xy.c revision 1.91
1 /* $NetBSD: xy.c,v 1.91 2011/02/01 19:36:24 chuck 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 1.91 2011/02/01 19:36:24 chuck Exp $"); 49 50 #undef XYC_DEBUG /* full debug */ 51 #undef XYC_DIAG /* extra sanity checks */ 52 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 53 #define XYC_DIAG /* link in with master DIAG option */ 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/proc.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/dkbad.h> 72 #include <sys/conf.h> 73 #include <sys/kauth.h> 74 75 #include <sys/bus.h> 76 #include <sys/intr.h> 77 78 #if defined(__sparc__) || defined(sun3) 79 #include <dev/sun/disklabel.h> 80 #endif 81 82 #include <dev/vme/vmereg.h> 83 #include <dev/vme/vmevar.h> 84 85 #include <dev/vme/xyreg.h> 86 #include <dev/vme/xyvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 97 */ 98 #define XYC_GO(XYC, ADDR) { \ 99 u_long addr = (u_long)ADDR; \ 100 (XYC)->xyc_addr_lo = ((addr) & 0xff); \ 101 (addr) = ((addr) >> 8); \ 102 (XYC)->xyc_addr_hi = ((addr) & 0xff); \ 103 (addr) = ((addr) >> 8); \ 104 (XYC)->xyc_reloc_lo = ((addr) & 0xff); \ 105 (addr) = ((addr) >> 8); \ 106 (XYC)->xyc_reloc_hi = (addr); \ 107 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 108 } 109 110 /* 111 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 112 */ 113 114 #define XYC_DONE(SC,ER) { \ 115 if ((ER) == XY_ERR_AOK) { \ 116 (ER) = (SC)->ciorq->errnum; \ 117 (SC)->ciorq->mode = XY_SUB_FREE; \ 118 wakeup((SC)->ciorq); \ 119 } \ 120 } 121 122 /* 123 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 124 */ 125 126 #define XYC_ADVANCE(IORQ, N) { \ 127 if (N) { \ 128 (IORQ)->sectcnt -= (N); \ 129 (IORQ)->blockno += (N); \ 130 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 131 } \ 132 } 133 134 /* 135 * note - addresses you can sleep on: 136 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 137 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 138 */ 139 140 141 /* 142 * function prototypes 143 * "xyc_*" functions are internal, all others are external interfaces 144 */ 145 146 extern int pil_to_vme[]; /* from obio.c */ 147 148 /* internals */ 149 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 150 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 151 const char *xyc_e2str(int); 152 int xyc_entoact(int); 153 int xyc_error(struct xyc_softc *, struct xy_iorq *, 154 struct xy_iopb *, int); 155 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 156 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 157 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 158 int xyc_remove_iorq(struct xyc_softc *); 159 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 160 struct xy_softc *); 161 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, 162 struct xy_softc *, int, u_long, int, 163 void *, struct buf *); 164 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 165 void xyc_start(struct xyc_softc *, struct xy_iorq *); 166 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 167 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 168 void xyc_tick(void *); 169 int xyc_unbusy(struct xyc *, int); 170 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 171 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 172 int *, bus_size_t, void **, bus_addr_t *); 173 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 174 int, bus_size_t, void *); 175 176 /* machine interrupt hook */ 177 int xycintr(void *); 178 179 /* autoconf */ 180 int xycmatch(device_t, cfdata_t, void *); 181 void xycattach(device_t, device_t, void *); 182 int xymatch(device_t, cfdata_t, void *); 183 void xyattach(device_t, device_t, void *); 184 static int xyc_probe(void *, bus_space_tag_t, bus_space_handle_t); 185 186 static void xydummystrat(struct buf *); 187 int xygetdisklabel(struct xy_softc *, void *); 188 189 /* 190 * cfattach's: device driver interface to autoconfig 191 */ 192 193 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 194 xycmatch, xycattach, NULL, NULL); 195 196 CFATTACH_DECL(xy, sizeof(struct xy_softc), 197 xymatch, xyattach, NULL, NULL); 198 199 extern struct cfdriver xy_cd; 200 201 dev_type_open(xyopen); 202 dev_type_close(xyclose); 203 dev_type_read(xyread); 204 dev_type_write(xywrite); 205 dev_type_ioctl(xyioctl); 206 dev_type_strategy(xystrategy); 207 dev_type_dump(xydump); 208 dev_type_size(xysize); 209 210 const struct bdevsw xy_bdevsw = { 211 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 212 }; 213 214 const struct cdevsw xy_cdevsw = { 215 xyopen, xyclose, xyread, xywrite, xyioctl, 216 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 217 }; 218 219 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 220 int driveno; /* unit number */ 221 int fullmode; /* submit mode */ 222 int booting; /* are we booting or not? */ 223 }; 224 225 /* 226 * dkdriver 227 */ 228 229 struct dkdriver xydkdriver = { xystrategy }; 230 231 /* 232 * start: disk label fix code (XXX) 233 */ 234 235 static void *xy_labeldata; 236 237 static void 238 xydummystrat(struct buf *bp) 239 { 240 if (bp->b_bcount != XYFM_BPS) 241 panic("xydummystrat"); 242 memcpy(bp->b_data, xy_labeldata, XYFM_BPS); 243 bp->b_oflags |= BO_DONE; 244 bp->b_cflags &= ~BC_BUSY; 245 } 246 247 int 248 xygetdisklabel(struct xy_softc *xy, void *b) 249 { 250 const char *err; 251 #if defined(__sparc__) || defined(sun3) 252 struct sun_disklabel *sdl; 253 #endif 254 255 /* We already have the label data in `b'; setup for dummy strategy */ 256 xy_labeldata = b; 257 258 /* Required parameter for readdisklabel() */ 259 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 260 261 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xy->sc_dev), RAW_PART), 262 xydummystrat, 263 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 264 if (err) { 265 printf("%s: %s\n", device_xname(&xy->sc_dev), err); 266 return(XY_ERR_FAIL); 267 } 268 269 #if defined(__sparc__) || defined(sun3) 270 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 271 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 272 if (sdl->sl_magic == SUN_DKMAGIC) { 273 xy->pcyl = sdl->sl_pcylinders; 274 } else 275 #endif 276 { 277 printf("%s: WARNING: no `pcyl' in disk label.