xy.c revision 1.3
1 /* $NetBSD: xy.c,v 1.3 1996/01/13 03:50:09 chuck 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 1.3 1996/01/13 03:50:09 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/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 cfdriver xyccd = { 192 NULL, "xyc", xycmatch, xycattach, DV_DULL, sizeof(struct xyc_softc) 193 }; 194 195 struct cfdriver xycd = { 196 NULL, "xy", xymatch, xyattach, DV_DISK, sizeof(struct xy_softc) 197 }; 198 199 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 200 int driveno; /* unit number */ 201 char *dvmabuf; /* scratch buffer for reading disk label */ 202 int fullmode; /* submit mode */ 203 int booting; /* are we booting or not? */ 204 }; 205 206 /* 207 * dkdriver 208 */ 209 210 struct dkdriver xydkdriver = { xystrategy }; 211 212 /* 213 * start: disk label fix code (XXX) 214 */ 215 216 static void *xy_labeldata; 217 218 static void 219 xydummystrat(bp) 220 struct buf *bp; 221 { 222 if (bp->b_bcount != XYFM_BPS) 223 panic("xydummystrat"); 224 bcopy(xy_labeldata, bp->b_un.b_addr, XYFM_BPS); 225 bp->b_flags |= B_DONE; 226 bp->b_flags &= ~B_BUSY; 227 } 228 229 int 230 xygetdisklabel(xy, b) 231 struct xy_softc *xy; 232 void *b; 233 { 234 char *err; 235 struct sun_disklabel *sdl; 236 237 /* We already have the label data in `b'; setup for dummy strategy */ 238 xy_labeldata = b; 239 240 /* Required parameter for readdisklabel() */ 241 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 242 243 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 244 xydummystrat, 245 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 246 if (err) { 247 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 248 return(XY_ERR_FAIL); 249 } 250 251 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 252 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 253 if (sdl->sl_magic == SUN_DKMAGIC) 254 xy->pcyl = sdl->sl_pcyl; 255 else { 256 printf("%s: WARNING: no `pcyl' in disk label.\n", 257 xy->sc_dev.dv_xname); 258 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 259 xy->sc_dk.dk_label->d_acylinders; 260 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 261 xy->sc_dev.dv_xname, xy->pcyl); 262 } 263 264 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 265 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 266 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 267 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 268 xy->sectpercyl = xy->nhead * xy->nsect; 269 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 270 * sun->bsd */ 271 return(XY_ERR_AOK); 272 } 273 274 /* 275 * end: disk label fix code (XXX) 276 */ 277 278 /* 279 * a u t o c o n f i g f u n c t i o n s 280 */ 281 282 /* 283 * xycmatch: determine if xyc is present or not. we do a 284 * soft reset to detect the xyc. 285 */ 286 287 int xycmatch(parent, match, aux) 288 struct device *parent; 289 void *match, *aux; 290 { 291 struct cfdata *cf = match; 292 struct confargs *ca = aux; 293 int x; 294 295 if (ca->ca_bustype != BUS_VME16) 296 return (0); 297 298 /* Default interrupt priority always splbio==2 */ 299 if (ca->ca_intpri == -1) 300 ca->ca_intpri = 2; 301 302 x = bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1); 303 if (x == -1) 304 return (0); 305 306 return (1); 307 } 308 309 /* 310 * xycattach: attach controller 311 */ 312 void 313 xycattach(parent, self, aux) 314 struct device *parent, *self; 315 void *aux; 316 317 { 318 struct xyc_softc *xyc = (void *) self; 319 struct confargs *ca = aux; 320 struct xyc_attach_args xa; 321 int lcv, err, pri, res, pbsz; 322 void *tmp, *tmp2; 323 u_long ultmp; 324 325 /* get addressing and intr level stuff from autoconfig and load it 326 * into our xyc_softc. */ 327 328 xyc->xyc = (struct xyc *) 329 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 330 xyc->ipl = ca->ca_intpri; 331 xyc->vector = ca->ca_intvec; 332 xyc->no_ols = 0; /* XXX should be from config */ 333 334 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 335 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 336 337 /* 338 * allocate and zero buffers 339 * check boundaries of the KVA's ... all IOPBs must reside in 340 * the same 64K region. 341 */ 342 343 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 344 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 345 ultmp = (u_long) tmp; 346 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 347 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 348 dvma_free(tmp2, pbsz); 349 ultmp = (u_long) tmp; 350 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 351 printf("%s: can't alloc IOPB mem in 64K\n", 352 xyc->sc_dev.dv_xname); 353 return; 354 } 355 } 356 xyc->iopbase = tmp; 357 bzero(xyc->iopbase, pbsz); 358 xyc->dvmaiopb = (struct xy_iopb *) 359 dvma_kvtopa((long) xyc->iopbase, BUS_VME16); 360 xyc->reqs = (struct xy_iorq *) 361 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 362 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 363 if (xyc->reqs == NULL) 364 panic("xyc malloc"); 365 366 /* 367 * init iorq to iopb pointers, and non-zero fields in the 368 * iopb which never change. 369 */ 370 371 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 372 xyc->xy_chain[lcv] = NULL; 373 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 374 xyc->iopbase[lcv].asr = 1; /* always the same */ 375 xyc->iopbase[lcv].eef = 1; /* always the same */ 376 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 377 xyc->iopbase[lcv].aud = 1; /* always the same */ 378 xyc->iopbase[lcv].relo = 1; /* always the same */ 379 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 380 } 381 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 382 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 383 xyc->xy_hand = 0; 384 385 /* read controller parameters and insure we have a 450/451 */ 386 387 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 388 res = xyc->ciopb->ctyp; 389 XYC_DONE(xyc, err); 390 if (res != XYCT_450) { 391 if (err) 392 printf(": %s: ", xyc_e2str(err)); 393 printf(": doesn't identify as a 450/451\n"); 394 return; 395 } 396 printf(": Xylogics 450/451"); 397 if (xyc->no_ols) 398 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 399 printf("\n"); 400 if (err) { 401 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 402 xyc_e2str(err)); 403 return; 404 } 405 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 406 printf("%s: 24 bit addressing turned off\n", 407 xyc->sc_dev.dv_xname); 408 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 409 printf("to enable 24 bit mode and this driver\n"); 410 return; 411 } 412 413 /* link in interrupt with higher level software */ 414 isr_add_vectored(xycintr, (void *)xyc, 415 ca->ca_intpri, ca->ca_intvec); 416 evcnt_attach(&xyc->sc_dev, "intr", &xyc->sc_intrcnt); 417 418 /* now we must look for disks using autoconfig */ 419 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 420 xa.fullmode = XY_SUB_POLL; 421 xa.booting = 1; 422 423 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 424 (void) config_found(self, (void *) &xa, NULL); 425 426 dvma_free(xa.dvmabuf, XYFM_BPS); 427 428 /* start the watchdog clock */ 429 timeout(xyc_tick, xyc, XYC_TICKCNT); 430 } 431 432 /* 433 * xymatch: probe for disk. 434 * 435 * note: we almost always say disk is present. this allows us to 436 * spin up and configure a disk after the system is booted (we can 437 * call xyattach!). 