xy.c revision 1.1
1 /* $NetBSD: xy.c,v 1.1 1995/10/30 20:58:21 gwr Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: $Id: xy.c,v 1.1 1995/10/30 20:58:21 gwr 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 /* if booting, init the xy_softc */ 476 477 if (xa->booting) { 478 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 479 xy->flags = 0; 480 xy->parent = xyc; 481 482 /* init queue of waiting bufs */ 483 484 xy->xyq.b_active = 0; 485 xy->xyq.b_actf = 0; 486 xy->xyq.b_actb = &xy->xyq.b_actf; /* XXX b_actb: not used? */ 487 488 xy->xyrq = &xyc->reqs[xa->driveno]; 489 490 } 491 xy->xy_drive = xa->driveno; 492 fmode = xa->fullmode; 493 xyc->sc_drives[xa->driveno] = xy; 494 495 /* if not booting, make sure we are the only process in the attach for 496 * this drive. if locked out, sleep on it. */ 497 498 if (!xa->booting) { 499 s = splbio(); 500 while (xy->state == XY_DRIVE_ATTACHING) { 501 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 502 splx(s); 503 return; 504 } 505 } 506 printf("%s at %s", 507 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 508 } 509 /* we now have control */ 510 511 xy->state = XY_DRIVE_ATTACHING; 512 newstate = XY_DRIVE_UNKNOWN; 513 514 /* first try and reset the drive */ 515 516 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 517 XYC_DONE(xyc, err); 518 if (err == XY_ERR_DNRY) { 519 printf(" drive %d: off-line\n", xa->driveno); 520 goto done; 521 } 522 if (err) { 523 printf(": ERROR 0x%02x (%s)\n", err, xyc_e2str(err)); 524 goto done; 525 } 526 printf(" drive %d: ready", xa->driveno); 527 528 /* 529 * now set drive parameters (to semi-bogus values) so we can read the 530 * disk label. 531 */ 532 xy->pcyl = xy->ncyl = 1; 533 xy->acyl = 0; 534 xy->nhead = 1; 535 xy->nsect = 1; 536 xy->sectpercyl = 1; 537 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 538 xy->dkb.bt_bad[lcv].bt_cyl = 539 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 540 541 /* read disk label */ 542 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 543 xy->drive_type++) { 544 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 545 xa->dvmabuf, fmode); 546 XYC_DONE(xyc, err); 547 if (err == XY_ERR_AOK) break; 548 } 549 550 if (err != XY_ERR_AOK) { 551 printf("\n%s: reading disk label failed: %s\n", 552 xy->sc_dev.dv_xname, xyc_e2str(err)); 553 goto done; 554 } 555 printf(" (drive type %d)\n", xy->drive_type); 556 557 newstate = XY_DRIVE_NOLABEL; 558 559 xy->hw_spt = spt = 0; /* XXX needed ? */ 560 if (xygetdisklabel(xy, xa->dvmabuf) != XY_ERR_AOK) 561 goto done; 562 563 /* inform the user of what is up */ 564 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 565 xa->dvmabuf, xy->pcyl); 566 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 567 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 568 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 569 XYFM_BPS); 570 571 /* 572 * 450/451 stupidity: the drive type is encoded into the format 573 * of the disk. the drive type in the IOPB must match the drive 574 * type in the format, or you will not be able to do I/O to the 575 * disk (you get header not found errors). if you have two drives 576 * of different sizes that have the same drive type in their 577 * formatting then you are out of luck. 578 * 579 * this problem was corrected in the 753/7053. 580 */ 581 582 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 583 oxy = xyc->sc_drives[lcv]; 584 if (oxy == NULL || oxy == xy) continue; 585 if (oxy->drive_type != xy->drive_type) continue; 586 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 587 xy->nhead != oxy->nhead) { 588 printf("%s: %s and %s must be the same size!\n", 589 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 590 oxy->sc_dev.dv_xname); 591 panic("xy drive size mismatch"); 592 } 593 } 594 595 596 /* now set the real drive parameters! */ 597 598 blk = (xy->nsect - 1) + 599 ((xy->nhead - 1) * xy->nsect) + 600 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 601 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 602 XYC_DONE(xyc, err); 603 if (err) { 604 printf("%s: write drive size failed: %s\n", 605 xy->sc_dev.dv_xname, xyc_e2str(err)); 606 goto done; 607 } 608 newstate = XY_DRIVE_ONLINE; 609 610 /* 611 * read bad144 table. this table resides on the first sector of the 612 * last track of the disk (i.e. second cyl of "acyl" area). 613 */ 614 615 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 616 /* last cyl */ 617 (xy->nhead - 1) * xy->nsect; /* last head */ 618 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 619 xa->dvmabuf, fmode); 620 XYC_DONE(xyc, err); 621 if (err) { 622 printf("%s: reading bad144 failed: %s\n", 623 xy->sc_dev.dv_xname, xyc_e2str(err)); 624 goto done; 625 } 626 627 /* check dkbad for sanity */ 628 dkb = (struct dkbad *) xa->dvmabuf; 629 for (lcv = 0; lcv < 126; lcv++) { 630 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 631 dkb->bt_bad[lcv].bt_cyl == 0) && 632 dkb->bt_bad[lcv].bt_trksec == 0xffff) 633 continue; /* blank */ 634 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 635 break; 636 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 637 break; 638 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 639 break; 640 } 641 if (lcv != 126) { 642 printf("%s: warning: invalid bad144 sector!