xy.c revision 1.49
1 /* $NetBSD: xy.c,v 1.49 2004/10/28 07:07:38 yamt 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 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.49 2004/10/28 07:07:38 yamt Exp $"); 56 57 #undef XYC_DEBUG /* full debug */ 58 #undef XYC_DIAG /* extra sanity checks */ 59 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 60 #define XYC_DIAG /* link in with master DIAG option */ 61 #endif 62 63 #include <sys/param.h> 64 #include <sys/proc.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/file.h> 68 #include <sys/stat.h> 69 #include <sys/ioctl.h> 70 #include <sys/buf.h> 71 #include <sys/bufq.h> 72 #include <sys/uio.h> 73 #include <sys/malloc.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/syslog.h> 78 #include <sys/dkbad.h> 79 #include <sys/conf.h> 80 81 #include <uvm/uvm_extern.h> 82 83 #include <dev/sun/disklabel.h> 84 85 #include <machine/autoconf.h> 86 #include <machine/dvma.h> 87 88 #include <sun3/dev/xyreg.h> 89 #include <sun3/dev/xyvar.h> 90 #include <sun3/dev/xio.h> 91 92 #include "locators.h" 93 94 /* 95 * Print a complaint when no xy children were specified 96 * in the config file. Better than a link error... 97 * 98 * XXX: Some folks say this driver should be split in two, 99 * but that seems pointless with ONLY one type of child. 100 */ 101 #include "xy.h" 102 #if NXY == 0 103 #error "xyc but no xy?" 104 #endif 105 106 /* 107 * macros 108 */ 109 110 /* 111 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 112 */ 113 #define XYC_GO(XYC, ADDR) { \ 114 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 115 (ADDR) = ((ADDR) >> 8); \ 116 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 117 (ADDR) = ((ADDR) >> 8); \ 118 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 119 (ADDR) = ((ADDR) >> 8); \ 120 (XYC)->xyc_reloc_hi = (ADDR); \ 121 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 122 } 123 124 /* 125 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 126 */ 127 128 #define XYC_DONE(SC,ER) { \ 129 if ((ER) == XY_ERR_AOK) { \ 130 (ER) = (SC)->ciorq->errno; \ 131 (SC)->ciorq->mode = XY_SUB_FREE; \ 132 wakeup((SC)->ciorq); \ 133 } \ 134 } 135 136 /* 137 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 138 */ 139 140 #define XYC_ADVANCE(IORQ, N) { \ 141 if (N) { \ 142 (IORQ)->sectcnt -= (N); \ 143 (IORQ)->blockno += (N); \ 144 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 145 } \ 146 } 147 148 /* 149 * note - addresses you can sleep on: 150 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 151 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 152 */ 153 154 155 /* 156 * function prototypes 157 * "xyc_*" functions are internal, all others are external interfaces 158 */ 159 160 /* internals */ 161 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 162 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 163 char *xyc_e2str __P((int)); 164 int xyc_entoact __P((int)); 165 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 166 struct xy_iopb *, int)); 167 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 168 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 169 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 170 int xyc_remove_iorq __P((struct xyc_softc *)); 171 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 172 struct xy_softc *)); 173 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 174 struct xy_softc *, int, u_long, int, 175 caddr_t, struct buf *)); 176 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 177 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 178 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 179 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 180 void xyc_tick __P((void *)); 181 int xyc_unbusy __P((struct xyc *, int)); 182 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 183 184 /* machine interrupt hook */ 185 int xycintr __P((void *)); 186 187 /* autoconf */ 188 static int xycmatch __P((struct device *, struct cfdata *, void *)); 189 static void xycattach __P((struct device *, struct device *, void *)); 190 static int xyc_print __P((void *, const char *name)); 191 192 static int xymatch __P((struct device *, struct cfdata *, void *)); 193 static void xyattach __P((struct device *, struct device *, void *)); 194 static void xy_init __P((struct xy_softc *)); 195 196 static void xydummystrat __P((struct buf *)); 197 int xygetdisklabel __P((struct xy_softc *, void *)); 198 199 /* 200 * cfattach's: device driver interface to autoconfig 201 */ 202 203 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 204 xycmatch, xycattach, NULL, NULL); 205 206 CFATTACH_DECL(xy, sizeof(struct xy_softc), 207 xymatch, xyattach, NULL, NULL); 208 209 extern struct cfdriver xy_cd; 210 211 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 212 int driveno; /* unit number */ 213 }; 214 215 dev_type_open(xyopen); 216 dev_type_close(xyclose); 217 dev_type_read(xyread); 218 dev_type_write(xywrite); 219 dev_type_ioctl(xyioctl); 220 dev_type_strategy(xystrategy); 221 dev_type_dump(xydump); 222 dev_type_size(xysize); 223 224 const struct bdevsw xy_bdevsw = { 225 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 226 }; 227 228 const struct cdevsw xy_cdevsw = { 229 xyopen, xyclose, xyread, xywrite, xyioctl, 230 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 231 }; 232 233 /* 234 * dkdriver 235 */ 236 237 struct dkdriver xydkdriver = { xystrategy }; 238 239 /* 240 * start: disk label fix code (XXX) 241 */ 242 243 static void *xy_labeldata; 244 245 static void 246 xydummystrat(bp) 247 struct buf *bp; 248 { 249 if (bp->b_bcount != XYFM_BPS) 250 panic("xydummystrat"); 251 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 252 bp->b_flags |= B_DONE; 253 bp->b_flags &= ~B_BUSY; 254 } 255 256 int 257 xygetdisklabel(xy, b) 258 struct xy_softc *xy; 259 void *b; 260 { 261 const char *err; 262 struct sun_disklabel *sdl; 263 264 /* We already have the label data in `b'; setup for dummy strategy */ 265 xy_labeldata = b; 266 267 /* Required parameter for readdisklabel() */ 268 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 269 270 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 271 xydummystrat, 272 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 273 if (err) { 274 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 275 return(XY_ERR_FAIL); 276 } 277 278 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 279 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 280 if (sdl->sl_magic == SUN_DKMAGIC) 281 xy->pcyl = sdl->sl_pcyl; 282 else { 283 printf("%s: WARNING: no `pcyl' in disk label.