xy.c revision 1.42
1 /* $NetBSD: xy.c,v 1.42 2002/09/27 15:37:39 provos Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.42 2002/09/27 15:37:39 provos Exp $"); 55 56 #undef XYC_DEBUG /* full debug */ 57 #undef XYC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 59 #define XYC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/dkbad.h> 77 #include <sys/conf.h> 78 79 #include <machine/bus.h> 80 #include <machine/intr.h> 81 82 #if defined(__sparc__) || defined(sun3) 83 #include <dev/sun/disklabel.h> 84 #endif 85 86 #include <dev/vme/vmereg.h> 87 #include <dev/vme/vmevar.h> 88 89 #include <dev/vme/xyreg.h> 90 #include <dev/vme/xyvar.h> 91 #include <dev/vme/xio.h> 92 93 #include "locators.h" 94 95 /* 96 * macros 97 */ 98 99 /* 100 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 101 */ 102 #define XYC_GO(XYC, ADDR) { \ 103 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 104 (ADDR) = ((ADDR) >> 8); \ 105 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 106 (ADDR) = ((ADDR) >> 8); \ 107 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 108 (ADDR) = ((ADDR) >> 8); \ 109 (XYC)->xyc_reloc_hi = (ADDR); \ 110 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 111 } 112 113 /* 114 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 115 */ 116 117 #define XYC_DONE(SC,ER) { \ 118 if ((ER) == XY_ERR_AOK) { \ 119 (ER) = (SC)->ciorq->errno; \ 120 (SC)->ciorq->mode = XY_SUB_FREE; \ 121 wakeup((SC)->ciorq); \ 122 } \ 123 } 124 125 /* 126 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 127 */ 128 129 #define XYC_ADVANCE(IORQ, N) { \ 130 if (N) { \ 131 (IORQ)->sectcnt -= (N); \ 132 (IORQ)->blockno += (N); \ 133 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 134 } \ 135 } 136 137 /* 138 * note - addresses you can sleep on: 139 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 140 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 141 */ 142 143 144 /* 145 * function prototypes 146 * "xyc_*" functions are internal, all others are external interfaces 147 */ 148 149 extern int pil_to_vme[]; /* from obio.c */ 150 151 /* internals */ 152 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 153 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 154 char *xyc_e2str __P((int)); 155 int xyc_entoact __P((int)); 156 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 157 struct xy_iopb *, int)); 158 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 159 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 160 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 161 int xyc_remove_iorq __P((struct xyc_softc *)); 162 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 163 struct xy_softc *)); 164 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 165 struct xy_softc *, int, u_long, int, 166 caddr_t, struct buf *)); 167 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 168 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 169 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 170 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 171 void xyc_tick __P((void *)); 172 int xyc_unbusy __P((struct xyc *, int)); 173 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 174 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 175 int *, bus_size_t, caddr_t *, bus_addr_t *); 176 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 177 int, bus_size_t, caddr_t); 178 179 /* machine interrupt hook */ 180 int xycintr __P((void *)); 181 182 /* autoconf */ 183 int xycmatch __P((struct device *, struct cfdata *, void *)); 184 void xycattach __P((struct device *, struct device *, void *)); 185 int xymatch __P((struct device *, struct cfdata *, void *)); 186 void xyattach __P((struct device *, struct device *, void *)); 187 static int xyc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 188 189 static void xydummystrat __P((struct buf *)); 190 int xygetdisklabel __P((struct xy_softc *, void *)); 191 192 /* 193 * cfattach's: device driver interface to autoconfig 194 */ 195 196 struct cfattach xyc_ca = { 197 sizeof(struct xyc_softc), xycmatch, xycattach 198 }; 199 200 struct cfattach xy_ca = { 201 sizeof(struct xy_softc), xymatch, xyattach 202 }; 203 204 extern struct cfdriver xy_cd; 205 206 dev_type_open(xyopen); 207 dev_type_close(xyclose); 208 dev_type_read(xyread); 209 dev_type_write(xywrite); 210 dev_type_ioctl(xyioctl); 211 dev_type_strategy(xystrategy); 212 dev_type_dump(xydump); 213 dev_type_size(xysize); 214 215 const struct bdevsw xy_bdevsw = { 216 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 217 }; 218 219 const struct cdevsw xy_cdevsw = { 220 xyopen, xyclose, xyread, xywrite, xyioctl, 221 nostop, notty, nopoll, nommap, D_DISK 222 }; 223 224 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 225 int driveno; /* unit number */ 226 int fullmode; /* submit mode */ 227 int booting; /* are we booting or not? */ 228 }; 229 230 /* 231 * dkdriver 232 */ 233 234 struct dkdriver xydkdriver = { xystrategy }; 235 236 /* 237 * start: disk label fix code (XXX) 238 */ 239 240 static void *xy_labeldata; 241 242 static void 243 xydummystrat(bp) 244 struct buf *bp; 245 { 246 if (bp->b_bcount != XYFM_BPS) 247 panic("xydummystrat"); 248 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 249 bp->b_flags |= B_DONE; 250 bp->b_flags &= ~B_BUSY; 251 } 252 253 int 254 xygetdisklabel(xy, b) 255 struct xy_softc *xy; 256 void *b; 257 { 258 char *err; 259 #if defined(__sparc__) || defined(sun3) 260 struct sun_disklabel *sdl; 261 #endif 262 263 /* We already have the label data in `b'; setup for dummy strategy */ 264 xy_labeldata = b; 265 266 /* Required parameter for readdisklabel() */ 267 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 268 269 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 270 xydummystrat, 271 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 272 if (err) { 273 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 274 return(XY_ERR_FAIL); 275 } 276 277 #if defined(__sparc__) || defined(sun3) 278 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 279 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 280 if (sdl->sl_magic == SUN_DKMAGIC) { 281 xy->pcyl = sdl->sl_pcylinders; 282 } else 283 #endif 284 { 285 printf("%s: WARNING: no `pcyl' in disk label.\n", 286 xy->sc_dev.dv_xname); 287 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 288 xy->sc_dk.dk_label->d_acylinders; 289 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 290 xy->sc_dev.dv_xname, xy->pcyl); 291 } 292 293 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 294 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 295 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 296 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 297 xy->sectpercyl = xy->nhead * xy->nsect; 298 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 299 * sun->bsd */ 300 return(XY_ERR_AOK); 301 } 302 303 /* 304 * end: disk label fix code (XXX) 305 */ 306 307 /* 308 * Shorthand for allocating, mapping and loading a DMA buffer 309 */ 310 int 311 xy_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 312 bus_dma_tag_t tag; 313 bus_dmamap_t map; 314 bus_dma_segment_t *seg; 315 int *nsegp; 316 bus_size_t len; 317 caddr_t *kvap; 318 bus_addr_t *dmap; 319 { 320 int nseg; 321 int error; 322 323 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 324 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 325 return (error); 326 } 327 328 if ((error = bus_dmamem_map(tag, seg, nseg, 329 len, kvap, 330 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 331 bus_dmamem_free(tag, seg, nseg); 332 return (error); 333 } 334 335 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 336 BUS_DMA_NOWAIT)) != 0) { 337 bus_dmamem_unmap(tag, *kvap, len); 338 bus_dmamem_free(tag, seg, nseg); 339 return (error); 340 } 341 342 *dmap = map->dm_segs[0].ds_addr; 343 *nsegp = nseg; 344 return (0); 345 } 346 347 void 348 xy_dmamem_free(tag, map, seg, nseg, len, kva) 349 bus_dma_tag_t tag; 350 bus_dmamap_t map; 351 bus_dma_segment_t *seg; 352 int nseg; 353 bus_size_t len; 354 caddr_t kva; 355 { 356 357 bus_dmamap_unload(tag, map); 358 bus_dmamem_unmap(tag, kva, len); 359 bus_dmamem_free(tag, seg, nseg); 360 } 361 362 363 /* 364 * a u t o c o n f i g f u n c t i o n s 365 */ 366 367 /* 368 * xycmatch: determine if xyc is present or not. we do a 369 * soft reset to detect the xyc. 370 */ 371 int 372 xyc_probe(arg, tag, handle) 373 void *arg; 374 bus_space_tag_t tag; 375 bus_space_handle_t handle; 376 { 377 struct xyc *xyc = (void *)handle; /* XXX */ 378 379 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 380 } 381 382 int xycmatch(parent, cf, aux) 383 struct device *parent; 384 struct cfdata *cf; 385 void *aux; 386 { 387 struct vme_attach_args *va = aux; 388 vme_chipset_tag_t ct = va->va_vct; 389 vme_am_t mod; 390 int error; 391 392 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 393 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 394 return (0); 395 396 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 397 mod, VME_D16, xyc_probe, 0); 398 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 399 400 return (error == 0); 401 } 402 403 /* 404 * xycattach: attach controller 405 */ 406 void 407 xycattach(parent, self, aux) 408 struct device *parent, *self; 409 void *aux; 410 411 { 412 struct xyc_softc *xyc = (void *) self; 413 struct vme_attach_args *va = aux; 414 vme_chipset_tag_t ct = va->va_vct; 415 bus_space_tag_t bt; 416 bus_space_handle_t bh; 417 vme_intr_handle_t ih; 418 vme_am_t mod; 419 struct xyc_attach_args xa; 420 int lcv, res, error; 421 bus_dma_segment_t seg; 422 int rseg; 423 vme_mapresc_t resc; 424 425 /* get addressing and intr level stuff from autoconfig and load it 426 * into our xyc_softc. */ 427 428 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 429 430 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 431 panic("xyc: vme alloc"); 432 433 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 434 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 435 panic("xyc: vme_map"); 436 437 xyc->xyc = (struct xyc *) bh; /* XXX */ 438 xyc->ipl = va->ilevel; 439 xyc->vector = va->ivector; 440 xyc->no_ols = 0; /* XXX should be from config */ 441 442 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 443 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 444 445 /* 446 * allocate and zero buffers 447 * check boundaries of the KVA's ... all IOPBs must reside in 448 * the same 64K region. 449 */ 450 451 /* Get DMA handle for misc. transfers */ 452 if ((error = vme_dmamap_create( 453 ct, /* VME chip tag */ 454 MAXPHYS, /* size */ 455 VME_AM_A24, /* address modifier */ 456 VME_D16, /* data size */ 457 0, /* swap */ 458 1, /* nsegments */ 459 MAXPHYS, /* maxsegsz */ 460 0, /* boundary */ 461 BUS_DMA_NOWAIT, 462 &xyc->reqs[lcv].dmamap)) != 0) { 463 464 printf("%s: DMA buffer map create error %d\n", 465 xyc->sc_dev.dv_xname, error); 466 return; 467 } 468 469 /* Get DMA handle for mapping iorq descriptors */ 470 if ((error = vme_dmamap_create( 471 ct, /* VME chip tag */ 472 XYC_MAXIOPB * sizeof(struct xy_iopb), 473 VME_AM_A24, /* address modifier */ 474 VME_D16, /* data size */ 475 0, /* swap */ 476 1, /* nsegments */ 477 XYC_MAXIOPB * sizeof(struct xy_iopb), 478 64*1024, /* boundary */ 479 BUS_DMA_NOWAIT, 480 &xyc->iopmap)) != 0) { 481 482 printf("%s: DMA buffer map create error %d\n", 483 xyc->sc_dev.dv_xname, error); 484 return; 485 } 486 487 /* Get DMA buffer for iorq descriptors */ 488 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 489 XYC_MAXIOPB * sizeof(struct xy_iopb), 490 (caddr_t *)&xyc->iopbase, 491 (bus_addr_t *)&xyc->dvmaiopb)) != 0) { 492 printf("%s: DMA buffer alloc error %d\n", 493 xyc->sc_dev.dv_xname, error); 494 return; 495 } 496 497 bzero(xyc->iopbase, XYC_MAXIOPB * sizeof(struct xy_iopb)); 498 499 xyc->reqs = (struct xy_iorq *) 500 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 501 M_DEVBUF, M_NOWAIT|M_ZERO); 502 if (xyc->reqs == NULL) 503 panic("xyc malloc"); 504 505 /* 506 * init iorq to iopb pointers, and non-zero fields in the 507 * iopb which never change. 508 */ 509 510 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 511 xyc->xy_chain[lcv] = NULL; 512 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 513 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 514 xyc->iopbase[lcv].asr = 1; /* always the same */ 515 xyc->iopbase[lcv].eef = 1; /* always the same */ 516 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 517 xyc->iopbase[lcv].aud = 1; /* always the same */ 518 xyc->iopbase[lcv].relo = 1; /* always the same */ 519 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 520 521 if ((error = vme_dmamap_create( 522 ct, /* VME chip tag */ 523 MAXPHYS, /* size */ 524 VME_AM_A24, /* address modifier */ 525 VME_D16, /* data size */ 526 0, /* swap */ 527 1, /* nsegments */ 528 MAXPHYS, /* maxsegsz */ 529 0, /* boundary */ 530 BUS_DMA_NOWAIT, 531 &xyc->reqs[lcv].dmamap)) != 0) { 532 533 printf("%s: DMA buffer map create error %d\n", 534 xyc->sc_dev.dv_xname, error); 535 return; 536 } 537 } 538 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 539 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 540 xyc->xy_hand = 0; 541 542 /* read controller parameters and insure we have a 450/451 */ 543 544 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 545 res = xyc->ciopb->ctyp; 546 XYC_DONE(xyc, error); 547 if (res != XYCT_450) { 548 if (error) 549 printf(": %s: ", xyc_e2str(error)); 550 printf(": doesn't identify as a 450/451\n"); 551 return; 552 } 553 printf(": Xylogics 450/451"); 554 if (xyc->no_ols) 555 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 556 printf("\n"); 557 if (error) { 558 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 559 xyc_e2str(error)); 560 return; 561 } 562 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 563 printf("%s: 24 bit addressing turned off\n", 564 xyc->sc_dev.dv_xname); 565 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 566 printf("to enable 24 bit mode and this driver\n"); 567 return; 568 } 569 570 /* link in interrupt with higher level software */ 571 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 572 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 573 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 574 xyc->sc_dev.dv_xname, "intr"); 575 576 callout_init(&xyc->sc_tick_ch); 577 578 /* now we must look for disks using autoconfig */ 579 xa.fullmode = XY_SUB_POLL; 580 xa.booting = 1; 581 582 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 583 (void) config_found(self, (void *) &xa, NULL); 584 585 /* start the watchdog clock */ 586 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 587 588 } 589 590 /* 591 * xymatch: probe for disk. 592 * 593 * note: we almost always say disk is present. this allows us to 594 * spin up and configure a disk after the system is booted (we can 595 * call xyattach!). 596 */ 597 int 598 xymatch(parent, cf, aux) 599 struct device *parent; 600 struct cfdata *cf; 601 void *aux; 602 { 603 struct xyc_attach_args *xa = aux; 604 605 /* looking for autoconf wildcard or exact match */ 606 607 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 608 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 609 return 0; 610 611 return 1; 612 613 } 614 615 /* 616 * xyattach: attach a disk. this can be called from autoconf and also 617 * from xyopen/xystrategy. 618 */ 619 void 620 xyattach(parent, self, aux) 621 struct device *parent, *self; 622 void *aux; 623 624 { 625 struct xy_softc *xy = (void *) self, *oxy; 626 struct xyc_softc *xyc = (void *) parent; 627 struct xyc_attach_args *xa = aux; 628 int spt, mb, blk, lcv, fmode, s = 0, newstate; 629 struct dkbad *dkb; 630 int rseg, error; 631 bus_dma_segment_t seg; 632 caddr_t dmaddr; 633 caddr_t buf; 634 635 /* 636 * Always re-initialize the disk structure. We want statistics 637 * to start with a clean slate. 