xy.c revision 1.37
1 /* $NetBSD: xy.c,v 1.37 2002/09/06 13:18:43 gehenna 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 struct cfattach xyc_ca = { 200 sizeof(struct xyc_softc), xycmatch, xycattach 201 }; 202 203 struct cfattach xy_ca = { 204 sizeof(struct xy_softc), xymatch, xyattach 205 }; 206 207 extern struct cfdriver xy_cd; 208 209 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 210 int driveno; /* unit number */ 211 }; 212 213 dev_type_open(xyopen); 214 dev_type_close(xyclose); 215 dev_type_read(xyread); 216 dev_type_write(xywrite); 217 dev_type_ioctl(xyioctl); 218 dev_type_strategy(xystrategy); 219 dev_type_dump(xydump); 220 dev_type_size(xysize); 221 222 const struct bdevsw xy_bdevsw = { 223 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 224 }; 225 226 const struct cdevsw xy_cdevsw = { 227 xyopen, xyclose, xyread, xywrite, xyioctl, 228 nostop, notty, nopoll, nommap, D_DISK 229 }; 230 231 /* 232 * dkdriver 233 */ 234 235 struct dkdriver xydkdriver = { xystrategy }; 236 237 /* 238 * start: disk label fix code (XXX) 239 */ 240 241 static void *xy_labeldata; 242 243 static void 244 xydummystrat(bp) 245 struct buf *bp; 246 { 247 if (bp->b_bcount != XYFM_BPS) 248 panic("xydummystrat"); 249 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 250 bp->b_flags |= B_DONE; 251 bp->b_flags &= ~B_BUSY; 252 } 253 254 int 255 xygetdisklabel(xy, b) 256 struct xy_softc *xy; 257 void *b; 258 { 259 char *err; 260 struct sun_disklabel *sdl; 261 262 /* We already have the label data in `b'; setup for dummy strategy */ 263 xy_labeldata = b; 264 265 /* Required parameter for readdisklabel() */ 266 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 267 268 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 269 xydummystrat, 270 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 271 if (err) { 272 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 273 return(XY_ERR_FAIL); 274 } 275 276 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 277 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 278 if (sdl->sl_magic == SUN_DKMAGIC) 279 xy->pcyl = sdl->sl_pcyl; 280 else { 281 printf("%s: WARNING: no `pcyl' in disk label.\n", 282 xy->sc_dev.dv_xname); 283 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 284 xy->sc_dk.dk_label->d_acylinders; 285 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 286 xy->sc_dev.dv_xname, xy->pcyl); 287 } 288 289 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 290 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 291 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 292 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 293 xy->sectpercyl = xy->nhead * xy->nsect; 294 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 295 * sun->bsd */ 296 return(XY_ERR_AOK); 297 } 298 299 /* 300 * end: disk label fix code (XXX) 301 */ 302 303 /* 304 * a u t o c o n f i g f u n c t i o n s 305 */ 306 307 /* 308 * xycmatch: determine if xyc is present or not. we do a 309 * soft reset to detect the xyc. 310 */ 311 static int 312 xycmatch(parent, cf, aux) 313 struct device *parent; 314 struct cfdata *cf; 315 void *aux; 316 { 317 struct confargs *ca = aux; 318 319 /* No default VME address. */ 320 if (ca->ca_paddr == -1) 321 return (0); 322 323 /* Make sure something is there... */ 324 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 325 return (0); 326 327 /* Default interrupt priority. */ 328 if (ca->ca_intpri == -1) 329 ca->ca_intpri = 2; 330 331 return (1); 332 } 333 334 /* 335 * xycattach: attach controller 336 */ 337 static void 338 xycattach(parent, self, aux) 339 struct device *parent, *self; 340 void *aux; 341 { 342 struct xyc_softc *xyc = (void *) self; 343 struct confargs *ca = aux; 344 struct xyc_attach_args xa; 345 int lcv, err, res, pbsz; 346 void *tmp, *tmp2; 347 u_long ultmp; 348 349 /* get addressing and intr level stuff from autoconfig and load it 350 * into our xyc_softc. */ 351 352 xyc->xyc = (struct xyc *) 353 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 354 xyc->bustype = ca->ca_bustype; 355 xyc->ipl = ca->ca_intpri; 356 xyc->vector = ca->ca_intvec; 357 xyc->no_ols = 0; /* XXX should be from config */ 358 359 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 360 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 361 362 /* 363 * allocate and zero buffers 364 * check boundaries of the KVA's ... all IOPBs must reside in 365 * the same 64K region. 366 */ 367 368 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 369 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 370 ultmp = (u_long) tmp; 371 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 372 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 373 dvma_free(tmp2, pbsz); 374 ultmp = (u_long) tmp; 375 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 376 printf("%s: can't alloc IOPB mem in 64K\n", 377 xyc->sc_dev.dv_xname); 378 return; 379 } 380 } 381 memset(tmp, 0, pbsz); 382 xyc->iopbase = tmp; 383 xyc->dvmaiopb = (struct xy_iopb *) 384 dvma_kvtopa(xyc->iopbase, xyc->bustype); 385 xyc->reqs = (struct xy_iorq *) 386 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 387 if (xyc->reqs == NULL) 388 panic("xyc malloc"); 389 memset(xyc->reqs, 0, XYC_MAXIOPB * sizeof(struct xy_iorq)); 390 391 /* 392 * init iorq to iopb pointers, and non-zero fields in the 393 * iopb which never change. 394 */ 395 396 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 397 xyc->xy_chain[lcv] = NULL; 398 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 399 xyc->iopbase[lcv].asr = 1; /* always the same */ 400 xyc->iopbase[lcv].eef = 1; /* always the same */ 401 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 402 xyc->iopbase[lcv].aud = 1; /* always the same */ 403 xyc->iopbase[lcv].relo = 1; /* always the same */ 404 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 405 } 406 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 407 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 408 xyc->xy_hand = 0; 409 410 /* read controller parameters and insure we have a 450/451 */ 411 412 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 413 res = xyc->ciopb->ctyp; 414 XYC_DONE(xyc, err); 415 if (res != XYCT_450) { 416 if (err) 417 printf(": %s: ", xyc_e2str(err)); 418 printf(": doesn't identify as a 450/451\n"); 419 return; 420 } 421 printf(": Xylogics 450/451"); 422 if (xyc->no_ols) 423 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 424 printf("\n"); 425 if (err) { 426 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 427 xyc_e2str(err)); 428 return; 429 } 430 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 431 printf("%s: 24 bit addressing turned off\n", 432 xyc->sc_dev.dv_xname); 433 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 434 printf("to enable 24 