xy.c revision 1.92
1 /* $NetBSD: xy.c,v 1.92 2012/02/12 16:34:12 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Charles D. Cranor 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * 30 * 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 31 * 32 * author: Chuck Cranor <chuck@netbsd> 33 * started: 14-Sep-95 34 * references: [1] Xylogics Model 753 User's Manual 35 * part number: 166-753-001, Revision B, May 21, 1988. 36 * "Your Partner For Performance" 37 * [2] other NetBSD disk device drivers 38 * [3] Xylogics Model 450 User's Manual 39 * part number: 166-017-001, Revision B, 1983. 40 * [4] Addendum to Xylogics Model 450 Disk Controller User's 41 * Manual, Jan. 1985. 42 * [5] The 451 Controller, Rev. B3, September 2, 1986. 43 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 44 * 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.92 2012/02/12 16:34:12 matt Exp $"); 49 50 #undef XYC_DEBUG /* full debug */ 51 #undef XYC_DIAG /* extra sanity checks */ 52 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 53 #define XYC_DIAG /* link in with master DIAG option */ 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/proc.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/dkbad.h> 72 #include <sys/conf.h> 73 #include <sys/kauth.h> 74 75 #include <sys/bus.h> 76 #include <sys/intr.h> 77 78 #if defined(__sparc__) || defined(sun3) 79 #include <dev/sun/disklabel.h> 80 #endif 81 82 #include <dev/vme/vmereg.h> 83 #include <dev/vme/vmevar.h> 84 85 #include <dev/vme/xyreg.h> 86 #include <dev/vme/xyvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 97 */ 98 #define XYC_GO(XYC, ADDR) { \ 99 u_long addr = (u_long)ADDR; \ 100 (XYC)->xyc_addr_lo = ((addr) & 0xff); \ 101 (addr) = ((addr) >> 8); \ 102 (XYC)->xyc_addr_hi = ((addr) & 0xff); \ 103 (addr) = ((addr) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((addr) & 0xff); \ 105 (addr) = ((addr) >> 8); \ 106 (XYC)->xyc_reloc_hi = (addr); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errnum; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 150 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 151 const char *xyc_e2str(int); 152 int xyc_entoact(int); 153 int xyc_error(struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int); 155 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 156 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 157 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 158 int xyc_remove_iorq(struct xyc_softc *); 159 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *); 161 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 void *, struct buf *); 164 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 165 void xyc_start(struct xyc_softc *, struct xy_iorq *); 166 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 167 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 168 void xyc_tick(void *); 169 int xyc_unbusy(struct xyc *, int); 170 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 171 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 172 int *, bus_size_t, void **, bus_addr_t *); 173 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 174 int, bus_size_t, void *); 175 176 /* machine interrupt hook */ 177 int xycintr(void *); 178 179 /* autoconf */ 180 int xycmatch(device_t, cfdata_t, void *); 181 void xycattach(device_t, device_t, void *); 182 int xymatch(device_t, cfdata_t, void *); 183 void xyattach(device_t, device_t, void *); 184 static int xyc_probe(void *, bus_space_tag_t, bus_space_handle_t); 185 186 static void xydummystrat(struct buf *); 187 int xygetdisklabel(struct xy_softc *, void *); 188 189 /* 190 * cfattach's: device driver interface to autoconfig 191 */ 192 193 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 194 xycmatch, xycattach, NULL, NULL); 195 196 CFATTACH_DECL(xy, sizeof(struct xy_softc), 197 xymatch, xyattach, NULL, NULL); 198 199 extern struct cfdriver xy_cd; 200 201 dev_type_open(xyopen); 202 dev_type_close(xyclose); 203 dev_type_read(xyread); 204 dev_type_write(xywrite); 205 dev_type_ioctl(xyioctl); 206 dev_type_strategy(xystrategy); 207 dev_type_dump(xydump); 208 dev_type_size(xysize); 209 210 const struct bdevsw xy_bdevsw = { 211 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 212 }; 213 214 const struct cdevsw xy_cdevsw = { 215 xyopen, xyclose, xyread, xywrite, xyioctl, 216 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 217 }; 218 219 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 220 int driveno; /* unit number */ 221 int fullmode; /* submit mode */ 222 int booting; /* are we booting or not? */ 223 }; 224 225 /* 226 * dkdriver 227 */ 228 229 struct dkdriver xydkdriver = { xystrategy }; 230 231 /* 232 * start: disk label fix code (XXX) 233 */ 234 235 static void *xy_labeldata; 236 237 static void 238 xydummystrat(struct buf *bp) 239 { 240 if (bp->b_bcount != XYFM_BPS) 241 panic("xydummystrat"); 242 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 243 bp->b_oflags |= BO_DONE; 244 bp->b_cflags &= ~BC_BUSY; 245 } 246 247 int 248 xygetdisklabel(struct xy_softc *xy, void *b) 249 { 250 const char *err; 251 #if defined(__sparc__) || defined(sun3) 252 struct sun_disklabel *sdl; 253 #endif 254 255 /* We already have the label data in `b'; setup for dummy strategy */ 256 xy_labeldata = b; 257 258 /* Required parameter for readdisklabel() */ 259 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 260 261 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xy->sc_dev), RAW_PART), 262 xydummystrat, 263 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 264 if (err) { 265 printf("%s: %s\n", device_xname(&xy->sc_dev), err); 266 return(XY_ERR_FAIL); 267 } 268 269 #if defined(__sparc__) || defined(sun3) 270 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 271 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 272 if (sdl->sl_magic == SUN_DKMAGIC) { 273 xy->pcyl = sdl->sl_pcylinders; 274 } else 275 #endif 276 { 277 printf("%s: WARNING: no `pcyl' in disk label.\n", 278 device_xname(&xy->sc_dev)); 279 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 280 xy->sc_dk.dk_label->d_acylinders; 281 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 282 device_xname(&xy->sc_dev), xy->pcyl); 283 } 284 285 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 286 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 287 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 288 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 289 xy->sectpercyl = xy->nhead * xy->nsect; 290 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 291 * sun->bsd */ 292 return(XY_ERR_AOK); 293 } 294 295 /* 296 * end: disk label fix code (XXX) 297 */ 298 299 /* 300 * Shorthand for allocating, mapping and loading a DMA buffer 301 */ 302 int 303 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) 304 { 305 int nseg; 306 int error; 307 308 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 309 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 310 return (error); 311 } 312 313 if ((error = bus_dmamem_map(tag, seg, nseg, 314 len, kvap, 315 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 316 bus_dmamem_free(tag, seg, nseg); 317 return (error); 318 } 319 320 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 321 BUS_DMA_NOWAIT)) != 0) { 322 bus_dmamem_unmap(tag, *kvap, len); 323 bus_dmamem_free(tag, seg, nseg); 324 return (error); 325 } 326 327 *dmap = map->dm_segs[0].ds_addr; 328 *nsegp = nseg; 329 return (0); 330 } 331 332 void 333 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) 334 { 335 