xy.c revision 1.30
1 /* $NetBSD: xy.c,v 1.30 2000/07/24 15:00:41 scw 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_dmamap_load_raw(tag, map, 311 seg, nseg, len, BUS_DMA_NOWAIT)) != 0) { 312 bus_dmamem_free(tag, seg, nseg); 313 return (error); 314 } 315 316 if ((error = bus_dmamem_map(tag, seg, nseg, 317 len, kvap, 318 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 319 bus_dmamap_unload(tag, map); 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; 911 912 unit = DISKUNIT(dev); 913 914 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 915 return (ENXIO); 916 917 /* switch on ioctl type */ 918 919 switch (command) { 920 case DIOCSBAD: /* set bad144 info */ 921 if ((flag & FWRITE) == 0) 922 return EBADF; 923 s = splbio(); 924 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 925 splx(s); 926 return 0; 927 928 case DIOCGDINFO: /* get disk label */ 929 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 930 return 0; 931 932 case DIOCGPART: /* get partition info */ 933 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 934 ((struct partinfo *) addr)->part = 935 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 936 return 0; 937 938 case DIOCSDINFO: /* set disk label */ 939 if ((flag & FWRITE) == 0) 940 return EBADF; 941 error = setdisklabel(xy->sc_dk.dk_label, 942 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 943 xy->sc_dk.dk_cpulabel); 944 if (error == 0) { 945 if (xy->state == XY_DRIVE_NOLABEL) 946 xy->state = XY_DRIVE_ONLINE; 947 } 948 return error; 949 950 case DIOCWLABEL: /* change write status of disk label */ 951 if ((flag & FWRITE) == 0) 952 return EBADF; 953 if (*(int *) addr) 954 xy->flags |= XY_WLABEL; 955 else 956 xy->flags &= ~XY_WLABEL; 957 return 0; 958 959 case DIOCWDINFO: /* write disk label */ 960 if ((flag & FWRITE) == 0) 961 return EBADF; 962 error = setdisklabel(xy->sc_dk.dk_label, 963 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 964 xy->sc_dk.dk_cpulabel); 965 if (error == 0) { 966 if (xy->state == XY_DRIVE_NOLABEL) 967 xy->state = XY_DRIVE_ONLINE; 968 969 /* Simulate opening partition 0 so write succeeds. */ 970 xy->sc_dk.dk_openmask |= (1 << 0); 971 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 972 xystrategy, xy->sc_dk.dk_label, 973 xy->sc_dk.dk_cpulabel); 974 xy->sc_dk.dk_openmask = 975 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 976 } 977 return error; 978 979 case DIOSXDCMD: 980 xio = (struct xd_iocmd *) addr; 981 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 982 return (error); 983 return (xyc_ioctlcmd(xy, dev, xio)); 984 985 default: 986 return ENOTTY; 987 } 988 } 989 990 /* 991 * xyopen: open drive 992 */ 993 994 int 995 xyopen(dev, flag, fmt, p) 996 dev_t dev; 997 int flag, fmt; 998 struct proc *p; 999 { 1000 int unit, part; 1001 struct xy_softc *xy; 1002 struct xyc_attach_args xa; 1003 1004 /* first, could it be a valid target? */ 1005 1006 unit = DISKUNIT(dev); 1007 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 1008 return (ENXIO); 1009 part = DISKPART(dev); 1010 1011 /* do we need to attach the drive? */ 1012 1013 if (xy->state == XY_DRIVE_UNKNOWN) { 1014 xa.driveno = xy->xy_drive; 1015 xa.fullmode = XY_SUB_WAIT; 1016 xa.booting = 0; 1017 xyattach((struct device *) xy->parent, 1018 (struct device *) xy, &xa); 1019 if (xy->state == XY_DRIVE_UNKNOWN) { 1020 return (EIO); 1021 } 1022 } 1023 /* check for partition */ 1024 1025 if (part != RAW_PART && 1026 (part >= xy->sc_dk.dk_label->d_npartitions || 1027 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1028 return (ENXIO); 1029 } 1030 /* set open masks */ 1031 1032 switch (fmt) { 1033 case S_IFCHR: 1034 xy->sc_dk.dk_copenmask |= (1 << part); 1035 break; 1036 case S_IFBLK: 1037 xy->sc_dk.dk_bopenmask |= (1 << part); 1038 break; 1039 } 1040 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1041 1042 return 0; 1043 } 1044 1045 int 1046 xyread(dev, uio, flags) 1047 dev_t dev; 1048 struct uio *uio; 1049 int flags; 1050 { 1051 1052 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1053 } 1054 1055 int 1056 xywrite(dev, uio, flags) 1057 dev_t dev; 1058 struct uio *uio; 1059 int flags; 1060 { 1061 1062 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1063 } 1064 1065 1066 /* 1067 * xysize: return size of a partition for a dump 1068 */ 1069 1070 int 1071 xysize(dev) 1072 dev_t dev; 1073 1074 { 1075 struct xy_softc *xysc; 1076 int unit, part, size, omask; 1077 1078 /* valid unit? */ 1079 unit = DISKUNIT(dev); 1080 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1081 return (-1); 1082 1083 part = DISKPART(dev); 1084 omask = xysc->sc_dk.dk_openmask & (1 << part); 1085 1086 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1087 return (-1); 1088 1089 /* do it */ 1090 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1091 size = -1; /* only give valid size for swap partitions */ 1092 else 