1 /* $NetBSD: xy.c,v 1.85 2009/03/14 21:04:23 dsl 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@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@achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.85 2009/03/14 21:04:23 dsl 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 #include <sys/kauth.h> 80 81 #include <sys/bus.h> 82 #include <sys/intr.h> 83 84 #if defined(__sparc__) || defined(sun3) 85 #include <dev/sun/disklabel.h> 86 #endif 87 88 #include <dev/vme/vmereg.h> 89 #include <dev/vme/vmevar.h> 90 91 #include <dev/vme/xyreg.h> 92 #include <dev/vme/xyvar.h> 93 #include <dev/vme/xio.h> 94 95 #include "locators.h" 96 97 /* 98 * macros 99 */ 100 101 /* 102 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 103 */ 104 #define XYC_GO(XYC, ADDR) { \ 105 u_long addr = (u_long)ADDR; \ 106 (XYC)->xyc_addr_lo = ((addr) & 0xff); \ 107 (addr) = ((addr) >> 8); \ 108 (XYC)->xyc_addr_hi = ((addr) & 0xff); \ 109 (addr) = ((addr) >> 8); \ 110 (XYC)->xyc_reloc_lo = ((addr) & 0xff); \ 111 (addr) = ((addr) >> 8); \ 112 (XYC)->xyc_reloc_hi = (addr); \ 113 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 114 } 115 116 /* 117 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 118 */ 119 120 #define XYC_DONE(SC,ER) { \ 121 if ((ER) == XY_ERR_AOK) { \ 122 (ER) = (SC)->ciorq->errnum; \ 123 (SC)->ciorq->mode = XY_SUB_FREE; \ 124 wakeup((SC)->ciorq); \ 125 } \ 126 } 127 128 /* 129 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 130 */ 131 132 #define XYC_ADVANCE(IORQ, N) { \ 133 if (N) { \ 134 (IORQ)->sectcnt -= (N); \ 135 (IORQ)->blockno += (N); \ 136 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 137 } \ 138 } 139 140 /* 141 * note - addresses you can sleep on: 142 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 143 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 144 */ 145 146 147 /* 148 * function prototypes 149 * "xyc_*" functions are internal, all others are external interfaces 150 */ 151 152 extern int pil_to_vme[]; /* from obio.c */ 153 154 /* internals */ 155 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 156 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 157 const char *xyc_e2str(int); 158 int xyc_entoact(int); 159 int xyc_error(struct xyc_softc *, struct xy_iorq *, 160 struct xy_iopb *, int); 161 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 162 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 163 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 164 int xyc_remove_iorq(struct xyc_softc *); 165 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 166 struct xy_softc *); 167 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, 168 struct xy_softc *, int, u_long, int, 169 void *, struct buf *); 170 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 171 void xyc_start(struct xyc_softc *, struct xy_iorq *); 172 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 173 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 174 void xyc_tick(void *); 175 int xyc_unbusy(struct xyc *, int); 176 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 177 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 178 int *, bus_size_t, void **, bus_addr_t *); 179 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 180 int, bus_size_t, void *); 181 182 /* machine interrupt hook */ 183 int xycintr(void *); 184 185 /* autoconf */ 186 int xycmatch(struct device *, struct cfdata *, void *); 187 void xycattach(struct device *, struct device *, void *); 188 int xymatch(struct device *, struct cfdata *, void *); 189 void xyattach(struct device *, struct device *, void *); 190 static int xyc_probe(void *, bus_space_tag_t, bus_space_handle_t); 191 192 static void xydummystrat(struct buf *); 193 int xygetdisklabel(struct xy_softc *, void *); 194 195 /* 196 * cfattach's: device driver interface to autoconfig 197 */ 198 199 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 200 xycmatch, xycattach, NULL, NULL); 201 202 CFATTACH_DECL(xy, sizeof(struct xy_softc), 203 xymatch, xyattach, NULL, NULL); 204 205 extern struct cfdriver xy_cd; 206 207 dev_type_open(xyopen); 208 dev_type_close(xyclose); 209 dev_type_read(xyread); 210 dev_type_write(xywrite); 211 dev_type_ioctl(xyioctl); 212 dev_type_strategy(xystrategy); 213 dev_type_dump(xydump); 214 dev_type_size(xysize); 215 216 const struct bdevsw xy_bdevsw = { 217 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 218 }; 219 220 const struct cdevsw xy_cdevsw = { 221 xyopen, xyclose, xyread, xywrite, xyioctl, 222 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 223 }; 224 225 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 226 int driveno; /* unit number */ 227 int fullmode; /* submit mode */ 228 int booting; /* are we booting or not? */ 229 }; 230 231 /* 232 * dkdriver 233 */ 234 235 struct dkdriver xydkdriver = { xystrategy }; 236 237 /* 238 * start: disk label fix code (XXX) 239 */ 240 241 static void *xy_labeldata; 242 243 static void 244 xydummystrat(struct buf *bp) 245 { 246 if (bp->b_bcount != XYFM_BPS) 247 panic("xydummystrat"); 248 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 249 bp->b_oflags |= BO_DONE; 250 bp->b_cflags &= ~BC_BUSY; 251 } 252 253 int 254 xygetdisklabel(struct xy_softc *xy, void *b) 255 { 256 const char *err; 257 #if defined(__sparc__) || defined(sun3) 258 struct sun_disklabel *sdl; 259 #endif 260 261 /* We already have the label data in `b'; setup for dummy strategy */ 262 xy_labeldata = b; 263 264 /* Required parameter for readdisklabel() */ 265 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 266 267 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xy->sc_dev), RAW_PART), 268 xydummystrat, 269 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 270 if (err) { 271 printf("%s: %s\n", device_xname(&xy->sc_dev), err); 272 return(XY_ERR_FAIL); 273 } 274 275 #if defined(__sparc__) || defined(sun3) 276 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 277 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 278 if (sdl->sl_magic == SUN_DKMAGIC) { 279 xy->pcyl = sdl->sl_pcylinders; 280 } else 281 #endif 282 { 283 printf("%s: WARNING: no `pcyl' in disk label.