336 bus_dmamap_unload(tag, map); 337 bus_dmamem_unmap(tag, kva, len); 338 bus_dmamem_free(tag, seg, nseg); 339 } 340 341 342 /* 343 * a u t o c o n f i g f u n c t i o n s 344 */ 345 346 /* 347 * xycmatch: determine if xyc is present or not. we do a 348 * soft reset to detect the xyc. 349 */ 350 int 351 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 352 { 353 struct xyc *xyc = (void *)handle; /* XXX */ 354 355 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 356 } 357 358 int 359 xycmatch(device_t parent, cfdata_t cf, void *aux) 360 { 361 struct vme_attach_args *va = aux; 362 vme_chipset_tag_t ct = va->va_vct; 363 vme_am_t mod; 364 int error; 365 366 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 367 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 368 return (0); 369 370 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 371 mod, VME_D16, xyc_probe, 0); 372 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 373 374 return (error == 0); 375 } 376 377 /* 378 * xycattach: attach controller 379 */ 380 void 381 xycattach(device_t parent, device_t self, void *aux) 382 { 383 struct xyc_softc *xyc = device_private(self); 384 struct vme_attach_args *va = aux; 385 vme_chipset_tag_t ct = va->va_vct; 386 bus_space_tag_t bt; 387 bus_space_handle_t bh; 388 vme_intr_handle_t ih; 389 vme_am_t mod; 390 struct xyc_attach_args xa; 391 int lcv, res, error; 392 bus_dma_segment_t seg; 393 int rseg; 394 vme_mapresc_t resc; 395 bus_addr_t busaddr; 396 397 /* get addressing and intr level stuff from autoconfig and load it 398 * into our xyc_softc. */ 399 400 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 401 402 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 403 panic("xyc: vme alloc"); 404 405 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 406 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 407 panic("xyc: vme_map"); 408 409 xyc->xyc = (struct xyc *) bh; /* XXX */ 410 xyc->ipl = va->ilevel; 411 xyc->vector = va->ivector; 412 xyc->no_ols = 0; /* XXX should be from config */ 413 414 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 415 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 416 417 /* 418 * allocate and zero buffers 419 * check boundaries of the KVA's ... all IOPBs must reside in 420 * the same 64K region. 421 */ 422 423 /* Get DMA handle for misc. transfers */ 424 if ((error = vme_dmamap_create( 425 ct, /* VME chip tag */ 426 MAXPHYS, /* size */ 427 VME_AM_A24, /* address modifier */ 428 VME_D16, /* data size */ 429 0, /* swap */ 430 1, /* nsegments */ 431 MAXPHYS, /* maxsegsz */ 432 0, /* boundary */ 433 BUS_DMA_NOWAIT, 434 &xyc->auxmap)) != 0) { 435 436 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 437 error); 438 return; 439 } 440 441 /* Get DMA handle for mapping iorq descriptors */ 442 if ((error = vme_dmamap_create( 443 ct, /* VME chip tag */ 444 XYC_MAXIOPB * sizeof(struct xy_iopb), 445 VME_AM_A24, /* address modifier */ 446 VME_D16, /* data size */ 447 0, /* swap */ 448 1, /* nsegments */ 449 XYC_MAXIOPB * sizeof(struct xy_iopb), 450 64*1024, /* boundary */ 451 BUS_DMA_NOWAIT, 452 &xyc->iopmap)) != 0) { 453 454 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 455 error); 456 return; 457 } 458 459 /* Get DMA buffer for iorq descriptors */ 460 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 461 XYC_MAXIOPB * sizeof(struct xy_iopb), 462 (void **)&xyc->iopbase, 463 &busaddr)) != 0) { 464 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 465 error); 466 return; 467 } 468 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 469 470 memset(xyc->iopbase, 0, XYC_MAXIOPB * sizeof(struct xy_iopb)); 471 472 xyc->reqs = (struct xy_iorq *) 473 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 474 M_DEVBUF, M_NOWAIT|M_ZERO); 475 if (xyc->reqs == NULL) 476 panic("xyc malloc"); 477 478 /* 479 * init iorq to iopb pointers, and non-zero fields in the 480 * iopb which never change. 481 */ 482 483 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 484 xyc->xy_chain[lcv] = NULL; 485 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 486 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 487 xyc->iopbase[lcv].asr = 1; /* always the same */ 488 xyc->iopbase[lcv].eef = 1; /* always the same */ 489 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 490 xyc->iopbase[lcv].aud = 1; /* always the same */ 491 xyc->iopbase[lcv].relo = 1; /* always the same */ 492 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 493 494 if ((error = vme_dmamap_create( 495 ct, /* VME chip tag */ 496 MAXPHYS, /* size */ 497 VME_AM_A24, /* address modifier */ 498 VME_D16, /* data size */ 499 0, /* swap */ 500 1, /* nsegments */ 501 MAXPHYS, /* maxsegsz */ 502 0, /* boundary */ 503 BUS_DMA_NOWAIT, 504 &xyc->reqs[lcv].dmamap)) != 0) { 505 506 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 507 error); 508 return; 509 } 510 } 511 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 512 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 513 xyc->xy_hand = 0; 514 515 /* read controller parameters and insure we have a 450/451 */ 516 517 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 518 res = xyc->ciopb->ctyp; 519 XYC_DONE(xyc, error); 520 if (res != XYCT_450) { 521 if (error) 522 printf(": %s: ", xyc_e2str(error)); 523 printf(": doesn't identify as a 450/451\n"); 524 return; 525 } 526 printf(": Xylogics 450/451"); 527 if (xyc->no_ols) 528 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 529 printf("\n"); 530 if (error) { 531 aprint_error_dev(&xyc->sc_dev, "error: %s\n", 532 xyc_e2str(error)); 533 return; 534 } 535 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 536 printf("%s: 24 bit addressing turned off\n", 537 device_xname(&xyc->sc_dev)); 538 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 539 printf("to enable 24 bit mode and this driver\n"); 540 return; 541 } 542 543 /* link in interrupt with higher level software */ 544 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 545 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 546 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 547 device_xname(&xyc->sc_dev), "intr"); 548 549 callout_init(&xyc->sc_tick_ch, 0); 550 551 /* now we must look for disks using autoconfig */ 552 xa.fullmode = XY_SUB_POLL; 553 xa.booting = 1; 554 555 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 556 (void) config_found(self, (void *) &xa, NULL); 557 558 /* start the watchdog clock */ 559 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 560 561 } 562 563 /* 564 * xymatch: probe for disk. 565 * 566 * note: we almost always say disk is present. this allows us to 567 * spin up and configure a disk after the system is booted (we can 568 * call xyattach!). 569 */ 570 int 571 xymatch(device_t parent, cfdata_t cf, void *aux) 572 { 573 struct xyc_attach_args *xa = aux; 574 575 /* looking for autoconf wildcard or exact match */ 576 577 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 578 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 579 return 0; 580 581 return 1; 582 583 } 584 585 /* 586 * xyattach: attach a disk. this can be called from autoconf and also 587 * from xyopen/xystrategy. 588 */ 589 void 590 xyattach(device_t parent, device_t self, void *aux) 591 { 592 struct xy_softc *xy = device_private(self), *oxy; 593 struct xyc_softc *xyc = device_private(parent); 594 struct xyc_attach_args *xa = aux; 595 int spt, mb, blk, lcv, fmode, s = 0, newstate; 596 struct dkbad *dkb; 597 int rseg, error; 598 bus_dma_segment_t seg; 599 bus_addr_t busaddr; 600 void * dmaddr; 601 char * buf; 602 603 /* 604 * Always re-initialize the disk structure. We want statistics 605 * to start with a clean slate. 