xy.c revision 1.93
1 /* $NetBSD: xy.c,v 1.93 2012/10/27 17:18:38 chs 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 1.93 2012/10/27 17:18:38 chs 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 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 xyc->sc_dev = self; 398 399 /* get addressing and intr level stuff from autoconfig and load it 400 * into our xyc_softc. */ 401 402 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 403 404 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 405 panic("xyc: vme alloc"); 406 407 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 408 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 409 panic("xyc: vme_map"); 410 411 xyc->xyc = (struct xyc *) bh; /* XXX */ 412 xyc->ipl = va->ilevel; 413 xyc->vector = va->ivector; 414 xyc->no_ols = 0; /* XXX should be from config */ 415 416 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 417 xyc->sc_drives[lcv] = NULL; 418 419 /* 420 * allocate and zero buffers 421 * check boundaries of the KVA's ... all IOPBs must reside in 422 * the same 64K region. 423 */ 424 425 /* Get DMA handle for misc. transfers */ 426 if ((error = vme_dmamap_create( 427 ct, /* VME chip tag */ 428 MAXPHYS, /* size */ 429 VME_AM_A24, /* address modifier */ 430 VME_D16, /* data size */ 431 0, /* swap */ 432 1, /* nsegments */ 433 MAXPHYS, /* maxsegsz */ 434 0, /* boundary */ 435 BUS_DMA_NOWAIT, 436 &xyc->auxmap)) != 0) { 437 438 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 439 error); 440 return; 441 } 442 443 /* Get DMA handle for mapping iorq descriptors */ 444 if ((error = vme_dmamap_create( 445 ct, /* VME chip tag */ 446 XYC_MAXIOPB * sizeof(struct xy_iopb), 447 VME_AM_A24, /* address modifier */ 448 VME_D16, /* data size */ 449 0, /* swap */ 450 1, /* nsegments */ 451 XYC_MAXIOPB * sizeof(struct xy_iopb), 452 64*1024, /* boundary */ 453 BUS_DMA_NOWAIT, 454 &xyc->iopmap)) != 0) { 455 456 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 457 error); 458 return; 459 } 460 461 /* Get DMA buffer for iorq descriptors */ 462 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 463 XYC_MAXIOPB * sizeof(struct xy_iopb), 464 (void **)&xyc->iopbase, 465 &busaddr)) != 0) { 466 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 467 error); 468 return; 469 } 470 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 471 472 memset(xyc->iopbase, 0, XYC_MAXIOPB * sizeof(struct xy_iopb)); 473 474 xyc->reqs = (struct xy_iorq *) 475 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 476 M_DEVBUF, M_NOWAIT|M_ZERO); 477 if (xyc->reqs == NULL) 478 panic("xyc malloc"); 479 480 /* 481 * init iorq to iopb pointers, and non-zero fields in the 482 * iopb which never change. 483 */ 484 485 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 486 xyc->xy_chain[lcv] = NULL; 487 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 488 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 489 xyc->iopbase[lcv].asr = 1; /* always the same */ 490 xyc->iopbase[lcv].eef = 1; /* always the same */ 491 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 492 xyc->iopbase[lcv].aud = 1; /* always the same */ 493 xyc->iopbase[lcv].relo = 1; /* always the same */ 494 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 495 496 if ((error = vme_dmamap_create( 497 ct, /* VME chip tag */ 498 MAXPHYS, /* size */ 499 VME_AM_A24, /* address modifier */ 500 VME_D16, /* data size */ 501 0, /* swap */ 502 1, /* nsegments */ 503 MAXPHYS, /* maxsegsz */ 504 0, /* boundary */ 505 BUS_DMA_NOWAIT, 506 &xyc->reqs[lcv].dmamap)) != 0) { 507 508 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 509 error); 510 return; 511 } 512 } 513 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 514 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 515 xyc->xy_hand = 0; 516 517 /* read controller parameters and insure we have a 450/451 */ 518 519 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 520 res = xyc->ciopb->ctyp; 521 XYC_DONE(xyc, error); 522 if (res != XYCT_450) { 523 if (error) 524 printf(": %s: ", xyc_e2str(error)); 525 printf(": doesn't identify as a 450/451\n"); 526 return; 527 } 528 printf(": Xylogics 450/451"); 529 if (xyc->no_ols) 530 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 531 printf("\n"); 532 if (error) { 533 aprint_error_dev(xyc->sc_dev, "error: %s\n", 534 xyc_e2str(error)); 535 return; 536 } 537 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 538 printf("%s: 24 bit addressing turned off\n", 539 device_xname(xyc->sc_dev)); 540 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 541 printf("to enable 24 bit mode and this driver\n"); 542 return; 543 } 544 545 /* link in interrupt with higher level software */ 546 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 547 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 548 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 549 device_xname(xyc->sc_dev), "intr"); 550 551 callout_init(&xyc->sc_tick_ch, 0); 552 553 /* now we must look for disks using autoconfig */ 554 xa.fullmode = XY_SUB_POLL; 555 xa.booting = 1; 556 557 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 558 (void) config_found(self, (void *) &xa, NULL); 559 560 /* start the watchdog clock */ 561 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 562 563 } 564 565 /* 566 * xymatch: probe for disk. 567 * 568 * note: we almost always say disk is present. this allows us to 569 * spin up and configure a disk after the system is booted (we can 570 * call xyattach!). 571 */ 572 int 573 xymatch(device_t parent, cfdata_t cf, void *aux) 574 { 575 struct xyc_attach_args *xa = aux; 576 577 /* looking for autoconf wildcard or exact match */ 578 579 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 580 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 581 return 0; 582 583 return 1; 584 585 } 586 587 /* 588 * xyattach: attach a disk. this can be called from autoconf and also 589 * from xyopen/xystrategy. 590 */ 591 void 592 xyattach(device_t parent, device_t self, void *aux) 593 { 594 struct xy_softc *xy = device_private(self), *oxy; 595 struct xyc_softc *xyc = device_private(parent); 596 struct xyc_attach_args *xa = aux; 597 int spt, mb, blk, lcv, fmode, s = 0, newstate; 598 struct dkbad *dkb; 599 int rseg, error; 600 bus_dma_segment_t seg; 601 bus_addr_t busaddr; 602 void * dmaddr; 603 char * buf; 604 605 xy->sc_dev = self; 606 607 /* 608 * Always re-initialize the disk structure. We want statistics 609 * to start with a clean slate. 