xy.c revision 1.9
1 /* $NetBSD: xy.c,v 1.9 1996/03/17 02:04:10 thorpej Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: $NetBSD: xy.c,v 1.9 1996/03/17 02:04:10 thorpej 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/conf.h> 65 #include <sys/file.h> 66 #include <sys/stat.h> 67 #include <sys/ioctl.h> 68 #include <sys/buf.h> 69 #include <sys/uio.h> 70 #include <sys/malloc.h> 71 #include <sys/device.h> 72 #include <sys/disklabel.h> 73 #include <sys/disk.h> 74 #include <sys/syslog.h> 75 #include <sys/dkbad.h> 76 #include <vm/vm.h> 77 #include <vm/vm_kern.h> 78 79 #include <machine/autoconf.h> 80 #include <machine/sun_disklabel.h> 81 #include <machine/dvma.h> 82 83 #include <sun3/dev/xyreg.h> 84 #include <sun3/dev/xyvar.h> 85 #include <sun3/dev/xio.h> 86 87 /* 88 * macros 89 */ 90 91 /* 92 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 93 */ 94 #define XYC_GO(XYC, ADDR) { \ 95 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 96 (ADDR) = ((ADDR) >> 8); \ 97 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 98 (ADDR) = ((ADDR) >> 8); \ 99 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 100 (ADDR) = ((ADDR) >> 8); \ 101 (XYC)->xyc_reloc_hi = (ADDR); \ 102 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 103 } 104 105 /* 106 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 107 */ 108 109 #define XYC_DONE(SC,ER) { \ 110 if ((ER) == XY_ERR_AOK) { \ 111 (ER) = (SC)->ciorq->errno; \ 112 (SC)->ciorq->mode = XY_SUB_FREE; \ 113 wakeup((SC)->ciorq); \ 114 } \ 115 } 116 117 /* 118 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 119 */ 120 121 #define XYC_ADVANCE(IORQ, N) { \ 122 if (N) { \ 123 (IORQ)->sectcnt -= (N); \ 124 (IORQ)->blockno += (N); \ 125 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 126 } \ 127 } 128 129 /* 130 * note - addresses you can sleep on: 131 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 132 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 133 */ 134 135 136 /* 137 * function prototypes 138 * "xyc_*" functions are internal, all others are external interfaces 139 */ 140 141 /* internals */ 142 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 143 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 144 char *xyc_e2str __P((int)); 145 int xyc_entoact __P((int)); 146 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 147 struct xy_iopb *, int)); 148 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 149 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 150 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 151 int xyc_remove_iorq __P((struct xyc_softc *)); 152 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 153 struct xy_softc *)); 154 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 155 struct xy_softc *, int, u_long, int, 156 caddr_t, struct buf *)); 157 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 158 int xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 159 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 160 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 161 void xyc_tick __P((void *)); 162 int xyc_unbusy __P((struct xyc *, int)); 163 int xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 164 165 /* machine interrupt hook */ 166 int xycintr __P((void *)); 167 168 /* {b,c}devsw */ 169 int xyclose __P((dev_t, int, int)); 170 int xydump __P((dev_t)); 171 int xyioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 172 int xyopen __P((dev_t, int, int)); 173 int xyread __P((dev_t, struct uio *)); 174 int xywrite __P((dev_t, struct uio *)); 175 int xysize __P((dev_t)); 176 void xystrategy __P((struct buf *)); 177 178 /* autoconf */ 179 int xycmatch __P((struct device *, void *, void *)); 180 void xycattach __P((struct device *, struct device *, void *)); 181 int xymatch __P((struct device *, void *, void *)); 182 void xyattach __P((struct device *, struct device *, void *)); 183 184 static void xydummystrat __P((struct buf *)); 185 int xygetdisklabel __P((struct xy_softc *, void *)); 186 187 /* 188 * cfdrivers: device driver interface to autoconfig 189 */ 190 191 struct cfattach xyc_ca = { 192 sizeof(struct xyc_softc), xycmatch, xycattach 193 }; 194 195 struct cfdriver xyc_cd = { 196 NULL, "xyc", DV_DULL 197 }; 198 199 struct cfattach xy_ca = { 200 sizeof(struct xy_softc), xymatch, xyattach 201 }; 202 203 struct cfdriver xy_cd = { 204 NULL, "xy", DV_DISK 205 }; 206 207 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 208 int driveno; /* unit number */ 209 char *dvmabuf; /* scratch buffer for reading disk label */ 210 int fullmode; /* submit mode */ 211 int booting; /* are we booting or not? */ 212 }; 213 214 /* 215 * dkdriver 216 */ 217 218 struct dkdriver xydkdriver = { xystrategy }; 219 220 /* 221 * start: disk label fix code (XXX) 222 */ 223 224 static void *xy_labeldata; 225 226 static void 227 xydummystrat(bp) 228 struct buf *bp; 229 { 230 if (bp->b_bcount != XYFM_BPS) 231 panic("xydummystrat"); 232 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 233 bp->b_flags |= B_DONE; 234 bp->b_flags &= ~B_BUSY; 235 } 236 237 int 238 xygetdisklabel(xy, b) 239 struct xy_softc *xy; 240 void *b; 241 { 242 char *err; 243 struct sun_disklabel *sdl; 244 245 /* We already have the label data in `b'; setup for dummy strategy */ 246 xy_labeldata = b; 247 248 /* Required parameter for readdisklabel() */ 249 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 250 251 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 252 xydummystrat, 253 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 254 if (err) { 255 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 256 return(XY_ERR_FAIL); 257 } 258 259 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 260 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 261 if (sdl->sl_magic == SUN_DKMAGIC) 262 xy->pcyl = sdl->sl_pcyl; 263 else { 264 printf("%s: WARNING: no `pcyl' in disk label.\n", 265 xy->sc_dev.dv_xname); 266 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 267 xy->sc_dk.dk_label->d_acylinders; 268 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 269 xy->sc_dev.dv_xname, xy->pcyl); 270 } 271 272 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 273 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 274 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 275 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 276 xy->sectpercyl = xy->nhead * xy->nsect; 277 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 278 * sun->bsd */ 279 return(XY_ERR_AOK); 280 } 281 282 /* 283 * end: disk label fix code (XXX) 284 */ 285 286 /* 287 * a u t o c o n f i g f u n c t i o n s 288 */ 289 290 /* 291 * xycmatch: determine if xyc is present or not. we do a 292 * soft reset to detect the xyc. 293 */ 294 295 int xycmatch(parent, match, aux) 296 struct device *parent; 297 void *match, *aux; 298 { 299 struct cfdata *cf = match; 300 struct confargs *ca = aux; 301 int x; 302 303 if (ca->ca_bustype != BUS_VME16) 304 return (0); 305 306 /* Default interrupt priority always splbio==2 */ 307 if (ca->ca_intpri == -1) 308 ca->ca_intpri = 2; 309 310 x = bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1); 311 if (x == -1) 312 return (0); 313 314 return (1); 315 } 316 317 /* 318 * xycattach: attach controller 319 */ 320 void 321 xycattach(parent, self, aux) 322 struct device *parent, *self; 323 void *aux; 324 325 { 326 struct xyc_softc *xyc = (void *) self; 327 struct confargs *ca = aux; 328 struct xyc_attach_args xa; 329 int lcv, err, pri, res, pbsz; 330 void *tmp, *tmp2; 331 u_long ultmp; 332 333 /* get addressing and intr level stuff from autoconfig and load it 334 * into our xyc_softc. */ 335 336 xyc->xyc = (struct xyc *) 337 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 338 xyc->ipl = ca->ca_intpri; 339 xyc->vector = ca->ca_intvec; 340 xyc->no_ols = 0; /* XXX should be from config */ 341 342 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 343 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 344 345 /* 346 * allocate and zero buffers 347 * check boundaries of the KVA's ... all IOPBs must reside in 348 * the same 64K region. 