\n", 643 xy->sc_dev.dv_xname); 644 } else { 645 bcopy(xa->dvmabuf, &xy->dkb, XYFM_BPS); 646 } 647 648 if (xa->booting) { 649 xy->sc_dk.dk_driver = &xydkdriver; /* link in dkdriver */ 650 } 651 652 dk_establish(&xy->sc_dk, &xy->sc_dev); 653 654 done: 655 xy->state = newstate; 656 if (!xa->booting) { 657 wakeup(&xy->state); 658 splx(s); 659 } 660 } 661 662 /* 663 * end of autoconfig functions 664 */ 665 666 /* 667 * { b , c } d e v s w f u n c t i o n s 668 */ 669 670 /* 671 * xyclose: close device 672 */ 673 int 674 xyclose(dev, flag, fmt) 675 dev_t dev; 676 int flag, fmt; 677 678 { 679 struct xy_softc *xy = xycd.cd_devs[DISKUNIT(dev)]; 680 int part = DISKPART(dev); 681 682 /* clear mask bits */ 683 684 switch (fmt) { 685 case S_IFCHR: 686 xy->sc_dk.dk_copenmask &= ~(1 << part); 687 break; 688 case S_IFBLK: 689 xy->sc_dk.dk_bopenmask &= ~(1 << part); 690 break; 691 } 692 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 693 694 return 0; 695 } 696 697 /* 698 * xydump: crash dump system 699 */ 700 int 701 xydump(dev) 702 dev_t dev; 703 704 { 705 int unit, part; 706 struct xy_softc *xy; 707 708 unit = DISKUNIT(dev); 709 if (unit >= xycd.cd_ndevs) 710 return ENXIO; 711 part = DISKPART(dev); 712 713 xy = xycd.cd_devs[unit]; 714 715 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 716 'a' + part); 717 718 return ENXIO; 719 720 /* outline: globals: "dumplo" == sector number of partition to start 721 * dump at (convert to physical sector with partition table) 722 * "dumpsize" == size of dump in clicks "physmem" == size of physical 723 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 724 * physmem) 725 * 726 * dump a copy of physical memory to the dump device starting at sector 727 * "dumplo" in the swap partition (make sure > 0). map in pages as 728 * we go. use polled I/O. 729 * 730 * XXX how to handle NON_CONTIG? */ 731 732 } 733 734 /* 735 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 736 */ 737 int 738 xyioctl(dev, command, addr, flag, p) 739 dev_t dev; 740 u_long command; 741 caddr_t addr; 742 int flag; 743 struct proc *p; 744 745 { 746 struct xy_softc *xy; 747 struct xd_iocmd *xio; 748 int error, s, unit; 749 750 unit = DISKUNIT(dev); 751 752 if (unit >= xycd.cd_ndevs || (xy = xycd.cd_devs[unit]) == NULL) 753 return (ENXIO); 754 755 /* switch on ioctl type */ 756 757 switch (command) { 758 case DIOCSBAD: /* set bad144 info */ 759 if ((flag & FWRITE) == 0) 760 return EBADF; 761 s = splbio(); 762 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 763 splx(s); 764 return 0; 765 766 case DIOCGDINFO: /* get disk label */ 767 bcopy(&xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 768 return 0; 769 770 case DIOCGPART: /* get partition info */ 771 ((struct partinfo *) addr)->disklab = &xy->sc_dk.dk_label; 772 ((struct partinfo *) addr)->part = 773 &xy->sc_dk.dk_label.d_partitions[DISKPART(dev)]; 774 return 0; 775 776 case DIOCSDINFO: /* set disk label */ 777 if ((flag & FWRITE) == 0) 778 return EBADF; 779 error = setdisklabel(&xy->sc_dk.dk_label, 780 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 781 &xy->sc_dk.dk_cpulabel); 782 if (error == 0) { 783 if (xy->state == XY_DRIVE_NOLABEL) 784 xy->state = XY_DRIVE_ONLINE; 785 } 786 return error; 787 788 case DIOCWLABEL: /* change write status of disk label */ 789 if ((flag & FWRITE) == 0) 790 return EBADF; 791 if (*(int *) addr) 792 xy->flags |= XY_WLABEL; 793 else 794 xy->flags &= ~XY_WLABEL; 795 return 0; 796 797 case DIOCWDINFO: /* write disk label */ 798 if ((flag & FWRITE) == 0) 799 return EBADF; 800 error = setdisklabel(&xy->sc_dk.dk_label, 801 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 802 &xy->sc_dk.dk_cpulabel); 803 if (error == 0) { 804 if (xy->state == XY_DRIVE_NOLABEL) 805 xy->state = XY_DRIVE_ONLINE; 806 807 /* Simulate opening partition 0 so write succeeds. */ 808 xy->sc_dk.dk_openmask |= (1 << 0); 809 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 810 xystrategy, &xy->sc_dk.dk_label, 811 &xy->sc_dk.dk_cpulabel); 812 xy->sc_dk.dk_openmask = 813 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 814 } 815 return error; 816 817 case DIOSXDCMD: 818 xio = (struct xd_iocmd *) addr; 819 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 820 return (error); 821 return (xyc_ioctlcmd(xy, dev, xio)); 822 823 default: 824 return ENOTTY; 825 } 826 } 827 828 /* 829 * xyopen: open drive 830 */ 831 832 int 833 xyopen(dev, flag, fmt) 834 dev_t dev; 835 int flag, fmt; 836 837 { 838 int unit, part; 839 struct xy_softc *xy; 840 struct xyc_attach_args xa; 841 842 /* first, could it be a valid target? */ 843 844 unit = DISKUNIT(dev); 845 if (unit >= xycd.cd_ndevs || (xy = xycd.cd_devs[unit]) == NULL) 846 return (ENXIO); 847 part = DISKPART(dev); 848 849 /* do we need to attach the drive? */ 850 851 if (xy->state == XY_DRIVE_UNKNOWN) { 852 xa.driveno = xy->xy_drive; 853 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 854 xa.fullmode = XY_SUB_WAIT; 855 xa.booting = 0; 856 xyattach((struct device *) xy->parent, 857 (struct device *) xy, &xa); 858 dvma_free(xa.dvmabuf, XYFM_BPS); 859 if (xy->state == XY_DRIVE_UNKNOWN) { 860 return (EIO); 861 } 862 } 863 /* check for partition */ 864 865 if (part != RAW_PART && 866 (part >= xy->sc_dk.dk_label.d_npartitions || 867 xy->sc_dk.dk_label.d_partitions[part].p_fstype == FS_UNUSED)) { 868 return (ENXIO); 869 } 870 /* set open masks */ 871 872 switch (fmt) { 873 case S_IFCHR: 874 xy->sc_dk.dk_copenmask |= (1 << part); 875 break; 876 case S_IFBLK: 877 xy->sc_dk.dk_bopenmask |= (1 << part); 878 break; 879 } 880 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 881 882 return 0; 883 } 884 885 int 886 xyread(dev, uio) 887 dev_t dev; 888 struct uio *uio; 889 { 890 891 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 892 } 893 894 int 895 xywrite(dev, uio) 896 dev_t dev; 897 struct uio *uio; 898 { 899 900 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 901 } 902 903 904 /* 905 * xysize: return size of a