xy.c revision 1.36
1 /* $NetBSD: xy.c,v 1.36 2001/07/22 13:34:10 wiz 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 #undef XYC_DEBUG /* full debug */ 54 #undef XYC_DIAG /* extra sanity checks */ 55 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 56 #define XYC_DIAG /* link in with master DIAG option */ 57 #endif 58 59 #include <sys/param.h> 60 #include <sys/proc.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/file.h> 64 #include <sys/stat.h> 65 #include <sys/ioctl.h> 66 #include <sys/buf.h> 67 #include <sys/uio.h> 68 #include <sys/malloc.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/syslog.h> 73 #include <sys/dkbad.h> 74 #include <sys/conf.h> 75 76 #include <machine/bus.h> 77 #include <machine/intr.h> 78 79 #if defined(__sparc__) || defined(sun3) 80 #include <dev/sun/disklabel.h> 81 #endif 82 83 #include <dev/vme/vmereg.h> 84 #include <dev/vme/vmevar.h> 85 86 #include <dev/vme/xyreg.h> 87 #include <dev/vme/xyvar.h> 88 #include <dev/vme/xio.h> 89 90 #include "locators.h" 91 92 /* 93 * macros 94 */ 95 96 /* 97 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 98 */ 99 #define XYC_GO(XYC, 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->errno; \ 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 __P((struct xyc_softc *, struct xy_iorq *)); 150 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 151 char *xyc_e2str __P((int)); 152 int xyc_entoact __P((int)); 153 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int)); 155 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 156 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 157 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 158 int xyc_remove_iorq __P((struct xyc_softc *)); 159 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *)); 161 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 caddr_t, struct buf *)); 164 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 165 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 166 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 167 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 168 void xyc_tick __P((void *)); 169 int xyc_unbusy __P((struct xyc *, int)); 170 void xyc_xyreset __P((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, caddr_t *, bus_addr_t *); 173 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 174 int, bus_size_t, caddr_t); 175 176 /* machine interrupt hook */ 177 int xycintr __P((void *)); 178 179 /* autoconf */ 180 int xycmatch __P((struct device *, struct cfdata *, void *)); 181 void xycattach __P((struct device *, struct device *, void *)); 182 int xymatch __P((struct device *, struct cfdata *, void *)); 183 void xyattach __P((struct device *, struct device *, void *)); 184 static int xyc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 185 186 static void xydummystrat __P((struct buf *)); 187 int xygetdisklabel __P((struct xy_softc *, void *)); 188 189 bdev_decl(xy); 190 cdev_decl(xy); 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 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 207 int driveno; /* unit number */ 208 int fullmode; /* submit mode */ 209 int booting; /* are we booting or not? */ 210 }; 211 212 /* 213 * dkdriver 214 */ 215 216 struct dkdriver xydkdriver = { xystrategy }; 217 218 /* 219 * start: disk label fix code (XXX) 220 */ 221 222 static void *xy_labeldata; 223 224 static void 225 xydummystrat(bp) 226 struct buf *bp; 227 { 228 if (bp->b_bcount != XYFM_BPS) 229 panic("xydummystrat"); 230 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 231 bp->b_flags |= B_DONE; 232 bp->b_flags &= ~B_BUSY; 233 } 234 235 int 236 xygetdisklabel(xy, b) 237 struct xy_softc *xy; 238 void *b; 239 { 240 char *err; 241 #if defined(__sparc__) || defined(sun3) 242 struct sun_disklabel *sdl; 243 #endif 244 245 /* We already have the label data in `b'; setup for dummy strategy */ 246 xy_labeldata = b; 247 248 /* Required parameter for readdisklabel() */ 249 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 250 251 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 252 xydummystrat, 253 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 254 if (err) { 255 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 256 return(XY_ERR_FAIL); 257 } 258 259 #if defined(__sparc__) || defined(sun3) 260 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 261 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 262 if (sdl->sl_magic == SUN_DKMAGIC) { 263 xy->pcyl = sdl->sl_pcylinders; 264 } else 265 #endif 266 { 267 printf("%s: WARNING: no `pcyl' in disk label.\n", 268 xy->sc_dev.dv_xname); 269 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 270 xy->sc_dk.dk_label->d_acylinders; 271 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 272 xy->sc_dev.dv_xname, xy->pcyl); 273 } 274 275 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 276 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 277 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 278 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 279 xy->sectpercyl = xy->nhead * xy->nsect; 280 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 281 * sun->bsd */ 282 return(XY_ERR_AOK); 283 } 284 285 /* 286 * end: disk label fix code (XXX) 287 */ 288 289 /* 290 * Shorthand for allocating, mapping and loading a DMA buffer 291 */ 292 int 293 xy_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 294 bus_dma_tag_t tag; 295 bus_dmamap_t map; 296 bus_dma_segment_t *seg; 297 int *nsegp; 298 bus_size_t len; 299 caddr_t *kvap; 300 bus_addr_t *dmap; 301 { 302 int nseg; 303 int error; 304 305 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 306 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 307 return (error); 308 } 309 310 if ((error = bus_dmamem_map(tag, seg, nseg, 311 len, kvap, 312 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 313 bus_dmamem_free(tag, seg, nseg); 314 return (error); 315 } 316 317 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 318 BUS_DMA_NOWAIT)) != 0) { 319 bus_dmamem_unmap(tag, *kvap, len); 320 bus_dmamem_free(tag, seg, nseg); 321 return (error); 322 } 323 324 *dmap = map->dm_segs[0].ds_addr; 325 *nsegp = nseg; 326 return (0); 327 } 328 329 void 330 xy_dmamem_free(tag, map, seg, nseg, len, kva) 331 bus_dma_tag_t tag; 332 bus_dmamap_t map; 333 bus_dma_segment_t *seg; 334 int nseg; 335 bus_size_t len; 336 caddr_t kva; 337 { 338 339 bus_dmamap_unload(tag, map); 340 bus_dmamem_unmap(tag, kva, len); 341 bus_dmamem_free(tag, seg, nseg); 342 } 343 344 345 /* 346 * a u t o c o n f i g f u n c t i o n s 347 */ 348 349 /* 350 * xycmatch: determine if xyc is present or not. we do a 351 * soft reset to detect the xyc. 352 */ 353 int 354 xyc_probe(arg, tag, handle) 355 void *arg; 356 bus_space_tag_t tag; 357 bus_space_handle_t handle; 358 { 359 struct xyc *xyc = (void *)handle; /* XXX */ 360 361 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 362 } 363 364 int xycmatch(parent, cf, aux) 365 struct device *parent; 366 struct cfdata *cf; 367 void *aux; 368 { 369 struct vme_attach_args *va = aux; 370 vme_chipset_tag_t ct = va->va_vct; 371 vme_am_t mod; 372 int error; 373 374 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 375 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 376 return (0); 377 378 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 379 mod, VME_D16, xyc_probe, 0); 380 