xy.c revision 1.55
1 /* $NetBSD: xy.c,v 1.55 2006/03/29 14:34:29 tsutsui 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 1.55 2006/03/29 14:34:29 tsutsui 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 81 #include <uvm/uvm_extern.h> 82 83 #include <dev/sun/disklabel.h> 84 85 #include <machine/autoconf.h> 86 #include <machine/dvma.h> 87 88 #include <sun3/dev/xyreg.h> 89 #include <sun3/dev/xyvar.h> 90 #include <sun3/dev/xio.h> 91 92 #include "locators.h" 93 94 /* 95 * Print a complaint when no xy children were specified 96 * in the config file. Better than a link error... 97 * 98 * XXX: Some folks say this driver should be split in two, 99 * but that seems pointless with ONLY one type of child. 100 */ 101 #include "xy.h" 102 #if NXY == 0 103 #error "xyc but no xy?" 104 #endif 105 106 /* 107 * macros 108 */ 109 110 /* 111 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 112 */ 113 #define XYC_GO(XYC, ADDR) { \ 114 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 115 (ADDR) = ((ADDR) >> 8); \ 116 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 117 (ADDR) = ((ADDR) >> 8); \ 118 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 119 (ADDR) = ((ADDR) >> 8); \ 120 (XYC)->xyc_reloc_hi = (ADDR); \ 121 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 122 } 123 124 /* 125 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 126 */ 127 128 #define XYC_DONE(SC,ER) { \ 129 if ((ER) == XY_ERR_AOK) { \ 130 (ER) = (SC)->ciorq->errno; \ 131 (SC)->ciorq->mode = XY_SUB_FREE; \ 132 wakeup((SC)->ciorq); \ 133 } \ 134 } 135 136 /* 137 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 138 */ 139 140 #define XYC_ADVANCE(IORQ, N) { \ 141 if (N) { \ 142 (IORQ)->sectcnt -= (N); \ 143 (IORQ)->blockno += (N); \ 144 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 145 } \ 146 } 147 148 /* 149 * note - addresses you can sleep on: 150 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 151 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 152 */ 153 154 155 /* 156 * function prototypes 157 * "xyc_*" functions are internal, all others are external interfaces 158 */ 159 160 /* internals */ 161 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 162 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 163 const char *xyc_e2str(int); 164 int xyc_entoact(int); 165 int xyc_error(struct xyc_softc *, struct xy_iorq *, struct xy_iopb *, int); 166 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 167 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 168 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 169 int xyc_remove_iorq(struct xyc_softc *); 170 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 171 struct xy_softc *); 172 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, struct xy_softc *, 173 int, u_long, int, caddr_t, struct buf *); 174 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 175 void xyc_start(struct xyc_softc *, struct xy_iorq *); 176 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 177 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 178 void xyc_tick(void *); 179 int xyc_unbusy(struct xyc *, int); 180 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 181 182 /* machine interrupt hook */ 183 int xycintr(void *); 184 185 /* autoconf */ 186 static int xycmatch(struct device *, struct cfdata *, void *); 187 static void xycattach(struct device *, struct device *, void *); 188 static int xyc_print(void *, const char *); 189 190 static int xymatch(struct device *, struct cfdata *, void *); 191 static void xyattach(struct device *, struct device *, void *); 192 static void xy_init(struct xy_softc *); 193 194 static void xydummystrat(struct buf *); 195 int xygetdisklabel(struct xy_softc *, void *); 196 197 /* 198 * cfattach's: device driver interface to autoconfig 199 */ 200 201 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 202 xycmatch, xycattach, NULL, NULL); 203 204 CFATTACH_DECL(xy, sizeof(struct xy_softc), 205 xymatch, xyattach, NULL, NULL); 206 207 extern struct cfdriver xy_cd; 208 209 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 210 int driveno; /* unit number */ 211 }; 212 213 dev_type_open(xyopen); 214 dev_type_close(xyclose); 215 dev_type_read(xyread); 216 dev_type_write(xywrite); 217 dev_type_ioctl(xyioctl); 218 dev_type_strategy(xystrategy); 219 dev_type_dump(xydump); 220 dev_type_size(xysize); 221 222 const struct bdevsw xy_bdevsw = { 223 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 224 }; 225 226 const struct cdevsw xy_cdevsw = { 227 xyopen, xyclose, xyread, xywrite, xyioctl, 228 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 229 }; 230 231 /* 232 * dkdriver 233 */ 234 235 struct dkdriver xydkdriver = { xystrategy }; 236 237 /* 238 * start: disk label fix code (XXX) 239 */ 240 241 static void *xy_labeldata; 242 243 static void 244 xydummystrat(struct buf *bp) 245 { 246 if (bp->b_bcount != XYFM_BPS) 247 panic("xydummystrat"); 248 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 249 bp->b_flags |= B_DONE; 250 bp->b_flags &= ~B_BUSY; 251 } 252 253 int 254 xygetdisklabel(struct xy_softc *xy, void *b) 255 { 256 const char *err; 257 struct sun_disklabel *sdl; 258 259 /* We already have the label data in `b'; setup for dummy strategy */ 260 xy_labeldata = b; 261 262 /* Required parameter for readdisklabel() */ 263 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 264 265 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xy->sc_dev), RAW_PART), 266 xydummystrat, 267 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 268 if (err) { 269 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 270 return(XY_ERR_FAIL); 271 } 272 273 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 274 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 275 if (sdl->sl_magic == SUN_DKMAGIC) 276 xy->pcyl = sdl->sl_pcyl; 277 else { 278 printf("%s: WARNING: no `pcyl' in disk label.\n", 279 xy->sc_dev.dv_xname); 280 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 281 xy->sc_dk.dk_label->d_acylinders; 282 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 283 xy->sc_dev.dv_xname, xy->pcyl); 284 } 285 286 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 287 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 288 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 289 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 290 xy->sectpercyl = xy->nhead * xy->nsect; 291 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 292 * sun->bsd */ 293 return(XY_ERR_AOK); 294 } 295 296 /* 297 * end: disk label fix code (XXX) 298 */ 299 300 /* 301 * a u t o c o n f i g f u n c t i o n s 302 */ 303 304 /* 305 * xycmatch: determine if xyc is present or not. we do a 306 * soft reset to detect the xyc. 307 */ 308 static int 309 xycmatch(struct device *parent, struct cfdata *cf, void *aux) 310 { 311 struct confargs *ca = aux; 312 313 /* No default VME address. */ 314 if (ca->ca_paddr == -1) 315 return (0); 316 317 /* Make sure something is there... */ 318 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 