xy.c revision 1.60
1 /* $NetBSD: xy.c,v 1.60 2007/07/09 20:52:34 ad Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: &Id: xy.c,v 1.1 1995/09/25 20:35:14 chuck Exp & 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.60 2007/07/09 20:52:34 ad Exp $"); 56 57 #undef XYC_DEBUG /* full debug */ 58 #undef XYC_DIAG /* extra sanity checks */ 59 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 60 #define XYC_DIAG /* link in with master DIAG option */ 61 #endif 62 63 #include <sys/param.h> 64 #include <sys/proc.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/file.h> 68 #include <sys/stat.h> 69 #include <sys/ioctl.h> 70 #include <sys/buf.h> 71 #include <sys/bufq.h> 72 #include <sys/uio.h> 73 #include <sys/malloc.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/syslog.h> 78 #include <sys/dkbad.h> 79 #include <sys/conf.h> 80 #include <sys/kauth.h> 81 82 #include <uvm/uvm_extern.h> 83 84 #include <dev/sun/disklabel.h> 85 86 #include <machine/autoconf.h> 87 #include <machine/dvma.h> 88 89 #include <sun3/dev/xyreg.h> 90 #include <sun3/dev/xyvar.h> 91 #include <sun3/dev/xio.h> 92 93 #include "locators.h" 94 95 /* 96 * Print a complaint when no xy children were specified 97 * in the config file. Better than a link error... 98 * 99 * XXX: Some folks say this driver should be split in two, 100 * but that seems pointless with ONLY one type of child. 101 */ 102 #include "xy.h" 103 #if NXY == 0 104 #error "xyc but no xy?" 105 #endif 106 107 /* 108 * macros 109 */ 110 111 /* 112 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 113 */ 114 #define XYC_GO(XYC, ADDR) { \ 115 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 116 (ADDR) = ((ADDR) >> 8); \ 117 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 118 (ADDR) = ((ADDR) >> 8); \ 119 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 120 (ADDR) = ((ADDR) >> 8); \ 121 (XYC)->xyc_reloc_hi = (ADDR); \ 122 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 123 } 124 125 /* 126 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 127 */ 128 129 #define XYC_DONE(SC,ER) { \ 130 if ((ER) == XY_ERR_AOK) { \ 131 (ER) = (SC)->ciorq->errno; \ 132 (SC)->ciorq->mode = XY_SUB_FREE; \ 133 wakeup((SC)->ciorq); \ 134 } \ 135 } 136 137 /* 138 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 139 */ 140 141 #define XYC_ADVANCE(IORQ, N) { \ 142 if (N) { \ 143 (IORQ)->sectcnt -= (N); \ 144 (IORQ)->blockno += (N); \ 145 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 146 } \ 147 } 148 149 /* 150 * note - addresses you can sleep on: 151 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 152 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 153 */ 154 155 156 /* 157 * function prototypes 158 * "xyc_*" functions are internal, all others are external interfaces 159 */ 160 161 /* internals */ 162 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 163 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 164 const char *xyc_e2str(int); 165 int xyc_entoact(int); 166 int xyc_error(struct xyc_softc *, struct xy_iorq *, struct xy_iopb *, int); 167 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 168 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 169 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 170 int xyc_remove_iorq(struct xyc_softc *); 171 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 172 struct xy_softc *); 173 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, struct xy_softc *, 174 int, u_long, int, void *, struct buf *); 175 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 176 void xyc_start(struct xyc_softc *, struct xy_iorq *); 177 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 178 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 179 void xyc_tick(void *); 180 int xyc_unbusy(struct xyc *, int); 181 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 182 183 /* machine interrupt hook */ 184 int xycintr(void *); 185 186 /* autoconf */ 187 static int xycmatch(struct device *, struct cfdata *, void *); 188 static void xycattach(struct device *, struct device *, void *); 189 static int xyc_print(void *, const char *); 190 191 static int xymatch(struct device *, struct cfdata *, void *); 192 static void xyattach(struct device *, struct device *, void *); 193 static void xy_init(struct xy_softc *); 194 195 static void xydummystrat(struct buf *); 196 int xygetdisklabel(struct xy_softc *, void *); 197 198 /* 199 * cfattach's: device driver interface to autoconfig 200 */ 201 202 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 203 xycmatch, xycattach, NULL, NULL); 204 205 CFATTACH_DECL(xy, sizeof(struct xy_softc), 206 xymatch, xyattach, NULL, NULL); 207 208 extern struct cfdriver xy_cd; 209 210 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 211 int driveno; /* unit number */ 212 }; 213 214 dev_type_open(xyopen); 215 dev_type_close(xyclose); 216 dev_type_read(xyread); 217 dev_type_write(xywrite); 218 dev_type_ioctl(xyioctl); 219 dev_type_strategy(xystrategy); 220 dev_type_dump(xydump); 221 dev_type_size(xysize); 222 223 const struct bdevsw xy_bdevsw = { 224 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 225 }; 226 227 const struct cdevsw xy_cdevsw = { 228 xyopen, xyclose, xyread, xywrite, xyioctl, 229 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 230 }; 231 232 /* 233 * dkdriver 234 */ 235 236 struct dkdriver xydkdriver = { xystrategy }; 237 238 /* 239 * start: disk label fix code (XXX) 240 */ 241 242 static void *xy_labeldata; 243 244 static void 245 xydummystrat(struct buf *bp) 246 { 247 if (bp->b_bcount != XYFM_BPS) 248 panic("xydummystrat"); 249 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 250 bp->b_flags |= B_DONE; 251 bp->b_flags &= ~B_BUSY; 252 } 253 254 int 255 xygetdisklabel(struct xy_softc *xy, void *b) 256 { 257 const char *err; 258 struct sun_disklabel *sdl; 259 260 /* We already have the label data in `b'; setup for dummy strategy */ 261 xy_labeldata = b; 262 263 /* Required parameter for readdisklabel() */ 264 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 265 266 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xy->sc_dev), RAW_PART), 267 xydummystrat, 268 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 269 if (err) { 270 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 271 return(XY_ERR_FAIL); 272 } 273 274 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 275 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 276 if (sdl->sl_magic == SUN_DKMAGIC) 277 xy->pcyl = sdl->sl_pcyl; 278 else { 279 printf("%s: WARNING: no `pcyl' in disk label.