 328 xyc->bustype = ca->ca_bustype; 329 xyc->ipl = ca->ca_intpri; 330 xyc->vector = ca->ca_intvec; 331 xyc->no_ols = 0; /* XXX should be from config */ 332 333 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 334 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 335 336 /* 337 * allocate and zero buffers 338 * check boundaries of the KVA's ... all IOPBs must reside in 339 * the same 64K region. 340 */ 341 342 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 343 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 344 ultmp = (u_long) tmp; 345 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 346 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 347 dvma_free(tmp2, pbsz); 348 ultmp = (u_long) tmp; 349 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 350 printf("%s: can't alloc IOPB mem in 64K\n", 351 xyc->sc_dev.dv_xname); 352 return; 353 } 354 } 355 bzero(tmp, pbsz); 356 xyc->iopbase = tmp; 357 xyc->dvmaiopb = (struct xy_iopb *) 358 dvma_kvtopa(xyc->iopbase, xyc->bustype); 359 xyc->reqs = (struct xy_iorq *) 360 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 361 if (xyc->reqs == NULL) 362 panic("xyc malloc"); 363 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 364 365 /* 366 * init iorq to iopb pointers, and non-zero fields in the 367 * iopb which never change. 368 */ 369 370 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 371 xyc->xy_chain[lcv] = NULL; 372 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 373 xyc->iopbase[lcv].asr = 1; /* always the same */ 374 xyc->iopbase[lcv].eef = 1; /* always the same */ 375 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 376 xyc->iopbase[lcv].aud = 1; /* always the same */ 377 xyc->iopbase[lcv].relo = 1; /* always the same */ 378 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 379 } 380 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 381 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 382 xyc->xy_hand = 0; 383 384 /* read controller parameters and insure we have a 450/451 */ 385 386 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 387 res = xyc->ciopb->ctyp; 388 XYC_DONE(xyc, err); 389 if (res != XYCT_450) { 390 if (err) 391 printf(": %s: ", xyc_e2str(err)); 392 printf(": doesn't identify as a 450/451\n"); 393 return; 394 } 395 printf(": Xylogics 450/451"); 396 if (xyc->no_ols) 397 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 398 printf("\n"); 399 if (err) { 400 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 401 xyc_e2str(err)); 402 return; 403 } 404 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 405 printf("%s: 24 bit addressing turned off\n", 406 xyc->sc_dev.dv_xname); 407 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 408 printf("to enable 24 bit mode and this driver\n"); 409 return; 410 } 411 412 /* link in interrupt with higher level software */ 413 isr_add_vectored(xycintr, (void *)xyc, 414 ca->ca_intpri, ca->ca_intvec); 415 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 416 417 /* now we must look for disks using autoconfig */ 418 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 419 (void) config_found(self, (void *) &xa, xyc_print); 420 421 /* start the watchdog clock */ 422 timeout(xyc_tick, xyc, XYC_TICKCNT); 423 } 424 425 static int 426 xyc_print(aux, name) 427 void *aux; 428 const char *name; 429 { 430 struct xyc_attach_args *xa = aux; 431 432 if (name != NULL) 433 printf("%s: ", name); 434 435 if (xa->driveno != -1) 436 printf(" drive %d", xa->driveno); 437 438 return UNCONF; 439 } 440 441 /* 442 * xymatch: probe for disk. 443 * 444 * note: we almost always say disk is present. this allows us to 445 * spin up and configure a disk after the system is booted (we can 446 * call xyattach!). Also, wire down the relationship between the 447 * xy* and xyc* devices, to simplify boot device identification. 448 */ 449 static int 450 xymatch(parent, cf, aux) 451 struct device *parent; 452 struct cfdata *cf; 453 void *aux; 454 { 455 struct xyc_attach_args *xa = aux; 456 int xy_unit; 457 458 /* Match only on the "wired-down" controller+disk. */ 459 xy_unit = parent->dv_unit * 2 + xa->driveno; 460 if (cf->cf_unit != xy_unit) 461 return (0); 462 463 return (1); 464 } 465 466 /* 467 * xyattach: attach a disk. 468 */ 469 static void 470 xyattach(parent, self, aux) 471 struct device *parent, *self; 472 void *aux; 473 { 474 struct xy_softc *xy = (void *) self; 475 struct xyc_softc *xyc = (void *) parent; 476 struct xyc_attach_args *xa = aux; 477 478 printf("\n"); 479 480 /* 481 * Always re-initialize the disk structure. We want statistics 482 * to start with a clean slate. 483 */ 484 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 485 xy->sc_dk.dk_driver = &xydkdriver; 486 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 487 488 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 489 xy->flags = 0; 490 xy->parent = xyc; 491 492 /* init queue of waiting bufs */ 493 xy->xyq.b_active = 0; 494 xy->xyq.b_actf = 0; 495 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 496 xy->xyrq = &xyc->reqs[xa->driveno]; 497 498 xy->xy_drive = xa->driveno; 499 xyc->sc_drives[xa->driveno] = xy; 500 501 /* Do init work common to attach and open. */ 502 xy_init(xy); 503 dk_establish(&xy->sc_dk, &xy->sc_dev); 504 } 505 506 /* 507 * end of autoconfig functions 508 */ 509 510 /* 511 * Initialize a disk. This can be called from both autoconf and 512 * also from xyopen/xystrategy. 513 */ 514 static void 515 xy_init(xy) 516 struct xy_softc *xy; 517 { 518 struct xyc_softc *xyc; 519 struct dkbad *dkb; 520 void *dvmabuf; 521 int err, spt, mb, blk, lcv, fullmode, newstate; 522 extern int cold; 523 524 xyc = xy->parent; 525 xy->state = XY_DRIVE_ATTACHING; 526 newstate = XY_DRIVE_UNKNOWN; 527 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 528 dvmabuf = dvma_malloc(XYFM_BPS); 529 530 /* first try and reset the drive */ 531 532 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 533 XYC_DONE(xyc, err); 534 if (err == XY_ERR_DNRY) { 535 printf("%s: drive %d: off-line\n", 536 xy->sc_dev.dv_xname, xy->xy_drive); 537 goto done; 538 } 539 if (err) { 540 printf("%s: ERROR 0x%02x (%s)\n", 541 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 542 goto done; 543 } 544 printf("%s: drive %d ready", 545 xy->sc_dev.dv_xname, xy->xy_drive); 546 547 /* 548 * now set drive parameters (to semi-bogus values) so we can read the 549 * disk label. 