xy.c revision 1.70
1 /* $NetBSD: xy.c,v 1.70 2009/01/12 08:27:26 cegger Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * id: &Id: xy.c,v 1.1 1995/09/25 20:35:14 chuck Exp & 40 * started: 14-Sep-95 41 * references: [1] Xylogics Model 753 User's Manual 42 * part number: 166-753-001, Revision B, May 21, 1988. 43 * "Your Partner For Performance" 44 * [2] other NetBSD disk device drivers 45 * [3] Xylogics Model 450 User's Manual 46 * part number: 166-017-001, Revision B, 1983. 47 * [4] Addendum to Xylogics Model 450 Disk Controller User's 48 * Manual, Jan. 1985. 49 * [5] The 451 Controller, Rev. B3, September 2, 1986. 50 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 51 * 52 */ 53 54 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.70 2009/01/12 08:27:26 cegger Exp $"); 56 57 #undef XYC_DEBUG /* full debug */ 58 #undef XYC_DIAG /* extra sanity checks */ 59 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 60 #define XYC_DIAG /* link in with master DIAG option */ 61 #endif 62 63 #include <sys/param.h> 64 #include <sys/proc.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/file.h> 68 #include <sys/stat.h> 69 #include <sys/ioctl.h> 70 #include <sys/buf.h> 71 #include <sys/bufq.h> 72 #include <sys/uio.h> 73 #include <sys/malloc.h> 74 #include <sys/device.h> 75 #include <sys/disklabel.h> 76 #include <sys/disk.h> 77 #include <sys/syslog.h> 78 #include <sys/dkbad.h> 79 #include <sys/conf.h> 80 #include <sys/kauth.h> 81 82 #include <uvm/uvm_extern.h> 83 84 #include <dev/sun/disklabel.h> 85 86 #include <machine/autoconf.h> 87 #include <machine/dvma.h> 88 89 #include <sun3/dev/xyreg.h> 90 #include <sun3/dev/xyvar.h> 91 #include <sun3/dev/xio.h> 92 93 #include "ioconf.h" 94 #include "locators.h" 95 96 /* 97 * Print a complaint when no xy children were specified 98 * in the config file. Better than a link error... 99 * 100 * XXX: Some folks say this driver should be split in two, 101 * but that seems pointless with ONLY one type of child. 102 */ 103 #include "xy.h" 104 #if NXY == 0 105 #error "xyc but no xy?" 106 #endif 107 108 /* 109 * macros 110 */ 111 112 /* 113 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 114 */ 115 #define XYC_GO(XYC, ADDR) \ 116 do { \ 117 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 118 (ADDR) = ((ADDR) >> 8); \ 119 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 120 (ADDR) = ((ADDR) >> 8); \ 121 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 122 (ADDR) = ((ADDR) >> 8); \ 123 (XYC)->xyc_reloc_hi = (ADDR); \ 124 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 125 } while (/* CONSTCOND */ 0) 126 127 /* 128 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 129 */ 130 131 #define XYC_DONE(SC,ER) \ 132 do { \ 133 if ((ER) == XY_ERR_AOK) { \ 134 (ER) = (SC)->ciorq->errno; \ 135 (SC)->ciorq->mode = XY_SUB_FREE; \ 136 wakeup((SC)->ciorq); \ 137 } \ 138 } while (/* CONSTCOND */ 0) 139 140 /* 141 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 142 */ 143 144 #define XYC_ADVANCE(IORQ, N) \ 145 do { \ 146 if (N) { \ 147 (IORQ)->sectcnt -= (N); \ 148 (IORQ)->blockno += (N); \ 149 (IORQ)->dbuf += ((N) * XYFM_BPS); \ 150 } \ 151 } while (/* CONSTCOND */ 0) 152 153 /* 154 * note - addresses you can sleep on: 155 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 156 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 157 */ 158 159 160 /* 161 * function prototypes 162 * "xyc_*" functions are internal, all others are external interfaces 163 */ 164 165 /* internals */ 166 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 167 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 168 const char *xyc_e2str(int); 169 int xyc_entoact(int); 170 int xyc_error(struct xyc_softc *, struct xy_iorq *, struct xy_iopb *, int); 171 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 172 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 173 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 174 int xyc_remove_iorq(struct xyc_softc *); 175 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 176 struct xy_softc *); 177 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, struct xy_softc *, 178 int, u_long, int, void *, struct buf *); 179 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 180 void xyc_start(struct xyc_softc *, struct xy_iorq *); 181 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 182 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 183 void xyc_tick(void *); 184 int xyc_unbusy(struct xyc *, int); 185 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 186 187 /* machine interrupt hook */ 188 int xycintr(void *); 189 190 /* autoconf */ 191 static int xycmatch(device_t, cfdata_t, void *); 192 static void xycattach(device_t, device_t, void *); 193 static int xyc_print(void *, const char *); 194 195 static int xymatch(device_t, cfdata_t, void *); 196 static void xyattach(device_t, device_t, void *); 197 static void xy_init(struct xy_softc *); 198 199 static void xydummystrat(struct buf *); 200 int xygetdisklabel(struct xy_softc *, void *); 201 202 /* 203 * cfattach's: device driver interface to autoconfig 204 */ 205 206 CFATTACH_DECL_NEW(xyc, sizeof(struct xyc_softc), 207 xycmatch, xycattach, NULL, NULL); 208 209 CFATTACH_DECL_NEW(xy, sizeof(struct xy_softc), 210 xymatch, xyattach, NULL, NULL); 211 212 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 213 int driveno; /* unit number */ 214 }; 215 216 dev_type_open(xyopen); 217 dev_type_close(xyclose); 218 dev_type_read(xyread); 219 dev_type_write(xywrite); 220 dev_type_ioctl(xyioctl); 221 dev_type_strategy(xystrategy); 222 dev_type_dump(xydump); 223 dev_type_size(xysize); 224 225 const struct bdevsw xy_bdevsw = { 226 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 227 }; 228 229 const struct cdevsw xy_cdevsw = { 230 xyopen, xyclose, xyread, xywrite, xyioctl, 231 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 232 }; 233 234 /* 235 * dkdriver 236 */ 237 238 struct dkdriver xydkdriver = { xystrategy }; 239 240 /* 241 * start: disk label fix code (XXX) 242 */ 243 244 static void *xy_labeldata; 245 246 static void 247 xydummystrat(struct buf *bp) 248 { 249 250 if (bp->b_bcount != XYFM_BPS) 251 panic("%s: b_bcount", __func__); 252 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 253 bp->b_oflags |= BO_DONE; 254 bp->b_cflags &= ~BC_BUSY; 255 } 256 257 int 258 xygetdisklabel(struct xy_softc *xy, void *b) 259 { 260 const char *err; 261 struct sun_disklabel *sdl; 262 263 /* We already have the label data in `b'; setup for dummy strategy */ 264 xy_labeldata = b; 265 266 /* Required parameter for readdisklabel() */ 267 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 268 269 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 270 xydummystrat, xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 271 if (err) { 272 printf("%s: %s\n", device_xname(xy->sc_dev), err); 273 return XY_ERR_FAIL; 274 } 275 276 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 277 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 278 if (sdl->sl_magic == SUN_DKMAGIC) 279 xy->pcyl = sdl->sl_pcyl; 280 else { 281 printf("%s: WARNING: no `pcyl' in disk label.