\n", 284 device_xname(&xy->sc_dev)); 285 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 286 xy->sc_dk.dk_label->d_acylinders; 287 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 288 device_xname(&xy->sc_dev), xy->pcyl); 289 } 290 291 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 292 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 293 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 294 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 295 xy->sectpercyl = xy->nhead * xy->nsect; 296 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 297 * sun->bsd */ 298 return(XY_ERR_AOK); 299 } 300 301 /* 302 * end: disk label fix code (XXX) 303 */ 304 305 /* 306 * Shorthand for allocating, mapping and loading a DMA buffer 307 */ 308 int 309 xy_dmamem_alloc(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int *nsegp, bus_size_t len, void * *kvap, bus_addr_t *dmap) 310 { 311 int nseg; 312 int error; 313 314 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 315 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 316 return (error); 317 } 318 319 if ((error = bus_dmamem_map(tag, seg, nseg, 320 len, kvap, 321 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 322 bus_dmamem_free(tag, seg, nseg); 323 return (error); 324 } 325 326 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 327 BUS_DMA_NOWAIT)) != 0) { 328 bus_dmamem_unmap(tag, *kvap, len); 329 bus_dmamem_free(tag, seg, nseg); 330 return (error); 331 } 332 333 *dmap = map->dm_segs[0].ds_addr; 334 *nsegp = nseg; 335 return (0); 336 } 337 338 void 339 xy_dmamem_free(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int nseg, bus_size_t len, void * kva) 340 { 341 342 bus_dmamap_unload(tag, map); 343 bus_dmamem_unmap(tag, kva, len); 344 bus_dmamem_free(tag, seg, nseg); 345 } 346 347 348 /* 349 * a u t o c o n f i g f u n c t i o n s 350 */ 351 352 /* 353 * xycmatch: determine if xyc is present or not. we do a 354 * soft reset to detect the xyc. 355 */ 356 int 357 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 358 { 359 struct xyc *xyc = (void *)handle; /* XXX */ 360 361 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 362 } 363 364 int xycmatch(parent, cf, aux) 365 struct device *parent; 366 struct cfdata *cf; 367 void *aux; 368 { 369 struct vme_attach_args *va = aux; 370 vme_chipset_tag_t ct = va->va_vct; 371 vme_am_t mod; 372 int error; 373 374 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 375 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 376 return (0); 377 378 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 379 mod, VME_D16, xyc_probe, 0); 380 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 381 382 return (error == 0); 383 } 384 385 /* 386 * xycattach: attach controller 387 */ 388 void 389 xycattach(parent, self, aux) 390 struct device *parent, *self; 391 void *aux; 392 393 { 394 struct xyc_softc *xyc = device_private(self); 395 struct vme_attach_args *va = aux; 396 vme_chipset_tag_t ct = va->va_vct; 397 bus_space_tag_t bt; 398 bus_space_handle_t bh; 399 vme_intr_handle_t ih; 400 vme_am_t mod; 401 struct xyc_attach_args xa; 402 int lcv, res, error; 403 bus_dma_segment_t seg; 404 int rseg; 405 vme_mapresc_t resc; 406 bus_addr_t busaddr; 407 408 /* get addressing and intr level stuff from autoconfig and load it 409 * into our xyc_softc. */ 410 411 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 412 413 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 414 panic("xyc: vme alloc"); 415 416 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 417 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 418 panic("xyc: vme_map"); 419 420 xyc->xyc = (struct xyc *) bh; /* XXX */ 421 xyc->ipl = va->ilevel; 422 xyc->vector = va->ivector; 423 xyc->no_ols = 0; /* XXX should be from config */ 424 425 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 426 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 427 428 /* 429 * allocate and zero buffers 430 * check boundaries of the KVA's ... all IOPBs must reside in 431 * the same 64K region. 432 */ 433 434 /* Get DMA handle for misc. transfers */ 435 if ((error = vme_dmamap_create( 436 ct, /* VME chip tag */ 437 MAXPHYS, /* size */ 438 VME_AM_A24, /* address modifier */ 439 VME_D16, /* data size */ 440 0, /* swap */ 441 1, /* nsegments */ 442 MAXPHYS, /* maxsegsz */ 443 0, /* boundary */ 444 BUS_DMA_NOWAIT, 445 &xyc->auxmap)) != 0) { 446 447 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 448 error); 449 return; 450 } 451 452 /* Get DMA handle for mapping iorq descriptors */ 453 if ((error = vme_dmamap_create( 454 ct, /* VME chip tag */ 455 XYC_MAXIOPB * sizeof(struct xy_iopb), 456 VME_AM_A24, /* address modifier */ 457 VME_D16, /* data size */ 458 0, /* swap */ 459 1, /* nsegments */ 460 XYC_MAXIOPB * sizeof(struct xy_iopb), 461 64*1024, /* boundary */ 462 BUS_DMA_NOWAIT, 463 &xyc->iopmap)) != 0) { 464 465 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 466 error); 467 return; 468 } 469 470 /* Get DMA buffer for iorq descriptors */ 471 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 472 XYC_MAXIOPB * sizeof(struct xy_iopb), 473 (void **)&xyc->iopbase, 474 &busaddr)) != 0) { 475 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 476 error); 477 return; 478 } 479 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 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), 485 M_DEVBUF, M_NOWAIT|M_ZERO); 486 if (xyc->reqs == NULL) 487 panic("xyc malloc"); 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 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 518 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 aprint_error_dev(&xyc->sc_dev, "error: %s\n", 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 device_xname(&xyc->sc_dev)); 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->ilevel, va->ivector, &ih); 556 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 557 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 558 device_xname(&xyc->sc_dev), "intr"); 559 560 callout_init(&xyc->sc_tick_ch, 0); 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(struct device *parent, struct cfdata *cf, void *aux) 583 { 584 struct xyc_attach_args *xa = aux; 585 586 /* looking for autoconf wildcard or exact match */ 587 588 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 589 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 590 return 0; 591 592 return 1; 593 594 } 595 596 /* 597 * xyattach: attach a disk. this can be called from autoconf and also 598 * from xyopen/xystrategy. 