xy.c revision 1.41
1 /* $NetBSD: xy.c,v 1.41 2002/10/02 16:02:27 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 <uvm/uvm_extern.h> 78 79 #include <dev/sun/disklabel.h> 80 81 #include <machine/autoconf.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 * Print a complaint when no xy children were specified 92 * in the config file. Better than a link error... 93 * 94 * XXX: Some folks say this driver should be split in two, 95 * but that seems pointless with ONLY one type of child. 96 */ 97 #include "xy.h" 98 #if NXY == 0 99 #error "xyc but no xy?" 100 #endif 101 102 /* 103 * macros 104 */ 105 106 /* 107 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 108 */ 109 #define XYC_GO(XYC, ADDR) { \ 110 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 111 (ADDR) = ((ADDR) >> 8); \ 112 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 113 (ADDR) = ((ADDR) >> 8); \ 114 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 115 (ADDR) = ((ADDR) >> 8); \ 116 (XYC)->xyc_reloc_hi = (ADDR); \ 117 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 118 } 119 120 /* 121 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 122 */ 123 124 #define XYC_DONE(SC,ER) { \ 125 if ((ER) == XY_ERR_AOK) { \ 126 (ER) = (SC)->ciorq->errno; \ 127 (SC)->ciorq->mode = XY_SUB_FREE; \ 128 wakeup((SC)->ciorq); \ 129 } \ 130 } 131 132 /* 133 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 134 */ 135 136 #define XYC_ADVANCE(IORQ, N) { \ 137 if (N) { \ 138 (IORQ)->sectcnt -= (N); \ 139 (IORQ)->blockno += (N); \ 140 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 141 } \ 142 } 143 144 /* 145 * note - addresses you can sleep on: 146 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 147 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 148 */ 149 150 151 /* 152 * function prototypes 153 * "xyc_*" functions are internal, all others are external interfaces 154 */ 155 156 /* internals */ 157 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 158 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 159 char *xyc_e2str __P((int)); 160 int xyc_entoact __P((int)); 161 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 162 struct xy_iopb *, int)); 163 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 164 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 165 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 166 int xyc_remove_iorq __P((struct xyc_softc *)); 167 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 168 struct xy_softc *)); 169 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 170 struct xy_softc *, int, u_long, int, 171 caddr_t, struct buf *)); 172 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 173 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 174 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 175 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 176 void xyc_tick __P((void *)); 177 int xyc_unbusy __P((struct xyc *, int)); 178 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 179 180 /* machine interrupt hook */ 181 int xycintr __P((void *)); 182 183 /* autoconf */ 184 static int xycmatch __P((struct device *, struct cfdata *, void *)); 185 static void xycattach __P((struct device *, struct device *, void *)); 186 static int xyc_print __P((void *, const char *name)); 187 188 static int xymatch __P((struct device *, struct cfdata *, void *)); 189 static void xyattach __P((struct device *, struct device *, void *)); 190 static void xy_init __P((struct xy_softc *)); 191 192 static void xydummystrat __P((struct buf *)); 193 int xygetdisklabel __P((struct xy_softc *, void *)); 194 195 /* 196 * cfattach's: device driver interface to autoconfig 197 */ 198 199 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 200 xycmatch, xycattach, NULL, NULL); 201 202 CFATTACH_DECL(xy, sizeof(struct xy_softc), 203 xymatch, xyattach, NULL, NULL); 204 205 extern struct cfdriver xy_cd; 206 207 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 208 int driveno; /* unit number */ 209 }; 210 211 dev_type_open(xyopen); 212 dev_type_close(xyclose); 213 dev_type_read(xyread); 214 dev_type_write(xywrite); 215 dev_type_ioctl(xyioctl); 216 dev_type_strategy(xystrategy); 217 dev_type_dump(xydump); 218 dev_type_size(xysize); 219 220 const struct bdevsw xy_bdevsw = { 221 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 222 }; 223 224 const struct cdevsw xy_cdevsw = { 225 xyopen, xyclose, xyread, xywrite, xyioctl, 226 nostop, notty, nopoll, nommap, D_DISK 227 }; 228 229 /* 230 * dkdriver 231 */ 232 233 struct dkdriver xydkdriver = { xystrategy }; 234 235 /* 236 * start: disk label fix code (XXX) 237 */ 238 239 static void *xy_labeldata; 240 241 static void 242 xydummystrat(bp) 243 struct buf *bp; 244 { 245 if (bp->b_bcount != XYFM_BPS) 246 panic("xydummystrat"); 247 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 248 bp->b_flags |= B_DONE; 249 bp->b_flags &= ~B_BUSY; 250 } 251 252 int 253 xygetdisklabel(xy, b) 254 struct xy_softc *xy; 255 void *b; 256 { 257 char *err; 258 struct sun_disklabel *sdl; 259 260 /* We already have the label data in `b'; setup for dummy strategy */ 261 xy_labeldata = b; 262 263 /* Required parameter for readdisklabel() */ 264 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 265 266 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 267 xydummystrat, 268 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 269 if (err) { 270 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 271 return(XY_ERR_FAIL); 272 } 273 274 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 275 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 276 if (sdl->sl_magic == SUN_DKMAGIC) 277 xy->pcyl = sdl->sl_pcyl; 278 else { 279 printf("%s: WARNING: no `pcyl' in disk label.\n", 280 xy->sc_dev.dv_xname); 281 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 282 xy->sc_dk.dk_label->d_acylinders; 283 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 284 xy->sc_dev.dv_xname, xy->pcyl); 285 } 286 287 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 288 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 289 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 290 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 291 xy->sectpercyl = xy->nhead * xy->nsect; 292 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 293 * sun->bsd */ 294 return(XY_ERR_AOK); 295 } 296 297 /* 298 * end: disk label fix code (XXX) 299 */ 300 301 /* 302 * a u t o c o n f i g f u n c t i o n s 303 */ 304 305 /* 306 * xycmatch: determine if xyc is present or not. we do a 307 * soft reset to detect the xyc. 308 */ 309 static int 310 xycmatch(parent, cf, aux) 311 struct device *parent; 312 struct cfdata *cf; 313 void *aux; 314 { 315 struct confargs *ca = aux; 316 317 /* No default VME address. */ 318 if (ca->ca_paddr == -1) 319 return (0); 320 321 /* Make sure something is there... */ 322 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 323 return (0); 324 325 /* Default interrupt priority. */ 326 if (ca->ca_intpri == -1) 327 ca->ca_intpri = 2; 328 329 return (1); 330 } 331 332 /* 333 * xycattach: attach controller 334 */ 335 static void 336 xycattach(parent, self, aux) 337 struct device *parent, *self; 338 void *aux; 339 { 340 struct xyc_softc *xyc = (void *) self; 341 struct confargs *ca = aux; 342 struct xyc_attach_args xa; 343 int lcv, err, res, pbsz; 344 void *tmp, *tmp2; 345 u_long ultmp; 346 347 /* get addressing and intr level stuff from autoconfig and load it 348 * into our xyc_softc. */ 349 350 xyc->xyc = (struct xyc *) 351 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 352 xyc->bustype = ca->ca_bustype; 353 xyc->ipl = ca->ca_intpri; 354 xyc->vector = ca->ca_intvec; 355 xyc->no_ols = 0; /* XXX should be from config */ 356 357 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 358 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 359 360 /* 361 * allocate and zero buffers 362 * check boundaries of the KVA's ... all IOPBs must reside in 363 * the same 64K region. 