1093 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1094 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1095 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1096 return (-1); 1097 return (size); 1098 } 1099 1100 /* 1101 * xystrategy: buffering system interface to xy. 1102 */ 1103 1104 void 1105 xystrategy(bp) 1106 struct buf *bp; 1107 1108 { 1109 struct xy_softc *xy; 1110 int s, unit; 1111 struct xyc_attach_args xa; 1112 struct disklabel *lp; 1113 daddr_t blkno; 1114 1115 unit = DISKUNIT(bp->b_dev); 1116 1117 /* check for live device */ 1118 1119 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1120 bp->b_blkno < 0 || 1121 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1122 bp->b_error = EINVAL; 1123 goto bad; 1124 } 1125 /* do we need to attach the drive? */ 1126 1127 if (xy->state == XY_DRIVE_UNKNOWN) { 1128 xa.driveno = xy->xy_drive; 1129 xa.fullmode = XY_SUB_WAIT; 1130 xa.booting = 0; 1131 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1132 if (xy->state == XY_DRIVE_UNKNOWN) { 1133 bp->b_error = EIO; 1134 goto bad; 1135 } 1136 } 1137 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1138 /* no I/O to unlabeled disks, unless raw partition */ 1139 bp->b_error = EIO; 1140 goto bad; 1141 } 1142 /* short circuit zero length request */ 1143 1144 if (bp->b_bcount == 0) 1145 goto done; 1146 1147 /* check bounds with label (disksubr.c). Determine the size of the 1148 * transfer, and make sure it is within the boundaries of the 1149 * partition. Adjust transfer if needed, and signal errors or early 1150 * completion. */ 1151 1152 lp = xy->sc_dk.dk_label; 1153 1154 if (bounds_check_with_label(bp, lp, 1155 (xy->flags & XY_WLABEL) != 0) <= 0) 1156 goto done; 1157 1158 /* 1159 * Now convert the block number to absolute and put it in 1160 * terms of the device's logical block size. 1161 */ 1162 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1163 if (DISKPART(bp->b_dev) != RAW_PART) 1164 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1165 1166 bp->b_rawblkno = blkno; 1167 1168 /* 1169 * now we know we have a valid buf structure that we need to do I/O 1170 * on. 1171 */ 1172 s = splbio(); /* protect the queues */ 1173 1174 disksort_blkno(&xy->xyq, bp); 1175 1176 /* start 'em up */ 1177 1178 xyc_start(xy->parent, NULL); 1179 1180 /* done! */ 1181 1182 splx(s); 1183 return; 1184 1185 bad: /* tells upper layers we have an error */ 1186 bp->b_flags |= B_ERROR; 1187 done: /* tells upper layers we are done with this 1188 * buf */ 1189 bp->b_resid = bp->b_bcount; 1190 biodone(bp); 1191 } 1192 /* 1193 * end of {b,c}devsw functions 1194 */ 1195 1196 /* 1197 * i n t e r r u p t f u n c t i o n 1198 * 1199 * xycintr: hardware interrupt. 1200 */ 1201 int 1202 xycintr(v) 1203 void *v; 1204 1205 { 1206 struct xyc_softc *xycsc = v; 1207 1208 /* kick the event counter */ 1209 1210 xycsc->sc_intrcnt.ev_count++; 1211 1212 /* remove as many done IOPBs as possible */ 1213 1214 xyc_remove_iorq(xycsc); 1215 1216 /* start any iorq's already waiting */ 1217 1218 xyc_start(xycsc, NULL); 1219 1220 return (1); 1221 } 1222 /* 1223 * end of interrupt function 1224 */ 1225 1226 /* 1227 * i n t e r n a l f u n c t i o n s 1228 */ 1229 1230 /* 1231 * xyc_rqinit: fill out the fields of an I/O request 1232 */ 1233 1234 inline void 1235 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1236 struct xy_iorq *rq; 1237 struct xyc_softc *xyc; 1238 struct xy_softc *xy; 1239 int md; 1240 u_long blk; 1241 int cnt; 1242 caddr_t db; 1243 struct buf *bp; 1244 { 1245 rq->xyc = xyc; 1246 rq->xy = xy; 1247 rq->ttl = XYC_MAXTTL + 10; 1248 rq->mode = md; 1249 rq->tries = rq->errno = rq->lasterror = 0; 1250 rq->blockno = blk; 1251 rq->sectcnt = cnt; 1252 rq->dbuf = db; 1253 rq->buf = bp; 1254 } 1255 1256 /* 1257 * xyc_rqtopb: load up an IOPB based on an iorq 1258 */ 1259 1260 void 1261 xyc_rqtopb(iorq, iopb, cmd, subfun) 1262 struct xy_iorq *iorq; 1263 struct xy_iopb *iopb; 1264 int cmd, subfun; 1265 1266 { 1267 u_long block, dp; 1268 1269 /* normal IOPB case, standard stuff */ 1270 1271 /* chain bit handled later */ 1272 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1273 iopb->com = cmd; 1274 iopb->errno = 0; 1275 iopb->errs = 0; 1276 iopb->done = 0; 1277 if (iorq->xy) { 1278 iopb->unit = iorq->xy->xy_drive; 1279 iopb->dt = iorq->xy->drive_type; 1280 } else { 1281 iopb->unit = 0; 1282 iopb->dt = 0; 1283 } 1284 block = iorq->blockno; 1285 if (iorq->xy == NULL || block == 0) { 1286 iopb->sect = iopb->head = iopb->cyl = 0; 1287 } else { 1288 iopb->sect = block % iorq->xy->nsect; 1289 block = block / iorq->xy->nsect; 1290 iopb->head = block % iorq->xy->nhead; 1291 block = block / iorq->xy->nhead; 1292 iopb->cyl = block; 1293 } 1294 iopb->scnt = iorq->sectcnt; 1295 dp = (u_long) iorq->dbuf; 1296 if (iorq->dbuf == NULL) { 1297 iopb->dataa = 0; 1298 iopb->datar = 0; 1299 } else { 1300 iopb->dataa = (dp & 0xffff); 1301 iopb->datar = ((dp & 0xff0000) >> 16); 1302 } 1303 iopb->subfn = subfun; 1304 } 1305 1306 1307 /* 1308 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1309 */ 1310 1311 int 1312 xyc_unbusy(xyc, del) 1313 1314 struct xyc *xyc; 1315 int del; 1316 1317 { 1318 while (del-- > 0) { 1319 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1320 break; 1321 DELAY(1); 1322 } 1323 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1324 } 1325 1326 /* 1327 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1328 * note that NORM requests are handled seperately. 