610 */ 611 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 612 613 /* if booting, init the xy_softc */ 614 615 if (xa->booting) { 616 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 617 xy->flags = 0; 618 xy->parent = xyc; 619 620 /* init queue of waiting bufs */ 621 622 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 623 624 xy->xyrq = &xyc->reqs[xa->driveno]; 625 626 } 627 xy->xy_drive = xa->driveno; 628 fmode = xa->fullmode; 629 xyc->sc_drives[xa->driveno] = xy; 630 631 /* if not booting, make sure we are the only process in the attach for 632 * this drive. if locked out, sleep on it. */ 633 634 if (!xa->booting) { 635 s = splbio(); 636 while (xy->state == XY_DRIVE_ATTACHING) { 637 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 638 splx(s); 639 return; 640 } 641 } 642 printf("%s at %s", 643 device_xname(xy->sc_dev), device_xname(xy->parent->sc_dev)); 644 } 645 646 /* we now have control */ 647 xy->state = XY_DRIVE_ATTACHING; 648 newstate = XY_DRIVE_UNKNOWN; 649 650 buf = NULL; 651 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 652 XYFM_BPS, 653 (void **)&buf, 654 &busaddr)) != 0) { 655 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 656 error); 657 return; 658 } 659 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 660 661 /* first try and reset the drive */ 662 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 663 XYC_DONE(xyc, error); 664 if (error == XY_ERR_DNRY) { 665 printf(" drive %d: off-line\n", xa->driveno); 666 goto done; 667 } 668 if (error) { 669 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 670 goto done; 671 } 672 printf(" drive %d: ready", xa->driveno); 673 674 /* 675 * now set drive parameters (to semi-bogus values) so we can read the 676 * disk label. 677 */ 678 xy->pcyl = xy->ncyl = 1; 679 xy->acyl = 0; 680 xy->nhead = 1; 681 xy->nsect = 1; 682 xy->sectpercyl = 1; 683 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 684 xy->dkb.bt_bad[lcv].bt_cyl = 685 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 686 687 /* read disk label */ 688 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 689 xy->drive_type++) { 690 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 691 dmaddr, fmode); 692 XYC_DONE(xyc, error); 693 if (error == XY_ERR_AOK) break; 694 } 695 696 if (error != XY_ERR_AOK) { 697 aprint_normal("\n"); 698 aprint_error_dev(xy->sc_dev, "reading disk label failed: %s\n", 699 xyc_e2str(error)); 700 goto done; 701 } 702 printf(" (drive type %d)\n", xy->drive_type); 703 704 newstate = XY_DRIVE_NOLABEL; 705 706 xy->hw_spt = spt = 0; /* XXX needed ? */ 707 /* Attach the disk: must be before getdisklabel to malloc label */ 708 disk_init(&xy->sc_dk, device_xname(xy->sc_dev), &xydkdriver); 709 disk_attach(&xy->sc_dk); 710 711 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 712 goto done; 713 714 /* inform the user of what is up */ 715 printf("%s: <%s>, pcyl %d\n", device_xname(xy->sc_dev), 716 buf, xy->pcyl); 717 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 718 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 719 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 720 XYFM_BPS); 721 722 /* 723 * 450/451 stupidity: the drive type is encoded into the format 724 * of the disk. the drive type in the IOPB must match the drive 725 * type in the format, or you will not be able to do I/O to the 726 * disk (you get header not found errors). if you have two drives 727 * of different sizes that have the same drive type in their 728 * formatting then you are out of luck. 729 * 730 * this problem was corrected in the 753/7053. 731 */ 732 733 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 734 oxy = xyc->sc_drives[lcv]; 735 if (oxy == NULL || oxy == xy) continue; 736 if (oxy->drive_type != xy->drive_type) continue; 737 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 738 xy->nhead != oxy->nhead) { 739 printf("%s: %s and %s must be the same size!\n", 740 device_xname(xyc->sc_dev), device_xname(xy->sc_dev), 741 device_xname(oxy->sc_dev)); 742 panic("xy drive size mismatch"); 743 } 744 } 745 746 747 /* now set the real drive parameters! */ 748 749 blk = (xy->nsect - 1) + 750 ((xy->nhead - 1) * xy->nsect) + 751 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 752 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 753 XYC_DONE(xyc, error); 754 if (error) { 755 aprint_error_dev(xy->sc_dev, "write drive size failed: %s\n", 756 xyc_e2str(error)); 757 goto done; 758 } 759 newstate = XY_DRIVE_ONLINE; 760 761 /* 762 * read bad144 table. this table resides on the first sector of the 763 * last track of the disk (i.e. second cyl of "acyl" area). 764 */ 765 766 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 767 /* last cyl */ 768 (xy->nhead - 1) * xy->nsect; /* last head */ 769 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 770 dmaddr, fmode); 771 XYC_DONE(xyc, error); 772 if (error) { 773 aprint_error_dev(xy->sc_dev, "reading bad144 failed: %s\n", 774 xyc_e2str(error)); 775 goto done; 776 } 777 778 /* check dkbad for sanity */ 779 dkb = (struct dkbad *) buf; 780 for (lcv = 0; lcv < 126; lcv++) { 781 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 782 dkb->bt_bad[lcv].bt_cyl == 0) && 783 dkb->bt_bad[lcv].bt_trksec == 0xffff) 784 continue; /* blank */ 785 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 786 break; 787 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 788 break; 789 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 790 break; 791 } 792 if (lcv != 126) { 793 aprint_error_dev(xy->sc_dev, "warning: invalid bad144 sector!\n"); 794 } else { 795 memcpy(&xy->dkb, buf, XYFM_BPS); 796 } 797 798 done: 799 if (buf != NULL) { 800 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 801 &seg, rseg, XYFM_BPS, buf); 802 } 803 804 xy->state = newstate; 805 if (!xa->booting) { 806 wakeup(&xy->state); 807 splx(s); 808 } 809 } 810 811 /* 812 * end of autoconfig functions 813 */ 814 815 /* 816 * { b , c } d e v s w f u n c t i o n s 817 */ 818 819 /* 820 * xyclose: close device 821 */ 822 int 823 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 824 { 825 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 826 int part = DISKPART(dev); 827 828 /* clear mask bits */ 829 830 switch (fmt) { 831 case S_IFCHR: 832 xy->sc_dk.dk_copenmask &= ~(1 << part); 833 break; 834 case S_IFBLK: 835 xy->sc_dk.dk_bopenmask &= ~(1 << part); 836 break; 837 } 838 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 839 840 return 0; 841 } 842 843 /* 844 * xydump: crash dump system 845 */ 846 int 847 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 848 { 849 int unit, part; 850 struct xy_softc *xy; 851 852 unit = DISKUNIT(dev); 853 part = DISKPART(dev); 854 855 xy = device_lookup_private(&xy_cd, unit); 856 if (!xy) 857 return ENXIO; 858 859 printf("%s%c: crash dump not supported (yet)\n", device_xname(xy->sc_dev), 860 'a' + part); 861 862 return ENXIO; 863 864 /* outline: globals: "dumplo" == sector number of partition to start 865 * dump at (convert to physical sector with partition table) 866 * "dumpsize" == size of dump in clicks "physmem" == size of physical 867 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 868 * physmem) 869 * 870 * dump a copy of physical memory to the dump device starting at sector 871 * "dumplo" in the swap partition (make sure > 0). map in pages as 872 * we go. use polled I/O. 873 * 874 * XXX how to handle NON_CONTIG? */ 875 876 } 877 878 static enum kauth_device_req 879 xy_getkauthreq(u_char cmd) 880 { 881 enum kauth_device_req req; 882 883 switch (cmd) { 884 case XYCMD_WR: 885 case XYCMD_WTH: 886 case XYCMD_WFM: 887 case XYCMD_WRH: 888 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 889 break; 890 891 case XYCMD_RD: 892 case XYCMD_RTH: 893 case XYCMD_RDH: 894 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 895 break; 896 897 case XYCMD_RDS: 898 case XYCMD_MBD: 899 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 900 break; 901 902 case XYCMD_RST: 903 case XYCMD_SDS: 904 case XYCMD_MBL: 905 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 906 break; 907 908 case XYCMD_NOP: 909 case XYCMD_SK: 910 case XYCMD_ST: 911 case XYCMD_R: 912 default: 913 req = 0; 914 break; 915 } 916 917 return (req); 918 } 919 920 /* 921 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 922 */ 923 int 924 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 925 { 926 struct xy_softc *xy; 927 struct xd_iocmd *xio; 928 int error, s, unit; 929 #ifdef __HAVE_OLD_DISKLABEL 930 struct disklabel newlabel; 931 #endif 932 struct disklabel *lp; 933 934 unit = DISKUNIT(dev); 935 936 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 937 return (ENXIO); 938 939 /* switch on ioctl type */ 940 941 switch (command) { 942 case DIOCSBAD: /* set bad144 info */ 943 if ((flag & FWRITE) == 0) 944 return EBADF; 945 s = splbio(); 946 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 947 splx(s); 948 return 0; 949 950 case DIOCGDINFO: /* get disk label */ 951 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 952 return 0; 953 #ifdef __HAVE_OLD_DISKLABEL 954 case ODIOCGDINFO: 955 newlabel = *(xy->sc_dk.dk_label); 956 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 957 return ENOTTY; 958 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 959 return 0; 960 #endif 961 962 case DIOCGPART: /* get partition info */ 963 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 964 ((struct partinfo *) addr)->part = 965 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 966 return 0; 967 968 case DIOCSDINFO: /* set disk label */ 969 #ifdef __HAVE_OLD_DISKLABEL 970 case ODIOCSDINFO: 971 if (command == ODIOCSDINFO) { 972 memset(&newlabel, 0, sizeof newlabel); 973 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 974 lp = &newlabel; 975 } else 976 #endif 977 lp = (struct disklabel *)addr; 978 979 if ((flag & FWRITE) == 0) 980 return EBADF; 981 error = setdisklabel(xy->sc_dk.dk_label, 982 lp, /* xy->sc_dk.dk_openmask : */ 0, 983 xy->sc_dk.dk_cpulabel); 984 if (error == 0) { 985 if (xy->state == XY_DRIVE_NOLABEL) 986 xy->state = XY_DRIVE_ONLINE; 987 } 988 return error; 989 990 case DIOCWLABEL: /* change write status of disk label */ 991 if ((flag & FWRITE) == 0) 992 return EBADF; 993 if (*(int *) addr) 994 xy->flags |= XY_WLABEL; 995 else 996 xy->flags &= ~XY_WLABEL; 997 return 0; 998 999 case DIOCWDINFO: /* write disk label */ 1000 #ifdef __HAVE_OLD_DISKLABEL 1001 case ODIOCWDINFO: 1002 if (command == ODIOCWDINFO) { 1003 memset(&newlabel, 0, sizeof newlabel); 1004 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1005 lp = &newlabel; 1006 } else 1007 #endif 1008 lp = (struct disklabel *)addr; 1009 1010 if ((flag & FWRITE) == 0) 1011 return EBADF; 1012 error = setdisklabel(xy->sc_dk.dk_label, 1013 lp, /* xy->sc_dk.dk_openmask : */ 0, 1014 xy->sc_dk.dk_cpulabel); 1015 if (error == 0) { 1016 if (xy->state == XY_DRIVE_NOLABEL) 1017 xy->state = XY_DRIVE_ONLINE; 1018 1019 /* Simulate opening partition 0 so write succeeds. */ 1020 xy->sc_dk.dk_openmask |= (1 << 0); 1021 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1022 xystrategy, xy->sc_dk.dk_label, 1023 xy->sc_dk.dk_cpulabel); 1024 xy->sc_dk.dk_openmask = 1025 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1026 } 1027 return error; 1028 1029 case DIOSXDCMD: { 1030 enum kauth_device_req req; 1031 1032 xio = (struct xd_iocmd *) addr; 1033 req = xy_getkauthreq(xio->cmd); 1034 if ((error = kauth_authorize_device_passthru(l->l_cred, 1035 dev, req, xio)) != 0) 1036 return (error); 1037 return (xyc_ioctlcmd(xy, dev, xio)); 1038 } 1039 1040 default: 1041 return ENOTTY; 1042 } 1043 } 1044 1045 /* 1046 * xyopen: open drive 1047 */ 1048 1049 int 1050 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1051 { 1052 int unit, part; 1053 struct xy_softc *xy; 1054 struct xyc_attach_args xa; 1055 1056 /* first, could it be a valid target? */ 1057 1058 unit = DISKUNIT(dev); 1059 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1060 return (ENXIO); 1061 part = DISKPART(dev); 1062 1063 /* do we need to attach the drive? */ 1064 1065 if (xy->state == XY_DRIVE_UNKNOWN) { 1066 xa.driveno = xy->xy_drive; 1067 xa.fullmode = XY_SUB_WAIT; 1068 xa.booting = 0; 1069 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1070 if (xy->state == XY_DRIVE_UNKNOWN) { 1071 return (EIO); 1072 } 1073 } 1074 /* check for partition */ 1075 1076 if (part != RAW_PART && 1077 (part >= xy->sc_dk.dk_label->d_npartitions || 1078 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1079 return (ENXIO); 1080 } 1081 /* set open masks */ 1082 1083 switch (fmt) { 1084 case S_IFCHR: 1085 xy->sc_dk.dk_copenmask |= (1 << part); 1086 break; 1087 case S_IFBLK: 1088 xy->sc_dk.dk_bopenmask |= (1 << part); 1089 break; 1090 } 1091 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1092 1093 return 0; 1094 } 1095 1096 int 1097 xyread(dev_t dev, struct uio *uio, int flags) 1098 { 1099 1100 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1101 } 1102 1103 int 1104 xywrite(dev_t dev, struct uio *uio, int flags) 1105 { 1106 1107 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1108 } 1109 1110 1111 /* 1112 * xysize: return size of a partition for a dump 1113 */ 1114 1115 int 1116 xysize(dev_t dev) 1117 { 1118 struct xy_softc *xysc; 1119 int unit, part, size, omask; 1120 1121 /* valid unit? */ 1122 unit = DISKUNIT(dev); 1123 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1124 return (-1); 1125 1126 part = DISKPART(dev); 1127 omask = xysc->sc_dk.dk_openmask & (1 << part); 1128 1129 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1130 return (-1); 1131 1132 /* do it */ 1133 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1134 size = -1; /* only give valid size for swap partitions */ 1135 else 1136 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1137 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1138 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1139 return (-1); 1140 return (size); 1141 } 1142 1143 /* 1144 * xystrategy: buffering system interface to xy. 1145 */ 1146 1147 void 1148 xystrategy(struct buf *bp) 1149 { 1150 struct xy_softc *xy; 1151 int s, unit; 1152 struct xyc_attach_args xa; 1153 struct disklabel *lp; 1154 daddr_t blkno; 1155 1156 unit = DISKUNIT(bp->b_dev); 1157 1158 /* check for live device */ 1159 1160 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1161 bp->b_blkno < 0 || 1162 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1163 bp->b_error = EINVAL; 1164 goto done; 1165 } 1166 /* do we need to attach the drive? */ 1167 1168 if (xy->state == XY_DRIVE_UNKNOWN) { 1169 xa.driveno = xy->xy_drive; 1170 xa.fullmode = XY_SUB_WAIT; 1171 xa.booting = 0; 1172 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1173 if (xy->state == XY_DRIVE_UNKNOWN) { 1174 bp->b_error = EIO; 1175 goto done; 1176 } 1177 } 1178 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1179 /* no I/O to unlabeled disks, unless raw partition */ 1180 bp->b_error = EIO; 1181 goto done; 1182 } 1183 /* short circuit zero length request */ 1184 1185 if (bp->b_bcount == 0) 1186 goto done; 1187 1188 /* check bounds with label (disksubr.c). Determine the size of the 1189 * transfer, and make sure it is within the boundaries of the 1190 * partition. Adjust transfer if needed, and signal errors or early 1191 * completion. */ 1192 1193 lp = xy->sc_dk.dk_label; 1194 1195 if (bounds_check_with_label(&xy->sc_dk, bp, 1196 (xy->flags & XY_WLABEL) != 0) <= 0) 1197 goto done; 1198 1199 /* 1200 * Now convert the block number to absolute and put it in 1201 * terms of the device's logical block size. 1202 */ 1203 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1204 if (DISKPART(bp->b_dev) != RAW_PART) 1205 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1206 1207 bp->b_rawblkno = blkno; 1208 1209 /* 1210 * now we know we have a valid buf structure that we need to do I/O 1211 * on. 1212 */ 1213 s = splbio(); /* protect the queues */ 1214 1215 bufq_put(xy->xyq, bp); 1216 1217 /* start 'em up */ 1218 1219 xyc_start(xy->parent, NULL); 1220 1221 /* done! */ 1222 1223 splx(s); 1224 return; 1225 1226 done: /* tells upper layers we are done with this 1227 * buf */ 1228 bp->b_resid = bp->b_bcount; 1229 biodone(bp); 1230 } 1231 /* 1232 * end of {b,c}devsw functions 1233 */ 1234 1235 /* 1236 * i n t e r r u p t f u n c t i o n 1237 * 1238 * xycintr: hardware interrupt. 1239 */ 1240 int 1241 xycintr(void *v) 1242 { 1243 struct xyc_softc *xycsc = v; 1244 1245 /* kick the event counter */ 1246 1247 xycsc->sc_intrcnt.ev_count++; 1248 1249 /* remove as many done IOPBs as possible */ 1250 1251 xyc_remove_iorq(xycsc); 1252 1253 /* start any iorq's already waiting */ 1254 1255 xyc_start(xycsc, NULL); 1256 1257 return (1); 1258 } 1259 /* 1260 * end of interrupt function 1261 */ 1262 1263 /* 1264 * i n t e r n a l f u n c t i o n s 1265 */ 1266 1267 /* 1268 * xyc_rqinit: fill out the fields of an I/O request 1269 */ 1270 1271 inline void 1272 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) 1273 { 1274 rq->xyc = xyc; 1275 rq->xy = xy; 1276 rq->ttl = XYC_MAXTTL + 10; 1277 rq->mode = md; 1278 rq->tries = rq->errnum = rq->lasterror = 0; 1279 rq->blockno = blk; 1280 rq->sectcnt = cnt; 1281 rq->dbuf = db; 1282 rq->buf = bp; 1283 } 1284 1285 /* 1286 * xyc_rqtopb: load up an IOPB based on an iorq 1287 */ 1288 1289 void 1290 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1291 { 1292 u_long block, dp; 1293 1294 /* normal IOPB case, standard stuff */ 1295 1296 /* chain bit handled later */ 1297 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1298 iopb->com = cmd; 1299 iopb->errnum = 0; 1300 iopb->errs = 0; 1301 iopb->done = 0; 1302 if (iorq->xy) { 1303 iopb->unit = iorq->xy->xy_drive; 1304 iopb->dt = iorq->xy->drive_type; 1305 } else { 1306 iopb->unit = 0; 1307 iopb->dt = 0; 1308 } 1309 block = iorq->blockno; 1310 if (iorq->xy == NULL || block == 0) { 1311 iopb->sect = iopb->head = iopb->cyl = 0; 1312 } else { 1313 iopb->sect = block % iorq->xy->nsect; 1314 block = block / iorq->xy->nsect; 1315 iopb->head = block % iorq->xy->nhead; 1316 block = block / iorq->xy->nhead; 1317 iopb->cyl = block; 1318 } 1319 iopb->scnt = iorq->sectcnt; 1320 dp = (u_long) iorq->dbuf; 1321 if (iorq->dbuf == NULL) { 1322 iopb->dataa = 0; 1323 iopb->datar = 0; 1324 } else { 1325 iopb->dataa = (dp & 0xffff); 1326 iopb->datar = ((dp & 0xff0000) >> 16); 1327 } 1328 iopb->subfn = subfun; 1329 } 1330 1331 1332 /* 1333 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1334 */ 1335 1336 int 1337 xyc_unbusy(struct xyc *xyc, int del) 1338 { 1339 while (del-- > 0) { 1340 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1341 break; 1342 DELAY(1); 1343 } 1344 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1345 } 1346 1347 /* 1348 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1349 * note that NORM requests are handled separately. 1350 */ 1351 int 1352 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1353 int scnt, char *dptr, int fullmode) 1354 { 1355 int submode = XY_STATE(fullmode); 1356 struct xy_iorq *iorq = xycsc->ciorq; 1357 struct xy_iopb *iopb = xycsc->ciopb; 1358 1359 /* 1360 * is someone else using the control iopq wait for it if we can 1361 */ 1362 start: 1363 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1364 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1365 return(XY_ERR_FAIL); 1366 goto start; 1367 } 1368 1369 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1370 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1371 iorq->mode = XY_SUB_FREE; 1372 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1373 } 1374 1375 /* init iorq/iopb */ 1376 1377 xyc_rqinit(iorq, xycsc, 1378 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1379 fullmode, block, scnt, dptr, NULL); 1380 1381 /* load IOPB from iorq */ 1382 1383 xyc_rqtopb(iorq, iopb, cmd, subfn); 1384 1385 /* submit it for processing */ 1386 1387 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1388 1389 return(XY_ERR_AOK); 1390 } 1391 1392 /* 1393 * xyc_startbuf 1394 * start a buffer for running 1395 */ 1396 1397 int 1398 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1399 { 1400 int partno, error; 1401 struct xy_iorq *iorq; 1402 struct xy_iopb *iopb; 1403 u_long block; 1404 1405 iorq = xysc->xyrq; 1406 iopb = iorq->iopb; 1407 1408 /* get buf */ 1409 1410 if (bp == NULL) 1411 panic("xyc_startbuf null buf"); 1412 1413 partno = DISKPART(bp->b_dev); 1414 #ifdef XYC_DEBUG 1415 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1416 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1417 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1418 bp->b_bcount, bp->b_data); 1419 #endif 1420 1421 /* 1422 * load request. 