1 /* $NetBSD: xy.c,v 1.102 2021/08/07 16:19:17 thorpej 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 * started: 14-Sep-95 34 * references: [1] Xylogics Model 753 User's Manual 35 * part number: 166-753-001, Revision B, May 21, 1988. 36 * "Your Partner For Performance" 37 * [2] other NetBSD disk device drivers 38 * [3] Xylogics Model 450 User's Manual 39 * part number: 166-017-001, Revision B, 1983. 40 * [4] Addendum to Xylogics Model 450 Disk Controller User's 41 * Manual, Jan. 1985. 42 * [5] The 451 Controller, Rev. B3, September 2, 1986. 43 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 44 * 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.102 2021/08/07 16:19:17 thorpej Exp $"); 49 50 #undef XYC_DEBUG /* full debug */ 51 #undef XYC_DIAG /* extra sanity checks */ 52 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 53 #define XYC_DIAG /* link in with master DIAG option */ 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/proc.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/dkbad.h> 72 #include <sys/conf.h> 73 #include <sys/kauth.h> 74 75 #include <sys/bus.h> 76 #include <sys/intr.h> 77 78 #if defined(__sparc__) || defined(sun3) 79 #include <dev/sun/disklabel.h> 80 #endif 81 82 #include <dev/vme/vmereg.h> 83 #include <dev/vme/vmevar.h> 84 85 #include <dev/vme/xyreg.h> 86 #include <dev/vme/xyvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 97 */ 98 #define XYC_GO(XYC, ADDR) { \ 99 u_long addr = (u_long)ADDR; \ 100 (XYC)->xyc_addr_lo = ((addr) & 0xff); \ 101 (addr) = ((addr) >> 8); \ 102 (XYC)->xyc_addr_hi = ((addr) & 0xff); \ 103 (addr) = ((addr) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((addr) & 0xff); \ 105 (addr) = ((addr) >> 8); \ 106 (XYC)->xyc_reloc_hi = (addr); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errnum; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 150 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 151 const char *xyc_e2str(int); 152 int xyc_entoact(int); 153 int xyc_error(struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int); 155 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 156 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 157 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 158 int xyc_remove_iorq(struct xyc_softc *); 159 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *); 161 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 void *, struct buf *); 164 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 165 void xyc_start(struct xyc_softc *, struct xy_iorq *); 166 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 167 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 168 void xyc_tick(void *); 169 int xyc_unbusy(struct xyc *, int); 170 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 171 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 172 int *, bus_size_t, void **, bus_addr_t *); 173 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 174 int, bus_size_t, void *); 175 176 /* machine interrupt hook */ 177 int xycintr(void *); 178 179 /* autoconf */ 180 int xycmatch(device_t, cfdata_t, void *); 181 void xycattach(device_t, device_t, void *); 182 int xymatch(device_t, cfdata_t, void *); 183 void xyattach(device_t, device_t, void *); 184 static int xyc_probe(void *, bus_space_tag_t, bus_space_handle_t); 185 186 static void xydummystrat(struct buf *); 187 int xygetdisklabel(struct xy_softc *, void *); 188 189 /* 190 * cfattach's: device driver interface to autoconfig 191 */ 192 193 CFATTACH_DECL_NEW(xyc, sizeof(struct xyc_softc), 194 xycmatch, xycattach, NULL, NULL); 195 196 CFATTACH_DECL_NEW(xy, sizeof(struct xy_softc), 197 xymatch, xyattach, NULL, NULL); 198 199 extern struct cfdriver xy_cd; 200 201 dev_type_open(xyopen); 202 dev_type_close(xyclose); 203 dev_type_read(xyread); 204 dev_type_write(xywrite); 205 dev_type_ioctl(xyioctl); 206 dev_type_strategy(xystrategy); 207 dev_type_dump(xydump); 208 dev_type_size(xysize); 209 210 const struct bdevsw xy_bdevsw = { 211 .d_open = xyopen, 212 .d_close = xyclose, 213 .d_strategy = xystrategy, 214 .d_ioctl = xyioctl, 215 .d_dump = xydump, 216 .d_psize = xysize, 217 .d_discard = nodiscard, 218 .d_flag = D_DISK 219 }; 220 221 const struct cdevsw xy_cdevsw = { 222 .d_open = xyopen, 223 .d_close = xyclose, 224 .d_read = xyread, 225 .d_write = xywrite, 226 .d_ioctl = xyioctl, 227 .d_stop = nostop, 228 .d_tty = notty, 229 .d_poll = nopoll, 230 .d_mmap = nommap, 231 .d_kqfilter = nokqfilter, 232 .d_discard = nodiscard, 233 .d_flag = D_DISK 234 }; 235 236 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 237 int driveno; /* unit number */ 238 int fullmode; /* submit mode */ 239 int booting; /* are we booting or not? */ 240 }; 241 242 /* 243 * dkdriver 244 */ 245 246 struct dkdriver xydkdriver = { 247 .d_strategy = xystrategy 248 }; 249 250 /* 251 * start: disk label fix code (XXX) 252 */ 253 254 static void *xy_labeldata; 255 256 static void 257 xydummystrat(struct buf *bp) 258 { 259 if (bp->b_bcount != XYFM_BPS) 260 panic("xydummystrat"); 261 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 262 bp->b_oflags |= BO_DONE; 263 bp->b_cflags &= ~BC_BUSY; 264 } 265 266 int 267 xygetdisklabel(struct xy_softc *xy, void *b) 268 { 269 const char *err; 270 #if defined(__sparc__) || defined(sun3) 271 struct sun_disklabel *sdl; 272 #endif 273 274 /* We already have the label data in `b'; setup for dummy strategy */ 275 xy_labeldata = b; 276 277 /* Required parameter for readdisklabel() */ 278 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 279 280 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 281 xydummystrat, 282 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 283 if (err) { 284 printf("%s: %s\n", device_xname(xy->sc_dev), err); 285 return(XY_ERR_FAIL); 286 } 287 288 #if defined(__sparc__) || defined(sun3) 289 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 290 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 291 if (sdl->sl_magic == SUN_DKMAGIC) { 292 xy->pcyl = sdl->sl_pcylinders; 293 } else 294 #endif 295 { 296 printf("%s: WARNING: no `pcyl' in disk label.\n", 297 device_xname(xy->sc_dev)); 298 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 299 xy->sc_dk.dk_label->d_acylinders; 300 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 301 device_xname(xy->sc_dev), xy->pcyl); 302 } 303 304 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 305 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 306 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 307 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 308 xy->sectpercyl = xy->nhead * xy->nsect; 309 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 310 * sun->bsd */ 311 return(XY_ERR_AOK); 312 } 313 314 /* 315 * end: disk label fix code (XXX) 316 */ 317 318 /* 319 * Shorthand for allocating, mapping and loading a DMA buffer 320 */ 321 int 322 xy_dmamem_alloc(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int *nsegp, bus_size_t len, void * *kvap, bus_addr_t *dmap) 323 { 324 int nseg; 325 int error; 326 327 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 328 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 329 return (error); 330 } 331 332 if ((error = bus_dmamem_map(tag, seg, nseg, 333 len, kvap, 334 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 335 bus_dmamem_free(tag, seg, nseg); 336 return (error); 337 } 338 339 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 340 BUS_DMA_NOWAIT)) != 0) { 341 bus_dmamem_unmap(tag, *kvap, len); 342 bus_dmamem_free(tag, seg, nseg); 343 return (error); 344 } 345 346 *dmap = map->dm_segs[0].ds_addr; 347 *nsegp = nseg; 348 return (0); 349 } 350 351 void 352 xy_dmamem_free(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int