599 */ 600 void 601 xyattach(parent, self, aux) 602 struct device *parent, *self; 603 void *aux; 604 605 { 606 struct xy_softc *xy = device_private(self), *oxy; 607 struct xyc_softc *xyc = device_private(parent); 608 struct xyc_attach_args *xa = aux; 609 int spt, mb, blk, lcv, fmode, s = 0, newstate; 610 struct dkbad *dkb; 611 int rseg, error; 612 bus_dma_segment_t seg; 613 bus_addr_t busaddr; 614 void * dmaddr; 615 char * buf; 616 617 /* 618 * Always re-initialize the disk structure. We want statistics 619 * to start with a clean slate. 620 */ 621 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 622 623 /* if booting, init the xy_softc */ 624 625 if (xa->booting) { 626 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 627 xy->flags = 0; 628 xy->parent = xyc; 629 630 /* init queue of waiting bufs */ 631 632 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 633 634 xy->xyrq = &xyc->reqs[xa->driveno]; 635 636 } 637 xy->xy_drive = xa->driveno; 638 fmode = xa->fullmode; 639 xyc->sc_drives[xa->driveno] = xy; 640 641 /* if not booting, make sure we are the only process in the attach for 642 * this drive. if locked out, sleep on it. */ 643 644 if (!xa->booting) { 645 s = splbio(); 646 while (xy->state == XY_DRIVE_ATTACHING) { 647 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 648 splx(s); 649 return; 650 } 651 } 652 printf("%s at %s", 653 device_xname(&xy->sc_dev), device_xname(&xy->parent->sc_dev)); 654 } 655 656 /* we now have control */ 657 xy->state = XY_DRIVE_ATTACHING; 658 newstate = XY_DRIVE_UNKNOWN; 659 660 buf = NULL; 661 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 662 XYFM_BPS, 663 (void **)&buf, 664 &busaddr)) != 0) { 665 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 666 error); 667 return; 668 } 669 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 670 671 /* first try and reset the drive */ 672 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 673 XYC_DONE(xyc, error); 674 if (error == XY_ERR_DNRY) { 675 printf(" drive %d: off-line\n", xa->driveno); 676 goto done; 677 } 678 if (error) { 679 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 680 goto done; 681 } 682 printf(" drive %d: ready", xa->driveno); 683 684 /* 685 * now set drive parameters (to semi-bogus values) so we can read the 686 * disk label. 687 */ 688 xy->pcyl = xy->ncyl = 1; 689 xy->acyl = 0; 690 xy->nhead = 1; 691 xy->nsect = 1; 692 xy->sectpercyl = 1; 693 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 694 xy->dkb.bt_bad[lcv].bt_cyl = 695 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 696 697 /* read disk label */ 698 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 699 xy->drive_type++) { 700 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 701 dmaddr, fmode); 702 XYC_DONE(xyc, error); 703 if (error == XY_ERR_AOK) break; 704 } 705 706 if (error != XY_ERR_AOK) { 707 aprint_normal("\n"); 708 aprint_error_dev(&xy->sc_dev, "reading disk label failed: %s\n", 709 xyc_e2str(error)); 710 goto done; 711 } 712 printf(" (drive type %d)\n", xy->drive_type); 713 714 newstate = XY_DRIVE_NOLABEL; 715 716 xy->hw_spt = spt = 0; /* XXX needed ? */ 717 /* Attach the disk: must be before getdisklabel to malloc label */ 718 disk_init(&xy->sc_dk, device_xname(&xy->sc_dev), &xydkdriver); 719 disk_attach(&xy->sc_dk); 720 721 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 722 goto done; 723 724 /* inform the user of what is up */ 725 printf("%s: <%s>, pcyl %d\n", device_xname(&xy->sc_dev), 726 buf, xy->pcyl); 727 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 728 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 729 device_xname(&xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 730 XYFM_BPS); 731 732 /* 733 * 450/451 stupidity: the drive type is encoded into the format 734 * of the disk. the drive type in the IOPB must match the drive 735 * type in the format, or you will not be able to do I/O to the 736 * disk (you get header not found errors). if you have two drives 737 * of different sizes that have the same drive type in their 738 * formatting then you are out of luck. 739 * 740 * this problem was corrected in the 753/7053. 741 */ 742 743 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 744 oxy = xyc->sc_drives[lcv]; 745 if (oxy == NULL || oxy == xy) continue; 746 if (oxy->drive_type != xy->drive_type) continue; 747 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 748 xy->nhead != oxy->nhead) { 749 printf("%s: %s and %s must be the same size!\n", 750 device_xname(&xyc->sc_dev), device_xname(&xy->sc_dev), 751 device_xname(&oxy->sc_dev)); 752 panic("xy drive size mismatch"); 753 } 754 } 755 756 757 /* now set the real drive parameters! */ 758 759 blk = (xy->nsect - 1) + 760 ((xy->nhead - 1) * xy->nsect) + 761 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 762 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 763 XYC_DONE(xyc, error); 764 if (error) { 765 aprint_error_dev(&xy->sc_dev, "write drive size failed: %s\n", 766 xyc_e2str(error)); 767 goto done; 768 } 769 newstate = XY_DRIVE_ONLINE; 770 771 /* 772 * read bad144 table. this table resides on the first sector of the 773 * last track of the disk (i.e. second cyl of "acyl" area). 774 */ 775 776 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 777 /* last cyl */ 778 (xy->nhead - 1) * xy->nsect; /* last head */ 779 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 780 dmaddr, fmode); 781 XYC_DONE(xyc, error); 782 if (error) { 783 aprint_error_dev(&xy->sc_dev, "reading bad144 failed: %s\n", 784 xyc_e2str(error)); 785 goto done; 786 } 787 788 /* check dkbad for sanity */ 789 dkb = (struct dkbad *) buf; 790 for (lcv = 0; lcv < 126; lcv++) { 791 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 792 dkb->bt_bad[lcv].bt_cyl == 0) && 793 dkb->bt_bad[lcv].bt_trksec == 0xffff) 794 continue; /* blank */ 795 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 796 break; 797 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 798 break; 799 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 800 break; 801 } 802 if (lcv != 126) { 803 aprint_error_dev(&xy->sc_dev, "warning: invalid bad144 sector!