xy.c revision 1.76
1 /* $NetBSD: xy.c,v 1.76 2014/07/25 08:10:35 dholland Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Charles D. Cranor 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * 30 * 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 31 * 32 * author: Chuck Cranor <chuck@netbsd> 33 * id: &Id: xy.c,v 1.1 1995/09/25 20:35:14 chuck Exp & 34 * started: 14-Sep-95 35 * references: [1] Xylogics Model 753 User's Manual 36 * part number: 166-753-001, Revision B, May 21, 1988. 37 * "Your Partner For Performance" 38 * [2] other NetBSD disk device drivers 39 * [3] Xylogics Model 450 User's Manual 40 * part number: 166-017-001, Revision B, 1983. 41 * [4] Addendum to Xylogics Model 450 Disk Controller User's 42 * Manual, Jan. 1985. 43 * [5] The 451 Controller, Rev. B3, September 2, 1986. 44 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 45 * 46 */ 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.76 2014/07/25 08:10:35 dholland Exp $"); 50 51 #undef XYC_DEBUG /* full debug */ 52 #undef XYC_DIAG /* extra sanity checks */ 53 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 54 #define XYC_DIAG /* link in with master DIAG option */ 55 #endif 56 57 #include <sys/param.h> 58 #include <sys/proc.h> 59 #include <sys/systm.h> 60 #include <sys/kernel.h> 61 #include <sys/file.h> 62 #include <sys/stat.h> 63 #include <sys/ioctl.h> 64 #include <sys/buf.h> 65 #include <sys/bufq.h> 66 #include <sys/uio.h> 67 #include <sys/malloc.h> 68 #include <sys/device.h> 69 #include <sys/disklabel.h> 70 #include <sys/disk.h> 71 #include <sys/syslog.h> 72 #include <sys/dkbad.h> 73 #include <sys/conf.h> 74 #include <sys/kauth.h> 75 76 #include <uvm/uvm_extern.h> 77 78 #include <dev/sun/disklabel.h> 79 80 #include <machine/autoconf.h> 81 #include <machine/dvma.h> 82 83 #include <sun3/dev/xyreg.h> 84 #include <sun3/dev/xyvar.h> 85 #include <sun3/dev/xio.h> 86 87 #include "ioconf.h" 88 #include "locators.h" 89 90 /* 91 * Print a complaint when no xy children were specified 92 * in the config file. Better than a link error... 93 * 94 * XXX: Some folks say this driver should be split in two, 95 * but that seems pointless with ONLY one type of child. 96 */ 97 #include "xy.h" 98 #if NXY == 0 99 #error "xyc but no xy?" 100 #endif 101 102 /* 103 * macros 104 */ 105 106 /* 107 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 108 */ 109 #define XYC_GO(XYC, ADDR) \ 110 do { \ 111 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 112 (ADDR) = ((ADDR) >> 8); \ 113 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 114 (ADDR) = ((ADDR) >> 8); \ 115 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 116 (ADDR) = ((ADDR) >> 8); \ 117 (XYC)->xyc_reloc_hi = (ADDR); \ 118 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 119 } while (/* CONSTCOND */ 0) 120 121 /* 122 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 123 */ 124 125 #define XYC_DONE(SC,ER) \ 126 do { \ 127 if ((ER) == XY_ERR_AOK) { \ 128 (ER) = (SC)->ciorq->errno; \ 129 (SC)->ciorq->mode = XY_SUB_FREE; \ 130 wakeup((SC)->ciorq); \ 131 } \ 132 } while (/* CONSTCOND */ 0) 133 134 /* 135 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 136 */ 137 138 #define XYC_ADVANCE(IORQ, N) \ 139 do { \ 140 if (N) { \ 141 (IORQ)->sectcnt -= (N); \ 142 (IORQ)->blockno += (N); \ 143 (IORQ)->dbuf += ((N) * XYFM_BPS); \ 144 } \ 145 } while (/* CONSTCOND */ 0) 146 147 /* 148 * note - addresses you can sleep on: 149 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 150 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 151 */ 152 153 154 /* 155 * function prototypes 156 * "xyc_*" functions are internal, all others are external interfaces 157 */ 158 159 /* internals */ 160 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 161 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 162 const char *xyc_e2str(int); 163 int xyc_entoact(int); 164 int xyc_error(struct xyc_softc *, struct xy_iorq *, struct xy_iopb *, int); 165 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 166 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 167 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 168 int xyc_remove_iorq(struct xyc_softc *); 169 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 170 struct xy_softc *); 171 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, struct xy_softc *, 172 int, u_long, int, void *, struct buf *); 173 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 174 void xyc_start(struct xyc_softc *, struct xy_iorq *); 175 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 176 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 177 void xyc_tick(void *); 178 int xyc_unbusy(struct xyc *, int); 179 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 180 181 /* machine interrupt hook */ 182 int xycintr(void *); 183 184 /* autoconf */ 185 static int xycmatch(device_t, cfdata_t, void *); 186 static void xycattach(device_t, device_t, void *); 187 static int xyc_print(void *, const char *); 188 189 static int xymatch(device_t, cfdata_t, void *); 190 static void xyattach(device_t, device_t, void *); 191 static void xy_init(struct xy_softc *); 192 193 static void xydummystrat(struct buf *); 194 int xygetdisklabel(struct xy_softc *, void *); 195 196 /* 197 * cfattach's: device driver interface to autoconfig 198 */ 199 200 CFATTACH_DECL_NEW(xyc, sizeof(struct xyc_softc), 201 xycmatch, xycattach, NULL, NULL); 202 203 CFATTACH_DECL_NEW(xy, sizeof(struct xy_softc), 204 xymatch, xyattach, NULL, NULL); 205 206 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 207 int driveno; /* unit number */ 208 }; 209 210 dev_type_open(xyopen); 211 dev_type_close(xyclose); 212 dev_type_read(xyread); 213 dev_type_write(xywrite); 214 dev_type_ioctl(xyioctl); 215 dev_type_strategy(xystrategy); 216 dev_type_dump(xydump); 217 dev_type_size(xysize); 218 219 const struct bdevsw xy_bdevsw = { 220 .d_open = xyopen, 221 .d_close = xyclose, 222 .d_strategy = xystrategy, 223 .d_ioctl = xyioctl, 224 .d_dump = xydump, 225 .d_psize = xysize, 226 .d_discard = nodiscard, 227 .d_flag = D_DISK 228 }; 229 230 const struct cdevsw xy_cdevsw = { 231 .d_open = xyopen, 232 .d_close = xyclose, 233 .d_read = xyread, 234 .d_write = xywrite, 235 .d_ioctl = xyioctl, 236 .d_stop = nostop, 237 .d_tty = notty, 238 .d_poll = nopoll, 239 .d_mmap = nommap, 240 .d_kqfilter = nokqfilter, 241 .d_discard = nodiscard, 242 .d_flag = D_DISK 243 }; 244 245 /* 246 * dkdriver 247 */ 248 249 struct dkdriver xydkdriver = { xystrategy }; 250 251 /* 252 * start: disk label fix code (XXX) 253 */ 254 255 static void *xy_labeldata; 256 257 static void 258 xydummystrat(struct buf *bp) 259 { 260 261 if (bp->b_bcount != XYFM_BPS) 262 panic("%s: b_bcount", __func__); 263 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 264 bp->b_oflags |= BO_DONE; 265 bp->b_cflags &= ~BC_BUSY; 266 } 267 268 int 269 xygetdisklabel(struct xy_softc *xy, void *b) 270 { 271 const char *err; 272 struct sun_disklabel *sdl; 273 274 /* We already have the label data in `b'; setup for dummy strategy */ 275 xy_labeldata = b; 276 277 /* Required parameter for readdisklabel() */ 278 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 279 280 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 281 xydummystrat, xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 282 if (err) { 283 printf("%s: %s\n", device_xname(xy->sc_dev), err); 284 return XY_ERR_FAIL; 285 } 286 287 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 288 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 289 if (sdl->sl_magic == SUN_DKMAGIC) 290 xy->pcyl = sdl->sl_pcyl; 291 else { 292 printf("%s: WARNING: no `pcyl' in disk label.