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 381 382 return (error == 0); 383 } 384 385 /* 386 * xycattach: attach controller 387 */ 388 void 389 xycattach(parent, self, aux) 390 struct device *parent, *self; 391 void *aux; 392 393 { 394 struct xyc_softc *xyc = (void *) self; 395 struct vme_attach_args *va = aux; 396 vme_chipset_tag_t ct = va->va_vct; 397 bus_space_tag_t bt; 398 bus_space_handle_t bh; 399 vme_intr_handle_t ih; 400 vme_am_t mod; 401 struct xyc_attach_args xa; 402 int lcv, res, error; 403 bus_dma_segment_t seg; 404 int rseg; 405 vme_mapresc_t resc; 406 407 /* get addressing and intr level stuff from autoconfig and load it 408 * into our xyc_softc. */ 409 410 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 411 412 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 413 panic("xyc: vme alloc"); 414 415 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 416 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 417 panic("xyc: vme_map"); 418 419 xyc->xyc = (struct xyc *) bh; /* XXX */ 420 xyc->ipl = va->ilevel; 421 xyc->vector = va->ivector; 422 xyc->no_ols = 0; /* XXX should be from config */ 423 424 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 425 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 426 427 /* 428 * allocate and zero buffers 429 * check boundaries of the KVA's ... all IOPBs must reside in 430 * the same 64K region. 431 */ 432 433 /* Get DMA handle for misc. transfers */ 434 if ((error = vme_dmamap_create( 435 ct, /* VME chip tag */ 436 MAXPHYS, /* size */ 437 VME_AM_A24, /* address modifier */ 438 VME_D16, /* data size */ 439 0, /* swap */ 440 1, /* nsegments */ 441 MAXPHYS, /* maxsegsz */ 442 0, /* boundary */ 443 BUS_DMA_NOWAIT, 444 &xyc->reqs[lcv].dmamap)) != 0) { 445 446 printf("%s: DMA buffer map create error %d\n", 447 xyc->sc_dev.dv_xname, error); 448 return; 449 } 450 451 /* Get DMA handle for mapping iorq descriptors */ 452 if ((error = vme_dmamap_create( 453 ct, /* VME chip tag */ 454 XYC_MAXIOPB * sizeof(struct xy_iopb), 455 VME_AM_A24, /* address modifier */ 456 VME_D16, /* data size */ 457 0, /* swap */ 458 1, /* nsegments */ 459 XYC_MAXIOPB * sizeof(struct xy_iopb), 460 64*1024, /* boundary */ 461 BUS_DMA_NOWAIT, 462 &xyc->iopmap)) != 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 buffer for iorq descriptors */ 470 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 471 XYC_MAXIOPB * sizeof(struct xy_iopb), 472 (caddr_t *)&xyc->iopbase, 473 (bus_addr_t *)&xyc->dvmaiopb)) != 0) { 474 printf("%s: DMA buffer alloc error %d\n", 475 xyc->sc_dev.dv_xname, error); 476 return; 477 } 478 479 bzero(xyc->iopbase, XYC_MAXIOPB * sizeof(struct xy_iopb)); 480 481 xyc->reqs = (struct xy_iorq *) 482 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 483 if (xyc->reqs == NULL) 484 panic("xyc malloc"); 485 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 486 487 /* 488 * init iorq to iopb pointers, and non-zero fields in the 489 * iopb which never change. 490 */ 491 492 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 493 xyc->xy_chain[lcv] = NULL; 494 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 495 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 496 xyc->iopbase[lcv].asr = 1; /* always the same */ 497 xyc->iopbase[lcv].eef = 1; /* always the same */ 498 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 499 xyc->iopbase[lcv].aud = 1; /* always the same */ 500 xyc->iopbase[lcv].relo = 1; /* always the same */ 501 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 502 503 if ((error = vme_dmamap_create( 504 ct, /* VME chip tag */ 505 MAXPHYS, /* size */ 506 VME_AM_A24, /* address modifier */ 507 VME_D16, /* data size */ 508 0, /* swap */ 509 1, /* nsegments */ 510 MAXPHYS, /* maxsegsz */ 511 0, /* boundary */ 512 BUS_DMA_NOWAIT, 513 &xyc->reqs[lcv].dmamap)) != 0) { 514 515 printf("%s: DMA buffer map create error %d\n", 516 xyc->sc_dev.dv_xname, error); 517 return; 518 } 519 } 520 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 521 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 522 xyc->xy_hand = 0; 523 524 /* read controller parameters and insure we have a 450/451 */ 525 526 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 527 res = xyc->ciopb->ctyp; 528 XYC_DONE(xyc, error); 529 if (res != XYCT_450) { 530 if (error) 531 printf(": %s: ", xyc_e2str(error)); 532 printf(": doesn't identify as a 450/451\n"); 533 return; 534 } 535 printf(": Xylogics 450/451"); 536 if (xyc->no_ols) 537 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 538 printf("\n"); 539 if (error) { 540 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 541 xyc_e2str(error)); 542 return; 543 } 544 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 545 printf("%s: 24 bit addressing turned off\n", 546 xyc->sc_dev.dv_xname); 547 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 548 printf("to enable 24 bit mode and this driver\n"); 549 return; 550 } 551 552 /* link in interrupt with higher level software */ 553 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 554 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 555 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 556 xyc->sc_dev.dv_xname, "intr"); 557 558 callout_init(&xyc->sc_tick_ch); 559 560 /* now we must look for disks using autoconfig */ 561 xa.fullmode = XY_SUB_POLL; 562 xa.booting = 1; 563 564 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 565 (void) config_found(self, (void *) &xa, NULL); 566 567 /* start the watchdog clock */ 568 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 569 570 } 571 572 /* 573 * xymatch: probe for disk. 574 * 575 * note: we almost always say disk is present. this allows us to 576 * spin up and configure a disk after the system is booted (we can 577 * call xyattach!). 578 */ 579 int 580 xymatch(parent, cf, aux) 581 struct device *parent; 582 struct cfdata *cf; 583 void *aux; 584 { 585 struct xyc_attach_args *xa = aux; 586 587 /* looking for autoconf wildcard or exact match */ 588 589 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 590 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 591 return 0; 592 593 return 1; 594 595 } 596 597 /* 598 * xyattach: attach a disk. this can be called from autoconf and also 599 * from xyopen/xystrategy. 600 */ 601 void 602 xyattach(parent, self, aux) 603 struct device *parent, *self; 604 void *aux; 605 606 { 607 struct xy_softc *xy = (void *) self, *oxy; 608 struct xyc_softc *xyc = (void *) parent; 609 struct xyc_attach_args *xa = aux; 610 int spt, mb, blk, lcv, fmode, s = 0, newstate; 611 struct dkbad *dkb; 612 int rseg, error; 613 bus_dma_segment_t seg; 614 caddr_t dmaddr; 615 caddr_t buf; 616 617 /* 618 * Always re-initialize the disk structure. We want statistics 619 * to start with a clean slate. 