\n", 282 device_xname(xy->sc_dev)); 283 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 284 xy->sc_dk.dk_label->d_acylinders; 285 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 286 device_xname(xy->sc_dev), xy->pcyl); 287 } 288 289 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 290 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 291 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 292 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 293 xy->sectpercyl = xy->nhead * xy->nsect; 294 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 295 * sun->bsd */ 296 return XY_ERR_AOK; 297 } 298 299 /* 300 * end: disk label fix code (XXX) 301 */ 302 303 /* 304 * a u t o c o n f i g f u n c t i o n s 305 */ 306 307 /* 308 * xycmatch: determine if xyc is present or not. we do a 309 * soft reset to detect the xyc. 310 */ 311 static int 312 xycmatch(device_t parent, cfdata_t cf, void *aux) 313 { 314 struct confargs *ca = aux; 315 316 /* No default VME address. */ 317 if (ca->ca_paddr == -1) 318 return 0; 319 320 /* Make sure something is there... */ 321 if (bus_peek(ca->ca_bustype, ca->ca_paddr + 5, 1) == -1) 322 return 0; 323 324 /* Default interrupt priority. */ 325 if (ca->ca_intpri == -1) 326 ca->ca_intpri = 2; 327 328 return 1; 329 } 330 331 /* 332 * xycattach: attach controller 333 */ 334 static void 335 xycattach(device_t parent, device_t self, void *aux) 336 { 337 struct xyc_softc *xyc = device_private(self); 338 struct confargs *ca = aux; 339 struct xyc_attach_args xa; 340 int lcv, err, res, pbsz; 341 void *tmp, *tmp2; 342 u_long ultmp; 343 344 /* get addressing and intr level stuff from autoconfig and load it 345 * into our xyc_softc. */ 346 347 xyc->sc_dev = self; 348 xyc->xyc = (struct xyc *)bus_mapin(ca->ca_bustype, ca->ca_paddr, 349 sizeof(struct xyc)); 350 xyc->bustype = ca->ca_bustype; 351 xyc->ipl = ca->ca_intpri; 352 xyc->vector = ca->ca_intvec; 353 xyc->no_ols = 0; /* XXX should be from config */ 354 355 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 356 xyc->sc_drives[lcv] = NULL; 357 358 /* 359 * allocate and zero buffers 360 * check boundaries of the KVA's ... all IOPBs must reside in 361 * the same 64K region. 362 */ 363 364 pbsz = XYC_MAXIOPB * sizeof(struct xy_iopb); 365 tmp = tmp2 = (struct xy_iopb *)dvma_malloc(pbsz); /* KVA */ 366 ultmp = (u_long)tmp; 367 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 368 tmp = (struct xy_iopb *)dvma_malloc(pbsz); /* retry! */ 369 dvma_free(tmp2, pbsz); 370 ultmp = (u_long) tmp; 371 if ((ultmp & 0xffff0000) != ((ultmp + pbsz) & 0xffff0000)) { 372 aprint_error(": can't alloc IOPB mem in 64K\n"); 373 return; 374 } 375 } 376 memset(tmp, 0, pbsz); 377 xyc->iopbase = tmp; 378 xyc->dvmaiopb = 379 (struct xy_iopb *)dvma_kvtopa(xyc->iopbase, xyc->bustype); 380 xyc->reqs = malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 381 M_DEVBUF, M_NOWAIT | M_ZERO); 382 if (xyc->reqs == NULL) 383 panic("xyc malloc"); 384 385 /* 386 * init iorq to iopb pointers, and non-zero fields in the 387 * iopb which never change. 388 */ 389 390 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 391 xyc->xy_chain[lcv] = NULL; 392 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 393 xyc->iopbase[lcv].asr = 1; /* always the same */ 394 xyc->iopbase[lcv].eef = 1; /* always the same */ 395 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 396 xyc->iopbase[lcv].aud = 1; /* always the same */ 397 xyc->iopbase[lcv].relo = 1; /* always the same */ 398 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 399 } 400 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 401 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 402 xyc->xy_hand = 0; 403 404 /* read controller parameters and insure we have a 450/451 */ 405 406 err = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 407 res = xyc->ciopb->ctyp; 408 XYC_DONE(xyc, err); 409 if (res != XYCT_450) { 410 if (err) 411 aprint_error(": %s: ", xyc_e2str(err)); 412 aprint_error(": doesn't identify as a 450/451\n"); 413 return; 414 } 415 aprint_normal(": Xylogics 450/451"); 416 if (xyc->no_ols) 417 /* 450 doesn't overlap seek right */ 418 aprint_normal(" [OLS disabled]"); 419 aprint_normal("\n"); 420 if (err) { 421 aprint_error_dev(self, "error: %s\n", xyc_e2str(err)); 422 return; 423 } 424 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 425 aprint_error_dev(self, "24 bit addressing turned off\n"); 426 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 427 printf("to enable 24 bit mode and this driver\n"); 428 return; 429 } 430 431 /* link in interrupt with higher level software */ 432 isr_add_vectored(xycintr, xyc, ca->ca_intpri, ca->ca_intvec); 433 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 434 device_xname(self), "intr"); 435 436 callout_init(&xyc->sc_tick_ch, 0); 437 438 /* now we must look for disks using autoconfig */ 439 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 440 (void)config_found(self, (void *)&xa, xyc_print); 441 442 /* start the watchdog clock */ 443 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 444 } 445 446 static int 447 xyc_print(void *aux, const char *name) 448 { 449 struct xyc_attach_args *xa = aux; 450 451 if (name != NULL) 452 aprint_normal("%s: ", name); 453 454 if (xa->driveno != -1) 455 aprint_normal(" drive %d", xa->driveno); 456 457 return UNCONF; 458 } 459 460 /* 461 * xymatch: probe for disk. 462 * 463 * note: we almost always say disk is present. this allows us to 464 * spin up and configure a disk after the system is booted (we can 465 * call xyattach!). Also, wire down the relationship between the 466 * xy* and xyc* devices, to simplify boot device identification. 467 */ 468 static int 469 xymatch(device_t parent, cfdata_t cf, void *aux) 470 { 471 struct xyc_attach_args *xa = aux; 472 int xy_unit; 473 474 /* Match only on the "wired-down" controller+disk. */ 475 xy_unit = device_unit(parent) * 2 + xa->driveno; 476 if (cf->cf_unit != xy_unit) 477 return 0; 478 479 return 1; 480 } 481 482 /* 483 * xyattach: attach a disk. 484 */ 485 static void 486 xyattach(device_t parent, device_t self, void *aux) 487 { 488 struct xy_softc *xy = device_private(self); 489 struct xyc_softc *xyc = device_private(parent); 490 struct xyc_attach_args *xa = aux; 491 492 xy->sc_dev = self; 493 aprint_normal("\n"); 494 495 /* 496 * Always re-initialize the disk structure. We want statistics 497 * to start with a clean slate. 498 */ 499 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 500 disk_init(&xy->sc_dk, device_xname(self), &xydkdriver); 501 502 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 503 xy->flags = 0; 504 xy->parent = xyc; 505 506 /* init queue of waiting bufs */ 507 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 508 xy->xyrq = &xyc->reqs[xa->driveno]; 509 510 xy->xy_drive = xa->driveno; 511 xyc->sc_drives[xa->driveno] = xy; 512 513 /* Do init work common to attach and open. */ 514 xy_init(xy); 515 } 516 517 /* 518 * end of autoconfig functions 519 */ 520 521 /* 522 * Initialize a disk. This can be called from both autoconf and 523 * also from xyopen/xystrategy. 524 */ 525 static void 526 xy_init(struct xy_softc *xy) 527 { 528 struct xyc_softc *xyc; 529 struct dkbad *dkb; 530 void *dvmabuf; 531 int err, spt, mb, blk, lcv, fullmode, newstate; 532 533 xyc = xy->parent; 534 xy->state = XY_DRIVE_ATTACHING; 535 newstate = XY_DRIVE_UNKNOWN; 536 fullmode = (cold) ? XY_SUB_POLL : XY_SUB_WAIT; 537 dvmabuf = dvma_malloc(XYFM_BPS); 538 539 /* first try and reset the drive */ 540 541 err = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fullmode); 542 XYC_DONE(xyc, err); 543 if (err == XY_ERR_DNRY) { 544 printf("%s: drive %d: off-line\n", 545 device_xname(xy->sc_dev), xy->xy_drive); 546 goto done; 547 } 548 if (err) { 549 printf("%s: ERROR 0x%02x (%s)\n", 550 device_xname(xy->sc_dev), err, xyc_e2str(err)); 551 goto done; 552 } 553 printf("%s: drive %d ready", 554 device_xname(xy->sc_dev), xy->xy_drive); 555 556 /* 557 * now set drive parameters (to semi-bogus values) so we can read the 558 * disk label. 