638 */ 639 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 640 xy->sc_dk.dk_driver = &xydkdriver; 641 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 642 643 /* if booting, init the xy_softc */ 644 645 if (xa->booting) { 646 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 647 xy->flags = 0; 648 xy->parent = xyc; 649 650 /* init queue of waiting bufs */ 651 652 bufq_alloc(&xy->xyq, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK); 653 654 xy->xyrq = &xyc->reqs[xa->driveno]; 655 656 } 657 xy->xy_drive = xa->driveno; 658 fmode = xa->fullmode; 659 xyc->sc_drives[xa->driveno] = xy; 660 661 /* if not booting, make sure we are the only process in the attach for 662 * this drive. if locked out, sleep on it. */ 663 664 if (!xa->booting) { 665 s = splbio(); 666 while (xy->state == XY_DRIVE_ATTACHING) { 667 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 668 splx(s); 669 return; 670 } 671 } 672 printf("%s at %s", 673 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 674 } 675 676 /* we now have control */ 677 xy->state = XY_DRIVE_ATTACHING; 678 newstate = XY_DRIVE_UNKNOWN; 679 680 buf = NULL; 681 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 682 XYFM_BPS, 683 (caddr_t *)&buf, 684 (bus_addr_t *)&dmaddr)) != 0) { 685 printf("%s: DMA buffer alloc error %d\n", 686 xyc->sc_dev.dv_xname, error); 687 return; 688 } 689 690 /* first try and reset the drive */ 691 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 692 XYC_DONE(xyc, error); 693 if (error == XY_ERR_DNRY) { 694 printf(" drive %d: off-line\n", xa->driveno); 695 goto done; 696 } 697 if (error) { 698 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 699 goto done; 700 } 701 printf(" drive %d: ready", xa->driveno); 702 703 /* 704 * now set drive parameters (to semi-bogus values) so we can read the 705 * disk label. 706 */ 707 xy->pcyl = xy->ncyl = 1; 708 xy->acyl = 0; 709 xy->nhead = 1; 710 xy->nsect = 1; 711 xy->sectpercyl = 1; 712 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 713 xy->dkb.bt_bad[lcv].bt_cyl = 714 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 715 716 /* read disk label */ 717 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 718 xy->drive_type++) { 719 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 720 dmaddr, fmode); 721 XYC_DONE(xyc, error); 722 if (error == XY_ERR_AOK) break; 723 } 724 725 if (error != XY_ERR_AOK) { 726 printf("\n%s: reading disk label failed: %s\n", 727 xy->sc_dev.dv_xname, xyc_e2str(error)); 728 goto done; 729 } 730 printf(" (drive type %d)\n", xy->drive_type); 731 732 newstate = XY_DRIVE_NOLABEL; 733 734 xy->hw_spt = spt = 0; /* XXX needed ? */ 735 /* Attach the disk: must be before getdisklabel to malloc label */ 736 disk_attach(&xy->sc_dk); 737 738 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 739 goto done; 740 741 /* inform the user of what is up */ 742 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 743 buf, xy->pcyl); 744 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 745 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 746 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 747 XYFM_BPS); 748 749 /* 750 * 450/451 stupidity: the drive type is encoded into the format 751 * of the disk. the drive type in the IOPB must match the drive 752 * type in the format, or you will not be able to do I/O to the 753 * disk (you get header not found errors). if you have two drives 754 * of different sizes that have the same drive type in their 755 * formatting then you are out of luck. 756 * 757 * this problem was corrected in the 753/7053. 758 */ 759 760 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 761 oxy = xyc->sc_drives[lcv]; 762 if (oxy == NULL || oxy == xy) continue; 763 if (oxy->drive_type != xy->drive_type) continue; 764 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 765 xy->nhead != oxy->nhead) { 766 printf("%s: %s and %s must be the same size!\n", 767 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 768 oxy->sc_dev.dv_xname); 769 panic("xy drive size mismatch"); 770 } 771 } 772 773 774 /* now set the real drive parameters! */ 775 776 blk = (xy->nsect - 1) + 777 ((xy->nhead - 1) * xy->nsect) + 778 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 779 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 780 XYC_DONE(xyc, error); 781 if (error) { 782 printf("%s: write drive size failed: %s\n", 783 xy->sc_dev.dv_xname, xyc_e2str(error)); 784 goto done; 785 } 786 newstate = XY_DRIVE_ONLINE; 787 788 /* 789 * read bad144 table. this table resides on the first sector of the 790 * last track of the disk (i.e. second cyl of "acyl" area). 791 */ 792 793 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 794 /* last cyl */ 795 (xy->nhead - 1) * xy->nsect; /* last head */ 796 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 797 dmaddr, fmode); 798 XYC_DONE(xyc, error); 799 if (error) { 800 printf("%s: reading bad144 failed: %s\n", 801 xy->sc_dev.dv_xname, xyc_e2str(error)); 802 goto done; 803 } 804 805 /* check dkbad for sanity */ 806 dkb = (struct dkbad *) buf; 807 for (lcv = 0; lcv < 126; lcv++) { 808 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 809 dkb->bt_bad[lcv].bt_cyl == 0) && 810 dkb->bt_bad[lcv].bt_trksec == 0xffff) 811 continue; /* blank */ 812 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 813 break; 814 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 815 break; 816 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 817 break; 818 } 819 if (lcv != 126) { 820 printf("%s: warning: invalid bad144 sector!\n", 821 xy->sc_dev.dv_xname); 822 } else { 823 bcopy(buf, &xy->dkb, XYFM_BPS); 824 } 825 826 done: 827 if (buf != NULL) { 828 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 829 &seg, rseg, XYFM_BPS, buf); 830 } 831 832 xy->state = newstate; 833 if (!xa->booting) { 834 wakeup(&xy->state); 835 splx(s); 836 } 837 } 838 839 /* 840 * end of autoconfig functions 841 */ 842 843 /* 844 * { b , c } d e v s w f u n c t i o n s 845 */ 846 847 /* 848 * xyclose: close device 849 */ 850 int 851 xyclose(dev, flag, fmt, p) 852 dev_t dev; 853 int flag, fmt; 854 struct proc *p; 855 856 { 857 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 858 int part = DISKPART(dev); 859 860 /* clear mask bits */ 861 862 switch (fmt) { 863 case S_IFCHR: 864 xy->sc_dk.dk_copenmask &= ~(1 << part); 865 break; 866 case S_IFBLK: 867 xy->sc_dk.dk_bopenmask &= ~(1 << part); 868 break; 869 } 870 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 871 872 return 0; 873 } 874 875 /* 876 * xydump: crash dump system 877 */ 878 int 879 xydump(dev, blkno, va, size) 880 dev_t dev; 881 daddr_t blkno; 882 caddr_t va; 883 size_t size; 884 { 885 int unit, part; 886 struct xy_softc *xy; 887 888 unit = DISKUNIT(dev); 889 if (unit >= xy_cd.cd_ndevs) 890 return ENXIO; 891 part = DISKPART(dev); 892 893 xy = xy_cd.cd_devs[unit]; 894 895 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 896 'a' + part); 897 898 return ENXIO; 899 900 /* outline: globals: "dumplo" == sector number of partition to start 901 * dump at (convert to physical sector with partition table) 902 * "dumpsize" == size of dump in clicks "physmem" == size of physical 903 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 904 * physmem) 905 * 906 * dump a copy of physical memory to the dump device starting at sector 907 * "dumplo" in the swap partition (make sure > 0). map in pages as 908 * we go. use polled I/O. 909 * 910 * XXX how to handle NON_CONTIG? */ 911 912 } 913 914 /* 915 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 916 */ 917 int 918 xyioctl(dev, command, addr, flag, p) 919 dev_t dev; 920 u_long command; 921 caddr_t addr; 922 int flag; 923 struct proc *p; 924 925 { 926 