xy.c revision 1.95
1 /* $NetBSD: xy.c,v 1.95 2014/03/16 05:20:29 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 1.95 2014/03/16 05:20:29 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_flag = D_DISK 218 }; 219 220 const struct cdevsw xy_cdevsw = { 221 .d_open = xyopen, 222 .d_close = xyclose, 223 .d_read = xyread, 224 .d_write = xywrite, 225 .d_ioctl = xyioctl, 226 .d_stop = nostop, 227 .d_tty = notty, 228 .d_poll = nopoll, 229 .d_mmap = nommap, 230 .d_kqfilter = nokqfilter, 231 .d_flag = D_DISK 232 }; 233 234 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 235 int driveno; /* unit number */ 236 int fullmode; /* submit mode */ 237 int booting; /* are we booting or not? */ 238 }; 239 240 /* 241 * dkdriver 242 */ 243 244 struct dkdriver xydkdriver = { xystrategy }; 245 246 /* 247 * start: disk label fix code (XXX) 248 */ 249 250 static void *xy_labeldata; 251 252 static void 253 xydummystrat(struct buf *bp) 254 { 255 if (bp->b_bcount != XYFM_BPS) 256 panic("xydummystrat"); 257 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 258 bp->b_oflags |= BO_DONE; 259 bp->b_cflags &= ~BC_BUSY; 260 } 261 262 int 263 xygetdisklabel(struct xy_softc *xy, void *b) 264 { 265 const char *err; 266 #if defined(__sparc__) || defined(sun3) 267 struct sun_disklabel *sdl; 268 #endif 269 270 /* We already have the label data in `b'; setup for dummy strategy */ 271 xy_labeldata = b; 272 273 /* Required parameter for readdisklabel() */ 274 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 275 276 err = readdisklabel(MAKEDISKDEV(0, device_unit(xy->sc_dev), RAW_PART), 277 xydummystrat, 278 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 279 if (err) { 280 printf("%s: %s\n", device_xname(xy->sc_dev), err); 281 return(XY_ERR_FAIL); 282 } 283 284 #if defined(__sparc__) || defined(sun3) 285 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 286 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 287 if (sdl->sl_magic == SUN_DKMAGIC) { 288 xy->pcyl = sdl->sl_pcylinders; 289 } else 290 #endif 291 { 292 printf("%s: WARNING: no `pcyl' in disk label.\n", 293 device_xname(xy->sc_dev)); 294 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 295 xy->sc_dk.dk_label->d_acylinders; 296 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 297 device_xname(xy->sc_dev), xy->pcyl); 298 } 299 300 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 301 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 302 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 303 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 304 xy->sectpercyl = xy->nhead * xy->nsect; 305 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 306 * sun->bsd */ 307 return(XY_ERR_AOK); 308 } 309 310 /* 311 * end: disk label fix code (XXX) 312 */ 313 314 /* 315 * Shorthand for allocating, mapping and loading a DMA buffer 316 */ 317 int 318 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) 319 { 320 int nseg; 321 int error; 322 323 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 324 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 325 return (error); 326 } 327 328 if ((error = bus_dmamem_map(tag, seg, nseg, 329 len, kvap, 330 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 331 bus_dmamem_free(tag, seg, nseg); 332 return (error); 333 } 334 335 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 336 BUS_DMA_NOWAIT)) != 0) { 337 bus_dmamem_unmap(tag, *kvap, len); 338 bus_dmamem_free(tag, seg, nseg); 339 return (error); 340 } 341 342 *dmap = map->dm_segs[0].ds_addr; 343 *nsegp = nseg; 344 return (0); 345 } 346 347 void 348 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) 349 { 350 351 bus_dmamap_unload(tag, map); 352 bus_dmamem_unmap(tag, kva, len); 353 bus_dmamem_free(tag, seg, nseg); 354 } 355 356 357 /* 358 * a u t o c o n f i g f u n c t i o n s 359 */ 360 361 /* 362 * xycmatch: determine if xyc is present or not. we do a 363 * soft reset to detect the xyc. 364 */ 365 int 366 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 367 { 368 struct xyc *xyc = (void *)handle; /* XXX */ 369 370 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 371 } 372 373 int 374 xycmatch(device_t parent, cfdata_t cf, void *aux) 375 { 376 struct vme_attach_args *va = aux; 377 vme_chipset_tag_t ct = va->va_vct; 378 vme_am_t mod; 379 int error; 380 381 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 382 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 383 return (0); 384 385 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 386 mod, VME_D16, xyc_probe, 0); 387 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 388 389 return (error == 0); 390 } 391 392 /* 393 * xycattach: attach controller 394 */ 395 void 396 xycattach(device_t parent, device_t self, void *aux) 397 { 398 struct xyc_softc *xyc = device_private(self); 399 struct vme_attach_args *va = aux; 400 vme_chipset_tag_t ct = va->va_vct; 401 bus_space_tag_t bt; 402 bus_space_handle_t bh; 403 vme_intr_handle_t ih; 404 vme_am_t mod; 405 struct xyc_attach_args xa; 406 int lcv, res, error; 407 bus_dma_segment_t seg; 408 int rseg; 409 vme_mapresc_t resc; 410 bus_addr_t busaddr; 411 412 xyc->sc_dev = self; 413 414 /* get addressing and intr level stuff from autoconfig and load it 415 * into our xyc_softc. */ 416 417 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 418 419 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 420 panic("xyc: vme alloc"); 421 422 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 423 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 424 panic("xyc: vme_map"); 425 426 xyc->xyc = (struct xyc *) bh; /* XXX */ 427 xyc->ipl = va->ilevel; 428 xyc->vector = va->ivector; 429 xyc->no_ols = 0; /* XXX should be from config */ 430 431 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 432 xyc->sc_drives[lcv] = NULL; 433 434 /* 435 * allocate and zero buffers 436 * check boundaries of the KVA's ... all IOPBs must reside in 437 * the same 64K region. 438 */ 439 440 /* Get DMA handle for misc. transfers */ 441 if ((error = vme_dmamap_create( 442 ct, /* VME chip tag */ 443 MAXPHYS, /* size */ 444 VME_AM_A24, /* address modifier */ 445 VME_D16, /* data size */ 446 0, /* swap */ 447 1, /* nsegments */ 448 MAXPHYS, /* maxsegsz */ 449 0, /* boundary */ 450 BUS_DMA_NOWAIT, 451 &xyc->auxmap)) != 0) { 452 453 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 454 error); 455 return; 456 } 457 458 /* Get DMA handle for mapping iorq descriptors */ 459 if ((error = vme_dmamap_create( 460 ct, /* VME chip tag */ 461 XYC_MAXIOPB * sizeof(struct xy_iopb), 462 VME_AM_A24, /* address modifier */ 463 VME_D16, /* data size */ 464 0, /* swap */ 465 1, /* nsegments */ 466 XYC_MAXIOPB * sizeof(struct xy_iopb), 467 64*1024, /* boundary */ 468 BUS_DMA_NOWAIT, 469 &xyc->iopmap)) != 0) { 470 471 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 472 error); 473 return; 474 } 475 476 /* Get DMA buffer for iorq descriptors */ 477 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 478 XYC_MAXIOPB * sizeof(struct xy_iopb), 479 (void **)&xyc->iopbase, 480 &busaddr)) != 0) { 481 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 482 error); 483 return; 484 } 485 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 486 487 memset(xyc->iopbase, 0, XYC_MAXIOPB * sizeof(struct xy_iopb)); 488 489 xyc->reqs = (struct xy_iorq *) 490 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 491 M_DEVBUF, M_NOWAIT|M_ZERO); 492 if (xyc->reqs == NULL) 493 panic("xyc malloc"); 494 495 /* 496 * init iorq to iopb pointers, and non-zero fields in the 497 * iopb which never change. 