559 */ 560 xy->pcyl = xy->ncyl = 1; 561 xy->acyl = 0; 562 xy->nhead = 1; 563 xy->nsect = 1; 564 xy->sectpercyl = 1; 565 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 566 xy->dkb.bt_bad[lcv].bt_cyl = 567 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 568 569 /* read disk label */ 570 for (xy->drive_type = 0; xy->drive_type <= XYC_MAXDT; 571 xy->drive_type++) { 572 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 573 dvmabuf, fullmode); 574 XYC_DONE(xyc, err); 575 if (err == XY_ERR_AOK) 576 break; 577 } 578 579 if (err != XY_ERR_AOK) { 580 printf("%s: reading disk label failed: %s\n", 581 device_xname(xy->sc_dev), xyc_e2str(err)); 582 goto done; 583 } 584 printf("%s: drive type %d\n", 585 device_xname(xy->sc_dev), xy->drive_type); 586 587 newstate = XY_DRIVE_NOLABEL; 588 589 xy->hw_spt = spt = 0; /* XXX needed ? */ 590 /* Attach the disk: must be before getdisklabel to malloc label */ 591 disk_attach(&xy->sc_dk); 592 593 if (xygetdisklabel(xy, dvmabuf) != XY_ERR_AOK) 594 goto done; 595 596 /* inform the user of what is up */ 597 printf("%s: <%s>, pcyl %d\n", 598 device_xname(xy->sc_dev), 599 (char *)dvmabuf, xy->pcyl); 600 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 601 printf("%s: %dMB, %d cyl, %d head, %d sec\n", 602 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect); 603 604 /* 605 * 450/451 stupidity: the drive type is encoded into the format 606 * of the disk. the drive type in the IOPB must match the drive 607 * type in the format, or you will not be able to do I/O to the 608 * disk (you get header not found errors). if you have two drives 609 * of different sizes that have the same drive type in their 610 * formatting then you are out of luck. 611 * 612 * this problem was corrected in the 753/7053. 613 */ 614 615 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 616 struct xy_softc *oxy; 617 618 oxy = xyc->sc_drives[lcv]; 619 if (oxy == NULL || oxy == xy) 620 continue; 621 if (oxy->drive_type != xy->drive_type) 622 continue; 623 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 624 xy->nhead != oxy->nhead) { 625 printf("%s: %s and %s must be the same size!\n", 626 device_xname(xyc->sc_dev), 627 device_xname(xy->sc_dev), 628 device_xname(oxy->sc_dev)); 629 panic("xy drive size mismatch"); 630 } 631 } 632 633 634 /* now set the real drive parameters! */ 635 blk = (xy->nsect - 1) + 636 ((xy->nhead - 1) * xy->nsect) + 637 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 638 err = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fullmode); 639 XYC_DONE(xyc, err); 640 if (err) { 641 printf("%s: write drive size failed: %s\n", 642 device_xname(xy->sc_dev), xyc_e2str(err)); 643 goto done; 644 } 645 newstate = XY_DRIVE_ONLINE; 646 647 /* 648 * read bad144 table. this table resides on the first sector of the 649 * last track of the disk (i.e. second cyl of "acyl" area). 650 */ 651 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 652 /* last cyl */ 653 (xy->nhead - 1) * xy->nsect; /* last head */ 654 err = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 655 dvmabuf, fullmode); 656 XYC_DONE(xyc, err); 657 if (err) { 658 printf("%s: reading bad144 failed: %s\n", 659 device_xname(xy->sc_dev), xyc_e2str(err)); 660 goto done; 661 } 662 663 /* check dkbad for sanity */ 664 dkb = (struct dkbad *)dvmabuf; 665 for (lcv = 0; lcv < 126; lcv++) { 666 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 667 dkb->bt_bad[lcv].bt_cyl == 0) && 668 dkb->bt_bad[lcv].bt_trksec == 0xffff) 669 continue; /* blank */ 670 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 671 break; 672 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 673 break; 674 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 675 break; 676 } 677 if (lcv != 126) { 678 printf("%s: warning: invalid bad144 sector!\n", 679 device_xname(xy->sc_dev)); 680 } else { 681 memcpy(&xy->dkb, dvmabuf, XYFM_BPS); 682 } 683 684 done: 685 xy->state = newstate; 686 dvma_free(dvmabuf, XYFM_BPS); 687 } 688 689 /* 690 * { b , c } d e v s w f u n c t i o n s 691 */ 692 693 /* 694 * xyclose: close device 695 */ 696 int 697 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 698 { 699 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 700 int part = DISKPART(dev); 701 702 /* clear mask bits */ 703 704 switch (fmt) { 705 case S_IFCHR: 706 xy->sc_dk.dk_copenmask &= ~(1 << part); 707 break; 708 case S_IFBLK: 709 xy->sc_dk.dk_bopenmask &= ~(1 << part); 710 break; 711 } 712 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 713 714 return 0; 715 } 716 717 /* 718 * xydump: crash dump system 719 */ 720 int 721 xydump(dev_t dev, daddr_t blkno, void *va, size_t sz) 722 { 723 int unit, part; 724 struct xy_softc *xy; 725 726 unit = DISKUNIT(dev); 727 part = DISKPART(dev); 728 729 xy = device_lookup_private(&xy_cd, unit); 730 if (xy == NULL) 731 return ENXIO; 732 733 printf("%s%c: crash dump not supported (yet)\n", 734 device_xname(xy->sc_dev), 'a' + part); 735 736 return ENXIO; 737 738 /* outline: globals: "dumplo" == sector number of partition to start 739 * dump at (convert to physical sector with partition table) 740 * "dumpsize" == size of dump in clicks "physmem" == size of physical 741 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 742 * physmem) 743 * 744 * dump a copy of physical memory to the dump device starting at sector 745 * "dumplo" in the swap partition (make sure > 0). map in pages as 746 * we go. use polled I/O. 747 * 748 * XXX how to handle NON_CONTIG? 749 */ 750 } 751 752 static enum kauth_device_req 753 xy_getkauthreq(u_char cmd) 754 { 755 enum kauth_device_req req; 756 757 switch (cmd) { 758 case XYCMD_WR: 759 case XYCMD_WTH: 760 case XYCMD_WFM: 761 case XYCMD_WRH: 762 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 763 break; 764 765 case XYCMD_RD: 766 case XYCMD_RTH: 767 case XYCMD_RDH: 768 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 769 break; 770 771 case XYCMD_RDS: 772 case XYCMD_MBD: 773 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 774 break; 775 776 case XYCMD_RST: 777 case XYCMD_SDS: 778 case XYCMD_MBL: 779 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 780 break; 781 782 case XYCMD_NOP: 783 case XYCMD_SK: 784 case XYCMD_ST: 785 case XYCMD_R: 786 default: 787 req = 0; 788 break; 789 } 790 791 return req; 792 } 793 794 /* 795 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 796 */ 797 int 798 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 799 { 800 struct xy_softc *xy; 801 struct xd_iocmd *xio; 802 int error, s, unit; 803 804 unit = DISKUNIT(dev); 805 806 xy = device_lookup_private(&xy_cd, unit); 807 if (xy == NULL) 808 return ENXIO; 809 810 /* switch on ioctl type */ 811 812 switch (command) { 813 case DIOCSBAD: /* set bad144 info */ 814 if ((flag & FWRITE) == 0) 815 return EBADF; 816 s = splbio(); 817 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 818 splx(s); 819 return 0; 820 821 case