xy.c revision 1.25
1 /* $NetBSD: xy.c,v 1.25 2000/02/07 20:16:54 thorpej Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: &Id: xy.c,v 1.1 1995/09/25 20:35:14 chuck Exp & 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <dev/sun/disklabel.h> 81 82 #include <machine/autoconf.h> 83 #include <machine/dvma.h> 84 85 #include <sun3/dev/xyreg.h> 86 #include <sun3/dev/xyvar.h> 87 #include <sun3/dev/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * Print a complaint when no xy children were specified 93 * in the config file. Better than a link error... 94 * 95 * XXX: Some folks say this driver should be split in two, 96 * but that seems pointless with ONLY one type of child. 97 */ 98 #include "xy.h" 99 #if NXY == 0 100 #error "xyc but no xy?" 101 #endif 102 103 /* 104 * macros 105 */ 106 107 /* 108 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 109 */ 110 #define XYC_GO(XYC, ADDR) { \ 111 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 112 (ADDR) = ((ADDR) >> 8); \ 113 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 114 (ADDR) = ((ADDR) >> 8); \ 115 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 116 (ADDR) = ((ADDR) >> 8); \ 117 (XYC)->xyc_reloc_hi = (ADDR); \ 118 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 119 } 120 121 /* 122 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 123 */ 124 125 #define XYC_DONE(SC,ER) { \ 126 if ((ER) == XY_ERR_AOK) { \ 127 (ER) = (SC)->ciorq->errno; \ 128 (SC)->ciorq->mode = XY_SUB_FREE; \ 129 wakeup((SC)->ciorq); \ 130 } \ 131 } 132 133 /* 134 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 135 */ 136 137 #define XYC_ADVANCE(IORQ, N) { \ 138 if (N) { \ 139 (IORQ)->sectcnt -= (N); \ 140 (IORQ)->blockno += (N); \ 141 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 142 } \ 143 } 144 145 /* 146 * note - addresses you can sleep on: 147 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 148 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 149 */ 150 151 152 /* 153 * function prototypes 154 * "xyc_*" functions are internal, all others are external interfaces 155 */ 156 157 /* internals */ 158 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 159 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 160 char *xyc_e2str __P((int)); 161 int xyc_entoact __P((int)); 162 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 163 struct xy_iopb *, int)); 164 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 165 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 166 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 167 int xyc_remove_iorq __P((struct xyc_softc *)); 168 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 169 struct xy_softc *)); 170 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 171 struct xy_softc *, int, u_long, int, 172 caddr_t, struct buf *)); 173 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 174 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 175 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 176 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 177 void xyc_tick __P((void *)); 178 int xyc_unbusy __P((struct xyc *, int)); 179 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 180 181 /* machine interrupt hook */ 182 int xycintr __P((void *)); 183 184 /* bdevsw, cdevsw */ 185 bdev_decl(xy); 186 cdev_decl(xy); 187 188 /* autoconf */ 189 static int xycmatch __P((struct device *, struct cfdata *, void *)); 190 static void xycattach __P((struct device *, struct device *, void *)); 191 static int xyc_print __P((void *, const char *name)); 192 193 static int xymatch __P((struct device *, struct cfdata *, void *)); 194 static void xyattach __P((struct device *, struct device *, void *)); 195 static void xy_init __P((struct xy_softc *)); 196 197 static void xydummystrat __P((struct buf *)); 198 int xygetdisklabel __P((struct xy_softc *, void *)); 199 200 /* 201 * cfattach's: device driver interface to autoconfig 202 */ 203 204 struct cfattach xyc_ca = { 205 sizeof(struct xyc_softc), xycmatch, xycattach 206 }; 207 208 struct cfattach xy_ca = { 209 sizeof(struct xy_softc), xymatch, xyattach 210 }; 211 212 extern struct cfdriver xy_cd; 213 214 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 215 int driveno; /* unit number */ 216 }; 217 218 /* 219 * dkdriver 220 */ 221 222 struct dkdriver xydkdriver = { xystrategy }; 223 224 /* 225 * start: disk label fix code (XXX) 226 */ 227 228 static void *xy_labeldata; 229 230 static void 231 xydummystrat(bp) 232 struct buf *bp; 233 { 234 if (bp->b_bcount != XYFM_BPS) 235 panic("xydummystrat"); 236 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 237 bp->b_flags |= B_DONE; 238 bp->b_flags &= ~B_BUSY; 239 } 240 241 int 242 xygetdisklabel(xy, b) 243 struct xy_softc *xy; 244 void *b; 245 { 246 char *err; 247 struct sun_disklabel *sdl; 248 249 /* We already have the label data in `b'; setup for dummy strategy */ 250 xy_labeldata = b; 251 252 /* Required parameter for readdisklabel() */ 253 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 254 255 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 256 xydummystrat, 257 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 258 if (err) { 259 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 260 return(XY_ERR_FAIL); 261 } 262 263 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 264 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 265 if (sdl->sl_magic == SUN_DKMAGIC) 266 xy->pcyl = sdl->sl_pcyl; 267 else { 268 printf("%s: WARNING: no `pcyl' in disk label.\n", 269 xy->sc_dev.dv_xname); 270 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 271 xy->sc_dk.dk_label->d_acylinders; 272 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 273 xy->sc_dev.dv_xname, xy->pcyl); 274 } 275 276 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 277 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 278 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 279 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 280 xy->sectpercyl = xy->nhead * xy->nsect; 281 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 282 * sun->bsd */ 283 return(XY_ERR_AOK); 284 } 285 286 /* 287 * end: disk label fix code (XXX) 288 */ 289 290 /* 291 * a u t o c o n f i g f u n c t i o n s 292 */ 293 294 /* 295 * xycmatch: determine if xyc is present or not. we do a 296 * soft reset to detect the xyc. 297 */ 298 static int 299 xycmatch(parent, cf, aux) 300 struct device *parent; 301 struct cfdata *cf; 302 void *aux; 303 { 304 struct confargs *ca = aux; 305 306 /* No default VME address. */ 307 if (ca->ca_paddr == -1) 308 return (0); 309 310 /* Make sure something is there... */ 311 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 312 return (0); 313 314 /* Default interrupt priority. */ 315 if (ca->ca_intpri == -1) 316 ca->ca_intpri = 2; 317 318 return (1); 319 } 320 321 /* 322 * xycattach: attach controller 323 */ 324 static void 325 xycattach(parent, self, aux) 326 struct device *parent, *self; 327 void *aux; 328 { 329 struct xyc_softc *xyc = (void *) self; 330 struct confargs *ca = aux; 331 struct xyc_attach_args xa; 332 int lcv, err, res, pbsz; 333 void *tmp, *tmp2; 334 u_long ultmp; 335 336 /* get addressing and intr level stuff from autoconfig and load it 337 * into our xyc_softc. */ 338 339 xyc->xyc = (struct xyc *) 340 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 341 xyc->bustype = ca->ca_bustype; 342 xyc->ipl = ca->ca_intpri; 343 xyc->vector = ca->ca_intvec; 344 xyc->no_ols = 0; /* XXX should be from config */ 345 346 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 347 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 348 349 /* 350 * allocate and zero buffers 351 * check boundaries of the KVA's ... all IOPBs must reside in 352 * the same 64K region. 