xy.c revision 1.99
1 /* $NetBSD: xy.c,v 1.99 2015/04/26 15:15:20 mlelstv 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 1.99 2015/04/26 15:15:20 mlelstv 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 = (struct xy_iorq *) 494 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 495 M_DEVBUF, M_NOWAIT|M_ZERO); 496 if (xyc->reqs == NULL) 497 panic("xyc malloc"); 498 499 /* 500 * init iorq to iopb pointers, and non-zero fields in the 501 * iopb which never change. 502 */ 503 504 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 505 xyc->xy_chain[lcv] = NULL; 506 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 507 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 508 xyc->iopbase[lcv].asr = 1; /* always the same */ 509 xyc->iopbase[lcv].eef = 1; /* always the same */ 510 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 511 xyc->iopbase[lcv].aud = 1; /* always the same */ 512 xyc->iopbase[lcv].relo = 1; /* always the same */ 513 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 514 515 if ((error = vme_dmamap_create( 516 ct, /* VME chip tag */ 517 MAXPHYS, /* size */ 518 VME_AM_A24, /* address modifier */ 519 VME_D16, /* data size */ 520 0, /* swap */ 521 1, /* nsegments */ 522 MAXPHYS, /* maxsegsz */ 523 0, /* boundary */ 524 BUS_DMA_NOWAIT, 525 &xyc->reqs[lcv].dmamap)) != 0) { 526 527 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 528 error); 529 return; 530 } 531 } 532 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 533 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 534 xyc->xy_hand = 0; 535 536 /* read controller parameters and insure we have a 450/451 */ 537 538 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 539 res = xyc->ciopb->ctyp; 540 XYC_DONE(xyc, error); 541 if (res != XYCT_450) { 542 if (error) 543 printf(": %s: ", xyc_e2str(error)); 544 printf(": doesn't identify as a 450/451\n"); 545 return; 546 } 547 printf(": Xylogics 450/451"); 548 if (xyc->no_ols) 549 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 550 printf("\n"); 551 if (error) { 552 aprint_error_dev(xyc->sc_dev, "error: %s\n", 553 xyc_e2str(error)); 554 return; 555 } 556 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 557 printf("%s: 24 bit addressing turned off\n", 558 device_xname(xyc->sc_dev)); 559 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 560 printf("to enable 24 bit mode and this driver\n"); 561 return; 562 } 563 564 /* link in interrupt with higher level software */ 565 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 566 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 567 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 568 device_xname(xyc->sc_dev), "intr"); 569 570 callout_init(&xyc->sc_tick_ch, 0); 571 572 /* now we must look for disks using autoconfig */ 573 xa.fullmode = XY_SUB_POLL; 574 xa.booting = 1; 575 576 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 577 (void) config_found(self, (void *) &xa, NULL); 578 579 /* start the watchdog clock */ 580 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 581 582 } 583 584 /* 585 * xymatch: probe for disk. 586 * 587 * note: we almost always say disk is present. this allows us to 588 * spin up and configure a disk after the system is booted (we can 589 * call xyattach!). 590 */ 591 int 592 xymatch(device_t parent, cfdata_t cf, void *aux) 593 { 594 struct xyc_attach_args *xa = aux; 595 596 /* looking for autoconf wildcard or exact match */ 597 598 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 599 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 600 return 0; 601 602 return 1; 603 604 } 605 606 /* 607 * xyattach: attach a disk. this can be called from autoconf and also 608 * from xyopen/xystrategy. 609 */ 610 void 611 xyattach(device_t parent, device_t self, void *aux) 612 { 613 struct xy_softc *xy = device_private(self), *oxy; 614 struct xyc_softc *xyc = device_private(parent); 615 struct xyc_attach_args *xa = aux; 616 int spt, mb, blk, lcv, fmode, s = 0, newstate; 617 struct dkbad *dkb; 618 int rseg, error; 619 bus_dma_segment_t seg; 620 bus_addr_t busaddr; 621 void * dmaddr; 622 char * buf; 623 624 xy->sc_dev = self; 625 626 /* 627 * Always re-initialize the disk structure. We want statistics 628 * to start with a clean slate. 629 */ 630 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 631 632 /* if booting, init the xy_softc */ 633 634 if (xa->booting) { 635 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 636 xy->flags = 0; 637 xy->parent = xyc; 638 639 /* init queue of waiting bufs */ 640 641 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 642 643 xy->xyrq = &xyc->reqs[xa->driveno]; 644 645 } 646 xy->xy_drive = xa->driveno; 647 fmode = xa->fullmode; 648 xyc->sc_drives[xa->driveno] = xy; 649 650 /* if not booting, make sure we are the only process in the attach for 651 * this drive. if locked out, sleep on it. */ 652 653 if (!xa->booting) { 654 s = splbio(); 655 while (xy->state == XY_DRIVE_ATTACHING) { 656 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 657 splx(s); 658 return; 659 } 660 } 661 printf("%s at %s", 662 device_xname(xy->sc_dev), device_xname(xy->parent->sc_dev)); 663 } 664 665 /* we now have control */ 666 xy->state = XY_DRIVE_ATTACHING; 667 newstate = XY_DRIVE_UNKNOWN; 668 669 buf = NULL; 670 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 671 XYFM_BPS, 672 (void **)&buf, 673 &busaddr)) != 0) { 674 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 675 error); 676 return; 677 } 678 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 679 680 /* first try and reset the drive */ 681 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 682 XYC_DONE(xyc, error); 683 if (error == XY_ERR_DNRY) { 684 printf(" drive %d: off-line\n", xa->driveno); 685 goto done; 686 } 687 if (error) { 688 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 689 goto done; 690 } 691 printf(" drive %d: ready", xa->driveno); 692 693 /* 694 * now set drive parameters (to semi-bogus values) so we can read the 695 * disk label. 