\n", 293 device_xname(xy->sc_dev)); 294 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 295 xy->sc_dk.dk_label->d_acylinders; 296 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 297 device_xname(xy->sc_dev), xy->pcyl); 298 } 299 300 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 301 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 302 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 303 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 304 xy->sectpercyl = xy->nhead * xy->nsect; 305 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 306 * sun->bsd */ 307 return XY_ERR_AOK; 308 } 309 310 /* 311 * end: disk label fix code (XXX) 312 */ 313 314 /* 315 * a u t o c o n f i g f u n c t i o n s 316 */ 317 318 /* 319 * xycmatch: determine if xyc is present or not. we do a 320 * soft reset to detect the xyc. 321 */ 322 static int 323 xycmatch(device_t parent, cfdata_t cf, void *aux) 324 { 325 struct confargs *ca = aux; 326 327 /* No default VME address. */ 328 if (ca->ca_paddr == -1) 329 return 0; 330 331 /* Make sure something is there... */ 332 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 333 return 0; 334 335 /* Default interrupt priority. */ 336 if (ca->ca_intpri == -1) 337 ca->ca_intpri = 2; 338 339 return 1; 340 } 341 342 /* 343 * xycattach: attach controller 344 */ 345 static void 346 xycattach(device_t parent, device_t self, void *aux) 347 { 348 struct xyc_softc *xyc = device_private(self); 349 struct confargs *ca = aux; 350 struct xyc_attach_args xa; 351 int lcv, err, res, pbsz; 352 void *tmp, *tmp2; 353 u_long ultmp; 354 355 /* get addressing and intr level stuff from autoconfig and load it 356 * into our xyc_softc. */ 357 358 xyc->sc_dev = self; 359 xyc->xyc = (struct xyc *)bus_mapin(ca->ca_bustype, ca->ca_paddr, 360 sizeof(struct xyc)); 361 xyc->bustype = ca->ca_bustype; 362 xyc->ipl = ca->ca_intpri; 363 xyc->vector = ca->ca_intvec; 364 xyc->no_ols = 0; /* XXX should be from config */ 365 366 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 367 xyc->sc_drives[lcv] = NULL; 368 369 /* 370 * allocate and zero buffers 371 * check boundaries of the KVA's ... all IOPBs must reside in 372 * the same 64K region. 373 */ 374 375 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 376 tmp = tmp2 = (struct xy_iopb *)dvma_malloc(pbsz); /* KVA */ 377 ultmp = (u_long)tmp; 378 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 379 tmp = (struct xy_iopb *)dvma_malloc(pbsz); /* retry! */ 380 dvma_free(tmp2, pbsz); 381 ultmp = (u_long) tmp; 382 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 383 aprint_error(": can't alloc IOPB mem in 64K\n"); 384 return; 385 } 386 } 387 memset(tmp, 0, pbsz); 388 xyc->iopbase = tmp; 389 xyc->dvmaiopb = 390 (struct xy_iopb *)dvma_kvtopa(xyc->iopbase, xyc->bustype); 391 xyc->reqs = malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 392 M_DEVBUF, M_NOWAIT | M_ZERO); 393 if (xyc->reqs == NULL) 394 panic("xyc malloc"); 395 396 /* 397 * init iorq to iopb pointers, and non-zero fields in the 398 * iopb which never change. 399 */ 400 401 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 402 xyc->xy_chain[lcv] = NULL; 403 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 404 xyc->iopbase[lcv].asr = 1; /* always the same */ 405 xyc->iopbase[lcv].eef = 1; /* always the same */ 406 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 407 xyc->iopbase[lcv].aud = 1; /* always the same */ 408 xyc->iopbase[lcv].relo = 1; /* always the same */ 409 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 410 } 411 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 412 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 413 xyc->xy_hand = 0; 414 415 /* read controller parameters and insure we have a 450/451 */ 416 417 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 418 res = xyc->ciopb->ctyp; 419 XYC_DONE(xyc, err); 420 if (res != XYCT_450) { 421 if (err) 422 aprint_error(": %s: ", xyc_e2str(err)); 423 aprint_error(": doesn't identify as a 450/451\n"); 424 return; 425 } 426 aprint_normal(": Xylogics 450/451"); 427 if (xyc->no_ols) 428 /* 450 doesn't overlap seek right */ 429 aprint_normal(" [OLS disabled]"); 430 aprint_normal("\n"); 431 if (err) { 432 aprint_error_dev(self, "error: %s\n", xyc_e2str(err)); 433 return; 434 } 435 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 436 aprint_error_dev(self, "24 bit addressing turned off\n"); 437 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 438 printf("to enable 24 bit mode and this driver\n"); 439 return; 440 } 441 442 /* link in interrupt with higher level software */ 443 isr_add_vectored(xycintr, xyc, ca->ca_intpri, ca->ca_intvec); 444 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 445 device_xname(self), "intr"); 446 447 callout_init(&xyc->sc_tick_ch, 0); 448 449 /* now we must look for disks using autoconfig */ 450 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 451 (void)config_found(self, (void *)&xa, xyc_print); 452 453 /* start the watchdog clock */ 454 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 455 } 456 457 static int 458 xyc_print(void *aux, const char *name) 459 { 460 struct xyc_attach_args *xa = aux; 461 462 if (name != NULL) 463 aprint_normal("%s: ", name); 464 465 if (xa->driveno != -1) 466 aprint_normal(" drive %d", xa->driveno); 467 468 return UNCONF; 469 } 470 471 /* 472 * xymatch: probe for disk. 473 * 474 * note: we almost always say disk is present. this allows us to 475 * spin up and configure a disk after the system is booted (we can 476 * call xyattach!). Also, wire down the relationship between the 477 * xy* and xyc* devices, to simplify boot device identification. 478 */ 479 static int 480 xymatch(device_t parent, cfdata_t cf, void *aux) 481 { 482 struct xyc_attach_args *xa = aux; 483 int xy_unit; 484 485 /* Match only on the "wired-down" controller+disk. */ 486 xy_unit = device_unit(parent) * 2 + xa->driveno; 487 if (cf->cf_unit != xy_unit) 488 return 0; 489 490 return 1; 491 } 492 493 /* 494 * xyattach: attach a disk. 495 */ 496 static void 497 xyattach(device_t parent, device_t self, void *aux) 498 { 499 struct xy_softc *xy = device_private(self); 500 struct xyc_softc *xyc = device_private(parent); 501 struct xyc_attach_args *xa = aux; 502 503 xy->sc_dev = self; 504 aprint_normal("\n"); 505 506 /* 507 * Always re-initialize the disk structure. We want statistics 508 * to start with a clean slate. 509 */ 510 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 511 disk_init(&xy->sc_dk, device_xname(self), &xydkdriver); 512 513 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 514 xy->flags = 0; 515 xy->parent = xyc; 516 517 /* init queue of waiting bufs */ 518 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 519 xy->xyrq = &xyc->reqs[xa->driveno]; 520 521 xy->xy_drive = xa->driveno; 522 xyc->sc_drives[xa->driveno] = xy; 523 524 /* Do init work common to attach and open. */ 525 xy_init(xy); 526 } 527 528 /* 529 * end of autoconfig functions 530 */ 531 532 /* 533 * Initialize a disk. This can be called from both autoconf and 534 * also from xyopen/xystrategy. 