438 */ 439 int 440 xymatch(parent, match, aux) 441 struct device *parent; 442 void *match, *aux; 443 444 { 445 struct xyc_softc *xyc = (void *) parent; 446 struct cfdata *cf = match; 447 struct xyc_attach_args *xa = aux; 448 449 /* looking for autoconf wildcard or exact match */ 450 451 if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != xa->driveno) 452 return 0; 453 454 return 1; 455 456 } 457 458 /* 459 * xyattach: attach a disk. this can be called from autoconf and also 460 * from xyopen/xystrategy. 461 */ 462 void 463 xyattach(parent, self, aux) 464 struct device *parent, *self; 465 void *aux; 466 467 { 468 struct xy_softc *xy = (void *) self, *oxy; 469 struct xyc_softc *xyc = (void *) parent; 470 struct xyc_attach_args *xa = aux; 471 int res, err, spt, mb, blk, lcv, fmode, s, newstate; 472 struct dkbad *dkb; 473 struct bootpath *bp; 474 475 /* 476 * Always re-initialize the disk structure. We want statistics 477 * to start with a clean slate. 478 */ 479 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 480 xy->sc_dk.dk_driver = &xydkdriver; 481 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 482 483 /* if booting, init the xy_softc */ 484 485 if (xa->booting) { 486 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 487 xy->flags = 0; 488 xy->parent = xyc; 489 490 /* init queue of waiting bufs */ 491 492 xy->xyq.b_active = 0; 493 xy->xyq.b_actf = 0; 494 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 495 496 xy->xyrq = &xyc->reqs[xa->driveno]; 497 498 } 499 xy->xy_drive = xa->driveno; 500 fmode = xa->fullmode; 501 xyc->sc_drives[xa->driveno] = xy; 502 503 /* if not booting, make sure we are the only process in the attach for 504 * this drive. if locked out, sleep on it. */ 505 506 if (!xa->booting) { 507 s = splbio(); 508 while (xy->state == XY_DRIVE_ATTACHING) { 509 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 510 splx(s); 511 return; 512 } 513 } 514 printf("%s at %s", 515 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 516 } 517 /* we now have control */ 518 519 xy->state = XY_DRIVE_ATTACHING; 520 newstate = XY_DRIVE_UNKNOWN; 521 522 /* first try and reset the drive */ 523 524 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 525 XYC_DONE(xyc, err); 526 if (err == XY_ERR_DNRY) { 527 printf(" drive %d: off-line\n", xa->driveno); 528 goto done; 529 } 530 if (err) { 531 printf(": ERROR 0x%02x (%s)\n", err, xyc_e2str(err)); 532 goto done; 533 } 534 printf(" drive %d: ready", xa->driveno); 535 536 /* 537 * now set drive parameters (to semi-bogus values) so we can read the 538 * disk label. 539 */ 540 xy->pcyl = xy->ncyl = 1; 541 xy->acyl = 0; 542 xy->nhead = 1; 543 xy->nsect = 1; 544 xy->sectpercyl = 1; 545 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 546 xy->dkb.bt_bad[lcv].bt_cyl = 547 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 548 549 /* read disk label */ 550 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 551 xy->drive_type++) { 552 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 553 xa->dvmabuf, fmode); 554 XYC_DONE(xyc, err); 555 if (err == XY_ERR_AOK) break; 556 } 557 558 if (err != XY_ERR_AOK) { 559 printf("\n%s: reading disk label failed: %s\n", 560 xy->sc_dev.dv_xname, xyc_e2str(err)); 561 goto done; 562 } 563 printf(" (drive type %d)\n", xy->drive_type); 564 565 newstate = XY_DRIVE_NOLABEL; 566 567 xy->hw_spt = spt = 0; /* XXX needed ? */ 568 /* Attach the disk: must be before getdisklabel to malloc label */ 569 disk_attach(&xy->sc_dk); 570 571 if (xygetdisklabel(xy, xa->dvmabuf) != XY_ERR_AOK) 572 goto done; 573 574 /* inform the user of what is up */ 575 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 576 xa->dvmabuf, xy->pcyl); 577 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 578 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 579 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 580 XYFM_BPS); 581 582 /* 583 * 450/451 stupidity: the drive type is encoded into the format 584 * of the disk. the drive type in the IOPB must match the drive 585 * type in the format, or you will not be able to do I/O to the 586 * disk (you get header not found errors). if you have two drives 587 * of different sizes that have the same drive type in their 588 * formatting then you are out of luck. 589 * 590 * this problem was corrected in the 753/7053. 591 */ 592 593 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 594 oxy = xyc->sc_drives[lcv]; 595 if (oxy == NULL || oxy == xy) continue; 596 if (oxy->drive_type != xy->drive_type) continue; 597 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 598 xy->nhead != oxy->nhead) { 599 printf("%s: %s and %s must be the same size!\n", 600 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 601 oxy->sc_dev.dv_xname); 602 panic("xy drive size mismatch"); 603 } 604 } 605 606 607 /* now set the real drive parameters! */ 608 609 blk = (xy->nsect - 1) + 610 ((xy->nhead - 1) * xy->nsect) + 611 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 612 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 613 XYC_DONE(xyc, err); 614 if (err) { 615 printf("%s: write drive size failed: %s\n", 616 xy->sc_dev.dv_xname, xyc_e2str(err)); 617 goto done; 618 } 619 newstate = XY_DRIVE_ONLINE; 620 621 /* 622 * read bad144 table. this table resides on the first sector of the 623 * last track of the disk (i.e. second cyl of "acyl" area). 624 */ 625 626 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 627 /* last cyl */ 628 (xy->nhead - 1) * xy->nsect; /* last head */ 629 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 630 xa->dvmabuf, fmode); 631 XYC_DONE(xyc, err); 632 if (err) { 633 printf("%s: reading bad144 failed: %s\n", 634 xy->sc_dev.dv_xname, xyc_e2str(err)); 635 goto done; 636 } 637 638 /* check dkbad for sanity */ 639 dkb = (struct dkbad *) xa->dvmabuf; 640 for (lcv = 0; lcv < 126; lcv++) { 641 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 642 dkb->bt_bad[lcv].bt_cyl == 0) && 643 dkb->bt_bad[lcv].bt_trksec == 0xffff) 644 continue; /* blank */ 645 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 646 break; 647 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 648 break; 649 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 650 break; 651 } 652 if (lcv != 126) { 653 printf("%s: warning: invalid bad144 sector!