696 */ 697 xy->pcyl = xy->ncyl = 1; 698 xy->acyl = 0; 699 xy->nhead = 1; 700 xy->nsect = 1; 701 xy->sectpercyl = 1; 702 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 703 xy->dkb.bt_bad[lcv].bt_cyl = 704 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 705 706 /* read disk label */ 707 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 708 xy->drive_type++) { 709 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 710 dmaddr, fmode); 711 XYC_DONE(xyc, error); 712 if (error == XY_ERR_AOK) break; 713 } 714 715 if (error != XY_ERR_AOK) { 716 aprint_normal("\n"); 717 aprint_error_dev(xy->sc_dev, "reading disk label failed: %s\n", 718 xyc_e2str(error)); 719 goto done; 720 } 721 printf(" (drive type %d)\n", xy->drive_type); 722 723 newstate = XY_DRIVE_NOLABEL; 724 725 xy->hw_spt = spt = 0; /* XXX needed ? */ 726 /* Attach the disk: must be before getdisklabel to malloc label */ 727 disk_init(&xy->sc_dk, device_xname(xy->sc_dev), &xydkdriver); 728 disk_attach(&xy->sc_dk); 729 730 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 731 goto done; 732 733 /* inform the user of what is up */ 734 printf("%s: <%s>, pcyl %d\n", device_xname(xy->sc_dev), 735 buf, xy->pcyl); 736 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 737 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 738 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 739 XYFM_BPS); 740 741 /* 742 * 450/451 stupidity: the drive type is encoded into the format 743 * of the disk. the drive type in the IOPB must match the drive 744 * type in the format, or you will not be able to do I/O to the 745 * disk (you get header not found errors). if you have two drives 746 * of different sizes that have the same drive type in their 747 * formatting then you are out of luck. 748 * 749 * this problem was corrected in the 753/7053. 750 */ 751 752 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 753 oxy = xyc->sc_drives[lcv]; 754 if (oxy == NULL || oxy == xy) continue; 755 if (oxy->drive_type != xy->drive_type) continue; 756 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 757 xy->nhead != oxy->nhead) { 758 printf("%s: %s and %s must be the same size!\n", 759 device_xname(xyc->sc_dev), device_xname(xy->sc_dev), 760 device_xname(oxy->sc_dev)); 761 panic("xy drive size mismatch"); 762 } 763 } 764 765 766 /* now set the real drive parameters! */ 767 768 blk = (xy->nsect - 1) + 769 ((xy->nhead - 1) * xy->nsect) + 770 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 771 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 772 XYC_DONE(xyc, error); 773 if (error) { 774 aprint_error_dev(xy->sc_dev, "write drive size failed: %s\n", 775 xyc_e2str(error)); 776 goto done; 777 } 778 newstate = XY_DRIVE_ONLINE; 779 780 /* 781 * read bad144 table. this table resides on the first sector of the 782 * last track of the disk (i.e. second cyl of "acyl" area). 783 */ 784 785 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 786 /* last cyl */ 787 (xy->nhead - 1) * xy->nsect; /* last head */ 788 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 789 dmaddr, fmode); 790 XYC_DONE(xyc, error); 791 if (error) { 792 aprint_error_dev(xy->sc_dev, "reading bad144 failed: %s\n", 793 xyc_e2str(error)); 794 goto done; 795 } 796 797 /* check dkbad for sanity */ 798 dkb = (struct dkbad *) buf; 799 for (lcv = 0; lcv < 126; lcv++) { 800 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 801 dkb->bt_bad[lcv].bt_cyl == 0) && 802 dkb->bt_bad[lcv].bt_trksec == 0xffff) 803 continue; /* blank */ 804 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 805 break; 806 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 807 break; 808 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 809 break; 810 } 811 if (lcv != 126) { 812 aprint_error_dev(xy->sc_dev, "warning: invalid bad144 sector!\n"); 813 } else { 814 memcpy(&xy->dkb, buf, XYFM_BPS); 815 } 816 817 done: 818 if (buf != NULL) { 819 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 820 &seg, rseg, XYFM_BPS, buf); 821 } 822 823 xy->state = newstate; 824 if (!xa->booting) { 825 wakeup(&xy->state); 826 splx(s); 827 } 828 } 829 830 /* 831 * end of autoconfig functions 832 */ 833 834 /* 835 * { b , c } d e v s w f u n c t i o n s 836 */ 837 838 /* 839 * xyclose: close device 840 */ 841 int 842 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 843 { 844 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 845 int part = DISKPART(dev); 846 847 /* clear mask bits */ 848 849 switch (fmt) { 850 case S_IFCHR: 851 xy->sc_dk.dk_copenmask &= ~(1 << part); 852 break; 853 case S_IFBLK: 854 xy->sc_dk.dk_bopenmask &= ~(1 << part); 855 break; 856 } 857 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 858 859 return 0; 860 } 861 862 /* 863 * xydump: crash dump system 864 */ 865 int 866 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 867 { 868 int unit, part; 869 struct xy_softc *xy; 870 871 unit = DISKUNIT(dev); 872 part = DISKPART(dev); 873 874 xy = device_lookup_private(&xy_cd, unit); 875 if (!xy) 876 return ENXIO; 877 878 printf("%s%c: crash dump not supported (yet)\n", device_xname(xy->sc_dev), 879 'a' + part); 880 881 return ENXIO; 882 883 /* outline: globals: "dumplo" == sector number of partition to start 884 * dump at (convert to physical sector with partition table) 885 * "dumpsize" == size of dump in clicks "physmem" == size of physical 886 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 887 * physmem) 888 * 889 * dump a copy of physical memory to the dump device starting at sector 890 * "dumplo" in the swap partition (make sure > 0). map in pages as 891 * we go. use polled I/O. 892 * 893 * XXX how to handle NON_CONTIG? */ 894 895 } 896 897 static enum kauth_device_req 898 xy_getkauthreq(u_char cmd) 899 { 900 enum kauth_device_req req; 901 902 switch (cmd) { 903 case XYCMD_WR: 904 case XYCMD_WTH: 905 case XYCMD_WFM: 906 case XYCMD_WRH: 907 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 908 break; 909 910 case XYCMD_RD: 911 case XYCMD_RTH: 912 case XYCMD_RDH: 913 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 914 break; 915 916 case XYCMD_RDS: 917 case XYCMD_MBD: 918 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 919 break; 920 921 case XYCMD_RST: 922 case XYCMD_SDS: 923 case XYCMD_MBL: 924 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 925 break; 926 927 case XYCMD_NOP: 928 case XYCMD_SK: 929 case XYCMD_ST: 930 case XYCMD_R: 931 default: 932 req = 0; 933 break; 934 } 935 936 return (req); 937 } 938 939 /* 940 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 941 */ 942 int 943 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 944 { 945 struct