353 */ 354 355 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 356 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 357 ultmp = (u_long) tmp; 358 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 359 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 360 dvma_free(tmp2, pbsz); 361 ultmp = (u_long) tmp; 362 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 363 printf("%s: can't alloc IOPB mem in 64K\n", 364 xyc->sc_dev.dv_xname); 365 return; 366 } 367 } 368 bzero(tmp, pbsz); 369 xyc->iopbase = tmp; 370 xyc->dvmaiopb = (struct xy_iopb *) 371 dvma_kvtopa(xyc->iopbase, xyc->bustype); 372 xyc->reqs = (struct xy_iorq *) 373 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 374 if (xyc->reqs == NULL) 375 panic("xyc malloc"); 376 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 377 378 /* 379 * init iorq to iopb pointers, and non-zero fields in the 380 * iopb which never change. 381 */ 382 383 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 384 xyc->xy_chain[lcv] = NULL; 385 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 386 xyc->iopbase[lcv].asr = 1; /* always the same */ 387 xyc->iopbase[lcv].eef = 1; /* always the same */ 388 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 389 xyc->iopbase[lcv].aud = 1; /* always the same */ 390 xyc->iopbase[lcv].relo = 1; /* always the same */ 391 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 392 } 393 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 394 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 395 xyc->xy_hand = 0; 396 397 /* read controller parameters and insure we have a 450/451 */ 398 399 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 400 res = xyc->ciopb->ctyp; 401 XYC_DONE(xyc, err); 402 if (res != XYCT_450) { 403 if (err) 404 printf(": %s: ", xyc_e2str(err)); 405 printf(": doesn't identify as a 450/451\n"); 406 return; 407 } 408 printf(": Xylogics 450/451"); 409 if (xyc->no_ols) 410 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 411 printf("\n"); 412 if (err) { 413 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 414 xyc_e2str(err)); 415 return; 416 } 417 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 418 printf("%s: 24 bit addressing turned off\n", 419 xyc->sc_dev.dv_xname); 420 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 421 printf("to enable 24 bit mode and this driver\n"); 422 return; 423 } 424 425 /* link in interrupt with higher level software */ 426 isr_add_vectored(xycintr, (void *)xyc, 427 ca->ca_intpri, ca->ca_intvec); 428 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 429 430 /* now we must look for disks using autoconfig */ 431 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 432 (void) config_found(self, (void *) &xa, xyc_print); 433 434 /* start the watchdog clock */ 435 timeout(xyc_tick, xyc, XYC_TICKCNT); 436 } 437 438 static int 439 xyc_print(aux, name) 440 void *aux; 441 const char *name; 442 { 443 struct xyc_attach_args *xa = aux; 444 445 if (name != NULL) 446 printf("%s: ", name); 447 448 if (xa->driveno != -1) 449 printf(" drive %d", xa->driveno); 450 451 return UNCONF; 452 } 453 454 /* 455 * xymatch: probe for disk. 456 * 457 * note: we almost always say disk is present. this allows us to 458 * spin up and configure a disk after the system is booted (we can 459 * call xyattach!). Also, wire down the relationship between the 460 * xy* and xyc* devices, to simplify boot device identification. 461 */ 462 static int 463 xymatch(parent, cf, aux) 464 struct device *parent; 465 struct cfdata *cf; 466 void *aux; 467 { 468 struct xyc_attach_args *xa = aux; 469 int xy_unit; 470 471 /* Match only on the "wired-down" controller+disk. */ 472 xy_unit = parent->dv_unit * 2 + xa->driveno; 473 if (cf->cf_unit != xy_unit) 474 return (0); 475 476 return (1); 477 } 478 479 /* 480 * xyattach: attach a disk. 481 */ 482 static void 483 xyattach(parent, self, aux) 484 struct device *parent, *self; 485 void *aux; 486 { 487 struct xy_softc *xy = (void *) self; 488 struct xyc_softc *xyc = (void *) parent; 489 struct xyc_attach_args *xa = aux; 490 491 printf("\n"); 492 493 /* 494 * Always re-initialize the disk structure. We want statistics 495 * to start with a clean slate. 496 */ 497 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 498 xy->sc_dk.dk_driver = &xydkdriver; 499 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 500 501 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 502 xy->flags = 0; 503 xy->parent = xyc; 504 505 /* init queue of waiting bufs */ 506 BUFQ_INIT(&xy->xyq); 507 xy->xyrq = &xyc->reqs[xa->driveno]; 508 509 xy->xy_drive = xa->driveno; 510 xyc->sc_drives[xa->driveno] = xy; 511 512 /* Do init work common to attach and open. */ 513 xy_init(xy); 514 dk_establish(&xy->sc_dk, &xy->sc_dev); 515 } 516 517 /* 518 * end of autoconfig functions 519 */ 520 521 /* 522 * Initialize a disk. This can be called from both autoconf and 523 * also from xyopen/xystrategy. 524 */ 525 static void 526 xy_init(xy) 527 struct xy_softc *xy; 528 { 529 struct xyc_softc *xyc; 530 struct dkbad *dkb; 531 void *dvmabuf; 532 int err, spt, mb, blk, lcv, fullmode, newstate; 533 534 xyc = xy->parent; 535 xy->state = XY_DRIVE_ATTACHING; 536 newstate = XY_DRIVE_UNKNOWN; 537 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 538 dvmabuf = dvma_malloc(XYFM_BPS); 539 540 /* first try and reset the drive */ 541 542 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 543 XYC_DONE(xyc, err); 544 if (err == XY_ERR_DNRY) { 545 printf("%s: drive %d: off-line\n", 546 xy->sc_dev.dv_xname, xy->xy_drive); 547 goto done; 548 } 549 if (err) { 550 printf("%s: ERROR 0x%02x (%s)\n", 551 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 552 goto done; 553 } 554 printf("%s: drive %d ready", 555 xy->sc_dev.dv_xname, xy->xy_drive); 556 557 /* 558 * now set drive parameters (to semi-bogus values) so we can read the 559 * disk label. 