struct xy_softc *xy; 927 struct xd_iocmd *xio; 928 int error, s, unit; 929 #ifdef __HAVE_OLD_DISKLABEL 930 struct disklabel newlabel; 931 #endif 932 struct disklabel *lp; 933 934 unit = DISKUNIT(dev); 935 936 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 937 return (ENXIO); 938 939 /* switch on ioctl type */ 940 941 switch (command) { 942 case DIOCSBAD: /* set bad144 info */ 943 if ((flag & FWRITE) == 0) 944 return EBADF; 945 s = splbio(); 946 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 947 splx(s); 948 return 0; 949 950 case DIOCGDINFO: /* get disk label */ 951 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 952 return 0; 953 #ifdef __HAVE_OLD_DISKLABEL 954 case ODIOCGDINFO: 955 newlabel = *(xy->sc_dk.dk_label); 956 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 957 return ENOTTY; 958 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 959 return 0; 960 #endif 961 962 case DIOCGPART: /* get partition info */ 963 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 964 ((struct partinfo *) addr)->part = 965 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 966 return 0; 967 968 case DIOCSDINFO: /* set disk label */ 969 #ifdef __HAVE_OLD_DISKLABEL 970 case ODIOCSDINFO: 971 if (command == ODIOCSDINFO) { 972 memset(&newlabel, 0, sizeof newlabel); 973 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 974 lp = &newlabel; 975 } else 976 #endif 977 lp = (struct disklabel *)addr; 978 979 if ((flag & FWRITE) == 0) 980 return EBADF; 981 error = setdisklabel(xy->sc_dk.dk_label, 982 lp, /* xy->sc_dk.dk_openmask : */ 0, 983 xy->sc_dk.dk_cpulabel); 984 if (error == 0) { 985 if (xy->state == XY_DRIVE_NOLABEL) 986 xy->state = XY_DRIVE_ONLINE; 987 } 988 return error; 989 990 case DIOCWLABEL: /* change write status of disk label */ 991 if ((flag & FWRITE) == 0) 992 return EBADF; 993 if (*(int *) addr) 994 xy->flags |= XY_WLABEL; 995 else 996 xy->flags &= ~XY_WLABEL; 997 return 0; 998 999 case DIOCWDINFO: /* write disk label */ 1000 #ifdef __HAVE_OLD_DISKLABEL 1001 case ODIOCWDINFO: 1002 if (command == ODIOCWDINFO) { 1003 memset(&newlabel, 0, sizeof newlabel); 1004 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1005 lp = &newlabel; 1006 } else 1007 #endif 1008 lp = (struct disklabel *)addr; 1009 1010 if ((flag & FWRITE) == 0) 1011 return EBADF; 1012 error = setdisklabel(xy->sc_dk.dk_label, 1013 lp, /* xy->sc_dk.dk_openmask : */ 0, 1014 xy->sc_dk.dk_cpulabel); 1015 if (error == 0) { 1016 if (xy->state == XY_DRIVE_NOLABEL) 1017 xy->state = XY_DRIVE_ONLINE; 1018 1019 /* Simulate opening partition 0 so write succeeds. */ 1020 xy->sc_dk.dk_openmask |= (1 << 0); 1021 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1022 xystrategy, xy->sc_dk.dk_label, 1023 xy->sc_dk.dk_cpulabel); 1024 xy->sc_dk.dk_openmask = 1025 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1026 } 1027 return error; 1028 1029 case DIOSXDCMD: 1030 xio = (struct xd_iocmd *) addr; 1031 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1032 return (error); 1033 return (xyc_ioctlcmd(xy, dev, xio)); 1034 1035 default: 1036 return ENOTTY; 1037 } 1038 } 1039 1040 /* 1041 * xyopen: open drive 1042 */ 1043 1044 int 1045 xyopen(dev, flag, fmt, p) 1046 dev_t dev; 1047 int flag, fmt; 1048 struct proc *p; 1049 { 1050 int unit, part; 1051 struct xy_softc *xy; 1052 struct xyc_attach_args xa; 1053 1054 /* first, could it be a valid target? */ 1055 1056 unit = DISKUNIT(dev); 1057 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 1058 return (ENXIO); 1059 part = DISKPART(dev); 1060 1061 /* do we need to attach the drive? */ 1062 1063 if (xy->state == XY_DRIVE_UNKNOWN) { 1064 xa.driveno = xy->xy_drive; 1065 xa.fullmode = XY_SUB_WAIT; 1066 xa.booting = 0; 1067 xyattach((struct device *) xy->parent, 1068 (struct device *) xy, &xa); 1069 if (xy->state == XY_DRIVE_UNKNOWN) { 1070 return (EIO); 1071 } 1072 } 1073 /* check for partition */ 1074 1075 if (part != RAW_PART && 1076 (part >= xy->sc_dk.dk_label->d_npartitions || 1077 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1078 return (ENXIO); 1079 } 1080 /* set open masks */ 1081 1082 switch (fmt) { 1083 case S_IFCHR: 1084 xy->sc_dk.dk_copenmask |= (1 << part); 1085 break; 1086 case S_IFBLK: 1087 xy->sc_dk.dk_bopenmask |= (1 << part); 1088 break; 1089 } 1090 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1091 1092 return 0; 1093 } 1094 1095 int 1096 xyread(dev, uio, flags) 1097 dev_t dev; 1098 struct uio *uio; 1099 int flags; 1100 { 1101 1102 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1103 } 1104 1105 int 1106 xywrite(dev, uio, flags) 1107 dev_t dev; 1108 struct uio *uio; 1109 int flags; 1110 { 1111 1112 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1113 } 1114 1115 1116 /* 1117 * xysize: return size of a partition for a dump 1118 */ 1119 1120 int 1121 xysize(dev) 1122 dev_t dev; 1123 1124 { 1125 struct xy_softc *xysc; 1126 int unit, part, size, omask; 1127 1128 /* valid unit? */ 1129 unit = DISKUNIT(dev); 1130 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1131 return (-1); 1132 1133 part = DISKPART(dev); 1134 omask = xysc->sc_dk.dk_openmask & (1 << part); 1135 1136 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1137 return (-1); 1138 1139 /* do it */ 1140 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1141 size = -1; /* only give valid size for swap partitions */ 1142 else 1143 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1144 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1145 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1146 return (-1); 1147 return (size); 1148 } 1149 1150 /* 1151 * xystrategy: buffering system interface to xy. 1152 */ 1153 1154 void 1155 xystrategy(bp) 1156 struct buf *bp; 1157 1158 { 1159 struct xy_softc *xy; 1160 int s, unit; 1161 struct xyc_attach_args xa; 1162 struct disklabel *lp; 1163 daddr_t blkno; 1164 1165 unit = DISKUNIT(bp->b_dev); 1166 1167 /* check for live device */ 1168 1169 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1170 bp->b_blkno < 0 || 1171 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1172 bp->b_error = EINVAL; 1173 goto bad; 1174 } 1175 /* do we need to attach the drive? */ 1176 1177 if (xy->state == XY_DRIVE_UNKNOWN) { 1178 xa.driveno = xy->xy_drive; 1179 xa.fullmode = XY_SUB_WAIT; 1180 xa.booting = 0; 1181 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1182 if (xy->state == XY_DRIVE_UNKNOWN) { 1183 bp->b_error = EIO; 1184 goto bad; 1185 } 1186 } 1187 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1188 /* no I/O to unlabeled disks, unless raw partition */ 1189 bp->b_error = EIO; 1190 goto bad; 1191 } 1192 /* short circuit zero length request */ 1193 1194 if (bp->b_bcount == 0) 1195 goto done; 1196 1197 /* check bounds with label (disksubr.c). Determine the size of the 1198 * transfer, and make sure it is within the boundaries of the 1199 * partition. Adjust transfer if needed, and signal errors or early 1200 * completion. */ 1201 1202 lp = xy->sc_dk.dk_label; 1203 1204 if (bounds_check_with_label(bp, lp, 1205 (xy->flags & XY_WLABEL) != 0) <= 0) 1206 goto done; 1207 1208 /* 1209 * Now convert the block number to absolute and put it in 1210 * terms of the device's logical block size. 1211 */ 1212 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1213 if (DISKPART(bp->b_dev) != RAW_PART) 1214 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1215 1216 bp->b_rawblkno = blkno; 1217 1218 /* 1219 * now we know we have a valid buf structure that we need to do I/O 1220 * on. 1221 */ 1222 s = splbio(); /* protect the queues */ 1223 1224 BUFQ_PUT(&xy->xyq, bp); 1225 1226 /* start 'em up */ 1227 1228 xyc_start(xy->parent, NULL); 1229 1230 /* done! */ 1231 1232 splx(s); 1233 return; 1234 1235 bad: /* tells upper layers we have an error */ 1236 bp->b_flags |= B_ERROR; 1237 done: /* tells upper layers we are done with this 1238 * buf */ 1239 bp->b_resid = bp->b_bcount; 1240 biodone(bp); 1241 } 1242 /* 1243 * end of {b,c}devsw functions 1244 */ 1245 1246 /* 1247 * i n t e r r u p t f u n c t i o n 1248 * 1249 * xycintr: hardware interrupt. 