550 */ 551 xy->pcyl = xy->ncyl = 1; 552 xy->acyl = 0; 553 xy->nhead = 1; 554 xy->nsect = 1; 555 xy->sectpercyl = 1; 556 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 557 xy->dkb.bt_bad[lcv].bt_cyl = 558 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 559 560 /* read disk label */ 561 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 562 xy->drive_type++) { 563 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 564 dvmabuf, fullmode); 565 XYC_DONE(xyc, err); 566 if (err == XY_ERR_AOK) break; 567 } 568 569 if (err != XY_ERR_AOK) { 570 printf("%s: reading disk label failed: %s\n", 571 xy->sc_dev.dv_xname, xyc_e2str(err)); 572 goto done; 573 } 574 printf("%s: drive type %d\n", 575 xy->sc_dev.dv_xname, xy->drive_type); 576 577 newstate = XY_DRIVE_NOLABEL; 578 579 xy->hw_spt = spt = 0; /* XXX needed ? */ 580 /* Attach the disk: must be before getdisklabel to malloc label */ 581 disk_attach(&xy->sc_dk); 582 583 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 584 goto done; 585 586 /* inform the user of what is up */ 587 printf("%s: <%s>, pcyl %d\n", 588 xy->sc_dev.dv_xname, 589 (char *)dvmabuf, xy->pcyl); 590 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 591 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 592 xy->sc_dev.dv_xname, mb, 593 xy->ncyl, xy->nhead, xy->nsect); 594 595 /* 596 * 450/451 stupidity: the drive type is encoded into the format 597 * of the disk. the drive type in the IOPB must match the drive 598 * type in the format, or you will not be able to do I/O to the 599 * disk (you get header not found errors). if you have two drives 600 * of different sizes that have the same drive type in their 601 * formatting then you are out of luck. 602 * 603 * this problem was corrected in the 753/7053. 604 */ 605 606 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 607 struct xy_softc *oxy; 608 609 oxy = xyc->sc_drives[lcv]; 610 if (oxy == NULL || oxy == xy) continue; 611 if (oxy->drive_type != xy->drive_type) continue; 612 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 613 xy->nhead != oxy->nhead) { 614 printf("%s: %s and %s must be the same size!\n", 615 xyc->sc_dev.dv_xname, 616 xy ->sc_dev.dv_xname, 617 oxy->sc_dev.dv_xname); 618 panic("xy drive size mismatch"); 619 } 620 } 621 622 623 /* now set the real drive parameters! */ 624 blk = (xy->nsect - 1) + 625 ((xy->nhead - 1) * xy->nsect) + 626 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 627 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 628 XYC_DONE(xyc, err); 629 if (err) { 630 printf("%s: write drive size failed: %s\n", 631 xy->sc_dev.dv_xname, xyc_e2str(err)); 632 goto done; 633 } 634 newstate = XY_DRIVE_ONLINE; 635 636 /* 637 * read bad144 table. this table resides on the first sector of the 638 * last track of the disk (i.e. second cyl of "acyl" area). 639 */ 640 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 641 /* last cyl */ 642 (xy->nhead - 1) * xy->nsect; /* last head */ 643 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 644 dvmabuf, fullmode); 645 XYC_DONE(xyc, err); 646 if (err) { 647 printf("%s: reading bad144 failed: %s\n", 648 xy->sc_dev.dv_xname, xyc_e2str(err)); 649 goto done; 650 } 651 652 /* check dkbad for sanity */ 653 dkb = (struct dkbad *) dvmabuf; 654 for (lcv = 0; lcv < 126; lcv++) { 655 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 656 dkb->bt_bad[lcv].bt_cyl == 0) && 657 dkb->bt_bad[lcv].bt_trksec == 0xffff) 658 continue; /* blank */ 659 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 660 break; 661 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 662 break; 663 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 664 break; 665 } 666 if (lcv != 126) { 667 printf("%s: warning: invalid bad144 sector!\n", 668 xy->sc_dev.dv_xname); 669 } else { 670 bcopy(dvmabuf, &xy->dkb, XYFM_BPS); 671 } 672 673 done: 674 xy->state = newstate; 675 dvma_free(dvmabuf, XYFM_BPS); 676 } 677 678 /* 679 * { b , c } d e v s w f u n c t i o n s 680 */ 681 682 /* 683 * xyclose: close device 684 */ 685 int 686 xyclose(dev, flag, fmt, p) 687 dev_t dev; 688 int flag, fmt; 689 struct proc *p; 690 { 691 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 692 int part = DISKPART(dev); 693 694 /* clear mask bits */ 695 696 switch (fmt) { 697 case S_IFCHR: 698 xy->sc_dk.dk_copenmask &= ~(1 << part); 699 break; 700 case S_IFBLK: 701 xy->sc_dk.dk_bopenmask &= ~(1 << part); 702 break; 703 } 704 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 705 706 return 0; 707 } 708 709 /* 710 * xydump: crash dump system 711 */ 712 int 713 xydump(dev, blkno, va, sz) 714 dev_t dev; 715 daddr_t blkno; 716 caddr_t va; 717 size_t sz; 718 { 719 int unit, part; 720 struct xy_softc *xy; 721 722 unit = DISKUNIT(dev); 723 if (unit >= xy_cd.cd_ndevs) 724 return ENXIO; 725 part = DISKPART(dev); 726 727 xy = xy_cd.cd_devs[unit]; 728 729 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 730 'a' + part); 731 732 return ENXIO; 733 734 /* outline: globals: "dumplo" == sector number of partition to start 735 * dump at (convert to physical sector with partition table) 736 * "dumpsize" == size of dump in clicks "physmem" == size of physical 737 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 738 * physmem) 739 * 740 * dump a copy of physical memory to the dump device starting at sector 741 * "dumplo" in the swap partition (make sure > 0). map in pages as 742 * we go. use polled I/O. 743 * 744 * XXX how to handle NON_CONTIG? 