xy.c revision 1.61.10.2
1 /* $NetBSD: xy.c,v 1.61.10.2 2006/03/10 14:39:03 elad Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x y . c x y l o g i c s 4 5 0 / 4 5 1 s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.61.10.2 2006/03/10 14:39:03 elad Exp $"); 55 56 #undef XYC_DEBUG /* full debug */ 57 #undef XYC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 59 #define XYC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/syslog.h> 77 #include <sys/dkbad.h> 78 #include <sys/conf.h> 79 80 #include <machine/bus.h> 81 #include <machine/intr.h> 82 83 #if defined(__sparc__) || defined(sun3) 84 #include <dev/sun/disklabel.h> 85 #endif 86 87 #include <dev/vme/vmereg.h> 88 #include <dev/vme/vmevar.h> 89 90 #include <dev/vme/xyreg.h> 91 #include <dev/vme/xyvar.h> 92 #include <dev/vme/xio.h> 93 94 #include "locators.h" 95 96 /* 97 * macros 98 */ 99 100 /* 101 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 102 */ 103 #define XYC_GO(XYC, ADDR) { \ 104 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 107 (ADDR) = ((ADDR) >> 8); \ 108 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 109 (ADDR) = ((ADDR) >> 8); \ 110 (XYC)->xyc_reloc_hi = (ADDR); \ 111 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 112 } 113 114 /* 115 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 116 */ 117 118 #define XYC_DONE(SC,ER) { \ 119 if ((ER) == XY_ERR_AOK) { \ 120 (ER) = (SC)->ciorq->errno; \ 121 (SC)->ciorq->mode = XY_SUB_FREE; \ 122 wakeup((SC)->ciorq); \ 123 } \ 124 } 125 126 /* 127 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 128 */ 129 130 #define XYC_ADVANCE(IORQ, N) { \ 131 if (N) { \ 132 (IORQ)->sectcnt -= (N); \ 133 (IORQ)->blockno += (N); \ 134 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 135 } \ 136 } 137 138 /* 139 * note - addresses you can sleep on: 140 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 141 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 142 */ 143 144 145 /* 146 * function prototypes 147 * "xyc_*" functions are internal, all others are external interfaces 148 */ 149 150 extern int pil_to_vme[]; /* from obio.c */ 151 152 /* internals */ 153 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 154 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 155 const char *xyc_e2str(int); 156 int xyc_entoact(int); 157 int xyc_error(struct xyc_softc *, struct xy_iorq *, 158 struct xy_iopb *, int); 159 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 160 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 161 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 162 int xyc_remove_iorq(struct xyc_softc *); 163 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 164 struct xy_softc *); 165 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, 166 struct xy_softc *, int, u_long, int, 167 caddr_t, struct buf *); 168 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 169 void xyc_start(struct xyc_softc *, struct xy_iorq *); 170 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 171 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 172 void xyc_tick(void *); 173 int xyc_unbusy(struct xyc *, int); 174 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 175 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 176 int *, bus_size_t, caddr_t *, bus_addr_t *); 177 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 178 int, bus_size_t, caddr_t); 179 180 /* machine interrupt hook */ 181 int xycintr(void *); 182 183 /* autoconf */ 184 int xycmatch(struct device *, struct cfdata *, void *); 185 void xycattach(struct device *, struct device *, void *); 186 int xymatch(struct device *, struct cfdata *, void *); 187 void xyattach(struct device *, struct device *, void *); 188 static int xyc_probe(void *, bus_space_tag_t, bus_space_handle_t); 189 190 static void xydummystrat(struct buf *); 191 int xygetdisklabel(struct xy_softc *, void *); 192 193 /* 194 * cfattach's: device driver interface to autoconfig 195 */ 196 197 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 198 xycmatch, xycattach, NULL, NULL); 199 200 CFATTACH_DECL(xy, sizeof(struct xy_softc), 201 xymatch, xyattach, NULL, NULL); 202 203 extern struct cfdriver xy_cd; 204 205 dev_type_open(xyopen); 206 dev_type_close(xyclose); 207 dev_type_read(xyread); 208 dev_type_write(xywrite); 209 dev_type_ioctl(xyioctl); 210 dev_type_strategy(xystrategy); 211 dev_type_dump(xydump); 212 dev_type_size(xysize); 213 214 const struct bdevsw xy_bdevsw = { 215 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 216 }; 217 218 const struct cdevsw xy_cdevsw = { 219 xyopen, xyclose, xyread, xywrite, xyioctl, 220 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 221 }; 222 223 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 224 int driveno; /* unit number */ 225 int fullmode; /* submit mode */ 226 int booting; /* are we booting or not? */ 227 }; 228 229 /* 230 * dkdriver 231 */ 232 233 struct dkdriver xydkdriver = { xystrategy }; 234 235 /* 236 * start: disk label fix code (XXX) 237 */ 238 239 static void *xy_labeldata; 240 241 static void 242 xydummystrat(bp) 243 struct buf *bp; 244 { 245 if (bp->b_bcount != XYFM_BPS) 246 panic("xydummystrat"); 247 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 248 bp->b_flags |= B_DONE; 249 bp->b_flags &= ~B_BUSY; 250 } 251 252 int 253 xygetdisklabel(xy, b) 254 struct xy_softc *xy; 255 void *b; 256 { 257 const char *err; 258 #if defined(__sparc__) || defined(sun3) 259 struct sun_disklabel *sdl; 260 #endif 261 262 /* We already have the label data in `b'; setup for dummy strategy */ 263 xy_labeldata = b; 264 265 /* Required parameter for readdisklabel() */ 266 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 267 268 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 269 xydummystrat, 270 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 271 if (err) { 272 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 273 return(XY_ERR_FAIL); 274 } 275 276 #if defined(__sparc__) || defined(sun3) 277 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 278 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 279 if (sdl->sl_magic == SUN_DKMAGIC) { 280 xy->pcyl = sdl->sl_pcylinders; 281 } else 282 #endif 283 { 284 printf("%s: WARNING: no `pcyl' in disk label.\n", 285 xy->sc_dev.dv_xname); 286 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 287 xy->sc_dk.dk_label->d_acylinders; 288 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 289 xy->sc_dev.dv_xname, xy->pcyl); 290 } 291 292 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 293 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 294 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 295 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 296 xy->sectpercyl = xy->nhead * xy->nsect; 297 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 298 * sun->bsd */ 299 return(XY_ERR_AOK); 300 } 301 302 /* 303 * end: disk label fix code (XXX) 304 */ 305 306 /* 307 * Shorthand for allocating, mapping and loading a DMA buffer 308 */ 309 int 310 xy_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 311 bus_dma_tag_t tag; 312 bus_dmamap_t map; 313 bus_dma_segment_t *seg; 314 int *nsegp; 315 bus_size_t len; 316 caddr_t *kvap; 317 bus_addr_t *dmap; 318 { 319 int nseg; 320 int error; 321 322 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 323 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 324 return (error); 325 } 326 327 if ((error = bus_dmamem_map(tag, seg, nseg, 328 len, kvap, 329 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 330 bus_dmamem_free(tag, seg, nseg); 331 return (error); 332 } 333 334 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 335 BUS_DMA_NOWAIT)) != 0) { 336 bus_dmamem_unmap(tag, *kvap, len); 337 bus_dmamem_free(tag, seg, nseg); 338 return (error); 339 } 340 341 *dmap = map->dm_segs[0].ds_addr; 342 *nsegp = nseg; 343 return (0); 344 } 345 346 void 347 