498 */ 499 500 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 501 xyc->xy_chain[lcv] = NULL; 502 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 503 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 504 xyc->iopbase[lcv].asr = 1; /* always the same */ 505 xyc->iopbase[lcv].eef = 1; /* always the same */ 506 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 507 xyc->iopbase[lcv].aud = 1; /* always the same */ 508 xyc->iopbase[lcv].relo = 1; /* always the same */ 509 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 510 511 if ((error = vme_dmamap_create( 512 ct, /* VME chip tag */ 513 MAXPHYS, /* size */ 514 VME_AM_A24, /* address modifier */ 515 VME_D16, /* data size */ 516 0, /* swap */ 517 1, /* nsegments */ 518 MAXPHYS, /* maxsegsz */ 519 0, /* boundary */ 520 BUS_DMA_NOWAIT, 521 &xyc->reqs[lcv].dmamap)) != 0) { 522 523 aprint_error_dev(xyc->sc_dev, "DMA buffer map create error %d\n", 524 error); 525 return; 526 } 527 } 528 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 529 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 530 xyc->xy_hand = 0; 531 532 /* read controller parameters and insure we have a 450/451 */ 533 534 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 535 res = xyc->ciopb->ctyp; 536 XYC_DONE(xyc, error); 537 if (res != XYCT_450) { 538 if (error) 539 printf(": %s: ", xyc_e2str(error)); 540 printf(": doesn't identify as a 450/451\n"); 541 return; 542 } 543 printf(": Xylogics 450/451"); 544 if (xyc->no_ols) 545 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 546 printf("\n"); 547 if (error) { 548 aprint_error_dev(xyc->sc_dev, "error: %s\n", 549 xyc_e2str(error)); 550 return; 551 } 552 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 553 printf("%s: 24 bit addressing turned off\n", 554 device_xname(xyc->sc_dev)); 555 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 556 printf("to enable 24 bit mode and this driver\n"); 557 return; 558 } 559 560 /* link in interrupt with higher level software */ 561 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 562 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 563 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 564 device_xname(xyc->sc_dev), "intr"); 565 566 callout_init(&xyc->sc_tick_ch, 0); 567 568 /* now we must look for disks using autoconfig */ 569 xa.fullmode = XY_SUB_POLL; 570 xa.booting = 1; 571 572 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 573 (void) config_found(self, (void *) &xa, NULL); 574 575 /* start the watchdog clock */ 576 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 577 578 } 579 580 /* 581 * xymatch: probe for disk. 582 * 583 * note: we almost always say disk is present. this allows us to 584 * spin up and configure a disk after the system is booted (we can 585 * call xyattach!). 586 */ 587 int 588 xymatch(device_t parent, cfdata_t cf, void *aux) 589 { 590 struct xyc_attach_args *xa = aux; 591 592 /* looking for autoconf wildcard or exact match */ 593 594 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 595 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 596 return 0; 597 598 return 1; 599 600 } 601 602 /* 603 * xyattach: attach a disk. this can be called from autoconf and also 604 * from xyopen/xystrategy. 605 */ 606 void 607 xyattach(device_t parent, device_t self, void *aux) 608 { 609 struct xy_softc *xy = device_private(self), *oxy; 610 struct xyc_softc *xyc = device_private(parent); 611 struct xyc_attach_args *xa = aux; 612 int spt, mb, blk, lcv, fmode, s = 0, newstate; 613 struct dkbad *dkb; 614 int rseg, error; 615 bus_dma_segment_t seg; 616 bus_addr_t busaddr; 617 void * dmaddr; 618 char * buf; 619 620 xy->sc_dev = self; 621 622 /* 623 * Always re-initialize the disk structure. We want statistics 624 * to start with a clean slate. 625 */ 626 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 627 628 /* if booting, init the xy_softc */ 629 630 if (xa->booting) { 631 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 632 xy->flags = 0; 633 xy->parent = xyc; 634 635 /* init queue of waiting bufs */ 636 637 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 638 639 xy->xyrq = &xyc->reqs[xa->driveno]; 640 641 } 642 xy->xy_drive = xa->driveno; 643 fmode = xa->fullmode; 644 xyc->sc_drives[xa->driveno] = xy; 645 646 /* if not booting, make sure we are the only process in the attach for 647 * this drive. if locked out, sleep on it. */ 648 649 if (!xa->booting) { 650 s = splbio(); 651 while (xy->state == XY_DRIVE_ATTACHING) { 652 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 653 splx(s); 654 return; 655 } 656 } 657 printf("%s at %s", 658 device_xname(xy->sc_dev), device_xname(xy->parent->sc_dev)); 659 } 660 661 /* we now have control */ 662 xy->state = XY_DRIVE_ATTACHING; 663 newstate = XY_DRIVE_UNKNOWN; 664 665 buf = NULL; 666 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 667 XYFM_BPS, 668 (void **)&buf, 669 &busaddr)) != 0) { 670 aprint_error_dev(xyc->sc_dev, "DMA buffer alloc error %d\n", 671 error); 672 return; 673 } 674 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 675 676 /* first try and reset the drive */ 677 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 678 XYC_DONE(xyc, error); 679 if (error == XY_ERR_DNRY) { 680 printf(" drive %d: off-line\n", xa->driveno); 681 goto done; 682 } 683 if (error) { 684 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 685 goto done; 686 } 687 printf(" drive %d: ready", xa->driveno); 688 689 /* 690 * now set drive parameters (to semi-bogus values) so we can read the 691 * disk label. 692 */ 693 xy->pcyl = xy->ncyl = 1; 694 xy->acyl = 0; 695 xy->nhead = 1; 696 xy->nsect = 1; 697 xy->sectpercyl = 1; 698 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 699 xy->dkb.bt_bad[lcv].bt_cyl = 700 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 701 702 /* read disk label */ 703 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 704 xy->drive_type++) { 705 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 706 dmaddr, fmode); 707 XYC_DONE(xyc, error); 708 if (error == XY_ERR_AOK) break; 709 } 710 711 if (error != XY_ERR_AOK) { 712 aprint_normal("\n"); 713 aprint_error_dev(xy->sc_dev, "reading disk label failed: %s\n", 714 xyc_e2str(error)); 715 goto done; 716 } 717 printf(" (drive type %d)\n", xy->drive_type); 718 719 newstate = XY_DRIVE_NOLABEL; 720 721 xy->hw_spt = spt = 0; /* XXX needed ? */ 722 /* Attach the disk: must be before getdisklabel to malloc label */ 723 disk_init(&xy->sc_dk, device_xname(xy->sc_dev), &xydkdriver); 724 disk_attach(&xy->sc_dk); 725 726 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 727 goto done; 728 729 /* inform the user of what is up */ 730 printf("%s: <%s>, pcyl %d\n", device_xname(xy->sc_dev), 731 buf, xy->pcyl); 732 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 733 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 734 device_xname(xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 735 XYFM_BPS); 736 737 /* 738 * 450/451 stupidity: the drive type is encoded into the format 739 * of the disk. the drive type in the IOPB must match the drive 740 * type in the format, or you will not be able to do I/O to the 741 * disk (you get header not found errors). if you have two drives 742 * of different sizes that have the same drive type in their 743 * formatting then you are out of luck. 744 * 745 * this problem was corrected in the 753/7053. 