349 */ 350 351 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 352 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 353 ultmp = (u_long) tmp; 354 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 355 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 356 dvma_free(tmp2, pbsz); 357 ultmp = (u_long) tmp; 358 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 359 printf("%s: can't alloc IOPB mem in 64K\n", 360 xyc->sc_dev.dv_xname); 361 return; 362 } 363 } 364 bzero(tmp, pbsz); 365 xyc->iopbase = tmp; 366 xyc->dvmaiopb = (struct xy_iopb *) 367 dvma_kvtopa((long) xyc->iopbase, BUS_VME16); 368 xyc->reqs = (struct xy_iorq *) 369 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 370 if (xyc->reqs == NULL) 371 panic("xyc malloc"); 372 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 373 374 /* 375 * init iorq to iopb pointers, and non-zero fields in the 376 * iopb which never change. 377 */ 378 379 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 380 xyc->xy_chain[lcv] = NULL; 381 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 382 xyc->iopbase[lcv].asr = 1; /* always the same */ 383 xyc->iopbase[lcv].eef = 1; /* always the same */ 384 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 385 xyc->iopbase[lcv].aud = 1; /* always the same */ 386 xyc->iopbase[lcv].relo = 1; /* always the same */ 387 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 388 } 389 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 390 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 391 xyc->xy_hand = 0; 392 393 /* read controller parameters and insure we have a 450/451 */ 394 395 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 396 res = xyc->ciopb->ctyp; 397 XYC_DONE(xyc, err); 398 if (res != XYCT_450) { 399 if (err) 400 printf(": %s: ", xyc_e2str(err)); 401 printf(": doesn't identify as a 450/451\n"); 402 return; 403 } 404 printf(": Xylogics 450/451"); 405 if (xyc->no_ols) 406 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 407 printf("\n"); 408 if (err) { 409 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 410 xyc_e2str(err)); 411 return; 412 } 413 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 414 printf("%s: 24 bit addressing turned off\n", 415 xyc->sc_dev.dv_xname); 416 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 417 printf("to enable 24 bit mode and this driver\n"); 418 return; 419 } 420 421 /* link in interrupt with higher level software */ 422 isr_add_vectored(xycintr, (void *)xyc, 423 ca->ca_intpri, ca->ca_intvec); 424 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 425 426 /* now we must look for disks using autoconfig */ 427 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 428 xa.fullmode = XY_SUB_POLL; 429 xa.booting = 1; 430 431 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 432 (void) config_found(self, (void *) &xa, NULL); 433 434 dvma_free(xa.dvmabuf, XYFM_BPS); 435 436 /* start the watchdog clock */ 437 timeout(xyc_tick, xyc, XYC_TICKCNT); 438 } 439 440 /* 441 * xymatch: probe for disk. 442 * 443 * note: we almost always say disk is present. this allows us to 444 * spin up and configure a disk after the system is booted (we can 445 * call xyattach!). 446 */ 447 int 448 xymatch(parent, match, aux) 449 struct device *parent; 450 void *match, *aux; 451 452 { 453 struct xyc_softc *xyc = (void *) parent; 454 struct cfdata *cf = match; 455 struct xyc_attach_args *xa = aux; 456 457 /* looking for autoconf wildcard or exact match */ 458 459 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != xa->driveno) 460 return 0; 461 462 return 1; 463 464 } 465 466 /* 467 * xyattach: attach a disk. this can be called from autoconf and also 468 * from xyopen/xystrategy. 469 */ 470 void 471 xyattach(parent, self, aux) 472 struct device *parent, *self; 473 void *aux; 474 475 { 476 struct xy_softc *xy = (void *) self, *oxy; 477 struct xyc_softc *xyc = (void *) parent; 478 struct xyc_attach_args *xa = aux; 479 int res, err, spt, mb, blk, lcv, fmode, s, newstate; 480 struct dkbad *dkb; 481 struct bootpath *bp; 482 483 /* 484 * Always re-initialize the disk structure. We want statistics 485 * to start with a clean slate. 486 */ 487 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 488 xy->sc_dk.dk_driver = &xydkdriver; 489 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 490 491 /* if booting, init the xy_softc */ 492 493 if (xa->booting) { 494 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 495 xy->flags = 0; 496 xy->parent = xyc; 497 498 /* init queue of waiting bufs */ 499 500 xy->xyq.b_active = 0; 501 xy->xyq.b_actf = 0; 502 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 503 504 xy->xyrq = &xyc->reqs[xa->driveno]; 505 506 } 507 xy->xy_drive = xa->driveno; 508 fmode = xa->fullmode; 509 xyc->sc_drives[xa->driveno] = xy; 510 511 /* if not booting, make sure we are the only process in the attach for 512 * this drive. if locked out, sleep on it. */ 513 514 if (!xa->booting) { 515 s = splbio(); 516 while (xy->state == XY_DRIVE_ATTACHING) { 517 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 518 splx(s); 519 return; 520 } 521 } 522 printf("%s at %s", 523 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 524 } 525 /* we now have control */ 526 527 xy->state = XY_DRIVE_ATTACHING; 528 newstate = XY_DRIVE_UNKNOWN; 529 530 /* first try and reset the drive */ 531 532 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 533 XYC_DONE(xyc, err); 534 if (err == XY_ERR_DNRY) { 535 printf(" drive %d: off-line\n", xa->driveno); 536 goto done; 537 } 538 if (err) { 539 printf(": ERROR 0x%02x (%s)\n", err, xyc_e2str(err)); 540 goto done; 541 } 542 printf(" drive %d: ready", xa->driveno); 543 544 /* 545 * now set drive parameters (to semi-bogus values) so we can read the 546 * disk label. 