xy.c revision 1.96
1 /* $NetBSD: xy.c,v 1.96 2014/07/25 08:02:20 dholland 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 1.96 2014/07/25 08:02:20 dholland 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_NEW(xyc, sizeof(struct xyc_softc), 194 xycmatch, xycattach, NULL, NULL); 195 196 CFATTACH_DECL_NEW(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 .d_open = xyopen, 212 .d_close = xyclose, 213 .d_strategy = xystrategy, 214 .d_ioctl = xyioctl, 215 .d_dump = xydump, 216 .d_psize = xysize, 217 .d_discard = nodiscard, 218 .d_flag = D_DISK 219 }; 220 221 const struct cdevsw xy_cdevsw = { 222 .d_open = xyopen, 223 .d_close = xyclose, 224 .d_read = xyread, 225 .d_write = xywrite, 226 .d_ioctl = xyioctl, 227 .d_stop = nostop, 228 .d_tty = notty, 229 .d_poll = nopoll, 230 .d_mmap = nommap, 231 .d_kqfilter = nokqfilter, 232 .d_flag = D_DISK 233 }; 234 235 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 236 int driveno; /* unit number */ 237 int fullmode; /* submit mode */ 238 int booting; /* are we booting or not? */ 239 }; 240 241 /* 242 * dkdriver 243 */ 244 245 struct dkdriver xydkdriver = { xystrategy }; 246 247 /* 248 * start: disk label fix code (XXX) 249 */ 250 251 static void *xy_labeldata; 252 253 static void 254 xydummystrat(struct buf *bp) 255 { 256 if (bp->b_bcount != XYFM_BPS) 257 panic("xydummystrat"); 258 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 259 bp->b_oflags |= BO_DONE; 260 bp->b_cflags &= ~BC_BUSY; 261 } 262 263 int 264 xygetdisklabel(struct xy_softc *xy, void *b) 265 { 266 const char *err; 267 #if defined(__sparc__) || defined(sun3) 268 struct sun_disklabel *sdl; 269 #endif 270 271 /* We already have the label data in `b'; setup for dummy strategy */ 272 xy_labeldata = b; 273 274 /* Required parameter for readdisklabel() */ 275 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 276 277 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 278 xydummystrat, 279 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 280 if (err) { 281 printf("%s: %s\n", device_xname(xy->sc_dev), err); 282 return(XY_ERR_FAIL); 283 } 284 285 #if defined(__sparc__) || defined(sun3) 286 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 287 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 288 if (sdl->sl_magic == SUN_DKMAGIC) { 289 xy->pcyl = sdl->sl_pcylinders; 290 } else 291 #endif 292 { 293 printf("%s: WARNING: no `pcyl' in disk label.\n", 294 device_xname(xy->sc_dev)); 295 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 296 xy->sc_dk.dk_label->d_acylinders; 297 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 298 device_xname(xy->sc_dev), xy->pcyl); 299 } 300 301 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 302 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 303 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 304 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 305 xy->sectpercyl = xy->nhead * xy->nsect; 306 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 307 * sun->bsd */ 308 return(XY_ERR_AOK); 309 } 310 311 /* 312 * end: disk label fix code (XXX) 313 */ 314 315 /* 316 * Shorthand for allocating, mapping and loading a DMA buffer 317 */ 318 int 319 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) 320 { 321 int nseg; 322 int error; 323 324 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 325 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 326 return (error); 327 } 328 329 if ((error = bus_dmamem_map(tag, seg, nseg, 330 len, kvap, 331 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 332 bus_dmamem_free(tag, seg, nseg); 333 return (error); 334 } 335 336 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 337 BUS_DMA_NOWAIT)) != 0) { 338 bus_dmamem_unmap(tag, *kvap, len); 339 bus_dmamem_free(tag, seg, nseg); 340 return (error); 341 } 342 343 *dmap = map->dm_segs[0].ds_addr; 344 *nsegp = nseg; 345 return (0); 346 } 347 348 void 349 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) 350 { 351 352 bus_dmamap_unload(tag, map); 353 bus_dmamem_unmap(tag, kva, len); 354 bus_dmamem_free(tag, seg, nseg); 355 } 356 357 358 /* 359 * a u t o c o n f i g f u n c t i o n s 360 */ 361 362 /* 363 * xycmatch: determine if xyc is present or not. we do a 364 * soft reset to detect the xyc. 365 */ 366 int 367 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 368 { 369 struct xyc *xyc = (void *)handle; /* XXX */ 370 371 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 372 } 373 374 int 375 xycmatch(device_t parent, cfdata_t cf, void *aux) 376 { 377 struct vme_attach_args *va = aux; 378 vme_chipset_tag_t ct = va->va_vct; 379 vme_am_t mod; 380 int error; 381 382 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 383 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 384 return (0); 385 386 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 387 mod, VME_D16, xyc_probe, 0); 388 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 389 390 return (error == 0); 391 } 392 393 /* 394 * xycattach: attach controller 395 */ 396 void 397 xycattach(device_t parent, device_t self, void *aux) 398 { 399 struct xyc_softc *xyc = device_private(self); 400 struct vme_attach_args *va = aux; 401 vme_chipset_tag_t ct = va->va_vct; 402 bus_space_tag_t bt; 403 bus_space_handle_t bh; 404 vme_intr_handle_t ih; 405 vme_am_t mod; 406 struct xyc_attach_args xa; 407 int lcv, res, error; 408 bus_dma_segment_t seg; 409 int rseg; 410 vme_mapresc_t resc; 411 bus_addr_t busaddr; 412 413 xyc->sc_dev = self; 414 415 /* get addressing and intr level stuff from autoconfig and load it 416 * into our xyc_softc. */ 417 418 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 419 420 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 421 panic("xyc: vme alloc"); 422 423 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 424 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 425 panic("xyc: vme_map"); 426 427 xyc->xyc = (struct xyc *) bh; /* XXX */ 428 xyc->ipl = va->ilevel; 429 xyc->vector = va->ivector; 430 xyc->no_ols = 0; /* XXX should be from config */ 431 432 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 433 xyc->sc_drives[lcv] = NULL; 434 435 /* 436 * allocate and zero buffers 437 * check boundaries of the KVA's ... all IOPBs must reside in 438 * the same 64K region. 439 */ 440 441 /* Get DMA handle for misc. transfers */ 442 if ((error = vme_dmamap_create( 443 ct, /* VME chip tag */ 444 MAXPHYS, /* size */ 445 VME_AM_A24, /* address modifier */ 446 VME_D16, /* data size */ 447 0, /* swap */ 448 1, /* nsegments */ 449 MAXPHYS, /* maxsegsz */ 450 0, /* boundary */ 451 BUS_DMA_NOWAIT, 452 &xyc->auxmap)) != 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 handle for mapping iorq descriptors */ 460 if ((error = vme_dmamap_create( 461 ct, /* VME chip tag */ 462 XYC_MAXIOPB * sizeof(struct xy_iopb), 463 VME_AM_A24, /* address modifier */ 464 VME_D16, /* data size */ 465 0, /* swap */ 466 1, /* nsegments */ 467 XYC_MAXIOPB * sizeof(struct xy_iopb), 468 64*1024, /* boundary */ 469 BUS_DMA_NOWAIT, 470 &xyc->iopmap)) != 0) { 471 472 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 473 error); 474 return; 475 } 476 477 /* Get DMA buffer for iorq descriptors */ 478 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 479 XYC_MAXIOPB * sizeof(struct xy_iopb), 480 (void **)&xyc->iopbase, 481 &busaddr)) != 0) { 482 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 483 error); 484 return; 485 } 486 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 487 488 memset(xyc->iopbase, 0, XYC_MAXIOPB * sizeof(struct xy_iopb)); 489 490 xyc->reqs = (struct xy_iorq *) 491 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 492 M_DEVBUF, M_NOWAIT|M_ZERO); 493 if (xyc->reqs == NULL) 494 panic("xyc malloc"); 495 496 /* 497 * init iorq to iopb pointers, and non-zero fields in the 498 * iopb which never change. 