1 /* $NetBSD: xy.c,v 1.73 2013/11/07 17:50:18 christos 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@achilles.net>'s unfinished 450/451 driver 45 * 46 */ 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.73 2013/11/07 17:50:18 christos 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 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 221 }; 222 223 const struct cdevsw xy_cdevsw = { 224 xyopen, xyclose, xyread, xywrite, xyioctl, 225 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 226 }; 227 228 /* 229 * dkdriver 230 */ 231 232 struct dkdriver xydkdriver = { xystrategy }; 233 234 /* 235 * start: disk label fix code (XXX) 236 */ 237 238 static void *xy_labeldata; 239 240 static void 241 xydummystrat(struct buf *bp) 242 { 243 244 if (bp->b_bcount != XYFM_BPS) 245 panic("%s: b_bcount", __func__); 246 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 247 bp->b_oflags |= BO_DONE; 248 bp->b_cflags &= ~BC_BUSY; 249 } 250 251 int 252 xygetdisklabel(struct xy_softc *xy, void *b) 253 { 254 const char *err; 255 struct sun_disklabel *sdl; 256 257 /* We already have the label data in `b'; setup for dummy strategy */ 258 xy_labeldata = b; 259 260 /* Required parameter for readdisklabel() */ 261 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 262 263 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 264 xydummystrat, xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 265 if (err) { 266 printf("%s: %s\n", device_xname(xy->sc_dev), err); 267 return XY_ERR_FAIL; 268 } 269 270 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 271 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 272 if (sdl->sl_magic == SUN_DKMAGIC) 273 xy->pcyl = sdl->sl_pcyl; 274 else { 275 printf("%s: WARNING: no `pcyl' in disk label.\n", 276 device_xname(xy->sc_dev)); 277 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 278 xy->sc_dk.dk_label->d_acylinders; 279 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 280 device_xname(xy->sc_dev), xy->pcyl); 281 } 282 283 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 284 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 285 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 286 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 287 xy->sectpercyl = xy->nhead * xy->nsect; 288 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 289 * sun->bsd */ 290 return XY_ERR_AOK; 291 } 292 293 /* 294 * end: disk label fix code (XXX) 295 */ 296 297 /* 298 * a u t o c o n f i g f u n c t i o n s 299 */ 300 301 /* 302 * xycmatch: determine if xyc is present or not. we do a 303 * soft reset to detect the xyc. 304 */ 305 static int 306 xycmatch(device_t parent, cfdata_t cf, void *aux) 307 { 308 struct confargs *ca = aux; 309 310 /* No default VME address. */ 311 if (ca->ca_paddr == -1) 312 return 0; 313 314 /* Make sure something is there... */ 315 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 316 return 0; 317 318 /* Default interrupt priority. */ 319 if (ca->ca_intpri == -1) 320 ca->ca_intpri = 2; 321 322 return 1; 323 } 324 325 /* 326 * xycattach: attach controller 327 */ 328 static void 329 xycattach(device_t parent, device_t self, void *aux) 330 { 331 struct xyc_softc *xyc = device_private(self); 332 struct confargs *ca = aux; 333 struct xyc_attach_args xa; 334 int lcv, err, res, pbsz; 335 void *tmp, *tmp2; 336 u_long ultmp; 337 338 /* get addressing and intr level stuff from autoconfig and load it 339 * into our xyc_softc. */ 340 341 xyc->sc_dev = self; 342 xyc->xyc = (struct xyc *)bus_mapin(ca->ca_bustype, ca->ca_paddr, 343 sizeof(struct xyc)); 344 xyc->bustype = ca->ca_bustype; 345 xyc->ipl = ca->ca_intpri; 346 xyc->vector = ca->ca_intvec; 347 xyc->no_ols = 0; /* XXX should be from config */ 348 349 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 350 xyc->sc_drives[lcv] = NULL; 351 352 /* 353 * allocate and zero buffers 354 * check boundaries of the KVA's ... all IOPBs must reside in 355 * the same 64K region. 356 */ 357 358 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 359 tmp = tmp2 = (struct xy_iopb *)dvma_malloc(pbsz); /* KVA */ 360 ultmp = (u_long)tmp; 361 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 362 tmp = (struct xy_iopb *)dvma_malloc(pbsz); /* retry! */ 363 dvma_free(tmp2, pbsz); 364 ultmp = (u_long) tmp; 365 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 366 aprint_error(": can't alloc IOPB mem in 64K\n"); 367 return; 368 } 369 } 370 memset(tmp, 0, pbsz); 371 xyc->iopbase = tmp; 372 xyc->dvmaiopb = 373 (struct xy_iopb *)dvma_kvtopa(xyc->iopbase, xyc->bustype); 374 xyc->reqs = malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 375 M_DEVBUF, M_NOWAIT | M_ZERO); 376 if (xyc->reqs == NULL) 377 panic("xyc malloc"); 378 379 /* 380 * init iorq to iopb pointers, and non-zero fields in the 381 * iopb which never change. 382 */ 383 384 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 385 xyc->xy_chain[lcv] = NULL; 386 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 387 xyc->iopbase[lcv].asr = 1; /* always the same */ 388 xyc->iopbase[lcv].eef = 1; /* always the same */ 389 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 390 xyc->iopbase[lcv].aud = 1; /* always the same */ 391 xyc->iopbase[lcv].relo = 1; /* always the same */ 392 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 393 } 394 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 395 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 396 xyc->xy_hand = 0; 397 398 /* read controller parameters and insure we have a 450/451 */ 399 400 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 401 res = xyc->ciopb->ctyp; 402 XYC_DONE(xyc, err); 403 if (res != XYCT_450) { 404 if (err) 405 aprint_error(": %s: ", xyc_e2str(err)); 406 aprint_error(": doesn't identify as a 450/451\n"); 407 return; 408 } 409 aprint_normal(": Xylogics 450/451"); 410 if (xyc->no_ols) 411 /* 450 doesn't overlap seek right */ 412 aprint_normal(" [OLS disabled]"); 413 aprint_normal("\n"); 414 if (err) { 415 aprint_error_dev(self, "error: %s\n", xyc_e2str(err)); 416 return; 417 } 418 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 419 aprint_error_dev(self, "24 bit addressing turned off\n"); 420 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 421 printf("to enable 24 bit mode and this driver\n"); 422 return; 423 } 424 425 /* link in interrupt with higher level software */ 426 isr_add_vectored(xycintr, xyc, ca->ca_intpri, ca->ca_intvec); 427 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 428 device_xname(self), "intr"); 429 430 callout_init(&xyc->sc_tick_ch, 0); 431 432 /* now we must look for disks using autoconfig */ 433 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 434 (void)config_found(self, (void *)&xa, xyc_print); 435 436 /* start the watchdog clock */ 437 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 438 } 439 440 static int 441 xyc_print(void *aux, const char *name) 442 { 443 struct xyc_attach_args *xa = aux; 444 445 if (name != NULL) 446 aprint_normal("%s: ", name); 447 448 if (xa->driveno != -1) 449 aprint_normal(" drive %d", xa->driveno); 450 451 return UNCONF; 452 } 453 454 /* 455 * xymatch: probe for disk. 456 * 457 * note: we almost always say disk is present. this allows us to 458 * spin up and configure a disk after the system is booted (we can 459 * call xyattach!). Also, wire down the relationship between the 460 * xy* and xyc* devices, to simplify boot device identification. 