535 */ 536 static void 537 xy_init(struct xy_softc *xy) 538 { 539 struct xyc_softc *xyc; 540 struct dkbad *dkb; 541 void *dvmabuf; 542 int err, spt, mb, blk, lcv, fullmode, newstate; 543 544 xyc = xy->parent; 545 xy->state = XY_DRIVE_ATTACHING; 546 newstate = XY_DRIVE_UNKNOWN; 547 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 548 dvmabuf = dvma_malloc(XYFM_BPS); 549 550 /* first try and reset the drive */ 551 552 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 553 XYC_DONE(xyc, err); 554 if (err == XY_ERR_DNRY) { 555 printf("%s: drive %d: off-line\n", 556 device_xname(xy->sc_dev), xy->xy_drive); 557 goto done; 558 } 559 if (err) { 560 printf("%s: ERROR 0x%02x (%s)\n", 561 device_xname(xy->sc_dev), err, xyc_e2str(err)); 562 goto done; 563 } 564 printf("%s: drive %d ready", 565 device_xname(xy->sc_dev), xy->xy_drive); 566 567 /* 568 * now set drive parameters (to semi-bogus values) so we can read the 569 * disk label. 570 */ 571 xy->pcyl = xy->ncyl = 1; 572 xy->acyl = 0; 573 xy->nhead = 1; 574 xy->nsect = 1; 575 xy->sectpercyl = 1; 576 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 577 xy->dkb.bt_bad[lcv].bt_cyl = 578 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 579 580 /* read disk label */ 581 for (xy->drive_type = 0; xy->drive_type <= XYC_MAXDT; 582 xy->drive_type++) { 583 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 584 dvmabuf, fullmode); 585 XYC_DONE(xyc, err); 586 if (err == XY_ERR_AOK) 587 break; 588 } 589 590 if (err != XY_ERR_AOK) { 591 printf("%s: reading disk label failed: %s\n", 592 device_xname(xy->sc_dev), xyc_e2str(err)); 593 goto done; 594 } 595 printf("%s: drive type %d\n", 596 device_xname(xy->sc_dev), xy->drive_type); 597 598 newstate = XY_DRIVE_NOLABEL; 599 600 xy->hw_spt = spt = 0; /* XXX needed ? */ 601 /* Attach the disk: must be before getdisklabel to malloc label */ 602 disk_attach(&xy->sc_dk); 603 604 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 605 goto done; 606 607 /* inform the user of what is up */ 608 printf("%s: <%s>, pcyl %d\n", 609 device_xname(xy->sc_dev), 610 (char *)dvmabuf, xy->pcyl); 611 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 612 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 613 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect); 614 615 /* 616 * 450/451 stupidity: the drive type is encoded into the format 617 * of the disk. the drive type in the IOPB must match the drive 618 * type in the format, or you will not be able to do I/O to the 619 * disk (you get header not found errors). if you have two drives 620 * of different sizes that have the same drive type in their 621 * formatting then you are out of luck. 622 * 623 * this problem was corrected in the 753/7053. 624 */ 625 626 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 627 struct xy_softc *oxy; 628 629 oxy = xyc->sc_drives[lcv]; 630 if (oxy == NULL || oxy == xy) 631 continue; 632 if (oxy->drive_type != xy->drive_type) 633 continue; 634 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 635 xy->nhead != oxy->nhead) { 636 printf("%s: %s and %s must be the same size!\n", 637 device_xname(xyc->sc_dev), 638 device_xname(xy->sc_dev), 639 device_xname(oxy->sc_dev)); 640 panic("xy drive size mismatch"); 641 } 642 } 643 644 645 /* now set the real drive parameters! */ 646 blk = (xy->nsect - 1) + 647 ((xy->nhead - 1) * xy->nsect) + 648 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 649 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 650 XYC_DONE(xyc, err); 651 if (err) { 652 printf("%s: write drive size failed: %s\n", 653 device_xname(xy->sc_dev), xyc_e2str(err)); 654 goto done; 655 } 656 newstate = XY_DRIVE_ONLINE; 657 658 /* 659 * read bad144 table. this table resides on the first sector of the 660 * last track of the disk (i.e. second cyl of "acyl" area). 661 */ 662 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 663 /* last cyl */ 664 (xy->nhead - 1) * xy->nsect; /* last head */ 665 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 666 dvmabuf, fullmode); 667 XYC_DONE(xyc, err); 668 if (err) { 669 printf("%s: reading bad144 failed: %s\n", 670 device_xname(xy->sc_dev), xyc_e2str(err)); 671 goto done; 672 } 673 674 /* check dkbad for sanity */ 675 dkb = (struct dkbad *)dvmabuf; 676 for (lcv = 0; lcv < 126; lcv++) { 677 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 678 dkb->bt_bad[lcv].bt_cyl == 0) && 679 dkb->bt_bad[lcv].bt_trksec == 0xffff) 680 continue; /* blank */ 681 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 682 break; 683 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 684 break; 685 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 686 break; 687 } 688 if (lcv != 126) { 689 printf("%s: warning: invalid bad144 sector!\n", 690 device_xname(xy->sc_dev)); 691 } else { 692 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 693 } 694 695 done: 696 xy->state = newstate; 697 dvma_free(dvmabuf, XYFM_BPS); 698 } 699 700 /* 701 * { b , c } d e v s w f u n c t i o n s 702 */ 703 704 /* 705 * xyclose: close device 706 */ 707 int 708 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 709 { 710 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 711 int part = DISKPART(dev); 712 713 /* clear mask bits */ 714 715 switch (fmt) { 716 case S_IFCHR: 717 xy->sc_dk.dk_copenmask &= ~(1 << part); 718 break; 719 case S_IFBLK: 720 xy->sc_dk.dk_bopenmask &= ~(1 << part); 721 break; 722 } 723 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 724 725 return 0; 726 } 727 728 /* 729 * xydump: crash dump system 730 */ 731 int 732 xydump(dev_t dev, daddr_t blkno, void *va, size_t sz) 733 { 734 int unit, part; 735 struct xy_softc *xy; 736 737 unit = DISKUNIT(dev); 738 part = DISKPART(dev); 739 740 xy = device_lookup_private(&xy_cd, unit); 741 if (xy == NULL) 742 return ENXIO; 743 744 printf("%s%c: crash dump not supported (yet)\n", 745 device_xname(xy->sc_dev), 'a' + part); 746 747 return ENXIO; 748 749 /* outline: globals: "dumplo" == sector number of partition to start 750 * dump at (convert to physical sector with partition table) 751 * "dumpsize" == size of dump in clicks "physmem" == size of physical 752 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 753 * physmem) 754 * 755 * dump a copy of physical memory to the dump device starting at sector 756 * "dumplo" in the swap partition (make sure > 0). map in pages as 757 * we go. use polled I/O. 758 * 759 * XXX how to handle NON_CONTIG? 