xy.c revision 1.98
1 /* $NetBSD: xy.c,v 1.98 2014/12/31 19:52:06 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Charles D. Cranor 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * 30 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 31 * 32 * author: Chuck Cranor <chuck@netbsd> 33 * 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 1.98 2014/12/31 19:52:06 christos 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 = { xystrategy }; 247 248 /* 249 * start: disk label fix code (XXX) 250 */ 251 252 static void *xy_labeldata; 253 254 static void 255 xydummystrat(struct buf *bp) 256 { 257 if (bp->b_bcount != XYFM_BPS) 258 panic("xydummystrat"); 259 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 260 bp->b_oflags |= BO_DONE; 261 bp->b_cflags &= ~BC_BUSY; 262 } 263 264 int 265 xygetdisklabel(struct xy_softc *xy, void *b) 266 { 267 const char *err; 268 #if defined(__sparc__) || defined(sun3) 269 struct sun_disklabel *sdl; 270 #endif 271 272 /* We already have the label data in `b'; setup for dummy strategy */ 273 xy_labeldata = b; 274 275 /* Required parameter for readdisklabel() */ 276 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 277 278 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 279 xydummystrat, 280 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 281 if (err) { 282 printf("%s: %s\n", device_xname(xy->sc_dev), err); 283 return(XY_ERR_FAIL); 284 } 285 286 #if defined(__sparc__) || defined(sun3) 287 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 288 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 289 if (sdl->sl_magic == SUN_DKMAGIC) { 290 xy->pcyl = sdl->sl_pcylinders; 291 } else 292 #endif 293 { 294 printf("%s: WARNING: no `pcyl' in disk label.\n", 295 device_xname(xy->sc_dev)); 296 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 297 xy->sc_dk.dk_label->d_acylinders; 298 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 299 device_xname(xy->sc_dev), xy->pcyl); 300 } 301 302 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 303 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 304 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 305 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 306 xy->sectpercyl = xy->nhead * xy->nsect; 307 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 308 * sun->bsd */ 309 return(XY_ERR_AOK); 310 } 311 312 /* 313 * end: disk label fix code (XXX) 314 */ 315 316 /* 317 * Shorthand for allocating, mapping and loading a DMA buffer 318 */ 319 int 320 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) 321 { 322 int nseg; 323 int error; 324 325 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 326 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 327 return (error); 328 } 329 330 if ((error = bus_dmamem_map(tag, seg, nseg, 331 len, kvap, 332 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 333 bus_dmamem_free(tag, seg, nseg); 334 return (error); 335 } 336 337 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 338 BUS_DMA_NOWAIT)) != 0) { 339 bus_dmamem_unmap(tag, *kvap, len); 340 bus_dmamem_free(tag, seg, nseg); 341 return (error); 342 } 343 344 *dmap = map->dm_segs[0].ds_addr; 345 *nsegp = nseg; 346 return (0); 347 } 348 349 void 350 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) 351 { 352 353 bus_dmamap_unload(tag, map); 354 bus_dmamem_unmap(tag, kva, len); 355 bus_dmamem_free(tag, seg, nseg); 356 } 357 358 359 /* 360 * a u t o c o n f i g f u n c t i o n s 361 */ 362 363 /* 364 * xycmatch: determine if xyc is present or not. we do a 365 * soft reset to detect the xyc. 366 */ 367 int 368 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 369 { 370 struct xyc *xyc = (void *)handle; /* XXX */ 371 372 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 373 } 374 375 int 376 xycmatch(device_t parent, cfdata_t cf, void *aux) 377 { 378 struct vme_attach_args *va = aux; 379 vme_chipset_tag_t ct = va->va_vct; 380 vme_am_t mod; 381 int error; 382 383 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 384 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 385 return (0); 386 387 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 388 mod, VME_D16, xyc_probe, 0); 389 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 390 391 return (error == 0); 392 } 393 394 /* 395 * xycattach: attach controller 396 */ 397 void 398 xycattach(device_t parent, device_t self, void *aux) 399 { 400 struct xyc_softc *xyc = device_private(self); 401 struct vme_attach_args *va = aux; 402 vme_chipset_tag_t ct = va->va_vct; 403 bus_space_tag_t bt; 404 bus_space_handle_t bh; 405 vme_intr_handle_t ih; 406 vme_am_t mod; 407 struct xyc_attach_args xa; 408 int lcv, res, error; 409 bus_dma_segment_t seg; 410 int rseg; 411 vme_mapresc_t resc; 412 bus_addr_t busaddr; 413 414 xyc->sc_dev = self; 415 416 /* get addressing and intr level stuff from autoconfig and load it 417 * into our xyc_softc. */ 418 419 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 420 421 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 422 panic("xyc: vme alloc"); 423 424 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 425 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 426 panic("xyc: vme_map"); 427 428 xyc->xyc = (struct xyc *) bh; /* XXX */ 429 xyc->ipl = va->ilevel; 430 xyc->vector = va->ivector; 431 xyc->no_ols = 0; /* XXX should be from config */ 432 433 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 434 xyc->sc_drives[lcv] = NULL; 435 436 /* 437 * allocate and zero buffers 438 * check boundaries of the KVA's ... all IOPBs must reside in 439 * the same 64K region. 440 */ 441 442 /* Get DMA handle for misc. transfers */ 443 if ((error = vme_dmamap_create( 444 ct, /* VME chip tag */ 445 MAXPHYS, /* size */ 446 VME_AM_A24, /* address modifier */ 447 VME_D16, /* data size */ 448 0, /* swap */ 449 1, /* nsegments */ 450 MAXPHYS, /* maxsegsz */ 451 0, /* boundary */ 452 BUS_DMA_NOWAIT, 453 &xyc->auxmap)) != 0) { 454 455 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 456 error); 457 return; 458 } 459 460 /* Get DMA handle for mapping iorq descriptors */ 461 if ((error = vme_dmamap_create( 462 ct, /* VME chip tag */ 463 XYC_MAXIOPB * sizeof(struct xy_iopb), 464 VME_AM_A24, /* address modifier */ 465 VME_D16, /* data size */ 466 0, /* swap */ 467 1, /* nsegments */ 468 XYC_MAXIOPB * sizeof(struct xy_iopb), 469 64*1024, /* boundary */ 470 BUS_DMA_NOWAIT, 471 &xyc->iopmap)) != 0) { 472 473 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 474 error); 475 return; 476 } 477 478 /* Get DMA buffer for iorq descriptors */ 479 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 480 XYC_MAXIOPB * sizeof(struct xy_iopb), 481 (void **)&xyc->iopbase, 482 &busaddr)) != 0) { 483 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 484 error); 485 return; 486 } 487 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 488 489 memset(xyc->iopbase, 0, XYC_MAXIOPB * sizeof(struct xy_iopb)); 490 491 xyc->reqs = (struct xy_iorq *) 492 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 493 M_DEVBUF, M_NOWAIT|M_ZERO); 494 if (xyc->reqs == NULL) 495 panic("xyc malloc"); 496 497 /* 498 * init iorq to iopb pointers, and non-zero fields in the 499 * iopb which never change. 