499 */ 500 501 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 502 xyc->xy_chain[lcv] = NULL; 503 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 504 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 505 xyc->iopbase[lcv].asr = 1; /* always the same */ 506 xyc->iopbase[lcv].eef = 1; /* always the same */ 507 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 508 xyc->iopbase[lcv].aud = 1; /* always the same */ 509 xyc->iopbase[lcv].relo = 1; /* always the same */ 510 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 511 512 if ((error = vme_dmamap_create( 513 ct, /* VME chip tag */ 514 MAXPHYS, /* size */ 515 VME_AM_A24, /* address modifier */ 516 VME_D16, /* data size */ 517 0, /* swap */ 518 1, /* nsegments */ 519 MAXPHYS, /* maxsegsz */ 520 0, /* boundary */ 521 BUS_DMA_NOWAIT, 522 &xyc->reqs[lcv].dmamap)) != 0) { 523 524 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 525 error); 526 return; 527 } 528 } 529 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 530 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 531 xyc->xy_hand = 0; 532 533 /* read controller parameters and insure we have a 450/451 */ 534 535 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 536 res = xyc->ciopb->ctyp; 537 XYC_DONE(xyc, error); 538 if (res != XYCT_450) { 539 if (error) 540 printf(": %s: ", xyc_e2str(error)); 541 printf(": doesn't identify as a 450/451\n"); 542 return; 543 } 544 printf(": Xylogics 450/451"); 545 if (xyc->no_ols) 546 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 547 printf("\n"); 548 if (error) { 549 aprint_error_dev(xyc->sc_dev, "error: %s\n", 550 xyc_e2str(error)); 551 return; 552 } 553 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 554 printf("%s: 24 bit addressing turned off\n", 555 device_xname(xyc->sc_dev)); 556 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 557 printf("to enable 24 bit mode and this driver\n"); 558 return; 559 } 560 561 /* link in interrupt with higher level software */ 562 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 563 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 564 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 565 device_xname(xyc->sc_dev), "intr"); 566 567 callout_init(&xyc->sc_tick_ch, 0); 568 569 /* now we must look for disks using autoconfig */ 570 xa.fullmode = XY_SUB_POLL; 571 xa.booting = 1; 572 573 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 574 (void) config_found(self, (void *) &xa, NULL); 575 576 /* start the watchdog clock */ 577 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 578 579 } 580 581 /* 582 * xymatch: probe for disk. 583 * 584 * note: we almost always say disk is present. this allows us to 585 * spin up and configure a disk after the system is booted (we can 586 * call xyattach!). 587 */ 588 int 589 xymatch(device_t parent, cfdata_t cf, void *aux) 590 { 591 struct xyc_attach_args *xa = aux; 592 593 /* looking for autoconf wildcard or exact match */ 594 595 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 596 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 597 return 0; 598 599 return 1; 600 601 } 602 603 /* 604 * xyattach: attach a disk. this can be called from autoconf and also 605 * from xyopen/xystrategy. 606 */ 607 void 608 xyattach(device_t parent, device_t self, void *aux) 609 { 610 struct xy_softc *xy = device_private(self), *oxy; 611 struct xyc_softc *xyc = device_private(parent); 612 struct xyc_attach_args *xa = aux; 613 int spt, mb, blk, lcv, fmode, s = 0, newstate; 614 struct dkbad *dkb; 615 int rseg, error; 616 bus_dma_segment_t seg; 617 bus_addr_t busaddr; 618 void * dmaddr; 619 char * buf; 620 621 xy->sc_dev = self; 622 623 /* 624 * Always re-initialize the disk structure. We want statistics 625 * to start with a clean slate. 626 */ 627 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 628 629 /* if booting, init the xy_softc */ 630 631 if (xa->booting) { 632 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 633 xy->flags = 0; 634 xy->parent = xyc; 635 636 /* init queue of waiting bufs */ 637 638 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 639 640 xy->xyrq = &xyc->reqs[xa->driveno]; 641 642 } 643 xy->xy_drive = xa->driveno; 644 fmode = xa->fullmode; 645 xyc->sc_drives[xa->driveno] = xy; 646 647 /* if not booting, make sure we are the only process in the attach for 648 * this drive. if locked out, sleep on it. */ 649 650 if (!xa->booting) { 651 s = splbio(); 652 while (xy->state == XY_DRIVE_ATTACHING) { 653 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 654 splx(s); 655 return; 656 } 657 } 658 printf("%s at %s", 659 device_xname(xy->sc_dev), device_xname(xy->parent->sc_dev)); 660 } 661 662 /* we now have control */ 663 xy->state = XY_DRIVE_ATTACHING; 664 newstate = XY_DRIVE_UNKNOWN; 665 666 buf = NULL; 667 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 668 XYFM_BPS, 669 (void **)&buf, 670 &busaddr)) != 0) { 671 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 672 error); 673 return; 674 } 675 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 676 677 /* first try and reset the drive */ 678 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 679 XYC_DONE(xyc, error); 680 if (error == XY_ERR_DNRY) { 681 printf(" drive %d: off-line\n", xa->driveno); 682 goto done; 683 } 684 if (error) { 685 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 686 goto done; 687 } 688 printf(" drive %d: ready", xa->driveno); 689 690 /* 691 * now set drive parameters (to semi-bogus values) so we can read the 692 * disk label. 693 */ 694 xy->pcyl = xy->ncyl = 1; 695 xy->acyl = 0; 696 xy->nhead = 1; 697 xy->nsect = 1; 698 xy->sectpercyl = 1; 699 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 700 xy->dkb.bt_bad[lcv].bt_cyl = 701 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 702 703 /* read disk label */ 704 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 705 xy->drive_type++) { 706 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 707 dmaddr, fmode); 708 XYC_DONE(xyc, error); 709 if (error == XY_ERR_AOK) break; 710 } 711 712 if (error != XY_ERR_AOK) { 713 aprint_normal("\n"); 714 aprint_error_dev(xy->sc_dev, "reading disk label failed: %s\n", 715 xyc_e2str(error)); 716 goto done; 717 } 718 printf(" (drive type %d)\n", xy->drive_type); 719 720 newstate = XY_DRIVE_NOLABEL; 721 722 xy->hw_spt = spt = 0; /* XXX needed ? */ 723 /* Attach the disk: must be before getdisklabel to malloc label */ 724 disk_init(&xy->sc_dk, device_xname(xy->sc_dev), &xydkdriver); 725 disk_attach(&xy->sc_dk); 726 727 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 728 goto done; 729 730 /* inform the user of what is up */ 731 printf("%s: <%s>, pcyl %d\n", device_xname(xy->sc_dev), 732 buf, xy->pcyl); 733 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 734 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 735 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 736 XYFM_BPS); 737 738 /* 739 * 450/451 stupidity: the drive type is encoded into the format 740 * of the disk. the drive type in the IOPB must match the drive 741 * type in the format, or you will not be able to do I/O to the 742 * disk (you get header not found errors). if you have two drives 743 * of different sizes that have the same drive type in their 744 * formatting then you are out of luck. 745 * 746 * this problem was corrected in the 753/7053. 