760 */ 761 } 762 763 static enum kauth_device_req 764 xy_getkauthreq(u_char cmd) 765 { 766 enum kauth_device_req req; 767 768 switch (cmd) { 769 case XYCMD_WR: 770 case XYCMD_WTH: 771 case XYCMD_WFM: 772 case XYCMD_WRH: 773 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 774 break; 775 776 case XYCMD_RD: 777 case XYCMD_RTH: 778 case XYCMD_RDH: 779 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 780 break; 781 782 case XYCMD_RDS: 783 case XYCMD_MBD: 784 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 785 break; 786 787 case XYCMD_RST: 788 case XYCMD_SDS: 789 case XYCMD_MBL: 790 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 791 break; 792 793 case XYCMD_NOP: 794 case XYCMD_SK: 795 case XYCMD_ST: 796 case XYCMD_R: 797 default: 798 req = 0; 799 break; 800 } 801 802 return req; 803 } 804 805 /* 806 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 807 */ 808 int 809 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 810 { 811 struct xy_softc *xy; 812 struct xd_iocmd *xio; 813 int error, s, unit; 814 815 unit = DISKUNIT(dev); 816 817 xy = device_lookup_private(&xy_cd, unit); 818 if (xy == NULL) 819 return ENXIO; 820 821 /* switch on ioctl type */ 822 823 switch (command) { 824 case DIOCSBAD: /* set bad144 info */ 825 if ((flag & FWRITE) == 0) 826 return EBADF; 827 s = splbio(); 828 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 829 splx(s); 830 return 0; 831 832 case DIOCGDINFO: /* get disk label */ 833 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 834 return 0; 835 836 case DIOCGPART: /* get partition info */ 837 ((struct partinfo *)addr)->disklab = xy->sc_dk.dk_label; 838 ((struct partinfo *)addr)->part = 839 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 840 return 0; 841 842 case DIOCSDINFO: /* set disk label */ 843 if ((flag & FWRITE) == 0) 844 return EBADF; 845 error = setdisklabel(xy->sc_dk.dk_label, 846 (struct disklabel *)addr, /* xy->sc_dk.dk_openmask : */ 0, 847 xy->sc_dk.dk_cpulabel); 848 if (error == 0) { 849 if (xy->state == XY_DRIVE_NOLABEL) 850 xy->state = XY_DRIVE_ONLINE; 851 } 852 return error; 853 854 case DIOCWLABEL: /* change write status of disk label */ 855 if ((flag & FWRITE) == 0) 856 return EBADF; 857 if (*(int *)addr) 858 xy->flags |= XY_WLABEL; 859 else 860 xy->flags &= ~XY_WLABEL; 861 return 0; 862 863 case DIOCWDINFO: /* write disk label */ 864 if ((flag & FWRITE) == 0) 865 return EBADF; 866 error = setdisklabel(xy->sc_dk.dk_label, 867 (struct disklabel *)addr, /* xy->sc_dk.dk_openmask : */ 0, 868 xy->sc_dk.dk_cpulabel); 869 if (error == 0) { 870 if (xy->state == XY_DRIVE_NOLABEL) 871 xy->state = XY_DRIVE_ONLINE; 872 873 /* Simulate opening partition 0 so write succeeds. */ 874 xy->sc_dk.dk_openmask |= (1 << 0); 875 error = writedisklabel(MAKEDISKDEV(major(dev), 876 DISKUNIT(dev), RAW_PART), 877 xystrategy, xy->sc_dk.dk_label, 878 xy->sc_dk.dk_cpulabel); 879 xy->sc_dk.dk_openmask = 880 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 881 } 882 return error; 883 884 case DIOSXDCMD: { 885 enum kauth_device_req req; 886 887 xio = (struct xd_iocmd *)addr; 888 req = xy_getkauthreq(xio->cmd); 889 if ((error = kauth_authorize_device_passthru(l->l_cred, 890 dev, req, xio)) != 0) 891 return error; 892 return xyc_ioctlcmd(xy, dev, xio); 893 } 894 895 default: 896 return ENOTTY; 897 } 898 } 899 900 /* 901 * xyopen: open drive 902 */ 903 int 904 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 905 { 906 int err, unit, part, s; 907 struct xy_softc *xy; 908 909 /* first, could it be a valid target? */ 910 unit = DISKUNIT(dev); 911 xy = device_lookup_private(&xy_cd, unit); 912 if (xy == NULL) 913 return ENXIO; 914 part = DISKPART(dev); 915 err = 0; 916 917 /* 918 * If some other processing is doing init, sleep. 919 */ 920 s = splbio(); 921 while (xy->state == XY_DRIVE_ATTACHING) { 922 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 923 err = EINTR; 924 goto done; 925 } 926 } 927 /* Do we need to init the drive? */ 928 if (xy->state == XY_DRIVE_UNKNOWN) { 929 xy_init(xy); 930 wakeup(&xy->state); 931 } 932 /* Was the init successful? */ 933 if (xy->state == XY_DRIVE_UNKNOWN) { 934 err = EIO; 935 goto done; 936 } 937 938 /* check for partition */ 939 if (part != RAW_PART && 940 (part >= xy->sc_dk.dk_label->d_npartitions || 941 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 942 err = ENXIO; 943 goto done; 944 } 945 946 /* set open masks */ 947 switch (fmt) { 948 case S_IFCHR: 949 xy->sc_dk.dk_copenmask |= (1 << part); 950 break; 951 case S_IFBLK: 952 xy->sc_dk.dk_bopenmask |= (1 << part); 953 break; 954 } 955 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 956 957 done: 958 splx(s); 959 return err; 960 } 961 962 int 963 xyread(dev_t dev, struct uio *uio, int flags) 964 { 965 966 return physio(xystrategy, NULL, dev, B_READ, minphys, uio); 967 } 968 969 int 970 xywrite(dev_t dev, struct uio *uio, int flags) 971 { 972 973 return physio(xystrategy, NULL, dev, B_WRITE, minphys, uio); 974 } 975 976 977 /* 978 * xysize: return size of a partition for a dump 979 */ 980 981 int 982 xysize(dev_t dev) 983 { 984 struct xy_softc *xysc; 985 int unit, part, size, omask; 986 987 /* valid unit? */ 988 unit = DISKUNIT(dev); 989 xysc = device_lookup_private(&xy_cd, unit); 990 if (xysc == NULL) 991 return -1; 992 993 part = DISKPART(dev); 994 omask = xysc->sc_dk.dk_openmask & (1 << part); 995 996 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 997 return -1; 998 999 /* do it */ 1000 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1001 size = -1; /* only give valid size for swap partitions */ 1002 else 1003 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1004 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1005 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1006 return -1; 1007 return size; 1008 } 1009 1010 /* 1011 * xystrategy: buffering system interface to xy. 1012 */ 1013 void 1014 xystrategy(struct buf *bp) 1015 { 1016 struct xy_softc *xy; 1017 int s, unit; 1018 struct disklabel *lp; 1019 daddr_t blkno; 1020 1021 unit = DISKUNIT(bp->b_dev); 1022 1023 /* check for live device */ 1024 1025 xy = device_lookup_private(&xy_cd, unit); 1026 if (xy == NULL || 1027 bp->b_blkno < 0 || 1028 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1029 bp->b_error = EINVAL; 1030 goto done; 1031 } 1032 1033 /* There should always be an open first. */ 1034 if (xy->state == XY_DRIVE_UNKNOWN) { 1035 bp->b_error = EIO; 1036 goto done; 1037 } 1038 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1039 /* no I/O to unlabeled disks, unless raw partition */ 1040 bp->b_error = EIO; 1041 goto done; 1042 } 1043 /* short circuit zero length request */ 1044 1045 if (bp->b_bcount == 0) 1046 goto done; 1047 1048 /* check bounds with label (disksubr.c). Determine the size of the 1049 * transfer, and make sure it is within the boundaries of the 1050 * partition. Adjust transfer if needed, and signal errors or early 1051 * completion. */ 1052 1053 lp = xy->sc_dk.dk_label; 1054 1055 if (bounds_check_with_label(&xy->sc_dk, bp, 1056 (xy->flags & XY_WLABEL) != 0) <= 0) 1057 goto done; 1058 1059 /* 1060 * Now convert the block number to absolute and put it in 1061 * terms of the device's logical block size. 1062 */ 1063 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1064 if (DISKPART(bp->b_dev) != RAW_PART) 1065 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1066 1067 bp->b_rawblkno = blkno; 1068 1069 /* 1070 * now we know we have a valid buf structure that we need to do I/O 1071 * on. 1072 */ 1073 1074 s = splbio(); /* protect the queues */ 1075 1076 bufq_put(xy->xyq, bp); /* XXX disksort_cylinder */ 1077 1078 /* start 'em up */ 1079 1080 xyc_start(xy->parent, NULL); 1081 1082 /* done! */ 1083 1084 splx(s); 1085 return; 1086 1087 done: 1088 /* tells upper layers we are done with this buf */ 1089 bp->b_resid = bp->b_bcount; 1090 biodone(bp); 1091 } 1092 /* 1093 * end of {b,c}devsw functions 1094 */ 1095 1096 /* 1097 * i n t e r r u p t f u n c t i o n 1098 * 1099 * xycintr: hardware interrupt. 