xy.c revision 1.28
1 /* $NetBSD: xy.c,v 1.28 2000/07/07 21:12:21 pk 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 <uvm/uvm_extern.h> 77 78 #include <machine/bus.h> 79 #include <machine/intr.h> 80 81 #if defined(__sparc__) || defined(sun3) 82 #include <dev/sun/disklabel.h> 83 #endif 84 85 #include <dev/vme/vmereg.h> 86 #include <dev/vme/vmevar.h> 87 88 #include <dev/vme/xyreg.h> 89 #include <dev/vme/xyvar.h> 90 #include <dev/vme/xio.h> 91 92 #include "locators.h" 93 94 /* 95 * macros 96 */ 97 98 /* 99 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 100 */ 101 #define XYC_GO(XYC, ADDR) { \ 102 (XYC)->xyc_addr_lo = ((ADDR) & 0xff); \ 103 (ADDR) = ((ADDR) >> 8); \ 104 (XYC)->xyc_addr_hi = ((ADDR) & 0xff); \ 105 (ADDR) = ((ADDR) >> 8); \ 106 (XYC)->xyc_reloc_lo = ((ADDR) & 0xff); \ 107 (ADDR) = ((ADDR) >> 8); \ 108 (XYC)->xyc_reloc_hi = (ADDR); \ 109 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 110 } 111 112 /* 113 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 114 */ 115 116 #define XYC_DONE(SC,ER) { \ 117 if ((ER) == XY_ERR_AOK) { \ 118 (ER) = (SC)->ciorq->errno; \ 119 (SC)->ciorq->mode = XY_SUB_FREE; \ 120 wakeup((SC)->ciorq); \ 121 } \ 122 } 123 124 /* 125 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 126 */ 127 128 #define XYC_ADVANCE(IORQ, N) { \ 129 if (N) { \ 130 (IORQ)->sectcnt -= (N); \ 131 (IORQ)->blockno += (N); \ 132 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 133 } \ 134 } 135 136 /* 137 * note - addresses you can sleep on: 138 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 139 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 140 */ 141 142 143 /* 144 * function prototypes 145 * "xyc_*" functions are internal, all others are external interfaces 146 */ 147 148 extern int pil_to_vme[]; /* from obio.c */ 149 150 /* internals */ 151 struct xy_iopb *xyc_chain __P((struct xyc_softc *, struct xy_iorq *)); 152 int xyc_cmd __P((struct xyc_softc *, int, int, int, int, int, char *, int)); 153 char *xyc_e2str __P((int)); 154 int xyc_entoact __P((int)); 155 int xyc_error __P((struct xyc_softc *, struct xy_iorq *, 156 struct xy_iopb *, int)); 157 int xyc_ioctlcmd __P((struct xy_softc *, dev_t dev, struct xd_iocmd *)); 158 void xyc_perror __P((struct xy_iorq *, struct xy_iopb *, int)); 159 int xyc_piodriver __P((struct xyc_softc *, struct xy_iorq *)); 160 int xyc_remove_iorq __P((struct xyc_softc *)); 161 int xyc_reset __P((struct xyc_softc *, int, struct xy_iorq *, int, 162 struct xy_softc *)); 163 inline void xyc_rqinit __P((struct xy_iorq *, struct xyc_softc *, 164 struct xy_softc *, int, u_long, int, 165 caddr_t, struct buf *)); 166 void xyc_rqtopb __P((struct xy_iorq *, struct xy_iopb *, int, int)); 167 void xyc_start __P((struct xyc_softc *, struct xy_iorq *)); 168 int xyc_startbuf __P((struct xyc_softc *, struct xy_softc *, struct buf *)); 169 int xyc_submit_iorq __P((struct xyc_softc *, struct xy_iorq *, int)); 170 void xyc_tick __P((void *)); 171 int xyc_unbusy __P((struct xyc *, int)); 172 void xyc_xyreset __P((struct xyc_softc *, struct xy_softc *)); 173 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 174 int *, bus_size_t, caddr_t *, bus_addr_t *); 175 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 176 int, bus_size_t, caddr_t); 177 178 /* machine interrupt hook */ 179 int xycintr __P((void *)); 180 181 /* autoconf */ 182 int xycmatch __P((struct device *, struct cfdata *, void *)); 183 void xycattach __P((struct device *, struct device *, void *)); 184 int xymatch __P((struct device *, struct cfdata *, void *)); 185 void xyattach __P((struct device *, struct device *, void *)); 186 static int xyc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 187 188 static void xydummystrat __P((struct buf *)); 189 int xygetdisklabel __P((struct xy_softc *, void *)); 190 191 bdev_decl(xy); 192 cdev_decl(xy); 193 194 /* 195 * cfattach's: device driver interface to autoconfig 196 */ 197 198 struct cfattach xyc_ca = { 199 sizeof(struct xyc_softc), xycmatch, xycattach 200 }; 201 202 struct cfattach xy_ca = { 203 sizeof(struct xy_softc), xymatch, xyattach 204 }; 205 206 extern struct cfdriver xy_cd; 207 208 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 209 int driveno; /* unit number */ 210 int fullmode; /* submit mode */ 211 int booting; /* are we booting or not? */ 212 }; 213 214 /* 215 * dkdriver 216 */ 217 218 struct dkdriver xydkdriver = { xystrategy }; 219 220 /* 221 * start: disk label fix code (XXX) 222 */ 223 224 static void *xy_labeldata; 225 226 static void 227 xydummystrat(bp) 228 struct buf *bp; 229 { 230 if (bp->b_bcount != XYFM_BPS) 231 panic("xydummystrat"); 232 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 233 bp->b_flags |= B_DONE; 234 bp->b_flags &= ~B_BUSY; 235 } 236 237 int 238 xygetdisklabel(xy, b) 239 struct xy_softc *xy; 240 void *b; 241 { 242 char *err; 243 #if defined(__sparc__) || defined(sun3) 244 struct sun_disklabel *sdl; 245 #endif 246 247 /* We already have the label data in `b'; setup for dummy strategy */ 248 xy_labeldata = b; 249 250 /* Required parameter for readdisklabel() */ 251 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 252 253 err = readdisklabel(MAKEDISKDEV(0, xy->sc_dev.dv_unit, RAW_PART), 254 xydummystrat, 255 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 256 if (err) { 257 printf("%s: %s\n", xy->sc_dev.dv_xname, err); 258 return(XY_ERR_FAIL); 259 } 260 261 #if defined(__sparc__) || defined(sun3) 262 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 263 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 264 if (sdl->sl_magic == SUN_DKMAGIC) { 265 xy->pcyl = sdl->sl_pcylinders; 266 } else 267 #endif 268 { 269 printf("%s: WARNING: no `pcyl' in disk label.\n", 270 xy->sc_dev.dv_xname); 271 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 272 xy->sc_dk.dk_label->d_acylinders; 273 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 274 xy->sc_dev.dv_xname, xy->pcyl); 275 } 276 277 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 278 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 279 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 280 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 281 xy->sectpercyl = xy->nhead * xy->nsect; 282 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 283 * sun->bsd */ 284 return(XY_ERR_AOK); 285 } 286 287 /* 288 * end: disk label fix code (XXX) 289 */ 290 291 /* 292 * Shorthand for allocating, mapping and loading a DMA buffer 293 */ 294 int 295 xy_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 296 bus_dma_tag_t tag; 297 bus_dmamap_t map; 298 bus_dma_segment_t *seg; 299 int *nsegp; 300 bus_size_t len; 301 caddr_t *kvap; 302 bus_addr_t *dmap; 303 { 304 int nseg; 305 int error; 306 307 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 308 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 309 return (error); 310 } 311 312 if ((error = bus_dmamap_load_raw(tag, map, 313 seg, nseg, len, BUS_DMA_NOWAIT)) != 0) { 314 bus_dmamem_free(tag, seg, nseg); 315 return (error); 316 } 317 318 if ((error = bus_dmamem_map(tag, seg, nseg, 319 len, kvap, 320 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 321 bus_dmamap_unload(tag, map); 322 bus_dmamem_free(tag, seg, nseg); 323 return (error); 324 } 325 326 *dmap = map->dm_segs[0].ds_addr; 327 *nsegp = nseg; 328 return (0); 329 } 330 331 void 332 xy_dmamem_free(tag, map, seg, nseg, len, kva) 333 bus_dma_tag_t tag; 334 bus_dmamap_t map; 335 bus_dma_segment_t *seg; 336 int nseg; 337 bus_size_t len; 338 caddr_t kva; 339 { 340 341 bus_dmamap_unload(tag, map); 342 bus_dmamem_unmap(tag, kva, len); 343 bus_dmamem_free(tag, seg, nseg); 344 } 345 346 347 /* 348 * a u t o c o n f i g f u n c t i