\n", 280 xy->sc_dev.dv_xname); 281 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 282 xy->sc_dk.dk_label->d_acylinders; 283 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 284 xy->sc_dev.dv_xname, xy->pcyl); 285 } 286 287 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 288 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 289 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 290 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 291 xy->sectpercyl = xy->nhead * xy->nsect; 292 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 293 * sun->bsd */ 294 return(XY_ERR_AOK); 295 } 296 297 /* 298 * end: disk label fix code (XXX) 299 */ 300 301 /* 302 * a u t o c o n f i g f u n c t i o n s 303 */ 304 305 /* 306 * xycmatch: determine if xyc is present or not. we do a 307 * soft reset to detect the xyc. 308 */ 309 static int 310 xycmatch(struct device *parent, struct cfdata *cf, void *aux) 311 { 312 struct confargs *ca = aux; 313 314 /* No default VME address. */ 315 if (ca->ca_paddr == -1) 316 return (0); 317 318 /* Make sure something is there... */ 319 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 320 return (0); 321 322 /* Default interrupt priority. */ 323 if (ca->ca_intpri == -1) 324 ca->ca_intpri = 2; 325 326 return (1); 327 } 328 329 /* 330 * xycattach: attach controller 331 */ 332 static void 333 xycattach(struct device *parent, struct device *self, void *aux) 334 { 335 struct xyc_softc *xyc = (void *) self; 336 struct confargs *ca = aux; 337 struct xyc_attach_args xa; 338 int lcv, err, res, pbsz; 339 void *tmp, *tmp2; 340 u_long ultmp; 341 342 /* get addressing and intr level stuff from autoconfig and load it 343 * into our xyc_softc. */ 344 345 xyc->xyc = (struct xyc *) 346 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 347 xyc->bustype = ca->ca_bustype; 348 xyc->ipl = ca->ca_intpri; 349 xyc->vector = ca->ca_intvec; 350 xyc->no_ols = 0; /* XXX should be from config */ 351 352 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 353 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 354 355 /* 356 * allocate and zero buffers 357 * check boundaries of the KVA's ... all IOPBs must reside in 358 * the same 64K region. 359 */ 360 361 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 362 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 363 ultmp = (u_long) tmp; 364 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 365 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 366 dvma_free(tmp2, pbsz); 367 ultmp = (u_long) tmp; 368 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 369 printf("%s: can't alloc IOPB mem in 64K\n", 370 xyc->sc_dev.dv_xname); 371 return; 372 } 373 } 374 memset(tmp, 0, pbsz); 375 xyc->iopbase = tmp; 376 xyc->dvmaiopb = (struct xy_iopb *) 377 dvma_kvtopa(xyc->iopbase, xyc->bustype); 378 xyc->reqs = (struct xy_iorq *) 379 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 380 if (xyc->reqs == NULL) 381 panic("xyc malloc"); 382 memset(xyc->reqs, 0, XYC_MAXIOPB * sizeof(struct xy_iorq)); 383 384 /* 385 * init iorq to iopb pointers, and non-zero fields in the 386 * iopb which never change. 387 */ 388 389 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 390 xyc->xy_chain[lcv] = NULL; 391 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 392 xyc->iopbase[lcv].asr = 1; /* always the same */ 393 xyc->iopbase[lcv].eef = 1; /* always the same */ 394 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 395 xyc->iopbase[lcv].aud = 1; /* always the same */ 396 xyc->iopbase[lcv].relo = 1; /* always the same */ 397 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 398 } 399 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 400 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 401 xyc->xy_hand = 0; 402 403 /* read controller parameters and insure we have a 450/451 */ 404 405 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 406 res = xyc->ciopb->ctyp; 407 XYC_DONE(xyc, err); 408 if (res != XYCT_450) { 409 if (err) 410 printf(": %s: ", xyc_e2str(err)); 411 printf(": doesn't identify as a 450/451\n"); 412 return; 413 } 414 printf(": Xylogics 450/451"); 415 if (xyc->no_ols) 416 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 417 printf("\n"); 418 if (err) { 419 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 420 xyc_e2str(err)); 421 return; 422 } 423 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 424 printf("%s: 24 bit addressing turned off\n", 425 xyc->sc_dev.dv_xname); 426 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 427 printf("to enable 24 bit mode and this driver\n"); 428 return; 429 } 430 431 /* link in interrupt with higher level software */ 432 isr_add_vectored(xycintr, (void *)xyc, 433 ca->ca_intpri, ca->ca_intvec); 434 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 435 xyc->sc_dev.dv_xname, "intr"); 436 437 callout_init(&xyc->sc_tick_ch, 0); 438 439 /* now we must look for disks using autoconfig */ 440 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 441 (void) config_found(self, (void *) &xa, xyc_print); 442 443 /* start the watchdog clock */ 444 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 445 } 446 447 static int 448 xyc_print(void *aux, const char *name) 449 { 450 struct xyc_attach_args *xa = aux; 451 452 if (name != NULL) 453 aprint_normal("%s: ", name); 454 455 if (xa->driveno != -1) 456 aprint_normal(" drive %d", xa->driveno); 457 458 return UNCONF; 459 } 460 461 /* 462 * xymatch: probe for disk. 463 * 464 * note: we almost always say disk is present. this allows us to 465 * spin up and configure a disk after the system is booted (we can 466 * call xyattach!). Also, wire down the relationship between the 467 * xy* and xyc* devices, to simplify boot device identification. 468 */ 469 static int 470 xymatch(struct device *parent, struct cfdata *cf, void *aux) 471 { 472 struct xyc_attach_args *xa = aux; 473 int xy_unit; 474 475 /* Match only on the "wired-down" controller+disk. */ 476 xy_unit = device_unit(parent) * 2 + xa->driveno; 477 if (cf->cf_unit != xy_unit) 478 return (0); 479 480 return (1); 481 } 482 483 /* 484 * xyattach: attach a disk. 485 */ 486 static void 487 xyattach(struct device *parent, struct device *self, void *aux) 488 { 489 struct xy_softc *xy = (void *) self; 490 struct xyc_softc *xyc = (void *) parent; 491 struct xyc_attach_args *xa = aux; 492 493 printf("\n"); 494 495 /* 496 * Always re-initialize the disk structure. We want statistics 497 * to start with a clean slate. 498 */ 499 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 500 xy->sc_dk.dk_driver = &xydkdriver; 501 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 502 503 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 504 xy->flags = 0; 505 xy->parent = xyc; 506 507 /* init queue of waiting bufs */ 508 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 509 xy->xyrq = &xyc->reqs[xa->driveno]; 510 511 xy->xy_drive = xa->driveno; 512 xyc->sc_drives[xa->driveno] = xy; 513 514 /* Do init work common to attach and open. */ 515 xy_init(xy); 516 } 517 518 /* 519 * end of autoconfig functions 520 */ 521 522 /* 523 * Initialize a disk. This can be called from both autoconf and 524 * also from xyopen/xystrategy. 525 */ 526 static void 527 xy_init(struct xy_softc *xy) 528 { 529 struct xyc_softc *xyc; 530 struct dkbad *dkb; 531 void *dvmabuf; 532 int err, spt, mb, blk, lcv, fullmode, newstate; 533 534 xyc = xy->parent; 535 xy->state = XY_DRIVE_ATTACHING; 536 newstate = XY_DRIVE_UNKNOWN; 537 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 538 dvmabuf = dvma_malloc(XYFM_BPS); 539 540 /* first try and reset the drive */ 541 542 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 543 XYC_DONE(xyc, err); 544 if (err == XY_ERR_DNRY) { 545 printf("%s: drive %d: off-line\n", 546 xy->sc_dev.dv_xname, xy->xy_drive); 547 goto done; 548 } 549 if (err) { 550 printf("%s: ERROR 0x%02x (%s)\n", 551 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 552 goto done; 553 } 554 printf("%s: drive %d ready", 555 xy->sc_dev.dv_xname, xy->xy_drive); 556 557 /* 558 * now set drive parameters (to semi-bogus values) so we can read the 559 * disk label. 