500 */ 501 502 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 503 xyc->xy_chain[lcv] = NULL; 504 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 505 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 506 xyc->iopbase[lcv].asr = 1; /* always the same */ 507 xyc->iopbase[lcv].eef = 1; /* always the same */ 508 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 509 xyc->iopbase[lcv].aud = 1; /* always the same */ 510 xyc->iopbase[lcv].relo = 1; /* always the same */ 511 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 512 513 if ((error = vme_dmamap_create( 514 ct, /* VME chip tag */ 515 MAXPHYS, /* size */ 516 VME_AM_A24, /* address modifier */ 517 VME_D16, /* data size */ 518 0, /* swap */ 519 1, /* nsegments */ 520 MAXPHYS, /* maxsegsz */ 521 0, /* boundary */ 522 BUS_DMA_NOWAIT, 523 &xyc->reqs[lcv].dmamap)) != 0) { 524 525 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 526 error); 527 return; 528 } 529 } 530 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 531 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 532 xyc->xy_hand = 0; 533 534 /* read controller parameters and insure we have a 450/451 */ 535 536 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 537 res = xyc->ciopb->ctyp; 538 XYC_DONE(xyc, error); 539 if (res != XYCT_450) { 540 if (error) 541 printf(": %s: ", xyc_e2str(error)); 542 printf(": doesn't identify as a 450/451\n"); 543 return; 544 } 545 printf(": Xylogics 450/451"); 546 if (xyc->no_ols) 547 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 548 printf("\n"); 549 if (error) { 550 aprint_error_dev(xyc->sc_dev, "error: %s\n", 551 xyc_e2str(error)); 552 return; 553 } 554 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 555 printf("%s: 24 bit addressing turned off\n", 556 device_xname(xyc->sc_dev)); 557 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 558 printf("to enable 24 bit mode and this driver\n"); 559 return; 560 } 561 562 /* link in interrupt with higher level software */ 563 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 564 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 565 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 566 device_xname(xyc->sc_dev), "intr"); 567 568 callout_init(&xyc->sc_tick_ch, 0); 569 570 /* now we must look for disks using autoconfig */ 571 xa.fullmode = XY_SUB_POLL; 572 xa.booting = 1; 573 574 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 575 (void) config_found(self, (void *) &xa, NULL); 576 577 /* start the watchdog clock */ 578 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 579 580 } 581 582 /* 583 * xymatch: probe for disk. 584 * 585 * note: we almost always say disk is present. this allows us to 586 * spin up and configure a disk after the system is booted (we can 587 * call xyattach!). 588 */ 589 int 590 xymatch(device_t parent, cfdata_t cf, void *aux) 591 { 592 struct xyc_attach_args *xa = aux; 593 594 /* looking for autoconf wildcard or exact match */ 595 596 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 597 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 598 return 0; 599 600 return 1; 601 602 } 603 604 /* 605 * xyattach: attach a disk. this can be called from autoconf and also 606 * from xyopen/xystrategy. 607 */ 608 void 609 xyattach(device_t parent, device_t self, void *aux) 610 { 611 struct xy_softc *xy = device_private(self), *oxy; 612 struct xyc_softc *xyc = device_private(parent); 613 struct xyc_attach_args *xa = aux; 614 int spt, mb, blk, lcv, fmode, s = 0, newstate; 615 struct dkbad *dkb; 616 int rseg, error; 617 bus_dma_segment_t seg; 618 bus_addr_t busaddr; 619 void * dmaddr; 620 char * buf; 621 622 xy->sc_dev = self; 623 624 /* 625 * Always re-initialize the disk structure. We want statistics 626 * to start with a clean slate. 627 */ 628 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 629 630 /* if booting, init the xy_softc */ 631 632 if (xa->booting) { 633 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 634 xy->flags = 0; 635 xy->parent = xyc; 636 637 /* init queue of waiting bufs */ 638 639 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 640 641 xy->xyrq = &xyc->reqs[xa->driveno]; 642 643 } 644 xy->xy_drive = xa->driveno; 645 fmode = xa->fullmode; 646 xyc->sc_drives[xa->driveno] = xy; 647 648 /* if not booting, make sure we are the only process in the attach for 649 * this drive. if locked out, sleep on it. */ 650 651 if (!xa->booting) { 652 s = splbio(); 653 while (xy->state == XY_DRIVE_ATTACHING) { 654 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 655 splx(s); 656 return; 657 } 658 } 659 printf("%s at %s", 660 device_xname(xy->sc_dev), device_xname(xy->parent->sc_dev)); 661 } 662 663 /* we now have control */ 664 xy->state = XY_DRIVE_ATTACHING; 665 newstate = XY_DRIVE_UNKNOWN; 666 667 buf = NULL; 668 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 669 XYFM_BPS, 670 (void **)&buf, 671 &busaddr)) != 0) { 672 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 673 error); 674 return; 675 } 676 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 677 678 /* first try and reset the drive */ 679 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 680 XYC_DONE(xyc, error); 681 if (error == XY_ERR_DNRY) { 682 printf(" drive %d: off-line\n", xa->driveno); 683 goto done; 684 } 685 if (error) { 686 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 687 goto done; 688 } 689 printf(" drive %d: ready", xa->driveno); 690 691 /* 692 * now set drive parameters (to semi-bogus values) so we can read the 693 * disk label. 694 */ 695 xy->pcyl = xy->ncyl = 1; 696 xy->acyl = 0; 697 xy->nhead = 1; 698 xy->nsect = 1; 699 xy->sectpercyl = 1; 700 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 701 xy->dkb.bt_bad[lcv].bt_cyl = 702 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 703 704 /* read disk label */ 705 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 706 xy->drive_type++) { 707 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 708 dmaddr, fmode); 709 XYC_DONE(xyc, error); 710 if (error == XY_ERR_AOK) break; 711 } 712 713 if (error != XY_ERR_AOK) { 714 aprint_normal("\n"); 715 aprint_error_dev(xy->sc_dev, "reading disk label failed: %s\n", 716 xyc_e2str(error)); 717 goto done; 718 } 719 printf(" (drive type %d)\n", xy->drive_type); 720 721 newstate = XY_DRIVE_NOLABEL; 722 723 xy->hw_spt = spt = 0; /* XXX needed ? */ 724 /* Attach the disk: must be before getdisklabel to malloc label */ 725 disk_init(&xy->sc_dk, device_xname(xy->sc_dev), &xydkdriver); 726 disk_attach(&xy->sc_dk); 727 728 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 729 goto done; 730 731 /* inform the user of what is up */ 732 printf("%s: <%s>, pcyl %d\n", device_xname(xy->sc_dev), 733 buf, xy->pcyl); 734 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 735 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 736 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 737 XYFM_BPS); 738 739 /* 740 * 450/451 stupidity: the drive type is encoded into the format 741 * of the disk. the drive type in the IOPB must match the drive 742 * type in the format, or you will not be able to do I/O to the 743 * disk (you get header not found errors). if you have two drives 744 * of different sizes that have the same drive type in their 745 * formatting then you are out of luck. 746 * 747 * this problem was corrected in the 753/7053. 