1423 * 1424 * note that iorq points to the buffer as mapped into DVMA space, 1425 * where as the bp->b_data points to its non-DVMA mapping. 1426 */ 1427 1428 block = bp->b_rawblkno; 1429 1430 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1431 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1432 if (error != 0) { 1433 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1434 return (XY_ERR_FAIL); /* XXX: need some sort of 1435 * call-back scheme here? */ 1436 } 1437 1438 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1439 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1440 ? BUS_DMASYNC_PREREAD 1441 : BUS_DMASYNC_PREWRITE); 1442 1443 /* init iorq and load iopb from it */ 1444 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1445 bp->b_bcount / XYFM_BPS, 1446 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1447 bp); 1448 1449 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1450 1451 /* Instrumentation. */ 1452 disk_busy(&xysc->sc_dk); 1453 1454 return (XY_ERR_AOK); 1455 } 1456 1457 1458 /* 1459 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1460 * if ok. if it fail returns an error code. type is XY_SUB_*. 1461 * 1462 * note: caller frees iorq in all cases except NORM 1463 * 1464 * return value: 1465 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1466 * WAIT: XY_AOK (success), <error-code> (failed) 1467 * POLL: <same as WAIT> 1468 * NOQ : <same as NORM> 1469 * 1470 * there are three sources for i/o requests: 1471 * [1] xystrategy: normal block I/O, using "struct buf" system. 1472 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1473 * [3] open/ioctl: these are I/O requests done in the context of a process, 1474 * and the process should block until they are done. 1475 * 1476 * software state is stored in the iorq structure. each iorq has an 1477 * iopb structure. the hardware understands the iopb structure. 1478 * every command must go through an iopb. a 450 handles one iopb at a 1479 * time, where as a 451 can take them in chains. [the 450 claims it 1480 * can handle chains, but is appears to be buggy...] iopb are allocated 1481 * in DVMA space at boot up time. each disk gets one iopb, and the 1482 * controller gets one (for POLL and WAIT commands). what happens if 1483 * the iopb is busy? for i/o type [1], the buffers are queued at the 1484 * "buff" layer and * picked up later by the interrupt routine. for case 1485 * [2] we can only be blocked if there is a WAIT type I/O request being 1486 * run. since this can only happen when we are crashing, we wait a sec 1487 * and then steal the IOPB. for case [3] the process can sleep 1488 * on the iorq free list until some iopbs are available. 1489 */ 1490 1491 1492 int 1493 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1494 { 1495 struct xy_iopb *dmaiopb; 1496 1497 #ifdef XYC_DEBUG 1498 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1499 device_xname(xycsc->sc_dev), iorq, type); 1500 #endif 1501 1502 /* first check and see if controller is busy */ 1503 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1504 #ifdef XYC_DEBUG 1505 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1506 #endif 1507 if (type == XY_SUB_NOQ) 1508 return (XY_ERR_FAIL); /* failed */ 1509 switch (type) { 1510 case XY_SUB_NORM: 1511 return XY_ERR_AOK; /* success */ 1512 case XY_SUB_WAIT: 1513 while (iorq->iopb->done == 0) { 1514 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1515 } 1516 return (iorq->errnum); 1517 case XY_SUB_POLL: /* steal controller */ 1518 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1519 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1520 panic("xyc_submit_iorq: stuck xyc"); 1521 printf("%s: stole controller\n", 1522 device_xname(xycsc->sc_dev)); 1523 break; 1524 default: 1525 panic("xyc_submit_iorq adding"); 1526 } 1527 } 1528 1529 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1530 if (dmaiopb == NULL) { /* nothing doing? */ 1531 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1532 return(XY_ERR_AOK); 1533 panic("xyc_submit_iorq: xyc_chain failed!"); 1534 } 1535 1536 XYC_GO(xycsc->xyc, dmaiopb); 1537 1538 /* command now running, wrap it up */ 1539 switch (type) { 1540 case XY_SUB_NORM: 1541 case XY_SUB_NOQ: 1542 return (XY_ERR_AOK); /* success */ 1543 case XY_SUB_WAIT: 1544 while (iorq->iopb->done == 0) { 1545 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1546 } 1547 return (iorq->errnum); 1548 case XY_SUB_POLL: 1549 return (xyc_piodriver(xycsc, iorq)); 1550 default: 1551 panic("xyc_submit_iorq wrap up"); 1552 } 1553 panic("xyc_submit_iorq"); 1554 return 0; /* not reached */ 1555 } 1556 1557 1558 /* 1559 * xyc_chain: build a chain. return dvma address of first element in 1560 * the chain. iorq != NULL: means we only want that item on the chain. 1561 */ 1562 1563 struct xy_iopb * 1564 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1565 { 1566 int togo, chain, hand; 1567 1568 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1569 1570 /* 1571 * promote control IOPB to the top 1572 */ 1573 if (iorq == NULL) { 1574 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1575 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1576 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1577 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1578 } 1579 1580 /* 1581 * special case: if iorq != NULL then we have a POLL or WAIT request. 1582 * we let these take priority and do them first. 