bit mode and this driver\n"); 435 return; 436 } 437 438 /* link in interrupt with higher level software */ 439 isr_add_vectored(xycintr, (void *)xyc, 440 ca->ca_intpri, ca->ca_intvec); 441 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 442 xyc->sc_dev.dv_xname, "intr"); 443 444 callout_init(&xyc->sc_tick_ch); 445 446 /* now we must look for disks using autoconfig */ 447 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 448 (void) config_found(self, (void *) &xa, xyc_print); 449 450 /* start the watchdog clock */ 451 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 452 } 453 454 static int 455 xyc_print(aux, name) 456 void *aux; 457 const char *name; 458 { 459 struct xyc_attach_args *xa = aux; 460 461 if (name != NULL) 462 printf("%s: ", name); 463 464 if (xa->driveno != -1) 465 printf(" drive %d", xa->driveno); 466 467 return UNCONF; 468 } 469 470 /* 471 * xymatch: probe for disk. 472 * 473 * note: we almost always say disk is present. this allows us to 474 * spin up and configure a disk after the system is booted (we can 475 * call xyattach!). Also, wire down the relationship between the 476 * xy* and xyc* devices, to simplify boot device identification. 477 */ 478 static int 479 xymatch(parent, cf, aux) 480 struct device *parent; 481 struct cfdata *cf; 482 void *aux; 483 { 484 struct xyc_attach_args *xa = aux; 485 int xy_unit; 486 487 /* Match only on the "wired-down" controller+disk. */ 488 xy_unit = parent->dv_unit * 2 + xa->driveno; 489 if (cf->cf_unit != xy_unit) 490 return (0); 491 492 return (1); 493 } 494 495 /* 496 * xyattach: attach a disk. 497 */ 498 static void 499 xyattach(parent, self, aux) 500 struct device *parent, *self; 501 void *aux; 502 { 503 struct xy_softc *xy = (void *) self; 504 struct xyc_softc *xyc = (void *) parent; 505 struct xyc_attach_args *xa = aux; 506 507 printf("\n"); 508 509 /* 510 * Always re-initialize the disk structure. We want statistics 511 * to start with a clean slate. 512 */ 513 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 514 xy->sc_dk.dk_driver = &xydkdriver; 515 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 516 517 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 518 xy->flags = 0; 519 xy->parent = xyc; 520 521 /* init queue of waiting bufs */ 522 bufq_alloc(&xy->xyq, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 523 xy->xyrq = &xyc->reqs[xa->driveno]; 524 525 xy->xy_drive = xa->driveno; 526 xyc->sc_drives[xa->driveno] = xy; 527 528 /* Do init work common to attach and open. */ 529 xy_init(xy); 530 } 531 532 /* 533 * end of autoconfig functions 534 */ 535 536 /* 537 * Initialize a disk. This can be called from both autoconf and 538 * also from xyopen/xystrategy. 539 */ 540 static void 541 xy_init(xy) 542 struct xy_softc *xy; 543 { 544 struct xyc_softc *xyc; 545 struct dkbad *dkb; 546 void *dvmabuf; 547 int err, spt, mb, blk, lcv, fullmode, newstate; 548 549 xyc = xy->parent; 550 xy->state = XY_DRIVE_ATTACHING; 551 newstate = XY_DRIVE_UNKNOWN; 552 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 553 dvmabuf = dvma_malloc(XYFM_BPS); 554 555 /* first try and reset the drive */ 556 557 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 558 XYC_DONE(xyc, err); 559 if (err == XY_ERR_DNRY) { 560 printf("%s: drive %d: off-line\n", 561 xy->sc_dev.dv_xname, xy->xy_drive); 562 goto done; 563 } 564 if (err) { 565 printf("%s: ERROR 0x%02x (%s)\n", 566 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 567 goto done; 568 } 569 printf("%s: drive %d ready", 570 xy->sc_dev.dv_xname, xy->xy_drive); 571 572 /* 573 * now set drive parameters (to semi-bogus values) so we can read the 574 * disk label. 575 */ 576 xy->pcyl = xy->ncyl = 1; 577 xy->acyl = 0; 578 xy->nhead = 1; 579 xy->nsect = 1; 580 xy->sectpercyl = 1; 581 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 582 xy->dkb.bt_bad[lcv].bt_cyl = 583 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 584 585 /* read disk label */ 586 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 587 xy->drive_type++) { 588 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 589 dvmabuf, fullmode); 590 XYC_DONE(xyc, err); 591 if (err == XY_ERR_AOK) break; 592 } 593 594 if (err != XY_ERR_AOK) { 595 printf("%s: reading disk label failed: %s\n", 596 xy->sc_dev.dv_xname, xyc_e2str(err)); 597 goto done; 598 } 599 printf("%s: drive type %d\n", 600 xy->sc_dev.dv_xname, xy->drive_type); 601 602 newstate = XY_DRIVE_NOLABEL; 603 604 xy->hw_spt = spt = 0; /* XXX needed ? */ 605 /* Attach the disk: must be before getdisklabel to malloc label */ 606 disk_attach(&xy->sc_dk); 607 608 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 609 goto done; 610 611 /* inform the user of what is up */ 612 printf("%s: <%s>, pcyl %d\n", 613 xy->sc_dev.dv_xname, 614 (char *)dvmabuf, xy->pcyl); 615 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 616 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 617 xy->sc_dev.dv_xname, mb, 618 xy->ncyl, xy->nhead, xy->nsect); 619 620 /* 621 * 450/451 stupidity: the drive type is encoded into the format 622 * of the disk. the drive type in the IOPB must match the drive 623 * type in the format, or you will not be able to do I/O to the 624 * disk (you get header not found errors). if you have two drives 625 * of different sizes that have the same drive type in their 626 * formatting then you are out of luck. 627 * 628 * this problem was corrected in the 753/7053. 629 */ 630 631 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 632 struct xy_softc *oxy; 633 634 oxy = xyc->sc_drives[lcv]; 635 if (oxy == NULL || oxy == xy) continue; 636 if (oxy->drive_type != xy->drive_type) continue; 637 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 638 xy->nhead != oxy->nhead) { 639 printf("%s: %s and %s must be the same size!\n", 640 xyc->sc_dev.dv_xname, 641 xy ->sc_dev.dv_xname, 642 oxy->sc_dev.dv_xname); 643 panic("xy drive size mismatch"); 644 } 645 } 646 647 648 /* now set the real drive parameters! */ 649 blk = (xy->nsect - 1) + 650 ((xy->nhead - 1) * xy->nsect) + 651 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 652 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 653 XYC_DONE(xyc, err); 654 if (err) { 655 printf("%s: write drive size failed: %s\n", 656 xy->sc_dev.dv_xname, xyc_e2str(err)); 657 goto done; 658 } 659 newstate = XY_DRIVE_ONLINE; 660 661 /* 662 * read bad144 table. this table resides on the first sector of the 663 * last track of the disk (i.e. second cyl of "acyl" area). 