xy.c revision 1.97
1 /* $NetBSD: xy.c,v 1.97 2014/07/25 08:10:39 dholland 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 1.97 2014/07/25 08:10:39 dholland 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 /* switch on ioctl type */ 957 958 switch (command) { 959 case DIOCSBAD: /* set bad144 info */ 960 if ((flag & FWRITE) == 0) 961 return EBADF; 962 s = splbio(); 963 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 964 splx(s); 965 return 0; 966 967 case DIOCGDINFO: /* get disk label */ 968 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 969 return 0; 970 #ifdef __HAVE_OLD_DISKLABEL 971 case ODIOCGDINFO: 972 newlabel = *(xy->sc_dk.dk_label); 973 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 974 return ENOTTY; 975 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 976 return 0; 977 #endif 978 979 case DIOCGPART: /* get partition info */ 980 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 981 ((struct partinfo *) addr)->part = 982 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 983 return 0; 984 985 case DIOCSDINFO: /* set disk label */ 986 #ifdef __HAVE_OLD_DISKLABEL 987 case ODIOCSDINFO: 988 if (command == ODIOCSDINFO) { 989 memset(&newlabel, 0, sizeof newlabel); 990 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 991 lp = &newlabel; 992 } else 993 #endif 994 lp = (struct disklabel *)addr; 995 996 if ((flag & FWRITE) == 0) 997 return EBADF; 998 error = setdisklabel(xy->sc_dk.dk_label, 999 lp, /* xy->sc_dk.dk_openmask : */ 0, 1000 xy->sc_dk.dk_cpulabel); 1001 if (error == 0) { 1002 if (xy->state == XY_DRIVE_NOLABEL) 1003 xy->state = XY_DRIVE_ONLINE; 1004 } 1005 return error; 1006 1007 case DIOCWLABEL: /* change write status of disk label */ 1008 if ((flag & FWRITE) == 0) 1009 return EBADF; 1010 if (*(int *) addr) 1011 xy->flags |= XY_WLABEL; 1012 else 1013 xy->flags &= ~XY_WLABEL; 1014 return 0; 1015 1016 case DIOCWDINFO: /* write disk label */ 1017 #ifdef __HAVE_OLD_DISKLABEL 1018 case ODIOCWDINFO: 1019 if (command == ODIOCWDINFO) { 1020 memset(&newlabel, 0, sizeof newlabel); 1021 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1022 lp = &newlabel; 1023 } else 1024 #endif 1025 lp = (struct disklabel *)addr; 1026 1027 if ((flag & FWRITE) == 0) 1028 return EBADF; 1029 error = setdisklabel(xy->sc_dk.dk_label, 1030 lp, /* xy->sc_dk.dk_openmask : */ 0, 1031 xy->sc_dk.dk_cpulabel); 1032 if (error == 0) { 1033 if (xy->state == XY_DRIVE_NOLABEL) 1034 xy->state = XY_DRIVE_ONLINE; 1035 1036 /* Simulate opening partition 0 so write succeeds. */ 1037 xy->sc_dk.dk_openmask |= (1 << 0); 1038 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1039 xystrategy, xy->sc_dk.dk_label, 1040 xy->sc_dk.dk_cpulabel); 1041 xy->sc_dk.dk_openmask = 1042 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1043 } 1044 return error; 1045 1046 case DIOSXDCMD: { 1047 enum kauth_device_req req; 1048 1049 xio = (struct xd_iocmd *) addr; 1050 req = xy_getkauthreq(xio->cmd); 1051 if ((error = kauth_authorize_device_passthru(l->l_cred, 1052 dev, req, xio)) != 0) 1053 return (error); 1054 return (xyc_ioctlcmd(xy, dev, xio)); 1055 } 1056 1057 default: 1058 return ENOTTY; 1059 } 1060 } 1061 1062 /* 1063 * xyopen: open drive 1064 */ 1065 1066 int 1067 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1068 { 1069 int unit, part; 1070 struct xy_softc *xy; 1071 struct xyc_attach_args xa; 1072 1073 /* first, could it be a valid target? */ 1074 1075 unit = DISKUNIT(dev); 1076 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1077 return (ENXIO); 1078 part = DISKPART(dev); 1079 1080 /* do we need to attach the drive? */ 1081 1082 if (xy->state == XY_DRIVE_UNKNOWN) { 1083 xa.driveno = xy->xy_drive; 1084 xa.fullmode = XY_SUB_WAIT; 1085 xa.booting = 0; 1086 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1087 if (xy->state == XY_DRIVE_UNKNOWN) { 1088 return (EIO); 1089 } 1090 } 1091 /* check for partition */ 1092 1093 if (part != RAW_PART && 1094 (part >= xy->sc_dk.dk_label->d_npartitions || 1095 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1096 return (ENXIO); 1097 } 1098 /* set open masks */ 1099 1100 switch (fmt) { 1101 case S_IFCHR: 1102 xy->sc_dk.dk_copenmask |= (1 << part); 1103 break; 1104 case S_IFBLK: 1105 xy->sc_dk.dk_bopenmask |= (1 << part); 1106 break; 1107 } 1108 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1109 1110 return 0; 1111 } 1112 1113 int 1114 xyread(dev_t dev, struct uio *uio, int flags) 1115 { 1116 1117 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1118 } 1119 1120 int 1121 xywrite(dev_t dev, struct uio *uio, int flags) 1122 { 1123 1124 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1125 } 1126 1127 1128 /* 1129 * xysize: return size of a partition for a dump 1130 */ 1131 1132 int 1133 xysize(dev_t dev) 1134 { 1135 struct xy_softc *xysc; 1136 int unit, part, size, omask; 1137 1138 /* valid unit? */ 1139 unit = DISKUNIT(dev); 1140 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1141 return (-1); 1142 1143 part = DISKPART(dev); 1144 omask = xysc->sc_dk.dk_openmask & (1 << part); 1145 1146 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1147 return (-1); 1148 1149 /* do it */ 1150 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1151 size = -1; /* only give valid size for swap partitions */ 1152 else 1153 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1154 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1155 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1156 return (-1); 1157 return (size); 1158 } 1159 1160 /* 1161 * xystrategy: buffering system interface to xy. 1162 */ 1163 1164 void 1165 xystrategy(struct buf *bp) 1166 { 1167 struct xy_softc *xy; 1168 int s, unit; 1169 struct xyc_attach_args xa; 1170 struct disklabel *lp; 1171 daddr_t blkno; 1172 1173 unit = DISKUNIT(bp->b_dev); 1174 1175 /* check for live device */ 1176 1177 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1178 bp->b_blkno < 0 || 1179 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1180 bp->b_error = EINVAL; 1181 goto done; 1182 } 1183 /* do we need to attach the drive? */ 1184 1185 if (xy->state == XY_DRIVE_UNKNOWN) { 1186 xa.driveno = xy->xy_drive; 1187 xa.fullmode = XY_SUB_WAIT; 1188 xa.booting = 0; 1189 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1190 if (xy->state == XY_DRIVE_UNKNOWN) { 1191 bp->b_error = EIO; 1192 goto done; 1193 } 1194 } 1195 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1196 /* no I/O to unlabeled disks, unless raw partition */ 1197 bp->b_error = EIO; 1198 goto done; 1199 } 1200 /* short circuit zero length request */ 1201 1202 if (bp->b_bcount == 0) 1203 goto done; 1204 1205 /* check bounds with label (disksubr.c). Determine the size of the 1206 * transfer, and make sure it is within the boundaries of the 1207 * partition. Adjust transfer if needed, and signal errors or early 1208 * completion. */ 1209 1210 lp = xy->sc_dk.dk_label; 1211 1212 if (bounds_check_with_label(&xy->sc_dk, bp, 1213 (xy->flags & XY_WLABEL) != 0) <= 0) 1214 goto done; 1215 1216 /* 1217 * Now convert the block number to absolute and put it in 1218 * terms of the device's logical block size. 1219 */ 1220 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1221 if (DISKPART(bp->b_dev) != RAW_PART) 1222 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1223 1224 bp->b_rawblkno = blkno; 1225 1226 /* 1227 * now we know we have a valid buf structure that we need to do I/O 1228 * on. 1229 */ 1230 s = splbio(); /* protect the queues */ 1231 1232 bufq_put(xy->xyq, bp); 1233 1234 /* start 'em up */ 1235 1236 xyc_start(xy->parent, NULL); 1237 1238 /* done! */ 1239 1240 splx(s); 1241 return; 1242 1243 done: /* tells upper layers we are done with this 1244 * buf */ 1245 bp->b_resid = bp->b_bcount; 1246 biodone(bp); 1247 } 1248 /* 1249 * end of {b,c}devsw functions 1250 */ 1251 1252 /* 1253 * i n t e r r u p t f u n c t i o n 1254 * 1255 * xycintr: hardware interrupt. 1256 */ 1257 int 1258 xycintr(void *v) 1259 { 1260 struct xyc_softc *xycsc = v; 1261 1262 /* kick the event counter */ 1263 1264 xycsc->sc_intrcnt.ev_count++; 1265 1266 /* remove as many done IOPBs as possible */ 1267 1268 xyc_remove_iorq(xycsc); 1269 1270 /* start any iorq's already waiting */ 1271 1272 xyc_start(xycsc, NULL); 1273 1274 return (1); 1275 } 1276 /* 1277 * end of interrupt function 1278 */ 1279 1280 /* 1281 * i n t e r n a l f u n c t i o n s 1282 */ 1283 1284 /* 1285 * xyc_rqinit: fill out the fields of an I/O request 1286 */ 1287 1288 inline void 1289 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) 1290 { 1291 rq->xyc = xyc; 1292 rq->xy = xy; 1293 rq->ttl = XYC_MAXTTL + 10; 1294 rq->mode = md; 1295 rq->tries = rq->errnum = rq->lasterror = 0; 1296 rq->blockno = blk; 1297 rq->sectcnt = cnt; 1298 rq->dbuf = db; 1299 rq->buf = bp; 1300 } 1301 1302 /* 1303 * xyc_rqtopb: load up an IOPB based on an iorq 1304 */ 1305 1306 void 1307 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1308 { 1309 u_long block, dp; 1310 1311 /* normal IOPB case, standard stuff */ 1312 1313 /* chain bit handled later */ 1314 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1315 iopb->com = cmd; 1316 iopb->errnum = 0; 1317 iopb->errs = 0; 1318 iopb->done = 0; 1319 if (iorq->xy) { 1320 iopb->unit = iorq->xy->xy_drive; 1321 iopb->dt = iorq->xy->drive_type; 1322 } else { 1323 iopb->unit = 0; 1324 iopb->dt = 0; 1325 } 1326 block = iorq->blockno; 1327 if (iorq->xy == NULL || block == 0) { 1328 iopb->sect = iopb->head = iopb->cyl = 0; 1329 } else { 1330 iopb->sect = block % iorq->xy->nsect; 1331 block = block / iorq->xy->nsect; 1332 iopb->head = block % iorq->xy->nhead; 1333 block = block / iorq->xy->nhead; 1334 iopb->cyl = block; 1335 } 1336 iopb->scnt = iorq->sectcnt; 1337 dp = (u_long) iorq->dbuf; 1338 if (iorq->dbuf == NULL) { 1339 iopb->dataa = 0; 1340 iopb->datar = 0; 1341 } else { 1342 iopb->dataa = (dp & 0xffff); 1343 iopb->datar = ((dp & 0xff0000) >> 16); 1344 } 1345 iopb->subfn = subfun; 1346 } 1347 1348 1349 /* 1350 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1351 */ 1352 1353 int 1354 xyc_unbusy(struct xyc *xyc, int del) 1355 { 1356 while (del-- > 0) { 1357 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1358 break; 1359 DELAY(1); 1360 } 1361 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1362 } 1363 1364 /* 1365 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1366 * note that NORM requests are handled separately. 1367 */ 1368 int 1369 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1370 int scnt, char *dptr, int fullmode) 1371 { 1372 int submode = XY_STATE(fullmode); 1373 struct xy_iorq *iorq = xycsc->ciorq; 1374 struct xy_iopb *iopb = xycsc->ciopb; 1375 1376 /* 1377 * is someone else using the control iopq wait for it if we can 1378 */ 1379 start: 1380 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1381 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1382 return(XY_ERR_FAIL); 1383 goto start; 1384 } 1385 1386 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1387 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1388 iorq->mode = XY_SUB_FREE; 1389 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1390 } 1391 1392 /* init iorq/iopb */ 1393 1394 xyc_rqinit(iorq, xycsc, 1395 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1396 fullmode, block, scnt, dptr, NULL); 1397 1398 /* load IOPB from iorq */ 1399 1400 xyc_rqtopb(iorq, iopb, cmd, subfn); 1401 1402 /* submit it for processing */ 1403 1404 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1405 1406 return(XY_ERR_AOK); 1407 } 1408 1409 /* 1410 * xyc_startbuf 1411 * start a buffer for running 1412 */ 1413 1414 int 1415 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1416 { 1417 #ifdef XYC_DEBUG 1418 int partno; 1419 #endif 1420 int error; 1421 struct xy_iorq *iorq; 1422 struct xy_iopb *iopb; 1423 u_long block; 1424 1425 iorq = xysc->xyrq; 1426 iopb = iorq->iopb; 1427 1428 /* get buf */ 1429 1430 if (bp == NULL) 1431 panic("xyc_startbuf null buf"); 1432 1433 #ifdef XYC_DEBUG 1434 partno = DISKPART(bp->b_dev); 1435 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1436 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1437 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1438 bp->b_bcount, bp->b_data); 1439 #endif 1440 1441 /* 1442 * load request. 1443 * 1444 * note that iorq points to the buffer as mapped into DVMA space, 1445 * where as the bp->b_data points to its non-DVMA mapping. 1446 */ 1447 1448 block = bp->b_rawblkno; 1449 1450 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1451 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1452 if (error != 0) { 1453 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1454 return (XY_ERR_FAIL); /* XXX: need some sort of 1455 * call-back scheme here? */ 1456 } 1457 1458 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1459 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1460 ? BUS_DMASYNC_PREREAD 1461 : BUS_DMASYNC_PREWRITE); 1462 1463 /* init iorq and load iopb from it */ 1464 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1465 bp->b_bcount / XYFM_BPS, 1466 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1467 bp); 1468 1469 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1470 1471 /* Instrumentation. */ 1472 disk_busy(&xysc->sc_dk); 1473 1474 return (XY_ERR_AOK); 1475 } 1476 1477 1478 /* 1479 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1480 * if ok. if it fail returns an error code. type is XY_SUB_*. 1481 * 1482 * note: caller frees iorq in all cases except NORM 1483 * 1484 * return value: 1485 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1486 * WAIT: XY_AOK (success), <error-code> (failed) 1487 * POLL: <same as WAIT> 1488 * NOQ : <same as NORM> 1489 * 1490 * there are three sources for i/o requests: 1491 * [1] xystrategy: normal block I/O, using "struct buf" system. 1492 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1493 * [3] open/ioctl: these are I/O requests done in the context of a process, 1494 * and the process should block until they are done. 1495 * 1496 * software state is stored in the iorq structure. each iorq has an 1497 * iopb structure. the hardware understands the iopb structure. 