364 */ 365 366 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 367 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 368 ultmp = (u_long) tmp; 369 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 370 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 371 dvma_free(tmp2, pbsz); 372 ultmp = (u_long) tmp; 373 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 374 printf("%s: can't alloc IOPB mem in 64K\n", 375 xyc->sc_dev.dv_xname); 376 return; 377 } 378 } 379 memset(tmp, 0, pbsz); 380 xyc->iopbase = tmp; 381 xyc->dvmaiopb = (struct xy_iopb *) 382 dvma_kvtopa(xyc->iopbase, xyc->bustype); 383 xyc->reqs = (struct xy_iorq *) 384 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 385 if (xyc->reqs == NULL) 386 panic("xyc malloc"); 387 memset(xyc->reqs, 0, XYC_MAXIOPB * sizeof(struct xy_iorq)); 388 389 /* 390 * init iorq to iopb pointers, and non-zero fields in the 391 * iopb which never change. 392 */ 393 394 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 395 xyc->xy_chain[lcv] = NULL; 396 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 397 xyc->iopbase[lcv].asr = 1; /* always the same */ 398 xyc->iopbase[lcv].eef = 1; /* always the same */ 399 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 400 xyc->iopbase[lcv].aud = 1; /* always the same */ 401 xyc->iopbase[lcv].relo = 1; /* always the same */ 402 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 403 } 404 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 405 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 406 xyc->xy_hand = 0; 407 408 /* read controller parameters and insure we have a 450/451 */ 409 410 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 411 res = xyc->ciopb->ctyp; 412 XYC_DONE(xyc, err); 413 if (res != XYCT_450) { 414 if (err) 415 printf(": %s: ", xyc_e2str(err)); 416 printf(": doesn't identify as a 450/451\n"); 417 return; 418 } 419 printf(": Xylogics 450/451"); 420 if (xyc->no_ols) 421 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 422 printf("\n"); 423 if (err) { 424 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 425 xyc_e2str(err)); 426 return; 427 } 428 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 429 printf("%s: 24 bit addressing turned off\n", 430 xyc->sc_dev.dv_xname); 431 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 432 printf("to enable 24 bit mode and this driver\n"); 433 return; 434 } 435 436 /* link in interrupt with higher level software */ 437 isr_add_vectored(xycintr, (void *)xyc, 438 ca->ca_intpri, ca->ca_intvec); 439 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 440 xyc->sc_dev.dv_xname, "intr"); 441 442 callout_init(&xyc->sc_tick_ch); 443 444 /* now we must look for disks using autoconfig */ 445 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 446 (void) config_found(self, (void *) &xa, xyc_print); 447 448 /* start the watchdog clock */ 449 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 450 } 451 452 static int 453 xyc_print(aux, name) 454 void *aux; 455 const char *name; 456 { 457 struct xyc_attach_args *xa = aux; 458 459 if (name != NULL) 460 printf("%s: ", name); 461 462 if (xa->driveno != -1) 463 printf(" drive %d", xa->driveno); 464 465 return UNCONF; 466 } 467 468 /* 469 * xymatch: probe for disk. 470 * 471 * note: we almost always say disk is present. this allows us to 472 * spin up and configure a disk after the system is booted (we can 473 * call xyattach!). Also, wire down the relationship between the 474 * xy* and xyc* devices, to simplify boot device identification. 475 */ 476 static int 477 xymatch(parent, cf, aux) 478 struct device *parent; 479 struct cfdata *cf; 480 void *aux; 481 { 482 struct xyc_attach_args *xa = aux; 483 int xy_unit; 484 485 /* Match only on the "wired-down" controller+disk. */ 486 xy_unit = parent->dv_unit * 2 + xa->driveno; 487 if (cf->cf_unit != xy_unit) 488 return (0); 489 490 return (1); 491 } 492 493 /* 494 * xyattach: attach a disk. 495 */ 496 static void 497 xyattach(parent, self, aux) 498 struct device *parent, *self; 499 void *aux; 500 { 501 struct xy_softc *xy = (void *) self; 502 struct xyc_softc *xyc = (void *) parent; 503 struct xyc_attach_args *xa = aux; 504 505 printf("\n"); 506 507 /* 508 * Always re-initialize the disk structure. We want statistics 509 * to start with a clean slate. 510 */ 511 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 512 xy->sc_dk.dk_driver = &xydkdriver; 513 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 514 515 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 516 xy->flags = 0; 517 xy->parent = xyc; 518 519 /* init queue of waiting bufs */ 520 bufq_alloc(&xy->xyq, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 521 xy->xyrq = &xyc->reqs[xa->driveno]; 522 523 xy->xy_drive = xa->driveno; 524 xyc->sc_drives[xa->driveno] = xy; 525 526 /* Do init work common to attach and open. */ 527 xy_init(xy); 528 } 529 530 /* 531 * end of autoconfig functions 532 */ 533 534 /* 535 * Initialize a disk. This can be called from both autoconf and 536 * also from xyopen/xystrategy. 537 */ 538 static void 539 xy_init(xy) 540 struct xy_softc *xy; 541 { 542 struct xyc_softc *xyc; 543 struct dkbad *dkb; 544 void *dvmabuf; 545 int err, spt, mb, blk, lcv, fullmode, newstate; 546 547 xyc = xy->parent; 548 xy->state = XY_DRIVE_ATTACHING; 549 newstate = XY_DRIVE_UNKNOWN; 550 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 551 dvmabuf = dvma_malloc(XYFM_BPS); 552 553 /* first try and reset the drive */ 554 555 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 556 XYC_DONE(xyc, err); 557 if (err == XY_ERR_DNRY) { 558 printf("%s: drive %d: off-line\n", 559 xy->sc_dev.dv_xname, xy->xy_drive); 560 goto done; 561 } 562 if (err) { 563 printf("%s: ERROR 0x%02x (%s)\n", 564 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 565 goto done; 566 } 567 printf("%s: drive %d ready", 568 xy->sc_dev.dv_xname, xy->xy_drive); 569 570 /* 571 * now set drive parameters (to semi-bogus values) so we can read the 572 * disk label. 