664 */ 665 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 666 /* last cyl */ 667 (xy->nhead - 1) * xy->nsect; /* last head */ 668 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 669 dvmabuf, fullmode); 670 XYC_DONE(xyc, err); 671 if (err) { 672 printf("%s: reading bad144 failed: %s\n", 673 xy->sc_dev.dv_xname, xyc_e2str(err)); 674 goto done; 675 } 676 677 /* check dkbad for sanity */ 678 dkb = (struct dkbad *) dvmabuf; 679 for (lcv = 0; lcv < 126; lcv++) { 680 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 681 dkb->bt_bad[lcv].bt_cyl == 0) && 682 dkb->bt_bad[lcv].bt_trksec == 0xffff) 683 continue; /* blank */ 684 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 685 break; 686 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 687 break; 688 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 689 break; 690 } 691 if (lcv != 126) { 692 printf("%s: warning: invalid bad144 sector!\n", 693 xy->sc_dev.dv_xname); 694 } else { 695 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 696 } 697 698 done: 699 xy->state = newstate; 700 dvma_free(dvmabuf, XYFM_BPS); 701 } 702 703 /* 704 * { b , c } d e v s w f u n c t i o n s 705 */ 706 707 /* 708 * xyclose: close device 709 */ 710 int 711 xyclose(dev, flag, fmt, p) 712 dev_t dev; 713 int flag, fmt; 714 struct proc *p; 715 { 716 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 717 int part = DISKPART(dev); 718 719 /* clear mask bits */ 720 721 switch (fmt) { 722 case S_IFCHR: 723 xy->sc_dk.dk_copenmask &= ~(1 << part); 724 break; 725 case S_IFBLK: 726 xy->sc_dk.dk_bopenmask &= ~(1 << part); 727 break; 728 } 729 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 730 731 return 0; 732 } 733 734 /* 735 * xydump: crash dump system 736 */ 737 int 738 xydump(dev, blkno, va, sz) 739 dev_t dev; 740 daddr_t blkno; 741 caddr_t va; 742 size_t sz; 743 { 744 int unit, part; 745 struct xy_softc *xy; 746 747 unit = DISKUNIT(dev); 748 if (unit >= xy_cd.cd_ndevs) 749 return ENXIO; 750 part = DISKPART(dev); 751 752 xy = xy_cd.cd_devs[unit]; 753 754 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 755 'a' + part); 756 757 return ENXIO; 758 759 /* outline: globals: "dumplo" == sector number of partition to start 760 * dump at (convert to physical sector with partition table) 761 * "dumpsize" == size of dump in clicks "physmem" == size of physical 762 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 763 * physmem) 764 * 765 * dump a copy of physical memory to the dump device starting at sector 766 * "dumplo" in the swap partition (make sure > 0). map in pages as 767 * we go. use polled I/O. 768 * 769 * XXX how to handle NON_CONTIG? 770 */ 771 } 772 773 /* 774 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 775 */ 776 int 777 xyioctl(dev, command, addr, flag, p) 778 dev_t dev; 779 u_long command; 780 caddr_t addr; 781 int flag; 782 struct proc *p; 783 784 { 785 struct xy_softc *xy; 786 struct xd_iocmd *xio; 787 int error, s, unit; 788 789 unit = DISKUNIT(dev); 790 791 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 792 return (ENXIO); 793 794 /* switch on ioctl type */ 795 796 switch (command) { 797 case DIOCSBAD: /* set bad144 info */ 798 if ((flag & FWRITE) == 0) 799 return EBADF; 800 s = splbio(); 801 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 802 splx(s); 803 return 0; 804 805 case DIOCGDINFO: /* get disk label */ 806 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 807 return 0; 808 809 case DIOCGPART: /* get partition info */ 810 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 811 ((struct partinfo *) addr)->part = 812 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 813 return 0; 814 815 case DIOCSDINFO: /* set disk label */ 816 if ((flag & FWRITE) == 0) 817 return EBADF; 818 error = setdisklabel(xy->sc_dk.dk_label, 819 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 820 xy->sc_dk.dk_cpulabel); 821 if (error == 0) { 822 if (xy->state == XY_DRIVE_NOLABEL) 823 xy->state = XY_DRIVE_ONLINE; 824 } 825 return error; 826 827 case DIOCWLABEL: /* change write status of disk label */ 828 if ((flag & FWRITE) == 0) 829 return EBADF; 830 if (*(int *) addr) 831 xy->flags |= XY_WLABEL; 832 else 833 xy->flags &= ~XY_WLABEL; 834 return 0; 835 836 case DIOCWDINFO: /* write disk label */ 837 if ((flag & FWRITE) == 0) 838 return EBADF; 839 error = setdisklabel(xy->sc_dk.dk_label, 840 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 841 xy->sc_dk.dk_cpulabel); 842 if (error == 0) { 843 if (xy->state == XY_DRIVE_NOLABEL) 844 xy->state = XY_DRIVE_ONLINE; 845 846 /* Simulate opening partition 0 so write succeeds. */ 847 xy->sc_dk.dk_openmask |= (1 << 0); 848 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 849 xystrategy, xy->sc_dk.dk_label, 850 xy->sc_dk.dk_cpulabel); 851 xy->sc_dk.dk_openmask = 852 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 853 } 854 return error; 855 856 case DIOSXDCMD: 857 xio = (struct xd_iocmd *) addr; 858 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 859 return (error); 860 return (xyc_ioctlcmd(xy, dev, xio)); 861 862 default: 863 return ENOTTY; 864 } 865 } 866 867 /* 868 * xyopen: open drive 869 */ 870 int 871 xyopen(dev, flag, fmt, p) 872 dev_t dev; 873 int flag, fmt; 874 struct proc *p; 875 { 876 int err, unit, part, s; 877 struct xy_softc *xy; 878 879 /* first, could it be a valid target? */ 880 unit = DISKUNIT(dev); 881 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 882 return (ENXIO); 883 part = DISKPART(dev); 884 err = 0; 885 886 /* 887 * If some other processing is doing init, sleep. 888 */ 889 s = splbio(); 890 while (xy->state == XY_DRIVE_ATTACHING) { 891 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 892 err = EINTR; 893 goto done; 894 } 895 } 896 /* Do we need to init the drive? */ 897 if (xy->state == XY_DRIVE_UNKNOWN) { 898 xy_init(xy); 899 wakeup(&xy->state); 900 } 901 /* Was the init successful? */ 902 if (xy->state == XY_DRIVE_UNKNOWN) { 903 err = EIO; 904 goto done; 905 } 906 907 /* check for partition */ 908 if (part != RAW_PART && 909 (part >= xy->sc_dk.dk_label->d_npartitions || 910 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 911 err = ENXIO; 912 goto done; 913 } 914 915 /* set open masks */ 916 switch (fmt) { 917 case S_IFCHR: 918 xy->sc_dk.dk_copenmask |= (1 << part); 919 break; 920 case S_IFBLK: 921 xy->sc_dk.dk_bopenmask |= (1 << part); 922 break; 923 } 924 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 925 926 done: 927 splx(s); 928 return (err); 929 } 930 931 int 932 xyread(dev, uio, flags) 933 dev_t dev; 934 struct uio *uio; 935 int flags; 936 { 937 938 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 939 } 940 941 int 942 xywrite(dev, uio, flags) 943 dev_t dev; 944 struct uio *uio; 945 int flags; 946 { 947 948 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 949 } 950 951 952 /* 953 * xysize: return size of a partition for a dump 954 */ 955 956 int 957 xysize(dev) 958 dev_t dev; 959 960 { 961 struct xy_softc *xysc; 962 int unit, part, size, omask; 963 964 /* valid unit? */ 965 unit = DISKUNIT(dev); 966 