o n s 349 */ 350 351 /* 352 * xycmatch: determine if xyc is present or not. we do a 353 * soft reset to detect the xyc. 354 */ 355 int 356 xyc_probe(arg, tag, handle) 357 void *arg; 358 bus_space_tag_t tag; 359 bus_space_handle_t handle; 360 { 361 struct xyc *xyc = (void *)handle; /* XXX */ 362 363 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 364 } 365 366 int xycmatch(parent, cf, aux) 367 struct device *parent; 368 struct cfdata *cf; 369 void *aux; 370 { 371 struct vme_attach_args *va = aux; 372 vme_chipset_tag_t ct = va->va_vct; 373 vme_am_t mod; 374 int error; 375 376 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 377 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 378 return (0); 379 380 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 381 mod, VME_D16, xyc_probe, 0); 382 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 383 384 return (error == 0); 385 } 386 387 /* 388 * xycattach: attach controller 389 */ 390 void 391 xycattach(parent, self, aux) 392 struct device *parent, *self; 393 void *aux; 394 395 { 396 struct xyc_softc *xyc = (void *) self; 397 struct vme_attach_args *va = aux; 398 vme_chipset_tag_t ct = va->va_vct; 399 bus_space_tag_t bt; 400 bus_space_handle_t bh; 401 vme_intr_handle_t ih; 402 vme_am_t mod; 403 struct xyc_attach_args xa; 404 int lcv, res, error; 405 bus_dma_segment_t seg; 406 int rseg; 407 vme_mapresc_t resc; 408 409 /* get addressing and intr level stuff from autoconfig and load it 410 * into our xyc_softc. */ 411 412 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 413 414 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 415 panic("xyc: vme alloc"); 416 417 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 418 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 419 panic("xyc: vme_map"); 420 421 xyc->xyc = (struct xyc *) bh; /* XXX */ 422 xyc->ipl = va->ilevel; 423 xyc->vector = va->ivector; 424 xyc->no_ols = 0; /* XXX should be from config */ 425 426 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 427 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 428 429 /* 430 * allocate and zero buffers 431 * check boundaries of the KVA's ... all IOPBs must reside in 432 * the same 64K region. 433 */ 434 435 /* Get DMA handle for misc. transfers */ 436 if ((error = vme_dmamap_create( 437 ct, /* VME chip tag */ 438 MAXPHYS, /* size */ 439 VME_AM_A24, /* address modifier */ 440 VME_D16, /* data size */ 441 0, /* swap */ 442 1, /* nsegments */ 443 MAXPHYS, /* maxsegsz */ 444 0, /* boundary */ 445 BUS_DMA_NOWAIT, 446 &xyc->reqs[lcv].dmamap)) != 0) { 447 448 printf("%s: DMA buffer map create error %d\n", 449 xyc->sc_dev.dv_xname, error); 450 return; 451 } 452 453 /* Get DMA handle for mapping iorq descriptors */ 454 if ((error = vme_dmamap_create( 455 ct, /* VME chip tag */ 456 XYC_MAXIOPB * sizeof(struct xy_iopb), 457 VME_AM_A24, /* address modifier */ 458 VME_D16, /* data size */ 459 0, /* swap */ 460 1, /* nsegments */ 461 XYC_MAXIOPB * sizeof(struct xy_iopb), 462 64*1024, /* boundary */ 463 BUS_DMA_NOWAIT, 464 &xyc->iopmap)) != 0) { 465 466 printf("%s: DMA buffer map create error %d\n", 467 xyc->sc_dev.dv_xname, error); 468 return; 469 } 470 471 /* Get DMA buffer for iorq descriptors */ 472 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 473 XYC_MAXIOPB * sizeof(struct xy_iopb), 474 (caddr_t *)&xyc->iopbase, 475 (bus_addr_t *)&xyc->dvmaiopb)) != 0) { 476 printf("%s: DMA buffer alloc error %d\n", 477 xyc->sc_dev.dv_xname, error); 478 return; 479 } 480 481 bzero(xyc->iopbase, XYC_MAXIOPB * sizeof(struct xy_iopb)); 482 483 xyc->reqs = (struct xy_iorq *) 484 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), M_DEVBUF, M_NOWAIT); 485 if (xyc->reqs == NULL) 486 panic("xyc malloc"); 487 bzero(xyc->reqs, XYC_MAXIOPB * sizeof(struct xy_iorq)); 488 489 /* 490 * init iorq to iopb pointers, and non-zero fields in the 491 * iopb which never change. 492 */ 493 494 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 495 xyc->xy_chain[lcv] = NULL; 496 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 497 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 498 xyc->iopbase[lcv].asr = 1; /* always the same */ 499 xyc->iopbase[lcv].eef = 1; /* always the same */ 500 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 501 xyc->iopbase[lcv].aud = 1; /* always the same */ 502 xyc->iopbase[lcv].relo = 1; /* always the same */ 503 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 504 505 if ((error = vme_dmamap_create( 506 ct, /* VME chip tag */ 507 MAXPHYS, /* size */ 508 VME_AM_A24, /* address modifier */ 509 VME_D16, /* data size */ 510 0, /* swap */ 511 1, /* nsegments */ 512 MAXPHYS, /* maxsegsz */ 513 0, /* boundary */ 514 BUS_DMA_NOWAIT, 515 &xyc->reqs[lcv].dmamap)) != 0) { 516 517 printf("%s: DMA buffer map create error %d\n", 518 xyc->sc_dev.dv_xname, error); 519 return; 520 } 521 } 522 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 523 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 524 xyc->xy_hand = 0; 525 526 /* read controller parameters and insure we have a 450/451 */ 527 528 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 529 res = xyc->ciopb->ctyp; 530 XYC_DONE(xyc, error); 531 if (res != XYCT_450) { 532 if (error) 533 printf(": %s: ", xyc_e2str(error)); 534 printf(": doesn't identify as a 450/451\n"); 535 return; 536 } 537 printf(": Xylogics 450/451"); 538 if (xyc->no_ols) 539 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 540 printf("\n"); 541 if (error) { 542 printf("%s: error: %s\n", xyc->sc_dev.dv_xname, 543 xyc_e2str(error)); 544 return; 545 } 546 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 547 printf("%s: 24 bit addressing turned off\n", 548 xyc->sc_dev.dv_xname); 549 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 550 printf("to enable 24 bit mode and this driver\n"); 551 return; 552 } 553 554 /* link in interrupt with higher level software */ 555 vme_intr_map(ct, va->ivector, va->ilevel, &ih); 556 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 557 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 558 xyc->sc_dev.dv_xname, "intr"); 559 560 callout_init(&xyc->sc_tick_ch); 561 562 /* now we must look for disks using autoconfig */ 563 xa.fullmode = XY_SUB_POLL; 564 xa.booting = 1; 565 566 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 567 (void) config_found(self, (void *) &xa, NULL); 568 569 /* start the watchdog clock */ 570 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 571 572 } 573 574 /* 575 * xymatch: probe for disk. 576 * 577 * note: we almost always say disk is present. this allows us to 578 * spin up and configure a disk after the system is booted (we can 579 * call xyattach!). 580 */ 581 int 582 xymatch(parent, cf, aux) 583 struct device *parent; 584 struct cfdata *cf; 585 void *aux; 586 { 587 struct xyc_attach_args *xa = aux; 588 589 /* looking for autoconf wildcard or exact match */ 590 591 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 592 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 593 return 0; 594 595 return 1; 596 597 } 598 599 /* 600 * xyattach: attach a disk. this can be called from autoconf and also 601 * from xyopen/xystrategy. 602 */ 603 void 604 xyattach(parent, self, aux) 605 struct device *parent, *self; 606 void *aux; 607 608 { 609 struct xy_softc *xy = (void *) self, *oxy; 610 struct xyc_softc *xyc = (void *) parent; 611 struct xyc_attach_args *xa = aux; 612 int spt, mb, blk, lcv, fmode, s = 0, newstate; 613 struct dkbad *dkb; 614 int rseg, error; 615 bus_dma_segment_t seg; 616 caddr_t dmaddr; 617 caddr_t buf; 618 619 /* 620 * Always re-initialize the disk structure. We want statistics 621 * to start with a clean slate. 