1100 */ 1101 int 1102 xycintr(void *v) 1103 { 1104 struct xyc_softc *xycsc = v; 1105 1106 /* kick the event counter */ 1107 xycsc->sc_intrcnt.ev_count++; 1108 1109 /* remove as many done IOPBs as possible */ 1110 xyc_remove_iorq(xycsc); 1111 1112 /* start any iorq's already waiting */ 1113 xyc_start(xycsc, NULL); 1114 1115 return 1; 1116 } 1117 /* 1118 * end of interrupt function 1119 */ 1120 1121 /* 1122 * i n t e r n a l f u n c t i o n s 1123 */ 1124 1125 /* 1126 * xyc_rqinit: fill out the fields of an I/O request 1127 */ 1128 1129 inline void 1130 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, 1131 int md, u_long blk, int cnt, void *db, struct buf *bp) 1132 { 1133 1134 rq->xyc = xyc; 1135 rq->xy = xy; 1136 rq->ttl = XYC_MAXTTL + 10; 1137 rq->mode = md; 1138 rq->tries = rq->errno = rq->lasterror = 0; 1139 rq->blockno = blk; 1140 rq->sectcnt = cnt; 1141 rq->dbuf = rq->dbufbase = db; 1142 rq->buf = bp; 1143 } 1144 1145 /* 1146 * xyc_rqtopb: load up an IOPB based on an iorq 1147 */ 1148 1149 void 1150 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1151 { 1152 u_long block, dp; 1153 1154 /* normal IOPB case, standard stuff */ 1155 1156 /* chain bit handled later */ 1157 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1158 iopb->com = cmd; 1159 iopb->errno = 0; 1160 iopb->errs = 0; 1161 iopb->done = 0; 1162 if (iorq->xy) { 1163 iopb->unit = iorq->xy->xy_drive; 1164 iopb->dt = iorq->xy->drive_type; 1165 } else { 1166 iopb->unit = 0; 1167 iopb->dt = 0; 1168 } 1169 block = iorq->blockno; 1170 if (iorq->xy == NULL || block == 0) { 1171 iopb->sect = iopb->head = iopb->cyl = 0; 1172 } else { 1173 iopb->sect = block % iorq->xy->nsect; 1174 block = block / iorq->xy->nsect; 1175 iopb->head = block % iorq->xy->nhead; 1176 block = block / iorq->xy->nhead; 1177 iopb->cyl = block; 1178 } 1179 iopb->scnt = iorq->sectcnt; 1180 if (iorq->dbuf == NULL) { 1181 iopb->dataa = 0; 1182 iopb->datar = 0; 1183 } else { 1184 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1185 iopb->dataa = (dp & 0xffff); 1186 iopb->datar = ((dp & 0xff0000) >> 16); 1187 } 1188 iopb->subfn = subfun; 1189 } 1190 1191 1192 /* 1193 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1194 */ 1195 1196 int 1197 xyc_unbusy(struct xyc *xyc, int del) 1198 { 1199 1200 while (del-- > 0) { 1201 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1202 break; 1203 DELAY(1); 1204 } 1205 return del == 0 ? XY_ERR_FAIL : XY_ERR_AOK; 1206 } 1207 1208 /* 1209 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1210 * note that NORM requests are handled separately. 1211 */ 1212 int 1213 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1214 int scnt, char *dptr, int fullmode) 1215 { 1216 struct xy_iorq *iorq = xycsc->ciorq; 1217 struct xy_iopb *iopb = xycsc->ciopb; 1218 int submode = XY_STATE(fullmode); 1219 1220 /* 1221 * is someone else using the control iopq wait for it if we can 1222 */ 1223 start: 1224 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1225 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1226 return XY_ERR_FAIL; 1227 goto start; 1228 } 1229 1230 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1231 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1232 iorq->mode = XY_SUB_FREE; 1233 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1234 } 1235 1236 /* init iorq/iopb */ 1237 1238 xyc_rqinit(iorq, xycsc, 1239 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1240 fullmode, block, scnt, dptr, NULL); 1241 1242 /* load IOPB from iorq */ 1243 1244 xyc_rqtopb(iorq, iopb, cmd, subfn); 1245 1246 /* submit it for processing */ 1247 1248 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1249 1250 return XY_ERR_AOK; 1251 } 1252 1253 /* 1254 * xyc_startbuf 1255 * start a buffer for running 1256 */ 1257 1258 int 1259 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1260 { 1261 struct xy_iorq *iorq; 1262 struct xy_iopb *iopb; 1263 u_long block; 1264 void *dbuf; 1265 1266 iorq = xysc->xyrq; 1267 iopb = iorq->iopb; 1268 1269 /* get buf */ 1270 1271 if (bp == NULL) 1272 panic("%s null buf", __func__); 1273 1274 #ifdef XYC_DEBUG 1275 int partno = DISKPART(bp->b_dev); 1276 printf("%s: %s%c: %s block %d\n", __func__, device_xname(xysc->sc_dev), 1277 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", 1278 (int)bp->b_blkno); 1279 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1280 bp->b_bcount, bp->b_data); 1281 #endif 1282 1283 /* 1284 * load request. 1285 * 1286 * also, note that there are two kinds of buf structures, those with 1287 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1288 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1289 * buffer which has already been mapped into DVMA space. (Not on sun3) 1290 * However, if B_PHYS is not set, then the buffer is a normal system 1291 * buffer which does *not* live in DVMA space. In that case we call 1292 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1293 * 1294 * in cases where we do a dvma_mapin, note that iorq points to the 1295 * buffer as mapped into DVMA space, where as the bp->b_data points 1296 * to its non-DVMA mapping. 1297 * 1298 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1299 * into dvma space, only that it was remapped into the kernel. 1300 * We ALWAYS have to remap the kernel buf into DVMA space. 1301 * (It is done inexpensively, using whole segments!) 1302 */ 1303 1304 block = bp->b_rawblkno; 1305 1306 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1307 if (dbuf == NULL) { /* out of DVMA space */ 1308 printf("%s: warning: out of DVMA space\n", 1309 device_xname(xycsc->sc_dev)); 1310 return XY_ERR_FAIL; /* XXX: need some sort of 1311 * call-back scheme here? */ 1312 } 1313 1314 /* init iorq and load iopb from it */ 1315 1316 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1317 bp->b_bcount / XYFM_BPS, dbuf, bp); 1318 1319 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1320 1321 /* Instrumentation. */ 1322 disk_busy(&xysc->sc_dk); 1323 1324 return XY_ERR_AOK; 1325 } 1326 1327 1328 /* 1329 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1330 * if ok. if it fail returns an error code. type is XY_SUB_*. 1331 * 1332 * note: caller frees iorq in all cases except NORM 1333 * 1334 * return value: 1335 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1336 * WAIT: XY_AOK (success), <error-code> (failed) 1337 * POLL: <same as WAIT> 1338 * NOQ : <same as NORM> 1339 * 1340 * there are three sources for i/o requests: 1341 * [1] xystrategy: normal block I/O, using "struct buf" system. 1342 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1343 * [3] open/ioctl: these are I/O requests done in the context of a process, 1344 * and the process should block until they are done. 1345 * 1346 * software state is stored in the iorq structure. each iorq has an 1347 * iopb structure. the hardware understands the iopb structure. 1348 * every command must go through an iopb. a 450 handles one iopb at a 1349 * time, where as a 451 can take them in chains. [the 450 claims it 1350 * can handle chains, but is appears to be buggy...] iopb are allocated 1351 * in DVMA space at boot up time. each disk gets one iopb, and the 1352 * controller gets one (for POLL and WAIT commands). what happens if 1353 * the iopb is busy? for i/o type [1], the buffers are queued at the 1354 * "buff" layer and * picked up later by the interrupt routine. for case 1355 * [2] we can only be blocked if there is a WAIT type I/O request being 1356 * run. since this can only happen when we are crashing, we wait a sec 1357 * and then steal the IOPB. for case [3] the process can sleep 1358 * on the iorq free list until some iopbs are available. 