573 */ 574 xy->pcyl = xy->ncyl = 1; 575 xy->acyl = 0; 576 xy->nhead = 1; 577 xy->nsect = 1; 578 xy->sectpercyl = 1; 579 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 580 xy->dkb.bt_bad[lcv].bt_cyl = 581 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 582 583 /* read disk label */ 584 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 585 xy->drive_type++) { 586 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 587 dvmabuf, fullmode); 588 XYC_DONE(xyc, err); 589 if (err == XY_ERR_AOK) break; 590 } 591 592 if (err != XY_ERR_AOK) { 593 printf("%s: reading disk label failed: %s\n", 594 xy->sc_dev.dv_xname, xyc_e2str(err)); 595 goto done; 596 } 597 printf("%s: drive type %d\n", 598 xy->sc_dev.dv_xname, xy->drive_type); 599 600 newstate = XY_DRIVE_NOLABEL; 601 602 xy->hw_spt = spt = 0; /* XXX needed ? */ 603 /* Attach the disk: must be before getdisklabel to malloc label */ 604 disk_attach(&xy->sc_dk); 605 606 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 607 goto done; 608 609 /* inform the user of what is up */ 610 printf("%s: <%s>, pcyl %d\n", 611 xy->sc_dev.dv_xname, 612 (char *)dvmabuf, xy->pcyl); 613 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 614 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 615 xy->sc_dev.dv_xname, mb, 616 xy->ncyl, xy->nhead, xy->nsect); 617 618 /* 619 * 450/451 stupidity: the drive type is encoded into the format 620 * of the disk. the drive type in the IOPB must match the drive 621 * type in the format, or you will not be able to do I/O to the 622 * disk (you get header not found errors). if you have two drives 623 * of different sizes that have the same drive type in their 624 * formatting then you are out of luck. 625 * 626 * this problem was corrected in the 753/7053. 627 */ 628 629 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 630 struct xy_softc *oxy; 631 632 oxy = xyc->sc_drives[lcv]; 633 if (oxy == NULL || oxy == xy) continue; 634 if (oxy->drive_type != xy->drive_type) continue; 635 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 636 xy->nhead != oxy->nhead) { 637 printf("%s: %s and %s must be the same size!\n", 638 xyc->sc_dev.dv_xname, 639 xy ->sc_dev.dv_xname, 640 oxy->sc_dev.dv_xname); 641 panic("xy drive size mismatch"); 642 } 643 } 644 645 646 /* now set the real drive parameters! */ 647 blk = (xy->nsect - 1) + 648 ((xy->nhead - 1) * xy->nsect) + 649 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 650 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 651 XYC_DONE(xyc, err); 652 if (err) { 653 printf("%s: write drive size failed: %s\n", 654 xy->sc_dev.dv_xname, xyc_e2str(err)); 655 goto done; 656 } 657 newstate = XY_DRIVE_ONLINE; 658 659 /* 660 * read bad144 table. this table resides on the first sector of the 661 * last track of the disk (i.e. second cyl of "acyl" area). 662 */ 663 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 664 /* last cyl */ 665 (xy->nhead - 1) * xy->nsect; /* last head */ 666 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 667 dvmabuf, fullmode); 668 XYC_DONE(xyc, err); 669 if (err) { 670 printf("%s: reading bad144 failed: %s\n", 671 xy->sc_dev.dv_xname, xyc_e2str(err)); 672 goto done; 673 } 674 675 /* check dkbad for sanity */ 676 dkb = (struct dkbad *) dvmabuf; 677 for (lcv = 0; lcv < 126; lcv++) { 678 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 679 dkb->bt_bad[lcv].bt_cyl == 0) && 680 dkb->bt_bad[lcv].bt_trksec == 0xffff) 681 continue; /* blank */ 682 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 683 break; 684 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 685 break; 686 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 687 break; 688 } 689 if (lcv != 126) { 690 printf("%s: warning: invalid bad144 sector!\n", 691 xy->sc_dev.dv_xname); 692 } else { 693 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 694 } 695 696 done: 697 xy->state = newstate; 698 dvma_free(dvmabuf, XYFM_BPS); 699 } 700 701 /* 702 * { b , c } d e v s w f u n c t i o n s 703 */ 704 705 /* 706 * xyclose: close device 707 */ 708 int 709 xyclose(dev, flag, fmt, p) 710 dev_t dev; 711 int flag, fmt; 712 struct proc *p; 713 { 714 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 715 int part = DISKPART(dev); 716 717 /* clear mask bits */ 718 719 switch (fmt) { 720 case S_IFCHR: 721 xy->sc_dk.dk_copenmask &= ~(1 << part); 722 break; 723 case S_IFBLK: 724 xy->sc_dk.dk_bopenmask &= ~(1 << part); 725 break; 726 } 727 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 728 729 return 0; 730 } 731 732 /* 733 * xydump: crash dump system 734 */ 735 int 736 xydump(dev, blkno, va, sz) 737 dev_t dev; 738 daddr_t blkno; 739 caddr_t va; 740 size_t sz; 741 { 742 int unit, part; 743 struct xy_softc *xy; 744 745 unit = DISKUNIT(dev); 746 if (unit >= xy_cd.cd_ndevs) 747 return ENXIO; 748 part = DISKPART(dev); 749 750 xy = xy_cd.cd_devs[unit]; 751 752 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 753 'a' + part); 754 755 return ENXIO; 756 757 /* outline: globals: "dumplo" == sector number of partition to start 758 * dump at (convert to physical sector with partition table) 759 * "dumpsize" == size of dump in clicks "physmem" == size of physical 760 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 761 * physmem) 762 * 763 * dump a copy of physical memory to the dump device starting at sector 764 * "dumplo" in the swap partition (make sure > 0). map in pages as 765 * we go. use polled I/O. 766 * 767 * XXX how to handle NON_CONTIG? 768 */ 769 } 770 771 /* 772 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 773 */ 774 int 775 xyioctl(dev, command, addr, flag, p) 776 dev_t dev; 777 u_long command; 778 caddr_t addr; 779 int flag; 780 struct proc *p; 781 782 { 783 struct xy_softc *xy; 784 struct xd_iocmd *xio; 785 int error, s, unit; 786 787 unit = DISKUNIT(dev); 788 789 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 790 return (ENXIO); 791 792 /* switch on ioctl type */ 793 794 switch (command) { 795 case DIOCSBAD: /* set bad144 info */ 796 if ((flag & FWRITE) == 0) 797 return EBADF; 798 s = splbio(); 799 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 800 splx(s); 801 return 0; 802 803 case DIOCGDINFO: /* get disk label */ 804 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 805 return 0; 806 807 case DIOCGPART: /* get partition info */ 808 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 809 ((struct partinfo *) addr)->part = 810 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 811 return 0; 812 813 case DIOCSDINFO: /* set disk label */ 814 if ((flag & FWRITE) == 0) 815 return EBADF; 816 error = setdisklabel(xy->sc_dk.dk_label, 817 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 818 xy->sc_dk.dk_cpulabel); 819 if (error == 0) { 820 if (xy->state == XY_DRIVE_NOLABEL) 821 xy->state = XY_DRIVE_ONLINE; 822 } 823 return error; 824 825 case DIOCWLABEL: /* change write status of disk label */ 826 if ((flag & FWRITE) == 0) 827 return EBADF; 828 if (*(int *) addr) 829 xy->flags |= XY_WLABEL; 830 else 831 xy->flags &= ~XY_WLABEL; 832 return 0; 833 834 case DIOCWDINFO: /* write disk label */ 835 if ((flag & FWRITE) == 0) 836 return EBADF; 837 error = setdisklabel(xy->sc_dk.dk_label, 838 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 839 xy->sc_dk.dk_cpulabel); 840 if (error == 0) { 841 if (xy->state == XY_DRIVE_NOLABEL) 842 xy->state = XY_DRIVE_ONLINE; 843 844 /* Simulate opening partition 0 so write succeeds. */ 845 xy->sc_dk.dk_openmask |= (1 << 0); 846 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 847 xystrategy, xy->sc_dk.dk_label, 848 xy->sc_dk.dk_cpulabel); 849 xy->sc_dk.dk_openmask = 850 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 851 } 852 return error; 853 854 case DIOSXDCMD: 855 xio = (struct xd_iocmd *) addr; 856 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 857 return (error); 858 return (xyc_ioctlcmd(xy, dev, xio)); 859 860 default: 861 return ENOTTY; 862 } 863 } 864 865 /* 866 * xyopen: open drive 867 */ 868 int 869 xyopen(dev, flag, fmt, p) 870 dev_t dev; 871 int flag, fmt; 872 struct proc *p; 873 { 874 int err, unit, part, s; 875 struct xy_softc *xy; 876 877 /* first, could it be a valid target? */ 878 unit = DISKUNIT(dev); 879 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 880 return (ENXIO); 881 part = DISKPART(dev); 882 err = 0; 883 884 /* 885 * If some other processing is doing init, sleep. 