461 */ 462 static int 463 xymatch(device_t parent, cfdata_t cf, void *aux) 464 { 465 struct xyc_attach_args *xa = aux; 466 int xy_unit; 467 468 /* Match only on the "wired-down" controller+disk. */ 469 xy_unit = device_unit(parent) * 2 + xa->driveno; 470 if (cf->cf_unit != xy_unit) 471 return 0; 472 473 return 1; 474 } 475 476 /* 477 * xyattach: attach a disk. 478 */ 479 static void 480 xyattach(device_t parent, device_t self, void *aux) 481 { 482 struct xy_softc *xy = device_private(self); 483 struct xyc_softc *xyc = device_private(parent); 484 struct xyc_attach_args *xa = aux; 485 486 xy->sc_dev = self; 487 aprint_normal("\n"); 488 489 /* 490 * Always re-initialize the disk structure. We want statistics 491 * to start with a clean slate. 492 */ 493 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 494 disk_init(&xy->sc_dk, device_xname(self), &xydkdriver); 495 496 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 497 xy->flags = 0; 498 xy->parent = xyc; 499 500 /* init queue of waiting bufs */ 501 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 502 xy->xyrq = &xyc->reqs[xa->driveno]; 503 504 xy->xy_drive = xa->driveno; 505 xyc->sc_drives[xa->driveno] = xy; 506 507 /* Do init work common to attach and open. */ 508 xy_init(xy); 509 } 510 511 /* 512 * end of autoconfig functions 513 */ 514 515 /* 516 * Initialize a disk. This can be called from both autoconf and 517 * also from xyopen/xystrategy. 518 */ 519 static void 520 xy_init(struct xy_softc *xy) 521 { 522 struct xyc_softc *xyc; 523 struct dkbad *dkb; 524 void *dvmabuf; 525 int err, spt, mb, blk, lcv, fullmode, newstate; 526 527 xyc = xy->parent; 528 xy->state = XY_DRIVE_ATTACHING; 529 newstate = XY_DRIVE_UNKNOWN; 530 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 531 dvmabuf = dvma_malloc(XYFM_BPS); 532 533 /* first try and reset the drive */ 534 535 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 536 XYC_DONE(xyc, err); 537 if (err == XY_ERR_DNRY) { 538 printf("%s: drive %d: off-line\n", 539 device_xname(xy->sc_dev), xy->xy_drive); 540 goto done; 541 } 542 if (err) { 543 printf("%s: ERROR 0x%02x (%s)\n", 544 device_xname(xy->sc_dev), err, xyc_e2str(err)); 545 goto done; 546 } 547 printf("%s: drive %d ready", 548 device_xname(xy->sc_dev), xy->xy_drive); 549 550 /* 551 * now set drive parameters (to semi-bogus values) so we can read the 552 * disk label. 553 */ 554 xy->pcyl = xy->ncyl = 1; 555 xy->acyl = 0; 556 xy->nhead = 1; 557 xy->nsect = 1; 558 xy->sectpercyl = 1; 559 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 560 xy->dkb.bt_bad[lcv].bt_cyl = 561 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 562 563 /* read disk label */ 564 for (xy->drive_type = 0; xy->drive_type <= XYC_MAXDT; 565 xy->drive_type++) { 566 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 567 dvmabuf, fullmode); 568 XYC_DONE(xyc, err); 569 if (err == XY_ERR_AOK) 570 break; 571 } 572 573 if (err != XY_ERR_AOK) { 574 printf("%s: reading disk label failed: %s\n", 575 device_xname(xy->sc_dev), xyc_e2str(err)); 576 goto done; 577 } 578 printf("%s: drive type %d\n", 579 device_xname(xy->sc_dev), xy->drive_type); 580 581 newstate = XY_DRIVE_NOLABEL; 582 583 xy->hw_spt = spt = 0; /* XXX needed ? */ 584 /* Attach the disk: must be before getdisklabel to malloc label */ 585 disk_attach(&xy->sc_dk); 586 587 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 588 goto done; 589 590 /* inform the user of what is up */ 591 printf("%s: <%s>, pcyl %d\n", 592 device_xname(xy->sc_dev), 593 (char *)dvmabuf, xy->pcyl); 594 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 595 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 596 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect); 597 598 /* 599 * 450/451 stupidity: the drive type is encoded into the format 600 * of the disk. the drive type in the IOPB must match the drive 601 * type in the format, or you will not be able to do I/O to the 602 * disk (you get header not found errors). if you have two drives 603 * of different sizes that have the same drive type in their 604 * formatting then you are out of luck. 605 * 606 * this problem was corrected in the 753/7053. 607 */ 608 609 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 610 struct xy_softc *oxy; 611 612 oxy = xyc->sc_drives[lcv]; 613 if (oxy == NULL || oxy == xy) 614 continue; 615 if (oxy->drive_type != xy->drive_type) 616 continue; 617 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 618 xy->nhead != oxy->nhead) { 619 printf("%s: %s and %s must be the same size!\n", 620 device_xname(xyc->sc_dev), 621 device_xname(xy->sc_dev), 622 device_xname(oxy->sc_dev)); 623 panic("xy drive size mismatch"); 624 } 625 } 626 627 628 /* now set the real drive parameters! */ 629 blk = (xy->nsect - 1) + 630 ((xy->nhead - 1) * xy->nsect) + 631 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 632 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 633 XYC_DONE(xyc, err); 634 if (err) { 635 printf("%s: write drive size failed: %s\n", 636 device_xname(xy->sc_dev), xyc_e2str(err)); 637 goto done; 638 } 639 newstate = XY_DRIVE_ONLINE; 640 641 /* 642 * read bad144 table. this table resides on the first sector of the 643 * last track of the disk (i.e. second cyl of "acyl" area). 644 */ 645 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 646 /* last cyl */ 647 (xy->nhead - 1) * xy->nsect; /* last head */ 648 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 649 dvmabuf, fullmode); 650 XYC_DONE(xyc, err); 651 if (err) { 652 printf("%s: reading bad144 failed: %s\n", 653 device_xname(xy->sc_dev), xyc_e2str(err)); 654 goto done; 655 } 656 657 /* check dkbad for sanity */ 658 dkb = (struct dkbad *)dvmabuf; 659 for (lcv = 0; lcv < 126; lcv++) { 660 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 661 dkb->bt_bad[lcv].bt_cyl == 0) && 662 dkb->bt_bad[lcv].bt_trksec == 0xffff) 663 continue; /* blank */ 664 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 665 break; 666 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 667 break; 668 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 669 break; 670 } 671 if (lcv != 126) { 672 printf("%s: warning: invalid bad144 sector!