\n", 284 xy->sc_dev.dv_xname); 285 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 286 xy->sc_dk.dk_label->d_acylinders; 287 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 288 xy->sc_dev.dv_xname, xy->pcyl); 289 } 290 291 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 292 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 293 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 294 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 295 xy->sectpercyl = xy->nhead * xy->nsect; 296 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 297 * sun->bsd */ 298 return(XY_ERR_AOK); 299 } 300 301 /* 302 * end: disk label fix code (XXX) 303 */ 304 305 /* 306 * a u t o c o n f i g f u n c t i o n s 307 */ 308 309 /* 310 * xycmatch: determine if xyc is present or not. we do a 311 * soft reset to detect the xyc. 312 */ 313 static int 314 xycmatch(parent, cf, aux) 315 struct device *parent; 316 struct cfdata *cf; 317 void *aux; 318 { 319 struct confargs *ca = aux; 320 321 /* No default VME address. */ 322 if (ca->ca_paddr == -1) 323 return (0); 324 325 /* Make sure something is there... */ 326 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 327 return (0); 328 329 /* Default interrupt priority. */ 330 if (ca->ca_intpri == -1) 331 ca->ca_intpri = 2; 332 333 return (1); 334 } 335 336 /* 337 * xycattach: attach controller 338 */ 339 static void 340 xycattach(parent, self, aux) 341 struct device *parent, *self; 342 void *aux; 343 { 344 struct xyc_softc *xyc = (void *) self; 345 struct confargs *ca = aux; 346 struct xyc_attach_args xa; 347 int lcv, err, res, pbsz; 348 void *tmp, *tmp2; 349 u_long ultmp; 350 351 /* get addressing and intr level stuff from autoconfig and load it 352 * into our xyc_softc. */ 353 354 xyc->xyc = (struct xyc *) 355 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 356 xyc->bustype = ca->ca_bustype; 357 xyc->ipl = ca->ca_intpri; 358 xyc->vector = ca->ca_intvec; 359 xyc->no_ols = 0; /* XXX should be from config */ 360 361 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 362 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 363 364 /* 365 * allocate and zero buffers 366 * check boundaries of the KVA's ... all IOPBs must reside in 367 * the same 64K region. 368 */ 369 370 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 371 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 372 ultmp = (u_long) tmp; 373 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 374 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 375 dvma_free(tmp2, pbsz); 376 ultmp = (u_long) tmp; 377 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 378 printf("%s: can't alloc IOPB mem in 64K\n", 379 xyc->sc_dev.dv_xname); 380 return; 381 } 382 } 383 memset(tmp, 0, pbsz); 384 xyc->iopbase = tmp; 385 xyc->dvmaiopb = (struct xy_iopb *) 386 dvma_kvtopa(xyc->iopbase, xyc->bustype); 387 xyc->reqs = (struct xy_iorq *) 388 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 389 if (xyc->reqs == NULL) 390 panic("xyc malloc"); 391 memset(xyc->reqs, 0, XYC_MAXIOPB * sizeof(struct xy_iorq)); 392 393 /* 394 * init iorq to iopb pointers, and non-zero fields in the 395 * iopb which never change. 396 */ 397 398 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 399 xyc->xy_chain[lcv] = NULL; 400 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 401 xyc->iopbase[lcv].asr = 1; /* always the same */ 402 xyc->iopbase[lcv].eef = 1; /* always the same */ 403 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 404 xyc->iopbase[lcv].aud = 1; /* always the same */ 405 xyc->iopbase[lcv].relo = 1; /* always the same */ 406 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 407 } 408 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 409 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 410 xyc->xy_hand = 0; 411 412 /* read controller parameters and insure we have a 450/451 */ 413 414 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 415 res = xyc->ciopb->ctyp; 416 XYC_DONE(xyc, err); 417 if (res != XYCT_450) { 418 if (err) 419 printf(": %s: ", xyc_e2str(err)); 420 printf(": doesn't identify as a 450/451\n"); 421 return; 422 } 423 printf(": Xylogics 450/451"); 424 if (xyc->no_ols) 425 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 426 printf("\n"); 427 if (err) { 428 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 429 xyc_e2str(err)); 430 return; 431 } 432 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 433 printf("%s: 24 bit addressing turned off\n", 434 xyc->sc_dev.dv_xname); 435 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 436 printf("to enable 24 bit mode and this driver\n"); 437 return; 438 } 439 440 /* link in interrupt with higher level software */ 441 isr_add_vectored(xycintr, (void *)xyc, 442 ca->ca_intpri, ca->ca_intvec); 443 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 444 xyc->sc_dev.dv_xname, "intr"); 445 446 callout_init(&xyc->sc_tick_ch); 447 448 /* now we must look for disks using autoconfig */ 449 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 450 (void) config_found(self, (void *) &xa, xyc_print); 451 452 /* start the watchdog clock */ 453 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 454 } 455 456 static int 457 xyc_print(aux, name) 458 void *aux; 459 const char *name; 460 { 461 struct xyc_attach_args *xa = aux; 462 463 if (name != NULL) 464 aprint_normal("%s: ", name); 465 466 if (xa->driveno != -1) 467 aprint_normal(" drive %d", xa->driveno); 468 469 return UNCONF; 470 } 471 472 /* 473 * xymatch: probe for disk. 474 * 475 * note: we almost always say disk is present. this allows us to 476 * spin up and configure a disk after the system is booted (we can 477 * call xyattach!). Also, wire down the relationship between the 478 * xy* and xyc* devices, to simplify boot device identification. 479 */ 480 static int 481 xymatch(parent, cf, aux) 482 struct device *parent; 483 struct cfdata *cf; 484 void *aux; 485 { 486 struct xyc_attach_args *xa = aux; 487 int xy_unit; 488 489 /* Match only on the "wired-down" controller+disk. */ 490 xy_unit = parent->dv_unit * 2 + xa->driveno; 491 if (cf->cf_unit != xy_unit) 492 return (0); 493 494 return (1); 495 } 496 497 /* 498 * xyattach: attach a disk. 499 */ 500 static void 501 xyattach(parent, self, aux) 502 struct device *parent, *self; 503 void *aux; 504 { 505 struct xy_softc *xy = (void *) self; 506 struct xyc_softc *xyc = (void *) parent; 507 struct xyc_attach_args *xa = aux; 508 509 printf("\n"); 510 511 /* 512 * Always re-initialize the disk structure. We want statistics 513 * to start with a clean slate. 514 */ 515 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 516 xy->sc_dk.dk_driver = &xydkdriver; 517 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 518 519 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 520 xy->flags = 0; 521 xy->parent = xyc; 522 523 /* init queue of waiting bufs */ 524 bufq_alloc(&xy->xyq, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 525 xy->xyrq = &xyc->reqs[xa->driveno]; 526 527 xy->xy_drive = xa->driveno; 528 xyc->sc_drives[xa->driveno] = xy; 529 530 /* Do init work common to attach and open. */ 531 xy_init(xy); 532 } 533 534 /* 535 * end of autoconfig functions 536 */ 537 538 /* 539 * Initialize a disk. This can be called from both autoconf and 540 * also from xyopen/xystrategy. 541 */ 542 static void 543 xy_init(xy) 544 struct xy_softc *xy; 545 { 546 struct xyc_softc *xyc; 547 struct dkbad *dkb; 548 void *dvmabuf; 549 int err, spt, mb, blk, lcv, fullmode, newstate; 550 551 xyc = xy->parent; 552 xy->state = XY_DRIVE_ATTACHING; 553 newstate = XY_DRIVE_UNKNOWN; 554 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 555 dvmabuf = dvma_malloc(XYFM_BPS); 556 557 /* first try and reset the drive */ 558 559 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 560 XYC_DONE(xyc, err); 561 if (err == XY_ERR_DNRY) { 562 printf("%s: drive %d: off-line\n", 563 xy->sc_dev.dv_xname, xy->xy_drive); 564 goto done; 565 } 566 if (err) { 567 printf("%s: ERROR 0x%02x (%s)\n", 568 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 569 goto done; 570 } 571 printf("%s: drive %d ready", 572 xy->sc_dev.dv_xname, xy->xy_drive); 573 574 /* 575 * now set drive parameters (to semi-bogus values) so we can read the 576 * disk label. 