886 */ 887 s = splbio(); 888 while (xy->state == XY_DRIVE_ATTACHING) { 889 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 890 err = EINTR; 891 goto done; 892 } 893 } 894 /* Do we need to init the drive? */ 895 if (xy->state == XY_DRIVE_UNKNOWN) { 896 xy_init(xy); 897 wakeup(&xy->state); 898 } 899 /* Was the init successful? */ 900 if (xy->state == XY_DRIVE_UNKNOWN) { 901 err = EIO; 902 goto done; 903 } 904 905 /* check for partition */ 906 if (part != RAW_PART && 907 (part >= xy->sc_dk.dk_label->d_npartitions || 908 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 909 err = ENXIO; 910 goto done; 911 } 912 913 /* set open masks */ 914 switch (fmt) { 915 case S_IFCHR: 916 xy->sc_dk.dk_copenmask |= (1 << part); 917 break; 918 case S_IFBLK: 919 xy->sc_dk.dk_bopenmask |= (1 << part); 920 break; 921 } 922 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 923 924 done: 925 splx(s); 926 return (err); 927 } 928 929 int 930 xyread(dev, uio, flags) 931 dev_t dev; 932 struct uio *uio; 933 int flags; 934 { 935 936 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 937 } 938 939 int 940 xywrite(dev, uio, flags) 941 dev_t dev; 942 struct uio *uio; 943 int flags; 944 { 945 946 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 947 } 948 949 950 /* 951 * xysize: return size of a partition for a dump 952 */ 953 954 int 955 xysize(dev) 956 dev_t dev; 957 958 { 959 struct xy_softc *xysc; 960 int unit, part, size, omask; 961 962 /* valid unit? */ 963 unit = DISKUNIT(dev); 964 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 965 return (-1); 966 967 part = DISKPART(dev); 968 omask = xysc->sc_dk.dk_openmask & (1 << part); 969 970 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 971 return (-1); 972 973 /* do it */ 974 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 975 size = -1; /* only give valid size for swap partitions */ 976 else 977 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 978 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 979 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 980 return (-1); 981 return (size); 982 } 983 984 /* 985 * xystrategy: buffering system interface to xy. 986 */ 987 void 988 xystrategy(bp) 989 struct buf *bp; 990 991 { 992 struct xy_softc *xy; 993 int s, unit; 994 struct disklabel *lp; 995 daddr_t blkno; 996 997 unit = DISKUNIT(bp->b_dev); 998 999 /* check for live device */ 1000 1001 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1002 bp->b_blkno < 0 || 1003 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1004 bp->b_error = EINVAL; 1005 goto bad; 1006 } 1007 1008 /* There should always be an open first. */ 1009 if (xy->state == XY_DRIVE_UNKNOWN) { 1010 bp->b_error = EIO; 1011 goto bad; 1012 } 1013 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1014 /* no I/O to unlabeled disks, unless raw partition */ 1015 bp->b_error = EIO; 1016 goto bad; 1017 } 1018 /* short circuit zero length request */ 1019 1020 if (bp->b_bcount == 0) 1021 goto done; 1022 1023 /* check bounds with label (disksubr.c). Determine the size of the 1024 * transfer, and make sure it is within the boundaries of the 1025 * partition. Adjust transfer if needed, and signal errors or early 1026 * completion. */ 1027 1028 lp = xy->sc_dk.dk_label; 1029 1030 if (bounds_check_with_label(bp, lp, 1031 (xy->flags & XY_WLABEL) != 0) <= 0) 1032 goto done; 1033 1034 /* 1035 * Now convert the block number to absolute and put it in 1036 * terms of the device's logical block size. 1037 */ 1038 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1039 if (DISKPART(bp->b_dev) != RAW_PART) 1040 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1041 1042 bp->b_rawblkno = blkno; 1043 1044 /* 1045 * now we know we have a valid buf structure that we need to do I/O 1046 * on. 1047 */ 1048 1049 s = splbio(); /* protect the queues */ 1050 1051 BUFQ_PUT(&xy->xyq, bp); /* XXX disksort_cylinder */ 1052 1053 /* start 'em up */ 1054 1055 xyc_start(xy->parent, NULL); 1056 1057 /* done! */ 1058 1059 splx(s); 1060 return; 1061 1062 bad: /* tells upper layers we have an error */ 1063 bp->b_flags |= B_ERROR; 1064 done: /* tells upper layers we are done with this 1065 * buf */ 1066 bp->b_resid = bp->b_bcount; 1067 biodone(bp); 1068 } 1069 /* 1070 * end of {b,c}devsw functions 1071 */ 1072 1073 /* 1074 * i n t e r r u p t f u n c t i o n 1075 * 1076 * xycintr: hardware interrupt. 1077 */ 1078 int 1079 xycintr(v) 1080 void *v; 1081 1082 { 1083 struct xyc_softc *xycsc = v; 1084 1085 /* kick the event counter */ 1086 xycsc->sc_intrcnt.ev_count++; 1087 1088 /* remove as many done IOPBs as possible */ 1089 xyc_remove_iorq(xycsc); 1090 1091 /* start any iorq's already waiting */ 1092 xyc_start(xycsc, NULL); 1093 1094 return (1); 1095 } 1096 /* 1097 * end of interrupt function 1098 */ 1099 1100 /* 1101 * i n t e r n a l f u n c t i o n s 1102 */ 1103 1104 /* 1105 * xyc_rqinit: fill out the fields of an I/O request 1106 */ 1107 1108 inline void 1109 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1110 struct xy_iorq *rq; 1111 struct xyc_softc *xyc; 1112 struct xy_softc *xy; 1113 int md; 1114 u_long blk; 1115 int cnt; 1116 caddr_t db; 1117 struct buf *bp; 1118 { 1119 rq->xyc = xyc; 1120 rq->xy = xy; 1121 rq->ttl = XYC_MAXTTL + 10; 1122 rq->mode = md; 1123 rq->tries = rq->errno = rq->lasterror = 0; 1124 rq->blockno = blk; 1125 rq->sectcnt = cnt; 1126 rq->dbuf = rq->dbufbase = db; 1127 rq->buf = bp; 1128 } 1129 1130 /* 1131 * xyc_rqtopb: load up an IOPB based on an iorq 1132 */ 1133 1134 void 1135 xyc_rqtopb(iorq, iopb, cmd, subfun) 1136 struct xy_iorq *iorq; 1137 struct xy_iopb *iopb; 1138 int cmd, subfun; 1139 1140 { 1141 u_long block, dp; 1142 1143 /* normal IOPB case, standard stuff */ 1144 1145 /* chain bit handled later */ 1146 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1147 iopb->com = cmd; 1148 iopb->errno = 0; 1149 iopb->errs = 0; 1150 iopb->done = 0; 1151 if (iorq->xy) { 1152 iopb->unit = iorq->xy->xy_drive; 1153 iopb->dt = iorq->xy->drive_type; 1154 } else { 1155 iopb->unit = 0; 1156 iopb->dt = 0; 1157 } 1158 block = iorq->blockno; 1159 if (iorq->xy == NULL || block == 0) { 1160 iopb->sect = iopb->head = iopb->cyl = 0; 1161 } else { 1162 iopb->sect = block % iorq->xy->nsect; 1163 block = block / iorq->xy->nsect; 1164 iopb->head = block % iorq->xy->nhead; 1165 block = block / iorq->xy->nhead; 1166 iopb->cyl = block; 1167 } 1168 iopb->scnt = iorq->sectcnt; 1169 if (iorq->dbuf == NULL) { 1170 iopb->dataa = 0; 1171 iopb->datar = 0; 1172 } else { 1173 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1174 iopb->dataa = (dp & 0xffff); 1175 iopb->datar = ((dp & 0xff0000) >> 16); 1176 } 1177 iopb->subfn = subfun; 1178 } 1179 1180 1181 /* 1182 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1183 */ 1184 1185 int 1186 xyc_unbusy(xyc, del) 1187 1188 struct xyc *xyc; 1189 int del; 1190 1191 { 1192 while (del-- > 0) { 1193 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1194 break; 1195 DELAY(1); 1196 } 1197 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1198 } 1199 1200 /* 1201 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1202 * note that NORM requests are handled separately. 