745 */ 746 } 747 748 /* 749 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 750 */ 751 int 752 xyioctl(dev, command, addr, flag, p) 753 dev_t dev; 754 u_long command; 755 caddr_t addr; 756 int flag; 757 struct proc *p; 758 759 { 760 struct xy_softc *xy; 761 struct xd_iocmd *xio; 762 int error, s, unit; 763 764 unit = DISKUNIT(dev); 765 766 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 767 return (ENXIO); 768 769 /* switch on ioctl type */ 770 771 switch (command) { 772 case DIOCSBAD: /* set bad144 info */ 773 if ((flag & FWRITE) == 0) 774 return EBADF; 775 s = splbio(); 776 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 777 splx(s); 778 return 0; 779 780 case DIOCGDINFO: /* get disk label */ 781 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 782 return 0; 783 784 case DIOCGPART: /* get partition info */ 785 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 786 ((struct partinfo *) addr)->part = 787 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 788 return 0; 789 790 case DIOCSDINFO: /* set disk label */ 791 if ((flag & FWRITE) == 0) 792 return EBADF; 793 error = setdisklabel(xy->sc_dk.dk_label, 794 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 795 xy->sc_dk.dk_cpulabel); 796 if (error == 0) { 797 if (xy->state == XY_DRIVE_NOLABEL) 798 xy->state = XY_DRIVE_ONLINE; 799 } 800 return error; 801 802 case DIOCWLABEL: /* change write status of disk label */ 803 if ((flag & FWRITE) == 0) 804 return EBADF; 805 if (*(int *) addr) 806 xy->flags |= XY_WLABEL; 807 else 808 xy->flags &= ~XY_WLABEL; 809 return 0; 810 811 case DIOCWDINFO: /* write disk label */ 812 if ((flag & FWRITE) == 0) 813 return EBADF; 814 error = setdisklabel(xy->sc_dk.dk_label, 815 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 816 xy->sc_dk.dk_cpulabel); 817 if (error == 0) { 818 if (xy->state == XY_DRIVE_NOLABEL) 819 xy->state = XY_DRIVE_ONLINE; 820 821 /* Simulate opening partition 0 so write succeeds. */ 822 xy->sc_dk.dk_openmask |= (1 << 0); 823 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 824 xystrategy, xy->sc_dk.dk_label, 825 xy->sc_dk.dk_cpulabel); 826 xy->sc_dk.dk_openmask = 827 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 828 } 829 return error; 830 831 case DIOSXDCMD: 832 xio = (struct xd_iocmd *) addr; 833 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 834 return (error); 835 return (xyc_ioctlcmd(xy, dev, xio)); 836 837 default: 838 return ENOTTY; 839 } 840 } 841 842 /* 843 * xyopen: open drive 844 */ 845 int 846 xyopen(dev, flag, fmt, p) 847 dev_t dev; 848 int flag, fmt; 849 struct proc *p; 850 { 851 int err, unit, part, s; 852 struct xy_softc *xy; 853 854 /* first, could it be a valid target? */ 855 unit = DISKUNIT(dev); 856 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 857 return (ENXIO); 858 part = DISKPART(dev); 859 err = 0; 860 861 /* 862 * If some other processing is doing init, sleep. 863 */ 864 s = splbio(); 865 while (xy->state == XY_DRIVE_ATTACHING) { 866 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 867 err = EINTR; 868 goto done; 869 } 870 } 871 /* Do we need to init the drive? */ 872 if (xy->state == XY_DRIVE_UNKNOWN) { 873 xy_init(xy); 874 wakeup(&xy->state); 875 } 876 /* Was the init successful? */ 877 if (xy->state == XY_DRIVE_UNKNOWN) { 878 err = EIO; 879 goto done; 880 } 881 882 /* check for partition */ 883 if (part != RAW_PART && 884 (part >= xy->sc_dk.dk_label->d_npartitions || 885 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 886 err = ENXIO; 887 goto done; 888 } 889 890 /* set open masks */ 891 switch (fmt) { 892 case S_IFCHR: 893 xy->sc_dk.dk_copenmask |= (1 << part); 894 break; 895 case S_IFBLK: 896 xy->sc_dk.dk_bopenmask |= (1 << part); 897 break; 898 } 899 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 900 901 done: 902 splx(s); 903 return (err); 904 } 905 906 int 907 xyread(dev, uio, flags) 908 dev_t dev; 909 struct uio *uio; 910 int flags; 911 { 912 913 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 914 } 915 916 int 917 xywrite(dev, uio, flags) 918 dev_t dev; 919 struct uio *uio; 920 int flags; 921 { 922 923 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 924 } 925 926 927 /* 928 * xysize: return size of a partition for a dump 929 */ 930 931 int 932 xysize(dev) 933 dev_t dev; 934 935 { 936 struct xy_softc *xysc; 937 int unit, part, size, omask; 938 939 /* valid unit? */ 940 unit = DISKUNIT(dev); 941 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 942 return (-1); 943 944 part = DISKPART(dev); 945 omask = xysc->sc_dk.dk_openmask & (1 << part); 946 947 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 948 return (-1); 949 950 /* do it */ 951 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 952 size = -1; /* only give valid size for swap partitions */ 953 else 954 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 955 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 956 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 957 return (-1); 958 return (size); 959 } 960 961 /* 962 * xystrategy: buffering system interface to xy. 963 */ 964 void 965 xystrategy(bp) 966 struct buf *bp; 967 968 { 969 struct xy_softc *xy; 970 int s, unit; 971 972 unit = DISKUNIT(bp->b_dev); 973 974 /* check for live device */ 975 976 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 977 bp->b_blkno < 0 || 978 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 979 bp->b_error = EINVAL; 980 goto bad; 981 } 982 983 /* There should always be an open first. */ 984 if (xy->state == XY_DRIVE_UNKNOWN) { 985 bp->b_error = EIO; 986 goto bad; 987 } 988 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 989 /* no I/O to unlabeled disks, unless raw partition */ 990 bp->b_error = EIO; 991 goto bad; 992 } 993 /* short circuit zero length request */ 994 995 if (bp->b_bcount == 0) 996 goto done; 997 998 /* check bounds with label (disksubr.c). Determine the size of the 999 * transfer, and make sure it is within the boundaries of the 1000 * partition. Adjust transfer if needed, and signal errors or early 1001 * completion. */ 1002 1003 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1004 (xy->flags & XY_WLABEL) != 0) <= 0) 1005 goto done; 1006 1007 /* 1008 * now we know we have a valid buf structure that we need to do I/O 1009 * on. 1010 */ 1011 1012 s = splbio(); /* protect the queues */ 1013 1014 disksort(&xy->xyq, bp); 1015 1016 /* start 'em up */ 1017 1018 xyc_start(xy->parent, NULL); 1019 1020 /* done! */ 1021 1022 splx(s); 1023 return; 1024 1025 bad: /* tells upper layers we have an error */ 1026 bp->b_flags |= B_ERROR; 1027 done: /* tells upper layers we are done with this 1028 * buf */ 1029 bp->b_resid = bp->b_bcount; 1030 biodone(bp); 1031 } 1032 /* 1033 * end of {b,c}devsw functions 1034 */ 1035 1036 /* 1037 * i n t e r r u p t f u n c t i o n 1038 * 1039 * xycintr: hardware interrupt. 