\n", 278 device_xname(&xy->sc_dev)); 279 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 280 xy->sc_dk.dk_label->d_acylinders; 281 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 282 device_xname(&xy->sc_dev), xy->pcyl); 283 } 284 285 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 286 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 287 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 288 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 289 xy->sectpercyl = xy->nhead * xy->nsect; 290 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 291 * sun->bsd */ 292 return(XY_ERR_AOK); 293 } 294 295 /* 296 * end: disk label fix code (XXX) 297 */ 298 299 /* 300 * Shorthand for allocating, mapping and loading a DMA buffer 301 */ 302 int 303 xy_dmamem_alloc(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int *nsegp, bus_size_t len, void * *kvap, bus_addr_t *dmap) 304 { 305 int nseg; 306 int error; 307 308 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 309 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 310 return (error); 311 } 312 313 if ((error = bus_dmamem_map(tag, seg, nseg, 314 len, kvap, 315 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 316 bus_dmamem_free(tag, seg, nseg); 317 return (error); 318 } 319 320 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 321 BUS_DMA_NOWAIT)) != 0) { 322 bus_dmamem_unmap(tag, *kvap, len); 323 bus_dmamem_free(tag, seg, nseg); 324 return (error); 325 } 326 327 *dmap = map->dm_segs[0].ds_addr; 328 *nsegp = nseg; 329 return (0); 330 } 331 332 void 333 xy_dmamem_free(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int nseg, bus_size_t len, void * kva) 334 { 335 336 bus_dmamap_unload(tag, map); 337 bus_dmamem_unmap(tag, kva, len); 338 bus_dmamem_free(tag, seg, nseg); 339 } 340 341 342 /* 343 * a u t o c o n f i g f u n c t i o n s 344 */ 345 346 /* 347 * xycmatch: determine if xyc is present or not. we do a 348 * soft reset to detect the xyc. 349 */ 350 int 351 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 352 { 353 struct xyc *xyc = (void *)handle; /* XXX */ 354 355 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 356 } 357 358 int xycmatch(parent, cf, aux) 359 device_t parent; 360 cfdata_t cf; 361 void *aux; 362 { 363 struct vme_attach_args *va = aux; 364 vme_chipset_tag_t ct = va->va_vct; 365 vme_am_t mod; 366 int error; 367 368 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 369 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 370 return (0); 371 372 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 373 mod, VME_D16, xyc_probe, 0); 374 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 375 376 return (error == 0); 377 } 378 379 /* 380 * xycattach: attach controller 381 */ 382 void 383 xycattach(device_t parent, device_t self, void *aux) 384 { 385 struct xyc_softc *xyc = device_private(self); 386 struct vme_attach_args *va = aux; 387 vme_chipset_tag_t ct = va->va_vct; 388 bus_space_tag_t bt; 389 bus_space_handle_t bh; 390 vme_intr_handle_t ih; 391 vme_am_t mod; 392 struct xyc_attach_args xa; 393 int lcv, res, error; 394 bus_dma_segment_t seg; 395 int rseg; 396 vme_mapresc_t resc; 397 bus_addr_t busaddr; 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] = (struct xy_softc *) 0; 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 /* 606 * Always re-initialize the disk structure. We want statistics 607 * to start with a clean slate. 608 */ 609 memset(&xy->sc_dk, 0, sizeof(xy->sc_dk)); 610 611 /* if booting, init the xy_softc */ 612 613 if (xa->booting) { 614 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 615 xy->flags = 0; 616 xy->parent = xyc; 617 618 /* init queue of waiting bufs */ 619 620 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 621 622 xy->xyrq = &xyc->reqs[xa->driveno]; 623 624 } 625 xy->xy_drive = xa->driveno; 626 fmode = xa->fullmode; 627 xyc->sc_drives[xa->driveno] = xy; 628 629 /* if not booting, make sure we are the only process in the attach for 630 * this drive. if locked out, sleep on it. */ 631 632 if (!xa->booting) { 633 s = splbio(); 634 while (xy->state == XY_DRIVE_ATTACHING) { 635 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 636 splx(s); 637 return; 638 } 639 } 640 printf("%s at %s", 641 device_xname(&xy->sc_dev), device_xname(&xy->parent->sc_dev)); 642 } 643 644 /* we now have control */ 645 xy->state = XY_DRIVE_ATTACHING; 646 newstate = XY_DRIVE_UNKNOWN; 647 648 buf = NULL; 649 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 650 XYFM_BPS, 651 (void **)&buf, 652 &busaddr)) != 0) { 653 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 654 error); 655 return; 656 } 657 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 658 659 /* first try and reset the drive */ 660 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 661 XYC_DONE(xyc, error); 662 if (error == XY_ERR_DNRY) { 663 printf(" drive %d: off-line\n", xa->driveno); 664 goto done; 665 } 666 if (error) { 667 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 668 goto done; 669 } 670 printf(" drive %d: ready", xa->driveno); 671 672 /* 673 * now set drive parameters (to semi-bogus values) so we can read the 674 * disk label. 675 */ 676 xy->pcyl = xy->ncyl = 1; 677 xy->acyl = 0; 678 xy->nhead = 1; 679 xy->nsect = 1; 680 xy->sectpercyl = 1; 681 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 682 xy->dkb.bt_bad[lcv].bt_cyl = 683 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 684 685 /* read disk label */ 686 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 687 xy->drive_type++) { 688 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 689 dmaddr, fmode); 690 XYC_DONE(xyc, error); 691 if (error == XY_ERR_AOK) break; 692 } 693 694 if (error != XY_ERR_AOK) { 695 aprint_normal("\n"); 696 aprint_error_dev(&xy->sc_dev, "reading disk label failed: %s\n", 697 xyc_e2str(error)); 698 goto done; 699 } 700 printf(" (drive type %d)\n", xy->drive_type); 701 702 newstate = XY_DRIVE_NOLABEL; 703 704 xy->hw_spt = spt = 0; /* XXX needed ? */ 705 /* Attach the disk: must be before getdisklabel to malloc label */ 706 disk_init(&xy->sc_dk, device_xname(&xy->sc_dev), &xydkdriver); 707 disk_attach(&xy->sc_dk); 708 709 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 710 goto done; 711 712 /* inform the user of what is up */ 713 printf("%s: <%s>, pcyl %d\n", device_xname(&xy->sc_dev), 714 buf, xy->pcyl); 715 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 716 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 717 device_xname(&xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 718 XYFM_BPS); 719 720 /* 721 * 450/451 stupidity: the drive type is encoded into the format 722 * of the disk. the drive type in the IOPB must match the drive 723 * type in the format, or you will not be able to do I/O to the 724 * disk (you get header not found errors). if you have two drives 725 * of different sizes that have the same drive type in their 726 * formatting then you are out of luck. 727 * 728 * this problem was corrected in the 753/7053. 729 */ 730 731 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 732 oxy = xyc->sc_drives[lcv]; 733 if (oxy == NULL || oxy == xy) continue; 734 if (oxy->drive_type != xy->drive_type) continue; 735 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 736 xy->nhead != oxy->nhead) { 737 printf("%s: %s and %s must be the same size!\n", 738 device_xname(&xyc->sc_dev), device_xname(&xy->sc_dev), 739 device_xname(&oxy->sc_dev)); 740 panic("xy drive size mismatch"); 741 } 742 } 743 744 745 /* now set the real drive parameters! */ 746 747 blk = (xy->nsect - 1) + 748 ((xy->nhead - 1) * xy->nsect) + 749 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 750 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 751 XYC_DONE(xyc, error); 752 if (error) { 753 aprint_error_dev(&xy->sc_dev, "write drive size failed: %s\n", 754 xyc_e2str(error)); 755 goto done; 756 } 757 newstate = XY_DRIVE_ONLINE; 758 759 /* 760 * read bad144 table. this table resides on the first sector of the 761 * last track of the disk (i.e. second cyl of "acyl" area). 