\n", 654 xy->sc_dev.dv_xname); 655 } else { 656 bcopy(xa->dvmabuf, &xy->dkb, XYFM_BPS); 657 } 658 659 dk_establish(&xy->sc_dk, &xy->sc_dev); /* XXX */ 660 661 done: 662 xy->state = newstate; 663 if (!xa->booting) { 664 wakeup(&xy->state); 665 splx(s); 666 } 667 } 668 669 /* 670 * end of autoconfig functions 671 */ 672 673 /* 674 * { b , c } d e v s w f u n c t i o n s 675 */ 676 677 /* 678 * xyclose: close device 679 */ 680 int 681 xyclose(dev, flag, fmt) 682 dev_t dev; 683 int flag, fmt; 684 685 { 686 struct xy_softc *xy = xycd.cd_devs[DISKUNIT(dev)]; 687 int part = DISKPART(dev); 688 689 /* clear mask bits */ 690 691 switch (fmt) { 692 case S_IFCHR: 693 xy->sc_dk.dk_copenmask &= ~(1 << part); 694 break; 695 case S_IFBLK: 696 xy->sc_dk.dk_bopenmask &= ~(1 << part); 697 break; 698 } 699 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 700 701 return 0; 702 } 703 704 /* 705 * xydump: crash dump system 706 */ 707 int 708 xydump(dev) 709 dev_t dev; 710 711 { 712 int unit, part; 713 struct xy_softc *xy; 714 715 unit = DISKUNIT(dev); 716 if (unit >= xycd.cd_ndevs) 717 return ENXIO; 718 part = DISKPART(dev); 719 720 xy = xycd.cd_devs[unit]; 721 722 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 723 'a' + part); 724 725 return ENXIO; 726 727 /* outline: globals: "dumplo" == sector number of partition to start 728 * dump at (convert to physical sector with partition table) 729 * "dumpsize" == size of dump in clicks "physmem" == size of physical 730 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 731 * physmem) 732 * 733 * dump a copy of physical memory to the dump device starting at sector 734 * "dumplo" in the swap partition (make sure > 0). map in pages as 735 * we go. use polled I/O. 736 * 737 * XXX how to handle NON_CONTIG? */ 738 739 } 740 741 /* 742 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 743 */ 744 int 745 xyioctl(dev, command, addr, flag, p) 746 dev_t dev; 747 u_long command; 748 caddr_t addr; 749 int flag; 750 struct proc *p; 751 752 { 753 struct xy_softc *xy; 754 struct xd_iocmd *xio; 755 int error, s, unit; 756 757 unit = DISKUNIT(dev); 758 759 if (unit >= xycd.cd_ndevs || (xy = xycd.cd_devs[unit]) == NULL) 760 return (ENXIO); 761 762 /* switch on ioctl type */ 763 764 switch (command) { 765 case DIOCSBAD: /* set bad144 info */ 766 if ((flag & FWRITE) == 0) 767 return EBADF; 768 s = splbio(); 769 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 770 splx(s); 771 return 0; 772 773 case DIOCGDINFO: /* get disk label */ 774 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 775 return 0; 776 777 case DIOCGPART: /* get partition info */ 778 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 779 ((struct partinfo *) addr)->part = 780 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 781 return 0; 782 783 case DIOCSDINFO: /* set disk label */ 784 if ((flag & FWRITE) == 0) 785 return EBADF; 786 error = setdisklabel(xy->sc_dk.dk_label, 787 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 788 xy->sc_dk.dk_cpulabel); 789 if (error == 0) { 790 if (xy->state == XY_DRIVE_NOLABEL) 791 xy->state = XY_DRIVE_ONLINE; 792 } 793 return error; 794 795 case DIOCWLABEL: /* change write status of disk label */ 796 if ((flag & FWRITE) == 0) 797 return EBADF; 798 if (*(int *) addr) 799 xy->flags |= XY_WLABEL; 800 else 801 xy->flags &= ~XY_WLABEL; 802 return 0; 803 804 case DIOCWDINFO: /* write disk label */ 805 if ((flag & FWRITE) == 0) 806 return EBADF; 807 error = setdisklabel(xy->sc_dk.dk_label, 808 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 809 xy->sc_dk.dk_cpulabel); 810 if (error == 0) { 811 if (xy->state == XY_DRIVE_NOLABEL) 812 xy->state = XY_DRIVE_ONLINE; 813 814 /* Simulate opening partition 0 so write succeeds. */ 815 xy->sc_dk.dk_openmask |= (1 << 0); 816 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 817 xystrategy, xy->sc_dk.dk_label, 818 xy->sc_dk.dk_cpulabel); 819 xy->sc_dk.dk_openmask = 820 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 821 } 822 return error; 823 824 case DIOSXDCMD: 825 xio = (struct xd_iocmd *) addr; 826 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 827 return (error); 828 return (xyc_ioctlcmd(xy, dev, xio)); 829 830 default: 831 return ENOTTY; 832 } 833 } 834 835 /* 836 * xyopen: open drive 837 */ 838 839 int 840 xyopen(dev, flag, fmt) 841 dev_t dev; 842 int flag, fmt; 843 844 { 845 int unit, part; 846 struct xy_softc *xy; 847 struct xyc_attach_args xa; 848 849 /* first, could it be a valid target? */ 850 851 unit = DISKUNIT(dev); 852 if (unit >= xycd.cd_ndevs || (xy = xycd.cd_devs[unit]) == NULL) 853 return (ENXIO); 854 part = DISKPART(dev); 855 856 /* do we need to attach the drive? */ 857 858 if (xy->state == XY_DRIVE_UNKNOWN) { 859 xa.driveno = xy->xy_drive; 860 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 861 xa.fullmode = XY_SUB_WAIT; 862 xa.booting = 0; 863 xyattach((struct device *) xy->parent, 864 (struct device *) xy, &xa); 865 dvma_free(xa.dvmabuf, XYFM_BPS); 866 if (xy->state == XY_DRIVE_UNKNOWN) { 867 return (EIO); 868 } 869 } 870 /* check for partition */ 871 872 if (part != RAW_PART && 873 (part >= xy->sc_dk.dk_label->d_npartitions || 874 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 875 return (ENXIO); 876 } 877 /* set open masks */ 878 879 switch (fmt) { 880 case S_IFCHR: 881 xy->sc_dk.dk_copenmask |= (1 << part); 882 break; 883 case S_IFBLK: 884 xy->sc_dk.dk_bopenmask |= (1 << part); 885 break; 886 } 887 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 888 889 return 0; 890 } 891 892 int 893 xyread(dev, uio) 894 dev_t dev; 895 struct uio *uio; 896 { 897 898 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 899 } 900 901 int 902 xywrite(dev, uio) 903 dev_t dev; 904 struct uio *uio; 905 { 906 907 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 908 } 909 910 911 /* 912 * xysize: return size of a partition for a dump 913 */ 914 915 int 916 xysize(dev) 917 dev_t dev; 918 919 { 920 struct xy_softc *xysc; 921 int unit, part, size; 922 923 /* valid unit? try an open */ 924 925 if (xyopen(dev, 0, S_IFBLK) != 0) 926 return (-1); 927 928 /* do it */ 929 930 xysc = xycd.cd_devs[DISKUNIT(dev)]; 931 part = DISKPART(dev); 932 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 933 size = -1; /* only give valid size for swap partitions */ 934 else 935 size = xysc->sc_dk.dk_label->d_partitions[part].p_size; 936 