622 */ 623 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 624 xy->sc_dk.dk_driver = &xydkdriver; 625 xy->sc_dk.dk_name = xy->sc_dev.dv_xname; 626 627 /* if booting, init the xy_softc */ 628 629 if (xa->booting) { 630 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 631 xy->flags = 0; 632 xy->parent = xyc; 633 634 /* init queue of waiting bufs */ 635 636 BUFQ_INIT(&xy->xyq); 637 638 xy->xyrq = &xyc->reqs[xa->driveno]; 639 640 } 641 xy->xy_drive = xa->driveno; 642 fmode = xa->fullmode; 643 xyc->sc_drives[xa->driveno] = xy; 644 645 /* if not booting, make sure we are the only process in the attach for 646 * this drive. if locked out, sleep on it. */ 647 648 if (!xa->booting) { 649 s = splbio(); 650 while (xy->state == XY_DRIVE_ATTACHING) { 651 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 652 splx(s); 653 return; 654 } 655 } 656 printf("%s at %s", 657 xy->sc_dev.dv_xname, xy->parent->sc_dev.dv_xname); 658 } 659 660 /* we now have control */ 661 xy->state = XY_DRIVE_ATTACHING; 662 newstate = XY_DRIVE_UNKNOWN; 663 664 buf = NULL; 665 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 666 XYFM_BPS, 667 (caddr_t *)&buf, 668 (bus_addr_t *)&dmaddr)) != 0) { 669 printf("%s: DMA buffer alloc error %d\n", 670 xyc->sc_dev.dv_xname, error); 671 return; 672 } 673 674 /* first try and reset the drive */ 675 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 676 XYC_DONE(xyc, error); 677 if (error == XY_ERR_DNRY) { 678 printf(" drive %d: off-line\n", xa->driveno); 679 goto done; 680 } 681 if (error) { 682 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 683 goto done; 684 } 685 printf(" drive %d: ready", xa->driveno); 686 687 /* 688 * now set drive parameters (to semi-bogus values) so we can read the 689 * disk label. 690 */ 691 xy->pcyl = xy->ncyl = 1; 692 xy->acyl = 0; 693 xy->nhead = 1; 694 xy->nsect = 1; 695 xy->sectpercyl = 1; 696 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 697 xy->dkb.bt_bad[lcv].bt_cyl = 698 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 699 700 /* read disk label */ 701 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 702 xy->drive_type++) { 703 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 704 dmaddr, fmode); 705 XYC_DONE(xyc, error); 706 if (error == XY_ERR_AOK) break; 707 } 708 709 if (error != XY_ERR_AOK) { 710 printf("\n%s: reading disk label failed: %s\n", 711 xy->sc_dev.dv_xname, xyc_e2str(error)); 712 goto done; 713 } 714 printf(" (drive type %d)\n", xy->drive_type); 715 716 newstate = XY_DRIVE_NOLABEL; 717 718 xy->hw_spt = spt = 0; /* XXX needed ? */ 719 /* Attach the disk: must be before getdisklabel to malloc label */ 720 disk_attach(&xy->sc_dk); 721 722 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 723 goto done; 724 725 /* inform the user of what is up */ 726 printf("%s: <%s>, pcyl %d\n", xy->sc_dev.dv_xname, 727 buf, xy->pcyl); 728 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 729 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 730 xy->sc_dev.dv_xname, mb, xy->ncyl, xy->nhead, xy->nsect, 731 XYFM_BPS); 732 733 /* 734 * 450/451 stupidity: the drive type is encoded into the format 735 * of the disk. the drive type in the IOPB must match the drive 736 * type in the format, or you will not be able to do I/O to the 737 * disk (you get header not found errors). if you have two drives 738 * of different sizes that have the same drive type in their 739 * formatting then you are out of luck. 740 * 741 * this problem was corrected in the 753/7053. 742 */ 743 744 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 745 oxy = xyc->sc_drives[lcv]; 746 if (oxy == NULL || oxy == xy) continue; 747 if (oxy->drive_type != xy->drive_type) continue; 748 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 749 xy->nhead != oxy->nhead) { 750 printf("%s: %s and %s must be the same size!\n", 751 xyc->sc_dev.dv_xname, xy->sc_dev.dv_xname, 752 oxy->sc_dev.dv_xname); 753 panic("xy drive size mismatch"); 754 } 755 } 756 757 758 /* now set the real drive parameters! */ 759 760 blk = (xy->nsect - 1) + 761 ((xy->nhead - 1) * xy->nsect) + 762 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 763 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 764 XYC_DONE(xyc, error); 765 if (error) { 766 printf("%s: write drive size failed: %s\n", 767 xy->sc_dev.dv_xname, xyc_e2str(error)); 768 goto done; 769 } 770 newstate = XY_DRIVE_ONLINE; 771 772 /* 773 * read bad144 table. this table resides on the first sector of the 774 * last track of the disk (i.e. second cyl of "acyl" area). 775 */ 776 777 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 778 /* last cyl */ 779 (xy->nhead - 1) * xy->nsect; /* last head */ 780 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 781 dmaddr, fmode); 782 XYC_DONE(xyc, error); 783 if (error) { 784 printf("%s: reading bad144 failed: %s\n", 785 xy->sc_dev.dv_xname, xyc_e2str(error)); 786 goto done; 787 } 788 789 /* check dkbad for sanity */ 790 dkb = (struct dkbad *) buf; 791 for (lcv = 0; lcv < 126; lcv++) { 792 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 793 dkb->bt_bad[lcv].bt_cyl == 0) && 794 dkb->bt_bad[lcv].bt_trksec == 0xffff) 795 continue; /* blank */ 796 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 797 break; 798 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 799 break; 800 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 801 break; 802 } 803 if (lcv != 126) { 804 printf("%s: warning: invalid bad144 sector!\n", 805 xy->sc_dev.dv_xname); 806 } else { 807 bcopy(buf, &xy->dkb, XYFM_BPS); 808 } 809 810 done: 811 if (buf != NULL) { 812 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 813 &seg, rseg, XYFM_BPS, buf); 814 } 815 816 xy->state = newstate; 817 if (!xa->booting) { 818 wakeup(&xy->state); 819 splx(s); 820 } 821 } 822 823 /* 824 * end of autoconfig functions 825 */ 826 827 /* 828 * { b , c } d e v s w f u n c t i o n s 829 */ 830 831 /* 832 * xyclose: close device 833 */ 834 int 835 xyclose(dev, flag, fmt, p) 836 dev_t dev; 837 int flag, fmt; 838 struct proc *p; 839 840 { 841 struct xy_softc *xy = xy_cd.cd_devs[DISKUNIT(dev)]; 842 int part = DISKPART(dev); 843 844 /* clear mask bits */ 845 846 switch (fmt) { 847 case S_IFCHR: 848 xy->sc_dk.dk_copenmask &= ~(1 << part); 849 break; 850 case S_IFBLK: 851 xy->sc_dk.dk_bopenmask &= ~(1 << part); 852 break; 853 } 854 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 855 856 return 0; 857 } 858 859 /* 860 * xydump: crash dump system 861 */ 862 int 863 xydump(dev, blkno, va, size) 864 dev_t dev; 865 daddr_t blkno; 866 caddr_t va; 867 size_t size; 868 { 869 int unit, part; 870 struct xy_softc *xy; 871 872 unit = DISKUNIT(dev); 873 if (unit >= xy_cd.cd_ndevs) 874 return ENXIO; 875 part = DISKPART(dev); 876 877 xy = xy_cd.cd_devs[unit]; 878 879 printf("%s%c: crash dump not supported (yet)\n", xy->sc_dev.dv_xname, 880 'a' + part); 881 882 return ENXIO; 883 884 /* outline: globals: "dumplo" == sector number of partition to start 885 * dump at (convert to physical sector with partition table) 886 * "dumpsize" == size of dump in clicks "physmem" == size of physical 887 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 888 * physmem) 889 * 890 * dump a copy of physical memory to the dump device starting at sector 891 * "dumplo" in the swap partition (make sure > 0). map in pages as 892 * we go. use polled I/O. 893 * 894 * XXX how to handle NON_CONTIG? */ 895 896 } 897 898 /* 899 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 900 */ 901 int 902 xyioctl(dev, command, addr, flag, p) 903 dev_t dev; 904 u_long command; 905 caddr_t addr; 906 int flag; 907 struct proc *p; 908 909 { 910 struct xy_softc *xy; 911 struct xd_iocmd *xio; 912 int