319 return (0); 320 321 /* Default interrupt priority. */ 322 if (ca->ca_intpri == -1) 323 ca->ca_intpri = 2; 324 325 return (1); 326 } 327 328 /* 329 * xycattach: attach controller 330 */ 331 static void 332 xycattach(struct device *parent, struct device *self, void *aux) 333 { 334 struct xyc_softc *xyc = (void *) self; 335 struct confargs *ca = aux; 336 struct xyc_attach_args xa; 337 int lcv, err, res, pbsz; 338 void *tmp, *tmp2; 339 u_long ultmp; 340 341 /* get addressing and intr level stuff from autoconfig and load it 342 * into our xyc_softc. */ 343 344 xyc->xyc = (struct xyc *) 345 bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(struct xyc)); 346 xyc->bustype = ca->ca_bustype; 347 xyc->ipl = ca->ca_intpri; 348 xyc->vector = ca->ca_intvec; 349 xyc->no_ols = 0; /* XXX should be from config */ 350 351 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 352 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 353 354 /* 355 * allocate and zero buffers 356 * check boundaries of the KVA's ... all IOPBs must reside in 357 * the same 64K region. 358 */ 359 360 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 361 tmp = tmp2 = (struct xy_iopb *) dvma_malloc(pbsz); /* KVA */ 362 ultmp = (u_long) tmp; 363 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 364 tmp = (struct xy_iopb *) dvma_malloc(pbsz); /* retry! */ 365 dvma_free(tmp2, pbsz); 366 ultmp = (u_long) tmp; 367 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 368 printf("%s: can't alloc IOPB mem in 64K\n", 369 xyc->sc_dev.dv_xname); 370 return; 371 } 372 } 373 memset(tmp, 0, pbsz); 374 xyc->iopbase = tmp; 375 xyc->dvmaiopb = (struct xy_iopb *) 376 dvma_kvtopa(xyc->iopbase, xyc->bustype); 377 xyc->reqs = (struct xy_iorq *) 378 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 379 if (xyc->reqs == NULL) 380 panic("xyc malloc"); 381 memset(xyc->reqs, 0, XYC_MAXIOPB * sizeof(struct xy_iorq)); 382 383 /* 384 * init iorq to iopb pointers, and non-zero fields in the 385 * iopb which never change. 386 */ 387 388 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 389 xyc->xy_chain[lcv] = NULL; 390 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 391 xyc->iopbase[lcv].asr = 1; /* always the same */ 392 xyc->iopbase[lcv].eef = 1; /* always the same */ 393 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 394 xyc->iopbase[lcv].aud = 1; /* always the same */ 395 xyc->iopbase[lcv].relo = 1; /* always the same */ 396 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 397 } 398 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 399 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 400 xyc->xy_hand = 0; 401 402 /* read controller parameters and insure we have a 450/451 */ 403 404 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 405 res = xyc->ciopb->ctyp; 406 XYC_DONE(xyc, err); 407 if (res != XYCT_450) { 408 if (err) 409 printf(": %s: ", xyc_e2str(err)); 410 printf(": doesn't identify as a 450/451\n"); 411 return; 412 } 413 printf(": Xylogics 450/451"); 414 if (xyc->no_ols) 415 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 416 printf("\n"); 417 if (err) { 418 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 419 xyc_e2str(err)); 420 return; 421 } 422 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 423 printf("%s: 24 bit addressing turned off\n", 424 xyc->sc_dev.dv_xname); 425 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 426 printf("to enable 24 bit mode and this driver\n"); 427 return; 428 } 429 430 /* link in interrupt with higher level software */ 431 isr_add_vectored(xycintr, (void *)xyc, 432 ca->ca_intpri, ca->ca_intvec); 433 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 434 xyc->sc_dev.dv_xname, "intr"); 435 436 callout_init(&xyc->sc_tick_ch); 437 438 /* now we must look for disks using autoconfig */ 439 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 440 (void) config_found(self, (void *) &xa, xyc_print); 441 442 /* start the watchdog clock */ 443 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 444 } 445 446 static int 447 xyc_print(void *aux, const char *name) 448 { 449 struct xyc_attach_args *xa = aux; 450 451 if (name != NULL) 452 aprint_normal("%s: ", name); 453 454 if (xa->driveno != -1) 455 aprint_normal(" drive %d", xa->driveno); 456 457 return UNCONF; 458 } 459 460 /* 461 * xymatch: probe for disk. 462 * 463 * note: we almost always say disk is present. this allows us to 464 * spin up and configure a disk after the system is booted (we can 465 * call xyattach!). Also, wire down the relationship between the 466 * xy* and xyc* devices, to simplify boot device identification. 467 */ 468 static int 469 xymatch(struct device *parent, struct cfdata *cf, void *aux) 470 { 471 struct xyc_attach_args *xa = aux; 472 int xy_unit; 473 474 /* Match only on the "wired-down" controller+disk. */ 475 xy_unit = device_unit(parent) * 2 + xa->driveno; 476 if (cf->cf_unit != xy_unit) 477 return (0); 478 479 return (1); 480 } 481 482 /* 483 * xyattach: attach a disk. 484 */ 485 static void 486 xyattach(struct device *parent, struct device *self, void *aux) 487 { 488 struct xy_softc *xy = (void *) self; 489 struct xyc_softc *xyc = (void *) parent; 490 struct xyc_attach_args *xa = aux; 491 492 printf("\n"); 493 494 /* 495 * Always re-initialize the disk structure. We want statistics 496 * to start with a clean slate. 497 */ 498 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 499 xy->sc_dk.dk_driver = &xydkdriver; 500 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 501 502 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 503 xy->flags = 0; 504 xy->parent = xyc; 505 506 /* init queue of waiting bufs */ 507 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 508 xy->xyrq = &xyc->reqs[xa->driveno]; 509 510 xy->xy_drive = xa->driveno; 511 xyc->sc_drives[xa->driveno] = xy; 512 513 /* Do init work common to attach and open. */ 514 xy_init(xy); 515 } 516 517 /* 518 * end of autoconfig functions 519 */ 520 521 /* 522 * Initialize a disk. This can be called from both autoconf and 523 * also from xyopen/xystrategy. 524 */ 525 static void 526 xy_init(struct xy_softc *xy) 527 { 528 struct xyc_softc *xyc; 529 struct dkbad *dkb; 530 void *dvmabuf; 531 int err, spt, mb, blk, lcv, fullmode, newstate; 532 533 xyc = xy->parent; 534 xy->state = XY_DRIVE_ATTACHING; 535 newstate = XY_DRIVE_UNKNOWN; 536 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 537 dvmabuf = dvma_malloc(XYFM_BPS); 538 539 /* first try and reset the drive */ 540 541 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 542 XYC_DONE(xyc, err); 543 if (err == XY_ERR_DNRY) { 544 printf("%s: drive %d: off-line\n", 545 xy->sc_dev.dv_xname, xy->xy_drive); 546 goto done; 547 } 548 if (err) { 549 printf("%s: ERROR 0x%02x (%s)\n", 550 xy->sc_dev.dv_xname, err, xyc_e2str(err)); 551 goto done; 552 } 553 printf("%s: drive %d ready", 554 xy->sc_dev.dv_xname, xy->xy_drive); 555 556 /* 557 * now set drive parameters (to semi-bogus values) so we can read the 558 * disk label. 