if (xyclose(dev, 0, S_IFBLK) != 0) 937 return -1; 938 return size; 939 } 940 941 /* 942 * xystrategy: buffering system interface to xy. 943 */ 944 945 void 946 xystrategy(bp) 947 struct buf *bp; 948 949 { 950 struct xy_softc *xy; 951 struct xyc_softc *parent; 952 struct buf *wq; 953 int s, unit; 954 struct xyc_attach_args xa; 955 956 unit = DISKUNIT(bp->b_dev); 957 958 /* check for live device */ 959 960 if (unit >= xycd.cd_ndevs || (xy = xycd.cd_devs[unit]) == 0 || 961 bp->b_blkno < 0 || 962 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 963 bp->b_error = EINVAL; 964 goto bad; 965 } 966 /* do we need to attach the drive? */ 967 968 if (xy->state == XY_DRIVE_UNKNOWN) { 969 xa.driveno = xy->xy_drive; 970 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 971 xa.fullmode = XY_SUB_WAIT; 972 xa.booting = 0; 973 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 974 dvma_free(xa.dvmabuf, XYFM_BPS); 975 if (xy->state == XY_DRIVE_UNKNOWN) { 976 bp->b_error = EIO; 977 goto bad; 978 } 979 } 980 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 981 /* no I/O to unlabeled disks, unless raw partition */ 982 bp->b_error = EIO; 983 goto bad; 984 } 985 /* short circuit zero length request */ 986 987 if (bp->b_bcount == 0) 988 goto done; 989 990 /* check bounds with label (disksubr.c). Determine the size of the 991 * transfer, and make sure it is within the boundaries of the 992 * partition. Adjust transfer if needed, and signal errors or early 993 * completion. */ 994 995 if (bounds_check_with_label(bp, xy->sc_dk.dk_label, 996 (xy->flags & XY_WLABEL) != 0) <= 0) 997 goto done; 998 999 /* 1000 * now we know we have a valid buf structure that we need to do I/O 1001 * on. 1002 */ 1003 1004 s = splbio(); /* protect the queues */ 1005 1006 disksort(&xy->xyq, bp); 1007 1008 /* start 'em up */ 1009 1010 xyc_start(xy->parent, NULL); 1011 1012 /* Instrumentation. */ 1013 disk_busy(&xy->sc_dk); 1014 1015 /* done! */ 1016 1017 splx(s); 1018 return; 1019 1020 bad: /* tells upper layers we have an error */ 1021 bp->b_flags |= B_ERROR; 1022 done: /* tells upper layers we are done with this 1023 * buf */ 1024 bp->b_resid = bp->b_bcount; 1025 biodone(bp); 1026 } 1027 /* 1028 * end of {b,c}devsw functions 1029 */ 1030 1031 /* 1032 * i n t e r r u p t f u n c t i o n 1033 * 1034 * xycintr: hardware interrupt. 1035 */ 1036 int 1037 xycintr(v) 1038 void *v; 1039 1040 { 1041 struct xyc_softc *xycsc = v; 1042 struct xy_softc *xy; 1043 struct buf *bp; 1044 1045 /* kick the event counter */ 1046 1047 xycsc->sc_intrcnt.ev_count++; 1048 1049 /* remove as many done IOPBs as possible */ 1050 1051 xyc_remove_iorq(xycsc); 1052 1053 /* start any iorq's already waiting */ 1054 1055 xyc_start(xycsc, NULL); 1056 1057 return (1); 1058 } 1059 /* 1060 * end of interrupt function 1061 */ 1062 1063 /* 1064 * i n t e r n a l f u n c t i o n s 1065 */ 1066 1067 /* 1068 * xyc_rqinit: fill out the fields of an I/O request 1069 */ 1070 1071 inline void 1072 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1073 struct xy_iorq *rq; 1074 struct xyc_softc *xyc; 1075 struct xy_softc *xy; 1076 int md; 1077 u_long blk; 1078 int cnt; 1079 caddr_t db; 1080 struct buf *bp; 1081 { 1082 rq->xyc = xyc; 1083 rq->xy = xy; 1084 rq->ttl = XYC_MAXTTL + 10; 1085 rq->mode = md; 1086 rq->tries = rq->errno = rq->lasterror = 0; 1087 rq->blockno = blk; 1088 rq->sectcnt = cnt; 1089 rq->dbuf = rq->dbufbase = db; 1090 rq->buf = bp; 1091 } 1092 1093 /* 1094 * xyc_rqtopb: load up an IOPB based on an iorq 1095 */ 1096 1097 void 1098 xyc_rqtopb(iorq, iopb, cmd, subfun) 1099 struct xy_iorq *iorq; 1100 struct xy_iopb *iopb; 1101 int cmd, subfun; 1102 1103 { 1104 u_long block, dp; 1105 1106 /* normal IOPB case, standard stuff */ 1107 1108 /* chain bit handled later */ 1109 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1110 iopb->com = cmd; 1111 iopb->errno = 0; 1112 iopb->errs = 0; 1113 iopb->done = 0; 1114 if (iorq->xy) { 1115 iopb->unit = iorq->xy->xy_drive; 1116 iopb->dt = iorq->xy->drive_type; 1117 } else { 1118 iopb->unit = 0; 1119 iopb->dt = 0; 1120 } 1121 block = iorq->blockno; 1122 if (iorq->xy == NULL || block == 0) { 1123 iopb->sect = iopb->head = iopb->cyl = 0; 1124 } else { 1125 iopb->sect = block % iorq->xy->nsect; 1126 block = block / iorq->xy->nsect; 1127 iopb->head = block % iorq->xy->nhead; 1128 block = block / iorq->xy->nhead; 1129 iopb->cyl = block; 1130 } 1131 iopb->scnt = iorq->sectcnt; 1132 dp = dvma_kvtopa((long)iorq->dbuf, BUS_VME16); 1133 if (iorq->dbuf == NULL) { 1134 iopb->dataa = 0; 1135 iopb->datar = 0; 1136 } else { 1137 iopb->dataa = (dp & 0xffff); 1138 iopb->datar = ((dp & 0xff0000) >> 16); 1139 } 1140 iopb->subfn = subfun; 1141 } 1142 1143 1144 /* 1145 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1146 */ 1147 1148 int 1149 xyc_unbusy(xyc, del) 1150 1151 struct xyc *xyc; 1152 int del; 1153 1154 { 1155 while (del-- > 0) { 1156 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1157 break; 1158 DELAY(1); 1159 } 1160 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1161 } 1162 1163 /* 1164 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1165 * note that NORM requests are handled seperately. 1166 */ 1167 int 1168 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1169 struct xyc_softc *xycsc; 1170 int cmd, subfn, unit, block, scnt; 1171 char *dptr; 1172 int fullmode; 1173 1174 { 1175 int submode = XY_STATE(fullmode), retry; 1176 u_long dp; 1177 struct xy_iorq *iorq = xycsc->ciorq; 1178 struct xy_iopb *iopb = xycsc->ciopb; 1179 1180 /* 1181 * is someone else using the control iopq wait for it if we can 1182 */ 1183 start: 1184 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1185 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1186 return(XY_ERR_FAIL); 1187 goto start; 1188 } 1189 1190 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1191 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1192 iorq->mode = XY_SUB_FREE; 1193 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1194 } 1195 1196 /* init iorq/iopb */ 1197 1198 xyc_rqinit(iorq, xycsc, 1199 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1200 fullmode, block, scnt, dptr, NULL); 1201 1202 /* load IOPB from iorq */ 1203 1204 xyc_rqtopb(iorq, iopb, cmd, subfn); 1205 1206 /* submit it for processing */ 1207 1208 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1209 1210 return(XY_ERR_AOK); 1211 } 1212 1213 /* 1214 * xyc_startbuf 1215 * start a buffer for running 1216 */ 1217 1218 int 1219 xyc_startbuf(xycsc, xysc, bp) 1220 struct xyc_softc *xycsc; 1221 struct xy_softc *xysc; 1222 struct buf *bp; 1223 1224 { 1225 int partno; 1226 struct xy_iorq *iorq; 1227 struct xy_iopb *iopb; 1228 u_long