577 */ 578 xy->pcyl = xy->ncyl = 1; 579 xy->acyl = 0; 580 xy->nhead = 1; 581 xy->nsect = 1; 582 xy->sectpercyl = 1; 583 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 584 xy->dkb.bt_bad[lcv].bt_cyl = 585 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 586 587 /* read disk label */ 588 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 589 xy->drive_type++) { 590 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 591 dvmabuf, fullmode); 592 XYC_DONE(xyc, err); 593 if (err == XY_ERR_AOK) break; 594 } 595 596 if (err != XY_ERR_AOK) { 597 printf("%s: reading disk label failed: %s\n", 598 xy->sc_dev.dv_xname, xyc_e2str(err)); 599 goto done; 600 } 601 printf("%s: drive type %d\n", 602 xy->sc_dev.dv_xname, xy->drive_type); 603 604 newstate = XY_DRIVE_NOLABEL; 605 606 xy->hw_spt = spt = 0; /* XXX needed ? */ 607 /* Attach the disk: must be before getdisklabel to malloc label */ 608 disk_attach(&xy->sc_dk); 609 610 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 611 goto done; 612 613 /* inform the user of what is up */ 614 printf("%s: <%s>, pcyl %d\n", 615 xy->sc_dev.dv_xname, 616 (char *)dvmabuf, xy->pcyl); 617 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 618 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 619 xy->sc_dev.dv_xname, mb, 620 xy->ncyl, xy->nhead, xy->nsect); 621 622 /* 623 * 450/451 stupidity: the drive type is encoded into the format 624 * of the disk. the drive type in the IOPB must match the drive 625 * type in the format, or you will not be able to do I/O to the 626 * disk (you get header not found errors). if you have two drives 627 * of different sizes that have the same drive type in their 628 * formatting then you are out of luck. 629 * 630 * this problem was corrected in the 753/7053. 631 */ 632 633 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 634 struct xy_softc *oxy; 635 636 oxy = xyc->sc_drives[lcv]; 637 if (oxy == NULL || oxy == xy) continue; 638 if (oxy->drive_type != xy->drive_type) continue; 639 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 640 xy->nhead != oxy->nhead) { 641 printf("%s: %s and %s must be the same size!\n", 642 xyc->sc_dev.dv_xname, 643 xy ->sc_dev.dv_xname, 644 oxy->sc_dev.dv_xname); 645 panic("xy drive size mismatch"); 646 } 647 } 648 649 650 /* now set the real drive parameters! */ 651 blk = (xy->nsect - 1) + 652 ((xy->nhead - 1) * xy->nsect) + 653 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 654 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 655 XYC_DONE(xyc, err); 656 if (err) { 657 printf("%s: write drive size failed: %s\n", 658 xy->sc_dev.dv_xname, xyc_e2str(err)); 659 goto done; 660 } 661 newstate = XY_DRIVE_ONLINE; 662 663 /* 664 * read bad144 table. this table resides on the first sector of the 665 * last track of the disk (i.e. second cyl of "acyl" area). 666 */ 667 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 668 /* last cyl */ 669 (xy->nhead - 1) * xy->nsect; /* last head */ 670 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 671 dvmabuf, fullmode); 672 XYC_DONE(xyc, err); 673 if (err) { 674 printf("%s: reading bad144 failed: %s\n", 675 xy->sc_dev.dv_xname, xyc_e2str(err)); 676 goto done; 677 } 678 679 /* check dkbad for sanity */ 680 dkb = (struct dkbad *) dvmabuf; 681 for (lcv = 0; lcv < 126; lcv++) { 682 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 683 dkb->bt_bad[lcv].bt_cyl == 0) && 684 dkb->bt_bad[lcv].bt_trksec == 0xffff) 685 continue; /* blank */ 686 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 687 break; 688 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 689 break; 690 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 691 break; 692 } 693 if (lcv != 126) { 694 printf("%s: warning: invalid bad144 sector!\n", 695 xy->sc_dev.dv_xname); 696 } else { 697 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 698 } 699 700 done: 701 xy->state = newstate; 702 dvma_free(dvmabuf, XYFM_BPS); 703 } 704 705 /* 706 * { b , c } d e v s w f u n c t i o n s 707 */ 708 709 /* 710 * xyclose: close device 711 */ 712 int 713 xyclose(dev, flag, fmt, p) 714 dev_t dev; 715 int flag, fmt; 716 struct proc *p; 717 { 718 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 719 int part = DISKPART(dev); 720 721 /* clear mask bits */ 722 723 switch (fmt) { 724 case S_IFCHR: 725 xy->sc_dk.dk_copenmask &= ~(1 << part); 726 break; 727 case S_IFBLK: 728 xy->sc_dk.dk_bopenmask &= ~(1 << part); 729 break; 730 } 731 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 732 733 return 0; 734 } 735 736 /* 737 * xydump: crash dump system 738 */ 739 int 740 xydump(dev, blkno, va, sz) 741 dev_t dev; 742 daddr_t blkno; 743 caddr_t va; 744 size_t sz; 745 { 746 int unit, part; 747 struct xy_softc *xy; 748 749 unit = DISKUNIT(dev); 750 if (unit >= xy_cd.cd_ndevs) 751 return ENXIO; 752 part = DISKPART(dev); 753 754 xy = xy_cd.cd_devs[unit]; 755 756 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 757 'a' + part); 758 759 return ENXIO; 760 761 /* outline: globals: "dumplo" == sector number of partition to start 762 * dump at (convert to physical sector with partition table) 763 * "dumpsize" == size of dump in clicks "physmem" == size of physical 764 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 765 * physmem) 766 * 767 * dump a copy of physical memory to the dump device starting at sector 768 * "dumplo" in the swap partition (make sure > 0). map in pages as 769 * we go. use polled I/O. 770 * 771 * XXX how to handle NON_CONTIG? 772 */ 773 } 774 775 /* 776 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 777 */ 778 int 779 xyioctl(dev, command, addr, flag, p) 780 dev_t dev; 781 u_long command; 782 caddr_t addr; 783 int flag; 784 struct proc *p; 785 786 { 787 struct xy_softc *xy; 788 struct xd_iocmd *xio; 789 int error, s, unit; 790 791 unit = DISKUNIT(dev); 792 793 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 794 return (ENXIO); 795 796 /* switch on ioctl type */ 797 798 switch (command) { 799 case DIOCSBAD: /* set bad144 info */ 800 if ((flag & FWRITE) == 0) 801 return EBADF; 802 s = splbio(); 803 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 804 splx(s); 805 return 0; 806 807 case DIOCGDINFO: /* get disk label */ 808 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 809 return 0; 810 811 case DIOCGPART: /* get partition info */ 812 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 813 ((struct partinfo *) addr)->part = 814 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 815 return 0; 816 817 case DIOCSDINFO: /* set disk label */ 818 if ((flag & FWRITE) == 0) 819 return EBADF; 820 error = setdisklabel(xy->sc_dk.dk_label, 821 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 822 xy->sc_dk.dk_cpulabel); 823 if (error == 0) { 824 if (xy->state == XY_DRIVE_NOLABEL) 825 xy->state = XY_DRIVE_ONLINE; 826 } 827 return error; 828 829 case DIOCWLABEL: /* change write status of disk label */ 830 if ((flag & FWRITE) == 0) 831 return EBADF; 832 if (*(int *) addr) 833 xy->flags |= XY_WLABEL; 834 else 835 xy->flags &= ~XY_WLABEL; 836 return 0; 837 838 case DIOCWDINFO: /* write disk label */ 839 if ((flag & FWRITE) == 0) 840 return EBADF; 841 