560 */ 561 xy->pcyl = xy->ncyl = 1; 562 xy->acyl = 0; 563 xy->nhead = 1; 564 xy->nsect = 1; 565 xy->sectpercyl = 1; 566 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 567 xy->dkb.bt_bad[lcv].bt_cyl = 568 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 569 570 /* read disk label */ 571 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 572 xy->drive_type++) { 573 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 574 dvmabuf, fullmode); 575 XYC_DONE(xyc, err); 576 if (err == XY_ERR_AOK) break; 577 } 578 579 if (err != XY_ERR_AOK) { 580 printf("%s: reading disk label failed: %s\n", 581 xy->sc_dev.dv_xname, xyc_e2str(err)); 582 goto done; 583 } 584 printf("%s: drive type %d\n", 585 xy->sc_dev.dv_xname, xy->drive_type); 586 587 newstate = XY_DRIVE_NOLABEL; 588 589 xy->hw_spt = spt = 0; /* XXX needed ? */ 590 /* Attach the disk: must be before getdisklabel to malloc label */ 591 disk_attach(&xy->sc_dk); 592 593 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 594 goto done; 595 596 /* inform the user of what is up */ 597 printf("%s: <%s>, pcyl %d\n", 598 xy->sc_dev.dv_xname, 599 (char *)dvmabuf, xy->pcyl); 600 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 601 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 602 xy->sc_dev.dv_xname, mb, 603 xy->ncyl, xy->nhead, xy->nsect); 604 605 /* 606 * 450/451 stupidity: the drive type is encoded into the format 607 * of the disk. the drive type in the IOPB must match the drive 608 * type in the format, or you will not be able to do I/O to the 609 * disk (you get header not found errors). if you have two drives 610 * of different sizes that have the same drive type in their 611 * formatting then you are out of luck. 612 * 613 * this problem was corrected in the 753/7053. 614 */ 615 616 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 617 struct xy_softc *oxy; 618 619 oxy = xyc->sc_drives[lcv]; 620 if (oxy == NULL || oxy == xy) continue; 621 if (oxy->drive_type != xy->drive_type) continue; 622 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 623 xy->nhead != oxy->nhead) { 624 printf("%s: %s and %s must be the same size!\n", 625 xyc->sc_dev.dv_xname, 626 xy ->sc_dev.dv_xname, 627 oxy->sc_dev.dv_xname); 628 panic("xy drive size mismatch"); 629 } 630 } 631 632 633 /* now set the real drive parameters! */ 634 blk = (xy->nsect - 1) + 635 ((xy->nhead - 1) * xy->nsect) + 636 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 637 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 638 XYC_DONE(xyc, err); 639 if (err) { 640 printf("%s: write drive size failed: %s\n", 641 xy->sc_dev.dv_xname, xyc_e2str(err)); 642 goto done; 643 } 644 newstate = XY_DRIVE_ONLINE; 645 646 /* 647 * read bad144 table. this table resides on the first sector of the 648 * last track of the disk (i.e. second cyl of "acyl" area). 649 */ 650 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 651 /* last cyl */ 652 (xy->nhead - 1) * xy->nsect; /* last head */ 653 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 654 dvmabuf, fullmode); 655 XYC_DONE(xyc, err); 656 if (err) { 657 printf("%s: reading bad144 failed: %s\n", 658 xy->sc_dev.dv_xname, xyc_e2str(err)); 659 goto done; 660 } 661 662 /* check dkbad for sanity */ 663 dkb = (struct dkbad *) dvmabuf; 664 for (lcv = 0; lcv < 126; lcv++) { 665 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 666 dkb->bt_bad[lcv].bt_cyl == 0) && 667 dkb->bt_bad[lcv].bt_trksec == 0xffff) 668 continue; /* blank */ 669 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 670 break; 671 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 672 break; 673 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 674 break; 675 } 676 if (lcv != 126) { 677 printf("%s: warning: invalid bad144 sector!\n", 678 xy->sc_dev.dv_xname); 679 } else { 680 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 681 } 682 683 done: 684 xy->state = newstate; 685 dvma_free(dvmabuf, XYFM_BPS); 686 } 687 688 /* 689 * { b , c } d e v s w f u n c t i o n s 690 */ 691 692 /* 693 * xyclose: close device 694 */ 695 int 696 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 697 { 698 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 699 int part = DISKPART(dev); 700 701 /* clear mask bits */ 702 703 switch (fmt) { 704 case S_IFCHR: 705 xy->sc_dk.dk_copenmask &= ~(1 << part); 706 break; 707 case S_IFBLK: 708 xy->sc_dk.dk_bopenmask &= ~(1 << part); 709 break; 710 } 711 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 712 713 return 0; 714 } 715 716 /* 717 * xydump: crash dump system 718 */ 719 int 720 xydump(dev_t dev, daddr_t blkno, void *va, size_t sz) 721 { 722 int unit, part; 723 struct xy_softc *xy; 724 725 unit = DISKUNIT(dev); 726 if (unit >= xy_cd.cd_ndevs) 727 return ENXIO; 728 part = DISKPART(dev); 729 730 xy = xy_cd.cd_devs[unit]; 731 732 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 733 'a' + part); 734 735 return ENXIO; 736 737 /* outline: globals: "dumplo" == sector number of partition to start 738 * dump at (convert to physical sector with partition table) 739 * "dumpsize" == size of dump in clicks "physmem" == size of physical 740 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 741 * physmem) 742 * 743 * dump a copy of physical memory to the dump device starting at sector 744 * "dumplo" in the swap partition (make sure > 0). map in pages as 745 * we go. use polled I/O. 746 * 747 * XXX how to handle NON_CONTIG? 748 */ 749 } 750 751 /* 752 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 753 */ 754 int 755 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 756 { 757 struct xy_softc *xy; 758 struct xd_iocmd *xio; 759 int error, s, unit; 760 761 unit = DISKUNIT(dev); 762 763 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 764 return (ENXIO); 765 766 /* switch on ioctl type */ 767 768 switch (command) { 769 case DIOCSBAD: /* set bad144 info */ 770 if ((flag & FWRITE) == 0) 771 return EBADF; 772 s = splbio(); 773 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 774 splx(s); 775 return 0; 776 777 case DIOCGDINFO: /* get disk label */ 778 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 779 return 0; 780 781 case DIOCGPART: /* get partition info */ 782 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 783 ((struct partinfo *) addr)->part = 784 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 785 return 0; 786 787 case DIOCSDINFO: /* set disk label */ 788 if ((flag & FWRITE) == 0) 789 return EBADF; 790 error = setdisklabel(xy->sc_dk.dk_label, 791 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 792 xy->sc_dk.dk_cpulabel); 793 if (error == 0) { 794 if (xy->state == XY_DRIVE_NOLABEL) 795 xy->state = XY_DRIVE_ONLINE; 796 } 797 return error; 798 799 case