\n"); 804 } else { 805 bcopy(buf, &xy->dkb, XYFM_BPS); 806 } 807 808 done: 809 if (buf != NULL) { 810 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 811 &seg, rseg, XYFM_BPS, buf); 812 } 813 814 xy->state = newstate; 815 if (!xa->booting) { 816 wakeup(&xy->state); 817 splx(s); 818 } 819 } 820 821 /* 822 * end of autoconfig functions 823 */ 824 825 /* 826 * { b , c } d e v s w f u n c t i o n s 827 */ 828 829 /* 830 * xyclose: close device 831 */ 832 int 833 xyclose(dev, flag, fmt, l) 834 dev_t dev; 835 int flag, fmt; 836 struct lwp *l; 837 838 { 839 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 840 int part = DISKPART(dev); 841 842 /* clear mask bits */ 843 844 switch (fmt) { 845 case S_IFCHR: 846 xy->sc_dk.dk_copenmask &= ~(1 << part); 847 break; 848 case S_IFBLK: 849 xy->sc_dk.dk_bopenmask &= ~(1 << part); 850 break; 851 } 852 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 853 854 return 0; 855 } 856 857 /* 858 * xydump: crash dump system 859 */ 860 int 861 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 862 { 863 int unit, part; 864 struct xy_softc *xy; 865 866 unit = DISKUNIT(dev); 867 part = DISKPART(dev); 868 869 xy = device_lookup_private(&xy_cd, unit); 870 if (!xy) 871 return ENXIO; 872 873 printf("%s%c: crash dump not supported (yet)\n", device_xname(&xy->sc_dev), 874 'a' + part); 875 876 return ENXIO; 877 878 /* outline: globals: "dumplo" == sector number of partition to start 879 * dump at (convert to physical sector with partition table) 880 * "dumpsize" == size of dump in clicks "physmem" == size of physical 881 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 882 * physmem) 883 * 884 * dump a copy of physical memory to the dump device starting at sector 885 * "dumplo" in the swap partition (make sure > 0). map in pages as 886 * we go. use polled I/O. 887 * 888 * XXX how to handle NON_CONTIG? */ 889 890 } 891 892 static enum kauth_device_req 893 xy_getkauthreq(u_char cmd) 894 { 895 enum kauth_device_req req; 896 897 switch (cmd) { 898 case XYCMD_WR: 899 case XYCMD_WTH: 900 case XYCMD_WFM: 901 case XYCMD_WRH: 902 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 903 break; 904 905 case XYCMD_RD: 906 case XYCMD_RTH: 907 case XYCMD_RDH: 908 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 909 break; 910 911 case XYCMD_RDS: 912 case XYCMD_MBD: 913 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 914 break; 915 916 case XYCMD_RST: 917 case XYCMD_SDS: 918 case XYCMD_MBL: 919 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 920 break; 921 922 case XYCMD_NOP: 923 case XYCMD_SK: 924 case XYCMD_ST: 925 case XYCMD_R: 926 default: 927 req = 0; 928 break; 929 } 930 931 return (req); 932 } 933 934 /* 935 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 936 */ 937 int 938 xyioctl(dev, command, addr, flag, l) 939 dev_t dev; 940 u_long command; 941 void *addr; 942 int flag; 943 struct lwp *l; 944 945 { 946 struct xy_softc *xy; 947 struct xd_iocmd *xio; 948 int error, s, unit; 949 #ifdef __HAVE_OLD_DISKLABEL 950 struct disklabel newlabel; 951 #endif 952 struct disklabel *lp; 953 954 unit = DISKUNIT(dev); 955 956 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 957 return (ENXIO); 958 959 /* switch on ioctl type */ 960 961 switch (command) { 962 case DIOCSBAD: /* set bad144 info */ 963 if ((flag & FWRITE) == 0) 964 return EBADF; 965 s = splbio(); 966 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 967 splx(s); 968 return 0; 969 970 case DIOCGDINFO: /* get disk label */ 971 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 972 return 0; 973 #ifdef __HAVE_OLD_DISKLABEL 974 case ODIOCGDINFO: 975 newlabel = *(xy->sc_dk.dk_label); 976 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 977 return ENOTTY; 978 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 979 return 0; 980 #endif 981 982 case DIOCGPART: /* get partition info */ 983 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 984 ((struct partinfo *) addr)->part = 985 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 986 return 0; 987 988 case DIOCSDINFO: /* set disk label */ 989 #ifdef __HAVE_OLD_DISKLABEL 990 case ODIOCSDINFO: 991 if (command == ODIOCSDINFO) { 992 memset(&newlabel, 0, sizeof newlabel); 993 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 994 lp = &newlabel; 995 } else 996 #endif 997 lp = (struct disklabel *)addr; 998 999 if ((flag & FWRITE) == 0) 1000 return EBADF; 1001 error = setdisklabel(xy->sc_dk.dk_label, 1002 lp, /* xy->sc_dk.dk_openmask : */ 0, 1003 xy->sc_dk.dk_cpulabel); 1004 if (error == 0) { 1005 if (xy->state == XY_DRIVE_NOLABEL) 1006 xy->state = XY_DRIVE_ONLINE; 1007 } 1008 return error; 1009 1010 case DIOCWLABEL: /* change write status of disk label */ 1011 if ((flag & FWRITE) == 0) 1012 return EBADF; 1013 if (*(int *) addr) 1014 xy->flags |= XY_WLABEL; 1015 else 1016 xy->flags &= ~XY_WLABEL; 1017 return 0; 1018 1019 case DIOCWDINFO: /* write disk label */ 1020 #ifdef __HAVE_OLD_DISKLABEL 1021 case ODIOCWDINFO: 1022 if (command == ODIOCWDINFO) { 1023 memset(&newlabel, 0, sizeof newlabel); 1024 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1025 lp = &newlabel; 1026 } else 1027 #endif 1028 lp = (struct disklabel *)addr; 1029 1030 if ((flag & FWRITE) == 0) 1031 return EBADF; 1032 error = setdisklabel(xy->sc_dk.dk_label, 1033 lp, /* xy->sc_dk.dk_openmask : */ 0, 1034 xy->sc_dk.dk_cpulabel); 1035 if (error == 0) { 1036 if (xy->state == XY_DRIVE_NOLABEL) 1037 xy->state = XY_DRIVE_ONLINE; 1038 1039 /* Simulate opening partition 0 so write succeeds. */ 1040 xy->sc_dk.dk_openmask |= (1 << 0); 1041 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1042 xystrategy, xy->sc_dk.dk_label, 1043 xy->sc_dk.dk_cpulabel); 1044 xy->sc_dk.dk_openmask = 1045 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1046 } 1047 return error; 1048 1049 case DIOSXDCMD: { 1050 enum kauth_device_req req; 1051 1052 xio = (struct xd_iocmd *) addr; 1053 req = xy_getkauthreq(xio->cmd); 1054 if ((error = kauth_authorize_device_passthru(l->l_cred, 1055 dev, req, xio)) != 0) 1056 return (error); 1057 return (xyc_ioctlcmd(xy, dev, xio)); 1058 } 1059 1060 default: 1061 return ENOTTY; 1062 } 1063 } 1064 1065 /* 1066 * xyopen: open drive 1067 */ 1068 1069 int 1070 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1071 { 1072 int unit, part; 1073 struct xy_softc *xy; 1074 struct xyc_attach_args xa; 1075 1076 /* first, could it be a valid target? */ 1077 1078 unit = DISKUNIT(dev); 1079 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1080 return (ENXIO); 1081 part = DISKPART(dev); 1082 1083 /* do we need to attach the drive? */ 1084 1085 if (xy->state == XY_DRIVE_UNKNOWN) { 1086 xa.driveno = xy->xy_drive; 1087 xa.fullmode = XY_SUB_WAIT; 1088 xa.booting = 0; 1089 xyattach((struct device *) xy->parent, 1090 (struct device *) xy, &xa); 1091 if (xy->state == XY_DRIVE_UNKNOWN) { 1092 return (EIO); 1093 } 1094 } 1095 /* check for partition */ 1096 1097 if (part != RAW_PART && 1098 (part >= xy->sc_dk.dk_label->d_npartitions || 1099 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1100 return (ENXIO); 1101 } 1102 /* set open masks */ 1103 1104 switch (fmt) { 1105 case S_IFCHR: 1106 xy->sc_dk.dk_copenmask |= (1 << part); 1107 break; 1108 case S_IFBLK: 1109 xy->sc_dk.dk_bopenmask |= (1 << part); 1110 break; 1111 } 1112 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1113 1114 return 0; 1115 } 1116 1117 int 1118 xyread(dev_t dev, struct uio *uio, int flags) 1119 { 1120 1121 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1122 } 1123 1124 int 1125 xywrite(dev_t dev, struct uio *uio, int flags) 1126 { 1127 1128 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1129 } 1130 1131 1132 /* 1133 * xysize: return size of a partition for a dump 1134 */ 1135 1136 int 1137 xysize(dev) 1138 dev_t dev; 1139 1140 { 1141 struct xy_softc *xysc; 1142 int unit, part, size, omask; 1143 1144 /* valid unit? */ 1145 unit = DISKUNIT(dev); 1146 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1147 return (-1); 1148 1149 part = DISKPART(dev); 1150 omask = xysc->sc_dk.dk_openmask & (1 << part); 1151 1152 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1153 return (-1); 1154 1155 /* do it */ 1156 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1157 size = -1; /* only give valid size for swap partitions */ 1158 else 1159 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1160 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1161 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1162 return (-1); 1163 return (size); 1164 } 1165 1166 /* 1167 * xystrategy: buffering system interface to xy. 1168 */ 1169 1170 void 1171 xystrategy(bp) 1172 struct buf *bp; 1173 1174 { 1175 struct xy_softc *xy; 1176 int s, unit; 1177 struct xyc_attach_args xa; 1178 struct disklabel *lp; 1179 daddr_t blkno; 1180 1181 unit = DISKUNIT(bp->b_dev); 1182 1183 /* check for live device */ 1184 1185 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1186 bp->b_blkno < 0 || 1187 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1188 bp->b_error = EINVAL; 1189 goto done; 1190 } 1191 /* do we need to attach the drive? */ 1192 1193 if (xy->state == XY_DRIVE_UNKNOWN) { 1194 xa.driveno = xy->xy_drive; 1195 xa.fullmode = XY_SUB_WAIT; 1196 xa.booting = 0; 1197 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1198 if (xy->state == XY_DRIVE_UNKNOWN) { 1199 bp->b_error = EIO; 1200 goto done; 1201 } 1202 } 1203 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1204 /* no I/O to unlabeled disks, unless raw partition */ 1205 bp->b_error = EIO; 1206 goto done; 1207 } 1208 /* short circuit zero length request */ 1209 1210 if (bp->b_bcount == 0) 1211 goto done; 1212 1213 /* check bounds with label (disksubr.c). Determine the size of the 1214 * transfer, and make sure it is within the boundaries of the 1215 * partition. Adjust transfer if needed, and signal errors or early 1216 * completion. */ 1217 1218 lp = xy->sc_dk.dk_label; 1219 1220 if (bounds_check_with_label(&xy->sc_dk, bp, 1221 (xy->flags & XY_WLABEL) != 0) <= 0) 1222 goto done; 1223 1224 /* 1225 * Now convert the block number to absolute and put it in 1226 * terms of the device's logical block size. 1227 */ 1228 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1229 if (DISKPART(bp->b_dev) != RAW_PART) 1230 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1231 1232 bp->b_rawblkno = blkno; 1233 1234 /* 1235 * now we know we have a valid buf structure that we need to do I/O 1236 * on. 1237 */ 1238 s = splbio(); /* protect the queues */ 1239 1240 bufq_put(xy->xyq, bp); 1241 1242 /* start 'em up */ 1243 1244 xyc_start(xy->parent, NULL); 1245 1246 /* done! */ 1247 1248 splx(s); 1249 return; 1250 1251 done: /* tells upper layers we are done with this 1252 * buf */ 1253 bp->b_resid = bp->b_bcount; 1254 biodone(bp); 1255 } 1256 /* 1257 * end of {b,c}devsw functions 1258 */ 1259 1260 /* 1261 * i n t e r r u p t f u n c t i o n 1262 * 1263 * xycintr: hardware interrupt. 1264 */ 1265 int 1266 xycintr(v) 1267 void *v; 1268 1269 { 1270 struct xyc_softc *xycsc = v; 1271 1272 /* kick the event counter */ 1273 1274 xycsc->sc_intrcnt.ev_count++; 1275 1276 /* remove as many done IOPBs as possible */ 1277 1278 xyc_remove_iorq(xycsc); 1279 1280 /* start any iorq's already waiting */ 1281 1282 xyc_start(xycsc, NULL); 1283 1284 return (1); 1285 } 1286 /* 1287 * end of interrupt function 1288 */ 1289 1290 /* 1291 * i n t e r n a l f u n c t i o n s 1292 */ 1293 1294 /* 1295 * xyc_rqinit: fill out the fields of an I/O request 1296 */ 1297 1298 inline void 1299 xyc_rqinit(struct xy_iorq *rq, struct xyc_softc *xyc, struct xy_softc *xy, int md, u_long blk, int cnt, void *db, struct buf *bp) 1300 { 1301 rq->xyc = xyc; 1302 rq->xy = xy; 1303 rq->ttl = XYC_MAXTTL + 10; 1304 rq->mode = md; 1305 rq->tries = rq->errnum = rq->lasterror = 0; 1306 rq->blockno = blk; 1307 rq->sectcnt = cnt; 1308 rq->dbuf = db; 1309 rq->buf = bp; 1310 } 1311 1312 /* 1313 * xyc_rqtopb: load up an IOPB based on an iorq 1314 */ 1315 1316 void 1317 xyc_rqtopb(iorq, iopb, cmd, subfun) 1318 struct xy_iorq *iorq; 1319 struct xy_iopb *iopb; 1320 int cmd, subfun; 1321 1322 { 1323 u_long block, dp; 1324 1325 /* normal IOPB case, standard stuff */ 1326 1327 /* chain bit handled later */ 1328 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1329 iopb->com = cmd; 1330 iopb->errnum = 0; 1331 iopb->errs = 0; 1332 iopb->done = 0; 1333 if (iorq->xy) { 1334 iopb->unit = iorq->xy->xy_drive; 1335 iopb->dt = iorq->xy->drive_type; 1336 } else { 1337 iopb->unit = 0; 1338 iopb->dt = 0; 1339 } 1340 block = iorq->blockno; 1341 if (iorq->xy == NULL || block == 0) { 1342 iopb->sect = iopb->head = iopb->cyl = 0; 1343 } else { 1344 iopb->sect = block % iorq->xy->nsect; 1345 block = block / iorq->xy->nsect; 1346 iopb->head = block % iorq->xy->nhead; 1347 block = block / iorq->xy->nhead; 1348 iopb->cyl = block; 1349 } 1350 iopb->scnt = iorq->sectcnt; 1351 dp = (u_long) iorq->dbuf; 1352 if (iorq->dbuf == NULL) { 1353 iopb->dataa = 0; 1354 iopb->datar = 0; 1355 } else { 1356 iopb->dataa = (dp & 0xffff); 1357 iopb->datar = ((dp & 0xff0000) >> 16); 1358 } 1359 iopb->subfn = subfun; 1360 } 1361 1362 1363 /* 1364 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1365 */ 1366 1367 int 1368 xyc_unbusy(xyc, del) 1369 1370 struct xyc *xyc; 1371 int del; 1372 1373 { 1374 while (del-- > 0) { 1375 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1376 break; 1377 DELAY(1); 1378 } 1379 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1380 } 1381 1382 /* 1383 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1384 * note that NORM requests are handled separately. 