559 */ 560 xy->pcyl = xy->ncyl = 1; 561 xy->acyl = 0; 562 xy->nhead = 1; 563 xy->nsect = 1; 564 xy->sectpercyl = 1; 565 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 566 xy->dkb.bt_bad[lcv].bt_cyl = 567 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 568 569 /* read disk label */ 570 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 571 xy->drive_type++) { 572 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 573 dvmabuf, fullmode); 574 XYC_DONE(xyc, err); 575 if (err == XY_ERR_AOK) break; 576 } 577 578 if (err != XY_ERR_AOK) { 579 printf("%s: reading disk label failed: %s\n", 580 xy->sc_dev.dv_xname, xyc_e2str(err)); 581 goto done; 582 } 583 printf("%s: drive type %d\n", 584 xy->sc_dev.dv_xname, xy->drive_type); 585 586 newstate = XY_DRIVE_NOLABEL; 587 588 xy->hw_spt = spt = 0; /* XXX needed ? */ 589 /* Attach the disk: must be before getdisklabel to malloc label */ 590 disk_attach(&xy->sc_dk); 591 592 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 593 goto done; 594 595 /* inform the user of what is up */ 596 printf("%s: <%s>, pcyl %d\n", 597 xy->sc_dev.dv_xname, 598 (char *)dvmabuf, xy->pcyl); 599 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 600 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 601 xy->sc_dev.dv_xname, mb, 602 xy->ncyl, xy->nhead, xy->nsect); 603 604 /* 605 * 450/451 stupidity: the drive type is encoded into the format 606 * of the disk. the drive type in the IOPB must match the drive 607 * type in the format, or you will not be able to do I/O to the 608 * disk (you get header not found errors). if you have two drives 609 * of different sizes that have the same drive type in their 610 * formatting then you are out of luck. 611 * 612 * this problem was corrected in the 753/7053. 613 */ 614 615 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 616 struct xy_softc *oxy; 617 618 oxy = xyc->sc_drives[lcv]; 619 if (oxy == NULL || oxy == xy) continue; 620 if (oxy->drive_type != xy->drive_type) continue; 621 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 622 xy->nhead != oxy->nhead) { 623 printf("%s: %s and %s must be the same size!\n", 624 xyc->sc_dev.dv_xname, 625 xy ->sc_dev.dv_xname, 626 oxy->sc_dev.dv_xname); 627 panic("xy drive size mismatch"); 628 } 629 } 630 631 632 /* now set the real drive parameters! */ 633 blk = (xy->nsect - 1) + 634 ((xy->nhead - 1) * xy->nsect) + 635 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 636 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 637 XYC_DONE(xyc, err); 638 if (err) { 639 printf("%s: write drive size failed: %s\n", 640 xy->sc_dev.dv_xname, xyc_e2str(err)); 641 goto done; 642 } 643 newstate = XY_DRIVE_ONLINE; 644 645 /* 646 * read bad144 table. this table resides on the first sector of the 647 * last track of the disk (i.e. second cyl of "acyl" area). 648 */ 649 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 650 /* last cyl */ 651 (xy->nhead - 1) * xy->nsect; /* last head */ 652 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 653 dvmabuf, fullmode); 654 XYC_DONE(xyc, err); 655 if (err) { 656 printf("%s: reading bad144 failed: %s\n", 657 xy->sc_dev.dv_xname, xyc_e2str(err)); 658 goto done; 659 } 660 661 /* check dkbad for sanity */ 662 dkb = (struct dkbad *) dvmabuf; 663 for (lcv = 0; lcv < 126; lcv++) { 664 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 665 dkb->bt_bad[lcv].bt_cyl == 0) && 666 dkb->bt_bad[lcv].bt_trksec == 0xffff) 667 continue; /* blank */ 668 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 669 break; 670 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 671 break; 672 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 673 break; 674 } 675 if (lcv != 126) { 676 printf("%s: warning: invalid bad144 sector!\n", 677 xy->sc_dev.dv_xname); 678 } else { 679 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 680 } 681 682 done: 683 xy->state = newstate; 684 dvma_free(dvmabuf, XYFM_BPS); 685 } 686 687 /* 688 * { b , c } d e v s w f u n c t i o n s 689 */ 690 691 /* 692 * xyclose: close device 693 */ 694 int 695 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 696 { 697 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 698 int part = DISKPART(dev); 699 700 /* clear mask bits */ 701 702 switch (fmt) { 703 case S_IFCHR: 704 xy->sc_dk.dk_copenmask &= ~(1 << part); 705 break; 706 case S_IFBLK: 707 xy->sc_dk.dk_bopenmask &= ~(1 << part); 708 break; 709 } 710 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 711 712 return 0; 713 } 714 715 /* 716 * xydump: crash dump system 717 */ 718 int 719 xydump(dev_t dev, daddr_t blkno, caddr_t va, size_t sz) 720 { 721 int unit, part; 722 struct xy_softc *xy; 723 724 unit = DISKUNIT(dev); 725 if (unit >= xy_cd.cd_ndevs) 726 return ENXIO; 727 part = DISKPART(dev); 728 729 xy = xy_cd.cd_devs[unit]; 730 731 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 732 'a' + part); 733 734 return ENXIO; 735 736 /* outline: globals: "dumplo" == sector number of partition to start 737 * dump at (convert to physical sector with partition table) 738 * "dumpsize" == size of dump in clicks "physmem" == size of physical 739 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 740 * physmem) 741 * 742 * dump a copy of physical memory to the dump device starting at sector 743 * "dumplo" in the swap partition (make sure > 0). map in pages as 744 * we go. use polled I/O. 745 * 746 * XXX how to handle NON_CONTIG? 747 */ 748 } 749 750 /* 751 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 752 */ 753 int 754 xyioctl(dev_t dev, u_long command, caddr_t addr, int flag, struct lwp *l) 755 { 756 struct xy_softc *xy; 757 struct xd_iocmd *xio; 758 int error, s, unit; 759 760 unit = DISKUNIT(dev); 761 762 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 763 return (ENXIO); 764 765 /* switch on ioctl type */ 766 767 switch (command) { 768 case DIOCSBAD: /* set bad144 info */ 769 if ((flag & FWRITE) == 0) 770 return EBADF; 771 s = splbio(); 772 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 773 splx(s); 774 return 0; 775 776 case DIOCGDINFO: /* get disk label */ 777 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 778 return 0; 779 780 case DIOCGPART: /* get partition info */ 781 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 782 ((struct partinfo *) addr)->part = 783 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 784 return 0; 785 786 case DIOCSDINFO: /* set disk label */ 787 if ((flag & FWRITE) == 0) 788 return EBADF; 789 error = setdisklabel(xy->sc_dk.dk_label, 790 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 791 xy->sc_dk.dk_cpulabel); 792 if (error == 0) { 793 if (xy->state == XY_DRIVE_NOLABEL) 794 xy->state = XY_DRIVE_ONLINE; 795 } 796 return error; 797 798 case DIOCWLABEL: /* change write status of disk label */ 799 if ((flag & FWRITE) == 0) 800 return EBADF; 801 if (*(int *) addr) 802 xy->flags |= XY_WLABEL; 803 else 804 xy->flags &= ~XY_WLABEL; 805 return 0; 806 807 case DIOCWDINFO: /* write disk label */ 808 if ((flag & FWRITE) == 0) 809 return EBADF; 810 error = setdisklabel(xy->sc_dk.dk_label, 811 