606 */ 607 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 608 609 /* if booting, init the xy_softc */ 610 611 if (xa->booting) { 612 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 613 xy->flags = 0; 614 xy->parent = xyc; 615 616 /* init queue of waiting bufs */ 617 618 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 619 620 xy->xyrq = &xyc->reqs[xa->driveno]; 621 622 } 623 xy->xy_drive = xa->driveno; 624 fmode = xa->fullmode; 625 xyc->sc_drives[xa->driveno] = xy; 626 627 /* if not booting, make sure we are the only process in the attach for 628 * this drive. if locked out, sleep on it. */ 629 630 if (!xa->booting) { 631 s = splbio(); 632 while (xy->state == XY_DRIVE_ATTACHING) { 633 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 634 splx(s); 635 return; 636 } 637 } 638 printf("%s at %s", 639 device_xname(&xy->sc_dev), device_xname(&xy->parent->sc_dev)); 640 } 641 642 /* we now have control */ 643 xy->state = XY_DRIVE_ATTACHING; 644 newstate = XY_DRIVE_UNKNOWN; 645 646 buf = NULL; 647 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 648 XYFM_BPS, 649 (void **)&buf, 650 &busaddr)) != 0) { 651 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 652 error); 653 return; 654 } 655 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 656 657 /* first try and reset the drive */ 658 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 659 XYC_DONE(xyc, error); 660 if (error == XY_ERR_DNRY) { 661 printf(" drive %d: off-line\n", xa->driveno); 662 goto done; 663 } 664 if (error) { 665 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 666 goto done; 667 } 668 printf(" drive %d: ready", xa->driveno); 669 670 /* 671 * now set drive parameters (to semi-bogus values) so we can read the 672 * disk label. 673 */ 674 xy->pcyl = xy->ncyl = 1; 675 xy->acyl = 0; 676 xy->nhead = 1; 677 xy->nsect = 1; 678 xy->sectpercyl = 1; 679 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 680 xy->dkb.bt_bad[lcv].bt_cyl = 681 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 682 683 /* read disk label */ 684 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 685 xy->drive_type++) { 686 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 687 dmaddr, fmode); 688 XYC_DONE(xyc, error); 689 if (error == XY_ERR_AOK) break; 690 } 691 692 if (error != XY_ERR_AOK) { 693 aprint_normal("\n"); 694 aprint_error_dev(&xy->sc_dev, "reading disk label failed: %s\n", 695 xyc_e2str(error)); 696 goto done; 697 } 698 printf(" (drive type %d)\n", xy->drive_type); 699 700 newstate = XY_DRIVE_NOLABEL; 701 702 xy->hw_spt = spt = 0; /* XXX needed ? */ 703 /* Attach the disk: must be before getdisklabel to malloc label */ 704 disk_init(&xy->sc_dk, device_xname(&xy->sc_dev), &xydkdriver); 705 disk_attach(&xy->sc_dk); 706 707 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 708 goto done; 709 710 /* inform the user of what is up */ 711 printf("%s: <%s>, pcyl %d\n", device_xname(&xy->sc_dev), 712 buf, xy->pcyl); 713 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 714 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 715 device_xname(&xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 716 XYFM_BPS); 717 718 /* 719 * 450/451 stupidity: the drive type is encoded into the format 720 * of the disk. the drive type in the IOPB must match the drive 721 * type in the format, or you will not be able to do I/O to the 722 * disk (you get header not found errors). if you have two drives 723 * of different sizes that have the same drive type in their 724 * formatting then you are out of luck. 725 * 726 * this problem was corrected in the 753/7053. 727 */ 728 729 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 730 oxy = xyc->sc_drives[lcv]; 731 if (oxy == NULL || oxy == xy) continue; 732 if (oxy->drive_type != xy->drive_type) continue; 733 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 734 xy->nhead != oxy->nhead) { 735 printf("%s: %s and %s must be the same size!\n", 736 device_xname(&xyc->sc_dev), device_xname(&xy->sc_dev), 737 device_xname(&oxy->sc_dev)); 738 panic("xy drive size mismatch"); 739 } 740 } 741 742 743 /* now set the real drive parameters! */ 744 745 blk = (xy->nsect - 1) + 746 ((xy->nhead - 1) * xy->nsect) + 747 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 748 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 749 XYC_DONE(xyc, error); 750 if (error) { 751 aprint_error_dev(&xy->sc_dev, "write drive size failed: %s\n", 752 xyc_e2str(error)); 753 goto done; 754 } 755 newstate = XY_DRIVE_ONLINE; 756 757 /* 758 * read bad144 table. this table resides on the first sector of the 759 * last track of the disk (i.e. second cyl of "acyl" area). 760 */ 761 762 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 763 /* last cyl */ 764 (xy->nhead - 1) * xy->nsect; /* last head */ 765 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 766 dmaddr, fmode); 767 XYC_DONE(xyc, error); 768 if (error) { 769 aprint_error_dev(&xy->sc_dev, "reading bad144 failed: %s\n", 770 xyc_e2str(error)); 771 goto done; 772 } 773 774 /* check dkbad for sanity */ 775 dkb = (struct dkbad *) buf; 776 for (lcv = 0; lcv < 126; lcv++) { 777 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 778 dkb->bt_bad[lcv].bt_cyl == 0) && 779 dkb->bt_bad[lcv].bt_trksec == 0xffff) 780 continue; /* blank */ 781 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 782 break; 783 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 784 break; 785 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 786 break; 787 } 788 if (lcv != 126) { 789 aprint_error_dev(&xy->sc_dev, "warning: invalid bad144 sector!\n"); 790 } else { 791 memcpy(&xy->dkb, buf, XYFM_BPS); 792 } 793 794 done: 795 if (buf != NULL) { 796 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 797 &seg, rseg, XYFM_BPS, buf); 798 } 799 800 xy->state = newstate; 801 if (!xa->booting) { 802 wakeup(&xy->state); 803 splx(s); 804 } 805 } 806 807 /* 808 * end of autoconfig functions 809 */ 810 811 /* 812 * { b , c } d e v s w f u n c t i o n s 813 */ 814 815 /* 816 * xyclose: close device 817 */ 818 int 819 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 820 { 821 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 822 int part = DISKPART(dev); 823 824 /* clear mask bits */ 825 826 switch (fmt) { 827 case S_IFCHR: 828 xy->sc_dk.dk_copenmask &= ~(1 << part); 829 break; 830 case S_IFBLK: 831 xy->sc_dk.dk_bopenmask &= ~(1 << part); 832 break; 833 } 834 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 835 836 return 0; 837 } 838 839 /* 840 * xydump: crash dump system 841 */ 842 int 843 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 844 { 845 int unit, part; 846 struct xy_softc *xy; 847 848 unit = DISKUNIT(dev); 849 part = DISKPART(dev); 850 851 xy = device_lookup_private(&xy_cd, unit); 852 if (!xy) 853 return ENXIO; 854 855 printf("%s%c: crash dump not supported (yet)\n", device_xname(&xy->sc_dev), 856 'a' + part); 857 858 return ENXIO; 859 860 /* outline: globals: "dumplo" == sector number of partition to start 861 * dump at (convert to physical sector with partition table) 862 * "dumpsize" == size of dump in clicks "physmem" == size of physical 863 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 864 * physmem) 865 * 866 * dump a copy of physical memory to the dump device starting at sector 867 * "dumplo" in the swap partition (make sure > 0). map in pages