547 */ 548 xy->pcyl = xy->ncyl = 1; 549 xy->acyl = 0; 550 xy->nhead = 1; 551 xy->nsect = 1; 552 xy->sectpercyl = 1; 553 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 554 xy->dkb.bt_bad[lcv].bt_cyl = 555 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 556 557 /* read disk label */ 558 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 559 xy->drive_type++) { 560 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 561 xa->dvmabuf, fmode); 562 XYC_DONE(xyc, err); 563 if (err == XY_ERR_AOK) break; 564 } 565 566 if (err != XY_ERR_AOK) { 567 printf("\n%s: reading disk label failed: %s\n", 568 xy->sc_dev.dv_xname, xyc_e2str(err)); 569 goto done; 570 } 571 printf(" (drive type %d)\n", xy->drive_type); 572 573 newstate = XY_DRIVE_NOLABEL; 574 575 xy->hw_spt = spt = 0; /* XXX needed ? */ 576 /* Attach the disk: must be before getdisklabel to malloc label */ 577 disk_attach(&xy->sc_dk); 578 579 if (xygetdisklabel(xy, xa->dvmabuf) != XY_ERR_AOK) 580 goto done; 581 582 /* inform the user of what is up */ 583 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 584 xa->dvmabuf, xy->pcyl); 585 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 586 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 587 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 588 XYFM_BPS); 589 590 /* 591 * 450/451 stupidity: the drive type is encoded into the format 592 * of the disk. the drive type in the IOPB must match the drive 593 * type in the format, or you will not be able to do I/O to the 594 * disk (you get header not found errors). if you have two drives 595 * of different sizes that have the same drive type in their 596 * formatting then you are out of luck. 597 * 598 * this problem was corrected in the 753/7053. 599 */ 600 601 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 602 oxy = xyc->sc_drives[lcv]; 603 if (oxy == NULL || oxy == xy) continue; 604 if (oxy->drive_type != xy->drive_type) continue; 605 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 606 xy->nhead != oxy->nhead) { 607 printf("%s: %s and %s must be the same size!\n", 608 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 609 oxy->sc_dev.dv_xname); 610 panic("xy drive size mismatch"); 611 } 612 } 613 614 615 /* now set the real drive parameters! */ 616 617 blk = (xy->nsect - 1) + 618 ((xy->nhead - 1) * xy->nsect) + 619 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 620 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 621 XYC_DONE(xyc, err); 622 if (err) { 623 printf("%s: write drive size failed: %s\n", 624 xy->sc_dev.dv_xname, xyc_e2str(err)); 625 goto done; 626 } 627 newstate = XY_DRIVE_ONLINE; 628 629 /* 630 * read bad144 table. this table resides on the first sector of the 631 * last track of the disk (i.e. second cyl of "acyl" area). 632 */ 633 634 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 635 /* last cyl */ 636 (xy->nhead - 1) * xy->nsect; /* last head */ 637 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 638 xa->dvmabuf, fmode); 639 XYC_DONE(xyc, err); 640 if (err) { 641 printf("%s: reading bad144 failed: %s\n", 642 xy->sc_dev.dv_xname, xyc_e2str(err)); 643 goto done; 644 } 645 646 /* check dkbad for sanity */ 647 dkb = (struct dkbad *) xa->dvmabuf; 648 for (lcv = 0; lcv < 126; lcv++) { 649 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 650 dkb->bt_bad[lcv].bt_cyl == 0) && 651 dkb->bt_bad[lcv].bt_trksec == 0xffff) 652 continue; /* blank */ 653 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 654 break; 655 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 656 break; 657 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 658 break; 659 } 660 if (lcv != 126) { 661 printf("%s: warning: invalid bad144 sector!\n", 662 xy->sc_dev.dv_xname); 663 } else { 664 bcopy(xa->dvmabuf, &xy->dkb, XYFM_BPS); 665 } 666 667 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 668 669 done: 670 xy->state = newstate; 671 if (!xa->booting) { 672 wakeup(&xy->state); 673 splx(s); 674 } 675 } 676 677 /* 678 * end of autoconfig functions 679 */ 680 681 /* 682 * { b , c } d e v s w f u n c t i o n s 683 */ 684 685 /* 686 * xyclose: close device 687 */ 688 int 689 xyclose(dev, flag, fmt) 690 dev_t dev; 691 int flag, fmt; 692 693 { 694 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 695 int part = DISKPART(dev); 696 697 /* clear mask bits */ 698 699 switch (fmt) { 700 case S_IFCHR: 701 xy->sc_dk.dk_copenmask &= ~(1 << part); 702 break; 703 case S_IFBLK: 704 xy->sc_dk.dk_bopenmask &= ~(1 << part); 705 break; 706 } 707 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 708 709 return 0; 710 } 711 712 /* 713 * xydump: crash dump system 714 */ 715 int 716 xydump(dev) 717 dev_t dev; 718 719 { 720 int unit, part; 721 struct xy_softc *xy; 722 723 unit = DISKUNIT(dev); 724 if (unit >= xy_cd.cd_ndevs) 725 return ENXIO; 726 part = DISKPART(dev); 727 728 xy = xy_cd.cd_devs[unit]; 729 730 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 731 'a' + part); 732 733 return ENXIO; 734 735 /* outline: globals: "dumplo" == sector number of partition to start 736 * dump at (convert to physical sector with partition table) 737 * "dumpsize" == size of dump in clicks "physmem" == size of physical 738 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 739 * physmem) 740 * 741 * dump a copy of physical memory to the dump device starting at sector 742 * "dumplo" in the swap partition (make sure > 0). map in pages as 743 * we go. use polled I/O. 744 * 745 * XXX how to handle NON_CONTIG? */ 746 747 } 748 749 /* 750 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 751 */ 752 int 753 xyioctl(dev, command, addr, flag, p) 754 dev_t dev; 755 u_long command; 756 caddr_t addr; 757 int flag; 758 struct proc *p; 759 760 { 761 struct xy_softc *xy; 762 struct xd_iocmd *xio; 763 int error, s, unit; 764 765 unit = DISKUNIT(dev); 766 767 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 768 return (ENXIO); 769 770 /* switch on ioctl type */ 771 772 switch (command) { 773 case DIOCSBAD: /* set bad144 info */ 774 if ((flag & FWRITE) == 0) 775 return EBADF; 776 s = splbio(); 777 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 778 splx(s); 779 return 0; 780 781 case DIOCGDINFO: /* get disk label */ 782 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 783 return 0; 784 785 case DIOCGPART: /* get partition info */ 786 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 787 ((struct partinfo *) addr)->part = 788 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 789 return 0; 790 791 case DIOCSDINFO: /* set disk label */ 792 if ((flag & FWRITE) == 0) 793 return EBADF; 794 error = setdisklabel(xy->sc_dk.dk_label, 795 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 796 xy->sc_dk.dk_cpulabel); 797 if (error == 0) { 798 if (xy->state == XY_DRIVE_NOLABEL) 799 xy->state = XY_DRIVE_ONLINE; 800 } 801 return error; 802 803 case DIOCWLABEL: /* change write status of disk label */ 804 if ((flag & FWRITE) == 0) 805 return EBADF; 806 if (*(int *) addr) 807 xy->flags |= XY_WLABEL; 808 else 809 xy->flags &= ~XY_WLABEL; 810 return 0; 811 812 case DIOCWDINFO: /* write disk label */ 813 if ((flag & FWRITE) == 0) 814 return EBADF; 815 error = setdisklabel(xy->sc_dk.dk_label, 816 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 817 xy->sc_dk.dk_cpulabel); 818 if (error == 0) { 819 if (xy->state == XY_DRIVE_NOLABEL) 820 xy->state = XY_DRIVE_ONLINE; 821 822 /* Simulate opening partition 0 so write succeeds. */ 823 xy->sc_dk.dk_openmask |= (1 << 0); 824 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 825 xystrategy, xy->sc_dk.dk_label, 826 xy->sc_dk.dk_cpulabel); 827 xy->sc_dk.dk_openmask = 828 