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 812 xy->sc_dk.dk_cpulabel); 813 if (error == 0) { 814 if (xy->state == XY_DRIVE_NOLABEL) 815 xy->state = XY_DRIVE_ONLINE; 816 817 /* Simulate opening partition 0 so write succeeds. */ 818 xy->sc_dk.dk_openmask |= (1 << 0); 819 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 820 xystrategy, xy->sc_dk.dk_label, 821 xy->sc_dk.dk_cpulabel); 822 xy->sc_dk.dk_openmask = 823 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 824 } 825 return error; 826 827 case DIOSXDCMD: 828 xio = (struct xd_iocmd *) addr; 829 if ((error = suser(l->l_proc->p_ucred, &l->l_proc->p_acflag)) != 0) 830 return (error); 831 return (xyc_ioctlcmd(xy, dev, xio)); 832 833 default: 834 return ENOTTY; 835 } 836 } 837 838 /* 839 * xyopen: open drive 840 */ 841 int 842 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 843 { 844 int err, unit, part, s; 845 struct xy_softc *xy; 846 847 /* first, could it be a valid target? */ 848 unit = DISKUNIT(dev); 849 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 850 return (ENXIO); 851 part = DISKPART(dev); 852 err = 0; 853 854 /* 855 * If some other processing is doing init, sleep. 856 */ 857 s = splbio(); 858 while (xy->state == XY_DRIVE_ATTACHING) { 859 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 860 err = EINTR; 861 goto done; 862 } 863 } 864 /* Do we need to init the drive? */ 865 if (xy->state == XY_DRIVE_UNKNOWN) { 866 xy_init(xy); 867 wakeup(&xy->state); 868 } 869 /* Was the init successful? */ 870 if (xy->state == XY_DRIVE_UNKNOWN) { 871 err = EIO; 872 goto done; 873 } 874 875 /* check for partition */ 876 if (part != RAW_PART && 877 (part >= xy->sc_dk.dk_label->d_npartitions || 878 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 879 err = ENXIO; 880 goto done; 881 } 882 883 /* set open masks */ 884 switch (fmt) { 885 case S_IFCHR: 886 xy->sc_dk.dk_copenmask |= (1 << part); 887 break; 888 case S_IFBLK: 889 xy->sc_dk.dk_bopenmask |= (1 << part); 890 break; 891 } 892 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 893 894 done: 895 splx(s); 896 return (err); 897 } 898 899 int 900 xyread(dev_t dev, struct uio *uio, int flags) 901 { 902 903 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 904 } 905 906 int 907 xywrite(dev_t dev, struct uio *uio, int flags) 908 { 909 910 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 911 } 912 913 914 /* 915 * xysize: return size of a partition for a dump 916 */ 917 918 int 919 xysize(dev_t dev) 920 { 921 struct xy_softc *xysc; 922 int unit, part, size, omask; 923 924 /* valid unit? */ 925 unit = DISKUNIT(dev); 926 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 927 return (-1); 928 929 part = DISKPART(dev); 930 omask = xysc->sc_dk.dk_openmask & (1 << part); 931 932 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 933 return (-1); 934 935 /* do it */ 936 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 937 size = -1; /* only give valid size for swap partitions */ 938 else 939 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 940 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 941 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 942 return (-1); 943 return (size); 944 } 945 946 /* 947 * xystrategy: buffering system interface to xy. 948 */ 949 void 950 xystrategy(struct buf *bp) 951 { 952 struct xy_softc *xy; 953 int s, unit; 954 struct disklabel *lp; 955 daddr_t blkno; 956 957 unit = DISKUNIT(bp->b_dev); 958 959 /* check for live device */ 960 961 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 962 bp->b_blkno < 0 || 963 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 964 bp->b_error = EINVAL; 965 goto bad; 966 } 967 968 /* There should always be an open first. */ 969 if (xy->state == XY_DRIVE_UNKNOWN) { 970 bp->b_error = EIO; 971 goto bad; 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 lp = xy->sc_dk.dk_label; 989 990 if (bounds_check_with_label(&xy->sc_dk, bp, 991 (xy->flags & XY_WLABEL) != 0) <= 0) 992 goto done; 993 994 /* 995 * Now convert the block number to absolute and put it in 996 * terms of the device's logical block size. 997 */ 998 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 999 if (DISKPART(bp->b_dev) != RAW_PART) 1000 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1001 1002 bp->b_rawblkno = blkno; 1003 1004 /* 1005 * now we know we have a valid buf structure that we need to do I/O 1006 * on. 1007 */ 1008 1009 s = splbio(); /* protect the queues */ 1010 1011 BUFQ_PUT(xy->xyq, bp); /* XXX disksort_cylinder */ 1012 1013 /* start 'em up */ 1014 1015 xyc_start(xy->parent, NULL); 1016 1017 /* done! */ 1018 1019 splx(s); 1020 return; 1021 1022 bad: /* tells upper layers we have an error */ 1023 bp->b_flags |= B_ERROR; 1024 done: /* tells upper layers we are done with this 1025 * buf */ 1026 bp->b_resid = bp->b_bcount; 1027 biodone(bp); 1028 } 1029 /* 1030 * end of {b,c}devsw functions 1031 */ 1032 1033 /* 1034 * i n t e r r u p t f u n c t i o n 1035 * 1036 * xycintr: hardware interrupt. 1037 */ 1038 int 1039 xycintr(void *v) 1040 { 1041 struct xyc_softc *xycsc = v; 1042 1043 /* kick the event counter */ 1044 xycsc->sc_intrcnt.ev_count++; 1045 1046 /* remove as many done IOPBs as possible */ 1047 xyc_remove_iorq(xycsc); 1048 1049 /* start any iorq's already waiting */ 1050 xyc_start(xycsc, NULL); 1051 1052 return (1); 1053 } 1054 /* 1055 * end of interrupt function 1056 */ 1057 1058 /* 1059 * i n t e r n a l f u n c t i o n s 1060 */ 1061 1062 /* 1063 * xyc_rqinit: fill out the fields of an I/O request 1064 */ 1065 1066 inline void 1067 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, 1068 int md, u_long blk, int cnt, caddr_t db, struct buf *bp) 1069 { 1070 rq->xyc = xyc; 1071 rq->xy = xy; 1072 rq->ttl = XYC_MAXTTL + 10; 1073 rq->mode = md; 1074 rq->tries = rq->errno = rq->lasterror = 0; 1075 rq->blockno = blk; 1076 rq->sectcnt = cnt; 1077 rq->dbuf = rq->dbufbase = db; 1078 rq->buf = bp; 1079 } 1080 1081 /* 1082 * xyc_rqtopb: load up an IOPB based on an iorq 1083 */ 1084 1085 void 1086 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1087 { 1088 u_long block, dp; 1089 1090 /* normal IOPB case, standard stuff */ 1091 1092 /* chain bit handled later */ 1093 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1094 iopb->com = cmd; 1095 iopb->errno = 0; 1096 iopb->errs = 0; 1097 iopb->done = 0; 1098 if (iorq->xy) { 1099 iopb->unit = iorq->xy->xy_drive; 1100 iopb->dt = iorq->xy->drive_type; 1101 } else { 1102 iopb->unit = 0; 1103 iopb->dt = 0; 1104 } 1105 block = iorq->blockno; 1106 if (iorq->xy == NULL || block == 0) { 1107 iopb->sect = iopb->head = iopb->cyl = 0; 1108 } else { 1109 iopb->sect = block % iorq->xy->nsect; 1110 block = block / iorq->xy->nsect; 1111 iopb->head = block % iorq->xy->nhead; 1112 block = block / iorq->xy->nhead; 1113 iopb->cyl = block; 1114 } 1115 iopb->scnt = iorq->sectcnt; 1116 if (iorq->dbuf == NULL) { 1117 iopb->dataa = 0; 1118 iopb->datar = 0; 1119 } else { 1120 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1121 iopb->dataa = (dp & 0xffff); 1122 iopb->datar = ((dp & 0xff0000) >> 16); 1123 } 1124 iopb->subfn = subfun; 1125 } 1126 1127 1128 /* 1129 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1130 */ 1131 1132 int 1133 xyc_unbusy(struct xyc *xyc, int del) 1134 { 1135 while (del-- > 0) { 1136 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1137 break; 1138 DELAY(1); 1139 } 1140 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1141 } 1142 1143 /* 1144 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1145 * note that NORM requests are handled separately. 