xy_dmamem_free(tag, map, seg, nseg, len, kva) 348 bus_dma_tag_t tag; 349 bus_dmamap_t map; 350 bus_dma_segment_t *seg; 351 int nseg; 352 bus_size_t len; 353 caddr_t kva; 354 { 355 356 bus_dmamap_unload(tag, map); 357 bus_dmamem_unmap(tag, kva, len); 358 bus_dmamem_free(tag, seg, nseg); 359 } 360 361 362 /* 363 * a u t o c o n f i g f u n c t i o n s 364 */ 365 366 /* 367 * xycmatch: determine if xyc is present or not. we do a 368 * soft reset to detect the xyc. 369 */ 370 int 371 xyc_probe(arg, tag, handle) 372 void *arg; 373 bus_space_tag_t tag; 374 bus_space_handle_t handle; 375 { 376 struct xyc *xyc = (void *)handle; /* XXX */ 377 378 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 379 } 380 381 int xycmatch(parent, cf, aux) 382 struct device *parent; 383 struct cfdata *cf; 384 void *aux; 385 { 386 struct vme_attach_args *va = aux; 387 vme_chipset_tag_t ct = va->va_vct; 388 vme_am_t mod; 389 int error; 390 391 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 392 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 393 return (0); 394 395 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 396 mod, VME_D16, xyc_probe, 0); 397 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 398 399 return (error == 0); 400 } 401 402 /* 403 * xycattach: attach controller 404 */ 405 void 406 xycattach(parent, self, aux) 407 struct device *parent, *self; 408 void *aux; 409 410 { 411 struct xyc_softc *xyc = (void *) self; 412 struct vme_attach_args *va = aux; 413 vme_chipset_tag_t ct = va->va_vct; 414 bus_space_tag_t bt; 415 bus_space_handle_t bh; 416 vme_intr_handle_t ih; 417 vme_am_t mod; 418 struct xyc_attach_args xa; 419 int lcv, res, error; 420 bus_dma_segment_t seg; 421 int rseg; 422 vme_mapresc_t resc; 423 bus_addr_t busaddr; 424 425 /* get addressing and intr level stuff from autoconfig and load it 426 * into our xyc_softc. */ 427 428 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 429 430 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 431 panic("xyc: vme alloc"); 432 433 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 434 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 435 panic("xyc: vme_map"); 436 437 xyc->xyc = (struct xyc *) bh; /* XXX */ 438 xyc->ipl = va->ilevel; 439 xyc->vector = va->ivector; 440 xyc->no_ols = 0; /* XXX should be from config */ 441 442 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 443 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 444 445 /* 446 * allocate and zero buffers 447 * check boundaries of the KVA's ... all IOPBs must reside in 448 * the same 64K region. 449 */ 450 451 /* Get DMA handle for misc. transfers */ 452 if ((error = vme_dmamap_create( 453 ct, /* VME chip tag */ 454 MAXPHYS, /* size */ 455 VME_AM_A24, /* address modifier */ 456 VME_D16, /* data size */ 457 0, /* swap */ 458 1, /* nsegments */ 459 MAXPHYS, /* maxsegsz */ 460 0, /* boundary */ 461 BUS_DMA_NOWAIT, 462 &xyc->auxmap)) != 0) { 463 464 printf("%s: DMA buffer map create error %d\n", 465 xyc->sc_dev.dv_xname, error); 466 return; 467 } 468 469 /* Get DMA handle for mapping iorq descriptors */ 470 if ((error = vme_dmamap_create( 471 ct, /* VME chip tag */ 472 XYC_MAXIOPB * sizeof(struct xy_iopb), 473 VME_AM_A24, /* address modifier */ 474 VME_D16, /* data size */ 475 0, /* swap */ 476 1, /* nsegments */ 477 XYC_MAXIOPB * sizeof(struct xy_iopb), 478 64*1024, /* boundary */ 479 BUS_DMA_NOWAIT, 480 &xyc->iopmap)) != 0) { 481 482 printf("%s: DMA buffer map create error %d\n", 483 xyc->sc_dev.dv_xname, error); 484 return; 485 } 486 487 /* Get DMA buffer for iorq descriptors */ 488 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 489 XYC_MAXIOPB * sizeof(struct xy_iopb), 490 (caddr_t *)&xyc->iopbase, 491 &busaddr)) != 0) { 492 printf("%s: DMA buffer alloc error %d\n", 493 xyc->sc_dev.dv_xname, error); 494 return; 495 } 496 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 497 498 bzero(xyc->iopbase, XYC_MAXIOPB * sizeof(struct xy_iopb)); 499 500 xyc->reqs = (struct xy_iorq *) 501 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 502 M_DEVBUF, M_NOWAIT|M_ZERO); 503 if (xyc->reqs == NULL) 504 panic("xyc malloc"); 505 506 /* 507 * init iorq to iopb pointers, and non-zero fields in the 508 * iopb which never change. 509 */ 510 511 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 512 xyc->xy_chain[lcv] = NULL; 513 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 514 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 515 xyc->iopbase[lcv].asr = 1; /* always the same */ 516 xyc->iopbase[lcv].eef = 1; /* always the same */ 517 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 518 xyc->iopbase[lcv].aud = 1; /* always the same */ 519 xyc->iopbase[lcv].relo = 1; /* always the same */ 520 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 521 522 if ((error = vme_dmamap_create( 523 ct, /* VME chip tag */ 524 MAXPHYS, /* size */ 525 VME_AM_A24, /* address modifier */ 526 VME_D16, /* data size */ 527 0, /* swap */ 528 1, /* nsegments */ 529 MAXPHYS, /* maxsegsz */ 530 0, /* boundary */ 531 BUS_DMA_NOWAIT, 532 &xyc->reqs[lcv].dmamap)) != 0) { 533 534 printf("%s: DMA buffer map create error %d\n", 535 xyc->sc_dev.dv_xname, error); 536 return; 537 } 538 } 539 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 540 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 541 xyc->xy_hand = 0; 542 543 /* read controller parameters and insure we have a 450/451 */ 544 545 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 546 res = xyc->ciopb->ctyp; 547 XYC_DONE(xyc, error); 548 if (res != XYCT_450) { 549 if (error) 550 printf(": %s: ", xyc_e2str(error)); 551 printf(": doesn't identify as a 450/451\n"); 552 return; 553 } 554 printf(": Xylogics 450/451"); 555 if (xyc->no_ols) 556 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 557 printf("\n"); 558 if (error) { 559 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 560 xyc_e2str(error)); 561 return; 562 } 563 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 564 printf("%s: 24 bit addressing turned off\n", 565 xyc->sc_dev.dv_xname); 566 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 567 printf("to enable 24 bit mode and this driver\n"); 568 return; 569 } 570 571 /* link in interrupt with higher level software */ 572 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 573 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 574 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 575 xyc->sc_dev.dv_xname, "intr"); 576 577 callout_init(&xyc->sc_tick_ch); 578 579 /* now we must look for disks using autoconfig */ 580 xa.fullmode = XY_SUB_POLL; 581 xa.booting = 1; 582 583 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 584 (void) config_found(self, (void *) &xa, NULL); 585 586 /* start the watchdog clock */ 587 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 588 589 } 590 591 /* 592 * xymatch: probe for disk. 593 * 594 * note: we almost always say disk is present. this allows us to 595 * spin up and configure a disk after the system is booted (we can 596 * call xyattach!). 597 */ 598 int 599 xymatch(parent, cf, aux) 600 struct device *parent; 601 struct cfdata *cf; 602 void *aux; 603 { 604 struct xyc_attach_args *xa = aux; 605 606 /* looking for autoconf wildcard or exact match */ 607 608 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 609 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 610 return 0; 611 612 return 1; 613 614 } 615 616 /* 617 * xyattach: attach a disk. this can be called from autoconf and also 618 * from xyopen/xystrategy. 619 */ 620 void 621 xyattach(parent, self, aux) 622 struct device *parent, *self; 623 void *aux; 624 625 { 626 struct xy_softc *xy = (void *) self, *oxy; 627 struct xyc_softc *xyc = (void *) parent; 628 struct xyc_attach_args *xa = aux; 629 int spt, mb, blk, lcv, fmode, s = 0, newstate; 630 struct dkbad *dkb; 631 int rseg, error; 632 bus_dma_segment_t seg; 633 bus_addr_t busaddr; 634 caddr_t dmaddr; 635 caddr_t buf; 636 637 /* 638 * Always re-initialize the disk structure. We want statistics 639 * to start with a clean slate. 