620 */ 621 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 622 xy->sc_dk.dk_driver = &xydkdriver; 623 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 624 625 /* if booting, init the xy_softc */ 626 627 if (xa->booting) { 628 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 629 xy->flags = 0; 630 xy->parent = xyc; 631 632 /* init queue of waiting bufs */ 633 634 BUFQ_INIT(&xy->xyq); 635 636 xy->xyrq = &xyc->reqs[xa->driveno]; 637 638 } 639 xy->xy_drive = xa->driveno; 640 fmode = xa->fullmode; 641 xyc->sc_drives[xa->driveno] = xy; 642 643 /* if not booting, make sure we are the only process in the attach for 644 * this drive. if locked out, sleep on it. */ 645 646 if (!xa->booting) { 647 s = splbio(); 648 while (xy->state == XY_DRIVE_ATTACHING) { 649 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 650 splx(s); 651 return; 652 } 653 } 654 printf("%s at %s", 655 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 656 } 657 658 /* we now have control */ 659 xy->state = XY_DRIVE_ATTACHING; 660 newstate = XY_DRIVE_UNKNOWN; 661 662 buf = NULL; 663 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 664 XYFM_BPS, 665 (caddr_t *)&buf, 666 (bus_addr_t *)&dmaddr)) != 0) { 667 printf("%s: DMA buffer alloc error %d\n", 668 xyc->sc_dev.dv_xname, error); 669 return; 670 } 671 672 /* first try and reset the drive */ 673 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 674 XYC_DONE(xyc, error); 675 if (error == XY_ERR_DNRY) { 676 printf(" drive %d: off-line\n", xa->driveno); 677 goto done; 678 } 679 if (error) { 680 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 681 goto done; 682 } 683 printf(" drive %d: ready", xa->driveno); 684 685 /* 686 * now set drive parameters (to semi-bogus values) so we can read the 687 * disk label. 688 */ 689 xy->pcyl = xy->ncyl = 1; 690 xy->acyl = 0; 691 xy->nhead = 1; 692 xy->nsect = 1; 693 xy->sectpercyl = 1; 694 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 695 xy->dkb.bt_bad[lcv].bt_cyl = 696 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 697 698 /* read disk label */ 699 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 700 xy->drive_type++) { 701 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 702 dmaddr, fmode); 703 XYC_DONE(xyc, error); 704 if (error == XY_ERR_AOK) break; 705 } 706 707 if (error != XY_ERR_AOK) { 708 printf("\n%s: reading disk label failed: %s\n", 709 xy->sc_dev.dv_xname, xyc_e2str(error)); 710 goto done; 711 } 712 printf(" (drive type %d)\n", xy->drive_type); 713 714 newstate = XY_DRIVE_NOLABEL; 715 716 xy->hw_spt = spt = 0; /* XXX needed ? */ 717 /* Attach the disk: must be before getdisklabel to malloc label */ 718 disk_attach(&xy->sc_dk); 719 720 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 721 goto done; 722 723 /* inform the user of what is up */ 724 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 725 buf, xy->pcyl); 726 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 727 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 728 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 729 XYFM_BPS); 730 731 /* 732 * 450/451 stupidity: the drive type is encoded into the format 733 * of the disk. the drive type in the IOPB must match the drive 734 * type in the format, or you will not be able to do I/O to the 735 * disk (you get header not found errors). if you have two drives 736 * of different sizes that have the same drive type in their 737 * formatting then you are out of luck. 738 * 739 * this problem was corrected in the 753/7053. 740 */ 741 742 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 743 oxy = xyc->sc_drives[lcv]; 744 if (oxy == NULL || oxy == xy) continue; 745 if (oxy->drive_type != xy->drive_type) continue; 746 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 747 xy->nhead != oxy->nhead) { 748 printf("%s: %s and %s must be the same size!\n", 749 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 750 oxy->sc_dev.dv_xname); 751 panic("xy drive size mismatch"); 752 } 753 } 754 755 756 /* now set the real drive parameters! */ 757 758 blk = (xy->nsect - 1) + 759 ((xy->nhead - 1) * xy->nsect) + 760 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 761 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 762 XYC_DONE(xyc, error); 763 if (error) { 764 printf("%s: write drive size failed: %s\n", 765 xy->sc_dev.dv_xname, xyc_e2str(error)); 766 goto done; 767 } 768 newstate = XY_DRIVE_ONLINE; 769 770 /* 771 * read bad144 table. this table resides on the first sector of the 772 * last track of the disk (i.e. second cyl of "acyl" area). 773 */ 774 775 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 776 /* last cyl */ 777 (xy->nhead - 1) * xy->nsect; /* last head */ 778 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 779 dmaddr, fmode); 780 XYC_DONE(xyc, error); 781 if (error) { 782 printf("%s: reading bad144 failed: %s\n", 783 xy->sc_dev.dv_xname, xyc_e2str(error)); 784 goto done; 785 } 786 787 /* check dkbad for sanity */ 788 dkb = (struct dkbad *) buf; 789 for (lcv = 0; lcv < 126; lcv++) { 790 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 791 dkb->bt_bad[lcv].bt_cyl == 0) && 792 dkb->bt_bad[lcv].bt_trksec == 0xffff) 793 continue; /* blank */ 794 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 795 break; 796 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 797 break; 798 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 799 break; 800 } 801 if (lcv != 126) { 802 printf("%s: warning: invalid bad144 sector!\n", 803 xy->sc_dev.dv_xname); 804 } else { 805 bcopy(buf, &xy->dkb, XYFM_BPS); 806 } 807 808 done: 809 if (buf != NULL) { 810 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 811 &seg, rseg, XYFM_BPS, buf); 812 } 813 814 xy->state = newstate; 815 if (!xa->booting) { 816 wakeup(&xy->state); 817 splx(s); 818 } 819 } 820 821 /* 822 * end of autoconfig functions 823 */ 824 825 /* 826 * { b , c } d e v s w f u n c t i o n s 827 */ 828 829 /* 830 * xyclose: close device 831 */ 832 int 833 xyclose(dev, flag, fmt, p) 834 dev_t dev; 835 int flag, fmt; 836 struct proc *p; 837 838 { 839 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 840 int part = DISKPART(dev); 841 842 /* clear mask bits */ 843 844 switch (fmt) { 845 case S_IFCHR: 846 xy->sc_dk.dk_copenmask &= ~(1 << part); 847 break; 848 case S_IFBLK: 849 xy->sc_dk.dk_bopenmask &= ~(1 << part); 850 break; 851 } 852 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 853 854 return 0; 855 } 856 857 /* 858 * xydump: crash dump system 859 */ 860 int 861 xydump(dev, blkno, va, size) 862 dev_t dev; 863 daddr_t blkno; 864 caddr_t va; 865 size_t size; 866 { 867 int unit, part; 868 struct xy_softc *xy; 869 870 unit = DISKUNIT(dev); 871 if (unit >= xy_cd.cd_ndevs) 872 return ENXIO; 873 part = DISKPART(dev); 874 875 xy = xy_cd.cd_devs[unit]; 876 877 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 878 'a' + part); 879 880 return ENXIO; 881 882 /* outline: globals: "dumplo" == sector number of partition to start 883 * dump at (convert to physical sector with partition table) 884 * "dumpsize" == size of dump in clicks "physmem" == size of physical 885 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 886 * physmem) 887 * 888 * dump a copy of physical memory to the dump device starting at sector 889 * "dumplo" in the swap partition (make sure > 0). map in pages as 890 * we go. use polled I/O. 891 * 892 * XXX how to handle NON_CONTIG? */ 893 894 } 895 896 /* 897 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 898 */ 899 int 900 xyioctl(dev, command, addr, flag, p) 901 dev_t dev; 902 u_long command; 903 caddr_t addr; 904 int flag; 905 struct proc *p; 906 907 { 908 struct xy_softc *xy; 909 struct xd_iocmd *xio; 910 int error, s, unit; 911 #ifdef __HAVE_OLD_DISKLABEL 912 struct disklabel newlabel; 913 #endif 914 struct disklabel *lp; 915 916 unit = DISKUNIT(dev); 917 918 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 919 return (ENXIO); 920 921 /* switch on ioctl type */ 922 923 