error, s, unit; 913 914 unit = DISKUNIT(dev); 915 916 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 917 return (ENXIO); 918 919 /* switch on ioctl type */ 920 921 switch (command) { 922 case DIOCSBAD: /* set bad144 info */ 923 if ((flag & FWRITE) == 0) 924 return EBADF; 925 s = splbio(); 926 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 927 splx(s); 928 return 0; 929 930 case DIOCGDINFO: /* get disk label */ 931 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 932 return 0; 933 934 case DIOCGPART: /* get partition info */ 935 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 936 ((struct partinfo *) addr)->part = 937 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 938 return 0; 939 940 case DIOCSDINFO: /* set disk label */ 941 if ((flag & FWRITE) == 0) 942 return EBADF; 943 error = setdisklabel(xy->sc_dk.dk_label, 944 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 945 xy->sc_dk.dk_cpulabel); 946 if (error == 0) { 947 if (xy->state == XY_DRIVE_NOLABEL) 948 xy->state = XY_DRIVE_ONLINE; 949 } 950 return error; 951 952 case DIOCWLABEL: /* change write status of disk label */ 953 if ((flag & FWRITE) == 0) 954 return EBADF; 955 if (*(int *) addr) 956 xy->flags |= XY_WLABEL; 957 else 958 xy->flags &= ~XY_WLABEL; 959 return 0; 960 961 case DIOCWDINFO: /* write disk label */ 962 if ((flag & FWRITE) == 0) 963 return EBADF; 964 error = setdisklabel(xy->sc_dk.dk_label, 965 (struct disklabel *) addr, /* xy->sc_dk.dk_openmask : */ 0, 966 xy->sc_dk.dk_cpulabel); 967 if (error == 0) { 968 if (xy->state == XY_DRIVE_NOLABEL) 969 xy->state = XY_DRIVE_ONLINE; 970 971 /* Simulate opening partition 0 so write succeeds. */ 972 xy->sc_dk.dk_openmask |= (1 << 0); 973 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 974 xystrategy, xy->sc_dk.dk_label, 975 xy->sc_dk.dk_cpulabel); 976 xy->sc_dk.dk_openmask = 977 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 978 } 979 return error; 980 981 case DIOSXDCMD: 982 xio = (struct xd_iocmd *) addr; 983 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 984 return (error); 985 return (xyc_ioctlcmd(xy, dev, xio)); 986 987 default: 988 return ENOTTY; 989 } 990 } 991 992 /* 993 * xyopen: open drive 994 */ 995 996 int 997 xyopen(dev, flag, fmt, p) 998 dev_t dev; 999 int flag, fmt; 1000 struct proc *p; 1001 { 1002 int unit, part; 1003 struct xy_softc *xy; 1004 struct xyc_attach_args xa; 1005 1006 /* first, could it be a valid target? */ 1007 1008 unit = DISKUNIT(dev); 1009 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == NULL) 1010 return (ENXIO); 1011 part = DISKPART(dev); 1012 1013 /* do we need to attach the drive? */ 1014 1015 if (xy->state == XY_DRIVE_UNKNOWN) { 1016 xa.driveno = xy->xy_drive; 1017 xa.fullmode = XY_SUB_WAIT; 1018 xa.booting = 0; 1019 xyattach((struct device *) xy->parent, 1020 (struct device *) xy, &xa); 1021 if (xy->state == XY_DRIVE_UNKNOWN) { 1022 return (EIO); 1023 } 1024 } 1025 /* check for partition */ 1026 1027 if (part != RAW_PART && 1028 (part >= xy->sc_dk.dk_label->d_npartitions || 1029 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1030 return (ENXIO); 1031 } 1032 /* set open masks */ 1033 1034 switch (fmt) { 1035 case S_IFCHR: 1036 xy->sc_dk.dk_copenmask |= (1 << part); 1037 break; 1038 case S_IFBLK: 1039 xy->sc_dk.dk_bopenmask |= (1 << part); 1040 break; 1041 } 1042 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1043 1044 return 0; 1045 } 1046 1047 int 1048 xyread(dev, uio, flags) 1049 dev_t dev; 1050 struct uio *uio; 1051 int flags; 1052 { 1053 1054 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1055 } 1056 1057 int 1058 xywrite(dev, uio, flags) 1059 dev_t dev; 1060 struct uio *uio; 1061 int flags; 1062 { 1063 1064 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1065 } 1066 1067 1068 /* 1069 * xysize: return size of a partition for a dump 1070 */ 1071 1072 int 1073 xysize(dev) 1074 dev_t dev; 1075 1076 { 1077 struct xy_softc *xysc; 1078 int unit, part, size, omask; 1079 1080 /* valid unit? */ 1081 unit = DISKUNIT(dev); 1082 if (unit >= xy_cd.cd_ndevs || (xysc = xy_cd.cd_devs[unit]) == NULL) 1083 return (-1); 1084 1085 part = DISKPART(dev); 1086 omask = xysc->sc_dk.dk_openmask & (1 << part); 1087 1088 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1089 return (-1); 1090 1091 /* do it */ 1092 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1093 size = -1; /* only give valid size for swap partitions */ 1094 else 1095 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1096 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1097 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1098 return (-1); 1099 return (size); 1100 } 1101 1102 /* 1103 * xystrategy: buffering system interface to xy. 1104 */ 1105 1106 void 1107 xystrategy(bp) 1108 struct buf *bp; 1109 1110 { 1111 struct xy_softc *xy; 1112 int s, unit; 1113 struct xyc_attach_args xa; 1114 struct disklabel *lp; 1115 daddr_t blkno; 1116 1117 unit = DISKUNIT(bp->b_dev); 1118 1119 /* check for live device */ 1120 1121 if (unit >= xy_cd.cd_ndevs || (xy = xy_cd.cd_devs[unit]) == 0 || 1122 bp->b_blkno < 0 || 1123 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1124 bp->b_error = EINVAL; 1125 goto bad; 1126 } 1127 /* do we need to attach the drive? */ 1128 1129 if (xy->state == XY_DRIVE_UNKNOWN) { 1130 xa.driveno = xy->xy_drive; 1131 xa.fullmode = XY_SUB_WAIT; 1132 xa.booting = 0; 1133 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1134 if (xy->state == XY_DRIVE_UNKNOWN) { 1135 bp->b_error = EIO; 1136 goto bad; 1137 } 1138 } 1139 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1140 /* no I/O to unlabeled disks, unless raw partition */ 1141 bp->b_error = EIO; 1142 goto bad; 1143 } 1144 /* short circuit zero length request */ 1145 1146 if (bp->b_bcount == 0) 1147 goto done; 1148 1149 /* check bounds with label (disksubr.c). Determine the size of the 1150 * transfer, and make sure it is within the boundaries of the 1151 * partition. Adjust transfer if needed, and signal errors or early 1152 * completion. */ 1153 1154 lp = xy->sc_dk.dk_label; 1155 1156 if (bounds_check_with_label(bp, lp, 1157 (xy->flags & XY_WLABEL) != 0) <= 0) 1158 goto done; 1159 1160 /* 1161 * Now convert the block number to absolute and put it in 1162 * terms of the device's logical block size. 1163 */ 1164 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1165 if (DISKPART(bp->b_dev) != RAW_PART) 1166 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1167 1168 bp->b_rawblkno = blkno; 1169 1170 /* 1171 * now we know we have a valid buf structure that we need to do I/O 1172 * on. 1173 */ 1174 s = splbio(); /* protect the queues */ 1175 1176 disksort_blkno(&xy->xyq, bp); 1177 1178 /* start 'em up */ 1179 1180 xyc_start(xy->parent, NULL); 1181 1182 /* done! */ 1183 1184 splx(s); 1185 return; 1186 1187 bad: /* tells upper layers we have an error */ 1188 bp->b_flags |= B_ERROR; 1189 done: /* tells upper layers we are done with this 1190 * buf */ 1191 bp->b_resid = bp->b_bcount; 1192 biodone(bp); 1193 } 1194 /* 1195 * end of {b,c}devsw functions 1196 */ 1197 1198 /* 1199 * i n t e r r u p t f u n c t i o n 1200 * 1201 * xycintr: hardware interrupt. 