746 */ 747 748 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 749 oxy = xyc->sc_drives[lcv]; 750 if (oxy == NULL || oxy == xy) continue; 751 if (oxy->drive_type != xy->drive_type) continue; 752 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 753 xy->nhead != oxy->nhead) { 754 printf("%s: %s and %s must be the same size!\n", 755 device_xname(xyc->sc_dev), device_xname(xy->sc_dev), 756 device_xname(oxy->sc_dev)); 757 panic("xy drive size mismatch"); 758 } 759 } 760 761 762 /* now set the real drive parameters! */ 763 764 blk = (xy->nsect - 1) + 765 ((xy->nhead - 1) * xy->nsect) + 766 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 767 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 768 XYC_DONE(xyc, error); 769 if (error) { 770 aprint_error_dev(xy->sc_dev, "write drive size failed: %s\n", 771 xyc_e2str(error)); 772 goto done; 773 } 774 newstate = XY_DRIVE_ONLINE; 775 776 /* 777 * read bad144 table. this table resides on the first sector of the 778 * last track of the disk (i.e. second cyl of "acyl" area). 779 */ 780 781 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 782 /* last cyl */ 783 (xy->nhead - 1) * xy->nsect; /* last head */ 784 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 785 dmaddr, fmode); 786 XYC_DONE(xyc, error); 787 if (error) { 788 aprint_error_dev(xy->sc_dev, "reading bad144 failed: %s\n", 789 xyc_e2str(error)); 790 goto done; 791 } 792 793 /* check dkbad for sanity */ 794 dkb = (struct dkbad *) buf; 795 for (lcv = 0; lcv < 126; lcv++) { 796 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 797 dkb->bt_bad[lcv].bt_cyl == 0) && 798 dkb->bt_bad[lcv].bt_trksec == 0xffff) 799 continue; /* blank */ 800 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 801 break; 802 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 803 break; 804 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 805 break; 806 } 807 if (lcv != 126) { 808 aprint_error_dev(xy->sc_dev, "warning: invalid bad144 sector!\n"); 809 } else { 810 memcpy(&xy->dkb, buf, XYFM_BPS); 811 } 812 813 done: 814 if (buf != NULL) { 815 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 816 &seg, rseg, XYFM_BPS, buf); 817 } 818 819 xy->state = newstate; 820 if (!xa->booting) { 821 wakeup(&xy->state); 822 splx(s); 823 } 824 } 825 826 /* 827 * end of autoconfig functions 828 */ 829 830 /* 831 * { b , c } d e v s w f u n c t i o n s 832 */ 833 834 /* 835 * xyclose: close device 836 */ 837 int 838 xyclose(dev_t dev, int flag, int fmt, struct lwp *l) 839 { 840 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 841 int part = DISKPART(dev); 842 843 /* clear mask bits */ 844 845 switch (fmt) { 846 case S_IFCHR: 847 xy->sc_dk.dk_copenmask &= ~(1 << part); 848 break; 849 case S_IFBLK: 850 xy->sc_dk.dk_bopenmask &= ~(1 << part); 851 break; 852 } 853 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 854 855 return 0; 856 } 857 858 /* 859 * xydump: crash dump system 860 */ 861 int 862 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 863 { 864 int unit, part; 865 struct xy_softc *xy; 866 867 unit = DISKUNIT(dev); 868 part = DISKPART(dev); 869 870 xy = device_lookup_private(&xy_cd, unit); 871 if (!xy) 872 return ENXIO; 873 874 printf("%s%c: crash dump not supported (yet)\n", device_xname(xy->sc_dev), 875 'a' + part); 876 877 return ENXIO; 878 879 /* outline: globals: "dumplo" == sector number of partition to start 880 * dump at (convert to physical sector with partition table) 881 * "dumpsize" == size of dump in clicks "physmem" == size of physical 882 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 883 * physmem) 884 * 885 * dump a copy of physical memory to the dump device starting at sector 886 * "dumplo" in the swap partition (make sure > 0). map in pages as 887 * we go. use polled I/O. 888 * 889 * XXX how to handle NON_CONTIG? */ 890 891 } 892 893 static enum kauth_device_req 894 xy_getkauthreq(u_char cmd) 895 { 896 enum kauth_device_req req; 897 898 switch (cmd) { 899 case XYCMD_WR: 900 case XYCMD_WTH: 901 case XYCMD_WFM: 902 case XYCMD_WRH: 903 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 904 break; 905 906 case XYCMD_RD: 907 case XYCMD_RTH: 908 case XYCMD_RDH: 909 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 910 break; 911 912 case XYCMD_RDS: 913 case XYCMD_MBD: 914 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 915 break; 916 917 case XYCMD_RST: 918 case XYCMD_SDS: 919 case XYCMD_MBL: 920 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 921 break; 922 923 case XYCMD_NOP: 924 case XYCMD_SK: 925 case XYCMD_ST: 926 case XYCMD_R: 927 default: 928 req = 0; 929 break; 930 } 931 932 return (req); 933 } 934 935 /* 936 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 937 */ 938 int 939 xyioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 940 { 941 struct xy_softc *xy; 942 struct xd_iocmd *xio; 943 int error, s, unit; 944 #ifdef __HAVE_OLD_DISKLABEL 945 struct disklabel newlabel; 946 #endif 947 struct disklabel *lp; 948 949 unit = DISKUNIT(dev); 950 951 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 952 return (ENXIO); 953 954 /* switch on ioctl type */ 955 956 switch (command) { 957 case DIOCSBAD: /* set bad144 info */ 958 if ((flag & FWRITE) == 0) 959 return EBADF; 960 s = splbio(); 961 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 962 splx(s); 963 return 0; 964 965 case DIOCGDINFO: /* get disk label */ 966 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 967 return 0; 968 #ifdef __HAVE_OLD_DISKLABEL 969 case ODIOCGDINFO: 970 newlabel = *(xy->sc_dk.dk_label); 971 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 972 return ENOTTY; 973 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 974 return 0; 975 #endif 976 977 case DIOCGPART: /* get partition info */ 978 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 979 ((struct partinfo *) addr)->part = 980 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 981 return 0; 982 983 case DIOCSDINFO: /* set disk label */ 984 #ifdef __HAVE_OLD_DISKLABEL 985 case ODIOCSDINFO: 986 if (command == ODIOCSDINFO) { 987 memset(&newlabel, 0, sizeof newlabel); 988 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 989 lp = &newlabel; 990 } else 991 #endif 992 lp = (struct disklabel *)addr; 993 994 if ((flag & FWRITE) == 0) 995 return EBADF; 996 error = setdisklabel(xy->sc_dk.dk_label, 997 lp, /* xy->sc_dk.dk_openmask : */ 0, 998 xy->sc_dk.dk_cpulabel); 999 if (error == 0) { 1000 if (xy->state == XY_DRIVE_NOLABEL) 1001 xy->state = XY_DRIVE_ONLINE; 1002 } 1003 return error; 1004 1005 case DIOCWLABEL: /* change write status of disk label */ 1006 if ((flag & FWRITE) == 0) 1007 return EBADF; 1008 if (*(int *) addr) 1009 xy->flags |= XY_WLABEL; 1010 else 1011 xy->flags &= ~XY_WLABEL; 1012 return 0; 1013 1014 case DIOCWDINFO: /* write disk label */ 1015 #ifdef __HAVE_OLD_DISKLABEL 1016 case ODIOCWDINFO: 1017 if (command == ODIOCWDINFO) { 1018 memset(&newlabel, 0, sizeof newlabel); 1019 