748 */ 749 750 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 751 oxy = xyc->sc_drives[lcv]; 752 if (oxy == NULL || oxy == xy) continue; 753 if (oxy->drive_type != xy->drive_type) continue; 754 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 755 xy->nhead != oxy->nhead) { 756 printf("%s: %s and %s must be the same size!\n", 757 device_xname(xyc->sc_dev), device_xname(xy->sc_dev), 758 device_xname(oxy->sc_dev)); 759 panic("xy drive size mismatch"); 760 } 761 } 762 763 764 /* now set the real drive parameters! */ 765 766 blk = (xy->nsect - 1) + 767 ((xy->nhead - 1) * xy->nsect) + 768 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 769 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 770 XYC_DONE(xyc, error); 771 if (error) { 772 aprint_error_dev(xy->sc_dev, "write drive size failed: %s\n", 773 xyc_e2str(error)); 774 goto done; 775 } 776 newstate = XY_DRIVE_ONLINE; 777 778 /* 779 * read bad144 table. this table resides on the first sector of the 780 * last track of the disk (i.e. second cyl of "acyl" area). 781 */ 782 783 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 784 /* last cyl */ 785 (xy->nhead - 1) * xy->nsect; /* last head */ 786 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 787 dmaddr, fmode); 788 XYC_DONE(xyc, error); 789 if (error) { 790 aprint_error_dev(xy->sc_dev, "reading bad144 failed: %s\n", 791 xyc_e2str(error)); 792 goto done; 793 } 794 795 /* check dkbad for sanity */ 796 dkb = (struct dkbad *) buf; 797 for (lcv = 0; lcv < 126; lcv++) { 798 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 799 dkb->bt_bad[lcv].bt_cyl == 0) && 800 dkb->bt_bad[lcv].bt_trksec == 0xffff) 801 continue; /* blank */ 802 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 803 break; 804 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 805 break; 806 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 807 break; 808 } 809 if (lcv != 126) { 810 aprint_error_dev(xy->sc_dev, "warning: invalid bad144 sector!\n"); 811 } else { 812 memcpy(&xy->dkb, buf, XYFM_BPS); 813 } 814 815 done: 816 if (buf != NULL) { 817 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 818 &seg, rseg, XYFM_BPS, buf); 819 } 820 821 xy->state = newstate; 822 if (!xa->booting) { 823 wakeup(&xy->state); 824 splx(s); 825 } 826 } 827 828 /* 829 * end of autoconfig functions 830 */ 831 832 /* 833 * { b , c } d e v s w f u n c t i o n s 834 */ 835 836 /* 837 * xyclose: close device 838 */ 839 int 840 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 841 { 842 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 843 int part = DISKPART(dev); 844 845 /* clear mask bits */ 846 847 switch (fmt) { 848 case S_IFCHR: 849 xy->sc_dk.dk_copenmask &= ~(1 << part); 850 break; 851 case S_IFBLK: 852 xy->sc_dk.dk_bopenmask &= ~(1 << part); 853 break; 854 } 855 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 856 857 return 0; 858 } 859 860 /* 861 * xydump: crash dump system 862 */ 863 int 864 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 865 { 866 int unit, part; 867 struct xy_softc *xy; 868 869 unit = DISKUNIT(dev); 870 part = DISKPART(dev); 871 872 xy = device_lookup_private(&xy_cd, unit); 873 if (!xy) 874 return ENXIO; 875 876 printf("%s%c: crash dump not supported (yet)\n", device_xname(xy->sc_dev), 877 'a' + part); 878 879 return ENXIO; 880 881 /* outline: globals: "dumplo" == sector number of partition to start 882 * dump at (convert to physical sector with partition table) 883 * "dumpsize" == size of dump in clicks "physmem" == size of physical 884 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 885 * physmem) 886 * 887 * dump a copy of physical memory to the dump device starting at sector 888 * "dumplo" in the swap partition (make sure > 0). map in pages as 889 * we go. use polled I/O. 890 * 891 * XXX how to handle NON_CONTIG? */ 892 893 } 894 895 static enum kauth_device_req 896 xy_getkauthreq(u_char cmd) 897 { 898 enum kauth_device_req req; 899 900 switch (cmd) { 901 case XYCMD_WR: 902 case XYCMD_WTH: 903 case XYCMD_WFM: 904 case XYCMD_WRH: 905 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 906 break; 907 908 case XYCMD_RD: 909 case XYCMD_RTH: 910 case XYCMD_RDH: 911 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 912 break; 913 914 case XYCMD_RDS: 915 case XYCMD_MBD: 916 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 917 break; 918 919 case XYCMD_RST: 920 case XYCMD_SDS: 921 case XYCMD_MBL: 922 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 923 break; 924 925 case XYCMD_NOP: 926 case XYCMD_SK: 927 case XYCMD_ST: 928 case XYCMD_R: 929 default: 930 req = 0; 931 break; 932 } 933 934 return (req); 935 } 936 937 /* 938 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 939 */ 940 int 941 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 942 { 943 struct xy_softc *xy; 944 struct xd_iocmd *xio; 945 int error, s, unit; 946 #ifdef __HAVE_OLD_DISKLABEL 947 struct disklabel newlabel; 948 #endif 949 struct disklabel *lp; 950 951 unit = DISKUNIT(dev); 952 953 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 954 return (ENXIO); 955 956 error = disk_ioctl(&xy->sc_dk, dev, command, addr, flag, l); 957 if (error != EPASSTHROUGH) 958 return error; 959 960 /* switch on ioctl type */ 961 962 switch (command) { 963 case DIOCSBAD: /* set bad144 info */ 964 if ((flag & FWRITE) == 0) 965 return EBADF; 966 s = splbio(); 967 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 968 splx(s); 969 return 0; 970 971 case DIOCSDINFO: /* set disk label */ 972 #ifdef __HAVE_OLD_DISKLABEL 973 case ODIOCSDINFO: 974 if (command == ODIOCSDINFO) { 975 memset(&newlabel, 0, sizeof newlabel); 976 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 977 lp = &newlabel; 978 } else 979 #endif 980 lp = (struct disklabel *)addr; 981 982 if ((flag & FWRITE) == 0) 983 return EBADF; 984 error = setdisklabel(xy->sc_dk.dk_label, 985 lp, /* xy->sc_dk.dk_openmask : */ 0, 986 xy->sc_dk.dk_cpulabel); 987 if (error == 0) { 988 if (xy->state == XY_DRIVE_NOLABEL) 989 xy->state = XY_DRIVE_ONLINE; 990 } 991 return error; 992 993 case DIOCWLABEL: /* change write status of disk label */ 994 if ((flag & FWRITE) == 0) 995 return EBADF; 996 if (*(int *) addr) 997 xy->flags |= XY_WLABEL; 998 else 999 xy->flags &= ~XY_WLABEL; 1000 return 0; 1001 1002 case DIOCWDINFO: /* write disk label */ 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 case ODIOCWDINFO: 1005 if (command == ODIOCWDINFO) { 1006 memset(&newlabel, 0, sizeof newlabel); 1007 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1008 lp = &newlabel; 1009 } else 1010 #endif 1011 lp = (struct disklabel *)addr; 1012 1013 if ((flag & FWRITE) == 0) 1014 return EBADF; 1015 error = setdisklabel(xy->sc_dk.dk_label, 1016 lp, /* xy->sc_dk.dk_openmask : */ 0, 1017 xy->sc_dk.dk_cpulabel); 1018 if (error == 0) { 1019 if (xy->state == XY_DRIVE_NOLABEL) 1020 xy->state = XY_DRIVE_ONLINE; 1021 1022 /* Simulate opening partition 0 so write