xy_softc *xy; 946 struct xd_iocmd *xio; 947 int error, s, unit; 948 #ifdef __HAVE_OLD_DISKLABEL 949 struct disklabel newlabel; 950 #endif 951 struct disklabel *lp; 952 953 unit = DISKUNIT(dev); 954 955 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 956 return (ENXIO); 957 958 error = disk_ioctl(&xy->sc_dk, dev, command, addr, flag, l); 959 if (error != EPASSTHROUGH) 960 return error; 961 962 /* switch on ioctl type */ 963 964 switch (command) { 965 case DIOCSBAD: /* set bad144 info */ 966 if ((flag & FWRITE) == 0) 967 return EBADF; 968 s = splbio(); 969 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 970 splx(s); 971 return 0; 972 973 case DIOCSDINFO: /* set disk label */ 974 #ifdef __HAVE_OLD_DISKLABEL 975 case ODIOCSDINFO: 976 if (command == ODIOCSDINFO) { 977 memset(&newlabel, 0, sizeof newlabel); 978 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 979 lp = &newlabel; 980 } else 981 #endif 982 lp = (struct disklabel *)addr; 983 984 if ((flag & FWRITE) == 0) 985 return EBADF; 986 error = setdisklabel(xy->sc_dk.dk_label, 987 lp, /* xy->sc_dk.dk_openmask : */ 0, 988 xy->sc_dk.dk_cpulabel); 989 if (error == 0) { 990 if (xy->state == XY_DRIVE_NOLABEL) 991 xy->state = XY_DRIVE_ONLINE; 992 } 993 return error; 994 995 case DIOCWLABEL: /* change write status of disk label */ 996 if ((flag & FWRITE) == 0) 997 return EBADF; 998 if (*(int *) addr) 999 xy->flags |= XY_WLABEL; 1000 else 1001 xy->flags &= ~XY_WLABEL; 1002 return 0; 1003 1004 case DIOCWDINFO: /* write disk label */ 1005 #ifdef __HAVE_OLD_DISKLABEL 1006 case ODIOCWDINFO: 1007 if (command == ODIOCWDINFO) { 1008 memset(&newlabel, 0, sizeof newlabel); 1009 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1010 lp = &newlabel; 1011 } else 1012 #endif 1013 lp = (struct disklabel *)addr; 1014 1015 if ((flag & FWRITE) == 0) 1016 return EBADF; 1017 error = setdisklabel(xy->sc_dk.dk_label, 1018 lp, /* xy->sc_dk.dk_openmask : */ 0, 1019 xy->sc_dk.dk_cpulabel); 1020 if (error == 0) { 1021 if (xy->state == XY_DRIVE_NOLABEL) 1022 xy->state = XY_DRIVE_ONLINE; 1023 1024 /* Simulate opening partition 0 so write succeeds. */ 1025 xy->sc_dk.dk_openmask |= (1 << 0); 1026 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1027 xystrategy, xy->sc_dk.dk_label, 1028 xy->sc_dk.dk_cpulabel); 1029 xy->sc_dk.dk_openmask = 1030 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1031 } 1032 return error; 1033 1034 case DIOSXDCMD: { 1035 enum kauth_device_req req; 1036 1037 xio = (struct xd_iocmd *) addr; 1038 req = xy_getkauthreq(xio->cmd); 1039 if ((error = kauth_authorize_device_passthru(l->l_cred, 1040 dev, req, xio)) != 0) 1041 return (error); 1042 return (xyc_ioctlcmd(xy, dev, xio)); 1043 } 1044 1045 default: 1046 return ENOTTY; 1047 } 1048 } 1049 1050 /* 1051 * xyopen: open drive 1052 */ 1053 1054 int 1055 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1056 { 1057 int unit, part; 1058 struct xy_softc *xy; 1059 struct xyc_attach_args xa; 1060 1061 /* first, could it be a valid target? */ 1062 1063 unit = DISKUNIT(dev); 1064 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1065 return (ENXIO); 1066 part = DISKPART(dev); 1067 1068 /* do we need to attach the drive? */ 1069 1070 if (xy->state == XY_DRIVE_UNKNOWN) { 1071 xa.driveno = xy->xy_drive; 1072 xa.fullmode = XY_SUB_WAIT; 1073 xa.booting = 0; 1074 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1075 if (xy->state == XY_DRIVE_UNKNOWN) { 1076 return (EIO); 1077 } 1078 } 1079 /* check for partition */ 1080 1081 if (part != RAW_PART && 1082 (part >= xy->sc_dk.dk_label->d_npartitions || 1083 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1084 return (ENXIO); 1085 } 1086 /* set open masks */ 1087 1088 switch (fmt) { 1089 case S_IFCHR: 1090 xy->sc_dk.dk_copenmask |= (1 << part); 1091 break; 1092 case S_IFBLK: 1093 xy->sc_dk.dk_bopenmask |= (1 << part); 1094 break; 1095 } 1096 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1097 1098 return 0; 1099 } 1100 1101 int 1102 xyread(dev_t dev, struct uio *uio, int flags) 1103 { 1104 1105 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1106 } 1107 1108 int 1109 xywrite(dev_t dev, struct uio *uio, int flags) 1110 { 1111 1112 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1113 } 1114 1115 1116 /* 1117 * xysize: return size of a partition for a dump 1118 */ 1119 1120 int 1121 xysize(dev_t dev) 1122 { 1123 struct xy_softc *xysc; 1124 int unit, part, size, omask; 1125 1126 /* valid unit? */ 1127 unit = DISKUNIT(dev); 1128 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1129 return (-1); 1130 1131 part = DISKPART(dev); 1132 omask = xysc->sc_dk.dk_openmask & (1 << part); 1133 1134 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1135 return (-1); 1136 1137 /* do it */ 1138 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1139 size = -1; /* only give valid size for swap partitions */ 1140 else 1141 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1142 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1143 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1144 return (-1); 1145 return (size); 1146 } 1147 1148 /* 1149 * xystrategy: buffering system interface to xy. 1150 */ 1151 1152 void 1153 xystrategy(struct buf *bp) 1154 { 1155 struct xy_softc *xy; 1156 int s, unit; 1157 struct xyc_attach_args xa; 1158 struct disklabel *lp; 1159 daddr_t blkno; 1160 1161 unit = DISKUNIT(bp->b_dev); 1162 1163 /* check for live device */ 1164 1165 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1166 bp->b_blkno < 0 || 1167 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1168 bp->b_error = EINVAL; 1169 goto done; 1170 } 1171 /* do we need to attach the drive? */ 1172 1173 if (xy->state == XY_DRIVE_UNKNOWN) { 1174 xa.driveno = xy->xy_drive; 1175 xa.fullmode = XY_SUB_WAIT; 1176 xa.booting = 0; 1177 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1178 if (xy->state == XY_DRIVE_UNKNOWN) { 1179 bp->b_error = EIO; 1180 goto done; 1181 } 1182 } 1183 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1184 /* no I/O to unlabeled disks, unless raw partition */ 1185 bp->b_error = EIO; 1186 goto done; 1187 } 1188 /* short circuit zero length request */ 1189 1190 if (bp->b_bcount == 0) 1191 goto done; 1192 1193 /* check bounds with label (disksubr.c). Determine the size of the 1194 * transfer, and make sure it is within the