1329 */ 1330 int 1331 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1332 struct xyc_softc *xycsc; 1333 int cmd, subfn, unit, block, scnt; 1334 char *dptr; 1335 int fullmode; 1336 1337 { 1338 int submode = XY_STATE(fullmode); 1339 struct xy_iorq *iorq = xycsc->ciorq; 1340 struct xy_iopb *iopb = xycsc->ciopb; 1341 1342 /* 1343 * is someone else using the control iopq wait for it if we can 1344 */ 1345 start: 1346 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1347 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1348 return(XY_ERR_FAIL); 1349 goto start; 1350 } 1351 1352 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1353 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1354 iorq->mode = XY_SUB_FREE; 1355 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1356 } 1357 1358 /* init iorq/iopb */ 1359 1360 xyc_rqinit(iorq, xycsc, 1361 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1362 fullmode, block, scnt, dptr, NULL); 1363 1364 /* load IOPB from iorq */ 1365 1366 xyc_rqtopb(iorq, iopb, cmd, subfn); 1367 1368 /* submit it for processing */ 1369 1370 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1371 1372 return(XY_ERR_AOK); 1373 } 1374 1375 /* 1376 * xyc_startbuf 1377 * start a buffer for running 1378 */ 1379 1380 int 1381 xyc_startbuf(xycsc, xysc, bp) 1382 struct xyc_softc *xycsc; 1383 struct xy_softc *xysc; 1384 struct buf *bp; 1385 1386 { 1387 int partno, error; 1388 struct xy_iorq *iorq; 1389 struct xy_iopb *iopb; 1390 u_long block; 1391 1392 iorq = xysc->xyrq; 1393 iopb = iorq->iopb; 1394 1395 /* get buf */ 1396 1397 if (bp == NULL) 1398 panic("xyc_startbuf null buf"); 1399 1400 partno = DISKPART(bp->b_dev); 1401 #ifdef XYC_DEBUG 1402 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1403 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1404 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1405 bp->b_bcount, bp->b_data); 1406 #endif 1407 1408 /* 1409 * load request. 1410 * 1411 * note that iorq points to the buffer as mapped into DVMA space, 1412 * where as the bp->b_data points to its non-DVMA mapping. 1413 */ 1414 1415 block = bp->b_rawblkno; 1416 1417 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1418 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1419 if (error != 0) { 1420 printf("%s: warning: cannot load DMA map\n", 1421 xycsc->sc_dev.dv_xname); 1422 return (XY_ERR_FAIL); /* XXX: need some sort of 1423 * call-back scheme here? */ 1424 } 1425 1426 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1427 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1428 ? BUS_DMASYNC_PREREAD 1429 : BUS_DMASYNC_PREWRITE); 1430 1431 /* init iorq and load iopb from it */ 1432 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1433 bp->b_bcount / XYFM_BPS, 1434 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1435 bp); 1436 1437 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1438 1439 /* Instrumentation. */ 1440 disk_busy(&xysc->sc_dk); 1441 1442 return (XY_ERR_AOK); 1443 } 1444 1445 1446 /* 1447 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1448 * if ok. if it fail returns an error code. type is XY_SUB_*. 1449 * 1450 * note: caller frees iorq in all cases except NORM 1451 * 1452 * return value: 1453 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1454 * WAIT: XY_AOK (success), <error-code> (failed) 1455 * POLL: <same as WAIT> 1456 * NOQ : <same as NORM> 1457 * 1458 * there are three sources for i/o requests: 1459 * [1] xystrategy: normal block I/O, using "struct buf" system. 1460 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1461 * [3] open/ioctl: these are I/O requests done in the context of a process, 1462 * and the process should block until they are done. 1463 * 1464 * software state is stored in the iorq structure. each iorq has an 1465 * iopb structure. the hardware understands the iopb structure. 