747 */ 748 749 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 750 oxy = xyc->sc_drives[lcv]; 751 if (oxy == NULL || oxy == xy) continue; 752 if (oxy->drive_type != xy->drive_type) continue; 753 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 754 xy->nhead != oxy->nhead) { 755 printf("%s: %s and %s must be the same size!\n", 756 device_xname(xyc->sc_dev), device_xname(xy->sc_dev), 757 device_xname(oxy->sc_dev)); 758 panic("xy drive size mismatch"); 759 } 760 } 761 762 763 /* now set the real drive parameters! */ 764 765 blk = (xy->nsect - 1) + 766 ((xy->nhead - 1) * xy->nsect) + 767 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 768 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 769 XYC_DONE(xyc, error); 770 if (error) { 771 aprint_error_dev(xy->sc_dev, "write drive size failed: %s\n", 772 xyc_e2str(error)); 773 goto done; 774 } 775 newstate = XY_DRIVE_ONLINE; 776 777 /* 778 * read bad144 table. this table resides on the first sector of the 779 * last track of the disk (i.e. second cyl of "acyl" area). 780 */ 781 782 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 783 /* last cyl */ 784 (xy->nhead - 1) * xy->nsect; /* last head */ 785 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 786 dmaddr, fmode); 787 XYC_DONE(xyc, error); 788 if (error) { 789 aprint_error_dev(xy->sc_dev, "reading bad144 failed: %s\n", 790 xyc_e2str(error)); 791 goto done; 792 } 793 794 /* check dkbad for sanity */ 795 dkb = (struct dkbad *) buf; 796 for (lcv = 0; lcv < 126; lcv++) { 797 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 798 dkb->bt_bad[lcv].bt_cyl == 0) && 799 dkb->bt_bad[lcv].bt_trksec == 0xffff) 800 continue; /* blank */ 801 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 802 break; 803 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 804 break; 805 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 806 break; 807 } 808 if (lcv != 126) { 809 aprint_error_dev(xy->sc_dev, "warning: invalid bad144 sector!\n"); 810 } else { 811 memcpy(&xy->dkb, buf, XYFM_BPS); 812 } 813 814 done: 815 if (buf != NULL) { 816 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 817 &seg, rseg, XYFM_BPS, buf); 818 } 819 820 xy->state = newstate; 821 if (!xa->booting) { 822 wakeup(&xy->state); 823 splx(s); 824 } 825 } 826 827 /* 828 * end of autoconfig functions 829 */ 830 831 /* 832 * { b , c } d e v s w f u n c t i o n s 833 */ 834 835 /* 836 * xyclose: close device 837 */ 838 int 839 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 840 { 841 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 842 int part = DISKPART(dev); 843 844 /* clear mask bits */ 845 846 switch (fmt) { 847 case S_IFCHR: 848 xy->sc_dk.dk_copenmask &= ~(1 << part); 849 break; 850 case S_IFBLK: 851 xy->sc_dk.dk_bopenmask &= ~(1 << part); 852 break; 853 } 854 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 855 856 return 0; 857 } 858 859 /* 860 * xydump: crash dump system 861 */ 862 int 863 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 864 { 865 int unit, part; 866 struct xy_softc *xy; 867 868 unit = DISKUNIT(dev); 869 part = DISKPART(dev); 870 871 xy = device_lookup_private(&xy_cd, unit); 872 if (!xy) 873 return ENXIO; 874 875 printf("%s%c: crash dump not supported (yet)\n", device_xname(xy->sc_dev), 876 'a' + part); 877 878 return ENXIO; 879 880 /* outline: globals: "dumplo" == sector number of partition to start 881 * dump at (convert to physical sector with partition table) 882 * "dumpsize" == size of dump in clicks "physmem" == size of physical 883 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 884 * physmem) 885 * 886 * dump a copy of physical memory to the dump device starting at sector 887 * "dumplo" in the swap partition (make sure > 0). map in pages as 888 * we go. use polled I/O. 889 * 890 * XXX how to handle NON_CONTIG? */ 891 892 } 893 894 static enum kauth_device_req 895 xy_getkauthreq(u_char cmd) 896 { 897 enum kauth_device_req req; 898 899 switch (cmd) { 900 case XYCMD_WR: 901 case XYCMD_WTH: 902 case XYCMD_WFM: 903 case XYCMD_WRH: 904 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 905 break; 906 907 case XYCMD_RD: 908 case XYCMD_RTH: 909 case XYCMD_RDH: 910 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 911 break; 912 913 case XYCMD_RDS: 914 case XYCMD_MBD: 915 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 916 break; 917 918 case XYCMD_RST: 919 case XYCMD_SDS: 920 case XYCMD_MBL: 921 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 922 break; 923 924 case XYCMD_NOP: 925 case XYCMD_SK: 926 case XYCMD_ST: 927 case XYCMD_R: 928 default: 929 req = 0; 930 break; 931 } 932 933 return (req); 934 } 935 936 /* 937 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 938 */ 939 int 940 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 941 { 942 struct xy_softc *xy; 943 struct xd_iocmd *xio; 944 int error, s, unit; 945 #ifdef __HAVE_OLD_DISKLABEL 946 struct disklabel newlabel; 947 #endif 948 struct disklabel *lp; 949 950 unit = DISKUNIT(dev); 951 952 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 953 return (ENXIO); 954 955 /* switch on ioctl type */ 956 957 switch (command) { 958 case DIOCSBAD: /* set bad144 info */ 959 if ((flag & FWRITE) == 0) 960 return EBADF; 961 s = splbio(); 962 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 963 splx(s); 964 return 0; 965 966 case DIOCGDINFO: /* get disk label */ 967 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 968 return 0; 969 #ifdef __HAVE_OLD_DISKLABEL 970 case ODIOCGDINFO: 971 newlabel = *(xy->sc_dk.dk_label); 972 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 973 return ENOTTY; 974 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 975 return 0; 976 #endif 977 978 case DIOCGPART: /* get partition info */ 979 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 980 ((struct partinfo *) addr)->part = 981 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 982 return 0; 983 984 case DIOCSDINFO: /* set disk label */ 985 #ifdef __HAVE_OLD_DISKLABEL 986 case ODIOCSDINFO: 987 if (command == ODIOCSDINFO) { 988 memset(&newlabel, 0, sizeof newlabel); 989 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 990 lp = &newlabel; 991 } else 992 #endif 993 lp = (struct disklabel *)addr; 994 995 if ((flag & FWRITE) == 0) 996 return EBADF; 997 error = setdisklabel(xy->sc_dk.dk_label, 998 lp, /* xy->sc_dk.dk_openmask : */ 0, 999 xy->sc_dk.dk_cpulabel); 1000 if (error == 0) { 1001 if (xy->state == XY_DRIVE_NOLABEL) 1002 xy->state = XY_DRIVE_ONLINE; 1003 } 1004 return error; 1005 1006 case DIOCWLABEL: /* change write status of disk label */ 1007 if ((flag & FWRITE) == 0) 1008 return EBADF; 1009 if (*(int *) addr) 1010 xy->flags |= XY_WLABEL; 1011 else 1012 