boundaries of the 1195 * partition. Adjust transfer if needed, and signal errors or early 1196 * completion. */ 1197 1198 lp = xy->sc_dk.dk_label; 1199 1200 if (bounds_check_with_label(&xy->sc_dk, bp, 1201 (xy->flags & XY_WLABEL) != 0) <= 0) 1202 goto done; 1203 1204 /* 1205 * Now convert the block number to absolute and put it in 1206 * terms of the device's logical block size. 1207 */ 1208 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1209 if (DISKPART(bp->b_dev) != RAW_PART) 1210 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1211 1212 bp->b_rawblkno = blkno; 1213 1214 /* 1215 * now we know we have a valid buf structure that we need to do I/O 1216 * on. 1217 */ 1218 s = splbio(); /* protect the queues */ 1219 1220 bufq_put(xy->xyq, bp); 1221 1222 /* start 'em up */ 1223 1224 xyc_start(xy->parent, NULL); 1225 1226 /* done! */ 1227 1228 splx(s); 1229 return; 1230 1231 done: /* tells upper layers we are done with this 1232 * buf */ 1233 bp->b_resid = bp->b_bcount; 1234 biodone(bp); 1235 } 1236 /* 1237 * end of {b,c}devsw functions 1238 */ 1239 1240 /* 1241 * i n t e r r u p t f u n c t i o n 1242 * 1243 * xycintr: hardware interrupt. 1244 */ 1245 int 1246 xycintr(void *v) 1247 { 1248 struct xyc_softc *xycsc = v; 1249 1250 /* kick the event counter */ 1251 1252 xycsc->sc_intrcnt.ev_count++; 1253 1254 /* remove as many done IOPBs as possible */ 1255 1256 xyc_remove_iorq(xycsc); 1257 1258 /* start any iorq's already waiting */ 1259 1260 xyc_start(xycsc, NULL); 1261 1262 return (1); 1263 } 1264 /* 1265 * end of interrupt function 1266 */ 1267 1268 /* 1269 * i n t e r n a l f u n c t i o n s 1270 */ 1271 1272 /* 1273 * xyc_rqinit: fill out the fields of an I/O request 1274 */ 1275 1276 inline void 1277 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) 1278 { 1279 rq->xyc = xyc; 1280 rq->xy = xy; 1281 rq->ttl = XYC_MAXTTL + 10; 1282 rq->mode = md; 1283 rq->tries = rq->errnum = rq->lasterror = 0; 1284 rq->blockno = blk; 1285 rq->sectcnt = cnt; 1286 rq->dbuf = db; 1287 rq->buf = bp; 1288 } 1289 1290 /* 1291 * xyc_rqtopb: load up an IOPB based on an iorq 1292 */ 1293 1294 void 1295 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1296 { 1297 u_long block, dp; 1298 1299 /* normal IOPB case, standard stuff */ 1300 1301 /* chain bit handled later */ 1302 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1303 iopb->com = cmd; 1304 iopb->errnum = 0; 1305 iopb->errs = 0; 1306 iopb->done = 0; 1307 if (iorq->xy) { 1308 iopb->unit = iorq->xy->xy_drive; 1309 iopb->dt = iorq->xy->drive_type; 1310 } else { 1311 iopb->unit = 0; 1312 iopb->dt = 0; 1313 } 1314 block = iorq->blockno; 1315 if (iorq->xy == NULL || block == 0) { 1316 iopb->sect = iopb->head = iopb->cyl = 0; 1317 } else { 1318 iopb->sect = block % iorq->xy->nsect; 1319 block = block / iorq->xy->nsect; 1320 iopb->head = block % iorq->xy->nhead; 1321 block = block / iorq->xy->nhead; 1322 iopb->cyl = block; 1323 } 1324 iopb->scnt = iorq->sectcnt; 1325 dp = (u_long) iorq->dbuf; 1326 if (iorq->dbuf == NULL) { 1327 iopb->dataa = 0; 1328 iopb->datar = 0; 1329 } else { 1330 iopb->dataa = (dp & 0xffff); 1331 iopb->datar = ((dp & 0xff0000) >> 16); 1332 } 1333 iopb->subfn = subfun; 1334 } 1335 1336 1337 /* 1338 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1339 */ 1340 1341 int 1342 xyc_unbusy(struct xyc *xyc, int del) 1343 { 1344 while (del-- > 0) { 1345 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1346 break; 1347 DELAY(1); 1348 } 1349 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1350 } 1351 1352 /* 1353 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1354 * note that NORM requests are handled separately. 1355 */ 1356 int 1357 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1358 int scnt, char *dptr, int fullmode) 1359 { 1360 int submode = XY_STATE(fullmode); 1361 struct xy_iorq *iorq = xycsc->ciorq; 1362 struct xy_iopb *iopb = xycsc->ciopb; 1363 1364 /* 1365 * is someone else using the control iopq wait for it if we can 1366 */ 1367 start: 1368 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1369 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1370 return(XY_ERR_FAIL); 1371 goto start; 1372 } 1373 1374 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1375 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1376 iorq->mode = XY_SUB_FREE; 1377 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1378 } 1379 1380 /* init iorq/iopb */ 1381 1382 xyc_rqinit(iorq, xycsc, 1383 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1384 fullmode, block, scnt, dptr, NULL); 1385 1386 /* load IOPB from iorq */ 1387 1388 xyc_rqtopb(iorq, iopb, cmd, subfn); 1389 1390 /* submit it for processing */ 1391 1392 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1393 1394 return(XY_ERR_AOK); 1395 } 1396 1397 /* 1398 * xyc_startbuf 1399 * start a buffer for running 1400 */ 1401 1402 int 1403 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1404 { 1405 #ifdef XYC_DEBUG 1406 int partno; 1407 #endif 1408 int error; 1409 struct xy_iorq *iorq; 1410 struct xy_iopb *iopb; 1411 u_long block; 1412 1413 iorq = xysc->xyrq; 1414 iopb = iorq->iopb; 1415 1416 /* get buf */ 1417 1418 if (bp == NULL) 1419 panic("xyc_startbuf null buf"); 1420 1421 #ifdef XYC_DEBUG 1422 partno = DISKPART(bp->b_dev); 1423 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1424 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1425 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1426 bp->b_bcount, bp->b_data); 1427 #endif 1428 1429 /* 1430 * load request. 1431 * 1432 * note that iorq points to the buffer as mapped into DVMA space, 1433 * where as the bp->b_data points to its non-DVMA mapping. 1434 */ 1435 1436 block = bp->b_rawblkno; 1437 1438 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1439 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1440 if (error != 0) { 1441 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1442 return (XY_ERR_FAIL); /* XXX: need some sort of 1443 * call-back scheme here? */ 1444 } 1445 1446 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1447 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1448 ? BUS_DMASYNC_PREREAD 1449 : BUS_DMASYNC_PREWRITE); 1450 1451 /* init iorq and load iopb from it */ 1452 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1453 bp->b_bcount / XYFM_BPS, 1454 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1455 bp); 1456 1457 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1458 1459 /* Instrumentation. */ 1460 disk_busy(&xysc->sc_dk); 1461 1462 return (XY_ERR_AOK); 1463 } 1464 1465 1466 /* 1467 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1468 * if ok. if it fail returns an error code. type is XY_SUB_*. 