640 */ 641 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 642 xy->sc_dk.dk_driver = &xydkdriver; 643 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 644 645 /* if booting, init the xy_softc */ 646 647 if (xa->booting) { 648 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 649 xy->flags = 0; 650 xy->parent = xyc; 651 652 /* init queue of waiting bufs */ 653 654 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 655 656 xy->xyrq = &xyc->reqs[xa->driveno]; 657 658 } 659 xy->xy_drive = xa->driveno; 660 fmode = xa->fullmode; 661 xyc->sc_drives[xa->driveno] = xy; 662 663 /* if not booting, make sure we are the only process in the attach for 664 * this drive. if locked out, sleep on it. */ 665 666 if (!xa->booting) { 667 s = splbio(); 668 while (xy->state == XY_DRIVE_ATTACHING) { 669 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 670 splx(s); 671 return; 672 } 673 } 674 printf("%s at %s", 675 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 676 } 677 678 /* we now have control */ 679 xy->state = XY_DRIVE_ATTACHING; 680 newstate = XY_DRIVE_UNKNOWN; 681 682 buf = NULL; 683 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 684 XYFM_BPS, 685 (caddr_t *)&buf, 686 &busaddr)) != 0) { 687 printf("%s: DMA buffer alloc error %d\n", 688 xyc->sc_dev.dv_xname, error); 689 return; 690 } 691 dmaddr = (caddr_t)(u_long)BUS_ADDR_PADDR(busaddr); 692 693 /* first try and reset the drive */ 694 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 695 XYC_DONE(xyc, error); 696 if (error == XY_ERR_DNRY) { 697 printf(" drive %d: off-line\n", xa->driveno); 698 goto done; 699 } 700 if (error) { 701 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 702 goto done; 703 } 704 printf(" drive %d: ready", xa->driveno); 705 706 /* 707 * now set drive parameters (to semi-bogus values) so we can read the 708 * disk label. 709 */ 710 xy->pcyl = xy->ncyl = 1; 711 xy->acyl = 0; 712 xy->nhead = 1; 713 xy->nsect = 1; 714 xy->sectpercyl = 1; 715 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 716 xy->dkb.bt_bad[lcv].bt_cyl = 717 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 718 719 /* read disk label */ 720 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 721 xy->drive_type++) { 722 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 723 dmaddr, fmode); 724 XYC_DONE(xyc, error); 725 if (error == XY_ERR_AOK) break; 726 } 727 728 if (error != XY_ERR_AOK) { 729 printf("\n%s: reading disk label failed: %s\n", 730 xy->sc_dev.dv_xname, xyc_e2str(error)); 731 goto done; 732 } 733 printf(" (drive type %d)\n", xy->drive_type); 734 735 newstate = XY_DRIVE_NOLABEL; 736 737 xy->hw_spt = spt = 0; /* XXX needed ? */ 738 /* Attach the disk: must be before getdisklabel to malloc label */ 739 disk_attach(&xy->sc_dk); 740 741 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 742 goto done; 743 744 /* inform the user of what is up */ 745 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 746 buf, xy->pcyl); 747 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 748 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 749 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 750 XYFM_BPS); 751 752 /* 753 * 450/451 stupidity: the drive type is encoded into the format 754 * of the disk. the drive type in the IOPB must match the drive 755 * type in the format, or you will not be able to do I/O to the 756 * disk (you get header not found errors). if you have two drives 757 * of different sizes that have the same drive type in their 758 * formatting then you are out of luck. 759 * 760 * this problem was corrected in the 753/7053. 761 */ 762 763 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 764 oxy = xyc->sc_drives[lcv]; 765 if (oxy == NULL || oxy == xy) continue; 766 if (oxy->drive_type != xy->drive_type) continue; 767 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 768 xy->nhead != oxy->nhead) { 769 printf("%s: %s and %s must be the same size!\n", 770 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 771 oxy->sc_dev.dv_xname); 772 panic("xy drive size mismatch"); 773 } 774 } 775 776 777 /* now set the real drive parameters! */ 778 779 blk = (xy->nsect - 1) + 780 ((xy->nhead - 1) * xy->nsect) + 781 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 782 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 783 XYC_DONE(xyc, error); 784 if (error) { 785 printf("%s: write drive size failed: %s\n", 786 xy->sc_dev.dv_xname, xyc_e2str(error)); 787 goto done; 788 } 789 newstate = XY_DRIVE_ONLINE; 790 791 /* 792 * read bad144 table. this table resides on the first sector of the 793 * last track of the disk (i.e. second cyl of "acyl" area). 794 */ 795 796 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 797 /* last cyl */ 798 (xy->nhead - 1) * xy->nsect; /* last head */ 799 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 800 dmaddr, fmode); 801 XYC_DONE(xyc, error); 802 if (error) { 803 printf("%s: reading bad144 failed: %s\n", 804 xy->sc_dev.dv_xname, xyc_e2str(error)); 805 goto done; 806 } 807 808 /* check dkbad for sanity */ 809 dkb = (struct dkbad *) buf; 810 for (lcv = 0; lcv < 126; lcv++) { 811 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 812 dkb->bt_bad[lcv].bt_cyl == 0) && 813 dkb->bt_bad[lcv].bt_trksec == 0xffff) 814 continue; /* blank */ 815 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 816 break; 817 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 818 break; 819 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 820 break; 821 } 822 if (lcv != 126) { 823 printf("%s: warning: invalid bad144 sector!\n", 824 xy->sc_dev.dv_xname); 825 } else { 826 bcopy(buf, &xy->dkb, XYFM_BPS); 827 } 828 829 done: 830 if (buf != NULL) { 831 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 832 &seg, rseg, XYFM_BPS, buf); 833 } 834 835 xy->state = newstate; 836 if (!xa->booting) { 837 wakeup(&xy->state); 838 splx(s); 839 } 840 } 841 842 /* 843 * end of autoconfig functions 844 */ 845 846 /* 847 * { b , c } d e v s w f u n c t i o n s 848 */ 849 850 /* 851 * xyclose: close device 852 */ 853 int 854 xyclose(dev, flag, fmt, l) 855 dev_t dev; 856 int flag, fmt; 857 struct lwp *l; 858 859 { 860 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 861 int part = DISKPART(dev); 862 863 /* clear mask bits */ 864 865 switch (fmt) { 866 case S_IFCHR: 867 xy->sc_dk.dk_copenmask &= ~(1 << part); 868 break; 869 case S_IFBLK: 870 xy->sc_dk.dk_bopenmask &= ~(1 << part); 871 break; 872 } 873 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 874 875 return 0; 876 } 877 878 /* 879 * xydump: crash dump system 880 */ 881 int 882 xydump(dev, blkno, va, size) 883 dev_t dev; 884 daddr_t blkno; 885 caddr_t va; 886 size_t size; 887 { 888 int unit, part; 889 struct xy_softc *xy; 890 891 unit = DISKUNIT(dev); 892 if (unit >= xy_cd.cd_ndevs) 893 return ENXIO; 894 part = DISKPART(dev); 895 896 xy = xy_cd.cd_devs[unit]; 897 898 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 899 'a' + part); 900 901 return ENXIO; 902 903 /* outline: globals: "dumplo" == sector number of partition to start 904 * dump at (convert to physical sector with partition table) 905 * "dumpsize" == size of dump in clicks "physmem" == size of physical 906 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 907 * physmem) 908 * 909 * dump a copy of physical memory to the dump device starting at sector 910 * "dumplo" in the swap partition (make sure > 0). map in pages as 911 * we go. use polled I/O. 912 * 913 * XXX how to handle NON_CONTIG? */ 914 915 } 916 917 /* 918 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 919 */ 920 int 921 xyioctl(dev, command, addr, flag, l) 922 dev_t dev; 923 u_long command; 924 caddr_t addr; 925 int flag; 926 struct lwp *l; 927 928 { 929 struct xy_softc *xy; 930 struct