1250 */ 1251 int 1252 xycintr(v) 1253 void *v; 1254 1255 { 1256 struct xyc_softc *xycsc = v; 1257 1258 /* kick the event counter */ 1259 1260 xycsc->sc_intrcnt.ev_count++; 1261 1262 /* remove as many done IOPBs as possible */ 1263 1264 xyc_remove_iorq(xycsc); 1265 1266 /* start any iorq's already waiting */ 1267 1268 xyc_start(xycsc, NULL); 1269 1270 return (1); 1271 } 1272 /* 1273 * end of interrupt function 1274 */ 1275 1276 /* 1277 * i n t e r n a l f u n c t i o n s 1278 */ 1279 1280 /* 1281 * xyc_rqinit: fill out the fields of an I/O request 1282 */ 1283 1284 inline void 1285 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1286 struct xy_iorq *rq; 1287 struct xyc_softc *xyc; 1288 struct xy_softc *xy; 1289 int md; 1290 u_long blk; 1291 int cnt; 1292 caddr_t db; 1293 struct buf *bp; 1294 { 1295 rq->xyc = xyc; 1296 rq->xy = xy; 1297 rq->ttl = XYC_MAXTTL + 10; 1298 rq->mode = md; 1299 rq->tries = rq->errno = rq->lasterror = 0; 1300 rq->blockno = blk; 1301 rq->sectcnt = cnt; 1302 rq->dbuf = db; 1303 rq->buf = bp; 1304 } 1305 1306 /* 1307 * xyc_rqtopb: load up an IOPB based on an iorq 1308 */ 1309 1310 void 1311 xyc_rqtopb(iorq, iopb, cmd, subfun) 1312 struct xy_iorq *iorq; 1313 struct xy_iopb *iopb; 1314 int cmd, subfun; 1315 1316 { 1317 u_long block, dp; 1318 1319 /* normal IOPB case, standard stuff */ 1320 1321 /* chain bit handled later */ 1322 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1323 iopb->com = cmd; 1324 iopb->errno = 0; 1325 iopb->errs = 0; 1326 iopb->done = 0; 1327 if (iorq->xy) { 1328 iopb->unit = iorq->xy->xy_drive; 1329 iopb->dt = iorq->xy->drive_type; 1330 } else { 1331 iopb->unit = 0; 1332 iopb->dt = 0; 1333 } 1334 block = iorq->blockno; 1335 if (iorq->xy == NULL || block == 0) { 1336 iopb->sect = iopb->head = iopb->cyl = 0; 1337 } else { 1338 iopb->sect = block % iorq->xy->nsect; 1339 block = block / iorq->xy->nsect; 1340 iopb->head = block % iorq->xy->nhead; 1341 block = block / iorq->xy->nhead; 1342 iopb->cyl = block; 1343 } 1344 iopb->scnt = iorq->sectcnt; 1345 dp = (u_long) iorq->dbuf; 1346 if (iorq->dbuf == NULL) { 1347 iopb->dataa = 0; 1348 iopb->datar = 0; 1349 } else { 1350 iopb->dataa = (dp & 0xffff); 1351 iopb->datar = ((dp & 0xff0000) >> 16); 1352 } 1353 iopb->subfn = subfun; 1354 } 1355 1356 1357 /* 1358 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1359 */ 1360 1361 int 1362 xyc_unbusy(xyc, del) 1363 1364 struct xyc *xyc; 1365 int del; 1366 1367 { 1368 while (del-- > 0) { 1369 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1370 break; 1371 DELAY(1); 1372 } 1373 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1374 } 1375 1376 /* 1377 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1378 * note that NORM requests are handled separately. 1379 */ 1380 int 1381 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1382 struct xyc_softc *xycsc; 1383 int cmd, subfn, unit, block, scnt; 1384 char *dptr; 1385 int fullmode; 1386 1387 { 1388 int submode = XY_STATE(fullmode); 1389 struct xy_iorq *iorq = xycsc->ciorq; 1390 struct xy_iopb *iopb = xycsc->ciopb; 1391 1392 /* 1393 * is someone else using the control iopq wait for it if we can 1394 */ 1395 start: 1396 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1397 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1398 return(XY_ERR_FAIL); 1399 goto start; 1400 } 1401 1402 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1403 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1404 iorq->mode = XY_SUB_FREE; 1405 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1406 } 1407 1408 /* init iorq/iopb */ 1409 1410 xyc_rqinit(iorq, xycsc, 1411 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1412 fullmode, block, scnt, dptr, NULL); 1413 1414 /* load IOPB from iorq */ 1415 1416 xyc_rqtopb(iorq, iopb, cmd, subfn); 1417 1418 /* submit it for processing */ 1419 1420 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1421 1422 return(XY_ERR_AOK); 1423 } 1424 1425 /* 1426 * xyc_startbuf 1427 * start a buffer for running 1428 */ 1429 1430 int 1431 xyc_startbuf(xycsc, xysc, bp) 1432 struct xyc_softc *xycsc; 1433 struct xy_softc *xysc; 1434 struct buf *bp; 1435 1436 { 1437 int partno, error; 1438 struct xy_iorq *iorq; 1439 struct xy_iopb *iopb; 1440 u_long block; 1441 1442 iorq = xysc->xyrq; 1443 iopb = iorq->iopb; 1444 1445 /* get buf */ 1446 1447 if (bp == NULL) 1448 panic("xyc_startbuf null buf"); 1449 1450 partno = DISKPART(bp->b_dev); 1451 #ifdef XYC_DEBUG 1452 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1453 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1454 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1455 bp->b_bcount, bp->b_data); 1456 #endif 1457 1458 /* 1459 * load request. 1460 * 1461 * note that iorq points to the buffer as mapped into DVMA space, 1462 * where as the bp->b_data points to its non-DVMA mapping. 1463 */ 1464 1465 block = bp->b_rawblkno; 1466 1467 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1468 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1469 if (error != 0) { 1470 printf("%s: warning: cannot load DMA map\n", 1471 xycsc->sc_dev.dv_xname); 1472 return (XY_ERR_FAIL); /* XXX: need some sort of 1473 * call-back scheme here? */ 1474 } 1475 1476 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1477 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1478 ? BUS_DMASYNC_PREREAD 1479 : BUS_DMASYNC_PREWRITE); 1480 1481 /* init iorq and load iopb from it */ 1482 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1483 bp->b_bcount / XYFM_BPS, 1484 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1485 bp); 1486 1487 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1488 1489 /* Instrumentation. */ 1490 disk_busy(&xysc->sc_dk); 1491 1492 return (XY_ERR_AOK); 1493 } 1494 1495 1496 /* 1497 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1498 * if ok. if it fail returns an error code. type is XY_SUB_*. 1499 * 1500 * note: caller frees iorq in all cases except NORM 1501 * 1502 * return value: 1503 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1504 * WAIT: XY_AOK (success), <error-code> (failed) 1505 * POLL: <same as WAIT> 1506 * NOQ : <same as NORM> 1507 * 1508 * there are three sources for i/o requests: 1509 * [1] xystrategy: normal block I/O, using "struct buf" system. 1510 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1511 * [3] open/ioctl: these are I/O requests done in the context of a process, 1512 * and the process should block until they are done. 1513 * 1514 * software state is stored in the iorq structure. each iorq has an 1515 * iopb structure. the hardware understands the iopb structure. 1516 * every command must go through an iopb. a 450 handles one iopb at a 1517 * time, where as a 451 can take them in chains. [the 450 claims it 1518 * can handle chains, but is appears to be buggy...] iopb are allocated 1519 * in DVMA space at boot up time. each disk gets one iopb, and the 1520 * controller gets one (for POLL and WAIT commands). what happens if 1521 * the iopb is busy? for i/o type [1], the buffers are queued at the 1522 * "buff" layer and * picked up later by the interrupt routine. for case 1523 * [2] we can only be blocked if there is a WAIT type I/O request being 1524 * run. since this can only happen when we are crashing, we wait a sec 1525 * and then steal the IOPB. for case [3] the process can sleep 1526 * on the iorq free list until some iopbs are avaliable. 