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 829 } 830 return error; 831 832 case DIOSXDCMD: 833 xio = (struct xd_iocmd *) addr; 834 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 835 return (error); 836 return (xyc_ioctlcmd(xy, dev, xio)); 837 838 default: 839 return ENOTTY; 840 } 841 } 842 843 /* 844 * xyopen: open drive 845 */ 846 847 int 848 xyopen(dev, flag, fmt) 849 dev_t dev; 850 int flag, fmt; 851 852 { 853 int unit, part; 854 struct xy_softc *xy; 855 struct xyc_attach_args xa; 856 857 /* first, could it be a valid target? */ 858 859 unit = DISKUNIT(dev); 860 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 861 return (ENXIO); 862 part = DISKPART(dev); 863 864 /* do we need to attach the drive? */ 865 866 if (xy->state == XY_DRIVE_UNKNOWN) { 867 xa.driveno = xy->xy_drive; 868 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 869 xa.fullmode = XY_SUB_WAIT; 870 xa.booting = 0; 871 xyattach((struct device *) xy->parent, 872 (struct device *) xy, &xa); 873 dvma_free(xa.dvmabuf, XYFM_BPS); 874 if (xy->state == XY_DRIVE_UNKNOWN) { 875 return (EIO); 876 } 877 } 878 /* check for partition */ 879 880 if (part != RAW_PART && 881 (part >= xy->sc_dk.dk_label->d_npartitions || 882 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 883 return (ENXIO); 884 } 885 /* set open masks */ 886 887 switch (fmt) { 888 case S_IFCHR: 889 xy->sc_dk.dk_copenmask |= (1 << part); 890 break; 891 case S_IFBLK: 892 xy->sc_dk.dk_bopenmask |= (1 << part); 893 break; 894 } 895 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 896 897 return 0; 898 } 899 900 int 901 xyread(dev, uio) 902 dev_t dev; 903 struct uio *uio; 904 { 905 906 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 907 } 908 909 int 910 xywrite(dev, uio) 911 dev_t dev; 912 struct uio *uio; 913 { 914 915 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 916 } 917 918 919 /* 920 * xysize: return size of a partition for a dump 921 */ 922 923 int 924 xysize(dev) 925 dev_t dev; 926 927 { 928 struct xy_softc *xysc; 929 int unit, part, size; 930 931 /* valid unit? try an open */ 932 933 if (xyopen(dev, 0, S_IFBLK) != 0) 934 return (-1); 935 936 /* do it */ 937 938 xysc = xy_cd.cd_devs[DISKUNIT(dev)]; 939 part = DISKPART(dev); 940 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 941 size = -1; /* only give valid size for swap partitions */ 942 else 943 size = xysc->sc_dk.dk_label->d_partitions[part].p_size; 944 if (xyclose(dev, 0, S_IFBLK) != 0) 945 return -1; 946 return size; 947 } 948 949 /* 950 * xystrategy: buffering system interface to xy. 951 */ 952 953 void 954 xystrategy(bp) 955 struct buf *bp; 956 957 { 958 struct xy_softc *xy; 959 struct xyc_softc *parent; 960 struct buf *wq; 961 int s, unit; 962 struct xyc_attach_args xa; 963 964 unit = DISKUNIT(bp->b_dev); 965 966 /* check for live device */ 967 968 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 969 bp->b_blkno < 0 || 970 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 971 bp->b_error = EINVAL; 972 goto bad; 973 } 974 /* do we need to attach the drive? */ 975 976 if (xy->state == XY_DRIVE_UNKNOWN) { 977 xa.driveno = xy->xy_drive; 978 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 979 xa.fullmode = XY_SUB_WAIT; 980 xa.booting = 0; 981 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 982 dvma_free(xa.dvmabuf, XYFM_BPS); 983 if (xy->state == XY_DRIVE_UNKNOWN) { 984 bp->b_error = EIO; 985 goto bad; 986 } 987 } 988 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 989 /* no I/O to unlabeled disks, unless raw partition */ 990 bp->b_error = EIO; 991 goto bad; 992 } 993 /* short circuit zero length request */ 994 995 if (bp->b_bcount == 0) 996 goto done; 997 998 /* check bounds with label (disksubr.c). Determine the size of the 999 * transfer, and make sure it is within the boundaries of the 1000 * partition. Adjust transfer if needed, and signal errors or early 1001 * completion. */ 1002 1003 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 1004 (xy->flags & XY_WLABEL) != 0) <= 0) 1005 goto done; 1006 1007 /* 1008 * now we know we have a valid buf structure that we need to do I/O 1009 * on. 1010 */ 1011 1012 s = splbio(); /* protect the queues */ 1013 1014 disksort(&xy->xyq, bp); 1015 1016 /* start 'em up */ 1017 1018 xyc_start(xy->parent, NULL); 1019 1020 /* done! */ 1021 1022 splx(s); 1023 return; 1024 1025 bad: /* tells upper layers we have an error */ 1026 bp->b_flags |= B_ERROR; 1027 done: /* tells upper layers we are done with this 1028 * buf */ 1029 bp->b_resid = bp->b_bcount; 1030 biodone(bp); 1031 } 1032 /* 1033 * end of {b,c}devsw functions 1034 */ 1035 1036 /* 1037 * i n t e r r u p t f u n c t i o n 1038 * 1039 * xycintr: hardware interrupt. 1040 */ 1041 int 1042 xycintr(v) 1043 void *v; 1044 1045 { 1046 struct xyc_softc *xycsc = v; 1047 struct xy_softc *xy; 1048 struct buf *bp; 1049 1050 /* kick the event counter */ 1051 1052 xycsc->sc_intrcnt.ev_count++; 1053 1054 /* remove as many done IOPBs as possible */ 1055 1056 xyc_remove_iorq(xycsc); 1057 1058 /* start any iorq's already waiting */ 1059 1060 xyc_start(xycsc, NULL); 1061 1062 return (1); 1063 } 1064 /* 1065 * end of interrupt function 1066 */ 1067 1068 /* 1069 * i n t e r n a l f u n c t i o n s 1070 */ 1071 1072 /* 1073 * xyc_rqinit: fill out the fields of an I/O request 1074 */ 1075 1076 inline void 1077 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1078 struct xy_iorq *rq; 1079 struct xyc_softc *xyc; 1080 struct xy_softc *xy; 1081 int md; 1082 u_long blk; 1083 int cnt; 1084 caddr_t db; 1085 struct buf *bp; 1086 { 1087 rq->xyc = xyc; 1088 rq->xy = xy; 1089 rq->ttl = XYC_MAXTTL + 10; 1090 rq->mode = md; 1091 rq->tries = rq->errno = rq->lasterror = 0; 1092 rq->blockno = blk; 1093 rq->sectcnt = cnt; 1094 rq->dbuf = rq->dbufbase = db; 1095 rq->buf = bp; 1096 } 1097 1098 /* 1099 * xyc_rqtopb: load up an IOPB based on an iorq 1100 */ 1101 1102 void 1103 xyc_rqtopb(iorq, iopb, cmd, subfun) 1104 struct xy_iorq *iorq; 1105 struct xy_iopb *iopb; 1106 int cmd, subfun; 1107 1108 { 1109 u_long block, dp; 1110 1111 /* normal IOPB case, standard stuff */ 1112 1113 /* chain bit handled later */ 1114 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1115 iopb->com = cmd; 1116 iopb->errno = 0; 1117 iopb->errs = 0; 1118 iopb->done = 0; 1119 if (iorq->xy) { 1120 iopb->unit = iorq->xy->xy_drive; 1121 iopb->dt = iorq->xy->drive_type; 1122 } else { 1123 iopb->unit = 0; 1124 iopb->dt = 0; 1125 } 1126 block = iorq->blockno; 1127 if (iorq->xy == NULL || block == 0) { 1128 iopb->sect = iopb->head = iopb->cyl = 0; 1129 } else { 1130 iopb->sect = block % iorq->xy->nsect; 1131 block = block / iorq->xy->nsect; 1132 iopb->head = block % iorq->xy->nhead; 1133 block = block / iorq->xy->nhead; 1134 iopb->cyl = block; 1135 } 1136 iopb->scnt = iorq->sectcnt; 1137 if (iorq->dbuf == NULL) { 1138 iopb->dataa = 0; 1139 iopb->datar = 0; 1140 } else { 1141 dp = dvma_kvtopa((long)iorq->dbuf, BUS_VME16); 1142 iopb->dataa = (dp & 0xffff); 1143 iopb->datar = ((dp & 0xff0000) >> 16); 1144 } 1145 iopb->subfn = subfun; 1146 } 1147 1148 1149 /* 1150 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1151 */ 1152 1153 int 1154 xyc_unbusy(xyc, del) 1155 1156 struct xyc *xyc; 1157 int del; 1158 1159 { 1160 while (del-- > 0) { 1161 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1162 break; 1163 DELAY(1); 1164 } 1165 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1166 } 1167 1168 /* 1169 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1170 * note that NORM requests are handled seperately. 