1469 * 1470 * note: caller frees iorq in all cases except NORM 1471 * 1472 * return value: 1473 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1474 * WAIT: XY_AOK (success), <error-code> (failed) 1475 * POLL: <same as WAIT> 1476 * NOQ : <same as NORM> 1477 * 1478 * there are three sources for i/o requests: 1479 * [1] xystrategy: normal block I/O, using "struct buf" system. 1480 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1481 * [3] open/ioctl: these are I/O requests done in the context of a process, 1482 * and the process should block until they are done. 1483 * 1484 * software state is stored in the iorq structure. each iorq has an 1485 * iopb structure. the hardware understands the iopb structure. 1486 * every command must go through an iopb. a 450 handles one iopb at a 1487 * time, where as a 451 can take them in chains. [the 450 claims it 1488 * can handle chains, but is appears to be buggy...] iopb are allocated 1489 * in DVMA space at boot up time. each disk gets one iopb, and the 1490 * controller gets one (for POLL and WAIT commands). what happens if 1491 * the iopb is busy? for i/o type [1], the buffers are queued at the 1492 * "buff" layer and * picked up later by the interrupt routine. for case 1493 * [2] we can only be blocked if there is a WAIT type I/O request being 1494 * run. since this can only happen when we are crashing, we wait a sec 1495 * and then steal the IOPB. for case [3] the process can sleep 1496 * on the iorq free list until some iopbs are available. 1497 */ 1498 1499 1500 int 1501 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1502 { 1503 struct xy_iopb *dmaiopb; 1504 1505 #ifdef XYC_DEBUG 1506 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1507 device_xname(xycsc->sc_dev), iorq, type); 1508 #endif 1509 1510 /* first check and see if controller is busy */ 1511 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1512 #ifdef XYC_DEBUG 1513 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1514 #endif 1515 if (type == XY_SUB_NOQ) 1516 return (XY_ERR_FAIL); /* failed */ 1517 switch (type) { 1518 case XY_SUB_NORM: 1519 return XY_ERR_AOK; /* success */ 1520 case XY_SUB_WAIT: 1521 while (iorq->iopb->done == 0) { 1522 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1523 } 1524 return (iorq->errnum); 1525 case XY_SUB_POLL: /* steal controller */ 1526 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1527 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1528 panic("xyc_submit_iorq: stuck xyc"); 1529 printf("%s: stole controller\n", 1530 device_xname(xycsc->sc_dev)); 1531 break; 1532 default: 1533 panic("xyc_submit_iorq adding"); 1534 } 1535 } 1536 1537 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1538 if (dmaiopb == NULL) { /* nothing doing? */ 1539 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1540 return(XY_ERR_AOK); 1541 panic("xyc_submit_iorq: xyc_chain failed!"); 1542 } 1543 1544 XYC_GO(xycsc->xyc, dmaiopb); 1545 1546 /* command now running, wrap it up */ 1547 switch (type) { 1548 case XY_SUB_NORM: 1549 case XY_SUB_NOQ: 1550 return (XY_ERR_AOK); /* success */ 1551 case XY_SUB_WAIT: 1552 while (iorq->iopb->done == 0) { 1553 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1554 } 1555 return (iorq->errnum); 1556 case XY_SUB_POLL: 1557 return (xyc_piodriver(xycsc, iorq)); 1558 default: 1559 panic("xyc_submit_iorq wrap up"); 1560 } 1561 panic("xyc_submit_iorq"); 1562 return 0; /* not reached */ 1563 } 1564 1565 1566 /* 1567 * xyc_chain: build a chain. return dvma address of first element in 1568 * the chain. iorq != NULL: means we only want that item on the chain. 1569 */ 1570 1571 struct xy_iopb * 1572 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1573 { 1574 int togo, chain, hand; 1575 1576 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1577 1578 /* 1579 * promote control IOPB to the top 1580 */ 1581 if (iorq == NULL) { 1582 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1583 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1584 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1585 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1586 } 1587 1588 /* 1589 * special case: if iorq != NULL then we have a POLL or WAIT request. 1590 * we let these take priority and do them first. 1591 */ 1592 if (iorq) { 1593 xycsc->xy_chain[0] = iorq; 1594 iorq->iopb->chen = 0; 1595 return(iorq->dmaiopb); 1596 } 1597 1598 /* 1599 * NORM case: do round robin and maybe chain (if allowed and possible) 1600 */ 1601 chain = 0; 1602 hand = xycsc->xy_hand; 1603 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1604 1605 for (togo = XYC_MAXIOPB; togo > 0; 1606 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1607 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1608 1609 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1610 xycsc->iopbase[hand].done) 1611 continue; /* not ready-for-i/o */ 1612 1613 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1614 iopb = xycsc->xy_chain[chain]->iopb; 1615 iopb->chen = 0; 1616 if (chain != 0) { 1617 /* adding a link to a chain */ 1618 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1619 prev_iopb->chen = 1; 1620 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1621 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1622 } else { 1623 /* head of chain */ 1624 iorq = xycsc->xy_chain[chain]; 1625 } 1626 chain++; 1627 1628 /* quit if chaining dis-allowed */ 1629 if (xycsc->no_ols) 1630 break; 1631 } 1632 1633 return(iorq ? iorq->dmaiopb : NULL); 1634 } 1635 1636 /* 1637 * xyc_piodriver 1638 * 1639 * programmed i/o driver. this function takes over the computer 1640 * and drains off the polled i/o request. it returns the status of the iorq 1641 * the caller is interesting in. 1642 */ 1643 int 1644 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1645 { 1646 int nreset = 0; 1647 int retval = 0; 1648 u_long res; 1649 #ifdef XYC_DEBUG 1650 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1651 #endif 1652 1653 while (iorq->iopb->done == 0) { 1654 1655 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1656 1657 /* we expect some progress soon */ 1658 if (res == XY_ERR_FAIL && nreset >= 2) { 1659 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1660 #ifdef XYC_DEBUG 1661 printf("xyc_piodriver: timeout\n"); 1662 #endif 1663 return (XY_ERR_FAIL); 1664 } 1665 if (res == XY_ERR_FAIL) { 1666 if (xyc_reset(xycsc, 0, 1667 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1668 XY_ERR_FAIL, 1669 0) == XY_ERR_FAIL) 1670 return (XY_ERR_FAIL); /* flushes all but POLL 1671 * requests, resets */ 1672 continue; 1673 } 1674 1675 xyc_remove_iorq(xycsc); /* may resubmit request */ 1676 1677 if (iorq->iopb->done == 0) 1678 xyc_start(xycsc, iorq); 1679 } 1680 1681 /* get return value */ 1682 1683 retval = iorq->errnum; 1684 1685 #ifdef XYC_DEBUG 1686 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1687 iorq->errnum, xyc_e2str(iorq->errnum)); 1688 #endif 1689 1690 /* start up any bufs that have queued */ 1691 1692 xyc_start(xycsc, NULL); 1693 1694 return (retval); 1695 } 1696 1697 /* 1698 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1699 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1700 */ 1701 void 1702 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1703 { 1704 struct xy_iopb tmpiopb; 1705 struct xy_iopb *iopb; 1706 int del; 1707 1708 iopb = xycsc->ciopb; 1709 1710 /* Save contents */ 1711 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1712 1713 iopb->chen = iopb->done = iopb->errs = 0; 1714 iopb->ien = 0; 1715 iopb->com = XYCMD_RST; 1716 iopb->unit = xysc->xy_drive; 1717 1718 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1719 1720 del = XYC_RESETUSEC; 1721 while (del > 0) { 1722 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1723 break; 1724 DELAY(1); 1725 del--; 1726 } 1727 1728 if (del <= 0 || iopb->errs) { 1729 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1730 xyc_e2str(iopb->errnum)); 1731 del = xycsc->xyc->xyc_rsetup; 1732 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1733 panic("xyc_reset"); 1734 } else { 1735 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1736 } 1737 1738 /* Restore contents */ 1739 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1740 } 1741 1742 1743 /* 1744 * xyc_reset: reset everything: requests are marked as errors except 1745 * a polled request (which is resubmitted) 1746 */ 1747 int 1748 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1749 int error, struct xy_softc *xysc) 1750 { 1751 int del = 0, lcv, retval = XY_ERR_AOK; 1752 1753 /* soft reset hardware */ 1754 1755 if (!quiet) 1756 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1757 del = xycsc->xyc->xyc_rsetup; 1758 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1759 if (del == XY_ERR_FAIL) { 1760 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1761 retval = XY_ERR_FAIL; 1762 } 1763 if (xysc) 1764 xyc_xyreset(xycsc, xysc); 1765 1766 /* fix queues based on "blast-mode" */ 1767 1768 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1769 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1770 1771 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1772 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1773 XY_STATE(iorq->mode) != XY_SUB_NORM) 1774 /* is it active? */ 1775 continue; 1776 1777 if (blastmode == XY_RSET_ALL || 1778 blastmode != iorq) { 1779 /* failed */ 1780 iorq->errnum = error; 1781 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1782 switch (XY_STATE(iorq->mode)) { 1783 case XY_SUB_NORM: 1784 iorq->buf->b_error = EIO; 1785 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1786 1787 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1788 iorq->dmamap->dm_mapsize, 1789 (iorq->buf->b_flags & B_READ) 1790 ? BUS_DMASYNC_POSTREAD 1791 : BUS_DMASYNC_POSTWRITE); 1792 1793 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1794 1795 (void)bufq_get(iorq->xy->xyq); 1796 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1797 (xycsc->reqs[lcv].buf->b_bcount - 1798 xycsc->reqs[lcv].buf->b_resid), 1799 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1800 biodone(iorq->buf); 1801 iorq->mode = XY_SUB_FREE; 1802 break; 1803 case XY_SUB_WAIT: 1804 wakeup(iorq); 1805 case XY_SUB_POLL: 1806 iorq->mode = 1807 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1808 break; 1809 } 1810 1811 } else { 1812 1813 /* resubmit, no need to do anything here */ 1814 } 1815 } 1816 1817 /* 1818 * now, if stuff is waiting, start it. 1819 * since we just reset it should go 1820 */ 1821 xyc_start(xycsc, NULL); 1822 1823 return (retval); 1824 } 1825 1826 /* 1827 * xyc_start: start waiting buffers 1828 */ 1829 1830 void 1831 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1832 { 1833 int lcv; 1834 struct xy_softc *xy; 1835 1836 if (iorq == NULL) { 1837 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1838 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1839 if (bufq_peek(xy->xyq) == NULL) continue; 1840 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1841 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1842 } 1843 } 1844 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1845 } 1846 1847 /* 1848 * xyc_remove_iorq: remove "done" IOPB's. 1849 */ 1850 1851 int 1852 xyc_remove_iorq(struct xyc_softc *xycsc) 1853 { 1854 int errnum, rq, comm, errs; 1855 struct xyc *xyc = xycsc->xyc; 1856 u_long addr; 1857 struct xy_iopb *iopb; 1858 struct xy_iorq *iorq; 1859 struct buf *bp; 1860 1861 if (xyc->xyc_csr & XYC_DERR) { 1862 /* 1863 * DOUBLE ERROR: should never happen under normal use. This 1864 * error is so bad, you can't even tell which IOPB is bad, so 1865 * we dump them all. 1866 */ 1867 errnum = XY_ERR_DERR; 1868 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1869 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1870 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1871 panic("xyc_remove_iorq: controller DEAD"); 1872 } 1873 return (XY_ERR_AOK); 1874 } 1875 1876 /* 1877 * get iopb that is done, loop down the chain 1878 */ 1879 1880 if (xyc->xyc_csr & XYC_ERR) { 1881 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1882 } 1883 if (xyc->xyc_csr & XYC_IPND) { 1884 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1885 } 1886 1887 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1888 