1146 */ 1147 int 1148 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1149 int scnt, char *dptr, int fullmode) 1150 { 1151 struct xy_iorq *iorq = xycsc->ciorq; 1152 struct xy_iopb *iopb = xycsc->ciopb; 1153 int submode = XY_STATE(fullmode); 1154 1155 /* 1156 * is someone else using the control iopq wait for it if we can 1157 */ 1158 start: 1159 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1160 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1161 return(XY_ERR_FAIL); 1162 goto start; 1163 } 1164 1165 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1166 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1167 iorq->mode = XY_SUB_FREE; 1168 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1169 } 1170 1171 /* init iorq/iopb */ 1172 1173 xyc_rqinit(iorq, xycsc, 1174 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1175 fullmode, block, scnt, dptr, NULL); 1176 1177 /* load IOPB from iorq */ 1178 1179 xyc_rqtopb(iorq, iopb, cmd, subfn); 1180 1181 /* submit it for processing */ 1182 1183 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1184 1185 return(XY_ERR_AOK); 1186 } 1187 1188 /* 1189 * xyc_startbuf 1190 * start a buffer for running 1191 */ 1192 1193 int 1194 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1195 { 1196 int partno; 1197 struct xy_iorq *iorq; 1198 struct xy_iopb *iopb; 1199 u_long block; 1200 caddr_t dbuf; 1201 1202 iorq = xysc->xyrq; 1203 iopb = iorq->iopb; 1204 1205 /* get buf */ 1206 1207 if (bp == NULL) 1208 panic("xyc_startbuf null buf"); 1209 1210 partno = DISKPART(bp->b_dev); 1211 #ifdef XYC_DEBUG 1212 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1213 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1214 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1215 bp->b_bcount, bp->b_data); 1216 #endif 1217 1218 /* 1219 * load request. 1220 * 1221 * also, note that there are two kinds of buf structures, those with 1222 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1223 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1224 * buffer which has already been mapped into DVMA space. (Not on sun3) 1225 * However, if B_PHYS is not set, then the buffer is a normal system 1226 * buffer which does *not* live in DVMA space. In that case we call 1227 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1228 * 1229 * in cases where we do a dvma_mapin, note that iorq points to the buffer 1230 * as mapped into DVMA space, where as the bp->b_data points to its 1231 * non-DVMA mapping. 1232 * 1233 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1234 * into dvma space, only that it was remapped into the kernel. 1235 * We ALWAYS have to remap the kernel buf into DVMA space. 1236 * (It is done inexpensively, using whole segments!) 1237 */ 1238 1239 block = bp->b_rawblkno; 1240 1241 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1242 if (dbuf == NULL) { /* out of DVMA space */ 1243 printf("%s: warning: out of DVMA space\n", 1244 xycsc->sc_dev.dv_xname); 1245 return (XY_ERR_FAIL); /* XXX: need some sort of 1246 * call-back scheme here? */ 1247 } 1248 1249 /* init iorq and load iopb from it */ 1250 1251 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1252 bp->b_bcount / XYFM_BPS, dbuf, bp); 1253 1254 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1255 1256 /* Instrumentation. */ 1257 disk_busy(&xysc->sc_dk); 1258 1259 return (XY_ERR_AOK); 1260 } 1261 1262 1263 /* 1264 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1265 * if ok. if it fail returns an error code. type is XY_SUB_*. 1266 * 1267 * note: caller frees iorq in all cases except NORM 1268 * 1269 * return value: 1270 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1271 * WAIT: XY_AOK (success), <error-code> (failed) 1272 * POLL: <same as WAIT> 1273 * NOQ : <same as NORM> 1274 * 1275 * there are three sources for i/o requests: 1276 * [1] xystrategy: normal block I/O, using "struct buf" system. 1277 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1278 * [3] open/ioctl: these are I/O requests done in the context of a process, 1279 * and the process should block until they are done. 1280 * 1281 * software state is stored in the iorq structure. each iorq has an 1282 * iopb structure. the hardware understands the iopb structure. 1283 * every command must go through an iopb. a 450 handles one iopb at a 1284 * time, where as a 451 can take them in chains. [the 450 claims it 1285 * can handle chains, but is appears to be buggy...] iopb are allocated 1286 * in DVMA space at boot up time. each disk gets one iopb, and the 1287 * controller gets one (for POLL and WAIT commands). what happens if 1288 * the iopb is busy? for i/o type [1], the buffers are queued at the 1289 * "buff" layer and * picked up later by the interrupt routine. for case 1290 * [2] we can only be blocked if there is a WAIT type I/O request being 1291 * run. since this can only happen when we are crashing, we wait a sec 1292 * and then steal the IOPB. for case [3] the process can sleep 1293 * on the iorq free list until some iopbs are available. 1294 */ 1295 1296 int 1297 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1298 { 1299 struct xy_iopb *iopb; 1300 u_long iopbaddr; 1301 1302 #ifdef XYC_DEBUG 1303 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1304 xycsc->sc_dev.dv_xname, iorq, type); 1305 #endif 1306 1307 /* first check and see if controller is busy */ 1308 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1309 #ifdef XYC_DEBUG 1310 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1311 #endif 1312 if (type == XY_SUB_NOQ) 1313 return (XY_ERR_FAIL); /* failed */ 1314 switch (type) { 1315 case XY_SUB_NORM: 1316 return XY_ERR_AOK; /* success */ 1317 case XY_SUB_WAIT: 1318 while (iorq->iopb->done == 0) { 1319 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1320 } 1321 return (iorq->errno); 1322 case XY_SUB_POLL: /* steal controller */ 1323 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1324 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1325 panic("xyc_submit_iorq: stuck xyc"); 1326 printf("%s: stole controller\n", 1327 xycsc->sc_dev.dv_xname); 1328 break; 1329 default: 1330 panic("xyc_submit_iorq adding"); 1331 } 1332 } 1333 1334 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1335 if (iopb == NULL) { /* nothing doing? */ 1336 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1337 return(XY_ERR_AOK); 1338 panic("xyc_submit_iorq: xyc_chain failed!"); 1339 } 1340 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1341 1342 XYC_GO(xycsc->xyc, iopbaddr); 1343 1344 /* command now running, wrap it up */ 1345 switch (type) { 1346 case XY_SUB_NORM: 1347 case XY_SUB_NOQ: 1348 return (XY_ERR_AOK); /* success */ 1349 case XY_SUB_WAIT: 1350 while (iorq->iopb->done == 0) { 1351 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1352 } 1353 return (iorq->errno); 1354 case XY_SUB_POLL: 1355 return (xyc_piodriver(xycsc, iorq)); 1356 default: 1357 panic("xyc_submit_iorq wrap up"); 1358 } 1359 panic("xyc_submit_iorq"); 1360 return 0; /* not reached */ 1361 } 1362 1363 1364 /* 1365 * xyc_chain: build a chain. return dvma address of first element in 1366 * the chain. iorq != NULL: means we only want that item on the chain. 