error = setdisklabel(xy->sc_dk.dk_label, 842 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 843 xy->sc_dk.dk_cpulabel); 844 if (error == 0) { 845 if (xy->state == XY_DRIVE_NOLABEL) 846 xy->state = XY_DRIVE_ONLINE; 847 848 /* Simulate opening partition 0 so write succeeds. */ 849 xy->sc_dk.dk_openmask |= (1 << 0); 850 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 851 xystrategy, xy->sc_dk.dk_label, 852 xy->sc_dk.dk_cpulabel); 853 xy->sc_dk.dk_openmask = 854 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 855 } 856 return error; 857 858 case DIOSXDCMD: 859 xio = (struct xd_iocmd *) addr; 860 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 861 return (error); 862 return (xyc_ioctlcmd(xy, dev, xio)); 863 864 default: 865 return ENOTTY; 866 } 867 } 868 869 /* 870 * xyopen: open drive 871 */ 872 int 873 xyopen(dev, flag, fmt, p) 874 dev_t dev; 875 int flag, fmt; 876 struct proc *p; 877 { 878 int err, unit, part, s; 879 struct xy_softc *xy; 880 881 /* first, could it be a valid target? */ 882 unit = DISKUNIT(dev); 883 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 884 return (ENXIO); 885 part = DISKPART(dev); 886 err = 0; 887 888 /* 889 * If some other processing is doing init, sleep. 890 */ 891 s = splbio(); 892 while (xy->state == XY_DRIVE_ATTACHING) { 893 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 894 err = EINTR; 895 goto done; 896 } 897 } 898 /* Do we need to init the drive? */ 899 if (xy->state == XY_DRIVE_UNKNOWN) { 900 xy_init(xy); 901 wakeup(&xy->state); 902 } 903 /* Was the init successful? */ 904 if (xy->state == XY_DRIVE_UNKNOWN) { 905 err = EIO; 906 goto done; 907 } 908 909 /* check for partition */ 910 if (part != RAW_PART && 911 (part >= xy->sc_dk.dk_label->d_npartitions || 912 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 913 err = ENXIO; 914 goto done; 915 } 916 917 /* set open masks */ 918 switch (fmt) { 919 case S_IFCHR: 920 xy->sc_dk.dk_copenmask |= (1 << part); 921 break; 922 case S_IFBLK: 923 xy->sc_dk.dk_bopenmask |= (1 << part); 924 break; 925 } 926 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 927 928 done: 929 splx(s); 930 return (err); 931 } 932 933 int 934 xyread(dev, uio, flags) 935 dev_t dev; 936 struct uio *uio; 937 int flags; 938 { 939 940 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 941 } 942 943 int 944 xywrite(dev, uio, flags) 945 dev_t dev; 946 struct uio *uio; 947 int flags; 948 { 949 950 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 951 } 952 953 954 /* 955 * xysize: return size of a partition for a dump 956 */ 957 958 int 959 xysize(dev) 960 dev_t dev; 961 962 { 963 struct xy_softc *xysc; 964 int unit, part, size, omask; 965 966 /* valid unit? */ 967 unit = DISKUNIT(dev); 968 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 969 return (-1); 970 971 part = DISKPART(dev); 972 omask = xysc->sc_dk.dk_openmask & (1 << part); 973 974 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 975 return (-1); 976 977 /* do it */ 978 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 979 size = -1; /* only give valid size for swap partitions */ 980 else 981 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 982 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 983 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 984 return (-1); 985 return (size); 986 } 987 988 /* 989 * xystrategy: buffering system interface to xy. 990 */ 991 void 992 xystrategy(bp) 993 struct buf *bp; 994 995 { 996 struct xy_softc *xy; 997 int s, unit; 998 struct disklabel *lp; 999 daddr_t blkno; 1000 1001 unit = DISKUNIT(bp->b_dev); 1002 1003 /* check for live device */ 1004 1005 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1006 bp->b_blkno < 0 || 1007 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1008 bp->b_error = EINVAL; 1009 goto bad; 1010 } 1011 1012 /* There should always be an open first. */ 1013 if (xy->state == XY_DRIVE_UNKNOWN) { 1014 bp->b_error = EIO; 1015 goto bad; 1016 } 1017 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1018 /* no I/O to unlabeled disks, unless raw partition */ 1019 bp->b_error = EIO; 1020 goto bad; 1021 } 1022 /* short circuit zero length request */ 1023 1024 if (bp->b_bcount == 0) 1025 goto done; 1026 1027 /* check bounds with label (disksubr.c). Determine the size of the 1028 * transfer, and make sure it is within the boundaries of the 1029 * partition. Adjust transfer if needed, and signal errors or early 1030 * completion. */ 1031 1032 lp = xy->sc_dk.dk_label; 1033 1034 if (bounds_check_with_label(&xy->sc_dk, bp, 1035 (xy->flags & XY_WLABEL) != 0) <= 0) 1036 goto done; 1037 1038 /* 1039 * Now convert the block number to absolute and put it in 1040 * terms of the device's logical block size. 1041 */ 1042 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1043 if (DISKPART(bp->b_dev) != RAW_PART) 1044 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1045 1046 bp->b_rawblkno = blkno; 1047 1048 /* 1049 * now we know we have a valid buf structure that we need to do I/O 1050 * on. 1051 */ 1052 1053 s = splbio(); /* protect the queues */ 1054 1055 BUFQ_PUT(&xy->xyq, bp); /* XXX disksort_cylinder */ 1056 1057 /* start 'em up */ 1058 1059 xyc_start(xy->parent, NULL); 1060 1061 /* done! */ 1062 1063 splx(s); 1064 return; 1065 1066 bad: /* tells upper layers we have an error */ 1067 bp->b_flags |= B_ERROR; 1068 done: /* tells upper layers we are done with this 1069 * buf */ 1070 bp->b_resid = bp->b_bcount; 1071 biodone(bp); 1072 } 1073 /* 1074 * end of {b,c}devsw functions 1075 */ 1076 1077 /* 1078 * i n t e r r u p t f u n c t i o n 1079 * 1080 * xycintr: hardware interrupt. 1081 */ 1082 int 1083 xycintr(v) 1084 void *v; 1085 1086 { 1087 struct xyc_softc *xycsc = v; 1088 1089 /* kick the event counter */ 1090 xycsc->sc_intrcnt.ev_count++; 1091 1092 /* remove as many done IOPBs as possible */ 1093 xyc_remove_iorq(xycsc); 1094 1095 /* start any iorq's already waiting */ 1096 xyc_start(xycsc, NULL); 1097 1098 return (1); 1099 } 1100 /* 1101 * end of interrupt function 1102 */ 1103 1104 /* 1105 * i n t e r n a l f u n c t i o n s 1106 */ 1107 1108 /* 1109 * xyc_rqinit: fill out the fields of an I/O request 1110 */ 1111 1112 inline void 1113 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1114 struct xy_iorq *rq; 1115 struct xyc_softc *xyc; 1116 struct xy_softc *xy; 1117 int md; 1118 u_long blk; 1119 int cnt; 1120 caddr_t db; 1121 struct buf *bp; 1122 { 1123 rq->xyc = xyc; 1124 rq->xy = xy; 1125 rq->ttl = XYC_MAXTTL + 10; 1126 rq->mode = md; 1127 rq->tries = rq->errno = rq->lasterror = 0; 1128 rq->blockno = blk; 1129 rq->sectcnt = cnt; 1130 rq->dbuf = rq->dbufbase = db; 1131 rq->buf = bp; 1132 } 1133 1134 /* 1135 * xyc_rqtopb: load up an IOPB based on an iorq 1136 */ 1137 1138 void 1139 xyc_rqtopb(iorq, iopb, cmd, subfun) 1140 struct xy_iorq *iorq; 1141 struct xy_iopb *iopb; 1142 int cmd, subfun; 1143 1144 { 1145 u_long block, dp; 1146 1147 /* normal IOPB case, standard stuff */ 1148 1149 /* chain bit handled later */ 1150 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1151 iopb->com = cmd; 1152 iopb->errno = 0; 1153 iopb->errs = 0; 1154 iopb->done = 0; 1155 if (iorq->xy) { 1156 iopb->unit = iorq->xy->xy_drive; 1157 iopb->dt = iorq->xy->drive_type; 1158 } else { 1159 iopb->unit = 0; 1160 iopb->dt = 0; 1161 } 1162 block = iorq->blockno; 1163 if (iorq->xy == NULL || block == 0) { 1164 iopb->sect = iopb->head = iopb->cyl = 0; 1165 } else { 1166 iopb->sect = block % iorq->xy->nsect; 1167 block = block / iorq->xy->nsect; 1168 iopb->head = block % iorq->xy->nhead; 1169 block = block / iorq->xy->nhead; 1170 iopb->cyl = block; 1171 } 1172 iopb->scnt = iorq->sectcnt; 1173 if (iorq->dbuf == NULL) { 1174 iopb->dataa = 0; 1175 iopb->datar = 0; 1176 } else { 1177 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1178 iopb->dataa = (dp & 0xffff); 1179 iopb->datar = ((dp & 0xff0000) >> 16); 1180 } 1181 iopb->subfn = subfun; 1182 } 1183 1184 1185 /* 1186 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1187 */ 1188 1189 int 1190 xyc_unbusy(xyc, del) 1191 1192 struct xyc *xyc; 1193 int del; 1194 1195 { 1196 while (del-- > 0) { 1197 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1198 break; 1199 DELAY(1); 1200 } 1201 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1202 } 1203 1204 /* 1205 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1206 * note that NORM requests are handled separately. 