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1020 lp = &newlabel; 1021 } else 1022 #endif 1023 lp = (struct disklabel *)addr; 1024 1025 if ((flag & FWRITE) == 0) 1026 return EBADF; 1027 error = setdisklabel(xy->sc_dk.dk_label, 1028 lp, /* xy->sc_dk.dk_openmask : */ 0, 1029 xy->sc_dk.dk_cpulabel); 1030 if (error == 0) { 1031 if (xy->state == XY_DRIVE_NOLABEL) 1032 xy->state = XY_DRIVE_ONLINE; 1033 1034 /* Simulate opening partition 0 so write succeeds. */ 1035 xy->sc_dk.dk_openmask |= (1 << 0); 1036 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1037 xystrategy, xy->sc_dk.dk_label, 1038 xy->sc_dk.dk_cpulabel); 1039 xy->sc_dk.dk_openmask = 1040 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1041 } 1042 return error; 1043 1044 case DIOSXDCMD: { 1045 enum kauth_device_req req; 1046 1047 xio = (struct xd_iocmd *) addr; 1048 req = xy_getkauthreq(xio->cmd); 1049 if ((error = kauth_authorize_device_passthru(l->l_cred, 1050 dev, req, xio)) != 0) 1051 return (error); 1052 return (xyc_ioctlcmd(xy, dev, xio)); 1053 } 1054 1055 default: 1056 return ENOTTY; 1057 } 1058 } 1059 1060 /* 1061 * xyopen: open drive 1062 */ 1063 1064 int 1065 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1066 { 1067 int unit, part; 1068 struct xy_softc *xy; 1069 struct xyc_attach_args xa; 1070 1071 /* first, could it be a valid target? */ 1072 1073 unit = DISKUNIT(dev); 1074 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1075 return (ENXIO); 1076 part = DISKPART(dev); 1077 1078 /* do we need to attach the drive? */ 1079 1080 if (xy->state == XY_DRIVE_UNKNOWN) { 1081 xa.driveno = xy->xy_drive; 1082 xa.fullmode = XY_SUB_WAIT; 1083 xa.booting = 0; 1084 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1085 if (xy->state == XY_DRIVE_UNKNOWN) { 1086 return (EIO); 1087 } 1088 } 1089 /* check for partition */ 1090 1091 if (part != RAW_PART && 1092 (part >= xy->sc_dk.dk_label->d_npartitions || 1093 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1094 return (ENXIO); 1095 } 1096 /* set open masks */ 1097 1098 switch (fmt) { 1099 case S_IFCHR: 1100 xy->sc_dk.dk_copenmask |= (1 << part); 1101 break; 1102 case S_IFBLK: 1103 xy->sc_dk.dk_bopenmask |= (1 << part); 1104 break; 1105 } 1106 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1107 1108 return 0; 1109 } 1110 1111 int 1112 xyread(dev_t dev, struct uio *uio, int flags) 1113 { 1114 1115 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1116 } 1117 1118 int 1119 xywrite(dev_t dev, struct uio *uio, int flags) 1120 { 1121 1122 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1123 } 1124 1125 1126 /* 1127 * xysize: return size of a partition for a dump 1128 */ 1129 1130 int 1131 xysize(dev_t dev) 1132 { 1133 struct xy_softc *xysc; 1134 int unit, part, size, omask; 1135 1136 /* valid unit? */ 1137 unit = DISKUNIT(dev); 1138 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1139 return (-1); 1140 1141 part = DISKPART(dev); 1142 omask = xysc->sc_dk.dk_openmask & (1 << part); 1143 1144 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1145 return (-1); 1146 1147 /* do it */ 1148 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1149 size = -1; /* only give valid size for swap partitions */ 1150 else 1151 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1152 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1153 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1154 return (-1); 1155 return (size); 1156 } 1157 1158 /* 1159 * xystrategy: buffering system interface to xy. 1160 */ 1161 1162 void 1163 xystrategy(struct buf *bp) 1164 { 1165 struct xy_softc *xy; 1166 int s, unit; 1167 struct xyc_attach_args xa; 1168 struct disklabel *lp; 1169 daddr_t blkno; 1170 1171 unit = DISKUNIT(bp->b_dev); 1172 1173 /* check for live device */ 1174 1175 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1176 bp->b_blkno < 0 || 1177 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1178 bp->b_error = EINVAL; 1179 goto done; 1180 } 1181 /* do we need to attach the drive? */ 1182 1183 if (xy->state == XY_DRIVE_UNKNOWN) { 1184 xa.driveno = xy->xy_drive; 1185 xa.fullmode = XY_SUB_WAIT; 1186 xa.booting = 0; 1187 xyattach(xy->parent->sc_dev, xy->sc_dev, &xa); 1188 if (xy->state == XY_DRIVE_UNKNOWN) { 1189 bp->b_error = EIO; 1190 goto done; 1191 } 1192 } 1193 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1194 /* no I/O to unlabeled disks, unless raw partition */ 1195 bp->b_error = EIO; 1196 goto done; 1197 } 1198 /* short circuit zero length request */ 1199 1200 if (bp->b_bcount == 0) 1201 goto done; 1202 1203 /* check bounds with label (disksubr.c). Determine the size of the 1204 * transfer, and make sure it is within the boundaries of the 1205 * partition. Adjust transfer if needed, and signal errors or early 1206 * completion. */ 1207 1208 lp = xy->sc_dk.dk_label; 1209 1210 if (bounds_check_with_label(&xy->sc_dk, bp, 1211 (xy->flags & XY_WLABEL) != 0) <= 0) 1212 goto done; 1213 1214 /* 1215 * Now convert the block number to absolute and put it in 1216 * terms of the device's logical block size. 1217 */ 1218 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1219 if (DISKPART(bp->b_dev) != RAW_PART) 1220 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1221 1222 bp->b_rawblkno = blkno; 1223 1224 /* 1225 * now we know we have a valid buf structure that we need to do I/O 1226 * on. 1227 */ 1228 s = splbio(); /* protect the queues */ 1229 1230 bufq_put(xy->xyq, bp); 1231 1232 /* start 'em up */ 1233 1234 xyc_start(xy->parent, NULL); 1235 1236 /* done! */ 1237 1238 splx(s); 1239 return; 1240 1241 done: /* tells upper layers we are done with this 1242 * buf */ 1243 bp->b_resid = bp->b_bcount; 1244 biodone(bp); 1245 } 1246 /* 1247 * end of {b,c}devsw functions 1248 */ 1249 1250 /* 1251 * i n t e r r u p t f u n c t i o n 1252 * 1253 * xycintr: hardware interrupt. 1254 */ 1255 int 1256 xycintr(void *v) 1257 { 1258 struct xyc_softc *xycsc = v; 1259 1260 /* kick the event counter */ 1261 1262 xycsc->sc_intrcnt.ev_count++; 1263 1264 /* remove as many done IOPBs as possible */ 1265 1266 xyc_remove_iorq(xycsc); 1267 1268 /* start any iorq's already waiting */ 1269 1270 xyc_start(xycsc, NULL); 1271 1272 return (1); 1273 } 1274 /* 1275 * end of interrupt function 1276 */ 1277 1278 /* 1279 * i n t e r n a l f u n c t i o n s 1280 */ 1281 1282 /* 1283 * xyc_rqinit: fill out the fields of an I/O request 1284 */ 1285 1286 inline void 1287 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) 1288 { 1289 rq->xyc = xyc; 1290 rq->xy = xy; 1291 rq->ttl = XYC_MAXTTL + 10; 1292 rq->mode = md; 1293 rq->tries = rq->errnum = rq->lasterror = 0; 1294 rq->blockno = blk; 1295 rq->sectcnt = cnt; 1296 rq->dbuf = db; 1297 rq->buf = bp; 1298 } 1299 1300 /* 1301 * xyc_rqtopb: load up an IOPB based on an iorq 1302 */ 1303 1304 void 1305 xyc_rqtopb(struct xy_iorq *iorq, struct xy_iopb *iopb, int cmd, int subfun) 1306 { 1307 u_long block, dp; 1308 1309 /* normal IOPB case, standard stuff */ 1310 1311 /* chain bit handled later */ 1312 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1313 iopb->com = cmd; 1314 iopb->errnum = 0; 1315 iopb->errs = 0; 1316 iopb->done = 0; 1317 if (iorq->xy) { 1318 iopb->unit = iorq->xy->xy_drive; 1319 iopb->dt = iorq->xy->drive_type; 1320 } else { 1321 iopb->unit = 0; 1322 iopb->dt = 0; 1323 } 1324 block = iorq->blockno; 1325 if (iorq->xy == NULL || block == 0) { 1326 iopb->sect = iopb->head = iopb->cyl = 0; 1327 } else { 1328 iopb->sect = block % iorq->xy->nsect; 1329 block = block / iorq->xy->nsect; 1330 iopb->head = block % iorq->xy->nhead; 1331 block = block / iorq->xy->nhead; 1332 iopb->cyl = block; 1333 } 1334 iopb->scnt = iorq->sectcnt; 1335 dp = (u_long) iorq->dbuf; 1336 if (iorq->dbuf == NULL) { 1337 iopb->dataa = 0; 1338 iopb->datar = 0; 1339 } else { 1340 iopb->dataa = (dp & 0xffff); 1341 iopb->datar = ((dp & 0xff0000) >> 16); 1342 } 1343 iopb->subfn = subfun; 1344 } 1345 1346 1347 /* 1348 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1349 */ 1350 1351 int 1352 xyc_unbusy(struct xyc *xyc, int del) 1353 { 1354 while (del-- > 0) { 1355 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1356 break; 1357 DELAY(1); 1358 } 1359 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1360 } 1361 1362 /* 1363 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1364 * note that NORM requests are handled separately. 