xy->flags &= ~XY_WLABEL; 1013 return 0; 1014 1015 case DIOCWDINFO: /* write disk label */ 1016 #ifdef __HAVE_OLD_DISKLABEL 1017 case ODIOCWDINFO: 1018 if (command == ODIOCWDINFO) { 1019 memset(&newlabel, 0, sizeof newlabel); 1020 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1021 lp = &newlabel; 1022 } else 1023 #endif 1024 lp = (struct disklabel *)addr; 1025 1026 if ((flag & FWRITE) == 0) 1027 return EBADF; 1028 error = setdisklabel(xy->sc_dk.dk_label, 1029 lp, /* xy->sc_dk.dk_openmask : */ 0, 1030 xy->sc_dk.dk_cpulabel); 1031 if (error == 0) { 1032 if (xy->state == XY_DRIVE_NOLABEL) 1033 xy->state = XY_DRIVE_ONLINE; 1034 1035 /* Simulate opening partition 0 so write succeeds. */ 1036 xy->sc_dk.dk_openmask |= (1 << 0); 1037 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1038 xystrategy, xy->sc_dk.dk_label, 1039 xy->sc_dk.dk_cpulabel); 1040 xy->sc_dk.dk_openmask = 1041 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1042 } 1043 return error; 1044 1045 case DIOSXDCMD: { 1046 enum kauth_device_req req; 1047 1048 xio = (struct xd_iocmd *) addr; 1049 req = xy_getkauthreq(xio->cmd); 1050 if ((error = kauth_authorize_device_passthru(l->l_cred, 1051 dev, req, xio)) != 0) 1052 return (error); 1053 return (xyc_ioctlcmd(xy, dev, xio)); 1054 } 1055 1056 default: 1057 return ENOTTY; 1058 } 1059 } 1060 1061 /* 1062 * xyopen: open drive 1063 */ 1064 1065 int 1066 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1067 { 1068 int unit, part; 1069 struct xy_softc *xy; 1070 struct xyc_attach_args xa; 1071 1072 /* first, could it be a valid target? */ 1073 1074 unit = DISKUNIT(dev); 1075 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1076 return (ENXIO); 1077 part = DISKPART(dev); 1078 1079 /* do we need to attach the drive? */ 1080 1081 if (xy->state == XY_DRIVE_UNKNOWN) { 1082 xa.driveno = xy->xy_drive; 1083 xa.fullmode = XY_SUB_WAIT; 1084 xa.booting = 0; 1085 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1086 if (xy->state == XY_DRIVE_UNKNOWN) { 1087 return (EIO); 1088 } 1089 } 1090 /* check for partition */ 1091 1092 if (part != RAW_PART && 1093 (part >= xy->sc_dk.dk_label->d_npartitions || 1094 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1095 return (ENXIO); 1096 } 1097 /* set open masks */ 1098 1099 switch (fmt) { 1100 case S_IFCHR: 1101 xy->sc_dk.dk_copenmask |= (1 << part); 1102 break; 1103 case S_IFBLK: 1104 xy->sc_dk.dk_bopenmask |= (1 << part); 1105 break; 1106 } 1107 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1108 1109 return 0; 1110 } 1111 1112 int 1113 xyread(dev_t dev, struct uio *uio, int flags) 1114 { 1115 1116 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1117 } 1118 1119 int 1120 xywrite(dev_t dev, struct uio *uio, int flags) 1121 { 1122 1123 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1124 } 1125 1126 1127 /* 1128 * xysize: return size of a partition for a dump 1129 */ 1130 1131 int 1132 xysize(dev_t dev) 1133 { 1134 struct xy_softc *xysc; 1135 int unit, part, size, omask; 1136 1137 /* valid unit? */ 1138 unit = DISKUNIT(dev); 1139 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1140 return (-1); 1141 1142 part = DISKPART(dev); 1143 omask = xysc->sc_dk.dk_openmask & (1 << part); 1144 1145 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1146 return (-1); 1147 1148 /* do it */ 1149 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1150 size = -1; /* only give valid size for swap partitions */ 1151 else 1152 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1153 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1154 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1155 return (-1); 1156 return (size); 1157 } 1158 1159 /* 1160 * xystrategy: buffering system interface to xy. 1161 */ 1162 1163 void 1164 xystrategy(struct buf *bp) 1165 { 1166 struct xy_softc *xy; 1167 int s, unit; 1168 struct xyc_attach_args xa; 1169 struct disklabel *lp; 1170 daddr_t blkno; 1171 1172 unit = DISKUNIT(bp->b_dev); 1173 1174 /* check for live device */ 1175 1176 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1177 bp->b_blkno < 0 || 1178 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1179 bp->b_error = EINVAL; 1180 goto done; 1181 } 1182 /* do we need to attach the drive? */ 1183 1184 if (xy->state == XY_DRIVE_UNKNOWN) { 1185 xa.driveno = xy->xy_drive; 1186 xa.fullmode = XY_SUB_WAIT; 1187 xa.booting = 0; 1188 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1189 if (xy->state == XY_DRIVE_UNKNOWN) { 1190 bp->b_error = EIO; 1191 goto done; 1192 } 1193 } 1194 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1195 /* no I/O to unlabeled disks, unless raw partition */ 1196 bp->b_error = EIO; 1197 goto done; 1198 } 1199 /* short circuit zero length request */ 1200 1201 if (bp->b_bcount == 0) 1202 goto done; 1203 1204 /* check bounds with label (disksubr.c). Determine the size of the 1205 * transfer, and make sure it is within the boundaries of the 1206 * partition. Adjust transfer if needed, and signal errors or early 1207 * completion. */ 1208 1209 lp = xy->sc_dk.dk_label; 1210 1211 if (bounds_check_with_label(&xy->sc_dk, bp, 1212 (xy->flags & XY_WLABEL) != 0) <= 0) 1213 goto done; 1214 1215 /* 1216 * Now convert the block number to absolute and put it in 1217 * terms of the device's logical block size. 1218 */ 1219 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1220 if (DISKPART(bp->b_dev) != RAW_PART) 1221 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1222 1223 bp->b_rawblkno = blkno; 1224 1225 /* 1226 * now we know we have a valid buf structure that we need to do I/O 1227 * on. 1228 */ 1229 s = splbio(); /* protect the queues */ 1230 1231 bufq_put(xy->xyq, bp); 1232 1233 /* start 'em up */ 1234 1235 xyc_start(xy->parent, NULL); 1236 1237 /* done! */ 1238 1239 splx(s); 1240 return; 1241 1242 done: /* tells upper layers we are done with this 1243 * buf */ 1244 bp->b_resid = bp->b_bcount; 1245 biodone(bp); 1246 } 1247 /* 1248 * end of {b,c}devsw functions 1249 */ 1250 1251 /* 1252 * i n t e r r u p t f u n c t i o n 1253 * 1254 * xycintr: hardware interrupt. 1255 */ 1256 int 1257 xycintr(void *v) 1258 { 1259 struct xyc_softc *xycsc = v; 1260 1261 /* kick the event counter */ 1262 1263 xycsc->sc_intrcnt.ev_count++; 1264 1265 /* remove as many done IOPBs as possible */ 1266 1267 xyc_remove_iorq(xycsc); 1268 1269 /* start any iorq's already waiting */ 1270 1271 xyc_start(xycsc, NULL); 1272 1273 return (1); 1274 } 1275 /* 1276 * end of interrupt function 1277 */ 1278 1279 /* 1280 * i n t e r n a l f u n c t i o n s 1281 */ 1282 1283 /* 1284 * xyc_rqinit: fill out the fields of an I/O request 1285 */ 1286 1287 inline void 1288 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) 1289 { 1290 rq->xyc = xyc; 1291 rq->xy = xy; 1292 rq->ttl = XYC_MAXTTL + 10; 1293 rq->mode = md; 1294 rq->tries = rq->errnum = rq->lasterror = 0; 1295 rq->blockno = blk; 1296 rq->sectcnt = cnt; 1297 rq->dbuf = db; 1298 rq->buf = bp; 1299 } 1300 1301 /* 1302 * xyc_rqtopb: load up an IOPB based on an iorq 1303 */ 1304 1305 void 1306 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1307 { 1308 u_long block, dp; 1309 1310 /* normal IOPB case, standard stuff */ 1311 1312 /* chain bit handled later */ 1313 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1314 iopb->com = cmd; 1315 iopb->errnum = 0; 1316 iopb->errs = 0; 1317 iopb->done = 0; 1318 if (iorq->xy) { 1319 iopb->unit = iorq->xy->xy_drive; 1320 iopb->dt = iorq->xy->drive_type; 1321 } else { 1322 iopb->unit = 0; 1323 iopb->dt = 0; 1324 } 1325 block = iorq->blockno; 1326 if (iorq->xy == NULL || block == 0) { 1327 iopb->sect = iopb->head = iopb->cyl = 0; 1328 } else { 1329 iopb->sect = block % iorq->xy->nsect; 1330 block = block / iorq->xy->nsect; 1331 iopb->head = block % iorq->xy->nhead; 1332 block = block / iorq->xy->nhead; 1333 iopb->cyl = block; 1334 } 1335 iopb->scnt = iorq->sectcnt; 1336 dp = (u_long) iorq->dbuf; 1337 if (iorq->dbuf == NULL) { 1338 iopb->dataa = 0; 1339 iopb->datar = 0; 1340 } else { 1341 iopb->dataa = (dp & 0xffff); 1342 iopb->datar = ((dp & 0xff0000) >> 16); 1343 } 1344 iopb->subfn = subfun; 1345 } 1346 1347 1348 /* 1349 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1350 */ 1351 1352 int 1353 xyc_unbusy(struct xyc *xyc, int del) 1354 { 1355 while (del-- > 0) { 1356 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1357 break; 1358 DELAY(1); 1359 } 1360 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1361 } 1362 1363 /* 1364 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1365 * note that NORM requests are handled separately. 1366 */ 1367 int 1368 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1369 int scnt, char *dptr, int fullmode) 1370 { 1371 int submode = XY_STATE(fullmode); 1372 struct xy_iorq *iorq = xycsc->ciorq; 1373 struct xy_iopb *iopb = xycsc->ciopb; 1374 1375 /* 1376 * is someone else using the control iopq wait for it if we can 1377 */ 1378 start: 1379 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1380 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1381 return(XY_ERR_FAIL); 1382 goto start; 1383 } 1384 1385 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1386 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1387 iorq->mode = XY_SUB_FREE; 1388 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1389 } 1390 1391 /* init iorq/iopb */ 1392 1393 xyc_rqinit(iorq, xycsc, 1394 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1395 fullmode, block, scnt, dptr, NULL); 1396 1397 /* load IOPB from iorq */ 1398 1399 xyc_rqtopb(iorq, iopb, cmd, subfn); 1400 1401 /* submit it for processing */ 1402 1403 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1404 1405 return(XY_ERR_AOK); 1406 } 1407 1408 /* 1409 * xyc_startbuf 1410 * start a buffer for running 1411 */ 1412 1413 int 1414 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1415 { 1416 #ifdef XYC_DEBUG 1417 int partno; 1418 #endif 1419 int error; 1420 struct xy_iorq *iorq; 1421 struct xy_iopb *iopb; 1422 u_long block; 1423 1424 iorq = xysc->xyrq; 1425 iopb = iorq->iopb; 1426 1427 /* get buf */ 1428 1429 if (bp == NULL) 1430 panic("xyc_startbuf null buf"); 1431 1432 #ifdef XYC_DEBUG 1433 partno = DISKPART(bp->b_dev); 1434 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1435 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1436 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1437 bp->b_bcount, bp->b_data); 1438 #endif 1439 1440 /* 1441 * load request. 1442 * 1443 * note that iorq points to the buffer as mapped into DVMA space, 1444 * where as the bp->b_data points to its non-DVMA mapping. 1445 */ 1446 1447 block = bp->b_rawblkno; 1448 1449 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1450 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1451 if (error != 0) { 1452 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1453 return (XY_ERR_FAIL); /* XXX: need some sort of 1454 * call-back scheme here? */ 1455 } 1456 1457 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1458 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1459 ? BUS_DMASYNC_PREREAD 1460 : BUS_DMASYNC_PREWRITE); 1461 1462 /* init iorq and load iopb from it */ 1463 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1464 bp->b_bcount / XYFM_BPS, 1465 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1466 bp); 1467 1468 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1469 1470 /* Instrumentation. */ 1471 disk_busy(&xysc->sc_dk); 1472 1473 return (XY_ERR_AOK); 1474 } 1475 1476 1477 /* 1478 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1479 * if ok. if it fail returns an error code. type is XY_SUB_*. 1480 * 1481 * note: caller frees iorq in all cases except NORM 1482 * 1483 * return value: 1484 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1485 * WAIT: XY_AOK (success), <error-code> (failed) 1486 * POLL: <same as WAIT> 1487 * NOQ : <same as NORM> 1488 * 1489 * there are three sources for i/o requests: 1490 * [1] xystrategy: normal block I/O, using "struct buf" system. 1491 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1492 * [3] open/ioctl: these are I/O requests done in the context of a process, 1493 * and the process should block until they are done. 1494 * 1495 * software state is stored in the iorq structure. each iorq has an 1496 * iopb structure. the hardware understands the iopb structure. 1497 * every command must go through an iopb. a 450 handles one iopb at a 1498 * time, where as a 451 can take them in chains. [the 450 claims it 1499 * can handle chains, but is appears to be buggy...] iopb are allocated 1500 * in DVMA space at boot up time. each disk gets one iopb, and the 1501 * controller gets one (for POLL and WAIT commands). what happens if 1502 * the iopb is busy? for i/o type [1], the buffers are queued at the 1503 * "buff" layer and * picked up later by the interrupt routine. for case 1504 * [2] we can only be blocked if there is a WAIT type I/O request being 1505 * run. since this can only happen when we are crashing, we wait a sec 1506 * and then steal the IOPB. for case [3] the process can sleep 1507 * on the iorq free list until some iopbs are available. 1508 */ 1509 1510 1511 int 1512 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1513 { 1514 struct xy_iopb *dmaiopb; 1515 1516 #ifdef XYC_DEBUG 1517 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1518 device_xname(xycsc->sc_dev), iorq, type); 1519 #endif 1520 1521 /* first check and see if controller is busy */ 1522 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1523 #ifdef XYC_DEBUG 1524 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1525 #endif 1526 if (type == XY_SUB_NOQ) 1527 return (XY_ERR_FAIL); /* failed */ 1528 switch (type) { 1529 case XY_SUB_NORM: 1530 return XY_ERR_AOK; /* success */ 1531 case XY_SUB_WAIT: 1532 while (iorq->iopb->done == 0) { 1533 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1534 } 1535 return (iorq->errnum); 1536 case XY_SUB_POLL: /* steal controller */ 1537 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1538 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1539 panic("xyc_submit_iorq: stuck xyc"); 1540 printf("%s: stole controller\n", 1541 device_xname(xycsc->sc_dev)); 1542 break; 1543 default: 1544 panic("xyc_submit_iorq adding"); 1545 } 1546 } 1547 1548 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1549 if (dmaiopb == NULL) { /* nothing doing? */ 1550 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1551 return(XY_ERR_AOK); 1552 panic("xyc_submit_iorq: xyc_chain failed!"); 1553 } 1554 1555 XYC_GO(xycsc->xyc, dmaiopb); 1556 1557 /* command now running, wrap it up */ 1558 switch (type) { 1559 case XY_SUB_NORM: 1560 case XY_SUB_NOQ: 1561 return (XY_ERR_AOK); /* success */ 1562 case XY_SUB_WAIT: 1563 while (iorq->iopb->done == 0) { 1564 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1565 } 1566 return (iorq->errnum); 1567 case XY_SUB_POLL: 1568 return (xyc_piodriver(xycsc, iorq)); 1569 default: 1570 panic("xyc_submit_iorq wrap up"); 1571 } 1572 panic("xyc_submit_iorq"); 1573 return 0; /* not reached */ 1574 } 1575 1576 1577 /* 1578 * xyc_chain: build a chain. return dvma address of first element in 1579 * the chain. iorq != NULL: means we only want that item on the chain. 