\n", 673 device_xname(xy->sc_dev)); 674 } else { 675 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 676 } 677 678 done: 679 xy->state = newstate; 680 dvma_free(dvmabuf, XYFM_BPS); 681 } 682 683 /* 684 * { b , c } d e v s w f u n c t i o n s 685 */ 686 687 /* 688 * xyclose: close device 689 */ 690 int 691 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 692 { 693 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 694 int part = DISKPART(dev); 695 696 /* clear mask bits */ 697 698 switch (fmt) { 699 case S_IFCHR: 700 xy->sc_dk.dk_copenmask &= ~(1 << part); 701 break; 702 case S_IFBLK: 703 xy->sc_dk.dk_bopenmask &= ~(1 << part); 704 break; 705 } 706 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 707 708 return 0; 709 } 710 711 /* 712 * xydump: crash dump system 713 */ 714 int 715 xydump(dev_t dev, daddr_t blkno, void *va, size_t sz) 716 { 717 int unit, part; 718 struct xy_softc *xy; 719 720 unit = DISKUNIT(dev); 721 part = DISKPART(dev); 722 723 xy = device_lookup_private(&xy_cd, unit); 724 if (xy == NULL) 725 return ENXIO; 726 727 printf("%s%c: crash dump not supported (yet)\n", 728 device_xname(xy->sc_dev), 'a' + part); 729 730 return ENXIO; 731 732 /* outline: globals: "dumplo" == sector number of partition to start 733 * dump at (convert to physical sector with partition table) 734 * "dumpsize" == size of dump in clicks "physmem" == size of physical 735 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 736 * physmem) 737 * 738 * dump a copy of physical memory to the dump device starting at sector 739 * "dumplo" in the swap partition (make sure > 0). map in pages as 740 * we go. use polled I/O. 741 * 742 * XXX how to handle NON_CONTIG? 743 */ 744 } 745 746 static enum kauth_device_req 747 xy_getkauthreq(u_char cmd) 748 { 749 enum kauth_device_req req; 750 751 switch (cmd) { 752 case XYCMD_WR: 753 case XYCMD_WTH: 754 case XYCMD_WFM: 755 case XYCMD_WRH: 756 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 757 break; 758 759 case XYCMD_RD: 760 case XYCMD_RTH: 761 case XYCMD_RDH: 762 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 763 break; 764 765 case XYCMD_RDS: 766 case XYCMD_MBD: 767 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 768 break; 769 770 case XYCMD_RST: 771 case XYCMD_SDS: 772 case XYCMD_MBL: 773 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 774 break; 775 776 case XYCMD_NOP: 777 case XYCMD_SK: 778 case XYCMD_ST: 779 case XYCMD_R: 780 default: 781 req = 0; 782 break; 783 } 784 785 return req; 786 } 787 788 /* 789 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 790 */ 791 int 792 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 793 { 794 struct xy_softc *xy; 795 struct xd_iocmd *xio; 796 int error, s, unit; 797 798 unit = DISKUNIT(dev); 799 800 xy = device_lookup_private(&xy_cd, unit); 801 if (xy == NULL) 802 return ENXIO; 803 804 /* switch on ioctl type */ 805 806 switch (command) { 807 case DIOCSBAD: /* set bad144 info */ 808 if ((flag & FWRITE) == 0) 809 return EBADF; 810 s = splbio(); 811 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 812 splx(s); 813 return 0; 814 815 case DIOCGDINFO: /* get disk label */ 816 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 817 return 0; 818 819 case DIOCGPART: /* get partition info */ 820 ((struct partinfo *)addr)->disklab = xy->sc_dk.dk_label; 821 ((struct partinfo *)addr)->part = 822 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 823 return 0; 824 825 case DIOCSDINFO: /* set disk label */ 826 if ((flag & FWRITE) == 0) 827 return EBADF; 828 error = setdisklabel(xy->sc_dk.dk_label, 829 (struct disklabel *)addr, /* xy->sc_dk.dk_openmask : */ 0, 830 xy->sc_dk.dk_cpulabel); 831 if (error == 0) { 832 if (xy->state == XY_DRIVE_NOLABEL) 833 xy->state = XY_DRIVE_ONLINE; 834 } 835 return error; 836 837 case DIOCWLABEL: /* change write status of disk label */ 838 if ((flag & FWRITE) == 0) 839 return EBADF; 840 if (*(int *)addr) 841 xy->flags |= XY_WLABEL; 842 else 843 xy->flags &= ~XY_WLABEL; 844 return 0; 845 846 case DIOCWDINFO: /* write disk label */ 847 if ((flag & FWRITE) == 0) 848 return EBADF; 849 error = setdisklabel(xy->sc_dk.dk_label, 850 (struct disklabel *)addr, /* xy->sc_dk.dk_openmask : */ 0, 851 xy->sc_dk.dk_cpulabel); 852 if (error == 0) { 853 if (xy->state == XY_DRIVE_NOLABEL) 854 xy->state = XY_DRIVE_ONLINE; 855 856 /* Simulate opening partition 0 so write succeeds. */ 857 xy->sc_dk.dk_openmask |= (1 << 0); 858 error = writedisklabel(MAKEDISKDEV(major(dev), 859 DISKUNIT(dev), RAW_PART), 860 xystrategy, xy->sc_dk.dk_label, 861 xy->sc_dk.dk_cpulabel); 862 xy->sc_dk.dk_openmask = 863 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 864 } 865 return error; 866 867 case DIOSXDCMD: { 868 enum kauth_device_req req; 869 870 xio = (struct xd_iocmd *)addr; 871 req = xy_getkauthreq(xio->cmd); 872 if ((error = kauth_authorize_device_passthru(l->l_cred, 873 dev, req, xio)) != 0) 874 return error; 875 return xyc_ioctlcmd(xy, dev, xio); 876 } 877 878 default: 879 return ENOTTY; 880 } 881 } 882 883 /* 884 * xyopen: open drive 885 */ 886 int 887 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 888 { 889 int err, unit, part, s; 890 struct xy_softc *xy; 891 892 /* first, could it be a valid target? */ 893 unit = DISKUNIT(dev); 894 xy = device_lookup_private(&xy_cd, unit); 895 if (xy == NULL) 896 return ENXIO; 897 part = DISKPART(dev); 898 err = 0; 899 900 /* 901 * If some other processing is doing init, sleep. 