1583 */ 1584 if (iorq) { 1585 xycsc->xy_chain[0] = iorq; 1586 iorq->iopb->chen = 0; 1587 return(iorq->dmaiopb); 1588 } 1589 1590 /* 1591 * NORM case: do round robin and maybe chain (if allowed and possible) 1592 */ 1593 chain = 0; 1594 hand = xycsc->xy_hand; 1595 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1596 1597 for (togo = XYC_MAXIOPB; togo > 0; 1598 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1599 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1600 1601 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1602 xycsc->iopbase[hand].done) 1603 continue; /* not ready-for-i/o */ 1604 1605 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1606 iopb = xycsc->xy_chain[chain]->iopb; 1607 iopb->chen = 0; 1608 if (chain != 0) { 1609 /* adding a link to a chain */ 1610 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1611 prev_iopb->chen = 1; 1612 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1613 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1614 } else { 1615 /* head of chain */ 1616 iorq = xycsc->xy_chain[chain]; 1617 } 1618 chain++; 1619 1620 /* quit if chaining dis-allowed */ 1621 if (xycsc->no_ols) 1622 break; 1623 } 1624 1625 return(iorq ? iorq->dmaiopb : NULL); 1626 } 1627 1628 /* 1629 * xyc_piodriver 1630 * 1631 * programmed i/o driver. this function takes over the computer 1632 * and drains off the polled i/o request. it returns the status of the iorq 1633 * the caller is interesting in. 1634 */ 1635 int 1636 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1637 { 1638 int nreset = 0; 1639 int retval = 0; 1640 u_long res; 1641 #ifdef XYC_DEBUG 1642 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1643 #endif 1644 1645 while (iorq->iopb->done == 0) { 1646 1647 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1648 1649 /* we expect some progress soon */ 1650 if (res == XY_ERR_FAIL && nreset >= 2) { 1651 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1652 #ifdef XYC_DEBUG 1653 printf("xyc_piodriver: timeout\n"); 1654 #endif 1655 return (XY_ERR_FAIL); 1656 } 1657 if (res == XY_ERR_FAIL) { 1658 if (xyc_reset(xycsc, 0, 1659 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1660 XY_ERR_FAIL, 1661 0) == XY_ERR_FAIL) 1662 return (XY_ERR_FAIL); /* flushes all but POLL 1663 * requests, resets */ 1664 continue; 1665 } 1666 1667 xyc_remove_iorq(xycsc); /* may resubmit request */ 1668 1669 if (iorq->iopb->done == 0) 1670 xyc_start(xycsc, iorq); 1671 } 1672 1673 /* get return value */ 1674 1675 retval = iorq->errnum; 1676 1677 #ifdef XYC_DEBUG 1678 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1679 iorq->errnum, xyc_e2str(iorq->errnum)); 1680 #endif 1681 1682 /* start up any bufs that have queued */ 1683 1684 xyc_start(xycsc, NULL); 1685 1686 return (retval); 1687 } 1688 1689 /* 1690 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1691 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1692 */ 1693 void 1694 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1695 { 1696 struct xy_iopb tmpiopb; 1697 struct xy_iopb *iopb; 1698 int del; 1699 1700 iopb = xycsc->ciopb; 1701 1702 /* Save contents */ 1703 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1704 1705 iopb->chen = iopb->done = iopb->errs = 0; 1706 iopb->ien = 0; 1707 iopb->com = XYCMD_RST; 1708 iopb->unit = xysc->xy_drive; 1709 1710 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1711 1712 del = XYC_RESETUSEC; 1713 while (del > 0) { 1714 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1715 break; 1716 DELAY(1); 1717 del--; 1718 } 1719 1720 if (del <= 0 || iopb->errs) { 1721 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1722 xyc_e2str(iopb->errnum)); 1723 del = xycsc->xyc->xyc_rsetup; 1724 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1725 panic("xyc_reset"); 1726 } else { 1727 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1728 } 1729 1730 /* Restore contents */ 1731 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1732 } 1733 1734 1735 /* 1736 * xyc_reset: reset everything: requests are marked as errors except 1737 * a polled request (which is resubmitted) 1738 */ 1739 int 1740 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1741 int error, struct xy_softc *xysc) 1742 { 1743 int del = 0, lcv, retval = XY_ERR_AOK; 1744 1745 /* soft reset hardware */ 1746 1747 if (!quiet) 1748 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1749 del = xycsc->xyc->xyc_rsetup; 1750 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1751 if (del == XY_ERR_FAIL) { 1752 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1753 retval = XY_ERR_FAIL; 1754 } 1755 if (xysc) 1756 xyc_xyreset(xycsc, xysc); 1757 1758 /* fix queues based on "blast-mode" */ 1759 1760 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1761 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1762 1763 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1764 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1765 XY_STATE(iorq->mode) != XY_SUB_NORM) 1766 /* is it active? */ 1767 continue; 1768 1769 if (blastmode == XY_RSET_ALL || 1770 blastmode != iorq) { 1771 /* failed */ 1772 iorq->errnum = error; 1773 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1774 switch (XY_STATE(iorq->mode)) { 1775 case XY_SUB_NORM: 1776 iorq->buf->b_error = EIO; 1777 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1778 1779 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1780 iorq->dmamap->dm_mapsize, 1781 (iorq->buf->b_flags & B_READ) 1782 ? BUS_DMASYNC_POSTREAD 1783 : BUS_DMASYNC_POSTWRITE); 1784 1785 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1786 1787 (void)bufq_get(iorq->xy->xyq); 1788 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1789 (xycsc->reqs[lcv].buf->b_bcount - 1790 xycsc->reqs[lcv].buf->b_resid), 1791 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1792 biodone(iorq->buf); 1793 iorq->mode = XY_SUB_FREE; 1794 break; 1795 case XY_SUB_WAIT: 1796 wakeup(iorq); 1797 case XY_SUB_POLL: 1798 iorq->mode = 1799 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1800 break; 1801 } 1802 1803 } else { 1804 1805 /* resubmit, no need to do anything here */ 1806 } 1807 } 1808 1809 /* 1810 * now, if stuff is waiting, start it. 1811 * since we just reset it should go 1812 */ 1813 xyc_start(xycsc, NULL); 1814 1815 return (retval); 1816 } 1817 1818 /* 1819 * xyc_start: start waiting buffers 1820 */ 1821 1822 void 1823 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1824 { 1825 int lcv; 1826 struct xy_softc *xy; 1827 1828 if (iorq == NULL) { 1829 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1830 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1831 if (bufq_peek(xy->xyq) == NULL) continue; 1832 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1833 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1834 } 1835 } 1836 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1837 } 1838 1839 /* 1840 * xyc_remove_iorq: remove "done" IOPB's. 1841 */ 1842 1843 int 1844 xyc_remove_iorq(struct xyc_softc *xycsc) 1845 { 1846 int errnum, rq, comm, errs; 1847 struct xyc *xyc = xycsc->xyc; 1848 u_long addr; 1849 struct xy_iopb *iopb; 1850 struct xy_iorq *iorq; 1851 struct buf *bp; 1852 1853 if (xyc->xyc_csr & XYC_DERR) { 1854 /* 1855 * DOUBLE ERROR: should never happen under normal use. This 1856 * error is so bad, you can't even tell which IOPB is bad, so 1857 * we dump them all. 1858 */ 1859 errnum = XY_ERR_DERR; 1860 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1861 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1862 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1863 panic("xyc_remove_iorq: controller DEAD"); 1864 } 1865 return (XY_ERR_AOK); 1866 } 1867 1868 /* 1869 * get iopb that is done, loop down the chain 1870 */ 1871 1872 if (xyc->xyc_csr & XYC_ERR) { 1873 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1874 } 1875 if (xyc->xyc_csr & XYC_IPND) { 1876 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1877 } 1878 1879 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1880 iorq = xycsc->xy_chain[rq]; 1881 if (iorq == NULL) break; /* done ! */ 1882 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1883 continue; /* free, or done */ 1884 iopb = iorq->iopb; 1885 if (iopb->done == 0) 1886 continue; /* not done yet */ 1887 1888 comm = iopb->com; 1889 errs = iopb->errs; 1890 1891 if (errs) 1892 iorq->errnum = iopb->errnum; 1893 else 1894 iorq->errnum = 0; 1895 1896 /* handle non-fatal errors */ 1897 1898 if (errs && 1899 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1900 continue; /* AOK: we resubmitted it */ 1901 1902 1903 /* this iorq is now done (hasn't been restarted or anything) */ 1904 1905 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1906 xyc_perror(iorq, iopb, 0); 1907 1908 /* now, if read/write check to make sure we got all the data 1909 * we needed. (this may not be the case if we got an error in 1910 * the middle of a multisector request). */ 1911 1912 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1913 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1914 /* we just successfully processed a bad144 sector 1915 * note: if we are in bad 144 mode, the pointers have 1916 * been advanced already (see above) and are pointing 1917 * at the bad144 sector. to exit bad144 mode, we 1918 * must advance the pointers 1 sector and issue a new 1919 * request if there are still sectors left to process 1920 * 1921 */ 1922 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1923 1924 /* exit b144 mode */ 1925 iorq->mode = iorq->mode & (~XY_MODE_B144); 1926 1927 if (iorq->sectcnt) { /* more to go! */ 1928 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1929 iopb->errs = iopb->done = 0; 1930 iorq->tries = 0; 1931 iopb->scnt = iorq->sectcnt; 1932 iopb->cyl = iorq->blockno / 1933 iorq->xy->sectpercyl; 1934 iopb->head = 1935 (iorq->blockno / iorq->xy->nhead) % 1936 iorq->xy->nhead; 1937 iopb->sect = iorq->blockno % XYFM_BPS; 1938 addr = (u_long) iorq->dbuf; 1939 iopb->dataa = (addr & 0xffff); 1940 iopb->datar = ((addr & 0xff0000) >> 16); 1941 /* will resubit at end */ 1942 continue; 1943 } 1944 } 1945 /* final cleanup, totally done with this request */ 1946 1947 switch (XY_STATE(iorq->mode)) { 1948 case XY_SUB_NORM: 1949 bp = iorq->buf; 1950 if (errs) { 1951 bp->b_error = EIO; 1952 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1953 } else { 1954 bp->b_resid = 0; /* done */ 1955 } 1956 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1957 iorq->dmamap->dm_mapsize, 1958 (iorq->buf->b_flags & B_READ) 1959 ? BUS_DMASYNC_POSTREAD 1960 : BUS_DMASYNC_POSTWRITE); 1961 1962 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1963 1964 (void)bufq_get(iorq->xy->xyq); 1965 disk_unbusy(&iorq->xy->sc_dk, 1966 (bp->b_bcount - bp->b_resid), 1967 (bp->b_flags & B_READ)); 1968 iorq->mode = XY_SUB_FREE; 1969 biodone(bp); 1970 break; 1971 case XY_SUB_WAIT: 1972 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1973 wakeup(iorq); 1974 break; 1975 case XY_SUB_POLL: 1976 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1977 break; 1978 } 1979 } 1980 1981 return (XY_ERR_AOK); 1982 } 1983 1984 /* 1985 * xyc_perror: print error. 1986 * - if still_trying is true: we got an error, retried and got a 1987 * different error. in that case lasterror is the old error, 1988 * and errnum is the new one. 1989 * - if still_trying is not true, then if we ever had an error it 1990 * is in lasterror. also, if iorq->errnum == 0, then we recovered 1991 * from that error (otherwise iorq->errnum == iorq->lasterror). 1992 */ 1993 void 1994 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 1995 { 1996 1997 int error = iorq->lasterror; 1998 1999 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2000 : device_xname(iorq->xyc->sc_dev)); 2001 if (iorq->buf) 2002 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2003 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2004 printf("%s %d/%d/%d: ", 2005 (iopb->com == XYCMD_RD) ? "read" : "write", 2006 iopb->cyl, iopb->head, iopb->sect); 2007 printf("%s", xyc_e2str(error)); 2008 2009 if (still_trying) 2010 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2011 else 2012 if (iorq->errnum == 0) 2013 printf(" [recovered in %d tries]", iorq->tries); 2014 2015 printf("\n"); 2016 } 2017 2018 /* 2019 * xyc_error: non-fatal error encountered... recover. 2020 * return AOK if resubmitted, return FAIL if this iopb is done 2021 */ 2022 int 2023 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2024 int comm) 2025 { 2026 int errnum = iorq->errnum; 2027 int erract = xyc_entoact(errnum); 2028 int oldmode, advance; 2029 #ifdef __sparc__ 2030 int i; 2031 #endif 2032 2033 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2034 oldmode = iorq->mode; 2035 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2036 /* make xyc_start ignore us */ 2037 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2038 iorq->mode = oldmode; 2039 } 2040 /* check for read/write to a sector in bad144 table if bad: redirect 2041 * request to bad144 area */ 2042 2043 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2044 (iorq->mode & XY_MODE_B144) == 0) { 2045 advance = iorq->sectcnt - iopb->scnt; 2046 XYC_ADVANCE(iorq, advance); 2047 #ifdef __sparc__ 2048 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2049 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2050 iorq->blockno % iorq->xy->nsect)) != -1) { 2051 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2052 * redirect */ 2053 iopb->errnum = iopb->done = iopb->errs = 0; 2054 iopb->scnt = 1; 2055 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2056 /* second to last acyl */ 2057 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2058 * standard */ 2059 iopb->head = i / iorq->xy->nhead; 2060 iopb->sect = i % iorq->xy->nhead; 2061 /* will resubmit when we come out of remove_iorq */ 2062 return (XY_ERR_AOK); /* recovered! */ 2063 } 2064 #endif 2065 } 2066 2067 /* 2068 * it isn't a bad144 sector, must be real error! see if we can retry 2069 * it? 2070 */ 2071 