DIOCGDINFO: /* get disk label */ 822 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 823 return 0; 824 825 case DIOCGPART: /* get partition info */ 826 ((struct partinfo *)addr)->disklab = xy->sc_dk.dk_label; 827 ((struct partinfo *)addr)->part = 828 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 829 return 0; 830 831 case DIOCSDINFO: /* set disk label */ 832 if ((flag & FWRITE) == 0) 833 return EBADF; 834 error = setdisklabel(xy->sc_dk.dk_label, 835 (struct disklabel *)addr, /* xy->sc_dk.dk_openmask : */ 0, 836 xy->sc_dk.dk_cpulabel); 837 if (error == 0) { 838 if (xy->state == XY_DRIVE_NOLABEL) 839 xy->state = XY_DRIVE_ONLINE; 840 } 841 return error; 842 843 case DIOCWLABEL: /* change write status of disk label */ 844 if ((flag & FWRITE) == 0) 845 return EBADF; 846 if (*(int *)addr) 847 xy->flags |= XY_WLABEL; 848 else 849 xy->flags &= ~XY_WLABEL; 850 return 0; 851 852 case DIOCWDINFO: /* write disk label */ 853 if ((flag & FWRITE) == 0) 854 return EBADF; 855 error = setdisklabel(xy->sc_dk.dk_label, 856 (struct disklabel *)addr, /* xy->sc_dk.dk_openmask : */ 0, 857 xy->sc_dk.dk_cpulabel); 858 if (error == 0) { 859 if (xy->state == XY_DRIVE_NOLABEL) 860 xy->state = XY_DRIVE_ONLINE; 861 862 /* Simulate opening partition 0 so write succeeds. */ 863 xy->sc_dk.dk_openmask |= (1 << 0); 864 error = writedisklabel(MAKEDISKDEV(major(dev), 865 DISKUNIT(dev), RAW_PART), 866 xystrategy, xy->sc_dk.dk_label, 867 xy->sc_dk.dk_cpulabel); 868 xy->sc_dk.dk_openmask = 869 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 870 } 871 return error; 872 873 case DIOSXDCMD: { 874 enum kauth_device_req req; 875 876 xio = (struct xd_iocmd *)addr; 877 req = xy_getkauthreq(xio->cmd); 878 if ((error = kauth_authorize_device_passthru(l->l_cred, 879 dev, req, xio)) != 0) 880 return error; 881 return xyc_ioctlcmd(xy, dev, xio); 882 } 883 884 default: 885 return ENOTTY; 886 } 887 } 888 889 /* 890 * xyopen: open drive 891 */ 892 int 893 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 894 { 895 int err, unit, part, s; 896 struct xy_softc *xy; 897 898 /* first, could it be a valid target? */ 899 unit = DISKUNIT(dev); 900 xy = device_lookup_private(&xy_cd, unit); 901 if (xy == NULL) 902 return ENXIO; 903 part = DISKPART(dev); 904 err = 0; 905 906 /* 907 * If some other processing is doing init, sleep. 908 */ 909 s = splbio(); 910 while (xy->state == XY_DRIVE_ATTACHING) { 911 if (tsleep(&xy->state, PRIBIO, "xyopen", 0)) { 912 err = EINTR; 913 goto done; 914 } 915 } 916 /* Do we need to init the drive? */ 917 if (xy->state == XY_DRIVE_UNKNOWN) { 918 xy_init(xy); 919 wakeup(&xy->state); 920 } 921 /* Was the init successful? */ 922 if (xy->state == XY_DRIVE_UNKNOWN) { 923 err = EIO; 924 goto done; 925 } 926 927 /* check for partition */ 928 if (part != RAW_PART && 929 (part >= xy->sc_dk.dk_label->d_npartitions || 930 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 931 err = ENXIO; 932 goto done; 933 } 934 935 /* set open masks */ 936 switch (fmt) { 937 case S_IFCHR: 938 xy->sc_dk.dk_copenmask |= (1 << part); 939 break; 940 case S_IFBLK: 941 xy->sc_dk.dk_bopenmask |= (1 << part); 942 break; 943 } 944 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 945 946 done: 947 splx(s); 948 return err; 949 } 950 951 int 952 xyread(dev_t dev, struct uio *uio, int flags) 953 { 954 955 return physio(xystrategy, NULL, dev, B_READ, minphys, uio); 956 } 957 958 int 959 xywrite(dev_t dev, struct uio *uio, int flags) 960 { 961 962 return physio(xystrategy, NULL, dev, B_WRITE, minphys, uio); 963 } 964 965 966 /* 967 * xysize: return size of a partition for a dump 968 */ 969 970 int 971 xysize(dev_t dev) 972 { 973 struct xy_softc *xysc; 974 int unit, part, size, omask; 975 976 /* valid unit? */ 977 unit = DISKUNIT(dev); 978 xysc = device_lookup_private(&xy_cd, unit); 979 if (xysc == NULL) 980 return -1; 981 982 part = DISKPART(dev); 983 omask = xysc->sc_dk.dk_openmask & (1 << part); 984 985 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 986 return -1; 987 988 /* do it */ 989 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 990 size = -1; /* only give valid size for swap partitions */ 991 else 992 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 993 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 994 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 995 return -1; 996 return size; 997 } 998 999 /* 1000 * xystrategy: buffering system interface to xy. 1001 */ 1002 void 1003 xystrategy(struct buf *bp) 1004 { 1005 struct xy_softc *xy; 1006 int s, unit; 1007 struct disklabel *lp; 1008 daddr_t blkno; 1009 1010 unit = DISKUNIT(bp->b_dev); 1011 1012 /* check for live device */ 1013 1014 xy = device_lookup_private(&xy_cd, unit); 1015 if (xy == NULL || 1016 bp->b_blkno < 0 || 1017 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1018 bp->b_error = EINVAL; 1019 goto done; 1020 } 1021 1022 /* There should always be an open first. */ 1023 if (xy->state == XY_DRIVE_UNKNOWN) { 1024 bp->b_error = EIO; 1025 goto done; 1026 } 1027 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1028 /* no I/O to unlabeled disks, unless raw partition */ 1029 bp->b_error = EIO; 1030 goto done; 1031 } 1032 /* short circuit zero length request */ 1033 1034 if (bp->b_bcount == 0) 1035 goto done; 1036 1037 /* check bounds with label (disksubr.c). Determine the size of the 1038 * transfer, and make sure it is within the boundaries of the 1039 * partition. Adjust transfer if needed, and signal errors or early 1040 * completion. */ 1041 1042 lp = xy->sc_dk.dk_label; 1043 1044 if (bounds_check_with_label(&xy->sc_dk, bp, 1045 (xy->flags & XY_WLABEL) != 0) <= 0) 1046 goto done; 1047 1048 /* 1049 * Now convert the block number to absolute and put it in 1050 * terms of the device's logical block size. 1051 */ 1052 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1053 if (DISKPART(bp->b_dev) != RAW_PART) 1054 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1055 1056 bp->b_rawblkno = blkno; 1057 1058 /* 1059 * now we know we have a valid buf structure that we need to do I/O 1060 * on. 1061 */ 1062 1063 s = splbio(); /* protect the queues */ 1064 1065 BUFQ_PUT(xy->xyq, bp); /* XXX disksort_cylinder */ 1066 1067 /* start 'em up */ 1068 1069 xyc_start(xy->parent, NULL); 1070 1071 /* done! */ 1072 1073 splx(s); 1074 return; 1075 1076 done: 1077 /* tells upper layers we are done with this buf */ 1078 bp->b_resid = bp->b_bcount; 1079 biodone(bp); 1080 } 1081 /* 1082 * end of {b,c}devsw functions 1083 */ 1084 1085 /* 1086 * i n t e r r u p t f u n c t i o n 1087 * 1088 * xycintr: hardware interrupt. 