1385 */ 1386 int 1387 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1388 struct xyc_softc *xycsc; 1389 int cmd, subfn, unit, block, scnt; 1390 char *dptr; 1391 int fullmode; 1392 1393 { 1394 int submode = XY_STATE(fullmode); 1395 struct xy_iorq *iorq = xycsc->ciorq; 1396 struct xy_iopb *iopb = xycsc->ciopb; 1397 1398 /* 1399 * is someone else using the control iopq wait for it if we can 1400 */ 1401 start: 1402 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1403 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1404 return(XY_ERR_FAIL); 1405 goto start; 1406 } 1407 1408 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1409 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1410 iorq->mode = XY_SUB_FREE; 1411 printf("%s: stole control iopb\n", device_xname(&xycsc->sc_dev)); 1412 } 1413 1414 /* init iorq/iopb */ 1415 1416 xyc_rqinit(iorq, xycsc, 1417 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1418 fullmode, block, scnt, dptr, NULL); 1419 1420 /* load IOPB from iorq */ 1421 1422 xyc_rqtopb(iorq, iopb, cmd, subfn); 1423 1424 /* submit it for processing */ 1425 1426 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1427 1428 return(XY_ERR_AOK); 1429 } 1430 1431 /* 1432 * xyc_startbuf 1433 * start a buffer for running 1434 */ 1435 1436 int 1437 xyc_startbuf(xycsc, xysc, bp) 1438 struct xyc_softc *xycsc; 1439 struct xy_softc *xysc; 1440 struct buf *bp; 1441 1442 { 1443 int partno, error; 1444 struct xy_iorq *iorq; 1445 struct xy_iopb *iopb; 1446 u_long block; 1447 1448 iorq = xysc->xyrq; 1449 iopb = iorq->iopb; 1450 1451 /* get buf */ 1452 1453 if (bp == NULL) 1454 panic("xyc_startbuf null buf"); 1455 1456 partno = DISKPART(bp->b_dev); 1457 #ifdef XYC_DEBUG 1458 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(&xysc->sc_dev), 1459 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1460 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1461 bp->b_bcount, bp->b_data); 1462 #endif 1463 1464 /* 1465 * load request. 1466 * 1467 * note that iorq points to the buffer as mapped into DVMA space, 1468 * where as the bp->b_data points to its non-DVMA mapping. 1469 */ 1470 1471 block = bp->b_rawblkno; 1472 1473 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1474 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1475 if (error != 0) { 1476 aprint_error_dev(&xycsc->sc_dev, "warning: cannot load DMA map\n"); 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 (void *)(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 device_xname(&xycsc->sc_dev), 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->errnum); 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 device_xname(&xycsc->sc_dev)); 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, 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->errnum); 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", device_xname(&xycsc->sc_dev), 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->errnum; 1729 1730 #ifdef XYC_DEBUG 1731 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1732 iorq->errnum, xyc_e2str(iorq->errnum)); 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, 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", device_xname(&xycsc->sc_dev), 1778 xyc_e2str(iopb->errnum)); 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", device_xname(&xycsc->sc_dev)); 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->errnum = 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_resid = iorq->sectcnt * XYFM_BPS; 1838 1839 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1840 iorq->dmamap->dm_mapsize, 1841 (iorq->buf->b_flags & B_READ) 1842 ? BUS_DMASYNC_POSTREAD 1843 : BUS_DMASYNC_POSTWRITE); 1844 1845 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1846 1847 (void)bufq_get(iorq->xy->xyq); 1848 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1849 (xycsc->reqs[lcv].buf->b_bcount - 1850 xycsc->reqs[lcv].buf->b_resid), 1851 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1852 biodone(iorq->buf); 1853 iorq->mode = XY_SUB_FREE; 1854 break; 1855 case XY_SUB_WAIT: 1856 wakeup(iorq); 1857 case XY_SUB_POLL: 1858 iorq->mode = 1859 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1860 break; 1861 } 1862 1863 } else { 1864 1865 /* resubmit, no need to do anything here */ 1866 } 1867 } 1868 1869 /* 1870 * now, if stuff is waiting, start it. 1871 * since we just reset it should go 1872 */ 1873 xyc_start(xycsc, NULL); 1874 1875 return (retval); 1876 } 1877 1878 /* 1879 * xyc_start: start waiting buffers 1880 */ 1881 1882 void 1883 xyc_start(xycsc, iorq) 1884 struct xyc_softc *xycsc; 1885 struct xy_iorq *iorq; 1886 1887 { 1888 int lcv; 1889 struct xy_softc *xy; 1890 1891 if (iorq == NULL) { 1892 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1893 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1894 if (bufq_peek(xy->xyq) == NULL) continue; 1895 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1896 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1897 } 1898 } 1899 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1900 } 1901 1902 /* 1903 * xyc_remove_iorq: remove "done" IOPB's. 1904 */ 1905 1906 int 1907 xyc_remove_iorq(xycsc) 1908 struct xyc_softc *xycsc; 1909 1910 { 1911 int errnum, rq, comm, errs; 1912 struct xyc *xyc = xycsc->xyc; 1913 u_long addr; 1914 struct xy_iopb *iopb; 1915 struct xy_iorq *iorq; 1916 struct buf *bp; 1917 1918 if (xyc->xyc_csr & XYC_DERR) { 1919 /* 1920 * DOUBLE ERROR: should never happen under normal use. This 1921 * error is so bad, you can't even tell which IOPB is bad, so 1922 * we dump them all. 1923 */ 1924 errnum = XY_ERR_DERR; 1925 aprint_error_dev(&xycsc->sc_dev, "DOUBLE ERROR!\n"); 1926 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1927 aprint_error_dev(&xycsc->sc_dev, "soft reset failed!