xy.c revision 1.31
1 /* $NetBSD: xy.c,v 1.31 2000/06/04 19:15:11 cgd Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: &Id: xy.c,v 1.1 1995/09/25 20:35:14 chuck Exp & 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #undef XYC_DEBUG /* full debug */ 55 #undef XYC_DIAG /* extra sanity checks */ 56 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 57 #define XYC_DIAG /* link in with master DIAG option */ 58 #endif 59 60 #include <sys/param.h> 61 #include <sys/proc.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/file.h> 65 #include <sys/stat.h> 66 #include <sys/ioctl.h> 67 #include <sys/buf.h> 68 #include <sys/uio.h> 69 #include <sys/malloc.h> 70 #include <sys/device.h> 71 #include <sys/disklabel.h> 72 #include <sys/disk.h> 73 #include <sys/syslog.h> 74 #include <sys/dkbad.h> 75 #include <sys/conf.h> 76 77 #include <vm/vm.h> 78 #include <vm/vm_kern.h> 79 80 #include <dev/sun/disklabel.h> 81 82 #include <machine/autoconf.h> 83 #include <machine/dvma.h> 84 85 #include <sun3/dev/xyreg.h> 86 #include <sun3/dev/xyvar.h> 87 #include <sun3/dev/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * Print a complaint when no xy children were specified 93 * in the config file. Better than a link error... 94 * 95 * XXX: Some folks say this driver should be split in two, 96 * but that seems pointless with ONLY one type of child. 97 */ 98 #include "xy.h" 99 #if NXY == 0 100 #error "xyc but no xy?" 101 #endif 102 103 /* 104 * macros 105 */ 106 107 /* 108 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 109 */ 110 #define XYC_GO(XYC, ADDR) { \ 111 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 112 (ADDR) = ((ADDR) >> 8); \ 113 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 114 (ADDR) = ((ADDR) >> 8); \ 115 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 116 (ADDR) = ((ADDR) >> 8); \ 117 (XYC)->xyc_reloc_hi = (ADDR); \ 118 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 119 } 120 121 /* 122 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 123 */ 124 125 #define XYC_DONE(SC,ER) { \ 126 if ((ER) == XY_ERR_AOK) { \ 127 (ER) = (SC)->ciorq->errno; \ 128 (SC)->ciorq->mode = XY_SUB_FREE; \ 129 wakeup((SC)->ciorq); \ 130 } \ 131 } 132 133 /* 134 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 135 */ 136 137 #define XYC_ADVANCE(IORQ, N) { \ 138 if (N) { \ 139 (IORQ)->sectcnt -= (N); \ 140 (IORQ)->blockno += (N); \ 141 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 142 } \ 143 } 144 145 /* 146 * note - addresses you can sleep on: 147 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 148 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 149 */ 150 151 152 /* 153 * function prototypes 154 * "xyc_*" functions are internal, all others are external interfaces 155 */ 156 157 /* internals */ 158 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 159 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 160 char *xyc_e2str __P((int)); 161 int xyc_entoact __P((int)); 162 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 163 struct xy_iopb *, int)); 164 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 165 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 166 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 167 int xyc_remove_iorq __P((struct xyc_softc *)); 168 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 169 struct xy_softc *)); 170 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 171 struct xy_softc *, int, u_long, int, 172 caddr_t, struct buf *)); 173 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 174 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 175 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 176 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 177 void xyc_tick __P((void *)); 178 int xyc_unbusy __P((struct xyc *, int)); 179 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 180 181 /* machine interrupt hook */ 182 int xycintr __P((void *)); 183 184 /* bdevsw, cdevsw */ 185 bdev_decl(xy); 186 cdev_decl(xy); 187 188 /* autoconf */ 189 static int xycmatch __P((struct device *, struct cfdata *, void *)); 190 static void xycattach __P((struct device *, struct device *, void *)); 191 static int xyc_print __P((void *, const char *name)); 192 193 static int xymatch __P((struct device *, struct cfdata *, void *)); 194 static void xyattach __P((struct device *, struct device *, void *)); 195 static void xy_init __P((struct xy_softc *)); 196 197 static void xydummystrat __P((struct buf *)); 198 int xygetdisklabel __P((struct xy_softc *, void *)); 199 200 /* 201 * cfattach's: device driver interface to autoconfig 202 */ 203 204 struct cfattach xyc_ca = { 205 sizeof(struct xyc_softc), xycmatch, xycattach 206 }; 207 208 struct cfattach xy_ca = { 209 sizeof(struct xy_softc), xymatch, xyattach 210 }; 211 212 extern struct cfdriver xy_cd; 213 214 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 215 int driveno; /* unit number */ 216 }; 217 218 /* 219 * dkdriver 220 */ 221 222 struct dkdriver xydkdriver = { xystrategy }; 223 224 /* 225 * start: disk label fix code (XXX) 226 */ 227 228 static void *xy_labeldata; 229 230 static void 231 xydummystrat(bp) 232 struct buf *bp; 233 { 234 if (bp->b_bcount != XYFM_BPS) 235 panic("xydummystrat"); 236 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 237 bp->b_flags |= B_DONE; 238 bp->b_flags &= ~B_BUSY; 239 } 240 241 int 242 xygetdisklabel(xy, b) 243 struct xy_softc *xy; 244 void *b; 245 { 246 char *err; 247 struct sun_disklabel *sdl; 248 249 /* We already have the label data in `b'; setup for dummy strategy */ 250 xy_labeldata = b; 251 252 /* Required parameter for readdisklabel() */ 253 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 254 255 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 256 xydummystrat, 257 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 258 if (err) { 259 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 260 return(XY_ERR_FAIL); 261 } 262 263 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 264 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 265 if (sdl->sl_magic == SUN_DKMAGIC) 266 xy->pcyl = sdl->sl_pcyl; 267 else { 268 printf("%s: WARNING: no `pcyl' in disk label.