560 */ 561 xy->pcyl = xy->ncyl = 1; 562 xy->acyl = 0; 563 xy->nhead = 1; 564 xy->nsect = 1; 565 xy->sectpercyl = 1; 566 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 567 xy->dkb.bt_bad[lcv].bt_cyl = 568 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 569 570 /* read disk label */ 571 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 572 xy->drive_type++) { 573 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 574 dvmabuf, fullmode); 575 XYC_DONE(xyc, err); 576 if (err == XY_ERR_AOK) break; 577 } 578 579 if (err != XY_ERR_AOK) { 580 printf("%s: reading disk label failed: %s\n", 581 xy->sc_dev.dv_xname, xyc_e2str(err)); 582 goto done; 583 } 584 printf("%s: drive type %d\n", 585 xy->sc_dev.dv_xname, xy->drive_type); 586 587 newstate = XY_DRIVE_NOLABEL; 588 589 xy->hw_spt = spt = 0; /* XXX needed ? */ 590 /* Attach the disk: must be before getdisklabel to malloc label */ 591 disk_attach(&xy->sc_dk); 592 593 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 594 goto done; 595 596 /* inform the user of what is up */ 597 printf("%s: <%s>, pcyl %d\n", 598 xy->sc_dev.dv_xname, 599 (char *)dvmabuf, xy->pcyl); 600 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 601 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 602 xy->sc_dev.dv_xname, mb, 603 xy->ncyl, xy->nhead, xy->nsect); 604 605 /* 606 * 450/451 stupidity: the drive type is encoded into the format 607 * of the disk. the drive type in the IOPB must match the drive 608 * type in the format, or you will not be able to do I/O to the 609 * disk (you get header not found errors). if you have two drives 610 * of different sizes that have the same drive type in their 611 * formatting then you are out of luck. 612 * 613 * this problem was corrected in the 753/7053. 614 */ 615 616 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 617 struct xy_softc *oxy; 618 619 oxy = xyc->sc_drives[lcv]; 620 if (oxy == NULL || oxy == xy) continue; 621 if (oxy->drive_type != xy->drive_type) continue; 622 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 623 xy->nhead != oxy->nhead) { 624 printf("%s: %s and %s must be the same size!\n", 625 xyc->sc_dev.dv_xname, 626 xy ->sc_dev.dv_xname, 627 oxy->sc_dev.dv_xname); 628 panic("xy drive size mismatch"); 629 } 630 } 631 632 633 /* now set the real drive parameters! */ 634 blk = (xy->nsect - 1) + 635 ((xy->nhead - 1) * xy->nsect) + 636 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 637 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 638 XYC_DONE(xyc, err); 639 if (err) { 640 printf("%s: write drive size failed: %s\n", 641 xy->sc_dev.dv_xname, xyc_e2str(err)); 642 goto done; 643 } 644 newstate = XY_DRIVE_ONLINE; 645 646 /* 647 * read bad144 table. this table resides on the first sector of the 648 * last track of the disk (i.e. second cyl of "acyl" area). 649 */ 650 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 651 /* last cyl */ 652 (xy->nhead - 1) * xy->nsect; /* last head */ 653 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 654 dvmabuf, fullmode); 655 XYC_DONE(xyc, err); 656 if (err) { 657 printf("%s: reading bad144 failed: %s\n", 658 xy->sc_dev.dv_xname, xyc_e2str(err)); 659 goto done; 660 } 661 662 /* check dkbad for sanity */ 663 dkb = (struct dkbad *) dvmabuf; 664 for (lcv = 0; lcv < 126; lcv++) { 665 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 666 dkb->bt_bad[lcv].bt_cyl == 0) && 667 dkb->bt_bad[lcv].bt_trksec == 0xffff) 668 continue; /* blank */ 669 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 670 break; 671 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 672 break; 673 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 674 break; 675 } 676 if (lcv != 126) { 677 printf("%s: warning: invalid bad144 sector!\n", 678 xy->sc_dev.dv_xname); 679 } else { 680 bcopy(dvmabuf, &xy->dkb, XYFM_BPS); 681 } 682 683 done: 684 xy->state = newstate; 685 dvma_free(dvmabuf, XYFM_BPS); 686 } 687 688 /* 689 * { b , c } d e v s w f u n c t i o n s 690 */ 691 692 /* 693 * xyclose: close device 694 */ 695 int 696 xyclose(dev, flag, fmt, p) 697 dev_t dev; 698 int flag, fmt; 699 struct proc *p; 700 { 701 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 702 int part = DISKPART(dev); 703 704 /* clear mask bits */ 705 706 switch (fmt) { 707 case S_IFCHR: 708 xy->sc_dk.dk_copenmask &= ~(1 << part); 709 break; 710 case S_IFBLK: 711 xy->sc_dk.dk_bopenmask &= ~(1 << part); 712 break; 713 } 714 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 715 716 return 0; 717 } 718 719 /* 720 * xydump: crash dump system 721 */ 722 int 723 xydump(dev, blkno, va, sz) 724 dev_t dev; 725 daddr_t blkno; 726 caddr_t va; 727 size_t sz; 728 { 729 int unit, part; 730 struct xy_softc *xy; 731 732 unit = DISKUNIT(dev); 733 if (unit >= xy_cd.cd_ndevs) 734 return ENXIO; 735 part = DISKPART(dev); 736 737 xy = xy_cd.cd_devs[unit]; 738 739 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 740 'a' + part); 741 742 return ENXIO; 743 744 /* outline: globals: "dumplo" == sector number of partition to start 745 * dump at (convert to physical sector with partition table) 746 * "dumpsize" == size of dump in clicks "physmem" == size of physical 747 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 748 * physmem) 749 * 750 * dump a copy of physical memory to the dump device starting at sector 751 * "dumplo" in the swap partition (make sure > 0). map in pages as 752 * we go. use polled I/O. 753 * 754 * XXX how to handle NON_CONTIG? 755 */ 756 } 757 758 /* 759 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 760 */ 761 int 762 xyioctl(dev, command, addr, flag, p) 763 dev_t dev; 764 u_long command; 765 caddr_t addr; 766 int flag; 767 struct proc *p; 768 769 { 770 struct xy_softc *xy; 771 struct xd_iocmd *xio; 772 int error, s, unit; 773 774 unit = DISKUNIT(dev); 775 776 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 777 return (ENXIO); 778 779 /* switch on ioctl type */ 780 781 switch (command) { 782 case DIOCSBAD: /* set bad144 info */ 783 if ((flag & FWRITE) == 0) 784 return EBADF; 785 s = splbio(); 786 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 787 splx(s); 788 return 0; 789 790 case DIOCGDINFO: /* get disk label */ 791 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 792 return 0; 793 794 case DIOCGPART: /* get partition info */ 795 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 796 ((struct partinfo *) addr)->part = 797 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 798 return 0; 799 800 case DIOCSDINFO: /* set disk label */ 801 if ((flag & FWRITE) == 0) 802 return EBADF; 803 error = setdisklabel(xy->sc_dk.dk_label, 804 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 805 xy->sc_dk.dk_cpulabel); 806 if (error == 0) { 807 if (xy->state == XY_DRIVE_NOLABEL) 808 xy->state = XY_DRIVE_ONLINE; 809 } 810 return error; 811 812 case DIOCWLABEL: /* change write status of disk label */ 813 if ((flag & FWRITE) == 0) 814 return EBADF; 815 if (*(int *) addr) 816 xy->flags |= XY_WLABEL; 817 else 818 xy->flags &= ~XY_WLABEL; 819 return 0; 820 821 case DIOCWDINFO: /* write disk label */ 822 if ((flag & FWRITE) == 0) 823 return EBADF; 824 error = setdisklabel(xy->sc_dk.dk_label, 825 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 826 xy->sc_dk.dk_cpulabel); 827 if (error == 0) { 828 if (xy->state == XY_DRIVE_NOLABEL) 829 xy->state = XY_DRIVE_ONLINE; 830 831 /* Simulate opening partition 0 so write succeeds. */ 832 xy->sc_dk.dk_openmask |= (1 << 0); 833 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 834 xystrategy, xy->sc_dk.dk_label, 835 xy->sc_dk.dk_cpulabel); 836 xy->sc_dk.dk_openmask = 837 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 838 } 839 return error; 840 841 case DIOSXDCMD: 842 xio = (struct xd_iocmd *) addr; 843 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 844 return (error); 845 return (xyc_ioctlcmd(xy, dev, xio)); 846 847 default: 848 return ENOTTY; 849 } 850 } 851 852 /* 853 * xyopen: open drive 854 */ 855 int 856 xyopen(dev, flag, fmt, p) 857 dev_t dev; 858 int flag, fmt; 859 struct proc *p; 860 { 861 int err, unit, part, s; 862 struct xy_softc *xy; 863 864 /* first, could it be a valid target? */ 865 unit = DISKUNIT(dev); 866 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 867 return (ENXIO); 868 part = DISKPART(dev); 869 err = 0; 870 871 /* 872 * If some other processing is doing init, sleep. 