1498 * every command must go through an iopb. a 450 handles one iopb at a 1499 * time, where as a 451 can take them in chains. [the 450 claims it 1500 * can handle chains, but is appears to be buggy...] iopb are allocated 1501 * in DVMA space at boot up time. each disk gets one iopb, and the 1502 * controller gets one (for POLL and WAIT commands). what happens if 1503 * the iopb is busy? for i/o type [1], the buffers are queued at the 1504 * "buff" layer and * picked up later by the interrupt routine. for case 1505 * [2] we can only be blocked if there is a WAIT type I/O request being 1506 * run. since this can only happen when we are crashing, we wait a sec 1507 * and then steal the IOPB. for case [3] the process can sleep 1508 * on the iorq free list until some iopbs are available. 1509 */ 1510 1511 1512 int 1513 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1514 { 1515 struct xy_iopb *dmaiopb; 1516 1517 #ifdef XYC_DEBUG 1518 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1519 device_xname(xycsc->sc_dev), iorq, type); 1520 #endif 1521 1522 /* first check and see if controller is busy */ 1523 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1524 #ifdef XYC_DEBUG 1525 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1526 #endif 1527 if (type == XY_SUB_NOQ) 1528 return (XY_ERR_FAIL); /* failed */ 1529 switch (type) { 1530 case XY_SUB_NORM: 1531 return XY_ERR_AOK; /* success */ 1532 case XY_SUB_WAIT: 1533 while (iorq->iopb->done == 0) { 1534 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1535 } 1536 return (iorq->errnum); 1537 case XY_SUB_POLL: /* steal controller */ 1538 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1539 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1540 panic("xyc_submit_iorq: stuck xyc"); 1541 printf("%s: stole controller\n", 1542 device_xname(xycsc->sc_dev)); 1543 break; 1544 default: 1545 panic("xyc_submit_iorq adding"); 1546 } 1547 } 1548 1549 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1550 if (dmaiopb == NULL) { /* nothing doing? */ 1551 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1552 return(XY_ERR_AOK); 1553 panic("xyc_submit_iorq: xyc_chain failed!"); 1554 } 1555 1556 XYC_GO(xycsc->xyc, dmaiopb); 1557 1558 /* command now running, wrap it up */ 1559 switch (type) { 1560 case XY_SUB_NORM: 1561 case XY_SUB_NOQ: 1562 return (XY_ERR_AOK); /* success */ 1563 case XY_SUB_WAIT: 1564 while (iorq->iopb->done == 0) { 1565 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1566 } 1567 return (iorq->errnum); 1568 case XY_SUB_POLL: 1569 return (xyc_piodriver(xycsc, iorq)); 1570 default: 1571 panic("xyc_submit_iorq wrap up"); 1572 } 1573 panic("xyc_submit_iorq"); 1574 return 0; /* not reached */ 1575 } 1576 1577 1578 /* 1579 * xyc_chain: build a chain. return dvma address of first element in 1580 * the chain. iorq != NULL: means we only want that item on the chain. 1581 */ 1582 1583 struct xy_iopb * 1584 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1585 { 1586 int togo, chain, hand; 1587 1588 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1589 1590 /* 1591 * promote control IOPB to the top 1592 */ 1593 if (iorq == NULL) { 1594 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1595 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1596 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1597 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1598 } 1599 1600 /* 1601 * special case: if iorq != NULL then we have a POLL or WAIT request. 1602 * we let these take priority and do them first. 1603 */ 1604 if (iorq) { 1605 xycsc->xy_chain[0] = iorq; 1606 iorq->iopb->chen = 0; 1607 return(iorq->dmaiopb); 1608 } 1609 1610 /* 1611 * NORM case: do round robin and maybe chain (if allowed and possible) 1612 */ 1613 chain = 0; 1614 hand = xycsc->xy_hand; 1615 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1616 1617 for (togo = XYC_MAXIOPB; togo > 0; 1618 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1619 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1620 1621 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1622 xycsc->iopbase[hand].done) 1623 continue; /* not ready-for-i/o */ 1624 1625 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1626 iopb = xycsc->xy_chain[chain]->iopb; 1627 iopb->chen = 0; 1628 if (chain != 0) { 1629 /* adding a link to a chain */ 1630 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1631 prev_iopb->chen = 1; 1632 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1633 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1634 } else { 1635 /* head of chain */ 1636 iorq = xycsc->xy_chain[chain]; 1637 } 1638 chain++; 1639 1640 /* quit if chaining dis-allowed */ 1641 if (xycsc->no_ols) 1642 break; 1643 } 1644 1645 return(iorq ? iorq->dmaiopb : NULL); 1646 } 1647 1648 /* 1649 * xyc_piodriver 1650 * 1651 * programmed i/o driver. this function takes over the computer 1652 * and drains off the polled i/o request. it returns the status of the iorq 1653 * the caller is interesting in. 1654 */ 