\n", 269 xy->sc_dev.dv_xname); 270 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 271 xy->sc_dk.dk_label->d_acylinders; 272 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 273 xy->sc_dev.dv_xname, xy->pcyl); 274 } 275 276 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 277 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 278 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 279 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 280 xy->sectpercyl = xy->nhead * xy->nsect; 281 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 282 * sun->bsd */ 283 return(XY_ERR_AOK); 284 } 285 286 /* 287 * end: disk label fix code (XXX) 288 */ 289 290 /* 291 * a u t o c o n f i g f u n c t i o n s 292 */ 293 294 /* 295 * xycmatch: determine if xyc is present or not. we do a 296 * soft reset to detect the xyc. 297 */ 298 static int 299 xycmatch(parent, cf, aux) 300 struct device *parent; 301 struct cfdata *cf; 302 void *aux; 303 { 304 struct confargs *ca = aux; 305 306 /* No default VME address. */ 307 if (ca->ca_paddr == -1) 308 return (0); 309 310 /* Make sure something is there... */ 311 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 312 return (0); 313 314 /* Default interrupt priority. */ 315 if (ca->ca_intpri == -1) 316 ca->ca_intpri = 2; 317 318 return (1); 319 } 320 321 /* 322 * xycattach: attach controller 323 */ 324 static void 325 xycattach(parent, self, aux) 326 struct device *parent, *self; 327 void *aux; 328 { 329 struct xyc_softc *xyc = (void *) self; 330 struct confargs *ca = aux; 331 struct xyc_attach_args xa; 332 int lcv, err, res, pbsz; 333 void *tmp, *tmp2; 334 u_long ultmp; 335 336 /* get addressing and intr level stuff from autoconfig and load it 337 * into our xyc_softc. */ 338 339 xyc->xyc = (struct xyc *) 340 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 341 xyc->bustype = ca->ca_bustype; 342 xyc->ipl = ca->ca_intpri; 343 xyc->vector = ca->ca_intvec; 344 xyc->no_ols = 0; /* XXX should be from config */ 345 346 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 347 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 348 349 /* 350 * allocate and zero buffers 351 * check boundaries of the KVA's ... all IOPBs must reside in 352 * the same 64K region. 353 */ 354 355 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 356 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 357 ultmp = (u_long) tmp; 358 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 359 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 360 dvma_free(tmp2, pbsz); 361 ultmp = (u_long) tmp; 362 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 363 printf("%s: can't alloc IOPB mem in 64K\n", 364 xyc->sc_dev.dv_xname); 365 return; 366 } 367 } 368 bzero(tmp, pbsz); 369 xyc->iopbase = tmp; 370 xyc->dvmaiopb = (struct xy_iopb *) 371 dvma_kvtopa(xyc->iopbase, xyc->bustype); 372 xyc->reqs = (struct xy_iorq *) 373 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 374 if (xyc->reqs == NULL) 375 panic("xyc malloc"); 376 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 377 378 /* 379 * init iorq to iopb pointers, and non-zero fields in the 380 * iopb which never change. 381 */ 382 383 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 384 xyc->xy_chain[lcv] = NULL; 385 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 386 xyc->iopbase[lcv].asr = 1; /* always the same */ 387 xyc->iopbase[lcv].eef = 1; /* always the same */ 388 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 389 xyc->iopbase[lcv].aud = 1; /* always the same */ 390 xyc->iopbase[lcv].relo = 1; /* always the same */ 391 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 392 } 393 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 394 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 395 xyc->xy_hand = 0; 396 397 /* read controller parameters and insure we have a 450/451 */ 398 399 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 400 res = xyc->ciopb->ctyp; 401 XYC_DONE(xyc, err); 402 if (res != XYCT_450) { 403 if (err) 404 printf(": %s: ", xyc_e2str(err)); 405 printf(": doesn't identify as a 450/451\n"); 406 return; 407 } 408 printf(": Xylogics 450/451"); 409 if (xyc->no_ols) 410 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 411 printf("\n"); 412 if (err) { 413 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 414 xyc_e2str(err)); 415 return; 416 } 417 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 418 printf("%s: 24 bit addressing turned off\n", 419 xyc->sc_dev.dv_xname); 420 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 421 printf("to enable 24 bit mode and this driver\n"); 422 return; 423 } 424 425 /* link in interrupt with higher level software */ 426 isr_add_vectored(xycintr, (void *)xyc, 427 ca->ca_intpri, ca->ca_intvec); 428 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 429 xyc->sc_dev.dv_xname, "intr"); 430 431 callout_init(&xyc->sc_tick_ch); 432 433 /* now we must look for disks using autoconfig */ 434 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 435 (void) config_found(self, (void *) &xa, xyc_print); 436 437 /* start the watchdog clock */ 438 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 439 } 440 441 static int 442 xyc_print(aux, name) 443 void *aux; 444 const char *name; 445 { 446 struct xyc_attach_args *xa = aux; 447 448 if (name != NULL) 449 printf("%s: ", name); 450 451 if (xa->driveno != -1) 452 printf(" drive %d", xa->driveno); 453 454 return UNCONF; 455 } 456 457 /* 458 * xymatch: probe for disk. 459 * 460 * note: we almost always say disk is present. this allows us to 461 * spin up and configure a disk after the system is booted (we can 462 * call xyattach!). Also, wire down the relationship between the 463 * xy* and xyc* devices, to simplify boot device identification. 464 */ 465 static int 466 xymatch(parent, cf, aux) 467 struct device *parent; 468 struct cfdata *cf; 469 void *aux; 470 { 471 struct xyc_attach_args *xa = aux; 472 int xy_unit; 473 474 /* Match only on the "wired-down" controller+disk. */ 475 xy_unit = parent->dv_unit * 2 + xa->driveno; 476 if (cf->cf_unit != xy_unit) 477 return (0); 478 479 return (1); 480 } 481 482 /* 483 * xyattach: attach a disk. 484 */ 485 static void 486 xyattach(parent, self, aux) 487 struct device *parent, *self; 488 void *aux; 489 { 490 struct xy_softc *xy = (void *) self; 491 struct xyc_softc *xyc = (void *) parent; 492 struct xyc_attach_args *xa = aux; 493 494 printf("\n"); 495 496 /* 497 * Always re-initialize the disk structure. We want statistics 498 * to start with a clean slate. 499 */ 500 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 501 xy->sc_dk.dk_driver = &xydkdriver; 502 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 503 504 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 505 xy->flags = 0; 506 xy->parent = xyc; 507 508 /* init queue of waiting bufs */ 509 BUFQ_INIT(&xy->xyq); 510 xy->xyrq = &xyc->reqs[xa->driveno]; 511 512 xy->xy_drive = xa->driveno; 513 xyc->sc_drives[xa->driveno] = xy; 514 515 /* Do init work common to attach and open. */ 516 xy_init(xy); 517 } 518 519 /* 520 * end of autoconfig functions 521 */ 522 523 /* 524 * Initialize a disk. This can be called from both autoconf and 525 * also from xyopen/xystrategy. 526 */ 527 static void 528 xy_init(xy) 529 struct xy_softc *xy; 530 { 531 struct xyc_softc *xyc; 532 struct dkbad *dkb; 533 void *dvmabuf; 534 int err, spt, mb, blk, lcv, fullmode, newstate; 535 536 xyc = xy->parent; 537 xy->state = XY_DRIVE_ATTACHING; 538 newstate = XY_DRIVE_UNKNOWN; 539 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 540 dvmabuf = dvma_malloc(XYFM_BPS); 541 542 /* first try and reset the drive */ 543 544 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 545 XYC_DONE(xyc, err); 546 if (err == XY_ERR_DNRY) { 547 printf("%s: drive %d: off-line\n", 548 xy->sc_dev.dv_xname, xy->xy_drive); 549 goto done; 550 } 551 if (err) { 552 printf("%s: ERROR 0x%02x (%s)\n", 553 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 554 goto done; 555 } 556 printf("%s: drive %d ready", 557 xy->sc_dev.dv_xname, xy->xy_drive); 558 559 /* 560 * now set drive parameters (to semi-bogus values) so we can read the 561 * disk label. 