762 */ 763 764 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 765 /* last cyl */ 766 (xy->nhead - 1) * xy->nsect; /* last head */ 767 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 768 dmaddr, fmode); 769 XYC_DONE(xyc, error); 770 if (error) { 771 aprint_error_dev(&xy->sc_dev, "reading bad144 failed: %s\n", 772 xyc_e2str(error)); 773 goto done; 774 } 775 776 /* check dkbad for sanity */ 777 dkb = (struct dkbad *) buf; 778 for (lcv = 0; lcv < 126; lcv++) { 779 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 780 dkb->bt_bad[lcv].bt_cyl == 0) && 781 dkb->bt_bad[lcv].bt_trksec == 0xffff) 782 continue; /* blank */ 783 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 784 break; 785 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 786 break; 787 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 788 break; 789 } 790 if (lcv != 126) { 791 aprint_error_dev(&xy->sc_dev, "warning: invalid bad144 sector!\n"); 792 } else { 793 memcpy(&xy->dkb, buf, XYFM_BPS); 794 } 795 796 done: 797 if (buf != NULL) { 798 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 799 &seg, rseg, XYFM_BPS, buf); 800 } 801 802 xy->state = newstate; 803 if (!xa->booting) { 804 wakeup(&xy->state); 805 splx(s); 806 } 807 } 808 809 /* 810 * end of autoconfig functions 811 */ 812 813 /* 814 * { b , c } d e v s w f u n c t i o n s 815 */ 816 817 /* 818 * xyclose: close device 819 */ 820 int 821 xyclose(dev, flag, fmt, l) 822 dev_t dev; 823 int flag, fmt; 824 struct lwp *l; 825 826 { 827 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 828 int part = DISKPART(dev); 829 830 /* clear mask bits */ 831 832 switch (fmt) { 833 case S_IFCHR: 834 xy->sc_dk.dk_copenmask &= ~(1 << part); 835 break; 836 case S_IFBLK: 837 xy->sc_dk.dk_bopenmask &= ~(1 << part); 838 break; 839 } 840 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 841 842 return 0; 843 } 844 845 /* 846 * xydump: crash dump system 847 */ 848 int 849 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 850 { 851 int unit, part; 852 struct xy_softc *xy; 853 854 unit = DISKUNIT(dev); 855 part = DISKPART(dev); 856 857 xy = device_lookup_private(&xy_cd, unit); 858 if (!xy) 859 return ENXIO; 860 861 printf("%s%c: crash dump not supported (yet)\n", device_xname(&xy->sc_dev), 862 'a' + part); 863 864 return ENXIO; 865 866 /* outline: globals: "dumplo" == sector number of partition to start 867 * dump at (convert to physical sector with partition table) 868 * "dumpsize" == size of dump in clicks "physmem" == size of physical 869 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 870 * physmem) 871 * 872 * dump a copy of physical memory to the dump device starting at sector 873 * "dumplo" in the swap partition (make sure > 0). map in pages as 874 * we go. use polled I/O. 875 * 876 * XXX how to handle NON_CONTIG? */ 877 878 } 879 880 static enum kauth_device_req 881 xy_getkauthreq(u_char cmd) 882 { 883 enum kauth_device_req req; 884 885 switch (cmd) { 886 case XYCMD_WR: 887 case XYCMD_WTH: 888 case XYCMD_WFM: 889 case XYCMD_WRH: 890 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 891 break; 892 893 case XYCMD_RD: 894 case XYCMD_RTH: 895 case XYCMD_RDH: 896 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 897 break; 898 899 case XYCMD_RDS: 900 case XYCMD_MBD: 901 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 902 break; 903 904 case XYCMD_RST: 905 case XYCMD_SDS: 906 case XYCMD_MBL: 907 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 908 break; 909 910 case XYCMD_NOP: 911 case XYCMD_SK: 912 case XYCMD_ST: 913 case XYCMD_R: 914 default: 915 req = 0; 916 break; 917 } 918 919 return (req); 920 } 921 922 /* 923 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 924 */ 925 int 926 xyioctl(dev, command, addr, flag, l) 927 dev_t dev; 928 u_long command; 929 void *addr; 930 int flag; 931 struct lwp *l; 932 933 { 934 struct xy_softc *xy; 935 struct xd_iocmd *xio; 936 int error, s, unit; 937 #ifdef __HAVE_OLD_DISKLABEL 938 struct disklabel newlabel; 939 #endif 940 struct disklabel *lp; 941 942 unit = DISKUNIT(dev); 943 944 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 945 return (ENXIO); 946 947 /* switch on ioctl type */ 948 949 switch (command) { 950 case DIOCSBAD: /* set bad144 info */ 951 if ((flag & FWRITE) == 0) 952 return EBADF; 953 s = splbio(); 954 memcpy(&xy->dkb, addr, sizeof(xy->dkb)); 955 splx(s); 956 return 0; 957 958 case DIOCGDINFO: /* get disk label */ 959 memcpy(addr, xy->sc_dk.dk_label, sizeof(struct disklabel)); 960 return 0; 961 #ifdef __HAVE_OLD_DISKLABEL 962 case ODIOCGDINFO: 963 newlabel = *(xy->sc_dk.dk_label); 964 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 965 return ENOTTY; 966 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 967 return 0; 968 #endif 969 970 case DIOCGPART: /* get partition info */ 971 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 972 ((struct partinfo *) addr)->part = 973 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 974 return 0; 975 976 case DIOCSDINFO: /* set disk label */ 977 #ifdef __HAVE_OLD_DISKLABEL 978 case ODIOCSDINFO: 979 if (command == ODIOCSDINFO) { 980 memset(&newlabel, 0, sizeof newlabel); 981 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 982 lp = &newlabel; 983 } else 984 #endif 985 lp = (struct disklabel *)addr; 986 987 if ((flag & FWRITE) == 0) 988 return EBADF; 989 error = setdisklabel(xy->sc_dk.dk_label, 990 lp, /* xy->sc_dk.dk_openmask : */ 0, 991 xy->sc_dk.dk_cpulabel); 992 if (error == 0) { 993 if (xy->state == XY_DRIVE_NOLABEL) 994 xy->state = XY_DRIVE_ONLINE; 995 } 996 return error; 997 998 case DIOCWLABEL: /* change write status of disk label */ 999 if ((flag & FWRITE) == 0) 1000 return EBADF; 1001 if (*(int *) addr) 1002 xy->flags |= XY_WLABEL; 1003 else 1004 xy->flags &= ~XY_WLABEL; 1005 return 0; 1006 1007 case DIOCWDINFO: /* write disk label */ 1008 #ifdef __HAVE_OLD_DISKLABEL 1009 case ODIOCWDINFO: 1010 if (command == ODIOCWDINFO) { 1011 memset(&newlabel, 0, sizeof newlabel); 1012 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1013 lp = &newlabel; 1014 } else 1015 #endif 1016 lp = (struct disklabel *)addr; 1017 1018 if ((flag & FWRITE) == 0) 1019 return EBADF; 1020 error = setdisklabel(xy->sc_dk.dk_label, 1021 lp, /* xy->sc_dk.dk_openmask : */ 0, 1022 xy->sc_dk.dk_cpulabel); 1023 if (error == 0) { 1024 if (xy->state == XY_DRIVE_NOLABEL) 1025 xy->state = XY_DRIVE_ONLINE; 1026 1027 /* Simulate opening partition 0 so write succeeds. */ 1028 xy->sc_dk.dk_openmask |= (1 << 0); 1029 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1030 xystrategy, xy->sc_dk.dk_label, 1031 xy->sc_dk.dk_cpulabel); 1032 xy->sc_dk.dk_openmask = 1033 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1034 } 1035 return error; 1036 1037 case DIOSXDCMD: { 1038 enum kauth_device_req req; 1039 1040 xio = (struct xd_iocmd *) addr; 1041 req = xy_getkauthreq(xio->cmd); 1042 if ((error = kauth_authorize_device_passthru(l->l_cred, 