1365 */ 1366 int 1367 xyc_cmd(struct xyc_softc *xycsc, int cmd, int subfn, int unit, int block, 1368 int scnt, char *dptr, int fullmode) 1369 { 1370 int submode = XY_STATE(fullmode); 1371 struct xy_iorq *iorq = xycsc->ciorq; 1372 struct xy_iopb *iopb = xycsc->ciopb; 1373 1374 /* 1375 * is someone else using the control iopq wait for it if we can 1376 */ 1377 start: 1378 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1379 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1380 return(XY_ERR_FAIL); 1381 goto start; 1382 } 1383 1384 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1385 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1386 iorq->mode = XY_SUB_FREE; 1387 printf("%s: stole control iopb\n", device_xname(xycsc->sc_dev)); 1388 } 1389 1390 /* init iorq/iopb */ 1391 1392 xyc_rqinit(iorq, xycsc, 1393 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1394 fullmode, block, scnt, dptr, NULL); 1395 1396 /* load IOPB from iorq */ 1397 1398 xyc_rqtopb(iorq, iopb, cmd, subfn); 1399 1400 /* submit it for processing */ 1401 1402 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1403 1404 return(XY_ERR_AOK); 1405 } 1406 1407 /* 1408 * xyc_startbuf 1409 * start a buffer for running 1410 */ 1411 1412 int 1413 xyc_startbuf(struct xyc_softc *xycsc, struct xy_softc *xysc, struct buf *bp) 1414 { 1415 #ifdef XYC_DEBUG 1416 int partno; 1417 #endif 1418 int error; 1419 struct xy_iorq *iorq; 1420 struct xy_iopb *iopb; 1421 u_long block; 1422 1423 iorq = xysc->xyrq; 1424 iopb = iorq->iopb; 1425 1426 /* get buf */ 1427 1428 if (bp == NULL) 1429 panic("xyc_startbuf null buf"); 1430 1431 #ifdef XYC_DEBUG 1432 partno = DISKPART(bp->b_dev); 1433 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(xysc->sc_dev), 1434 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1435 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1436 bp->b_bcount, bp->b_data); 1437 #endif 1438 1439 /* 1440 * load request. 1441 * 1442 * note that iorq points to the buffer as mapped into DVMA space, 1443 * where as the bp->b_data points to its non-DVMA mapping. 1444 */ 1445 1446 block = bp->b_rawblkno; 1447 1448 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1449 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1450 if (error != 0) { 1451 aprint_error_dev(xycsc->sc_dev, "warning: cannot load DMA map\n"); 1452 return (XY_ERR_FAIL); /* XXX: need some sort of 1453 * call-back scheme here? */ 1454 } 1455 1456 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1457 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1458 ? BUS_DMASYNC_PREREAD 1459 : BUS_DMASYNC_PREWRITE); 1460 1461 /* init iorq and load iopb from it */ 1462 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1463 bp->b_bcount / XYFM_BPS, 1464 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1465 bp); 1466 1467 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1468 1469 /* Instrumentation. */ 1470 disk_busy(&xysc->sc_dk); 1471 1472 return (XY_ERR_AOK); 1473 } 1474 1475 1476 /* 1477 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1478 * if ok. if it fail returns an error code. type is XY_SUB_*. 1479 * 1480 * note: caller frees iorq in all cases except NORM 1481 * 1482 * return value: 1483 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1484 * WAIT: XY_AOK (success), <error-code> (failed) 1485 * POLL: <same as WAIT> 1486 * NOQ : <same as NORM> 1487 * 1488 * there are three sources for i/o requests: 1489 * [1] xystrategy: normal block I/O, using "struct buf" system. 1490 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1491 * [3] open/ioctl: these are I/O requests done in the context of a process, 1492 * and the process should block until they are done. 1493 * 1494 * software state is stored in the iorq structure. each iorq has an 1495 * iopb structure. the hardware understands the iopb structure. 1496 * every command must go through an iopb. a 450 handles one iopb at a 1497 * time, where as a 451 can take them in chains. [the 450 claims it 1498 * can handle chains, but is appears to be buggy...] iopb are allocated 1499 * in DVMA space at boot up time. each disk gets one iopb, and the 1500 * controller gets one (for POLL and WAIT commands). what happens if 1501 * the iopb is busy? for i/o type [1], the buffers are queued at the 1502 * "buff" layer and * picked up later by the interrupt routine. for case 1503 * [2] we can only be blocked if there is a WAIT type I/O request being 1504 * run. since this can only happen when we are crashing, we wait a sec 1505 * and then steal the IOPB. for case [3] the process can sleep 1506 * on the iorq free list until some iopbs are available. 1507 */ 1508 1509 1510 int 1511 xyc_submit_iorq(struct xyc_softc *xycsc, struct xy_iorq *iorq, int type) 1512 { 1513 struct xy_iopb *dmaiopb; 1514 1515 #ifdef XYC_DEBUG 1516 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1517 device_xname(xycsc->sc_dev), iorq, type); 1518 #endif 1519 1520 /* first check and see if controller is busy */ 1521 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1522 #ifdef XYC_DEBUG 1523 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1524 #endif 1525 if (type == XY_SUB_NOQ) 1526 return (XY_ERR_FAIL); /* failed */ 1527 switch (type) { 1528 case XY_SUB_NORM: 1529 return XY_ERR_AOK; /* success */ 1530 case XY_SUB_WAIT: 1531 while (iorq->iopb->done == 0) { 1532 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1533 } 1534 return (iorq->errnum); 1535 case XY_SUB_POLL: /* steal controller */ 1536 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1537 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1538 panic("xyc_submit_iorq: stuck xyc"); 1539 printf("%s: stole controller\n", 1540 device_xname(xycsc->sc_dev)); 1541 break; 1542 default: 1543 panic("xyc_submit_iorq adding"); 1544 } 1545 } 1546 1547 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1548 if (dmaiopb == NULL) { /* nothing doing? */ 1549 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1550 return(XY_ERR_AOK); 1551 panic("xyc_submit_iorq: xyc_chain failed!"); 1552 } 1553 1554 XYC_GO(xycsc->xyc, dmaiopb); 1555 1556 /* command now running, wrap it up */ 1557 switch (type) { 1558 case XY_SUB_NORM: 1559 case XY_SUB_NOQ: 1560 return (XY_ERR_AOK); /* success */ 1561 case XY_SUB_WAIT: 1562 while (iorq->iopb->done == 0) { 1563 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1564 } 1565 return (iorq->errnum); 1566 case XY_SUB_POLL: 1567 return (xyc_piodriver(xycsc, iorq)); 1568 default: 1569 panic("xyc_submit_iorq wrap up"); 1570 } 1571 panic("xyc_submit_iorq"); 1572 return 0; /* not reached */ 1573 } 1574 1575 1576 /* 1577 * xyc_chain: build a chain. return dvma address of first element in 1578 * the chain. iorq != NULL: means we only want that item on the chain. 