partition for a dump 906 */ 907 908 int 909 xysize(dev) 910 dev_t dev; 911 912 { 913 struct xy_softc *xysc; 914 int unit, part, size; 915 916 /* valid unit? try an open */ 917 918 if (xyopen(dev, 0, S_IFBLK) != 0) 919 return (-1); 920 921 /* do it */ 922 923 xysc = xycd.cd_devs[DISKUNIT(dev)]; 924 part = DISKPART(dev); 925 if (xysc->sc_dk.dk_label.d_partitions[part].p_fstype != FS_SWAP) 926 size = -1; /* only give valid size for swap partitions */ 927 else 928 size = xysc->sc_dk.dk_label.d_partitions[part].p_size; 929 if (xyclose(dev, 0, S_IFBLK) != 0) 930 return -1; 931 return size; 932 } 933 934 /* 935 * xystrategy: buffering system interface to xy. 936 */ 937 938 void 939 xystrategy(bp) 940 struct buf *bp; 941 942 { 943 struct xy_softc *xy; 944 struct xyc_softc *parent; 945 struct buf *wq; 946 int s, unit; 947 struct xyc_attach_args xa; 948 949 unit = DISKUNIT(bp->b_dev); 950 951 /* check for live device */ 952 953 if (unit >= xycd.cd_ndevs || (xy = xycd.cd_devs[unit]) == 0 || 954 bp->b_blkno < 0 || 955 (bp->b_bcount % xy->sc_dk.dk_label.d_secsize) != 0) { 956 bp->b_error = EINVAL; 957 goto bad; 958 } 959 /* do we need to attach the drive? */ 960 961 if (xy->state == XY_DRIVE_UNKNOWN) { 962 xa.driveno = xy->xy_drive; 963 xa.dvmabuf = (char *) dvma_malloc(XYFM_BPS); 964 xa.fullmode = XY_SUB_WAIT; 965 xa.booting = 0; 966 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 967 dvma_free(xa.dvmabuf, XYFM_BPS); 968 if (xy->state == XY_DRIVE_UNKNOWN) { 969 bp->b_error = EIO; 970 goto bad; 971 } 972 } 973 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 974 /* no I/O to unlabeled disks, unless raw partition */ 975 bp->b_error = EIO; 976 goto bad; 977 } 978 /* short circuit zero length request */ 979 980 if (bp->b_bcount == 0) 981 goto done; 982 983 /* check bounds with label (disksubr.c). Determine the size of the 984 * transfer, and make sure it is within the boundaries of the 985 * partition. Adjust transfer if needed, and signal errors or early 986 * completion. */ 987 988 if (bounds_check_with_label(bp, &xy->sc_dk.dk_label, 989 (xy->flags & XY_WLABEL) != 0) <= 0) 990 goto done; 991 992 /* 993 * now we know we have a valid buf structure that we need to do I/O 994 * on. 995 */ 996 997 s = splbio(); /* protect the queues */ 998 999 disksort(&xy->xyq, bp); 1000 1001 /* start 'em up */ 1002 1003 xyc_start(xy->parent, NULL); 1004 1005 /* done! */ 1006 1007 splx(s); 1008 return; 1009 1010 bad: /* tells upper layers we have an error */ 1011 bp->b_flags |= B_ERROR; 1012 done: /* tells upper layers we are done with this 1013 * buf */ 1014 bp->b_resid = bp->b_bcount; 1015 biodone(bp); 1016 } 1017 /* 1018 * end of {b,c}devsw functions 1019 */ 1020 1021 /* 1022 * i n t e r r u p t f u n c t i o n 1023 * 1024 * xycintr: hardware interrupt. 1025 */ 1026 int 1027 xycintr(v) 1028 void *v; 1029 1030 { 1031 struct xyc_softc *xycsc = v; 1032 struct xy_softc *xy; 1033 struct buf *bp; 1034 1035 /* kick the event counter */ 1036 1037 xycsc->sc_intrcnt.ev_count++; 1038 1039 /* remove as many done IOPBs as possible */ 1040 1041 xyc_remove_iorq(xycsc); 1042 1043 /* start any iorq's already waiting */ 1044 1045 xyc_start(xycsc, NULL); 1046 1047 return (1); 1048 } 1049 /* 1050 * end of interrupt function 1051 */ 1052 1053 /* 1054 * i n t e r n a l f u n c t i o n s 1055 */ 1056 1057 /* 1058 * xyc_rqinit: fill out the fields of an I/O request 1059 */ 1060 1061 inline void 1062 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1063 struct xy_iorq *rq; 1064 struct xyc_softc *xyc; 1065 struct xy_softc *xy; 1066 int md; 1067 u_long blk; 1068 int cnt; 1069 caddr_t db; 1070 struct buf *bp; 1071 { 1072 rq->xyc = xyc; 1073 rq->xy = xy; 1074 rq->ttl = XYC_MAXTTL + 10; 1075 rq->mode = md; 1076 rq->tries = rq->errno = rq->lasterror = 0; 1077 rq->blockno = blk; 1078 rq->sectcnt = cnt; 1079 rq->dbuf = rq->dbufbase = db; 1080 rq->buf = bp; 1081 } 1082 1083 /* 1084 * xyc_rqtopb: load up an IOPB based on an iorq 1085 */ 1086 1087 void 1088 xyc_rqtopb(iorq, iopb, cmd, subfun) 1089 struct xy_iorq *iorq; 1090 struct xy_iopb *iopb; 1091 int cmd, subfun; 1092 1093 { 1094 u_long block, dp; 1095 1096 /* normal IOPB case, standard stuff */ 1097 1098 /* chain bit handled later */ 1099 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1100 iopb->com = cmd; 1101 iopb->errno = 0; 1102 iopb->errs = 0; 1103 iopb->done = 0; 1104 if (iorq->xy) { 1105 iopb->unit = iorq->xy->xy_drive; 1106 iopb->dt = iorq->xy->drive_type; 1107 } else { 1108 iopb->unit = 0; 1109 iopb->dt = 0; 1110 } 1111 block = iorq->blockno; 1112 if (iorq->xy == NULL || block == 0) { 1113 iopb->sect = iopb->head = iopb->cyl = 0; 1114 } else { 1115 iopb->sect = block % iorq->xy->nsect; 1116 block = block / iorq->xy->nsect; 1117 iopb->head = block % iorq->xy->nhead; 1118 block = block / iorq->xy->nhead; 1119 iopb->cyl = block; 1120 } 1121 iopb->scnt = iorq->sectcnt; 1122 dp = dvma_kvtopa((long)iorq->dbuf, BUS_VME16); 1123 if (iorq->dbuf == NULL) { 1124 iopb->dataa = 0; 1125 iopb->datar = 0; 1126 } else { 1127 iopb->dataa = (dp & 0xffff); 1128 iopb->datar = ((dp & 0xff0000) >> 16); 1129 } 1130 iopb->subfn = subfun; 1131 } 1132 1133 1134 /* 1135 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1136 */ 1137 1138 int 1139 xyc_unbusy(xyc, del) 1140 1141 struct xyc *xyc; 1142 int del; 1143 1144 { 1145 while (del-- > 0) { 1146 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1147 break; 1148 DELAY(1); 1149 } 1150 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1151 } 1152 1153 /* 1154 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1155 * note that NORM requests are handled seperately. 