DIOCWLABEL: /* change write status of disk label */ 800 if ((flag & FWRITE) == 0) 801 return EBADF; 802 if (*(int *) addr) 803 xy->flags |= XY_WLABEL; 804 else 805 xy->flags &= ~XY_WLABEL; 806 return 0; 807 808 case DIOCWDINFO: /* write disk label */ 809 if ((flag & FWRITE) == 0) 810 return EBADF; 811 error = setdisklabel(xy->sc_dk.dk_label, 812 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 813 xy->sc_dk.dk_cpulabel); 814 if (error == 0) { 815 if (xy->state == XY_DRIVE_NOLABEL) 816 xy->state = XY_DRIVE_ONLINE; 817 818 /* Simulate opening partition 0 so write succeeds. */ 819 xy->sc_dk.dk_openmask |= (1 << 0); 820 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 821 xystrategy, xy->sc_dk.dk_label, 822 xy->sc_dk.dk_cpulabel); 823 xy->sc_dk.dk_openmask = 824 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 825 } 826 return error; 827 828 case DIOSXDCMD: 829 xio = (struct xd_iocmd *) addr; 830 if ((error = kauth_authorize_generic(l->l_cred, 831 KAUTH_GENERIC_ISSUSER, NULL)) != 0) 832 return (error); 833 return (xyc_ioctlcmd(xy, dev, xio)); 834 835 default: 836 return ENOTTY; 837 } 838 } 839 840 /* 841 * xyopen: open drive 842 */ 843 int 844 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 845 { 846 int err, unit, part, s; 847 struct xy_softc *xy; 848 849 /* first, could it be a valid target? */ 850 unit = DISKUNIT(dev); 851 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 852 return (ENXIO); 853 part = DISKPART(dev); 854 err = 0; 855 856 /* 857 * If some other processing is doing init, sleep. 858 */ 859 s = splbio(); 860 while (xy->state == XY_DRIVE_ATTACHING) { 861 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 862 err = EINTR; 863 goto done; 864 } 865 } 866 /* Do we need to init the drive? */ 867 if (xy->state == XY_DRIVE_UNKNOWN) { 868 xy_init(xy); 869 wakeup(&xy->state); 870 } 871 /* Was the init successful? */ 872 if (xy->state == XY_DRIVE_UNKNOWN) { 873 err = EIO; 874 goto done; 875 } 876 877 /* check for partition */ 878 if (part != RAW_PART && 879 (part >= xy->sc_dk.dk_label->d_npartitions || 880 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 881 err = ENXIO; 882 goto done; 883 } 884 885 /* set open masks */ 886 switch (fmt) { 887 case S_IFCHR: 888 xy->sc_dk.dk_copenmask |= (1 << part); 889 break; 890 case S_IFBLK: 891 xy->sc_dk.dk_bopenmask |= (1 << part); 892 break; 893 } 894 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 895 896 done: 897 splx(s); 898 return (err); 899 } 900 901 int 902 xyread(dev_t dev, struct uio *uio, int flags) 903 { 904 905 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 906 } 907 908 int 909 xywrite(dev_t dev, struct uio *uio, int flags) 910 { 911 912 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 913 } 914 915 916 /* 917 * xysize: return size of a partition for a dump 918 */ 919 920 int 921 xysize(dev_t dev) 922 { 923 struct xy_softc *xysc; 924 int unit, part, size, omask; 925 926 /* valid unit? */ 927 unit = DISKUNIT(dev); 928 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 929 return (-1); 930 931 part = DISKPART(dev); 932 omask = xysc->sc_dk.dk_openmask & (1 << part); 933 934 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 935 return (-1); 936 937 /* do it */ 938 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 939 size = -1; /* only give valid size for swap partitions */ 940 else 941 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 942 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 943 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 944 return (-1); 945 return (size); 946 } 947 948 /* 949 * xystrategy: buffering system interface to xy. 950 */ 951 void 952 xystrategy(struct buf *bp) 953 { 954 struct xy_softc *xy; 955 int s, unit; 956 struct disklabel *lp; 957 daddr_t blkno; 958 959 unit = DISKUNIT(bp->b_dev); 960 961 /* check for live device */ 962 963 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 964 bp->b_blkno < 0 || 965 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 966 bp->b_error = EINVAL; 967 goto bad; 968 } 969 970 /* There should always be an open first. */ 971 if (xy->state == XY_DRIVE_UNKNOWN) { 972 bp->b_error = EIO; 973 goto bad; 974 } 975 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 976 /* no I/O to unlabeled disks, unless raw partition */ 977 bp->b_error = EIO; 978 goto bad; 979 } 980 /* short circuit zero length request */ 981 982 if (bp->b_bcount == 0) 983 goto done; 984 985 /* check bounds with label (disksubr.c). Determine the size of the 986 * transfer, and make sure it is within the boundaries of the 987 * partition. Adjust transfer if needed, and signal errors or early 988 * completion. */ 989 990 lp = xy->sc_dk.dk_label; 991 992 if (bounds_check_with_label(&xy->sc_dk, bp, 993 (xy->flags & XY_WLABEL) != 0) <= 0) 994 goto done; 995 996 /* 997 * Now convert the block number to absolute and put it in 998 * terms of the device's logical block size. 999 */ 1000 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1001 if (DISKPART(bp->b_dev) != RAW_PART) 1002 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1003 1004 bp->b_rawblkno = blkno; 1005 1006 /* 1007 * now we know we have a valid buf structure that we need to do I/O 1008 * on. 1009 */ 1010 1011 s = splbio(); /* protect the queues */ 1012 1013 BUFQ_PUT(xy->xyq, bp); /* XXX disksort_cylinder */ 1014 1015 /* start 'em up */ 1016 1017 xyc_start(xy->parent, NULL); 1018 1019 /* done! */ 1020 1021 splx(s); 1022 return; 1023 1024 bad: /* tells upper layers we have an error */ 1025 bp->b_flags |= B_ERROR; 1026 done: /* tells upper layers we are done with this 1027 * buf */ 1028 bp->b_resid = bp->b_bcount; 1029 biodone(bp); 1030 } 1031 /* 1032 * end of {b,c}devsw functions 1033 */ 1034 1035 /* 1036 * i n t e r r u p t f u n c t i o n 1037 * 1038 * xycintr: hardware interrupt. 1039 */ 1040 int 1041 xycintr(void *v) 1042 { 1043 struct xyc_softc *xycsc = v; 1044 1045 /* kick the event counter */ 1046 xycsc->sc_intrcnt.ev_count++; 1047 1048 /* remove as many done IOPBs as possible */ 1049 xyc_remove_iorq(xycsc); 1050 1051 /* start any iorq's already waiting */ 1052 xyc_start(xycsc, NULL); 1053 1054 return (1); 1055 } 1056 /* 1057 * end of interrupt function 1058 */ 1059 1060 /* 1061 * i n t e r n a l f u n c t i o n s 1062 */ 1063 1064 /* 1065 * xyc_rqinit: fill out the fields of an I/O request 1066 */ 1067 1068 inline void 1069 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, 1070 int md, u_long blk, int cnt, void *db, 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(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1089 { 1090 u_long block, dp; 1091 1092 /* normal IOPB case, standard stuff */ 1093 1094 /* chain bit handled later */ 1095 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1096 iopb->com = cmd; 1097 iopb->errno = 0; 1098 iopb->errs = 0; 1099 iopb->done = 0; 1100 if (iorq->xy) { 1101 iopb->unit = iorq->xy->xy_drive; 1102 iopb->dt = iorq->xy->drive_type; 1103 } else { 1104 iopb->unit = 0; 1105 iopb->dt = 0; 1106 } 1107 block = iorq->blockno; 1108 if (iorq->xy == NULL || block == 0) { 1109 iopb->sect = iopb->head = iopb->cyl = 0; 1110 } else { 1111 iopb->sect = block % iorq->xy->nsect; 1112 block = block / iorq->xy->nsect; 1113 iopb->head = block % iorq->xy->nhead; 1114 block = block / iorq->xy->nhead; 1115 iopb->cyl = block; 1116 } 1117 iopb->scnt = iorq->sectcnt; 1118 if (iorq->dbuf == NULL) { 1119 iopb->dataa = 0; 1120 iopb->datar = 0; 1121 } else { 1122 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1123 iopb->dataa = (dp & 0xffff); 1124 iopb->datar = ((dp & 0xff0000) >> 16); 1125 } 1126 iopb->subfn = subfun; 1127 } 1128 1129 1130 /* 1131 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1132 */ 1133 1134 int 1135 xyc_unbusy(struct xyc *xyc, int del) 1136 { 1137 while (del-- > 0) { 1138 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1139 break; 1140 DELAY(1); 1141 } 1142 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1143 } 1144 1145 /* 1146 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1147 * note that NORM requests are handled separately. 