1359 */ 1360 1361 int 1362 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1363 { 1364 struct xy_iopb *iopb; 1365 u_long iopbaddr; 1366 1367 #ifdef XYC_DEBUG 1368 printf("%s(%s, addr=0x%x, type=%d)\n", __func__, 1369 device_xname(xycsc->sc_dev), iorq, type); 1370 #endif 1371 1372 /* first check and see if controller is busy */ 1373 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1374 #ifdef XYC_DEBUG 1375 printf("%s: XYC not ready (BUSY)\n", __func__); 1376 #endif 1377 if (type == XY_SUB_NOQ) 1378 return XY_ERR_FAIL; /* failed */ 1379 switch (type) { 1380 case XY_SUB_NORM: 1381 return XY_ERR_AOK; /* success */ 1382 case XY_SUB_WAIT: 1383 while (iorq->iopb->done == 0) { 1384 (void)tsleep(iorq, PRIBIO, "xyciorq", 0); 1385 } 1386 return (iorq->errno); 1387 case XY_SUB_POLL: /* steal controller */ 1388 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1389 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == 1390 XY_ERR_FAIL) 1391 panic("%s: stuck xyc", __func__); 1392 printf("%s: stole controller\n", 1393 device_xname(xycsc->sc_dev)); 1394 break; 1395 default: 1396 panic("%s adding", __func__); 1397 } 1398 } 1399 1400 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1401 if (iopb == NULL) { /* nothing doing? */ 1402 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1403 return XY_ERR_AOK; 1404 panic("xyc_submit_iorq: xyc_chain failed!"); 1405 } 1406 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1407 1408 XYC_GO(xycsc->xyc, iopbaddr); 1409 1410 /* command now running, wrap it up */ 1411 switch (type) { 1412 case XY_SUB_NORM: 1413 case XY_SUB_NOQ: 1414 return XY_ERR_AOK; /* success */ 1415 case XY_SUB_WAIT: 1416 while (iorq->iopb->done == 0) { 1417 (void)tsleep(iorq, PRIBIO, "xyciorq", 0); 1418 } 1419 return iorq->errno; 1420 case XY_SUB_POLL: 1421 return xyc_piodriver(xycsc, iorq); 1422 default: 1423 panic("%s wrap up", __func__); 1424 } 1425 panic("%s impossible", __func__); 1426 return 0; /* not reached */ 1427 } 1428 1429 1430 /* 1431 * xyc_chain: build a chain. return dvma address of first element in 1432 * the chain. iorq != NULL: means we only want that item on the chain. 1433 */ 1434 1435 struct xy_iopb * 1436 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1437 { 1438 int togo, chain, hand; 1439 struct xy_iopb *iopb, *prev_iopb; 1440 1441 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1442 1443 /* 1444 * promote control IOPB to the top 1445 */ 1446 if (iorq == NULL) { 1447 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1448 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1449 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1450 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1451 } 1452 1453 /* 1454 * special case: if iorq != NULL then we have a POLL or WAIT request. 1455 * we let these take priority and do them first. 1456 */ 1457 if (iorq) { 1458 xycsc->xy_chain[0] = iorq; 1459 iorq->iopb->chen = 0; 1460 return iorq->iopb; 1461 } 1462 1463 /* 1464 * NORM case: do round robin and maybe chain (if allowed and possible) 1465 */ 1466 1467 chain = 0; 1468 hand = xycsc->xy_hand; 1469 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1470 1471 for (togo = XYC_MAXIOPB ; togo > 0 ; 1472 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1473 1474 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1475 xycsc->iopbase[hand].done) 1476 continue; /* not ready-for-i/o */ 1477 1478 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1479 iopb = xycsc->xy_chain[chain]->iopb; 1480 iopb->chen = 0; 1481 if (chain != 0) { /* adding a link to a chain? */ 1482 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1483 prev_iopb->chen = 1; 1484 prev_iopb->nxtiopb = 0xffff & 1485 dvma_kvtopa(iopb, xycsc->bustype); 1486 } else { /* head of chain */ 1487 iorq = xycsc->xy_chain[chain]; 1488 } 1489 chain++; 1490 if (xycsc->no_ols) 1491 break; /* quit if chaining dis-allowed */ 1492 } 1493 return iorq ? iorq->iopb : NULL; 1494 } 1495 1496 /* 1497 * xyc_piodriver 1498 * 1499 * programmed i/o driver. this function takes over the computer 1500 * and drains off the polled i/o request. it returns the status of the iorq 1501 * the caller is interesting in. 1502 */ 1503 int 1504 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1505 { 1506 int nreset = 0; 1507 int retval = 0; 1508 u_long res; 1509 1510 #ifdef XYC_DEBUG 1511 printf("%s(%s, 0x%x)\n", __func__, device_xname(xycsc->sc_dev), iorq); 1512 #endif 1513 1514 while (iorq->iopb->done == 0) { 1515 1516 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1517 1518 /* we expect some progress soon */ 1519 if (res == XY_ERR_FAIL && nreset >= 2) { 1520 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1521 #ifdef XYC_DEBUG 1522 printf("%s: timeout\n", __func__); 1523 #endif 1524 return XY_ERR_FAIL; 1525 } 1526 if (res == XY_ERR_FAIL) { 1527 if (xyc_reset(xycsc, 0, 1528 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1529 XY_ERR_FAIL, 0) == XY_ERR_FAIL) 1530 return XY_ERR_FAIL; /* flushes all but POLL 1531 * requests, resets */ 1532 continue; 1533 } 1534 1535 xyc_remove_iorq(xycsc); /* may resubmit request */ 1536 1537 if (iorq->iopb->done == 0) 1538 xyc_start(xycsc, iorq); 1539 } 1540 1541 /* get return value */ 1542 1543 retval = iorq->errno; 1544 1545 #ifdef XYC_DEBUG 1546 printf("%s: done, retval = 0x%x (%s)\n", __func__, 1547 iorq->errno, xyc_e2str(iorq->errno)); 1548 #endif 1549 1550 /* start up any bufs that have queued */ 1551 1552 xyc_start(xycsc, NULL); 1553 1554 return retval; 1555 } 1556 1557 /* 1558 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1559 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1560 */ 1561 void 1562 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1563 { 1564 struct xy_iopb tmpiopb; 1565 u_long addr; 1566 int del; 1567 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1568 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1569 xycsc->ciopb->ien = 0; 1570 xycsc->ciopb->com = XYCMD_RST; 1571 xycsc->ciopb->unit = xysc->xy_drive; 1572 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1573 1574 XYC_GO(xycsc->xyc, addr); 1575 1576 del = XYC_RESETUSEC; 1577 while (del > 0) { 1578 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1579 break; 1580 DELAY(1); 1581 del--; 1582 } 1583 1584 if (del <= 0 || xycsc->ciopb->errs) { 1585 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1586 xyc_e2str(xycsc->ciopb->errno)); 1587 del = xycsc->xyc->xyc_rsetup; 1588 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1589 panic("%s", __func__); 1590 } else { 1591 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1592 } 1593 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1594 } 1595 1596 1597 /* 1598 * xyc_reset: reset everything: requests are marked as errors except 1599 * a polled request (which is resubmitted) 1600 */ 1601 int 1602 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1603 int error, struct xy_softc *xysc) 1604 { 1605 int del = 0, lcv, retval = XY_ERR_AOK; 1606 struct xy_iorq *iorq; 1607 1608 /* soft reset hardware */ 1609 1610 if (quiet == 0) 1611 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1612 del = xycsc->xyc->xyc_rsetup; 1613 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1614 if (del == XY_ERR_FAIL) { 1615 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1616 retval = XY_ERR_FAIL; 1617 } 1618 if (xysc) 1619 xyc_xyreset(xycsc, xysc); 1620 1621 /* fix queues based on "blast-mode" */ 1622 1623 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1624 iorq = &xycsc->reqs[lcv]; 1625 1626 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1627 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1628 XY_STATE(iorq->mode) != XY_SUB_NORM) 1629 /* is it active? */ 