block, dp; 1229 caddr_t dbuf; 1230 1231 iorq = xysc->xyrq; 1232 iopb = iorq->iopb; 1233 1234 /* get buf */ 1235 1236 if (bp == NULL) 1237 panic("xyc_startbuf null buf"); 1238 1239 partno = DISKPART(bp->b_dev); 1240 #ifdef XYC_DEBUG 1241 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1242 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1243 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1244 bp->b_bcount, bp->b_data); 1245 #endif 1246 1247 /* 1248 * load request. we have to calculate the correct block number based 1249 * on partition info. 1250 * 1251 * also, note that there are two kinds of buf structures, those with 1252 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1253 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1254 * buffer which has already been mapped into DVMA space. (Not on sun3) 1255 * However, if B_PHYS is not set, then the buffer is a normal system 1256 * buffer which does *not* live in DVMA space. In that case we call 1257 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1258 * 1259 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1260 * as mapped into DVMA space, where as the bp->b_data points to its 1261 * non-DVMA mapping. 1262 * 1263 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1264 * into dvma space, only that it was remapped into the kernel. 1265 * We ALWAYS have to remap the kernel buf into DVMA space. 1266 * (It is done inexpensively, using whole segments!) 1267 */ 1268 1269 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1270 xysc->sc_dk.dk_label->d_partitions[partno].p_offset); 1271 1272 dbuf = dvma_mapin(bp->b_data, bp->b_bcount); 1273 if (dbuf == NULL) { /* out of DVMA space */ 1274 printf("%s: warning: out of DVMA space\n", 1275 xycsc->sc_dev.dv_xname); 1276 return (XY_ERR_FAIL); /* XXX: need some sort of 1277 * call-back scheme here? */ 1278 } 1279 1280 /* init iorq and load iopb from it */ 1281 1282 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1283 bp->b_bcount / XYFM_BPS, dbuf, bp); 1284 1285 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1286 1287 return (XY_ERR_AOK); 1288 } 1289 1290 1291 /* 1292 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1293 * if ok. if it fail returns an error code. type is XY_SUB_*. 1294 * 1295 * note: caller frees iorq in all cases except NORM 1296 * 1297 * return value: 1298 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1299 * WAIT: XY_AOK (success), <error-code> (failed) 1300 * POLL: <same as WAIT> 1301 * NOQ : <same as NORM> 1302 * 1303 * there are three sources for i/o requests: 1304 * [1] xystrategy: normal block I/O, using "struct buf" system. 1305 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1306 * [3] open/ioctl: these are I/O requests done in the context of a process, 1307 * and the process should block until they are done. 1308 * 1309 * software state is stored in the iorq structure. each iorq has an 1310 * iopb structure. the hardware understands the iopb structure. 1311 * every command must go through an iopb. a 450 handles one iopb at a 1312 * time, where as a 451 can take them in chains. [the 450 claims it 1313 * can handle chains, but is appears to be buggy...] iopb are allocated 1314 * in DVMA space at boot up time. each disk gets one iopb, and the 1315 * controller gets one (for POLL and WAIT commands). what happens if 1316 * the iopb is busy? for i/o type [1], the buffers are queued at the 1317 * "buff" layer and * picked up later by the interrupt routine. for case 1318 * [2] we can only be blocked if there is a WAIT type I/O request being 1319 * run. since this can only happen when we are crashing, we wait a sec 1320 * and then steal the IOPB. for case [3] the process can sleep 1321 * on the iorq free list until some iopbs are avaliable. 1322 */ 1323 1324 1325 int 1326 xyc_submit_iorq(xycsc, iorq, type) 1327 struct xyc_softc *xycsc; 1328 struct xy_iorq *iorq; 1329 int type; 1330 1331 { 1332 struct xy_iopb *iopb; 1333 u_long iopbaddr; 1334 1335 #ifdef XYC_DEBUG 1336 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1337 xycsc->sc_dev.dv_xname, iorq, type); 1338 #endif 1339 1340 /* first check and see if controller is busy */ 1341 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1342 #ifdef XYC_DEBUG 1343 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1344 #endif 1345 if (type == XY_SUB_NOQ) 1346 return (XY_ERR_FAIL); /* failed */ 1347 switch (type) { 1348 case XY_SUB_NORM: 1349 return XY_ERR_AOK; /* success */ 1350 case XY_SUB_WAIT: 1351 while (iorq->iopb->done == 0) { 1352 sleep(iorq, PRIBIO); 1353 } 1354 return (iorq->errno); 1355 case XY_SUB_POLL: /* steal controller */ 1356 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1357 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1358 panic("xyc_submit_iorq: stuck xyc"); 1359 printf("%s: stole controller\n", 1360 xycsc->sc_dev.dv_xname); 1361 break; 1362 default: 1363 panic("xyc_submit_iorq adding"); 1364 } 1365 } 1366 1367 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1368 if (iopb == NULL) { /* nothing doing? */ 1369 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1370 return(XY_ERR_AOK); 1371 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1372 } 1373 iopbaddr = dvma_kvtopa((long) iopb, BUS_VME16); 1374 1375 XYC_GO(xycsc->xyc, iopbaddr); 1376 1377 /* command now running, wrap it up */ 1378 switch (type) { 1379 case XY_SUB_NORM: 1380 case XY_SUB_NOQ: 1381 return (XY_ERR_AOK); /* success */ 1382 case XY_SUB_WAIT: 1383 while (iorq->iopb->done == 0) { 1384 sleep(iorq, PRIBIO); 1385 } 1386 return (iorq->errno); 1387 case XY_SUB_POLL: 1388 return (xyc_piodriver(xycsc, iorq)); 1389 default: 1390 panic("xyc_submit_iorq wrap up"); 1391 } 1392 panic("xyc_submit_iorq"); 1393 return 0; /* not reached */ 1394 } 1395 1396 1397 /* 1398 * xyc_chain: build a chain. return dvma address of first element in 1399 * the chain. iorq != NULL: means we only want that item on the chain. 1400 */ 1401 1402 struct xy_iopb * 1403 xyc_chain(xycsc, iorq) 1404 1405 struct xyc_softc *xycsc; 1406 struct xy_iorq *iorq; 1407 1408 { 1409 int togo, chain, hand; 1410 struct xy_iopb *iopb, *prev_iopb; 1411 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1412 1413 /* 1414 * promote control IOPB to the top 1415 */ 1416 if (iorq == NULL) { 1417 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1418 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1419 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1420 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1421 } 1422 /* 1423 * special case: if iorq != NULL then we have a POLL or WAIT request. 1424 * we let these take priority and do them first. 