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 967 return (-1); 968 969 part = DISKPART(dev); 970 omask = xysc->sc_dk.dk_openmask & (1 << part); 971 972 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 973 return (-1); 974 975 /* do it */ 976 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 977 size = -1; /* only give valid size for swap partitions */ 978 else 979 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 980 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 981 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 982 return (-1); 983 return (size); 984 } 985 986 /* 987 * xystrategy: buffering system interface to xy. 988 */ 989 void 990 xystrategy(bp) 991 struct buf *bp; 992 993 { 994 struct xy_softc *xy; 995 int s, unit; 996 struct disklabel *lp; 997 daddr_t blkno; 998 999 unit = DISKUNIT(bp->b_dev); 1000 1001 /* check for live device */ 1002 1003 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1004 bp->b_blkno < 0 || 1005 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1006 bp->b_error = EINVAL; 1007 goto bad; 1008 } 1009 1010 /* There should always be an open first. */ 1011 if (xy->state == XY_DRIVE_UNKNOWN) { 1012 bp->b_error = EIO; 1013 goto bad; 1014 } 1015 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1016 /* no I/O to unlabeled disks, unless raw partition */ 1017 bp->b_error = EIO; 1018 goto bad; 1019 } 1020 /* short circuit zero length request */ 1021 1022 if (bp->b_bcount == 0) 1023 goto done; 1024 1025 /* check bounds with label (disksubr.c). Determine the size of the 1026 * transfer, and make sure it is within the boundaries of the 1027 * partition. Adjust transfer if needed, and signal errors or early 1028 * completion. */ 1029 1030 lp = xy->sc_dk.dk_label; 1031 1032 if (bounds_check_with_label(bp, lp, 1033 (xy->flags & XY_WLABEL) != 0) <= 0) 1034 goto done; 1035 1036 /* 1037 * Now convert the block number to absolute and put it in 1038 * terms of the device's logical block size. 1039 */ 1040 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1041 if (DISKPART(bp->b_dev) != RAW_PART) 1042 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1043 1044 bp->b_rawblkno = blkno; 1045 1046 /* 1047 * now we know we have a valid buf structure that we need to do I/O 1048 * on. 1049 */ 1050 1051 s = splbio(); /* protect the queues */ 1052 1053 BUFQ_PUT(&xy->xyq, bp); /* XXX disksort_cylinder */ 1054 1055 /* start 'em up */ 1056 1057 xyc_start(xy->parent, NULL); 1058 1059 /* done! */ 1060 1061 splx(s); 1062 return; 1063 1064 bad: /* tells upper layers we have an error */ 1065 bp->b_flags |= B_ERROR; 1066 done: /* tells upper layers we are done with this 1067 * buf */ 1068 bp->b_resid = bp->b_bcount; 1069 biodone(bp); 1070 } 1071 /* 1072 * end of {b,c}devsw functions 1073 */ 1074 1075 /* 1076 * i n t e r r u p t f u n c t i o n 1077 * 1078 * xycintr: hardware interrupt. 1079 */ 1080 int 1081 xycintr(v) 1082 void *v; 1083 1084 { 1085 struct xyc_softc *xycsc = v; 1086 1087 /* kick the event counter */ 1088 xycsc->sc_intrcnt.ev_count++; 1089 1090 /* remove as many done IOPBs as possible */ 1091 xyc_remove_iorq(xycsc); 1092 1093 /* start any iorq's already waiting */ 1094 xyc_start(xycsc, NULL); 1095 1096 return (1); 1097 } 1098 /* 1099 * end of interrupt function 1100 */ 1101 1102 /* 1103 * i n t e r n a l f u n c t i o n s 1104 */ 1105 1106 /* 1107 * xyc_rqinit: fill out the fields of an I/O request 1108 */ 1109 1110 inline void 1111 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1112 struct xy_iorq *rq; 1113 struct xyc_softc *xyc; 1114 struct xy_softc *xy; 1115 int md; 1116 u_long blk; 1117 int cnt; 1118 caddr_t db; 1119 struct buf *bp; 1120 { 1121 rq->xyc = xyc; 1122 rq->xy = xy; 1123 rq->ttl = XYC_MAXTTL + 10; 1124 rq->mode = md; 1125 rq->tries = rq->errno = rq->lasterror = 0; 1126 rq->blockno = blk; 1127 rq->sectcnt = cnt; 1128 rq->dbuf = rq->dbufbase = db; 1129 rq->buf = bp; 1130 } 1131 1132 /* 1133 * xyc_rqtopb: load up an IOPB based on an iorq 1134 */ 1135 1136 void 1137 xyc_rqtopb(iorq, iopb, cmd, subfun) 1138 struct xy_iorq *iorq; 1139 struct xy_iopb *iopb; 1140 int cmd, subfun; 1141 1142 { 1143 u_long block, dp; 1144 1145 /* normal IOPB case, standard stuff */ 1146 1147 /* chain bit handled later */ 1148 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1149 iopb->com = cmd; 1150 iopb->errno = 0; 1151 iopb->errs = 0; 1152 iopb->done = 0; 1153 if (iorq->xy) { 1154 iopb->unit = iorq->xy->xy_drive; 1155 iopb->dt = iorq->xy->drive_type; 1156 } else { 1157 iopb->unit = 0; 1158 iopb->dt = 0; 1159 } 1160 block = iorq->blockno; 1161 if (iorq->xy == NULL || block == 0) { 1162 iopb->sect = iopb->head = iopb->cyl = 0; 1163 } else { 1164 iopb->sect = block % iorq->xy->nsect; 1165 block = block / iorq->xy->nsect; 1166 iopb->head = block % iorq->xy->nhead; 1167 block = block / iorq->xy->nhead; 1168 iopb->cyl = block; 1169 } 1170 iopb->scnt = iorq->sectcnt; 1171 if (iorq->dbuf == NULL) { 1172 iopb->dataa = 0; 1173 iopb->datar = 0; 1174 } else { 1175 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1176 iopb->dataa = (dp & 0xffff); 1177 iopb->datar = ((dp & 0xff0000) >> 16); 1178 } 1179 iopb->subfn = subfun; 1180 } 1181 1182 1183 /* 1184 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1185 */ 1186 1187 int 1188 xyc_unbusy(xyc, del) 1189 1190 struct xyc *xyc; 1191 int del; 1192 1193 { 1194 while (del-- > 0) { 1195 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1196 break; 1197 DELAY(1); 1198 } 1199 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1200 } 1201 1202 /* 1203 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1204 * note that NORM requests are handled separately. 1205 */ 1206 int 1207 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1208 struct xyc_softc *xycsc; 1209 int cmd, subfn, unit, block, scnt; 1210 char *dptr; 1211 int fullmode; 1212 { 1213 struct xy_iorq *iorq = xycsc->ciorq; 1214 struct xy_iopb *iopb = xycsc->ciopb; 1215 int submode = XY_STATE(fullmode); 1216 1217 /* 1218 * is someone else using the control iopq wait for it if we can 1219 */ 1220 start: 1221 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1222 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1223 return(XY_ERR_FAIL); 1224 goto start; 1225 } 1226 1227 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1228 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1229 iorq->mode = XY_SUB_FREE; 1230 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1231 } 1232 1233 /* init iorq/iopb */ 1234 1235 xyc_rqinit(iorq, xycsc, 1236 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1237 fullmode, block, scnt, dptr, NULL); 1238 1239 /* load IOPB from iorq */ 1240 1241 xyc_rqtopb(iorq, iopb, cmd, subfn); 1242 1243 /* submit it for processing */ 1244 1245 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1246 1247 return(XY_ERR_AOK); 1248 } 1249 1250 /* 1251 * xyc_startbuf 1252 * start a buffer for running 1253 */ 1254 1255 int 1256 xyc_startbuf(xycsc, xysc, bp) 1257 struct xyc_softc *xycsc; 1258 struct xy_softc *xysc; 1259 struct buf *bp; 1260 1261 { 1262 int partno; 1263 struct xy_iorq *iorq; 1264 struct xy_iopb *iopb; 1265 u_long block; 1266 caddr_t dbuf; 1267 1268 iorq = xysc->xyrq; 1269 iopb = iorq->iopb; 1270 1271 /* get buf */ 1272 1273 if (bp == NULL) 1274 panic("xyc_startbuf null buf"); 1275 1276 partno = DISKPART(bp->b_dev); 1277 #ifdef XYC_DEBUG 1278 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1279 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1280 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1281 bp->b_bcount, bp->b_data); 1282 #endif 1283 1284 /* 1285 * load request. 