1579 */ 1580 1581 struct xy_iopb * 1582 xyc_chain(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1583 { 1584 int togo, chain, hand; 1585 1586 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1587 1588 /* 1589 * promote control IOPB to the top 1590 */ 1591 if (iorq == NULL) { 1592 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1593 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1594 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1595 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1596 } 1597 1598 /* 1599 * special case: if iorq != NULL then we have a POLL or WAIT request. 1600 * we let these take priority and do them first. 1601 */ 1602 if (iorq) { 1603 xycsc->xy_chain[0] = iorq; 1604 iorq->iopb->chen = 0; 1605 return(iorq->dmaiopb); 1606 } 1607 1608 /* 1609 * NORM case: do round robin and maybe chain (if allowed and possible) 1610 */ 1611 chain = 0; 1612 hand = xycsc->xy_hand; 1613 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1614 1615 for (togo = XYC_MAXIOPB; togo > 0; 1616 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1617 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1618 1619 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1620 xycsc->iopbase[hand].done) 1621 continue; /* not ready-for-i/o */ 1622 1623 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1624 iopb = xycsc->xy_chain[chain]->iopb; 1625 iopb->chen = 0; 1626 if (chain != 0) { 1627 /* adding a link to a chain */ 1628 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1629 prev_iopb->chen = 1; 1630 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1631 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1632 } else { 1633 /* head of chain */ 1634 iorq = xycsc->xy_chain[chain]; 1635 } 1636 chain++; 1637 1638 /* quit if chaining dis-allowed */ 1639 if (xycsc->no_ols) 1640 break; 1641 } 1642 1643 return(iorq ? iorq->dmaiopb : NULL); 1644 } 1645 1646 /* 1647 * xyc_piodriver 1648 * 1649 * programmed i/o driver. this function takes over the computer 1650 * and drains off the polled i/o request. it returns the status of the iorq 1651 * the caller is interesting in. 1652 */ 1653 int 1654 xyc_piodriver(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1655 { 1656 int nreset = 0; 1657 int retval = 0; 1658 u_long res; 1659 #ifdef XYC_DEBUG 1660 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(xycsc->sc_dev), iorq); 1661 #endif 1662 1663 while (iorq->iopb->done == 0) { 1664 1665 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1666 1667 /* we expect some progress soon */ 1668 if (res == XY_ERR_FAIL && nreset >= 2) { 1669 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1670 #ifdef XYC_DEBUG 1671 printf("xyc_piodriver: timeout\n"); 1672 #endif 1673 return (XY_ERR_FAIL); 1674 } 1675 if (res == XY_ERR_FAIL) { 1676 if (xyc_reset(xycsc, 0, 1677 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1678 XY_ERR_FAIL, 1679 0) == XY_ERR_FAIL) 1680 return (XY_ERR_FAIL); /* flushes all but POLL 1681 * requests, resets */ 1682 continue; 1683 } 1684 1685 xyc_remove_iorq(xycsc); /* may resubmit request */ 1686 1687 if (iorq->iopb->done == 0) 1688 xyc_start(xycsc, iorq); 1689 } 1690 1691 /* get return value */ 1692 1693 retval = iorq->errnum; 1694 1695 #ifdef XYC_DEBUG 1696 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1697 iorq->errnum, xyc_e2str(iorq->errnum)); 1698 #endif 1699 1700 /* start up any bufs that have queued */ 1701 1702 xyc_start(xycsc, NULL); 1703 1704 return (retval); 1705 } 1706 1707 /* 1708 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1709 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1710 */ 1711 void 1712 xyc_xyreset(struct xyc_softc *xycsc, struct xy_softc *xysc) 1713 { 1714 struct xy_iopb tmpiopb; 1715 struct xy_iopb *iopb; 1716 int del; 1717 1718 iopb = xycsc->ciopb; 1719 1720 /* Save contents */ 1721 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1722 1723 iopb->chen = iopb->done = iopb->errs = 0; 1724 iopb->ien = 0; 1725 iopb->com = XYCMD_RST; 1726 iopb->unit = xysc->xy_drive; 1727 1728 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1729 1730 del = XYC_RESETUSEC; 1731 while (del > 0) { 1732 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1733 break; 1734 DELAY(1); 1735 del--; 1736 } 1737 1738 if (del <= 0 || iopb->errs) { 1739 printf("%s: off-line: %s\n", device_xname(xycsc->sc_dev), 1740 xyc_e2str(iopb->errnum)); 1741 del = xycsc->xyc->xyc_rsetup; 1742 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1743 panic("xyc_reset"); 1744 } else { 1745 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1746 } 1747 1748 /* Restore contents */ 1749 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1750 } 1751 1752 1753 /* 1754 * xyc_reset: reset everything: requests are marked as errors except 1755 * a polled request (which is resubmitted) 1756 */ 1757 int 1758 xyc_reset(struct xyc_softc *xycsc, int quiet, struct xy_iorq *blastmode, 1759 int error, struct xy_softc *xysc) 1760 { 1761 int del = 0, lcv, retval = XY_ERR_AOK; 1762 1763 /* soft reset hardware */ 1764 1765 if (!quiet) 1766 printf("%s: soft reset\n", device_xname(xycsc->sc_dev)); 1767 del = xycsc->xyc->xyc_rsetup; 1768 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1769 if (del == XY_ERR_FAIL) { 1770 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1771 retval = XY_ERR_FAIL; 1772 } 1773 if (xysc) 1774 xyc_xyreset(xycsc, xysc); 1775 1776 /* fix queues based on "blast-mode" */ 1777 1778 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1779 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1780 1781 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1782 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1783 XY_STATE(iorq->mode) != XY_SUB_NORM) 1784 /* is it active? */ 1785 continue; 1786 1787 if (blastmode == XY_RSET_ALL || 1788 blastmode != iorq) { 1789 /* failed */ 1790 iorq->errnum = error; 1791 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1792 switch (XY_STATE(iorq->mode)) { 1793 case XY_SUB_NORM: 1794 iorq->buf->b_error = EIO; 1795 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1796 1797 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1798 iorq->dmamap->dm_mapsize, 1799 (iorq->buf->b_flags & B_READ) 1800 ? BUS_DMASYNC_POSTREAD 1801 : BUS_DMASYNC_POSTWRITE); 1802 1803 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1804 1805 (void)bufq_get(iorq->xy->xyq); 1806 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1807 (xycsc->reqs[lcv].buf->b_bcount - 1808 xycsc->reqs[lcv].buf->b_resid), 1809 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1810 biodone(iorq->buf); 1811 iorq->mode = XY_SUB_FREE; 1812 break; 1813 case XY_SUB_WAIT: 1814 wakeup(iorq); 1815 case XY_SUB_POLL: 1816 iorq->mode = 1817 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1818 break; 1819 } 1820 1821 } else { 1822 1823 /* resubmit, no need