562 */ 563 xy->pcyl = xy->ncyl = 1; 564 xy->acyl = 0; 565 xy->nhead = 1; 566 xy->nsect = 1; 567 xy->sectpercyl = 1; 568 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 569 xy->dkb.bt_bad[lcv].bt_cyl = 570 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 571 572 /* read disk label */ 573 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 574 xy->drive_type++) { 575 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 576 dvmabuf, fullmode); 577 XYC_DONE(xyc, err); 578 if (err == XY_ERR_AOK) break; 579 } 580 581 if (err != XY_ERR_AOK) { 582 printf("%s: reading disk label failed: %s\n", 583 xy->sc_dev.dv_xname, xyc_e2str(err)); 584 goto done; 585 } 586 printf("%s: drive type %d\n", 587 xy->sc_dev.dv_xname, xy->drive_type); 588 589 newstate = XY_DRIVE_NOLABEL; 590 591 xy->hw_spt = spt = 0; /* XXX needed ? */ 592 /* Attach the disk: must be before getdisklabel to malloc label */ 593 disk_attach(&xy->sc_dk); 594 595 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 596 goto done; 597 598 /* inform the user of what is up */ 599 printf("%s: <%s>, pcyl %d\n", 600 xy->sc_dev.dv_xname, 601 (char *)dvmabuf, xy->pcyl); 602 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 603 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 604 xy->sc_dev.dv_xname, mb, 605 xy->ncyl, xy->nhead, xy->nsect); 606 607 /* 608 * 450/451 stupidity: the drive type is encoded into the format 609 * of the disk. the drive type in the IOPB must match the drive 610 * type in the format, or you will not be able to do I/O to the 611 * disk (you get header not found errors). if you have two drives 612 * of different sizes that have the same drive type in their 613 * formatting then you are out of luck. 614 * 615 * this problem was corrected in the 753/7053. 616 */ 617 618 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 619 struct xy_softc *oxy; 620 621 oxy = xyc->sc_drives[lcv]; 622 if (oxy == NULL || oxy == xy) continue; 623 if (oxy->drive_type != xy->drive_type) continue; 624 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 625 xy->nhead != oxy->nhead) { 626 printf("%s: %s and %s must be the same size!\n", 627 xyc->sc_dev.dv_xname, 628 xy ->sc_dev.dv_xname, 629 oxy->sc_dev.dv_xname); 630 panic("xy drive size mismatch"); 631 } 632 } 633 634 635 /* now set the real drive parameters! */ 636 blk = (xy->nsect - 1) + 637 ((xy->nhead - 1) * xy->nsect) + 638 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 639 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 640 XYC_DONE(xyc, err); 641 if (err) { 642 printf("%s: write drive size failed: %s\n", 643 xy->sc_dev.dv_xname, xyc_e2str(err)); 644 goto done; 645 } 646 newstate = XY_DRIVE_ONLINE; 647 648 /* 649 * read bad144 table. this table resides on the first sector of the 650 * last track of the disk (i.e. second cyl of "acyl" area). 651 */ 652 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 653 /* last cyl */ 654 (xy->nhead - 1) * xy->nsect; /* last head */ 655 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 656 dvmabuf, fullmode); 657 XYC_DONE(xyc, err); 658 if (err) { 659 printf("%s: reading bad144 failed: %s\n", 660 xy->sc_dev.dv_xname, xyc_e2str(err)); 661 goto done; 662 } 663 664 /* check dkbad for sanity */ 665 dkb = (struct dkbad *) dvmabuf; 666 for (lcv = 0; lcv < 126; lcv++) { 667 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 668 dkb->bt_bad[lcv].bt_cyl == 0) && 669 dkb->bt_bad[lcv].bt_trksec == 0xffff) 670 continue; /* blank */ 671 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 672 break; 673 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 674 break; 675 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 676 break; 677 } 678 if (lcv != 126) { 679 printf("%s: warning: invalid bad144 sector!\n", 680 xy->sc_dev.dv_xname); 681 } else { 682 bcopy(dvmabuf, &xy->dkb, XYFM_BPS); 683 } 684 685 done: 686 xy->state = newstate; 687 dvma_free(dvmabuf, XYFM_BPS); 688 } 689 690 /* 691 * { b , c } d e v s w f u n c t i o n s 692 */ 693 694 /* 695 * xyclose: close device 696 */ 697 int 698 xyclose(dev, flag, fmt, p) 699 dev_t dev; 700 int flag, fmt; 701 struct proc *p; 702 { 703 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 704 int part = DISKPART(dev); 705 706 /* clear mask bits */ 707 708 switch (fmt) { 709 case S_IFCHR: 710 xy->sc_dk.dk_copenmask &= ~(1 << part); 711 break; 712 case S_IFBLK: 713 xy->sc_dk.dk_bopenmask &= ~(1 << part); 714 break; 715 } 716 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 717 718 return 0; 719 } 720 721 /* 722 * xydump: crash dump system 723 */ 724 int 725 xydump(dev, blkno, va, sz) 726 dev_t dev; 727 daddr_t blkno; 728 caddr_t va; 729 size_t sz; 730 { 731 int unit, part; 732 struct xy_softc *xy; 733 734 unit = DISKUNIT(dev); 735 if (unit >= xy_cd.cd_ndevs) 736 return ENXIO; 737 part = DISKPART(dev); 738 739 xy = xy_cd.cd_devs[unit]; 740 741 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 742 'a' + part); 743 744 return ENXIO; 745 746 /* outline: globals: "dumplo" == sector number of partition to start 747 * dump at (convert to physical sector with partition table) 748 * "dumpsize" == size of dump in clicks "physmem" == size of physical 749 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 750 * physmem) 751 * 752 * dump a copy of physical memory to the dump device starting at sector 753 * "dumplo" in the swap partition (make sure > 0). map in pages as 754 * we go. use polled I/O. 755 * 756 * XXX how to handle NON_CONTIG? 757 */ 758 } 759 760 /* 761 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 762 */ 763 int 764 xyioctl(dev, command, addr, flag, p) 765 dev_t dev; 766 u_long command; 767 caddr_t addr; 768 int flag; 769 struct proc *p; 770 771 { 772 struct xy_softc *xy; 773 struct xd_iocmd *xio; 774 int error, s, unit; 775 776 unit = DISKUNIT(dev); 777 778 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 779 return (ENXIO); 780 781 /* switch on ioctl type */ 782 783 switch (command) { 784 case DIOCSBAD: /* set bad144 info */ 785 if ((flag & FWRITE) == 0) 786 return EBADF; 787 s = splbio(); 788 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 789 splx(s); 790 return 0; 791 792 case DIOCGDINFO: /* get disk label */ 793 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 794 return 0; 795 796 case DIOCGPART: /* get partition info */ 797 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 798 ((struct partinfo *) addr)->part = 799 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 800 return 0; 801 802 case DIOCSDINFO: /* set disk label */ 803 if ((flag & FWRITE) == 0) 804 return EBADF; 805 error = setdisklabel(xy->sc_dk.dk_label, 806 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 807 xy->sc_dk.dk_cpulabel); 808 if (error == 0) { 809 if (xy->state == XY_DRIVE_NOLABEL) 810 xy->state = XY_DRIVE_ONLINE; 811 } 812 return error; 813 814 case DIOCWLABEL: /* change write status of disk label */ 815 if ((flag & FWRITE) == 0) 816 return EBADF; 817 if (*(int *) addr) 818 xy->flags |= XY_WLABEL; 819 else 820 xy->flags &= ~XY_WLABEL; 821 return 0; 822 823 case DIOCWDINFO: /* write disk label */ 824 if ((flag & FWRITE) == 0) 825 return EBADF; 826 error = setdisklabel(xy->sc_dk.dk_label, 827 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 828 xy->sc_dk.dk_cpulabel); 829 if (error == 0) { 830 if (xy->state == XY_DRIVE_NOLABEL) 831 xy->state = XY_DRIVE_ONLINE; 832 833 /* Simulate opening partition 0 so write succeeds. */ 834 xy->sc_dk.dk_openmask |= (1 << 0); 835 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 836 xystrategy, xy->sc_dk.dk_label, 837 xy->sc_dk.dk_cpulabel); 838 xy->sc_dk.dk_openmask = 839 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 840 } 841 return error; 842 843 case DIOSXDCMD: 844 xio = (struct xd_iocmd *) addr; 845 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 846 return (error); 847 return (xyc_ioctlcmd(xy, dev, xio)); 848 849 default: 850 return ENOTTY; 851 } 852 } 853 854 /* 855 * xyopen: open drive 856 */ 857 int 858 xyopen(dev, flag, fmt, p) 859 dev_t dev; 860 int flag, fmt; 861 struct proc *p; 862 { 863 int err, unit, part, s; 864 struct xy_softc *xy; 865 866 /* first, could it be a valid target? */ 867 unit = DISKUNIT(dev); 868 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 869 return (ENXIO); 870 part = DISKPART(dev); 871 err = 0; 872 873 /* 874 * If some other processing is doing init, sleep. 