1286 * 1287 * also, note that there are two kinds of buf structures, those with 1288 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1289 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1290 * buffer which has already been mapped into DVMA space. (Not on sun3) 1291 * However, if B_PHYS is not set, then the buffer is a normal system 1292 * buffer which does *not* live in DVMA space. In that case we call 1293 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1294 * 1295 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1296 * as mapped into DVMA space, where as the bp->b_data points to its 1297 * non-DVMA mapping. 1298 * 1299 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1300 * into dvma space, only that it was remapped into the kernel. 1301 * We ALWAYS have to remap the kernel buf into DVMA space. 1302 * (It is done inexpensively, using whole segments!) 1303 */ 1304 1305 block = bp->b_rawblkno; 1306 1307 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1308 if (dbuf == NULL) { /* out of DVMA space */ 1309 printf("%s: warning: out of DVMA space\n", 1310 xycsc->sc_dev.dv_xname); 1311 return (XY_ERR_FAIL); /* XXX: need some sort of 1312 * call-back scheme here? */ 1313 } 1314 1315 /* init iorq and load iopb from it */ 1316 1317 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1318 bp->b_bcount / XYFM_BPS, dbuf, bp); 1319 1320 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1321 1322 /* Instrumentation. */ 1323 disk_busy(&xysc->sc_dk); 1324 1325 return (XY_ERR_AOK); 1326 } 1327 1328 1329 /* 1330 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1331 * if ok. if it fail returns an error code. type is XY_SUB_*. 1332 * 1333 * note: caller frees iorq in all cases except NORM 1334 * 1335 * return value: 1336 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1337 * WAIT: XY_AOK (success), <error-code> (failed) 1338 * POLL: <same as WAIT> 1339 * NOQ : <same as NORM> 1340 * 1341 * there are three sources for i/o requests: 1342 * [1] xystrategy: normal block I/O, using "struct buf" system. 1343 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1344 * [3] open/ioctl: these are I/O requests done in the context of a process, 1345 * and the process should block until they are done. 1346 * 1347 * software state is stored in the iorq structure. each iorq has an 1348 * iopb structure. the hardware understands the iopb structure. 1349 * every command must go through an iopb. a 450 handles one iopb at a 1350 * time, where as a 451 can take them in chains. [the 450 claims it 1351 * can handle chains, but is appears to be buggy...] iopb are allocated 1352 * in DVMA space at boot up time. each disk gets one iopb, and the 1353 * controller gets one (for POLL and WAIT commands). what happens if 1354 * the iopb is busy? for i/o type [1], the buffers are queued at the 1355 * "buff" layer and * picked up later by the interrupt routine. for case 1356 * [2] we can only be blocked if there is a WAIT type I/O request being 1357 * run. since this can only happen when we are crashing, we wait a sec 1358 * and then steal the IOPB. for case [3] the process can sleep 1359 * on the iorq free list until some iopbs are avaliable. 1360 */ 1361 1362 1363 int 1364 xyc_submit_iorq(xycsc, iorq, type) 1365 struct xyc_softc *xycsc; 1366 struct xy_iorq *iorq; 1367 int type; 1368 1369 { 1370 struct xy_iopb *iopb; 1371 u_long iopbaddr; 1372 1373 #ifdef XYC_DEBUG 1374 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1375 xycsc->sc_dev.dv_xname, iorq, type); 1376 #endif 1377 1378 /* first check and see if controller is busy */ 1379 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1380 #ifdef XYC_DEBUG 1381 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1382 #endif 1383 if (type == XY_SUB_NOQ) 1384 return (XY_ERR_FAIL); /* failed */ 1385 switch (type) { 1386 case XY_SUB_NORM: 1387 return XY_ERR_AOK; /* success */ 1388 case XY_SUB_WAIT: 1389 while (iorq->iopb->done == 0) { 1390 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1391 } 1392 return (iorq->errno); 1393 case XY_SUB_POLL: /* steal controller */ 1394 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1395 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1396 panic("xyc_submit_iorq: stuck xyc"); 1397 printf("%s: stole controller\n", 1398 xycsc->sc_dev.dv_xname); 1399 break; 1400 default: 1401 panic("xyc_submit_iorq adding"); 1402 } 1403 } 1404 1405 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1406 if (iopb == NULL) { /* nothing doing? */ 1407 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1408 return(XY_ERR_AOK); 1409 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1410 } 1411 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1412 1413 XYC_GO(xycsc->xyc, iopbaddr); 1414 1415 /* command now running, wrap it up */ 1416 switch (type) { 1417 case XY_SUB_NORM: 1418 case XY_SUB_NOQ: 1419 return (XY_ERR_AOK); /* success */ 1420 case XY_SUB_WAIT: 1421 while (iorq->iopb->done == 0) { 1422 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1423 } 1424 return (iorq->errno); 1425 case XY_SUB_POLL: 1426 return (xyc_piodriver(xycsc, iorq)); 1427 default: 1428 panic("xyc_submit_iorq wrap up"); 1429 } 1430 panic("xyc_submit_iorq"); 1431 return 0; /* not reached */ 1432 } 1433 1434 1435 /* 1436 * xyc_chain: build a chain. return dvma address of first element in 1437 * the chain. iorq != NULL: means we only want that item on the chain. 1438 */ 1439 1440 struct xy_iopb * 1441 xyc_chain(xycsc, iorq) 1442 struct xyc_softc *xycsc; 1443 struct xy_iorq *iorq; 1444 { 1445 int togo, chain, hand; 1446 struct xy_iopb *iopb, *prev_iopb; 1447 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1448 1449 /* 1450 * promote control IOPB to the top 1451 */ 1452 if (iorq == NULL) { 1453 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1454 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1455 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1456 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1457 } 1458 /* 1459 * special case: if iorq != NULL then we have a POLL or WAIT request. 