902 */ 903 s = splbio(); 904 while (xy->state == XY_DRIVE_ATTACHING) { 905 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 906 err = EINTR; 907 goto done; 908 } 909 } 910 /* Do we need to init the drive? */ 911 if (xy->state == XY_DRIVE_UNKNOWN) { 912 xy_init(xy); 913 wakeup(&xy->state); 914 } 915 /* Was the init successful? */ 916 if (xy->state == XY_DRIVE_UNKNOWN) { 917 err = EIO; 918 goto done; 919 } 920 921 /* check for partition */ 922 if (part != RAW_PART && 923 (part >= xy->sc_dk.dk_label->d_npartitions || 924 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 925 err = ENXIO; 926 goto done; 927 } 928 929 /* set open masks */ 930 switch (fmt) { 931 case S_IFCHR: 932 xy->sc_dk.dk_copenmask |= (1 << part); 933 break; 934 case S_IFBLK: 935 xy->sc_dk.dk_bopenmask |= (1 << part); 936 break; 937 } 938 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 939 940 done: 941 splx(s); 942 return err; 943 } 944 945 int 946 xyread(dev_t dev, struct uio *uio, int flags) 947 { 948 949 return physio(xystrategy, NULL, dev, B_READ, minphys, uio); 950 } 951 952 int 953 xywrite(dev_t dev, struct uio *uio, int flags) 954 { 955 956 return physio(xystrategy, NULL, dev, B_WRITE, minphys, uio); 957 } 958 959 960 /* 961 * xysize: return size of a partition for a dump 962 */ 963 964 int 965 xysize(dev_t dev) 966 { 967 struct xy_softc *xysc; 968 int unit, part, size, omask; 969 970 /* valid unit? */ 971 unit = DISKUNIT(dev); 972 xysc = device_lookup_private(&xy_cd, unit); 973 if (xysc == NULL) 974 return -1; 975 976 part = DISKPART(dev); 977 omask = xysc->sc_dk.dk_openmask & (1 << part); 978 979 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 980 return -1; 981 982 /* do it */ 983 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 984 size = -1; /* only give valid size for swap partitions */ 985 else 986 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 987 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 988 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 989 return -1; 990 return size; 991 } 992 993 /* 994 * xystrategy: buffering system interface to xy. 995 */ 996 void 997 xystrategy(struct buf *bp) 998 { 999 struct xy_softc *xy; 1000 int s, unit; 1001 struct disklabel *lp; 1002 daddr_t blkno; 1003 1004 unit = DISKUNIT(bp->b_dev); 1005 1006 /* check for live device */ 1007 1008 xy = device_lookup_private(&xy_cd, unit); 1009 if (xy == NULL || 1010 bp->b_blkno < 0 || 1011 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1012 bp->b_error = EINVAL; 1013 goto done; 1014 } 1015 1016 /* There should always be an open first. */ 1017 if (xy->state == XY_DRIVE_UNKNOWN) { 1018 bp->b_error = EIO; 1019 goto done; 1020 } 1021 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1022 /* no I/O to unlabeled disks, unless raw partition */ 1023 bp->b_error = EIO; 1024 goto done; 1025 } 1026 /* short circuit zero length request */ 1027 1028 if (bp->b_bcount == 0) 1029 goto done; 1030 1031 /* check bounds with label (disksubr.c). Determine the size of the 1032 * transfer, and make sure it is within the boundaries of the 1033 * partition. Adjust transfer if needed, and signal errors or early 1034 * completion. */ 1035 1036 lp = xy->sc_dk.dk_label; 1037 1038 if (bounds_check_with_label(&xy->sc_dk, bp, 1039 (xy->flags & XY_WLABEL) != 0) <= 0) 1040 goto done; 1041 1042 /* 1043 * Now convert the block number to absolute and put it in 1044 * terms of the device's logical block size. 1045 */ 1046 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1047 if (DISKPART(bp->b_dev) != RAW_PART) 1048 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1049 1050 bp->b_rawblkno = blkno; 1051 1052 /* 1053 * now we know we have a valid buf structure that we need to do I/O 1054 * on. 1055 */ 1056 1057 s = splbio(); /* protect the queues */ 1058 1059 bufq_put(xy->xyq, bp); /* XXX disksort_cylinder */ 1060 1061 /* start 'em up */ 1062 1063 xyc_start(xy->parent, NULL); 1064 1065 /* done! */ 1066 1067 splx(s); 1068 return; 1069 1070 done: 1071 /* tells upper layers we are done with this buf */ 1072 bp->b_resid = bp->b_bcount; 1073 biodone(bp); 1074 } 1075 /* 1076 * end of {b,c}devsw functions 1077 */ 1078 1079 /* 1080 * i n t e r r u p t f u n c t i o n 1081 * 1082 * xycintr: hardware interrupt. 1083 */ 1084 int 1085 xycintr(void *v) 1086 { 1087 struct xyc_softc *xycsc = v; 1088 1089 /* kick the event counter */ 1090 xycsc->sc_intrcnt.ev_count++; 1091 1092 /* remove as many done IOPBs as possible */ 1093 xyc_remove_iorq(xycsc); 1094 1095 /* start any iorq's already waiting */ 1096 xyc_start(xycsc, NULL); 1097 1098 return 1; 1099 } 1100 /* 1101 * end of interrupt function 1102 */ 1103 1104 /* 1105 * i n t e r n a l f u n c t i o n s 1106 */ 1107 1108 /* 1109 * xyc_rqinit: fill out the fields of an I/O request 1110 */ 1111 1112 inline void 1113 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, 1114 int md, u_long blk, int cnt, void *db, struct buf *bp) 1115 { 1116 1117 rq->xyc = xyc; 1118 rq->xy = xy; 1119 rq->ttl = XYC_MAXTTL + 10; 1120 rq->mode = md; 1121 rq->tries = rq->errno = rq->lasterror = 0; 1122 rq->blockno = blk; 1123 rq->sectcnt = cnt; 1124 rq->dbuf = rq->dbufbase = db; 1125 rq->buf = bp; 1126 } 1127 1128 /* 1129 * xyc_rqtopb: load up an IOPB based on an iorq 1130 */ 1131 1132 void 1133 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1134 { 1135 u_long block, dp; 1136 1137 /* normal IOPB case, standard stuff */ 1138 1139 /* chain bit handled later */ 1140 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1141 iopb->com = cmd; 1142 iopb->errno = 0; 1143 iopb->errs = 0; 1144 iopb->done = 0; 1145 if (iorq->xy) { 1146 iopb->unit = iorq->xy->xy_drive; 1147 iopb->dt = iorq->xy->drive_type; 1148 } else { 1149 iopb->unit = 0; 1150 iopb->dt = 0; 1151 } 1152 block = iorq->blockno; 1153 if (iorq->xy == NULL || block == 0) { 1154 iopb->sect = iopb->head = iopb->cyl = 0; 1155 } else { 1156 iopb->sect = block % iorq->xy->nsect; 1157 block = block / iorq->xy->nsect; 1158 iopb->head = block % iorq->xy->nhead; 1159 block = block / iorq->xy->nhead; 1160 iopb->cyl = block; 1161 } 1162 iopb->scnt = iorq->sectcnt; 1163 if (iorq->dbuf == NULL) { 1164 iopb->dataa = 0; 1165 iopb->datar = 0; 1166 } else { 1167 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1168 iopb->dataa = (dp & 0xffff); 1169 iopb->datar = ((dp & 0xff0000) >> 16); 1170 } 1171 iopb->subfn = subfun; 1172 } 1173 1174 1175 /* 1176 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1177 */ 1178 1179 int 1180 xyc_unbusy(struct xyc *xyc, int del) 1181 { 1182 1183 while (del-- > 0) { 1184 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1185 break; 1186 DELAY(1); 1187 } 1188 return del == 0 ? XY_ERR_FAIL : XY_ERR_AOK; 1189 } 1190 1191 /* 1192 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1193 * note that NORM requests are handled separately. 