875 */ 876 s = splbio(); 877 while (xy->state == XY_DRIVE_ATTACHING) { 878 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 879 err = EINTR; 880 goto done; 881 } 882 } 883 /* Do we need to init the drive? */ 884 if (xy->state == XY_DRIVE_UNKNOWN) { 885 xy_init(xy); 886 wakeup(&xy->state); 887 } 888 /* Was the init successful? */ 889 if (xy->state == XY_DRIVE_UNKNOWN) { 890 err = EIO; 891 goto done; 892 } 893 894 /* check for partition */ 895 if (part != RAW_PART && 896 (part >= xy->sc_dk.dk_label->d_npartitions || 897 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 898 err = ENXIO; 899 goto done; 900 } 901 902 /* set open masks */ 903 switch (fmt) { 904 case S_IFCHR: 905 xy->sc_dk.dk_copenmask |= (1 << part); 906 break; 907 case S_IFBLK: 908 xy->sc_dk.dk_bopenmask |= (1 << part); 909 break; 910 } 911 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 912 913 done: 914 splx(s); 915 return (err); 916 } 917 918 int 919 xyread(dev, uio, flags) 920 dev_t dev; 921 struct uio *uio; 922 int flags; 923 { 924 925 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 926 } 927 928 int 929 xywrite(dev, uio, flags) 930 dev_t dev; 931 struct uio *uio; 932 int flags; 933 { 934 935 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 936 } 937 938 939 /* 940 * xysize: return size of a partition for a dump 941 */ 942 943 int 944 xysize(dev) 945 dev_t dev; 946 947 { 948 struct xy_softc *xysc; 949 int unit, part, size, omask; 950 951 /* valid unit? */ 952 unit = DISKUNIT(dev); 953 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 954 return (-1); 955 956 part = DISKPART(dev); 957 omask = xysc->sc_dk.dk_openmask & (1 << part); 958 959 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 960 return (-1); 961 962 /* do it */ 963 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 964 size = -1; /* only give valid size for swap partitions */ 965 else 966 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 967 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 968 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 969 return (-1); 970 return (size); 971 } 972 973 /* 974 * xystrategy: buffering system interface to xy. 975 */ 976 void 977 xystrategy(bp) 978 struct buf *bp; 979 980 { 981 struct xy_softc *xy; 982 int s, unit; 983 struct disklabel *lp; 984 daddr_t blkno; 985 986 unit = DISKUNIT(bp->b_dev); 987 988 /* check for live device */ 989 990 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 991 bp->b_blkno < 0 || 992 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 993 bp->b_error = EINVAL; 994 goto bad; 995 } 996 997 /* There should always be an open first. */ 998 if (xy->state == XY_DRIVE_UNKNOWN) { 999 bp->b_error = EIO; 1000 goto bad; 1001 } 1002 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1003 /* no I/O to unlabeled disks, unless raw partition */ 1004 bp->b_error = EIO; 1005 goto bad; 1006 } 1007 /* short circuit zero length request */ 1008 1009 if (bp->b_bcount == 0) 1010 goto done; 1011 1012 /* check bounds with label (disksubr.c). Determine the size of the 1013 * transfer, and make sure it is within the boundaries of the 1014 * partition. Adjust transfer if needed, and signal errors or early 1015 * completion. */ 1016 1017 lp = xy->sc_dk.dk_label; 1018 1019 if (bounds_check_with_label(bp, lp, 1020 (xy->flags & XY_WLABEL) != 0) <= 0) 1021 goto done; 1022 1023 /* 1024 * Now convert the block number to absolute and put it in 1025 * terms of the device's logical block size. 1026 */ 1027 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1028 if (DISKPART(bp->b_dev) != RAW_PART) 1029 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1030 1031 bp->b_rawblkno = blkno; 1032 1033 /* 1034 * now we know we have a valid buf structure that we need to do I/O 1035 * on. 1036 */ 1037 1038 s = splbio(); /* protect the queues */ 1039 1040 disksort_blkno(&xy->xyq, bp); /* XXX disksort_cylinder */ 1041 1042 /* start 'em up */ 1043 1044 xyc_start(xy->parent, NULL); 1045 1046 /* done! */ 1047 1048 splx(s); 1049 return; 1050 1051 bad: /* tells upper layers we have an error */ 1052 bp->b_flags |= B_ERROR; 1053 done: /* tells upper layers we are done with this 1054 * buf */ 1055 bp->b_resid = bp->b_bcount; 1056 biodone(bp); 1057 } 1058 /* 1059 * end of {b,c}devsw functions 1060 */ 1061 1062 /* 1063 * i n t e r r u p t f u n c t i o n 1064 * 1065 * xycintr: hardware interrupt. 1066 */ 1067 int 1068 xycintr(v) 1069 void *v; 1070 1071 { 1072 struct xyc_softc *xycsc = v; 1073 1074 /* kick the event counter */ 1075 xycsc->sc_intrcnt.ev_count++; 1076 1077 /* remove as many done IOPBs as possible */ 1078 xyc_remove_iorq(xycsc); 1079 1080 /* start any iorq's already waiting */ 1081 xyc_start(xycsc, NULL); 1082 1083 return (1); 1084 } 1085 /* 1086 * end of interrupt function 1087 */ 1088 1089 /* 1090 * i n t e r n a l f u n c t i o n s 1091 */ 1092 1093 /* 1094 * xyc_rqinit: fill out the fields of an I/O request 1095 */ 1096 1097 inline void 1098 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1099 struct xy_iorq *rq; 1100 struct xyc_softc *xyc; 1101 struct xy_softc *xy; 1102 int md; 1103 u_long blk; 1104 int cnt; 1105 caddr_t db; 1106 struct buf *bp; 1107 { 1108 rq->xyc = xyc; 1109 rq->xy = xy; 1110 rq->ttl = XYC_MAXTTL + 10; 1111 rq->mode = md; 1112 rq->tries = rq->errno = rq->lasterror = 0; 1113 rq->blockno = blk; 1114 rq->sectcnt = cnt; 1115 rq->dbuf = rq->dbufbase = db; 1116 rq->buf = bp; 1117 } 1118 1119 /* 1120 * xyc_rqtopb: load up an IOPB based on an iorq 1121 */ 1122 1123 void 1124 xyc_rqtopb(iorq, iopb, cmd, subfun) 1125 struct xy_iorq *iorq; 1126 struct xy_iopb *iopb; 1127 int cmd, subfun; 1128 1129 { 1130 u_long block, dp; 1131 1132 /* normal IOPB case, standard stuff */ 1133 1134 /* chain bit handled later */ 1135 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1136 iopb->com = cmd; 1137 iopb->errno = 0; 1138 iopb->errs = 0; 1139 iopb->done = 0; 1140 if (iorq->xy) { 1141 iopb->unit = iorq->xy->xy_drive; 1142 iopb->dt = iorq->xy->drive_type; 1143 } else { 1144 iopb->unit = 0; 1145 iopb->dt = 0; 1146 } 1147 block = iorq->blockno; 1148 if (iorq->xy == NULL || block == 0) { 1149 iopb->sect = iopb->head = iopb->cyl = 0; 1150 } else { 1151 iopb->sect = block % iorq->xy->nsect; 1152 block = block / iorq->xy->nsect; 1153 iopb->head = block % iorq->xy->nhead; 1154 block = block / iorq->xy->nhead; 1155 iopb->cyl = block; 1156 } 1157 iopb->scnt = iorq->sectcnt; 1158 if (iorq->dbuf == NULL) { 1159 iopb->dataa = 0; 1160 iopb->datar = 0; 1161 } else { 1162 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1163 iopb->dataa = (dp & 0xffff); 1164 iopb->datar = ((dp & 0xff0000) >> 16); 1165 } 1166 iopb->subfn = subfun; 1167 } 1168 1169 1170 /* 1171 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1172 */ 1173 1174 int 1175 xyc_unbusy(xyc, del) 1176 1177 struct xyc *xyc; 1178 int del; 1179 1180 { 1181 while (del-- > 0) { 1182 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1183 break; 1184 DELAY(1); 1185 } 1186 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1187 } 1188 1189 /* 1190 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1191 * note that NORM requests are handled seperately. 