nseg, bus_size_t len, void * kva) 353 { 354 355 bus_dmamap_unload(tag, map); 356 bus_dmamem_unmap(tag, kva, len); 357 bus_dmamem_free(tag, seg, nseg); 358 } 359 360 361 /* 362 * a u t o c o n f i g f u n c t i o n s 363 */ 364 365 /* 366 * xycmatch: determine if xyc is present or not. we do a 367 * soft reset to detect the xyc. 368 */ 369 int 370 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 371 { 372 struct xyc *xyc = (void *)handle; /* XXX */ 373 374 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 375 } 376 377 int 378 xycmatch(device_t parent, cfdata_t cf, void *aux) 379 { 380 struct vme_attach_args *va = aux; 381 vme_chipset_tag_t ct = va->va_vct; 382 vme_am_t mod; 383 int error; 384 385 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 386 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 387 return (0); 388 389 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 390 mod, VME_D16, xyc_probe, 0); 391 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 392 393 return (error == 0); 394 } 395 396 /* 397 * xycattach: attach controller 398 */ 399 void 400 xycattach(device_t parent, device_t self, void *aux) 401 { 402 struct xyc_softc *xyc = device_private(self); 403 struct vme_attach_args *va = aux; 404 vme_chipset_tag_t ct = va->va_vct; 405 bus_space_tag_t bt; 406 bus_space_handle_t bh; 407 vme_intr_handle_t ih; 408 vme_am_t mod; 409 struct xyc_attach_args xa; 410 int lcv, res, error; 411 bus_dma_segment_t seg; 412 int rseg; 413 vme_mapresc_t resc; 414 bus_addr_t busaddr; 415 416 xyc->sc_dev = self; 417 418 /* get addressing and intr level stuff from autoconfig and load it 419 * into our xyc_softc. */ 420 421 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 422 423 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 424 panic("xyc: vme alloc"); 425 426 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 427 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 428 panic("xyc: vme_map"); 429 430 xyc->xyc = (struct xyc *) bh; /* XXX */ 431 xyc->ipl = va->ilevel; 432 xyc->vector = va->ivector; 433 xyc->no_ols = 0; /* XXX should be from config */ 434 435 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 436 xyc->sc_drives[lcv] = NULL; 437 438 /* 439 * allocate and zero buffers 440 * check boundaries of the KVA's ... all IOPBs must reside in 441 * the same 64K region. 442 */ 443 444 /* Get DMA handle for misc. transfers */ 445 if ((error = vme_dmamap_create( 446 ct, /* VME chip tag */ 447 MAXPHYS, /* size */ 448 VME_AM_A24, /* address modifier */ 449 VME_D16, /* data size */ 450 0, /* swap */ 451 1, /* nsegments */ 452 MAXPHYS, /* maxsegsz */ 453 0, /* boundary */ 454 BUS_DMA_NOWAIT, 455 &xyc->auxmap)) != 0) { 456 457 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 458 error); 459 return; 460 } 461 462 /* Get DMA handle for mapping iorq descriptors */ 463 if ((error = vme_dmamap_create( 464 ct, /* VME chip tag */ 465 XYC_MAXIOPB * sizeof(struct xy_iopb), 466 VME_AM_A24, /* address modifier */ 467 VME_D16, /* data size */ 468 0, /* swap */ 469 1, /* nsegments */ 470 XYC_MAXIOPB * sizeof(struct xy_iopb), 471 64*1024, /* boundary */ 472 BUS_DMA_NOWAIT, 473 &xyc->iopmap)) != 0) { 474 475 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 476 error); 477 return; 478 } 479 480 /* Get DMA buffer for iorq descriptors */ 481 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 482 XYC_MAXIOPB * sizeof(struct xy_iopb), 483 (void **)&xyc->iopbase, 484 &busaddr)) != 0) { 485 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 486 error); 487 return; 488 } 489 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 490 491 memset(xyc->iopbase, 0, XYC_MAXIOPB * sizeof(struct xy_iopb)); 492 493 xyc->reqs = malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 494 M_DEVBUF, M_WAITOK|M_ZERO); 495 496 /* 497 * init iorq to iopb pointers, and non-zero fields in the 498 * iopb which never change. 499 */ 500 501 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 502 xyc->xy_chain[lcv] = NULL; 503 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 504 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 505 xyc->iopbase[lcv].asr = 1; /* always the same */ 506 xyc->iopbase[lcv].eef = 1; /* always the same */ 507 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 508 xyc->iopbase[lcv].aud = 1; /* always the same */ 509 xyc->iopbase[lcv].relo = 1; /* always the same */ 510 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 511 512 if ((error = vme_dmamap_create( 513 ct, /* VME chip tag */ 514 MAXPHYS, /* size */ 515 VME_AM_A24, /* address modifier */ 516 VME_D16, /* data size */ 517 0, /* swap */ 518 1, /* nsegments */ 519 MAXPHYS, /* maxsegsz */ 520 0, /* boundary */ 521 BUS_DMA_NOWAIT, 522 &xyc->reqs[lcv].dmamap)) != 0) { 523 524 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 525 error); 526 return; 527 } 528 } 529 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 530 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 531 xyc->xy_hand = 0; 532 533 /* read controller parameters and insure we have a 450/451 */ 534 535 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 536 res = xyc->ciopb->ctyp; 537 XYC_DONE(xyc, error); 538 if (res != XYCT_450) { 539 if (error) 540 printf(": %s: ", xyc_e2str(error)); 541 printf(": doesn't identify as a 450/451\n"); 542 return; 543 } 544 printf(": Xylogics 450/451"); 545 if (xyc->no_ols) 546 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 547 printf("\n"); 548 if (error) { 549 aprint_error_dev(xyc->sc_dev, "error: %s\n", 550 xyc_e2str(error)); 551 return; 552 } 553 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 554 printf("%s: 24 bit addressing turned off\n", 555 device_xname(xyc->sc_dev)); 556 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 557 printf("to enable 24 bit mode and this driver\n"); 558 return; 559 } 560 561 /* link in interrupt with higher level software */ 562 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 563 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 564 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 565 device_xname(xyc->sc_dev), "intr"); 566 567 callout_init(&xyc->sc_tick_ch, 0); 568 569 /* now we must look for disks using autoconfig */ 570 xa.fullmode = XY_SUB_POLL; 571 xa.booting = 1; 572 573 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 574 (void) config_found(self, (void *) &xa, NULL, CFARGS_NONE); 575 576 /* start the watchdog clock */ 577 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 578 579 } 580 581 /* 582 * xymatch: probe for disk. 583 * 584 * note: we almost always say disk is present. this allows us to 585 * spin up and configure a disk after the system is booted (we can 586 * call xyattach!). 587 */ 588 int 589 xymatch(device_t parent, cfdata_t cf, void *aux) 590 { 591 struct xyc_attach_args *xa = aux; 592 593 /* looking for autoconf wildcard or exact match */ 594 595 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 596 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 597 return 0; 598 599 return 1; 600 601 } 602 603 /* 604 * xyattach: attach a disk. this can be called from autoconf and also 605 * from xyopen/xystrategy. 606 */ 607 void 608 xyattach(device_t parent, device_t self, void *aux) 609 { 610 struct xy_softc *xy = device_private(self), *oxy; 611 struct xyc_softc *xyc = device_private(parent); 612 struct xyc_attach_args *xa = aux; 613 int spt, mb, blk, lcv, fmode, s = 0, newstate; 614 struct dkbad *dkb; 615 int rseg, error; 616 bus_dma_segment_t seg; 617 bus_addr_t busaddr; 618 void * dmaddr; 619 char * buf; 620 621 xy->sc_dev = self; 622 623 /* 624 * Always re-initialize the disk structure. We want statistics 625 * to start with a clean slate. 