1194 */ 1195 int 1196 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1197 int scnt, char *dptr, int fullmode) 1198 { 1199 struct xy_iorq *iorq = xycsc->ciorq; 1200 struct xy_iopb *iopb = xycsc->ciopb; 1201 int submode = XY_STATE(fullmode); 1202 1203 /* 1204 * is someone else using the control iopq wait for it if we can 1205 */ 1206 start: 1207 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1208 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1209 return XY_ERR_FAIL; 1210 goto start; 1211 } 1212 1213 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1214 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1215 iorq->mode = XY_SUB_FREE; 1216 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1217 } 1218 1219 /* init iorq/iopb */ 1220 1221 xyc_rqinit(iorq, xycsc, 1222 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1223 fullmode, block, scnt, dptr, NULL); 1224 1225 /* load IOPB from iorq */ 1226 1227 xyc_rqtopb(iorq, iopb, cmd, subfn); 1228 1229 /* submit it for processing */ 1230 1231 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1232 1233 return XY_ERR_AOK; 1234 } 1235 1236 /* 1237 * xyc_startbuf 1238 * start a buffer for running 1239 */ 1240 1241 int 1242 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1243 { 1244 struct xy_iorq *iorq; 1245 struct xy_iopb *iopb; 1246 u_long block; 1247 void *dbuf; 1248 1249 iorq = xysc->xyrq; 1250 iopb = iorq->iopb; 1251 1252 /* get buf */ 1253 1254 if (bp == NULL) 1255 panic("%s null buf", __func__); 1256 1257 #ifdef XYC_DEBUG 1258 int partno = DISKPART(bp->b_dev); 1259 printf("%s: %s%c: %s block %d\n", __func__, device_xname(xysc->sc_dev), 1260 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", 1261 (int)bp->b_blkno); 1262 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1263 bp->b_bcount, bp->b_data); 1264 #endif 1265 1266 /* 1267 * load request. 1268 * 1269 * also, note that there are two kinds of buf structures, those with 1270 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1271 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1272 * buffer which has already been mapped into DVMA space. (Not on sun3) 1273 * However, if B_PHYS is not set, then the buffer is a normal system 1274 * buffer which does *not* live in DVMA space. In that case we call 1275 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1276 * 1277 * in cases where we do a dvma_mapin, note that iorq points to the 1278 * buffer as mapped into DVMA space, where as the bp->b_data points 1279 * to its non-DVMA mapping. 1280 * 1281 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1282 * into dvma space, only that it was remapped into the kernel. 1283 * We ALWAYS have to remap the kernel buf into DVMA space. 1284 * (It is done inexpensively, using whole segments!) 1285 */ 1286 1287 block = bp->b_rawblkno; 1288 1289 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1290 if (dbuf == NULL) { /* out of DVMA space */ 1291 printf("%s: warning: out of DVMA space\n", 1292 device_xname(xycsc->sc_dev)); 1293 return XY_ERR_FAIL; /* XXX: need some sort of 1294 * call-back scheme here? */ 1295 } 1296 1297 /* init iorq and load iopb from it */ 1298 1299 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1300 bp->b_bcount / XYFM_BPS, dbuf, bp); 1301 1302 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1303 1304 /* Instrumentation. */ 1305 disk_busy(&xysc->sc_dk); 1306 1307 return XY_ERR_AOK; 1308 } 1309 1310 1311 /* 1312 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1313 * if ok. if it fail returns an error code. type is XY_SUB_*. 1314 * 1315 * note: caller frees iorq in all cases except NORM 1316 * 1317 * return value: 1318 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1319 * WAIT: XY_AOK (success), <error-code> (failed) 1320 * POLL: <same as WAIT> 1321 * NOQ : <same as NORM> 1322 * 1323 * there are three sources for i/o requests: 1324 * [1] xystrategy: normal block I/O, using "struct buf" system. 1325 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1326 * [3] open/ioctl: these are I/O requests done in the context of a process, 1327 * and the process should block until they are done. 1328 * 1329 * software state is stored in the iorq structure. each iorq has an 1330 * iopb structure. the hardware understands the iopb structure. 1331 * every command must go through an iopb. a 450 handles one iopb at a 1332 * time, where as a 451 can take them in chains. [the 450 claims it 1333 * can handle chains, but is appears to be buggy...] iopb are allocated 1334 * in DVMA space at boot up time. each disk gets one iopb, and the 1335 * controller gets one (for POLL and WAIT commands). what happens if 1336 * the iopb is busy? for i/o type [1], the buffers are queued at the 1337 * "buff" layer and * picked up later by the interrupt routine. for case 1338 * [2] we can only be blocked if there is a WAIT type I/O request being 1339 * run. since this can only happen when we are crashing, we wait a sec 1340 * and then steal the IOPB. for case [3] the process can sleep 1341 * on the iorq free list until some iopbs are available. 1342 */ 1343 1344 int 1345 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1346 { 1347 struct xy_iopb *iopb; 1348 u_long iopbaddr; 1349 1350 #ifdef XYC_DEBUG 1351 printf("%s(%s, addr=0x%x, type=%d)\n", __func__, 1352 device_xname(xycsc->sc_dev), iorq, type); 1353 #endif 1354 1355 /* first check and see if controller is busy */ 1356 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1357 #ifdef XYC_DEBUG 1358 printf("%s: XYC not ready (BUSY)\n", __func__); 1359 #endif 1360 if (type == XY_SUB_NOQ) 1361 return XY_ERR_FAIL; /* failed */ 1362 switch (type) { 1363 case XY_SUB_NORM: 1364 return XY_ERR_AOK; /* success */ 1365 case XY_SUB_WAIT: 1366 while (iorq->iopb->done == 0) { 1367 (void)tsleep(iorq, PRIBIO, "xyciorq", 0); 1368 } 1369 return (iorq->errno); 1370 case XY_SUB_POLL: /* steal controller */ 1371 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1372 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == 1373 XY_ERR_FAIL) 1374 panic("%s: stuck xyc", __func__); 1375 printf("%s: stole controller\n", 1376 device_xname(xycsc->sc_dev)); 1377 break; 1378 default: 1379 panic("%s adding", __func__); 1380 } 1381 } 1382 1383 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1384 if (iopb == NULL) { /* nothing doing? */ 1385 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1386 return XY_ERR_AOK; 1387 panic("xyc_submit_iorq: xyc_chain failed!"); 1388 } 1389 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1390 1391 XYC_GO(xycsc->xyc, iopbaddr); 1392 1393 /* command now running, wrap it up */ 1394 switch (type) { 1395 case XY_SUB_NORM: 1396 case XY_SUB_NOQ: 1397 return XY_ERR_AOK; /* success */ 1398 case XY_SUB_WAIT: 1399 while (iorq->iopb->done == 0) { 1400 (void)tsleep(iorq, PRIBIO, "xyciorq", 0); 1401 } 1402 return iorq->errno; 1403 case XY_SUB_POLL: 1404 return xyc_piodriver(xycsc, iorq); 1405 default: 1406 panic("%s wrap up", __func__); 1407 } 1408 panic("%s impossible", __func__); 1409 return 0; /* not reached */ 1410 } 1411 1412 1413 /* 1414 * xyc_chain: build a chain. return dvma address of first element in 1415 * the chain. iorq != NULL: means we only want that item on the chain. 