1202 */ 1203 int 1204 xycintr(v) 1205 void *v; 1206 1207 { 1208 struct xyc_softc *xycsc = v; 1209 1210 /* kick the event counter */ 1211 1212 xycsc->sc_intrcnt.ev_count++; 1213 1214 /* remove as many done IOPBs as possible */ 1215 1216 xyc_remove_iorq(xycsc); 1217 1218 /* start any iorq's already waiting */ 1219 1220 xyc_start(xycsc, NULL); 1221 1222 return (1); 1223 } 1224 /* 1225 * end of interrupt function 1226 */ 1227 1228 /* 1229 * i n t e r n a l f u n c t i o n s 1230 */ 1231 1232 /* 1233 * xyc_rqinit: fill out the fields of an I/O request 1234 */ 1235 1236 inline void 1237 xyc_rqinit(rq, xyc, xy, md, blk, cnt, db, bp) 1238 struct xy_iorq *rq; 1239 struct xyc_softc *xyc; 1240 struct xy_softc *xy; 1241 int md; 1242 u_long blk; 1243 int cnt; 1244 caddr_t db; 1245 struct buf *bp; 1246 { 1247 rq->xyc = xyc; 1248 rq->xy = xy; 1249 rq->ttl = XYC_MAXTTL + 10; 1250 rq->mode = md; 1251 rq->tries = rq->errno = rq->lasterror = 0; 1252 rq->blockno = blk; 1253 rq->sectcnt = cnt; 1254 rq->dbuf = db; 1255 rq->buf = bp; 1256 } 1257 1258 /* 1259 * xyc_rqtopb: load up an IOPB based on an iorq 1260 */ 1261 1262 void 1263 xyc_rqtopb(iorq, iopb, cmd, subfun) 1264 struct xy_iorq *iorq; 1265 struct xy_iopb *iopb; 1266 int cmd, subfun; 1267 1268 { 1269 u_long block, dp; 1270 1271 /* normal IOPB case, standard stuff */ 1272 1273 /* chain bit handled later */ 1274 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1275 iopb->com = cmd; 1276 iopb->errno = 0; 1277 iopb->errs = 0; 1278 iopb->done = 0; 1279 if (iorq->xy) { 1280 iopb->unit = iorq->xy->xy_drive; 1281 iopb->dt = iorq->xy->drive_type; 1282 } else { 1283 iopb->unit = 0; 1284 iopb->dt = 0; 1285 } 1286 block = iorq->blockno; 1287 if (iorq->xy == NULL || block == 0) { 1288 iopb->sect = iopb->head = iopb->cyl = 0; 1289 } else { 1290 iopb->sect = block % iorq->xy->nsect; 1291 block = block / iorq->xy->nsect; 1292 iopb->head = block % iorq->xy->nhead; 1293 block = block / iorq->xy->nhead; 1294 iopb->cyl = block; 1295 } 1296 iopb->scnt = iorq->sectcnt; 1297 dp = (u_long) iorq->dbuf; 1298 if (iorq->dbuf == NULL) { 1299 iopb->dataa = 0; 1300 iopb->datar = 0; 1301 } else { 1302 iopb->dataa = (dp & 0xffff); 1303 iopb->datar = ((dp & 0xff0000) >> 16); 1304 } 1305 iopb->subfn = subfun; 1306 } 1307 1308 1309 /* 1310 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1311 */ 1312 1313 int 1314 xyc_unbusy(xyc, del) 1315 1316 struct xyc *xyc; 1317 int del; 1318 1319 { 1320 while (del-- > 0) { 1321 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1322 break; 1323 DELAY(1); 1324 } 1325 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1326 } 1327 1328 /* 1329 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1330 * note that NORM requests are handled seperately. 1331 */ 1332 int 1333 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1334 struct xyc_softc *xycsc; 1335 int cmd, subfn, unit, block, scnt; 1336 char *dptr; 1337 int fullmode; 1338 1339 { 1340 int submode = XY_STATE(fullmode); 1341 struct xy_iorq *iorq = xycsc->ciorq; 1342 struct xy_iopb *iopb = xycsc->ciopb; 1343 1344 /* 1345 * is someone else using the control iopq wait for it if we can 1346 */ 1347 start: 1348 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1349 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1350 return(XY_ERR_FAIL); 1351 goto start; 1352 } 1353 1354 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1355 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1356 iorq->mode = XY_SUB_FREE; 1357 printf("%s: stole control iopb\n", xycsc->sc_dev.dv_xname); 1358 } 1359 1360 /* init iorq/iopb */ 1361 1362 xyc_rqinit(iorq, xycsc, 1363 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1364 fullmode, block, scnt, dptr, NULL); 1365 1366 /* load IOPB from iorq */ 1367 1368 xyc_rqtopb(iorq, iopb, cmd, subfn); 1369 1370 /* submit it for processing */ 1371 1372 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1373 1374 return(XY_ERR_AOK); 1375 } 1376 1377 /* 1378 * xyc_startbuf 1379 * start a buffer for running 1380 */ 1381 1382 int 1383 xyc_startbuf(xycsc, xysc, bp) 1384 struct xyc_softc *xycsc; 1385 struct xy_softc *xysc; 1386 struct buf *bp; 1387 1388 { 1389 int partno, error; 1390 struct xy_iorq *iorq; 1391 struct xy_iopb *iopb; 1392 u_long block; 1393 1394 iorq = xysc->xyrq; 1395 iopb = iorq->iopb; 1396 1397 /* get buf */ 1398 1399 if (bp == NULL) 1400 panic("xyc_startbuf null buf"); 1401 1402 partno = DISKPART(bp->b_dev); 1403 #ifdef XYC_DEBUG 1404 printf("xyc_startbuf: %s%c: %s block %d\n", xysc->sc_dev.dv_xname, 1405 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1406 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1407 bp->b_bcount, bp->b_data); 1408 #endif 1409 1410 /* 1411 * load request. 1412 * 1413 * note that iorq points to the buffer as mapped into DVMA space, 1414 * where as the bp->b_data points to its non-DVMA mapping. 1415 */ 1416 1417 block = bp->b_rawblkno; 1418 1419 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1420 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1421 if (error != 0) { 1422 printf("%s: warning: cannot load DMA map\n", 1423 xycsc->sc_dev.dv_xname); 1424 return (XY_ERR_FAIL); /* XXX: need some sort of 1425 * call-back scheme here? */ 1426 } 1427 1428 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1429 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1430 ? BUS_DMASYNC_PREREAD 1431 : BUS_DMASYNC_PREWRITE); 1432 1433 /* init iorq and load iopb from it */ 1434 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1435 bp->b_bcount / XYFM_BPS, 1436 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1437 bp); 1438 1439 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1440 1441 /* Instrumentation. */ 1442 disk_busy(&xysc->sc_dk); 1443 1444 return (XY_ERR_AOK); 1445 } 1446 1447 1448 /* 1449 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1450 * if ok. if it fail returns an error code. type is XY_SUB_*. 1451 * 1452 * note: caller frees iorq in all cases except NORM 1453 * 1454 * return value: 1455 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1456 * WAIT: XY_AOK (success), <error-code> (failed) 1457 * POLL: <same as WAIT> 1458 * NOQ : <same as NORM> 1459 * 1460 * there are three sources for i/o requests: 1461 * [1] xystrategy: normal block I/O, using "struct buf" system. 1462 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1463 * [3] open/ioctl: these are I/O requests done in the context of a process, 1464 * and the process should block until they are done. 1465 * 1466 * software state is stored in the iorq structure. each iorq has an 1467 * iopb structure. the hardware understands the iopb structure. 1468 * every command must go through an iopb. a 450 handles one iopb at a 1469 * time, where as a 451 can take them in chains. [the 450 claims it 1470 * can handle chains, but is appears to be buggy...] iopb are allocated 1471 * in DVMA space at boot up time. each disk gets one iopb, and the 1472 * controller gets one (for POLL and WAIT commands). what happens if 1473 * the iopb is busy? for i/o type [1], the buffers are queued at the 1474 * "buff" layer and * picked up later by the interrupt routine. for case 1475 * [2] we can only be blocked if there is a WAIT type I/O request being 1476 * run. since this can only happen when we are crashing, we wait a sec 1477 * and then steal the IOPB. for case [3] the process can sleep 1478 * on the iorq free list until some iopbs are avaliable. 1479 */ 1480 1481 1482 int 1483 xyc_submit_iorq(xycsc, iorq, type) 1484 struct xyc_softc *xycsc; 1485 struct xy_iorq *iorq; 1486 int type; 1487 1488 { 1489 struct xy_iopb *dmaiopb; 1490 1491 #ifdef XYC_DEBUG 1492 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1493 xycsc->sc_dev.dv_xname, iorq, type); 1494 #endif 1495 1496 /* first check and see if controller is busy */ 1497 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1498 #ifdef XYC_DEBUG 1499 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1500 #endif 1501 if (type == XY_SUB_NOQ) 1502 return (XY_ERR_FAIL); /* failed */ 1503 switch (type) { 1504 case XY_SUB_NORM: 1505 return XY_ERR_AOK; /* success */ 1506 case XY_SUB_WAIT: 1507 while (iorq->iopb->done == 0) { 1508 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1509 } 1510 return (iorq->errno); 1511 case XY_SUB_POLL: /* steal controller */ 1512 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1513 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1514 panic("xyc_submit_iorq: stuck xyc"); 1515 printf("%s: stole controller\n", 1516 xycsc->sc_dev.dv_xname); 1517 break; 1518 default: 1519 panic("xyc_submit_iorq adding"); 1520 } 1521 } 1522 1523 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1524 if (dmaiopb == NULL) { /* nothing doing? */ 1525 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1526 return(XY_ERR_AOK); 1527 panic("xyc_submit_iorq: xyc_chain failed!