as 868 * we go. use polled I/O. 869 * 870 * XXX how to handle NON_CONTIG? */ 871 872 } 873 874 static enum kauth_device_req 875 xy_getkauthreq(u_char cmd) 876 { 877 enum kauth_device_req req; 878 879 switch (cmd) { 880 case XYCMD_WR: 881 case XYCMD_WTH: 882 case XYCMD_WFM: 883 case XYCMD_WRH: 884 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 885 break; 886 887 case XYCMD_RD: 888 case XYCMD_RTH: 889 case XYCMD_RDH: 890 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 891 break; 892 893 case XYCMD_RDS: 894 case XYCMD_MBD: 895 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 896 break; 897 898 case XYCMD_RST: 899 case XYCMD_SDS: 900 case XYCMD_MBL: 901 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 902 break; 903 904 case XYCMD_NOP: 905 case XYCMD_SK: 906 case XYCMD_ST: 907 case XYCMD_R: 908 default: 909 req = 0; 910 break; 911 } 912 913 return (req); 914 } 915 916 /* 917 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 918 */ 919 int 920 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 921 { 922 struct xy_softc *xy; 923 struct xd_iocmd *xio; 924 int error, s, unit; 925 #ifdef __HAVE_OLD_DISKLABEL 926 struct disklabel newlabel; 927 #endif 928 struct disklabel *lp; 929 930 unit = DISKUNIT(dev); 931 932 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 933 return (ENXIO); 934 935 /* switch on ioctl type */ 936 937 switch (command) { 938 case DIOCSBAD: /* set bad144 info */ 939 if ((flag & FWRITE) == 0) 940 return EBADF; 941 s = splbio(); 942 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 943 splx(s); 944 return 0; 945 946 case DIOCGDINFO: /* get disk label */ 947 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 948 return 0; 949 #ifdef __HAVE_OLD_DISKLABEL 950 case ODIOCGDINFO: 951 newlabel = *(xy->sc_dk.dk_label); 952 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 953 return ENOTTY; 954 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 955 return 0; 956 #endif 957 958 case DIOCGPART: /* get partition info */ 959 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 960 ((struct partinfo *) addr)->part = 961 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 962 return 0; 963 964 case DIOCSDINFO: /* set disk label */ 965 #ifdef __HAVE_OLD_DISKLABEL 966 case ODIOCSDINFO: 967 if (command == ODIOCSDINFO) { 968 memset(&newlabel, 0, sizeof newlabel); 969 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 970 lp = &newlabel; 971 } else 972 #endif 973 lp = (struct disklabel *)addr; 974 975 if ((flag & FWRITE) == 0) 976 return EBADF; 977 error = setdisklabel(xy->sc_dk.dk_label, 978 lp, /* xy->sc_dk.dk_openmask : */ 0, 979 xy->sc_dk.dk_cpulabel); 980 if (error == 0) { 981 if (xy->state == XY_DRIVE_NOLABEL) 982 xy->state = XY_DRIVE_ONLINE; 983 } 984 return error; 985 986 case DIOCWLABEL: /* change write status of disk label */ 987 if ((flag & FWRITE) == 0) 988 return EBADF; 989 if (*(int *) addr) 990 xy->flags |= XY_WLABEL; 991 else 992 xy->flags &= ~XY_WLABEL; 993 return 0; 994 995 case DIOCWDINFO: /* write disk label */ 996 #ifdef __HAVE_OLD_DISKLABEL 997 case ODIOCWDINFO: 998 if (command == ODIOCWDINFO) { 999 memset(&newlabel, 0, sizeof newlabel); 1000 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1001 lp = &newlabel; 1002 } else 1003 #endif 1004 lp = (struct disklabel *)addr; 1005 1006 if ((flag & FWRITE) == 0) 1007 return EBADF; 1008 error = setdisklabel(xy->sc_dk.dk_label, 1009 lp, /* xy->sc_dk.dk_openmask : */ 0, 1010 xy->sc_dk.dk_cpulabel); 1011 if (error == 0) { 1012 if (xy->state == XY_DRIVE_NOLABEL) 1013 xy->state = XY_DRIVE_ONLINE; 1014 1015 /* Simulate opening partition 0 so write succeeds. */ 1016 xy->sc_dk.dk_openmask |= (1 << 0); 1017 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1018 xystrategy, xy->sc_dk.dk_label, 1019 xy->sc_dk.dk_cpulabel); 1020 xy->sc_dk.dk_openmask = 1021 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1022 } 1023 return error; 1024 1025 case DIOSXDCMD: { 1026 enum kauth_device_req req; 1027 1028 xio = (struct xd_iocmd *) addr; 1029 req = xy_getkauthreq(xio->cmd); 1030 if ((error = kauth_authorize_device_passthru(l->l_cred, 1031 dev, req, xio)) != 0) 1032 return (error); 1033 return (xyc_ioctlcmd(xy, dev, xio)); 1034 } 1035 1036 default: 1037 return ENOTTY; 1038 } 1039 } 1040 1041 /* 1042 * xyopen: open drive 1043 */ 1044 1045 int 1046 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1047 { 1048 int unit, part; 1049 struct xy_softc *xy; 1050 struct xyc_attach_args xa; 1051 1052 /* first, could it be a valid target? */ 1053 1054 unit = DISKUNIT(dev); 1055 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1056 return (ENXIO); 1057 part = DISKPART(dev); 1058 1059 /* do we need to attach the drive? */ 1060 1061 if (xy->state == XY_DRIVE_UNKNOWN) { 1062 xa.driveno = xy->xy_drive; 1063 xa.fullmode = XY_SUB_WAIT; 1064 xa.booting = 0; 1065 xyattach((device_t) xy->parent, 1066 (device_t) xy, &xa); 1067 if (xy->state == XY_DRIVE_UNKNOWN) { 1068 return (EIO); 1069 } 1070 } 1071 /* check for partition */ 1072 1073 if (part != RAW_PART && 1074 (part >= xy->sc_dk.dk_label->d_npartitions || 1075 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1076 return (ENXIO); 1077 } 1078 /* set open masks */ 1079 1080 switch (fmt) { 1081 case S_IFCHR: 1082 xy->sc_dk.dk_copenmask |= (1 << part); 1083 break; 1084 case S_IFBLK: 1085 xy->sc_dk.dk_bopenmask |= (1 << part); 1086 break; 1087 } 1088 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1089 1090 return 0; 1091 } 1092 1093 int 1094 xyread(dev_t dev, struct uio *uio, int flags) 1095 { 1096 1097 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1098 } 1099 1100 int 1101 xywrite(dev_t dev, struct uio *uio, int flags) 1102 { 1103 1104 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1105 } 1106 1107 1108 /* 1109 * xysize: return size of a partition for a dump 1110 */ 1111 1112 int 1113 xysize(dev_t dev) 1114 { 1115 struct xy_softc *xysc; 1116 int unit, part, size, omask; 1117 1118 /* valid unit? */ 1119 unit = DISKUNIT(dev); 1120 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1121 return (-1); 1122 1123 part = DISKPART(dev); 1124 omask = xysc->sc_dk.dk_openmask & (1 << part); 1125 1126 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1127 return (-1); 1128 1129 /* do it */ 1130 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1131 size = -1; /* only give valid size for swap partitions */ 1132 else 1133 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1134 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1135 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1136 return (-1); 1137 return (size); 1138 } 1139 1140 /* 1141 * xystrategy: buffering system interface to xy. 1142 */ 1143 1144 void 1145 xystrategy(struct buf *bp) 1146 { 1147 struct xy_softc *xy; 1148 int s, unit; 1149 struct xyc_attach_args xa; 1150 struct disklabel *lp; 1151 daddr_t blkno; 1152 1153 unit = DISKUNIT(bp->b_dev); 1154 1155 /* check for live device */ 1156 1157 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1158 bp->b_blkno < 0 || 1159 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1160 bp->b_error = EINVAL; 1161 goto done; 1162 } 1163 /* do we need to attach the drive? */ 1164 1165 if (xy->state == XY_DRIVE_UNKNOWN) { 1166 xa.driveno = xy->xy_drive; 1167 xa.fullmode = XY_SUB_WAIT; 1168 xa.booting = 0; 1169 xyattach((device_t)xy->parent, (device_t)xy, &xa); 1170 if (xy->state == XY_DRIVE_UNKNOWN) { 1171 bp->b_error = EIO; 1172 goto done; 1173 } 1174 } 1175 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1176 /* no I/O to unlabeled disks, unless raw partition */ 1177 bp->b_error = EIO; 1178 goto done; 1179 } 1180 /* short circuit zero length request */ 1181 1182 if (bp->b_bcount == 0) 1183 goto done; 1184 1185 /* check bounds with label (disksubr.c). Determine the size of the 1186 * transfer, and make sure it is within the boundaries of the 1187 * partition. Adjust transfer if needed, and signal errors or early 1188 * completion. */ 1189 1190 lp = xy->sc_dk.dk_label; 1191 1192 if (bounds_check_with_label(&xy->sc_dk, bp, 1193 (xy->flags & XY_WLABEL) != 0) <= 0) 1194 goto done; 1195 1196 /* 1197 * Now convert the block number to absolute and put it in 1198 * terms of the device's logical block size. 1199 */ 1200 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1201 if (DISKPART(bp->b_dev) != RAW_PART) 1202 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1203 1204 bp->b_rawblkno = blkno; 1205 1206 /* 1207 * now we know we have a valid buf structure that we need to do I/O 1208 * on. 1209 */ 1210 s = splbio(); /* protect the queues */ 1211 1212 bufq_put(xy->xyq, bp); 1213 1214 /* start 'em up */ 1215 1216 xyc_start(xy->parent, NULL); 1217 1218 /* done! */ 1219 1220 splx(s); 1221 return; 1222 1223 done: /* tells upper layers we are done with this 1224 * buf */ 1225 bp->b_resid = bp->b_bcount; 1226 biodone(bp); 1227 } 1228 /* 1229 * end of {b,c}devsw functions 1230 */ 1231 1232 /* 1233 * i n t e r r u p t f u n c t i o n 1234 * 1235 * xycintr: hardware interrupt. 1236 */ 1237 int 1238 xycintr(void *v) 1239 { 1240 struct xyc_softc *xycsc = v; 1241 1242 /* kick the event counter */ 1243 1244 xycsc->sc_intrcnt.ev_count++; 1245 1246 /* remove as many done IOPBs as possible */ 1247 1248 xyc_remove_iorq(xycsc); 1249 1250 /* start any iorq's already waiting */ 1251 1252 xyc_start(xycsc, NULL); 1253 1254 return (1); 1255 } 1256 /* 1257 * end of interrupt function 1258 */ 1259 1260 /* 1261 * i n t e r n a l f u n c t i o n s 1262 */ 1263 1264 /* 1265 * xyc_rqinit: fill out the fields of an I/O request 1266 */ 1267 1268 inline void 1269 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) 1270 { 1271 rq->xyc = xyc; 1272 rq->xy = xy; 1273 rq->ttl = XYC_MAXTTL + 10; 1274 rq->mode = md; 1275 rq->tries = rq->errnum = rq->lasterror = 0; 1276 rq->blockno = blk; 1277 rq->sectcnt = cnt; 1278 rq->dbuf = db; 1279 rq->buf = bp; 1280 } 1281 1282 /* 1283 * xyc_rqtopb: load up an IOPB based on an iorq 1284 */ 1285 1286 void 1287 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1288 { 1289 u_long block, dp; 1290 1291 /* normal IOPB case, standard stuff */ 1292 1293 /* chain bit handled later */ 1294 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1295 iopb->com = cmd; 1296 iopb->errnum = 0; 1297 iopb->errs = 0; 1298 iopb->done = 0; 1299 if (iorq->xy) { 1300 iopb->unit = iorq->xy->xy_drive; 1301 iopb->dt = iorq->xy->drive_type; 1302 } else { 1303 iopb->unit = 0; 1304 iopb->dt = 0; 1305 } 1306 block = iorq->blockno; 1307 if (iorq->xy == NULL || block == 0) { 1308 iopb->sect = iopb->head = iopb->cyl = 0; 1309 } else { 1310 iopb->sect = block % iorq->xy->nsect; 1311 block = block / iorq->xy->nsect; 1312 iopb->head = block % iorq->xy->nhead; 1313 block = block / iorq->xy->nhead; 1314 iopb->cyl = block; 1315 } 1316 iopb->scnt = iorq->sectcnt; 1317 dp = (u_long) iorq->dbuf; 1318 if (iorq->dbuf == NULL) { 1319 iopb->dataa = 0; 1320 iopb->datar = 0; 1321 } else { 1322 iopb->dataa = (dp & 0xffff); 1323 iopb->datar = ((dp & 0xff0000) >> 16); 1324 } 1325 iopb->subfn = subfun; 1326 } 1327 1328 1329 /* 1330 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1331 */ 1332 1333 int 1334 xyc_unbusy(struct xyc *xyc, int del) 1335 { 1336 while (del-- > 0) { 1337 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1338 break; 1339 DELAY(1); 1340 } 1341 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1342 } 1343 1344 /* 1345 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1346 * note that NORM requests are handled separately. 1347 */ 1348 int 1349 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1350 int scnt, char *dptr, int fullmode) 1351 { 1352 int submode = XY_STATE(fullmode); 1353 struct xy_iorq *iorq = xycsc->ciorq; 1354 struct xy_iopb *iopb = xycsc->ciopb; 1355 1356 /* 1357 * is someone else using the control iopq wait for it if we can 1358 */ 1359 start: 1360 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1361 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1362 return(XY_ERR_FAIL); 1363 goto start; 1364 } 1365 1366 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1367 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1368 iorq->mode = XY_SUB_FREE; 1369 printf("%s: stole control iopb\n", device_xname(&xycsc->sc_dev)); 1370 } 1371 1372 /* init iorq/iopb */ 1373 1374 xyc_rqinit(iorq, xycsc, 1375 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1376 fullmode, block, scnt, dptr, NULL); 1377 1378 /* load IOPB from iorq */ 1379 1380 xyc_rqtopb(iorq, iopb, cmd, subfn); 1381 1382 /* submit it for processing */ 1383 1384 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1385 1386 return(XY_ERR_AOK); 1387 } 1388 1389 /* 1390 * xyc_startbuf 1391 * start a buffer for running 1392 */ 1393 1394 int 1395 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1396 { 1397 int partno, error; 1398 struct xy_iorq *iorq; 1399 struct xy_iopb *iopb; 1400 u_long block; 1401 1402 iorq = xysc->xyrq; 1403 iopb = iorq->iopb; 1404 1405 /* get buf */ 1406 1407 if (bp == NULL) 1408 panic("xyc_startbuf null buf"); 1409 1410 partno = DISKPART(bp->b_dev); 1411 #ifdef XYC_DEBUG 1412 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(&xysc->sc_dev), 1413 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1414 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1415 bp->b_bcount, bp->b_data); 1416 #endif 1417 1418 /* 1419 * load request. 1420 * 1421 * note that iorq points to the buffer as mapped into DVMA space, 1422 * where as the bp->b_data points to its non-DVMA mapping. 1423 */ 1424 1425 block = bp->b_rawblkno; 1426 1427 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1428 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1429 if (error != 0) { 1430 aprint_error_dev(&xycsc->sc_dev, "warning: cannot load DMA map\n"); 1431 return (XY_ERR_FAIL); /* XXX: need some sort of 1432 * call-back scheme here? */ 1433 } 1434 1435 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1436 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1437 ? BUS_DMASYNC_PREREAD 1438 : BUS_DMASYNC_PREWRITE); 1439 1440 /* init iorq and load iopb from it */ 1441 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1442 bp->b_bcount / XYFM_BPS, 1443 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1444 bp); 1445 1446 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1447 1448 /* Instrumentation. */ 1449 disk_busy(&xysc->sc_dk); 1450 1451 return (XY_ERR_AOK); 1452 } 1453 1454 1455 /* 1456 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1457 * if ok. if it fail returns an error code. type is XY_SUB_*. 1458 * 1459 * note: caller frees iorq in all cases except NORM 1460 * 1461 * return value: 1462 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1463 * WAIT: XY_AOK (success), <error-code> (failed) 1464 * POLL: <same as WAIT> 1465 * NOQ : <same as NORM> 1466 * 1467 * there are three sources for i/o requests: 1468 * [1] xystrategy: normal block I/O, using "struct buf" system. 