1655 int 1656 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1657 { 1658 int nreset = 0; 1659 int retval = 0; 1660 u_long res; 1661 #ifdef XYC_DEBUG 1662 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1663 #endif 1664 1665 while (iorq->iopb->done == 0) { 1666 1667 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1668 1669 /* we expect some progress soon */ 1670 if (res == XY_ERR_FAIL && nreset >= 2) { 1671 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1672 #ifdef XYC_DEBUG 1673 printf("xyc_piodriver: timeout\n"); 1674 #endif 1675 return (XY_ERR_FAIL); 1676 } 1677 if (res == XY_ERR_FAIL) { 1678 if (xyc_reset(xycsc, 0, 1679 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1680 XY_ERR_FAIL, 1681 0) == XY_ERR_FAIL) 1682 return (XY_ERR_FAIL); /* flushes all but POLL 1683 * requests, resets */ 1684 continue; 1685 } 1686 1687 xyc_remove_iorq(xycsc); /* may resubmit request */ 1688 1689 if (iorq->iopb->done == 0) 1690 xyc_start(xycsc, iorq); 1691 } 1692 1693 /* get return value */ 1694 1695 retval = iorq->errnum; 1696 1697 #ifdef XYC_DEBUG 1698 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1699 iorq->errnum, xyc_e2str(iorq->errnum)); 1700 #endif 1701 1702 /* start up any bufs that have queued */ 1703 1704 xyc_start(xycsc, NULL); 1705 1706 return (retval); 1707 } 1708 1709 /* 1710 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1711 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1712 */ 1713 void 1714 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1715 { 1716 struct xy_iopb tmpiopb; 1717 struct xy_iopb *iopb; 1718 int del; 1719 1720 iopb = xycsc->ciopb; 1721 1722 /* Save contents */ 1723 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1724 1725 iopb->chen = iopb->done = iopb->errs = 0; 1726 iopb->ien = 0; 1727 iopb->com = XYCMD_RST; 1728 iopb->unit = xysc->xy_drive; 1729 1730 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1731 1732 del = XYC_RESETUSEC; 1733 while (del > 0) { 1734 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1735 break; 1736 DELAY(1); 1737 del--; 1738 } 1739 1740 if (del <= 0 || iopb->errs) { 1741 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1742 xyc_e2str(iopb->errnum)); 1743 del = xycsc->xyc->xyc_rsetup; 1744 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1745 panic("xyc_reset"); 1746 } else { 1747 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1748 } 1749 1750 /* Restore contents */ 1751 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1752 } 1753 1754 1755 /* 1756 * xyc_reset: reset everything: requests are marked as errors except 1757 * a polled request (which is resubmitted) 1758 */ 1759 int 1760 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1761 int error, struct xy_softc *xysc) 1762 { 1763 int del = 0, lcv, retval = XY_ERR_AOK; 1764 1765 /* soft reset hardware */ 1766 1767 if (!quiet) 1768 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1769 del = xycsc->xyc->xyc_rsetup; 1770 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1771 if (del == XY_ERR_FAIL) { 1772 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1773 retval = XY_ERR_FAIL; 1774 } 1775 if (xysc) 1776 xyc_xyreset(xycsc, xysc); 1777 1778 /* fix queues based on "blast-mode" */ 1779 1780 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1781 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1782 1783 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1784 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1785 XY_STATE(iorq->mode) != XY_SUB_NORM) 1786 /* is it active? */ 1787 continue; 1788 1789 if (blastmode == XY_RSET_ALL || 1790 blastmode != iorq) { 1791 /* failed */ 1792 iorq->errnum = error; 1793 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1794 switch (XY_STATE(iorq->mode)) { 1795 case XY_SUB_NORM: 1796 iorq->buf->b_error = EIO; 1797 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1798 1799 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1800 iorq->dmamap->dm_mapsize, 1801 (iorq->buf->b_flags & B_READ) 1802 ? BUS_DMASYNC_POSTREAD 1803 : BUS_DMASYNC_POSTWRITE); 1804 1805 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1806 1807 (void)bufq_get(iorq->xy->xyq); 1808 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1809 (xycsc->reqs[lcv].buf->b_bcount - 1810 xycsc->reqs[lcv].buf->b_resid), 1811 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1812 biodone(iorq->buf); 1813 iorq->mode = XY_SUB_FREE; 1814 break; 1815 case XY_SUB_WAIT: 1816 wakeup(iorq); 1817 case XY_SUB_POLL: 1818 iorq->mode = 1819 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1820 break; 1821 } 1822 1823 } else { 1824 1825 /* resubmit, no need to do anything here */ 1826 } 1827 } 1828 1829 /* 1830 * now, if stuff is waiting, start it. 1831 * since we just reset it should go 1832 */ 1833 xyc_start(xycsc, NULL); 