1043 dev, req, xio)) != 0) 1044 return (error); 1045 return (xyc_ioctlcmd(xy, dev, xio)); 1046 } 1047 1048 default: 1049 return ENOTTY; 1050 } 1051 } 1052 1053 /* 1054 * xyopen: open drive 1055 */ 1056 1057 int 1058 xyopen(dev_t dev, int flag, int fmt, struct lwp *l) 1059 { 1060 int unit, part; 1061 struct xy_softc *xy; 1062 struct xyc_attach_args xa; 1063 1064 /* first, could it be a valid target? */ 1065 1066 unit = DISKUNIT(dev); 1067 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1068 return (ENXIO); 1069 part = DISKPART(dev); 1070 1071 /* do we need to attach the drive? */ 1072 1073 if (xy->state == XY_DRIVE_UNKNOWN) { 1074 xa.driveno = xy->xy_drive; 1075 xa.fullmode = XY_SUB_WAIT; 1076 xa.booting = 0; 1077 xyattach((device_t) xy->parent, 1078 (device_t) xy, &xa); 1079 if (xy->state == XY_DRIVE_UNKNOWN) { 1080 return (EIO); 1081 } 1082 } 1083 /* check for partition */ 1084 1085 if (part != RAW_PART && 1086 (part >= xy->sc_dk.dk_label->d_npartitions || 1087 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1088 return (ENXIO); 1089 } 1090 /* set open masks */ 1091 1092 switch (fmt) { 1093 case S_IFCHR: 1094 xy->sc_dk.dk_copenmask |= (1 << part); 1095 break; 1096 case S_IFBLK: 1097 xy->sc_dk.dk_bopenmask |= (1 << part); 1098 break; 1099 } 1100 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1101 1102 return 0; 1103 } 1104 1105 int 1106 xyread(dev_t dev, struct uio *uio, int flags) 1107 { 1108 1109 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1110 } 1111 1112 int 1113 xywrite(dev_t dev, struct uio *uio, int flags) 1114 { 1115 1116 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1117 } 1118 1119 1120 /* 1121 * xysize: return size of a partition for a dump 1122 */ 1123 1124 int 1125 xysize(dev) 1126 dev_t dev; 1127 1128 { 1129 struct xy_softc *xysc; 1130 int unit, part, size, omask; 1131 1132 /* valid unit? */ 1133 unit = DISKUNIT(dev); 1134 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1135 return (-1); 1136 1137 part = DISKPART(dev); 1138 omask = xysc->sc_dk.dk_openmask & (1 << part); 1139 1140 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1141 return (-1); 1142 1143 /* do it */ 1144 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1145 size = -1; /* only give valid size for swap partitions */ 1146 else 1147 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1148 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1149 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1150 return (-1); 1151 return (size); 1152 } 1153 1154 /* 1155 * xystrategy: buffering system interface to xy. 1156 */ 1157 1158 void 1159 xystrategy(bp) 1160 struct buf *bp; 1161 1162 { 1163 struct xy_softc *xy; 1164 int s, unit; 1165 struct xyc_attach_args xa; 1166 struct disklabel *lp; 1167 daddr_t blkno; 1168 1169 unit = DISKUNIT(bp->b_dev); 1170 1171 /* check for live device */ 1172 1173 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1174 bp->b_blkno < 0 || 1175 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1176 bp->b_error = EINVAL; 1177 goto done; 1178 } 1179 /* do we need to attach the drive? */ 1180 1181 if (xy->state == XY_DRIVE_UNKNOWN) { 1182 xa.driveno = xy->xy_drive; 1183 xa.fullmode = XY_SUB_WAIT; 1184 xa.booting = 0; 1185 xyattach((device_t)xy->parent, (device_t)xy, &xa); 1186 if (xy->state == XY_DRIVE_UNKNOWN) { 1187 bp->b_error = EIO; 1188 goto done; 1189 } 1190 } 1191 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1192 /* no I/O to unlabeled disks, unless raw partition */ 1193 bp->b_error = EIO; 1194 goto done; 1195 } 1196 /* short circuit zero length request */ 1197 1198 if (bp->b_bcount == 0) 1199 goto done; 1200 1201 /* check bounds with label (disksubr.c). Determine the size of the 1202 * transfer, and make sure it is within the boundaries of the 1203 * partition. Adjust transfer if needed, and signal errors or early 1204 * completion. */ 1205 1206 lp = xy->sc_dk.dk_label; 1207 1208 if (bounds_check_with_label(&xy->sc_dk, bp, 1209 (xy->flags & XY_WLABEL) != 0) <= 0) 1210 goto done; 1211 1212 /* 1213 * Now convert the block number to absolute and put it in 1214 * terms of the device's logical block size. 1215 */ 1216 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1217 if (DISKPART(bp->b_dev) != RAW_PART) 1218 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1219 1220 bp->b_rawblkno = blkno; 1221 1222 /* 1223 * now we know we have a valid buf structure that we need to do I/O 1224 * on. 1225 */ 1226 s = splbio(); /* protect the queues */ 1227 1228 bufq_put(xy->xyq, bp); 1229 1230 /* start 'em up */ 1231 1232 xyc_start(xy->parent, NULL); 1233 1234 /* done! */ 1235 1236 splx(s); 1237 return; 1238 1239 done: /* tells upper layers we are done with this 1240 * buf */ 1241 bp->b_resid = bp->b_bcount; 1242 biodone(bp); 1243 } 1244 /* 1245 * end of {b,c}devsw functions 1246 */ 1247 1248 /* 1249 * i n t e r r u p t f u n c t i o n 1250 * 1251 * xycintr: hardware interrupt. 1252 */ 1253 int 1254 xycintr(v) 1255 void *v; 1256 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(iorq, iopb, cmd, subfun) 1306 struct xy_iorq *iorq; 1307 struct xy_iopb *iopb; 1308 int cmd, subfun; 1309 1310 { 1311 u_long block, dp; 1312 1313 /* normal IOPB case, standard stuff */ 1314 1315 /* chain bit handled later */ 1316 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1317 iopb->com = cmd; 1318 iopb->errnum = 0; 1319 iopb->errs = 0; 1320 iopb->done = 0; 1321 if (iorq->xy) { 1322 iopb->unit = iorq->xy->xy_drive; 1323 iopb->dt = iorq->xy->drive_type; 1324 } else { 1325 iopb->unit = 0; 1326 iopb->dt = 0; 1327 } 1328 block = iorq->blockno; 1329 if (iorq->xy == NULL || block == 0) { 1330 iopb->sect = iopb->head = iopb->cyl = 0; 1331 } else { 1332 iopb->sect = block % iorq->xy->nsect; 1333 block = block / iorq->xy->nsect; 1334 iopb->head = block % iorq->xy->nhead; 1335 block = block / iorq->xy->nhead; 1336 iopb->cyl = block; 1337 } 1338 iopb->scnt = iorq->sectcnt; 1339 dp = (u_long) iorq->dbuf; 1340 if (iorq->dbuf == NULL) { 1341 iopb->dataa = 0; 1342 iopb->datar = 0; 1343 } else { 1344 iopb->dataa = (dp & 0xffff); 1345 iopb->datar = ((dp & 0xff0000) >> 16); 1346 } 1347 iopb->subfn = subfun; 1348 } 1349 1350 1351 /* 1352 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1353 */ 1354 1355 int 1356 xyc_unbusy(xyc, del) 1357 1358 struct xyc *xyc; 1359 int del; 1360 1361 { 1362 while (del-- > 0) { 1363 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1364 break; 1365 DELAY(1); 1366 } 1367 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1368 } 1369 1370 /* 1371 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1372 * note that NORM requests are handled separately. 