succeeds. */ 1023 xy->sc_dk.dk_openmask |= (1 << 0); 1024 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1025 xystrategy, xy->sc_dk.dk_label, 1026 xy->sc_dk.dk_cpulabel); 1027 xy->sc_dk.dk_openmask = 1028 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1029 } 1030 return error; 1031 1032 case DIOSXDCMD: { 1033 enum kauth_device_req req; 1034 1035 xio = (struct xd_iocmd *) addr; 1036 req = xy_getkauthreq(xio->cmd); 1037 if ((error = kauth_authorize_device_passthru(l->l_cred, 1038 dev, req, xio)) != 0) 1039 return (error); 1040 return (xyc_ioctlcmd(xy, dev, xio)); 1041 } 1042 1043 default: 1044 return ENOTTY; 1045 } 1046 } 1047 1048 /* 1049 * xyopen: open drive 1050 */ 1051 1052 int 1053 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1054 { 1055 int unit, part; 1056 struct xy_softc *xy; 1057 struct xyc_attach_args xa; 1058 1059 /* first, could it be a valid target? */ 1060 1061 unit = DISKUNIT(dev); 1062 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1063 return (ENXIO); 1064 part = DISKPART(dev); 1065 1066 /* do we need to attach the drive? */ 1067 1068 if (xy->state == XY_DRIVE_UNKNOWN) { 1069 xa.driveno = xy->xy_drive; 1070 xa.fullmode = XY_SUB_WAIT; 1071 xa.booting = 0; 1072 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1073 if (xy->state == XY_DRIVE_UNKNOWN) { 1074 return (EIO); 1075 } 1076 } 1077 /* check for partition */ 1078 1079 if (part != RAW_PART && 1080 (part >= xy->sc_dk.dk_label->d_npartitions || 1081 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1082 return (ENXIO); 1083 } 1084 /* set open masks */ 1085 1086 switch (fmt) { 1087 case S_IFCHR: 1088 xy->sc_dk.dk_copenmask |= (1 << part); 1089 break; 1090 case S_IFBLK: 1091 xy->sc_dk.dk_bopenmask |= (1 << part); 1092 break; 1093 } 1094 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1095 1096 return 0; 1097 } 1098 1099 int 1100 xyread(dev_t dev, struct uio *uio, int flags) 1101 { 1102 1103 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1104 } 1105 1106 int 1107 xywrite(dev_t dev, struct uio *uio, int flags) 1108 { 1109 1110 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1111 } 1112 1113 1114 /* 1115 * xysize: return size of a partition for a dump 1116 */ 1117 1118 int 1119 xysize(dev_t dev) 1120 { 1121 struct xy_softc *xysc; 1122 int unit, part, size, omask; 1123 1124 /* valid unit? */ 1125 unit = DISKUNIT(dev); 1126 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1127 return (-1); 1128 1129 part = DISKPART(dev); 1130 omask = xysc->sc_dk.dk_openmask & (1 << part); 1131 1132 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1133 return (-1); 1134 1135 /* do it */ 1136 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1137 size = -1; /* only give valid size for swap partitions */ 1138 else 1139 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1140 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1141 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1142 return (-1); 1143 return (size); 1144 } 1145 1146 /* 1147 * xystrategy: buffering system interface to xy. 1148 */ 1149 1150 void 1151 xystrategy(struct buf *bp) 1152 { 1153 struct xy_softc *xy; 1154 int s, unit; 1155 struct xyc_attach_args xa; 1156 struct disklabel *lp; 1157 daddr_t blkno; 1158 1159 unit = DISKUNIT(bp->b_dev); 1160 1161 /* check for live device */ 1162 1163 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1164 bp->b_blkno < 0 || 1165 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1166 bp->b_error = EINVAL; 1167 goto done; 1168 } 1169 /* do we need to attach the drive? */ 1170 1171 if (xy->state == XY_DRIVE_UNKNOWN) { 1172 xa.driveno = xy->xy_drive; 1173 xa.fullmode = XY_SUB_WAIT; 1174 xa.booting = 0; 1175 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1176 if (xy->state == XY_DRIVE_UNKNOWN) { 1177 bp->b_error = EIO; 1178 goto done; 1179 } 1180 } 1181 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1182 /* no I/O to unlabeled disks, unless raw partition */ 1183 bp->b_error = EIO; 1184 goto done; 1185 } 1186 /* short circuit zero length request */ 1187 1188 if (bp->b_bcount == 0) 1189 goto done; 1190 1191 /* check bounds with label (disksubr.c). Determine the size of the 1192 * transfer, and make sure it is within the boundaries of the 1193 * partition. Adjust transfer if needed, and signal errors or early 1194 * completion. */ 1195 1196 lp = xy->sc_dk.dk_label; 1197 1198 if (bounds_check_with_label(&xy->sc_dk, bp, 1199 (xy->flags & XY_WLABEL) != 0) <= 0) 1200 goto done; 1201 1202 /* 1203 * Now convert the block number to absolute and put it in 1204 * terms of the device's logical block size. 1205 */ 1206 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1207 if (DISKPART(bp->b_dev) != RAW_PART) 1208 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1209 1210 bp->b_rawblkno = blkno; 1211 1212 /* 1213 * now we know we have a valid buf structure that we need to do I/O 1214 * on. 1215 */ 1216 s = splbio(); /* protect the queues */ 1217 1218 bufq_put(xy->xyq, bp); 1219 1220 /* start 'em up */ 1221 1222 xyc_start(xy->parent, NULL); 1223 1224 /* done! */ 1225 1226 splx(s); 1227 return; 1228 1229 done: /* tells upper layers we are done with this 1230 * buf */ 1231 bp->b_resid = bp->b_bcount; 1232 biodone(bp); 1233 } 1234 /* 1235 * end of {b,c}devsw functions 1236 */ 1237 1238 /* 1239 * i n t e r r u p t f u n c t i o n 1240 * 1241 * xycintr: hardware interrupt. 1242 */ 1243 int 1244 xycintr(void *v) 1245 { 1246 struct xyc_softc *xycsc = v; 1247 1248 /* kick the event counter */ 1249 1250 xycsc->sc_intrcnt.ev_count++; 1251 1252 /* remove as many done IOPBs as possible */ 1253 1254 xyc_remove_iorq(xycsc); 1255 1256 /* start any iorq's already waiting */ 1257 1258 xyc_start(xycsc, NULL); 1259 1260 return (1); 1261 } 1262 /* 1263 * end of interrupt function 1264 */ 1265 1266 /* 1267 * i n t e r n a l f u n c t i o n s 1268 */ 1269 1270 /* 1271 * xyc_rqinit: fill out the fields of an I/O request 1272 */ 1273 1274 inline void 1275 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) 1276 { 1277 rq->xyc = xyc; 1278 rq->xy = xy; 1279 rq->ttl = XYC_MAXTTL + 10; 1280 rq->mode = md; 1281 rq->tries = rq->errnum = rq->lasterror = 0; 1282 rq->blockno = blk; 1283 rq->sectcnt = cnt; 1284 rq->dbuf = db; 1285 rq->buf = bp; 1286 } 1287 1288 /* 1289 * xyc_rqtopb: load up an IOPB based on an iorq 1290 */ 1291 1292 void 1293 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1294 { 1295 u_long block, dp; 1296 1297 /* normal IOPB case, standard stuff */ 1298 1299 /* chain bit handled later */ 1300 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1301 iopb->com = cmd; 1302 iopb->errnum = 0; 1303 iopb->errs = 0; 1304 iopb->done = 0; 1305 if (iorq->xy) { 1306 iopb->unit = iorq->xy->xy_drive; 1307 iopb->dt = iorq->xy->drive_type; 1308 } else { 1309 iopb->unit = 0; 1310 iopb->dt = 0; 1311 } 1312 block = iorq->blockno; 1313 if (iorq->xy == NULL || block == 0) { 1314 iopb->sect = iopb->head = iopb->cyl = 0; 1315 } else { 1316 iopb->sect = block % iorq->xy->nsect; 1317 block = block / iorq->xy->nsect; 1318 iopb->head = block % iorq->xy->nhead; 1319 block = block / iorq->xy->nhead; 1320 iopb->cyl = block; 1321 } 1322 iopb->scnt = iorq->sectcnt; 1323 dp = (u_long) iorq->dbuf; 1324 if (iorq->dbuf == NULL) { 1325 iopb->dataa = 0; 1326 iopb->datar = 0; 1327 } else { 1328 iopb->dataa = (dp & 0xffff); 1329 iopb->datar = ((dp & 0xff0000) >> 16); 1330 } 1331 iopb->subfn = subfun; 1332 } 1333 1334 1335 /* 1336 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1337 */ 1338 1339 int 1340 xyc_unbusy(struct xyc *xyc, int del) 1341 { 1342 while (del-- > 0) { 1343 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1344 break; 1345 DELAY(1); 1346 } 1347 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1348 } 1349 1350 /* 1351 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1352 * note that NORM requests are handled separately. 