1148 */ 1149 int 1150 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1151 int scnt, char *dptr, int fullmode) 1152 { 1153 struct xy_iorq *iorq = xycsc->ciorq; 1154 struct xy_iopb *iopb = xycsc->ciopb; 1155 int submode = XY_STATE(fullmode); 1156 1157 /* 1158 * is someone else using the control iopq wait for it if we can 1159 */ 1160 start: 1161 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1162 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1163 return(XY_ERR_FAIL); 1164 goto start; 1165 } 1166 1167 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1168 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1169 iorq->mode = XY_SUB_FREE; 1170 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1171 } 1172 1173 /* init iorq/iopb */ 1174 1175 xyc_rqinit(iorq, xycsc, 1176 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1177 fullmode, block, scnt, dptr, NULL); 1178 1179 /* load IOPB from iorq */ 1180 1181 xyc_rqtopb(iorq, iopb, cmd, subfn); 1182 1183 /* submit it for processing */ 1184 1185 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1186 1187 return(XY_ERR_AOK); 1188 } 1189 1190 /* 1191 * xyc_startbuf 1192 * start a buffer for running 1193 */ 1194 1195 int 1196 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1197 { 1198 int partno; 1199 struct xy_iorq *iorq; 1200 struct xy_iopb *iopb; 1201 u_long block; 1202 void *dbuf; 1203 1204 iorq = xysc->xyrq; 1205 iopb = iorq->iopb; 1206 1207 /* get buf */ 1208 1209 if (bp == NULL) 1210 panic("xyc_startbuf null buf"); 1211 1212 partno = DISKPART(bp->b_dev); 1213 #ifdef XYC_DEBUG 1214 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1215 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1216 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1217 bp->b_bcount, bp->b_data); 1218 #endif 1219 1220 /* 1221 * load request. 1222 * 1223 * also, note that there are two kinds of buf structures, those with 1224 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1225 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1226 * buffer which has already been mapped into DVMA space. (Not on sun3) 1227 * However, if B_PHYS is not set, then the buffer is a normal system 1228 * buffer which does *not* live in DVMA space. In that case we call 1229 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1230 * 1231 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1232 * as mapped into DVMA space, where as the bp->b_data points to its 1233 * non-DVMA mapping. 1234 * 1235 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1236 * into dvma space, only that it was remapped into the kernel. 1237 * We ALWAYS have to remap the kernel buf into DVMA space. 1238 * (It is done inexpensively, using whole segments!) 1239 */ 1240 1241 block = bp->b_rawblkno; 1242 1243 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1244 if (dbuf == NULL) { /* out of DVMA space */ 1245 printf("%s: warning: out of DVMA space\n", 1246 xycsc->sc_dev.dv_xname); 1247 return (XY_ERR_FAIL); /* XXX: need some sort of 1248 * call-back scheme here? */ 1249 } 1250 1251 /* init iorq and load iopb from it */ 1252 1253 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1254 bp->b_bcount / XYFM_BPS, dbuf, bp); 1255 1256 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1257 1258 /* Instrumentation. */ 1259 disk_busy(&xysc->sc_dk); 1260 1261 return (XY_ERR_AOK); 1262 } 1263 1264 1265 /* 1266 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1267 * if ok. if it fail returns an error code. type is XY_SUB_*. 1268 * 1269 * note: caller frees iorq in all cases except NORM 1270 * 1271 * return value: 1272 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1273 * WAIT: XY_AOK (success), <error-code> (failed) 1274 * POLL: <same as WAIT> 1275 * NOQ : <same as NORM> 1276 * 1277 * there are three sources for i/o requests: 1278 * [1] xystrategy: normal block I/O, using "struct buf" system. 1279 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1280 * [3] open/ioctl: these are I/O requests done in the context of a process, 1281 * and the process should block until they are done. 1282 * 1283 * software state is stored in the iorq structure. each iorq has an 1284 * iopb structure. the hardware understands the iopb structure. 1285 * every command must go through an iopb. a 450 handles one iopb at a 1286 * time, where as a 451 can take them in chains. [the 450 claims it 1287 * can handle chains, but is appears to be buggy...] iopb are allocated 1288 * in DVMA space at boot up time. each disk gets one iopb, and the 1289 * controller gets one (for POLL and WAIT commands). what happens if 1290 * the iopb is busy? for i/o type [1], the buffers are queued at the 1291 * "buff" layer and * picked up later by the interrupt routine. for case 1292 * [2] we can only be blocked if there is a WAIT type I/O request being 1293 * run. since this can only happen when we are crashing, we wait a sec 1294 * and then steal the IOPB. for case [3] the process can sleep 1295 * on the iorq free list until some iopbs are available. 1296 */ 1297 1298 int 1299 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1300 { 1301 struct xy_iopb *iopb; 1302 u_long iopbaddr; 1303 1304 #ifdef XYC_DEBUG 1305 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1306 xycsc->sc_dev.dv_xname, iorq, type); 1307 #endif 1308 1309 /* first check and see if controller is busy */ 1310 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1311 #ifdef XYC_DEBUG 1312 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1313 #endif 1314 if (type == XY_SUB_NOQ) 1315 return (XY_ERR_FAIL); /* failed */ 1316 switch (type) { 1317 case XY_SUB_NORM: 1318 return XY_ERR_AOK; /* success */ 1319 case XY_SUB_WAIT: 1320 while (iorq->iopb->done == 0) { 1321 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1322 } 1323 return (iorq->errno); 1324 case XY_SUB_POLL: /* steal controller */ 1325 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1326 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1327 panic("xyc_submit_iorq: stuck xyc"); 1328 printf("%s: stole controller\n", 1329 xycsc->sc_dev.dv_xname); 1330 break; 1331 default: 1332 panic("xyc_submit_iorq adding"); 1333 } 1334 } 1335 1336 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1337 if (iopb == NULL) { /* nothing doing? */ 1338 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1339 return(XY_ERR_AOK); 1340 panic("xyc_submit_iorq: xyc_chain failed!"); 1341 } 1342 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1343 1344 XYC_GO(xycsc->xyc, iopbaddr); 1345 1346 /* command now running, wrap it up */ 1347 switch (type) { 1348 case XY_SUB_NORM: 1349 case XY_SUB_NOQ: 1350 return (XY_ERR_AOK); /* success */ 1351 case XY_SUB_WAIT: 1352 while (iorq->iopb->done == 0) { 1353 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1354 } 1355 return (iorq->errno); 1356 case XY_SUB_POLL: 1357 return (xyc_piodriver(xycsc, iorq)); 1358 default: 1359 panic("xyc_submit_iorq wrap up"); 1360 } 1361 panic("xyc_submit_iorq"); 1362 return 0; /* not reached */ 1363 } 1364 1365 1366 /* 1367 * xyc_chain: build a chain. return dvma address of first element in 1368 * the chain. iorq != NULL: means we only want that item on the chain. 