1192 */ 1193 int 1194 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1195 struct xyc_softc *xycsc; 1196 int cmd, subfn, unit, block, scnt; 1197 char *dptr; 1198 int fullmode; 1199 { 1200 struct xy_iorq *iorq = xycsc->ciorq; 1201 struct xy_iopb *iopb = xycsc->ciopb; 1202 int submode = XY_STATE(fullmode); 1203 1204 /* 1205 * is someone else using the control iopq wait for it if we can 1206 */ 1207 start: 1208 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1209 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1210 return(XY_ERR_FAIL); 1211 goto start; 1212 } 1213 1214 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1215 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1216 iorq->mode = XY_SUB_FREE; 1217 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1218 } 1219 1220 /* init iorq/iopb */ 1221 1222 xyc_rqinit(iorq, xycsc, 1223 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1224 fullmode, block, scnt, dptr, NULL); 1225 1226 /* load IOPB from iorq */ 1227 1228 xyc_rqtopb(iorq, iopb, cmd, subfn); 1229 1230 /* submit it for processing */ 1231 1232 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1233 1234 return(XY_ERR_AOK); 1235 } 1236 1237 /* 1238 * xyc_startbuf 1239 * start a buffer for running 1240 */ 1241 1242 int 1243 xyc_startbuf(xycsc, xysc, bp) 1244 struct xyc_softc *xycsc; 1245 struct xy_softc *xysc; 1246 struct buf *bp; 1247 1248 { 1249 int partno; 1250 struct xy_iorq *iorq; 1251 struct xy_iopb *iopb; 1252 u_long block; 1253 caddr_t dbuf; 1254 1255 iorq = xysc->xyrq; 1256 iopb = iorq->iopb; 1257 1258 /* get buf */ 1259 1260 if (bp == NULL) 1261 panic("xyc_startbuf null buf"); 1262 1263 partno = DISKPART(bp->b_dev); 1264 #ifdef XYC_DEBUG 1265 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1266 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1267 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1268 bp->b_bcount, bp->b_data); 1269 #endif 1270 1271 /* 1272 * load request. 1273 * 1274 * also, note that there are two kinds of buf structures, those with 1275 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1276 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1277 * buffer which has already been mapped into DVMA space. (Not on sun3) 1278 * However, if B_PHYS is not set, then the buffer is a normal system 1279 * buffer which does *not* live in DVMA space. In that case we call 1280 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1281 * 1282 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1283 * as mapped into DVMA space, where as the bp->b_data points to its 1284 * non-DVMA mapping. 1285 * 1286 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1287 * into dvma space, only that it was remapped into the kernel. 1288 * We ALWAYS have to remap the kernel buf into DVMA space. 1289 * (It is done inexpensively, using whole segments!) 1290 */ 1291 1292 block = bp->b_rawblkno; 1293 1294 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1295 if (dbuf == NULL) { /* out of DVMA space */ 1296 printf("%s: warning: out of DVMA space\n", 1297 xycsc->sc_dev.dv_xname); 1298 return (XY_ERR_FAIL); /* XXX: need some sort of 1299 * call-back scheme here? */ 1300 } 1301 1302 /* init iorq and load iopb from it */ 1303 1304 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1305 bp->b_bcount / XYFM_BPS, dbuf, bp); 1306 1307 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1308 1309 /* Instrumentation. */ 1310 disk_busy(&xysc->sc_dk); 1311 1312 return (XY_ERR_AOK); 1313 } 1314 1315 1316 /* 1317 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1318 * if ok. if it fail returns an error code. type is XY_SUB_*. 1319 * 1320 * note: caller frees iorq in all cases except NORM 1321 * 1322 * return value: 1323 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1324 * WAIT: XY_AOK (success), <error-code> (failed) 1325 * POLL: <same as WAIT> 1326 * NOQ : <same as NORM> 1327 * 1328 * there are three sources for i/o requests: 1329 * [1] xystrategy: normal block I/O, using "struct buf" system. 1330 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1331 * [3] open/ioctl: these are I/O requests done in the context of a process, 1332 * and the process should block until they are done. 1333 * 1334 * software state is stored in the iorq structure. each iorq has an 1335 * iopb structure. the hardware understands the iopb structure. 1336 * every command must go through an iopb. a 450 handles one iopb at a 1337 * time, where as a 451 can take them in chains. [the 450 claims it 1338 * can handle chains, but is appears to be buggy...] iopb are allocated 1339 * in DVMA space at boot up time. each disk gets one iopb, and the 1340 * controller gets one (for POLL and WAIT commands). what happens if 1341 * the iopb is busy? for i/o type [1], the buffers are queued at the 1342 * "buff" layer and * picked up later by the interrupt routine. for case 1343 * [2] we can only be blocked if there is a WAIT type I/O request being 1344 * run. since this can only happen when we are crashing, we wait a sec 1345 * and then steal the IOPB. for case [3] the process can sleep 1346 * on the iorq free list until some iopbs are avaliable. 1347 */ 1348 1349 1350 int 1351 xyc_submit_iorq(xycsc, iorq, type) 1352 struct xyc_softc *xycsc; 1353 struct xy_iorq *iorq; 1354 int type; 1355 1356 { 1357 struct xy_iopb *iopb; 1358 u_long iopbaddr; 1359 1360 #ifdef XYC_DEBUG 1361 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1362 xycsc->sc_dev.dv_xname, iorq, type); 1363 #endif 1364 1365 /* first check and see if controller is busy */ 1366 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1367 #ifdef XYC_DEBUG 1368 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1369 #endif 1370 if (type == XY_SUB_NOQ) 1371 return (XY_ERR_FAIL); /* failed */ 1372 switch (type) { 1373 case XY_SUB_NORM: 1374 return XY_ERR_AOK; /* success */ 1375 case XY_SUB_WAIT: 1376 while (iorq->iopb->done == 0) { 1377 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1378 } 1379 return (iorq->errno); 1380 case XY_SUB_POLL: /* steal controller */ 1381 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1382 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1383 panic("xyc_submit_iorq: stuck xyc"); 1384 printf("%s: stole controller\n", 1385 xycsc->sc_dev.dv_xname); 1386 break; 1387 default: 1388 panic("xyc_submit_iorq adding"); 1389 } 1390 } 1391 1392 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1393 if (iopb == NULL) { /* nothing doing? */ 1394 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1395 return(XY_ERR_AOK); 1396 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1397 } 1398 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1399 1400 XYC_GO(xycsc->xyc, iopbaddr); 1401 1402 /* command now running, wrap it up */ 1403 switch (type) { 1404 case XY_SUB_NORM: 1405 case XY_SUB_NOQ: 1406 return (XY_ERR_AOK); /* success */ 1407 case XY_SUB_WAIT: 1408 while (iorq->iopb->done == 0) { 1409 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1410 } 1411 return (iorq->errno); 1412 case XY_SUB_POLL: 1413 return (xyc_piodriver(xycsc, iorq)); 1414 default: 1415 panic("xyc_submit_iorq wrap up"); 1416 } 1417 panic("xyc_submit_iorq"); 1418 return 0; /* not reached */ 1419 } 1420 1421 1422 /* 1423 * xyc_chain: build a chain. return dvma address of first element in 1424 * the chain. iorq != NULL: means we only want that item on the chain. 