xd_iocmd *xio; 931 int error, s, unit; 932 #ifdef __HAVE_OLD_DISKLABEL 933 struct disklabel newlabel; 934 #endif 935 struct disklabel *lp; 936 937 unit = DISKUNIT(dev); 938 939 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 940 return (ENXIO); 941 942 /* switch on ioctl type */ 943 944 switch (command) { 945 case DIOCSBAD: /* set bad144 info */ 946 if ((flag & FWRITE) == 0) 947 return EBADF; 948 s = splbio(); 949 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 950 splx(s); 951 return 0; 952 953 case DIOCGDINFO: /* get disk label */ 954 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 955 return 0; 956 #ifdef __HAVE_OLD_DISKLABEL 957 case ODIOCGDINFO: 958 newlabel = *(xy->sc_dk.dk_label); 959 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 960 return ENOTTY; 961 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 962 return 0; 963 #endif 964 965 case DIOCGPART: /* get partition info */ 966 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 967 ((struct partinfo *) addr)->part = 968 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 969 return 0; 970 971 case DIOCSDINFO: /* set disk label */ 972 #ifdef __HAVE_OLD_DISKLABEL 973 case ODIOCSDINFO: 974 if (command == ODIOCSDINFO) { 975 memset(&newlabel, 0, sizeof newlabel); 976 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 977 lp = &newlabel; 978 } else 979 #endif 980 lp = (struct disklabel *)addr; 981 982 if ((flag & FWRITE) == 0) 983 return EBADF; 984 error = setdisklabel(xy->sc_dk.dk_label, 985 lp, /* xy->sc_dk.dk_openmask : */ 0, 986 xy->sc_dk.dk_cpulabel); 987 if (error == 0) { 988 if (xy->state == XY_DRIVE_NOLABEL) 989 xy->state = XY_DRIVE_ONLINE; 990 } 991 return error; 992 993 case DIOCWLABEL: /* change write status of disk label */ 994 if ((flag & FWRITE) == 0) 995 return EBADF; 996 if (*(int *) addr) 997 xy->flags |= XY_WLABEL; 998 else 999 xy->flags &= ~XY_WLABEL; 1000 return 0; 1001 1002 case DIOCWDINFO: /* write disk label */ 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 case ODIOCWDINFO: 1005 if (command == ODIOCWDINFO) { 1006 memset(&newlabel, 0, sizeof newlabel); 1007 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1008 lp = &newlabel; 1009 } else 1010 #endif 1011 lp = (struct disklabel *)addr; 1012 1013 if ((flag & FWRITE) == 0) 1014 return EBADF; 1015 error = setdisklabel(xy->sc_dk.dk_label, 1016 lp, /* xy->sc_dk.dk_openmask : */ 0, 1017 xy->sc_dk.dk_cpulabel); 1018 if (error == 0) { 1019 if (xy->state == XY_DRIVE_NOLABEL) 1020 xy->state = XY_DRIVE_ONLINE; 1021 1022 /* Simulate opening partition 0 so write succeeds. */ 1023 xy->sc_dk.dk_openmask |= (1 << 0); 1024 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1025 xystrategy, xy->sc_dk.dk_label, 1026 xy->sc_dk.dk_cpulabel); 1027 xy->sc_dk.dk_openmask = 1028 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1029 } 1030 return error; 1031 1032 case DIOSXDCMD: 1033 xio = (struct xd_iocmd *) addr; 1034 if ((error = kauth_authorize_generic(l->l_proc->p_cred, 1035 KAUTH_GENERIC_ISSUSER, 1036 &l->l_proc->p_acflag)) != 0) 1037 return (error); 1038 return (xyc_ioctlcmd(xy, dev, xio)); 1039 1040 default: 1041 return ENOTTY; 1042 } 1043 } 1044 1045 /* 1046 * xyopen: open drive 1047 */ 1048 1049 int 1050 xyopen(dev, flag, fmt, l) 1051 dev_t dev; 1052 int flag, fmt; 1053 struct lwp *l; 1054 { 1055 int unit, part; 1056 struct xy_softc *xy; 1057 struct xyc_attach_args xa; 1058 1059 /* first, could it be a valid target? */ 1060 1061 unit = DISKUNIT(dev); 1062 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 1063 return (ENXIO); 1064 part = DISKPART(dev); 1065 1066 /* do we need to attach the drive? */ 1067 1068 if (xy->state == XY_DRIVE_UNKNOWN) { 1069 xa.driveno = xy->xy_drive; 1070 xa.fullmode = XY_SUB_WAIT; 1071 xa.booting = 0; 1072 xyattach((struct device *) xy->parent, 1073 (struct device *) xy, &xa); 1074 if (xy->state == XY_DRIVE_UNKNOWN) { 1075 return (EIO); 1076 } 1077 } 1078 /* check for partition */ 1079 1080 if (part != RAW_PART && 1081 (part >= xy->sc_dk.dk_label->d_npartitions || 1082 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1083 return (ENXIO); 1084 } 1085 /* set open masks */ 1086 1087 switch (fmt) { 1088 case S_IFCHR: 1089 xy->sc_dk.dk_copenmask |= (1 << part); 1090 break; 1091 case S_IFBLK: 1092 xy->sc_dk.dk_bopenmask |= (1 << part); 1093 break; 1094 } 1095 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1096 1097 return 0; 1098 } 1099 1100 int 1101 xyread(dev, uio, flags) 1102 dev_t dev; 1103 struct uio *uio; 1104 int flags; 1105 { 1106 1107 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1108 } 1109 1110 int 1111 xywrite(dev, uio, flags) 1112 dev_t dev; 1113 struct uio *uio; 1114 int flags; 1115 { 1116 1117 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1118 } 1119 1120 1121 /* 1122 * xysize: return size of a partition for a dump 1123 */ 1124 1125 int 1126 xysize(dev) 1127 dev_t dev; 1128 1129 { 1130 struct xy_softc *xysc; 1131 int unit, part, size, omask; 1132 1133 /* valid unit? */ 1134 unit = DISKUNIT(dev); 1135 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1136 return (-1); 1137 1138 part = DISKPART(dev); 1139 omask = xysc->sc_dk.dk_openmask & (1 << part); 1140 1141 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1142 return (-1); 1143 1144 /* do it */ 1145 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1146 size = -1; /* only give valid size for swap partitions */ 1147 else 1148 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1149 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1150 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1151 return (-1); 1152 return (size); 1153 } 1154 1155 /* 1156 * xystrategy: buffering system interface to xy. 1157 */ 1158 1159 void 1160 xystrategy(bp) 1161 struct buf *bp; 1162 1163 { 1164 struct xy_softc *xy; 1165 int s, unit; 1166 struct xyc_attach_args xa; 1167 struct disklabel *lp; 1168 daddr_t blkno; 1169 1170 unit = DISKUNIT(bp->b_dev); 1171 1172 /* check for live device */ 1173 1174 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1175 bp->b_blkno < 0 || 1176 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1177 bp->b_error = EINVAL; 1178 goto bad; 1179 } 1180 /* do we need to attach the drive? */ 1181 1182 if (xy->state == XY_DRIVE_UNKNOWN) { 1183 xa.driveno = xy->xy_drive; 1184 xa.fullmode = XY_SUB_WAIT; 1185 xa.booting = 0; 1186 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1187 if (xy->state == XY_DRIVE_UNKNOWN) { 1188 bp->b_error = EIO; 1189 goto bad; 1190 } 1191 } 1192 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1193 /* no I/O to unlabeled disks, unless raw partition */ 1194 bp->b_error = EIO; 1195 goto bad; 1196 } 1197 /* short circuit zero length request */ 1198 1199 if (bp->b_bcount == 0) 1200 goto done; 1201 1202 /* check bounds with label (disksubr.c). Determine the size of the 1203 * transfer, and make sure it is within the boundaries of the 1204 * partition. Adjust transfer if needed, and signal errors or early 1205 * completion. */ 1206 1207 lp = xy->sc_dk.dk_label; 1208 1209 if (bounds_check_with_label(&xy->sc_dk, bp, 1210 (xy->flags & XY_WLABEL) != 0) <= 0) 1211 goto done; 1212 1213 /* 1214 * Now convert the block number to absolute and put it in 1215 * terms of the device's logical block size. 1216 */ 1217 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1218 if (DISKPART(bp->b_dev) != RAW_PART) 1219 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1220 1221 bp->b_rawblkno = blkno; 1222 1223 /* 1224 * now we know we have a valid buf structure that we need to do I/O 1225 * on. 1226 */ 1227 s = splbio(); /* protect the queues */ 1228 1229 BUFQ_PUT(xy->xyq, bp); 1230 1231 /* start 'em up */ 1232 1233 xyc_start(xy->parent, NULL); 1234 1235 /* done! */ 1236 1237 splx(s); 1238 return; 1239 1240 bad: /* tells upper layers we have an error */ 1241 bp->b_flags |= B_ERROR; 1242 done: /* tells upper layers we are done with this 1243 * buf */ 1244 bp->b_resid = bp->b_bcount; 1245 biodone(bp); 1246 } 1247 /* 1248 * end of {b,c}devsw functions 1249 */ 1250 1251 /* 1252 * i n t e r r u p t f u n c t i o n 1253 * 1254 * xycintr: hardware interrupt. 