switch (command) { 924 case DIOCSBAD: /* set bad144 info */ 925 if ((flag & FWRITE) == 0) 926 return EBADF; 927 s = splbio(); 928 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 929 splx(s); 930 return 0; 931 932 case DIOCGDINFO: /* get disk label */ 933 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 934 return 0; 935 #ifdef __HAVE_OLD_DISKLABEL 936 case ODIOCGDINFO: 937 newlabel = *(xy->sc_dk.dk_label); 938 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 939 return ENOTTY; 940 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 941 return 0; 942 #endif 943 944 case DIOCGPART: /* get partition info */ 945 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 946 ((struct partinfo *) addr)->part = 947 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 948 return 0; 949 950 case DIOCSDINFO: /* set disk label */ 951 #ifdef __HAVE_OLD_DISKLABEL 952 case ODIOCSDINFO: 953 if (command == ODIOCSDINFO) { 954 memset(&newlabel, 0, sizeof newlabel); 955 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 956 lp = &newlabel; 957 } else 958 #endif 959 lp = (struct disklabel *)addr; 960 961 if ((flag & FWRITE) == 0) 962 return EBADF; 963 error = setdisklabel(xy->sc_dk.dk_label, 964 lp, /* xy->sc_dk.dk_openmask : */ 0, 965 xy->sc_dk.dk_cpulabel); 966 if (error == 0) { 967 if (xy->state == XY_DRIVE_NOLABEL) 968 xy->state = XY_DRIVE_ONLINE; 969 } 970 return error; 971 972 case DIOCWLABEL: /* change write status of disk label */ 973 if ((flag & FWRITE) == 0) 974 return EBADF; 975 if (*(int *) addr) 976 xy->flags |= XY_WLABEL; 977 else 978 xy->flags &= ~XY_WLABEL; 979 return 0; 980 981 case DIOCWDINFO: /* write disk label */ 982 #ifdef __HAVE_OLD_DISKLABEL 983 case ODIOCWDINFO: 984 if (command == ODIOCWDINFO) { 985 memset(&newlabel, 0, sizeof newlabel); 986 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 987 lp = &newlabel; 988 } else 989 #endif 990 lp = (struct disklabel *)addr; 991 992 if ((flag & FWRITE) == 0) 993 return EBADF; 994 error = setdisklabel(xy->sc_dk.dk_label, 995 lp, /* xy->sc_dk.dk_openmask : */ 0, 996 xy->sc_dk.dk_cpulabel); 997 if (error == 0) { 998 if (xy->state == XY_DRIVE_NOLABEL) 999 xy->state = XY_DRIVE_ONLINE; 1000 1001 /* Simulate opening partition 0 so write succeeds. */ 1002 xy->sc_dk.dk_openmask |= (1 << 0); 1003 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1004 xystrategy, xy->sc_dk.dk_label, 1005 xy->sc_dk.dk_cpulabel); 1006 xy->sc_dk.dk_openmask = 1007 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1008 } 1009 return error; 1010 1011 case DIOSXDCMD: 1012 xio = (struct xd_iocmd *) addr; 1013 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1014 return (error); 1015 return (xyc_ioctlcmd(xy, dev, xio)); 1016 1017 default: 1018 return ENOTTY; 1019 } 1020 } 1021 1022 /* 1023 * xyopen: open drive 1024 */ 1025 1026 int 1027 xyopen(dev, flag, fmt, p) 1028 dev_t dev; 1029 int flag, fmt; 1030 struct proc *p; 1031 { 1032 int unit, part; 1033 struct xy_softc *xy; 1034 struct xyc_attach_args xa; 1035 1036 /* first, could it be a valid target? */ 1037 1038 unit = DISKUNIT(dev); 1039 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 1040 return (ENXIO); 1041 part = DISKPART(dev); 1042 1043 /* do we need to attach the drive? */ 1044 1045 if (xy->state == XY_DRIVE_UNKNOWN) { 1046 xa.driveno = xy->xy_drive; 1047 xa.fullmode = XY_SUB_WAIT; 1048 xa.booting = 0; 1049 xyattach((struct device *) xy->parent, 1050 (struct device *) xy, &xa); 1051 if (xy->state == XY_DRIVE_UNKNOWN) { 1052 return (EIO); 1053 } 1054 } 1055 /* check for partition */ 1056 1057 if (part != RAW_PART && 1058 (part >= xy->sc_dk.dk_label->d_npartitions || 1059 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1060 return (ENXIO); 1061 } 1062 /* set open masks */ 1063 1064 switch (fmt) { 1065 case S_IFCHR: 1066 xy->sc_dk.dk_copenmask |= (1 << part); 1067 break; 1068 case S_IFBLK: 1069 xy->sc_dk.dk_bopenmask |= (1 << part); 1070 break; 1071 } 1072 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1073 1074 return 0; 1075 } 1076 1077 int 1078 xyread(dev, uio, flags) 1079 dev_t dev; 1080 struct uio *uio; 1081 int flags; 1082 { 1083 1084 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1085 } 1086 1087 int 1088 xywrite(dev, uio, flags) 1089 dev_t dev; 1090 struct uio *uio; 1091 int flags; 1092 { 1093 1094 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1095 } 1096 1097 1098 /* 1099 * xysize: return size of a partition for a dump 1100 */ 1101 1102 int 1103 xysize(dev) 1104 dev_t dev; 1105 1106 { 1107 struct xy_softc *xysc; 1108 int unit, part, size, omask; 1109 1110 /* valid unit? */ 1111 unit = DISKUNIT(dev); 1112 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1113 return (-1); 1114 1115 part = DISKPART(dev); 1116 omask = xysc->sc_dk.dk_openmask & (1 << part); 1117 1118 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1119 return (-1); 1120 1121 /* do it */ 1122 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1123 size = -1; /* only give valid size for swap partitions */ 1124 else 1125 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1126 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1127 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1128 return (-1); 1129 return (size); 1130 } 1131 1132 /* 1133 * xystrategy: buffering system interface to xy. 1134 */ 1135 1136 void 1137 xystrategy(bp) 1138 struct buf *bp; 1139 1140 { 1141 struct xy_softc *xy; 1142 int s, unit; 1143 struct xyc_attach_args xa; 1144 struct disklabel *lp; 1145 daddr_t blkno; 1146 1147 unit = DISKUNIT(bp->b_dev); 1148 1149 /* check for live device */ 1150 1151 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1152 bp->b_blkno < 0 || 1153 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1154 bp->b_error = EINVAL; 1155 goto bad; 1156 } 1157 /* do we need to attach the drive? */ 1158 1159 if (xy->state == XY_DRIVE_UNKNOWN) { 1160 xa.driveno = xy->xy_drive; 1161 xa.fullmode = XY_SUB_WAIT; 1162 xa.booting = 0; 1163 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1164 if (xy->state == XY_DRIVE_UNKNOWN) { 1165 bp->b_error = EIO; 1166 goto bad; 1167 } 1168 } 1169 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1170 /* no I/O to unlabeled disks, unless raw partition */ 1171 bp->b_error = EIO; 1172 goto bad; 1173 } 1174 /* short circuit zero length request */ 1175 1176 if (bp->b_bcount == 0) 1177 goto done; 1178 1179 /* check bounds with label (disksubr.c). Determine the size of the 1180 * transfer, and make sure it is within the boundaries of the 1181 * partition. Adjust transfer if needed, and signal errors or early 1182 * completion. */ 1183 1184 lp = xy->sc_dk.dk_label; 1185 1186 if (bounds_check_with_label(bp, lp, 1187 (xy->flags & XY_WLABEL) != 0) <= 0) 1188 goto done; 1189 1190 /* 1191 * Now convert the block number to absolute and put it in 1192 * terms of the device's logical block size. 1193 */ 1194 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1195 if (DISKPART(bp->b_dev) != RAW_PART) 1196 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1197 1198 bp->b_rawblkno = blkno; 1199 1200 /* 1201 * now we know we have a valid buf structure that we need to do I/O 1202 * on. 1203 */ 1204 s = splbio(); /* protect the queues */ 1205 1206 disksort_blkno(&xy->xyq, bp); 1207 1208 /* start 'em up */ 1209 1210 xyc_start(xy->parent, NULL); 1211 1212 /* done! */ 1213 1214 splx(s); 1215 return; 1216 1217 bad: /* tells upper layers we have an error */ 1218 bp->b_flags |= B_ERROR; 1219 done: /* tells upper layers we are done with this 1220 * buf */ 1221 bp->b_resid = bp->b_bcount; 1222 biodone(bp); 1223 } 1224 /* 1225 * end of {b,c}devsw functions 1226 */ 1227 1228 /* 1229 * i n t e r r u p t f u n c t i o n 1230 * 1231 * xycintr: hardware interrupt. 