1469 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1470 * [3] open/ioctl: these are I/O requests done in the context of a process, 1471 * and the process should block until they are done. 1472 * 1473 * software state is stored in the iorq structure. each iorq has an 1474 * iopb structure. the hardware understands the iopb structure. 1475 * every command must go through an iopb. a 450 handles one iopb at a 1476 * time, where as a 451 can take them in chains. [the 450 claims it 1477 * can handle chains, but is appears to be buggy...] iopb are allocated 1478 * in DVMA space at boot up time. each disk gets one iopb, and the 1479 * controller gets one (for POLL and WAIT commands). what happens if 1480 * the iopb is busy? for i/o type [1], the buffers are queued at the 1481 * "buff" layer and * picked up later by the interrupt routine. for case 1482 * [2] we can only be blocked if there is a WAIT type I/O request being 1483 * run. since this can only happen when we are crashing, we wait a sec 1484 * and then steal the IOPB. for case [3] the process can sleep 1485 * on the iorq free list until some iopbs are available. 1486 */ 1487 1488 1489 int 1490 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1491 { 1492 struct xy_iopb *dmaiopb; 1493 1494 #ifdef XYC_DEBUG 1495 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1496 device_xname(&xycsc->sc_dev), iorq, type); 1497 #endif 1498 1499 /* first check and see if controller is busy */ 1500 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1501 #ifdef XYC_DEBUG 1502 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1503 #endif 1504 if (type == XY_SUB_NOQ) 1505 return (XY_ERR_FAIL); /* failed */ 1506 switch (type) { 1507 case XY_SUB_NORM: 1508 return XY_ERR_AOK; /* success */ 1509 case XY_SUB_WAIT: 1510 while (iorq->iopb->done == 0) { 1511 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1512 } 1513 return (iorq->errnum); 1514 case XY_SUB_POLL: /* steal controller */ 1515 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1516 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1517 panic("xyc_submit_iorq: stuck xyc"); 1518 printf("%s: stole controller\n", 1519 device_xname(&xycsc->sc_dev)); 1520 break; 1521 default: 1522 panic("xyc_submit_iorq adding"); 1523 } 1524 } 1525 1526 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1527 if (dmaiopb == NULL) { /* nothing doing? */ 1528 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1529 return(XY_ERR_AOK); 1530 panic("xyc_submit_iorq: xyc_chain failed!"); 1531 } 1532 1533 XYC_GO(xycsc->xyc, dmaiopb); 1534 1535 /* command now running, wrap it up */ 1536 switch (type) { 1537 case XY_SUB_NORM: 1538 case XY_SUB_NOQ: 1539 return (XY_ERR_AOK); /* success */ 1540 case XY_SUB_WAIT: 1541 while (iorq->iopb->done == 0) { 1542 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1543 } 1544 return (iorq->errnum); 1545 case XY_SUB_POLL: 1546 return (xyc_piodriver(xycsc, iorq)); 1547 default: 1548 panic("xyc_submit_iorq wrap up"); 1549 } 1550 panic("xyc_submit_iorq"); 1551 return 0; /* not reached */ 1552 } 1553 1554 1555 /* 1556 * xyc_chain: build a chain. return dvma address of first element in 1557 * the chain. iorq != NULL: means we only want that item on the chain. 1558 */ 1559 1560 struct xy_iopb * 1561 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1562 { 1563 int togo, chain, hand; 1564 1565 memset(xycsc->xy_chain, 0, 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(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1634 { 1635 int nreset = 0; 1636 int retval = 0; 1637 u_long res; 1638 #ifdef XYC_DEBUG 1639 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(&xycsc->sc_dev), iorq); 1640 #endif 1641 1642 while (iorq->iopb->done == 0) { 1643 1644 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1645 1646 /* we expect some progress soon */ 1647 if (res == XY_ERR_FAIL && nreset >= 2) { 1648 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1649 #ifdef XYC_DEBUG 1650 printf("xyc_piodriver: timeout\n"); 1651 #endif 1652 return (XY_ERR_FAIL); 1653 } 1654 if (res == XY_ERR_FAIL) { 1655 if (xyc_reset(xycsc, 0, 1656 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1657 XY_ERR_FAIL, 1658 0) == XY_ERR_FAIL) 1659 return (XY_ERR_FAIL); /* flushes all but POLL 1660 * requests, resets */ 1661 continue; 1662 } 1663 1664 xyc_remove_iorq(xycsc); /* may resubmit request */ 1665 1666 if (iorq->iopb->done == 0) 1667 xyc_start(xycsc, iorq); 1668 } 1669 1670 /* get return value */ 1671 1672 retval = iorq->errnum; 1673 1674 #ifdef XYC_DEBUG 1675 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1676 iorq->errnum, xyc_e2str(iorq->errnum)); 1677 #endif 1678 1679 /* start up any bufs that have queued */ 1680 1681 xyc_start(xycsc, NULL); 1682 1683 return (retval); 1684 } 1685 1686 /* 1687 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1688 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1689 */ 1690 void 1691 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1692 { 1693 struct xy_iopb tmpiopb; 1694 struct xy_iopb *iopb; 1695 int del; 1696 1697 iopb = xycsc->ciopb; 1698 1699 /* Save contents */ 1700 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1701 1702 iopb->chen = iopb->done = iopb->errs = 0; 1703 iopb->ien = 0; 1704 iopb->com = XYCMD_RST; 1705 iopb->unit = xysc->xy_drive; 1706 1707 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1708 1709 del = XYC_RESETUSEC; 1710 while (del > 0) { 1711 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1712 break; 1713 DELAY(1); 1714 del--; 1715 } 1716 1717 if (del <= 0 || iopb->errs) { 1718 printf("%s: off-line: %s\n", device_xname(&xycsc->sc_dev), 1719 xyc_e2str(iopb->errnum)); 1720 del = xycsc->xyc->xyc_rsetup; 1721 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1722 panic("xyc_reset"); 1723 } else { 1724 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1725 } 1726 1727 /* Restore contents */ 1728 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1729 } 1730 1731 1732 /* 1733 * xyc_reset: reset everything: requests are marked as errors except 1734 * a polled request (which is resubmitted) 1735 */ 1736 int 1737 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1738 int error, struct xy_softc *xysc) 1739 { 1740 int del = 0, lcv, retval = XY_ERR_AOK; 1741 1742 /* soft reset hardware */ 1743 1744 if (!quiet) 1745 printf("%s: soft reset\n", device_xname(&xycsc->sc_dev)); 1746 del = xycsc->xyc->xyc_rsetup; 1747 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1748 if (del == XY_ERR_FAIL) { 1749 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1750 retval = XY_ERR_FAIL; 1751 } 1752 if (xysc) 1753 xyc_xyreset(xycsc, xysc); 1754 1755 /* fix queues based on "blast-mode" */ 1756 1757 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1758 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1759 1760 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1761 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1762 XY_STATE(iorq->mode) != XY_SUB_NORM) 1763 /* is it active? */ 1764 continue; 1765 1766 if (blastmode == XY_RSET_ALL || 1767 blastmode != iorq) { 1768 /* failed */ 1769 iorq->errnum = error; 1770 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1771 switch (XY_STATE(iorq->mode)) { 1772 case XY_SUB_NORM: 1773 iorq->buf->b_error = EIO; 1774 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1775 1776 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1777 iorq->dmamap->dm_mapsize, 1778 (iorq->buf->b_flags & B_READ) 1779 ? BUS_DMASYNC_POSTREAD 1780 : BUS_DMASYNC_POSTWRITE); 1781 1782 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1783 1784 (void)bufq_get(iorq->xy->xyq); 1785 