1089 */ 1090 int 1091 xycintr(void *v) 1092 { 1093 struct xyc_softc *xycsc = v; 1094 1095 /* kick the event counter */ 1096 xycsc->sc_intrcnt.ev_count++; 1097 1098 /* remove as many done IOPBs as possible */ 1099 xyc_remove_iorq(xycsc); 1100 1101 /* start any iorq's already waiting */ 1102 xyc_start(xycsc, NULL); 1103 1104 return 1; 1105 } 1106 /* 1107 * end of interrupt function 1108 */ 1109 1110 /* 1111 * i n t e r n a l f u n c t i o n s 1112 */ 1113 1114 /* 1115 * xyc_rqinit: fill out the fields of an I/O request 1116 */ 1117 1118 inline void 1119 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, 1120 int md, u_long blk, int cnt, void *db, struct buf *bp) 1121 { 1122 1123 rq->xyc = xyc; 1124 rq->xy = xy; 1125 rq->ttl = XYC_MAXTTL + 10; 1126 rq->mode = md; 1127 rq->tries = rq->errno = rq->lasterror = 0; 1128 rq->blockno = blk; 1129 rq->sectcnt = cnt; 1130 rq->dbuf = rq->dbufbase = db; 1131 rq->buf = bp; 1132 } 1133 1134 /* 1135 * xyc_rqtopb: load up an IOPB based on an iorq 1136 */ 1137 1138 void 1139 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1140 { 1141 u_long block, dp; 1142 1143 /* normal IOPB case, standard stuff */ 1144 1145 /* chain bit handled later */ 1146 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1147 iopb->com = cmd; 1148 iopb->errno = 0; 1149 iopb->errs = 0; 1150 iopb->done = 0; 1151 if (iorq->xy) { 1152 iopb->unit = iorq->xy->xy_drive; 1153 iopb->dt = iorq->xy->drive_type; 1154 } else { 1155 iopb->unit = 0; 1156 iopb->dt = 0; 1157 } 1158 block = iorq->blockno; 1159 if (iorq->xy == NULL || block == 0) { 1160 iopb->sect = iopb->head = iopb->cyl = 0; 1161 } else { 1162 iopb->sect = block % iorq->xy->nsect; 1163 block = block / iorq->xy->nsect; 1164 iopb->head = block % iorq->xy->nhead; 1165 block = block / iorq->xy->nhead; 1166 iopb->cyl = block; 1167 } 1168 iopb->scnt = iorq->sectcnt; 1169 if (iorq->dbuf == NULL) { 1170 iopb->dataa = 0; 1171 iopb->datar = 0; 1172 } else { 1173 dp = dvma_kvtopa(iorq->dbuf, iorq->xyc->bustype); 1174 iopb->dataa = (dp & 0xffff); 1175 iopb->datar = ((dp & 0xff0000) >> 16); 1176 } 1177 iopb->subfn = subfun; 1178 } 1179 1180 1181 /* 1182 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1183 */ 1184 1185 int 1186 xyc_unbusy(struct xyc *xyc, int del) 1187 { 1188 1189 while (del-- > 0) { 1190 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1191 break; 1192 DELAY(1); 1193 } 1194 return del == 0 ? XY_ERR_FAIL : XY_ERR_AOK; 1195 } 1196 1197 /* 1198 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1199 * note that NORM requests are handled separately. 1200 */ 1201 int 1202 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1203 int scnt, char *dptr, int fullmode) 1204 { 1205 struct xy_iorq *iorq = xycsc->ciorq; 1206 struct xy_iopb *iopb = xycsc->ciopb; 1207 int submode = XY_STATE(fullmode); 1208 1209 /* 1210 * is someone else using the control iopq wait for it if we can 1211 */ 1212 start: 1213 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1214 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1215 return XY_ERR_FAIL; 1216 goto start; 1217 } 1218 1219 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1220 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1221 iorq->mode = XY_SUB_FREE; 1222 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1223 } 1224 1225 /* init iorq/iopb */ 1226 1227 xyc_rqinit(iorq, xycsc, 1228 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1229 fullmode, block, scnt, dptr, NULL); 1230 1231 /* load IOPB from iorq */ 1232 1233 xyc_rqtopb(iorq, iopb, cmd, subfn); 1234 1235 /* submit it for processing */ 1236 1237 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1238 1239 return XY_ERR_AOK; 1240 } 1241 1242 /* 1243 * xyc_startbuf 1244 * start a buffer for running 1245 */ 1246 1247 int 1248 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1249 { 1250 int partno; 1251 struct xy_iorq *iorq; 1252 struct xy_iopb *iopb; 1253 u_long block; 1254 void *dbuf; 1255 1256 iorq = xysc->xyrq; 1257 iopb = iorq->iopb; 1258 1259 /* get buf */ 1260 1261 if (bp == NULL) 1262 panic("%s null buf", __func__); 1263 1264 partno = DISKPART(bp->b_dev); 1265 #ifdef XYC_DEBUG 1266 printf("%s: %s%c: %s block %d\n", __func__, device_xname(xysc->sc_dev), 1267 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", 1268 (int)bp->b_blkno); 1269 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1270 bp->b_bcount, bp->b_data); 1271 #endif 1272 1273 /* 1274 * load request. 1275 * 1276 * also, note that there are two kinds of buf structures, those with 1277 * B_PHYS set and those without B_PHYS. if B_PHYS is set, then it is 1278 * a raw I/O (to a cdevsw) and we are doing I/O directly to the users' 1279 * buffer which has already been mapped into DVMA space. (Not on sun3) 1280 * However, if B_PHYS is not set, then the buffer is a normal system 1281 * buffer which does *not* live in DVMA space. In that case we call 1282 * dvma_mapin to map it into DVMA space so we can do the DMA to it. 1283 * 1284 * in cases where we do a dvma_mapin, note that iorq points to the 1285 * buffer as mapped into DVMA space, where as the bp->b_data points 1286 * to its non-DVMA mapping. 1287 * 1288 * XXX - On the sun3, B_PHYS does NOT mean the buffer is mapped 1289 * into dvma space, only that it was remapped into the kernel. 1290 * We ALWAYS have to remap the kernel buf into DVMA space. 1291 * (It is done inexpensively, using whole segments!) 1292 */ 1293 1294 block = bp->b_rawblkno; 1295 1296 dbuf = dvma_mapin(bp->b_data, bp->b_bcount, 0); 1297 if (dbuf == NULL) { /* out of DVMA space */ 1298 printf("%s: warning: out of DVMA space\n", 1299 device_xname(xycsc->sc_dev)); 1300 return XY_ERR_FAIL; /* XXX: need some sort of 1301 * call-back scheme here? */ 1302 } 1303 1304 /* init iorq and load iopb from it */ 1305 1306 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1307 bp->b_bcount / XYFM_BPS, dbuf, bp); 1308 1309 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1310 1311 /* Instrumentation. */ 1312 disk_busy(&xysc->sc_dk); 1313 1314 return XY_ERR_AOK; 1315 } 1316 1317 1318 /* 1319 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1320 * if ok. if it fail returns an error code. type is XY_SUB_*. 1321 * 1322 * note: caller frees iorq in all cases except NORM 1323 * 1324 * return value: 1325 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1326 * WAIT: XY_AOK (success), <error-code> (failed) 1327 * POLL: <same as WAIT> 1328 * NOQ : <same as NORM> 1329 * 1330 * there are three sources for i/o requests: 1331 * [1] xystrategy: normal block I/O, using "struct buf" system. 1332 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1333 * [3] open/ioctl: these are I/O requests done in the context of a process, 1334 * and the process should block until they are done. 1335 * 1336 * software state is stored in the iorq structure. each iorq has an 1337 * iopb structure. the hardware understands the iopb structure. 1338 * every command must go through an iopb. a 450 handles one iopb at a 1339 * time, where as a 451 can take them in chains. [the 450 claims it 1340 * can handle chains, but is appears to be buggy...] iopb are allocated 1341 * in DVMA space at boot up time. each disk gets one iopb, and the 1342 * controller gets one (for POLL and WAIT commands). what happens if 1343 * the iopb is busy? for i/o type [1], the buffers are queued at the 1344 * "buff" layer and * picked up later by the interrupt routine. for case 1345 * [2] we can only be blocked if there is a WAIT type I/O request being 1346 * run. since this can only happen when we are crashing, we wait a sec 1347 * and then steal the IOPB. for case [3] the process can sleep 1348 * on the iorq free list until some iopbs are available. 