1834 1835 return (retval); 1836 } 1837 1838 /* 1839 * xyc_start: start waiting buffers 1840 */ 1841 1842 void 1843 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1844 { 1845 int lcv; 1846 struct xy_softc *xy; 1847 1848 if (iorq == NULL) { 1849 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1850 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1851 if (bufq_peek(xy->xyq) == NULL) continue; 1852 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1853 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1854 } 1855 } 1856 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1857 } 1858 1859 /* 1860 * xyc_remove_iorq: remove "done" IOPB's. 1861 */ 1862 1863 int 1864 xyc_remove_iorq(struct xyc_softc *xycsc) 1865 { 1866 int errnum, rq, comm, errs; 1867 struct xyc *xyc = xycsc->xyc; 1868 u_long addr; 1869 struct xy_iopb *iopb; 1870 struct xy_iorq *iorq; 1871 struct buf *bp; 1872 1873 if (xyc->xyc_csr & XYC_DERR) { 1874 /* 1875 * DOUBLE ERROR: should never happen under normal use. This 1876 * error is so bad, you can't even tell which IOPB is bad, so 1877 * we dump them all. 1878 */ 1879 errnum = XY_ERR_DERR; 1880 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1881 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1882 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1883 panic("xyc_remove_iorq: controller DEAD"); 1884 } 1885 return (XY_ERR_AOK); 1886 } 1887 1888 /* 1889 * get iopb that is done, loop down the chain 1890 */ 1891 1892 if (xyc->xyc_csr & XYC_ERR) { 1893 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1894 } 1895 if (xyc->xyc_csr & XYC_IPND) { 1896 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1897 } 1898 1899 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1900 iorq = xycsc->xy_chain[rq]; 1901 if (iorq == NULL) break; /* done ! */ 1902 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1903 continue; /* free, or done */ 1904 iopb = iorq->iopb; 1905 if (iopb->done == 0) 1906 continue; /* not done yet */ 1907 1908 comm = iopb->com; 1909 errs = iopb->errs; 1910 1911 if (errs) 1912 iorq->errnum = iopb->errnum; 1913 else 1914 iorq->errnum = 0; 1915 1916 /* handle non-fatal errors */ 1917 1918 if (errs && 1919 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1920 continue; /* AOK: we resubmitted it */ 1921 1922 1923 /* this iorq is now done (hasn't been restarted or anything) */ 1924 1925 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1926 xyc_perror(iorq, iopb, 0); 1927 1928 /* now, if read/write check to make sure we got all the data 1929 * we needed. (this may not be the case if we got an error in 1930 * the middle of a multisector request). */ 1931 1932 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1933 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1934 /* we just successfully processed a bad144 sector 1935 * note: if we are in bad 144 mode, the pointers have 1936 * been advanced already (see above) and are pointing 1937 * at the bad144 sector. to exit bad144 mode, we 1938 * must advance the pointers 1 sector and issue a new 1939 * request if there are still sectors left to process 1940 * 1941 */ 1942 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1943 1944 /* exit b144 mode */ 1945 iorq->mode = iorq->mode & (~XY_MODE_B144); 1946 1947 if (iorq->sectcnt) { /* more to go! */ 1948 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1949 iopb->errs = iopb->done = 0; 1950 iorq->tries = 0; 1951 iopb->scnt = iorq->sectcnt; 1952 iopb->cyl = iorq->blockno / 1953 iorq->xy->sectpercyl; 1954 iopb->head = 1955 (iorq->blockno / iorq->xy->nhead) % 1956 iorq->xy->nhead; 1957 iopb->sect = iorq->blockno % XYFM_BPS; 1958 addr = (u_long) iorq->dbuf; 1959 iopb->dataa = (addr & 0xffff); 1960 iopb->datar = ((addr & 0xff0000) >> 16); 1961 /* will resubit at end */ 1962 continue; 1963 } 1964 } 1965 /* final cleanup, totally done with this request */ 1966 1967 switch (XY_STATE(iorq->mode)) { 1968 case XY_SUB_NORM: 1969 bp = iorq->buf; 1970 if (errs) { 1971 bp->b_error = EIO; 1972 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1973 } else { 1974 bp->b_resid = 0; /* done */ 1975 } 1976 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1977 iorq->dmamap->dm_mapsize, 1978 (iorq->buf->b_flags & B_READ) 1979 ? BUS_DMASYNC_POSTREAD 1980 : BUS_DMASYNC_POSTWRITE); 1981 1982 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1983 1984 (void)bufq_get(iorq->xy->xyq); 1985 disk_unbusy(&iorq->xy->sc_dk, 1986 (bp->b_bcount - bp->b_resid), 1987 (bp->b_flags & B_READ)); 1988 iorq->mode = XY_SUB_FREE; 1989 biodone(bp); 1990 break; 1991 case XY_SUB_WAIT: 1992 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1993 wakeup(iorq); 1994 break; 1995 case XY_SUB_POLL: 1996 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1997 break; 1998 } 1999 } 2000 2001 return (XY_ERR_AOK); 2002 } 2003 2004 /* 2005 * xyc_perror: print error. 