1171 */ 1172 int 1173 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1174 struct xyc_softc *xycsc; 1175 int cmd, subfn, unit, block, scnt; 1176 char *dptr; 1177 int fullmode; 1178 1179 { 1180 int submode = XY_STATE(fullmode), retry; 1181 u_long dp; 1182 struct xy_iorq *iorq = xycsc->ciorq; 1183 struct xy_iopb *iopb = xycsc->ciopb; 1184 1185 /* 1186 * is someone else using the control iopq wait for it if we can 1187 */ 1188 start: 1189 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1190 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1191 return(XY_ERR_FAIL); 1192 goto start; 1193 } 1194 1195 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1196 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1197 iorq->mode = XY_SUB_FREE; 1198 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1199 } 1200 1201 /* init iorq/iopb */ 1202 1203 xyc_rqinit(iorq, xycsc, 1204 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1205 fullmode, block, scnt, dptr, NULL); 1206 1207 /* load IOPB from iorq */ 1208 1209 xyc_rqtopb(iorq, iopb, cmd, subfn); 1210 1211 /* submit it for processing */ 1212 1213 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1214 1215 return(XY_ERR_AOK); 1216 } 1217 1218 /* 1219 * xyc_startbuf 1220 * start a buffer for running 1221 */ 1222 1223 int 1224 xyc_startbuf(xycsc, xysc, bp) 1225 struct xyc_softc *xycsc; 1226 struct xy_softc *xysc; 1227 struct buf *bp; 1228 1229 { 1230 int partno; 1231 struct xy_iorq *iorq; 1232 struct xy_iopb *iopb; 1233 u_long block, dp; 1234 caddr_t dbuf; 1235 1236 iorq = xysc->xyrq; 1237 iopb = iorq->iopb; 1238 1239 /* get buf */ 1240 1241 if (bp == NULL) 1242 panic("xyc_startbuf null buf"); 1243 1244 partno = DISKPART(bp->b_dev); 1245 #ifdef XYC_DEBUG 1246 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1247 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1248 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1249 bp->b_bcount, bp->b_data); 1250 #endif 1251 1252 /* 1253 * load request. we have to calculate the correct block number based 1254 * on partition info. 1255 * 1256 * also, note that there are two kinds of buf structures, those with 1257 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1258 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1259 * buffer which has already been mapped into DVMA space. (Not on sun3) 1260 * However, if B_PHYS is not set, then the buffer is a normal system 1261 * buffer which does *not* live in DVMA space. In that case we call 1262 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1263 * 1264 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1265 * as mapped into DVMA space, where as the bp->b_data points to its 1266 * non-DVMA mapping. 1267 * 1268 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1269 * into dvma space, only that it was remapped into the kernel. 1270 * We ALWAYS have to remap the kernel buf into DVMA space. 1271 * (It is done inexpensively, using whole segments!) 1272 */ 1273 1274 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1275 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1276 1277 dbuf = dvma_mapin(bp->b_data, bp->b_bcount); 1278 if (dbuf == NULL) { /* out of DVMA space */ 1279 printf("%s: warning: out of DVMA space\n", 1280 xycsc->sc_dev.dv_xname); 1281 return (XY_ERR_FAIL); /* XXX: need some sort of 1282 * call-back scheme here? */ 1283 } 1284 1285 /* init iorq and load iopb from it */ 1286 1287 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1288 bp->b_bcount / XYFM_BPS, dbuf, bp); 1289 1290 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1291 1292 /* Instrumentation. */ 1293 disk_busy(&xysc->sc_dk); 1294 1295 return (XY_ERR_AOK); 1296 } 1297 1298 1299 /* 1300 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1301 * if ok. if it fail returns an error code. type is XY_SUB_*. 1302 * 1303 * note: caller frees iorq in all cases except NORM 1304 * 1305 * return value: 1306 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1307 * WAIT: XY_AOK (success), <error-code> (failed) 1308 * POLL: <same as WAIT> 1309 * NOQ : <same as NORM> 1310 * 1311 * there are three sources for i/o requests: 1312 * [1] xystrategy: normal block I/O, using "struct buf" system. 1313 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1314 * [3] open/ioctl: these are I/O requests done in the context of a process, 1315 * and the process should block until they are done. 1316 * 1317 * software state is stored in the iorq structure. each iorq has an 1318 * iopb structure. the hardware understands the iopb structure. 1319 * every command must go through an iopb. a 450 handles one iopb at a 1320 * time, where as a 451 can take them in chains. [the 450 claims it 1321 * can handle chains, but is appears to be buggy...] iopb are allocated 1322 * in DVMA space at boot up time. each disk gets one iopb, and the 1323 * controller gets one (for POLL and WAIT commands). what happens if 1324 * the iopb is busy? for i/o type [1], the buffers are queued at the 1325 * "buff" layer and * picked up later by the interrupt routine. for case 1326 * [2] we can only be blocked if there is a WAIT type I/O request being 1327 * run. since this can only happen when we are crashing, we wait a sec 1328 * and then steal the IOPB. for case [3] the process can sleep 1329 * on the iorq free list until some iopbs are avaliable. 1330 */ 1331 1332 1333 int 1334 xyc_submit_iorq(xycsc, iorq, type) 1335 struct xyc_softc *xycsc; 1336 struct xy_iorq *iorq; 1337 int type; 1338 1339 { 1340 struct xy_iopb *iopb; 1341 u_long iopbaddr; 1342 1343 #ifdef XYC_DEBUG 1344 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1345 xycsc->sc_dev.dv_xname, iorq, type); 1346 #endif 1347 1348 /* first check and see if controller is busy */ 1349 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1350 #ifdef XYC_DEBUG 1351 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1352 #endif 1353 if (type == XY_SUB_NOQ) 1354 return (XY_ERR_FAIL); /* failed */ 1355 switch (type) { 1356 case XY_SUB_NORM: 1357 return XY_ERR_AOK; /* success */ 1358 case XY_SUB_WAIT: 1359 while (iorq->iopb->done == 0) { 1360 sleep(iorq, PRIBIO); 1361 } 1362 return (iorq->errno); 1363 case XY_SUB_POLL: /* steal controller */ 1364 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1365 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1366 panic("xyc_submit_iorq: stuck xyc"); 1367 printf("%s: stole controller\n", 1368 xycsc->sc_dev.dv_xname); 1369 break; 1370 default: 1371 panic("xyc_submit_iorq adding"); 1372 } 1373 } 1374 1375 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1376 if (iopb == NULL) { /* nothing doing? */ 1377 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1378 return(XY_ERR_AOK); 1379 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1380 } 1381 iopbaddr = dvma_kvtopa((long) iopb, BUS_VME16); 1382 1383 XYC_GO(xycsc->xyc, iopbaddr); 1384 1385 /* command now running, wrap it up */ 1386 switch (type) { 1387 case XY_SUB_NORM: 1388 case XY_SUB_NOQ: 1389 return (XY_ERR_AOK); /* success */ 1390 case XY_SUB_WAIT: 1391 while (iorq->iopb->done == 0) { 1392 sleep(iorq, PRIBIO); 1393 } 1394 return (iorq->errno); 1395 case XY_SUB_POLL: 1396 return (xyc_piodriver(xycsc, iorq)); 1397 default: 1398 panic("xyc_submit_iorq wrap up"); 1399 } 1400 panic("xyc_submit_iorq"); 1401 return 0; /* not reached */ 1402 } 1403 1404 1405 /* 1406 * xyc_chain: build a chain. return dvma address of first element in 1407 * the chain. iorq != NULL: means we only want that item on the chain. 