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2072 xyc_perror(iorq, iopb, 1); /* inform of error state 2073 * change */ 2074 iorq->lasterror = errnum; 2075 2076 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2077 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2078 iorq->tries++; 2079 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2080 /* will resubmit at end of remove_iorq */ 2081 return (XY_ERR_AOK); /* recovered! */ 2082 } 2083 2084 /* failed to recover from this error */ 2085 return (XY_ERR_FAIL); 2086 } 2087 2088 /* 2089 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2090 */ 2091 void 2092 xyc_tick(void *arg) 2093 { 2094 struct xyc_softc *xycsc = arg; 2095 int lcv, s, reset = 0; 2096 2097 /* reduce ttl for each request if one goes to zero, reset xyc */ 2098 s = splbio(); 2099 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2100 if (xycsc->reqs[lcv].mode == 0 || 2101 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2102 continue; 2103 xycsc->reqs[lcv].ttl--; 2104 if (xycsc->reqs[lcv].ttl == 0) 2105 reset = 1; 2106 } 2107 if (reset) { 2108 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2109 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2110 } 2111 splx(s); 2112 2113 /* until next time */ 2114 2115 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2116 } 2117 2118 /* 2119 * xyc_ioctlcmd: this function provides a user level interface to the 2120 * controller via ioctl. this allows "format" programs to be written 2121 * in user code, and is also useful for some debugging. we return 2122 * an error code. called at user priority. 2123 * 2124 * XXX missing a few commands (see the 7053 driver for ideas) 2125 */ 2126 int 2127 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2128 { 2129 int s, rqno, dummy = 0; 2130 char *dvmabuf = NULL, *buf = NULL; 2131 struct xyc_softc *xycsc; 2132 int rseg, error; 2133 bus_dma_segment_t seg; 2134 2135 /* check sanity of requested command */ 2136 2137 switch (xio->cmd) { 2138 2139 case XYCMD_NOP: /* no op: everything should be zero */ 2140 if (xio->subfn || xio->dptr || xio->dlen || 2141 xio->block || xio->sectcnt) 2142 return (EINVAL); 2143 break; 2144 2145 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2146 case XYCMD_WR: 2147 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2148 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2149 return (EINVAL); 2150 break; 2151 2152 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2153 return (EINVAL); 2154 2155 break; 2156 2157 default: 2158 return (EINVAL);/* ??? */ 2159 } 2160 2161 xycsc = xy->parent; 2162 2163 /* create DVMA buffer for request if needed */ 2164 if (xio->dlen) { 2165 bus_addr_t busbuf; 2166 2167 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2168 &seg, &rseg, 2169 xio->dlen, (void **)&buf, 2170 &busbuf)) != 0) { 2171 return (error); 2172 } 2173 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2174 2175 if (xio->cmd == XYCMD_WR) { 2176 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2177 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2178 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2179 return (error); 2180 } 2181 } 2182 } 2183 /* do it! */ 2184 2185 error = 0; 2186 s = splbio(); 2187 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2188 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2189 if (rqno == XY_ERR_FAIL) { 2190 error = EIO; 2191 goto done; 2192 } 2193 xio->errnum = xycsc->ciorq->errnum; 2194 xio->tries = xycsc->ciorq->tries; 2195 XYC_DONE(xycsc, dummy); 2196 2197 if (xio->cmd == XYCMD_RD) 2198 error = copyout(buf, xio->dptr, xio->dlen); 2199 2200 done: 2201 splx(s); 2202 if (dvmabuf) { 2203 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2204 xio->dlen, buf); 2205 } 2206 return (error); 2207 } 2208 2209 /* 2210 * xyc_e2str: convert error code number into an error string 2211 */ 2212 const char * 2213 xyc_e2str(int no) 2214 { 2215 switch (no) { 2216 case XY_ERR_FAIL: 2217 return ("Software fatal error"); 2218 case XY_ERR_DERR: 2219 return ("DOUBLE ERROR"); 2220 case XY_ERR_AOK: 2221 return ("Successful completion"); 2222 case XY_ERR_IPEN: 2223 return("Interrupt pending"); 2224 case XY_ERR_BCFL: 2225 return("Busy conflict"); 2226 case XY_ERR_TIMO: 2227 return("Operation timeout"); 2228 case XY_ERR_NHDR: 2229 return("Header not found"); 2230 case XY_ERR_HARD: 2231 return("Hard ECC error"); 2232 case XY_ERR_ICYL: 2233 return("Illegal cylinder address"); 2234 case XY_ERR_ISEC: 2235 return("Illegal sector address"); 2236 case XY_ERR_SMAL: 2237 return("Last sector too small"); 2238 case XY_ERR_SACK: 2239 return("Slave ACK error (non-existent memory)"); 2240 case XY_ERR_CHER: 2241 return("Cylinder and head/header error"); 2242 case XY_ERR_SRTR: 2243 return("Auto-seek retry successful"); 2244 case XY_ERR_WPRO: 2245 return("Write-protect error"); 2246 case XY_ERR_UIMP: 2247 return("Unimplemented command"); 2248 case XY_ERR_DNRY: 2249 return("Drive not ready"); 2250 case XY_ERR_SZER: 2251 return("Sector count zero"); 2252 case XY_ERR_DFLT: 2253 return("Drive faulted"); 2254 case XY_ERR_ISSZ: 2255 return("Illegal sector size"); 2256 case XY_ERR_SLTA: 2257 return("Self test A"); 2258 case XY_ERR_SLTB: 2259 return("Self test B"); 2260 case XY_ERR_SLTC: 2261 return("Self test C"); 2262 case XY_ERR_SOFT: 2263 return("Soft ECC error"); 2264 case XY_ERR_SFOK: 2265 return("Soft ECC error recovered"); 2266 case XY_ERR_IHED: 2267 return("Illegal head"); 2268 case XY_ERR_DSEQ: 2269 return("Disk sequencer error"); 2270 case XY_ERR_SEEK: 2271 return("Seek error"); 2272 default: 2273 return ("Unknown error"); 2274 } 2275 } 2276 2277 int 2278 xyc_entoact(int errnum) 2279 { 2280 switch (errnum) { 2281 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2282 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2283 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2284 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2285 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2286 2287 return(XY_ERA_PROG); /* program error ! */ 2288 2289 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2290 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2291 case XY_ERR_SOFT: 2292 2293 return(XY_ERA_HARD); /* hard error, retry */ 2294 2295 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2296 2297 return(XY_ERA_RSET); /* hard error reset */ 2298 2299 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2300 2301 return(XY_ERA_SOFT); /* an FYI error */ 2302 2303 case XY_ERR_WPRO: 2304 2305 return(XY_ERA_WPRO); /* write protect */ 2306 } 2307 2308 return(XY_ERA_PROG); /* ??? */ 2309 } 2310
Indexes created Tue Sep 30 11:09:46 GMT 2025