1255 */ 1256 int 1257 xycintr(v) 1258 void *v; 1259 1260 { 1261 struct xyc_softc *xycsc = v; 1262 1263 /* kick the event counter */ 1264 1265 xycsc->sc_intrcnt.ev_count++; 1266 1267 /* remove as many done IOPBs as possible */ 1268 1269 xyc_remove_iorq(xycsc); 1270 1271 /* start any iorq's already waiting */ 1272 1273 xyc_start(xycsc, NULL); 1274 1275 return (1); 1276 } 1277 /* 1278 * end of interrupt function 1279 */ 1280 1281 /* 1282 * i n t e r n a l f u n c t i o n s 1283 */ 1284 1285 /* 1286 * xyc_rqinit: fill out the fields of an I/O request 1287 */ 1288 1289 inline void 1290 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1291 struct xy_iorq *rq; 1292 struct xyc_softc *xyc; 1293 struct xy_softc *xy; 1294 int md; 1295 u_long blk; 1296 int cnt; 1297 caddr_t db; 1298 struct buf *bp; 1299 { 1300 rq->xyc = xyc; 1301 rq->xy = xy; 1302 rq->ttl = XYC_MAXTTL + 10; 1303 rq->mode = md; 1304 rq->tries = rq->errno = rq->lasterror = 0; 1305 rq->blockno = blk; 1306 rq->sectcnt = cnt; 1307 rq->dbuf = db; 1308 rq->buf = bp; 1309 } 1310 1311 /* 1312 * xyc_rqtopb: load up an IOPB based on an iorq 1313 */ 1314 1315 void 1316 xyc_rqtopb(iorq, iopb, cmd, subfun) 1317 struct xy_iorq *iorq; 1318 struct xy_iopb *iopb; 1319 int cmd, subfun; 1320 1321 { 1322 u_long block, dp; 1323 1324 /* normal IOPB case, standard stuff */ 1325 1326 /* chain bit handled later */ 1327 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1328 iopb->com = cmd; 1329 iopb->errno = 0; 1330 iopb->errs = 0; 1331 iopb->done = 0; 1332 if (iorq->xy) { 1333 iopb->unit = iorq->xy->xy_drive; 1334 iopb->dt = iorq->xy->drive_type; 1335 } else { 1336 iopb->unit = 0; 1337 iopb->dt = 0; 1338 } 1339 block = iorq->blockno; 1340 if (iorq->xy == NULL || block == 0) { 1341 iopb->sect = iopb->head = iopb->cyl = 0; 1342 } else { 1343 iopb->sect = block % iorq->xy->nsect; 1344 block = block / iorq->xy->nsect; 1345 iopb->head = block % iorq->xy->nhead; 1346 block = block / iorq->xy->nhead; 1347 iopb->cyl = block; 1348 } 1349 iopb->scnt = iorq->sectcnt; 1350 dp = (u_long) iorq->dbuf; 1351 if (iorq->dbuf == NULL) { 1352 iopb->dataa = 0; 1353 iopb->datar = 0; 1354 } else { 1355 iopb->dataa = (dp & 0xffff); 1356 iopb->datar = ((dp & 0xff0000) >> 16); 1357 } 1358 iopb->subfn = subfun; 1359 } 1360 1361 1362 /* 1363 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1364 */ 1365 1366 int 1367 xyc_unbusy(xyc, del) 1368 1369 struct xyc *xyc; 1370 int del; 1371 1372 { 1373 while (del-- > 0) { 1374 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1375 break; 1376 DELAY(1); 1377 } 1378 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1379 } 1380 1381 /* 1382 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1383 * note that NORM requests are handled separately. 1384 */ 1385 int 1386 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1387 struct xyc_softc *xycsc; 1388 int cmd, subfn, unit, block, scnt; 1389 char *dptr; 1390 int fullmode; 1391 1392 { 1393 int submode = XY_STATE(fullmode); 1394 struct xy_iorq *iorq = xycsc->ciorq; 1395 struct xy_iopb *iopb = xycsc->ciopb; 1396 1397 /* 1398 * is someone else using the control iopq wait for it if we can 1399 */ 1400 start: 1401 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1402 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1403 return(XY_ERR_FAIL); 1404 goto start; 1405 } 1406 1407 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1408 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1409 iorq->mode = XY_SUB_FREE; 1410 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1411 } 1412 1413 /* init iorq/iopb */ 1414 1415 xyc_rqinit(iorq, xycsc, 1416 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1417 fullmode, block, scnt, dptr, NULL); 1418 1419 /* load IOPB from iorq */ 1420 1421 xyc_rqtopb(iorq, iopb, cmd, subfn); 1422 1423 /* submit it for processing */ 1424 1425 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1426 1427 return(XY_ERR_AOK); 1428 } 1429 1430 /* 1431 * xyc_startbuf 1432 * start a buffer for running 1433 */ 1434 1435 int 1436 xyc_startbuf(xycsc, xysc, bp) 1437 struct xyc_softc *xycsc; 1438 struct xy_softc *xysc; 1439 struct buf *bp; 1440 1441 { 1442 int partno, error; 1443 struct xy_iorq *iorq; 1444 struct xy_iopb *iopb; 1445 u_long block; 1446 1447 iorq = xysc->xyrq; 1448 iopb = iorq->iopb; 1449 1450 /* get buf */ 1451 1452 if (bp == NULL) 1453 panic("xyc_startbuf null buf"); 1454 1455 partno = DISKPART(bp->b_dev); 1456 #ifdef XYC_DEBUG 1457 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1458 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1459 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1460 bp->b_bcount, bp->b_data); 1461 #endif 1462 1463 /* 1464 * load request. 1465 * 1466 * note that iorq points to the buffer as mapped into DVMA space, 1467 * where as the bp->b_data points to its non-DVMA mapping. 1468 */ 1469 1470 block = bp->b_rawblkno; 1471 1472 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1473 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1474 if (error != 0) { 1475 printf("%s: warning: cannot load DMA map\n", 1476 xycsc->sc_dev.dv_xname); 1477 return (XY_ERR_FAIL); /* XXX: need some sort of 1478 * call-back scheme here? */ 1479 } 1480 1481 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1482 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1483 ? BUS_DMASYNC_PREREAD 1484 : BUS_DMASYNC_PREWRITE); 1485 1486 /* init iorq and load iopb from it */ 1487 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1488 bp->b_bcount / XYFM_BPS, 1489 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1490 bp); 1491 1492 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1493 1494 /* Instrumentation. */ 1495 disk_busy(&xysc->sc_dk); 1496 1497 return (XY_ERR_AOK); 1498 } 1499 1500 1501 /* 1502 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1503 * if ok. if it fail returns an error code. type is XY_SUB_*. 1504 * 1505 * note: caller frees iorq in all cases except NORM 1506 * 1507 * return value: 1508 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1509 * WAIT: XY_AOK (success), <error-code> (failed) 1510 * POLL: <same as WAIT> 1511 * NOQ : <same as NORM> 1512 * 1513 * there are three sources for i/o requests: 1514 * [1] xystrategy: normal block I/O, using "struct buf" system. 1515 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1516 * [3] open/ioctl: these are I/O requests done in the context of a process, 1517 * and the process should block until they are done. 1518 * 1519 * software state is stored in the iorq structure. each iorq has an 1520 * iopb structure. the hardware understands the iopb structure. 1521 * every command must go through an iopb. a 450 handles one iopb at a 1522 * time, where as a 451 can take them in chains. [the 450 claims it 1523 * can handle chains, but is appears to be buggy...] iopb are allocated 1524 * in DVMA space at boot up time. each disk gets one iopb, and the 1525 * controller gets one (for POLL and WAIT commands). what happens if 1526 * the iopb is busy? for i/o type [1], the buffers are queued at the 1527 * "buff" layer and * picked up later by the interrupt routine. for case 1528 * [2] we can only be blocked if there is a WAIT type I/O request being 1529 * run. since this can only happen when we are crashing, we wait a sec 1530 * and then steal the IOPB. for case [3] the process can sleep 1531 * on the iorq free list until some iopbs are available. 