626 */ 627 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 628 629 /* if booting, init the xy_softc */ 630 631 if (xa->booting) { 632 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 633 xy->flags = 0; 634 xy->parent = xyc; 635 636 /* init queue of waiting bufs */ 637 638 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 639 640 xy->xyrq = &xyc->reqs[xa->driveno]; 641 642 } 643 xy->xy_drive = xa->driveno; 644 fmode = xa->fullmode; 645 xyc->sc_drives[xa->driveno] = xy; 646 647 /* if not booting, make sure we are the only process in the attach for 648 * this drive. if locked out, sleep on it. */ 649 650 if (!xa->booting) { 651 s = splbio(); 652 while (xy->state == XY_DRIVE_ATTACHING) { 653 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 654 splx(s); 655 return; 656 } 657 } 658 printf("%s at %s", 659 device_xname(xy->sc_dev), device_xname(xy->parent->sc_dev)); 660 } 661 662 /* we now have control */ 663 xy->state = XY_DRIVE_ATTACHING; 664 newstate = XY_DRIVE_UNKNOWN; 665 666 buf = NULL; 667 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 668 XYFM_BPS, 669 (void **)&buf, 670 &busaddr)) != 0) { 671 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 672 error); 673 return; 674 } 675 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 676 677 /* first try and reset the drive */ 678 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 679 XYC_DONE(xyc, error); 680 if (error == XY_ERR_DNRY) { 681 printf(" drive %d: off-line\n", xa->driveno); 682 goto done; 683 } 684 if (error) { 685 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 686 goto done; 687 } 688 printf(" drive %d: ready", xa->driveno); 689 690 /* 691 * now set drive parameters (to semi-bogus values) so we can read the 692 * disk label. 693 */ 694 xy->pcyl = xy->ncyl = 1; 695 xy->acyl = 0; 696 xy->nhead = 1; 697 xy->nsect = 1; 698 xy->sectpercyl = 1; 699 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 700 xy->dkb.bt_bad[lcv].bt_cyl = 701 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 702 703 /* read disk label */ 704 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 705 xy->drive_type++) { 706 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 707 dmaddr, fmode); 708 XYC_DONE(xyc, error); 709 if (error == XY_ERR_AOK) break; 710 } 711 712 if (error != XY_ERR_AOK) { 713 aprint_normal("\n"); 714 aprint_error_dev(xy->sc_dev, "reading disk label failed: %s\n", 715 xyc_e2str(error)); 716 goto done; 717 } 718 printf(" (drive type %d)\n", xy->drive_type); 719 720 newstate = XY_DRIVE_NOLABEL; 721 722 xy->hw_spt = spt = 0; /* XXX needed ? */ 723 /* Attach the disk: must be before getdisklabel to malloc label */ 724 disk_init(&xy->sc_dk, device_xname(xy->sc_dev), &xydkdriver); 725 disk_attach(&xy->sc_dk); 726 727 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 728 goto done; 729 730 /* inform the user of what is up */ 731 printf("%s: <%s>, pcyl %d\n", device_xname(xy->sc_dev), 732 buf, xy->pcyl); 733 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 734 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 735 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 736 XYFM_BPS); 737 738 /* 739 * 450/451 stupidity: the drive type is encoded into the format 740 * of the disk. the drive type in the IOPB must match the drive 741 * type in the format, or you will not be able to do I/O to the 742 * disk (you get header not found errors). if you have two drives 743 * of different sizes that have the same drive type in their 744 * formatting then you are out of luck. 745 * 746 * this problem was corrected in the 753/7053. 747 */ 748 749 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 750 oxy = xyc->sc_drives[lcv]; 751 if (oxy == NULL || oxy == xy) continue; 752 if (oxy->drive_type != xy->drive_type) continue; 753 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 754 xy->nhead != oxy->nhead) { 755 printf("%s: %s and %s must be the same size!\n", 756 device_xname(xyc->sc_dev), device_xname(xy->sc_dev), 757 device_xname(oxy->sc_dev)); 758 panic("xy drive size mismatch"); 759 } 760 } 761 762 763 /* now set the real drive parameters! */ 764 765 blk = (xy->nsect - 1) + 766 ((xy->nhead - 1) * xy->nsect) + 767 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 768 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 769 XYC_DONE(xyc, error); 770 if (error) { 771 aprint_error_dev(xy->sc_dev, "write drive size failed: %s\n", 772 xyc_e2str(error)); 773 goto done; 774 } 775 newstate = XY_DRIVE_ONLINE; 776 777 /* 778 * read bad144 table. this table resides on the first sector of the 779 * last track of the disk (i.e. second cyl of "acyl" area). 780 */ 781 782 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 783 /* last cyl */ 784 (xy->nhead - 1) * xy->nsect; /* last head */ 785 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 786 dmaddr, fmode); 787 XYC_DONE(xyc, error); 788 if (error) { 789 aprint_error_dev(xy->sc_dev, "reading bad144 failed: %s\n", 790 xyc_e2str(error)); 791 goto done; 792 } 793 794 /* check dkbad for sanity */ 795 dkb = (struct dkbad *) buf; 796 for (lcv = 0; lcv < 126; lcv++) { 797 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 798 dkb->bt_bad[lcv].bt_cyl == 0) && 799 dkb->bt_bad[lcv].bt_trksec == 0xffff) 800 continue; /* blank */ 801 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 802 break; 803 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 804 break; 805 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 806 break; 807 } 808 if (lcv != 126) { 809 aprint_error_dev(xy->sc_dev, "warning: invalid bad144 sector!\n"); 810 } else { 811 memcpy(&xy->dkb, buf, XYFM_BPS); 812 } 813 814 done: 815 if (buf != NULL) { 816 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 817 &seg, rseg, XYFM_BPS, buf); 818 } 819 820 xy->state = newstate; 821 if (!xa->booting) { 822 wakeup(&xy->state); 823 splx(s); 824 } 825 } 826 827 /* 828 * end of autoconfig functions 829 */ 830 831 /* 832 * { b , c } d e v s w f u n c t i o n s 833 */ 834 835 /* 836 * xyclose: close device 837 */ 838 int 839 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 840 { 841 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 842 int part = DISKPART(dev); 843 844 /* clear mask bits */ 845 846 switch (fmt) { 847 case S_IFCHR: 848 xy->sc_dk.dk_copenmask &= ~(1 << part); 849 break; 850 case S_IFBLK: 851 xy->sc_dk.dk_bopenmask &= ~(1 << part); 852 break; 853 } 854 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 855 856 return 0; 857 } 858 859 /* 860 * xydump: crash dump system 861 */ 862 int 863 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 864 { 865 int unit, part; 866 struct xy_softc *xy; 867 868 unit = DISKUNIT(dev); 869 part = DISKPART(dev); 870 871 xy = device_lookup_private(&xy_cd, unit); 872 if (!xy) 873 return ENXIO; 874 875 printf("%s%c: crash dump not supported (yet)\n", device_xname(xy->sc_dev), 876 'a' + part); 877 878 return ENXIO; 879 880 /* outline: globals: "dumplo" == sector number of partition to start 881 * dump at (convert to physical sector with partition table) 882 * "dumpsize" == size of dump in clicks "physmem" == size of physical 883 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 884 * physmem) 885 * 886 * dump a copy of physical memory to the dump device starting at sector 887 * "dumplo" in the swap partition (make sure > 0). map in pages as 888 * we go. use polled I/O. 889 * 890 * XXX how to handle NON_CONTIG? */ 891 892 } 893 894 static enum kauth_device_req 895 xy_getkauthreq(u_char cmd) 896 { 897 enum kauth_device_req req; 898 899 switch (cmd) { 900 case XYCMD_WR: 901 case XYCMD_WTH: 902 case XYCMD_WFM: 903 case XYCMD_WRH: 904 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 905 break; 906 907 case XYCMD_RD: 908 case XYCMD_RTH: 909 case XYCMD_RDH: 