\n"); 1928 panic("xyc_remove_iorq: controller DEAD"); 1929 } 1930 return (XY_ERR_AOK); 1931 } 1932 1933 /* 1934 * get iopb that is done, loop down the chain 1935 */ 1936 1937 if (xyc->xyc_csr & XYC_ERR) { 1938 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1939 } 1940 if (xyc->xyc_csr & XYC_IPND) { 1941 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1942 } 1943 1944 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1945 iorq = xycsc->xy_chain[rq]; 1946 if (iorq == NULL) break; /* done ! */ 1947 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1948 continue; /* free, or done */ 1949 iopb = iorq->iopb; 1950 if (iopb->done == 0) 1951 continue; /* not done yet */ 1952 1953 comm = iopb->com; 1954 errs = iopb->errs; 1955 1956 if (errs) 1957 iorq->errnum = iopb->errnum; 1958 else 1959 iorq->errnum = 0; 1960 1961 /* handle non-fatal errors */ 1962 1963 if (errs && 1964 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1965 continue; /* AOK: we resubmitted it */ 1966 1967 1968 /* this iorq is now done (hasn't been restarted or anything) */ 1969 1970 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1971 xyc_perror(iorq, iopb, 0); 1972 1973 /* now, if read/write check to make sure we got all the data 1974 * we needed. (this may not be the case if we got an error in 1975 * the middle of a multisector request). */ 1976 1977 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1978 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1979 /* we just successfully processed a bad144 sector 1980 * note: if we are in bad 144 mode, the pointers have 1981 * been advanced already (see above) and are pointing 1982 * at the bad144 sector. to exit bad144 mode, we 1983 * must advance the pointers 1 sector and issue a new 1984 * request if there are still sectors left to process 1985 * 1986 */ 1987 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1988 1989 /* exit b144 mode */ 1990 iorq->mode = iorq->mode & (~XY_MODE_B144); 1991 1992 if (iorq->sectcnt) { /* more to go! */ 1993 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1994 iopb->errs = iopb->done = 0; 1995 iorq->tries = 0; 1996 iopb->scnt = iorq->sectcnt; 1997 iopb->cyl = iorq->blockno / 1998 iorq->xy->sectpercyl; 1999 iopb->head = 2000 (iorq->blockno / iorq->xy->nhead) % 2001 iorq->xy->nhead; 2002 iopb->sect = iorq->blockno % XYFM_BPS; 2003 addr = (u_long) iorq->dbuf; 2004 iopb->dataa = (addr & 0xffff); 2005 iopb->datar = ((addr & 0xff0000) >> 16); 2006 /* will resubit at end */ 2007 continue; 2008 } 2009 } 2010 /* final cleanup, totally done with this request */ 2011 2012 switch (XY_STATE(iorq->mode)) { 2013 case XY_SUB_NORM: 2014 bp = iorq->buf; 2015 if (errs) { 2016 bp->b_error = EIO; 2017 bp->b_resid = iorq->sectcnt * XYFM_BPS; 2018 } else { 2019 bp->b_resid = 0; /* done */ 2020 } 2021 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2022 iorq->dmamap->dm_mapsize, 2023 (iorq->buf->b_flags & B_READ) 2024 ? BUS_DMASYNC_POSTREAD 2025 : BUS_DMASYNC_POSTWRITE); 2026 2027 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2028 2029 (void)bufq_get(iorq->xy->xyq); 2030 disk_unbusy(&iorq->xy->sc_dk, 2031 (bp->b_bcount - bp->b_resid), 2032 (bp->b_flags & B_READ)); 2033 iorq->mode = XY_SUB_FREE; 2034 biodone(bp); 2035 break; 2036 case XY_SUB_WAIT: 2037 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2038 wakeup(iorq); 2039 break; 2040 case XY_SUB_POLL: 2041 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2042 break; 2043 } 2044 } 2045 2046 return (XY_ERR_AOK); 2047 } 2048 2049 /* 2050 * xyc_perror: print error. 2051 * - if still_trying is true: we got an error, retried and got a 2052 * different error. in that case lasterror is the old error, 2053 * and errnum is the new one. 2054 * - if still_trying is not true, then if we ever had an error it 2055 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2056 * from that error (otherwise iorq->errnum == iorq->lasterror). 2057 */ 2058 void 2059 xyc_perror(iorq, iopb, still_trying) 2060 struct xy_iorq *iorq; 2061 struct xy_iopb *iopb; 2062 int still_trying; 2063 2064 { 2065 2066 int error = iorq->lasterror; 2067 2068 printf("%s", (iorq->xy) ? device_xname(&iorq->xy->sc_dev) 2069 : device_xname(&iorq->xyc->sc_dev)); 2070 if (iorq->buf) 2071 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2072 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2073 printf("%s %d/%d/%d: ", 2074 (iopb->com == XYCMD_RD) ? "read" : "write", 2075 iopb->cyl, iopb->head, iopb->sect); 2076 printf("%s", xyc_e2str(error)); 2077 2078 if (still_trying) 2079 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2080 else 2081 if (iorq->errnum == 0) 2082 printf(" [recovered in %d tries]", iorq->tries); 2083 2084 printf("\n"); 2085 } 2086 2087 /* 2088 * xyc_error: non-fatal error encountered... recover. 2089 * return AOK if resubmitted, return FAIL if this iopb is done 2090 */ 2091 int 2092 xyc_error(xycsc, iorq, iopb, comm) 2093 struct xyc_softc *xycsc; 2094 struct xy_iorq *iorq; 2095 struct xy_iopb *iopb; 2096 int comm; 2097 2098 { 2099 int errnum = iorq->errnum; 2100 int erract = xyc_entoact(errnum); 2101 int oldmode, advance; 2102 #ifdef __sparc__ 2103 int i; 2104 #endif 2105 2106 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2107 oldmode = iorq->mode; 2108 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2109 /* make xyc_start ignore us */ 2110 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2111 iorq->mode = oldmode; 2112 } 2113 /* check for read/write to a sector in bad144 table if bad: redirect 2114 * request to bad144 area */ 2115 2116 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2117 (iorq->mode & XY_MODE_B144) == 0) { 2118 advance = iorq->sectcnt - iopb->scnt; 2119 XYC_ADVANCE(iorq, advance); 2120 #ifdef __sparc__ 2121 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2122 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2123 iorq->blockno % iorq->xy->nsect)) != -1) { 2124 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2125 * redirect */ 2126 iopb->errnum = iopb->done = iopb->errs = 0; 2127 iopb->scnt = 1; 2128 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2129 /* second to last acyl */ 2130 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2131 * standard */ 2132 iopb->head = i / iorq->xy->nhead; 2133 iopb->sect = i % iorq->xy->nhead; 2134 /* will resubmit when we come out of remove_iorq */ 2135 return (XY_ERR_AOK); /* recovered! */ 2136 } 2137 #endif 2138 } 2139 2140 /* 2141 * it isn't a bad144 sector, must be real error! see if we can retry 2142 * it? 2143 */ 2144 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2145 xyc_perror(iorq, iopb, 1); /* inform of error state 2146 * change */ 2147 iorq->lasterror = errnum; 2148 2149 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2150 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2151 