1532 */ 1533 1534 1535 int 1536 xyc_submit_iorq(xycsc, iorq, type) 1537 struct xyc_softc *xycsc; 1538 struct xy_iorq *iorq; 1539 int type; 1540 1541 { 1542 struct xy_iopb *dmaiopb; 1543 1544 #ifdef XYC_DEBUG 1545 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1546 xycsc->sc_dev.dv_xname, iorq, type); 1547 #endif 1548 1549 /* first check and see if controller is busy */ 1550 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1551 #ifdef XYC_DEBUG 1552 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1553 #endif 1554 if (type == XY_SUB_NOQ) 1555 return (XY_ERR_FAIL); /* failed */ 1556 switch (type) { 1557 case XY_SUB_NORM: 1558 return XY_ERR_AOK; /* success */ 1559 case XY_SUB_WAIT: 1560 while (iorq->iopb->done == 0) { 1561 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1562 } 1563 return (iorq->errno); 1564 case XY_SUB_POLL: /* steal controller */ 1565 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1566 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1567 panic("xyc_submit_iorq: stuck xyc"); 1568 printf("%s: stole controller\n", 1569 xycsc->sc_dev.dv_xname); 1570 break; 1571 default: 1572 panic("xyc_submit_iorq adding"); 1573 } 1574 } 1575 1576 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1577 if (dmaiopb == NULL) { /* nothing doing? */ 1578 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1579 return(XY_ERR_AOK); 1580 panic("xyc_submit_iorq: xyc_chain failed!"); 1581 } 1582 1583 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1584 1585 /* command now running, wrap it up */ 1586 switch (type) { 1587 case XY_SUB_NORM: 1588 case XY_SUB_NOQ: 1589 return (XY_ERR_AOK); /* success */ 1590 case XY_SUB_WAIT: 1591 while (iorq->iopb->done == 0) { 1592 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1593 } 1594 return (iorq->errno); 1595 case XY_SUB_POLL: 1596 return (xyc_piodriver(xycsc, iorq)); 1597 default: 1598 panic("xyc_submit_iorq wrap up"); 1599 } 1600 panic("xyc_submit_iorq"); 1601 return 0; /* not reached */ 1602 } 1603 1604 1605 /* 1606 * xyc_chain: build a chain. return dvma address of first element in 1607 * the chain. iorq != NULL: means we only want that item on the chain. 1608 */ 1609 1610 struct xy_iopb * 1611 xyc_chain(xycsc, iorq) 1612 struct xyc_softc *xycsc; 1613 struct xy_iorq *iorq; 1614 1615 { 1616 int togo, chain, hand; 1617 1618 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1619 1620 /* 1621 * promote control IOPB to the top 1622 */ 1623 if (iorq == NULL) { 1624 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1625 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1626 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1627 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1628 } 1629 1630 /* 1631 * special case: if iorq != NULL then we have a POLL or WAIT request. 1632 * we let these take priority and do them first. 1633 */ 1634 if (iorq) { 1635 xycsc->xy_chain[0] = iorq; 1636 iorq->iopb->chen = 0; 1637 return(iorq->dmaiopb); 1638 } 1639 1640 /* 1641 * NORM case: do round robin and maybe chain (if allowed and possible) 1642 */ 1643 chain = 0; 1644 hand = xycsc->xy_hand; 1645 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1646 1647 for (togo = XYC_MAXIOPB; togo > 0; 1648 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1649 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1650 1651 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1652 xycsc->iopbase[hand].done) 1653 continue; /* not ready-for-i/o */ 1654 1655 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1656 iopb = xycsc->xy_chain[chain]->iopb; 1657 iopb->chen = 0; 1658 if (chain != 0) { 1659 /* adding a link to a chain */ 1660 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1661 prev_iopb->chen = 1; 1662 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1663 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1664 } else { 1665 /* head of chain */ 1666 iorq = xycsc->xy_chain[chain]; 1667 } 1668 chain++; 1669 1670 /* quit if chaining dis-allowed */ 1671 if (xycsc->no_ols) 1672 break; 1673 } 1674 1675 return(iorq ? iorq->dmaiopb : NULL); 1676 } 1677 1678 /* 1679 * xyc_piodriver 1680 * 1681 * programmed i/o driver. this function takes over the computer 1682 * and drains off the polled i/o request. it returns the status of the iorq 1683 * the caller is interesting in. 1684 */ 1685 int 1686 xyc_piodriver(xycsc, iorq) 1687 struct xyc_softc *xycsc; 1688 struct xy_iorq *iorq; 1689 1690 { 1691 int nreset = 0; 1692 int retval = 0; 1693 u_long res; 1694 #ifdef XYC_DEBUG 1695 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1696 #endif 1697 1698 while (iorq->iopb->done == 0) { 1699 1700 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1701 1702 /* we expect some progress soon */ 1703 if (res == XY_ERR_FAIL && nreset >= 2) { 1704 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1705 #ifdef XYC_DEBUG 1706 printf("xyc_piodriver: timeout\n"); 1707 #endif 1708 return (XY_ERR_FAIL); 1709 } 1710 if (res == XY_ERR_FAIL) { 1711 if (xyc_reset(xycsc, 0, 1712 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1713 XY_ERR_FAIL, 1714 0) == XY_ERR_FAIL) 1715 return (XY_ERR_FAIL); /* flushes all but POLL 1716 * requests, resets */ 1717 continue; 1718 } 1719 1720 xyc_remove_iorq(xycsc); /* may resubmit request */ 1721 1722 if (iorq->iopb->done == 0) 1723 xyc_start(xycsc, iorq); 1724 } 1725 1726 /* get return value */ 1727 1728 retval = iorq->errno; 1729 1730 #ifdef XYC_DEBUG 1731 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1732 iorq->errno, xyc_e2str(iorq->errno)); 1733 #endif 1734 1735 /* start up any bufs that have queued */ 1736 1737 xyc_start(xycsc, NULL); 1738 1739 return (retval); 1740 } 1741 1742 /* 1743 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1744 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1745 */ 1746 void 1747 xyc_xyreset(xycsc, xysc) 1748 struct xyc_softc *xycsc; 1749 struct xy_softc *xysc; 1750 1751 { 1752 struct xy_iopb tmpiopb; 1753 struct xy_iopb *iopb; 1754 int del; 1755 1756 iopb = xycsc->ciopb; 1757 1758 /* Save contents */ 1759 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1760 1761 iopb->chen = iopb->done = iopb->errs = 0; 1762 iopb->ien = 0; 1763 iopb->com = XYCMD_RST; 1764 iopb->unit = xysc->xy_drive; 1765 1766 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1767 1768 del = XYC_RESETUSEC; 1769 while (del > 0) { 1770 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1771 break; 1772 DELAY(1); 1773 del--; 1774 } 1775 1776 if (del <= 0 || iopb->errs) { 1777 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1778 xyc_e2str(iopb->errno)); 1779 del = xycsc->xyc->xyc_rsetup; 1780 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1781 panic("xyc_reset"); 1782 } else { 1783 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1784 } 1785 1786 /* Restore contents */ 1787 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1788 } 1789 1790 1791 /* 1792 * xyc_reset: reset everything: requests are marked as errors except 1793 * a polled request (which is resubmitted) 1794 */ 1795 int 1796 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1797 struct xyc_softc *xycsc; 1798 int quiet, error; 1799 struct xy_iorq *blastmode; 1800 struct xy_softc *xysc; 1801 1802 { 1803 int del = 0, lcv, retval = XY_ERR_AOK; 1804 1805 /* soft reset hardware */ 1806 1807 if (!quiet) 1808 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1809 del = xycsc->xyc->xyc_rsetup; 1810 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1811 if (del == XY_ERR_FAIL) { 1812 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1813 retval = XY_ERR_FAIL; 1814 } 1815 if (xysc) 1816 xyc_xyreset(xycsc, xysc); 1817 1818 /* fix queues based on "blast-mode" */ 1819 1820 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1821 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1822 1823 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1824 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1825 XY_STATE(iorq->mode) != XY_SUB_NORM) 1826 /* is it active? */ 1827 continue; 1828 1829 if (blastmode == XY_RSET_ALL || 1830 blastmode != iorq) { 1831 /* failed */ 1832 iorq->errno = error; 1833 