1408 */ 1409 1410 struct xy_iopb * 1411 xyc_chain(xycsc, iorq) 1412 1413 struct xyc_softc *xycsc; 1414 struct xy_iorq *iorq; 1415 1416 { 1417 int togo, chain, hand; 1418 struct xy_iopb *iopb, *prev_iopb; 1419 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1420 1421 /* 1422 * promote control IOPB to the top 1423 */ 1424 if (iorq == NULL) { 1425 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1426 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1427 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1428 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1429 } 1430 /* 1431 * special case: if iorq != NULL then we have a POLL or WAIT request. 1432 * we let these take priority and do them first. 1433 */ 1434 if (iorq) { 1435 xycsc->xy_chain[0] = iorq; 1436 iorq->iopb->chen = 0; 1437 return(iorq->iopb); 1438 } 1439 1440 /* 1441 * NORM case: do round robin and maybe chain (if allowed and possible) 1442 */ 1443 1444 chain = 0; 1445 hand = xycsc->xy_hand; 1446 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1447 1448 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1449 1450 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1451 xycsc->iopbase[hand].done) 1452 continue; /* not ready-for-i/o */ 1453 1454 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1455 iopb = xycsc->xy_chain[chain]->iopb; 1456 iopb->chen = 0; 1457 if (chain != 0) { /* adding a link to a chain? */ 1458 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1459 prev_iopb->chen = 1; 1460 prev_iopb->nxtiopb = 0xffff & 1461 dvma_kvtopa((long) iopb, BUS_VME16); 1462 } else { /* head of chain */ 1463 iorq = xycsc->xy_chain[chain]; 1464 } 1465 chain++; 1466 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1467 } 1468 return(iorq ? iorq->iopb : NULL); 1469 } 1470 1471 /* 1472 * xyc_piodriver 1473 * 1474 * programmed i/o driver. this function takes over the computer 1475 * and drains off the polled i/o request. it returns the status of the iorq 1476 * the caller is interesting in. 1477 */ 1478 int 1479 xyc_piodriver(xycsc, iorq) 1480 struct xyc_softc *xycsc; 1481 struct xy_iorq *iorq; 1482 1483 { 1484 int nreset = 0; 1485 int retval = 0; 1486 u_long res; 1487 struct xyc *xyc = xycsc->xyc; 1488 #ifdef XYC_DEBUG 1489 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1490 #endif 1491 1492 while (iorq->iopb->done == 0) { 1493 1494 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1495 1496 /* we expect some progress soon */ 1497 if (res == XY_ERR_FAIL && nreset >= 2) { 1498 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1499 #ifdef XYC_DEBUG 1500 printf("xyc_piodriver: timeout\n"); 1501 #endif 1502 return (XY_ERR_FAIL); 1503 } 1504 if (res == XY_ERR_FAIL) { 1505 if (xyc_reset(xycsc, 0, 1506 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1507 XY_ERR_FAIL, 1508 0) == XY_ERR_FAIL) 1509 return (XY_ERR_FAIL); /* flushes all but POLL 1510 * requests, resets */ 1511 continue; 1512 } 1513 1514 xyc_remove_iorq(xycsc); /* may resubmit request */ 1515 1516 if (iorq->iopb->done == 0) 1517 xyc_start(xycsc, iorq); 1518 } 1519 1520 /* get return value */ 1521 1522 retval = iorq->errno; 1523 1524 #ifdef XYC_DEBUG 1525 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1526 iorq->errno, xyc_e2str(iorq->errno)); 1527 #endif 1528 1529 /* start up any bufs that have queued */ 1530 1531 xyc_start(xycsc, NULL); 1532 1533 return (retval); 1534 } 1535 1536 /* 1537 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1538 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1539 */ 1540 int 1541 xyc_xyreset(xycsc, xysc) 1542 struct xyc_softc *xycsc; 1543 struct xy_softc *xysc; 1544 1545 { 1546 struct xy_iopb tmpiopb; 1547 u_long addr; 1548 int del; 1549 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1550 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1551 xycsc->ciopb->ien = 0; 1552 xycsc->ciopb->com = XYCMD_RST; 1553 xycsc->ciopb->unit = xysc->xy_drive; 1554 addr = dvma_kvtopa((long) xycsc->ciopb, BUS_VME16); 1555 1556 XYC_GO(xycsc->xyc, addr); 1557 1558 del = XYC_RESETUSEC; 1559 while (del > 0) { 1560 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1561 DELAY(1); 1562 del--; 1563 } 1564 1565 if (del <= 0 || xycsc->ciopb->errs) { 1566 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1567 xyc_e2str(xycsc->ciopb->errno)); 1568 del = xycsc->xyc->xyc_rsetup; 1569 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1570 panic("xyc_reset"); 1571 } else { 1572 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1573 } 1574 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1575 } 1576 1577 1578 /* 1579 * xyc_reset: reset everything: requests are marked as errors except 1580 * a polled request (which is resubmitted) 1581 */ 1582 int 1583 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1584 struct xyc_softc *xycsc; 1585 int quiet, error; 1586 struct xy_iorq *blastmode; 1587 struct xy_softc *xysc; 1588 1589 { 1590 int del = 0, lcv, poll = -1, retval = XY_ERR_AOK; 1591 struct xy_iorq *iorq; 1592 1593 /* soft reset hardware */ 1594 1595 if (!quiet) 1596 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1597 del = xycsc->xyc->xyc_rsetup; 1598 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1599 if (del == XY_ERR_FAIL) { 1600 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1601 retval = XY_ERR_FAIL; 1602 } 1603 if (xysc) 1604 xyc_xyreset(xycsc, xysc); 1605 1606 /* fix queues based on "blast-mode" */ 1607 1608 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1609 iorq = &xycsc->reqs[lcv]; 1610 1611 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1612 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1613 XY_STATE(iorq->mode) != XY_SUB_NORM) 1614 /* is it active? */ 1615 continue; 1616 1617 if (blastmode == XY_RSET_ALL || 1618 blastmode != iorq) { 1619 /* failed */ 1620 iorq->errno = error; 1621 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1622 switch (XY_STATE(iorq->mode)) { 1623 case XY_SUB_NORM: 1624 iorq->buf->b_error = EIO; 1625 iorq->buf->b_flags |= B_ERROR; 1626 iorq->buf->b_resid = 1627 iorq->sectcnt * XYFM_BPS; 1628 /* Sun3: map/unmap regardless of B_PHYS */ 1629 dvma_mapout(iorq->dbufbase, 1630 iorq->buf->b_bcount); 1631 iorq->xy->xyq.b_actf = 1632 iorq->buf->b_actf; 1633 disk_unbusy(&iorq->xy->sc_dk, 1634 (iorq->buf->b_bcount - 1635 iorq->buf->b_resid)); 1636 biodone(iorq->buf); 1637 iorq->mode = XY_SUB_FREE; 1638 break; 1639 case XY_SUB_WAIT: 1640 wakeup(iorq); 1641 case XY_SUB_POLL: 1642 iorq->mode = 1643 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1644 break; 1645 } 1646 1647 } else { 1648 1649 /* resubmit, no need to do anything here */ 1650 } 1651 } 1652 1653 /* 1654 * now, if stuff is waiting, start it. 1655 * since we just reset it should go 1656 */ 1657 xyc_start(xycsc, NULL); 1658 1659 return (retval); 1660 } 1661 1662 /* 1663 * xyc_start: start waiting buffers 1664 */ 1665 1666 int 1667 xyc_start(xycsc, iorq) 1668 struct xyc_softc *xycsc; 1669 struct xy_iorq *iorq; 1670 1671 { 1672 int lcv; 1673 struct xy_softc *xy; 1674 1675 if (iorq == NULL) { 1676 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1677 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1678 if (xy->xyq.b_actf == NULL) continue; 1679 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1680 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1681 } 1682 } 1683 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1684 } 1685 1686 /* 1687 * xyc_remove_iorq: remove "done" IOPB's. 1688 */ 1689 1690 int 1691 xyc_remove_iorq(xycsc) 1692 struct xyc_softc *xycsc; 1693 1694 { 1695 int errno, rq, comm, errs; 1696 struct xyc *xyc = xycsc->xyc; 1697 u_long addr; 1698 struct xy_iopb *iopb; 1699 struct xy_iorq *iorq; 1700 struct buf *bp; 1701 1702 if (xyc->xyc_csr & XYC_DERR) { 1703 /* 1704 * DOUBLE ERROR: should never happen under normal use. This 1705 * error is so bad, you can't even tell which IOPB is bad, so 1706 * we dump them all. 1707 */ 1708 errno = XY_ERR_DERR; 1709 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1710 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1711 printf("%s: soft reset failed!\n", 1712 xycsc->sc_dev.dv_xname); 1713 panic("xyc_remove_iorq: controller DEAD"); 1714 } 1715 return (XY_ERR_AOK); 1716 } 1717 1718 /* 1719 * get iopb that is done, loop down the chain 1720 */ 1721 1722 if (xyc->xyc_csr & XYC_ERR) { 1723 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1724 } 1725 if (xyc->xyc_csr & XYC_IPND) { 1726 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1727 } 1728 1729 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1730 iorq = xycsc->xy_chain[rq]; 1731 if (iorq == NULL) break; /* done ! */ 1732 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1733 continue; /* free, or done */ 1734 iopb = iorq->iopb; 1735 if (iopb->done == 0) 1736 continue; /* not done yet */ 1737 1738 comm = iopb->com; 1739 errs = iopb->errs; 1740 1741 if (errs) 1742 iorq->errno = iopb->errno; 1743 else 1744 iorq->errno = 0; 1745 1746 /* handle non-fatal errors */ 1747 1748 if (errs && 1749 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1750 continue; /* AOK: we resubmitted it */ 1751 1752 1753 /* this iorq is now done (hasn't been restarted or anything) */ 1754 1755 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1756 xyc_perror(iorq, iopb, 0); 1757 1758 /* now, if read/write check to make sure we got all the data 1759 * we needed. (this may not be the case if we got an error in 1760 * the middle of a multisector request). */ 1761 1762 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1763 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1764 /* we just successfully processed a bad144 sector 1765 * note: if we are in bad 144 mode, the pointers have 1766 * been advanced already (see above) and are pointing 1767 * at the bad144 sector. to exit bad144 mode, we 1768 * must advance the pointers 1 sector and issue a new 1769 * request if there are still sectors left to process 1770 * 1771 */ 1772 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1773 1774 /* exit b144 mode */ 1775 iorq->mode = iorq->mode & (~XY_MODE_B144); 1776 1777 if (iorq->sectcnt) { /* more to go! */ 1778 iorq->lasterror = iorq->errno = iopb->errno = 0; 1779 iopb->errs = iopb->done = 0; 1780 iorq->tries = 0; 1781 iopb->scnt = iorq->sectcnt; 1782 iopb->cyl = iorq->blockno / 1783 iorq->xy->sectpercyl; 1784 iopb->head = 1785 (iorq->blockno / iorq->xy->nhead) % 1786 iorq->xy->nhead; 1787 iopb->sect = iorq->blockno % XYFM_BPS; 1788 addr = dvma_kvtopa((long) iorq->dbuf, BUS_VME16); 1789 iopb->dataa = (addr & 0xffff); 1790 iopb->datar = ((addr & 0xff0000) >> 16); 1791 /* will resubit at end */ 1792 continue; 1793 } 1794 } 1795 /* final cleanup, totally done with this request */ 1796 1797 switch (XY_STATE(iorq->mode)) { 1798 case XY_SUB_NORM: 1799 bp = iorq->buf; 1800 if (errs) { 1801 bp->b_error = EIO; 1802 bp->b_flags |= B_ERROR; 1803 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1804 } else { 1805 bp->b_resid = 0; /* done */ 1806 } 1807 /* Sun3: map/unmap regardless of B_PHYS */ 1808 dvma_mapout(iorq->dbufbase, 1809 iorq->buf->b_bcount); 1810 iorq->xy->xyq.b_actf = bp->b_actf; 1811 disk_unbusy(&iorq->xy->sc_dk, 1812 (bp->b_bcount - bp->b_resid)); 1813 biodone(bp); 1814 iorq->mode = XY_SUB_FREE; 1815 break; 1816 case XY_SUB_WAIT: 1817 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1818 wakeup(iorq); 1819 break; 1820 case XY_SUB_POLL: 1821 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1822 break; 1823 } 1824 } 1825 1826 return (XY_ERR_AOK); 1827 } 1828 1829 /* 1830 * xyc_perror: print error. 1831 * - if still_trying is true: we got an error, retried and got a 1832 * different error. in that case lasterror is the old error, 1833 * and errno is the new one. 1834 * - if still_trying is not true, then if we ever had an error it 1835 * is in lasterror. also, if iorq->errno == 0, then we recovered 1836 * from that error (otherwise iorq->errno == iorq->lasterror). 1837 */ 1838 void 1839 xyc_perror(iorq, iopb, still_trying) 1840 struct xy_iorq *iorq; 1841 struct xy_iopb *iopb; 1842 int still_trying; 1843 1844 { 1845 1846 int error = iorq->lasterror; 1847 1848 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1849 : iorq->xyc->sc_dev.dv_xname); 1850 if (iorq->buf) 1851 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1852 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1853 printf("%s %d/%d/%d: ", 1854 (iopb->com == XYCMD_RD) ? "read" : "write", 1855 iopb->cyl, iopb->head, iopb->sect); 1856 printf("%s", xyc_e2str(error)); 1857 1858 if (still_trying) 1859 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1860 else 1861 if (iorq->errno == 0) 1862 printf(" [recovered in %d tries]", iorq->tries); 1863 1864 printf("\n"); 1865 } 1866 1867 /* 1868 * xyc_error: non-fatal error encountered... recover. 