iorq = xycsc->xy_chain[rq]; 1889 if (iorq == NULL) break; /* done ! */ 1890 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1891 continue; /* free, or done */ 1892 iopb = iorq->iopb; 1893 if (iopb->done == 0) 1894 continue; /* not done yet */ 1895 1896 comm = iopb->com; 1897 errs = iopb->errs; 1898 1899 if (errs) 1900 iorq->errnum = iopb->errnum; 1901 else 1902 iorq->errnum = 0; 1903 1904 /* handle non-fatal errors */ 1905 1906 if (errs && 1907 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1908 continue; /* AOK: we resubmitted it */ 1909 1910 1911 /* this iorq is now done (hasn't been restarted or anything) */ 1912 1913 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1914 xyc_perror(iorq, iopb, 0); 1915 1916 /* now, if read/write check to make sure we got all the data 1917 * we needed. (this may not be the case if we got an error in 1918 * the middle of a multisector request). */ 1919 1920 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1921 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1922 /* we just successfully processed a bad144 sector 1923 * note: if we are in bad 144 mode, the pointers have 1924 * been advanced already (see above) and are pointing 1925 * at the bad144 sector. to exit bad144 mode, we 1926 * must advance the pointers 1 sector and issue a new 1927 * request if there are still sectors left to process 1928 * 1929 */ 1930 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1931 1932 /* exit b144 mode */ 1933 iorq->mode = iorq->mode & (~XY_MODE_B144); 1934 1935 if (iorq->sectcnt) { /* more to go! */ 1936 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1937 iopb->errs = iopb->done = 0; 1938 iorq->tries = 0; 1939 iopb->scnt = iorq->sectcnt; 1940 iopb->cyl = iorq->blockno / 1941 iorq->xy->sectpercyl; 1942 iopb->head = 1943 (iorq->blockno / iorq->xy->nhead) % 1944 iorq->xy->nhead; 1945 iopb->sect = iorq->blockno % XYFM_BPS; 1946 addr = (u_long) iorq->dbuf; 1947 iopb->dataa = (addr & 0xffff); 1948 iopb->datar = ((addr & 0xff0000) >> 16); 1949 /* will resubit at end */ 1950 continue; 1951 } 1952 } 1953 /* final cleanup, totally done with this request */ 1954 1955 switch (XY_STATE(iorq->mode)) { 1956 case XY_SUB_NORM: 1957 bp = iorq->buf; 1958 if (errs) { 1959 bp->b_error = EIO; 1960 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1961 } else { 1962 bp->b_resid = 0; /* done */ 1963 } 1964 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1965 iorq->dmamap->dm_mapsize, 1966 (iorq->buf->b_flags & B_READ) 1967 ? BUS_DMASYNC_POSTREAD 1968 : BUS_DMASYNC_POSTWRITE); 1969 1970 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1971 1972 (void)bufq_get(iorq->xy->xyq); 1973 disk_unbusy(&iorq->xy->sc_dk, 1974 (bp->b_bcount - bp->b_resid), 1975 (bp->b_flags & B_READ)); 1976 iorq->mode = XY_SUB_FREE; 1977 biodone(bp); 1978 break; 1979 case XY_SUB_WAIT: 1980 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1981 wakeup(iorq); 1982 break; 1983 case XY_SUB_POLL: 1984 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1985 break; 1986 } 1987 } 1988 1989 return (XY_ERR_AOK); 1990 } 1991 1992 /* 1993 * xyc_perror: print error. 1994 * - if still_trying is true: we got an error, retried and got a 1995 * different error. in that case lasterror is the old error, 1996 * and errnum is the new one. 1997 * - if still_trying is not true, then if we ever had an error it 1998 * is in lasterror. also, if iorq->errnum == 0, then we recovered 1999 * from that error (otherwise iorq->errnum == iorq->lasterror). 2000 */ 2001 void 2002 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 2003 { 2004 2005 int error = iorq->lasterror; 2006 2007 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2008 : device_xname(iorq->xyc->sc_dev)); 2009 if (iorq->buf) 2010 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2011 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2012 printf("%s %d/%d/%d: ", 2013 (iopb->com == XYCMD_RD) ? "read" : "write", 2014 iopb->cyl, iopb->head, iopb->sect); 2015 printf("%s", xyc_e2str(error)); 2016 2017 if (still_trying) 2018 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2019 else 2020 if (iorq->errnum == 0) 2021 printf(" [recovered in %d tries]", iorq->tries); 2022 2023 printf("\n"); 2024 } 2025 2026 /* 2027 * xyc_error: non-fatal error encountered... recover. 2028 * return AOK if resubmitted, return FAIL if this iopb is done 2029 */ 2030 int 2031 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2032 int comm) 2033 { 2034 int errnum = iorq->errnum; 2035 int erract = xyc_entoact(errnum); 2036 int oldmode, advance; 2037 #ifdef __sparc__ 2038 int i; 2039 #endif 2040 2041 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2042 oldmode = iorq->mode; 2043 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2044 /* make xyc_start ignore us */ 2045 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2046 iorq->mode = oldmode; 2047 } 2048 /* check for read/write to a sector in bad144 table if bad: redirect 2049 * request to bad144 area */ 2050 2051 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2052 (iorq->mode & XY_MODE_B144) == 0) { 2053 advance = iorq->sectcnt - iopb->scnt; 2054 XYC_ADVANCE(iorq, advance); 2055 #ifdef __sparc__ 2056 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2057 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2058 iorq->blockno % iorq->xy->nsect)) != -1) { 2059 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2060 * redirect */ 2061 iopb->errnum = iopb->done = iopb->errs = 0; 2062 iopb->scnt = 1; 2063 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2064 /* second to last acyl */ 2065 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2066 * standard */ 2067 iopb->head = i / iorq->xy->nhead; 2068 iopb->sect = i % iorq->xy->nhead; 2069 /* will resubmit when we come out of remove_iorq */ 2070 return (XY_ERR_AOK); /* recovered! */ 2071 } 2072 #endif 2073 } 2074 2075 /* 2076 * it isn't a bad144 sector, must be real error! see if we can retry 2077 * it? 2078 */ 2079 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2080 xyc_perror(iorq, iopb, 1); /* inform of error state 2081 * change */ 2082 iorq->lasterror = errnum; 2083 2084 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2085 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2086 iorq->tries++; 2087 