1373 */ 1374 int 1375 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1376 struct xyc_softc *xycsc; 1377 int cmd, subfn, unit, block, scnt; 1378 char *dptr; 1379 int fullmode; 1380 1381 { 1382 int submode = XY_STATE(fullmode); 1383 struct xy_iorq *iorq = xycsc->ciorq; 1384 struct xy_iopb *iopb = xycsc->ciopb; 1385 1386 /* 1387 * is someone else using the control iopq wait for it if we can 1388 */ 1389 start: 1390 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1391 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1392 return(XY_ERR_FAIL); 1393 goto start; 1394 } 1395 1396 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1397 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1398 iorq->mode = XY_SUB_FREE; 1399 printf("%s: stole control iopb\n", device_xname(&xycsc->sc_dev)); 1400 } 1401 1402 /* init iorq/iopb */ 1403 1404 xyc_rqinit(iorq, xycsc, 1405 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1406 fullmode, block, scnt, dptr, NULL); 1407 1408 /* load IOPB from iorq */ 1409 1410 xyc_rqtopb(iorq, iopb, cmd, subfn); 1411 1412 /* submit it for processing */ 1413 1414 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1415 1416 return(XY_ERR_AOK); 1417 } 1418 1419 /* 1420 * xyc_startbuf 1421 * start a buffer for running 1422 */ 1423 1424 int 1425 xyc_startbuf(xycsc, xysc, bp) 1426 struct xyc_softc *xycsc; 1427 struct xy_softc *xysc; 1428 struct buf *bp; 1429 1430 { 1431 int partno, error; 1432 struct xy_iorq *iorq; 1433 struct xy_iopb *iopb; 1434 u_long block; 1435 1436 iorq = xysc->xyrq; 1437 iopb = iorq->iopb; 1438 1439 /* get buf */ 1440 1441 if (bp == NULL) 1442 panic("xyc_startbuf null buf"); 1443 1444 partno = DISKPART(bp->b_dev); 1445 #ifdef XYC_DEBUG 1446 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(&xysc->sc_dev), 1447 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1448 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1449 bp->b_bcount, bp->b_data); 1450 #endif 1451 1452 /* 1453 * load request. 1454 * 1455 * note that iorq points to the buffer as mapped into DVMA space, 1456 * where as the bp->b_data points to its non-DVMA mapping. 1457 */ 1458 1459 block = bp->b_rawblkno; 1460 1461 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1462 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1463 if (error != 0) { 1464 aprint_error_dev(&xycsc->sc_dev, "warning: cannot load DMA map\n"); 1465 return (XY_ERR_FAIL); /* XXX: need some sort of 1466 * call-back scheme here? */ 1467 } 1468 1469 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1470 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1471 ? BUS_DMASYNC_PREREAD 1472 : BUS_DMASYNC_PREWRITE); 1473 1474 /* init iorq and load iopb from it */ 1475 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1476 bp->b_bcount / XYFM_BPS, 1477 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1478 bp); 1479 1480 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1481 1482 /* Instrumentation. */ 1483 disk_busy(&xysc->sc_dk); 1484 1485 return (XY_ERR_AOK); 1486 } 1487 1488 1489 /* 1490 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1491 * if ok. if it fail returns an error code. type is XY_SUB_*. 1492 * 1493 * note: caller frees iorq in all cases except NORM 1494 * 1495 * return value: 1496 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1497 * WAIT: XY_AOK (success), <error-code> (failed) 1498 * POLL: <same as WAIT> 1499 * NOQ : <same as NORM> 1500 * 1501 * there are three sources for i/o requests: 1502 * [1] xystrategy: normal block I/O, using "struct buf" system. 1503 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1504 * [3] open/ioctl: these are I/O requests done in the context of a process, 1505 * and the process should block until they are done. 1506 * 1507 * software state is stored in the iorq structure. each iorq has an 1508 * iopb structure. the hardware understands the iopb structure. 1509 * every command must go through an iopb. a 450 handles one iopb at a 1510 * time, where as a 451 can take them in chains. [the 450 claims it 1511 * can handle chains, but is appears to be buggy...] iopb are allocated 1512 * in DVMA space at boot up time. each disk gets one iopb, and the 1513 * controller gets one (for POLL and WAIT commands). what happens if 1514 * the iopb is busy? for i/o type [1], the buffers are queued at the 1515 * "buff" layer and * picked up later by the interrupt routine. for case 1516 * [2] we can only be blocked if there is a WAIT type I/O request being 1517 * run. since this can only happen when we are crashing, we wait a sec 1518 * and then steal the IOPB. for case [3] the process can sleep 1519 * on the iorq free list until some iopbs are available. 1520 */ 1521 1522 1523 int 1524 xyc_submit_iorq(xycsc, iorq, type) 1525 struct xyc_softc *xycsc; 1526 struct xy_iorq *iorq; 1527 int type; 1528 1529 { 1530 struct xy_iopb *dmaiopb; 1531 1532 #ifdef XYC_DEBUG 1533 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1534 device_xname(&xycsc->sc_dev), iorq, type); 1535 #endif 1536 1537 /* first check and see if controller is busy */ 1538 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1539 #ifdef XYC_DEBUG 1540 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1541 #endif 1542 if (type == XY_SUB_NOQ) 1543 return (XY_ERR_FAIL); /* failed */ 1544 switch (type) { 1545 case XY_SUB_NORM: 1546 return XY_ERR_AOK; /* success */ 1547 case XY_SUB_WAIT: 1548 while (iorq->iopb->done == 0) { 1549 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1550 } 1551 return (iorq->errnum); 1552 case XY_SUB_POLL: /* steal controller */ 1553 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1554 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1555 panic("xyc_submit_iorq: stuck xyc"); 1556 printf("%s: stole controller\n", 1557 device_xname(&xycsc->sc_dev)); 1558 break; 1559 default: 1560 panic("xyc_submit_iorq adding"); 1561 } 1562 } 1563 1564 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1565 if (dmaiopb == NULL) { /* nothing doing? */ 1566 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1567 return(XY_ERR_AOK); 1568 panic("xyc_submit_iorq: xyc_chain failed!"); 1569 } 1570 1571 XYC_GO(xycsc->xyc, dmaiopb); 1572 1573 /* command now running, wrap it up */ 1574 switch (type) { 1575 case XY_SUB_NORM: 1576 case XY_SUB_NOQ: 1577 return (XY_ERR_AOK); /* success */ 1578 case XY_SUB_WAIT: 1579 while (iorq->iopb->done == 0) { 1580 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1581 } 1582 return (iorq->errnum); 1583 case XY_SUB_POLL: 1584 return (xyc_piodriver(xycsc, iorq)); 1585 default: 1586 panic("xyc_submit_iorq wrap up"); 1587 } 1588 panic("xyc_submit_iorq"); 1589 return 0; /* not reached */ 1590 } 1591 1592 1593 /* 1594 * xyc_chain: build a chain. return dvma address of first element in 1595 * the chain. iorq != NULL: means we only want that item on the chain. 1596 */ 1597 1598 struct xy_iopb * 1599 xyc_chain(xycsc, iorq) 1600 struct xyc_softc *xycsc; 1601 struct xy_iorq *iorq; 1602 1603 { 1604 int togo, chain, hand; 1605 1606 memset(xycsc->xy_chain, 0, sizeof(xycsc->xy_chain)); 1607 1608 /* 1609 * promote control IOPB to the top 1610 */ 1611 if (iorq == NULL) { 1612 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1613 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1614 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1615 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1616 } 1617 1618 /* 1619 * special case: if iorq != NULL then we have a POLL or WAIT request. 