1630 continue; 1631 1632 if (blastmode == XY_RSET_ALL || 1633 blastmode != iorq) { 1634 /* failed */ 1635 iorq->errno = error; 1636 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1637 switch (XY_STATE(iorq->mode)) { 1638 case XY_SUB_NORM: 1639 iorq->buf->b_error = EIO; 1640 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1641 /* Sun3: map/unmap regardless of B_PHYS */ 1642 dvma_mapout(iorq->dbufbase, 1643 iorq->buf->b_bcount); 1644 (void)bufq_get(iorq->xy->xyq); 1645 disk_unbusy(&iorq->xy->sc_dk, 1646 (iorq->buf->b_bcount - iorq->buf->b_resid), 1647 (iorq->buf->b_flags & B_READ)); 1648 biodone(iorq->buf); 1649 iorq->mode = XY_SUB_FREE; 1650 break; 1651 case XY_SUB_WAIT: 1652 wakeup(iorq); 1653 case XY_SUB_POLL: 1654 iorq->mode = 1655 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1656 break; 1657 } 1658 1659 } else { 1660 1661 /* resubmit, no need to do anything here */ 1662 } 1663 } 1664 1665 /* 1666 * now, if stuff is waiting, start it. 1667 * since we just reset it should go 1668 */ 1669 xyc_start(xycsc, NULL); 1670 1671 return retval; 1672 } 1673 1674 /* 1675 * xyc_start: start waiting buffers 1676 */ 1677 1678 void 1679 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1680 { 1681 int lcv; 1682 struct xy_softc *xy; 1683 1684 if (iorq == NULL) { 1685 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1686 if ((xy = xycsc->sc_drives[lcv]) == NULL) 1687 continue; 1688 if (bufq_peek(xy->xyq) == NULL) 1689 continue; 1690 if (xy->xyrq->mode != XY_SUB_FREE) 1691 continue; 1692 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1693 } 1694 } 1695 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1696 } 1697 1698 /* 1699 * xyc_remove_iorq: remove "done" IOPB's. 1700 */ 1701 1702 int 1703 xyc_remove_iorq(struct xyc_softc *xycsc) 1704 { 1705 int errno, rq, comm, errs; 1706 struct xyc *xyc = xycsc->xyc; 1707 u_long addr; 1708 struct xy_iopb *iopb; 1709 struct xy_iorq *iorq; 1710 struct buf *bp; 1711 1712 if (xyc->xyc_csr & XYC_DERR) { 1713 /* 1714 * DOUBLE ERROR: should never happen under normal use. This 1715 * error is so bad, you can't even tell which IOPB is bad, so 1716 * we dump them all. 1717 */ 1718 errno = XY_ERR_DERR; 1719 printf("%s: DOUBLE ERROR!\n", device_xname(xycsc->sc_dev)); 1720 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1721 printf("%s: soft reset failed!\n", 1722 device_xname(xycsc->sc_dev)); 1723 panic("%s: controller DEAD", __func__); 1724 } 1725 return XY_ERR_AOK; 1726 } 1727 1728 /* 1729 * get iopb that is done, loop down the chain 1730 */ 1731 1732 if (xyc->xyc_csr & XYC_ERR) { 1733 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1734 } 1735 if (xyc->xyc_csr & XYC_IPND) { 1736 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1737 } 1738 1739 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1740 iorq = xycsc->xy_chain[rq]; 1741 if (iorq == NULL) break; /* done ! */ 1742 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1743 continue; /* free, or done */ 1744 iopb = iorq->iopb; 1745 if (iopb->done == 0) 1746 continue; /* not done yet */ 1747 1748 comm = iopb->com; 1749 errs = iopb->errs; 1750 1751 if (errs) 1752 iorq->errno = iopb->errno; 1753 else 1754 iorq->errno = 0; 1755 1756 /* handle non-fatal errors */ 1757 1758 if (errs && 1759 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1760 continue; /* AOK: we resubmitted it */ 1761 1762 1763 /* this iorq is now done (hasn't been restarted or anything) */ 1764 1765 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1766 xyc_perror(iorq, iopb, 0); 1767 1768 /* now, if read/write check to make sure we got all the data 1769 * we needed. (this may not be the case if we got an error in 1770 * the middle of a multisector request). */ 1771 1772 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1773 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1774 /* we just successfully processed a bad144 sector 1775 * note: if we are in bad 144 mode, the pointers have 1776 * been advanced already (see above) and are pointing 1777 * at the bad144 sector. to exit bad144 mode, we 1778 * must advance the pointers 1 sector and issue a new 1779 * request if there are still sectors left to process 1780 * 1781 */ 1782 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1783 1784 /* exit b144 mode */ 1785 iorq->mode = iorq->mode & (~XY_MODE_B144); 1786 1787 if (iorq->sectcnt) { /* more to go! */ 1788 iorq->lasterror = iorq->errno = iopb->errno = 0; 1789 iopb->errs = iopb->done = 0; 1790 iorq->tries = 0; 1791 iopb->scnt = iorq->sectcnt; 1792 iopb->cyl = 1793 iorq->blockno / iorq->xy->sectpercyl; 1794 iopb->head = 1795 (iorq->blockno / iorq->xy->nhead) % 1796 iorq->xy->nhead; 1797 iopb->sect = iorq->blockno % XYFM_BPS; 1798 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1799 iopb->dataa = (addr & 0xffff); 1800 iopb->datar = ((addr & 0xff0000) >> 16); 1801 /* will resubit at end */ 1802 continue; 1803 } 1804 } 1805 /* final cleanup, totally done with this request */ 1806 1807 switch (XY_STATE(iorq->mode)) { 1808 case XY_SUB_NORM: 1809 bp = iorq->buf; 1810 if (errs) { 1811 bp->b_error = EIO; 1812 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1813 } else { 1814 bp->b_resid = 0; /* done */ 1815 } 1816 /* Sun3: map/unmap regardless of B_PHYS */ 1817 dvma_mapout(iorq->dbufbase, iorq->buf->b_bcount); 1818 (void)bufq_get(iorq->xy->xyq); 1819 disk_unbusy(&iorq->xy->sc_dk, 1820 (bp->b_bcount - bp->b_resid), 1821 (bp->b_flags & B_READ)); 1822 iorq->mode = XY_SUB_FREE; 1823 biodone(bp); 1824 break; 1825 case XY_SUB_WAIT: 1826 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1827 wakeup(iorq); 1828 break; 1829 case XY_SUB_POLL: 1830 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1831 break; 1832 } 1833 } 1834 1835 return XY_ERR_AOK; 1836 } 1837 1838 /* 1839 * xyc_perror: print error. 1840 * - if still_trying is true: we got an error, retried and got a 1841 * different error. in that case lasterror is the old error, 1842 * and errno is the new one. 1843 * - if still_trying is not true, then if we ever had an error it 1844 * is in lasterror. also, if iorq->errno == 0, then we recovered 1845 * from that error (otherwise iorq->errno == iorq->lasterror). 1846 */ 1847 void 1848 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1849 { 1850 int error = iorq->lasterror; 1851 1852 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 1853 : device_xname(iorq->xyc->sc_dev)); 1854 if (iorq->buf) 1855 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 1856 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1857 printf("%s %d/%d/%d: ", 1858 (iopb->com == XYCMD_RD) ? "read" : "write", 1859 iopb->cyl, iopb->head, iopb->sect); 1860 printf("%s", xyc_e2str(error)); 1861 1862 if (still_trying) 1863 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1864 else 1865 if (iorq->errno == 0) 1866 printf(" [recovered in %d tries]", iorq->tries); 1867 1868 printf("\n"); 1869 } 1870 1871 /* 1872 * xyc_error: non-fatal error encountered... recover. 