1425 */ 1426 1427 struct xy_iopb * 1428 xyc_chain(xycsc, iorq) 1429 struct xyc_softc *xycsc; 1430 struct xy_iorq *iorq; 1431 { 1432 int togo, chain, hand; 1433 struct xy_iopb *iopb, *prev_iopb; 1434 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1435 1436 /* 1437 * promote control IOPB to the top 1438 */ 1439 if (iorq == NULL) { 1440 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1441 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1442 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1443 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1444 } 1445 /* 1446 * special case: if iorq != NULL then we have a POLL or WAIT request. 1447 * we let these take priority and do them first. 1448 */ 1449 if (iorq) { 1450 xycsc->xy_chain[0] = iorq; 1451 iorq->iopb->chen = 0; 1452 return(iorq->iopb); 1453 } 1454 1455 /* 1456 * NORM case: do round robin and maybe chain (if allowed and possible) 1457 */ 1458 1459 chain = 0; 1460 hand = xycsc->xy_hand; 1461 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1462 1463 for (togo = XYC_MAXIOPB ; 1464 togo > 0 ; 1465 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1466 { 1467 1468 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1469 xycsc->iopbase[hand].done) 1470 continue; /* not ready-for-i/o */ 1471 1472 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1473 iopb = xycsc->xy_chain[chain]->iopb; 1474 iopb->chen = 0; 1475 if (chain != 0) { /* adding a link to a chain? */ 1476 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1477 prev_iopb->chen = 1; 1478 prev_iopb->nxtiopb = 0xffff & 1479 dvma_kvtopa(iopb, xycsc->bustype); 1480 } else { /* head of chain */ 1481 iorq = xycsc->xy_chain[chain]; 1482 } 1483 chain++; 1484 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1485 } 1486 return(iorq ? iorq->iopb : NULL); 1487 } 1488 1489 /* 1490 * xyc_piodriver 1491 * 1492 * programmed i/o driver. this function takes over the computer 1493 * and drains off the polled i/o request. it returns the status of the iorq 1494 * the caller is interesting in. 1495 */ 1496 int 1497 xyc_piodriver(xycsc, iorq) 1498 struct xyc_softc *xycsc; 1499 struct xy_iorq *iorq; 1500 1501 { 1502 int nreset = 0; 1503 int retval = 0; 1504 u_long res; 1505 1506 #ifdef XYC_DEBUG 1507 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1508 #endif 1509 1510 while (iorq->iopb->done == 0) { 1511 1512 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1513 1514 /* we expect some progress soon */ 1515 if (res == XY_ERR_FAIL && nreset >= 2) { 1516 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1517 #ifdef XYC_DEBUG 1518 printf("xyc_piodriver: timeout\n"); 1519 #endif 1520 return (XY_ERR_FAIL); 1521 } 1522 if (res == XY_ERR_FAIL) { 1523 if (xyc_reset(xycsc, 0, 1524 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1525 XY_ERR_FAIL, 1526 0) == XY_ERR_FAIL) 1527 return (XY_ERR_FAIL); /* flushes all but POLL 1528 * requests, resets */ 1529 continue; 1530 } 1531 1532 xyc_remove_iorq(xycsc); /* may resubmit request */ 1533 1534 if (iorq->iopb->done == 0) 1535 xyc_start(xycsc, iorq); 1536 } 1537 1538 /* get return value */ 1539 1540 retval = iorq->errno; 1541 1542 #ifdef XYC_DEBUG 1543 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1544 iorq->errno, xyc_e2str(iorq->errno)); 1545 #endif 1546 1547 /* start up any bufs that have queued */ 1548 1549 xyc_start(xycsc, NULL); 1550 1551 return (retval); 1552 } 1553 1554 /* 1555 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1556 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1557 */ 1558 void 1559 xyc_xyreset(xycsc, xysc) 1560 struct xyc_softc *xycsc; 1561 struct xy_softc *xysc; 1562 1563 { 1564 struct xy_iopb tmpiopb; 1565 u_long addr; 1566 int del; 1567 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1568 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1569 xycsc->ciopb->ien = 0; 1570 xycsc->ciopb->com = XYCMD_RST; 1571 xycsc->ciopb->unit = xysc->xy_drive; 1572 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1573 1574 XYC_GO(xycsc->xyc, addr); 1575 1576 del = XYC_RESETUSEC; 1577 while (del > 0) { 1578 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1579 DELAY(1); 1580 del--; 1581 } 1582 1583 if (del <= 0 || xycsc->ciopb->errs) { 1584 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1585 xyc_e2str(xycsc->ciopb->errno)); 1586 del = xycsc->xyc->xyc_rsetup; 1587 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1588 panic("xyc_reset"); 1589 } else { 1590 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1591 } 1592 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1593 } 1594 1595 1596 /* 1597 * xyc_reset: reset everything: requests are marked as errors except 1598 * a polled request (which is resubmitted) 1599 */ 1600 int 1601 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1602 struct xyc_softc *xycsc; 1603 int quiet, error; 1604 struct xy_iorq *blastmode; 1605 struct xy_softc *xysc; 1606 1607 { 1608 int del = 0, lcv, retval = XY_ERR_AOK; 1609 struct xy_iorq *iorq; 1610 1611 /* soft reset hardware */ 1612 1613 if (!quiet) 1614 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1615 del = xycsc->xyc->xyc_rsetup; 1616 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1617 if (del == XY_ERR_FAIL) { 1618 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1619 retval = XY_ERR_FAIL; 1620 } 1621 if (xysc) 1622 xyc_xyreset(xycsc, xysc); 1623 1624 /* fix queues based on "blast-mode" */ 1625 1626 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1627 iorq = &xycsc->reqs[lcv]; 1628 1629 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1630 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1631 XY_STATE(iorq->mode) != XY_SUB_NORM) 1632 /* is it active? */ 1633 continue; 1634 1635 if (blastmode == XY_RSET_ALL || 1636 blastmode != iorq) { 1637 /* failed */ 1638 iorq->errno = error; 1639 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1640 switch (XY_STATE(iorq->mode)) { 1641 case XY_SUB_NORM: 1642 iorq->buf->b_error = EIO; 1643 iorq->buf->b_flags |= B_ERROR; 1644 iorq->buf->b_resid = 1645 iorq->sectcnt * XYFM_BPS; 1646 /* Sun3: map/unmap regardless of B_PHYS */ 1647 dvma_mapout(iorq->dbufbase, 1648 iorq->buf->b_bcount); 1649 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1650 disk_unbusy(&iorq->xy->sc_dk, 1651 (iorq->buf->b_bcount - 1652 iorq->buf->b_resid)); 