1620 * we let these take priority and do them first. 1621 */ 1622 if (iorq) { 1623 xycsc->xy_chain[0] = iorq; 1624 iorq->iopb->chen = 0; 1625 return(iorq->dmaiopb); 1626 } 1627 1628 /* 1629 * NORM case: do round robin and maybe chain (if allowed and possible) 1630 */ 1631 chain = 0; 1632 hand = xycsc->xy_hand; 1633 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1634 1635 for (togo = XYC_MAXIOPB; togo > 0; 1636 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1637 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1638 1639 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1640 xycsc->iopbase[hand].done) 1641 continue; /* not ready-for-i/o */ 1642 1643 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1644 iopb = xycsc->xy_chain[chain]->iopb; 1645 iopb->chen = 0; 1646 if (chain != 0) { 1647 /* adding a link to a chain */ 1648 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1649 prev_iopb->chen = 1; 1650 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1651 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1652 } else { 1653 /* head of chain */ 1654 iorq = xycsc->xy_chain[chain]; 1655 } 1656 chain++; 1657 1658 /* quit if chaining dis-allowed */ 1659 if (xycsc->no_ols) 1660 break; 1661 } 1662 1663 return(iorq ? iorq->dmaiopb : NULL); 1664 } 1665 1666 /* 1667 * xyc_piodriver 1668 * 1669 * programmed i/o driver. this function takes over the computer 1670 * and drains off the polled i/o request. it returns the status of the iorq 1671 * the caller is interesting in. 1672 */ 1673 int 1674 xyc_piodriver(xycsc, iorq) 1675 struct xyc_softc *xycsc; 1676 struct xy_iorq *iorq; 1677 1678 { 1679 int nreset = 0; 1680 int retval = 0; 1681 u_long res; 1682 #ifdef XYC_DEBUG 1683 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(&xycsc->sc_dev), iorq); 1684 #endif 1685 1686 while (iorq->iopb->done == 0) { 1687 1688 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1689 1690 /* we expect some progress soon */ 1691 if (res == XY_ERR_FAIL && nreset >= 2) { 1692 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1693 #ifdef XYC_DEBUG 1694 printf("xyc_piodriver: timeout\n"); 1695 #endif 1696 return (XY_ERR_FAIL); 1697 } 1698 if (res == XY_ERR_FAIL) { 1699 if (xyc_reset(xycsc, 0, 1700 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1701 XY_ERR_FAIL, 1702 0) == XY_ERR_FAIL) 1703 return (XY_ERR_FAIL); /* flushes all but POLL 1704 * requests, resets */ 1705 continue; 1706 } 1707 1708 xyc_remove_iorq(xycsc); /* may resubmit request */ 1709 1710 if (iorq->iopb->done == 0) 1711 xyc_start(xycsc, iorq); 1712 } 1713 1714 /* get return value */ 1715 1716 retval = iorq->errnum; 1717 1718 #ifdef XYC_DEBUG 1719 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1720 iorq->errnum, xyc_e2str(iorq->errnum)); 1721 #endif 1722 1723 /* start up any bufs that have queued */ 1724 1725 xyc_start(xycsc, NULL); 1726 1727 return (retval); 1728 } 1729 1730 /* 1731 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1732 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1733 */ 1734 void 1735 xyc_xyreset(xycsc, xysc) 1736 struct xyc_softc *xycsc; 1737 struct xy_softc *xysc; 1738 1739 { 1740 struct xy_iopb tmpiopb; 1741 struct xy_iopb *iopb; 1742 int del; 1743 1744 iopb = xycsc->ciopb; 1745 1746 /* Save contents */ 1747 memcpy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1748 1749 iopb->chen = iopb->done = iopb->errs = 0; 1750 iopb->ien = 0; 1751 iopb->com = XYCMD_RST; 1752 iopb->unit = xysc->xy_drive; 1753 1754 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1755 1756 del = XYC_RESETUSEC; 1757 while (del > 0) { 1758 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1759 break; 1760 DELAY(1); 1761 del--; 1762 } 1763 1764 if (del <= 0 || iopb->errs) { 1765 printf("%s: off-line: %s\n", device_xname(&xycsc->sc_dev), 1766 xyc_e2str(iopb->errnum)); 1767 del = xycsc->xyc->xyc_rsetup; 1768 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1769 panic("xyc_reset"); 1770 } else { 1771 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1772 } 1773 1774 /* Restore contents */ 1775 memcpy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1776 } 1777 1778 1779 /* 1780 * xyc_reset: reset everything: requests are marked as errors except 1781 * a polled request (which is resubmitted) 1782 */ 1783 int 1784 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1785 struct xyc_softc *xycsc; 1786 int quiet, error; 1787 struct xy_iorq *blastmode; 1788 struct xy_softc *xysc; 1789 1790 { 1791 int del = 0, lcv, retval = XY_ERR_AOK; 1792 1793 /* soft reset hardware */ 1794 1795 if (!quiet) 1796 printf("%s: soft reset\n", device_xname(&xycsc->sc_dev)); 1797 del = xycsc->xyc->xyc_rsetup; 1798 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1799 if (del == XY_ERR_FAIL) { 1800 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1801 retval = XY_ERR_FAIL; 1802 } 1803 if (xysc) 1804 xyc_xyreset(xycsc, xysc); 1805 1806 /* fix queues based on "blast-mode" */ 1807 1808 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1809 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1810 1811 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1812 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1813 XY_STATE(iorq->mode) != XY_SUB_NORM) 1814 /* is it active? */ 1815 continue; 1816 1817 if (blastmode == XY_RSET_ALL || 1818 blastmode != iorq) { 1819 /* failed */ 1820 iorq->errnum = error; 1821 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1822 switch (XY_STATE(iorq->mode)) { 1823 case XY_SUB_NORM: 1824 iorq->buf->b_error = EIO; 1825 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1826 1827 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1828 iorq->dmamap->dm_mapsize, 1829 (iorq->buf->b_flags & B_READ) 1830 ? BUS_DMASYNC_POSTREAD 1831 : BUS_DMASYNC_POSTWRITE); 1832 1833 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1834 1835 (void)bufq_get(iorq->xy->xyq); 1836 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1837 (xycsc->reqs[lcv].buf->b_bcount - 1838 xycsc->reqs[lcv].buf->b_resid), 1839 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1840 biodone(iorq->buf); 1841 iorq->mode = XY_SUB_FREE; 1842 break; 1843 case XY_SUB_WAIT: 1844 wakeup(iorq); 1845 case XY_SUB_POLL: 1846 iorq->mode = 1847 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1848 break; 1849 } 1850 1851 } else { 1852 1853 /* resubmit, no need to do anything here */ 1854 } 1855 } 1856 1857 /* 1858 * now, if stuff is waiting, start it. 1859 * since we just reset it should go 1860 */ 1861 xyc_start(xycsc, NULL); 1862 1863 return (retval); 1864 } 1865 1866 /* 1867 * xyc_start: start waiting buffers 1868 */ 1869 1870 void 1871 xyc_start(xycsc, iorq) 1872 struct xyc_softc *xycsc; 1873 struct xy_iorq *iorq; 1874 1875 { 1876 int lcv; 1877 struct xy_softc *xy; 1878 1879 if (iorq == NULL) { 1880 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1881 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1882 if (bufq_peek(xy->xyq) == NULL) continue; 1883 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1884 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1885 } 1886 } 1887 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1888 } 1889 1890 /* 1891 * xyc_remove_iorq: remove "done" IOPB's. 1892 */ 1893 1894 int 1895 xyc_remove_iorq(xycsc) 1896 struct xyc_softc *xycsc; 1897 1898 { 1899 int errnum, rq, comm, errs; 1900 struct xyc *xyc = xycsc->xyc; 1901 u_long addr; 1902 struct xy_iopb *iopb; 1903 struct xy_iorq *iorq; 1904 struct buf *bp; 1905 1906 if (xyc->xyc_csr & XYC_DERR) { 1907 /* 1908 * DOUBLE ERROR: should never happen under normal use. This 1909 * error is so bad, you can't even tell which IOPB is bad, so 1910 * we dump them all. 1911 */ 1912 errnum = XY_ERR_DERR; 1913 aprint_error_dev(&xycsc->sc_dev, "DOUBLE ERROR!