1207 */ 1208 int 1209 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1210 struct xyc_softc *xycsc; 1211 int cmd, subfn, unit, block, scnt; 1212 char *dptr; 1213 int fullmode; 1214 { 1215 struct xy_iorq *iorq = xycsc->ciorq; 1216 struct xy_iopb *iopb = xycsc->ciopb; 1217 int submode = XY_STATE(fullmode); 1218 1219 /* 1220 * is someone else using the control iopq wait for it if we can 1221 */ 1222 start: 1223 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1224 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1225 return(XY_ERR_FAIL); 1226 goto start; 1227 } 1228 1229 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1230 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1231 iorq->mode = XY_SUB_FREE; 1232 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1233 } 1234 1235 /* init iorq/iopb */ 1236 1237 xyc_rqinit(iorq, xycsc, 1238 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1239 fullmode, block, scnt, dptr, NULL); 1240 1241 /* load IOPB from iorq */ 1242 1243 xyc_rqtopb(iorq, iopb, cmd, subfn); 1244 1245 /* submit it for processing */ 1246 1247 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1248 1249 return(XY_ERR_AOK); 1250 } 1251 1252 /* 1253 * xyc_startbuf 1254 * start a buffer for running 1255 */ 1256 1257 int 1258 xyc_startbuf(xycsc, xysc, bp) 1259 struct xyc_softc *xycsc; 1260 struct xy_softc *xysc; 1261 struct buf *bp; 1262 1263 { 1264 int partno; 1265 struct xy_iorq *iorq; 1266 struct xy_iopb *iopb; 1267 u_long block; 1268 caddr_t dbuf; 1269 1270 iorq = xysc->xyrq; 1271 iopb = iorq->iopb; 1272 1273 /* get buf */ 1274 1275 if (bp == NULL) 1276 panic("xyc_startbuf null buf"); 1277 1278 partno = DISKPART(bp->b_dev); 1279 #ifdef XYC_DEBUG 1280 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1281 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1282 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1283 bp->b_bcount, bp->b_data); 1284 #endif 1285 1286 /* 1287 * load request. 1288 * 1289 * also, note that there are two kinds of buf structures, those with 1290 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1291 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1292 * buffer which has already been mapped into DVMA space. (Not on sun3) 1293 * However, if B_PHYS is not set, then the buffer is a normal system 1294 * buffer which does *not* live in DVMA space. In that case we call 1295 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1296 * 1297 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1298 * as mapped into DVMA space, where as the bp->b_data points to its 1299 * non-DVMA mapping. 1300 * 1301 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1302 * into dvma space, only that it was remapped into the kernel. 1303 * We ALWAYS have to remap the kernel buf into DVMA space. 1304 * (It is done inexpensively, using whole segments!) 1305 */ 1306 1307 block = bp->b_rawblkno; 1308 1309 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1310 if (dbuf == NULL) { /* out of DVMA space */ 1311 printf("%s: warning: out of DVMA space\n", 1312 xycsc->sc_dev.dv_xname); 1313 return (XY_ERR_FAIL); /* XXX: need some sort of 1314 * call-back scheme here? */ 1315 } 1316 1317 /* init iorq and load iopb from it */ 1318 1319 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1320 bp->b_bcount / XYFM_BPS, dbuf, bp); 1321 1322 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1323 1324 /* Instrumentation. */ 1325 disk_busy(&xysc->sc_dk); 1326 1327 return (XY_ERR_AOK); 1328 } 1329 1330 1331 /* 1332 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1333 * if ok. if it fail returns an error code. type is XY_SUB_*. 1334 * 1335 * note: caller frees iorq in all cases except NORM 1336 * 1337 * return value: 1338 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1339 * WAIT: XY_AOK (success), <error-code> (failed) 1340 * POLL: <same as WAIT> 1341 * NOQ : <same as NORM> 1342 * 1343 * there are three sources for i/o requests: 1344 * [1] xystrategy: normal block I/O, using "struct buf" system. 1345 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1346 * [3] open/ioctl: these are I/O requests done in the context of a process, 1347 * and the process should block until they are done. 1348 * 1349 * software state is stored in the iorq structure. each iorq has an 1350 * iopb structure. the hardware understands the iopb structure. 1351 * every command must go through an iopb. a 450 handles one iopb at a 1352 * time, where as a 451 can take them in chains. [the 450 claims it 1353 * can handle chains, but is appears to be buggy...] iopb are allocated 1354 * in DVMA space at boot up time. each disk gets one iopb, and the 1355 * controller gets one (for POLL and WAIT commands). what happens if 1356 * the iopb is busy? for i/o type [1], the buffers are queued at the 1357 * "buff" layer and * picked up later by the interrupt routine. for case 1358 * [2] we can only be blocked if there is a WAIT type I/O request being 1359 * run. since this can only happen when we are crashing, we wait a sec 1360 * and then steal the IOPB. for case [3] the process can sleep 1361 * on the iorq free list until some iopbs are available. 