1156 */ 1157 int 1158 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1159 struct xyc_softc *xycsc; 1160 int cmd, subfn, unit, block, scnt; 1161 char *dptr; 1162 int fullmode; 1163 1164 { 1165 int submode = XY_STATE(fullmode), retry; 1166 u_long dp; 1167 struct xy_iorq *iorq = xycsc->ciorq; 1168 struct xy_iopb *iopb = xycsc->ciopb; 1169 1170 /* 1171 * is someone else using the control iopq wait for it if we can 1172 */ 1173 start: 1174 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1175 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1176 return(XY_ERR_FAIL); 1177 goto start; 1178 } 1179 1180 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1181 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1182 iorq->mode = XY_SUB_FREE; 1183 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1184 } 1185 1186 /* init iorq/iopb */ 1187 1188 xyc_rqinit(iorq, xycsc, 1189 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1190 fullmode, block, scnt, dptr, NULL); 1191 1192 /* load IOPB from iorq */ 1193 1194 xyc_rqtopb(iorq, iopb, cmd, subfn); 1195 1196 /* submit it for processing */ 1197 1198 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1199 1200 return(XY_ERR_AOK); 1201 } 1202 1203 /* 1204 * xyc_startbuf 1205 * start a buffer for running 1206 */ 1207 1208 int 1209 xyc_startbuf(xycsc, xysc, bp) 1210 struct xyc_softc *xycsc; 1211 struct xy_softc *xysc; 1212 struct buf *bp; 1213 1214 { 1215 int partno; 1216 struct xy_iorq *iorq; 1217 struct xy_iopb *iopb; 1218 u_long block, dp; 1219 caddr_t dbuf; 1220 1221 iorq = xysc->xyrq; 1222 iopb = iorq->iopb; 1223 1224 /* get buf */ 1225 1226 if (bp == NULL) 1227 panic("xyc_startbuf null buf"); 1228 1229 partno = DISKPART(bp->b_dev); 1230 #ifdef XYC_DEBUG 1231 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1232 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1233 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1234 bp->b_bcount, bp->b_data); 1235 #endif 1236 1237 /* 1238 * load request. we have to calculate the correct block number based 1239 * on partition info. 1240 * 1241 * also, note that there are two kinds of buf structures, those with 1242 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1243 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1244 * buffer which has already been mapped into DVMA space. (Not on sun3) 1245 * However, if B_PHYS is not set, then the buffer is a normal system 1246 * buffer which does *not* live in DVMA space. In that case we call 1247 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1248 * 1249 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1250 * as mapped into DVMA space, where as the bp->b_data points to its 1251 * non-DVMA mapping. 1252 * 1253 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1254 * into dvma space, only that it was remapped into the kernel. 1255 * We ALWAYS have to remap the kernel buf into DVMA space. 1256 * (It is done inexpensively, using whole segments!) 1257 */ 1258 1259 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1260 xysc->sc_dk.dk_label.d_partitions[partno].p_offset); 1261 1262 dbuf = dvma_mapin(bp->b_data, bp->b_bcount); 1263 if (dbuf == NULL) { /* out of DVMA space */ 1264 printf("%s: warning: out of DVMA space\n", 1265 xycsc->sc_dev.dv_xname); 1266 return (XY_ERR_FAIL); /* XXX: need some sort of 1267 * call-back scheme here? */ 1268 } 1269 1270 /* init iorq and load iopb from it */ 1271 1272 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1273 bp->b_bcount / XYFM_BPS, dbuf, bp); 1274 1275 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1276 1277 return (XY_ERR_AOK); 1278 } 1279 1280 1281 /* 1282 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1283 * if ok. if it fail returns an error code. type is XY_SUB_*. 1284 * 1285 * note: caller frees iorq in all cases except NORM 1286 * 1287 * return value: 1288 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1289 * WAIT: XY_AOK (success), <error-code> (failed) 1290 * POLL: <same as WAIT> 1291 * NOQ : <same as NORM> 1292 * 1293 * there are three sources for i/o requests: 1294 * [1] xystrategy: normal block I/O, using "struct buf" system. 1295 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1296 * [3] open/ioctl: these are I/O requests done in the context of a process, 1297 * and the process should block until they are done. 1298 * 1299 * software state is stored in the iorq structure. each iorq has an 1300 * iopb structure. the hardware understands the iopb structure. 1301 * every command must go through an iopb. a 450 handles one iopb at a 1302 * time, where as a 451 can take them in chains. [the 450 claims it 1303 * can handle chains, but is appears to be buggy...] iopb are allocated 1304 * in DVMA space at boot up time. each disk gets one iopb, and the 1305 * controller gets one (for POLL and WAIT commands). what happens if 1306 * the iopb is busy? for i/o type [1], the buffers are queued at the 1307 * "buff" layer and * picked up later by the interrupt routine. for case 1308 * [2] we can only be blocked if there is a WAIT type I/O request being 1309 * run. since this can only happen when we are crashing, we wait a sec 1310 * and then steal the IOPB. for case [3] the process can sleep 1311 * on the iorq free list until some iopbs are avaliable. 