1203 */ 1204 int 1205 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1206 struct xyc_softc *xycsc; 1207 int cmd, subfn, unit, block, scnt; 1208 char *dptr; 1209 int fullmode; 1210 { 1211 struct xy_iorq *iorq = xycsc->ciorq; 1212 struct xy_iopb *iopb = xycsc->ciopb; 1213 int submode = XY_STATE(fullmode); 1214 1215 /* 1216 * is someone else using the control iopq wait for it if we can 1217 */ 1218 start: 1219 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1220 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1221 return(XY_ERR_FAIL); 1222 goto start; 1223 } 1224 1225 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1226 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1227 iorq->mode = XY_SUB_FREE; 1228 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1229 } 1230 1231 /* init iorq/iopb */ 1232 1233 xyc_rqinit(iorq, xycsc, 1234 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1235 fullmode, block, scnt, dptr, NULL); 1236 1237 /* load IOPB from iorq */ 1238 1239 xyc_rqtopb(iorq, iopb, cmd, subfn); 1240 1241 /* submit it for processing */ 1242 1243 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1244 1245 return(XY_ERR_AOK); 1246 } 1247 1248 /* 1249 * xyc_startbuf 1250 * start a buffer for running 1251 */ 1252 1253 int 1254 xyc_startbuf(xycsc, xysc, bp) 1255 struct xyc_softc *xycsc; 1256 struct xy_softc *xysc; 1257 struct buf *bp; 1258 1259 { 1260 int partno; 1261 struct xy_iorq *iorq; 1262 struct xy_iopb *iopb; 1263 u_long block; 1264 caddr_t dbuf; 1265 1266 iorq = xysc->xyrq; 1267 iopb = iorq->iopb; 1268 1269 /* get buf */ 1270 1271 if (bp == NULL) 1272 panic("xyc_startbuf null buf"); 1273 1274 partno = DISKPART(bp->b_dev); 1275 #ifdef XYC_DEBUG 1276 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1277 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1278 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1279 bp->b_bcount, bp->b_data); 1280 #endif 1281 1282 /* 1283 * load request. 1284 * 1285 * also, note that there are two kinds of buf structures, those with 1286 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1287 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1288 * buffer which has already been mapped into DVMA space. (Not on sun3) 1289 * However, if B_PHYS is not set, then the buffer is a normal system 1290 * buffer which does *not* live in DVMA space. In that case we call 1291 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1292 * 1293 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1294 * as mapped into DVMA space, where as the bp->b_data points to its 1295 * non-DVMA mapping. 1296 * 1297 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1298 * into dvma space, only that it was remapped into the kernel. 1299 * We ALWAYS have to remap the kernel buf into DVMA space. 1300 * (It is done inexpensively, using whole segments!) 1301 */ 1302 1303 block = bp->b_rawblkno; 1304 1305 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1306 if (dbuf == NULL) { /* out of DVMA space */ 1307 printf("%s: warning: out of DVMA space\n", 1308 xycsc->sc_dev.dv_xname); 1309 return (XY_ERR_FAIL); /* XXX: need some sort of 1310 * call-back scheme here? */ 1311 } 1312 1313 /* init iorq and load iopb from it */ 1314 1315 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1316 bp->b_bcount / XYFM_BPS, dbuf, bp); 1317 1318 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1319 1320 /* Instrumentation. */ 1321 disk_busy(&xysc->sc_dk); 1322 1323 return (XY_ERR_AOK); 1324 } 1325 1326 1327 /* 1328 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1329 * if ok. if it fail returns an error code. type is XY_SUB_*. 1330 * 1331 * note: caller frees iorq in all cases except NORM 1332 * 1333 * return value: 1334 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1335 * WAIT: XY_AOK (success), <error-code> (failed) 1336 * POLL: <same as WAIT> 1337 * NOQ : <same as NORM> 1338 * 1339 * there are three sources for i/o requests: 1340 * [1] xystrategy: normal block I/O, using "struct buf" system. 1341 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1342 * [3] open/ioctl: these are I/O requests done in the context of a process, 1343 * and the process should block until they are done. 1344 * 1345 * software state is stored in the iorq structure. each iorq has an 1346 * iopb structure. the hardware understands the iopb structure. 1347 * every command must go through an iopb. a 450 handles one iopb at a 1348 * time, where as a 451 can take them in chains. [the 450 claims it 1349 * can handle chains, but is appears to be buggy...] iopb are allocated 1350 * in DVMA space at boot up time. each disk gets one iopb, and the 1351 * controller gets one (for POLL and WAIT commands). what happens if 1352 * the iopb is busy? for i/o type [1], the buffers are queued at the 1353 * "buff" layer and * picked up later by the interrupt routine. for case 1354 * [2] we can only be blocked if there is a WAIT type I/O request being 1355 * run. since this can only happen when we are crashing, we wait a sec 1356 * and then steal the IOPB. for case [3] the process can sleep 1357 * on the iorq free list until some iopbs are avaliable. 1358 */ 1359 1360 1361 int 1362 xyc_submit_iorq(xycsc, iorq, type) 1363 struct xyc_softc *xycsc; 1364 struct xy_iorq *iorq; 1365 int type; 1366 1367 { 1368 struct xy_iopb *iopb; 1369 u_long iopbaddr; 1370 1371 #ifdef XYC_DEBUG 1372 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1373 xycsc->sc_dev.dv_xname, iorq, type); 1374 #endif 1375 1376 /* first check and see if controller is busy */ 1377 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1378 #ifdef XYC_DEBUG 1379 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1380 #endif 1381 if (type == XY_SUB_NOQ) 1382 return (XY_ERR_FAIL); /* failed */ 1383 switch (type) { 1384 case XY_SUB_NORM: 1385 return XY_ERR_AOK; /* success */ 1386 case XY_SUB_WAIT: 1387 while (iorq->iopb->done == 0) { 1388 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1389 } 1390 return (iorq->errno); 1391 case XY_SUB_POLL: /* steal controller */ 1392 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1393 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1394 panic("xyc_submit_iorq: stuck xyc"); 1395 printf("%s: stole controller\n", 1396 xycsc->sc_dev.dv_xname); 1397 break; 1398 default: 1399 panic("xyc_submit_iorq adding"); 1400 } 1401 } 1402 1403 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1404 if (iopb == NULL) { /* nothing doing? */ 1405 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1406 return(XY_ERR_AOK); 1407 panic("xyc_submit_iorq: xyc_chain failed!"); 1408 } 1409 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1410 1411 XYC_GO(xycsc->xyc, iopbaddr); 1412 1413 /* command now running, wrap it up */ 1414 switch (type) { 1415 case XY_SUB_NORM: 1416 case XY_SUB_NOQ: 1417 return (XY_ERR_AOK); /* success */ 1418 case XY_SUB_WAIT: 1419 while (iorq->iopb->done == 0) { 1420 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1421 } 1422 return (iorq->errno); 1423 case XY_SUB_POLL: 1424 return (xyc_piodriver(xycsc, iorq)); 1425 default: 1426 panic("xyc_submit_iorq wrap up"); 1427 } 1428 panic("xyc_submit_iorq"); 1429 return 0; /* not reached */ 1430 } 1431 1432 1433 /* 1434 * xyc_chain: build a chain. return dvma address of first element in 1435 * the chain. iorq != NULL: means we only want that item on the chain. 