\n"); 1914 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1915 aprint_error_dev(&xycsc->sc_dev, "soft reset failed!\n"); 1916 panic("xyc_remove_iorq: controller DEAD"); 1917 } 1918 return (XY_ERR_AOK); 1919 } 1920 1921 /* 1922 * get iopb that is done, loop down the chain 1923 */ 1924 1925 if (xyc->xyc_csr & XYC_ERR) { 1926 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1927 } 1928 if (xyc->xyc_csr & XYC_IPND) { 1929 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1930 } 1931 1932 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1933 iorq = xycsc->xy_chain[rq]; 1934 if (iorq == NULL) break; /* done ! */ 1935 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1936 continue; /* free, or done */ 1937 iopb = iorq->iopb; 1938 if (iopb->done == 0) 1939 continue; /* not done yet */ 1940 1941 comm = iopb->com; 1942 errs = iopb->errs; 1943 1944 if (errs) 1945 iorq->errnum = iopb->errnum; 1946 else 1947 iorq->errnum = 0; 1948 1949 /* handle non-fatal errors */ 1950 1951 if (errs && 1952 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1953 continue; /* AOK: we resubmitted it */ 1954 1955 1956 /* this iorq is now done (hasn't been restarted or anything) */ 1957 1958 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1959 xyc_perror(iorq, iopb, 0); 1960 1961 /* now, if read/write check to make sure we got all the data 1962 * we needed. (this may not be the case if we got an error in 1963 * the middle of a multisector request). */ 1964 1965 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1966 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1967 /* we just successfully processed a bad144 sector 1968 * note: if we are in bad 144 mode, the pointers have 1969 * been advanced already (see above) and are pointing 1970 * at the bad144 sector. to exit bad144 mode, we 1971 * must advance the pointers 1 sector and issue a new 1972 * request if there are still sectors left to process 1973 * 1974 */ 1975 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1976 1977 /* exit b144 mode */ 1978 iorq->mode = iorq->mode & (~XY_MODE_B144); 1979 1980 if (iorq->sectcnt) { /* more to go! */ 1981 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1982 iopb->errs = iopb->done = 0; 1983 iorq->tries = 0; 1984 iopb->scnt = iorq->sectcnt; 1985 iopb->cyl = iorq->blockno / 1986 iorq->xy->sectpercyl; 1987 iopb->head = 1988 (iorq->blockno / iorq->xy->nhead) % 1989 iorq->xy->nhead; 1990 iopb->sect = iorq->blockno % XYFM_BPS; 1991 addr = (u_long) iorq->dbuf; 1992 iopb->dataa = (addr & 0xffff); 1993 iopb->datar = ((addr & 0xff0000) >> 16); 1994 /* will resubit at end */ 1995 continue; 1996 } 1997 } 1998 /* final cleanup, totally done with this request */ 1999 2000 switch (XY_STATE(iorq->mode)) { 2001 case XY_SUB_NORM: 2002 bp = iorq->buf; 2003 if (errs) { 2004 bp->b_error = EIO; 2005 bp->b_resid = iorq->sectcnt * XYFM_BPS; 2006 } else { 2007 bp->b_resid = 0; /* done */ 2008 } 2009 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2010 iorq->dmamap->dm_mapsize, 2011 (iorq->buf->b_flags & B_READ) 2012 ? BUS_DMASYNC_POSTREAD 2013 : BUS_DMASYNC_POSTWRITE); 2014 2015 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2016 2017 (void)bufq_get(iorq->xy->xyq); 2018 disk_unbusy(&iorq->xy->sc_dk, 2019 (bp->b_bcount - bp->b_resid), 2020 (bp->b_flags & B_READ)); 2021 iorq->mode = XY_SUB_FREE; 2022 biodone(bp); 2023 break; 2024 case XY_SUB_WAIT: 2025 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2026 wakeup(iorq); 2027 break; 2028 case XY_SUB_POLL: 2029 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2030 break; 2031 } 2032 } 2033 2034 return (XY_ERR_AOK); 2035 } 2036 2037 /* 2038 * xyc_perror: print error. 2039 * - if still_trying is true: we got an error, retried and got a 2040 * different error. in that case lasterror is the old error, 2041 * and errnum is the new one. 2042 * - if still_trying is not true, then if we ever had an error it 2043 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2044 * from that error (otherwise iorq->errnum == iorq->lasterror). 2045 */ 2046 void 2047 xyc_perror(iorq, iopb, still_trying) 2048 struct xy_iorq *iorq; 2049 struct xy_iopb *iopb; 2050 int still_trying; 2051 2052 { 2053 2054 int error = iorq->lasterror; 2055 2056 printf("%s", (iorq->xy) ? device_xname(&iorq->xy->sc_dev) 2057 : device_xname(&iorq->xyc->sc_dev)); 2058 if (iorq->buf) 2059 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2060 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2061 printf("%s %d/%d/%d: ", 2062 (iopb->com == XYCMD_RD) ? "read" : "write", 2063 iopb->cyl, iopb->head, iopb->sect); 2064 printf("%s", xyc_e2str(error)); 2065 2066 if (still_trying) 2067 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2068 else 2069 if (iorq->errnum == 0) 2070 printf(" [recovered in %d tries]", iorq->tries); 2071 2072 printf("\n"); 2073 } 2074 2075 /* 2076 * xyc_error: non-fatal error encountered... recover. 2077 * return AOK if resubmitted, return FAIL if this iopb is done 2078 */ 2079 int 2080 xyc_error(xycsc, iorq, iopb, comm) 2081 struct xyc_softc *xycsc; 2082 struct xy_iorq *iorq; 2083 struct xy_iopb *iopb; 2084 int comm; 2085 2086 { 2087 int errnum = iorq->errnum; 2088 int erract = xyc_entoact(errnum); 2089 int oldmode, advance; 2090 #ifdef __sparc__ 2091 int i; 2092 #endif 2093 2094 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2095 oldmode = iorq->mode; 2096 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2097 /* make xyc_start ignore us */ 2098 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2099 iorq->mode = oldmode; 2100 } 2101 /* check for read/write to a sector in bad144 table if bad: redirect 2102 * request to bad144 area */ 2103 2104 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2105 (iorq->mode & XY_MODE_B144) == 0) { 2106 advance = iorq->sectcnt - iopb->scnt; 2107 XYC_ADVANCE(iorq, advance); 2108 #ifdef __sparc__ 2109 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2110 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2111 iorq->blockno % iorq->xy->nsect)) != -1) { 2112 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2113 * redirect */ 2114 iopb->errnum = iopb->done = iopb->errs = 0; 2115 iopb->scnt = 1; 2116 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2117 /* second to last acyl */ 2118 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2119 * standard */ 2120 