1416 */ 1417 1418 struct xy_iopb * 1419 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1420 { 1421 int togo, chain, hand; 1422 struct xy_iopb *iopb, *prev_iopb; 1423 1424 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1425 1426 /* 1427 * promote control IOPB to the top 1428 */ 1429 if (iorq == NULL) { 1430 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1431 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1432 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1433 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1434 } 1435 1436 /* 1437 * special case: if iorq != NULL then we have a POLL or WAIT request. 1438 * we let these take priority and do them first. 1439 */ 1440 if (iorq) { 1441 xycsc->xy_chain[0] = iorq; 1442 iorq->iopb->chen = 0; 1443 return iorq->iopb; 1444 } 1445 1446 /* 1447 * NORM case: do round robin and maybe chain (if allowed and possible) 1448 */ 1449 1450 chain = 0; 1451 hand = xycsc->xy_hand; 1452 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1453 1454 for (togo = XYC_MAXIOPB ; togo > 0 ; 1455 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1456 1457 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1458 xycsc->iopbase[hand].done) 1459 continue; /* not ready-for-i/o */ 1460 1461 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1462 iopb = xycsc->xy_chain[chain]->iopb; 1463 iopb->chen = 0; 1464 if (chain != 0) { /* adding a link to a chain? */ 1465 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1466 prev_iopb->chen = 1; 1467 prev_iopb->nxtiopb = 0xffff & 1468 dvma_kvtopa(iopb, xycsc->bustype); 1469 } else { /* head of chain */ 1470 iorq = xycsc->xy_chain[chain]; 1471 } 1472 chain++; 1473 if (xycsc->no_ols) 1474 break; /* quit if chaining dis-allowed */ 1475 } 1476 return iorq ? iorq->iopb : NULL; 1477 } 1478 1479 /* 1480 * xyc_piodriver 1481 * 1482 * programmed i/o driver. this function takes over the computer 1483 * and drains off the polled i/o request. it returns the status of the iorq 1484 * the caller is interesting in. 1485 */ 1486 int 1487 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1488 { 1489 int nreset = 0; 1490 int retval = 0; 1491 u_long res; 1492 1493 #ifdef XYC_DEBUG 1494 printf("%s(%s, 0x%x)\n", __func__, device_xname(xycsc->sc_dev), iorq); 1495 #endif 1496 1497 while (iorq->iopb->done == 0) { 1498 1499 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1500 1501 /* we expect some progress soon */ 1502 if (res == XY_ERR_FAIL && nreset >= 2) { 1503 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1504 #ifdef XYC_DEBUG 1505 printf("%s: timeout\n", __func__); 1506 #endif 1507 return XY_ERR_FAIL; 1508 } 1509 if (res == XY_ERR_FAIL) { 1510 if (xyc_reset(xycsc, 0, 1511 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1512 XY_ERR_FAIL, 0) == XY_ERR_FAIL) 1513 return XY_ERR_FAIL; /* flushes all but POLL 1514 * requests, resets */ 1515 continue; 1516 } 1517 1518 xyc_remove_iorq(xycsc); /* may resubmit request */ 1519 1520 if (iorq->iopb->done == 0) 1521 xyc_start(xycsc, iorq); 1522 } 1523 1524 /* get return value */ 1525 1526 retval = iorq->errno; 1527 1528 #ifdef XYC_DEBUG 1529 printf("%s: done, retval = 0x%x (%s)\n", __func__, 1530 iorq->errno, xyc_e2str(iorq->errno)); 1531 #endif 1532 1533 /* start up any bufs that have queued */ 1534 1535 xyc_start(xycsc, NULL); 1536 1537 return retval; 1538 } 1539 1540 /* 1541 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1542 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1543 */ 1544 void 1545 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1546 { 1547 struct xy_iopb tmpiopb; 1548 u_long addr; 1549 int del; 1550 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1551 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1552 xycsc->ciopb->ien = 0; 1553 xycsc->ciopb->com = XYCMD_RST; 1554 xycsc->ciopb->unit = xysc->xy_drive; 1555 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1556 1557 XYC_GO(xycsc->xyc, addr); 1558 1559 del = XYC_RESETUSEC; 1560 while (del > 0) { 1561 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1562 break; 1563 DELAY(1); 1564 del--; 1565 } 1566 1567 if (del <= 0 || xycsc->ciopb->errs) { 1568 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1569 xyc_e2str(xycsc->ciopb->errno)); 1570 del = xycsc->xyc->xyc_rsetup; 1571 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1572 panic("%s", __func__); 1573 } else { 1574 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1575 } 1576 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1577 } 1578 1579 1580 /* 1581 * xyc_reset: reset everything: requests are marked as errors except 1582 * a polled request (which is resubmitted) 1583 */ 1584 int 1585 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1586 int error, struct xy_softc *xysc) 1587 { 1588 int del = 0, lcv, retval = XY_ERR_AOK; 1589 struct xy_iorq *iorq; 1590 1591 /* soft reset hardware */ 1592 1593 if (quiet == 0) 1594 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1595 del = xycsc->xyc->xyc_rsetup; 1596 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1597 if (del == XY_ERR_FAIL) { 1598 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1599 retval = XY_ERR_FAIL; 1600 } 1601 if (xysc) 1602 xyc_xyreset(xycsc, xysc); 1603 1604 /* fix queues based on "blast-mode" */ 1605 1606 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1607 iorq = &xycsc->reqs[lcv]; 1608 1609 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1610 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1611 XY_STATE(iorq->mode) != XY_SUB_NORM) 1612 /* is it active? */ 1613 continue; 1614 1615 if (blastmode == XY_RSET_ALL || 1616 blastmode != iorq) { 1617 /* failed */ 1618 iorq->errno = error; 1619 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1620 switch (XY_STATE(iorq->mode)) { 1621 case XY_SUB_NORM: 1622 iorq->buf->b_error = EIO; 1623 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1624 /* Sun3: map/unmap regardless of B_PHYS */ 1625 dvma_mapout(iorq->dbufbase, 1626 iorq->buf->b_bcount); 1627 (void)bufq_get(iorq->xy->xyq); 1628 disk_unbusy(&iorq->xy->sc_dk, 1629 (iorq->buf->b_bcount - iorq->buf->b_resid), 1630 (iorq->buf->b_flags & B_READ)); 1631 biodone(iorq->buf); 1632 iorq->mode = XY_SUB_FREE; 1633 break; 1634 case XY_SUB_WAIT: 1635 wakeup(iorq); 1636 case XY_SUB_POLL: 1637 iorq->mode = 1638 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1639 break; 1640 } 1641 1642 } else { 1643 1644 /* resubmit, no need to do anything here */ 1645 } 1646 } 1647 1648 /* 1649 * now, if stuff is waiting, start it. 1650 * since we just reset it should go 1651 */ 1652 xyc_start(xycsc, NULL); 1653 1654 return retval; 1655 } 1656 1657 /* 1658 * xyc_start: start waiting buffers 1659 */ 1660 1661 void 1662 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1663 { 1664 int lcv; 1665 struct xy_softc *xy; 1666 1667 if (iorq == NULL) { 1668 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1669 if ((xy = xycsc->sc_drives[lcv]) == NULL) 1670 continue; 1671 if (bufq_peek(xy->xyq) == NULL) 1672 continue; 1673 if (xy->xyrq->mode != XY_SUB_FREE) 1674 continue; 1675 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1676 } 1677 } 1678 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1679 } 1680 1681 /* 1682 * xyc_remove_iorq: remove "done" IOPB's. 1683 */ 1684 1685 int 1686 xyc_remove_iorq(struct xyc_softc *xycsc) 1687 { 1688 int errno, rq, comm, errs; 1689 struct xyc *xyc = xycsc->xyc; 1690 u_long addr; 1691 struct xy_iopb *iopb; 1692 struct xy_iorq *iorq; 1693 struct buf *bp; 1694 1695 if (xyc->xyc_csr & XYC_DERR) { 1696 /* 1697 * DOUBLE ERROR: should never happen under normal use. This 1698 * error is so bad, you can't even tell which IOPB is bad, so 1699 * we dump them all. 1700 */ 1701 errno = XY_ERR_DERR; 1702 printf("%s: DOUBLE ERROR!