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1786 (xycsc->reqs[lcv].buf->b_bcount - 1787 xycsc->reqs[lcv].buf->b_resid), 1788 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1789 biodone(iorq->buf); 1790 iorq->mode = XY_SUB_FREE; 1791 break; 1792 case XY_SUB_WAIT: 1793 wakeup(iorq); 1794 case XY_SUB_POLL: 1795 iorq->mode = 1796 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1797 break; 1798 } 1799 1800 } else { 1801 1802 /* resubmit, no need to do anything here */ 1803 } 1804 } 1805 1806 /* 1807 * now, if stuff is waiting, start it. 1808 * since we just reset it should go 1809 */ 1810 xyc_start(xycsc, NULL); 1811 1812 return (retval); 1813 } 1814 1815 /* 1816 * xyc_start: start waiting buffers 1817 */ 1818 1819 void 1820 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1821 { 1822 int lcv; 1823 struct xy_softc *xy; 1824 1825 if (iorq == NULL) { 1826 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1827 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1828 if (bufq_peek(xy->xyq) == NULL) continue; 1829 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1830 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1831 } 1832 } 1833 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1834 } 1835 1836 /* 1837 * xyc_remove_iorq: remove "done" IOPB's. 1838 */ 1839 1840 int 1841 xyc_remove_iorq(struct xyc_softc *xycsc) 1842 { 1843 int errnum, rq, comm, errs; 1844 struct xyc *xyc = xycsc->xyc; 1845 u_long addr; 1846 struct xy_iopb *iopb; 1847 struct xy_iorq *iorq; 1848 struct buf *bp; 1849 1850 if (xyc->xyc_csr & XYC_DERR) { 1851 /* 1852 * DOUBLE ERROR: should never happen under normal use. This 1853 * error is so bad, you can't even tell which IOPB is bad, so 1854 * we dump them all. 1855 */ 1856 errnum = XY_ERR_DERR; 1857 aprint_error_dev(&xycsc->sc_dev, "DOUBLE ERROR!\n"); 1858 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1859 aprint_error_dev(&xycsc->sc_dev, "soft reset failed!\n"); 1860 panic("xyc_remove_iorq: controller DEAD"); 1861 } 1862 return (XY_ERR_AOK); 1863 } 1864 1865 /* 1866 * get iopb that is done, loop down the chain 1867 */ 1868 1869 if (xyc->xyc_csr & XYC_ERR) { 1870 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1871 } 1872 if (xyc->xyc_csr & XYC_IPND) { 1873 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1874 } 1875 1876 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1877 iorq = xycsc->xy_chain[rq]; 1878 if (iorq == NULL) break; /* done ! */ 1879 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1880 continue; /* free, or done */ 1881 iopb = iorq->iopb; 1882 if (iopb->done == 0) 1883 continue; /* not done yet */ 1884 1885 comm = iopb->com; 1886 errs = iopb->errs; 1887 1888 if (errs) 1889 iorq->errnum = iopb->errnum; 1890 else 1891 iorq->errnum = 0; 1892 1893 /* handle non-fatal errors */ 1894 1895 if (errs && 1896 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1897 continue; /* AOK: we resubmitted it */ 1898 1899 1900 /* this iorq is now done (hasn't been restarted or anything) */ 1901 1902 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1903 xyc_perror(iorq, iopb, 0); 1904 1905 /* now, if read/write check to make sure we got all the data 1906 * we needed. (this may not be the case if we got an error in 1907 * the middle of a multisector request). */ 1908 1909 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1910 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1911 /* we just successfully processed a bad144 sector 1912 * note: if we are in bad 144 mode, the pointers have 1913 * been advanced already (see above) and are pointing 1914 * at the bad144 sector. to exit bad144 mode, we 1915 * must advance the pointers 1 sector and issue a new 1916 * request if there are still sectors left to process 1917 * 1918 */ 1919 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1920 1921 /* exit b144 mode */ 1922 iorq->mode = iorq->mode & (~XY_MODE_B144); 1923 1924 if (iorq->sectcnt) { /* more to go! */ 1925 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1926 iopb->errs = iopb->done = 0; 1927 iorq->tries = 0; 1928 iopb->scnt = iorq->sectcnt; 1929 iopb->cyl = iorq->blockno / 1930 iorq->xy->sectpercyl; 1931 iopb->head = 1932 (iorq->blockno / iorq->xy->nhead) % 1933 iorq->xy->nhead; 1934 iopb->sect = iorq->blockno % XYFM_BPS; 1935 addr = (u_long) iorq->dbuf; 1936 iopb->dataa = (addr & 0xffff); 1937 iopb->datar = ((addr & 0xff0000) >> 16); 1938 /* will resubit at end */ 1939 continue; 1940 } 1941 } 1942 /* final cleanup, totally done with this request */ 1943 1944 switch (XY_STATE(iorq->mode)) { 1945 case XY_SUB_NORM: 1946 bp = iorq->buf; 1947 if (errs) { 1948 bp->b_error = EIO; 1949 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1950 } else { 1951 bp->b_resid = 0; /* done */ 1952 } 1953 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1954 iorq->dmamap->dm_mapsize, 1955 (iorq->buf->b_flags & B_READ) 1956 ? BUS_DMASYNC_POSTREAD 1957 : BUS_DMASYNC_POSTWRITE); 1958 1959 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1960 1961 (void)bufq_get(iorq->xy->xyq); 1962 disk_unbusy(&iorq->xy->sc_dk, 1963 (bp->b_bcount - bp->b_resid), 1964 (bp->b_flags & B_READ)); 1965 iorq->mode = XY_SUB_FREE; 1966 biodone(bp); 1967 break; 1968 case XY_SUB_WAIT: 1969 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1970 wakeup(iorq); 1971 break; 1972 case XY_SUB_POLL: 1973 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1974 break; 1975 } 1976 } 1977 1978 return (XY_ERR_AOK); 1979 } 1980 1981 /* 1982 * xyc_perror: print error. 1983 * - if still_trying is true: we got an error, retried and got a 1984 * different error. in that case lasterror is the old error, 1985 * and errnum is the new one. 1986 * - if still_trying is not true, then if we ever had an error it 1987 * is in lasterror. also, if iorq->errnum == 0, then we recovered 1988 * from that error (otherwise iorq->errnum == iorq->lasterror). 1989 */ 1990 void 1991 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1992 { 1993 1994 int error = iorq->lasterror; 1995 1996 printf("%s", (iorq->xy) ? device_xname(&iorq->xy->sc_dev) 1997 : device_xname(&iorq->xyc->sc_dev)); 1998 if (iorq->buf) 1999 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2000 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2001 printf("%s %d/%d/%d: ", 2002 (iopb->com == XYCMD_RD) ? "read" : "write", 2003 iopb->cyl, iopb->head, iopb->sect); 2004 printf("%s", xyc_e2str(error)); 2005 2006 if (still_trying) 2007 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2008 else 2009 if (iorq->errnum == 0) 2010 printf(" [recovered in %d tries]", iorq->tries); 2011 2012 printf("\n"); 2013 } 2014 2015 /* 2016 * xyc_error: non-fatal error encountered... recover. 