1425 */ 1426 if (iorq) { 1427 xycsc->xy_chain[0] = iorq; 1428 iorq->iopb->chen = 0; 1429 return(iorq->iopb); 1430 } 1431 1432 /* 1433 * NORM case: do round robin and maybe chain (if allowed and possible) 1434 */ 1435 1436 chain = 0; 1437 hand = xycsc->xy_hand; 1438 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1439 1440 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1441 1442 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1443 xycsc->iopbase[hand].done) 1444 continue; /* not ready-for-i/o */ 1445 1446 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1447 iopb = xycsc->xy_chain[chain]->iopb; 1448 iopb->chen = 0; 1449 if (chain != 0) { /* adding a link to a chain? */ 1450 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1451 prev_iopb->chen = 1; 1452 prev_iopb->nxtiopb = 0xffff & 1453 dvma_kvtopa((long) iopb, BUS_VME16); 1454 } else { /* head of chain */ 1455 iorq = xycsc->xy_chain[chain]; 1456 } 1457 chain++; 1458 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1459 } 1460 return(iorq ? iorq->iopb : NULL); 1461 } 1462 1463 /* 1464 * xyc_piodriver 1465 * 1466 * programmed i/o driver. this function takes over the computer 1467 * and drains off the polled i/o request. it returns the status of the iorq 1468 * the caller is interesting in. 1469 */ 1470 int 1471 xyc_piodriver(xycsc, iorq) 1472 struct xyc_softc *xycsc; 1473 struct xy_iorq *iorq; 1474 1475 { 1476 int nreset = 0; 1477 int retval = 0; 1478 u_long res; 1479 struct xyc *xyc = xycsc->xyc; 1480 #ifdef XYC_DEBUG 1481 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1482 #endif 1483 1484 while (iorq->iopb->done == 0) { 1485 1486 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1487 1488 /* we expect some progress soon */ 1489 if (res == XY_ERR_FAIL && nreset >= 2) { 1490 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1491 #ifdef XYC_DEBUG 1492 printf("xyc_piodriver: timeout\n"); 1493 #endif 1494 return (XY_ERR_FAIL); 1495 } 1496 if (res == XY_ERR_FAIL) { 1497 if (xyc_reset(xycsc, 0, 1498 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1499 XY_ERR_FAIL, 1500 0) == XY_ERR_FAIL) 1501 return (XY_ERR_FAIL); /* flushes all but POLL 1502 * requests, resets */ 1503 continue; 1504 } 1505 1506 xyc_remove_iorq(xycsc); /* may resubmit request */ 1507 1508 if (iorq->iopb->done == 0) 1509 xyc_start(xycsc, iorq); 1510 } 1511 1512 /* get return value */ 1513 1514 retval = iorq->errno; 1515 1516 #ifdef XYC_DEBUG 1517 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1518 iorq->errno, xyc_e2str(iorq->errno)); 1519 #endif 1520 1521 /* start up any bufs that have queued */ 1522 1523 xyc_start(xycsc, NULL); 1524 1525 return (retval); 1526 } 1527 1528 /* 1529 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1530 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1531 */ 1532 int 1533 xyc_xyreset(xycsc, xysc) 1534 struct xyc_softc *xycsc; 1535 struct xy_softc *xysc; 1536 1537 { 1538 struct xy_iopb tmpiopb; 1539 u_long addr; 1540 int del; 1541 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1542 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1543 xycsc->ciopb->ien = 0; 1544 xycsc->ciopb->com = XYCMD_RST; 1545 xycsc->ciopb->unit = xysc->xy_drive; 1546 addr = dvma_kvtopa((long) xycsc->ciopb, BUS_VME16); 1547 1548 XYC_GO(xycsc->xyc, addr); 1549 1550 del = XYC_RESETUSEC; 1551 while (del > 0) { 1552 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1553 DELAY(1); 1554 del--; 1555 } 1556 1557 if (del <= 0 || xycsc->ciopb->errs) { 1558 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1559 xyc_e2str(xycsc->ciopb->errno)); 1560 del = xycsc->xyc->xyc_rsetup; 1561 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1562 panic("xyc_reset"); 1563 } else { 1564 xycsc->xyc->xyc_csr |= XYC_IPND; /* clear IPND */ 1565 } 1566 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1567 } 1568 1569 1570 /* 1571 * xyc_reset: reset everything: requests are marked as errors except 1572 * a polled request (which is resubmitted) 1573 */ 1574 int 1575 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1576 struct xyc_softc *xycsc; 1577 int quiet, error; 1578 struct xy_iorq *blastmode; 1579 struct xy_softc *xysc; 1580 1581 { 1582 int del = 0, lcv, poll = -1, retval = XY_ERR_AOK; 1583 struct xy_iorq *iorq; 1584 1585 /* soft reset hardware */ 1586 1587 if (!quiet) 1588 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1589 del = xycsc->xyc->xyc_rsetup; 1590 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1591 if (del == XY_ERR_FAIL) { 1592 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1593 retval = XY_ERR_FAIL; 1594 } 1595 if (xysc) 1596 xyc_xyreset(xycsc, xysc); 1597 1598 /* fix queues based on "blast-mode" */ 1599 1600 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1601 iorq = &xycsc->reqs[lcv]; 1602 1603 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1604 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1605 XY_STATE(iorq->mode) != XY_SUB_NORM) 1606 /* is it active? */ 1607 continue; 1608 1609 if (blastmode == XY_RSET_ALL || 1610 blastmode != iorq) { 1611 /* failed */ 1612 iorq->errno = error; 1613 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1614 switch (XY_STATE(iorq->mode)) { 1615 case XY_SUB_NORM: 1616 iorq->buf->b_error = EIO; 1617 iorq->buf->b_flags |= B_ERROR; 1618 iorq->buf->b_resid = 1619 iorq->sectcnt * XYFM_BPS; 1620 /* Sun3: map/unmap regardless of B_PHYS */ 1621 dvma_mapout(iorq->dbufbase, 1622 iorq->buf->b_bcount); 1623 iorq->xy->xyq.b_actf = 1624 iorq->buf->b_actf; 1625 disk_unbusy(&iorq->xy->sc_dk, 1626 (iorq->buf->b_bcount - iorq->buf->b_resid)); 1627 biodone(iorq->buf); 1628 iorq->mode = XY_SUB_FREE; 1629 break; 1630 case XY_SUB_WAIT: 1631 wakeup(iorq); 1632 case XY_SUB_POLL: 1633 iorq->mode = 1634 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1635 break; 1636 } 1637 1638 } else { 1639 1640 /* resubmit, no need to do anything here */ 1641 } 1642 } 1643 1644 /* 1645 * now, if stuff is waiting, start it. 1646 * since we just reset it should go 1647 */ 1648 xyc_start(xycsc, NULL); 1649 1650 return (retval); 1651 } 1652 1653 /* 1654 * xyc_start: start waiting buffers 1655 */ 1656 1657 int 1658 xyc_start(xycsc, iorq) 1659 struct xyc_softc *xycsc; 1660 struct xy_iorq *iorq; 1661 1662 { 1663 int lcv; 1664 struct xy_softc *xy; 1665 1666 if (iorq == NULL) { 1667 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1668 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1669 if (xy->xyq.b_actf == NULL) continue; 1670 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1671 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1672 } 1673 } 1674 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1675 } 1676 1677 /* 1678 * xyc_remove_iorq: remove "done" IOPB's. 1679 */ 1680 1681 int 1682 xyc_remove_iorq(xycsc) 1683 struct xyc_softc *xycsc; 1684 1685 { 1686 int errno, rq, comm, errs; 1687 struct xyc *xyc = xycsc->xyc; 1688 u_long addr; 1689 struct xy_iopb *iopb; 1690 struct xy_iorq *iorq; 1691 struct buf *bp; 1692 1693 if (xyc->xyc_csr & XYC_DERR) { 1694 /* 1695 * DOUBLE ERROR: should never happen under normal use. This 1696 * error is so bad, you can't even tell which IOPB is bad, so 1697 * we dump them all. 1698 */ 1699 errno = XY_ERR_DERR; 1700 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1701 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1702 printf("%s: soft reset failed!