1367 */ 1368 1369 struct xy_iopb * 1370 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1371 { 1372 int togo, chain, hand; 1373 struct xy_iopb *iopb, *prev_iopb; 1374 1375 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1376 1377 /* 1378 * promote control IOPB to the top 1379 */ 1380 if (iorq == NULL) { 1381 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1382 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1383 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1384 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1385 } 1386 1387 /* 1388 * special case: if iorq != NULL then we have a POLL or WAIT request. 1389 * we let these take priority and do them first. 1390 */ 1391 if (iorq) { 1392 xycsc->xy_chain[0] = iorq; 1393 iorq->iopb->chen = 0; 1394 return(iorq->iopb); 1395 } 1396 1397 /* 1398 * NORM case: do round robin and maybe chain (if allowed and possible) 1399 */ 1400 1401 chain = 0; 1402 hand = xycsc->xy_hand; 1403 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1404 1405 for (togo = XYC_MAXIOPB ; 1406 togo > 0 ; 1407 togo--, hand = (hand + 1) % XYC_MAXIOPB) 1408 { 1409 1410 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1411 xycsc->iopbase[hand].done) 1412 continue; /* not ready-for-i/o */ 1413 1414 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1415 iopb = xycsc->xy_chain[chain]->iopb; 1416 iopb->chen = 0; 1417 if (chain != 0) { /* adding a link to a chain? */ 1418 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1419 prev_iopb->chen = 1; 1420 prev_iopb->nxtiopb = 0xffff & 1421 dvma_kvtopa(iopb, xycsc->bustype); 1422 } else { /* head of chain */ 1423 iorq = xycsc->xy_chain[chain]; 1424 } 1425 chain++; 1426 if (xycsc->no_ols) break; /* quit if chaining dis-allowed */ 1427 } 1428 return(iorq ? iorq->iopb : NULL); 1429 } 1430 1431 /* 1432 * xyc_piodriver 1433 * 1434 * programmed i/o driver. this function takes over the computer 1435 * and drains off the polled i/o request. it returns the status of the iorq 1436 * the caller is interesting in. 1437 */ 1438 int 1439 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1440 { 1441 int nreset = 0; 1442 int retval = 0; 1443 u_long res; 1444 1445 #ifdef XYC_DEBUG 1446 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1447 #endif 1448 1449 while (iorq->iopb->done == 0) { 1450 1451 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1452 1453 /* we expect some progress soon */ 1454 if (res == XY_ERR_FAIL && nreset >= 2) { 1455 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1456 #ifdef XYC_DEBUG 1457 printf("xyc_piodriver: timeout\n"); 1458 #endif 1459 return (XY_ERR_FAIL); 1460 } 1461 if (res == XY_ERR_FAIL) { 1462 if (xyc_reset(xycsc, 0, 1463 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1464 XY_ERR_FAIL, 1465 0) == XY_ERR_FAIL) 1466 return (XY_ERR_FAIL); /* flushes all but POLL 1467 * requests, resets */ 1468 continue; 1469 } 1470 1471 xyc_remove_iorq(xycsc); /* may resubmit request */ 1472 1473 if (iorq->iopb->done == 0) 1474 xyc_start(xycsc, iorq); 1475 } 1476 1477 /* get return value */ 1478 1479 retval = iorq->errno; 1480 1481 #ifdef XYC_DEBUG 1482 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1483 iorq->errno, xyc_e2str(iorq->errno)); 1484 #endif 1485 1486 /* start up any bufs that have queued */ 1487 1488 xyc_start(xycsc, NULL); 1489 1490 return (retval); 1491 } 1492 1493 /* 1494 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1495 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1496 */ 1497 void 1498 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1499 { 1500 struct xy_iopb tmpiopb; 1501 u_long addr; 1502 int del; 1503 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1504 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1505 xycsc->ciopb->ien = 0; 1506 xycsc->ciopb->com = XYCMD_RST; 1507 xycsc->ciopb->unit = xysc->xy_drive; 1508 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1509 1510 XYC_GO(xycsc->xyc, addr); 1511 1512 del = XYC_RESETUSEC; 1513 while (del > 0) { 1514 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) break; 1515 DELAY(1); 1516 del--; 1517 } 1518 1519 if (del <= 0 || xycsc->ciopb->errs) { 1520 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1521 xyc_e2str(xycsc->ciopb->errno)); 1522 del = xycsc->xyc->xyc_rsetup; 1523 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1524 panic("xyc_reset"); 1525 } else { 1526 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1527 } 1528 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1529 } 1530 1531 1532 /* 1533 * xyc_reset: reset everything: requests are marked as errors except 1534 * a polled request (which is resubmitted) 1535 */ 1536 int 1537 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1538 int error, struct xy_softc *xysc) 1539 { 1540 int del = 0, lcv, retval = XY_ERR_AOK; 1541 struct xy_iorq *iorq; 1542 1543 /* soft reset hardware */ 1544 1545 if (!quiet) 1546 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1547 del = xycsc->xyc->xyc_rsetup; 1548 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1549 if (del == XY_ERR_FAIL) { 1550 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1551 retval = XY_ERR_FAIL; 1552 } 1553 if (xysc) 1554 xyc_xyreset(xycsc, xysc); 1555 1556 /* fix queues based on "blast-mode" */ 1557 1558 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1559 iorq = &xycsc->reqs[lcv]; 1560 1561 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1562 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1563 XY_STATE(iorq->mode) != XY_SUB_NORM) 1564 /* is it active? */ 1565 continue; 1566 1567 if (blastmode == XY_RSET_ALL || 1568 blastmode != iorq) { 1569 /* failed */ 1570 iorq->errno = error; 1571 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1572 switch (XY_STATE(iorq->mode)) { 1573 case XY_SUB_NORM: 1574 iorq->buf->b_error = EIO; 1575 iorq->buf->b_flags |= B_ERROR; 1576 iorq->buf->b_resid = 1577 iorq->sectcnt * XYFM_BPS; 1578 /* Sun3: map/unmap regardless of B_PHYS */ 1579 dvma_mapout(iorq->dbufbase, 1580 iorq->buf->b_bcount); 1581 (void)BUFQ_GET(iorq->xy->xyq); 1582 disk_unbusy(&iorq->xy->sc_dk, 1583 (iorq->buf->b_bcount - iorq->buf->b_resid), 1584 (iorq->buf->b_flags & B_READ)); 1585 biodone(iorq->buf); 1586 iorq->mode = XY_SUB_FREE; 1587 break; 1588 case XY_SUB_WAIT: 1589 wakeup(iorq); 1590 case XY_SUB_POLL: 1591 iorq->mode = 1592 