1580 */ 1581 1582 struct xy_iopb * 1583 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1584 { 1585 int togo, chain, hand; 1586 1587 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1588 1589 /* 1590 * promote control IOPB to the top 1591 */ 1592 if (iorq == NULL) { 1593 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1594 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1595 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1596 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1597 } 1598 1599 /* 1600 * special case: if iorq != NULL then we have a POLL or WAIT request. 1601 * we let these take priority and do them first. 1602 */ 1603 if (iorq) { 1604 xycsc->xy_chain[0] = iorq; 1605 iorq->iopb->chen = 0; 1606 return(iorq->dmaiopb); 1607 } 1608 1609 /* 1610 * NORM case: do round robin and maybe chain (if allowed and possible) 1611 */ 1612 chain = 0; 1613 hand = xycsc->xy_hand; 1614 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1615 1616 for (togo = XYC_MAXIOPB; togo > 0; 1617 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1618 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1619 1620 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1621 xycsc->iopbase[hand].done) 1622 continue; /* not ready-for-i/o */ 1623 1624 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1625 iopb = xycsc->xy_chain[chain]->iopb; 1626 iopb->chen = 0; 1627 if (chain != 0) { 1628 /* adding a link to a chain */ 1629 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1630 prev_iopb->chen = 1; 1631 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1632 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1633 } else { 1634 /* head of chain */ 1635 iorq = xycsc->xy_chain[chain]; 1636 } 1637 chain++; 1638 1639 /* quit if chaining dis-allowed */ 1640 if (xycsc->no_ols) 1641 break; 1642 } 1643 1644 return(iorq ? iorq->dmaiopb : NULL); 1645 } 1646 1647 /* 1648 * xyc_piodriver 1649 * 1650 * programmed i/o driver. this function takes over the computer 1651 * and drains off the polled i/o request. it returns the status of the iorq 1652 * the caller is interesting in. 1653 */ 1654 int 1655 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1656 { 1657 int nreset = 0; 1658 int retval = 0; 1659 u_long res; 1660 #ifdef XYC_DEBUG 1661 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1662 #endif 1663 1664 while (iorq->iopb->done == 0) { 1665 1666 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1667 1668 /* we expect some progress soon */ 1669 if (res == XY_ERR_FAIL && nreset >= 2) { 1670 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1671 #ifdef XYC_DEBUG 1672 printf("xyc_piodriver: timeout\n"); 1673 #endif 1674 return (XY_ERR_FAIL); 1675 } 1676 if (res == XY_ERR_FAIL) { 1677 if (xyc_reset(xycsc, 0, 1678 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1679 XY_ERR_FAIL, 1680 0) == XY_ERR_FAIL) 1681 return (XY_ERR_FAIL); /* flushes all but POLL 1682 * requests, resets */ 1683 continue; 1684 } 1685 1686 xyc_remove_iorq(xycsc); /* may resubmit request */ 1687 1688 if (iorq->iopb->done == 0) 1689 xyc_start(xycsc, iorq); 1690 } 1691 1692 /* get return value */ 1693 1694 retval = iorq->errnum; 1695 1696 #ifdef XYC_DEBUG 1697 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1698 iorq->errnum, xyc_e2str(iorq->errnum)); 1699 #endif 1700 1701 /* start up any bufs that have queued */ 1702 1703 xyc_start(xycsc, NULL); 1704 1705 return (retval); 1706 } 1707 1708 /* 1709 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1710 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1711 */ 1712 void 1713 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1714 { 1715 struct xy_iopb tmpiopb; 1716 struct xy_iopb *iopb; 1717 int del; 1718 1719 iopb = xycsc->ciopb; 1720 1721 /* Save contents */ 1722 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1723 1724 iopb->chen = iopb->done = iopb->errs = 0; 1725 iopb->ien = 0; 1726 iopb->com = XYCMD_RST; 1727 iopb->unit = xysc->xy_drive; 1728 1729 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1730 1731 del = XYC_RESETUSEC; 1732 while (del > 0) { 1733 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1734 break; 1735 DELAY(1); 1736 del--; 1737 } 1738 1739 if (del <= 0 || iopb->errs) { 1740 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1741 xyc_e2str(iopb->errnum)); 1742 del = xycsc->xyc->xyc_rsetup; 1743 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1744 panic("xyc_reset"); 1745 } else { 1746 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1747 } 1748 1749 /* Restore contents */ 1750 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1751 } 1752 1753 1754 /* 1755 * xyc_reset: reset everything: requests are marked as errors except 1756 * a polled request (which is resubmitted) 1757 */ 1758 int 1759 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1760 int error, struct xy_softc *xysc) 1761 { 1762 int del = 0, lcv, retval = XY_ERR_AOK; 1763 1764 /* soft reset hardware */ 1765 1766 if (!quiet) 1767 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1768 del = xycsc->xyc->xyc_rsetup; 1769 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1770 if (del == XY_ERR_FAIL) { 1771 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1772 retval = XY_ERR_FAIL; 1773 } 1774 if (xysc) 1775 xyc_xyreset(xycsc, xysc); 1776 1777 /* fix queues based on "blast-mode" */ 1778 1779 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1780 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1781 1782 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1783 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1784 XY_STATE(iorq->mode) != XY_SUB_NORM) 1785 /* is it active? */ 1786 continue; 1787 1788 if (blastmode == XY_RSET_ALL || 1789 blastmode != iorq) { 1790 /* failed */ 1791 iorq->errnum = error; 1792 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1793 switch (XY_STATE(iorq->mode)) { 1794 case XY_SUB_NORM: 1795 iorq->buf->b_error = EIO; 1796 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1797 1798 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1799 iorq->dmamap->dm_mapsize, 1800 (iorq->buf->b_flags & B_READ) 1801 ? BUS_DMASYNC_POSTREAD 1802 : BUS_DMASYNC_POSTWRITE); 1803 1804 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1805 1806 (void)bufq_get(iorq->xy->xyq); 1807 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1808 (xycsc->reqs[lcv].buf->b_bcount - 1809 xycsc->reqs[lcv].buf->b_resid), 1810 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1811 biodone(iorq->buf); 1812 iorq->mode = XY_SUB_FREE; 1813 break; 1814 case XY_SUB_WAIT: 1815 wakeup(iorq); 1816 case XY_SUB_POLL: 1817 iorq->mode = 1818 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1819 break; 