1527 */ 1528 1529 1530 int 1531 xyc_submit_iorq(xycsc, iorq, type) 1532 struct xyc_softc *xycsc; 1533 struct xy_iorq *iorq; 1534 int type; 1535 1536 { 1537 struct xy_iopb *dmaiopb; 1538 1539 #ifdef XYC_DEBUG 1540 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1541 xycsc->sc_dev.dv_xname, iorq, type); 1542 #endif 1543 1544 /* first check and see if controller is busy */ 1545 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1546 #ifdef XYC_DEBUG 1547 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1548 #endif 1549 if (type == XY_SUB_NOQ) 1550 return (XY_ERR_FAIL); /* failed */ 1551 switch (type) { 1552 case XY_SUB_NORM: 1553 return XY_ERR_AOK; /* success */ 1554 case XY_SUB_WAIT: 1555 while (iorq->iopb->done == 0) { 1556 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1557 } 1558 return (iorq->errno); 1559 case XY_SUB_POLL: /* steal controller */ 1560 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1561 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1562 panic("xyc_submit_iorq: stuck xyc"); 1563 printf("%s: stole controller\n", 1564 xycsc->sc_dev.dv_xname); 1565 break; 1566 default: 1567 panic("xyc_submit_iorq adding"); 1568 } 1569 } 1570 1571 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1572 if (dmaiopb == NULL) { /* nothing doing? */ 1573 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1574 return(XY_ERR_AOK); 1575 panic("xyc_submit_iorq: xyc_chain failed!"); 1576 } 1577 1578 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1579 1580 /* command now running, wrap it up */ 1581 switch (type) { 1582 case XY_SUB_NORM: 1583 case XY_SUB_NOQ: 1584 return (XY_ERR_AOK); /* success */ 1585 case XY_SUB_WAIT: 1586 while (iorq->iopb->done == 0) { 1587 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1588 } 1589 return (iorq->errno); 1590 case XY_SUB_POLL: 1591 return (xyc_piodriver(xycsc, iorq)); 1592 default: 1593 panic("xyc_submit_iorq wrap up"); 1594 } 1595 panic("xyc_submit_iorq"); 1596 return 0; /* not reached */ 1597 } 1598 1599 1600 /* 1601 * xyc_chain: build a chain. return dvma address of first element in 1602 * the chain. iorq != NULL: means we only want that item on the chain. 1603 */ 1604 1605 struct xy_iopb * 1606 xyc_chain(xycsc, iorq) 1607 struct xyc_softc *xycsc; 1608 struct xy_iorq *iorq; 1609 1610 { 1611 int togo, chain, hand; 1612 1613 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1614 1615 /* 1616 * promote control IOPB to the top 1617 */ 1618 if (iorq == NULL) { 1619 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1620 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1621 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1622 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1623 } 1624 1625 /* 1626 * special case: if iorq != NULL then we have a POLL or WAIT request. 1627 * we let these take priority and do them first. 1628 */ 1629 if (iorq) { 1630 xycsc->xy_chain[0] = iorq; 1631 iorq->iopb->chen = 0; 1632 return(iorq->dmaiopb); 1633 } 1634 1635 /* 1636 * NORM case: do round robin and maybe chain (if allowed and possible) 1637 */ 1638 chain = 0; 1639 hand = xycsc->xy_hand; 1640 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1641 1642 for (togo = XYC_MAXIOPB; togo > 0; 1643 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1644 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1645 1646 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1647 xycsc->iopbase[hand].done) 1648 continue; /* not ready-for-i/o */ 1649 1650 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1651 iopb = xycsc->xy_chain[chain]->iopb; 1652 iopb->chen = 0; 1653 if (chain != 0) { 1654 /* adding a link to a chain */ 1655 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1656 prev_iopb->chen = 1; 1657 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1658 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1659 } else { 1660 /* head of chain */ 1661 iorq = xycsc->xy_chain[chain]; 1662 } 1663 chain++; 1664 1665 /* quit if chaining dis-allowed */ 1666 if (xycsc->no_ols) 1667 break; 1668 } 1669 1670 return(iorq ? iorq->dmaiopb : NULL); 1671 } 1672 1673 /* 1674 * xyc_piodriver 1675 * 1676 * programmed i/o driver. this function takes over the computer 1677 * and drains off the polled i/o request. it returns the status of the iorq 1678 * the caller is interesting in. 1679 */ 1680 int 1681 xyc_piodriver(xycsc, iorq) 1682 struct xyc_softc *xycsc; 1683 struct xy_iorq *iorq; 1684 1685 { 1686 int nreset = 0; 1687 int retval = 0; 1688 u_long res; 1689 #ifdef XYC_DEBUG 1690 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1691 #endif 1692 1693 while (iorq->iopb->done == 0) { 1694 1695 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1696 1697 /* we expect some progress soon */ 1698 if (res == XY_ERR_FAIL && nreset >= 2) { 1699 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1700 #ifdef XYC_DEBUG 1701 printf("xyc_piodriver: timeout\n"); 1702 #endif 1703 return (XY_ERR_FAIL); 1704 } 1705 if (res == XY_ERR_FAIL) { 1706 if (xyc_reset(xycsc, 0, 1707 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1708 XY_ERR_FAIL, 1709 0) == XY_ERR_FAIL) 1710 return (XY_ERR_FAIL); /* flushes all but POLL 1711 * requests, resets */ 1712 continue; 1713 } 1714 1715 xyc_remove_iorq(xycsc); /* may resubmit request */ 1716 1717 if (iorq->iopb->done == 0) 1718 xyc_start(xycsc, iorq); 1719 } 1720 1721 /* get return value */ 1722 1723 retval = iorq->errno; 1724 1725 #ifdef XYC_DEBUG 1726 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1727 iorq->errno, xyc_e2str(iorq->errno)); 1728 #endif 1729 1730 /* start up any bufs that have queued */ 1731 1732 xyc_start(xycsc, NULL); 1733 1734 return (retval); 1735 } 1736 1737 /* 1738 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1739 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1740 */ 1741 void 1742 xyc_xyreset(xycsc, xysc) 1743 struct xyc_softc *xycsc; 1744 struct xy_softc *xysc; 1745 1746 { 1747 struct xy_iopb tmpiopb; 1748 struct xy_iopb *iopb; 1749 int del; 1750 1751 iopb = xycsc->ciopb; 1752 1753 /* Save contents */ 1754 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1755 1756 iopb->chen = iopb->done = iopb->errs = 0; 1757 iopb->ien = 0; 1758 iopb->com = XYCMD_RST; 1759 iopb->unit = xysc->xy_drive; 1760 1761 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1762 1763 del = XYC_RESETUSEC; 1764 while (del > 0) { 1765 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1766 break; 1767 DELAY(1); 1768 del--; 1769 } 1770 1771 if (del <= 0 || iopb->errs) { 1772 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1773 xyc_e2str(iopb->errno)); 1774 del = xycsc->xyc->xyc_rsetup; 1775 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1776 panic("xyc_reset"); 1777 } else { 1778 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1779 } 1780 1781 /* Restore contents */ 1782 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1783 } 1784 1785 1786 /* 1787 * xyc_reset: reset everything: requests are marked as errors except 1788 * a polled request (which is resubmitted) 1789 */ 1790 int 1791 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1792 struct xyc_softc *xycsc; 1793 int quiet, error; 1794 struct xy_iorq *blastmode; 1795 struct xy_softc *xysc; 1796 1797 { 1798 int del = 0, lcv, retval = XY_ERR_AOK; 1799 1800 /* soft reset hardware */ 1801 1802 if (!quiet) 1803 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1804 del = xycsc->xyc->xyc_rsetup; 1805 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1806 if (del == XY_ERR_FAIL) { 1807 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1808 retval = XY_ERR_FAIL; 1809 } 1810 if (xysc) 1811 xyc_xyreset(xycsc, xysc); 1812 1813 /* fix queues based on "blast-mode" */ 1814 1815 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1816 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1817 1818 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1819 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1820 XY_STATE(iorq->mode) != XY_SUB_NORM) 1821 /* is it active? */ 1822 continue; 1823 1824 if (blastmode == XY_RSET_ALL || 1825 blastmode != iorq) { 