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1593 break; 1594 } 1595 1596 } else { 1597 1598 /* resubmit, no need to do anything here */ 1599 } 1600 } 1601 1602 /* 1603 * now, if stuff is waiting, start it. 1604 * since we just reset it should go 1605 */ 1606 xyc_start(xycsc, NULL); 1607 1608 return (retval); 1609 } 1610 1611 /* 1612 * xyc_start: start waiting buffers 1613 */ 1614 1615 void 1616 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1617 { 1618 int lcv; 1619 struct xy_softc *xy; 1620 1621 if (iorq == NULL) { 1622 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1623 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1624 if (BUFQ_PEEK(xy->xyq) == NULL) continue; 1625 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1626 xyc_startbuf(xycsc, xy, BUFQ_PEEK(xy->xyq)); 1627 } 1628 } 1629 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1630 } 1631 1632 /* 1633 * xyc_remove_iorq: remove "done" IOPB's. 1634 */ 1635 1636 int 1637 xyc_remove_iorq(struct xyc_softc *xycsc) 1638 { 1639 int errno, rq, comm, errs; 1640 struct xyc *xyc = xycsc->xyc; 1641 u_long addr; 1642 struct xy_iopb *iopb; 1643 struct xy_iorq *iorq; 1644 struct buf *bp; 1645 1646 if (xyc->xyc_csr & XYC_DERR) { 1647 /* 1648 * DOUBLE ERROR: should never happen under normal use. This 1649 * error is so bad, you can't even tell which IOPB is bad, so 1650 * we dump them all. 1651 */ 1652 errno = XY_ERR_DERR; 1653 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1654 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1655 printf("%s: soft reset failed!\n", 1656 xycsc->sc_dev.dv_xname); 1657 panic("xyc_remove_iorq: controller DEAD"); 1658 } 1659 return (XY_ERR_AOK); 1660 } 1661 1662 /* 1663 * get iopb that is done, loop down the chain 1664 */ 1665 1666 if (xyc->xyc_csr & XYC_ERR) { 1667 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1668 } 1669 if (xyc->xyc_csr & XYC_IPND) { 1670 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1671 } 1672 1673 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1674 iorq = xycsc->xy_chain[rq]; 1675 if (iorq == NULL) break; /* done ! */ 1676 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1677 continue; /* free, or done */ 1678 iopb = iorq->iopb; 1679 if (iopb->done == 0) 1680 continue; /* not done yet */ 1681 1682 comm = iopb->com; 1683 errs = iopb->errs; 1684 1685 if (errs) 1686 iorq->errno = iopb->errno; 1687 else 1688 iorq->errno = 0; 1689 1690 /* handle non-fatal errors */ 1691 1692 if (errs && 1693 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1694 continue; /* AOK: we resubmitted it */ 1695 1696 1697 /* this iorq is now done (hasn't been restarted or anything) */ 1698 1699 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1700 xyc_perror(iorq, iopb, 0); 1701 1702 /* now, if read/write check to make sure we got all the data 1703 * we needed. (this may not be the case if we got an error in 1704 * the middle of a multisector request). */ 1705 1706 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1707 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1708 /* we just successfully processed a bad144 sector 1709 * note: if we are in bad 144 mode, the pointers have 1710 * been advanced already (see above) and are pointing 1711 * at the bad144 sector. to exit bad144 mode, we 1712 * must advance the pointers 1 sector and issue a new 1713 * request if there are still sectors left to process 1714 * 1715 */ 1716 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1717 1718 /* exit b144 mode */ 1719 iorq->mode = iorq->mode & (~XY_MODE_B144); 1720 1721 if (iorq->sectcnt) { /* more to go! */ 1722 iorq->lasterror = iorq->errno = iopb->errno = 0; 1723 iopb->errs = iopb->done = 0; 1724 iorq->tries = 0; 1725 iopb->scnt = iorq->sectcnt; 1726 iopb->cyl = iorq->blockno / 1727 iorq->xy->sectpercyl; 1728 iopb->head = 1729 (iorq->blockno / iorq->xy->nhead) % 1730 iorq->xy->nhead; 1731 iopb->sect = iorq->blockno % XYFM_BPS; 1732 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1733 iopb->dataa = (addr & 0xffff); 1734 iopb->datar = ((addr & 0xff0000) >> 16); 1735 /* will resubit at end */ 1736 continue; 1737 } 1738 } 1739 /* final cleanup, totally done with this request */ 1740 1741 switch (XY_STATE(iorq->mode)) { 1742 case XY_SUB_NORM: 1743 bp = iorq->buf; 1744 if (errs) { 1745 bp->b_error = EIO; 1746 bp->b_flags |= B_ERROR; 1747 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1748 } else { 1749 bp->b_resid = 0; /* done */ 1750 } 1751 /* Sun3: map/unmap regardless of B_PHYS */ 1752 dvma_mapout(iorq->dbufbase, 1753 iorq->buf->b_bcount); 1754 (void)BUFQ_GET(iorq->xy->xyq); 1755 disk_unbusy(&iorq->xy->sc_dk, 1756 (bp->b_bcount - bp->b_resid), 1757 (bp->b_flags & B_READ)); 1758 iorq->mode = XY_SUB_FREE; 1759 biodone(bp); 1760 break; 1761 case XY_SUB_WAIT: 1762 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1763 wakeup(iorq); 1764 break; 1765 case XY_SUB_POLL: 1766 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1767 break; 1768 } 1769 } 1770 1771 return (XY_ERR_AOK); 1772 } 1773 1774 /* 1775 * xyc_perror: print error. 1776 * - if still_trying is true: we got an error, retried and got a 1777 * different error. in that case lasterror is the old error, 1778 * and errno is the new one. 1779 * - if still_trying is not true, then if we ever had an error it 1780 * is in lasterror. also, if iorq->errno == 0, then we recovered 1781 * from that error (otherwise iorq->errno == iorq->lasterror). 1782 */ 1783 void 1784 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1785 { 1786 1787 int error = iorq->lasterror; 1788 1789 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 1790 : iorq->xyc->sc_dev.dv_xname); 1791 if (iorq->buf) 1792 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 1793 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1794 printf("%s %d/%d/%d: ", 1795 (iopb->com == XYCMD_RD) ? "read" : "write", 1796 iopb->cyl, iopb->head, iopb->sect); 1797 printf("%s", xyc_e2str(error)); 1798 1799 if (still_trying) 1800 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1801 else 1802 if (iorq->errno == 0) 1803 printf(" [recovered in %d tries]", iorq->tries); 1804 1805 printf("\n"); 1806 } 1807 1808 /* 1809 * xyc_error: non-fatal error encountered... recover. 