to do anything here */ 1824 } 1825 } 1826 1827 /* 1828 * now, if stuff is waiting, start it. 1829 * since we just reset it should go 1830 */ 1831 xyc_start(xycsc, NULL); 1832 1833 return (retval); 1834 } 1835 1836 /* 1837 * xyc_start: start waiting buffers 1838 */ 1839 1840 void 1841 xyc_start(struct xyc_softc *xycsc, struct xy_iorq *iorq) 1842 { 1843 int lcv; 1844 struct xy_softc *xy; 1845 1846 if (iorq == NULL) { 1847 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1848 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1849 if (bufq_peek(xy->xyq) == NULL) continue; 1850 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1851 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1852 } 1853 } 1854 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1855 } 1856 1857 /* 1858 * xyc_remove_iorq: remove "done" IOPB's. 1859 */ 1860 1861 int 1862 xyc_remove_iorq(struct xyc_softc *xycsc) 1863 { 1864 int errnum, rq, comm, errs; 1865 struct xyc *xyc = xycsc->xyc; 1866 u_long addr; 1867 struct xy_iopb *iopb; 1868 struct xy_iorq *iorq; 1869 struct buf *bp; 1870 1871 if (xyc->xyc_csr & XYC_DERR) { 1872 /* 1873 * DOUBLE ERROR: should never happen under normal use. This 1874 * error is so bad, you can't even tell which IOPB is bad, so 1875 * we dump them all. 1876 */ 1877 errnum = XY_ERR_DERR; 1878 aprint_error_dev(xycsc->sc_dev, "DOUBLE ERROR!\n"); 1879 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1880 aprint_error_dev(xycsc->sc_dev, "soft reset failed!\n"); 1881 panic("xyc_remove_iorq: controller DEAD"); 1882 } 1883 return (XY_ERR_AOK); 1884 } 1885 1886 /* 1887 * get iopb that is done, loop down the chain 1888 */ 1889 1890 if (xyc->xyc_csr & XYC_ERR) { 1891 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1892 } 1893 if (xyc->xyc_csr & XYC_IPND) { 1894 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1895 } 1896 1897 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1898 iorq = xycsc->xy_chain[rq]; 1899 if (iorq == NULL) break; /* done ! */ 1900 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1901 continue; /* free, or done */ 1902 iopb = iorq->iopb; 1903 if (iopb->done == 0) 1904 continue; /* not done yet */ 1905 1906 comm = iopb->com; 1907 errs = iopb->errs; 1908 1909 if (errs) 1910 iorq->errnum = iopb->errnum; 1911 else 1912 iorq->errnum = 0; 1913 1914 /* handle non-fatal errors */ 1915 1916 if (errs && 1917 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1918 continue; /* AOK: we resubmitted it */ 1919 1920 1921 /* this iorq is now done (hasn't been restarted or anything) */ 1922 1923 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1924 xyc_perror(iorq, iopb, 0); 1925 1926 /* now, if read/write check to make sure we got all the data 1927 * we needed. (this may not be the case if we got an error in 1928 * the middle of a multisector request). */ 1929 1930 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1931 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1932 /* we just successfully processed a bad144 sector 1933 * note: if we are in bad 144 mode, the pointers have 1934 * been advanced already (see above) and are pointing 1935 * at the bad144 sector. to exit bad144 mode, we 1936 * must advance the pointers 1 sector and issue a new 1937 * request if there are still sectors left to process 1938 * 1939 */ 1940 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1941 1942 /* exit b144 mode */ 1943 iorq->mode = iorq->mode & (~XY_MODE_B144); 1944 1945 if (iorq->sectcnt) { /* more to go! */ 1946 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1947 iopb->errs = iopb->done = 0; 1948 iorq->tries = 0; 1949 iopb->scnt = iorq->sectcnt; 1950 iopb->cyl = iorq->blockno / 1951 iorq->xy->sectpercyl; 1952 iopb->head = 1953 (iorq->blockno / iorq->xy->nhead) % 1954 iorq->xy->nhead; 1955 iopb->sect = iorq->blockno % XYFM_BPS; 1956 addr = (u_long) iorq->dbuf; 1957 iopb->dataa = (addr & 0xffff); 1958 iopb->datar = ((addr & 0xff0000) >> 16); 1959 /* will resubit at end */ 1960 continue; 1961 } 1962 } 1963 /* final cleanup, totally done with this request */ 1964 1965 switch (XY_STATE(iorq->mode)) { 1966 case XY_SUB_NORM: 1967 bp = iorq->buf; 1968 if (errs) { 1969 bp->b_error = EIO; 1970 bp->b_resid = iorq->sectcnt * XYFM_BPS; 1971 } else { 1972 bp->b_resid = 0; /* done */ 1973 } 1974 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1975 iorq->dmamap->dm_mapsize, 1976 (iorq->buf->b_flags & B_READ) 1977 ? BUS_DMASYNC_POSTREAD 1978 : BUS_DMASYNC_POSTWRITE); 1979 1980 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1981 1982 (void)bufq_get(iorq->xy->xyq); 1983 disk_unbusy(&iorq->xy->sc_dk, 1984 (bp->b_bcount - bp->b_resid), 1985 (bp->b_flags & B_READ)); 1986 iorq->mode = XY_SUB_FREE; 1987 biodone(bp); 1988 break; 1989 case XY_SUB_WAIT: 1990 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1991 wakeup(iorq); 1992 break; 1993 case XY_SUB_POLL: 1994 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1995 break; 1996 } 1997 } 1998 1999 return (XY_ERR_AOK); 2000 } 2001 2002 /* 2003 * xyc_perror: print error. 2004 * - if still_trying is true: we got an error, retried and got a 2005 * different error. in that case lasterror is the old error, 2006 * and errnum is the new one. 2007 * - if still_trying is not true, then if we ever had an error it 2008 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2009 * from that error (otherwise iorq->errnum == iorq->lasterror). 2010 */ 2011 void 2012 xyc_perror(struct xy_iorq *iorq, struct xy_iopb *iopb, int still_trying) 2013 { 2014 2015 int error = iorq->lasterror; 2016 2017 printf("%s", (iorq->xy) ? device_xname(iorq->xy->sc_dev) 2018 : device_xname(iorq->xyc->sc_dev)); 2019 if (iorq->buf) 2020 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2021 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2022 printf("%s %d/%d/%d: ", 2023 (iopb->com == XYCMD_RD) ? "read" : "write", 2024 iopb->cyl, iopb->head, iopb->sect); 2025 printf("%s", xyc_e2str(error)); 2026 2027 if (still_trying) 2028 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2029 else 2030 if (iorq->errnum == 0) 2031 printf(" [recovered in %d tries]", iorq->tries); 2032 2033 printf("\n"); 2034 } 2035 2036 /* 2037 * xyc_error: non-fatal error encountered... recover. 