1466 * every command must go through an iopb. a 450 handles one iopb at a 1467 * time, where as a 451 can take them in chains. [the 450 claims it 1468 * can handle chains, but is appears to be buggy...] iopb are allocated 1469 * in DVMA space at boot up time. each disk gets one iopb, and the 1470 * controller gets one (for POLL and WAIT commands). what happens if 1471 * the iopb is busy? for i/o type [1], the buffers are queued at the 1472 * "buff" layer and * picked up later by the interrupt routine. for case 1473 * [2] we can only be blocked if there is a WAIT type I/O request being 1474 * run. since this can only happen when we are crashing, we wait a sec 1475 * and then steal the IOPB. for case [3] the process can sleep 1476 * on the iorq free list until some iopbs are avaliable. 1477 */ 1478 1479 1480 int 1481 xyc_submit_iorq(xycsc, iorq, type) 1482 struct xyc_softc *xycsc; 1483 struct xy_iorq *iorq; 1484 int type; 1485 1486 { 1487 struct xy_iopb *dmaiopb; 1488 1489 #ifdef XYC_DEBUG 1490 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1491 xycsc->sc_dev.dv_xname, iorq, type); 1492 #endif 1493 1494 /* first check and see if controller is busy */ 1495 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1496 #ifdef XYC_DEBUG 1497 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1498 #endif 1499 if (type == XY_SUB_NOQ) 1500 return (XY_ERR_FAIL); /* failed */ 1501 switch (type) { 1502 case XY_SUB_NORM: 1503 return XY_ERR_AOK; /* success */ 1504 case XY_SUB_WAIT: 1505 while (iorq->iopb->done == 0) { 1506 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1507 } 1508 return (iorq->errno); 1509 case XY_SUB_POLL: /* steal controller */ 1510 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1511 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1512 panic("xyc_submit_iorq: stuck xyc"); 1513 printf("%s: stole controller\n", 1514 xycsc->sc_dev.dv_xname); 1515 break; 1516 default: 1517 panic("xyc_submit_iorq adding"); 1518 } 1519 } 1520 1521 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1522 if (dmaiopb == NULL) { /* nothing doing? */ 1523 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1524 return(XY_ERR_AOK); 1525 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1526 } 1527 1528 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1529 1530 /* command now running, wrap it up */ 1531 switch (type) { 1532 case XY_SUB_NORM: 1533 case XY_SUB_NOQ: 1534 return (XY_ERR_AOK); /* success */ 1535 case XY_SUB_WAIT: 1536 while (iorq->iopb->done == 0) { 1537 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1538 } 1539 return (iorq->errno); 1540 case XY_SUB_POLL: 1541 return (xyc_piodriver(xycsc, iorq)); 1542 default: 1543 panic("xyc_submit_iorq wrap up"); 1544 } 1545 panic("xyc_submit_iorq"); 1546 return 0; /* not reached */ 1547 } 1548 1549 1550 /* 1551 * xyc_chain: build a chain. return dvma address of first element in 1552 * the chain. iorq != NULL: means we only want that item on the chain. 1553 */ 1554 1555 struct xy_iopb * 1556 xyc_chain(xycsc, iorq) 1557 struct xyc_softc *xycsc; 1558 struct xy_iorq *iorq; 1559 1560 { 1561 int togo, chain, hand; 1562 1563 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1564 1565 /* 1566 * promote control IOPB to the top 1567 */ 1568 if (iorq == NULL) { 1569 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1570 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1571 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1572 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1573 } 1574 1575 /* 1576 * special case: if iorq != NULL then we have a POLL or WAIT request. 1577 * we let these take priority and do them first. 1578 */ 1579 if (iorq) { 1580 xycsc->xy_chain[0] = iorq; 1581 iorq->iopb->chen = 0; 1582 return(iorq->dmaiopb); 1583 } 1584 1585 /* 1586 * NORM case: do round robin and maybe chain (if allowed and possible) 1587 */ 1588 chain = 0; 1589 hand = xycsc->xy_hand; 1590 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1591 1592 for (togo = XYC_MAXIOPB; togo > 0; 1593 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1594 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1595 1596 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1597 xycsc->iopbase[hand].done) 1598 continue; /* not ready-for-i/o */ 1599 1600 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1601 iopb = xycsc->xy_chain[chain]->iopb; 1602 iopb->chen = 0; 1603 if (chain != 0) { 1604 /* adding a link to a chain */ 1605 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1606 prev_iopb->chen = 1; 1607 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1608 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1609 } else { 1610 /* head of chain */ 1611 iorq = xycsc->xy_chain[chain]; 1612 } 1613 chain++; 1614 1615 /* quit if chaining dis-allowed */ 1616 if (xycsc->no_ols) 1617 break; 1618 } 1619 1620 return(iorq ? iorq->dmaiopb : NULL); 1621 } 1622 1623 /* 1624 * xyc_piodriver 1625 * 1626 * programmed i/o driver. this function takes over the computer 1627 * and drains off the polled i/o request. it returns the status of the iorq 1628 * the caller is interesting in. 1629 */ 1630 int 1631 xyc_piodriver(xycsc, iorq) 1632 struct xyc_softc *xycsc; 1633 struct xy_iorq *iorq; 1634 1635 { 1636 int nreset = 0; 1637 int retval = 0; 1638 u_long res; 1639 #ifdef XYC_DEBUG 1640 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1641 #endif 1642 1643 while (iorq->iopb->done == 0) { 1644 1645 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1646 1647 /* we expect some progress soon */ 1648 if (res == XY_ERR_FAIL && nreset >= 2) { 1649 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1650 #ifdef XYC_DEBUG 1651 printf("xyc_piodriver: timeout\n"); 1652 #endif 1653 return (XY_ERR_FAIL); 1654 } 1655 if (res == XY_ERR_FAIL) { 1656 if (xyc_reset(xycsc, 0, 1657 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1658 XY_ERR_FAIL, 1659 0) == XY_ERR_FAIL) 1660 return (XY_ERR_FAIL); /* flushes all but POLL 1661 * requests, resets */ 1662 continue; 1663 } 1664 1665 xyc_remove_iorq(xycsc); /* may resubmit request */ 1666 1667 if (iorq->iopb->done == 0) 1668 xyc_start(xycsc, iorq); 1669 } 1670 1671 /* get return value */ 1672 1673 retval = iorq->errno; 1674 1675 #ifdef XYC_DEBUG 1676 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1677 iorq->errno, xyc_e2str(iorq->errno)); 1678 #endif 1679 1680 /* start up any bufs that have queued */ 1681 1682 xyc_start(xycsc, NULL); 1683 1684 return (retval); 1685 } 1686 1687 /* 1688 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1689 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1690 */ 1691 void 1692 xyc_xyreset(xycsc, xysc) 1693 struct xyc_softc *xycsc; 1694 struct xy_softc *xysc; 1695 1696 { 1697 struct xy_iopb tmpiopb; 1698 struct xy_iopb *iopb; 1699 int del; 1700 1701 iopb = xycsc->ciopb; 1702 1703 /* Save contents */ 1704 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1705 1706 iopb->chen = iopb->done = iopb->errs = 0; 1707 iopb->ien = 0; 1708 iopb->com = XYCMD_RST; 1709 iopb->unit = xysc->xy_drive; 1710 1711 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1712 1713 del = XYC_RESETUSEC; 1714 while (del > 0) { 1715 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1716 break; 1717 DELAY(1); 1718 del--; 1719 } 1720 1721 if (del <= 0 || iopb->errs) { 1722 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1723 xyc_e2str(iopb->errno)); 1724 del = xycsc->xyc->xyc_rsetup; 1725 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1726 panic("xyc_reset"); 1727 } else { 1728 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1729 } 1730 1731 /* Restore contents */ 1732 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1733 } 1734 1735 1736 /* 1737 * xyc_reset: reset everything: requests are marked as errors except 1738 * a polled request (which is resubmitted) 1739 */ 1740 int 1741 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1742 struct xyc_softc *xycsc; 1743 int quiet, error; 1744 struct xy_iorq *blastmode; 1745 struct xy_softc *xysc; 1746 1747 { 1748 int del = 0, lcv, retval = XY_ERR_AOK; 1749 1750 /* soft reset hardware */ 1751 1752 if (!quiet) 1753 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1754 del = xycsc->xyc->xyc_rsetup; 1755 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1756 if (del == XY_ERR_FAIL) { 1757 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1758 retval = XY_ERR_FAIL; 1759 } 1760 if (xysc) 1761 xyc_xyreset(xycsc, xysc); 1762 1763 /* fix queues based on "blast-mode" */ 1764 1765 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1766 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1767 1768 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1769 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1770 XY_STATE(iorq->mode) != XY_SUB_NORM) 1771 /* is it active? */ 1772 continue; 1773 1774 if (blastmode == XY_RSET_ALL || 1775 blastmode != iorq) { 1776 /* failed */ 1777 iorq->errno = error; 1778 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1779 switch (XY_STATE(iorq->mode)) { 1780 case XY_SUB_NORM: 1781 iorq->buf->b_error = EIO; 1782 iorq->buf->b_flags |= B_ERROR; 1783 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1784 1785 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1786 iorq->dmamap->dm_mapsize, 1787 (iorq->buf->b_flags & B_READ) 1788 ? BUS_DMASYNC_POSTREAD 1789 : BUS_DMASYNC_POSTWRITE); 1790 1791 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1792 1793 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1794 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1795 (xycsc->reqs[lcv].buf->b_bcount - 1796 xycsc->reqs[lcv].buf->b_resid)); 1797 biodone(iorq->buf); 1798 iorq->mode = XY_SUB_FREE; 1799 break; 1800 case XY_SUB_WAIT: 1801 wakeup(iorq); 1802 case XY_SUB_POLL: 1803 iorq->mode = 1804 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1805 break; 1806 } 1807 1808 } else { 1809 1810 /* resubmit, no need to do anything here */ 1811 } 1812 } 1813 1814 /* 1815 * now, if stuff is waiting, start it. 1816 * since we just reset it should go 1817 */ 1818 xyc_start(xycsc, NULL); 1819 1820 return (retval); 1821 } 1822 1823 /* 1824 * xyc_start: start waiting buffers 1825 */ 1826 1827 void 1828 xyc_start(xycsc, iorq) 1829 struct xyc_softc *xycsc; 1830 struct xy_iorq *iorq; 1831 1832 { 1833 int lcv; 1834 struct xy_softc *xy; 1835 1836 if (iorq == NULL) { 1837 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1838 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1839 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1840 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1841 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1842 } 1843 } 1844 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1845 } 1846 1847 /* 1848 * xyc_remove_iorq: remove "done" IOPB's. 1849 */ 1850 1851 int 1852 xyc_remove_iorq(xycsc) 1853 struct xyc_softc *xycsc; 1854 1855 { 1856 int errno, rq, comm, errs; 1857 struct xyc *xyc = xycsc->xyc; 1858 u_long addr; 1859 struct xy_iopb *iopb; 1860 struct xy_iorq *iorq; 1861 struct buf *bp; 1862 1863 if (xyc->xyc_csr & XYC_DERR) { 1864 /* 1865 * DOUBLE ERROR: should never happen under normal use. This 1866 * error is so bad, you can't even tell which IOPB is bad, so 1867 * we dump them all. 1868 */ 1869 errno = XY_ERR_DERR; 1870 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1871 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1872 printf("%s: soft reset failed!\n", 1873 xycsc->sc_dev.dv_xname); 1874 panic("xyc_remove_iorq: controller DEAD"); 1875 } 1876 return (XY_ERR_AOK); 1877 } 1878 1879 /* 1880 * get iopb that is done, loop down the chain 1881 */ 1882 1883 if (xyc->xyc_csr & XYC_ERR) { 1884 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1885 } 1886 if (xyc->xyc_csr & XYC_IPND) { 1887 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1888 } 1889 1890 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1891 iorq = xycsc->xy_chain[rq]; 1892 if (iorq == NULL) break; /* done ! */ 1893 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1894 continue; /* free, or done */ 1895 iopb = iorq->iopb; 1896 if (iopb->done == 0) 1897 continue; /* not done yet */ 1898 1899 comm = iopb->com; 1900 errs = iopb->errs; 1901 1902 if (errs) 1903 iorq->errno = iopb->errno; 1904 else 1905 iorq->errno = 0; 1906 1907 /* handle non-fatal errors */ 1908 1909 if (errs && 1910 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1911 continue; /* AOK: we resubmitted it */ 1912 1913 1914 /* this iorq is now done (hasn't been restarted or anything) */ 1915 1916 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1917 xyc_perror(iorq, iopb, 0); 1918 1919 /* now, if read/write check to make sure we got all the data 1920 * we needed. (this may not be the case if we got an error in 1921 * the middle of a multisector request). */ 1922 1923 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1924 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1925 /* we just successfully processed a bad144 sector 1926 * note: if we are in bad 144 mode, the pointers have 1927 * been advanced already (see above) and are pointing 1928 * at the bad144 sector. to exit bad144 mode, we 1929 * must advance the pointers 1 sector and issue a new 1930 * request if there are still sectors left to process 1931 * 1932 */ 1933 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1934 1935 /* exit b144 mode */ 1936 iorq->mode = iorq->mode & (~XY_MODE_B144); 1937 1938 if (iorq->sectcnt) { /* more to go! */ 1939 iorq->lasterror = iorq->errno = iopb->errno = 0; 1940 iopb->errs = iopb->done = 0; 1941 iorq->tries = 0; 1942 iopb->scnt = iorq->sectcnt; 1943 iopb->cyl = iorq->blockno / 1944 iorq->xy->sectpercyl; 1945 iopb->head = 1946 (iorq->blockno / iorq->xy->nhead) % 1947 iorq->xy->nhead; 1948 iopb->sect = iorq->blockno % XYFM_BPS; 1949 addr = (u_long) iorq->dbuf; 1950 iopb->dataa = (addr & 0xffff); 1951 iopb->datar = ((addr & 0xff0000) >> 16); 1952 /* will resubit at end */ 1953 continue; 1954 } 1955 } 1956 /* final cleanup, totally done with this request */ 1957 1958 switch (XY_STATE(iorq->mode)) { 1959 case XY_SUB_NORM: 1960 bp = iorq->buf; 1961 if (errs) { 1962 bp->b_error = EIO; 1963 bp->b_flags |= B_ERROR; 1964 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1965 } else { 1966 bp->b_resid = 0; /* done */ 1967 } 1968 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1969 iorq->dmamap->dm_mapsize, 1970 (iorq->buf->b_flags & B_READ) 1971 ? BUS_DMASYNC_POSTREAD 1972 : BUS_DMASYNC_POSTWRITE); 1973 1974 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1975 1976 BUFQ_REMOVE(&iorq->xy->xyq, bp); 1977 disk_unbusy(&iorq->xy->sc_dk, 1978 (bp->b_bcount - bp->b_resid)); 1979 iorq->mode = XY_SUB_FREE; 1980 biodone(bp); 1981 break; 1982 case XY_SUB_WAIT: 1983 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1984 wakeup(iorq); 1985 break; 1986 case XY_SUB_POLL: 1987 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1988 break; 1989 } 1990 } 1991 1992 return (XY_ERR_AOK); 1993 } 1994 1995 /* 1996 * xyc_perror: print error. 