1040 */ 1041 int 1042 xycintr(v) 1043 void *v; 1044 1045 { 1046 struct xyc_softc *xycsc = v; 1047 1048 /* kick the event counter */ 1049 xycsc->sc_intrcnt.ev_count++; 1050 1051 /* remove as many done IOPBs as possible */ 1052 xyc_remove_iorq(xycsc); 1053 1054 /* start any iorq's already waiting */ 1055 xyc_start(xycsc, NULL); 1056 1057 return (1); 1058 } 1059 /* 1060 * end of interrupt function 1061 */ 1062 1063 /* 1064 * i n t e r n a l f u n c t i o n s 1065 */ 1066 1067 /* 1068 * xyc_rqinit: fill out the fields of an I/O request 1069 */ 1070 1071 inline void 1072 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1073 struct xy_iorq *rq; 1074 struct xyc_softc *xyc; 1075 struct xy_softc *xy; 1076 int md; 1077 u_long blk; 1078 int cnt; 1079 caddr_t db; 1080 struct buf *bp; 1081 { 1082 rq->xyc = xyc; 1083 rq->xy = xy; 1084 rq->ttl = XYC_MAXTTL + 10; 1085 rq->mode = md; 1086 rq->tries = rq->errno = rq->lasterror = 0; 1087 rq->blockno = blk; 1088 rq->sectcnt = cnt; 1089 rq->dbuf = rq->dbufbase = db; 1090 rq->buf = bp; 1091 } 1092 1093 /* 1094 * xyc_rqtopb: load up an IOPB based on an iorq 1095 */ 1096 1097 void 1098 xyc_rqtopb(iorq, iopb, cmd, subfun) 1099 struct xy_iorq *iorq; 1100 struct xy_iopb *iopb; 1101 int cmd, subfun; 1102 1103 { 1104 u_long block, dp; 1105 1106 /* normal IOPB case, standard stuff */ 1107 1108 /* chain bit handled later */ 1109 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1110 iopb->com = cmd; 1111 iopb->errno = 0; 1112 iopb->errs = 0; 1113 iopb->done = 0; 1114 if (iorq->xy) { 1115 iopb->unit = iorq->xy->xy_drive; 1116 iopb->dt = iorq->xy->drive_type; 1117 } else { 1118 iopb->unit = 0; 1119 iopb->dt = 0; 1120 } 1121 block = iorq->blockno; 1122 if (iorq->xy == NULL || block == 0) { 1123 iopb->sect = iopb->head = iopb->cyl = 0; 1124 } else { 1125 iopb->sect = block % iorq->xy->nsect; 1126 block = block / iorq->xy->nsect; 1127 iopb->head = block % iorq->xy->nhead; 1128 block = block / iorq->xy->nhead; 1129 iopb->cyl = block; 1130 } 1131 iopb->scnt = iorq->sectcnt; 1132 if (iorq->dbuf == NULL) { 1133 iopb->dataa = 0; 1134 iopb->datar = 0; 1135 } else { 1136 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1137 iopb->dataa = (dp & 0xffff); 1138 iopb->datar = ((dp & 0xff0000) >> 16); 1139 } 1140 iopb->subfn = subfun; 1141 } 1142 1143 1144 /* 1145 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1146 */ 1147 1148 int 1149 xyc_unbusy(xyc, del) 1150 1151 struct xyc *xyc; 1152 int del; 1153 1154 { 1155 while (del-- > 0) { 1156 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1157 break; 1158 DELAY(1); 1159 } 1160 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1161 } 1162 1163 /* 1164 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1165 * note that NORM requests are handled seperately. 1166 */ 1167 int 1168 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1169 struct xyc_softc *xycsc; 1170 int cmd, subfn, unit, block, scnt; 1171 char *dptr; 1172 int fullmode; 1173 { 1174 struct xy_iorq *iorq = xycsc->ciorq; 1175 struct xy_iopb *iopb = xycsc->ciopb; 1176 int submode = XY_STATE(fullmode); 1177 1178 /* 1179 * is someone else using the control iopq wait for it if we can 1180 */ 1181 start: 1182 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1183 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1184 return(XY_ERR_FAIL); 1185 goto start; 1186 } 1187 1188 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1189 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1190 iorq->mode = XY_SUB_FREE; 1191 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1192 } 1193 1194 /* init iorq/iopb */ 1195 1196 xyc_rqinit(iorq, xycsc, 1197 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1198 fullmode, block, scnt, dptr, NULL); 1199 1200 /* load IOPB from iorq */ 1201 1202 xyc_rqtopb(iorq, iopb, cmd, subfn); 1203 1204 /* submit it for processing */ 1205 1206 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1207 1208 return(XY_ERR_AOK); 1209 } 1210 1211 /* 1212 * xyc_startbuf 1213 * start a buffer for running 1214 */ 1215 1216 int 1217 xyc_startbuf(xycsc, xysc, bp) 1218 struct xyc_softc *xycsc; 1219 struct xy_softc *xysc; 1220 struct buf *bp; 1221 1222 { 1223 int partno; 1224 struct xy_iorq *iorq; 1225 struct xy_iopb *iopb; 1226 u_long block; 1227 caddr_t dbuf; 1228 1229 iorq = xysc->xyrq; 1230 iopb = iorq->iopb; 1231 1232 /* get buf */ 1233 1234 if (bp == NULL) 1235 panic("xyc_startbuf null buf"); 1236 1237 partno = DISKPART(bp->b_dev); 1238 #ifdef XYC_DEBUG 1239 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1240 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1241 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1242 bp->b_bcount, bp->b_data); 1243 #endif 1244 1245 /* 1246 * load request. we have to calculate the correct block number based 1247 * on partition info. 1248 * 1249 * also, note that there are two kinds of buf structures, those with 1250 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1251 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1252 * buffer which has already been mapped into DVMA space. (Not on sun3) 1253 * However, if B_PHYS is not set, then the buffer is a normal system 1254 * buffer which does *not* live in DVMA space. In that case we call 1255 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1256 * 1257 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1258 * as mapped into DVMA space, where as the bp->b_data points to its 1259 * non-DVMA mapping. 1260 * 1261 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1262 * into dvma space, only that it was remapped into the kernel. 1263 * We ALWAYS have to remap the kernel buf into DVMA space. 1264 * (It is done inexpensively, using whole segments!) 1265 */ 1266 1267 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1268 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1269 1270 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1271 if (dbuf == NULL) { /* out of DVMA space */ 1272 printf("%s: warning: out of DVMA space\n", 1273 xycsc->sc_dev.dv_xname); 1274 return (XY_ERR_FAIL); /* XXX: need some sort of 1275 * call-back scheme here? */ 1276 } 1277 1278 /* init iorq and load iopb from it */ 1279 1280 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1281 bp->b_bcount / XYFM_BPS, dbuf, bp); 1282 1283 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1284 1285 /* Instrumentation. */ 1286 disk_busy(&xysc->sc_dk); 1287 1288 return (XY_ERR_AOK); 1289 } 1290 1291 1292 /* 1293 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1294 * if ok. if it fail returns an error code. type is XY_SUB_*. 