1826 /* failed */ 1827 iorq->errno = error; 1828 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1829 switch (XY_STATE(iorq->mode)) { 1830 case XY_SUB_NORM: 1831 iorq->buf->b_error = EIO; 1832 iorq->buf->b_flags |= B_ERROR; 1833 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1834 1835 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1836 iorq->dmamap->dm_mapsize, 1837 (iorq->buf->b_flags & B_READ) 1838 ? BUS_DMASYNC_POSTREAD 1839 : BUS_DMASYNC_POSTWRITE); 1840 1841 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1842 1843 (void)BUFQ_GET(&iorq->xy->xyq); 1844 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1845 (xycsc->reqs[lcv].buf->b_bcount - 1846 xycsc->reqs[lcv].buf->b_resid)); 1847 biodone(iorq->buf); 1848 iorq->mode = XY_SUB_FREE; 1849 break; 1850 case XY_SUB_WAIT: 1851 wakeup(iorq); 1852 case XY_SUB_POLL: 1853 iorq->mode = 1854 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1855 break; 1856 } 1857 1858 } else { 1859 1860 /* resubmit, no need to do anything here */ 1861 } 1862 } 1863 1864 /* 1865 * now, if stuff is waiting, start it. 1866 * since we just reset it should go 1867 */ 1868 xyc_start(xycsc, NULL); 1869 1870 return (retval); 1871 } 1872 1873 /* 1874 * xyc_start: start waiting buffers 1875 */ 1876 1877 void 1878 xyc_start(xycsc, iorq) 1879 struct xyc_softc *xycsc; 1880 struct xy_iorq *iorq; 1881 1882 { 1883 int lcv; 1884 struct xy_softc *xy; 1885 1886 if (iorq == NULL) { 1887 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1888 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1889 if (BUFQ_PEEK(&xy->xyq) == NULL) continue; 1890 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1891 xyc_startbuf(xycsc, xy, BUFQ_PEEK(&xy->xyq)); 1892 } 1893 } 1894 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1895 } 1896 1897 /* 1898 * xyc_remove_iorq: remove "done" IOPB's. 1899 */ 1900 1901 int 1902 xyc_remove_iorq(xycsc) 1903 struct xyc_softc *xycsc; 1904 1905 { 1906 int errno, rq, comm, errs; 1907 struct xyc *xyc = xycsc->xyc; 1908 u_long addr; 1909 struct xy_iopb *iopb; 1910 struct xy_iorq *iorq; 1911 struct buf *bp; 1912 1913 if (xyc->xyc_csr & XYC_DERR) { 1914 /* 1915 * DOUBLE ERROR: should never happen under normal use. This 1916 * error is so bad, you can't even tell which IOPB is bad, so 1917 * we dump them all. 1918 */ 1919 errno = XY_ERR_DERR; 1920 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1921 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1922 printf("%s: soft reset failed!\n", 1923 xycsc->sc_dev.dv_xname); 1924 panic("xyc_remove_iorq: controller DEAD"); 1925 } 1926 return (XY_ERR_AOK); 1927 } 1928 1929 /* 1930 * get iopb that is done, loop down the chain 1931 */ 1932 1933 if (xyc->xyc_csr & XYC_ERR) { 1934 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1935 } 1936 if (xyc->xyc_csr & XYC_IPND) { 1937 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1938 } 1939 1940 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1941 iorq = xycsc->xy_chain[rq]; 1942 if (iorq == NULL) break; /* done ! */ 1943 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1944 continue; /* free, or done */ 1945 iopb = iorq->iopb; 1946 if (iopb->done == 0) 1947 continue; /* not done yet */ 1948 1949 comm = iopb->com; 1950 errs = iopb->errs; 1951 1952 if (errs) 1953 iorq->errno = iopb->errno; 1954 else 1955 iorq->errno = 0; 1956 1957 /* handle non-fatal errors */ 1958 1959 if (errs && 1960 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1961 continue; /* AOK: we resubmitted it */ 1962 1963 1964 /* this iorq is now done (hasn't been restarted or anything) */ 1965 1966 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1967 xyc_perror(iorq, iopb, 0); 1968 1969 /* now, if read/write check to make sure we got all the data 1970 * we needed. (this may not be the case if we got an error in 1971 * the middle of a multisector request). */ 1972 1973 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1974 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1975 /* we just successfully processed a bad144 sector 1976 * note: if we are in bad 144 mode, the pointers have 1977 * been advanced already (see above) and are pointing 1978 * at the bad144 sector. to exit bad144 mode, we 1979 * must advance the pointers 1 sector and issue a new 1980 * request if there are still sectors left to process 1981 * 1982 */ 1983 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1984 1985 /* exit b144 mode */ 1986 iorq->mode = iorq->mode & (~XY_MODE_B144); 1987 1988 if (iorq->sectcnt) { /* more to go! */ 1989 iorq->lasterror = iorq->errno = iopb->errno = 0; 1990 iopb->errs = iopb->done = 0; 1991 iorq->tries = 0; 1992 iopb->scnt = iorq->sectcnt; 1993 iopb->cyl = iorq->blockno / 1994 iorq->xy->sectpercyl; 1995 iopb->head = 1996 (iorq->blockno / iorq->xy->nhead) % 1997 iorq->xy->nhead; 1998 iopb->sect = iorq->blockno % XYFM_BPS; 1999 addr = (u_long) iorq->dbuf; 2000 iopb->dataa = (addr & 0xffff); 2001 iopb->datar = ((addr & 0xff0000) >> 16); 2002 /* will resubit at end */ 2003 continue; 2004 } 2005 } 2006 /* final cleanup, totally done with this request */ 2007 2008 switch (XY_STATE(iorq->mode)) { 2009 case XY_SUB_NORM: 2010 bp = iorq->buf; 2011 if (errs) { 2012 bp->b_error = EIO; 2013 bp->b_flags |= B_ERROR; 2014 bp->b_resid = iorq->sectcnt * XYFM_BPS; 2015 } else { 2016 bp->b_resid = 0; /* done */ 2017 } 2018 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2019 iorq->dmamap->dm_mapsize, 2020 (iorq->buf->b_flags & B_READ) 2021 ? BUS_DMASYNC_POSTREAD 2022 : BUS_DMASYNC_POSTWRITE); 2023 2024 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2025 2026 (void)BUFQ_GET(&iorq->xy->xyq); 2027 disk_unbusy(&iorq->xy->sc_dk, 2028 (bp->b_bcount - bp->b_resid)); 2029 iorq->mode = XY_SUB_FREE; 2030 biodone(bp); 2031 break; 2032 case XY_SUB_WAIT: 2033 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2034 wakeup(iorq); 2035 break; 2036 case XY_SUB_POLL: 2037 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2038 break; 2039 } 2040 } 2041 2042 return (XY_ERR_AOK); 2043 } 2044 2045 /* 2046 * xyc_perror: print error. 2047 * - if still_trying is true: we got an error, retried and got a 2048 * different error. in that case lasterror is the old error, 2049 * and errno is the new one. 2050 * - if still_trying is not true, then if we ever had an error it 2051 * is in lasterror. also, if iorq->errno == 0, then we recovered 2052 * from that error (otherwise iorq->errno == iorq->lasterror). 2053 */ 2054 void 2055 xyc_perror(iorq, iopb, still_trying) 2056 struct xy_iorq *iorq; 2057 struct xy_iopb *iopb; 2058 int still_trying; 2059 2060 { 2061 2062 int error = iorq->lasterror; 2063 2064 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 2065 : iorq->xyc->sc_dev.dv_xname); 2066 if (iorq->buf) 2067 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2068 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2069 printf("%s %d/%d/%d: ", 2070 (iopb->com == XYCMD_RD) ? "read" : "write", 2071 iopb->cyl, iopb->head, iopb->sect); 2072 printf("%s", xyc_e2str(error)); 2073 2074 if (still_trying) 2075 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 2076 else 2077 if (iorq->errno == 0) 2078 printf(" [recovered in %d tries]", iorq->tries); 2079 2080 printf("\n"); 2081 } 2082 2083 /* 2084 * xyc_error: non-fatal error encountered... recover. 