910 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 911 break; 912 913 case XYCMD_RDS: 914 case XYCMD_MBD: 915 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 916 break; 917 918 case XYCMD_RST: 919 case XYCMD_SDS: 920 case XYCMD_MBL: 921 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 922 break; 923 924 case XYCMD_NOP: 925 case XYCMD_SK: 926 case XYCMD_ST: 927 case XYCMD_R: 928 default: 929 req = 0; 930 break; 931 } 932 933 return (req); 934 } 935 936 /* 937 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 938 */ 939 int 940 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 941 { 942 struct xy_softc *xy; 943 struct xd_iocmd *xio; 944 int error, s, unit; 945 #ifdef __HAVE_OLD_DISKLABEL 946 struct disklabel newlabel; 947 #endif 948 struct disklabel *lp; 949 950 unit = DISKUNIT(dev); 951 952 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 953 return (ENXIO); 954 955 error = disk_ioctl(&xy->sc_dk, dev, command, addr, flag, l); 956 if (error != EPASSTHROUGH) 957 return error; 958 959 /* switch on ioctl type */ 960 961 switch (command) { 962 case DIOCSBAD: /* set bad144 info */ 963 if ((flag & FWRITE) == 0) 964 return EBADF; 965 s = splbio(); 966 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 967 splx(s); 968 return 0; 969 970 case DIOCSDINFO: /* set disk label */ 971 #ifdef __HAVE_OLD_DISKLABEL 972 case ODIOCSDINFO: 973 if (command == ODIOCSDINFO) { 974 memset(&newlabel, 0, sizeof newlabel); 975 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 976 lp = &newlabel; 977 } else 978 #endif 979 lp = (struct disklabel *)addr; 980 981 if ((flag & FWRITE) == 0) 982 return EBADF; 983 error = setdisklabel(xy->sc_dk.dk_label, 984 lp, /* xy->sc_dk.dk_openmask : */ 0, 985 xy->sc_dk.dk_cpulabel); 986 if (error == 0) { 987 if (xy->state == XY_DRIVE_NOLABEL) 988 xy->state = XY_DRIVE_ONLINE; 989 } 990 return error; 991 992 case DIOCWLABEL: /* change write status of disk label */ 993 if ((flag & FWRITE) == 0) 994 return EBADF; 995 if (*(int *) addr) 996 xy->flags |= XY_WLABEL; 997 else 998 xy->flags &= ~XY_WLABEL; 999 return 0; 1000 1001 case DIOCWDINFO: /* write disk label */ 1002 #ifdef __HAVE_OLD_DISKLABEL 1003 case ODIOCWDINFO: 1004 if (command == ODIOCWDINFO) { 1005 memset(&newlabel, 0, sizeof newlabel); 1006 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1007 lp = &newlabel; 1008 } else 1009 #endif 1010 lp = (struct disklabel *)addr; 1011 1012 if ((flag & FWRITE) == 0) 1013 return EBADF; 1014 error = setdisklabel(xy->sc_dk.dk_label, 1015 lp, /* xy->sc_dk.dk_openmask : */ 0, 1016 xy->sc_dk.dk_cpulabel); 1017 if (error == 0) { 1018 if (xy->state == XY_DRIVE_NOLABEL) 1019 xy->state = XY_DRIVE_ONLINE; 1020 1021 /* Simulate opening partition 0 so write succeeds. */ 1022 xy->sc_dk.dk_openmask |= (1 << 0); 1023 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1024 xystrategy, xy->sc_dk.dk_label, 1025 xy->sc_dk.dk_cpulabel); 1026 xy->sc_dk.dk_openmask = 1027 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1028 } 1029 return error; 1030 1031 case DIOSXDCMD: { 1032 enum kauth_device_req req; 1033 1034 xio = (struct xd_iocmd *) addr; 1035 req = xy_getkauthreq(xio->cmd); 1036 if ((error = kauth_authorize_device_passthru(l->l_cred, 1037 dev, req, xio)) != 0) 1038 return (error); 1039 return (xyc_ioctlcmd(xy, dev, xio)); 1040 } 1041 1042 default: 1043 return ENOTTY; 1044 } 1045 } 1046 1047 /* 1048 * xyopen: open drive 1049 */ 1050 1051 int 1052 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1053 { 1054 int unit, part; 1055 struct xy_softc *xy; 1056 struct xyc_attach_args xa; 1057 1058 /* first, could it be a valid target? */ 1059 1060 unit = DISKUNIT(dev); 1061 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1062 return (ENXIO); 1063 part = DISKPART(dev); 1064 1065 /* do we need to attach the drive? */ 1066 1067 if (xy->state == XY_DRIVE_UNKNOWN) { 1068 xa.driveno = xy->xy_drive; 1069 xa.fullmode = XY_SUB_WAIT; 1070 xa.booting = 0; 1071 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1072 if (xy->state == XY_DRIVE_UNKNOWN) { 1073 return (EIO); 1074 } 1075 } 1076 /* check for partition */ 1077 1078 if (part != RAW_PART && 1079 (part >= xy->sc_dk.dk_label->d_npartitions || 1080 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1081 return (ENXIO); 1082 } 1083 /* set open masks */ 1084 1085 switch (fmt) { 1086 case S_IFCHR: 1087 xy->sc_dk.dk_copenmask |= (1 << part); 1088 break; 1089 case S_IFBLK: 1090 xy->sc_dk.dk_bopenmask |= (1 << part); 1091 break; 1092 } 1093 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1094 1095 return 0; 1096 } 1097 1098 int 1099 xyread(dev_t dev, struct uio *uio, int flags) 1100 { 1101 1102 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1103 } 1104 1105 int 1106 xywrite(dev_t dev, struct uio *uio, int flags) 1107 { 1108 1109 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1110 } 1111 1112 1113 /* 1114 * xysize: return size of a partition for a dump 1115 */ 1116 1117 int 1118 xysize(dev_t dev) 1119 { 1120 struct xy_softc *xysc; 1121 int unit, part, size, omask; 1122 1123 /* valid unit? */ 1124 unit = DISKUNIT(dev); 1125 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1126 return (-1); 1127 1128 part = DISKPART(dev); 1129 omask = xysc->sc_dk.dk_openmask & (1 << part); 1130 1131 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1132 return (-1); 1133 1134 /* do it */ 1135 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1136 size = -1; /* only give valid size for swap partitions */ 1137 else 1138 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1139 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1140 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1141 return (-1); 1142 return (size); 1143 } 1144 1145 /* 1146 * xystrategy: buffering system interface to xy. 1147 */ 1148 1149 void 1150 xystrategy(struct buf *bp) 1151 { 1152 struct xy_softc *xy; 1153 int s, unit; 1154 struct xyc_attach_args xa; 1155 struct disklabel *lp; 1156 daddr_t blkno; 1157 1158 unit = DISKUNIT(bp->b_dev); 1159 1160 /* check for live device */ 1161 1162 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1163 bp->b_blkno < 0 || 1164 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1165 bp->b_error = EINVAL; 1166 goto done; 1167 } 1168 /* do we need to attach the drive? */ 1169 1170 if (xy->state == XY_DRIVE_UNKNOWN) { 1171 xa.driveno = xy->xy_drive; 1172 xa.fullmode = XY_SUB_WAIT; 1173 xa.booting = 0; 1174 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1175 if (xy->state == XY_DRIVE_UNKNOWN) { 1176 bp->b_error = EIO; 1177 goto done; 1178 } 1179 } 1180 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1181 /* no I/O to unlabeled disks, unless raw partition */ 1182 bp->b_error = EIO; 1183 goto done; 1184 } 1185 /* short circuit zero length request */ 1186 1187 if (bp->b_bcount == 0) 1188 goto done; 1189 1190 /* check bounds with label (disksubr.c). Determine the size of the 1191 * transfer, and make sure it is within the boundaries of the 1192 * partition. Adjust transfer if needed, and signal errors or early 1193 * completion. */ 1194 1195 lp = xy->sc_dk.dk_label; 1196 1197 if (bounds_check_with_label(&xy->sc_dk, bp, 1198 (xy->flags & XY_WLABEL) != 0) <= 0) 1199 goto done; 1200 1201 /* 1202 * Now convert the block number to absolute and put it in 1203 * terms of the device's logical block size. 1204 */ 1205 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1206 if (DISKPART(bp->b_dev) != RAW_PART) 1207 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1208 1209 bp->b_rawblkno = blkno; 1210 1211 /* 1212 * now we know we have a valid buf structure that we need to do I/O 1213 * on. 1214 */ 1215 s = splbio(); /* protect the queues */ 1216 1217 bufq_put(xy->xyq, bp); 1218 1219 /* start 'em up */ 1220 1221 xyc_start(xy->parent, NULL); 1222 1223 /* done! */ 1224 1225 splx(s); 1226 return; 1227 1228 done: /* tells upper layers we are done with this 1229 * buf */ 1230 bp->b_resid = bp->b_bcount; 1231 biodone(bp); 1232 } 1233 /* 1234 * end of {b,c}devsw functions 1235 */ 1236 1237 /* 1238 * i n t e r r u p t f u n c t i o n 1239 * 1240 * xycintr: hardware interrupt. 