1436 */ 1437 1438 struct xy_iopb * 1439 xyc_chain(xycsc, iorq) 1440 struct xyc_softc *xycsc; 1441 struct xy_iorq *iorq; 1442 { 1443 int togo, chain, hand; 1444 struct xy_iopb *iopb, *prev_iopb; 1445 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1446 1447 /* 1448 * promote control IOPB to the top 1449 */ 1450 if (iorq == NULL) { 1451 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1452 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1453 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1454 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1455 } 1456 /* 1457 * special case: if iorq != NULL then we have a POLL or WAIT request. 1458 * we let these take priority and do them first. 1459 */ 1460 if (iorq) { 1461 xycsc->xy_chain[0] = iorq; 1462 iorq->iopb->chen = 0; 1463 return(iorq->iopb); 1464 } 1465 1466 /* 1467 * NORM case: do round robin and maybe chain (if allowed and possible) 1468 */ 1469 1470 chain = 0; 1471 hand = xycsc->xy_hand; 1472 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1473 1474 for (togo = XYC_MAXIOPB ; 1475 togo > 0 ; 1476 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1477 { 1478 1479 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1480 xycsc->iopbase[hand].done) 1481 continue; /* not ready-for-i/o */ 1482 1483 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1484 iopb = xycsc->xy_chain[chain]->iopb; 1485 iopb->chen = 0; 1486 if (chain != 0) { /* adding a link to a chain? */ 1487 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1488 prev_iopb->chen = 1; 1489 prev_iopb->nxtiopb = 0xffff & 1490 dvma_kvtopa(iopb, xycsc->bustype); 1491 } else { /* head of chain */ 1492 iorq = xycsc->xy_chain[chain]; 1493 } 1494 chain++; 1495 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1496 } 1497 return(iorq ? iorq->iopb : NULL); 1498 } 1499 1500 /* 1501 * xyc_piodriver 1502 * 1503 * programmed i/o driver. this function takes over the computer 1504 * and drains off the polled i/o request. it returns the status of the iorq 1505 * the caller is interesting in. 1506 */ 1507 int 1508 xyc_piodriver(xycsc, iorq) 1509 struct xyc_softc *xycsc; 1510 struct xy_iorq *iorq; 1511 1512 { 1513 int nreset = 0; 1514 int retval = 0; 1515 u_long res; 1516 1517 #ifdef XYC_DEBUG 1518 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1519 #endif 1520 1521 while (iorq->iopb->done == 0) { 1522 1523 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1524 1525 /* we expect some progress soon */ 1526 if (res == XY_ERR_FAIL && nreset >= 2) { 1527 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1528 #ifdef XYC_DEBUG 1529 printf("xyc_piodriver: timeout\n"); 1530 #endif 1531 return (XY_ERR_FAIL); 1532 } 1533 if (res == XY_ERR_FAIL) { 1534 if (xyc_reset(xycsc, 0, 1535 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1536 XY_ERR_FAIL, 1537 0) == XY_ERR_FAIL) 1538 return (XY_ERR_FAIL); /* flushes all but POLL 1539 * requests, resets */ 1540 continue; 1541 } 1542 1543 xyc_remove_iorq(xycsc); /* may resubmit request */ 1544 1545 if (iorq->iopb->done == 0) 1546 xyc_start(xycsc, iorq); 1547 } 1548 1549 /* get return value */ 1550 1551 retval = iorq->errno; 1552 1553 #ifdef XYC_DEBUG 1554 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1555 iorq->errno, xyc_e2str(iorq->errno)); 1556 #endif 1557 1558 /* start up any bufs that have queued */ 1559 1560 xyc_start(xycsc, NULL); 1561 1562 return (retval); 1563 } 1564 1565 /* 1566 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1567 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1568 */ 1569 void 1570 xyc_xyreset(xycsc, xysc) 1571 struct xyc_softc *xycsc; 1572 struct xy_softc *xysc; 1573 1574 { 1575 struct xy_iopb tmpiopb; 1576 u_long addr; 1577 int del; 1578 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1579 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1580 xycsc->ciopb->ien = 0; 1581 xycsc->ciopb->com = XYCMD_RST; 1582 xycsc->ciopb->unit = xysc->xy_drive; 1583 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1584 1585 XYC_GO(xycsc->xyc, addr); 1586 1587 del = XYC_RESETUSEC; 1588 while (del > 0) { 1589 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1590 DELAY(1); 1591 del--; 1592 } 1593 1594 if (del <= 0 || xycsc->ciopb->errs) { 1595 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1596 xyc_e2str(xycsc->ciopb->errno)); 1597 del = xycsc->xyc->xyc_rsetup; 1598 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1599 panic("xyc_reset"); 1600 } else { 1601 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1602 } 1603 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1604 } 1605 1606 1607 /* 1608 * xyc_reset: reset everything: requests are marked as errors except 1609 * a polled request (which is resubmitted) 1610 */ 1611 int 1612 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1613 struct xyc_softc *xycsc; 1614 int quiet, error; 1615 struct xy_iorq *blastmode; 1616 struct xy_softc *xysc; 1617 1618 { 1619 int del = 0, lcv, retval = XY_ERR_AOK; 1620 struct xy_iorq *iorq; 1621 1622 /* soft reset hardware */ 1623 1624 if (!quiet) 1625 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1626 del = xycsc->xyc->xyc_rsetup; 1627 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1628 if (del == XY_ERR_FAIL) { 1629 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1630 retval = XY_ERR_FAIL; 1631 } 1632 if (xysc) 1633 xyc_xyreset(xycsc, xysc); 1634 1635 /* fix queues based on "blast-mode" */ 1636 1637 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1638 iorq = &xycsc->reqs[lcv]; 1639 1640 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1641 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1642 XY_STATE(iorq->mode) != XY_SUB_NORM) 1643 /* is it active? */ 1644 continue; 1645 1646 if (blastmode == XY_RSET_ALL || 1647 blastmode != iorq) { 1648 /* failed */ 1649 iorq->errno = error; 1650 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1651 switch (XY_STATE(iorq->mode)) { 1652 case XY_SUB_NORM: 1653 iorq->buf->b_error = EIO; 1654 iorq->buf->b_flags |= B_ERROR; 1655 iorq->buf->b_resid = 1656 iorq->sectcnt * XYFM_BPS; 1657 /* Sun3: map/unmap regardless of B_PHYS */ 1658 dvma_mapout(iorq->dbufbase, 1659 iorq->buf->b_bcount); 1660 (void)BUFQ_GET(&iorq->xy->xyq); 1661 disk_unbusy(&iorq->xy->sc_dk, 1662 (iorq->buf->b_bcount - 1663 iorq->buf->b_resid)); 1664 biodone(iorq->buf); 1665 iorq->mode = XY_SUB_FREE; 1666 break; 1667 