1232 */ 1233 int 1234 xycintr(v) 1235 void *v; 1236 1237 { 1238 struct xyc_softc *xycsc = v; 1239 1240 /* kick the event counter */ 1241 1242 xycsc->sc_intrcnt.ev_count++; 1243 1244 /* remove as many done IOPBs as possible */ 1245 1246 xyc_remove_iorq(xycsc); 1247 1248 /* start any iorq's already waiting */ 1249 1250 xyc_start(xycsc, NULL); 1251 1252 return (1); 1253 } 1254 /* 1255 * end of interrupt function 1256 */ 1257 1258 /* 1259 * i n t e r n a l f u n c t i o n s 1260 */ 1261 1262 /* 1263 * xyc_rqinit: fill out the fields of an I/O request 1264 */ 1265 1266 inline void 1267 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1268 struct xy_iorq *rq; 1269 struct xyc_softc *xyc; 1270 struct xy_softc *xy; 1271 int md; 1272 u_long blk; 1273 int cnt; 1274 caddr_t db; 1275 struct buf *bp; 1276 { 1277 rq->xyc = xyc; 1278 rq->xy = xy; 1279 rq->ttl = XYC_MAXTTL + 10; 1280 rq->mode = md; 1281 rq->tries = rq->errno = rq->lasterror = 0; 1282 rq->blockno = blk; 1283 rq->sectcnt = cnt; 1284 rq->dbuf = db; 1285 rq->buf = bp; 1286 } 1287 1288 /* 1289 * xyc_rqtopb: load up an IOPB based on an iorq 1290 */ 1291 1292 void 1293 xyc_rqtopb(iorq, iopb, cmd, subfun) 1294 struct xy_iorq *iorq; 1295 struct xy_iopb *iopb; 1296 int cmd, subfun; 1297 1298 { 1299 u_long block, dp; 1300 1301 /* normal IOPB case, standard stuff */ 1302 1303 /* chain bit handled later */ 1304 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1305 iopb->com = cmd; 1306 iopb->errno = 0; 1307 iopb->errs = 0; 1308 iopb->done = 0; 1309 if (iorq->xy) { 1310 iopb->unit = iorq->xy->xy_drive; 1311 iopb->dt = iorq->xy->drive_type; 1312 } else { 1313 iopb->unit = 0; 1314 iopb->dt = 0; 1315 } 1316 block = iorq->blockno; 1317 if (iorq->xy == NULL || block == 0) { 1318 iopb->sect = iopb->head = iopb->cyl = 0; 1319 } else { 1320 iopb->sect = block % iorq->xy->nsect; 1321 block = block / iorq->xy->nsect; 1322 iopb->head = block % iorq->xy->nhead; 1323 block = block / iorq->xy->nhead; 1324 iopb->cyl = block; 1325 } 1326 iopb->scnt = iorq->sectcnt; 1327 dp = (u_long) iorq->dbuf; 1328 if (iorq->dbuf == NULL) { 1329 iopb->dataa = 0; 1330 iopb->datar = 0; 1331 } else { 1332 iopb->dataa = (dp & 0xffff); 1333 iopb->datar = ((dp & 0xff0000) >> 16); 1334 } 1335 iopb->subfn = subfun; 1336 } 1337 1338 1339 /* 1340 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1341 */ 1342 1343 int 1344 xyc_unbusy(xyc, del) 1345 1346 struct xyc *xyc; 1347 int del; 1348 1349 { 1350 while (del-- > 0) { 1351 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1352 break; 1353 DELAY(1); 1354 } 1355 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1356 } 1357 1358 /* 1359 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1360 * note that NORM requests are handled separately. 1361 */ 1362 int 1363 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1364 struct xyc_softc *xycsc; 1365 int cmd, subfn, unit, block, scnt; 1366 char *dptr; 1367 int fullmode; 1368 1369 { 1370 int submode = XY_STATE(fullmode); 1371 struct xy_iorq *iorq = xycsc->ciorq; 1372 struct xy_iopb *iopb = xycsc->ciopb; 1373 1374 /* 1375 * is someone else using the control iopq wait for it if we can 1376 */ 1377 start: 1378 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1379 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1380 return(XY_ERR_FAIL); 1381 goto start; 1382 } 1383 1384 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1385 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1386 iorq->mode = XY_SUB_FREE; 1387 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1388 } 1389 1390 /* init iorq/iopb */ 1391 1392 xyc_rqinit(iorq, xycsc, 1393 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1394 fullmode, block, scnt, dptr, NULL); 1395 1396 /* load IOPB from iorq */ 1397 1398 xyc_rqtopb(iorq, iopb, cmd, subfn); 1399 1400 /* submit it for processing */ 1401 1402 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1403 1404 return(XY_ERR_AOK); 1405 } 1406 1407 /* 1408 * xyc_startbuf 1409 * start a buffer for running 1410 */ 1411 1412 int 1413 xyc_startbuf(xycsc, xysc, bp) 1414 struct xyc_softc *xycsc; 1415 struct xy_softc *xysc; 1416 struct buf *bp; 1417 1418 { 1419 int partno, error; 1420 struct xy_iorq *iorq; 1421 struct xy_iopb *iopb; 1422 u_long block; 1423 1424 iorq = xysc->xyrq; 1425 iopb = iorq->iopb; 1426 1427 /* get buf */ 1428 1429 if (bp == NULL) 1430 panic("xyc_startbuf null buf"); 1431 1432 partno = DISKPART(bp->b_dev); 1433 #ifdef XYC_DEBUG 1434 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1435 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1436 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1437 bp->b_bcount, bp->b_data); 1438 #endif 1439 1440 /* 1441 * load request. 1442 * 1443 * note that iorq points to the buffer as mapped into DVMA space, 1444 * where as the bp->b_data points to its non-DVMA mapping. 1445 */ 1446 1447 block = bp->b_rawblkno; 1448 1449 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1450 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1451 if (error != 0) { 1452 printf("%s: warning: cannot load DMA map\n", 1453 xycsc->sc_dev.dv_xname); 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 (caddr_t)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 avaliable. 1509 */ 1510 1511 1512 int 1513 xyc_submit_iorq(xycsc, iorq, type) 1514 struct xyc_softc *xycsc; 1515 struct xy_iorq *iorq; 1516 int type; 1517 1518 { 1519 struct xy_iopb *dmaiopb; 1520 1521 #ifdef XYC_DEBUG 1522 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1523 xycsc->sc_dev.dv_xname, iorq, type); 1524 #endif 1525 1526 /* first check and see if controller is busy */ 1527 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1528 #ifdef XYC_DEBUG 1529 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1530 #endif 1531 if (type == XY_SUB_NOQ) 1532 return (XY_ERR_FAIL); /* failed */ 1533 switch (type) { 1534 case XY_SUB_NORM: 1535 return XY_ERR_AOK; /* success */ 1536 case XY_SUB_WAIT: 1537 while (iorq->iopb->done == 0) { 1538 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1539 } 1540 return (iorq->errno); 1541 case XY_SUB_POLL: /* steal controller */ 1542 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1543 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1544 panic("xyc_submit_iorq: stuck xyc"); 1545 printf("%s: stole controller\n", 1546 xycsc->sc_dev.dv_xname); 1547 break; 1548 default: 1549 panic("xyc_submit_iorq adding"); 1550 } 1551 } 1552 1553 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1554 if (dmaiopb == NULL) { /* nothing doing? */ 1555 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1556 return(XY_ERR_AOK); 1557 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1558 } 1559 1560 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1561 1562 /* command now running, wrap it up */ 1563 switch (type) { 1564 case XY_SUB_NORM: 1565 case XY_SUB_NOQ: 1566 return (XY_ERR_AOK); /* success */ 1567 case XY_SUB_WAIT: 1568 while (iorq->iopb->done == 0) { 1569 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1570 } 1571 return (iorq->errno); 1572 case XY_SUB_POLL: 1573 return (xyc_piodriver(xycsc, iorq)); 1574 default: 1575 panic("xyc_submit_iorq wrap up"); 1576 } 1577 panic("xyc_submit_iorq"); 1578 return 0; /* not reached */ 1579 } 1580 1581 1582 /* 1583 * xyc_chain: build a chain. return dvma address of first element in 1584 * the chain. iorq != NULL: means we only want that item on the chain. 