1349 */ 1350 1351 int 1352 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1353 { 1354 struct xy_iopb *iopb; 1355 u_long iopbaddr; 1356 1357 #ifdef XYC_DEBUG 1358 printf("%s(%s, addr=0x%x, type=%d)\n", __func__, 1359 device_xname(xycsc->sc_dev), iorq, type); 1360 #endif 1361 1362 /* first check and see if controller is busy */ 1363 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1364 #ifdef XYC_DEBUG 1365 printf("%s: XYC not ready (BUSY)\n", __func__); 1366 #endif 1367 if (type == XY_SUB_NOQ) 1368 return XY_ERR_FAIL; /* failed */ 1369 switch (type) { 1370 case XY_SUB_NORM: 1371 return XY_ERR_AOK; /* success */ 1372 case XY_SUB_WAIT: 1373 while (iorq->iopb->done == 0) { 1374 (void)tsleep(iorq, PRIBIO, "xyciorq", 0); 1375 } 1376 return (iorq->errno); 1377 case XY_SUB_POLL: /* steal controller */ 1378 iopbaddr = xycsc->xyc->xyc_rsetup; /* RESET */ 1379 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == 1380 XY_ERR_FAIL) 1381 panic("%s: stuck xyc", __func__); 1382 printf("%s: stole controller\n", 1383 device_xname(xycsc->sc_dev)); 1384 break; 1385 default: 1386 panic("%s adding", __func__); 1387 } 1388 } 1389 1390 iopb = xyc_chain(xycsc, iorq); /* build chain */ 1391 if (iopb == NULL) { /* nothing doing? */ 1392 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1393 return XY_ERR_AOK; 1394 panic("xyc_submit_iorq: xyc_chain failed!"); 1395 } 1396 iopbaddr = dvma_kvtopa(iopb, xycsc->bustype); 1397 1398 XYC_GO(xycsc->xyc, iopbaddr); 1399 1400 /* command now running, wrap it up */ 1401 switch (type) { 1402 case XY_SUB_NORM: 1403 case XY_SUB_NOQ: 1404 return XY_ERR_AOK; /* success */ 1405 case XY_SUB_WAIT: 1406 while (iorq->iopb->done == 0) { 1407 (void)tsleep(iorq, PRIBIO, "xyciorq", 0); 1408 } 1409 return iorq->errno; 1410 case XY_SUB_POLL: 1411 return xyc_piodriver(xycsc, iorq); 1412 default: 1413 panic("%s wrap up", __func__); 1414 } 1415 panic("%s impossible", __func__); 1416 return 0; /* not reached */ 1417 } 1418 1419 1420 /* 1421 * xyc_chain: build a chain. return dvma address of first element in 1422 * the chain. iorq != NULL: means we only want that item on the chain. 1423 */ 1424 1425 struct xy_iopb * 1426 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1427 { 1428 int togo, chain, hand; 1429 struct xy_iopb *iopb, *prev_iopb; 1430 1431 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1432 1433 /* 1434 * promote control IOPB to the top 1435 */ 1436 if (iorq == NULL) { 1437 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1438 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1439 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1440 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1441 } 1442 1443 /* 1444 * special case: if iorq != NULL then we have a POLL or WAIT request. 1445 * we let these take priority and do them first. 1446 */ 1447 if (iorq) { 1448 xycsc->xy_chain[0] = iorq; 1449 iorq->iopb->chen = 0; 1450 return iorq->iopb; 1451 } 1452 1453 /* 1454 * NORM case: do round robin and maybe chain (if allowed and possible) 1455 */ 1456 1457 chain = 0; 1458 hand = xycsc->xy_hand; 1459 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1460 1461 for (togo = XYC_MAXIOPB ; togo > 0 ; 1462 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1463 1464 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1465 xycsc->iopbase[hand].done) 1466 continue; /* not ready-for-i/o */ 1467 1468 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1469 iopb = xycsc->xy_chain[chain]->iopb; 1470 iopb->chen = 0; 1471 if (chain != 0) { /* adding a link to a chain? */ 1472 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1473 prev_iopb->chen = 1; 1474 prev_iopb->nxtiopb = 0xffff & 1475 dvma_kvtopa(iopb, xycsc->bustype); 1476 } else { /* head of chain */ 1477 iorq = xycsc->xy_chain[chain]; 1478 } 1479 chain++; 1480 if (xycsc->no_ols) 1481 break; /* quit if chaining dis-allowed */ 1482 } 1483 return iorq ? iorq->iopb : NULL; 1484 } 1485 1486 /* 1487 * xyc_piodriver 1488 * 1489 * programmed i/o driver. this function takes over the computer 1490 * and drains off the polled i/o request. it returns the status of the iorq 1491 * the caller is interesting in. 1492 */ 1493 int 1494 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1495 { 1496 int nreset = 0; 1497 int retval = 0; 1498 u_long res; 1499 1500 #ifdef XYC_DEBUG 1501 printf("%s(%s, 0x%x)\n", __func__, device_xname(xycsc->sc_dev), iorq); 1502 #endif 1503 1504 while (iorq->iopb->done == 0) { 1505 1506 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1507 1508 /* we expect some progress soon */ 1509 if (res == XY_ERR_FAIL && nreset >= 2) { 1510 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1511 #ifdef XYC_DEBUG 1512 printf("%s: timeout\n", __func__); 1513 #endif 1514 return XY_ERR_FAIL; 1515 } 1516 if (res == XY_ERR_FAIL) { 1517 if (xyc_reset(xycsc, 0, 1518 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1519 XY_ERR_FAIL, 0) == XY_ERR_FAIL) 1520 return XY_ERR_FAIL; /* flushes all but POLL 1521 * requests, resets */ 1522 continue; 1523 } 1524 1525 xyc_remove_iorq(xycsc); /* may resubmit request */ 1526 1527 if (iorq->iopb->done == 0) 1528 xyc_start(xycsc, iorq); 1529 } 1530 1531 /* get return value */ 1532 1533 retval = iorq->errno; 1534 1535 #ifdef XYC_DEBUG 1536 printf("%s: done, retval = 0x%x (%s)\n", __func__, 1537 iorq->errno, xyc_e2str(iorq->errno)); 1538 #endif 1539 1540 /* start up any bufs that have queued */ 1541 1542 xyc_start(xycsc, NULL); 1543 1544 return retval; 1545 } 1546 1547 /* 1548 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1549 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1550 */ 1551 void 1552 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1553 { 1554 struct xy_iopb tmpiopb; 1555 u_long addr; 1556 int del; 1557 memcpy(&tmpiopb, xycsc->ciopb, sizeof(tmpiopb)); 1558 xycsc->ciopb->chen = xycsc->ciopb->done = xycsc->ciopb->errs = 0; 1559 xycsc->ciopb->ien = 0; 1560 xycsc->ciopb->com = XYCMD_RST; 1561 xycsc->ciopb->unit = xysc->xy_drive; 1562 addr = dvma_kvtopa(xycsc->ciopb, xycsc->bustype); 1563 1564 XYC_GO(xycsc->xyc, addr); 1565 1566 del = XYC_RESETUSEC; 1567 while (del > 0) { 1568 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1569 break; 1570 DELAY(1); 1571 del--; 1572 } 1573 1574 if (del <= 0 || xycsc->ciopb->errs) { 1575 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1576 xyc_e2str(xycsc->ciopb->errno)); 1577 del = xycsc->xyc->xyc_rsetup; 1578 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1579 panic("%s", __func__); 1580 } else { 1581 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1582 } 1583 memcpy(xycsc->ciopb, &tmpiopb, sizeof(tmpiopb)); 1584 } 1585 1586 1587 /* 1588 * xyc_reset: reset everything: requests are marked as errors except 1589 * a polled request (which is resubmitted) 1590 */ 1591 int 1592 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1593 int error, struct xy_softc *xysc) 1594 { 1595 int del = 0, lcv, retval = XY_ERR_AOK; 1596 struct xy_iorq *iorq; 1597 1598 /* soft reset hardware */ 1599 1600 if (quiet == 0) 1601 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1602 del = xycsc->xyc->xyc_rsetup; 1603 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1604 if (del == XY_ERR_FAIL) { 1605 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1606 retval = XY_ERR_FAIL; 1607 } 1608 if (xysc) 1609 xyc_xyreset(xycsc, xysc); 1610 1611 /* fix queues based on "blast-mode" */ 1612 1613 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1614 iorq = &xycsc->reqs[lcv]; 1615 1616 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1617 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1618 XY_STATE(iorq->mode) != XY_SUB_NORM) 1619 /* is it active? */ 1620 continue; 1621 1622 if (blastmode == XY_RSET_ALL || 1623 blastmode != iorq) { 1624 /* failed */ 1625 iorq->errno = error; 1626 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1627 switch (XY_STATE(iorq->mode)) { 1628 case XY_SUB_NORM: 1629 iorq->buf->b_error = EIO; 1630 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1631 /* Sun3: map/unmap regardless of B_PHYS */ 1632 dvma_mapout(iorq->dbufbase, 1633 iorq->buf->b_bcount); 1634 (void)BUFQ_GET(iorq->xy->xyq); 1635 disk_unbusy(&iorq->xy->sc_dk, 1636 (iorq->buf->b_bcount - iorq->buf->b_resid), 1637 (iorq->buf->b_flags & B_READ)); 1638 biodone(iorq->buf); 1639 iorq->mode = XY_SUB_FREE; 1640 break; 1641 case XY_SUB_WAIT: 1642 wakeup(iorq); 1643 case XY_SUB_POLL: 1644 iorq->mode = 1645 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1646 break; 1647 } 1648 1649 } else { 1650 1651 /* resubmit, no need to do anything here */ 1652 } 1653 } 1654 1655 /* 1656 * now, if stuff is waiting, start it. 1657 * since we just reset it should go 1658 */ 1659 xyc_start(xycsc, NULL); 1660 1661 return retval; 1662 } 1663 1664 /* 1665 * xyc_start: start waiting buffers 1666 */ 1667 1668 void 1669 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1670 { 1671 int lcv; 1672 struct xy_softc *xy; 1673 1674 if (iorq == NULL) { 1675 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1676 if ((xy = xycsc->sc_drives[lcv]) == NULL) 1677 continue; 1678 if (BUFQ_PEEK(xy->xyq) == NULL) 1679 continue; 1680 if (xy->xyrq->mode != XY_SUB_FREE) 1681 continue; 1682 xyc_startbuf(xycsc, xy, BUFQ_PEEK(xy->xyq)); 1683 } 1684 } 1685 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1686 } 1687 1688 /* 1689 * xyc_remove_iorq: remove "done" IOPB's. 1690 */ 1691 1692 int 1693 xyc_remove_iorq(struct xyc_softc *xycsc) 1694 { 1695 int errno, rq, comm, errs; 1696 struct xyc *xyc = xycsc->xyc; 1697 u_long addr; 1698 struct xy_iopb *iopb; 1699 struct xy_iorq *iorq; 1700 struct buf *bp; 1701 1702 if (xyc->xyc_csr & XYC_DERR) { 1703 /* 1704 * DOUBLE ERROR: should never happen under normal use. This 1705 * error is so bad, you can't even tell which IOPB is bad, so 1706 * we dump them all. 1707 */ 1708 errno = XY_ERR_DERR; 1709 printf("%s: DOUBLE ERROR!\n", device_xname(xycsc->sc_dev)); 1710 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1711 printf("%s: soft reset failed!\n", 1712 device_xname(xycsc->sc_dev)); 1713 panic("%s: controller DEAD", __func__); 1714 } 1715 return XY_ERR_AOK; 1716 } 1717 1718 /* 1719 * get iopb that is done, loop down the chain 1720 */ 1721 1722 if (xyc->xyc_csr & XYC_ERR) { 1723 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1724 } 1725 if (xyc->xyc_csr & XYC_IPND) { 1726 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1727 } 1728 1729 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1730 iorq = xycsc->xy_chain[rq]; 1731 if (iorq == NULL) break; /* done ! */ 1732 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1733 continue; /* free, or done */ 1734 iopb = iorq->iopb; 1735 if (iopb->done == 0) 1736 continue; /* not done yet */ 1737 1738 comm = iopb->com; 1739 errs = iopb->errs; 1740 1741 if (errs) 1742 iorq->errno = iopb->errno; 1743 else 1744 iorq->errno = 0; 1745 1746 /* handle non-fatal errors */ 1747 1748 if (errs && 1749 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1750 continue; /* AOK: we resubmitted it */ 1751 1752 1753 /* this iorq is now done (hasn't been restarted or anything) */ 1754 1755 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1756 xyc_perror(iorq, iopb, 0); 1757 1758 /* now, if read/write check to make sure we got all the data 1759 * we needed. (this may not be the case if we got an error in 1760 * the middle of a multisector request). */ 1761 1762 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1763 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1764 /* we just successfully processed a bad144 sector 1765 * note: if we are in bad 144 mode, the pointers have 1766 * been advanced already (see above) and are pointing 1767 * at the bad144 sector. to exit bad144 mode, we 1768 * must advance the pointers 1 sector and issue a new 1769 * request if there are still sectors left to process 1770 * 1771 */ 1772 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1773 1774 /* exit b144 mode */ 1775 iorq->mode = iorq->mode & (~XY_MODE_B144); 1776 1777 if (iorq->sectcnt) { /* more to go! */ 1778 iorq->lasterror = iorq->errno = iopb->errno = 0; 1779 iopb->errs = iopb->done = 0; 1780 iorq->tries = 0; 1781 iopb->scnt = iorq->sectcnt; 1782 iopb->cyl = 1783 iorq->blockno / iorq->xy->sectpercyl; 1784 iopb->head = 1785 (iorq->blockno / iorq->xy->nhead) % 1786 iorq->xy->nhead; 1787 iopb->sect = iorq->blockno % XYFM_BPS; 1788 addr = dvma_kvtopa(iorq->dbuf, xycsc->bustype); 1789 iopb->dataa = (addr & 0xffff); 1790 iopb->datar = ((addr & 0xff0000) >> 16); 1791 /* will resubit at end */ 1792 continue; 1793 } 1794 } 1795 /* final cleanup, totally done with this request */ 1796 1797 switch (XY_STATE(iorq->mode)) { 1798 case XY_SUB_NORM: 1799 bp = iorq->buf; 1800 if (errs) { 1801 bp->b_error = EIO; 1802 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1803 } else { 1804 bp->b_resid = 0; /* done */ 1805 } 1806 /* Sun3: map/unmap regardless of B_PHYS */ 1807 dvma_mapout(iorq->dbufbase, iorq->buf->b_bcount); 1808 (void)BUFQ_GET(iorq->xy->xyq); 1809 disk_unbusy(&iorq->xy->sc_dk, 1810 (bp->b_bcount - bp->b_resid), 1811 (bp->b_flags & B_READ)); 1812 iorq->mode = XY_SUB_FREE; 1813 biodone(bp); 1814 break; 1815 case XY_SUB_WAIT: 1816 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1817 wakeup(iorq); 1818 break; 1819 case XY_SUB_POLL: 1820 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1821 break; 1822 } 1823 } 1824 1825 return XY_ERR_AOK; 1826 } 1827 1828 /* 1829 * xyc_perror: print error. 1830 * - if still_trying is true: we got an error, retried and got a 1831 * different error. in that case lasterror is the old error, 1832 * and errno is the new one. 1833 * - if still_trying is not true, then if we ever had an error it 1834 * is in lasterror. also, if iorq->errno == 0, then we recovered 1835 * from that error (otherwise iorq->errno == iorq->lasterror). 1836 */ 1837 void 1838 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1839 { 1840 int error = iorq->lasterror; 1841 1842 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 1843 : device_xname(iorq->xyc->sc_dev)); 1844 if (iorq->buf) 1845 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 1846 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 1847 printf("%s %d/%d/%d: ", 1848 (iopb->com == XYCMD_RD) ? "read" : "write", 1849 iopb->cyl, iopb->head, iopb->sect); 1850 printf("%s", xyc_e2str(error)); 1851 1852 if (still_trying) 1853 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 1854 else 1855 if (iorq->errno == 0) 1856 printf(" [recovered in %d tries]", iorq->tries); 1857 1858 printf("\n"); 1859 } 1860 1861 /* 1862 * xyc_error: non-fatal error encountered... recover. 