1653 biodone(iorq->buf); 1654 iorq->mode = XY_SUB_FREE; 1655 break; 1656 case XY_SUB_WAIT: 1657 wakeup(iorq); 1658 case XY_SUB_POLL: 1659 iorq->mode = 1660 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1661 break; 1662 } 1663 1664 } else { 1665 1666 /* resubmit, no need to do anything here */ 1667 } 1668 } 1669 1670 /* 1671 * now, if stuff is waiting, start it. 1672 * since we just reset it should go 1673 */ 1674 xyc_start(xycsc, NULL); 1675 1676 return (retval); 1677 } 1678 1679 /* 1680 * xyc_start: start waiting buffers 1681 */ 1682 1683 void 1684 xyc_start(xycsc, iorq) 1685 struct xyc_softc *xycsc; 1686 struct xy_iorq *iorq; 1687 1688 { 1689 int lcv; 1690 struct xy_softc *xy; 1691 1692 if (iorq == NULL) { 1693 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1694 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1695 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1696 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1697 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1698 } 1699 } 1700 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1701 } 1702 1703 /* 1704 * xyc_remove_iorq: remove "done" IOPB's. 1705 */ 1706 1707 int 1708 xyc_remove_iorq(xycsc) 1709 struct xyc_softc *xycsc; 1710 1711 { 1712 int errno, rq, comm, errs; 1713 struct xyc *xyc = xycsc->xyc; 1714 u_long addr; 1715 struct xy_iopb *iopb; 1716 struct xy_iorq *iorq; 1717 struct buf *bp; 1718 1719 if (xyc->xyc_csr & XYC_DERR) { 1720 /* 1721 * DOUBLE ERROR: should never happen under normal use. This 1722 * error is so bad, you can't even tell which IOPB is bad, so 1723 * we dump them all. 1724 */ 1725 errno = XY_ERR_DERR; 1726 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1727 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1728 printf("%s: soft reset failed!\n", 1729 xycsc->sc_dev.dv_xname); 1730 panic("xyc_remove_iorq: controller DEAD"); 1731 } 1732 return (XY_ERR_AOK); 1733 } 1734 1735 /* 1736 * get iopb that is done, loop down the chain 1737 */ 1738 1739 if (xyc->xyc_csr & XYC_ERR) { 1740 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1741 } 1742 if (xyc->xyc_csr & XYC_IPND) { 1743 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1744 } 1745 1746 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1747 iorq = xycsc->xy_chain[rq]; 1748 if (iorq == NULL) break; /* done ! */ 1749 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1750 continue; /* free, or done */ 1751 iopb = iorq->iopb; 1752 if (iopb->done == 0) 1753 continue; /* not done yet */ 1754 1755 comm = iopb->com; 1756 errs = iopb->errs; 1757 1758 if (errs) 1759 iorq->errno = iopb->errno; 1760 else 1761 iorq->errno = 0; 1762 1763 /* handle non-fatal errors */ 1764 1765 if (errs && 1766 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1767 continue; /* AOK: we resubmitted it */ 1768 1769 1770 /* this iorq is now done (hasn't been restarted or anything) */ 1771 1772 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1773 xyc_perror(iorq, iopb, 0); 1774 1775 /* now, if read/write check to make sure we got all the data 1776 * we needed. (this may not be the case if we got an error in 1777 * the middle of a multisector request). */ 1778 1779 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1780 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1781 /* we just successfully processed a bad144 sector 1782 * note: if we are in bad 144 mode, the pointers have 1783 * been advanced already (see above) and are pointing 1784 * at the bad144 sector. to exit bad144 mode, we 1785 * must advance the pointers 1 sector and issue a new 1786 * request if there are still sectors left to process 1787 * 1788 */ 1789 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1790 1791 /* exit b144 mode */ 1792 iorq->mode = iorq->mode & (~XY_MODE_B144); 1793 1794 if (iorq->sectcnt) { /* more to go! */ 1795 iorq->lasterror = iorq->errno = iopb->errno = 0; 1796 iopb->errs = iopb->done = 0; 1797 iorq->tries = 0; 1798 iopb->scnt = iorq->sectcnt; 1799 iopb->cyl = iorq->blockno / 1800 iorq->xy->sectpercyl; 1801 iopb->head = 1802 (iorq->blockno / iorq->xy->nhead) % 1803 iorq->xy->nhead; 1804 iopb->sect = iorq->blockno % XYFM_BPS; 1805 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1806 iopb->dataa = (addr & 0xffff); 1807 iopb->datar = ((addr & 0xff0000) >> 16); 1808 /* will resubit at end */ 1809 continue; 1810 } 1811 } 1812 /* final cleanup, totally done with this request */ 1813 1814 switch (XY_STATE(iorq->mode)) { 1815 case XY_SUB_NORM: 1816 bp = iorq->buf; 1817 if (errs) { 1818 bp->b_error = EIO; 1819 bp->b_flags |= B_ERROR; 1820 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1821 } else { 1822 bp->b_resid = 0; /* done */ 1823 } 1824 /* Sun3: map/unmap regardless of B_PHYS */ 1825 dvma_mapout(iorq->dbufbase, 1826 iorq->buf->b_bcount); 1827 BUFQ_REMOVE(&iorq->xy->xyq, bp); 1828 disk_unbusy(&iorq->xy->sc_dk, 1829 (bp->b_bcount - bp->b_resid)); 1830 iorq->mode = XY_SUB_FREE; 1831 biodone(bp); 1832 break; 1833 case XY_SUB_WAIT: 1834 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1835 wakeup(iorq); 1836 break; 1837 case XY_SUB_POLL: 1838 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1839 break; 1840 } 1841 } 1842 1843 return (XY_ERR_AOK); 1844 } 1845 1846 /* 1847 * xyc_perror: print error. 1848 * - if still_trying is true: we got an error, retried and got a 1849 * different error. in that case lasterror is the old error, 1850 * and errno is the new one. 1851 * - if still_trying is not true, then if we ever had an error it 1852 * is in lasterror. also, if iorq->errno == 0, then we recovered 1853 * from that error (otherwise iorq->errno == iorq->lasterror). 1854 */ 1855 void 1856 xyc_perror(iorq, iopb, still_trying) 1857 struct xy_iorq *iorq; 1858 struct xy_iopb *iopb; 1859 int still_trying; 1860 1861 { 1862 1863 int error = iorq->lasterror; 1864 1865 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1866 : iorq->xyc->sc_dev.dv_xname); 1867 if (iorq->buf) 1868 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1869 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1870 printf("%s %d/%d/%d: ", 1871 (iopb->com == XYCMD_RD) ? "read" : "write", 1872 iopb->cyl, iopb->head, iopb->sect); 1873 printf("%s", xyc_e2str(error)); 1874 1875 if (still_trying) 1876 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1877 else 1878 if (iorq->errno == 0) 1879 printf(" [recovered in %d tries]", iorq->tries); 1880 1881 printf("\n"); 1882 } 1883 1884 /* 1885 * xyc_error: non-fatal error encountered... recover. 