1369 */ 1370 1371 struct xy_iopb * 1372 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1373 { 1374 int togo, chain, hand; 1375 struct xy_iopb *iopb, *prev_iopb; 1376 1377 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1378 1379 /* 1380 * promote control IOPB to the top 1381 */ 1382 if (iorq == NULL) { 1383 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1384 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1385 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1386 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1387 } 1388 1389 /* 1390 * special case: if iorq != NULL then we have a POLL or WAIT request. 1391 * we let these take priority and do them first. 1392 */ 1393 if (iorq) { 1394 xycsc->xy_chain[0] = iorq; 1395 iorq->iopb->chen = 0; 1396 return(iorq->iopb); 1397 } 1398 1399 /* 1400 * NORM case: do round robin and maybe chain (if allowed and possible) 1401 */ 1402 1403 chain = 0; 1404 hand = xycsc->xy_hand; 1405 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1406 1407 for (togo = XYC_MAXIOPB ; 1408 togo > 0 ; 1409 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1410 { 1411 1412 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1413 xycsc->iopbase[hand].done) 1414 continue; /* not ready-for-i/o */ 1415 1416 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1417 iopb = xycsc->xy_chain[chain]->iopb; 1418 iopb->chen = 0; 1419 if (chain != 0) { /* adding a link to a chain? */ 1420 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1421 prev_iopb->chen = 1; 1422 prev_iopb->nxtiopb = 0xffff & 1423 dvma_kvtopa(iopb, xycsc->bustype); 1424 } else { /* head of chain */ 1425 iorq = xycsc->xy_chain[chain]; 1426 } 1427 chain++; 1428 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1429 } 1430 return(iorq ? iorq->iopb : NULL); 1431 } 1432 1433 /* 1434 * xyc_piodriver 1435 * 1436 * programmed i/o driver. this function takes over the computer 1437 * and drains off the polled i/o request. it returns the status of the iorq 1438 * the caller is interesting in. 1439 */ 1440 int 1441 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1442 { 1443 int nreset = 0; 1444 int retval = 0; 1445 u_long res; 1446 1447 #ifdef XYC_DEBUG 1448 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1449 #endif 1450 1451 while (iorq->iopb->done == 0) { 1452 1453 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1454 1455 /* we expect some progress soon */ 1456 if (res == XY_ERR_FAIL && nreset >= 2) { 1457 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1458 #ifdef XYC_DEBUG 1459 printf("xyc_piodriver: timeout\n"); 1460 #endif 1461 return (XY_ERR_FAIL); 1462 } 1463 if (res == XY_ERR_FAIL) { 1464 if (xyc_reset(xycsc, 0, 1465 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1466 XY_ERR_FAIL, 1467 0) == XY_ERR_FAIL) 1468 return (XY_ERR_FAIL); /* flushes all but POLL 1469 * requests, resets */ 1470 continue; 1471 } 1472 1473 xyc_remove_iorq(xycsc); /* may resubmit request */ 1474 1475 if (iorq->iopb->done == 0) 1476 xyc_start(xycsc, iorq); 1477 } 1478 1479 /* get return value */ 1480 1481 retval = iorq->errno; 1482 1483 #ifdef XYC_DEBUG 1484 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1485 iorq->errno, xyc_e2str(iorq->errno)); 1486 #endif 1487 1488 /* start up any bufs that have queued */ 1489 1490 xyc_start(xycsc, NULL); 1491 1492 return (retval); 1493 } 1494 1495 /* 1496 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1497 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1498 */ 1499 void 1500 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1501 { 1502 struct xy_iopb tmpiopb; 1503 u_long addr; 1504 int del; 1505 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1506 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1507 xycsc->ciopb->ien = 0; 1508 xycsc->ciopb->com = XYCMD_RST; 1509 xycsc->ciopb->unit = xysc->xy_drive; 1510 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1511 1512 XYC_GO(xycsc->xyc, addr); 1513 1514 del = XYC_RESETUSEC; 1515 while (del > 0) { 1516 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1517 DELAY(1); 1518 del--; 1519 } 1520 1521 if (del <= 0 || xycsc->ciopb->errs) { 1522 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1523 xyc_e2str(xycsc->ciopb->errno)); 1524 del = xycsc->xyc->xyc_rsetup; 1525 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1526 panic("xyc_reset"); 1527 } else { 1528 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1529 } 1530 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1531 } 1532 1533 1534 /* 1535 * xyc_reset: reset everything: requests are marked as errors except 1536 * a polled request (which is resubmitted) 1537 */ 1538 int 1539 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1540 int error, struct xy_softc *xysc) 1541 { 1542 int del = 0, lcv, retval = XY_ERR_AOK; 1543 struct xy_iorq *iorq; 1544 1545 /* soft reset hardware */ 1546 1547 if (!quiet) 1548 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1549 del = xycsc->xyc->xyc_rsetup; 1550 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1551 if (del == XY_ERR_FAIL) { 1552 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1553 retval = XY_ERR_FAIL; 1554 } 1555 if (xysc) 1556 xyc_xyreset(xycsc, xysc); 1557 1558 /* fix queues based on "blast-mode" */ 1559 1560 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1561 iorq = &xycsc->reqs[lcv]; 1562 1563 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1564 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1565 XY_STATE(iorq->mode) != XY_SUB_NORM) 1566 /* is it active? */ 1567 continue; 1568 1569 if (blastmode == XY_RSET_ALL || 1570 blastmode != iorq) { 1571 /* failed */ 1572 iorq->errno = error; 1573 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1574 switch (XY_STATE(iorq->mode)) { 1575 case XY_SUB_NORM: 1576 iorq->buf->b_error = EIO; 1577 iorq->buf->b_flags |= B_ERROR; 1578 iorq->buf->b_resid = 1579 iorq->sectcnt * XYFM_BPS; 1580 /* Sun3: map/unmap regardless of B_PHYS */ 1581 dvma_mapout(iorq->dbufbase, 1582 iorq->buf->b_bcount); 1583 (void)BUFQ_GET(iorq->xy->xyq); 1584 disk_unbusy(&iorq->xy->sc_dk, 1585 (iorq->buf->b_bcount - iorq->buf->b_resid), 1586 (iorq->buf->b_flags & B_READ)); 1587 biodone(iorq->buf); 1588 iorq->mode = XY_SUB_FREE; 1589 break; 1590 case XY_SUB_WAIT: 1591 wakeup(iorq); 1592 case XY_SUB_POLL: 1593 iorq->mode = 1594 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1595 break; 1596 } 1597 1598 } else { 1599 1600 /* resubmit, no need to do anything here */ 1601 } 1602 } 1603 1604 /* 1605 * now, if stuff is waiting, start it. 1606 * since we just reset it should go 1607 */ 1608 xyc_start(xycsc, NULL); 1609 1610 return (retval); 1611 } 1612 1613 /* 1614 * xyc_start: start waiting buffers 1615 */ 1616 1617 void 1618 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1619 { 1620 int lcv; 1621 struct xy_softc *xy; 1622 1623 if (iorq == NULL) { 1624 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1625 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1626 if (BUFQ_PEEK(xy->xyq) == NULL) continue; 1627 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1628 xyc_startbuf(xycsc, xy, BUFQ_PEEK(xy->xyq)); 1629 } 1630 } 1631 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1632 } 1633 1634 /* 1635 * xyc_remove_iorq: remove "done" IOPB's. 1636 */ 1637 1638 int 1639 xyc_remove_iorq(struct xyc_softc *xycsc) 1640 { 1641 int errno, rq, comm, errs; 1642 struct xyc *xyc = xycsc->xyc; 1643 u_long addr; 1644 struct xy_iopb *iopb; 1645 struct xy_iorq *iorq; 1646 struct buf *bp; 1647 1648 if (xyc->xyc_csr & XYC_DERR) { 1649 /* 1650 * DOUBLE ERROR: should never happen under normal use. This 1651 * error is so bad, you can't even tell which IOPB is bad, so 1652 * we dump them all. 1653 */ 1654 errno = XY_ERR_DERR; 1655 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1656 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1657 printf("%s: soft reset failed!\n", 1658 xycsc->sc_dev.dv_xname); 1659 panic("xyc_remove_iorq: controller DEAD"); 1660 } 1661 return (XY_ERR_AOK); 1662 } 1663 1664 /* 1665 * get iopb that is done, loop down the chain 1666 */ 1667 1668 if (xyc->xyc_csr & XYC_ERR) { 1669 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1670 } 1671 if (xyc->xyc_csr & XYC_IPND) { 1672 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1673 } 1674 1675 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1676 iorq = xycsc->xy_chain[rq]; 1677 if (iorq == NULL) break; /* done ! */ 1678 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1679 continue; /* free, or done */ 1680 iopb = iorq->iopb; 1681 if (iopb->done == 0) 1682 continue; /* not done yet */ 1683 1684 comm = iopb->com; 1685 errs = iopb->errs; 1686 1687 if (errs) 1688 iorq->errno = iopb->errno; 1689 else 1690 iorq->errno = 0; 1691 1692 /* handle non-fatal errors */ 1693 1694 if (errs && 1695 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1696 continue; /* AOK: we resubmitted it */ 1697 1698 1699 /* this iorq is now done (hasn't been restarted or anything) */ 1700 1701 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1702 xyc_perror(iorq, iopb, 0); 1703 1704 /* now, if read/write check to make sure we got all the data 1705 * we needed. (this may not be the case if we got an error in 1706 * the middle of a multisector request). */ 1707 1708 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1709 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1710 /* we just successfully processed a bad144 sector 1711 * note: if we are in bad 144 mode, the pointers have 1712 * been advanced already (see above) and are pointing 1713 * at the bad144 sector. to exit bad144 mode, we 1714 * must advance the pointers 1 sector and issue a new 1715 * request if there are still sectors left to process 1716 * 1717 */ 1718 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1719 1720 /* exit b144 mode */ 1721 iorq->mode = iorq->mode & (~XY_MODE_B144); 1722 1723 if (iorq->sectcnt) { /* more to go! */ 1724 iorq->lasterror = iorq->errno = iopb->errno = 0; 1725 iopb->errs = iopb->done = 0; 1726 iorq->tries = 0; 1727 iopb->scnt = iorq->sectcnt; 1728 iopb->cyl = iorq->blockno / 1729 iorq->xy->sectpercyl; 1730 iopb->head = 1731 (iorq->blockno / iorq->xy->nhead) % 1732 iorq->xy->nhead; 1733 iopb->sect = iorq->blockno % XYFM_BPS; 1734 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1735 iopb->dataa = (addr & 0xffff); 1736 iopb->datar = ((addr & 0xff0000) >> 16); 1737 /* will resubit at end */ 1738 continue; 1739 } 1740 } 1741 /* final cleanup, totally done with this request */ 1742 1743 switch (XY_STATE(iorq->mode)) { 1744 case XY_SUB_NORM: 1745 bp = iorq->buf; 1746 if (errs) { 1747 bp->b_error = EIO; 1748 bp->b_flags |= B_ERROR; 1749 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1750 } else { 1751 bp->b_resid = 0; /* done */ 1752 } 1753 /* Sun3: map/unmap regardless of B_PHYS */ 1754 dvma_mapout(iorq->dbufbase, 1755 iorq->buf->b_bcount); 1756 (void)BUFQ_GET(iorq->xy->xyq); 1757 disk_unbusy(&iorq->xy->sc_dk, 1758 (bp->b_bcount - bp->b_resid), 1759 (bp->b_flags & B_READ)); 1760 iorq->mode = XY_SUB_FREE; 1761 biodone(bp); 1762 break; 1763 case XY_SUB_WAIT: 1764 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1765 wakeup(iorq); 1766 break; 1767 case XY_SUB_POLL: 1768 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1769 break; 1770 } 1771 } 1772 1773 return (XY_ERR_AOK); 1774 } 1775 1776 /* 1777 * xyc_perror: print error. 1778 * - if still_trying is true: we got an error, retried and got a 1779 * different error. in that case lasterror is the old error, 1780 * and errno is the new one. 1781 * - if still_trying is not true, then if we ever had an error it 1782 * is in lasterror. also, if iorq->errno == 0, then we recovered 1783 * from that error (otherwise iorq->errno == iorq->lasterror). 1784 */ 1785 void 1786 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1787 { 1788 1789 int error = iorq->lasterror; 1790 1791 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1792 : iorq->xyc->sc_dev.dv_xname); 1793 if (iorq->buf) 1794 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1795 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1796 printf("%s %d/%d/%d: ", 1797 (iopb->com == XYCMD_RD) ? "read" : "write", 1798 iopb->cyl, iopb->head, iopb->sect); 1799 printf("%s", xyc_e2str(error)); 1800 1801 if (still_trying) 1802 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1803 else 1804 if (iorq->errno == 0) 1805 printf(" [recovered in %d tries]", iorq->tries); 1806 1807 printf("\n"); 1808 } 1809 1810 /* 1811 * xyc_error: non-fatal error encountered... recover. 