1460 * we let these take priority and do them first. 1461 */ 1462 if (iorq) { 1463 xycsc->xy_chain[0] = iorq; 1464 iorq->iopb->chen = 0; 1465 return(iorq->iopb); 1466 } 1467 1468 /* 1469 * NORM case: do round robin and maybe chain (if allowed and possible) 1470 */ 1471 1472 chain = 0; 1473 hand = xycsc->xy_hand; 1474 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1475 1476 for (togo = XYC_MAXIOPB ; 1477 togo > 0 ; 1478 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1479 { 1480 1481 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1482 xycsc->iopbase[hand].done) 1483 continue; /* not ready-for-i/o */ 1484 1485 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1486 iopb = xycsc->xy_chain[chain]->iopb; 1487 iopb->chen = 0; 1488 if (chain != 0) { /* adding a link to a chain? */ 1489 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1490 prev_iopb->chen = 1; 1491 prev_iopb->nxtiopb = 0xffff & 1492 dvma_kvtopa(iopb, xycsc->bustype); 1493 } else { /* head of chain */ 1494 iorq = xycsc->xy_chain[chain]; 1495 } 1496 chain++; 1497 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1498 } 1499 return(iorq ? iorq->iopb : NULL); 1500 } 1501 1502 /* 1503 * xyc_piodriver 1504 * 1505 * programmed i/o driver. this function takes over the computer 1506 * and drains off the polled i/o request. it returns the status of the iorq 1507 * the caller is interesting in. 1508 */ 1509 int 1510 xyc_piodriver(xycsc, iorq) 1511 struct xyc_softc *xycsc; 1512 struct xy_iorq *iorq; 1513 1514 { 1515 int nreset = 0; 1516 int retval = 0; 1517 u_long res; 1518 1519 #ifdef XYC_DEBUG 1520 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1521 #endif 1522 1523 while (iorq->iopb->done == 0) { 1524 1525 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1526 1527 /* we expect some progress soon */ 1528 if (res == XY_ERR_FAIL && nreset >= 2) { 1529 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1530 #ifdef XYC_DEBUG 1531 printf("xyc_piodriver: timeout\n"); 1532 #endif 1533 return (XY_ERR_FAIL); 1534 } 1535 if (res == XY_ERR_FAIL) { 1536 if (xyc_reset(xycsc, 0, 1537 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1538 XY_ERR_FAIL, 1539 0) == XY_ERR_FAIL) 1540 return (XY_ERR_FAIL); /* flushes all but POLL 1541 * requests, resets */ 1542 continue; 1543 } 1544 1545 xyc_remove_iorq(xycsc); /* may resubmit request */ 1546 1547 if (iorq->iopb->done == 0) 1548 xyc_start(xycsc, iorq); 1549 } 1550 1551 /* get return value */ 1552 1553 retval = iorq->errno; 1554 1555 #ifdef XYC_DEBUG 1556 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1557 iorq->errno, xyc_e2str(iorq->errno)); 1558 #endif 1559 1560 /* start up any bufs that have queued */ 1561 1562 xyc_start(xycsc, NULL); 1563 1564 return (retval); 1565 } 1566 1567 /* 1568 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1569 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1570 */ 1571 void 1572 xyc_xyreset(xycsc, xysc) 1573 struct xyc_softc *xycsc; 1574 struct xy_softc *xysc; 1575 1576 { 1577 struct xy_iopb tmpiopb; 1578 u_long addr; 1579 int del; 1580 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1581 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1582 xycsc->ciopb->ien = 0; 1583 xycsc->ciopb->com = XYCMD_RST; 1584 xycsc->ciopb->unit = xysc->xy_drive; 1585 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1586 1587 XYC_GO(xycsc->xyc, addr); 1588 1589 del = XYC_RESETUSEC; 1590 while (del > 0) { 1591 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1592 DELAY(1); 1593 del--; 1594 } 1595 1596 if (del <= 0 || xycsc->ciopb->errs) { 1597 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1598 xyc_e2str(xycsc->ciopb->errno)); 1599 del = xycsc->xyc->xyc_rsetup; 1600 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1601 panic("xyc_reset"); 1602 } else { 1603 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1604 } 1605 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1606 } 1607 1608 1609 /* 1610 * xyc_reset: reset everything: requests are marked as errors except 1611 * a polled request (which is resubmitted) 1612 */ 1613 int 1614 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1615 struct xyc_softc *xycsc; 1616 int quiet, error; 1617 struct xy_iorq *blastmode; 1618 struct xy_softc *xysc; 1619 1620 { 1621 int del = 0, lcv, retval = XY_ERR_AOK; 1622 struct xy_iorq *iorq; 1623 1624 /* soft reset hardware */ 1625 1626 if (!quiet) 1627 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1628 del = xycsc->xyc->xyc_rsetup; 1629 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1630 if (del == XY_ERR_FAIL) { 1631 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1632 retval = XY_ERR_FAIL; 1633 } 1634 if (xysc) 1635 xyc_xyreset(xycsc, xysc); 1636 1637 /* fix queues based on "blast-mode" */ 1638 1639 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1640 iorq = &xycsc->reqs[lcv]; 1641 1642 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1643 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1644 XY_STATE(iorq->mode) != XY_SUB_NORM) 1645 /* is it active? */ 1646 continue; 1647 1648 if (blastmode == XY_RSET_ALL || 1649 blastmode != iorq) { 1650 /* failed */ 1651 iorq->errno = error; 1652 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1653 switch (XY_STATE(iorq->mode)) { 1654 case XY_SUB_NORM: 1655 iorq->buf->b_error = EIO; 1656 iorq->buf->b_flags |= B_ERROR; 1657 iorq->buf->b_resid = 1658 iorq->sectcnt * XYFM_BPS; 1659 /* Sun3: map/unmap regardless of B_PHYS */ 1660 dvma_mapout(iorq->dbufbase, 1661 iorq->buf->b_bcount); 1662 (void)BUFQ_GET(&iorq->xy->xyq); 1663 disk_unbusy(&iorq->xy->sc_dk, 1664 (iorq->buf->b_bcount - 1665 iorq->buf->b_resid)); 1666 biodone(iorq->buf); 1667 iorq->mode = XY_SUB_FREE; 1668 break; 1669 case XY_SUB_WAIT: 1670 wakeup(iorq); 1671 case XY_SUB_POLL: 1672 iorq->mode = 1673 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1674 break; 1675 } 1676 1677 } else { 1678 1679 /* resubmit, no need to do anything here */ 1680 } 1681 } 1682 1683 /* 1684 * now, if stuff is waiting, start it. 1685 * since we just reset it should go 1686 */ 1687 xyc_start(xycsc, NULL); 1688 1689 return (retval); 1690 } 1691 1692 /* 1693 * xyc_start: start waiting buffers 1694 */ 1695 1696 void 1697 xyc_start(xycsc, iorq) 1698 struct xyc_softc *xycsc; 1699 struct xy_iorq *iorq; 1700 1701 { 1702 int lcv; 1703 struct xy_softc *xy; 1704 1705 if (iorq == NULL) { 1706 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1707 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1708 if (BUFQ_PEEK(&xy->xyq) == NULL) continue; 1709 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1710 xyc_startbuf(xycsc, xy, BUFQ_PEEK(&xy->xyq)); 1711 } 1712 } 1713 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1714 } 1715 1716 /* 1717 * xyc_remove_iorq: remove "done" IOPB's. 1718 */ 1719 1720 int 1721 xyc_remove_iorq(xycsc) 1722 struct xyc_softc *xycsc; 1723 1724 { 1725 int errno, rq, comm, errs; 1726 struct xyc *xyc = xycsc->xyc; 1727 u_long addr; 1728 struct xy_iopb *iopb; 1729 struct xy_iorq *iorq; 1730 struct buf *bp; 1731 1732 if (xyc->xyc_csr & XYC_DERR) { 1733 /* 1734 * DOUBLE ERROR: should never happen under normal use. This 1735 * error is so bad, you can't even tell which IOPB is bad, so 1736 * we dump them all. 1737 */ 1738 errno = XY_ERR_DERR; 1739 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1740 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1741 printf("%s: soft reset failed!