\n", 1703 xycsc->sc_dev.dv_xname); 1704 panic("xyc_remove_iorq: controller DEAD"); 1705 } 1706 return (XY_ERR_AOK); 1707 } 1708 1709 /* 1710 * get iopb that is done, loop down the chain 1711 */ 1712 1713 if (xyc->xyc_csr & XYC_ERR) { 1714 xyc->xyc_csr |= XYC_ERR; /* clear error condition */ 1715 } 1716 if (xyc->xyc_csr & XYC_IPND) { 1717 xyc->xyc_csr |= XYC_IPND; /* clear interrupt */ 1718 } 1719 1720 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1721 iorq = xycsc->xy_chain[rq]; 1722 if (iorq == NULL) break; /* done ! */ 1723 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1724 continue; /* free, or done */ 1725 iopb = iorq->iopb; 1726 if (iopb->done == 0) 1727 continue; /* not done yet */ 1728 1729 comm = iopb->com; 1730 errs = iopb->errs; 1731 1732 if (errs) 1733 iorq->errno = iopb->errno; 1734 else 1735 iorq->errno = 0; 1736 1737 /* handle non-fatal errors */ 1738 1739 if (errs && 1740 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1741 continue; /* AOK: we resubmitted it */ 1742 1743 1744 /* this iorq is now done (hasn't been restarted or anything) */ 1745 1746 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1747 xyc_perror(iorq, iopb, 0); 1748 1749 /* now, if read/write check to make sure we got all the data 1750 * we needed. (this may not be the case if we got an error in 1751 * the middle of a multisector request). */ 1752 1753 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1754 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1755 /* we just successfully processed a bad144 sector 1756 * note: if we are in bad 144 mode, the pointers have 1757 * been advanced already (see above) and are pointing 1758 * at the bad144 sector. to exit bad144 mode, we 1759 * must advance the pointers 1 sector and issue a new 1760 * request if there are still sectors left to process 1761 * 1762 */ 1763 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1764 1765 /* exit b144 mode */ 1766 iorq->mode = iorq->mode & (~XY_MODE_B144); 1767 1768 if (iorq->sectcnt) { /* more to go! */ 1769 iorq->lasterror = iorq->errno = iopb->errno = 0; 1770 iopb->errs = iopb->done = 0; 1771 iorq->tries = 0; 1772 iopb->scnt = iorq->sectcnt; 1773 iopb->cyl = iorq->blockno / 1774 iorq->xy->sectpercyl; 1775 iopb->head = 1776 (iorq->blockno / iorq->xy->nhead) % 1777 iorq->xy->nhead; 1778 iopb->sect = iorq->blockno % XYFM_BPS; 1779 addr = dvma_kvtopa((long) iorq->dbuf, BUS_VME16); 1780 iopb->dataa = (addr & 0xffff); 1781 iopb->datar = ((addr & 0xff0000) >> 16); 1782 /* will resubit at end */ 1783 continue; 1784 } 1785 } 1786 /* final cleanup, totally done with this request */ 1787 1788 switch (XY_STATE(iorq->mode)) { 1789 case XY_SUB_NORM: 1790 bp = iorq->buf; 1791 if (errs) { 1792 bp->b_error = EIO; 1793 bp->b_flags |= B_ERROR; 1794 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1795 } else { 1796 bp->b_resid = 0; /* done */ 1797 } 1798 /* Sun3: map/unmap regardless of B_PHYS */ 1799 dvma_mapout(iorq->dbufbase, 1800 iorq->buf->b_bcount); 1801 iorq->mode = XY_SUB_FREE; 1802 iorq->xy->xyq.b_actf = bp->b_actf; 1803 disk_unbusy(&iorq->xy->sc_dk, 1804 (bp->b_bcount - bp->b_resid)); 1805 biodone(bp); 1806 break; 1807 case XY_SUB_WAIT: 1808 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1809 wakeup(iorq); 1810 break; 1811 case XY_SUB_POLL: 1812 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1813 break; 1814 } 1815 } 1816 1817 return (XY_ERR_AOK); 1818 } 1819 1820 /* 1821 * xyc_perror: print error. 1822 * - if still_trying is true: we got an error, retried and got a 1823 * different error. in that case lasterror is the old error, 1824 * and errno is the new one. 1825 * - if still_trying is not true, then if we ever had an error it 1826 * is in lasterror. also, if iorq->errno == 0, then we recovered 1827 * from that error (otherwise iorq->errno == iorq->lasterror). 1828 */ 1829 void 1830 xyc_perror(iorq, iopb, still_trying) 1831 struct xy_iorq *iorq; 1832 struct xy_iopb *iopb; 1833 int still_trying; 1834 1835 { 1836 1837 int error = iorq->lasterror; 1838 1839 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1840 : iorq->xyc->sc_dev.dv_xname); 1841 if (iorq->buf) 1842 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1843 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1844 printf("%s %d/%d/%d: ", 1845 (iopb->com == XYCMD_RD) ? "read" : "write", 1846 iopb->cyl, iopb->head, iopb->sect); 1847 printf("%s", xyc_e2str(error)); 1848 1849 if (still_trying) 1850 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1851 else 1852 if (iorq->errno == 0) 1853 printf(" [recovered in %d tries]", iorq->tries); 1854 1855 printf("\n"); 1856 } 1857 1858 /* 1859 * xyc_error: non-fatal error encountered... recover. 1860 * return AOK if resubmitted, return FAIL if this iopb is done 1861 */ 1862 int 1863 xyc_error(xycsc, iorq, iopb, comm) 1864 struct xyc_softc *xycsc; 1865 struct xy_iorq *iorq; 1866 struct xy_iopb *iopb; 1867 int comm; 1868 1869 { 1870 int errno = iorq->errno; 1871 int erract = xyc_entoact(errno); 1872 int oldmode, advance, i; 1873 1874 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1875 oldmode = iorq->mode; 1876 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1877 /* make xyc_start ignore us */ 1878 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1879 iorq->mode = oldmode; 1880 } 1881 /* check for read/write to a sector in bad144 table if bad: redirect 1882 * request to bad144 area */ 1883 1884 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1885 (iorq->mode & XY_MODE_B144) == 0) { 1886 advance = iorq->sectcnt - iopb->scnt; 1887 XYC_ADVANCE(iorq, advance); 1888 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1889 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1890 iorq->blockno % iorq->xy->nsect)) != -1) { 1891 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1892 * redirect */ 1893 iopb->errno = iopb->done = iopb->errs = 0; 1894 iopb->scnt = 1; 1895 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1896 /* second to last acyl */ 1897 