1585 */ 1586 1587 struct xy_iopb * 1588 xyc_chain(xycsc, iorq) 1589 struct xyc_softc *xycsc; 1590 struct xy_iorq *iorq; 1591 1592 { 1593 int togo, chain, hand; 1594 1595 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1596 1597 /* 1598 * promote control IOPB to the top 1599 */ 1600 if (iorq == NULL) { 1601 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1602 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1603 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1604 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1605 } 1606 1607 /* 1608 * special case: if iorq != NULL then we have a POLL or WAIT request. 1609 * we let these take priority and do them first. 1610 */ 1611 if (iorq) { 1612 xycsc->xy_chain[0] = iorq; 1613 iorq->iopb->chen = 0; 1614 return(iorq->dmaiopb); 1615 } 1616 1617 /* 1618 * NORM case: do round robin and maybe chain (if allowed and possible) 1619 */ 1620 chain = 0; 1621 hand = xycsc->xy_hand; 1622 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1623 1624 for (togo = XYC_MAXIOPB; togo > 0; 1625 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1626 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1627 1628 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1629 xycsc->iopbase[hand].done) 1630 continue; /* not ready-for-i/o */ 1631 1632 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1633 iopb = xycsc->xy_chain[chain]->iopb; 1634 iopb->chen = 0; 1635 if (chain != 0) { 1636 /* adding a link to a chain */ 1637 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1638 prev_iopb->chen = 1; 1639 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1640 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1641 } else { 1642 /* head of chain */ 1643 iorq = xycsc->xy_chain[chain]; 1644 } 1645 chain++; 1646 1647 /* quit if chaining dis-allowed */ 1648 if (xycsc->no_ols) 1649 break; 1650 } 1651 1652 return(iorq ? iorq->dmaiopb : NULL); 1653 } 1654 1655 /* 1656 * xyc_piodriver 1657 * 1658 * programmed i/o driver. this function takes over the computer 1659 * and drains off the polled i/o request. it returns the status of the iorq 1660 * the caller is interesting in. 1661 */ 1662 int 1663 xyc_piodriver(xycsc, iorq) 1664 struct xyc_softc *xycsc; 1665 struct xy_iorq *iorq; 1666 1667 { 1668 int nreset = 0; 1669 int retval = 0; 1670 u_long res; 1671 #ifdef XYC_DEBUG 1672 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1673 #endif 1674 1675 while (iorq->iopb->done == 0) { 1676 1677 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1678 1679 /* we expect some progress soon */ 1680 if (res == XY_ERR_FAIL && nreset >= 2) { 1681 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1682 #ifdef XYC_DEBUG 1683 printf("xyc_piodriver: timeout\n"); 1684 #endif 1685 return (XY_ERR_FAIL); 1686 } 1687 if (res == XY_ERR_FAIL) { 1688 if (xyc_reset(xycsc, 0, 1689 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1690 XY_ERR_FAIL, 1691 0) == XY_ERR_FAIL) 1692 return (XY_ERR_FAIL); /* flushes all but POLL 1693 * requests, resets */ 1694 continue; 1695 } 1696 1697 xyc_remove_iorq(xycsc); /* may resubmit request */ 1698 1699 if (iorq->iopb->done == 0) 1700 xyc_start(xycsc, iorq); 1701 } 1702 1703 /* get return value */ 1704 1705 retval = iorq->errno; 1706 1707 #ifdef XYC_DEBUG 1708 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1709 iorq->errno, xyc_e2str(iorq->errno)); 1710 #endif 1711 1712 /* start up any bufs that have queued */ 1713 1714 xyc_start(xycsc, NULL); 1715 1716 return (retval); 1717 } 1718 1719 /* 1720 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1721 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1722 */ 1723 void 1724 xyc_xyreset(xycsc, xysc) 1725 struct xyc_softc *xycsc; 1726 struct xy_softc *xysc; 1727 1728 { 1729 struct xy_iopb tmpiopb; 1730 struct xy_iopb *iopb; 1731 int del; 1732 1733 iopb = xycsc->ciopb; 1734 1735 /* Save contents */ 1736 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1737 1738 iopb->chen = iopb->done = iopb->errs = 0; 1739 iopb->ien = 0; 1740 iopb->com = XYCMD_RST; 1741 iopb->unit = xysc->xy_drive; 1742 1743 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1744 1745 del = XYC_RESETUSEC; 1746 while (del > 0) { 1747 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1748 break; 1749 DELAY(1); 1750 del--; 1751 } 1752 1753 if (del <= 0 || iopb->errs) { 1754 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1755 xyc_e2str(iopb->errno)); 1756 del = xycsc->xyc->xyc_rsetup; 1757 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1758 panic("xyc_reset"); 1759 } else { 1760 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1761 } 1762 1763 /* Restore contents */ 1764 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1765 } 1766 1767 1768 /* 1769 * xyc_reset: reset everything: requests are marked as errors except 1770 * a polled request (which is resubmitted) 1771 */ 1772 int 1773 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1774 struct xyc_softc *xycsc; 1775 int quiet, error; 1776 struct xy_iorq *blastmode; 1777 struct xy_softc *xysc; 1778 1779 { 1780 int del = 0, lcv, retval = XY_ERR_AOK; 1781 1782 /* soft reset hardware */ 1783 1784 if (!quiet) 1785 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1786 del = xycsc->xyc->xyc_rsetup; 1787 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1788 if (del == XY_ERR_FAIL) { 1789 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1790 retval = XY_ERR_FAIL; 1791 } 1792 if (xysc) 1793 xyc_xyreset(xycsc, xysc); 1794 1795 /* fix queues based on "blast-mode" */ 1796 1797 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1798 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1799 1800 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1801 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1802 XY_STATE(iorq->mode) != XY_SUB_NORM) 1803 /* is it active? */ 1804 continue; 1805 1806 if (blastmode == XY_RSET_ALL || 1807 blastmode != iorq) { 1808 /* failed */ 1809 iorq->errno = error; 1810 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1811 switch (XY_STATE(iorq->mode)) { 1812 case XY_SUB_NORM: 1813 iorq->buf->b_error = EIO; 1814 iorq->buf->b_flags |= B_ERROR; 1815 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1816 1817 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1818 iorq->dmamap->dm_mapsize, 1819 (iorq->buf->b_flags & B_READ) 1820 ? BUS_DMASYNC_POSTREAD 1821 : BUS_DMASYNC_POSTWRITE); 1822 1823 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1824 1825 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1826 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1827 (xycsc->reqs[lcv].buf->b_bcount - 1828 xycsc->reqs[lcv].buf->b_resid)); 1829 biodone(iorq->buf); 1830 iorq->mode = XY_SUB_FREE; 1831 break; 1832 case XY_SUB_WAIT: 1833 wakeup(iorq); 1834 case XY_SUB_POLL: 1835 iorq->mode = 1836 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1837 break; 1838 } 1839 1840 } else { 1841 1842 /* resubmit, no need to do anything here */ 1843 } 1844 } 1845 1846 /* 1847 * now, if stuff is waiting, start it. 1848 * since we just reset it should go 1849 */ 1850 xyc_start(xycsc, NULL); 1851 1852 return (retval); 1853 } 1854 1855 /* 1856 * xyc_start: start waiting buffers 1857 */ 1858 1859 void 1860 xyc_start(xycsc, iorq) 1861 struct xyc_softc *xycsc; 1862 struct xy_iorq *iorq; 1863 1864 { 1865 int lcv; 1866 struct xy_softc *xy; 1867 1868 if (iorq == NULL) { 1869 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1870 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1871 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1872 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1873 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1874 } 1875 } 1876 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1877 } 1878 1879 /* 1880 * xyc_remove_iorq: remove "done" IOPB's. 1881 */ 1882 1883 int 1884 xyc_remove_iorq(xycsc) 1885 struct xyc_softc *xycsc; 1886 1887 { 1888 int errno, rq, comm, errs; 1889 struct xyc *xyc = xycsc->xyc; 1890 u_long addr; 1891 struct xy_iopb *iopb; 1892 struct xy_iorq *iorq; 1893 struct buf *bp; 1894 1895 if (xyc->xyc_csr & XYC_DERR) { 1896 /* 1897 * DOUBLE ERROR: should never happen under normal use. This 1898 * error is so bad, you can't even tell which IOPB is bad, so 1899 * we dump them all. 1900 */ 1901 errno = XY_ERR_DERR; 1902 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1903 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1904 printf("%s: soft reset failed!\n", 1905 xycsc->sc_dev.dv_xname); 1906 panic("xyc_remove_iorq: controller DEAD"); 1907 } 1908 return (XY_ERR_AOK); 1909 } 1910 1911 /* 1912 * get iopb that is done, loop down the chain 1913 */ 1914 1915 if (xyc->xyc_csr & XYC_ERR) { 1916 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1917 } 1918 if (xyc->xyc_csr & XYC_IPND) { 1919 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1920 } 1921 1922 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1923 iorq = xycsc->xy_chain[rq]; 1924 if (iorq == NULL) break; /* done ! */ 1925 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1926 continue; /* free, or done */ 1927 iopb = iorq->iopb; 1928 if (iopb->done == 0) 1929 continue; /* not done yet */ 1930 1931 comm = iopb->com; 1932 errs = iopb->errs; 1933 1934 if (errs) 1935 iorq->errno = iopb->errno; 1936 else 1937 iorq->errno = 0; 1938 1939 /* handle non-fatal errors */ 1940 1941 if (errs && 1942 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1943 continue; /* AOK: we resubmitted it */ 1944 1945 1946 /* this iorq is now done (hasn't been restarted or anything) */ 1947 1948 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1949 xyc_perror(iorq, iopb, 0); 1950 1951 /* now, if read/write check to make sure we got all the data 1952 * we needed. (this may not be the case if we got an error in 1953 * the middle of a multisector request). */ 1954 1955 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1956 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1957 /* we just successfully processed a bad144 sector 1958 * note: if we are in bad 144 mode, the pointers have 1959 * been advanced already (see above) and are pointing 1960 * at the bad144 sector. to exit bad144 mode, we 1961 * must advance the pointers 1 sector and issue a new 1962 * request if there are still sectors left to process 1963 * 1964 */ 1965 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1966 1967 /* exit b144 mode */ 1968 iorq->mode = iorq->mode & (~XY_MODE_B144); 1969 1970 if (iorq->sectcnt) { /* more to go! */ 1971 iorq->lasterror = iorq->errno = iopb->errno = 0; 1972 iopb->errs = iopb->done = 0; 1973 iorq->tries = 0; 1974 iopb->scnt = iorq->sectcnt; 1975 iopb->cyl = iorq->blockno / 1976 iorq->xy->sectpercyl; 1977 iopb->head = 1978 (iorq->blockno / iorq->xy->nhead) % 1979 iorq->xy->nhead; 1980 iopb->sect = iorq->blockno % XYFM_BPS; 1981 addr = (u_long) iorq->dbuf; 1982 iopb->dataa = (addr & 0xffff); 1983 iopb->datar = ((addr & 0xff0000) >> 16); 1984 /* will resubit at end */ 1985 continue; 1986 } 1987 } 1988 /* final cleanup, totally done with this request */ 1989 1990 switch (XY_STATE(iorq->mode)) { 1991 case XY_SUB_NORM: 1992 bp = iorq->buf; 1993 if (errs) { 1994 bp->b_error = EIO; 1995 bp->b_flags |= B_ERROR; 1996 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1997 } else { 1998 bp->b_resid = 0; /* done */ 1999 } 2000 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2001 iorq->dmamap->dm_mapsize, 2002 (iorq->buf->b_flags & B_READ) 2003 ? BUS_DMASYNC_POSTREAD 2004 : BUS_DMASYNC_POSTWRITE); 2005 2006 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2007 2008 BUFQ_REMOVE(&iorq->xy->xyq, bp); 2009 disk_unbusy(&iorq->xy->sc_dk, 2010 (bp->b_bcount - bp->b_resid)); 2011 iorq->mode = XY_SUB_FREE; 2012 biodone(bp); 2013 break; 2014 case XY_SUB_WAIT: 2015 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2016 wakeup(iorq); 2017 break; 2018 case XY_SUB_POLL: 2019 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2020 break; 2021 } 2022 } 2023 2024 return (XY_ERR_AOK); 2025 } 2026 2027 /* 2028 * xyc_perror: print error. 2029 * - if still_trying is true: we got an error, retried and got a 2030 * different error. in that case lasterror is the old error, 2031 * and errno is the new one. 2032 * - if still_trying is not true, then if we ever had an error it 2033 * is in lasterror. also, if iorq->errno == 0, then we recovered 2034 * from that error (otherwise iorq->errno == iorq->lasterror). 2035 */ 2036 void 2037 xyc_perror(iorq, iopb, still_trying) 2038 struct xy_iorq *iorq; 2039 struct xy_iopb *iopb; 2040 int still_trying; 2041 2042 { 2043 2044 int error = iorq->lasterror; 2045 2046 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 2047 : iorq->xyc->sc_dev.dv_xname); 2048 if (iorq->buf) 2049 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2050 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2051 printf("%s %d/%d/%d: ", 2052 (iopb->com == XYCMD_RD) ? "read" : "write", 2053 iopb->cyl, iopb->head, iopb->sect); 2054 printf("%s", xyc_e2str(error)); 2055 2056 if (still_trying) 2057 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 2058 else 2059 if (iorq->errno == 0) 2060 printf(" [recovered in %d tries]", iorq->tries); 2061 2062 printf("\n"); 2063 } 2064 2065 /* 2066 * xyc_error: non-fatal error encountered... recover. 