1886 * return AOK if resubmitted, return FAIL if this iopb is done 1887 */ 1888 int 1889 xyc_error(xycsc, iorq, iopb, comm) 1890 struct xyc_softc *xycsc; 1891 struct xy_iorq *iorq; 1892 struct xy_iopb *iopb; 1893 int comm; 1894 1895 { 1896 int errno = iorq->errno; 1897 int erract = xyc_entoact(errno); 1898 int oldmode, advance, i; 1899 1900 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1901 oldmode = iorq->mode; 1902 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1903 /* make xyc_start ignore us */ 1904 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1905 iorq->mode = oldmode; 1906 } 1907 /* check for read/write to a sector in bad144 table if bad: redirect 1908 * request to bad144 area */ 1909 1910 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1911 (iorq->mode & XY_MODE_B144) == 0) { 1912 advance = iorq->sectcnt - iopb->scnt; 1913 XYC_ADVANCE(iorq, advance); 1914 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1915 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1916 iorq->blockno % iorq->xy->nsect)) != -1) { 1917 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1918 * redirect */ 1919 iopb->errno = iopb->done = iopb->errs = 0; 1920 iopb->scnt = 1; 1921 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1922 /* second to last acyl */ 1923 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1924 * standard */ 1925 iopb->head = i / iorq->xy->nhead; 1926 iopb->sect = i % iorq->xy->nhead; 1927 /* will resubmit when we come out of remove_iorq */ 1928 return (XY_ERR_AOK); /* recovered! */ 1929 } 1930 } 1931 1932 /* 1933 * it isn't a bad144 sector, must be real error! see if we can retry 1934 * it? 1935 */ 1936 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1937 xyc_perror(iorq, iopb, 1); /* inform of error state 1938 * change */ 1939 iorq->lasterror = errno; 1940 1941 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1942 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1943 iorq->tries++; 1944 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1945 /* will resubmit at end of remove_iorq */ 1946 return (XY_ERR_AOK); /* recovered! */ 1947 } 1948 1949 /* failed to recover from this error */ 1950 return (XY_ERR_FAIL); 1951 } 1952 1953 /* 1954 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1955 */ 1956 void 1957 xyc_tick(arg) 1958 void *arg; 1959 1960 { 1961 struct xyc_softc *xycsc = arg; 1962 int lcv, s, reset = 0; 1963 1964 /* reduce ttl for each request if one goes to zero, reset xyc */ 1965 s = splbio(); 1966 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1967 if (xycsc->reqs[lcv].mode == 0 || 1968 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1969 continue; 1970 xycsc->reqs[lcv].ttl--; 1971 if (xycsc->reqs[lcv].ttl == 0) 1972 reset = 1; 1973 } 1974 if (reset) { 1975 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1976 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1977 } 1978 splx(s); 1979 1980 /* until next time */ 1981 1982 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1983 } 1984 1985 /* 1986 * xyc_ioctlcmd: this function provides a user level interface to the 1987 * controller via ioctl. this allows "format" programs to be written 1988 * in user code, and is also useful for some debugging. we return 1989 * an error code. called at user priority. 1990 * 1991 * XXX missing a few commands (see the 7053 driver for ideas) 1992 */ 1993 int 1994 xyc_ioctlcmd(xy, dev, xio) 1995 struct xy_softc *xy; 1996 dev_t dev; 1997 struct xd_iocmd *xio; 1998 1999 { 2000 int s, err, rqno; 2001 void * dvmabuf = NULL; 2002 struct xyc_softc *xycsc; 2003 2004 /* check sanity of requested command */ 2005 2006 switch (xio->cmd) { 2007 2008 case XYCMD_NOP: /* no op: everything should be zero */ 2009 if (xio->subfn || xio->dptr || xio->dlen || 2010 xio->block || xio->sectcnt) 2011 return (EINVAL); 2012 break; 2013 2014 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2015 case XYCMD_WR: 2016 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2017 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2018 return (EINVAL); 2019 break; 2020 2021 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2022 return (EINVAL); 2023 2024 break; 2025 2026 default: 2027 return (EINVAL);/* ??? */ 2028 } 2029 2030 /* create DVMA buffer for request if needed */ 2031 2032 if (xio->dlen) { 2033 dvmabuf = dvma_malloc(xio->dlen); 2034 if (xio->cmd == XYCMD_WR) { 2035 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2036 if (err) { 2037 dvma_free(dvmabuf, xio->dlen); 2038 return (err); 2039 } 2040 } 2041 } 2042 /* do it! */ 2043 2044 err = 0; 2045 xycsc = xy->parent; 2046 s = splbio(); 2047 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2048 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2049 if (rqno == XY_ERR_FAIL) { 2050 err = EIO; 2051 goto done; 2052 } 2053 xio->errno = xycsc->ciorq->errno; 2054 xio->tries = xycsc->ciorq->tries; 2055 XYC_DONE(xycsc, err); 2056 2057 if (xio->cmd == XYCMD_RD) 2058 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2059 2060 done: 2061 splx(s); 2062 if (dvmabuf) 2063 dvma_free(dvmabuf, xio->dlen); 2064 return (err); 2065 } 2066 2067 /* 2068 * xyc_e2str: convert error code number into an error string 2069 */ 2070 char * 2071 xyc_e2str(no) 2072 int no; 2073 { 2074 switch (no) { 2075 case XY_ERR_FAIL: 2076 return ("Software fatal error"); 2077 case XY_ERR_DERR: 2078 return ("DOUBLE ERROR"); 2079 case XY_ERR_AOK: 2080 return ("Successful completion"); 2081 case XY_ERR_IPEN: 2082 return("Interrupt pending"); 2083 case XY_ERR_BCFL: 2084 return("Busy conflict"); 2085 case XY_ERR_TIMO: 2086 return("Operation timeout"); 2087 case XY_ERR_NHDR: 2088 return("Header not found"); 2089 case XY_ERR_HARD: 2090 return("Hard ECC error"); 2091 case XY_ERR_ICYL: 2092 return("Illegal cylinder address"); 2093 case XY_ERR_ISEC: 2094 return("Illegal sector address"); 2095 case XY_ERR_SMAL: 2096 return("Last sector too small"); 2097 case XY_ERR_SACK: 2098 return("Slave ACK error (non-existent memory)"); 2099 case XY_ERR_CHER: 2100 return("Cylinder and head/header error"); 2101 case XY_ERR_SRTR: 2102 return("Auto-seek retry successful"); 2103 case XY_ERR_WPRO: 2104 return("Write-protect error"); 2105 case XY_ERR_UIMP: 2106 return("Unimplemented command"); 2107 case XY_ERR_DNRY: 2108 return("Drive not ready"); 2109 case XY_ERR_SZER: 2110 return("Sector count zero"); 2111 case XY_ERR_DFLT: 2112 return("Drive faulted"); 2113 case XY_ERR_ISSZ: 2114 return("Illegal sector size"); 2115 case XY_ERR_SLTA: 2116 return("Self test A"); 2117 case XY_ERR_SLTB: 2118 return("Self test B"); 2119 case XY_ERR_SLTC: 2120 return("Self test C"); 2121 case XY_ERR_SOFT: 2122 return("Soft ECC error"); 2123 case XY_ERR_SFOK: 2124 return("Soft ECC error recovered"); 2125 case XY_ERR_IHED: 2126 return("Illegal head"); 2127 case XY_ERR_DSEQ: 2128 return("Disk sequencer error"); 2129 case XY_ERR_SEEK: 2130 return("Seek error"); 2131 default: 2132 return ("Unknown error"); 2133 } 2134 } 2135 2136 int 2137 xyc_entoact(errno) 2138 2139 int errno; 2140 2141 { 2142 switch (errno) { 2143 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2144 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2145 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2146 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2147 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2148 2149 return(XY_ERA_PROG); /* program error ! */ 2150 2151 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2152 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2153 case XY_ERR_SOFT: 2154 2155 return(XY_ERA_HARD); /* hard error, retry */ 2156 2157 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2158 2159 return(XY_ERA_RSET); /* hard error reset */ 2160 2161 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2162 2163 return(XY_ERA_SOFT); /* an FYI error */ 2164 2165 case XY_ERR_WPRO: 2166 2167 return(XY_ERA_WPRO); /* write protect */ 2168 } 2169 2170 return(XY_ERA_PROG); /* ??? */ 2171 } 2172
Indexes created Mon Sep 29 21:09:56 GMT 2025