1362 */ 1363 1364 1365 int 1366 xyc_submit_iorq(xycsc, iorq, type) 1367 struct xyc_softc *xycsc; 1368 struct xy_iorq *iorq; 1369 int type; 1370 1371 { 1372 struct xy_iopb *iopb; 1373 u_long iopbaddr; 1374 1375 #ifdef XYC_DEBUG 1376 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1377 xycsc->sc_dev.dv_xname, iorq, type); 1378 #endif 1379 1380 /* first check and see if controller is busy */ 1381 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1382 #ifdef XYC_DEBUG 1383 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1384 #endif 1385 if (type == XY_SUB_NOQ) 1386 return (XY_ERR_FAIL); /* failed */ 1387 switch (type) { 1388 case XY_SUB_NORM: 1389 return XY_ERR_AOK; /* success */ 1390 case XY_SUB_WAIT: 1391 while (iorq->iopb->done == 0) { 1392 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1393 } 1394 return (iorq->errno); 1395 case XY_SUB_POLL: /* steal controller */ 1396 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1397 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1398 panic("xyc_submit_iorq: stuck xyc"); 1399 printf("%s: stole controller\n", 1400 xycsc->sc_dev.dv_xname); 1401 break; 1402 default: 1403 panic("xyc_submit_iorq adding"); 1404 } 1405 } 1406 1407 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1408 if (iopb == NULL) { /* nothing doing? */ 1409 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1410 return(XY_ERR_AOK); 1411 panic("xyc_submit_iorq: xyc_chain failed!"); 1412 } 1413 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1414 1415 XYC_GO(xycsc->xyc, iopbaddr); 1416 1417 /* command now running, wrap it up */ 1418 switch (type) { 1419 case XY_SUB_NORM: 1420 case XY_SUB_NOQ: 1421 return (XY_ERR_AOK); /* success */ 1422 case XY_SUB_WAIT: 1423 while (iorq->iopb->done == 0) { 1424 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1425 } 1426 return (iorq->errno); 1427 case XY_SUB_POLL: 1428 return (xyc_piodriver(xycsc, iorq)); 1429 default: 1430 panic("xyc_submit_iorq wrap up"); 1431 } 1432 panic("xyc_submit_iorq"); 1433 return 0; /* not reached */ 1434 } 1435 1436 1437 /* 1438 * xyc_chain: build a chain. return dvma address of first element in 1439 * the chain. iorq != NULL: means we only want that item on the chain. 1440 */ 1441 1442 struct xy_iopb * 1443 xyc_chain(xycsc, iorq) 1444 struct xyc_softc *xycsc; 1445 struct xy_iorq *iorq; 1446 { 1447 int togo, chain, hand; 1448 struct xy_iopb *iopb, *prev_iopb; 1449 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1450 1451 /* 1452 * promote control IOPB to the top 1453 */ 1454 if (iorq == NULL) { 1455 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1456 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1457 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1458 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1459 } 1460 /* 1461 * special case: if iorq != NULL then we have a POLL or WAIT request. 1462 * we let these take priority and do them first. 1463 */ 1464 if (iorq) { 1465 xycsc->xy_chain[0] = iorq; 1466 iorq->iopb->chen = 0; 1467 return(iorq->iopb); 1468 } 1469 1470 /* 1471 * NORM case: do round robin and maybe chain (if allowed and possible) 1472 */ 1473 1474 chain = 0; 1475 hand = xycsc->xy_hand; 1476 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1477 1478 for (togo = XYC_MAXIOPB ; 1479 togo > 0 ; 1480 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1481 { 1482 1483 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1484 xycsc->iopbase[hand].done) 1485 continue; /* not ready-for-i/o */ 1486 1487 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1488 iopb = xycsc->xy_chain[chain]->iopb; 1489 iopb->chen = 0; 1490 if (chain != 0) { /* adding a link to a chain? */ 1491 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1492 prev_iopb->chen = 1; 1493 prev_iopb->nxtiopb = 0xffff & 1494 dvma_kvtopa(iopb, xycsc->bustype); 1495 } else { /* head of chain */ 1496 iorq = xycsc->xy_chain[chain]; 1497 } 1498 chain++; 1499 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1500 } 1501 return(iorq ? iorq->iopb : NULL); 1502 } 1503 1504 /* 1505 * xyc_piodriver 1506 * 1507 * programmed i/o driver. this function takes over the computer 1508 * and drains off the polled i/o request. it returns the status of the iorq 1509 * the caller is interesting in. 1510 */ 1511 int 1512 xyc_piodriver(xycsc, iorq) 1513 struct xyc_softc *xycsc; 1514 struct xy_iorq *iorq; 1515 1516 { 1517 int nreset = 0; 1518 int retval = 0; 1519 u_long res; 1520 1521 #ifdef XYC_DEBUG 1522 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1523 #endif 1524 1525 while (iorq->iopb->done == 0) { 1526 1527 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1528 1529 /* we expect some progress soon */ 1530 if (res == XY_ERR_FAIL && nreset >= 2) { 1531 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1532 #ifdef XYC_DEBUG 1533 printf("xyc_piodriver: timeout\n"); 1534 #endif 1535 return (XY_ERR_FAIL); 1536 } 1537 if (res == XY_ERR_FAIL) { 1538 if (xyc_reset(xycsc, 0, 1539 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1540 XY_ERR_FAIL, 1541 0) == XY_ERR_FAIL) 1542 return (XY_ERR_FAIL); /* flushes all but POLL 1543 * requests, resets */ 1544 continue; 1545 } 1546 1547 xyc_remove_iorq(xycsc); /* may resubmit request */ 1548 1549 if (iorq->iopb->done == 0) 1550 xyc_start(xycsc, iorq); 1551 } 1552 1553 /* get return value */ 1554 1555 retval = iorq->errno; 1556 1557 #ifdef XYC_DEBUG 1558 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1559 iorq->errno, xyc_e2str(iorq->errno)); 1560 #endif 1561 1562 /* start up any bufs that have queued */ 1563 1564 xyc_start(xycsc, NULL); 1565 1566 return (retval); 1567 } 1568 1569 /* 1570 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1571 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1572 */ 1573 void 1574 xyc_xyreset(xycsc, xysc) 1575 struct xyc_softc *xycsc; 1576 struct xy_softc *xysc; 1577 1578 { 1579 struct xy_iopb tmpiopb; 1580 u_long addr; 1581 int del; 1582 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1583 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1584 xycsc->ciopb->ien = 0; 1585 xycsc->ciopb->com = XYCMD_RST; 1586 xycsc->ciopb->unit = xysc->xy_drive; 1587 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1588 1589 XYC_GO(xycsc->xyc, addr); 1590 1591 del = XYC_RESETUSEC; 1592 while (del > 0) { 1593 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1594 DELAY(1); 1595 del--; 1596 } 1597 1598 if (del <= 0 || xycsc->ciopb->errs) { 1599 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1600 xyc_e2str(xycsc->ciopb->errno)); 1601 del = xycsc->xyc->xyc_rsetup; 1602 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1603 panic("xyc_reset"); 1604 } else { 1605 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1606 } 1607 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1608 } 1609 1610 1611 /* 1612 * xyc_reset: reset everything: requests are marked as errors except 1613 * a polled request (which is resubmitted) 1614 */ 1615 int 1616 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1617 struct xyc_softc *xycsc; 1618 int quiet, error; 1619 struct xy_iorq *blastmode; 1620 struct xy_softc *xysc; 1621 1622 { 1623 int del = 0, lcv, retval = XY_ERR_AOK; 1624 struct xy_iorq *iorq; 1625 1626 /* soft reset hardware */ 1627 1628 if (!quiet) 1629 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1630 del = xycsc->xyc->xyc_rsetup; 1631 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1632 if (del == XY_ERR_FAIL) { 1633 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1634 retval = XY_ERR_FAIL; 1635 } 1636 if (xysc) 1637 xyc_xyreset(xycsc, xysc); 1638 1639 /* fix queues based on "blast-mode" */ 1640 1641 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1642 iorq = &xycsc->reqs[lcv]; 1643 1644 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1645 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1646 XY_STATE(iorq->mode) != XY_SUB_NORM) 1647 /* is it active? */ 1648 continue; 1649 1650 if (blastmode == XY_RSET_ALL || 1651 blastmode != iorq) { 1652 /* failed */ 1653 iorq->errno = error; 1654 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1655 switch (XY_STATE(iorq->mode)) { 1656 case XY_SUB_NORM: 1657 iorq->buf->b_error = EIO; 1658 iorq->buf->b_flags |= B_ERROR; 1659 iorq->buf->b_resid = 1660 iorq->sectcnt * XYFM_BPS; 1661 /* Sun3: map/unmap regardless of B_PHYS */ 1662 dvma_mapout(iorq->dbufbase, 1663 iorq->buf->b_bcount); 1664 (void)BUFQ_GET(&iorq->xy->xyq); 