2067 * return AOK if resubmitted, return FAIL if this iopb is done 2068 */ 2069 int 2070 xyc_error(xycsc, iorq, iopb, comm) 2071 struct xyc_softc *xycsc; 2072 struct xy_iorq *iorq; 2073 struct xy_iopb *iopb; 2074 int comm; 2075 2076 { 2077 int errno = iorq->errno; 2078 int erract = xyc_entoact(errno); 2079 int oldmode, advance; 2080 #ifdef __sparc__ 2081 int i; 2082 #endif 2083 2084 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2085 oldmode = iorq->mode; 2086 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2087 /* make xyc_start ignore us */ 2088 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 2089 iorq->mode = oldmode; 2090 } 2091 /* check for read/write to a sector in bad144 table if bad: redirect 2092 * request to bad144 area */ 2093 2094 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2095 (iorq->mode & XY_MODE_B144) == 0) { 2096 advance = iorq->sectcnt - iopb->scnt; 2097 XYC_ADVANCE(iorq, advance); 2098 #ifdef __sparc__ 2099 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2100 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2101 iorq->blockno % iorq->xy->nsect)) != -1) { 2102 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2103 * redirect */ 2104 iopb->errno = iopb->done = iopb->errs = 0; 2105 iopb->scnt = 1; 2106 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2107 /* second to last acyl */ 2108 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2109 * standard */ 2110 iopb->head = i / iorq->xy->nhead; 2111 iopb->sect = i % iorq->xy->nhead; 2112 /* will resubmit when we come out of remove_iorq */ 2113 return (XY_ERR_AOK); /* recovered! */ 2114 } 2115 #endif 2116 } 2117 2118 /* 2119 * it isn't a bad144 sector, must be real error! see if we can retry 2120 * it? 2121 */ 2122 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2123 xyc_perror(iorq, iopb, 1); /* inform of error state 2124 * change */ 2125 iorq->lasterror = errno; 2126 2127 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2128 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2129 iorq->tries++; 2130 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2131 /* will resubmit at end of remove_iorq */ 2132 return (XY_ERR_AOK); /* recovered! */ 2133 } 2134 2135 /* failed to recover from this error */ 2136 return (XY_ERR_FAIL); 2137 } 2138 2139 /* 2140 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2141 */ 2142 void 2143 xyc_tick(arg) 2144 void *arg; 2145 2146 { 2147 struct xyc_softc *xycsc = arg; 2148 int lcv, s, reset = 0; 2149 2150 /* reduce ttl for each request if one goes to zero, reset xyc */ 2151 s = splbio(); 2152 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2153 if (xycsc->reqs[lcv].mode == 0 || 2154 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2155 continue; 2156 xycsc->reqs[lcv].ttl--; 2157 if (xycsc->reqs[lcv].ttl == 0) 2158 reset = 1; 2159 } 2160 if (reset) { 2161 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2162 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2163 } 2164 splx(s); 2165 2166 /* until next time */ 2167 2168 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2169 } 2170 2171 /* 2172 * xyc_ioctlcmd: this function provides a user level interface to the 2173 * controller via ioctl. this allows "format" programs to be written 2174 * in user code, and is also useful for some debugging. we return 2175 * an error code. called at user priority. 2176 * 2177 * XXX missing a few commands (see the 7053 driver for ideas) 2178 */ 2179 int 2180 xyc_ioctlcmd(xy, dev, xio) 2181 struct xy_softc *xy; 2182 dev_t dev; 2183 struct xd_iocmd *xio; 2184 2185 { 2186 int s, rqno, dummy = 0; 2187 caddr_t dvmabuf = NULL, buf = NULL; 2188 struct xyc_softc *xycsc; 2189 int rseg, error; 2190 bus_dma_segment_t seg; 2191 2192 /* check sanity of requested command */ 2193 2194 switch (xio->cmd) { 2195 2196 case XYCMD_NOP: /* no op: everything should be zero */ 2197 if (xio->subfn || xio->dptr || xio->dlen || 2198 xio->block || xio->sectcnt) 2199 return (EINVAL); 2200 break; 2201 2202 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2203 case XYCMD_WR: 2204 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2205 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2206 return (EINVAL); 2207 break; 2208 2209 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2210 return (EINVAL); 2211 2212 break; 2213 2214 default: 2215 return (EINVAL);/* ??? */ 2216 } 2217 2218 xycsc = xy->parent; 2219 2220 /* create DVMA buffer for request if needed */ 2221 if (xio->dlen) { 2222 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2223 &seg, &rseg, 2224 xio->dlen, &buf, 2225 (bus_addr_t *)&dvmabuf)) != 0) { 2226 return (error); 2227 } 2228 2229 if (xio->cmd == XYCMD_WR) { 2230 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2231 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2232 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2233 return (error); 2234 } 2235 } 2236 } 2237 /* do it! */ 2238 2239 error = 0; 2240 s = splbio(); 2241 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2242 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2243 if (rqno == XY_ERR_FAIL) { 2244 error = EIO; 2245 goto done; 2246 } 2247 xio->errno = xycsc->ciorq->errno; 2248 xio->tries = xycsc->ciorq->tries; 2249 XYC_DONE(xycsc, dummy); 2250 2251 if (xio->cmd == XYCMD_RD) 2252 error = copyout(buf, xio->dptr, xio->dlen); 2253 2254 done: 2255 splx(s); 2256 if (dvmabuf) { 2257 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2258 xio->dlen, buf); 2259 } 2260 return (error); 2261 } 2262 2263 /* 2264 * xyc_e2str: convert error code number into an error string 2265 */ 2266 char * 2267 xyc_e2str(no) 2268 int no; 2269 { 2270 switch (no) { 2271 case XY_ERR_FAIL: 2272 return ("Software fatal error"); 2273 case XY_ERR_DERR: 2274 return ("DOUBLE ERROR"); 2275 case XY_ERR_AOK: 2276 return ("Successful completion"); 2277 case XY_ERR_IPEN: 2278 return("Interrupt pending"); 2279 case XY_ERR_BCFL: 2280 return("Busy conflict"); 2281 case XY_ERR_TIMO: 2282 return("Operation timeout"); 2283 case XY_ERR_NHDR: 2284 return("Header not found"); 2285 case XY_ERR_HARD: 2286 return("Hard ECC error"); 2287 case XY_ERR_ICYL: 2288 return("Illegal cylinder address"); 2289 case XY_ERR_ISEC: 2290 return("Illegal sector address"); 2291 case XY_ERR_SMAL: 2292 return("Last sector too small"); 2293 case XY_ERR_SACK: 2294 return("Slave ACK error (non-existent memory)"); 2295 case XY_ERR_CHER: 2296 return("Cylinder and head/header error"); 2297 case XY_ERR_SRTR: 2298 return("Auto-seek retry successful"); 2299 case XY_ERR_WPRO: 2300 return("Write-protect error"); 2301 case XY_ERR_UIMP: 2302 return("Unimplemented command"); 2303 case XY_ERR_DNRY: 2304 return("Drive not ready"); 2305 case XY_ERR_SZER: 2306 return("Sector count zero"); 2307 case XY_ERR_DFLT: 2308 return("Drive faulted"); 2309 case XY_ERR_ISSZ: 2310 return("Illegal sector size"); 2311 case XY_ERR_SLTA: 2312 return("Self test A"); 2313 case XY_ERR_SLTB: 2314 return("Self test B"); 2315 case XY_ERR_SLTC: 2316 return("Self test C"); 2317 case XY_ERR_SOFT: 2318 return("Soft ECC error"); 2319 case XY_ERR_SFOK: 2320 return("Soft ECC error recovered"); 2321 case XY_ERR_IHED: 2322 return("Illegal head"); 2323 case XY_ERR_DSEQ: 2324 return("Disk sequencer error"); 2325 case XY_ERR_SEEK: 2326 return("Seek error"); 2327 default: 2328 return ("Unknown error"); 2329 } 2330 } 2331 2332 int 2333 xyc_entoact(errno) 2334 2335 int errno; 2336 2337 { 2338 switch (errno) { 2339 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2340 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2341 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2342 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2343 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2344 2345 return(XY_ERA_PROG); /* program error ! */ 2346 2347 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2348 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2349 case XY_ERR_SOFT: 2350 2351 return(XY_ERA_HARD); /* hard error, retry */ 2352 2353 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2354 2355 return(XY_ERA_RSET); /* hard error reset */ 2356 2357 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2358 2359 return(XY_ERA_SOFT); /* an FYI error */ 2360 2361 case XY_ERR_WPRO: 2362 2363 return(XY_ERA_WPRO); /* write protect */ 2364 } 2365 2366 return(XY_ERA_PROG); /* ??? */ 2367 } 2368
Indexes created Tue Sep 30 07:10:03 GMT 2025