iorq->tries++; 2152 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2153 /* will resubmit at end of remove_iorq */ 2154 return (XY_ERR_AOK); /* recovered! */ 2155 } 2156 2157 /* failed to recover from this error */ 2158 return (XY_ERR_FAIL); 2159 } 2160 2161 /* 2162 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2163 */ 2164 void 2165 xyc_tick(arg) 2166 void *arg; 2167 2168 { 2169 struct xyc_softc *xycsc = arg; 2170 int lcv, s, reset = 0; 2171 2172 /* reduce ttl for each request if one goes to zero, reset xyc */ 2173 s = splbio(); 2174 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2175 if (xycsc->reqs[lcv].mode == 0 || 2176 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2177 continue; 2178 xycsc->reqs[lcv].ttl--; 2179 if (xycsc->reqs[lcv].ttl == 0) 2180 reset = 1; 2181 } 2182 if (reset) { 2183 printf("%s: watchdog timeout\n", device_xname(&xycsc->sc_dev)); 2184 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2185 } 2186 splx(s); 2187 2188 /* until next time */ 2189 2190 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2191 } 2192 2193 /* 2194 * xyc_ioctlcmd: this function provides a user level interface to the 2195 * controller via ioctl. this allows "format" programs to be written 2196 * in user code, and is also useful for some debugging. we return 2197 * an error code. called at user priority. 2198 * 2199 * XXX missing a few commands (see the 7053 driver for ideas) 2200 */ 2201 int 2202 xyc_ioctlcmd(xy, dev, xio) 2203 struct xy_softc *xy; 2204 dev_t dev; 2205 struct xd_iocmd *xio; 2206 2207 { 2208 int s, rqno, dummy = 0; 2209 char *dvmabuf = NULL, *buf = NULL; 2210 struct xyc_softc *xycsc; 2211 int rseg, error; 2212 bus_dma_segment_t seg; 2213 2214 /* check sanity of requested command */ 2215 2216 switch (xio->cmd) { 2217 2218 case XYCMD_NOP: /* no op: everything should be zero */ 2219 if (xio->subfn || xio->dptr || xio->dlen || 2220 xio->block || xio->sectcnt) 2221 return (EINVAL); 2222 break; 2223 2224 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2225 case XYCMD_WR: 2226 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2227 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2228 return (EINVAL); 2229 break; 2230 2231 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2232 return (EINVAL); 2233 2234 break; 2235 2236 default: 2237 return (EINVAL);/* ??? */ 2238 } 2239 2240 xycsc = xy->parent; 2241 2242 /* create DVMA buffer for request if needed */ 2243 if (xio->dlen) { 2244 bus_addr_t busbuf; 2245 2246 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2247 &seg, &rseg, 2248 xio->dlen, (void **)&buf, 2249 &busbuf)) != 0) { 2250 return (error); 2251 } 2252 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2253 2254 if (xio->cmd == XYCMD_WR) { 2255 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2256 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2257 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2258 return (error); 2259 } 2260 } 2261 } 2262 /* do it! */ 2263 2264 error = 0; 2265 s = splbio(); 2266 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2267 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2268 if (rqno == XY_ERR_FAIL) { 2269 error = EIO; 2270 goto done; 2271 } 2272 xio->errnum = xycsc->ciorq->errnum; 2273 xio->tries = xycsc->ciorq->tries; 2274 XYC_DONE(xycsc, dummy); 2275 2276 if (xio->cmd == XYCMD_RD) 2277 error = copyout(buf, xio->dptr, xio->dlen); 2278 2279 done: 2280 splx(s); 2281 if (dvmabuf) { 2282 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2283 xio->dlen, buf); 2284 } 2285 return (error); 2286 } 2287 2288 /* 2289 * xyc_e2str: convert error code number into an error string 2290 */ 2291 const char * 2292 xyc_e2str(int no) 2293 { 2294 switch (no) { 2295 case XY_ERR_FAIL: 2296 return ("Software fatal error"); 2297 case XY_ERR_DERR: 2298 return ("DOUBLE ERROR"); 2299 case XY_ERR_AOK: 2300 return ("Successful completion"); 2301 case XY_ERR_IPEN: 2302 return("Interrupt pending"); 2303 case XY_ERR_BCFL: 2304 return("Busy conflict"); 2305 case XY_ERR_TIMO: 2306 return("Operation timeout"); 2307 case XY_ERR_NHDR: 2308 return("Header not found"); 2309 case XY_ERR_HARD: 2310 return("Hard ECC error"); 2311 case XY_ERR_ICYL: 2312 return("Illegal cylinder address"); 2313 case XY_ERR_ISEC: 2314 return("Illegal sector address"); 2315 case XY_ERR_SMAL: 2316 return("Last sector too small"); 2317 case XY_ERR_SACK: 2318 return("Slave ACK error (non-existent memory)"); 2319 case XY_ERR_CHER: 2320 return("Cylinder and head/header error"); 2321 case XY_ERR_SRTR: 2322 return("Auto-seek retry successful"); 2323 case XY_ERR_WPRO: 2324 return("Write-protect error"); 2325 case XY_ERR_UIMP: 2326 return("Unimplemented command"); 2327 case XY_ERR_DNRY: 2328 return("Drive not ready"); 2329 case XY_ERR_SZER: 2330 return("Sector count zero"); 2331 case XY_ERR_DFLT: 2332 return("Drive faulted"); 2333 case XY_ERR_ISSZ: 2334 return("Illegal sector size"); 2335 case XY_ERR_SLTA: 2336 return("Self test A"); 2337 case XY_ERR_SLTB: 2338 return("Self test B"); 2339 case XY_ERR_SLTC: 2340 return("Self test C"); 2341 case XY_ERR_SOFT: 2342 return("Soft ECC error"); 2343 case XY_ERR_SFOK: 2344 return("Soft ECC error recovered"); 2345 case XY_ERR_IHED: 2346 return("Illegal head"); 2347 case XY_ERR_DSEQ: 2348 return("Disk sequencer error"); 2349 case XY_ERR_SEEK: 2350 return("Seek error"); 2351 default: 2352 return ("Unknown error"); 2353 } 2354 } 2355 2356 int 2357 xyc_entoact(errnum) 2358 2359 int errnum; 2360 2361 { 2362 switch (errnum) { 2363 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2364 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2365 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2366 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2367 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2368 2369 return(XY_ERA_PROG); /* program error ! */ 2370 2371 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2372 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2373 case XY_ERR_SOFT: 2374 2375 return(XY_ERA_HARD); /* hard error, retry */ 2376 2377 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2378 2379 return(XY_ERA_RSET); /* hard error reset */ 2380 2381 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2382 2383 return(XY_ERA_SOFT); /* an FYI error */ 2384 2385 case XY_ERR_WPRO: 2386 2387 return(XY_ERA_WPRO); /* write protect */ 2388 } 2389 2390 return(XY_ERA_PROG); /* ??? */ 2391 } 2392