2006 * - if still_trying is true: we got an error, retried and got a 2007 * different error. in that case lasterror is the old error, 2008 * and errnum is the new one. 2009 * - if still_trying is not true, then if we ever had an error it 2010 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2011 * from that error (otherwise iorq->errnum == iorq->lasterror). 2012 */ 2013 void 2014 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 2015 { 2016 2017 int error = iorq->lasterror; 2018 2019 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2020 : device_xname(iorq->xyc->sc_dev)); 2021 if (iorq->buf) 2022 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2023 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2024 printf("%s %d/%d/%d: ", 2025 (iopb->com == XYCMD_RD) ? "read" : "write", 2026 iopb->cyl, iopb->head, iopb->sect); 2027 printf("%s", xyc_e2str(error)); 2028 2029 if (still_trying) 2030 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2031 else 2032 if (iorq->errnum == 0) 2033 printf(" [recovered in %d tries]", iorq->tries); 2034 2035 printf("\n"); 2036 } 2037 2038 /* 2039 * xyc_error: non-fatal error encountered... recover. 2040 * return AOK if resubmitted, return FAIL if this iopb is done 2041 */ 2042 int 2043 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2044 int comm) 2045 { 2046 int errnum = iorq->errnum; 2047 int erract = xyc_entoact(errnum); 2048 int oldmode, advance; 2049 #ifdef __sparc__ 2050 int i; 2051 #endif 2052 2053 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2054 oldmode = iorq->mode; 2055 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2056 /* make xyc_start ignore us */ 2057 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2058 iorq->mode = oldmode; 2059 } 2060 /* check for read/write to a sector in bad144 table if bad: redirect 2061 * request to bad144 area */ 2062 2063 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2064 (iorq->mode & XY_MODE_B144) == 0) { 2065 advance = iorq->sectcnt - iopb->scnt; 2066 XYC_ADVANCE(iorq, advance); 2067 #ifdef __sparc__ 2068 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2069 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2070 iorq->blockno % iorq->xy->nsect)) != -1) { 2071 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2072 * redirect */ 2073 iopb->errnum = iopb->done = iopb->errs = 0; 2074 iopb->scnt = 1; 2075 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2076 /* second to last acyl */ 2077 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2078 * standard */ 2079 iopb->head = i / iorq->xy->nhead; 2080 iopb->sect = i % iorq->xy->nhead; 2081 /* will resubmit when we come out of remove_iorq */ 2082 return (XY_ERR_AOK); /* recovered! */ 2083 } 2084 #endif 2085 } 2086 2087 /* 2088 * it isn't a bad144 sector, must be real error! see if we can retry 2089 * it? 2090 */ 2091 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2092 xyc_perror(iorq, iopb, 1); /* inform of error state 2093 * change */ 2094 iorq->lasterror = errnum; 2095 2096 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2097 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2098 iorq->tries++; 2099 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2100 /* will resubmit at end of remove_iorq */ 2101 return (XY_ERR_AOK); /* recovered! */ 2102 } 2103 2104 /* failed to recover from this error */ 2105 return (XY_ERR_FAIL); 2106 } 2107 2108 /* 2109 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2110 */ 2111 void 2112 xyc_tick(void *arg) 2113 { 2114 struct xyc_softc *xycsc = arg; 2115 int lcv, s, reset = 0; 2116 2117 /* reduce ttl for each request if one goes to zero, reset xyc */ 2118 s = splbio(); 2119 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2120 if (xycsc->reqs[lcv].mode == 0 || 2121 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2122 continue; 2123 xycsc->reqs[lcv].ttl--; 2124 if (xycsc->reqs[lcv].ttl == 0) 2125 reset = 1; 2126 } 2127 if (reset) { 2128 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2129 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2130 } 2131 splx(s); 2132 2133 /* until next time */ 2134 2135 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2136 } 2137 2138 /* 2139 * xyc_ioctlcmd: this function provides a user level interface to the 2140 * controller via ioctl. this allows "format" programs to be written 2141 * in user code, and is also useful for some debugging. we return 2142 * an error code. called at user priority. 