873 */ 874 s = splbio(); 875 while (xy->state == XY_DRIVE_ATTACHING) { 876 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 877 err = EINTR; 878 goto done; 879 } 880 } 881 /* Do we need to init the drive? */ 882 if (xy->state == XY_DRIVE_UNKNOWN) { 883 xy_init(xy); 884 wakeup(&xy->state); 885 } 886 /* Was the init successful? */ 887 if (xy->state == XY_DRIVE_UNKNOWN) { 888 err = EIO; 889 goto done; 890 } 891 892 /* check for partition */ 893 if (part != RAW_PART && 894 (part >= xy->sc_dk.dk_label->d_npartitions || 895 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 896 err = ENXIO; 897 goto done; 898 } 899 900 /* set open masks */ 901 switch (fmt) { 902 case S_IFCHR: 903 xy->sc_dk.dk_copenmask |= (1 << part); 904 break; 905 case S_IFBLK: 906 xy->sc_dk.dk_bopenmask |= (1 << part); 907 break; 908 } 909 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 910 911 done: 912 splx(s); 913 return (err); 914 } 915 916 int 917 xyread(dev, uio, flags) 918 dev_t dev; 919 struct uio *uio; 920 int flags; 921 { 922 923 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 924 } 925 926 int 927 xywrite(dev, uio, flags) 928 dev_t dev; 929 struct uio *uio; 930 int flags; 931 { 932 933 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 934 } 935 936 937 /* 938 * xysize: return size of a partition for a dump 939 */ 940 941 int 942 xysize(dev) 943 dev_t dev; 944 945 { 946 struct xy_softc *xysc; 947 int unit, part, size, omask; 948 949 /* valid unit? */ 950 unit = DISKUNIT(dev); 951 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 952 return (-1); 953 954 part = DISKPART(dev); 955 omask = xysc->sc_dk.dk_openmask & (1 << part); 956 957 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 958 return (-1); 959 960 /* do it */ 961 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 962 size = -1; /* only give valid size for swap partitions */ 963 else 964 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 965 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 966 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 967 return (-1); 968 return (size); 969 } 970 971 /* 972 * xystrategy: buffering system interface to xy. 973 */ 974 void 975 xystrategy(bp) 976 struct buf *bp; 977 978 { 979 struct xy_softc *xy; 980 int s, unit; 981 struct disklabel *lp; 982 daddr_t blkno; 983 984 unit = DISKUNIT(bp->b_dev); 985 986 /* check for live device */ 987 988 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 989 bp->b_blkno < 0 || 990 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 991 bp->b_error = EINVAL; 992 goto bad; 993 } 994 995 /* There should always be an open first. */ 996 if (xy->state == XY_DRIVE_UNKNOWN) { 997 bp->b_error = EIO; 998 goto bad; 999 } 1000 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1001 /* no I/O to unlabeled disks, unless raw partition */ 1002 bp->b_error = EIO; 1003 goto bad; 1004 } 1005 /* short circuit zero length request */ 1006 1007 if (bp->b_bcount == 0) 1008 goto done; 1009 1010 /* check bounds with label (disksubr.c). Determine the size of the 1011 * transfer, and make sure it is within the boundaries of the 1012 * partition. Adjust transfer if needed, and signal errors or early 1013 * completion. */ 1014 1015 lp = xy->sc_dk.dk_label; 1016 1017 if (bounds_check_with_label(bp, lp, 1018 (xy->flags & XY_WLABEL) != 0) <= 0) 1019 goto done; 1020 1021 /* 1022 * Now convert the block number to absolute and put it in 1023 * terms of the device's logical block size. 1024 */ 1025 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1026 if (DISKPART(bp->b_dev) != RAW_PART) 1027 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1028 1029 bp->b_rawblkno = blkno; 1030 1031 /* 1032 * now we know we have a valid buf structure that we need to do I/O 1033 * on. 1034 */ 1035 1036 s = splbio(); /* protect the queues */ 1037 1038 disksort_blkno(&xy->xyq, bp); /* XXX disksort_cylinder */ 1039 1040 /* start 'em up */ 1041 1042 xyc_start(xy->parent, NULL); 1043 1044 /* done! */ 1045 1046 splx(s); 1047 return; 1048 1049 bad: /* tells upper layers we have an error */ 1050 bp->b_flags |= B_ERROR; 1051 done: /* tells upper layers we are done with this 1052 * buf */ 1053 bp->b_resid = bp->b_bcount; 1054 biodone(bp); 1055 } 1056 /* 1057 * end of {b,c}devsw functions 1058 */ 1059 1060 /* 1061 * i n t e r r u p t f u n c t i o n 1062 * 1063 * xycintr: hardware interrupt. 1064 */ 1065 int 1066 xycintr(v) 1067 void *v; 1068 1069 { 1070 struct xyc_softc *xycsc = v; 1071 1072 /* kick the event counter */ 1073 xycsc->sc_intrcnt.ev_count++; 1074 1075 /* remove as many done IOPBs as possible */ 1076 xyc_remove_iorq(xycsc); 1077 1078 /* start any iorq's already waiting */ 1079 xyc_start(xycsc, NULL); 1080 1081 return (1); 1082 } 1083 /* 1084 * end of interrupt function 1085 */ 1086 1087 /* 1088 * i n t e r n a l f u n c t i o n s 1089 */ 1090 1091 /* 1092 * xyc_rqinit: fill out the fields of an I/O request 1093 */ 1094 1095 inline void 1096 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1097 struct xy_iorq *rq; 1098 struct xyc_softc *xyc; 1099 struct xy_softc *xy; 1100 int md; 1101 u_long blk; 1102 int cnt; 1103 caddr_t db; 1104 struct buf *bp; 1105 { 1106 rq->xyc = xyc; 1107 rq->xy = xy; 1108 rq->ttl = XYC_MAXTTL + 10; 1109 rq->mode = md; 1110 rq->tries = rq->errno = rq->lasterror = 0; 1111 rq->blockno = blk; 1112 rq->sectcnt = cnt; 1113 rq->dbuf = rq->dbufbase = db; 1114 rq->buf = bp; 1115 } 1116 1117 /* 1118 * xyc_rqtopb: load up an IOPB based on an iorq 1119 */ 1120 1121 void 1122 xyc_rqtopb(iorq, iopb, cmd, subfun) 1123 struct xy_iorq *iorq; 1124 struct xy_iopb *iopb; 1125 int cmd, subfun; 1126 1127 { 1128 u_long block, dp; 1129 1130 /* normal IOPB case, standard stuff */ 1131 1132 /* chain bit handled later */ 1133 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1134 iopb->com = cmd; 1135 iopb->errno = 0; 1136 iopb->errs = 0; 1137 iopb->done = 0; 1138 if (iorq->xy) { 1139 iopb->unit = iorq->xy->xy_drive; 1140 iopb->dt = iorq->xy->drive_type; 1141 } else { 1142 iopb->unit = 0; 1143 iopb->dt = 0; 1144 } 1145 block = iorq->blockno; 1146 if (iorq->xy == NULL || block == 0) { 1147 iopb->sect = iopb->head = iopb->cyl = 0; 1148 } else { 1149 iopb->sect = block % iorq->xy->nsect; 1150 block = block / iorq->xy->nsect; 1151 iopb->head = block % iorq->xy->nhead; 1152 block = block / iorq->xy->nhead; 1153 iopb->cyl = block; 1154 } 1155 iopb->scnt = iorq->sectcnt; 1156 if (iorq->dbuf == NULL) { 1157 iopb->dataa = 0; 1158 iopb->datar = 0; 1159 } else { 1160 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1161 iopb->dataa = (dp & 0xffff); 1162 iopb->datar = ((dp & 0xff0000) >> 16); 1163 } 1164 iopb->subfn = subfun; 1165 } 1166 1167 1168 /* 1169 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1170 */ 1171 1172 int 1173 xyc_unbusy(xyc, del) 1174 1175 struct xyc *xyc; 1176 int del; 1177 1178 { 1179 while (del-- > 0) { 1180 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1181 break; 1182 DELAY(1); 1183 } 1184 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1185 } 1186 1187 /* 1188 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1189 * note that NORM requests are handled seperately. 