2038 * return AOK if resubmitted, return FAIL if this iopb is done 2039 */ 2040 int 2041 xyc_error(struct xyc_softc *xycsc, struct xy_iorq *iorq, struct xy_iopb *iopb, 2042 int comm) 2043 { 2044 int errnum = iorq->errnum; 2045 int erract = xyc_entoact(errnum); 2046 int oldmode, advance; 2047 #ifdef __sparc__ 2048 int i; 2049 #endif 2050 2051 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2052 oldmode = iorq->mode; 2053 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2054 /* make xyc_start ignore us */ 2055 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2056 iorq->mode = oldmode; 2057 } 2058 /* check for read/write to a sector in bad144 table if bad: redirect 2059 * request to bad144 area */ 2060 2061 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2062 (iorq->mode & XY_MODE_B144) == 0) { 2063 advance = iorq->sectcnt - iopb->scnt; 2064 XYC_ADVANCE(iorq, advance); 2065 #ifdef __sparc__ 2066 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2067 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2068 iorq->blockno % iorq->xy->nsect)) != -1) { 2069 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2070 * redirect */ 2071 iopb->errnum = iopb->done = iopb->errs = 0; 2072 iopb->scnt = 1; 2073 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2074 /* second to last acyl */ 2075 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2076 * standard */ 2077 iopb->head = i / iorq->xy->nhead; 2078 iopb->sect = i % iorq->xy->nhead; 2079 /* will resubmit when we come out of remove_iorq */ 2080 return (XY_ERR_AOK); /* recovered! */ 2081 } 2082 #endif 2083 } 2084 2085 /* 2086 * it isn't a bad144 sector, must be real error! see if we can retry 2087 * it? 2088 */ 2089 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2090 xyc_perror(iorq, iopb, 1); /* inform of error state 2091 * change */ 2092 iorq->lasterror = errnum; 2093 2094 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2095 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2096 iorq->tries++; 2097 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2098 /* will resubmit at end of remove_iorq */ 2099 return (XY_ERR_AOK); /* recovered! */ 2100 } 2101 2102 /* failed to recover from this error */ 2103 return (XY_ERR_FAIL); 2104 } 2105 2106 /* 2107 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2108 */ 2109 void 2110 xyc_tick(void *arg) 2111 { 2112 struct xyc_softc *xycsc = arg; 2113 int lcv, s, reset = 0; 2114 2115 /* reduce ttl for each request if one goes to zero, reset xyc */ 2116 s = splbio(); 2117 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2118 if (xycsc->reqs[lcv].mode == 0 || 2119 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2120 continue; 2121 xycsc->reqs[lcv].ttl--; 2122 if (xycsc->reqs[lcv].ttl == 0) 2123 reset = 1; 2124 } 2125 if (reset) { 2126 printf("%s: watchdog timeout\n", device_xname(xycsc->sc_dev)); 2127 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2128 } 2129 splx(s); 2130 2131 /* until next time */ 2132 2133 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2134 } 2135 2136 /* 2137 * xyc_ioctlcmd: this function provides a user level interface to the 2138 * controller via ioctl. this allows "format" programs to be written 2139 * in user code, and is also useful for some debugging. we return 2140 * an error code. called at user priority. 2141 * 2142 * XXX missing a few commands (see the 7053 driver for ideas) 2143 */ 2144 int 2145 xyc_ioctlcmd(struct xy_softc *xy, dev_t dev, struct xd_iocmd *xio) 2146 { 2147 int s, rqno, dummy = 0; 2148 char *dvmabuf = NULL, *buf = NULL; 2149 struct xyc_softc *xycsc; 2150 int rseg, error; 2151 bus_dma_segment_t seg; 2152 2153 /* check sanity of requested command */ 2154 2155 switch (xio->cmd) { 2156 2157 case XYCMD_NOP: /* no op: everything should be zero */ 2158 if (xio->subfn || xio->dptr || xio->dlen || 2159 xio->block || xio->sectcnt) 2160 return (EINVAL); 2161 break; 2162 2163 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2164 case XYCMD_WR: 2165 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2166 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2167 return (EINVAL); 2168 break; 2169 2170 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2171 return (EINVAL); 2172 2173 break; 2174 2175 default: 2176 return (EINVAL);/* ??? */ 2177 } 2178 2179 xycsc = xy->parent; 2180 2181 /* create DVMA buffer for request if needed */ 2182 if (xio->dlen) { 2183 bus_addr_t busbuf; 2184 2185 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2186 &seg, &rseg, 2187 xio->dlen, (void **)&buf, 2188 &busbuf)) != 0) { 2189 return (error); 2190 } 2191 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2192 2193 if (xio->cmd == XYCMD_WR) { 2194 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2195 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2196 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2197 return (error); 2198 } 2199 } 2200 } 2201 /* do it! */ 2202 2203 error = 0; 2204 s = splbio(); 2205 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2206 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2207 if (rqno == XY_ERR_FAIL) { 2208 error = EIO; 2209 goto done; 2210 } 2211 xio->errnum = xycsc->ciorq->errnum; 2212 xio->tries = xycsc->ciorq->tries; 2213 XYC_DONE(xycsc, dummy); 2214 2215 if (xio->cmd == XYCMD_RD) 2216 error = copyout(buf, xio->dptr, xio->dlen); 2217 2218 done: 2219 splx(s); 2220 if (dvmabuf) { 2221 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2222 xio->dlen, buf); 2223 } 2224 return (error); 2225 } 2226 2227 /* 2228 * xyc_e2str: convert error code number into an error string 2229 */ 2230 const char * 2231 xyc_e2str(int no) 2232 { 2233 switch (no) { 2234 case XY_ERR_FAIL: 2235 return ("Software fatal error"); 2236 case XY_ERR_DERR: 2237 return ("DOUBLE ERROR"); 2238 case XY_ERR_AOK: 2239 return ("Successful completion"); 2240 case XY_ERR_IPEN: 2241 return("Interrupt pending"); 2242 case XY_ERR_BCFL: 2243 return("Busy conflict"); 2244 case XY_ERR_TIMO: 2245 return("Operation timeout"); 2246 case XY_ERR_NHDR: 2247 return("Header not found"); 2248 case XY_ERR_HARD: 2249 return("Hard ECC error"); 2250 case XY_ERR_ICYL: 2251 return("Illegal cylinder address"); 2252 case XY_ERR_ISEC: 2253 return("Illegal sector address"); 2254 case XY_ERR_SMAL: 2255 return("Last sector too small"); 2256 case XY_ERR_SACK: 2257 return("Slave ACK error (non-existent memory)"); 2258 case XY_ERR_CHER: 2259 return("Cylinder and head/header error"); 2260 case XY_ERR_SRTR: 2261 return("Auto-seek retry successful"); 2262 case XY_ERR_WPRO: 2263 return("Write-protect error"); 2264 case XY_ERR_UIMP: 2265 return("Unimplemented command"); 2266 case XY_ERR_DNRY: 2267 return("Drive not ready"); 2268 case XY_ERR_SZER: 2269 return("Sector count zero"); 2270 case XY_ERR_DFLT: 2271 return("Drive faulted"); 2272 case XY_ERR_ISSZ: 2273 return("Illegal sector size"); 2274 case XY_ERR_SLTA: 2275 return("Self test A"); 2276 case XY_ERR_SLTB: 2277 return("Self test B"); 2278 case XY_ERR_SLTC: 2279 return("Self test C"); 2280 case XY_ERR_SOFT: 2281 return("Soft ECC error"); 2282 case XY_ERR_SFOK: 2283 return("Soft ECC error recovered"); 2284 case XY_ERR_IHED: 2285 return("Illegal head"); 2286 case XY_ERR_DSEQ: 2287 return("Disk sequencer error"); 2288 case XY_ERR_SEEK: 2289 return("Seek error"); 2290 default: 2291 return ("Unknown error"); 2292 } 2293 } 2294 2295 int 2296 xyc_entoact(int errnum) 2297 { 2298 switch (errnum) { 2299 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2300 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2301 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2302 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2303 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2304 2305 return(XY_ERA_PROG); /* program error ! */ 2306 2307 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2308 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2309 case XY_ERR_SOFT: 2310 2311 return(XY_ERA_HARD); /* hard error, retry */ 2312 2313 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2314 2315 return(XY_ERA_RSET); /* hard error reset */ 2316 2317 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2318 2319 return(XY_ERA_SOFT); /* an FYI error */ 2320 2321 case XY_ERR_WPRO: 2322 2323 return(XY_ERA_WPRO); /* write protect */ 2324 } 2325 2326 return(XY_ERA_PROG); /* ??? */ 2327 } 2328
Indexes created Tue Sep 30 11:09:46 GMT 2025