1863 * return AOK if resubmitted, return FAIL if this iopb is done 1864 */ 1865 int 1866 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 1867 int comm) 1868 { 1869 int errno = iorq->errno; 1870 int erract = xyc_entoact(errno); 1871 int oldmode, advance, i; 1872 1873 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 1874 oldmode = iorq->mode; 1875 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 1876 /* make xyc_start ignore us */ 1877 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 1878 iorq->mode = oldmode; 1879 } 1880 /* check for read/write to a sector in bad144 table if bad: redirect 1881 * request to bad144 area */ 1882 1883 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 1884 (iorq->mode & XY_MODE_B144) == 0) { 1885 advance = iorq->sectcnt - iopb->scnt; 1886 XYC_ADVANCE(iorq, advance); 1887 if ((i = isbad(&iorq->xy->dkb, 1888 iorq->blockno / iorq->xy->sectpercyl, 1889 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 1890 iorq->blockno % iorq->xy->nsect)) != -1) { 1891 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 1892 * redirect */ 1893 iopb->errno = iopb->done = iopb->errs = 0; 1894 iopb->scnt = 1; 1895 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 1896 /* second to last acyl */ 1897 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 1898 * standard */ 1899 iopb->head = i / iorq->xy->nhead; 1900 iopb->sect = i % iorq->xy->nhead; 1901 /* will resubmit when we come out of remove_iorq */ 1902 return XY_ERR_AOK; /* recovered! */ 1903 } 1904 } 1905 1906 /* 1907 * it isn't a bad144 sector, must be real error! see if we can retry 1908 * it? 1909 */ 1910 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1911 xyc_perror(iorq, iopb, 1); /* inform of error state 1912 * change */ 1913 iorq->lasterror = errno; 1914 1915 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 1916 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 1917 iorq->tries++; 1918 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 1919 /* will resubmit at end of remove_iorq */ 1920 return XY_ERR_AOK; /* recovered! */ 1921 } 1922 1923 /* failed to recover from this error */ 1924 return XY_ERR_FAIL; 1925 } 1926 1927 /* 1928 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 1929 */ 1930 void 1931 xyc_tick(void *arg) 1932 { 1933 struct xyc_softc *xycsc = arg; 1934 int lcv, s, reset = 0; 1935 1936 /* reduce ttl for each request if one goes to zero, reset xyc */ 1937 s = splbio(); 1938 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1939 if (xycsc->reqs[lcv].mode == 0 || 1940 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 1941 continue; 1942 xycsc->reqs[lcv].ttl--; 1943 if (xycsc->reqs[lcv].ttl == 0) 1944 reset = 1; 1945 } 1946 if (reset) { 1947 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 1948 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 1949 } 1950 splx(s); 1951 1952 /* until next time */ 1953 1954 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 1955 } 1956 1957 /* 1958 * xyc_ioctlcmd: this function provides a user level interface to the 1959 * controller via ioctl. this allows "format" programs to be written 1960 * in user code, and is also useful for some debugging. we return 1961 * an error code. called at user priority. 1962 * 1963 * XXX missing a few commands (see the 7053 driver for ideas) 1964 */ 1965 int 1966 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 1967 { 1968 int s, err, rqno; 1969 void *dvmabuf = NULL; 1970 struct xyc_softc *xycsc; 1971 1972 /* check sanity of requested command */ 1973 1974 switch (xio->cmd) { 1975 1976 case XYCMD_NOP: /* no op: everything should be zero */ 1977 if (xio->subfn || xio->dptr || xio->dlen || 1978 xio->block || xio->sectcnt) 1979 return EINVAL; 1980 break; 1981 1982 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 1983 case XYCMD_WR: 1984 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 1985 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 1986 return EINVAL; 1987 break; 1988 1989 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 1990 return EINVAL; 1991 break; 1992 1993 default: 1994 return EINVAL;/* ??? */ 1995 } 1996 1997 /* create DVMA buffer for request if needed */ 1998 1999 if (xio->dlen) { 2000 dvmabuf = dvma_malloc(xio->dlen); 2001 if (xio->cmd == XYCMD_WR) { 2002 err = copyin(xio->dptr, dvmabuf, xio->dlen); 2003 if (err) { 2004 dvma_free(dvmabuf, xio->dlen); 2005 return err; 2006 } 2007 } 2008 } 2009 /* do it! */ 2010 2011 err = 0; 2012 xycsc = xy->parent; 2013 s = splbio(); 2014 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2015 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2016 if (rqno == XY_ERR_FAIL) { 2017 err = EIO; 2018 goto done; 2019 } 2020 xio->errno = xycsc->ciorq->errno; 2021 xio->tries = xycsc->ciorq->tries; 2022 XYC_DONE(xycsc, err); 2023 2024 if (xio->cmd == XYCMD_RD) 2025 err = copyout(dvmabuf, xio->dptr, xio->dlen); 2026 2027 done: 2028 splx(s); 2029 if (dvmabuf) 2030 dvma_free(dvmabuf, xio->dlen); 2031 return err; 2032 } 2033 2034 /* 2035 * xyc_e2str: convert error code number into an error string 2036 */ 2037 const char * 2038 xyc_e2str(int no) 2039 { 2040 switch (no) { 2041 case XY_ERR_FAIL: 2042 return "Software fatal error"; 2043 case XY_ERR_DERR: 2044 return "DOUBLE ERROR"; 2045 case XY_ERR_AOK: 2046 return "Successful completion"; 2047 case XY_ERR_IPEN: 2048 return "Interrupt pending"; 2049 case XY_ERR_BCFL: 2050 return "Busy conflict"; 2051 case XY_ERR_TIMO: 2052 return "Operation timeout"; 2053 case XY_ERR_NHDR: 2054 return "Header not found"; 2055 case XY_ERR_HARD: 2056 return "Hard ECC error"; 2057 case XY_ERR_ICYL: 2058 return "Illegal cylinder address"; 2059 case XY_ERR_ISEC: 2060 return "Illegal sector address"; 2061 case XY_ERR_SMAL: 2062 return "Last sector too small"; 2063 case XY_ERR_SACK: 2064 return "Slave ACK error (non-existent memory)"; 2065 case XY_ERR_CHER: 2066 return "Cylinder and head/header error"; 2067 case XY_ERR_SRTR: 2068 return "Auto-seek retry successful"; 2069 case XY_ERR_WPRO: 2070 return "Write-protect error"; 2071 case XY_ERR_UIMP: 2072 return "Unimplemented command"; 2073 case XY_ERR_DNRY: 2074 return "Drive not ready"; 2075 case XY_ERR_SZER: 2076 return "Sector count zero"; 2077 case XY_ERR_DFLT: 2078 return "Drive faulted"; 2079 case XY_ERR_ISSZ: 2080 return "Illegal sector size"; 2081 case XY_ERR_SLTA: 2082 return "Self test A"; 2083 case XY_ERR_SLTB: 2084 return "Self test B"; 2085 case XY_ERR_SLTC: 2086 return "Self test C"; 2087 case XY_ERR_SOFT: 2088 return "Soft ECC error"; 2089 case XY_ERR_SFOK: 2090 return "Soft ECC error recovered"; 2091 case XY_ERR_IHED: 2092 return "Illegal head"; 2093 case XY_ERR_DSEQ: 2094 return "Disk sequencer error"; 2095 case XY_ERR_SEEK: 2096 return "Seek error"; 2097 default: 2098 return "Unknown error"; 2099 } 2100 } 2101 2102 int 2103 xyc_entoact(int errno) 2104 { 2105 2106 switch (errno) { 2107 case XY_ERR_FAIL: 2108 case XY_ERR_DERR: 2109 case XY_ERR_IPEN: 2110 case XY_ERR_BCFL: 2111 case XY_ERR_ICYL: 2112 case XY_ERR_ISEC: 2113 case XY_ERR_UIMP: 2114 case XY_ERR_SZER: 2115 case XY_ERR_ISSZ: 2116 case XY_ERR_SLTA: 2117 case XY_ERR_SLTB: 2118 case XY_ERR_SLTC: 2119 case XY_ERR_IHED: 2120 case XY_ERR_SACK: 2121 case XY_ERR_SMAL: 2122 return XY_ERA_PROG; /* program error ! */ 2123 2124 case XY_ERR_TIMO: 2125 case XY_ERR_NHDR: 2126 case XY_ERR_HARD: 2127 case XY_ERR_DNRY: 2128 case XY_ERR_CHER: 2129 case XY_ERR_SEEK: 2130 case XY_ERR_SOFT: 2131 return XY_ERA_HARD; /* hard error, retry */ 2132 2133 case XY_ERR_DFLT: 2134 case XY_ERR_DSEQ: 2135 return XY_ERA_RSET; /* hard error reset */ 2136 2137 case XY_ERR_SRTR: 2138 case XY_ERR_SFOK: 2139 case XY_ERR_AOK: 2140 return XY_ERA_SOFT; /* an FYI error */ 2141 2142 case XY_ERR_WPRO: 2143 return XY_ERA_WPRO; /* write protect */ 2144 } 2145 2146 return XY_ERA_PROG; /* ??? */ 2147 } 2148
Indexes created Mon Sep 29 21:09:56 GMT 2025