1190 */ 1191 int 1192 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1193 struct xyc_softc *xycsc; 1194 int cmd, subfn, unit, block, scnt; 1195 char *dptr; 1196 int fullmode; 1197 { 1198 struct xy_iorq *iorq = xycsc->ciorq; 1199 struct xy_iopb *iopb = xycsc->ciopb; 1200 int submode = XY_STATE(fullmode); 1201 1202 /* 1203 * is someone else using the control iopq wait for it if we can 1204 */ 1205 start: 1206 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1207 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1208 return(XY_ERR_FAIL); 1209 goto start; 1210 } 1211 1212 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1213 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1214 iorq->mode = XY_SUB_FREE; 1215 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1216 } 1217 1218 /* init iorq/iopb */ 1219 1220 xyc_rqinit(iorq, xycsc, 1221 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1222 fullmode, block, scnt, dptr, NULL); 1223 1224 /* load IOPB from iorq */ 1225 1226 xyc_rqtopb(iorq, iopb, cmd, subfn); 1227 1228 /* submit it for processing */ 1229 1230 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1231 1232 return(XY_ERR_AOK); 1233 } 1234 1235 /* 1236 * xyc_startbuf 1237 * start a buffer for running 1238 */ 1239 1240 int 1241 xyc_startbuf(xycsc, xysc, bp) 1242 struct xyc_softc *xycsc; 1243 struct xy_softc *xysc; 1244 struct buf *bp; 1245 1246 { 1247 int partno; 1248 struct xy_iorq *iorq; 1249 struct xy_iopb *iopb; 1250 u_long block; 1251 caddr_t dbuf; 1252 1253 iorq = xysc->xyrq; 1254 iopb = iorq->iopb; 1255 1256 /* get buf */ 1257 1258 if (bp == NULL) 1259 panic("xyc_startbuf null buf"); 1260 1261 partno = DISKPART(bp->b_dev); 1262 #ifdef XYC_DEBUG 1263 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1264 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1265 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1266 bp->b_bcount, bp->b_data); 1267 #endif 1268 1269 /* 1270 * load request. 1271 * 1272 * also, note that there are two kinds of buf structures, those with 1273 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1274 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1275 * buffer which has already been mapped into DVMA space. (Not on sun3) 1276 * However, if B_PHYS is not set, then the buffer is a normal system 1277 * buffer which does *not* live in DVMA space. In that case we call 1278 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1279 * 1280 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1281 * as mapped into DVMA space, where as the bp->b_data points to its 1282 * non-DVMA mapping. 1283 * 1284 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1285 * into dvma space, only that it was remapped into the kernel. 1286 * We ALWAYS have to remap the kernel buf into DVMA space. 1287 * (It is done inexpensively, using whole segments!) 1288 */ 1289 1290 block = bp->b_rawblkno; 1291 1292 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1293 if (dbuf == NULL) { /* out of DVMA space */ 1294 printf("%s: warning: out of DVMA space\n", 1295 xycsc->sc_dev.dv_xname); 1296 return (XY_ERR_FAIL); /* XXX: need some sort of 1297 * call-back scheme here? */ 1298 } 1299 1300 /* init iorq and load iopb from it */ 1301 1302 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1303 bp->b_bcount / XYFM_BPS, dbuf, bp); 1304 1305 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1306 1307 /* Instrumentation. */ 1308 disk_busy(&xysc->sc_dk); 1309 1310 return (XY_ERR_AOK); 1311 } 1312 1313 1314 /* 1315 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1316 * if ok. if it fail returns an error code. type is XY_SUB_*. 1317 * 1318 * note: caller frees iorq in all cases except NORM 1319 * 1320 * return value: 1321 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1322 * WAIT: XY_AOK (success), <error-code> (failed) 1323 * POLL: <same as WAIT> 1324 * NOQ : <same as NORM> 1325 * 1326 * there are three sources for i/o requests: 1327 * [1] xystrategy: normal block I/O, using "struct buf" system. 1328 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1329 * [3] open/ioctl: these are I/O requests done in the context of a process, 1330 * and the process should block until they are done. 1331 * 1332 * software state is stored in the iorq structure. each iorq has an 1333 * iopb structure. the hardware understands the iopb structure. 1334 * every command must go through an iopb. a 450 handles one iopb at a 1335 * time, where as a 451 can take them in chains. [the 450 claims it 1336 * can handle chains, but is appears to be buggy...] iopb are allocated 1337 * in DVMA space at boot up time. each disk gets one iopb, and the 1338 * controller gets one (for POLL and WAIT commands). what happens if 1339 * the iopb is busy? for i/o type [1], the buffers are queued at the 1340 * "buff" layer and * picked up later by the interrupt routine. for case 1341 * [2] we can only be blocked if there is a WAIT type I/O request being 1342 * run. since this can only happen when we are crashing, we wait a sec 1343 * and then steal the IOPB. for case [3] the process can sleep 1344 * on the iorq free list until some iopbs are avaliable. 1345 */ 1346 1347 1348 int 1349 xyc_submit_iorq(xycsc, iorq, type) 1350 struct xyc_softc *xycsc; 1351 struct xy_iorq *iorq; 1352 int type; 1353 1354 { 1355 struct xy_iopb *iopb; 1356 u_long iopbaddr; 1357 1358 #ifdef XYC_DEBUG 1359 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1360 xycsc->sc_dev.dv_xname, iorq, type); 1361 #endif 1362 1363 /* first check and see if controller is busy */ 1364 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1365 #ifdef XYC_DEBUG 1366 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1367 #endif 1368 if (type == XY_SUB_NOQ) 1369 return (XY_ERR_FAIL); /* failed */ 1370 switch (type) { 1371 case XY_SUB_NORM: 1372 return XY_ERR_AOK; /* success */ 1373 case XY_SUB_WAIT: 1374 while (iorq->iopb->done == 0) { 1375 sleep(iorq, PRIBIO); 1376 } 1377 return (iorq->errno); 1378 case XY_SUB_POLL: /* steal controller */ 1379 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1380 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1381 panic("xyc_submit_iorq: stuck xyc"); 1382 printf("%s: stole controller\n", 1383 xycsc->sc_dev.dv_xname); 1384 break; 1385 default: 1386 panic("xyc_submit_iorq adding"); 1387 } 1388 } 1389 1390 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1391 if (iopb == NULL) { /* nothing doing? */ 1392 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1393 return(XY_ERR_AOK); 1394 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1395 } 1396 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1397 1398 XYC_GO(xycsc->xyc, iopbaddr); 1399 1400 /* command now running, wrap it up */ 1401 switch (type) { 1402 case XY_SUB_NORM: 1403 case XY_SUB_NOQ: 1404 return (XY_ERR_AOK); /* success */ 1405 case XY_SUB_WAIT: 1406 while (iorq->iopb->done == 0) { 1407 sleep(iorq, PRIBIO); 1408 } 1409 return (iorq->errno); 1410 case XY_SUB_POLL: 1411 return (xyc_piodriver(xycsc, iorq)); 1412 default: 1413 panic("xyc_submit_iorq wrap up"); 1414 } 1415 panic("xyc_submit_iorq"); 1416 return 0; /* not reached */ 1417 } 1418 1419 1420 /* 1421 * xyc_chain: build a chain. return dvma address of first element in 1422 * the chain. iorq != NULL: means we only want that item on the chain. 