1241 */ 1242 int 1243 xycintr(void *v) 1244 { 1245 struct xyc_softc *xycsc = v; 1246 1247 /* kick the event counter */ 1248 1249 xycsc->sc_intrcnt.ev_count++; 1250 1251 /* remove as many done IOPBs as possible */ 1252 1253 xyc_remove_iorq(xycsc); 1254 1255 /* start any iorq's already waiting */ 1256 1257 xyc_start(xycsc, NULL); 1258 1259 return (1); 1260 } 1261 /* 1262 * end of interrupt function 1263 */ 1264 1265 /* 1266 * i n t e r n a l f u n c t i o n s 1267 */ 1268 1269 /* 1270 * xyc_rqinit: fill out the fields of an I/O request 1271 */ 1272 1273 inline void 1274 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, int md, u_long blk, int cnt, void *db, struct buf *bp) 1275 { 1276 rq->xyc = xyc; 1277 rq->xy = xy; 1278 rq->ttl = XYC_MAXTTL + 10; 1279 rq->mode = md; 1280 rq->tries = rq->errnum = rq->lasterror = 0; 1281 rq->blockno = blk; 1282 rq->sectcnt = cnt; 1283 rq->dbuf = db; 1284 rq->buf = bp; 1285 } 1286 1287 /* 1288 * xyc_rqtopb: load up an IOPB based on an iorq 1289 */ 1290 1291 void 1292 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1293 { 1294 u_long block, dp; 1295 1296 /* normal IOPB case, standard stuff */ 1297 1298 /* chain bit handled later */ 1299 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1300 iopb->com = cmd; 1301 iopb->errnum = 0; 1302 iopb->errs = 0; 1303 iopb->done = 0; 1304 if (iorq->xy) { 1305 iopb->unit = iorq->xy->xy_drive; 1306 iopb->dt = iorq->xy->drive_type; 1307 } else { 1308 iopb->unit = 0; 1309 iopb->dt = 0; 1310 } 1311 block = iorq->blockno; 1312 if (iorq->xy == NULL || block == 0) { 1313 iopb->sect = iopb->head = iopb->cyl = 0; 1314 } else { 1315 iopb->sect = block % iorq->xy->nsect; 1316 block = block / iorq->xy->nsect; 1317 iopb->head = block % iorq->xy->nhead; 1318 block = block / iorq->xy->nhead; 1319 iopb->cyl = block; 1320 } 1321 iopb->scnt = iorq->sectcnt; 1322 dp = (u_long) iorq->dbuf; 1323 if (iorq->dbuf == NULL) { 1324 iopb->dataa = 0; 1325 iopb->datar = 0; 1326 } else { 1327 iopb->dataa = (dp & 0xffff); 1328 iopb->datar = ((dp & 0xff0000) >> 16); 1329 } 1330 iopb->subfn = subfun; 1331 } 1332 1333 1334 /* 1335 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1336 */ 1337 1338 int 1339 xyc_unbusy(struct xyc *xyc, int del) 1340 { 1341 while (del-- > 0) { 1342 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1343 break; 1344 DELAY(1); 1345 } 1346 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1347 } 1348 1349 /* 1350 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1351 * note that NORM requests are handled separately. 1352 */ 1353 int 1354 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1355 int scnt, char *dptr, int fullmode) 1356 { 1357 int submode = XY_STATE(fullmode); 1358 struct xy_iorq *iorq = xycsc->ciorq; 1359 struct xy_iopb *iopb = xycsc->ciopb; 1360 1361 /* 1362 * is someone else using the control iopq wait for it if we can 1363 */ 1364 start: 1365 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1366 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1367 return(XY_ERR_FAIL); 1368 goto start; 1369 } 1370 1371 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1372 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1373 iorq->mode = XY_SUB_FREE; 1374 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1375 } 1376 1377 /* init iorq/iopb */ 1378 1379 xyc_rqinit(iorq, xycsc, 1380 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1381 fullmode, block, scnt, dptr, NULL); 1382 1383 /* load IOPB from iorq */ 1384 1385 xyc_rqtopb(iorq, iopb, cmd, subfn); 1386 1387 /* submit it for processing */ 1388 1389 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1390 1391 return(XY_ERR_AOK); 1392 } 1393 1394 /* 1395 * xyc_startbuf 1396 * start a buffer for running 1397 */ 1398 1399 int 1400 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1401 { 1402 #ifdef XYC_DEBUG 1403 int partno; 1404 #endif 1405 int error; 1406 struct xy_iorq *iorq; 1407 struct xy_iopb *iopb; 1408 u_long block; 1409 1410 iorq = xysc->xyrq; 1411 iopb = iorq->iopb; 1412 1413 /* get buf */ 1414 1415 if (bp == NULL) 1416 panic("xyc_startbuf null buf"); 1417 1418 #ifdef XYC_DEBUG 1419 partno = DISKPART(bp->b_dev); 1420 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1421 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1422 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1423 bp->b_bcount, bp->b_data); 1424 #endif 1425 1426 /* 1427 * load request. 1428 * 1429 * note that iorq points to the buffer as mapped into DVMA space, 1430 * where as the bp->b_data points to its non-DVMA mapping. 1431 */ 1432 1433 block = bp->b_rawblkno; 1434 1435 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1436 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1437 if (error != 0) { 1438 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1439 return (XY_ERR_FAIL); /* XXX: need some sort of 1440 * call-back scheme here? */ 1441 } 1442 1443 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1444 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1445 ? BUS_DMASYNC_PREREAD 1446 : BUS_DMASYNC_PREWRITE); 1447 1448 /* init iorq and load iopb from it */ 1449 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1450 bp->b_bcount / XYFM_BPS, 1451 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1452 bp); 1453 1454 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1455 1456 /* Instrumentation. */ 1457 disk_busy(&xysc->sc_dk); 1458 1459 return (XY_ERR_AOK); 1460 } 1461 1462 1463 /* 1464 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1465 * if ok. if it fail returns an error code. type is XY_SUB_*. 1466 * 1467 * note: caller frees iorq in all cases except NORM 1468 * 1469 * return value: 1470 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1471 * WAIT: XY_AOK (success), <error-code> (failed) 1472 * POLL: <same as WAIT> 1473 * NOQ : <same as NORM> 1474 * 1475 * there are three sources for i/o requests: 1476 * [1] xystrategy: normal block I/O, using "struct buf" system. 1477 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1478 * [3] open/ioctl: these are I/O requests done in the context of a process, 1479 * and the process should block until they are done. 1480 * 1481 * software state is stored in the iorq structure. each iorq has an 1482 * iopb structure. the hardware understands the iopb structure. 1483 * every command must go through an iopb. a 450 handles one iopb at a 1484 * time, where as a 451 can take them in chains. [the 450 claims it 1485 * can handle chains, but is appears to be buggy...] iopb are allocated 1486 * in DVMA space at boot up time. each disk gets one iopb, and the 1487 * controller gets one (for POLL and WAIT commands). what happens if 1488 * the iopb is busy? for i/o type [1], the buffers are queued at the 1489 * "buff" layer and * picked up later by the interrupt routine. for case 1490 * [2] we can only be blocked if there is a WAIT type I/O request being 1491 * run. since this can only happen when we are crashing, we wait a sec 1492 * and then steal the IOPB. for case [3] the process can sleep 1493 * on the iorq free list until some iopbs are available. 