\n", device_xname(xycsc->sc_dev)); 1703 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1704 printf("%s: soft reset failed!\n", 1705 device_xname(xycsc->sc_dev)); 1706 panic("%s: controller DEAD", __func__); 1707 } 1708 return XY_ERR_AOK; 1709 } 1710 1711 /* 1712 * get iopb that is done, loop down the chain 1713 */ 1714 1715 if (xyc->xyc_csr & XYC_ERR) { 1716 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1717 } 1718 if (xyc->xyc_csr & XYC_IPND) { 1719 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1720 } 1721 1722 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1723 iorq = xycsc->xy_chain[rq]; 1724 if (iorq == NULL) break; /* done ! */ 1725 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1726 continue; /* free, or done */ 1727 iopb = iorq->iopb; 1728 if (iopb->done == 0) 1729 continue; /* not done yet */ 1730 1731 comm = iopb->com; 1732 errs = iopb->errs; 1733 1734 if (errs) 1735 iorq->errno = iopb->errno; 1736 else 1737 iorq->errno = 0; 1738 1739 /* handle non-fatal errors */ 1740 1741 if (errs && 1742 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1743 continue; /* AOK: we resubmitted it */ 1744 1745 1746 /* this iorq is now done (hasn't been restarted or anything) */ 1747 1748 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1749 xyc_perror(iorq, iopb, 0); 1750 1751 /* now, if read/write check to make sure we got all the data 1752 * we needed. (this may not be the case if we got an error in 1753 * the middle of a multisector request). */ 1754 1755 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1756 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1757 /* we just successfully processed a bad144 sector 1758 * note: if we are in bad 144 mode, the pointers have 1759 * been advanced already (see above) and are pointing 1760 * at the bad144 sector. to exit bad144 mode, we 1761 * must advance the pointers 1 sector and issue a new 1762 * request if there are still sectors left to process 1763 * 1764 */ 1765 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1766 1767 /* exit b144 mode */ 1768 iorq->mode = iorq->mode & (~XY_MODE_B144); 1769 1770 if (iorq->sectcnt) { /* more to go! */ 1771 iorq->lasterror = iorq->errno = iopb->errno = 0; 1772 iopb->errs = iopb->done = 0; 1773 iorq->tries = 0; 1774 iopb->scnt = iorq->sectcnt; 1775 iopb->cyl = 1776 iorq->blockno / iorq->xy->sectpercyl; 1777 iopb->head = 1778 (iorq->blockno / iorq->xy->nhead) % 1779 iorq->xy->nhead; 1780 iopb->sect = iorq->blockno % XYFM_BPS; 1781 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1782 iopb->dataa = (addr & 0xffff); 1783 iopb->datar = ((addr & 0xff0000) >> 16); 1784 /* will resubit at end */ 1785 continue; 1786 } 1787 } 1788 /* final cleanup, totally done with this request */ 1789 1790 switch (XY_STATE(iorq->mode)) { 1791 case XY_SUB_NORM: 1792 bp = iorq->buf; 1793 if (errs) { 1794 bp->b_error = EIO; 1795 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1796 } else { 1797 bp->b_resid = 0; /* done */ 1798 } 1799 /* Sun3: map/unmap regardless of B_PHYS */ 1800 dvma_mapout(iorq->dbufbase, iorq->buf->b_bcount); 1801 (void)bufq_get(iorq->xy->xyq); 1802 disk_unbusy(&iorq->xy->sc_dk, 1803 (bp->b_bcount - bp->b_resid), 1804 (bp->b_flags & B_READ)); 1805 iorq->mode = XY_SUB_FREE; 1806 biodone(bp); 1807 break; 1808 case XY_SUB_WAIT: 1809 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1810 wakeup(iorq); 1811 break; 1812 case XY_SUB_POLL: 1813 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1814 break; 1815 } 1816 } 1817 1818 return XY_ERR_AOK; 1819 } 1820 1821 /* 1822 * xyc_perror: print error. 1823 * - if still_trying is true: we got an error, retried and got a 1824 * different error. in that case lasterror is the old error, 1825 * and errno is the new one. 1826 * - if still_trying is not true, then if we ever had an error it 1827 * is in lasterror. also, if iorq->errno == 0, then we recovered 1828 * from that error (otherwise iorq->errno == iorq->lasterror). 1829 */ 1830 void 1831 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1832 { 1833 int error = iorq->lasterror; 1834 1835 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 1836 : device_xname(iorq->xyc->sc_dev)); 1837 if (iorq->buf) 1838 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 1839 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1840 printf("%s %d/%d/%d: ", 1841 (iopb->com == XYCMD_RD) ? "read" : "write", 1842 iopb->cyl, iopb->head, iopb->sect); 1843 printf("%s", xyc_e2str(error)); 1844 1845 if (still_trying) 1846 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1847 else 1848 if (iorq->errno == 0) 1849 printf(" [recovered in %d tries]", iorq->tries); 1850 1851 printf("\n"); 1852 } 1853 1854 /* 1855 * xyc_error: non-fatal error encountered... recover. 1856 * return AOK if resubmitted, return FAIL if this iopb is done 1857 */ 1858 int 1859 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 1860 int comm) 1861 { 1862 int errno = iorq->errno; 1863 int erract = xyc_entoact(errno); 1864 int oldmode, advance, i; 1865 1866 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1867 oldmode = iorq->mode; 1868 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1869 /* make xyc_start ignore us */ 1870 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1871 iorq->mode = oldmode; 1872 } 1873 /* check for read/write to a sector in bad144 table if bad: redirect 1874 * request to bad144 area */ 1875 1876 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1877 (iorq->mode & XY_MODE_B144) == 0) { 1878 advance = iorq->sectcnt - iopb->scnt; 1879 XYC_ADVANCE(iorq, advance); 1880 if ((i = isbad(&iorq->xy->dkb, 1881 iorq->blockno / iorq->xy->sectpercyl, 1882 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1883 iorq->blockno % iorq->xy->nsect)) != -1) { 1884 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1885 * redirect */ 1886 iopb->errno = iopb->done = iopb->errs = 0; 