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1834 switch (XY_STATE(iorq->mode)) { 1835 case XY_SUB_NORM: 1836 iorq->buf->b_error = EIO; 1837 iorq->buf->b_flags |= B_ERROR; 1838 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1839 1840 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1841 iorq->dmamap->dm_mapsize, 1842 (iorq->buf->b_flags & B_READ) 1843 ? BUS_DMASYNC_POSTREAD 1844 : BUS_DMASYNC_POSTWRITE); 1845 1846 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1847 1848 (void)BUFQ_GET(iorq->xy->xyq); 1849 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1850 (xycsc->reqs[lcv].buf->b_bcount - 1851 xycsc->reqs[lcv].buf->b_resid), 1852 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1853 biodone(iorq->buf); 1854 iorq->mode = XY_SUB_FREE; 1855 break; 1856 case XY_SUB_WAIT: 1857 wakeup(iorq); 1858 case XY_SUB_POLL: 1859 iorq->mode = 1860 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1861 break; 1862 } 1863 1864 } else { 1865 1866 /* resubmit, no need to do anything here */ 1867 } 1868 } 1869 1870 /* 1871 * now, if stuff is waiting, start it. 1872 * since we just reset it should go 1873 */ 1874 xyc_start(xycsc, NULL); 1875 1876 return (retval); 1877 } 1878 1879 /* 1880 * xyc_start: start waiting buffers 1881 */ 1882 1883 void 1884 xyc_start(xycsc, iorq) 1885 struct xyc_softc *xycsc; 1886 struct xy_iorq *iorq; 1887 1888 { 1889 int lcv; 1890 struct xy_softc *xy; 1891 1892 if (iorq == NULL) { 1893 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1894 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1895 if (BUFQ_PEEK(xy->xyq) == NULL) continue; 1896 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1897 xyc_startbuf(xycsc, xy, BUFQ_PEEK(xy->xyq)); 1898 } 1899 } 1900 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1901 } 1902 1903 /* 1904 * xyc_remove_iorq: remove "done" IOPB's. 1905 */ 1906 1907 int 1908 xyc_remove_iorq(xycsc) 1909 struct xyc_softc *xycsc; 1910 1911 { 1912 int errno, rq, comm, errs; 1913 struct xyc *xyc = xycsc->xyc; 1914 u_long addr; 1915 struct xy_iopb *iopb; 1916 struct xy_iorq *iorq; 1917 struct buf *bp; 1918 1919 if (xyc->xyc_csr & XYC_DERR) { 1920 /* 1921 * DOUBLE ERROR: should never happen under normal use. This 1922 * error is so bad, you can't even tell which IOPB is bad, so 1923 * we dump them all. 1924 */ 1925 errno = XY_ERR_DERR; 1926 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1927 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1928 printf("%s: soft reset failed!\n", 1929 xycsc->sc_dev.dv_xname); 1930 panic("xyc_remove_iorq: controller DEAD"); 1931 } 1932 return (XY_ERR_AOK); 1933 } 1934 1935 /* 1936 * get iopb that is done, loop down the chain 1937 */ 1938 1939 if (xyc->xyc_csr & XYC_ERR) { 1940 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1941 } 1942 if (xyc->xyc_csr & XYC_IPND) { 1943 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1944 } 1945 1946 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1947 iorq = xycsc->xy_chain[rq]; 1948 if (iorq == NULL) break; /* done ! */ 1949 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1950 continue; /* free, or done */ 1951 iopb = iorq->iopb; 1952 if (iopb->done == 0) 1953 continue; /* not done yet */ 1954 1955 comm = iopb->com; 1956 errs = iopb->errs; 1957 1958 if (errs) 1959 iorq->errno = iopb->errno; 1960 else 1961 iorq->errno = 0; 1962 1963 /* handle non-fatal errors */ 1964 1965 if (errs && 1966 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1967 continue; /* AOK: we resubmitted it */ 1968 1969 1970 /* this iorq is now done (hasn't been restarted or anything) */ 1971 1972 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1973 xyc_perror(iorq, iopb, 0); 1974 1975 /* now, if read/write check to make sure we got all the data 1976 * we needed. (this may not be the case if we got an error in 1977 * the middle of a multisector request). */ 1978 1979 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1980 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1981 /* we just successfully processed a bad144 sector 1982 * note: if we are in bad 144 mode, the pointers have 1983 * been advanced already (see above) and are pointing 1984 * at the bad144 sector. to exit bad144 mode, we 1985 * must advance the pointers 1 sector and issue a new 1986 * request if there are still sectors left to process 1987 * 1988 */ 1989 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1990 1991 /* exit b144 mode */ 1992 iorq->mode = iorq->mode & (~XY_MODE_B144); 1993 1994 if (iorq->sectcnt) { /* more to go! */ 1995 iorq->lasterror = iorq->errno = iopb->errno = 0; 1996 iopb->errs = iopb->done = 0; 1997 iorq->tries = 0; 1998 iopb->scnt = iorq->sectcnt; 1999 iopb->cyl = iorq->blockno / 2000 iorq->xy->sectpercyl; 2001 iopb->head = 2002 (iorq->blockno / iorq->xy->nhead) % 2003 iorq->xy->nhead; 2004 iopb->sect = iorq->blockno % XYFM_BPS; 2005 addr = (u_long) iorq->dbuf; 2006 iopb->dataa = (addr & 0xffff); 2007 iopb->datar = ((addr & 0xff0000) >> 16); 2008 /* will resubit at end */ 2009 continue; 2010 } 2011 } 2012 /* final cleanup, totally done with this request */ 2013 2014 switch (XY_STATE(iorq->mode)) { 2015 case XY_SUB_NORM: 2016 bp = iorq->buf; 2017 if (errs) { 2018 bp->b_error = EIO; 2019 bp->b_flags |= B_ERROR; 2020 bp->b_resid = iorq->sectcnt * XYFM_BPS; 2021 } else { 2022 bp->b_resid = 0; /* done */ 2023 } 2024 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2025 iorq->dmamap->dm_mapsize, 2026 (iorq->buf->b_flags & B_READ) 2027 ? BUS_DMASYNC_POSTREAD 2028 : BUS_DMASYNC_POSTWRITE); 2029 2030 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2031 2032 (void)BUFQ_GET(iorq->xy->xyq); 2033 disk_unbusy(&iorq->xy->sc_dk, 2034 (bp->b_bcount - bp->b_resid), 2035 (bp->b_flags & B_READ)); 2036 iorq->mode = XY_SUB_FREE; 2037 biodone(bp); 2038 break; 2039 case XY_SUB_WAIT: 2040 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2041 wakeup(iorq); 2042 break; 2043 case XY_SUB_POLL: 2044 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2045 break; 2046 } 2047 } 2048 2049 return (XY_ERR_AOK); 2050 } 2051 2052 /* 2053 * xyc_perror: print error. 2054 * - if still_trying is true: we got an error, retried and got a 2055 * different error. in that case lasterror is the old error, 2056 * and errno is the new one. 2057 * - if still_trying is not true, then if we ever had an error it 2058 * is in lasterror. also, if iorq->errno == 0, then we recovered 2059 * from that error (otherwise iorq->errno == iorq->lasterror). 2060 */ 2061 void 2062 xyc_perror(iorq, iopb, still_trying) 2063 struct xy_iorq *iorq; 2064 struct xy_iopb *iopb; 2065 int still_trying; 2066 2067 { 2068 2069 int error = iorq->lasterror; 2070 2071 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 2072 : iorq->xyc->sc_dev.dv_xname); 2073 if (iorq->buf) 2074 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2075 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2076 printf("%s %d/%d/%d: ", 2077 (iopb->com == XYCMD_RD) ? "read" : "write", 2078 iopb->cyl, iopb->head, iopb->sect); 2079 printf("%s", xyc_e2str(error)); 2080 2081 if (still_trying) 2082 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 2083 else 2084 if (iorq->errno == 0) 2085 printf(" [recovered in %d tries]", iorq->tries); 2086 2087 printf("\n"); 2088 } 2089 2090 /* 2091 * xyc_error: non-fatal error encountered... recover. 