1295 * 1296 * note: caller frees iorq in all cases except NORM 1297 * 1298 * return value: 1299 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1300 * WAIT: XY_AOK (success), <error-code> (failed) 1301 * POLL: <same as WAIT> 1302 * NOQ : <same as NORM> 1303 * 1304 * there are three sources for i/o requests: 1305 * [1] xystrategy: normal block I/O, using "struct buf" system. 1306 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1307 * [3] open/ioctl: these are I/O requests done in the context of a process, 1308 * and the process should block until they are done. 1309 * 1310 * software state is stored in the iorq structure. each iorq has an 1311 * iopb structure. the hardware understands the iopb structure. 1312 * every command must go through an iopb. a 450 handles one iopb at a 1313 * time, where as a 451 can take them in chains. [the 450 claims it 1314 * can handle chains, but is appears to be buggy...] iopb are allocated 1315 * in DVMA space at boot up time. each disk gets one iopb, and the 1316 * controller gets one (for POLL and WAIT commands). what happens if 1317 * the iopb is busy? for i/o type [1], the buffers are queued at the 1318 * "buff" layer and * picked up later by the interrupt routine. for case 1319 * [2] we can only be blocked if there is a WAIT type I/O request being 1320 * run. since this can only happen when we are crashing, we wait a sec 1321 * and then steal the IOPB. for case [3] the process can sleep 1322 * on the iorq free list until some iopbs are avaliable. 1323 */ 1324 1325 1326 int 1327 xyc_submit_iorq(xycsc, iorq, type) 1328 struct xyc_softc *xycsc; 1329 struct xy_iorq *iorq; 1330 int type; 1331 1332 { 1333 struct xy_iopb *iopb; 1334 u_long iopbaddr; 1335 1336 #ifdef XYC_DEBUG 1337 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1338 xycsc->sc_dev.dv_xname, iorq, type); 1339 #endif 1340 1341 /* first check and see if controller is busy */ 1342 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1343 #ifdef XYC_DEBUG 1344 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1345 #endif 1346 if (type == XY_SUB_NOQ) 1347 return (XY_ERR_FAIL); /* failed */ 1348 switch (type) { 1349 case XY_SUB_NORM: 1350 return XY_ERR_AOK; /* success */ 1351 case XY_SUB_WAIT: 1352 while (iorq->iopb->done == 0) { 1353 sleep(iorq, PRIBIO); 1354 } 1355 return (iorq->errno); 1356 case XY_SUB_POLL: /* steal controller */ 1357 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1358 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1359 panic("xyc_submit_iorq: stuck xyc"); 1360 printf("%s: stole controller\n", 1361 xycsc->sc_dev.dv_xname); 1362 break; 1363 default: 1364 panic("xyc_submit_iorq adding"); 1365 } 1366 } 1367 1368 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1369 if (iopb == NULL) { /* nothing doing? */ 1370 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1371 return(XY_ERR_AOK); 1372 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1373 } 1374 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1375 1376 XYC_GO(xycsc->xyc, iopbaddr); 1377 1378 /* command now running, wrap it up */ 1379 switch (type) { 1380 case XY_SUB_NORM: 1381 case XY_SUB_NOQ: 1382 return (XY_ERR_AOK); /* success */ 1383 case XY_SUB_WAIT: 1384 while (iorq->iopb->done == 0) { 1385 sleep(iorq, PRIBIO); 1386 } 1387 return (iorq->errno); 1388 case XY_SUB_POLL: 1389 return (xyc_piodriver(xycsc, iorq)); 1390 default: 1391 panic("xyc_submit_iorq wrap up"); 1392 } 1393 panic("xyc_submit_iorq"); 1394 return 0; /* not reached */ 1395 } 1396 1397 1398 /* 1399 * xyc_chain: build a chain. return dvma address of first element in 1400 * the chain. iorq != NULL: means we only want that item on the chain. 1401 */ 1402 1403 struct xy_iopb * 1404 xyc_chain(xycsc, iorq) 1405 struct xyc_softc *xycsc; 1406 struct xy_iorq *iorq; 1407 { 1408 int togo, chain, hand; 1409 struct xy_iopb *iopb, *prev_iopb; 1410 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1411 1412 /* 1413 * promote control IOPB to the top 1414 */ 1415 if (iorq == NULL) { 1416 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1417 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1418 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1419 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1420 } 1421 /* 1422 * special case: if iorq != NULL then we have a POLL or WAIT request. 1423 * we let these take priority and do them first. 1424 */ 1425 if (iorq) { 1426 xycsc->xy_chain[0] = iorq; 1427 iorq->iopb->chen = 0; 1428 return(iorq->iopb); 1429 } 1430 1431 /* 1432 * NORM case: do round robin and maybe chain (if allowed and possible) 1433 */ 1434 1435 chain = 0; 1436 hand = xycsc->xy_hand; 1437 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1438 1439 for (togo = XYC_MAXIOPB ; 1440 togo > 0 ; 1441 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1442 { 1443 1444 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1445 xycsc->iopbase[hand].done) 1446 continue; /* not ready-for-i/o */ 1447 1448 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1449 iopb = xycsc->xy_chain[chain]->iopb; 1450 iopb->chen = 0; 1451 if (chain != 0) { /* adding a link to a chain? */ 1452 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1453 prev_iopb->chen = 1; 1454 prev_iopb->nxtiopb = 0xffff & 1455 dvma_kvtopa(iopb, xycsc->bustype); 1456 } else { /* head of chain */ 1457 iorq = xycsc->xy_chain[chain]; 1458 } 1459 chain++; 1460 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1461 } 1462 return(iorq ? iorq->iopb : NULL); 1463 } 1464 1465 /* 1466 * xyc_piodriver 1467 * 1468 * programmed i/o driver. this function takes over the computer 1469 * and drains off the polled i/o request. it returns the status of the iorq 1470 * the caller is interesting in. 1471 */ 1472 int 1473 xyc_piodriver(xycsc, iorq) 1474 struct xyc_softc *xycsc; 1475 struct xy_iorq *iorq; 