1423 */ 1424 1425 struct xy_iopb * 1426 xyc_chain(xycsc, iorq) 1427 struct xyc_softc *xycsc; 1428 struct xy_iorq *iorq; 1429 { 1430 int togo, chain, hand; 1431 struct xy_iopb *iopb, *prev_iopb; 1432 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1433 1434 /* 1435 * promote control IOPB to the top 1436 */ 1437 if (iorq == NULL) { 1438 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1439 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1440 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1441 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1442 } 1443 /* 1444 * special case: if iorq != NULL then we have a POLL or WAIT request. 1445 * we let these take priority and do them first. 1446 */ 1447 if (iorq) { 1448 xycsc->xy_chain[0] = iorq; 1449 iorq->iopb->chen = 0; 1450 return(iorq->iopb); 1451 } 1452 1453 /* 1454 * NORM case: do round robin and maybe chain (if allowed and possible) 1455 */ 1456 1457 chain = 0; 1458 hand = xycsc->xy_hand; 1459 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1460 1461 for (togo = XYC_MAXIOPB ; 1462 togo > 0 ; 1463 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1464 { 1465 1466 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1467 xycsc->iopbase[hand].done) 1468 continue; /* not ready-for-i/o */ 1469 1470 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1471 iopb = xycsc->xy_chain[chain]->iopb; 1472 iopb->chen = 0; 1473 if (chain != 0) { /* adding a link to a chain? */ 1474 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1475 prev_iopb->chen = 1; 1476 prev_iopb->nxtiopb = 0xffff & 1477 dvma_kvtopa(iopb, xycsc->bustype); 1478 } else { /* head of chain */ 1479 iorq = xycsc->xy_chain[chain]; 1480 } 1481 chain++; 1482 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1483 } 1484 return(iorq ? iorq->iopb : NULL); 1485 } 1486 1487 /* 1488 * xyc_piodriver 1489 * 1490 * programmed i/o driver. this function takes over the computer 1491 * and drains off the polled i/o request. it returns the status of the iorq 1492 * the caller is interesting in. 1493 */ 1494 int 1495 xyc_piodriver(xycsc, iorq) 1496 struct xyc_softc *xycsc; 1497 struct xy_iorq *iorq; 1498 1499 { 1500 int nreset = 0; 1501 int retval = 0; 1502 u_long res; 1503 1504 #ifdef XYC_DEBUG 1505 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1506 #endif 1507 1508 while (iorq->iopb->done == 0) { 1509 1510 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1511 1512 /* we expect some progress soon */ 1513 if (res == XY_ERR_FAIL && nreset >= 2) { 1514 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1515 #ifdef XYC_DEBUG 1516 printf("xyc_piodriver: timeout\n"); 1517 #endif 1518 return (XY_ERR_FAIL); 1519 } 1520 if (res == XY_ERR_FAIL) { 1521 if (xyc_reset(xycsc, 0, 1522 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1523 XY_ERR_FAIL, 1524 0) == XY_ERR_FAIL) 1525 return (XY_ERR_FAIL); /* flushes all but POLL 1526 * requests, resets */ 1527 continue; 1528 } 1529 1530 xyc_remove_iorq(xycsc); /* may resubmit request */ 1531 1532 if (iorq->iopb->done == 0) 1533 xyc_start(xycsc, iorq); 1534 } 1535 1536 /* get return value */ 1537 1538 retval = iorq->errno; 1539 1540 #ifdef XYC_DEBUG 1541 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1542 iorq->errno, xyc_e2str(iorq->errno)); 1543 #endif 1544 1545 /* start up any bufs that have queued */ 1546 1547 xyc_start(xycsc, NULL); 1548 1549 return (retval); 1550 } 1551 1552 /* 1553 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1554 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1555 */ 1556 void 1557 xyc_xyreset(xycsc, xysc) 1558 struct xyc_softc *xycsc; 1559 struct xy_softc *xysc; 1560 1561 { 1562 struct xy_iopb tmpiopb; 1563 u_long addr; 1564 int del; 1565 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1566 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1567 xycsc->ciopb->ien = 0; 1568 xycsc->ciopb->com = XYCMD_RST; 1569 xycsc->ciopb->unit = xysc->xy_drive; 1570 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1571 1572 XYC_GO(xycsc->xyc, addr); 1573 1574 del = XYC_RESETUSEC; 1575 while (del > 0) { 1576 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1577 DELAY(1); 1578 del--; 1579 } 1580 1581 if (del <= 0 || xycsc->ciopb->errs) { 1582 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1583 xyc_e2str(xycsc->ciopb->errno)); 1584 del = xycsc->xyc->xyc_rsetup; 1585 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1586 panic("xyc_reset"); 1587 } else { 1588 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1589 } 1590 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1591 } 1592 1593 1594 /* 1595 * xyc_reset: reset everything: requests are marked as errors except 1596 * a polled request (which is resubmitted) 1597 */ 1598 int 1599 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1600 struct xyc_softc *xycsc; 1601 int quiet, error; 1602 struct xy_iorq *blastmode; 1603 struct xy_softc *xysc; 1604 1605 { 1606 int del = 0, lcv, retval = XY_ERR_AOK; 1607 struct xy_iorq *iorq; 1608 1609 /* soft reset hardware */ 1610 1611 if (!quiet) 1612 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1613 del = xycsc->xyc->xyc_rsetup; 1614 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1615 if (del == XY_ERR_FAIL) { 1616 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1617 retval = XY_ERR_FAIL; 1618 } 1619 if (xysc) 1620 xyc_xyreset(xycsc, xysc); 1621 1622 /* fix queues based on "blast-mode" */ 1623 1624 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1625 iorq = &xycsc->reqs[lcv]; 1626 1627 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1628 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1629 XY_STATE(iorq->mode) != XY_SUB_NORM) 1630 /* is it active? */ 1631 continue; 1632 1633 if (blastmode == XY_RSET_ALL || 1634 blastmode != iorq) { 1635 /* failed */ 1636 iorq->errno = error; 1637 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1638 switch (XY_STATE(iorq->mode)) { 1639 case XY_SUB_NORM: 1640 iorq->buf->b_error = EIO; 1641 iorq->buf->b_flags |= B_ERROR; 1642 iorq->buf->b_resid = 1643 iorq->sectcnt * XYFM_BPS; 1644 /* Sun3: map/unmap regardless of B_PHYS */ 1645 dvma_mapout(iorq->dbufbase, 1646 iorq->buf->b_bcount); 1647 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1648 disk_unbusy(&iorq->xy->sc_dk, 1649 (iorq->buf->b_bcount - 1650 iorq->buf->b_resid)); 1651 biodone(iorq->buf); 1652 iorq->mode = XY_SUB_FREE; 1653 break; 1654 case XY_SUB_WAIT: 1655 wakeup(iorq); 1656 case XY_SUB_POLL: 1657 iorq->mode = 1658 