1353 */ 1354 int 1355 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1356 int scnt, char *dptr, int fullmode) 1357 { 1358 int submode = XY_STATE(fullmode); 1359 struct xy_iorq *iorq = xycsc->ciorq; 1360 struct xy_iopb *iopb = xycsc->ciopb; 1361 1362 /* 1363 * is someone else using the control iopq wait for it if we can 1364 */ 1365 start: 1366 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1367 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1368 return(XY_ERR_FAIL); 1369 goto start; 1370 } 1371 1372 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1373 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1374 iorq->mode = XY_SUB_FREE; 1375 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1376 } 1377 1378 /* init iorq/iopb */ 1379 1380 xyc_rqinit(iorq, xycsc, 1381 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1382 fullmode, block, scnt, dptr, NULL); 1383 1384 /* load IOPB from iorq */ 1385 1386 xyc_rqtopb(iorq, iopb, cmd, subfn); 1387 1388 /* submit it for processing */ 1389 1390 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1391 1392 return(XY_ERR_AOK); 1393 } 1394 1395 /* 1396 * xyc_startbuf 1397 * start a buffer for running 1398 */ 1399 1400 int 1401 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1402 { 1403 #ifdef XYC_DEBUG 1404 int partno; 1405 #endif 1406 int error; 1407 struct xy_iorq *iorq; 1408 struct xy_iopb *iopb; 1409 u_long block; 1410 1411 iorq = xysc->xyrq; 1412 iopb = iorq->iopb; 1413 1414 /* get buf */ 1415 1416 if (bp == NULL) 1417 panic("xyc_startbuf null buf"); 1418 1419 #ifdef XYC_DEBUG 1420 partno = DISKPART(bp->b_dev); 1421 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1422 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1423 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1424 bp->b_bcount, bp->b_data); 1425 #endif 1426 1427 /* 1428 * load request. 1429 * 1430 * note that iorq points to the buffer as mapped into DVMA space, 1431 * where as the bp->b_data points to its non-DVMA mapping. 1432 */ 1433 1434 block = bp->b_rawblkno; 1435 1436 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1437 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1438 if (error != 0) { 1439 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1440 return (XY_ERR_FAIL); /* XXX: need some sort of 1441 * call-back scheme here? */ 1442 } 1443 1444 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1445 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1446 ? BUS_DMASYNC_PREREAD 1447 : BUS_DMASYNC_PREWRITE); 1448 1449 /* init iorq and load iopb from it */ 1450 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1451 bp->b_bcount / XYFM_BPS, 1452 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1453 bp); 1454 1455 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1456 1457 /* Instrumentation. */ 1458 disk_busy(&xysc->sc_dk); 1459 1460 return (XY_ERR_AOK); 1461 } 1462 1463 1464 /* 1465 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1466 * if ok. if it fail returns an error code. type is XY_SUB_*. 1467 * 1468 * note: caller frees iorq in all cases except NORM 1469 * 1470 * return value: 1471 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1472 * WAIT: XY_AOK (success), <error-code> (failed) 1473 * POLL: <same as WAIT> 1474 * NOQ : <same as NORM> 1475 * 1476 * there are three sources for i/o requests: 1477 * [1] xystrategy: normal block I/O, using "struct buf" system. 1478 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1479 * [3] open/ioctl: these are I/O requests done in the context of a process, 1480 * and the process should block until they are done. 1481 * 1482 * software state is stored in the iorq structure. each iorq has an 1483 * iopb structure. the hardware understands the iopb structure. 1484 * every command must go through an iopb. a 450 handles one iopb at a 1485 * time, where as a 451 can take them in chains. [the 450 claims it 1486 * can handle chains, but is appears to be buggy...] iopb are allocated 1487 * in DVMA space at boot up time. each disk gets one iopb, and the 1488 * controller gets one (for POLL and WAIT commands). what happens if 1489 * the iopb is busy? for i/o type [1], the buffers are queued at the 1490 * "buff" layer and * picked up later by the interrupt routine. for case 1491 * [2] we can only be blocked if there is a WAIT type I/O request being 1492 * run. since this can only happen when we are crashing, we wait a sec 1493 * and then steal the IOPB. for case [3] the process can sleep 1494 * on the iorq free list until some iopbs are available. 1495 */ 1496 1497 1498 int 1499 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1500 { 1501 struct xy_iopb *dmaiopb; 1502 1503 #ifdef XYC_DEBUG 1504 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1505 device_xname(xycsc->sc_dev), iorq, type); 1506 #endif 1507 1508 /* first check and see if controller is busy */ 1509 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1510 #ifdef XYC_DEBUG 1511 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1512 #endif 1513 if (type == XY_SUB_NOQ) 1514 return (XY_ERR_FAIL); /* failed */ 1515 switch (type) { 1516 case XY_SUB_NORM: 1517 return XY_ERR_AOK; /* success */ 1518 case XY_SUB_WAIT: 1519 while (iorq->iopb->done == 0) { 1520 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1521 } 1522 return (iorq->errnum); 1523 case XY_SUB_POLL: /* steal controller */ 1524 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1525 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1526 panic("xyc_submit_iorq: stuck xyc"); 1527 printf("%s: stole controller\n", 1528 device_xname(xycsc->sc_dev)); 1529 break; 1530 default: 1531 panic("xyc_submit_iorq adding"); 1532 } 1533 } 1534 1535 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1536 if (dmaiopb == NULL) { /* nothing doing? */ 1537 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1538 return(XY_ERR_AOK); 1539 panic("xyc_submit_iorq: xyc_chain failed!"); 1540 } 1541 1542 XYC_GO(xycsc->xyc, dmaiopb); 1543 1544 /* command now running, wrap it up */ 1545 switch (type) { 1546 case XY_SUB_NORM: 1547 case XY_SUB_NOQ: 1548 return (XY_ERR_AOK); /* success */ 1549 case XY_SUB_WAIT: 1550 while (iorq->iopb->done == 0) { 1551 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1552 } 1553 return (iorq->errnum); 1554 case XY_SUB_POLL: 1555 return (xyc_piodriver(xycsc, iorq)); 1556 default: 1557 panic("xyc_submit_iorq wrap up"); 1558 } 1559 panic("xyc_submit_iorq"); 1560 return 0; /* not reached */ 1561 } 1562 1563 1564 /* 1565 * xyc_chain: build a chain. return dvma address of first element in 1566 * the chain. iorq != NULL: means we only want that item on the chain. 