1820 } 1821 1822 } else { 1823 1824 /* resubmit, no need to do anything here */ 1825 } 1826 } 1827 1828 /* 1829 * now, if stuff is waiting, start it. 1830 * since we just reset it should go 1831 */ 1832 xyc_start(xycsc, NULL); 1833 1834 return (retval); 1835 } 1836 1837 /* 1838 * xyc_start: start waiting buffers 1839 */ 1840 1841 void 1842 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1843 { 1844 int lcv; 1845 struct xy_softc *xy; 1846 1847 if (iorq == NULL) { 1848 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1849 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1850 if (bufq_peek(xy->xyq) == NULL) continue; 1851 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1852 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1853 } 1854 } 1855 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1856 } 1857 1858 /* 1859 * xyc_remove_iorq: remove "done" IOPB's. 1860 */ 1861 1862 int 1863 xyc_remove_iorq(struct xyc_softc *xycsc) 1864 { 1865 int errnum, rq, comm, errs; 1866 struct xyc *xyc = xycsc->xyc; 1867 u_long addr; 1868 struct xy_iopb *iopb; 1869 struct xy_iorq *iorq; 1870 struct buf *bp; 1871 1872 if (xyc->xyc_csr & XYC_DERR) { 1873 /* 1874 * DOUBLE ERROR: should never happen under normal use. This 1875 * error is so bad, you can't even tell which IOPB is bad, so 1876 * we dump them all. 1877 */ 1878 errnum = XY_ERR_DERR; 1879 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1880 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1881 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1882 panic("xyc_remove_iorq: controller DEAD"); 1883 } 1884 return (XY_ERR_AOK); 1885 } 1886 1887 /* 1888 * get iopb that is done, loop down the chain 1889 */ 1890 1891 if (xyc->xyc_csr & XYC_ERR) { 1892 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1893 } 1894 if (xyc->xyc_csr & XYC_IPND) { 1895 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1896 } 1897 1898 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1899 iorq = xycsc->xy_chain[rq]; 1900 if (iorq == NULL) break; /* done ! */ 1901 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1902 continue; /* free, or done */ 1903 iopb = iorq->iopb; 1904 if (iopb->done == 0) 1905 continue; /* not done yet */ 1906 1907 comm = iopb->com; 1908 errs = iopb->errs; 1909 1910 if (errs) 1911 iorq->errnum = iopb->errnum; 1912 else 1913 iorq->errnum = 0; 1914 1915 /* handle non-fatal errors */ 1916 1917 if (errs && 1918 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1919 continue; /* AOK: we resubmitted it */ 1920 1921 1922 /* this iorq is now done (hasn't been restarted or anything) */ 1923 1924 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1925 xyc_perror(iorq, iopb, 0); 1926 1927 /* now, if read/write check to make sure we got all the data 1928 * we needed. (this may not be the case if we got an error in 1929 * the middle of a multisector request). */ 1930 1931 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1932 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1933 /* we just successfully processed a bad144 sector 1934 * note: if we are in bad 144 mode, the pointers have 1935 * been advanced already (see above) and are pointing 1936 * at the bad144 sector. to exit bad144 mode, we 1937 * must advance the pointers 1 sector and issue a new 1938 * request if there are still sectors left to process 1939 * 1940 */ 1941 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1942 1943 /* exit b144 mode */ 1944 iorq->mode = iorq->mode & (~XY_MODE_B144); 1945 1946 if (iorq->sectcnt) { /* more to go! */ 1947 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1948 iopb->errs = iopb->done = 0; 1949 iorq->tries = 0; 1950 iopb->scnt = iorq->sectcnt; 1951 iopb->cyl = iorq->blockno / 1952 iorq->xy->sectpercyl; 1953 iopb->head = 1954 (iorq->blockno / iorq->xy->nhead) % 1955 iorq->xy->nhead; 1956 iopb->sect = iorq->blockno % XYFM_BPS; 1957 addr = (u_long) iorq->dbuf; 1958 iopb->dataa = (addr & 0xffff); 1959 iopb->datar = ((addr & 0xff0000) >> 16); 1960 /* will resubit at end */ 1961 continue; 1962 } 1963 } 1964 /* final cleanup, totally done with this request */ 1965 1966 switch (XY_STATE(iorq->mode)) { 1967 case XY_SUB_NORM: 1968 bp = iorq->buf; 1969 if (errs) { 1970 bp->b_error = EIO; 1971 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1972 } else { 1973 bp->b_resid = 0; /* done */ 1974 } 1975 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1976 iorq->dmamap->dm_mapsize, 1977 (iorq->buf->b_flags & B_READ) 1978 ? BUS_DMASYNC_POSTREAD 1979 : BUS_DMASYNC_POSTWRITE); 1980 1981 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1982 1983 (void)bufq_get(iorq->xy->xyq); 1984 disk_unbusy(&iorq->xy->sc_dk, 1985 (bp->b_bcount - bp->b_resid), 1986 (bp->b_flags & B_READ)); 1987 iorq->mode = XY_SUB_FREE; 1988 biodone(bp); 1989 break; 1990 case XY_SUB_WAIT: 1991 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1992 wakeup(iorq); 1993 break; 1994 case XY_SUB_POLL: 1995 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1996 break; 1997 } 1998 } 1999 2000 return (XY_ERR_AOK); 2001 } 2002 2003 /* 2004 * xyc_perror: print error. 2005 * - if still_trying is true: we got an error, retried and got a 2006 * different error. in that case lasterror is the old error, 2007 * and errnum is the new one. 2008 * - if still_trying is not true, then if we ever had an error it 2009 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2010 * from that error (otherwise iorq->errnum == iorq->lasterror). 2011 */ 2012 void 2013 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 2014 { 2015 2016 int error = iorq->lasterror; 2017 2018 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2019 : device_xname(iorq->xyc->sc_dev)); 2020 if (iorq->buf) 2021 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2022 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2023 printf("%s %d/%d/%d: ", 2024 (iopb->com == XYCMD_RD) ? "read" : "write", 2025 iopb->cyl, iopb->head, iopb->sect); 2026 printf("%s", xyc_e2str(error)); 2027 2028 if (still_trying) 2029 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2030 else 2031 if (iorq->errnum == 0) 2032 printf(" [recovered in %d tries]", iorq->tries); 2033 2034 printf("\n"); 2035 } 2036 2037 /* 2038 * xyc_error: non-fatal error encountered... recover. 