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1659 break; 1660 } 1661 1662 } else { 1663 1664 /* resubmit, no need to do anything here */ 1665 } 1666 } 1667 1668 /* 1669 * now, if stuff is waiting, start it. 1670 * since we just reset it should go 1671 */ 1672 xyc_start(xycsc, NULL); 1673 1674 return (retval); 1675 } 1676 1677 /* 1678 * xyc_start: start waiting buffers 1679 */ 1680 1681 void 1682 xyc_start(xycsc, iorq) 1683 struct xyc_softc *xycsc; 1684 struct xy_iorq *iorq; 1685 1686 { 1687 int lcv; 1688 struct xy_softc *xy; 1689 1690 if (iorq == NULL) { 1691 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1692 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1693 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1694 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1695 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1696 } 1697 } 1698 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1699 } 1700 1701 /* 1702 * xyc_remove_iorq: remove "done" IOPB's. 1703 */ 1704 1705 int 1706 xyc_remove_iorq(xycsc) 1707 struct xyc_softc *xycsc; 1708 1709 { 1710 int errno, rq, comm, errs; 1711 struct xyc *xyc = xycsc->xyc; 1712 u_long addr; 1713 struct xy_iopb *iopb; 1714 struct xy_iorq *iorq; 1715 struct buf *bp; 1716 1717 if (xyc->xyc_csr & XYC_DERR) { 1718 /* 1719 * DOUBLE ERROR: should never happen under normal use. This 1720 * error is so bad, you can't even tell which IOPB is bad, so 1721 * we dump them all. 1722 */ 1723 errno = XY_ERR_DERR; 1724 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1725 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1726 printf("%s: soft reset failed!\n", 1727 xycsc->sc_dev.dv_xname); 1728 panic("xyc_remove_iorq: controller DEAD"); 1729 } 1730 return (XY_ERR_AOK); 1731 } 1732 1733 /* 1734 * get iopb that is done, loop down the chain 1735 */ 1736 1737 if (xyc->xyc_csr & XYC_ERR) { 1738 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1739 } 1740 if (xyc->xyc_csr & XYC_IPND) { 1741 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1742 } 1743 1744 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1745 iorq = xycsc->xy_chain[rq]; 1746 if (iorq == NULL) break; /* done ! */ 1747 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1748 continue; /* free, or done */ 1749 iopb = iorq->iopb; 1750 if (iopb->done == 0) 1751 continue; /* not done yet */ 1752 1753 comm = iopb->com; 1754 errs = iopb->errs; 1755 1756 if (errs) 1757 iorq->errno = iopb->errno; 1758 else 1759 iorq->errno = 0; 1760 1761 /* handle non-fatal errors */ 1762 1763 if (errs && 1764 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1765 continue; /* AOK: we resubmitted it */ 1766 1767 1768 /* this iorq is now done (hasn't been restarted or anything) */ 1769 1770 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1771 xyc_perror(iorq, iopb, 0); 1772 1773 /* now, if read/write check to make sure we got all the data 1774 * we needed. (this may not be the case if we got an error in 1775 * the middle of a multisector request). */ 1776 1777 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1778 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1779 /* we just successfully processed a bad144 sector 1780 * note: if we are in bad 144 mode, the pointers have 1781 * been advanced already (see above) and are pointing 1782 * at the bad144 sector. to exit bad144 mode, we 1783 * must advance the pointers 1 sector and issue a new 1784 * request if there are still sectors left to process 1785 * 1786 */ 1787 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1788 1789 /* exit b144 mode */ 1790 iorq->mode = iorq->mode & (~XY_MODE_B144); 1791 1792 if (iorq->sectcnt) { /* more to go! */ 1793 iorq->lasterror = iorq->errno = iopb->errno = 0; 1794 iopb->errs = iopb->done = 0; 1795 iorq->tries = 0; 1796 iopb->scnt = iorq->sectcnt; 1797 iopb->cyl = iorq->blockno / 1798 iorq->xy->sectpercyl; 1799 iopb->head = 1800 (iorq->blockno / iorq->xy->nhead) % 1801 iorq->xy->nhead; 1802 iopb->sect = iorq->blockno % XYFM_BPS; 1803 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1804 iopb->dataa = (addr & 0xffff); 1805 iopb->datar = ((addr & 0xff0000) >> 16); 1806 /* will resubit at end */ 1807 continue; 1808 } 1809 } 1810 /* final cleanup, totally done with this request */ 1811 1812 switch (XY_STATE(iorq->mode)) { 1813 case XY_SUB_NORM: 1814 bp = iorq->buf; 1815 if (errs) { 1816 bp->b_error = EIO; 1817 bp->b_flags |= B_ERROR; 1818 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1819 } else { 1820 bp->b_resid = 0; /* done */ 1821 } 1822 /* Sun3: map/unmap regardless of B_PHYS */ 1823 dvma_mapout(iorq->dbufbase, 1824 iorq->buf->b_bcount); 1825 BUFQ_REMOVE(&iorq->xy->xyq, bp); 1826 disk_unbusy(&iorq->xy->sc_dk, 1827 (bp->b_bcount - bp->b_resid)); 1828 iorq->mode = XY_SUB_FREE; 1829 biodone(bp); 1830 break; 1831 case XY_SUB_WAIT: 1832 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1833 wakeup(iorq); 1834 break; 1835 case XY_SUB_POLL: 1836 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1837 break; 1838 } 1839 } 1840 1841 return (XY_ERR_AOK); 1842 } 1843 1844 /* 1845 * xyc_perror: print error. 1846 * - if still_trying is true: we got an error, retried and got a 1847 * different error. in that case lasterror is the old error, 1848 * and errno is the new one. 1849 * - if still_trying is not true, then if we ever had an error it 1850 * is in lasterror. also, if iorq->errno == 0, then we recovered 1851 * from that error (otherwise iorq->errno == iorq->lasterror). 1852 */ 1853 void 1854 xyc_perror(iorq, iopb, still_trying) 1855 struct xy_iorq *iorq; 1856 struct xy_iopb *iopb; 1857 int still_trying; 1858 1859 { 1860 1861 int error = iorq->lasterror; 1862 1863 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1864 : iorq->xyc->sc_dev.dv_xname); 1865 if (iorq->buf) 1866 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1867 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1868 printf("%s %d/%d/%d: ", 1869 (iopb->com == XYCMD_RD) ? "read" : "write", 1870 iopb->cyl, iopb->head, iopb->sect); 1871 printf("%s", xyc_e2str(error)); 1872 1873 if (still_trying) 1874 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1875 else 1876 if (iorq->errno == 0) 1877 printf(" [recovered in %d tries]", iorq->tries); 1878 1879 printf("\n"); 1880 } 1881 1882 /* 1883 * xyc_error: non-fatal error encountered... recover. 