1312 */ 1313 1314 1315 int 1316 xyc_submit_iorq(xycsc, iorq, type) 1317 struct xyc_softc *xycsc; 1318 struct xy_iorq *iorq; 1319 int type; 1320 1321 { 1322 struct xy_iopb *iopb; 1323 u_long iopbaddr; 1324 1325 #ifdef XYC_DEBUG 1326 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1327 xycsc->sc_dev.dv_xname, iorq, type); 1328 #endif 1329 1330 /* first check and see if controller is busy */ 1331 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1332 #ifdef XYC_DEBUG 1333 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1334 #endif 1335 if (type == XY_SUB_NOQ) 1336 return (XY_ERR_FAIL); /* failed */ 1337 switch (type) { 1338 case XY_SUB_NORM: 1339 return XY_ERR_AOK; /* success */ 1340 case XY_SUB_WAIT: 1341 while (iorq->iopb->done == 0) { 1342 sleep(iorq, PRIBIO); 1343 } 1344 return (iorq->errno); 1345 case XY_SUB_POLL: /* steal controller */ 1346 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1347 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1348 panic("xyc_submit_iorq: stuck xyc"); 1349 printf("%s: stole controller\n", 1350 xycsc->sc_dev.dv_xname); 1351 break; 1352 default: 1353 panic("xyc_submit_iorq adding"); 1354 } 1355 } 1356 1357 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1358 if (iopb == NULL) { /* nothing doing? */ 1359 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1360 return(XY_ERR_AOK); 1361 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1362 } 1363 iopbaddr = dvma_kvtopa((long) iopb, BUS_VME16); 1364 1365 XYC_GO(xycsc->xyc, iopbaddr); 1366 1367 /* command now running, wrap it up */ 1368 switch (type) { 1369 case XY_SUB_NORM: 1370 case XY_SUB_NOQ: 1371 return (XY_ERR_AOK); /* success */ 1372 case XY_SUB_WAIT: 1373 while (iorq->iopb->done == 0) { 1374 sleep(iorq, PRIBIO); 1375 } 1376 return (iorq->errno); 1377 case XY_SUB_POLL: 1378 return (xyc_piodriver(xycsc, iorq)); 1379 default: 1380 panic("xyc_submit_iorq wrap up"); 1381 } 1382 panic("xyc_submit_iorq"); 1383 return 0; /* not reached */ 1384 } 1385 1386 1387 /* 1388 * xyc_chain: build a chain. return dvma address of first element in 1389 * the chain. iorq != NULL: means we only want that item on the chain. 1390 */ 1391 1392 struct xy_iopb * 1393 xyc_chain(xycsc, iorq) 1394 1395 struct xyc_softc *xycsc; 1396 struct xy_iorq *iorq; 1397 1398 { 1399 int togo, chain, hand; 1400 struct xy_iopb *iopb, *prev_iopb; 1401 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1402 1403 /* 1404 * promote control IOPB to the top 1405 */ 1406 if (iorq == NULL) { 1407 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1408 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1409 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1410 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1411 } 1412 /* 1413 * special case: if iorq != NULL then we have a POLL or WAIT request. 1414 * we let these take priority and do them first. 1415 */ 1416 if (iorq) { 1417 xycsc->xy_chain[0] = iorq; 1418 iorq->iopb->chen = 0; 1419 return(iorq->iopb); 1420 } 1421 1422 /* 1423 * NORM case: do round robin and maybe chain (if allowed and possible) 1424 */ 1425 1426 chain = 0; 1427 hand = xycsc->xy_hand; 1428 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1429 1430 for (togo = XYC_MAXIOPB ; togo > 0 ; togo--, hand = (hand + 1) % XYC_MAXIOPB){ 1431 1432 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1433 xycsc->iopbase[hand].done) 1434 continue; /* not ready-for-i/o */ 1435 1436 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1437 iopb = xycsc->xy_chain[chain]->iopb; 1438 iopb->chen = 0; 1439 if (chain != 0) { /* adding a link to a chain? */ 1440 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1441 prev_iopb->chen = 1; 1442 prev_iopb->nxtiopb = 0xffff & 1443 dvma_kvtopa((long) iopb, BUS_VME16); 1444 } else { /* head of chain */ 1445 iorq = xycsc->xy_chain[chain]; 1446 } 1447 chain++; 1448 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1449 } 1450 return(iorq ? iorq->iopb : NULL); 1451 } 1452 1453 /* 1454 * xyc_piodriver 1455 * 1456 * programmed i/o driver. this function takes over the computer 1457 * and drains off the polled i/o request. it returns the status of the iorq 1458 * the caller is interesting in. 1459 */ 1460 int 1461 xyc_piodriver(xycsc, iorq) 1462 struct xyc_softc *xycsc; 1463 struct xy_iorq *iorq; 1464 1465 { 1466 int nreset = 0; 1467 int retval = 0; 1468 u_long res; 1469 struct xyc *xyc = xycsc->xyc; 1470 #ifdef XYC_DEBUG 1471 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1472 #endif 1473 1474 while (iorq->iopb->done == 0) { 1475 1476 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1477 1478 /* we expect some progress soon */ 1479 if (res == XY_ERR_FAIL && nreset >= 2) { 1480 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1481 #ifdef XYC_DEBUG 1482 printf("xyc_piodriver: timeout\n"); 1483 #endif 1484 return (XY_ERR_FAIL); 1485 } 1486 if (res == XY_ERR_FAIL) { 1487 if (xyc_reset(xycsc, 0, 1488 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1489 XY_ERR_FAIL, 1490 0) == XY_ERR_FAIL) 1491 return (XY_ERR_FAIL); /* flushes all but POLL 1492 * requests, resets */ 1493 continue; 1494 } 1495 1496 xyc_remove_iorq(xycsc); /* may resubmit request */ 1497 1498 if (iorq->iopb->done == 0) 1499 xyc_start(xycsc, iorq); 1500 } 1501 1502 /* get return value */ 1503 1504 retval = iorq->errno; 1505 1506 #ifdef XYC_DEBUG 1507 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1508 iorq->errno, xyc_e2str(iorq->errno)); 1509 #endif 1510 1511 /* start up any bufs that have queued */ 1512 1513 xyc_start(xycsc, NULL); 1514 1515 return (retval); 1516 } 1517 1518 /* 1519 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1520 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1521 */ 1522 int 1523 xyc_xyreset(xycsc, xysc) 1524 struct xyc_softc *xycsc; 1525 struct xy_softc *xysc; 1526 1527 { 1528 struct xy_iopb tmpiopb; 1529 u_long addr; 1530 int del; 1531 bcopy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1532 