1665 disk_unbusy(&iorq->xy->sc_dk, 1666 (iorq->buf->b_bcount - iorq->buf->b_resid), 1667 (iorq->buf->b_flags & B_READ)); 1668 biodone(iorq->buf); 1669 iorq->mode = XY_SUB_FREE; 1670 break; 1671 case XY_SUB_WAIT: 1672 wakeup(iorq); 1673 case XY_SUB_POLL: 1674 iorq->mode = 1675 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1676 break; 1677 } 1678 1679 } else { 1680 1681 /* resubmit, no need to do anything here */ 1682 } 1683 } 1684 1685 /* 1686 * now, if stuff is waiting, start it. 1687 * since we just reset it should go 1688 */ 1689 xyc_start(xycsc, NULL); 1690 1691 return (retval); 1692 } 1693 1694 /* 1695 * xyc_start: start waiting buffers 1696 */ 1697 1698 void 1699 xyc_start(xycsc, iorq) 1700 struct xyc_softc *xycsc; 1701 struct xy_iorq *iorq; 1702 1703 { 1704 int lcv; 1705 struct xy_softc *xy; 1706 1707 if (iorq == NULL) { 1708 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1709 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1710 if (BUFQ_PEEK(&xy->xyq) == NULL) continue; 1711 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1712 xyc_startbuf(xycsc, xy, BUFQ_PEEK(&xy->xyq)); 1713 } 1714 } 1715 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1716 } 1717 1718 /* 1719 * xyc_remove_iorq: remove "done" IOPB's. 1720 */ 1721 1722 int 1723 xyc_remove_iorq(xycsc) 1724 struct xyc_softc *xycsc; 1725 1726 { 1727 int errno, rq, comm, errs; 1728 struct xyc *xyc = xycsc->xyc; 1729 u_long addr; 1730 struct xy_iopb *iopb; 1731 struct xy_iorq *iorq; 1732 struct buf *bp; 1733 1734 if (xyc->xyc_csr & XYC_DERR) { 1735 /* 1736 * DOUBLE ERROR: should never happen under normal use. This 1737 * error is so bad, you can't even tell which IOPB is bad, so 1738 * we dump them all. 1739 */ 1740 errno = XY_ERR_DERR; 1741 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1742 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1743 printf("%s: soft reset failed!\n", 1744 xycsc->sc_dev.dv_xname); 1745 panic("xyc_remove_iorq: controller DEAD"); 1746 } 1747 return (XY_ERR_AOK); 1748 } 1749 1750 /* 1751 * get iopb that is done, loop down the chain 1752 */ 1753 1754 if (xyc->xyc_csr & XYC_ERR) { 1755 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1756 } 1757 if (xyc->xyc_csr & XYC_IPND) { 1758 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1759 } 1760 1761 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1762 iorq = xycsc->xy_chain[rq]; 1763 if (iorq == NULL) break; /* done ! */ 1764 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1765 continue; /* free, or done */ 1766 iopb = iorq->iopb; 1767 if (iopb->done == 0) 1768 continue; /* not done yet */ 1769 1770 comm = iopb->com; 1771 errs = iopb->errs; 1772 1773 if (errs) 1774 iorq->errno = iopb->errno; 1775 else 1776 iorq->errno = 0; 1777 1778 /* handle non-fatal errors */ 1779 1780 if (errs && 1781 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1782 continue; /* AOK: we resubmitted it */ 1783 1784 1785 /* this iorq is now done (hasn't been restarted or anything) */ 1786 1787 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1788 xyc_perror(iorq, iopb, 0); 1789 1790 /* now, if read/write check to make sure we got all the data 1791 * we needed. (this may not be the case if we got an error in 1792 * the middle of a multisector request). */ 1793 1794 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1795 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1796 /* we just successfully processed a bad144 sector 1797 * note: if we are in bad 144 mode, the pointers have 1798 * been advanced already (see above) and are pointing 1799 * at the bad144 sector. to exit bad144 mode, we 1800 * must advance the pointers 1 sector and issue a new 1801 * request if there are still sectors left to process 1802 * 1803 */ 1804 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1805 1806 /* exit b144 mode */ 1807 iorq->mode = iorq->mode & (~XY_MODE_B144); 1808 1809 if (iorq->sectcnt) { /* more to go! */ 1810 iorq->lasterror = iorq->errno = iopb->errno = 0; 1811 iopb->errs = iopb->done = 0; 1812 iorq->tries = 0; 1813 iopb->scnt = iorq->sectcnt; 1814 iopb->cyl = iorq->blockno / 1815 iorq->xy->sectpercyl; 1816 iopb->head = 1817 (iorq->blockno / iorq->xy->nhead) % 1818 iorq->xy->nhead; 1819 iopb->sect = iorq->blockno % XYFM_BPS; 1820 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1821 iopb->dataa = (addr & 0xffff); 1822 iopb->datar = ((addr & 0xff0000) >> 16); 1823 /* will resubit at end */ 1824 continue; 1825 } 1826 } 1827 /* final cleanup, totally done with this request */ 1828 1829 switch (XY_STATE(iorq->mode)) { 1830 case XY_SUB_NORM: 1831 bp = iorq->buf; 1832 if (errs) { 1833 bp->b_error = EIO; 1834 bp->b_flags |= B_ERROR; 1835 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1836 } else { 1837 bp->b_resid = 0; /* done */ 1838 } 1839 /* Sun3: map/unmap regardless of B_PHYS */ 1840 dvma_mapout(iorq->dbufbase, 1841 iorq->buf->b_bcount); 1842 (void)BUFQ_GET(&iorq->xy->xyq); 1843 disk_unbusy(&iorq->xy->sc_dk, 1844 (bp->b_bcount - bp->b_resid), 1845 (bp->b_flags & B_READ)); 1846 iorq->mode = XY_SUB_FREE; 1847 biodone(bp); 1848 break; 1849 case XY_SUB_WAIT: 1850 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1851 wakeup(iorq); 1852 break; 1853 case XY_SUB_POLL: 1854 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1855 break; 1856 } 1857 } 1858 1859 return (XY_ERR_AOK); 1860 } 1861 1862 /* 1863 * xyc_perror: print error. 1864 * - if still_trying is true: we got an error, retried and got a 1865 * different error. in that case lasterror is the old error, 1866 * and errno is the new one. 1867 * - if still_trying is not true, then if we ever had an error it 1868 * is in lasterror. also, if iorq->errno == 0, then we recovered 1869 * from that error (otherwise iorq->errno == iorq->lasterror). 1870 */ 1871 void 1872 xyc_perror(iorq, iopb, still_trying) 1873 struct xy_iorq *iorq; 1874 struct xy_iopb *iopb; 1875 int still_trying; 1876 1877 { 1878 1879 int error = iorq->lasterror; 1880 1881 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1882 : iorq->xyc->sc_dev.dv_xname); 1883 if (iorq->buf) 1884 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1885 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1886 printf("%s %d/%d/%d: ", 1887 (iopb->com == XYCMD_RD) ? "read" : "write", 1888 iopb->cyl, iopb->head, iopb->sect); 1889 printf("%s", xyc_e2str(error)); 1890 1891 if (still_trying) 1892 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1893 else 1894 if (iorq->errno == 0) 1895 printf(" [recovered in %d tries]", iorq->tries); 1896 1897 printf("\n"); 1898 } 1899 1900 /* 1901 * xyc_error: non-fatal error encountered... recover. 