1810 * return AOK if resubmitted, return FAIL if this iopb is done 1811 */ 1812 int 1813 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 1814 int comm) 1815 { 1816 int errno = iorq->errno; 1817 int erract = xyc_entoact(errno); 1818 int oldmode, advance, i; 1819 1820 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1821 oldmode = iorq->mode; 1822 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1823 /* make xyc_start ignore us */ 1824 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1825 iorq->mode = oldmode; 1826 } 1827 /* check for read/write to a sector in bad144 table if bad: redirect 1828 * request to bad144 area */ 1829 1830 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1831 (iorq->mode & XY_MODE_B144) == 0) { 1832 advance = iorq->sectcnt - iopb->scnt; 1833 XYC_ADVANCE(iorq, advance); 1834 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 1835 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1836 iorq->blockno % iorq->xy->nsect)) != -1) { 1837 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1838 * redirect */ 1839 iopb->errno = iopb->done = iopb->errs = 0; 1840 iopb->scnt = 1; 1841 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1842 /* second to last acyl */ 1843 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1844 * standard */ 1845 iopb->head = i / iorq->xy->nhead; 1846 iopb->sect = i % iorq->xy->nhead; 1847 /* will resubmit when we come out of remove_iorq */ 1848 return (XY_ERR_AOK); /* recovered! */ 1849 } 1850 } 1851 1852 /* 1853 * it isn't a bad144 sector, must be real error! see if we can retry 1854 * it? 1855 */ 1856 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1857 xyc_perror(iorq, iopb, 1); /* inform of error state 1858 * change */ 1859 iorq->lasterror = errno; 1860 1861 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1862 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1863 iorq->tries++; 1864 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1865 /* will resubmit at end of remove_iorq */ 1866 return (XY_ERR_AOK); /* recovered! */ 1867 } 1868 1869 /* failed to recover from this error */ 1870 return (XY_ERR_FAIL); 1871 } 1872 1873 /* 1874 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1875 */ 1876 void 1877 xyc_tick(void *arg) 1878 { 1879 struct xyc_softc *xycsc = arg; 1880 int lcv, s, reset = 0; 1881 1882 /* reduce ttl for each request if one goes to zero, reset xyc */ 1883 s = splbio(); 1884 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1885 if (xycsc->reqs[lcv].mode == 0 || 1886 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1887 continue; 1888 xycsc->reqs[lcv].ttl--; 1889 if (xycsc->reqs[lcv].ttl == 0) 1890 reset = 1; 1891 } 1892 if (reset) { 1893 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 1894 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1895 } 1896 splx(s); 1897 1898 /* until next time */ 1899 1900 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1901 } 1902 1903 /* 1904 * xyc_ioctlcmd: this function provides a user level interface to the 1905 * controller via ioctl. this allows "format" programs to be written 1906 * in user code, and is also useful for some debugging. we return 1907 * an error code. called at user priority. 1908 * 1909 * XXX missing a few commands (see the 7053 driver for ideas) 1910 */ 1911 int 1912 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 1913 { 1914 int s, err, rqno; 1915 void * dvmabuf = NULL; 1916 struct xyc_softc *xycsc; 1917 1918 /* check sanity of requested command */ 1919 1920 switch (xio->cmd) { 1921 1922 case XYCMD_NOP: /* no op: everything should be zero */ 1923 if (xio->subfn || xio->dptr || xio->dlen || 1924 xio->block || xio->sectcnt) 1925 return (EINVAL); 1926 break; 1927 1928 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1929 case XYCMD_WR: 1930 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1931 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1932 return (EINVAL); 1933 break; 1934 1935 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1936 return (EINVAL); 1937 1938 break; 1939 1940 default: 1941 return (EINVAL);/* ??? */ 1942 } 1943 1944 /* create DVMA buffer for request if needed */ 1945 1946 if (xio->dlen) { 1947 dvmabuf = dvma_malloc(xio->dlen); 1948 if (xio->cmd == XYCMD_WR) { 1949 err = copyin(xio->dptr, dvmabuf, xio->dlen); 1950 if (err) { 1951 dvma_free(dvmabuf, xio->dlen); 1952 return (err); 1953 } 1954 } 1955 } 1956 /* do it! */ 1957 1958 err = 0; 1959 xycsc = xy->parent; 1960 s = splbio(); 1961 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 1962 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 1963 if (rqno == XY_ERR_FAIL) { 1964 err = EIO; 1965 goto done; 1966 } 1967 xio->errno = xycsc->ciorq->errno; 1968 xio->tries = xycsc->ciorq->tries; 1969 XYC_DONE(xycsc, err); 1970 1971 if (xio->cmd == XYCMD_RD) 1972 err = copyout(dvmabuf, xio->dptr, xio->dlen); 1973 1974 done: 1975 splx(s); 1976 if (dvmabuf) 1977 dvma_free(dvmabuf, xio->dlen); 1978 return (err); 1979 } 1980 1981 /* 1982 * xyc_e2str: convert error code number into an error string 1983 */ 1984 const char * 1985 xyc_e2str(int no) 1986 { 1987 switch (no) { 1988 case XY_ERR_FAIL: 1989 return ("Software fatal error"); 1990 case XY_ERR_DERR: 1991 return ("DOUBLE ERROR"); 1992 case XY_ERR_AOK: 1993 return ("Successful completion"); 1994 case XY_ERR_IPEN: 1995 return("Interrupt pending"); 1996 case XY_ERR_BCFL: 1997 return("Busy conflict"); 1998 case XY_ERR_TIMO: 1999 return("Operation timeout"); 2000 case XY_ERR_NHDR: 2001 return("Header not found"); 2002 case XY_ERR_HARD: 2003 return("Hard ECC error"); 2004 case XY_ERR_ICYL: 2005 return("Illegal cylinder address"); 2006 case XY_ERR_ISEC: 2007 return("Illegal sector address"); 2008 case XY_ERR_SMAL: 2009 return("Last sector too small"); 2010 case XY_ERR_SACK: 2011 return("Slave ACK error (non-existent memory)"); 2012 case XY_ERR_CHER: 2013 return("Cylinder and head/header error"); 2014 case XY_ERR_SRTR: 2015 return("Auto-seek retry successful"); 2016 case XY_ERR_WPRO: 2017 return("Write-protect error"); 2018 case XY_ERR_UIMP: 2019 return("Unimplemented command"); 2020 case XY_ERR_DNRY: 2021 return("Drive not ready"); 2022 case XY_ERR_SZER: 2023 return("Sector count zero"); 2024 case XY_ERR_DFLT: 2025 return("Drive faulted"); 2026 case XY_ERR_ISSZ: 2027 return("Illegal sector size"); 2028 case XY_ERR_SLTA: 2029 return("Self test A"); 2030 case XY_ERR_SLTB: 2031 return("Self test B"); 2032 case XY_ERR_SLTC: 2033 return("Self test C"); 2034 case XY_ERR_SOFT: 2035 return("Soft ECC error"); 2036 case XY_ERR_SFOK: 2037 return("Soft ECC error recovered"); 2038 case XY_ERR_IHED: 2039 return("Illegal head"); 2040 case XY_ERR_DSEQ: 2041 return("Disk sequencer error"); 2042 case XY_ERR_SEEK: 2043 return("Seek error"); 2044 default: 2045 return ("Unknown error"); 2046 } 2047 } 2048 2049 int 2050 xyc_entoact(int errno) 2051 { 2052 switch (errno) { 2053 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2054 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2055 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2056 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2057 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2058 2059 return(XY_ERA_PROG); /* program error ! */ 2060 2061 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2062 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2063 case XY_ERR_SOFT: 2064 2065 return(XY_ERA_HARD); /* hard error, retry */ 2066 2067 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2068 2069 return(XY_ERA_RSET); /* hard error reset */ 2070 2071 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2072 2073 return(XY_ERA_SOFT); /* an FYI error */ 2074 2075 case XY_ERR_WPRO: 2076 2077 return(XY_ERA_WPRO); /* write protect */ 2078 } 2079 2080 return(XY_ERA_PROG); /* ??? */ 2081 } 2082
Indexes created Mon Sep 29 21:09:56 GMT 2025