case XY_SUB_WAIT: 1668 wakeup(iorq); 1669 case XY_SUB_POLL: 1670 iorq->mode = 1671 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1672 break; 1673 } 1674 1675 } else { 1676 1677 /* resubmit, no need to do anything here */ 1678 } 1679 } 1680 1681 /* 1682 * now, if stuff is waiting, start it. 1683 * since we just reset it should go 1684 */ 1685 xyc_start(xycsc, NULL); 1686 1687 return (retval); 1688 } 1689 1690 /* 1691 * xyc_start: start waiting buffers 1692 */ 1693 1694 void 1695 xyc_start(xycsc, iorq) 1696 struct xyc_softc *xycsc; 1697 struct xy_iorq *iorq; 1698 1699 { 1700 int lcv; 1701 struct xy_softc *xy; 1702 1703 if (iorq == NULL) { 1704 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1705 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1706 if (BUFQ_PEEK(&xy->xyq) == NULL) continue; 1707 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1708 xyc_startbuf(xycsc, xy, BUFQ_PEEK(&xy->xyq)); 1709 } 1710 } 1711 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1712 } 1713 1714 /* 1715 * xyc_remove_iorq: remove "done" IOPB's. 1716 */ 1717 1718 int 1719 xyc_remove_iorq(xycsc) 1720 struct xyc_softc *xycsc; 1721 1722 { 1723 int errno, rq, comm, errs; 1724 struct xyc *xyc = xycsc->xyc; 1725 u_long addr; 1726 struct xy_iopb *iopb; 1727 struct xy_iorq *iorq; 1728 struct buf *bp; 1729 1730 if (xyc->xyc_csr & XYC_DERR) { 1731 /* 1732 * DOUBLE ERROR: should never happen under normal use. This 1733 * error is so bad, you can't even tell which IOPB is bad, so 1734 * we dump them all. 1735 */ 1736 errno = XY_ERR_DERR; 1737 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1738 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1739 printf("%s: soft reset failed!\n", 1740 xycsc->sc_dev.dv_xname); 1741 panic("xyc_remove_iorq: controller DEAD"); 1742 } 1743 return (XY_ERR_AOK); 1744 } 1745 1746 /* 1747 * get iopb that is done, loop down the chain 1748 */ 1749 1750 if (xyc->xyc_csr & XYC_ERR) { 1751 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1752 } 1753 if (xyc->xyc_csr & XYC_IPND) { 1754 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1755 } 1756 1757 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1758 iorq = xycsc->xy_chain[rq]; 1759 if (iorq == NULL) break; /* done ! */ 1760 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1761 continue; /* free, or done */ 1762 iopb = iorq->iopb; 1763 if (iopb->done == 0) 1764 continue; /* not done yet */ 1765 1766 comm = iopb->com; 1767 errs = iopb->errs; 1768 1769 if (errs) 1770 iorq->errno = iopb->errno; 1771 else 1772 iorq->errno = 0; 1773 1774 /* handle non-fatal errors */ 1775 1776 if (errs && 1777 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1778 continue; /* AOK: we resubmitted it */ 1779 1780 1781 /* this iorq is now done (hasn't been restarted or anything) */ 1782 1783 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1784 xyc_perror(iorq, iopb, 0); 1785 1786 /* now, if read/write check to make sure we got all the data 1787 * we needed. (this may not be the case if we got an error in 1788 * the middle of a multisector request). */ 1789 1790 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1791 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1792 /* we just successfully processed a bad144 sector 1793 * note: if we are in bad 144 mode, the pointers have 1794 * been advanced already (see above) and are pointing 1795 * at the bad144 sector. to exit bad144 mode, we 1796 * must advance the pointers 1 sector and issue a new 1797 * request if there are still sectors left to process 1798 * 1799 */ 1800 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1801 1802 /* exit b144 mode */ 1803 iorq->mode = iorq->mode & (~XY_MODE_B144); 1804 1805 if (iorq->sectcnt) { /* more to go! */ 1806 iorq->lasterror = iorq->errno = iopb->errno = 0; 1807 iopb->errs = iopb->done = 0; 1808 iorq->tries = 0; 1809 iopb->scnt = iorq->sectcnt; 1810 iopb->cyl = iorq->blockno / 1811 iorq->xy->sectpercyl; 1812 iopb->head = 1813 (iorq->blockno / iorq->xy->nhead) % 1814 iorq->xy->nhead; 1815 iopb->sect = iorq->blockno % XYFM_BPS; 1816 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1817 iopb->dataa = (addr & 0xffff); 1818 iopb->datar = ((addr & 0xff0000) >> 16); 1819 /* will resubit at end */ 1820 continue; 1821 } 1822 } 1823 /* final cleanup, totally done with this request */ 1824 1825 switch (XY_STATE(iorq->mode)) { 1826 case XY_SUB_NORM: 1827 bp = iorq->buf; 1828 if (errs) { 1829 bp->b_error = EIO; 1830 bp->b_flags |= B_ERROR; 1831 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1832 } else { 1833 bp->b_resid = 0; /* done */ 1834 } 1835 /* Sun3: map/unmap regardless of B_PHYS */ 1836 dvma_mapout(iorq->dbufbase, 1837 iorq->buf->b_bcount); 1838 (void)BUFQ_GET(&iorq->xy->xyq); 1839 disk_unbusy(&iorq->xy->sc_dk, 1840 (bp->b_bcount - bp->b_resid)); 1841 iorq->mode = XY_SUB_FREE; 1842 biodone(bp); 1843 break; 1844 case XY_SUB_WAIT: 1845 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1846 wakeup(iorq); 1847 break; 1848 case XY_SUB_POLL: 1849 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1850 break; 1851 } 1852 } 1853 1854 return (XY_ERR_AOK); 1855 } 1856 1857 /* 1858 * xyc_perror: print error. 1859 * - if still_trying is true: we got an error, retried and got a 1860 * different error. in that case lasterror is the old error, 1861 * and errno is the new one. 1862 * - if still_trying is not true, then if we ever had an error it 1863 * is in lasterror. also, if iorq->errno == 0, then we recovered 1864 * from that error (otherwise iorq->errno == iorq->lasterror). 1865 */ 1866 void 1867 xyc_perror(iorq, iopb, still_trying) 1868 struct xy_iorq *iorq; 1869 struct xy_iopb *iopb; 1870 int still_trying; 1871 1872 { 1873 1874 int error = iorq->lasterror; 1875 1876 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1877 : iorq->xyc->sc_dev.dv_xname); 1878 if (iorq->buf) 1879 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1880 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1881 printf("%s %d/%d/%d: ", 1882 (iopb->com == XYCMD_RD) ? "read" : "write", 1883 iopb->cyl, iopb->head, iopb->sect); 1884 printf("%s", xyc_e2str(error)); 1885 1886 if (still_trying) 1887 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1888 else 1889 if (iorq->errno == 0) 1890 printf(" [recovered in %d tries]", iorq->tries); 1891 1892 printf("\n"); 1893 } 1894 1895 /* 1896 * xyc_error: non-fatal error encountered... recover. 