1902 * return AOK if resubmitted, return FAIL if this iopb is done 1903 */ 1904 int 1905 xyc_error(xycsc, iorq, iopb, comm) 1906 struct xyc_softc *xycsc; 1907 struct xy_iorq *iorq; 1908 struct xy_iopb *iopb; 1909 int comm; 1910 1911 { 1912 int errno = iorq->errno; 1913 int erract = xyc_entoact(errno); 1914 int oldmode, advance, i; 1915 1916 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1917 oldmode = iorq->mode; 1918 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1919 /* make xyc_start ignore us */ 1920 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1921 iorq->mode = oldmode; 1922 } 1923 /* check for read/write to a sector in bad144 table if bad: redirect 1924 * request to bad144 area */ 1925 1926 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1927 (iorq->mode & XY_MODE_B144) == 0) { 1928 advance = iorq->sectcnt - iopb->scnt; 1929 XYC_ADVANCE(iorq, advance); 1930 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1931 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1932 iorq->blockno % iorq->xy->nsect)) != -1) { 1933 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1934 * redirect */ 1935 iopb->errno = iopb->done = iopb->errs = 0; 1936 iopb->scnt = 1; 1937 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1938 /* second to last acyl */ 1939 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1940 * standard */ 1941 iopb->head = i / iorq->xy->nhead; 1942 iopb->sect = i % iorq->xy->nhead; 1943 /* will resubmit when we come out of remove_iorq */ 1944 return (XY_ERR_AOK); /* recovered! */ 1945 } 1946 } 1947 1948 /* 1949 * it isn't a bad144 sector, must be real error! see if we can retry 1950 * it? 1951 */ 1952 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1953 xyc_perror(iorq, iopb, 1); /* inform of error state 1954 * change */ 1955 iorq->lasterror = errno; 1956 1957 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1958 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1959 iorq->tries++; 1960 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1961 /* will resubmit at end of remove_iorq */ 1962 return (XY_ERR_AOK); /* recovered! */ 1963 } 1964 1965 /* failed to recover from this error */ 1966 return (XY_ERR_FAIL); 1967 } 1968 1969 /* 1970 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1971 */ 1972 void 1973 xyc_tick(arg) 1974 void *arg; 1975 1976 { 1977 struct xyc_softc *xycsc = arg; 1978 int lcv, s, reset = 0; 1979 1980 /* reduce ttl for each request if one goes to zero, reset xyc */ 1981 s = splbio(); 1982 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1983 if (xycsc->reqs[lcv].mode == 0 || 1984 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1985 continue; 1986 xycsc->reqs[lcv].ttl--; 1987 if (xycsc->reqs[lcv].ttl == 0) 1988 reset = 1; 1989 } 1990 if (reset) { 1991 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1992 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1993 } 1994 splx(s); 1995 1996 /* until next time */ 1997 1998 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1999 } 2000 2001 /* 2002 * xyc_ioctlcmd: this function provides a user level interface to the 2003 * controller via ioctl. this allows "format" programs to be written 2004 * in user code, and is also useful for some debugging. we return 2005 * an error code. called at user priority. 2006 * 2007 * XXX missing a few commands (see the 7053 driver for ideas) 2008 */ 2009 int 2010 xyc_ioctlcmd(xy, dev, xio) 2011 struct xy_softc *xy; 2012 dev_t dev; 2013 struct xd_iocmd *xio; 2014 2015 { 2016 int s, err, rqno; 2017 void * dvmabuf = NULL; 2018 struct xyc_softc *xycsc; 2019 2020 /* check sanity of requested command */ 2021 2022 switch (xio->cmd) { 2023 2024 case XYCMD_NOP: /* no op: everything should be zero */ 2025 if (xio->subfn || xio->dptr || xio->dlen || 2026 xio->block || xio->sectcnt) 2027 return (EINVAL); 2028 break; 2029 2030 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2031 case XYCMD_WR: 2032 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2033 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2034 return (EINVAL); 2035 break; 2036 2037 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2038 return (EINVAL); 2039 2040 break; 2041 2042 default: 2043 return (EINVAL);/* ??? */ 2044 } 2045 2046 /* create DVMA buffer for request if needed */ 2047 2048 if (xio->dlen) { 2049 dvmabuf = dvma_malloc(xio->dlen); 2050 if (xio->cmd == XYCMD_WR) { 2051 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2052 if (err) { 2053 dvma_free(dvmabuf, xio->dlen); 2054 return (err); 2055 } 2056 } 2057 } 2058 /* do it! */ 2059 2060 err = 0; 2061 xycsc = xy->parent; 2062 s = splbio(); 2063 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2064 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2065 if (rqno == XY_ERR_FAIL) { 2066 err = EIO; 2067 goto done; 2068 } 2069 xio->errno = xycsc->ciorq->errno; 2070 xio->tries = xycsc->ciorq->tries; 2071 XYC_DONE(xycsc, err); 2072 2073 if (xio->cmd == XYCMD_RD) 2074 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2075 2076 done: 2077 splx(s); 2078 if (dvmabuf) 2079 dvma_free(dvmabuf, xio->dlen); 2080 return (err); 2081 } 2082 2083 /* 2084 * xyc_e2str: convert error code number into an error string 2085 */ 2086 char * 2087 xyc_e2str(no) 2088 int no; 2089 { 2090 switch (no) { 2091 case XY_ERR_FAIL: 2092 return ("Software fatal error"); 2093 case XY_ERR_DERR: 2094 return ("DOUBLE ERROR"); 2095 case XY_ERR_AOK: 2096 return ("Successful completion"); 2097 case XY_ERR_IPEN: 2098 return("Interrupt pending"); 2099 case XY_ERR_BCFL: 2100 return("Busy conflict"); 2101 case XY_ERR_TIMO: 2102 return("Operation timeout"); 2103 case XY_ERR_NHDR: 2104 return("Header not found"); 2105 case XY_ERR_HARD: 2106 return("Hard ECC error"); 2107 case XY_ERR_ICYL: 2108 return("Illegal cylinder address"); 2109 case XY_ERR_ISEC: 2110 return("Illegal sector address"); 2111 case XY_ERR_SMAL: 2112 return("Last sector too small"); 2113 case XY_ERR_SACK: 2114 return("Slave ACK error (non-existent memory)"); 2115 case XY_ERR_CHER: 2116 return("Cylinder and head/header error"); 2117 case XY_ERR_SRTR: 2118 return("Auto-seek retry successful"); 2119 case XY_ERR_WPRO: 2120 return("Write-protect error"); 2121 case XY_ERR_UIMP: 2122 return("Unimplemented command"); 2123 case XY_ERR_DNRY: 2124 return("Drive not ready"); 2125 case XY_ERR_SZER: 2126 return("Sector count zero"); 2127 case XY_ERR_DFLT: 2128 return("Drive faulted"); 2129 case XY_ERR_ISSZ: 2130 return("Illegal sector size"); 2131 case XY_ERR_SLTA: 2132 return("Self test A"); 2133 case XY_ERR_SLTB: 2134 return("Self test B"); 2135 case XY_ERR_SLTC: 2136 return("Self test C"); 2137 case XY_ERR_SOFT: 2138 return("Soft ECC error"); 2139 case XY_ERR_SFOK: 2140 return("Soft ECC error recovered"); 2141 case XY_ERR_IHED: 2142 return("Illegal head"); 2143 case XY_ERR_DSEQ: 2144 return("Disk sequencer error"); 2145 case XY_ERR_SEEK: 2146 return("Seek error"); 2147 default: 2148 return ("Unknown error"); 2149 } 2150 } 2151 2152 int 2153 xyc_entoact(errno) 2154 2155 int errno; 2156 2157 { 2158 switch (errno) { 2159 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2160 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2161 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2162 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2163 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2164 2165 return(XY_ERA_PROG); /* program error ! */ 2166 2167 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2168 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2169 case XY_ERR_SOFT: 2170 2171 return(XY_ERA_HARD); /* hard error, retry */ 2172 2173 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2174 2175 return(XY_ERA_RSET); /* hard error reset */ 2176 2177 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2178 2179 return(XY_ERA_SOFT); /* an FYI error */ 2180 2181 case XY_ERR_WPRO: 2182 2183 return(XY_ERA_WPRO); /* write protect */ 2184 } 2185 2186 return(XY_ERA_PROG); /* ??? */ 2187 } 2188
Indexes created Mon Sep 29 21:09:56 GMT 2025