1476 1477 { 1478 int nreset = 0; 1479 int retval = 0; 1480 u_long res; 1481 1482 #ifdef XYC_DEBUG 1483 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1484 #endif 1485 1486 while (iorq->iopb->done == 0) { 1487 1488 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1489 1490 /* we expect some progress soon */ 1491 if (res == XY_ERR_FAIL && nreset >= 2) { 1492 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1493 #ifdef XYC_DEBUG 1494 printf("xyc_piodriver: timeout\n"); 1495 #endif 1496 return (XY_ERR_FAIL); 1497 } 1498 if (res == XY_ERR_FAIL) { 1499 if (xyc_reset(xycsc, 0, 1500 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1501 XY_ERR_FAIL, 1502 0) == XY_ERR_FAIL) 1503 return (XY_ERR_FAIL); /* flushes all but POLL 1504 * requests, resets */ 1505 continue; 1506 } 1507 1508 xyc_remove_iorq(xycsc); /* may resubmit request */ 1509 1510 if (iorq->iopb->done == 0) 1511 xyc_start(xycsc, iorq); 1512 } 1513 1514 /* get return value */ 1515 1516 retval = iorq->errno; 1517 1518 #ifdef XYC_DEBUG 1519 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1520 iorq->errno, xyc_e2str(iorq->errno)); 1521 #endif 1522 1523 /* start up any bufs that have queued */ 1524 1525 xyc_start(xycsc, NULL); 1526 1527 return (retval); 1528 } 1529 1530 /* 1531 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1532 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1533 */ 1534 void 1535 xyc_xyreset(xycsc, xysc) 1536 struct xyc_softc *xycsc; 1537 struct xy_softc *xysc; 1538 1539 { 1540 struct xy_iopb tmpiopb; 1541 u_long addr; 1542 int del; 1543 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1544 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1545 xycsc->ciopb->ien = 0; 1546 xycsc->ciopb->com = XYCMD_RST; 1547 xycsc->ciopb->unit = xysc->xy_drive; 1548 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1549 1550 XYC_GO(xycsc->xyc, addr); 1551 1552 del = XYC_RESETUSEC; 1553 while (del > 0) { 1554 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1555 DELAY(1); 1556 del--; 1557 } 1558 1559 if (del <= 0 || xycsc->ciopb->errs) { 1560 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1561 xyc_e2str(xycsc->ciopb->errno)); 1562 del = xycsc->xyc->xyc_rsetup; 1563 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1564 panic("xyc_reset"); 1565 } else { 1566 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1567 } 1568 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1569 } 1570 1571 1572 /* 1573 * xyc_reset: reset everything: requests are marked as errors except 1574 * a polled request (which is resubmitted) 1575 */ 1576 int 1577 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1578 struct xyc_softc *xycsc; 1579 int quiet, error; 1580 struct xy_iorq *blastmode; 1581 struct xy_softc *xysc; 1582 1583 { 1584 int del = 0, lcv, retval = XY_ERR_AOK; 1585 struct xy_iorq *iorq; 1586 1587 /* soft reset hardware */ 1588 1589 if (!quiet) 1590 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1591 del = xycsc->xyc->xyc_rsetup; 1592 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1593 if (del == XY_ERR_FAIL) { 1594 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1595 retval = XY_ERR_FAIL; 1596 } 1597 if (xysc) 1598 xyc_xyreset(xycsc, xysc); 1599 1600 /* fix queues based on "blast-mode" */ 1601 1602 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1603 iorq = &xycsc->reqs[lcv]; 1604 1605 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1606 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1607 XY_STATE(iorq->mode) != XY_SUB_NORM) 1608 /* is it active? */ 1609 continue; 1610 1611 if (blastmode == XY_RSET_ALL || 1612 blastmode != iorq) { 1613 /* failed */ 1614 iorq->errno = error; 1615 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1616 switch (XY_STATE(iorq->mode)) { 1617 case XY_SUB_NORM: 1618 iorq->buf->b_error = EIO; 1619 iorq->buf->b_flags |= B_ERROR; 1620 iorq->buf->b_resid = 1621 iorq->sectcnt * XYFM_BPS; 1622 /* Sun3: map/unmap regardless of B_PHYS */ 1623 dvma_mapout(iorq->dbufbase, 1624 iorq->buf->b_bcount); 1625 iorq->xy->xyq.b_actf = 1626 iorq->buf->b_actf; 1627 disk_unbusy(&iorq->xy->sc_dk, 1628 (iorq->buf->b_bcount - 1629 iorq->buf->b_resid)); 1630 biodone(iorq->buf); 1631 iorq->mode = XY_SUB_FREE; 1632 break; 1633 case XY_SUB_WAIT: 1634 wakeup(iorq); 1635 case XY_SUB_POLL: 1636 iorq->mode = 1637 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1638 break; 1639 } 1640 1641 } else { 1642 1643 /* resubmit, no need to do anything here */ 1644 } 1645 } 1646 1647 /* 1648 * now, if stuff is waiting, start it. 1649 * since we just reset it should go 1650 */ 1651 xyc_start(xycsc, NULL); 1652 1653 return (retval); 1654 } 1655 1656 /* 1657 * xyc_start: start waiting buffers 1658 */ 1659 1660 void 1661 xyc_start(xycsc, iorq) 1662 struct xyc_softc *xycsc; 1663 struct xy_iorq *iorq; 1664 1665 { 1666 int lcv; 1667 struct xy_softc *xy; 1668 1669 if (iorq == NULL) { 1670 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1671 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1672 if (xy->xyq.b_actf == NULL) continue; 1673 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1674 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1675 } 1676 } 1677 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1678 } 1679 1680 /* 1681 * xyc_remove_iorq: remove "done" IOPB's. 1682 */ 1683 1684 int 1685 xyc_remove_iorq(xycsc) 1686 struct xyc_softc *xycsc; 1687 1688 { 1689 int errno, rq, comm, errs; 1690 struct xyc *xyc = xycsc->xyc; 1691 u_long addr; 1692 struct xy_iopb *iopb; 1693 struct xy_iorq *iorq; 1694 struct buf *bp; 1695 1696 if (xyc->xyc_csr & XYC_DERR) { 1697 /* 1698 * DOUBLE ERROR: should never happen under normal use. This 1699 * error is so bad, you can't even tell which IOPB is bad, so 1700 * we dump them all. 1701 */ 1702 errno = XY_ERR_DERR; 1703 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1704 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1705 printf("%s: soft reset failed!