2085 * return AOK if resubmitted, return FAIL if this iopb is done 2086 */ 2087 int 2088 xyc_error(xycsc, iorq, iopb, comm) 2089 struct xyc_softc *xycsc; 2090 struct xy_iorq *iorq; 2091 struct xy_iopb *iopb; 2092 int comm; 2093 2094 { 2095 int errno = iorq->errno; 2096 int erract = xyc_entoact(errno); 2097 int oldmode, advance; 2098 #ifdef __sparc__ 2099 int i; 2100 #endif 2101 2102 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2103 oldmode = iorq->mode; 2104 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2105 /* make xyc_start ignore us */ 2106 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 2107 iorq->mode = oldmode; 2108 } 2109 /* check for read/write to a sector in bad144 table if bad: redirect 2110 * request to bad144 area */ 2111 2112 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2113 (iorq->mode & XY_MODE_B144) == 0) { 2114 advance = iorq->sectcnt - iopb->scnt; 2115 XYC_ADVANCE(iorq, advance); 2116 #ifdef __sparc__ 2117 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2118 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2119 iorq->blockno % iorq->xy->nsect)) != -1) { 2120 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2121 * redirect */ 2122 iopb->errno = iopb->done = iopb->errs = 0; 2123 iopb->scnt = 1; 2124 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2125 /* second to last acyl */ 2126 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2127 * standard */ 2128 iopb->head = i / iorq->xy->nhead; 2129 iopb->sect = i % iorq->xy->nhead; 2130 /* will resubmit when we come out of remove_iorq */ 2131 return (XY_ERR_AOK); /* recovered! */ 2132 } 2133 #endif 2134 } 2135 2136 /* 2137 * it isn't a bad144 sector, must be real error! see if we can retry 2138 * it? 2139 */ 2140 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2141 xyc_perror(iorq, iopb, 1); /* inform of error state 2142 * change */ 2143 iorq->lasterror = errno; 2144 2145 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2146 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2147 iorq->tries++; 2148 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2149 /* will resubmit at end of remove_iorq */ 2150 return (XY_ERR_AOK); /* recovered! */ 2151 } 2152 2153 /* failed to recover from this error */ 2154 return (XY_ERR_FAIL); 2155 } 2156 2157 /* 2158 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2159 */ 2160 void 2161 xyc_tick(arg) 2162 void *arg; 2163 2164 { 2165 struct xyc_softc *xycsc = arg; 2166 int lcv, s, reset = 0; 2167 2168 /* reduce ttl for each request if one goes to zero, reset xyc */ 2169 s = splbio(); 2170 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2171 if (xycsc->reqs[lcv].mode == 0 || 2172 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2173 continue; 2174 xycsc->reqs[lcv].ttl--; 2175 if (xycsc->reqs[lcv].ttl == 0) 2176 reset = 1; 2177 } 2178 if (reset) { 2179 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2180 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2181 } 2182 splx(s); 2183 2184 /* until next time */ 2185 2186 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2187 } 2188 2189 /* 2190 * xyc_ioctlcmd: this function provides a user level interface to the 2191 * controller via ioctl. this allows "format" programs to be written 2192 * in user code, and is also useful for some debugging. we return 2193 * an error code. called at user priority. 2194 * 2195 * XXX missing a few commands (see the 7053 driver for ideas) 2196 */ 2197 int 2198 xyc_ioctlcmd(xy, dev, xio) 2199 struct xy_softc *xy; 2200 dev_t dev; 2201 struct xd_iocmd *xio; 2202 2203 { 2204 int s, rqno, dummy = 0; 2205 caddr_t dvmabuf = NULL, buf = NULL; 2206 struct xyc_softc *xycsc; 2207 int rseg, error; 2208 bus_dma_segment_t seg; 2209 2210 /* check sanity of requested command */ 2211 2212 switch (xio->cmd) { 2213 2214 case XYCMD_NOP: /* no op: everything should be zero */ 2215 if (xio->subfn || xio->dptr || xio->dlen || 2216 xio->block || xio->sectcnt) 2217 return (EINVAL); 2218 break; 2219 2220 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2221 case XYCMD_WR: 2222 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2223 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2224 return (EINVAL); 2225 break; 2226 2227 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2228 return (EINVAL); 2229 2230 break; 2231 2232 default: 2233 return (EINVAL);/* ??? */ 2234 } 2235 2236 xycsc = xy->parent; 2237 2238 /* create DVMA buffer for request if needed */ 2239 if (xio->dlen) { 2240 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2241 &seg, &rseg, 2242 xio->dlen, &buf, 2243 (bus_addr_t *)&dvmabuf)) != 0) { 2244 return (error); 2245 } 2246 2247 if (xio->cmd == XYCMD_WR) { 2248 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2249 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2250 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2251 return (error); 2252 } 2253 } 2254 } 2255 /* do it! */ 2256 2257 error = 0; 2258 s = splbio(); 2259 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2260 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2261 if (rqno == XY_ERR_FAIL) { 2262 error = EIO; 2263 goto done; 2264 } 2265 xio->errno = xycsc->ciorq->errno; 2266 xio->tries = xycsc->ciorq->tries; 2267 XYC_DONE(xycsc, dummy); 2268 2269 if (xio->cmd == XYCMD_RD) 2270 error = copyout(buf, xio->dptr, xio->dlen); 2271 2272 done: 2273 splx(s); 2274 if (dvmabuf) { 2275 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2276 xio->dlen, buf); 2277 } 2278 return (error); 2279 } 2280 2281 /* 2282 * xyc_e2str: convert error code number into an error string 2283 */ 2284 char * 2285 xyc_e2str(no) 2286 int no; 2287 { 2288 switch (no) { 2289 case XY_ERR_FAIL: 2290 return ("Software fatal error"); 2291 case XY_ERR_DERR: 2292 return ("DOUBLE ERROR"); 2293 case XY_ERR_AOK: 2294 return ("Successful completion"); 2295 case XY_ERR_IPEN: 2296 return("Interrupt pending"); 2297 case XY_ERR_BCFL: 2298 return("Busy conflict"); 2299 case XY_ERR_TIMO: 2300 return("Operation timeout"); 2301 case XY_ERR_NHDR: 2302 return("Header not found"); 2303 case XY_ERR_HARD: 2304 return("Hard ECC error"); 2305 case XY_ERR_ICYL: 2306 return("Illegal cylinder address"); 2307 case XY_ERR_ISEC: 2308 return("Illegal sector address"); 2309 case XY_ERR_SMAL: 2310 return("Last sector too small"); 2311 case XY_ERR_SACK: 2312 return("Slave ACK error (non-existent memory)"); 2313 case XY_ERR_CHER: 2314 return("Cylinder and head/header error"); 2315 case XY_ERR_SRTR: 2316 return("Auto-seek retry successful"); 2317 case XY_ERR_WPRO: 2318 return("Write-protect error"); 2319 case XY_ERR_UIMP: 2320 return("Unimplemented command"); 2321 case XY_ERR_DNRY: 2322 return("Drive not ready"); 2323 case XY_ERR_SZER: 2324 return("Sector count zero"); 2325 case XY_ERR_DFLT: 2326 return("Drive faulted"); 2327 case XY_ERR_ISSZ: 2328 return("Illegal sector size"); 2329 case XY_ERR_SLTA: 2330 return("Self test A"); 2331 case XY_ERR_SLTB: 2332 return("Self test B"); 2333 case XY_ERR_SLTC: 2334 return("Self test C"); 2335 case XY_ERR_SOFT: 2336 return("Soft ECC error"); 2337 case XY_ERR_SFOK: 2338 return("Soft ECC error recovered"); 2339 case XY_ERR_IHED: 2340 return("Illegal head"); 2341 case XY_ERR_DSEQ: 2342 return("Disk sequencer error"); 2343 case XY_ERR_SEEK: 2344 return("Seek error"); 2345 default: 2346 return ("Unknown error"); 2347 } 2348 } 2349 2350 int 2351 xyc_entoact(errno) 2352 2353 int errno; 2354 2355 { 2356 switch (errno) { 2357 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2358 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2359 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2360 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2361 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2362 2363 return(XY_ERA_PROG); /* program error ! */ 2364 2365 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2366 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2367 case XY_ERR_SOFT: 2368 2369 return(XY_ERA_HARD); /* hard error, retry */ 2370 2371 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2372 2373 return(XY_ERA_RSET); /* hard error reset */ 2374 2375 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2376 2377 return(XY_ERA_SOFT); /* an FYI error */ 2378 2379 case XY_ERR_WPRO: 2380 2381 return(XY_ERA_WPRO); /* write protect */ 2382 } 2383 2384 return(XY_ERA_PROG); /* ??? */ 2385 } 2386
Indexes created Tue Sep 30 11:09:46 GMT 2025