iopb->head = i / iorq->xy->nhead; 2121 iopb->sect = i % iorq->xy->nhead; 2122 /* will resubmit when we come out of remove_iorq */ 2123 return (XY_ERR_AOK); /* recovered! */ 2124 } 2125 #endif 2126 } 2127 2128 /* 2129 * it isn't a bad144 sector, must be real error! see if we can retry 2130 * it? 2131 */ 2132 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2133 xyc_perror(iorq, iopb, 1); /* inform of error state 2134 * change */ 2135 iorq->lasterror = errnum; 2136 2137 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2138 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2139 iorq->tries++; 2140 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2141 /* will resubmit at end of remove_iorq */ 2142 return (XY_ERR_AOK); /* recovered! */ 2143 } 2144 2145 /* failed to recover from this error */ 2146 return (XY_ERR_FAIL); 2147 } 2148 2149 /* 2150 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2151 */ 2152 void 2153 xyc_tick(arg) 2154 void *arg; 2155 2156 { 2157 struct xyc_softc *xycsc = arg; 2158 int lcv, s, reset = 0; 2159 2160 /* reduce ttl for each request if one goes to zero, reset xyc */ 2161 s = splbio(); 2162 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2163 if (xycsc->reqs[lcv].mode == 0 || 2164 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2165 continue; 2166 xycsc->reqs[lcv].ttl--; 2167 if (xycsc->reqs[lcv].ttl == 0) 2168 reset = 1; 2169 } 2170 if (reset) { 2171 printf("%s: watchdog timeout\n", device_xname(&xycsc->sc_dev)); 2172 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2173 } 2174 splx(s); 2175 2176 /* until next time */ 2177 2178 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2179 } 2180 2181 /* 2182 * xyc_ioctlcmd: this function provides a user level interface to the 2183 * controller via ioctl. this allows "format" programs to be written 2184 * in user code, and is also useful for some debugging. we return 2185 * an error code. called at user priority. 2186 * 2187 * XXX missing a few commands (see the 7053 driver for ideas) 2188 */ 2189 int 2190 xyc_ioctlcmd(xy, dev, xio) 2191 struct xy_softc *xy; 2192 dev_t dev; 2193 struct xd_iocmd *xio; 2194 2195 { 2196 int s, rqno, dummy = 0; 2197 char *dvmabuf = NULL, *buf = NULL; 2198 struct xyc_softc *xycsc; 2199 int rseg, error; 2200 bus_dma_segment_t seg; 2201 2202 /* check sanity of requested command */ 2203 2204 switch (xio->cmd) { 2205 2206 case XYCMD_NOP: /* no op: everything should be zero */ 2207 if (xio->subfn || xio->dptr || xio->dlen || 2208 xio->block || xio->sectcnt) 2209 return (EINVAL); 2210 break; 2211 2212 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2213 case XYCMD_WR: 2214 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2215 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2216 return (EINVAL); 2217 break; 2218 2219 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2220 return (EINVAL); 2221 2222 break; 2223 2224 default: 2225 return (EINVAL);/* ??? */ 2226 } 2227 2228 xycsc = xy->parent; 2229 2230 /* create DVMA buffer for request if needed */ 2231 if (xio->dlen) { 2232 bus_addr_t busbuf; 2233 2234 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2235 &seg, &rseg, 2236 xio->dlen, (void **)&buf, 2237 &busbuf)) != 0) { 2238 return (error); 2239 } 2240 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2241 2242 if (xio->cmd == XYCMD_WR) { 2243 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2244 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2245 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2246 return (error); 2247 } 2248 } 2249 } 2250 /* do it! */ 2251 2252 error = 0; 2253 s = splbio(); 2254 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2255 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2256 if (rqno == XY_ERR_FAIL) { 2257 error = EIO; 2258 goto done; 2259 } 2260 xio->errnum = xycsc->ciorq->errnum; 2261 xio->tries = xycsc->ciorq->tries; 2262 XYC_DONE(xycsc, dummy); 2263 2264 if (xio->cmd == XYCMD_RD) 2265 error = copyout(buf, xio->dptr, xio->dlen); 2266 2267 done: 2268 splx(s); 2269 if (dvmabuf) { 2270 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2271 xio->dlen, buf); 2272 } 2273 return (error); 2274 } 2275 2276 /* 2277 * xyc_e2str: convert error code number into an error string 2278 */ 2279 const char * 2280 xyc_e2str(int no) 2281 { 2282 switch (no) { 2283 case XY_ERR_FAIL: 2284 return ("Software fatal error"); 2285 case XY_ERR_DERR: 2286 return ("DOUBLE ERROR"); 2287 case XY_ERR_AOK: 2288 return ("Successful completion"); 2289 case XY_ERR_IPEN: 2290 return("Interrupt pending"); 2291 case XY_ERR_BCFL: 2292 return("Busy conflict"); 2293 case XY_ERR_TIMO: 2294 return("Operation timeout"); 2295 case XY_ERR_NHDR: 2296 return("Header not found"); 2297 case XY_ERR_HARD: 2298 return("Hard ECC error"); 2299 case XY_ERR_ICYL: 2300 return("Illegal cylinder address"); 2301 case XY_ERR_ISEC: 2302 return("Illegal sector address"); 2303 case XY_ERR_SMAL: 2304 return("Last sector too small"); 2305 case XY_ERR_SACK: 2306 return("Slave ACK error (non-existent memory)"); 2307 case XY_ERR_CHER: 2308 return("Cylinder and head/header error"); 2309 case XY_ERR_SRTR: 2310 return("Auto-seek retry successful"); 2311 case XY_ERR_WPRO: 2312 return("Write-protect error"); 2313 case XY_ERR_UIMP: 2314 return("Unimplemented command"); 2315 case XY_ERR_DNRY: 2316 return("Drive not ready"); 2317 case XY_ERR_SZER: 2318 return("Sector count zero"); 2319 case XY_ERR_DFLT: 2320 return("Drive faulted"); 2321 case XY_ERR_ISSZ: 2322 return("Illegal sector size"); 2323 case XY_ERR_SLTA: 2324 return("Self test A"); 2325 case XY_ERR_SLTB: 2326 return("Self test B"); 2327 case XY_ERR_SLTC: 2328 return("Self test C"); 2329 case XY_ERR_SOFT: 2330 return("Soft ECC error"); 2331 case XY_ERR_SFOK: 2332 return("Soft ECC error recovered"); 2333 case XY_ERR_IHED: 2334 return("Illegal head"); 2335 case XY_ERR_DSEQ: 2336 return("Disk sequencer error"); 2337 case XY_ERR_SEEK: 2338 return("Seek error"); 2339 default: 2340 return ("Unknown error"); 2341 } 2342 } 2343 2344 int 2345 xyc_entoact(errnum) 2346 2347 int errnum; 2348 2349 { 2350 switch (errnum) { 2351 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2352 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2353 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2354 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2355 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2356 2357 return(XY_ERA_PROG); /* program error ! */ 2358 2359 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2360 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2361 case XY_ERR_SOFT: 2362 2363 return(XY_ERA_HARD); /* hard error, retry */ 2364 2365 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2366 2367 return(XY_ERA_RSET); /* hard error reset */ 2368 2369 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2370 2371 return(XY_ERA_SOFT); /* an FYI error */ 2372 2373 case XY_ERR_WPRO: 2374 2375 return(XY_ERA_WPRO); /* write protect */ 2376 } 2377 2378 return(XY_ERA_PROG); /* ??? */ 2379 } 2380
Indexes created Tue Sep 30 11:09:46 GMT 2025