2017 * return AOK if resubmitted, return FAIL if this iopb is done 2018 */ 2019 int 2020 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2021 int comm) 2022 { 2023 int errnum = iorq->errnum; 2024 int erract = xyc_entoact(errnum); 2025 int oldmode, advance; 2026 #ifdef __sparc__ 2027 int i; 2028 #endif 2029 2030 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2031 oldmode = iorq->mode; 2032 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2033 /* make xyc_start ignore us */ 2034 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2035 iorq->mode = oldmode; 2036 } 2037 /* check for read/write to a sector in bad144 table if bad: redirect 2038 * request to bad144 area */ 2039 2040 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2041 (iorq->mode & XY_MODE_B144) == 0) { 2042 advance = iorq->sectcnt - iopb->scnt; 2043 XYC_ADVANCE(iorq, advance); 2044 #ifdef __sparc__ 2045 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2046 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2047 iorq->blockno % iorq->xy->nsect)) != -1) { 2048 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2049 * redirect */ 2050 iopb->errnum = iopb->done = iopb->errs = 0; 2051 iopb->scnt = 1; 2052 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2053 /* second to last acyl */ 2054 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2055 * standard */ 2056 iopb->head = i / iorq->xy->nhead; 2057 iopb->sect = i % iorq->xy->nhead; 2058 /* will resubmit when we come out of remove_iorq */ 2059 return (XY_ERR_AOK); /* recovered! */ 2060 } 2061 #endif 2062 } 2063 2064 /* 2065 * it isn't a bad144 sector, must be real error! see if we can retry 2066 * it? 2067 */ 2068 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2069 xyc_perror(iorq, iopb, 1); /* inform of error state 2070 * change */ 2071 iorq->lasterror = errnum; 2072 2073 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2074 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2075 iorq->tries++; 2076 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2077 /* will resubmit at end of remove_iorq */ 2078 return (XY_ERR_AOK); /* recovered! */ 2079 } 2080 2081 /* failed to recover from this error */ 2082 return (XY_ERR_FAIL); 2083 } 2084 2085 /* 2086 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2087 */ 2088 void 2089 xyc_tick(void *arg) 2090 { 2091 struct xyc_softc *xycsc = arg; 2092 int lcv, s, reset = 0; 2093 2094 /* reduce ttl for each request if one goes to zero, reset xyc */ 2095 s = splbio(); 2096 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2097 if (xycsc->reqs[lcv].mode == 0 || 2098 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2099 continue; 2100 xycsc->reqs[lcv].ttl--; 2101 if (xycsc->reqs[lcv].ttl == 0) 2102 reset = 1; 2103 } 2104 if (reset) { 2105 printf("%s: watchdog timeout\n", device_xname(&xycsc->sc_dev)); 2106 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2107 } 2108 splx(s); 2109 2110 /* until next time */ 2111 2112 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2113 } 2114 2115 /* 2116 * xyc_ioctlcmd: this function provides a user level interface to the 2117 * controller via ioctl. this allows "format" programs to be written 2118 * in user code, and is also useful for some debugging. we return 2119 * an error code. called at user priority. 2120 * 2121 * XXX missing a few commands (see the 7053 driver for ideas) 2122 */ 2123 int 2124 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2125 { 2126 int s, rqno, dummy = 0; 2127 char *dvmabuf = NULL, *buf = NULL; 2128 struct xyc_softc *xycsc; 2129 int rseg, error; 2130 bus_dma_segment_t seg; 2131 2132 /* check sanity of requested command */ 2133 2134 switch (xio->cmd) { 2135 2136 case XYCMD_NOP: /* no op: everything should be zero */ 2137 if (xio->subfn || xio->dptr || xio->dlen || 2138 xio->block || xio->sectcnt) 2139 return (EINVAL); 2140 break; 2141 2142 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2143 case XYCMD_WR: 2144 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2145 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2146 return (EINVAL); 2147 break; 2148 2149 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2150 return (EINVAL); 2151 2152 break; 2153 2154 default: 2155 return (EINVAL);/* ??? */ 2156 } 2157 2158 xycsc = xy->parent; 2159 2160 /* create DVMA buffer for request if needed */ 2161 if (xio->dlen) { 2162 bus_addr_t busbuf; 2163 2164 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2165 &seg, &rseg, 2166 xio->dlen, (void **)&buf, 2167 &busbuf)) != 0) { 2168 return (error); 2169 } 2170 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2171 2172 if (xio->cmd == XYCMD_WR) { 2173 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2174 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2175 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2176 return (error); 2177 } 2178 } 2179 } 2180 /* do it! */ 2181 2182 error = 0; 2183 s = splbio(); 2184 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2185 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2186 if (rqno == XY_ERR_FAIL) { 2187 error = EIO; 2188 goto done; 2189 } 2190 xio->errnum = xycsc->ciorq->errnum; 2191 xio->tries = xycsc->ciorq->tries; 2192 XYC_DONE(xycsc, dummy); 2193 2194 if (xio->cmd == XYCMD_RD) 2195 error = copyout(buf, xio->dptr, xio->dlen); 2196 2197 done: 2198 splx(s); 2199 if (dvmabuf) { 2200 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2201 xio->dlen, buf); 2202 } 2203 return (error); 2204 } 2205 2206 /* 2207 * xyc_e2str: convert error code number into an error string 2208 */ 2209 const char * 2210 xyc_e2str(int no) 2211 { 2212 switch (no) { 2213 case XY_ERR_FAIL: 2214 return ("Software fatal error"); 2215 case XY_ERR_DERR: 2216 return ("DOUBLE ERROR"); 2217 case XY_ERR_AOK: 2218 return ("Successful completion"); 2219 case XY_ERR_IPEN: 2220 return("Interrupt pending"); 2221 case XY_ERR_BCFL: 2222 return("Busy conflict"); 2223 case XY_ERR_TIMO: 2224 return("Operation timeout"); 2225 case XY_ERR_NHDR: 2226 return("Header not found"); 2227 case XY_ERR_HARD: 2228 return("Hard ECC error"); 2229 case XY_ERR_ICYL: 2230 return("Illegal cylinder address"); 2231 case XY_ERR_ISEC: 2232 return("Illegal sector address"); 2233 case XY_ERR_SMAL: 2234 return("Last sector too small"); 2235 case XY_ERR_SACK: 2236 return("Slave ACK error (non-existent memory)"); 2237 case XY_ERR_CHER: 2238 return("Cylinder and head/header error"); 2239 case XY_ERR_SRTR: 2240 return("Auto-seek retry successful"); 2241 case XY_ERR_WPRO: 2242 return("Write-protect error"); 2243 case XY_ERR_UIMP: 2244 return("Unimplemented command"); 2245 case XY_ERR_DNRY: 2246 return("Drive not ready"); 2247 case XY_ERR_SZER: 2248 return("Sector count zero"); 2249 case XY_ERR_DFLT: 2250 return("Drive faulted"); 2251 case XY_ERR_ISSZ: 2252 return("Illegal sector size"); 2253 case XY_ERR_SLTA: 2254 return("Self test A"); 2255 case XY_ERR_SLTB: 2256 return("Self test B"); 2257 case XY_ERR_SLTC: 2258 return("Self test C"); 2259 case XY_ERR_SOFT: 2260 return("Soft ECC error"); 2261 case XY_ERR_SFOK: 2262 return("Soft ECC error recovered"); 2263 case XY_ERR_IHED: 2264 return("Illegal head"); 2265 case XY_ERR_DSEQ: 2266 return("Disk sequencer error"); 2267 case XY_ERR_SEEK: 2268 return("Seek error"); 2269 default: 2270 return ("Unknown error"); 2271 } 2272 } 2273 2274 int 2275 xyc_entoact(int errnum) 2276 { 2277 switch (errnum) { 2278 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2279 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2280 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2281 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2282 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2283 2284 return(XY_ERA_PROG); /* program error ! */ 2285 2286 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2287 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2288 case XY_ERR_SOFT: 2289 2290 return(XY_ERA_HARD); /* hard error, retry */ 2291 2292 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2293 2294 return(XY_ERA_RSET); /* hard error reset */ 2295 2296 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2297 2298 return(XY_ERA_SOFT); /* an FYI error */ 2299 2300 case XY_ERR_WPRO: 2301 2302 return(XY_ERA_WPRO); /* write protect */ 2303 } 2304 2305 return(XY_ERA_PROG); /* ??? */ 2306 } 2307
Indexes created Tue Sep 30 20:09:53 GMT 2025