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1898 * standard */ 1899 iopb->head = i / iorq->xy->nhead; 1900 iopb->sect = i % iorq->xy->nhead; 1901 /* will resubmit when we come out of remove_iorq */ 1902 return (XY_ERR_AOK); /* recovered! */ 1903 } 1904 } 1905 1906 /* 1907 * it isn't a bad144 sector, must be real error! see if we can retry 1908 * it? 1909 */ 1910 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1911 xyc_perror(iorq, iopb, 1); /* inform of error state 1912 * change */ 1913 iorq->lasterror = errno; 1914 1915 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1916 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1917 iorq->tries++; 1918 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1919 /* will resubmit at end of remove_iorq */ 1920 return (XY_ERR_AOK); /* recovered! */ 1921 } 1922 1923 /* failed to recover from this error */ 1924 return (XY_ERR_FAIL); 1925 } 1926 1927 /* 1928 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1929 */ 1930 void 1931 xyc_tick(arg) 1932 void *arg; 1933 1934 { 1935 struct xyc_softc *xycsc = arg; 1936 int lcv, s, reset = 0; 1937 1938 /* reduce ttl for each request if one goes to zero, reset xyc */ 1939 s = splbio(); 1940 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1941 if (xycsc->reqs[lcv].mode == 0 || 1942 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1943 continue; 1944 xycsc->reqs[lcv].ttl--; 1945 if (xycsc->reqs[lcv].ttl == 0) 1946 reset = 1; 1947 } 1948 if (reset) { 1949 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1950 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1951 } 1952 splx(s); 1953 1954 /* until next time */ 1955 1956 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1957 } 1958 1959 /* 1960 * xyc_ioctlcmd: this function provides a user level interface to the 1961 * controller via ioctl. this allows "format" programs to be written 1962 * in user code, and is also useful for some debugging. we return 1963 * an error code. called at user priority. 1964 * 1965 * XXX missing a few commands (see the 7053 driver for ideas) 1966 */ 1967 int 1968 xyc_ioctlcmd(xy, dev, xio) 1969 struct xy_softc *xy; 1970 dev_t dev; 1971 struct xd_iocmd *xio; 1972 1973 { 1974 int s, err, rqno, dummy; 1975 caddr_t dvmabuf = NULL; 1976 struct xyc_softc *xycsc; 1977 1978 /* check sanity of requested command */ 1979 1980 switch (xio->cmd) { 1981 1982 case XYCMD_NOP: /* no op: everything should be zero */ 1983 if (xio->subfn || xio->dptr || xio->dlen || 1984 xio->block || xio->sectcnt) 1985 return (EINVAL); 1986 break; 1987 1988 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1989 case XYCMD_WR: 1990 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1991 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1992 return (EINVAL); 1993 break; 1994 1995 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1996 return (EINVAL); 1997 1998 break; 1999 2000 default: 2001 return (EINVAL);/* ??? */ 2002 } 2003 2004 /* create DVMA buffer for request if needed */ 2005 2006 if (xio->dlen) { 2007 dvmabuf = dvma_malloc(xio->dlen); 2008 if (xio->cmd == XYCMD_WR) { 2009 if (err = copyin(xio->dptr, dvmabuf, xio->dlen)) { 2010 dvma_free(dvmabuf, xio->dlen); 2011 return (err); 2012 } 2013 } 2014 } 2015 /* do it! */ 2016 2017 err = 0; 2018 xycsc = xy->parent; 2019 s = splbio(); 2020 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2021 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2022 if (rqno == XY_ERR_FAIL) { 2023 err = EIO; 2024 goto done; 2025 } 2026 xio->errno = xycsc->ciorq->errno; 2027 xio->tries = xycsc->ciorq->tries; 2028 XYC_DONE(xycsc, dummy); 2029 2030 if (xio->cmd == XYCMD_RD) 2031 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2032 2033 done: 2034 splx(s); 2035 if (dvmabuf) 2036 dvma_free(dvmabuf, xio->dlen); 2037 return (err); 2038 } 2039 2040 /* 2041 * xyc_e2str: convert error code number into an error string 2042 */ 2043 char * 2044 xyc_e2str(no) 2045 int no; 2046 { 2047 switch (no) { 2048 case XY_ERR_FAIL: 2049 return ("Software fatal error"); 2050 case XY_ERR_DERR: 2051 return ("DOUBLE ERROR"); 2052 case XY_ERR_AOK: 2053 return ("Successful completion"); 2054 case XY_ERR_IPEN: 2055 return("Interrupt pending"); 2056 case XY_ERR_BCFL: 2057 return("Busy conflict"); 2058 case XY_ERR_TIMO: 2059 return("Operation timeout"); 2060 case XY_ERR_NHDR: 2061 return("Header not found"); 2062 case XY_ERR_HARD: 2063 return("Hard ECC error"); 2064 case XY_ERR_ICYL: 2065 return("Illegal cylinder address"); 2066 case XY_ERR_ISEC: 2067 return("Illegal sector address"); 2068 case XY_ERR_SMAL: 2069 return("Last sector too small"); 2070 case XY_ERR_SACK: 2071 return("Slave ACK error (non-existent memory)"); 2072 case XY_ERR_CHER: 2073 return("Cylinder and head/header error"); 2074 case XY_ERR_SRTR: 2075 return("Auto-seek retry successful"); 2076 case XY_ERR_WPRO: 2077 return("Write-protect error"); 2078 case XY_ERR_UIMP: 2079 return("Unimplemented command"); 2080 case XY_ERR_DNRY: 2081 return("Drive not ready"); 2082 case XY_ERR_SZER: 2083 return("Sector count zero"); 2084 case XY_ERR_DFLT: 2085 return("Drive faulted"); 2086 case XY_ERR_ISSZ: 2087 return("Illegal sector size"); 2088 case XY_ERR_SLTA: 2089 return("Self test A"); 2090 case XY_ERR_SLTB: 2091 return("Self test B"); 2092 case XY_ERR_SLTC: 2093 return("Self test C"); 2094 case XY_ERR_SOFT: 2095 return("Soft ECC error"); 2096 case XY_ERR_SFOK: 2097 return("Soft ECC error recovered"); 2098 case XY_ERR_IHED: 2099 return("Illegal head"); 2100 case XY_ERR_DSEQ: 2101 return("Disk sequencer error"); 2102 case XY_ERR_SEEK: 2103 return("Seek error"); 2104 default: 2105 return ("Unknown error"); 2106 } 2107 } 2108 2109 int 2110 xyc_entoact(errno) 2111 2112 int errno; 2113 2114 { 2115 switch (errno) { 2116 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2117 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2118 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2119 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2120 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2121 2122 return(XY_ERA_PROG); /* program error ! */ 2123 2124 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2125 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2126 case XY_ERR_SOFT: 2127 2128 return(XY_ERA_HARD); /* hard error, retry */ 2129 2130 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2131 2132 return(XY_ERA_RSET); /* hard error reset */ 2133 2134 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2135 2136 return(XY_ERA_SOFT); /* an FYI error */ 2137 2138 case XY_ERR_WPRO: 2139 2140 return(XY_ERA_WPRO); /* write protect */ 2141 } 2142 2143 return(XY_ERA_PROG); /* ??? */ 2144 } 2145
Indexes created Mon Sep 29 21:09:56 GMT 2025