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2088 /* will resubmit at end of remove_iorq */ 2089 return (XY_ERR_AOK); /* recovered! */ 2090 } 2091 2092 /* failed to recover from this error */ 2093 return (XY_ERR_FAIL); 2094 } 2095 2096 /* 2097 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2098 */ 2099 void 2100 xyc_tick(void *arg) 2101 { 2102 struct xyc_softc *xycsc = arg; 2103 int lcv, s, reset = 0; 2104 2105 /* reduce ttl for each request if one goes to zero, reset xyc */ 2106 s = splbio(); 2107 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2108 if (xycsc->reqs[lcv].mode == 0 || 2109 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2110 continue; 2111 xycsc->reqs[lcv].ttl--; 2112 if (xycsc->reqs[lcv].ttl == 0) 2113 reset = 1; 2114 } 2115 if (reset) { 2116 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2117 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2118 } 2119 splx(s); 2120 2121 /* until next time */ 2122 2123 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2124 } 2125 2126 /* 2127 * xyc_ioctlcmd: this function provides a user level interface to the 2128 * controller via ioctl. this allows "format" programs to be written 2129 * in user code, and is also useful for some debugging. we return 2130 * an error code. called at user priority. 2131 * 2132 * XXX missing a few commands (see the 7053 driver for ideas) 2133 */ 2134 int 2135 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2136 { 2137 int s, rqno, dummy = 0; 2138 char *dvmabuf = NULL, *buf = NULL; 2139 struct xyc_softc *xycsc; 2140 int rseg, error; 2141 bus_dma_segment_t seg; 2142 2143 /* check sanity of requested command */ 2144 2145 switch (xio->cmd) { 2146 2147 case XYCMD_NOP: /* no op: everything should be zero */ 2148 if (xio->subfn || xio->dptr || xio->dlen || 2149 xio->block || xio->sectcnt) 2150 return (EINVAL); 2151 break; 2152 2153 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2154 case XYCMD_WR: 2155 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2156 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2157 return (EINVAL); 2158 break; 2159 2160 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2161 return (EINVAL); 2162 2163 break; 2164 2165 default: 2166 return (EINVAL);/* ??? */ 2167 } 2168 2169 xycsc = xy->parent; 2170 2171 /* create DVMA buffer for request if needed */ 2172 if (xio->dlen) { 2173 bus_addr_t busbuf; 2174 2175 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2176 &seg, &rseg, 2177 xio->dlen, (void **)&buf, 2178 &busbuf)) != 0) { 2179 return (error); 2180 } 2181 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2182 2183 if (xio->cmd == XYCMD_WR) { 2184 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2185 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2186 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2187 return (error); 2188 } 2189 } 2190 } 2191 /* do it! */ 2192 2193 error = 0; 2194 s = splbio(); 2195 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2196 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2197 if (rqno == XY_ERR_FAIL) { 2198 error = EIO; 2199 goto done; 2200 } 2201 xio->errnum = xycsc->ciorq->errnum; 2202 xio->tries = xycsc->ciorq->tries; 2203 XYC_DONE(xycsc, dummy); 2204 2205 if (xio->cmd == XYCMD_RD) 2206 error = copyout(buf, xio->dptr, xio->dlen); 2207 2208 done: 2209 splx(s); 2210 if (dvmabuf) { 2211 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2212 xio->dlen, buf); 2213 } 2214 return (error); 2215 } 2216 2217 /* 2218 * xyc_e2str: convert error code number into an error string 2219 */ 2220 const char * 2221 xyc_e2str(int no) 2222 { 2223 switch (no) { 2224 case XY_ERR_FAIL: 2225 return ("Software fatal error"); 2226 case XY_ERR_DERR: 2227 return ("DOUBLE ERROR"); 2228 case XY_ERR_AOK: 2229 return ("Successful completion"); 2230 case XY_ERR_IPEN: 2231 return("Interrupt pending"); 2232 case XY_ERR_BCFL: 2233 return("Busy conflict"); 2234 case XY_ERR_TIMO: 2235 return("Operation timeout"); 2236 case XY_ERR_NHDR: 2237 return("Header not found"); 2238 case XY_ERR_HARD: 2239 return("Hard ECC error"); 2240 case XY_ERR_ICYL: 2241 return("Illegal cylinder address"); 2242 case XY_ERR_ISEC: 2243 return("Illegal sector address"); 2244 case XY_ERR_SMAL: 2245 return("Last sector too small"); 2246 case XY_ERR_SACK: 2247 return("Slave ACK error (non-existent memory)"); 2248 case XY_ERR_CHER: 2249 return("Cylinder and head/header error"); 2250 case XY_ERR_SRTR: 2251 return("Auto-seek retry successful"); 2252 case XY_ERR_WPRO: 2253 return("Write-protect error"); 2254 case XY_ERR_UIMP: 2255 return("Unimplemented command"); 2256 case XY_ERR_DNRY: 2257 return("Drive not ready"); 2258 case XY_ERR_SZER: 2259 return("Sector count zero"); 2260 case XY_ERR_DFLT: 2261 return("Drive faulted"); 2262 case XY_ERR_ISSZ: 2263 return("Illegal sector size"); 2264 case XY_ERR_SLTA: 2265 return("Self test A"); 2266 case XY_ERR_SLTB: 2267 return("Self test B"); 2268 case XY_ERR_SLTC: 2269 return("Self test C"); 2270 case XY_ERR_SOFT: 2271 return("Soft ECC error"); 2272 case XY_ERR_SFOK: 2273 return("Soft ECC error recovered"); 2274 case XY_ERR_IHED: 2275 return("Illegal head"); 2276 case XY_ERR_DSEQ: 2277 return("Disk sequencer error"); 2278 case XY_ERR_SEEK: 2279 return("Seek error"); 2280 default: 2281 return ("Unknown error"); 2282 } 2283 } 2284 2285 int 2286 xyc_entoact(int errnum) 2287 { 2288 switch (errnum) { 2289 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2290 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2291 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2292 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2293 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2294 2295 return(XY_ERA_PROG); /* program error ! */ 2296 2297 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2298 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2299 case XY_ERR_SOFT: 2300 2301 return(XY_ERA_HARD); /* hard error, retry */ 2302 2303 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2304 2305 return(XY_ERA_RSET); /* hard error reset */ 2306 2307 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2308 2309 return(XY_ERA_SOFT); /* an FYI error */ 2310 2311 case XY_ERR_WPRO: 2312 2313 return(XY_ERA_WPRO); /* write protect */ 2314 } 2315 2316 return(XY_ERA_PROG); /* ??? */ 2317 } 2318
Indexes created Tue Sep 30 11:09:46 GMT 2025