1812 * return AOK if resubmitted, return FAIL if this iopb is done 1813 */ 1814 int 1815 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 1816 int comm) 1817 { 1818 int errno = iorq->errno; 1819 int erract = xyc_entoact(errno); 1820 int oldmode, advance, i; 1821 1822 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1823 oldmode = iorq->mode; 1824 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1825 /* make xyc_start ignore us */ 1826 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1827 iorq->mode = oldmode; 1828 } 1829 /* check for read/write to a sector in bad144 table if bad: redirect 1830 * request to bad144 area */ 1831 1832 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1833 (iorq->mode & XY_MODE_B144) == 0) { 1834 advance = iorq->sectcnt - iopb->scnt; 1835 XYC_ADVANCE(iorq, advance); 1836 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1837 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1838 iorq->blockno % iorq->xy->nsect)) != -1) { 1839 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1840 * redirect */ 1841 iopb->errno = iopb->done = iopb->errs = 0; 1842 iopb->scnt = 1; 1843 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1844 /* second to last acyl */ 1845 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1846 * standard */ 1847 iopb->head = i / iorq->xy->nhead; 1848 iopb->sect = i % iorq->xy->nhead; 1849 /* will resubmit when we come out of remove_iorq */ 1850 return (XY_ERR_AOK); /* recovered! */ 1851 } 1852 } 1853 1854 /* 1855 * it isn't a bad144 sector, must be real error! see if we can retry 1856 * it? 1857 */ 1858 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1859 xyc_perror(iorq, iopb, 1); /* inform of error state 1860 * change */ 1861 iorq->lasterror = errno; 1862 1863 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1864 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1865 iorq->tries++; 1866 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1867 /* will resubmit at end of remove_iorq */ 1868 return (XY_ERR_AOK); /* recovered! */ 1869 } 1870 1871 /* failed to recover from this error */ 1872 return (XY_ERR_FAIL); 1873 } 1874 1875 /* 1876 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1877 */ 1878 void 1879 xyc_tick(void *arg) 1880 { 1881 struct xyc_softc *xycsc = arg; 1882 int lcv, s, reset = 0; 1883 1884 /* reduce ttl for each request if one goes to zero, reset xyc */ 1885 s = splbio(); 1886 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1887 if (xycsc->reqs[lcv].mode == 0 || 1888 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1889 continue; 1890 xycsc->reqs[lcv].ttl--; 1891 if (xycsc->reqs[lcv].ttl == 0) 1892 reset = 1; 1893 } 1894 if (reset) { 1895 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1896 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1897 } 1898 splx(s); 1899 1900 /* until next time */ 1901 1902 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1903 } 1904 1905 /* 1906 * xyc_ioctlcmd: this function provides a user level interface to the 1907 * controller via ioctl. this allows "format" programs to be written 1908 * in user code, and is also useful for some debugging. we return 1909 * an error code. called at user priority. 1910 * 1911 * XXX missing a few commands (see the 7053 driver for ideas) 1912 */ 1913 int 1914 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 1915 { 1916 int s, err, rqno; 1917 void *dvmabuf = NULL; 1918 struct xyc_softc *xycsc; 1919 1920 /* check sanity of requested command */ 1921 1922 switch (xio->cmd) { 1923 1924 case XYCMD_NOP: /* no op: everything should be zero */ 1925 if (xio->subfn || xio->dptr || xio->dlen || 1926 xio->block || xio->sectcnt) 1927 return (EINVAL); 1928 break; 1929 1930 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1931 case XYCMD_WR: 1932 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1933 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1934 return (EINVAL); 1935 break; 1936 1937 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1938 return (EINVAL); 1939 1940 break; 1941 1942 default: 1943 return (EINVAL);/* ??? */ 1944 } 1945 1946 /* create DVMA buffer for request if needed */ 1947 1948 if (xio->dlen) { 1949 dvmabuf = dvma_malloc(xio->dlen); 1950 if (xio->cmd == XYCMD_WR) { 1951 err = copyin(xio->dptr, dvmabuf, xio->dlen); 1952 if (err) { 1953 dvma_free(dvmabuf, xio->dlen); 1954 return (err); 1955 } 1956 } 1957 } 1958 /* do it! */ 1959 1960 err = 0; 1961 xycsc = xy->parent; 1962 s = splbio(); 1963 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 1964 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 1965 if (rqno == XY_ERR_FAIL) { 1966 err = EIO; 1967 goto done; 1968 } 1969 xio->errno = xycsc->ciorq->errno; 1970 xio->tries = xycsc->ciorq->tries; 1971 XYC_DONE(xycsc, err); 1972 1973 if (xio->cmd == XYCMD_RD) 1974 err = copyout(dvmabuf, xio->dptr, xio->dlen); 1975 1976 done: 1977 splx(s); 1978 if (dvmabuf) 1979 dvma_free(dvmabuf, xio->dlen); 1980 return (err); 1981 } 1982 1983 /* 1984 * xyc_e2str: convert error code number into an error string 1985 */ 1986 const char * 1987 xyc_e2str(int no) 1988 { 1989 switch (no) { 1990 case XY_ERR_FAIL: 1991 return ("Software fatal error"); 1992 case XY_ERR_DERR: 1993 return ("DOUBLE ERROR"); 1994 case XY_ERR_AOK: 1995 return ("Successful completion"); 1996 case XY_ERR_IPEN: 1997 return("Interrupt pending"); 1998 case XY_ERR_BCFL: 1999 return("Busy conflict"); 2000 case XY_ERR_TIMO: 2001 return("Operation timeout"); 2002 case XY_ERR_NHDR: 2003 return("Header not found"); 2004 case XY_ERR_HARD: 2005 return("Hard ECC error"); 2006 case XY_ERR_ICYL: 2007 return("Illegal cylinder address"); 2008 case XY_ERR_ISEC: 2009 return("Illegal sector address"); 2010 case XY_ERR_SMAL: 2011 return("Last sector too small"); 2012 case XY_ERR_SACK: 2013 return("Slave ACK error (non-existent memory)"); 2014 case XY_ERR_CHER: 2015 return("Cylinder and head/header error"); 2016 case XY_ERR_SRTR: 2017 return("Auto-seek retry successful"); 2018 case XY_ERR_WPRO: 2019 return("Write-protect error"); 2020 case XY_ERR_UIMP: 2021 return("Unimplemented command"); 2022 case XY_ERR_DNRY: 2023 return("Drive not ready"); 2024 case XY_ERR_SZER: 2025 return("Sector count zero"); 2026 case XY_ERR_DFLT: 2027 return("Drive faulted"); 2028 case XY_ERR_ISSZ: 2029 return("Illegal sector size"); 2030 case XY_ERR_SLTA: 2031 return("Self test A"); 2032 case XY_ERR_SLTB: 2033 return("Self test B"); 2034 case XY_ERR_SLTC: 2035 return("Self test C"); 2036 case XY_ERR_SOFT: 2037 return("Soft ECC error"); 2038 case XY_ERR_SFOK: 2039 return("Soft ECC error recovered"); 2040 case XY_ERR_IHED: 2041 return("Illegal head"); 2042 case XY_ERR_DSEQ: 2043 return("Disk sequencer error"); 2044 case XY_ERR_SEEK: 2045 return("Seek error"); 2046 default: 2047 return ("Unknown error"); 2048 } 2049 } 2050 2051 int 2052 xyc_entoact(int errno) 2053 { 2054 switch (errno) { 2055 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2056 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2057 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2058 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2059 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2060 2061 return(XY_ERA_PROG); /* program error ! */ 2062 2063 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2064 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2065 case XY_ERR_SOFT: 2066 2067 return(XY_ERA_HARD); /* hard error, retry */ 2068 2069 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2070 2071 return(XY_ERA_RSET); /* hard error reset */ 2072 2073 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2074 2075 return(XY_ERA_SOFT); /* an FYI error */ 2076 2077 case XY_ERR_WPRO: 2078 2079 return(XY_ERA_WPRO); /* write protect */ 2080 } 2081 2082 return(XY_ERA_PROG); /* ??? */ 2083 } 2084
Indexes created Mon Sep 29 21:09:56 GMT 2025