\n"); 1528 } 1529 1530 XYC_GO(xycsc->xyc, (u_long)dmaiopb); 1531 1532 /* command now running, wrap it up */ 1533 switch (type) { 1534 case XY_SUB_NORM: 1535 case XY_SUB_NOQ: 1536 return (XY_ERR_AOK); /* success */ 1537 case XY_SUB_WAIT: 1538 while (iorq->iopb->done == 0) { 1539 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1540 } 1541 return (iorq->errno); 1542 case XY_SUB_POLL: 1543 return (xyc_piodriver(xycsc, iorq)); 1544 default: 1545 panic("xyc_submit_iorq wrap up"); 1546 } 1547 panic("xyc_submit_iorq"); 1548 return 0; /* not reached */ 1549 } 1550 1551 1552 /* 1553 * xyc_chain: build a chain. return dvma address of first element in 1554 * the chain. iorq != NULL: means we only want that item on the chain. 1555 */ 1556 1557 struct xy_iopb * 1558 xyc_chain(xycsc, iorq) 1559 struct xyc_softc *xycsc; 1560 struct xy_iorq *iorq; 1561 1562 { 1563 int togo, chain, hand; 1564 1565 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1566 1567 /* 1568 * promote control IOPB to the top 1569 */ 1570 if (iorq == NULL) { 1571 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1572 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1573 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1574 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1575 } 1576 1577 /* 1578 * special case: if iorq != NULL then we have a POLL or WAIT request. 1579 * we let these take priority and do them first. 1580 */ 1581 if (iorq) { 1582 xycsc->xy_chain[0] = iorq; 1583 iorq->iopb->chen = 0; 1584 return(iorq->dmaiopb); 1585 } 1586 1587 /* 1588 * NORM case: do round robin and maybe chain (if allowed and possible) 1589 */ 1590 chain = 0; 1591 hand = xycsc->xy_hand; 1592 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1593 1594 for (togo = XYC_MAXIOPB; togo > 0; 1595 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1596 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1597 1598 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1599 xycsc->iopbase[hand].done) 1600 continue; /* not ready-for-i/o */ 1601 1602 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1603 iopb = xycsc->xy_chain[chain]->iopb; 1604 iopb->chen = 0; 1605 if (chain != 0) { 1606 /* adding a link to a chain */ 1607 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1608 prev_iopb->chen = 1; 1609 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1610 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1611 } else { 1612 /* head of chain */ 1613 iorq = xycsc->xy_chain[chain]; 1614 } 1615 chain++; 1616 1617 /* quit if chaining dis-allowed */ 1618 if (xycsc->no_ols) 1619 break; 1620 } 1621 1622 return(iorq ? iorq->dmaiopb : NULL); 1623 } 1624 1625 /* 1626 * xyc_piodriver 1627 * 1628 * programmed i/o driver. this function takes over the computer 1629 * and drains off the polled i/o request. it returns the status of the iorq 1630 * the caller is interesting in. 1631 */ 1632 int 1633 xyc_piodriver(xycsc, iorq) 1634 struct xyc_softc *xycsc; 1635 struct xy_iorq *iorq; 1636 1637 { 1638 int nreset = 0; 1639 int retval = 0; 1640 u_long res; 1641 #ifdef XYC_DEBUG 1642 printf("xyc_piodriver(%s, 0x%x)\n", xycsc->sc_dev.dv_xname, iorq); 1643 #endif 1644 1645 while (iorq->iopb->done == 0) { 1646 1647 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1648 1649 /* we expect some progress soon */ 1650 if (res == XY_ERR_FAIL && nreset >= 2) { 1651 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1652 #ifdef XYC_DEBUG 1653 printf("xyc_piodriver: timeout\n"); 1654 #endif 1655 return (XY_ERR_FAIL); 1656 } 1657 if (res == XY_ERR_FAIL) { 1658 if (xyc_reset(xycsc, 0, 1659 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1660 XY_ERR_FAIL, 1661 0) == XY_ERR_FAIL) 1662 return (XY_ERR_FAIL); /* flushes all but POLL 1663 * requests, resets */ 1664 continue; 1665 } 1666 1667 xyc_remove_iorq(xycsc); /* may resubmit request */ 1668 1669 if (iorq->iopb->done == 0) 1670 xyc_start(xycsc, iorq); 1671 } 1672 1673 /* get return value */ 1674 1675 retval = iorq->errno; 1676 1677 #ifdef XYC_DEBUG 1678 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1679 iorq->errno, xyc_e2str(iorq->errno)); 1680 #endif 1681 1682 /* start up any bufs that have queued */ 1683 1684 xyc_start(xycsc, NULL); 1685 1686 return (retval); 1687 } 1688 1689 /* 1690 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1691 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1692 */ 1693 void 1694 xyc_xyreset(xycsc, xysc) 1695 struct xyc_softc *xycsc; 1696 struct xy_softc *xysc; 1697 1698 { 1699 struct xy_iopb tmpiopb; 1700 struct xy_iopb *iopb; 1701 int del; 1702 1703 iopb = xycsc->ciopb; 1704 1705 /* Save contents */ 1706 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1707 1708 iopb->chen = iopb->done = iopb->errs = 0; 1709 iopb->ien = 0; 1710 iopb->com = XYCMD_RST; 1711 iopb->unit = xysc->xy_drive; 1712 1713 XYC_GO(xycsc->xyc, (u_long)xycsc->ciorq->dmaiopb); 1714 1715 del = XYC_RESETUSEC; 1716 while (del > 0) { 1717 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1718 break; 1719 DELAY(1); 1720 del--; 1721 } 1722 1723 if (del <= 0 || iopb->errs) { 1724 printf("%s: off-line: %s\n", xycsc->sc_dev.dv_xname, 1725 xyc_e2str(iopb->errno)); 1726 del = xycsc->xyc->xyc_rsetup; 1727 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1728 panic("xyc_reset"); 1729 } else { 1730 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1731 } 1732 1733 /* Restore contents */ 1734 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1735 } 1736 1737 1738 /* 1739 * xyc_reset: reset everything: requests are marked as errors except 1740 * a polled request (which is resubmitted) 1741 */ 1742 int 1743 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1744 struct xyc_softc *xycsc; 1745 int quiet, error; 1746 struct xy_iorq *blastmode; 1747 struct xy_softc *xysc; 1748 1749 { 1750 int del = 0, lcv, retval = XY_ERR_AOK; 1751 1752 /* soft reset hardware */ 1753 1754 if (!quiet) 1755 printf("%s: soft reset\n", xycsc->sc_dev.dv_xname); 1756 del = xycsc->xyc->xyc_rsetup; 1757 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1758 if (del == XY_ERR_FAIL) { 1759 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1760 retval = XY_ERR_FAIL; 1761 } 1762 if (xysc) 1763 xyc_xyreset(xycsc, xysc); 1764 1765 /* fix queues based on "blast-mode" */ 1766 1767 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1768 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1769 1770 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1771 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1772 XY_STATE(iorq->mode) != XY_SUB_NORM) 1773 /* is it active? */ 1774 continue; 1775 1776 if (blastmode == XY_RSET_ALL || 1777 blastmode != iorq) { 1778 /* failed */ 1779 iorq->errno = error; 1780 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1781 switch (XY_STATE(iorq->mode)) { 1782 case XY_SUB_NORM: 1783 iorq->buf->b_error = EIO; 1784 iorq->buf->b_flags |= B_ERROR; 1785 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1786 1787 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1788 iorq->dmamap->dm_mapsize, 1789 (iorq->buf->b_flags & B_READ) 1790 ? BUS_DMASYNC_POSTREAD 1791 : BUS_DMASYNC_POSTWRITE); 1792 1793 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1794 1795 BUFQ_REMOVE(&iorq->xy->xyq, iorq->buf); 1796 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1797 (xycsc->reqs[lcv].buf->b_bcount - 1798 xycsc->reqs[lcv].buf->b_resid)); 1799 biodone(iorq->buf); 1800 iorq->mode = XY_SUB_FREE; 1801 break; 1802 case XY_SUB_WAIT: 1803 wakeup(iorq); 1804 case XY_SUB_POLL: 1805 iorq->mode = 1806 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1807 break; 1808 } 1809 1810 } else { 1811 1812 /* resubmit, no need to do anything here */ 1813 } 1814 } 1815 1816 /* 1817 * now, if stuff is waiting, start it. 1818 * since we just reset it should go 1819 */ 1820 xyc_start(xycsc, NULL); 1821 1822 return (retval); 1823 } 1824 1825 /* 1826 * xyc_start: start waiting buffers 1827 */ 1828 1829 void 1830 xyc_start(xycsc, iorq) 1831 struct xyc_softc *xycsc; 1832 struct xy_iorq *iorq; 1833 1834 { 1835 int lcv; 1836 struct xy_softc *xy; 1837 1838 if (iorq == NULL) { 1839 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1840 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1841 if (BUFQ_FIRST(&xy->xyq) == NULL) continue; 1842 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1843 xyc_startbuf(xycsc, xy, BUFQ_FIRST(&xy->xyq)); 1844 } 1845 } 1846 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1847 } 1848 1849 /* 1850 * xyc_remove_iorq: remove "done" IOPB's. 1851 */ 1852 1853 int 1854 xyc_remove_iorq(xycsc) 1855 struct xyc_softc *xycsc; 1856 1857 { 1858 int errno, rq, comm, errs; 1859 struct xyc *xyc = xycsc->xyc; 1860 u_long addr; 1861 struct xy_iopb *iopb; 1862 struct xy_iorq *iorq; 1863 struct buf *bp; 1864 1865 if (xyc->xyc_csr & XYC_DERR) { 1866 /* 1867 * DOUBLE ERROR: should never happen under normal use. This 1868 * error is so bad, you can't even tell which IOPB is bad, so 1869 * we dump them all. 1870 */ 1871 errno = XY_ERR_DERR; 1872 printf("%s: DOUBLE ERROR!\n", xycsc->sc_dev.dv_xname); 1873 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errno, 0) != XY_ERR_AOK) { 1874 printf("%s: soft reset failed!\n", 1875 xycsc->sc_dev.dv_xname); 1876 panic("xyc_remove_iorq: controller DEAD"); 1877 } 1878 return (XY_ERR_AOK); 1879 } 1880 1881 /* 1882 * get iopb that is done, loop down the chain 1883 */ 1884 1885 if (xyc->xyc_csr & XYC_ERR) { 1886 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1887 } 1888 if (xyc->xyc_csr & XYC_IPND) { 1889 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1890 } 1891 1892 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1893 iorq = xycsc->xy_chain[rq]; 1894 if (iorq == NULL) break; /* done ! */ 1895 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1896 continue; /* free, or done */ 1897 iopb = iorq->iopb; 1898 if (iopb->done == 0) 1899 continue; /* not done yet */ 1900 1901 comm = iopb->com; 1902 errs = iopb->errs; 1903 1904 if (errs) 1905 iorq->errno = iopb->errno; 1906 else 1907 iorq->errno = 0; 1908 1909 /* handle non-fatal errors */ 1910 1911 if (errs && 1912 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1913 continue; /* AOK: we resubmitted it */ 1914 1915 1916 /* this iorq is now done (hasn't been restarted or anything) */ 1917 1918 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1919 xyc_perror(iorq, iopb, 0); 1920 1921 /* now, if read/write check to make sure we got all the data 1922 * we needed. (this may not be the case if we got an error in 1923 * the middle of a multisector request). */ 1924 1925 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1926 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1927 /* we just successfully processed a bad144 sector 1928 * note: if we are in bad 144 mode, the pointers have 1929 * been advanced already (see above) and are pointing 1930 * at the bad144 sector. to exit bad144 mode, we 1931 * must advance the pointers 1 sector and issue a new 1932 * request if there are still sectors left to process 1933 * 1934 */ 1935 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1936 1937 /* exit b144 mode */ 1938 iorq->mode = iorq->mode & (~XY_MODE_B144); 1939 1940 if (iorq->sectcnt) { /* more to go! */ 1941 iorq->lasterror = iorq->errno = iopb->errno = 0; 1942 iopb->errs = iopb->done = 0; 1943 iorq->tries = 0; 1944 iopb->scnt = iorq->sectcnt; 1945 iopb->cyl = iorq->blockno / 1946 iorq->xy->sectpercyl; 1947 iopb->head = 1948 (iorq->blockno / iorq->xy->nhead) % 1949 iorq->xy->nhead; 1950 iopb->sect = iorq->blockno % XYFM_BPS; 1951 addr = (u_long) iorq->dbuf; 1952 iopb->dataa = (addr & 0xffff); 1953 iopb->datar = ((addr & 0xff0000) >> 16); 1954 /* will resubit at end */ 1955 continue; 1956 } 1957 } 1958 /* final cleanup, totally done with this request */ 1959 1960 switch (XY_STATE(iorq->mode)) { 1961 case XY_SUB_NORM: 1962 bp = iorq->buf; 1963 if (errs) { 1964 bp->b_error = EIO; 1965 bp->b_flags |= B_ERROR; 1966 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1967 } else { 1968 bp->b_resid = 0; /* done */ 1969 } 1970 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1971 iorq->dmamap->dm_mapsize, 1972 (iorq->buf->b_flags & B_READ) 1973 ? BUS_DMASYNC_POSTREAD 1974 : BUS_DMASYNC_POSTWRITE); 1975 1976 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1977 1978 BUFQ_REMOVE(&iorq->xy->xyq, bp); 1979 disk_unbusy(&iorq->xy->sc_dk, 1980 (bp->b_bcount - bp->b_resid)); 1981 iorq->mode = XY_SUB_FREE; 1982 biodone(bp); 1983 break; 1984 case XY_SUB_WAIT: 1985 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1986 wakeup(iorq); 1987 break; 1988 case XY_SUB_POLL: 1989 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1990 break; 1991 } 1992 } 1993 1994 return (XY_ERR_AOK); 1995 } 1996 1997 /* 1998 * xyc_perror: print error. 1999 * - if still_trying is true: we got an error, retried and got a 2000 * different error. in that case lasterror is the old error, 2001 * and errno is the new one. 2002 * - if still_trying is not true, then if we ever had an error it 2003 * is in lasterror. also, if iorq->errno == 0, then we recovered 2004 * from that error (otherwise iorq->errno == iorq->lasterror). 2005 */ 2006 void 2007 xyc_perror(iorq, iopb, still_trying) 2008 struct xy_iorq *iorq; 2009 struct xy_iopb *iopb; 2010 int still_trying; 2011 2012 { 2013 2014 int error = iorq->lasterror; 2015 2016 printf("%s", (iorq->xy) ? iorq->xy->sc_dev.dv_xname 2017 : iorq->xyc->sc_dev.dv_xname); 2018 if (iorq->buf) 2019 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2020 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2021 printf("%s %d/%d/%d: ", 2022 (iopb->com == XYCMD_RD) ? "read" : "write", 2023 iopb->cyl, iopb->head, iopb->sect); 2024 printf("%s", xyc_e2str(error)); 2025 2026 if (still_trying) 2027 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errno)); 2028 else 2029 if (iorq->errno == 0) 2030 printf(" [recovered in %d tries]", iorq->tries); 2031 2032 printf("\n"); 2033 } 2034 2035 /* 2036 * xyc_error: non-fatal error encountered... recover. 