\n", 1742 xycsc->sc_dev.dv_xname); 1743 panic("xyc_remove_iorq: controller DEAD"); 1744 } 1745 return (XY_ERR_AOK); 1746 } 1747 1748 /* 1749 * get iopb that is done, loop down the chain 1750 */ 1751 1752 if (xyc->xyc_csr & XYC_ERR) { 1753 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1754 } 1755 if (xyc->xyc_csr & XYC_IPND) { 1756 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1757 } 1758 1759 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1760 iorq = xycsc->xy_chain[rq]; 1761 if (iorq == NULL) break; /* done ! */ 1762 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1763 continue; /* free, or done */ 1764 iopb = iorq->iopb; 1765 if (iopb->done == 0) 1766 continue; /* not done yet */ 1767 1768 comm = iopb->com; 1769 errs = iopb->errs; 1770 1771 if (errs) 1772 iorq->errno = iopb->errno; 1773 else 1774 iorq->errno = 0; 1775 1776 /* handle non-fatal errors */ 1777 1778 if (errs && 1779 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1780 continue; /* AOK: we resubmitted it */ 1781 1782 1783 /* this iorq is now done (hasn't been restarted or anything) */ 1784 1785 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1786 xyc_perror(iorq, iopb, 0); 1787 1788 /* now, if read/write check to make sure we got all the data 1789 * we needed. (this may not be the case if we got an error in 1790 * the middle of a multisector request). */ 1791 1792 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1793 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1794 /* we just successfully processed a bad144 sector 1795 * note: if we are in bad 144 mode, the pointers have 1796 * been advanced already (see above) and are pointing 1797 * at the bad144 sector. to exit bad144 mode, we 1798 * must advance the pointers 1 sector and issue a new 1799 * request if there are still sectors left to process 1800 * 1801 */ 1802 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1803 1804 /* exit b144 mode */ 1805 iorq->mode = iorq->mode & (~XY_MODE_B144); 1806 1807 if (iorq->sectcnt) { /* more to go! */ 1808 iorq->lasterror = iorq->errno = iopb->errno = 0; 1809 iopb->errs = iopb->done = 0; 1810 iorq->tries = 0; 1811 iopb->scnt = iorq->sectcnt; 1812 iopb->cyl = iorq->blockno / 1813 iorq->xy->sectpercyl; 1814 iopb->head = 1815 (iorq->blockno / iorq->xy->nhead) % 1816 iorq->xy->nhead; 1817 iopb->sect = iorq->blockno % XYFM_BPS; 1818 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1819 iopb->dataa = (addr & 0xffff); 1820 iopb->datar = ((addr & 0xff0000) >> 16); 1821 /* will resubit at end */ 1822 continue; 1823 } 1824 } 1825 /* final cleanup, totally done with this request */ 1826 1827 switch (XY_STATE(iorq->mode)) { 1828 case XY_SUB_NORM: 1829 bp = iorq->buf; 1830 if (errs) { 1831 bp->b_error = EIO; 1832 bp->b_flags |= B_ERROR; 1833 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1834 } else { 1835 bp->b_resid = 0; /* done */ 1836 } 1837 /* Sun3: map/unmap regardless of B_PHYS */ 1838 dvma_mapout(iorq->dbufbase, 1839 iorq->buf->b_bcount); 1840 (void)BUFQ_GET(&iorq->xy->xyq); 1841 disk_unbusy(&iorq->xy->sc_dk, 1842 (bp->b_bcount - bp->b_resid)); 1843 iorq->mode = XY_SUB_FREE; 1844 biodone(bp); 1845 break; 1846 case XY_SUB_WAIT: 1847 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1848 wakeup(iorq); 1849 break; 1850 case XY_SUB_POLL: 1851 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1852 break; 1853 } 1854 } 1855 1856 return (XY_ERR_AOK); 1857 } 1858 1859 /* 1860 * xyc_perror: print error. 1861 * - if still_trying is true: we got an error, retried and got a 1862 * different error. in that case lasterror is the old error, 1863 * and errno is the new one. 1864 * - if still_trying is not true, then if we ever had an error it 1865 * is in lasterror. also, if iorq->errno == 0, then we recovered 1866 * from that error (otherwise iorq->errno == iorq->lasterror). 1867 */ 1868 void 1869 xyc_perror(iorq, iopb, still_trying) 1870 struct xy_iorq *iorq; 1871 struct xy_iopb *iopb; 1872 int still_trying; 1873 1874 { 1875 1876 int error = iorq->lasterror; 1877 1878 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1879 : iorq->xyc->sc_dev.dv_xname); 1880 if (iorq->buf) 1881 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1882 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1883 printf("%s %d/%d/%d: ", 1884 (iopb->com == XYCMD_RD) ? "read" : "write", 1885 iopb->cyl, iopb->head, iopb->sect); 1886 printf("%s", xyc_e2str(error)); 1887 1888 if (still_trying) 1889 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1890 else 1891 if (iorq->errno == 0) 1892 printf(" [recovered in %d tries]", iorq->tries); 1893 1894 printf("\n"); 1895 } 1896 1897 /* 1898 * xyc_error: non-fatal error encountered... recover. 1899 * return AOK if resubmitted, return FAIL if this iopb is done 1900 */ 1901 int 1902 xyc_error(xycsc, iorq, iopb, comm) 1903 struct xyc_softc *xycsc; 1904 struct xy_iorq *iorq; 1905 struct xy_iopb *iopb; 1906 int comm; 1907 1908 { 1909 int errno = iorq->errno; 1910 int erract = xyc_entoact(errno); 1911 int oldmode, advance, i; 1912 1913 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1914 oldmode = iorq->mode; 1915 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1916 /* make xyc_start ignore us */ 1917 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1918 iorq->mode = oldmode; 1919 } 1920 /* check for read/write to a sector in bad144 table if bad: redirect 1921 * request to bad144 area */ 1922 1923 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1924 (iorq->mode & XY_MODE_B144) == 0) { 1925 advance = iorq->sectcnt - iopb->scnt; 1926 XYC_ADVANCE(iorq, advance); 1927 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1928 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1929 iorq->blockno % iorq->xy->nsect)) != -1) { 1930 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1931 * redirect */ 1932 iopb->errno = iopb->done = iopb->errs = 0; 1933 iopb->scnt = 1; 1934 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1935 /* second to last acyl */ 1936 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1937 * standard */ 1938 iopb->head = i / iorq->xy->nhead; 1939 iopb->sect = i % iorq->xy->nhead; 1940 /* will resubmit when we come out of remove_iorq */ 1941 return (XY_ERR_AOK); /* recovered! */ 1942 } 1943 } 1944 1945 /* 1946 * it isn't a bad144 sector, must be real error! see if we can retry 1947 * it? 1948 */ 1949 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1950 xyc_perror(iorq, iopb, 1); /* inform of error state 1951 * change */ 1952 iorq->lasterror = errno; 1953 1954 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1955 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1956 iorq->tries++; 1957 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1958 /* will resubmit at end of remove_iorq */ 1959 return (XY_ERR_AOK); /* recovered! */ 1960 } 1961 1962 /* failed to recover from this error */ 1963 return (XY_ERR_FAIL); 1964 } 1965 1966 /* 1967 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1968 */ 1969 void 1970 xyc_tick(arg) 1971 void *arg; 1972 1973 { 1974 struct xyc_softc *xycsc = arg; 1975 int lcv, s, reset = 0; 1976 1977 /* reduce ttl for each request if one goes to zero, reset xyc */ 1978 s = splbio(); 1979 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1980 if (xycsc->reqs[lcv].mode == 0 || 1981 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1982 continue; 1983 xycsc->reqs[lcv].ttl--; 1984 if (xycsc->reqs[lcv].ttl == 0) 1985 reset = 1; 1986 } 1987 if (reset) { 1988 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1989 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1990 } 1991 splx(s); 1992 1993 /* until next time */ 1994 1995 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1996 } 1997 1998 /* 1999 * xyc_ioctlcmd: this function provides a user level interface to the 2000 * controller via ioctl. this allows "format" programs to be written 2001 * in user code, and is also useful for some debugging. we return 2002 * an error code. called at user priority. 2003 * 2004 * XXX missing a few commands (see the 7053 driver for ideas) 2005 */ 2006 int 2007 xyc_ioctlcmd(xy, dev, xio) 2008 struct xy_softc *xy; 2009 dev_t dev; 2010 struct xd_iocmd *xio; 2011 2012 { 2013 int s, err, rqno; 2014 void * dvmabuf = NULL; 2015 struct xyc_softc *xycsc; 2016 2017 /* check sanity of requested command */ 2018 2019 switch (xio->cmd) { 2020 2021 case XYCMD_NOP: /* no op: everything should be zero */ 2022 if (xio->subfn || xio->dptr || xio->dlen || 2023 xio->block || xio->sectcnt) 2024 return (EINVAL); 2025 break; 2026 2027 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2028 case XYCMD_WR: 2029 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2030 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2031 return (EINVAL); 2032 break; 2033 2034 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2035 return (EINVAL); 2036 2037 break; 2038 2039 default: 2040 return (EINVAL);/* ??? */ 2041 } 2042 2043 /* create DVMA buffer for request if needed */ 2044 2045 if (xio->dlen) { 2046 dvmabuf = dvma_malloc(xio->dlen); 2047 if (xio->cmd == XYCMD_WR) { 2048 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2049 if (err) { 2050 dvma_free(dvmabuf, xio->dlen); 2051 return (err); 2052 } 2053 } 2054 } 2055 /* do it! */ 2056 2057 err = 0; 2058 xycsc = xy->parent; 2059 s = splbio(); 2060 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2061 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2062 if (rqno == XY_ERR_FAIL) { 2063 err = EIO; 2064 goto done; 2065 } 2066 xio->errno = xycsc->ciorq->errno; 2067 xio->tries = xycsc->ciorq->tries; 2068 XYC_DONE(xycsc, err); 2069 2070 if (xio->cmd == XYCMD_RD) 2071 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2072 2073 done: 2074 splx(s); 2075 if (dvmabuf) 2076 dvma_free(dvmabuf, xio->dlen); 2077 return (err); 2078 } 2079 2080 /* 2081 * xyc_e2str: convert error code number into an error string 2082 */ 2083 char * 2084 xyc_e2str(no) 2085 int no; 2086 { 2087 switch (no) { 2088 case XY_ERR_FAIL: 2089 return ("Software fatal error"); 2090 case XY_ERR_DERR: 2091 return ("DOUBLE ERROR"); 2092 case XY_ERR_AOK: 2093 return ("Successful completion"); 2094 case XY_ERR_IPEN: 2095 return("Interrupt pending"); 2096 case XY_ERR_BCFL: 2097 return("Busy conflict"); 2098 case XY_ERR_TIMO: 2099 return("Operation timeout"); 2100 case XY_ERR_NHDR: 2101 return("Header not found"); 2102 case XY_ERR_HARD: 2103 return("Hard ECC error"); 2104 case XY_ERR_ICYL: 2105 return("Illegal cylinder address"); 2106 case XY_ERR_ISEC: 2107 return("Illegal sector address"); 2108 case XY_ERR_SMAL: 2109 return("Last sector too small"); 2110 case XY_ERR_SACK: 2111 return("Slave ACK error (non-existent memory)"); 2112 case XY_ERR_CHER: 2113 return("Cylinder and head/header error"); 2114 case XY_ERR_SRTR: 2115 return("Auto-seek retry successful"); 2116 case XY_ERR_WPRO: 2117 return("Write-protect error"); 2118 case XY_ERR_UIMP: 2119 return("Unimplemented command"); 2120 case XY_ERR_DNRY: 2121 return("Drive not ready"); 2122 case XY_ERR_SZER: 2123 return("Sector count zero"); 2124 case XY_ERR_DFLT: 2125 return("Drive faulted"); 2126 case XY_ERR_ISSZ: 2127 return("Illegal sector size"); 2128 case XY_ERR_SLTA: 2129 return("Self test A"); 2130 case XY_ERR_SLTB: 2131 return("Self test B"); 2132 case XY_ERR_SLTC: 2133 return("Self test C"); 2134 case XY_ERR_SOFT: 2135 return("Soft ECC error"); 2136 case XY_ERR_SFOK: 2137 return("Soft ECC error recovered"); 2138 case XY_ERR_IHED: 2139 return("Illegal head"); 2140 case XY_ERR_DSEQ: 2141 return("Disk sequencer error"); 2142 case XY_ERR_SEEK: 2143 return("Seek error"); 2144 default: 2145 return ("Unknown error"); 2146 } 2147 } 2148 2149 int 2150 xyc_entoact(errno) 2151 2152 int errno; 2153 2154 { 2155 switch (errno) { 2156 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2157 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2158 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2159 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2160 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2161 2162 return(XY_ERA_PROG); /* program error ! */ 2163 2164 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2165 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2166 case XY_ERR_SOFT: 2167 2168 return(XY_ERA_HARD); /* hard error, retry */ 2169 2170 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2171 2172 return(XY_ERA_RSET); /* hard error reset */ 2173 2174 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2175 2176 return(XY_ERA_SOFT); /* an FYI error */ 2177 2178 case XY_ERR_WPRO: 2179 2180 return(XY_ERA_WPRO); /* write protect */ 2181 } 2182 2183 return(XY_ERA_PROG); /* ??? */ 2184 } 2185
Indexes created Mon Sep 29 21:09:56 GMT 2025