\n", 1706 xycsc->sc_dev.dv_xname); 1707 panic("xyc_remove_iorq: controller DEAD"); 1708 } 1709 return (XY_ERR_AOK); 1710 } 1711 1712 /* 1713 * get iopb that is done, loop down the chain 1714 */ 1715 1716 if (xyc->xyc_csr & XYC_ERR) { 1717 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1718 } 1719 if (xyc->xyc_csr & XYC_IPND) { 1720 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1721 } 1722 1723 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1724 iorq = xycsc->xy_chain[rq]; 1725 if (iorq == NULL) break; /* done ! */ 1726 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1727 continue; /* free, or done */ 1728 iopb = iorq->iopb; 1729 if (iopb->done == 0) 1730 continue; /* not done yet */ 1731 1732 comm = iopb->com; 1733 errs = iopb->errs; 1734 1735 if (errs) 1736 iorq->errno = iopb->errno; 1737 else 1738 iorq->errno = 0; 1739 1740 /* handle non-fatal errors */ 1741 1742 if (errs && 1743 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1744 continue; /* AOK: we resubmitted it */ 1745 1746 1747 /* this iorq is now done (hasn't been restarted or anything) */ 1748 1749 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1750 xyc_perror(iorq, iopb, 0); 1751 1752 /* now, if read/write check to make sure we got all the data 1753 * we needed. (this may not be the case if we got an error in 1754 * the middle of a multisector request). */ 1755 1756 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1757 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1758 /* we just successfully processed a bad144 sector 1759 * note: if we are in bad 144 mode, the pointers have 1760 * been advanced already (see above) and are pointing 1761 * at the bad144 sector. to exit bad144 mode, we 1762 * must advance the pointers 1 sector and issue a new 1763 * request if there are still sectors left to process 1764 * 1765 */ 1766 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1767 1768 /* exit b144 mode */ 1769 iorq->mode = iorq->mode & (~XY_MODE_B144); 1770 1771 if (iorq->sectcnt) { /* more to go! */ 1772 iorq->lasterror = iorq->errno = iopb->errno = 0; 1773 iopb->errs = iopb->done = 0; 1774 iorq->tries = 0; 1775 iopb->scnt = iorq->sectcnt; 1776 iopb->cyl = iorq->blockno / 1777 iorq->xy->sectpercyl; 1778 iopb->head = 1779 (iorq->blockno / iorq->xy->nhead) % 1780 iorq->xy->nhead; 1781 iopb->sect = iorq->blockno % XYFM_BPS; 1782 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1783 iopb->dataa = (addr & 0xffff); 1784 iopb->datar = ((addr & 0xff0000) >> 16); 1785 /* will resubit at end */ 1786 continue; 1787 } 1788 } 1789 /* final cleanup, totally done with this request */ 1790 1791 switch (XY_STATE(iorq->mode)) { 1792 case XY_SUB_NORM: 1793 bp = iorq->buf; 1794 if (errs) { 1795 bp->b_error = EIO; 1796 bp->b_flags |= B_ERROR; 1797 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1798 } else { 1799 bp->b_resid = 0; /* done */ 1800 } 1801 /* Sun3: map/unmap regardless of B_PHYS */ 1802 dvma_mapout(iorq->dbufbase, 1803 iorq->buf->b_bcount); 1804 iorq->xy->xyq.b_actf = bp->b_actf; 1805 disk_unbusy(&iorq->xy->sc_dk, 1806 (bp->b_bcount - bp->b_resid)); 1807 iorq->mode = XY_SUB_FREE; 1808 biodone(bp); 1809 break; 1810 case XY_SUB_WAIT: 1811 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1812 wakeup(iorq); 1813 break; 1814 case XY_SUB_POLL: 1815 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1816 break; 1817 } 1818 } 1819 1820 return (XY_ERR_AOK); 1821 } 1822 1823 /* 1824 * xyc_perror: print error. 1825 * - if still_trying is true: we got an error, retried and got a 1826 * different error. in that case lasterror is the old error, 1827 * and errno is the new one. 1828 * - if still_trying is not true, then if we ever had an error it 1829 * is in lasterror. also, if iorq->errno == 0, then we recovered 1830 * from that error (otherwise iorq->errno == iorq->lasterror). 1831 */ 1832 void 1833 xyc_perror(iorq, iopb, still_trying) 1834 struct xy_iorq *iorq; 1835 struct xy_iopb *iopb; 1836 int still_trying; 1837 1838 { 1839 1840 int error = iorq->lasterror; 1841 1842 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1843 : iorq->xyc->sc_dev.dv_xname); 1844 if (iorq->buf) 1845 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1846 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1847 printf("%s %d/%d/%d: ", 1848 (iopb->com == XYCMD_RD) ? "read" : "write", 1849 iopb->cyl, iopb->head, iopb->sect); 1850 printf("%s", xyc_e2str(error)); 1851 1852 if (still_trying) 1853 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1854 else 1855 if (iorq->errno == 0) 1856 printf(" [recovered in %d tries]", iorq->tries); 1857 1858 printf("\n"); 1859 } 1860 1861 /* 1862 * xyc_error: non-fatal error encountered... recover. 1863 * return AOK if resubmitted, return FAIL if this iopb is done 1864 */ 1865 int 1866 xyc_error(xycsc, iorq, iopb, comm) 1867 struct xyc_softc *xycsc; 1868 struct xy_iorq *iorq; 1869 struct xy_iopb *iopb; 1870 int comm; 1871 1872 { 1873 int errno = iorq->errno; 1874 int erract = xyc_entoact(errno); 1875 int oldmode, advance, i; 1876 1877 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1878 oldmode = iorq->mode; 1879 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1880 /* make xyc_start ignore us */ 1881 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1882 iorq->mode = oldmode; 1883 } 1884 /* check for read/write to a sector in bad144 table if bad: redirect 1885 * request to bad144 area */ 1886 1887 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1888 (iorq->mode & XY_MODE_B144) == 0) { 1889 advance = iorq->sectcnt - iopb->scnt; 1890 XYC_ADVANCE(iorq, advance); 1891 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1892 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1893 iorq->blockno % iorq->xy->nsect)) != -1) { 1894 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1895 * redirect */ 1896 iopb->errno = iopb->done = iopb->errs = 0; 1897 iopb->scnt = 1; 1898 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1899 /* second to last acyl */ 1900 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1901 * standard */ 1902 iopb->head = i / iorq->xy->nhead; 1903 iopb->sect = i % iorq->xy->nhead; 1904 /* will resubmit when we come out of remove_iorq */ 1905 return (XY_ERR_AOK); /* recovered! */ 1906 } 1907 } 1908 1909 /* 1910 * it isn't a bad144 sector, must be real error! see if we can retry 1911 * it? 1912 */ 1913 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1914 xyc_perror(iorq, iopb, 1); /* inform of error state 1915 * change */ 1916 iorq->lasterror = errno; 1917 1918 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1919 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1920 iorq->tries++; 1921 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1922 /* will resubmit at end of remove_iorq */ 1923 return (XY_ERR_AOK); /* recovered! */ 1924 } 1925 1926 /* failed to recover from this error */ 1927 return (XY_ERR_FAIL); 1928 } 1929 1930 /* 1931 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1932 */ 1933 void 1934 xyc_tick(arg) 1935 void *arg; 1936 1937 { 1938 struct xyc_softc *xycsc = arg; 1939 int lcv, s, reset = 0; 1940 1941 /* reduce ttl for each request if one goes to zero, reset xyc */ 1942 s = splbio(); 1943 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1944 if (xycsc->reqs[lcv].mode == 0 || 1945 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1946 continue; 1947 xycsc->reqs[lcv].ttl--; 1948 if (xycsc->reqs[lcv].ttl == 0) 1949 reset = 1; 1950 } 1951 if (reset) { 1952 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1953 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1954 } 1955 splx(s); 1956 1957 /* until next time */ 1958 1959 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1960 } 1961 1962 /* 1963 * xyc_ioctlcmd: this function provides a user level interface to the 1964 * controller via ioctl. this allows "format" programs to be written 1965 * in user code, and is also useful for some debugging. we return 1966 * an error code. called at user priority. 1967 * 1968 * XXX missing a few commands (see the 7053 driver for ideas) 1969 */ 1970 int 1971 xyc_ioctlcmd(xy, dev, xio) 1972 struct xy_softc *xy; 1973 dev_t dev; 1974 struct xd_iocmd *xio; 1975 1976 { 1977 int s, err, rqno; 1978 void * dvmabuf = NULL; 1979 struct xyc_softc *xycsc; 1980 1981 /* check sanity of requested command */ 1982 1983 switch (xio->cmd) { 1984 1985 case XYCMD_NOP: /* no op: everything should be zero */ 1986 if (xio->subfn || xio->dptr || xio->dlen || 1987 xio->block || xio->sectcnt) 1988 return (EINVAL); 1989 break; 1990 1991 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1992 case XYCMD_WR: 1993 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1994 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1995 return (EINVAL); 1996 break; 1997 1998 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1999 return (EINVAL); 2000 2001 break; 2002 2003 default: 2004 return (EINVAL);/* ??? */ 2005 } 2006 2007 /* create DVMA buffer for request if needed */ 2008 2009 if (xio->dlen) { 2010 dvmabuf = dvma_malloc(xio->dlen); 2011 if (xio->cmd == XYCMD_WR) { 2012 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2013 if (err) { 2014 dvma_free(dvmabuf, xio->dlen); 2015 return (err); 2016 } 2017 } 2018 } 2019 /* do it! */ 2020 2021 err = 0; 2022 xycsc = xy->parent; 2023 s = splbio(); 2024 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2025 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2026 if (rqno == XY_ERR_FAIL) { 2027 err = EIO; 2028 goto done; 2029 } 2030 xio->errno = xycsc->ciorq->errno; 2031 xio->tries = xycsc->ciorq->tries; 2032 XYC_DONE(xycsc, err); 2033 2034 if (xio->cmd == XYCMD_RD) 2035 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2036 2037 done: 2038 splx(s); 2039 if (dvmabuf) 2040 dvma_free(dvmabuf, xio->dlen); 2041 return (err); 2042 } 2043 2044 /* 2045 * xyc_e2str: convert error code number into an error string 2046 */ 2047 char * 2048 xyc_e2str(no) 2049 int no; 2050 { 2051 switch (no) { 2052 case XY_ERR_FAIL: 2053 return ("Software fatal error"); 2054 case XY_ERR_DERR: 2055 return ("DOUBLE ERROR"); 2056 case XY_ERR_AOK: 2057 return ("Successful completion"); 2058 case XY_ERR_IPEN: 2059 return("Interrupt pending"); 2060 case XY_ERR_BCFL: 2061 return("Busy conflict"); 2062 case XY_ERR_TIMO: 2063 return("Operation timeout"); 2064 case XY_ERR_NHDR: 2065 return("Header not found"); 2066 case XY_ERR_HARD: 2067 return("Hard ECC error"); 2068 case XY_ERR_ICYL: 2069 return("Illegal cylinder address"); 2070 case XY_ERR_ISEC: 2071 return("Illegal sector address"); 2072 case XY_ERR_SMAL: 2073 return("Last sector too small"); 2074 case XY_ERR_SACK: 2075 return("Slave ACK error (non-existent memory)"); 2076 case XY_ERR_CHER: 2077 return("Cylinder and head/header error"); 2078 case XY_ERR_SRTR: 2079 return("Auto-seek retry successful"); 2080 case XY_ERR_WPRO: 2081 return("Write-protect error"); 2082 case XY_ERR_UIMP: 2083 return("Unimplemented command"); 2084 case XY_ERR_DNRY: 2085 return("Drive not ready"); 2086 case XY_ERR_SZER: 2087 return("Sector count zero"); 2088 case XY_ERR_DFLT: 2089 return("Drive faulted"); 2090 case XY_ERR_ISSZ: 2091 return("Illegal sector size"); 2092 case XY_ERR_SLTA: 2093 return("Self test A"); 2094 case XY_ERR_SLTB: 2095 return("Self test B"); 2096 case XY_ERR_SLTC: 2097 return("Self test C"); 2098 case XY_ERR_SOFT: 2099 return("Soft ECC error"); 2100 case XY_ERR_SFOK: 2101 return("Soft ECC error recovered"); 2102 case XY_ERR_IHED: 2103 return("Illegal head"); 2104 case XY_ERR_DSEQ: 2105 return("Disk sequencer error"); 2106 case XY_ERR_SEEK: 2107 return("Seek error"); 2108 default: 2109 return ("Unknown error"); 2110 } 2111 } 2112 2113 int 2114 xyc_entoact(errno) 2115 2116 int errno; 2117 2118 { 2119 switch (errno) { 2120 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2121 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2122 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2123 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2124 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2125 2126 return(XY_ERA_PROG); /* program error ! */ 2127 2128 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2129 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2130 case XY_ERR_SOFT: 2131 2132 return(XY_ERA_HARD); /* hard error, retry */ 2133 2134 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2135 2136 return(XY_ERA_RSET); /* hard error reset */ 2137 2138 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2139 2140 return(XY_ERA_SOFT); /* an FYI error */ 2141 2142 case XY_ERR_WPRO: 2143 2144 return(XY_ERA_WPRO); /* write protect */ 2145 } 2146 2147 return(XY_ERA_PROG); /* ??? */ 2148 } 2149
Indexes created Mon Sep 29 21:09:56 GMT 2025