1887 iopb->scnt = 1; 1888 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1889 /* second to last acyl */ 1890 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1891 * standard */ 1892 iopb->head = i / iorq->xy->nhead; 1893 iopb->sect = i % iorq->xy->nhead; 1894 /* will resubmit when we come out of remove_iorq */ 1895 return XY_ERR_AOK; /* recovered! */ 1896 } 1897 } 1898 1899 /* 1900 * it isn't a bad144 sector, must be real error! see if we can retry 1901 * it? 1902 */ 1903 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1904 xyc_perror(iorq, iopb, 1); /* inform of error state 1905 * change */ 1906 iorq->lasterror = errno; 1907 1908 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1909 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1910 iorq->tries++; 1911 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1912 /* will resubmit at end of remove_iorq */ 1913 return XY_ERR_AOK; /* recovered! */ 1914 } 1915 1916 /* failed to recover from this error */ 1917 return XY_ERR_FAIL; 1918 } 1919 1920 /* 1921 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1922 */ 1923 void 1924 xyc_tick(void *arg) 1925 { 1926 struct xyc_softc *xycsc = arg; 1927 int lcv, s, reset = 0; 1928 1929 /* reduce ttl for each request if one goes to zero, reset xyc */ 1930 s = splbio(); 1931 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1932 if (xycsc->reqs[lcv].mode == 0 || 1933 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1934 continue; 1935 xycsc->reqs[lcv].ttl--; 1936 if (xycsc->reqs[lcv].ttl == 0) 1937 reset = 1; 1938 } 1939 if (reset) { 1940 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 1941 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1942 } 1943 splx(s); 1944 1945 /* until next time */ 1946 1947 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1948 } 1949 1950 /* 1951 * xyc_ioctlcmd: this function provides a user level interface to the 1952 * controller via ioctl. this allows "format" programs to be written 1953 * in user code, and is also useful for some debugging. we return 1954 * an error code. called at user priority. 1955 * 1956 * XXX missing a few commands (see the 7053 driver for ideas) 1957 */ 1958 int 1959 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 1960 { 1961 int s, err, rqno; 1962 void *dvmabuf = NULL; 1963 struct xyc_softc *xycsc; 1964 1965 /* check sanity of requested command */ 1966 1967 switch (xio->cmd) { 1968 1969 case XYCMD_NOP: /* no op: everything should be zero */ 1970 if (xio->subfn || xio->dptr || xio->dlen || 1971 xio->block || xio->sectcnt) 1972 return EINVAL; 1973 break; 1974 1975 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1976 case XYCMD_WR: 1977 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1978 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1979 return EINVAL; 1980 break; 1981 1982 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1983 return EINVAL; 1984 break; 1985 1986 default: 1987 return EINVAL;/* ??? */ 1988 } 1989 1990 /* create DVMA buffer for request if needed */ 1991 1992 if (xio->dlen) { 1993 dvmabuf = dvma_malloc(xio->dlen); 1994 if (xio->cmd == XYCMD_WR) { 1995 err = copyin(xio->dptr, dvmabuf, xio->dlen); 1996 if (err) { 1997 dvma_free(dvmabuf, xio->dlen); 1998 return err; 1999 } 2000 } 2001 } 2002 /* do it! */ 2003 2004 err = 0; 2005 xycsc = xy->parent; 2006 s = splbio(); 2007 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2008 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2009 if (rqno == XY_ERR_FAIL) { 2010 err = EIO; 2011 goto done; 2012 } 2013 xio->errno = xycsc->ciorq->errno; 2014 xio->tries = xycsc->ciorq->tries; 2015 XYC_DONE(xycsc, err); 2016 2017 if (xio->cmd == XYCMD_RD) 2018 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2019 2020 done: 2021 splx(s); 2022 if (dvmabuf) 2023 dvma_free(dvmabuf, xio->dlen); 2024 return err; 2025 } 2026 2027 /* 2028 * xyc_e2str: convert error code number into an error string 2029 */ 2030 const char * 2031 xyc_e2str(int no) 2032 { 2033 switch (no) { 2034 case XY_ERR_FAIL: 2035 return "Software fatal error"; 2036 case XY_ERR_DERR: 2037 return "DOUBLE ERROR"; 2038 case XY_ERR_AOK: 2039 return "Successful completion"; 2040 case XY_ERR_IPEN: 2041 return "Interrupt pending"; 2042 case XY_ERR_BCFL: 2043 return "Busy conflict"; 2044 case XY_ERR_TIMO: 2045 return "Operation timeout"; 2046 case XY_ERR_NHDR: 2047 return "Header not found"; 2048 case XY_ERR_HARD: 2049 return "Hard ECC error"; 2050 case XY_ERR_ICYL: 2051 return "Illegal cylinder address"; 2052 case XY_ERR_ISEC: 2053 return "Illegal sector address"; 2054 case XY_ERR_SMAL: 2055 return "Last sector too small"; 2056 case XY_ERR_SACK: 2057 return "Slave ACK error (non-existent memory)"; 2058 case XY_ERR_CHER: 2059 return "Cylinder and head/header error"; 2060 case XY_ERR_SRTR: 2061 return "Auto-seek retry successful"; 2062 case XY_ERR_WPRO: 2063 return "Write-protect error"; 2064 case XY_ERR_UIMP: 2065 return "Unimplemented command"; 2066 case XY_ERR_DNRY: 2067 return "Drive not ready"; 2068 case XY_ERR_SZER: 2069 return "Sector count zero"; 2070 case XY_ERR_DFLT: 2071 return "Drive faulted"; 2072 case XY_ERR_ISSZ: 2073 return "Illegal sector size"; 2074 case XY_ERR_SLTA: 2075 return "Self test A"; 2076 case XY_ERR_SLTB: 2077 return "Self test B"; 2078 case XY_ERR_SLTC: 2079 return "Self test C"; 2080 case XY_ERR_SOFT: 2081 return "Soft ECC error"; 2082 case XY_ERR_SFOK: 2083 return "Soft ECC error recovered"; 2084 case XY_ERR_IHED: 2085 return "Illegal head"; 2086 case XY_ERR_DSEQ: 2087 return "Disk sequencer error"; 2088 case XY_ERR_SEEK: 2089 return "Seek error"; 2090 default: 2091 return "Unknown error"; 2092 } 2093 } 2094 2095 int 2096 xyc_entoact(int errno) 2097 { 2098 2099 switch (errno) { 2100 case XY_ERR_FAIL: 2101 case XY_ERR_DERR: 2102 case XY_ERR_IPEN: 2103 case XY_ERR_BCFL: 2104 case XY_ERR_ICYL: 2105 case XY_ERR_ISEC: 2106 case XY_ERR_UIMP: 2107 case XY_ERR_SZER: 2108 case XY_ERR_ISSZ: 2109 case XY_ERR_SLTA: 2110 case XY_ERR_SLTB: 2111 case XY_ERR_SLTC: 2112 case XY_ERR_IHED: 2113 case XY_ERR_SACK: 2114 case XY_ERR_SMAL: 2115 return XY_ERA_PROG; /* program error ! */ 2116 2117 case XY_ERR_TIMO: 2118 case XY_ERR_NHDR: 2119 case XY_ERR_HARD: 2120 case XY_ERR_DNRY: 2121 case XY_ERR_CHER: 2122 case XY_ERR_SEEK: 2123 case XY_ERR_SOFT: 2124 return XY_ERA_HARD; /* hard error, retry */ 2125 2126 case XY_ERR_DFLT: 2127 case XY_ERR_DSEQ: 2128 return XY_ERA_RSET; /* hard error reset */ 2129 2130 case XY_ERR_SRTR: 2131 case XY_ERR_SFOK: 2132 case XY_ERR_AOK: 2133 return XY_ERA_SOFT; /* an FYI error */ 2134 2135 case XY_ERR_WPRO: 2136 return XY_ERA_WPRO; /* write protect */ 2137 } 2138 2139 return XY_ERA_PROG; /* ??? */ 2140 } 2141