1567 */ 1568 1569 struct xy_iopb * 1570 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1571 { 1572 int togo, chain, hand; 1573 1574 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1575 1576 /* 1577 * promote control IOPB to the top 1578 */ 1579 if (iorq == NULL) { 1580 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1581 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1582 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1583 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1584 } 1585 1586 /* 1587 * special case: if iorq != NULL then we have a POLL or WAIT request. 1588 * we let these take priority and do them first. 1589 */ 1590 if (iorq) { 1591 xycsc->xy_chain[0] = iorq; 1592 iorq->iopb->chen = 0; 1593 return(iorq->dmaiopb); 1594 } 1595 1596 /* 1597 * NORM case: do round robin and maybe chain (if allowed and possible) 1598 */ 1599 chain = 0; 1600 hand = xycsc->xy_hand; 1601 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1602 1603 for (togo = XYC_MAXIOPB; togo > 0; 1604 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1605 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1606 1607 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1608 xycsc->iopbase[hand].done) 1609 continue; /* not ready-for-i/o */ 1610 1611 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1612 iopb = xycsc->xy_chain[chain]->iopb; 1613 iopb->chen = 0; 1614 if (chain != 0) { 1615 /* adding a link to a chain */ 1616 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1617 prev_iopb->chen = 1; 1618 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1619 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1620 } else { 1621 /* head of chain */ 1622 iorq = xycsc->xy_chain[chain]; 1623 } 1624 chain++; 1625 1626 /* quit if chaining dis-allowed */ 1627 if (xycsc->no_ols) 1628 break; 1629 } 1630 1631 return(iorq ? iorq->dmaiopb : NULL); 1632 } 1633 1634 /* 1635 * xyc_piodriver 1636 * 1637 * programmed i/o driver. this function takes over the computer 1638 * and drains off the polled i/o request. it returns the status of the iorq 1639 * the caller is interesting in. 1640 */ 1641 int 1642 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1643 { 1644 int nreset = 0; 1645 int retval = 0; 1646 u_long res; 1647 #ifdef XYC_DEBUG 1648 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1649 #endif 1650 1651 while (iorq->iopb->done == 0) { 1652 1653 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1654 1655 /* we expect some progress soon */ 1656 if (res == XY_ERR_FAIL && nreset >= 2) { 1657 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1658 #ifdef XYC_DEBUG 1659 printf("xyc_piodriver: timeout\n"); 1660 #endif 1661 return (XY_ERR_FAIL); 1662 } 1663 if (res == XY_ERR_FAIL) { 1664 if (xyc_reset(xycsc, 0, 1665 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1666 XY_ERR_FAIL, 1667 0) == XY_ERR_FAIL) 1668 return (XY_ERR_FAIL); /* flushes all but POLL 1669 * requests, resets */ 1670 continue; 1671 } 1672 1673 xyc_remove_iorq(xycsc); /* may resubmit request */ 1674 1675 if (iorq->iopb->done == 0) 1676 xyc_start(xycsc, iorq); 1677 } 1678 1679 /* get return value */ 1680 1681 retval = iorq->errnum; 1682 1683 #ifdef XYC_DEBUG 1684 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1685 iorq->errnum, xyc_e2str(iorq->errnum)); 1686 #endif 1687 1688 /* start up any bufs that have queued */ 1689 1690 xyc_start(xycsc, NULL); 1691 1692 return (retval); 1693 } 1694 1695 /* 1696 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1697 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1698 */ 1699 void 1700 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1701 { 1702 struct xy_iopb tmpiopb; 1703 struct xy_iopb *iopb; 1704 int del; 1705 1706 iopb = xycsc->ciopb; 1707 1708 /* Save contents */ 1709 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1710 1711 iopb->chen = iopb->done = iopb->errs = 0; 1712 iopb->ien = 0; 1713 iopb->com = XYCMD_RST; 1714 iopb->unit = xysc->xy_drive; 1715 1716 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1717 1718 del = XYC_RESETUSEC; 1719 while (del > 0) { 1720 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1721 break; 1722 DELAY(1); 1723 del--; 1724 } 1725 1726 if (del <= 0 || iopb->errs) { 1727 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1728 xyc_e2str(iopb->errnum)); 1729 del = xycsc->xyc->xyc_rsetup; 1730 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1731 panic("xyc_reset"); 1732 } else { 1733 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1734 } 1735 1736 /* Restore contents */ 1737 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1738 } 1739 1740 1741 /* 1742 * xyc_reset: reset everything: requests are marked as errors except 1743 * a polled request (which is resubmitted) 1744 */ 1745 int 1746 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1747 int error, struct xy_softc *xysc) 1748 { 1749 int del = 0, lcv, retval = XY_ERR_AOK; 1750 1751 /* soft reset hardware */ 1752 1753 if (!quiet) 1754 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1755 del = xycsc->xyc->xyc_rsetup; 1756 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1757 if (del == XY_ERR_FAIL) { 1758 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1759 retval = XY_ERR_FAIL; 1760 } 1761 if (xysc) 1762 xyc_xyreset(xycsc, xysc); 1763 1764 /* fix queues based on "blast-mode" */ 1765 1766 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1767 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1768 1769 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1770 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1771 XY_STATE(iorq->mode) != XY_SUB_NORM) 1772 /* is it active? */ 1773 continue; 1774 1775 if (blastmode == XY_RSET_ALL || 1776 blastmode != iorq) { 1777 /* failed */ 1778 iorq->errnum = error; 1779 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1780 switch (XY_STATE(iorq->mode)) { 1781 case XY_SUB_NORM: 1782 iorq->buf->b_error = EIO; 1783 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1784 1785 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1786 iorq->dmamap->dm_mapsize, 1787 (iorq->buf->b_flags & B_READ) 1788 ? BUS_DMASYNC_POSTREAD 1789 : BUS_DMASYNC_POSTWRITE); 1790 1791 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1792 1793 (void)bufq_get(iorq->xy->xyq); 1794 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1795 (xycsc->reqs[lcv].buf->b_bcount - 1796 xycsc->reqs[lcv].buf->b_resid), 1797 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1798 biodone(iorq->buf); 1799 iorq->mode = XY_SUB_FREE; 1800 break; 1801 case XY_SUB_WAIT: 1802 wakeup(iorq); 1803 case XY_SUB_POLL: 1804 iorq->mode = 1805 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1806 break; 1807 } 1808 1809 } else { 1810 1811 /* resubmit, no need to do anything here */ 1812 } 1813 } 1814 1815 /* 1816 * now, if stuff is waiting, start it. 1817 * since we just reset it should go 1818 */ 1819 xyc_start(xycsc, NULL); 1820 1821 return (retval); 1822 } 1823 1824 /* 1825 * xyc_start: start waiting buffers 1826 */ 1827 1828 void 1829 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1830 { 1831 int lcv; 1832 struct xy_softc *xy; 1833 1834 if (iorq == NULL) { 1835 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1836 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1837 if (bufq_peek(xy->xyq) == NULL) continue; 1838 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1839 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1840 } 1841 } 1842 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1843 } 1844 1845 /* 1846 * xyc_remove_iorq: remove "done" IOPB's. 1847 */ 1848 1849 int 1850 xyc_remove_iorq(struct xyc_softc *xycsc) 1851 { 1852 int errnum, rq, comm, errs; 1853 struct xyc *xyc = xycsc->xyc; 1854 u_long addr; 1855 struct xy_iopb *iopb; 1856 struct xy_iorq *iorq; 1857 struct buf *bp; 1858 1859 if (xyc->xyc_csr & XYC_DERR) { 1860 /* 1861 * DOUBLE ERROR: should never happen under normal use. This 1862 * error is so bad, you can't even tell which IOPB is bad, so 1863 * we dump them all. 1864 */ 1865 errnum = XY_ERR_DERR; 1866 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1867 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1868 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1869 panic("xyc_remove_iorq: controller DEAD"); 1870 } 1871 return (XY_ERR_AOK); 1872 } 1873 1874 /* 1875 * get iopb that is done, loop down the chain 1876 */ 1877 1878 if (xyc->xyc_csr & XYC_ERR) { 1879 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1880 } 1881 if (xyc->xyc_csr & XYC_IPND) { 1882 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1883 } 1884 1885 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1886 iorq = xycsc->xy_chain[rq]; 1887 if (iorq == NULL) break; /* done ! */ 1888 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1889 continue; /* free, or done */ 1890 iopb = iorq->iopb; 1891 if (iopb->done == 0) 1892 continue; /* not done yet */ 1893 1894 comm = iopb->com; 1895 errs = iopb->errs; 1896 1897 if (errs) 1898 iorq->errnum = iopb->errnum; 1899 else 1900 iorq->errnum = 0; 1901 1902 /* handle non-fatal errors */ 1903 1904 if (errs && 1905 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1906 continue; /* AOK: we resubmitted it */ 1907 1908 1909 /* this iorq is now done (hasn't been restarted or anything) */ 1910 1911 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1912 xyc_perror(iorq, iopb, 0); 1913 1914 /* now, if read/write check to make sure we got all the data 1915 * we needed. (this may not be the case if we got an error in 1916 * the middle of a multisector request). */ 1917 1918 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1919 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1920 /* we just successfully processed a bad144 sector 1921 * note: if we are in bad 144 mode, the pointers have 1922 * been advanced already (see above) and are pointing 1923 * at the bad144 sector. to exit bad144 mode, we 1924 * must advance the pointers 1 sector and issue a new 1925 * request if there are still sectors left to process 1926 * 1927 */ 1928 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1929 1930 /* exit b144 mode */ 1931 iorq->mode = iorq->mode & (~XY_MODE_B144); 1932 1933 if (iorq->sectcnt) { /* more to go! */ 1934 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1935 iopb->errs = iopb->done = 0; 1936 iorq->tries = 0; 1937 iopb->scnt = iorq->sectcnt; 1938 iopb->cyl = iorq->blockno / 1939 iorq->xy->sectpercyl; 1940 iopb->head = 1941 (iorq->blockno / iorq->xy->nhead) % 1942 iorq->xy->nhead; 1943 iopb->sect = iorq->blockno % XYFM_BPS; 1944 addr = (u_long) iorq->dbuf; 1945 iopb->dataa = (addr & 0xffff); 1946 iopb->datar = ((addr & 0xff0000) >> 16); 1947 /* will resubit at end */ 1948 continue; 1949 } 1950 } 1951 /* final cleanup, totally done with this request */ 1952 1953 switch (XY_STATE(iorq->mode)) { 1954 case XY_SUB_NORM: 1955 bp = iorq->buf; 1956 if (errs) { 1957 bp->b_error = EIO; 1958 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1959 } else { 1960 bp->b_resid = 0; /* done */ 1961 } 1962 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1963 iorq->dmamap->dm_mapsize, 1964 (iorq->buf->b_flags & B_READ) 1965 ? BUS_DMASYNC_POSTREAD 1966 : BUS_DMASYNC_POSTWRITE); 1967 1968 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1969 1970 (void)bufq_get(iorq->xy->xyq); 1971 disk_unbusy(&iorq->xy->sc_dk, 1972 (bp->b_bcount - bp->b_resid), 1973 (bp->b_flags & B_READ)); 1974 iorq->mode = XY_SUB_FREE; 1975 biodone(bp); 1976 break; 1977 case XY_SUB_WAIT: 1978 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1979 wakeup(iorq); 1980 break; 1981 case XY_SUB_POLL: 1982 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1983 break; 1984 } 1985 } 1986 1987 return (XY_ERR_AOK); 1988 } 1989 1990 /* 1991 * xyc_perror: print error. 1992 * - if still_trying is true: we got an error, retried and got a 1993 * different error. in that case lasterror is the old error, 1994 * and errnum is the new one. 1995 * - if still_trying is not true, then if we ever had an error it 1996 * is in lasterror. also, if iorq->errnum == 0, then we recovered 1997 * from that error (otherwise iorq->errnum == iorq->lasterror). 1998 */ 1999 void 2000 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 2001 { 2002 2003 int error = iorq->lasterror; 2004 2005 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2006 : device_xname(iorq->xyc->sc_dev)); 2007 if (iorq->buf) 2008 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2009 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2010 printf("%s %d/%d/%d: ", 2011 (iopb->com == XYCMD_RD) ? "read" : "write", 2012 iopb->cyl, iopb->head, iopb->sect); 2013 printf("%s", xyc_e2str(error)); 2014 2015 if (still_trying) 2016 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2017 else 2018 if (iorq->errnum == 0) 2019 printf(" [recovered in %d tries]", iorq->tries); 2020 2021 printf("\n"); 2022 } 2023 2024 /* 2025 * xyc_error: non-fatal error encountered... recover. 2026 * return AOK if resubmitted, return FAIL if this iopb is done 2027 */ 2028 int 2029 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2030 int comm) 2031 { 2032 int errnum = iorq->errnum; 2033 int erract = xyc_entoact(errnum); 2034 int oldmode, advance; 2035 #ifdef __sparc__ 2036 int i; 2037 #endif 2038 2039 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2040 oldmode = iorq->mode; 2041 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2042 /* make xyc_start ignore us */ 2043 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2044 iorq->mode = oldmode; 2045 } 2046 /* check for read/write to a sector in bad144 table if bad: redirect 2047 * request to bad144 area */ 2048 2049 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2050 (iorq->mode & XY_MODE_B144) == 0) { 2051 advance = iorq->sectcnt - iopb->scnt; 2052 XYC_ADVANCE(iorq, advance); 2053 #ifdef __sparc__ 2054 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2055 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2056 iorq->blockno % iorq->xy->nsect)) != -1) { 2057 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2058 * redirect */ 2059 iopb->errnum = iopb->done = iopb->errs = 0; 2060 iopb->scnt = 1; 2061 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2062 /* second to last acyl */ 2063 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2064 * standard */ 2065 iopb->head = i / iorq->xy->nhead; 2066 iopb->sect = i % iorq->xy->nhead; 2067 /* will resubmit when we come out of remove_iorq */ 2068 return (XY_ERR_AOK); /* recovered! */ 2069 } 2070 #endif 2071 } 2072 2073 /* 2074 * it isn't a bad144 sector, must be real error! see if we can retry 2075 * it? 2076 */ 2077 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2078 xyc_perror(iorq, iopb, 1); /* inform of error state 2079 * change */ 2080 iorq->lasterror = errnum; 2081 2082 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2083 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2084 iorq->tries++; 2085 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2086 /* will resubmit at end of remove_iorq */ 2087 return (XY_ERR_AOK); /* recovered! */ 2088 } 2089 2090 /* failed to recover from this error */ 2091 return (XY_ERR_FAIL); 2092 } 2093 2094 /* 2095 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2096 */ 2097 void 2098 xyc_tick(void *arg) 2099 { 2100 struct xyc_softc *xycsc = arg; 2101 int lcv, s, reset = 0; 2102 2103 /* reduce ttl for each request if one goes to zero, reset xyc */ 2104 s = splbio(); 2105 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2106 if (xycsc->reqs[lcv].mode == 0 || 2107 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2108 continue; 2109 xycsc->reqs[lcv].ttl--; 2110 if (xycsc->reqs[lcv].ttl == 0) 2111 reset = 1; 2112 } 2113 if (reset) { 2114 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2115 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2116 } 2117 splx(s); 2118 2119 /* until next time */ 2120 2121 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2122 } 2123 2124 /* 2125 * xyc_ioctlcmd: this function provides a user level interface to the 2126 * controller via ioctl. this allows "format" programs to be written 2127 * in user code, and is also useful for some debugging. we return 2128 * an error code. called at user priority. 2129 * 2130 * XXX missing a few commands (see the 7053 driver for ideas) 2131 */ 2132 int 2133 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2134 { 2135 int s, rqno, dummy = 0; 2136 char *dvmabuf = NULL, *buf = NULL; 2137 struct xyc_softc *xycsc; 2138 int rseg, error; 2139 bus_dma_segment_t seg; 2140 2141 /* check sanity of requested command */ 2142 2143 switch (xio->cmd) { 2144 2145 case XYCMD_NOP: /* no op: everything should be zero */ 2146 if (xio->subfn || xio->dptr || xio->dlen || 2147 xio->block || xio->sectcnt) 2148 return (EINVAL); 2149 break; 2150 2151 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2152 case XYCMD_WR: 2153 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2154 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2155 return (EINVAL); 2156 break; 2157 2158 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2159 return (EINVAL); 2160 2161 break; 2162 2163 default: 2164 return (EINVAL);/* ??? */ 2165 } 2166 2167 xycsc = xy->parent; 2168 2169 /* create DVMA buffer for request if needed */ 2170 if (xio->dlen) { 2171 bus_addr_t busbuf; 2172 2173 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2174 &seg, &rseg, 2175 xio->dlen, (void **)&buf, 2176 &busbuf)) != 0) { 2177 return (error); 2178 } 2179 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2180 2181 if (xio->cmd == XYCMD_WR) { 2182 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2183 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2184 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2185 return (error); 2186 } 2187 } 2188 } 2189 /* do it! */ 2190 2191 error = 0; 2192 s = splbio(); 2193 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2194 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2195 if (rqno == XY_ERR_FAIL) { 2196 error = EIO; 2197 goto done; 2198 } 2199 xio->errnum = xycsc->ciorq->errnum; 2200 xio->tries = xycsc->ciorq->tries; 2201 XYC_DONE(xycsc, dummy); 2202 2203 if (xio->cmd == XYCMD_RD) 2204 error = copyout(buf, xio->dptr, xio->dlen); 2205 2206 done: 2207 splx(s); 2208 if (dvmabuf) { 2209 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2210 xio->dlen, buf); 2211 } 2212 return (error); 2213 } 2214 2215 /* 2216 * xyc_e2str: convert error code number into an error string 2217 */ 2218 const char * 2219 xyc_e2str(int no) 2220 { 2221 switch (no) { 2222 case XY_ERR_FAIL: 2223 return ("Software fatal error"); 2224 case XY_ERR_DERR: 2225 return ("DOUBLE ERROR"); 2226 case XY_ERR_AOK: 2227 return ("Successful completion"); 2228 case XY_ERR_IPEN: 2229 return("Interrupt pending"); 2230 case XY_ERR_BCFL: 2231 return("Busy conflict"); 2232 case XY_ERR_TIMO: 2233 return("Operation timeout"); 2234 case XY_ERR_NHDR: 2235 return("Header not found"); 2236 case XY_ERR_HARD: 2237 return("Hard ECC error"); 2238 case XY_ERR_ICYL: 2239 return("Illegal cylinder address"); 2240 case XY_ERR_ISEC: 2241 return("Illegal sector address"); 2242 case XY_ERR_SMAL: 2243 return("Last sector too small"); 2244 case XY_ERR_SACK: 2245 return("Slave ACK error (non-existent memory)"); 2246 case XY_ERR_CHER: 2247 return("Cylinder and head/header error"); 2248 case XY_ERR_SRTR: 2249 return("Auto-seek retry successful"); 2250 case XY_ERR_WPRO: 2251 return("Write-protect error"); 2252 case XY_ERR_UIMP: 2253 return("Unimplemented command"); 2254 case XY_ERR_DNRY: 2255 return("Drive not ready"); 2256 case XY_ERR_SZER: 2257 return("Sector count zero"); 2258 case XY_ERR_DFLT: 2259 return("Drive faulted"); 2260 case XY_ERR_ISSZ: 2261 return("Illegal sector size"); 2262 case XY_ERR_SLTA: 2263 return("Self test A"); 2264 case XY_ERR_SLTB: 2265 return("Self test B"); 2266 case XY_ERR_SLTC: 2267 return("Self test C"); 2268 case XY_ERR_SOFT: 2269 return("Soft ECC error"); 2270 case XY_ERR_SFOK: 2271 return("Soft ECC error recovered"); 2272 case XY_ERR_IHED: 2273 return("Illegal head"); 2274 case XY_ERR_DSEQ: 2275 return("Disk sequencer error"); 2276 case XY_ERR_SEEK: 2277 return("Seek error"); 2278 default: 2279 return ("Unknown error"); 2280 } 2281 } 2282 2283 int 2284 xyc_entoact(int errnum) 2285 { 2286 switch (errnum) { 2287 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2288 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2289 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2290 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2291 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2292 2293 return(XY_ERA_PROG); /* program error ! */ 2294 2295 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2296 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2297 case XY_ERR_SOFT: 2298 2299 return(XY_ERA_HARD); /* hard error, retry */ 2300 2301 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2302 2303 return(XY_ERA_RSET); /* hard error reset */ 2304 2305 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2306 2307 return(XY_ERA_SOFT); /* an FYI error */ 2308 2309 case XY_ERR_WPRO: 2310 2311 return(XY_ERA_WPRO); /* write protect */ 2312 } 2313 2314 return(XY_ERA_PROG); /* ??? */ 2315 } 2316
Indexes created Tue Sep 30 11:09:46 GMT 2025