1997 * - if still_trying is true: we got an error, retried and got a 1998 * different error. in that case lasterror is the old error, 1999 * and errno is the new one. 2000 * - if still_trying is not true, then if we ever had an error it 2001 * is in lasterror. also, if iorq->errno == 0, then we recovered 2002 * from that error (otherwise iorq->errno == iorq->lasterror). 2003 */ 2004 void 2005 xyc_perror(iorq, iopb, still_trying) 2006 struct xy_iorq *iorq; 2007 struct xy_iopb *iopb; 2008 int still_trying; 2009 2010 { 2011 2012 int error = iorq->lasterror; 2013 2014 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 2015 : iorq->xyc->sc_dev.dv_xname); 2016 if (iorq->buf) 2017 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2018 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2019 printf("%s %d/%d/%d: ", 2020 (iopb->com == XYCMD_RD) ? "read" : "write", 2021 iopb->cyl, iopb->head, iopb->sect); 2022 printf("%s", xyc_e2str(error)); 2023 2024 if (still_trying) 2025 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 2026 else 2027 if (iorq->errno == 0) 2028 printf(" [recovered in %d tries]", iorq->tries); 2029 2030 printf("\n"); 2031 } 2032 2033 /* 2034 * xyc_error: non-fatal error encountered... recover. 2035 * return AOK if resubmitted, return FAIL if this iopb is done 2036 */ 2037 int 2038 xyc_error(xycsc, iorq, iopb, comm) 2039 struct xyc_softc *xycsc; 2040 struct xy_iorq *iorq; 2041 struct xy_iopb *iopb; 2042 int comm; 2043 2044 { 2045 int errno = iorq->errno; 2046 int erract = xyc_entoact(errno); 2047 int oldmode, advance; 2048 #ifdef __sparc__ 2049 int i; 2050 #endif 2051 2052 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2053 oldmode = iorq->mode; 2054 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2055 /* make xyc_start ignore us */ 2056 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 2057 iorq->mode = oldmode; 2058 } 2059 /* check for read/write to a sector in bad144 table if bad: redirect 2060 * request to bad144 area */ 2061 2062 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2063 (iorq->mode & XY_MODE_B144) == 0) { 2064 advance = iorq->sectcnt - iopb->scnt; 2065 XYC_ADVANCE(iorq, advance); 2066 #ifdef __sparc__ 2067 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2068 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2069 iorq->blockno % iorq->xy->nsect)) != -1) { 2070 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2071 * redirect */ 2072 iopb->errno = iopb->done = iopb->errs = 0; 2073 iopb->scnt = 1; 2074 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2075 /* second to last acyl */ 2076 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2077 * standard */ 2078 iopb->head = i / iorq->xy->nhead; 2079 iopb->sect = i % iorq->xy->nhead; 2080 /* will resubmit when we come out of remove_iorq */ 2081 return (XY_ERR_AOK); /* recovered! */ 2082 } 2083 #endif 2084 } 2085 2086 /* 2087 * it isn't a bad144 sector, must be real error! see if we can retry 2088 * it? 2089 */ 2090 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2091 xyc_perror(iorq, iopb, 1); /* inform of error state 2092 * change */ 2093 iorq->lasterror = errno; 2094 2095 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2096 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2097 iorq->tries++; 2098 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2099 /* will resubmit at end of remove_iorq */ 2100 return (XY_ERR_AOK); /* recovered! */ 2101 } 2102 2103 /* failed to recover from this error */ 2104 return (XY_ERR_FAIL); 2105 } 2106 2107 /* 2108 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2109 */ 2110 void 2111 xyc_tick(arg) 2112 void *arg; 2113 2114 { 2115 struct xyc_softc *xycsc = arg; 2116 int lcv, s, reset = 0; 2117 2118 /* reduce ttl for each request if one goes to zero, reset xyc */ 2119 s = splbio(); 2120 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2121 if (xycsc->reqs[lcv].mode == 0 || 2122 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2123 continue; 2124 xycsc->reqs[lcv].ttl--; 2125 if (xycsc->reqs[lcv].ttl == 0) 2126 reset = 1; 2127 } 2128 if (reset) { 2129 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2130 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2131 } 2132 splx(s); 2133 2134 /* until next time */ 2135 2136 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2137 } 2138 2139 /* 2140 * xyc_ioctlcmd: this function provides a user level interface to the 2141 * controller via ioctl. this allows "format" programs to be written 2142 * in user code, and is also useful for some debugging. we return 2143 * an error code. called at user priority. 