1869 * return AOK if resubmitted, return FAIL if this iopb is done 1870 */ 1871 int 1872 xyc_error(xycsc, iorq, iopb, comm) 1873 struct xyc_softc *xycsc; 1874 struct xy_iorq *iorq; 1875 struct xy_iopb *iopb; 1876 int comm; 1877 1878 { 1879 int errno = iorq->errno; 1880 int erract = xyc_entoact(errno); 1881 int oldmode, advance, i; 1882 1883 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1884 oldmode = iorq->mode; 1885 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1886 /* make xyc_start ignore us */ 1887 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1888 iorq->mode = oldmode; 1889 } 1890 /* check for read/write to a sector in bad144 table if bad: redirect 1891 * request to bad144 area */ 1892 1893 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1894 (iorq->mode & XY_MODE_B144) == 0) { 1895 advance = iorq->sectcnt - iopb->scnt; 1896 XYC_ADVANCE(iorq, advance); 1897 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1898 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1899 iorq->blockno % iorq->xy->nsect)) != -1) { 1900 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1901 * redirect */ 1902 iopb->errno = iopb->done = iopb->errs = 0; 1903 iopb->scnt = 1; 1904 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1905 /* second to last acyl */ 1906 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1907 * standard */ 1908 iopb->head = i / iorq->xy->nhead; 1909 iopb->sect = i % iorq->xy->nhead; 1910 /* will resubmit when we come out of remove_iorq */ 1911 return (XY_ERR_AOK); /* recovered! */ 1912 } 1913 } 1914 1915 /* 1916 * it isn't a bad144 sector, must be real error! see if we can retry 1917 * it? 1918 */ 1919 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1920 xyc_perror(iorq, iopb, 1); /* inform of error state 1921 * change */ 1922 iorq->lasterror = errno; 1923 1924 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1925 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1926 iorq->tries++; 1927 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1928 /* will resubmit at end of remove_iorq */ 1929 return (XY_ERR_AOK); /* recovered! */ 1930 } 1931 1932 /* failed to recover from this error */ 1933 return (XY_ERR_FAIL); 1934 } 1935 1936 /* 1937 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1938 */ 1939 void 1940 xyc_tick(arg) 1941 void *arg; 1942 1943 { 1944 struct xyc_softc *xycsc = arg; 1945 int lcv, s, reset = 0; 1946 1947 /* reduce ttl for each request if one goes to zero, reset xyc */ 1948 s = splbio(); 1949 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1950 if (xycsc->reqs[lcv].mode == 0 || 1951 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1952 continue; 1953 xycsc->reqs[lcv].ttl--; 1954 if (xycsc->reqs[lcv].ttl == 0) 1955 reset = 1; 1956 } 1957 if (reset) { 1958 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1959 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1960 } 1961 splx(s); 1962 1963 /* until next time */ 1964 1965 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1966 } 1967 1968 /* 1969 * xyc_ioctlcmd: this function provides a user level interface to the 1970 * controller via ioctl. this allows "format" programs to be written 1971 * in user code, and is also useful for some debugging. we return 1972 * an error code. called at user priority. 1973 * 1974 * XXX missing a few commands (see the 7053 driver for ideas) 1975 */ 1976 int 1977 xyc_ioctlcmd(xy, dev, xio) 1978 struct xy_softc *xy; 1979 dev_t dev; 1980 struct xd_iocmd *xio; 1981 1982 { 1983 int s, err, rqno, dummy; 1984 caddr_t dvmabuf = NULL; 1985 struct xyc_softc *xycsc; 1986 1987 /* check sanity of requested command */ 1988 1989 switch (xio->cmd) { 1990 1991 case XYCMD_NOP: /* no op: everything should be zero */ 1992 if (xio->subfn || xio->dptr || xio->dlen || 1993 xio->block || xio->sectcnt) 1994 return (EINVAL); 1995 break; 1996 1997 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1998 case XYCMD_WR: 1999 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2000 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2001 return (EINVAL); 2002 break; 2003 2004 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2005 return (EINVAL); 2006 2007 break; 2008 2009 default: 2010 return (EINVAL);/* ??? */ 2011 } 2012 2013 /* create DVMA buffer for request if needed */ 2014 2015 if (xio->dlen) { 2016 dvmabuf = dvma_malloc(xio->dlen); 2017 if (xio->cmd == XYCMD_WR) { 2018 if (err = copyin(xio->dptr, dvmabuf, xio->dlen)) { 2019 dvma_free(dvmabuf, xio->dlen); 2020 return (err); 2021 } 2022 } 2023 } 2024 /* do it! */ 2025 2026 err = 0; 2027 xycsc = xy->parent; 2028 s = splbio(); 2029 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2030 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2031 if (rqno == XY_ERR_FAIL) { 2032 err = EIO; 2033 goto done; 2034 } 2035 xio->errno = xycsc->ciorq->errno; 2036 xio->tries = xycsc->ciorq->tries; 2037 XYC_DONE(xycsc, dummy); 2038 2039 if (xio->cmd == XYCMD_RD) 2040 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2041 2042 done: 2043 splx(s); 2044 if (dvmabuf) 2045 dvma_free(dvmabuf, xio->dlen); 2046 return (err); 2047 } 2048 2049 /* 2050 * xyc_e2str: convert error code number into an error string 2051 */ 2052 char * 2053 xyc_e2str(no) 2054 int no; 2055 { 2056 switch (no) { 2057 case XY_ERR_FAIL: 2058 return ("Software fatal error"); 2059 case XY_ERR_DERR: 2060 return ("DOUBLE ERROR"); 2061 case XY_ERR_AOK: 2062 return ("Successful completion"); 2063 case XY_ERR_IPEN: 2064 return("Interrupt pending"); 2065 case XY_ERR_BCFL: 2066 return("Busy conflict"); 2067 case XY_ERR_TIMO: 2068 return("Operation timeout"); 2069 case XY_ERR_NHDR: 2070 return("Header not found"); 2071 case XY_ERR_HARD: 2072 return("Hard ECC error"); 2073 case XY_ERR_ICYL: 2074 return("Illegal cylinder address"); 2075 case XY_ERR_ISEC: 2076 return("Illegal sector address"); 2077 case XY_ERR_SMAL: 2078 return("Last sector too small"); 2079 case XY_ERR_SACK: 2080 return("Slave ACK error (non-existent memory)"); 2081 case XY_ERR_CHER: 2082 return("Cylinder and head/header error"); 2083 case XY_ERR_SRTR: 2084 return("Auto-seek retry successful"); 2085 case XY_ERR_WPRO: 2086 return("Write-protect error"); 2087 case XY_ERR_UIMP: 2088 return("Unimplemented command"); 2089 case XY_ERR_DNRY: 2090 return("Drive not ready"); 2091 case XY_ERR_SZER: 2092 return("Sector count zero"); 2093 case XY_ERR_DFLT: 2094 return("Drive faulted"); 2095 case XY_ERR_ISSZ: 2096 return("Illegal sector size"); 2097 case XY_ERR_SLTA: 2098 return("Self test A"); 2099 case XY_ERR_SLTB: 2100 return("Self test B"); 2101 case XY_ERR_SLTC: 2102 return("Self test C"); 2103 case XY_ERR_SOFT: 2104 return("Soft ECC error"); 2105 case XY_ERR_SFOK: 2106 return("Soft ECC error recovered"); 2107 case XY_ERR_IHED: 2108 return("Illegal head"); 2109 case XY_ERR_DSEQ: 2110 return("Disk sequencer error"); 2111 case XY_ERR_SEEK: 2112 return("Seek error"); 2113 default: 2114 return ("Unknown error"); 2115 } 2116 } 2117 2118 int 2119 xyc_entoact(errno) 2120 2121 int errno; 2122 2123 { 2124 switch (errno) { 2125 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2126 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2127 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2128 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2129 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2130 2131 return(XY_ERA_PROG); /* program error ! */ 2132 2133 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2134 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2135 case XY_ERR_SOFT: 2136 2137 return(XY_ERA_HARD); /* hard error, retry */ 2138 2139 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2140 2141 return(XY_ERA_RSET); /* hard error reset */ 2142 2143 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2144 2145 return(XY_ERA_SOFT); /* an FYI error */ 2146 2147 case XY_ERR_WPRO: 2148 2149 return(XY_ERA_WPRO); /* write protect */ 2150 } 2151 2152 return(XY_ERA_PROG); /* ??? */ 2153 } 2154
Indexes created Mon Sep 29 21:09:56 GMT 2025