1884 * return AOK if resubmitted, return FAIL if this iopb is done 1885 */ 1886 int 1887 xyc_error(xycsc, iorq, iopb, comm) 1888 struct xyc_softc *xycsc; 1889 struct xy_iorq *iorq; 1890 struct xy_iopb *iopb; 1891 int comm; 1892 1893 { 1894 int errno = iorq->errno; 1895 int erract = xyc_entoact(errno); 1896 int oldmode, advance, i; 1897 1898 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1899 oldmode = iorq->mode; 1900 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1901 /* make xyc_start ignore us */ 1902 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1903 iorq->mode = oldmode; 1904 } 1905 /* check for read/write to a sector in bad144 table if bad: redirect 1906 * request to bad144 area */ 1907 1908 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1909 (iorq->mode & XY_MODE_B144) == 0) { 1910 advance = iorq->sectcnt - iopb->scnt; 1911 XYC_ADVANCE(iorq, advance); 1912 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1913 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1914 iorq->blockno % iorq->xy->nsect)) != -1) { 1915 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1916 * redirect */ 1917 iopb->errno = iopb->done = iopb->errs = 0; 1918 iopb->scnt = 1; 1919 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1920 /* second to last acyl */ 1921 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1922 * standard */ 1923 iopb->head = i / iorq->xy->nhead; 1924 iopb->sect = i % iorq->xy->nhead; 1925 /* will resubmit when we come out of remove_iorq */ 1926 return (XY_ERR_AOK); /* recovered! */ 1927 } 1928 } 1929 1930 /* 1931 * it isn't a bad144 sector, must be real error! see if we can retry 1932 * it? 1933 */ 1934 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1935 xyc_perror(iorq, iopb, 1); /* inform of error state 1936 * change */ 1937 iorq->lasterror = errno; 1938 1939 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1940 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1941 iorq->tries++; 1942 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1943 /* will resubmit at end of remove_iorq */ 1944 return (XY_ERR_AOK); /* recovered! */ 1945 } 1946 1947 /* failed to recover from this error */ 1948 return (XY_ERR_FAIL); 1949 } 1950 1951 /* 1952 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1953 */ 1954 void 1955 xyc_tick(arg) 1956 void *arg; 1957 1958 { 1959 struct xyc_softc *xycsc = arg; 1960 int lcv, s, reset = 0; 1961 1962 /* reduce ttl for each request if one goes to zero, reset xyc */ 1963 s = splbio(); 1964 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1965 if (xycsc->reqs[lcv].mode == 0 || 1966 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1967 continue; 1968 xycsc->reqs[lcv].ttl--; 1969 if (xycsc->reqs[lcv].ttl == 0) 1970 reset = 1; 1971 } 1972 if (reset) { 1973 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1974 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1975 } 1976 splx(s); 1977 1978 /* until next time */ 1979 1980 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1981 } 1982 1983 /* 1984 * xyc_ioctlcmd: this function provides a user level interface to the 1985 * controller via ioctl. this allows "format" programs to be written 1986 * in user code, and is also useful for some debugging. we return 1987 * an error code. called at user priority. 1988 * 1989 * XXX missing a few commands (see the 7053 driver for ideas) 1990 */ 1991 int 1992 xyc_ioctlcmd(xy, dev, xio) 1993 struct xy_softc *xy; 1994 dev_t dev; 1995 struct xd_iocmd *xio; 1996 1997 { 1998 int s, err, rqno; 1999 void * dvmabuf = NULL; 2000 struct xyc_softc *xycsc; 2001 2002 /* check sanity of requested command */ 2003 2004 switch (xio->cmd) { 2005 2006 case XYCMD_NOP: /* no op: everything should be zero */ 2007 if (xio->subfn || xio->dptr || xio->dlen || 2008 xio->block || xio->sectcnt) 2009 return (EINVAL); 2010 break; 2011 2012 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2013 case XYCMD_WR: 2014 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2015 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2016 return (EINVAL); 2017 break; 2018 2019 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2020 return (EINVAL); 2021 2022 break; 2023 2024 default: 2025 return (EINVAL);/* ??? */ 2026 } 2027 2028 /* create DVMA buffer for request if needed */ 2029 2030 if (xio->dlen) { 2031 dvmabuf = dvma_malloc(xio->dlen); 2032 if (xio->cmd == XYCMD_WR) { 2033 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2034 if (err) { 2035 dvma_free(dvmabuf, xio->dlen); 2036 return (err); 2037 } 2038 } 2039 } 2040 /* do it! */ 2041 2042 err = 0; 2043 xycsc = xy->parent; 2044 s = splbio(); 2045 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2046 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2047 if (rqno == XY_ERR_FAIL) { 2048 err = EIO; 2049 goto done; 2050 } 2051 xio->errno = xycsc->ciorq->errno; 2052 xio->tries = xycsc->ciorq->tries; 2053 XYC_DONE(xycsc, err); 2054 2055 if (xio->cmd == XYCMD_RD) 2056 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2057 2058 done: 2059 splx(s); 2060 if (dvmabuf) 2061 dvma_free(dvmabuf, xio->dlen); 2062 return (err); 2063 } 2064 2065 /* 2066 * xyc_e2str: convert error code number into an error string 2067 */ 2068 char * 2069 xyc_e2str(no) 2070 int no; 2071 { 2072 switch (no) { 2073 case XY_ERR_FAIL: 2074 return ("Software fatal error"); 2075 case XY_ERR_DERR: 2076 return ("DOUBLE ERROR"); 2077 case XY_ERR_AOK: 2078 return ("Successful completion"); 2079 case XY_ERR_IPEN: 2080 return("Interrupt pending"); 2081 case XY_ERR_BCFL: 2082 return("Busy conflict"); 2083 case XY_ERR_TIMO: 2084 return("Operation timeout"); 2085 case XY_ERR_NHDR: 2086 return("Header not found"); 2087 case XY_ERR_HARD: 2088 return("Hard ECC error"); 2089 case XY_ERR_ICYL: 2090 return("Illegal cylinder address"); 2091 case XY_ERR_ISEC: 2092 return("Illegal sector address"); 2093 case XY_ERR_SMAL: 2094 return("Last sector too small"); 2095 case XY_ERR_SACK: 2096 return("Slave ACK error (non-existent memory)"); 2097 case XY_ERR_CHER: 2098 return("Cylinder and head/header error"); 2099 case XY_ERR_SRTR: 2100 return("Auto-seek retry successful"); 2101 case XY_ERR_WPRO: 2102 return("Write-protect error"); 2103 case XY_ERR_UIMP: 2104 return("Unimplemented command"); 2105 case XY_ERR_DNRY: 2106 return("Drive not ready"); 2107 case XY_ERR_SZER: 2108 return("Sector count zero"); 2109 case XY_ERR_DFLT: 2110 return("Drive faulted"); 2111 case XY_ERR_ISSZ: 2112 return("Illegal sector size"); 2113 case XY_ERR_SLTA: 2114 return("Self test A"); 2115 case XY_ERR_SLTB: 2116 return("Self test B"); 2117 case XY_ERR_SLTC: 2118 return("Self test C"); 2119 case XY_ERR_SOFT: 2120 return("Soft ECC error"); 2121 case XY_ERR_SFOK: 2122 return("Soft ECC error recovered"); 2123 case XY_ERR_IHED: 2124 return("Illegal head"); 2125 case XY_ERR_DSEQ: 2126 return("Disk sequencer error"); 2127 case XY_ERR_SEEK: 2128 return("Seek error"); 2129 default: 2130 return ("Unknown error"); 2131 } 2132 } 2133 2134 int 2135 xyc_entoact(errno) 2136 2137 int errno; 2138 2139 { 2140 switch (errno) { 2141 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2142 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2143 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2144 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2145 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2146 2147 return(XY_ERA_PROG); /* program error ! */ 2148 2149 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2150 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2151 case XY_ERR_SOFT: 2152 2153 return(XY_ERA_HARD); /* hard error, retry */ 2154 2155 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2156 2157 return(XY_ERA_RSET); /* hard error reset */ 2158 2159 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2160 2161 return(XY_ERA_SOFT); /* an FYI error */ 2162 2163 case XY_ERR_WPRO: 2164 2165 return(XY_ERA_WPRO); /* write protect */ 2166 } 2167 2168 return(XY_ERA_PROG); /* ??? */ 2169 } 2170
Indexes created Mon Sep 29 21:09:56 GMT 2025