2144 * 2145 * XXX missing a few commands (see the 7053 driver for ideas) 2146 */ 2147 int 2148 xyc_ioctlcmd(xy, dev, xio) 2149 struct xy_softc *xy; 2150 dev_t dev; 2151 struct xd_iocmd *xio; 2152 2153 { 2154 int s, rqno, dummy = 0; 2155 caddr_t dvmabuf = NULL, buf = NULL; 2156 struct xyc_softc *xycsc; 2157 int rseg, error; 2158 bus_dma_segment_t seg; 2159 2160 /* check sanity of requested command */ 2161 2162 switch (xio->cmd) { 2163 2164 case XYCMD_NOP: /* no op: everything should be zero */ 2165 if (xio->subfn || xio->dptr || xio->dlen || 2166 xio->block || xio->sectcnt) 2167 return (EINVAL); 2168 break; 2169 2170 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2171 case XYCMD_WR: 2172 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2173 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2174 return (EINVAL); 2175 break; 2176 2177 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2178 return (EINVAL); 2179 2180 break; 2181 2182 default: 2183 return (EINVAL);/* ??? */ 2184 } 2185 2186 xycsc = xy->parent; 2187 2188 /* create DVMA buffer for request if needed */ 2189 if (xio->dlen) { 2190 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2191 &seg, &rseg, 2192 xio->dlen, &buf, 2193 (bus_addr_t *)&dvmabuf)) != 0) { 2194 return (error); 2195 } 2196 2197 if (xio->cmd == XYCMD_WR) { 2198 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2199 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2200 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2201 return (error); 2202 } 2203 } 2204 } 2205 /* do it! */ 2206 2207 error = 0; 2208 s = splbio(); 2209 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2210 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2211 if (rqno == XY_ERR_FAIL) { 2212 error = EIO; 2213 goto done; 2214 } 2215 xio->errno = xycsc->ciorq->errno; 2216 xio->tries = xycsc->ciorq->tries; 2217 XYC_DONE(xycsc, dummy); 2218 2219 if (xio->cmd == XYCMD_RD) 2220 error = copyout(buf, xio->dptr, xio->dlen); 2221 2222 done: 2223 splx(s); 2224 if (dvmabuf) { 2225 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2226 xio->dlen, buf); 2227 } 2228 return (error); 2229 } 2230 2231 /* 2232 * xyc_e2str: convert error code number into an error string 2233 */ 2234 char * 2235 xyc_e2str(no) 2236 int no; 2237 { 2238 switch (no) { 2239 case XY_ERR_FAIL: 2240 return ("Software fatal error"); 2241 case XY_ERR_DERR: 2242 return ("DOUBLE ERROR"); 2243 case XY_ERR_AOK: 2244 return ("Successful completion"); 2245 case XY_ERR_IPEN: 2246 return("Interrupt pending"); 2247 case XY_ERR_BCFL: 2248 return("Busy conflict"); 2249 case XY_ERR_TIMO: 2250 return("Operation timeout"); 2251 case XY_ERR_NHDR: 2252 return("Header not found"); 2253 case XY_ERR_HARD: 2254 return("Hard ECC error"); 2255 case XY_ERR_ICYL: 2256 return("Illegal cylinder address"); 2257 case XY_ERR_ISEC: 2258 return("Illegal sector address"); 2259 case XY_ERR_SMAL: 2260 return("Last sector too small"); 2261 case XY_ERR_SACK: 2262 return("Slave ACK error (non-existent memory)"); 2263 case XY_ERR_CHER: 2264 return("Cylinder and head/header error"); 2265 case XY_ERR_SRTR: 2266 return("Auto-seek retry successful"); 2267 case XY_ERR_WPRO: 2268 return("Write-protect error"); 2269 case XY_ERR_UIMP: 2270 return("Unimplemented command"); 2271 case XY_ERR_DNRY: 2272 return("Drive not ready"); 2273 case XY_ERR_SZER: 2274 return("Sector count zero"); 2275 case XY_ERR_DFLT: 2276 return("Drive faulted"); 2277 case XY_ERR_ISSZ: 2278 return("Illegal sector size"); 2279 case XY_ERR_SLTA: 2280 return("Self test A"); 2281 case XY_ERR_SLTB: 2282 return("Self test B"); 2283 case XY_ERR_SLTC: 2284 return("Self test C"); 2285 case XY_ERR_SOFT: 2286 return("Soft ECC error"); 2287 case XY_ERR_SFOK: 2288 return("Soft ECC error recovered"); 2289 case XY_ERR_IHED: 2290 return("Illegal head"); 2291 case XY_ERR_DSEQ: 2292 return("Disk sequencer error"); 2293 case XY_ERR_SEEK: 2294 return("Seek error"); 2295 default: 2296 return ("Unknown error"); 2297 } 2298 } 2299 2300 int 2301 xyc_entoact(errno) 2302 2303 int errno; 2304 2305 { 2306 switch (errno) { 2307 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2308 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2309 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2310 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2311 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2312 2313 return(XY_ERA_PROG); /* program error ! */ 2314 2315 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2316 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2317 case XY_ERR_SOFT: 2318 2319 return(XY_ERA_HARD); /* hard error, retry */ 2320 2321 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2322 2323 return(XY_ERA_RSET); /* hard error reset */ 2324 2325 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2326 2327 return(XY_ERA_SOFT); /* an FYI error */ 2328 2329 case XY_ERR_WPRO: 2330 2331 return(XY_ERA_WPRO); /* write protect */ 2332 } 2333 2334 return(XY_ERA_PROG); /* ??? */ 2335 } 2336
Indexes created Tue Sep 30 11:09:46 GMT 2025