2143 * 2144 * XXX missing a few commands (see the 7053 driver for ideas) 2145 */ 2146 int 2147 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2148 { 2149 int s, rqno, dummy = 0; 2150 char *dvmabuf = NULL, *buf = NULL; 2151 struct xyc_softc *xycsc; 2152 int rseg, error; 2153 bus_dma_segment_t seg; 2154 2155 /* check sanity of requested command */ 2156 2157 switch (xio->cmd) { 2158 2159 case XYCMD_NOP: /* no op: everything should be zero */ 2160 if (xio->subfn || xio->dptr || xio->dlen || 2161 xio->block || xio->sectcnt) 2162 return (EINVAL); 2163 break; 2164 2165 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2166 case XYCMD_WR: 2167 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2168 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2169 return (EINVAL); 2170 break; 2171 2172 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2173 return (EINVAL); 2174 2175 break; 2176 2177 default: 2178 return (EINVAL);/* ??? */ 2179 } 2180 2181 xycsc = xy->parent; 2182 2183 /* create DVMA buffer for request if needed */ 2184 if (xio->dlen) { 2185 bus_addr_t busbuf; 2186 2187 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2188 &seg, &rseg, 2189 xio->dlen, (void **)&buf, 2190 &busbuf)) != 0) { 2191 return (error); 2192 } 2193 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2194 2195 if (xio->cmd == XYCMD_WR) { 2196 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2197 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2198 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2199 return (error); 2200 } 2201 } 2202 } 2203 /* do it! */ 2204 2205 error = 0; 2206 s = splbio(); 2207 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2208 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2209 if (rqno == XY_ERR_FAIL) { 2210 error = EIO; 2211 goto done; 2212 } 2213 xio->errnum = xycsc->ciorq->errnum; 2214 xio->tries = xycsc->ciorq->tries; 2215 XYC_DONE(xycsc, dummy); 2216 2217 if (xio->cmd == XYCMD_RD) 2218 error = copyout(buf, xio->dptr, xio->dlen); 2219 2220 done: 2221 splx(s); 2222 if (dvmabuf) { 2223 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2224 xio->dlen, buf); 2225 } 2226 return (error); 2227 } 2228 2229 /* 2230 * xyc_e2str: convert error code number into an error string 2231 */ 2232 const char * 2233 xyc_e2str(int no) 2234 { 2235 switch (no) { 2236 case XY_ERR_FAIL: 2237 return ("Software fatal error"); 2238 case XY_ERR_DERR: 2239 return ("DOUBLE ERROR"); 2240 case XY_ERR_AOK: 2241 return ("Successful completion"); 2242 case XY_ERR_IPEN: 2243 return("Interrupt pending"); 2244 case XY_ERR_BCFL: 2245 return("Busy conflict"); 2246 case XY_ERR_TIMO: 2247 return("Operation timeout"); 2248 case XY_ERR_NHDR: 2249 return("Header not found"); 2250 case XY_ERR_HARD: 2251 return("Hard ECC error"); 2252 case XY_ERR_ICYL: 2253 return("Illegal cylinder address"); 2254 case XY_ERR_ISEC: 2255 return("Illegal sector address"); 2256 case XY_ERR_SMAL: 2257 return("Last sector too small"); 2258 case XY_ERR_SACK: 2259 return("Slave ACK error (non-existent memory)"); 2260 case XY_ERR_CHER: 2261 return("Cylinder and head/header error"); 2262 case XY_ERR_SRTR: 2263 return("Auto-seek retry successful"); 2264 case XY_ERR_WPRO: 2265 return("Write-protect error"); 2266 case XY_ERR_UIMP: 2267 return("Unimplemented command"); 2268 case XY_ERR_DNRY: 2269 return("Drive not ready"); 2270 case XY_ERR_SZER: 2271 return("Sector count zero"); 2272 case XY_ERR_DFLT: 2273 return("Drive faulted"); 2274 case XY_ERR_ISSZ: 2275 return("Illegal sector size"); 2276 case XY_ERR_SLTA: 2277 return("Self test A"); 2278 case XY_ERR_SLTB: 2279 return("Self test B"); 2280 case XY_ERR_SLTC: 2281 return("Self test C"); 2282 case XY_ERR_SOFT: 2283 return("Soft ECC error"); 2284 case XY_ERR_SFOK: 2285 return("Soft ECC error recovered"); 2286 case XY_ERR_IHED: 2287 return("Illegal head"); 2288 case XY_ERR_DSEQ: 2289 return("Disk sequencer error"); 2290 case XY_ERR_SEEK: 2291 return("Seek error"); 2292 default: 2293 return ("Unknown error"); 2294 } 2295 } 2296 2297 int 2298 xyc_entoact(int errnum) 2299 { 2300 switch (errnum) { 2301 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2302 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2303 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2304 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2305 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2306 2307 return(XY_ERA_PROG); /* program error ! */ 2308 2309 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2310 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2311 case XY_ERR_SOFT: 2312 2313 return(XY_ERA_HARD); /* hard error, retry */ 2314 2315 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2316 2317 return(XY_ERA_RSET); /* hard error reset */ 2318 2319 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2320 2321 return(XY_ERA_SOFT); /* an FYI error */ 2322 2323 case XY_ERR_WPRO: 2324 2325 return(XY_ERA_WPRO); /* write protect */ 2326 } 2327 2328 return(XY_ERA_PROG); /* ??? */ 2329 } 2330
Indexes created Tue Sep 30 20:09:53 GMT 2025