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1533 xycsc->ciopb->ien = 0; 1534 xycsc->ciopb->com = XYCMD_RST; 1535 xycsc->ciopb->unit = xysc->xy_drive; 1536 addr = dvma_kvtopa((long) xycsc->ciopb, BUS_VME16); 1537 1538 XYC_GO(xycsc->xyc, addr); 1539 1540 del = XYC_RESETUSEC; 1541 while (del > 0) { 1542 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1543 DELAY(1); 1544 del--; 1545 } 1546 1547 if (del <= 0 || xycsc->ciopb->errs) { 1548 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1549 xyc_e2str(xycsc->ciopb->errno)); 1550 del = xycsc->xyc->xyc_rsetup; 1551 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1552 panic("xyc_reset"); 1553 } else { 1554 xycsc->xyc->xyc_csr |= XYC_IPND; /* clear IPND */ 1555 } 1556 bcopy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1557 } 1558 1559 1560 /* 1561 * xyc_reset: reset everything: requests are marked as errors except 1562 * a polled request (which is resubmitted) 1563 */ 1564 int 1565 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1566 struct xyc_softc *xycsc; 1567 int quiet, error; 1568 struct xy_iorq *blastmode; 1569 struct xy_softc *xysc; 1570 1571 { 1572 int del = 0, lcv, poll = -1, retval = XY_ERR_AOK; 1573 struct xy_iorq *iorq; 1574 1575 /* soft reset hardware */ 1576 1577 if (!quiet) 1578 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1579 del = xycsc->xyc->xyc_rsetup; 1580 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1581 if (del == XY_ERR_FAIL) { 1582 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1583 retval = XY_ERR_FAIL; 1584 } 1585 if (xysc) 1586 xyc_xyreset(xycsc, xysc); 1587 1588 /* fix queues based on "blast-mode" */ 1589 1590 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1591 iorq = &xycsc->reqs[lcv]; 1592 1593 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1594 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1595 XY_STATE(iorq->mode) != XY_SUB_NORM) 1596 /* is it active? */ 1597 continue; 1598 1599 if (blastmode == XY_RSET_ALL || 1600 blastmode != iorq) { 1601 /* failed */ 1602 iorq->errno = error; 1603 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1604 switch (XY_STATE(iorq->mode)) { 1605 case XY_SUB_NORM: 1606 iorq->buf->b_error = EIO; 1607 iorq->buf->b_flags |= B_ERROR; 1608 iorq->buf->b_resid = 1609 iorq->sectcnt * XYFM_BPS; 1610 /* Sun3: map/unmap regardless of B_PHYS */ 1611 dvma_mapout(iorq->dbufbase, 1612 iorq->buf->b_bcount); 1613 iorq->xy->xyq.b_actf = 1614 iorq->buf->b_actf; 1615 biodone(iorq->buf); 1616 iorq->mode = XY_SUB_FREE; 1617 break; 1618 case XY_SUB_WAIT: 1619 wakeup(iorq); 1620 case XY_SUB_POLL: 1621 iorq->mode = 1622 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1623 break; 1624 } 1625 1626 } else { 1627 1628 /* resubmit, no need to do anything here */ 1629 } 1630 } 1631 1632 /* 1633 * now, if stuff is waiting, start it. 1634 * since we just reset it should go 1635 */ 1636 xyc_start(xycsc, NULL); 1637 1638 return (retval); 1639 } 1640 1641 /* 1642 * xyc_start: start waiting buffers 1643 */ 1644 1645 int 1646 xyc_start(xycsc, iorq) 1647 struct xyc_softc *xycsc; 1648 struct xy_iorq *iorq; 1649 1650 { 1651 int lcv; 1652 struct xy_softc *xy; 1653 1654 if (iorq == NULL) { 1655 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1656 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1657 if (xy->xyq.b_actf == NULL) continue; 1658 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1659 xyc_startbuf(xycsc, xy, xy->xyq.b_actf); 1660 } 1661 } 1662 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1663 } 1664 1665 /* 1666 * xyc_remove_iorq: remove "done" IOPB's. 1667 */ 1668 1669 int 1670 xyc_remove_iorq(xycsc) 1671 struct xyc_softc *xycsc; 1672 1673 { 1674 int errno, rq, comm, errs; 1675 struct xyc *xyc = xycsc->xyc; 1676 u_long addr; 1677 struct xy_iopb *iopb; 1678 struct xy_iorq *iorq; 1679 struct buf *bp; 1680 1681 if (xyc->xyc_csr & XYC_DERR) { 1682 /* 1683 * DOUBLE ERROR: should never happen under normal use. This 1684 * error is so bad, you can't even tell which IOPB is bad, so 1685 * we dump them all. 1686 */ 1687 errno = XY_ERR_DERR; 1688 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1689 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1690 printf("%s: soft reset failed!\n", 1691 xycsc->sc_dev.dv_xname); 1692 panic("xyc_remove_iorq: controller DEAD"); 1693 } 1694 return (XY_ERR_AOK); 1695 } 1696 1697 /* 1698 * get iopb that is done, loop down the chain 1699 */ 1700 1701 if (xyc->xyc_csr & XYC_ERR) { 1702 xyc->xyc_csr |= XYC_ERR; /* clear error condition */ 1703 } 1704 if (xyc->xyc_csr & XYC_IPND) { 1705 xyc->xyc_csr |= XYC_IPND; /* clear interrupt */ 1706 } 1707 1708 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1709 iorq = xycsc->xy_chain[rq]; 1710 if (iorq == NULL) break; /* done ! */ 1711 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1712 continue; /* free, or done */ 1713 iopb = iorq->iopb; 1714 if (iopb->done == 0) 1715 continue; /* not done yet */ 1716 1717 comm = iopb->com; 1718 errs = iopb->errs; 1719 1720 if (errs) 1721 iorq->errno = iopb->errno; 1722 else 1723 iorq->errno = 0; 1724 1725 /* handle non-fatal errors */ 1726 1727 if (errs && 1728 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1729 continue; /* AOK: we resubmitted it */ 1730 1731 1732 /* this iorq is now done (hasn't been restarted or anything) */ 1733 1734 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1735 xyc_perror(iorq, iopb, 0); 1736 1737 /* now, if read/write check to make sure we got all the data 1738 * we needed. (this may not be the case if we got an error in 1739 * the middle of a multisector request). */ 1740 1741 