1494 */ 1495 1496 1497 int 1498 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1499 { 1500 struct xy_iopb *dmaiopb; 1501 1502 #ifdef XYC_DEBUG 1503 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1504 device_xname(xycsc->sc_dev), iorq, type); 1505 #endif 1506 1507 /* first check and see if controller is busy */ 1508 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1509 #ifdef XYC_DEBUG 1510 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1511 #endif 1512 if (type == XY_SUB_NOQ) 1513 return (XY_ERR_FAIL); /* failed */ 1514 switch (type) { 1515 case XY_SUB_NORM: 1516 return XY_ERR_AOK; /* success */ 1517 case XY_SUB_WAIT: 1518 while (iorq->iopb->done == 0) { 1519 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1520 } 1521 return (iorq->errnum); 1522 case XY_SUB_POLL: /* steal controller */ 1523 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1524 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1525 panic("xyc_submit_iorq: stuck xyc"); 1526 printf("%s: stole controller\n", 1527 device_xname(xycsc->sc_dev)); 1528 break; 1529 default: 1530 panic("xyc_submit_iorq adding"); 1531 } 1532 } 1533 1534 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1535 if (dmaiopb == NULL) { /* nothing doing? */ 1536 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1537 return(XY_ERR_AOK); 1538 panic("xyc_submit_iorq: xyc_chain failed!"); 1539 } 1540 1541 XYC_GO(xycsc->xyc, dmaiopb); 1542 1543 /* command now running, wrap it up */ 1544 switch (type) { 1545 case XY_SUB_NORM: 1546 case XY_SUB_NOQ: 1547 return (XY_ERR_AOK); /* success */ 1548 case XY_SUB_WAIT: 1549 while (iorq->iopb->done == 0) { 1550 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1551 } 1552 return (iorq->errnum); 1553 case XY_SUB_POLL: 1554 return (xyc_piodriver(xycsc, iorq)); 1555 default: 1556 panic("xyc_submit_iorq wrap up"); 1557 } 1558 panic("xyc_submit_iorq"); 1559 return 0; /* not reached */ 1560 } 1561 1562 1563 /* 1564 * xyc_chain: build a chain. return dvma address of first element in 1565 * the chain. iorq != NULL: means we only want that item on the chain. 1566 */ 1567 1568 struct xy_iopb * 1569 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1570 { 1571 int togo, chain, hand; 1572 1573 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1574 1575 /* 1576 * promote control IOPB to the top 1577 */ 1578 if (iorq == NULL) { 1579 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1580 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1581 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1582 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1583 } 1584 1585 /* 1586 * special case: if iorq != NULL then we have a POLL or WAIT request. 1587 * we let these take priority and do them first. 1588 */ 1589 if (iorq) { 1590 xycsc->xy_chain[0] = iorq; 1591 iorq->iopb->chen = 0; 1592 return(iorq->dmaiopb); 1593 } 1594 1595 /* 1596 * NORM case: do round robin and maybe chain (if allowed and possible) 1597 */ 1598 chain = 0; 1599 hand = xycsc->xy_hand; 1600 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1601 1602 for (togo = XYC_MAXIOPB; togo > 0; 1603 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1604 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1605 1606 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1607 xycsc->iopbase[hand].done) 1608 continue; /* not ready-for-i/o */ 1609 1610 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1611 iopb = xycsc->xy_chain[chain]->iopb; 1612 iopb->chen = 0; 1613 if (chain != 0) { 1614 /* adding a link to a chain */ 1615 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1616 prev_iopb->chen = 1; 1617 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1618 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1619 } else { 1620 /* head of chain */ 1621 iorq = xycsc->xy_chain[chain]; 1622 } 1623 chain++; 1624 1625 /* quit if chaining dis-allowed */ 1626 if (xycsc->no_ols) 1627 break; 1628 } 1629 1630 return(iorq ? iorq->dmaiopb : NULL); 1631 } 1632 1633 /* 1634 * xyc_piodriver 1635 * 1636 * programmed i/o driver. this function takes over the computer 1637 * and drains off the polled i/o request. it returns the status of the iorq 1638 * the caller is interesting in. 1639 */ 1640 int 1641 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1642 { 1643 int nreset = 0; 1644 int retval = 0; 1645 u_long res; 1646 #ifdef XYC_DEBUG 1647 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1648 #endif 1649 1650 while (iorq->iopb->done == 0) { 1651 1652 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1653 1654 /* we expect some progress soon */ 1655 if (res == XY_ERR_FAIL && nreset >= 2) { 1656 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1657 #ifdef XYC_DEBUG 1658 printf("xyc_piodriver: timeout\n"); 1659 #endif 1660 return (XY_ERR_FAIL); 1661 } 1662 if (res == XY_ERR_FAIL) { 1663 if (xyc_reset(xycsc, 0, 1664 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1665 XY_ERR_FAIL, 1666 0) == XY_ERR_FAIL) 1667 return (XY_ERR_FAIL); /* flushes all but POLL 1668 * requests, resets */ 1669 continue; 1670 } 1671 1672 xyc_remove_iorq(xycsc); /* may resubmit request */ 1673 1674 if (iorq->iopb->done == 0) 1675 xyc_start(xycsc, iorq); 1676 } 1677 1678 /* get return value */ 1679 1680 retval = iorq->errnum; 1681 1682 #ifdef XYC_DEBUG 1683 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1684 iorq->errnum, xyc_e2str(iorq->errnum)); 1685 #endif 1686 1687 /* start up any bufs that have queued */ 1688 1689 xyc_start(xycsc, NULL); 1690 1691 return (retval); 1692 } 1693 1694 /* 1695 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1696 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1697 */ 1698 void 1699 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1700 { 1701 struct xy_iopb tmpiopb; 1702 struct xy_iopb *iopb; 1703 int del; 1704 1705 iopb = xycsc->ciopb; 1706 1707 /* Save contents */ 1708 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1709 1710 iopb->chen = iopb->done = iopb->errs = 0; 1711 iopb->ien = 0; 1712 iopb->com = XYCMD_RST; 1713 iopb->unit = xysc->xy_drive; 1714 1715 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1716 1717 del = XYC_RESETUSEC; 1718 while (del > 0) { 1719 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1720 break; 1721 DELAY(1); 1722 del--; 1723 } 1724 1725 if (del <= 0 || iopb->errs) { 1726 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1727 xyc_e2str(iopb->errnum)); 1728 del = xycsc->xyc->xyc_rsetup; 1729 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1730 panic("xyc_reset"); 1731 } else { 1732 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1733 } 1734 1735 /* Restore contents */ 1736 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1737 } 1738 1739 1740 /* 1741 * xyc_reset: reset everything: requests are marked as errors except 1742 * a polled request (which is resubmitted) 1743 */ 1744 int 1745 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1746 int error, struct xy_softc *xysc) 1747 { 1748 int del = 0, lcv, retval = XY_ERR_AOK; 1749 1750 /* soft reset hardware */ 1751 1752 if (!quiet) 1753 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1754 del = xycsc->xyc->xyc_rsetup; 1755 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1756 if (del == XY_ERR_FAIL) { 1757 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1758 retval = XY_ERR_FAIL; 1759 } 1760 if (xysc) 1761 xyc_xyreset(xycsc, xysc); 1762 1763 /* fix queues based on "blast-mode" */ 1764 1765 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1766 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1767 1768 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1769 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1770 XY_STATE(iorq->mode) != XY_SUB_NORM) 1771 /* is it active? */ 1772 continue; 1773 1774 if (blastmode == XY_RSET_ALL || 1775 blastmode != iorq) { 1776 /* failed */ 1777 iorq->errnum = error; 1778 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1779 switch (XY_STATE(iorq->mode)) { 1780 case XY_SUB_NORM: 1781 iorq->buf->b_error = EIO; 1782 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1783 1784 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1785 iorq->dmamap->dm_mapsize, 1786 (iorq->buf->b_flags & B_READ) 1787 ? BUS_DMASYNC_POSTREAD 1788 : BUS_DMASYNC_POSTWRITE); 1789 1790 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1791 1792 (void)bufq_get(iorq->xy->xyq); 1793 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1794 (xycsc->reqs[lcv].buf->b_bcount - 1795 xycsc->reqs[lcv].buf->b_resid), 1796 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1797 biodone(iorq->buf); 1798 iorq->mode = XY_SUB_FREE; 1799 break; 1800 case XY_SUB_WAIT: 1801 wakeup(iorq); 1802 case XY_SUB_POLL: 1803 iorq->mode = 1804 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1805 break; 1806 } 1807 1808 } else { 1809 1810 /* resubmit, no need to do anything here */ 1811 } 1812 } 1813 1814 /* 1815 * now, if stuff is waiting, start it. 1816 * since we just reset it should go 1817 */ 1818 xyc_start(xycsc, NULL); 1819 1820 return (retval); 1821 } 1822 1823 /* 1824 * xyc_start: start waiting buffers 1825 */ 1826 1827 void 1828 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1829 { 1830 int lcv; 1831 struct xy_softc *xy; 1832 1833 if (iorq == NULL) { 1834 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1835 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1836 if (bufq_peek(xy->xyq) == NULL) continue; 1837 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1838 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1839 } 1840 } 1841 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1842 } 1843 1844 /* 1845 * xyc_remove_iorq: remove "done" IOPB's. 1846 */ 1847 1848 int 1849 xyc_remove_iorq(struct xyc_softc *xycsc) 1850 { 1851 int errnum, rq, comm, errs; 1852 struct xyc *xyc = xycsc->xyc; 1853 u_long addr; 1854 struct xy_iopb *iopb; 1855 struct xy_iorq *iorq; 1856 struct buf *bp; 1857 1858 if (xyc->xyc_csr & XYC_DERR) { 1859 /* 1860 * DOUBLE ERROR: should never happen under normal use. This 1861 * error is so bad, you can't even tell which IOPB is bad, so 1862 * we dump them all. 1863 */ 1864 errnum = XY_ERR_DERR; 1865 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1866 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1867 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1868 panic("xyc_remove_iorq: controller DEAD"); 1869 } 1870 return (XY_ERR_AOK); 1871 } 1872 1873 /* 1874 * get iopb that is done, loop down the chain 1875 */ 1876 1877 if (xyc->xyc_csr & XYC_ERR) { 1878 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1879 } 1880 if (xyc->xyc_csr & XYC_IPND) { 1881 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1882 } 1883 1884 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1885 iorq = xycsc->xy_chain[rq]; 1886 if (iorq == NULL) break; /* done ! */ 1887 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1888 continue; /* free, or done */ 1889 iopb = iorq->iopb; 1890 if (iopb->done == 0) 1891 continue; /* not done yet */ 1892 1893 comm = iopb->com; 1894 errs = iopb->errs; 1895 1896 if (errs) 1897 iorq->errnum = iopb->errnum; 1898 else 1899 iorq->errnum = 0; 1900 1901 /* handle non-fatal errors */ 1902 1903 if (errs && 1904 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1905 continue; /* AOK: we resubmitted it */ 1906 1907 1908 /* this iorq is now done (hasn't been restarted or anything) */ 1909 1910 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1911 xyc_perror(iorq, iopb, 0); 1912 1913 /* now, if read/write check to make sure we got all the data 1914 * we needed. (this may not be the case if we got an error in 1915 * the middle of a multisector request). */ 1916 1917 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1918 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1919 /* we just successfully processed a bad144 sector 1920 * note: if we are in bad 144 mode, the pointers have 1921 * been advanced already (see above) and are pointing 1922 * at the bad144 sector. to exit bad144 mode, we 1923 * must advance the pointers 1 sector and issue a new 1924 * request if there are still sectors left to process 1925 * 1926 */ 1927 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1928 1929 /* exit b144 mode */ 1930 iorq->mode = iorq->mode & (~XY_MODE_B144); 1931 1932 if (iorq->sectcnt) { /* more to go! */ 1933 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1934 iopb->errs = iopb->done = 0; 1935 iorq->tries = 0; 1936 iopb->scnt = iorq->sectcnt; 1937 iopb->cyl = iorq->blockno / 1938 iorq->xy->sectpercyl; 1939 iopb->head = 1940 (iorq->blockno / iorq->xy->nhead) % 1941 iorq->xy->nhead; 1942 iopb->sect = iorq->blockno % XYFM_BPS; 1943 addr = (u_long) iorq->dbuf; 1944 iopb->dataa = (addr & 0xffff); 1945 iopb->datar = ((addr & 0xff0000) >> 16); 1946 /* will resubit at end */ 1947 continue; 1948 } 1949 } 1950 /* final cleanup, totally done with this request */ 1951 1952 switch (XY_STATE(iorq->mode)) { 1953 case XY_SUB_NORM: 1954 bp = iorq->buf; 1955 if (errs) { 1956 bp->b_error = EIO; 1957 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1958 } else { 1959 bp->b_resid = 0; /* done */ 1960 } 1961 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1962 iorq->dmamap->dm_mapsize, 1963 (iorq->buf->b_flags & B_READ) 1964 ? BUS_DMASYNC_POSTREAD 1965 : BUS_DMASYNC_POSTWRITE); 1966 1967 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1968 1969 (void)bufq_get(iorq->xy->xyq); 1970 disk_unbusy(&iorq->xy->sc_dk, 1971 (bp->b_bcount - bp->b_resid), 1972 (bp->b_flags & B_READ)); 1973 iorq->mode = XY_SUB_FREE; 1974 biodone(bp); 1975 break; 1976 case XY_SUB_WAIT: 1977 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1978 wakeup(iorq); 1979 break; 1980 case XY_SUB_POLL: 1981 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1982 break; 1983 } 1984 } 1985 1986 return (XY_ERR_AOK); 1987 } 1988 1989 /* 1990 * xyc_perror: print error. 1991 * - if still_trying is true: we got an error, retried and got a 1992 * different error. in that case lasterror is the old error, 1993 * and errnum is the new one. 1994 * - if still_trying is not true, then if we ever had an error it 1995 * is in lasterror. also, if iorq->errnum == 0, then we recovered 1996 * from that error (otherwise iorq->errnum == iorq->lasterror). 1997 */ 1998 void 1999 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 2000 { 2001 2002 int error = iorq->lasterror; 2003 2004 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2005 : device_xname(iorq->xyc->sc_dev)); 2006 if (iorq->buf) 2007 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2008 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2009 printf("%s %d/%d/%d: ", 2010 (iopb->com == XYCMD_RD) ? "read" : "write", 2011 iopb->cyl, iopb->head, iopb->sect); 2012 printf("%s", xyc_e2str(error)); 2013 2014 if (still_trying) 2015 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2016 else 2017 if (iorq->errnum == 0) 2018 printf(" [recovered in %d tries]", iorq->tries); 2019 2020 printf("\n"); 2021 } 2022 2023 /* 2024 * xyc_error: non-fatal error encountered... recover. 