2092 * return AOK if resubmitted, return FAIL if this iopb is done 2093 */ 2094 int 2095 xyc_error(xycsc, iorq, iopb, comm) 2096 struct xyc_softc *xycsc; 2097 struct xy_iorq *iorq; 2098 struct xy_iopb *iopb; 2099 int comm; 2100 2101 { 2102 int errno = iorq->errno; 2103 int erract = xyc_entoact(errno); 2104 int oldmode, advance; 2105 #ifdef __sparc__ 2106 int i; 2107 #endif 2108 2109 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2110 oldmode = iorq->mode; 2111 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2112 /* make xyc_start ignore us */ 2113 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 2114 iorq->mode = oldmode; 2115 } 2116 /* check for read/write to a sector in bad144 table if bad: redirect 2117 * request to bad144 area */ 2118 2119 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2120 (iorq->mode & XY_MODE_B144) == 0) { 2121 advance = iorq->sectcnt - iopb->scnt; 2122 XYC_ADVANCE(iorq, advance); 2123 #ifdef __sparc__ 2124 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2125 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2126 iorq->blockno % iorq->xy->nsect)) != -1) { 2127 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2128 * redirect */ 2129 iopb->errno = iopb->done = iopb->errs = 0; 2130 iopb->scnt = 1; 2131 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2132 /* second to last acyl */ 2133 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2134 * standard */ 2135 iopb->head = i / iorq->xy->nhead; 2136 iopb->sect = i % iorq->xy->nhead; 2137 /* will resubmit when we come out of remove_iorq */ 2138 return (XY_ERR_AOK); /* recovered! */ 2139 } 2140 #endif 2141 } 2142 2143 /* 2144 * it isn't a bad144 sector, must be real error! see if we can retry 2145 * it? 2146 */ 2147 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2148 xyc_perror(iorq, iopb, 1); /* inform of error state 2149 * change */ 2150 iorq->lasterror = errno; 2151 2152 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2153 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2154 iorq->tries++; 2155 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2156 /* will resubmit at end of remove_iorq */ 2157 return (XY_ERR_AOK); /* recovered! */ 2158 } 2159 2160 /* failed to recover from this error */ 2161 return (XY_ERR_FAIL); 2162 } 2163 2164 /* 2165 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2166 */ 2167 void 2168 xyc_tick(arg) 2169 void *arg; 2170 2171 { 2172 struct xyc_softc *xycsc = arg; 2173 int lcv, s, reset = 0; 2174 2175 /* reduce ttl for each request if one goes to zero, reset xyc */ 2176 s = splbio(); 2177 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2178 if (xycsc->reqs[lcv].mode == 0 || 2179 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2180 continue; 2181 xycsc->reqs[lcv].ttl--; 2182 if (xycsc->reqs[lcv].ttl == 0) 2183 reset = 1; 2184 } 2185 if (reset) { 2186 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2187 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2188 } 2189 splx(s); 2190 2191 /* until next time */ 2192 2193 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2194 } 2195 2196 /* 2197 * xyc_ioctlcmd: this function provides a user level interface to the 2198 * controller via ioctl. this allows "format" programs to be written 2199 * in user code, and is also useful for some debugging. we return 2200 * an error code. called at user priority. 2201 * 2202 * XXX missing a few commands (see the 7053 driver for ideas) 2203 */ 2204 int 2205 xyc_ioctlcmd(xy, dev, xio) 2206 struct xy_softc *xy; 2207 dev_t dev; 2208 struct xd_iocmd *xio; 2209 2210 { 2211 int s, rqno, dummy = 0; 2212 caddr_t dvmabuf = NULL, buf = NULL; 2213 struct xyc_softc *xycsc; 2214 int rseg, error; 2215 bus_dma_segment_t seg; 2216 2217 /* check sanity of requested command */ 2218 2219 switch (xio->cmd) { 2220 2221 case XYCMD_NOP: /* no op: everything should be zero */ 2222 if (xio->subfn || xio->dptr || xio->dlen || 2223 xio->block || xio->sectcnt) 2224 return (EINVAL); 2225 break; 2226 2227 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2228 case XYCMD_WR: 2229 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2230 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2231 return (EINVAL); 2232 break; 2233 2234 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2235 return (EINVAL); 2236 2237 break; 2238 2239 default: 2240 return (EINVAL);/* ??? */ 2241 } 2242 2243 xycsc = xy->parent; 2244 2245 /* create DVMA buffer for request if needed */ 2246 if (xio->dlen) { 2247 bus_addr_t busbuf; 2248 2249 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2250 &seg, &rseg, 2251 xio->dlen, &buf, 2252 &busbuf)) != 0) { 2253 return (error); 2254 } 2255 dvmabuf = (caddr_t)(u_long)BUS_ADDR_PADDR(busbuf); 2256 2257 if (xio->cmd == XYCMD_WR) { 2258 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2259 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2260 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2261 return (error); 2262 } 2263 } 2264 } 2265 /* do it! */ 2266 2267 error = 0; 2268 s = splbio(); 2269 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2270 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2271 if (rqno == XY_ERR_FAIL) { 2272 error = EIO; 2273 goto done; 2274 } 2275 xio->errno = xycsc->ciorq->errno; 2276 xio->tries = xycsc->ciorq->tries; 2277 XYC_DONE(xycsc, dummy); 2278 2279 if (xio->cmd == XYCMD_RD) 2280 error = copyout(buf, xio->dptr, xio->dlen); 2281 2282 done: 2283 splx(s); 2284 if (dvmabuf) { 2285 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2286 xio->dlen, buf); 2287 } 2288 return (error); 2289 } 2290 2291 /* 2292 * xyc_e2str: convert error code number into an error string 2293 */ 2294 const char * 2295 xyc_e2str(no) 2296 int no; 2297 { 2298 switch (no) { 2299 case XY_ERR_FAIL: 2300 return ("Software fatal error"); 2301 case XY_ERR_DERR: 2302 return ("DOUBLE ERROR"); 2303 case XY_ERR_AOK: 2304 return ("Successful completion"); 2305 case XY_ERR_IPEN: 2306 return("Interrupt pending"); 2307 case XY_ERR_BCFL: 2308 return("Busy conflict"); 2309 case XY_ERR_TIMO: 2310 return("Operation timeout"); 2311 case XY_ERR_NHDR: 2312 return("Header not found"); 2313 case XY_ERR_HARD: 2314 return("Hard ECC error"); 2315 case XY_ERR_ICYL: 2316 return("Illegal cylinder address"); 2317 case XY_ERR_ISEC: 2318 return("Illegal sector address"); 2319 case XY_ERR_SMAL: 2320 return("Last sector too small"); 2321 case XY_ERR_SACK: 2322 return("Slave ACK error (non-existent memory)"); 2323 case XY_ERR_CHER: 2324 return("Cylinder and head/header error"); 2325 case XY_ERR_SRTR: 2326 return("Auto-seek retry successful"); 2327 case XY_ERR_WPRO: 2328 return("Write-protect error"); 2329 case XY_ERR_UIMP: 2330 return("Unimplemented command"); 2331 case XY_ERR_DNRY: 2332 return("Drive not ready"); 2333 case XY_ERR_SZER: 2334 return("Sector count zero"); 2335 case XY_ERR_DFLT: 2336 return("Drive faulted"); 2337 case XY_ERR_ISSZ: 2338 return("Illegal sector size"); 2339 case XY_ERR_SLTA: 2340 return("Self test A"); 2341 case XY_ERR_SLTB: 2342 return("Self test B"); 2343 case XY_ERR_SLTC: 2344 return("Self test C"); 2345 case XY_ERR_SOFT: 2346 return("Soft ECC error"); 2347 case XY_ERR_SFOK: 2348 return("Soft ECC error recovered"); 2349 case XY_ERR_IHED: 2350 return("Illegal head"); 2351 case XY_ERR_DSEQ: 2352 return("Disk sequencer error"); 2353 case XY_ERR_SEEK: 2354 return("Seek error"); 2355 default: 2356 return ("Unknown error"); 2357 } 2358 } 2359 2360 int 2361 xyc_entoact(errno) 2362 2363 int errno; 2364 2365 { 2366 switch (errno) { 2367 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2368 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2369 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2370 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2371 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2372 2373 return(XY_ERA_PROG); /* program error ! */ 2374 2375 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2376 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2377 case XY_ERR_SOFT: 2378 2379 return(XY_ERA_HARD); /* hard error, retry */ 2380 2381 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2382 2383 return(XY_ERA_RSET); /* hard error reset */ 2384 2385 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2386 2387 return(XY_ERA_SOFT); /* an FYI error */ 2388 2389 case XY_ERR_WPRO: 2390 2391 return(XY_ERA_WPRO); /* write protect */ 2392 } 2393 2394 return(XY_ERA_PROG); /* ??? */ 2395 } 2396
Indexes created Thu Oct 16 14:10:15 GMT 2025