1873 * return AOK if resubmitted, return FAIL if this iopb is done 1874 */ 1875 int 1876 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 1877 int comm) 1878 { 1879 int errno = iorq->errno; 1880 int erract = xyc_entoact(errno); 1881 int oldmode, advance, i; 1882 1883 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1884 oldmode = iorq->mode; 1885 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1886 /* make xyc_start ignore us */ 1887 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1888 iorq->mode = oldmode; 1889 } 1890 /* check for read/write to a sector in bad144 table if bad: redirect 1891 * request to bad144 area */ 1892 1893 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1894 (iorq->mode & XY_MODE_B144) == 0) { 1895 advance = iorq->sectcnt - iopb->scnt; 1896 XYC_ADVANCE(iorq, advance); 1897 if ((i = isbad(&iorq->xy->dkb, 1898 iorq->blockno / iorq->xy->sectpercyl, 1899 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1900 iorq->blockno % iorq->xy->nsect)) != -1) { 1901 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1902 * redirect */ 1903 iopb->errno = iopb->done = iopb->errs = 0; 1904 iopb->scnt = 1; 1905 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1906 /* second to last acyl */ 1907 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1908 * standard */ 1909 iopb->head = i / iorq->xy->nhead; 1910 iopb->sect = i % iorq->xy->nhead; 1911 /* will resubmit when we come out of remove_iorq */ 1912 return XY_ERR_AOK; /* recovered! */ 1913 } 1914 } 1915 1916 /* 1917 * it isn't a bad144 sector, must be real error! see if we can retry 1918 * it? 1919 */ 1920 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1921 xyc_perror(iorq, iopb, 1); /* inform of error state 1922 * change */ 1923 iorq->lasterror = errno; 1924 1925 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1926 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1927 iorq->tries++; 1928 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1929 /* will resubmit at end of remove_iorq */ 1930 return XY_ERR_AOK; /* recovered! */ 1931 } 1932 1933 /* failed to recover from this error */ 1934 return XY_ERR_FAIL; 1935 } 1936 1937 /* 1938 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1939 */ 1940 void 1941 xyc_tick(void *arg) 1942 { 1943 struct xyc_softc *xycsc = arg; 1944 int lcv, s, reset = 0; 1945 1946 /* reduce ttl for each request if one goes to zero, reset xyc */ 1947 s = splbio(); 1948 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1949 if (xycsc->reqs[lcv].mode == 0 || 1950 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1951 continue; 1952 xycsc->reqs[lcv].ttl--; 1953 if (xycsc->reqs[lcv].ttl == 0) 1954 reset = 1; 1955 } 1956 if (reset) { 1957 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 1958 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1959 } 1960 splx(s); 1961 1962 /* until next time */ 1963 1964 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1965 } 1966 1967 /* 1968 * xyc_ioctlcmd: this function provides a user level interface to the 1969 * controller via ioctl. this allows "format" programs to be written 1970 * in user code, and is also useful for some debugging. we return 1971 * an error code. called at user priority. 1972 * 1973 * XXX missing a few commands (see the 7053 driver for ideas) 1974 */ 1975 int 1976 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 1977 { 1978 int s, err, rqno; 1979 void *dvmabuf = NULL; 1980 struct xyc_softc *xycsc; 1981 1982 /* check sanity of requested command */ 1983 1984 switch (xio->cmd) { 1985 1986 case XYCMD_NOP: /* no op: everything should be zero */ 1987 if (xio->subfn || xio->dptr || xio->dlen || 1988 xio->block || xio->sectcnt) 1989 return EINVAL; 1990 break; 1991 1992 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1993 case XYCMD_WR: 1994 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1995 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1996 return EINVAL; 1997 break; 1998 1999 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2000 return EINVAL; 2001 break; 2002 2003 default: 2004 return EINVAL;/* ??? */ 2005 } 2006 2007 /* create DVMA buffer for request if needed */ 2008 2009 if (xio->dlen) { 2010 dvmabuf = dvma_malloc(xio->dlen); 2011 if (xio->cmd == XYCMD_WR) { 2012 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2013 if (err) { 2014 dvma_free(dvmabuf, xio->dlen); 2015 return err; 2016 } 2017 } 2018 } 2019 /* do it! */ 2020 2021 err = 0; 2022 xycsc = xy->parent; 2023 s = splbio(); 2024 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2025 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2026 if (rqno == XY_ERR_FAIL) { 2027 err = EIO; 2028 goto done; 2029 } 2030 xio->errno = xycsc->ciorq->errno; 2031 xio->tries = xycsc->ciorq->tries; 2032 XYC_DONE(xycsc, err); 2033 2034 if (xio->cmd == XYCMD_RD) 2035 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2036 2037 done: 2038 splx(s); 2039 if (dvmabuf) 2040 dvma_free(dvmabuf, xio->dlen); 2041 return err; 2042 } 2043 2044 /* 2045 * xyc_e2str: convert error code number into an error string 2046 */ 2047 const char * 2048 xyc_e2str(int no) 2049 { 2050 switch (no) { 2051 case XY_ERR_FAIL: 2052 return "Software fatal error"; 2053 case XY_ERR_DERR: 2054 return "DOUBLE ERROR"; 2055 case XY_ERR_AOK: 2056 return "Successful completion"; 2057 case XY_ERR_IPEN: 2058 return "Interrupt pending"; 2059 case XY_ERR_BCFL: 2060 return "Busy conflict"; 2061 case XY_ERR_TIMO: 2062 return "Operation timeout"; 2063 case XY_ERR_NHDR: 2064 return "Header not found"; 2065 case XY_ERR_HARD: 2066 return "Hard ECC error"; 2067 case XY_ERR_ICYL: 2068 return "Illegal cylinder address"; 2069 case XY_ERR_ISEC: 2070 return "Illegal sector address"; 2071 case XY_ERR_SMAL: 2072 return "Last sector too small"; 2073 case XY_ERR_SACK: 2074 return "Slave ACK error (non-existent memory)"; 2075 case XY_ERR_CHER: 2076 return "Cylinder and head/header error"; 2077 case XY_ERR_SRTR: 2078 return "Auto-seek retry successful"; 2079 case XY_ERR_WPRO: 2080 return "Write-protect error"; 2081 case XY_ERR_UIMP: 2082 return "Unimplemented command"; 2083 case XY_ERR_DNRY: 2084 return "Drive not ready"; 2085 case XY_ERR_SZER: 2086 return "Sector count zero"; 2087 case XY_ERR_DFLT: 2088 return "Drive faulted"; 2089 case XY_ERR_ISSZ: 2090 return "Illegal sector size"; 2091 case XY_ERR_SLTA: 2092 return "Self test A"; 2093 case XY_ERR_SLTB: 2094 return "Self test B"; 2095 case XY_ERR_SLTC: 2096 return "Self test C"; 2097 case XY_ERR_SOFT: 2098 return "Soft ECC error"; 2099 case XY_ERR_SFOK: 2100 return "Soft ECC error recovered"; 2101 case XY_ERR_IHED: 2102 return "Illegal head"; 2103 case XY_ERR_DSEQ: 2104 return "Disk sequencer error"; 2105 case XY_ERR_SEEK: 2106 return "Seek error"; 2107 default: 2108 return "Unknown error"; 2109 } 2110 } 2111 2112 int 2113 xyc_entoact(int errno) 2114 { 2115 2116 switch (errno) { 2117 case XY_ERR_FAIL: 2118 case XY_ERR_DERR: 2119 case XY_ERR_IPEN: 2120 case XY_ERR_BCFL: 2121 case XY_ERR_ICYL: 2122 case XY_ERR_ISEC: 2123 case XY_ERR_UIMP: 2124 case XY_ERR_SZER: 2125 case XY_ERR_ISSZ: 2126 case XY_ERR_SLTA: 2127 case XY_ERR_SLTB: 2128 case XY_ERR_SLTC: 2129 case XY_ERR_IHED: 2130 case XY_ERR_SACK: 2131 case XY_ERR_SMAL: 2132 return XY_ERA_PROG; /* program error ! */ 2133 2134 case XY_ERR_TIMO: 2135 case XY_ERR_NHDR: 2136 case XY_ERR_HARD: 2137 case XY_ERR_DNRY: 2138 case XY_ERR_CHER: 2139 case XY_ERR_SEEK: 2140 case XY_ERR_SOFT: 2141 return XY_ERA_HARD; /* hard error, retry */ 2142 2143 case XY_ERR_DFLT: 2144 case XY_ERR_DSEQ: 2145 return XY_ERA_RSET; /* hard error reset */ 2146 2147 case XY_ERR_SRTR: 2148 case XY_ERR_SFOK: 2149 case XY_ERR_AOK: 2150 return XY_ERA_SOFT; /* an FYI error */ 2151 2152 case XY_ERR_WPRO: 2153 return XY_ERA_WPRO; /* write protect */ 2154 } 2155 2156 return XY_ERA_PROG; /* ??? */ 2157 } 2158
Indexes created Mon Sep 29 21:09:56 GMT 2025