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1742 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1743 /* we just successfully processed a bad144 sector 1744 * note: if we are in bad 144 mode, the pointers have 1745 * been advanced already (see above) and are pointing 1746 * at the bad144 sector. to exit bad144 mode, we 1747 * must advance the pointers 1 sector and issue a new 1748 * request if there are still sectors left to process 1749 * 1750 */ 1751 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1752 1753 /* exit b144 mode */ 1754 iorq->mode = iorq->mode & (~XY_MODE_B144); 1755 1756 if (iorq->sectcnt) { /* more to go! */ 1757 iorq->lasterror = iorq->errno = iopb->errno = 0; 1758 iopb->errs = iopb->done = 0; 1759 iorq->tries = 0; 1760 iopb->scnt = iorq->sectcnt; 1761 iopb->cyl = iorq->blockno / 1762 iorq->xy->sectpercyl; 1763 iopb->head = 1764 (iorq->blockno / iorq->xy->nhead) % 1765 iorq->xy->nhead; 1766 iopb->sect = iorq->blockno % XYFM_BPS; 1767 addr = dvma_kvtopa((long) iorq->dbuf, BUS_VME16); 1768 iopb->dataa = (addr & 0xffff); 1769 iopb->datar = ((addr & 0xff0000) >> 16); 1770 /* will resubit at end */ 1771 continue; 1772 } 1773 } 1774 /* final cleanup, totally done with this request */ 1775 1776 switch (XY_STATE(iorq->mode)) { 1777 case XY_SUB_NORM: 1778 bp = iorq->buf; 1779 if (errs) { 1780 bp->b_error = EIO; 1781 bp->b_flags |= B_ERROR; 1782 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1783 } else { 1784 bp->b_resid = 0; /* done */ 1785 } 1786 /* Sun3: map/unmap regardless of B_PHYS */ 1787 dvma_mapout(iorq->dbufbase, 1788 iorq->buf->b_bcount); 1789 iorq->mode = XY_SUB_FREE; 1790 iorq->xy->xyq.b_actf = bp->b_actf; 1791 biodone(bp); 1792 break; 1793 case XY_SUB_WAIT: 1794 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1795 wakeup(iorq); 1796 break; 1797 case XY_SUB_POLL: 1798 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1799 break; 1800 } 1801 } 1802 1803 return (XY_ERR_AOK); 1804 } 1805 1806 /* 1807 * xyc_perror: print error. 1808 * - if still_trying is true: we got an error, retried and got a 1809 * different error. in that case lasterror is the old error, 1810 * and errno is the new one. 1811 * - if still_trying is not true, then if we ever had an error it 1812 * is in lasterror. also, if iorq->errno == 0, then we recovered 1813 * from that error (otherwise iorq->errno == iorq->lasterror). 1814 */ 1815 void 1816 xyc_perror(iorq, iopb, still_trying) 1817 struct xy_iorq *iorq; 1818 struct xy_iopb *iopb; 1819 int still_trying; 1820 1821 { 1822 1823 int error = iorq->lasterror; 1824 1825 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1826 : iorq->xyc->sc_dev.dv_xname); 1827 if (iorq->buf) 1828 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1829 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1830 printf("%s %d/%d/%d: ", 1831 (iopb->com == XYCMD_RD) ? "read" : "write", 1832 iopb->cyl, iopb->head, iopb->sect); 1833 printf("%s", xyc_e2str(error)); 1834 1835 if (still_trying) 1836 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1837 else 1838 if (iorq->errno == 0) 1839 printf(" [recovered in %d tries]", iorq->tries); 1840 1841 printf("\n"); 1842 } 1843 1844 /* 1845 * xyc_error: non-fatal error encountered... recover. 1846 * return AOK if resubmitted, return FAIL if this iopb is done 1847 */ 1848 int 1849 xyc_error(xycsc, iorq, iopb, comm) 1850 struct xyc_softc *xycsc; 1851 struct xy_iorq *iorq; 1852 struct xy_iopb *iopb; 1853 int comm; 1854 1855 { 1856 int errno = iorq->errno; 1857 int erract = xyc_entoact(errno); 1858 int oldmode, advance, i; 1859 1860 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1861 oldmode = iorq->mode; 1862 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1863 /* make xyc_start ignore us */ 1864 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1865 iorq->mode = oldmode; 1866 } 1867 /* check for read/write to a sector in bad144 table if bad: redirect 1868 * request to bad144 area */ 1869 1870 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1871 (iorq->mode & XY_MODE_B144) == 0) { 1872 advance = iorq->sectcnt - iopb->scnt; 1873 XYC_ADVANCE(iorq, advance); 1874 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1875 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1876 iorq->blockno % iorq->xy->nsect)) != -1) { 1877 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1878 * redirect */ 1879 iopb->errno = iopb->done = iopb->errs = 0; 1880 iopb->scnt = 1; 1881 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1882 /* second to last acyl */ 1883 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1884 * standard */ 1885 iopb->head = i / iorq->xy->nhead; 1886 iopb->sect = i % iorq->xy->nhead; 1887 /* will resubmit when we come out of remove_iorq */ 1888 return (XY_ERR_AOK); /* recovered! */ 1889 } 1890 } 1891 1892 /* 1893 * it isn't a bad144 sector, must be real error! see if we can retry 1894 * it? 1895 */ 1896 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1897 xyc_perror(iorq, iopb, 1); /* inform of error state 1898 * change */ 1899 iorq->lasterror = errno; 1900 1901 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1902 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1903 iorq->tries++; 1904 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1905 /* will resubmit at end of remove_iorq */ 1906 return (XY_ERR_AOK); /* recovered! */ 1907 } 1908 1909 /* failed to recover from this error */ 1910 return (XY_ERR_FAIL); 1911 } 1912 1913 /* 1914 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1915 */ 1916 void 1917 xyc_tick(arg) 1918 void *arg; 1919 1920 { 1921 struct xyc_softc *xycsc = arg; 1922 int lcv, s, reset = 0; 1923 1924 /* reduce ttl for each request if one goes to zero, reset xyc */ 1925 s = splbio(); 1926 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1927 if (xycsc->reqs[lcv].mode == 0 || 1928 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1929 continue; 1930 xycsc->reqs[lcv].ttl--; 1931 if (xycsc->reqs[lcv].ttl == 0) 1932 reset = 1; 1933 } 1934 if (reset) { 1935 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1936 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1937 } 1938 splx(s); 1939 1940 /* until next time */ 1941 1942 timeout(xyc_tick, xycsc, XYC_TICKCNT); 1943 } 1944 1945 /* 1946 * xyc_ioctlcmd: this function provides a user level interface to the 1947 * controller via ioctl. this allows "format" programs to be written 1948 * in user code, and is also useful for some debugging. we return 1949 * an error code. called at user priority. 1950 * 1951 * XXX missing a few commands (see the 7053 driver for ideas) 1952 */ 1953 int 1954 xyc_ioctlcmd(xy, dev, xio) 1955 struct xy_softc *xy; 1956 dev_t dev; 1957 struct xd_iocmd *xio; 1958 1959 { 1960 int s, err, rqno, dummy; 1961 caddr_t dvmabuf = NULL; 1962 struct xyc_softc *xycsc; 1963 1964 /* check sanity of requested command */ 1965 1966 switch (xio->cmd) { 1967 1968 case XYCMD_NOP: /* no op: everything should be zero */ 1969 if (xio->subfn || xio->dptr || xio->dlen || 1970 xio->block || xio->sectcnt) 1971 return (EINVAL); 1972 break; 1973 1974 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1975 case XYCMD_WR: 1976 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1977 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1978 return (EINVAL); 1979 break; 1980 1981 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1982 return (EINVAL); 1983 1984 break; 1985 1986 default: 1987 return (EINVAL);/* ??? */ 1988 } 1989 1990 /* create DVMA buffer for request if needed */ 1991 1992 if (xio->dlen) { 1993 dvmabuf = dvma_malloc(xio->dlen); 1994 if (xio->cmd == XYCMD_WR) { 1995 if (err = copyin(xio->dptr, dvmabuf, xio->dlen)) { 1996 dvma_free(dvmabuf, xio->dlen); 1997 return (err); 1998 } 1999 } 2000 } 2001 /* do it! */ 2002 2003 err = 0; 2004 xycsc = xy->parent; 2005 s = splbio(); 2006 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2007 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2008 if (rqno == XY_ERR_FAIL) { 2009 err = EIO; 2010 goto done; 2011 } 2012 xio->errno = xycsc->ciorq->errno; 2013 xio->tries = xycsc->ciorq->tries; 2014 XYC_DONE(xycsc, dummy); 2015 2016 if (xio->cmd == XYCMD_RD) 2017 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2018 2019 done: 2020 splx(s); 2021 if (dvmabuf) 2022 dvma_free(dvmabuf, xio->dlen); 2023 return (err); 2024 } 2025 2026 /* 2027 * xyc_e2str: convert error code number into an error string 2028 */ 2029 char * 2030 xyc_e2str(no) 2031 int no; 2032 { 2033 switch (no) { 2034 case XY_ERR_FAIL: 2035 return ("Software fatal error"); 2036 case XY_ERR_DERR: 2037 return ("DOUBLE ERROR"); 2038 case XY_ERR_AOK: 2039 return ("Successful completion"); 2040 case XY_ERR_IPEN: 2041 return("Interrupt pending"); 2042 case XY_ERR_BCFL: 2043 return("Busy conflict"); 2044 case XY_ERR_TIMO: 2045 return("Operation timeout"); 2046 case XY_ERR_NHDR: 2047 return("Header not found"); 2048 case XY_ERR_HARD: 2049 return("Hard ECC error"); 2050 case XY_ERR_ICYL: 2051 return("Illegal cylinder address"); 2052 case XY_ERR_ISEC: 2053 return("Illegal sector address"); 2054 case XY_ERR_SMAL: 2055 return("Last sector too small"); 2056 case XY_ERR_SACK: 2057 return("Slave ACK error (non-existent memory)"); 2058 case XY_ERR_CHER: 2059 return("Cylinder and head/header error"); 2060 case XY_ERR_SRTR: 2061 return("Auto-seek retry successful"); 2062 case XY_ERR_WPRO: 2063 return("Write-protect error"); 2064 case XY_ERR_UIMP: 2065 return("Unimplemented command"); 2066 case XY_ERR_DNRY: 2067 return("Drive not ready"); 2068 case XY_ERR_SZER: 2069 return("Sector count zero"); 2070 case XY_ERR_DFLT: 2071 return("Drive faulted"); 2072 case XY_ERR_ISSZ: 2073 return("Illegal sector size"); 2074 case XY_ERR_SLTA: 2075 return("Self test A"); 2076 case XY_ERR_SLTB: 2077 return("Self test B"); 2078 case XY_ERR_SLTC: 2079 return("Self test C"); 2080 case XY_ERR_SOFT: 2081 return("Soft ECC error"); 2082 case XY_ERR_SFOK: 2083 return("Soft ECC error recovered"); 2084 case XY_ERR_IHED: 2085 return("Illegal head"); 2086 case XY_ERR_DSEQ: 2087 return("Disk sequencer error"); 2088 case XY_ERR_SEEK: 2089 return("Seek error"); 2090 default: 2091 return ("Unknown error"); 2092 } 2093 } 2094 2095 int 2096 xyc_entoact(errno) 2097 2098 int errno; 2099 2100 { 2101 switch (errno) { 2102 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2103 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2104 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2105 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2106 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2107 2108 return(XY_ERA_PROG); /* program error ! */ 2109 2110 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2111 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2112 case XY_ERR_SOFT: 2113 2114 return(XY_ERA_HARD); /* hard error, retry */ 2115 2116 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2117 2118 return(XY_ERA_RSET); /* hard error reset */ 2119 2120 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2121 2122 return(XY_ERA_SOFT); /* an FYI error */ 2123 2124 case XY_ERR_WPRO: 2125 2126 return(XY_ERA_WPRO); /* write protect */ 2127 } 2128 2129 return(XY_ERA_PROG); /* ??? */ 2130 } 2131
Indexes created Mon Sep 29 21:09:56 GMT 2025