2037 * return AOK if resubmitted, return FAIL if this iopb is done 2038 */ 2039 int 2040 xyc_error(xycsc, iorq, iopb, comm) 2041 struct xyc_softc *xycsc; 2042 struct xy_iorq *iorq; 2043 struct xy_iopb *iopb; 2044 int comm; 2045 2046 { 2047 int errno = iorq->errno; 2048 int erract = xyc_entoact(errno); 2049 int oldmode, advance; 2050 #ifdef __sparc__ 2051 int i; 2052 #endif 2053 2054 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2055 oldmode = iorq->mode; 2056 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2057 /* make xyc_start ignore us */ 2058 xyc_reset(xycsc, 1, XY_RSET_NONE, errno, iorq->xy); 2059 iorq->mode = oldmode; 2060 } 2061 /* check for read/write to a sector in bad144 table if bad: redirect 2062 * request to bad144 area */ 2063 2064 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2065 (iorq->mode & XY_MODE_B144) == 0) { 2066 advance = iorq->sectcnt - iopb->scnt; 2067 XYC_ADVANCE(iorq, advance); 2068 #ifdef __sparc__ 2069 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2070 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2071 iorq->blockno % iorq->xy->nsect)) != -1) { 2072 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2073 * redirect */ 2074 iopb->errno = iopb->done = iopb->errs = 0; 2075 iopb->scnt = 1; 2076 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2077 /* second to last acyl */ 2078 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2079 * standard */ 2080 iopb->head = i / iorq->xy->nhead; 2081 iopb->sect = i % iorq->xy->nhead; 2082 /* will resubmit when we come out of remove_iorq */ 2083 return (XY_ERR_AOK); /* recovered! */ 2084 } 2085 #endif 2086 } 2087 2088 /* 2089 * it isn't a bad144 sector, must be real error! see if we can retry 2090 * it? 2091 */ 2092 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2093 xyc_perror(iorq, iopb, 1); /* inform of error state 2094 * change */ 2095 iorq->lasterror = errno; 2096 2097 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2098 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2099 iorq->tries++; 2100 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2101 /* will resubmit at end of remove_iorq */ 2102 return (XY_ERR_AOK); /* recovered! */ 2103 } 2104 2105 /* failed to recover from this error */ 2106 return (XY_ERR_FAIL); 2107 } 2108 2109 /* 2110 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2111 */ 2112 void 2113 xyc_tick(arg) 2114 void *arg; 2115 2116 { 2117 struct xyc_softc *xycsc = arg; 2118 int lcv, s, reset = 0; 2119 2120 /* reduce ttl for each request if one goes to zero, reset xyc */ 2121 s = splbio(); 2122 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2123 if (xycsc->reqs[lcv].mode == 0 || 2124 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2125 continue; 2126 xycsc->reqs[lcv].ttl--; 2127 if (xycsc->reqs[lcv].ttl == 0) 2128 reset = 1; 2129 } 2130 if (reset) { 2131 printf("%s: watchdog timeout\n", xycsc->sc_dev.dv_xname); 2132 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2133 } 2134 splx(s); 2135 2136 /* until next time */ 2137 2138 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2139 } 2140 2141 /* 2142 * xyc_ioctlcmd: this function provides a user level interface to the 2143 * controller via ioctl. this allows "format" programs to be written 2144 * in user code, and is also useful for some debugging. we return 2145 * an error code. called at user priority. 2146 * 2147 * XXX missing a few commands (see the 7053 driver for ideas) 2148 */ 2149 int 2150 xyc_ioctlcmd(xy, dev, xio) 2151 struct xy_softc *xy; 2152 dev_t dev; 2153 struct xd_iocmd *xio; 2154 2155 { 2156 int s, rqno, dummy = 0; 2157 caddr_t dvmabuf = NULL, buf = NULL; 2158 struct xyc_softc *xycsc; 2159 int rseg, error; 2160 bus_dma_segment_t seg; 2161 2162 /* check sanity of requested command */ 2163 2164 switch (xio->cmd) { 2165 2166 case XYCMD_NOP: /* no op: everything should be zero */ 2167 if (xio->subfn || xio->dptr || xio->dlen || 2168 xio->block || xio->sectcnt) 2169 return (EINVAL); 2170 break; 2171 2172 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2173 case XYCMD_WR: 2174 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2175 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2176 return (EINVAL); 2177 break; 2178 2179 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2180 return (EINVAL); 2181 2182 break; 2183 2184 default: 2185 return (EINVAL);/* ??? */ 2186 } 2187 2188 xycsc = xy->parent; 2189 2190 /* create DVMA buffer for request if needed */ 2191 if (xio->dlen) { 2192 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2193 &seg, &rseg, 2194 xio->dlen, &buf, 2195 (bus_addr_t *)&dvmabuf)) != 0) { 2196 return (error); 2197 } 2198 2199 if (xio->cmd == XYCMD_WR) { 2200 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2201 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2202 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2203 return (error); 2204 } 2205 } 2206 } 2207 /* do it! */ 2208 2209 error = 0; 2210 s = splbio(); 2211 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2212 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2213 if (rqno == XY_ERR_FAIL) { 2214 error = EIO; 2215 goto done; 2216 } 2217 xio->errno = xycsc->ciorq->errno; 2218 xio->tries = xycsc->ciorq->tries; 2219 XYC_DONE(xycsc, dummy); 2220 2221 if (xio->cmd == XYCMD_RD) 2222 error = copyout(buf, xio->dptr, xio->dlen); 2223 2224 done: 2225 splx(s); 2226 if (dvmabuf) { 2227 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2228 xio->dlen, buf); 2229 } 2230 return (error); 2231 } 2232 2233 /* 2234 * xyc_e2str: convert error code number into an error string 2235 */ 2236 char * 2237 xyc_e2str(no) 2238 int no; 2239 { 2240 switch (no) { 2241 case XY_ERR_FAIL: 2242 return ("Software fatal error"); 2243 case XY_ERR_DERR: 2244 return ("DOUBLE ERROR"); 2245 case XY_ERR_AOK: 2246 return ("Successful completion"); 2247 case XY_ERR_IPEN: 2248 return("Interrupt pending"); 2249 case XY_ERR_BCFL: 2250 return("Busy conflict"); 2251 case XY_ERR_TIMO: 2252 return("Operation timeout"); 2253 case XY_ERR_NHDR: 2254 return("Header not found"); 2255 case XY_ERR_HARD: 2256 return("Hard ECC error"); 2257 case XY_ERR_ICYL: 2258 return("Illegal cylinder address"); 2259 case XY_ERR_ISEC: 2260 return("Illegal sector address"); 2261 case XY_ERR_SMAL: 2262 return("Last sector too small"); 2263 case XY_ERR_SACK: 2264 return("Slave ACK error (non-existent memory)"); 2265 case XY_ERR_CHER: 2266 return("Cylinder and head/header error"); 2267 case XY_ERR_SRTR: 2268 return("Auto-seek retry successful"); 2269 case XY_ERR_WPRO: 2270 return("Write-protect error"); 2271 case XY_ERR_UIMP: 2272 return("Unimplemented command"); 2273 case XY_ERR_DNRY: 2274 return("Drive not ready"); 2275 case XY_ERR_SZER: 2276 return("Sector count zero"); 2277 case XY_ERR_DFLT: 2278 return("Drive faulted"); 2279 case XY_ERR_ISSZ: 2280 return("Illegal sector size"); 2281 case XY_ERR_SLTA: 2282 return("Self test A"); 2283 case XY_ERR_SLTB: 2284 return("Self test B"); 2285 case XY_ERR_SLTC: 2286 return("Self test C"); 2287 case XY_ERR_SOFT: 2288 return("Soft ECC error"); 2289 case XY_ERR_SFOK: 2290 return("Soft ECC error recovered"); 2291 case XY_ERR_IHED: 2292 return("Illegal head"); 2293 case XY_ERR_DSEQ: 2294 return("Disk sequencer error"); 2295 case XY_ERR_SEEK: 2296 return("Seek error"); 2297 default: 2298 return ("Unknown error"); 2299 } 2300 } 2301 2302 int 2303 xyc_entoact(errno) 2304 2305 int errno; 2306 2307 { 2308 switch (errno) { 2309 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2310 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2311 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2312 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2313 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2314 2315 return(XY_ERA_PROG); /* program error ! */ 2316 2317 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2318 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2319 case XY_ERR_SOFT: 2320 2321 return(XY_ERA_HARD); /* hard error, retry */ 2322 2323 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2324 2325 return(XY_ERA_RSET); /* hard error reset */ 2326 2327 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2328 2329 return(XY_ERA_SOFT); /* an FYI error */ 2330 2331 case XY_ERR_WPRO: 2332 2333 return(XY_ERA_WPRO); /* write protect */ 2334 } 2335 2336 return(XY_ERA_PROG); /* ??? */ 2337 } 2338
Indexes created Tue Sep 30 11:09:46 GMT 2025