1897 * return AOK if resubmitted, return FAIL if this iopb is done 1898 */ 1899 int 1900 xyc_error(xycsc, iorq, iopb, comm) 1901 struct xyc_softc *xycsc; 1902 struct xy_iorq *iorq; 1903 struct xy_iopb *iopb; 1904 int comm; 1905 1906 { 1907 int errno = iorq->errno; 1908 int erract = xyc_entoact(errno); 1909 int oldmode, advance, i; 1910 1911 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1912 oldmode = iorq->mode; 1913 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1914 /* make xyc_start ignore us */ 1915 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1916 iorq->mode = oldmode; 1917 } 1918 /* check for read/write to a sector in bad144 table if bad: redirect 1919 * request to bad144 area */ 1920 1921 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1922 (iorq->mode & XY_MODE_B144) == 0) { 1923 advance = iorq->sectcnt - iopb->scnt; 1924 XYC_ADVANCE(iorq, advance); 1925 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1926 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1927 iorq->blockno % iorq->xy->nsect)) != -1) { 1928 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1929 * redirect */ 1930 iopb->errno = iopb->done = iopb->errs = 0; 1931 iopb->scnt = 1; 1932 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1933 /* second to last acyl */ 1934 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1935 * standard */ 1936 iopb->head = i / iorq->xy->nhead; 1937 iopb->sect = i % iorq->xy->nhead; 1938 /* will resubmit when we come out of remove_iorq */ 1939 return (XY_ERR_AOK); /* recovered! */ 1940 } 1941 } 1942 1943 /* 1944 * it isn't a bad144 sector, must be real error! see if we can retry 1945 * it? 1946 */ 1947 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1948 xyc_perror(iorq, iopb, 1); /* inform of error state 1949 * change */ 1950 iorq->lasterror = errno; 1951 1952 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1953 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1954 iorq->tries++; 1955 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1956 /* will resubmit at end of remove_iorq */ 1957 return (XY_ERR_AOK); /* recovered! */ 1958 } 1959 1960 /* failed to recover from this error */ 1961 return (XY_ERR_FAIL); 1962 } 1963 1964 /* 1965 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1966 */ 1967 void 1968 xyc_tick(arg) 1969 void *arg; 1970 1971 { 1972 struct xyc_softc *xycsc = arg; 1973 int lcv, s, reset = 0; 1974 1975 /* reduce ttl for each request if one goes to zero, reset xyc */ 1976 s = splbio(); 1977 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1978 if (xycsc->reqs[lcv].mode == 0 || 1979 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1980 continue; 1981 xycsc->reqs[lcv].ttl--; 1982 if (xycsc->reqs[lcv].ttl == 0) 1983 reset = 1; 1984 } 1985 if (reset) { 1986 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1987 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1988 } 1989 splx(s); 1990 1991 /* until next time */ 1992 1993 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1994 } 1995 1996 /* 1997 * xyc_ioctlcmd: this function provides a user level interface to the 1998 * controller via ioctl. this allows "format" programs to be written 1999 * in user code, and is also useful for some debugging. we return 2000 * an error code. called at user priority. 2001 * 2002 * XXX missing a few commands (see the 7053 driver for ideas) 2003 */ 2004 int 2005 xyc_ioctlcmd(xy, dev, xio) 2006 struct xy_softc *xy; 2007 dev_t dev; 2008 struct xd_iocmd *xio; 2009 2010 { 2011 int s, err, rqno; 2012 void * dvmabuf = NULL; 2013 struct xyc_softc *xycsc; 2014 2015 /* check sanity of requested command */ 2016 2017 switch (xio->cmd) { 2018 2019 case XYCMD_NOP: /* no op: everything should be zero */ 2020 if (xio->subfn || xio->dptr || xio->dlen || 2021 xio->block || xio->sectcnt) 2022 return (EINVAL); 2023 break; 2024 2025 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2026 case XYCMD_WR: 2027 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2028 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2029 return (EINVAL); 2030 break; 2031 2032 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2033 return (EINVAL); 2034 2035 break; 2036 2037 default: 2038 return (EINVAL);/* ??? */ 2039 } 2040 2041 /* create DVMA buffer for request if needed */ 2042 2043 if (xio->dlen) { 2044 dvmabuf = dvma_malloc(xio->dlen); 2045 if (xio->cmd == XYCMD_WR) { 2046 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2047 if (err) { 2048 dvma_free(dvmabuf, xio->dlen); 2049 return (err); 2050 } 2051 } 2052 } 2053 /* do it! */ 2054 2055 err = 0; 2056 xycsc = xy->parent; 2057 s = splbio(); 2058 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2059 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2060 if (rqno == XY_ERR_FAIL) { 2061 err = EIO; 2062 goto done; 2063 } 2064 xio->errno = xycsc->ciorq->errno; 2065 xio->tries = xycsc->ciorq->tries; 2066 XYC_DONE(xycsc, err); 2067 2068 if (xio->cmd == XYCMD_RD) 2069 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2070 2071 done: 2072 splx(s); 2073 if (dvmabuf) 2074 dvma_free(dvmabuf, xio->dlen); 2075 return (err); 2076 } 2077 2078 /* 2079 * xyc_e2str: convert error code number into an error string 2080 */ 2081 char * 2082 xyc_e2str(no) 2083 int no; 2084 { 2085 switch (no) { 2086 case XY_ERR_FAIL: 2087 return ("Software fatal error"); 2088 case XY_ERR_DERR: 2089 return ("DOUBLE ERROR"); 2090 case XY_ERR_AOK: 2091 return ("Successful completion"); 2092 case XY_ERR_IPEN: 2093 return("Interrupt pending"); 2094 case XY_ERR_BCFL: 2095 return("Busy conflict"); 2096 case XY_ERR_TIMO: 2097 return("Operation timeout"); 2098 case XY_ERR_NHDR: 2099 return("Header not found"); 2100 case XY_ERR_HARD: 2101 return("Hard ECC error"); 2102 case XY_ERR_ICYL: 2103 return("Illegal cylinder address"); 2104 case XY_ERR_ISEC: 2105 return("Illegal sector address"); 2106 case XY_ERR_SMAL: 2107 return("Last sector too small"); 2108 case XY_ERR_SACK: 2109 return("Slave ACK error (non-existent memory)"); 2110 case XY_ERR_CHER: 2111 return("Cylinder and head/header error"); 2112 case XY_ERR_SRTR: 2113 return("Auto-seek retry successful"); 2114 case XY_ERR_WPRO: 2115 return("Write-protect error"); 2116 case XY_ERR_UIMP: 2117 return("Unimplemented command"); 2118 case XY_ERR_DNRY: 2119 return("Drive not ready"); 2120 case XY_ERR_SZER: 2121 return("Sector count zero"); 2122 case XY_ERR_DFLT: 2123 return("Drive faulted"); 2124 case XY_ERR_ISSZ: 2125 return("Illegal sector size"); 2126 case XY_ERR_SLTA: 2127 return("Self test A"); 2128 case XY_ERR_SLTB: 2129 return("Self test B"); 2130 case XY_ERR_SLTC: 2131 return("Self test C"); 2132 case XY_ERR_SOFT: 2133 return("Soft ECC error"); 2134 case XY_ERR_SFOK: 2135 return("Soft ECC error recovered"); 2136 case XY_ERR_IHED: 2137 return("Illegal head"); 2138 case XY_ERR_DSEQ: 2139 return("Disk sequencer error"); 2140 case XY_ERR_SEEK: 2141 return("Seek error"); 2142 default: 2143 return ("Unknown error"); 2144 } 2145 } 2146 2147 int 2148 xyc_entoact(errno) 2149 2150 int errno; 2151 2152 { 2153 switch (errno) { 2154 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2155 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2156 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2157 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2158 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2159 2160 return(XY_ERA_PROG); /* program error ! */ 2161 2162 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2163 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2164 case XY_ERR_SOFT: 2165 2166 return(XY_ERA_HARD); /* hard error, retry */ 2167 2168 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2169 2170 return(XY_ERA_RSET); /* hard error reset */ 2171 2172 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2173 2174 return(XY_ERA_SOFT); /* an FYI error */ 2175 2176 case XY_ERR_WPRO: 2177 2178 return(XY_ERA_WPRO); /* write protect */ 2179 } 2180 2181 return(XY_ERA_PROG); /* ??? */ 2182 } 2183
Indexes created Mon Sep 29 21:09:56 GMT 2025