2039 * return AOK if resubmitted, return FAIL if this iopb is done 2040 */ 2041 int 2042 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2043 int comm) 2044 { 2045 int errnum = iorq->errnum; 2046 int erract = xyc_entoact(errnum); 2047 int oldmode, advance; 2048 #ifdef __sparc__ 2049 int i; 2050 #endif 2051 2052 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2053 oldmode = iorq->mode; 2054 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2055 /* make xyc_start ignore us */ 2056 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2057 iorq->mode = oldmode; 2058 } 2059 /* check for read/write to a sector in bad144 table if bad: redirect 2060 * request to bad144 area */ 2061 2062 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2063 (iorq->mode & XY_MODE_B144) == 0) { 2064 advance = iorq->sectcnt - iopb->scnt; 2065 XYC_ADVANCE(iorq, advance); 2066 #ifdef __sparc__ 2067 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2068 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2069 iorq->blockno % iorq->xy->nsect)) != -1) { 2070 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2071 * redirect */ 2072 iopb->errnum = iopb->done = iopb->errs = 0; 2073 iopb->scnt = 1; 2074 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2075 /* second to last acyl */ 2076 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2077 * standard */ 2078 iopb->head = i / iorq->xy->nhead; 2079 iopb->sect = i % iorq->xy->nhead; 2080 /* will resubmit when we come out of remove_iorq */ 2081 return (XY_ERR_AOK); /* recovered! */ 2082 } 2083 #endif 2084 } 2085 2086 /* 2087 * it isn't a bad144 sector, must be real error! see if we can retry 2088 * it? 2089 */ 2090 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2091 xyc_perror(iorq, iopb, 1); /* inform of error state 2092 * change */ 2093 iorq->lasterror = errnum; 2094 2095 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2096 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2097 iorq->tries++; 2098 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2099 /* will resubmit at end of remove_iorq */ 2100 return (XY_ERR_AOK); /* recovered! */ 2101 } 2102 2103 /* failed to recover from this error */ 2104 return (XY_ERR_FAIL); 2105 } 2106 2107 /* 2108 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2109 */ 2110 void 2111 xyc_tick(void *arg) 2112 { 2113 struct xyc_softc *xycsc = arg; 2114 int lcv, s, reset = 0; 2115 2116 /* reduce ttl for each request if one goes to zero, reset xyc */ 2117 s = splbio(); 2118 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2119 if (xycsc->reqs[lcv].mode == 0 || 2120 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2121 continue; 2122 xycsc->reqs[lcv].ttl--; 2123 if (xycsc->reqs[lcv].ttl == 0) 2124 reset = 1; 2125 } 2126 if (reset) { 2127 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2128 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2129 } 2130 splx(s); 2131 2132 /* until next time */ 2133 2134 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2135 } 2136 2137 /* 2138 * xyc_ioctlcmd: this function provides a user level interface to the 2139 * controller via ioctl. this allows "format" programs to be written 2140 * in user code, and is also useful for some debugging. we return 2141 * an error code. called at user priority. 2142 * 2143 * XXX missing a few commands (see the 7053 driver for ideas) 2144 */ 2145 int 2146 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2147 { 2148 int s, rqno, dummy = 0; 2149 char *dvmabuf = NULL, *buf = NULL; 2150 struct xyc_softc *xycsc; 2151 int rseg, error; 2152 bus_dma_segment_t seg; 2153 2154 /* check sanity of requested command */ 2155 2156 switch (xio->cmd) { 2157 2158 case XYCMD_NOP: /* no op: everything should be zero */ 2159 if (xio->subfn || xio->dptr || xio->dlen || 2160 xio->block || xio->sectcnt) 2161 return (EINVAL); 2162 break; 2163 2164 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2165 case XYCMD_WR: 2166 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2167 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2168 return (EINVAL); 2169 break; 2170 2171 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2172 return (EINVAL); 2173 2174 break; 2175 2176 default: 2177 return (EINVAL);/* ??? */ 2178 } 2179 2180 xycsc = xy->parent; 2181 2182 /* create DVMA buffer for request if needed */ 2183 if (xio->dlen) { 2184 bus_addr_t busbuf; 2185 2186 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2187 &seg, &rseg, 2188 xio->dlen, (void **)&buf, 2189 &busbuf)) != 0) { 2190 return (error); 2191 } 2192 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2193 2194 if (xio->cmd == XYCMD_WR) { 2195 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2196 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2197 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2198 return (error); 2199 } 2200 } 2201 } 2202 /* do it! */ 2203 2204 error = 0; 2205 s = splbio(); 2206 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2207 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2208 if (rqno == XY_ERR_FAIL) { 2209 error = EIO; 2210 goto done; 2211 } 2212 xio->errnum = xycsc->ciorq->errnum; 2213 xio->tries = xycsc->ciorq->tries; 2214 XYC_DONE(xycsc, dummy); 2215 2216 if (xio->cmd == XYCMD_RD) 2217 error = copyout(buf, xio->dptr, xio->dlen); 2218 2219 done: 2220 splx(s); 2221 if (dvmabuf) { 2222 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2223 xio->dlen, buf); 2224 } 2225 return (error); 2226 } 2227 2228 /* 2229 * xyc_e2str: convert error code number into an error string 2230 */ 2231 const char * 2232 xyc_e2str(int no) 2233 { 2234 switch (no) { 2235 case XY_ERR_FAIL: 2236 return ("Software fatal error"); 2237 case XY_ERR_DERR: 2238 return ("DOUBLE ERROR"); 2239 case XY_ERR_AOK: 2240 return ("Successful completion"); 2241 case XY_ERR_IPEN: 2242 return("Interrupt pending"); 2243 case XY_ERR_BCFL: 2244 return("Busy conflict"); 2245 case XY_ERR_TIMO: 2246 return("Operation timeout"); 2247 case XY_ERR_NHDR: 2248 return("Header not found"); 2249 case XY_ERR_HARD: 2250 return("Hard ECC error"); 2251 case XY_ERR_ICYL: 2252 return("Illegal cylinder address"); 2253 case XY_ERR_ISEC: 2254 return("Illegal sector address"); 2255 case XY_ERR_SMAL: 2256 return("Last sector too small"); 2257 case XY_ERR_SACK: 2258 return("Slave ACK error (non-existent memory)"); 2259 case XY_ERR_CHER: 2260 return("Cylinder and head/header error"); 2261 case XY_ERR_SRTR: 2262 return("Auto-seek retry successful"); 2263 case XY_ERR_WPRO: 2264 return("Write-protect error"); 2265 case XY_ERR_UIMP: 2266 return("Unimplemented command"); 2267 case XY_ERR_DNRY: 2268 return("Drive not ready"); 2269 case XY_ERR_SZER: 2270 return("Sector count zero"); 2271 case XY_ERR_DFLT: 2272 return("Drive faulted"); 2273 case XY_ERR_ISSZ: 2274 return("Illegal sector size"); 2275 case XY_ERR_SLTA: 2276 return("Self test A"); 2277 case XY_ERR_SLTB: 2278 return("Self test B"); 2279 case XY_ERR_SLTC: 2280 return("Self test C"); 2281 case XY_ERR_SOFT: 2282 return("Soft ECC error"); 2283 case XY_ERR_SFOK: 2284 return("Soft ECC error recovered"); 2285 case XY_ERR_IHED: 2286 return("Illegal head"); 2287 case XY_ERR_DSEQ: 2288 return("Disk sequencer error"); 2289 case XY_ERR_SEEK: 2290 return("Seek error"); 2291 default: 2292 return ("Unknown error"); 2293 } 2294 } 2295 2296 int 2297 xyc_entoact(int errnum) 2298 { 2299 switch (errnum) { 2300 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2301 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2302 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2303 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2304 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2305 2306 return(XY_ERA_PROG); /* program error ! */ 2307 2308 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2309 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2310 case XY_ERR_SOFT: 2311 2312 return(XY_ERA_HARD); /* hard error, retry */ 2313 2314 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2315 2316 return(XY_ERA_RSET); /* hard error reset */ 2317 2318 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2319 2320 return(XY_ERA_SOFT); /* an FYI error */ 2321 2322 case XY_ERR_WPRO: 2323 2324 return(XY_ERA_WPRO); /* write protect */ 2325 } 2326 2327 return(XY_ERA_PROG); /* ??? */ 2328 } 2329
Indexes created Tue Sep 30 11:09:46 GMT 2025