2025 * return AOK if resubmitted, return FAIL if this iopb is done 2026 */ 2027 int 2028 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2029 int comm) 2030 { 2031 int errnum = iorq->errnum; 2032 int erract = xyc_entoact(errnum); 2033 int oldmode, advance; 2034 #ifdef __sparc__ 2035 int i; 2036 #endif 2037 2038 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2039 oldmode = iorq->mode; 2040 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2041 /* make xyc_start ignore us */ 2042 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2043 iorq->mode = oldmode; 2044 } 2045 /* check for read/write to a sector in bad144 table if bad: redirect 2046 * request to bad144 area */ 2047 2048 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2049 (iorq->mode & XY_MODE_B144) == 0) { 2050 advance = iorq->sectcnt - iopb->scnt; 2051 XYC_ADVANCE(iorq, advance); 2052 #ifdef __sparc__ 2053 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2054 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2055 iorq->blockno % iorq->xy->nsect)) != -1) { 2056 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2057 * redirect */ 2058 iopb->errnum = iopb->done = iopb->errs = 0; 2059 iopb->scnt = 1; 2060 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2061 /* second to last acyl */ 2062 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2063 * standard */ 2064 iopb->head = i / iorq->xy->nhead; 2065 iopb->sect = i % iorq->xy->nhead; 2066 /* will resubmit when we come out of remove_iorq */ 2067 return (XY_ERR_AOK); /* recovered! */ 2068 } 2069 #endif 2070 } 2071 2072 /* 2073 * it isn't a bad144 sector, must be real error! see if we can retry 2074 * it? 2075 */ 2076 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2077 xyc_perror(iorq, iopb, 1); /* inform of error state 2078 * change */ 2079 iorq->lasterror = errnum; 2080 2081 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2082 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2083 iorq->tries++; 2084 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2085 /* will resubmit at end of remove_iorq */ 2086 return (XY_ERR_AOK); /* recovered! */ 2087 } 2088 2089 /* failed to recover from this error */ 2090 return (XY_ERR_FAIL); 2091 } 2092 2093 /* 2094 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2095 */ 2096 void 2097 xyc_tick(void *arg) 2098 { 2099 struct xyc_softc *xycsc = arg; 2100 int lcv, s, reset = 0; 2101 2102 /* reduce ttl for each request if one goes to zero, reset xyc */ 2103 s = splbio(); 2104 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2105 if (xycsc->reqs[lcv].mode == 0 || 2106 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2107 continue; 2108 xycsc->reqs[lcv].ttl--; 2109 if (xycsc->reqs[lcv].ttl == 0) 2110 reset = 1; 2111 } 2112 if (reset) { 2113 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2114 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2115 } 2116 splx(s); 2117 2118 /* until next time */ 2119 2120 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2121 } 2122 2123 /* 2124 * xyc_ioctlcmd: this function provides a user level interface to the 2125 * controller via ioctl. this allows "format" programs to be written 2126 * in user code, and is also useful for some debugging. we return 2127 * an error code. called at user priority. 2128 * 2129 * XXX missing a few commands (see the 7053 driver for ideas) 2130 */ 2131 int 2132 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2133 { 2134 int s, rqno, dummy = 0; 2135 char *dvmabuf = NULL, *buf = NULL; 2136 struct xyc_softc *xycsc; 2137 int rseg, error; 2138 bus_dma_segment_t seg; 2139 2140 /* check sanity of requested command */ 2141 2142 switch (xio->cmd) { 2143 2144 case XYCMD_NOP: /* no op: everything should be zero */ 2145 if (xio->subfn || xio->dptr || xio->dlen || 2146 xio->block || xio->sectcnt) 2147 return (EINVAL); 2148 break; 2149 2150 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2151 case XYCMD_WR: 2152 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2153 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2154 return (EINVAL); 2155 break; 2156 2157 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2158 return (EINVAL); 2159 2160 break; 2161 2162 default: 2163 return (EINVAL);/* ??? */ 2164 } 2165 2166 xycsc = xy->parent; 2167 2168 /* create DVMA buffer for request if needed */ 2169 if (xio->dlen) { 2170 bus_addr_t busbuf; 2171 2172 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2173 &seg, &rseg, 2174 xio->dlen, (void **)&buf, 2175 &busbuf)) != 0) { 2176 return (error); 2177 } 2178 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2179 2180 if (xio->cmd == XYCMD_WR) { 2181 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2182 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2183 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2184 return (error); 2185 } 2186 } 2187 } 2188 /* do it! */ 2189 2190 error = 0; 2191 s = splbio(); 2192 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2193 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2194 if (rqno == XY_ERR_FAIL) { 2195 error = EIO; 2196 goto done; 2197 } 2198 xio->errnum = xycsc->ciorq->errnum; 2199 xio->tries = xycsc->ciorq->tries; 2200 XYC_DONE(xycsc, dummy); 2201 2202 if (xio->cmd == XYCMD_RD) 2203 error = copyout(buf, xio->dptr, xio->dlen); 2204 2205 done: 2206 splx(s); 2207 if (dvmabuf) { 2208 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2209 xio->dlen, buf); 2210 } 2211 return (error); 2212 } 2213 2214 /* 2215 * xyc_e2str: convert error code number into an error string 2216 */ 2217 const char * 2218 xyc_e2str(int no) 2219 { 2220 switch (no) { 2221 case XY_ERR_FAIL: 2222 return ("Software fatal error"); 2223 case XY_ERR_DERR: 2224 return ("DOUBLE ERROR"); 2225 case XY_ERR_AOK: 2226 return ("Successful completion"); 2227 case XY_ERR_IPEN: 2228 return("Interrupt pending"); 2229 case XY_ERR_BCFL: 2230 return("Busy conflict"); 2231 case XY_ERR_TIMO: 2232 return("Operation timeout"); 2233 case XY_ERR_NHDR: 2234 return("Header not found"); 2235 case XY_ERR_HARD: 2236 return("Hard ECC error"); 2237 case XY_ERR_ICYL: 2238 return("Illegal cylinder address"); 2239 case XY_ERR_ISEC: 2240 return("Illegal sector address"); 2241 case XY_ERR_SMAL: 2242 return("Last sector too small"); 2243 case XY_ERR_SACK: 2244 return("Slave ACK error (non-existent memory)"); 2245 case XY_ERR_CHER: 2246 return("Cylinder and head/header error"); 2247 case XY_ERR_SRTR: 2248 return("Auto-seek retry successful"); 2249 case XY_ERR_WPRO: 2250 return("Write-protect error"); 2251 case XY_ERR_UIMP: 2252 return("Unimplemented command"); 2253 case XY_ERR_DNRY: 2254 return("Drive not ready"); 2255 case XY_ERR_SZER: 2256 return("Sector count zero"); 2257 case XY_ERR_DFLT: 2258 return("Drive faulted"); 2259 case XY_ERR_ISSZ: 2260 return("Illegal sector size"); 2261 case XY_ERR_SLTA: 2262 return("Self test A"); 2263 case XY_ERR_SLTB: 2264 return("Self test B"); 2265 case XY_ERR_SLTC: 2266 return("Self test C"); 2267 case XY_ERR_SOFT: 2268 return("Soft ECC error"); 2269 case XY_ERR_SFOK: 2270 return("Soft ECC error recovered"); 2271 case XY_ERR_IHED: 2272 return("Illegal head"); 2273 case XY_ERR_DSEQ: 2274 return("Disk sequencer error"); 2275 case XY_ERR_SEEK: 2276 return("Seek error"); 2277 default: 2278 return ("Unknown error"); 2279 } 2280 } 2281 2282 int 2283 xyc_entoact(int errnum) 2284 { 2285 switch (errnum) { 2286 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2287 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2288 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2289 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2290 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2291 2292 return(XY_ERA_PROG); /* program error ! */ 2293 2294 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2295 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2296 case XY_ERR_SOFT: 2297 2298 return(XY_ERA_HARD); /* hard error, retry */ 2299 2300 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2301 2302 return(XY_ERA_RSET); /* hard error reset */ 2303 2304 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2305 2306 return(XY_ERA_SOFT); /* an FYI error */ 2307 2308 case XY_ERR_WPRO: 2309 2310 return(XY_ERA_WPRO); /* write protect */ 2311 } 2312 2313 return(XY_ERA_PROG); /* ??? */ 2314 } 2315
Indexes created Tue Sep 30 20:09:53 GMT 2025