xy.c revision 1.84
1 /* $NetBSD: xy.c,v 1.84 2009/03/14 15:36:21 dsl Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * 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 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 14-Sep-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * [3] Xylogics Model 450 User's Manual 45 * part number: 166-017-001, Revision B, 1983. 46 * [4] Addendum to Xylogics Model 450 Disk Controller User's 47 * Manual, Jan. 1985. 48 * [5] The 451 Controller, Rev. B3, September 2, 1986. 49 * [6] David Jones <dej (at) achilles.net>'s unfinished 450/451 driver 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xy.c,v 1.84 2009/03/14 15:36:21 dsl Exp $"); 55 56 #undef XYC_DEBUG /* full debug */ 57 #undef XYC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XYC_DIAG) 59 #define XYC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/syslog.h> 77 #include <sys/dkbad.h> 78 #include <sys/conf.h> 79 #include <sys/kauth.h> 80 81 #include <sys/bus.h> 82 #include <sys/intr.h> 83 84 #if defined(__sparc__) || defined(sun3) 85 #include <dev/sun/disklabel.h> 86 #endif 87 88 #include <dev/vme/vmereg.h> 89 #include <dev/vme/vmevar.h> 90 91 #include <dev/vme/xyreg.h> 92 #include <dev/vme/xyvar.h> 93 #include <dev/vme/xio.h> 94 95 #include "locators.h" 96 97 /* 98 * macros 99 */ 100 101 /* 102 * XYC_GO: start iopb ADDR (DVMA addr in a u_long) on XYC 103 */ 104 #define XYC_GO(XYC, ADDR) { \ 105 u_long addr = (u_long)ADDR; \ 106 (XYC)->xyc_addr_lo = ((addr) & 0xff); \ 107 (addr) = ((addr) >> 8); \ 108 (XYC)->xyc_addr_hi = ((addr) & 0xff); \ 109 (addr) = ((addr) >> 8); \ 110 (XYC)->xyc_reloc_lo = ((addr) & 0xff); \ 111 (addr) = ((addr) >> 8); \ 112 (XYC)->xyc_reloc_hi = (addr); \ 113 (XYC)->xyc_csr = XYC_GBSY; /* go! */ \ 114 } 115 116 /* 117 * XYC_DONE: don't need IORQ, get error code and free (done after xyc_cmd) 118 */ 119 120 #define XYC_DONE(SC,ER) { \ 121 if ((ER) == XY_ERR_AOK) { \ 122 (ER) = (SC)->ciorq->errnum; \ 123 (SC)->ciorq->mode = XY_SUB_FREE; \ 124 wakeup((SC)->ciorq); \ 125 } \ 126 } 127 128 /* 129 * XYC_ADVANCE: advance iorq's pointers by a number of sectors 130 */ 131 132 #define XYC_ADVANCE(IORQ, N) { \ 133 if (N) { \ 134 (IORQ)->sectcnt -= (N); \ 135 (IORQ)->blockno += (N); \ 136 (IORQ)->dbuf += ((N)*XYFM_BPS); \ 137 } \ 138 } 139 140 /* 141 * note - addresses you can sleep on: 142 * [1] & of xy_softc's "state" (waiting for a chance to attach a drive) 143 * [2] & an iorq (waiting for an XY_SUB_WAIT iorq to finish) 144 */ 145 146 147 /* 148 * function prototypes 149 * "xyc_*" functions are internal, all others are external interfaces 150 */ 151 152 extern int pil_to_vme[]; /* from obio.c */ 153 154 /* internals */ 155 struct xy_iopb *xyc_chain(struct xyc_softc *, struct xy_iorq *); 156 int xyc_cmd(struct xyc_softc *, int, int, int, int, int, char *, int); 157 const char *xyc_e2str(int); 158 int xyc_entoact(int); 159 int xyc_error(struct xyc_softc *, struct xy_iorq *, 160 struct xy_iopb *, int); 161 int xyc_ioctlcmd(struct xy_softc *, dev_t dev, struct xd_iocmd *); 162 void xyc_perror(struct xy_iorq *, struct xy_iopb *, int); 163 int xyc_piodriver(struct xyc_softc *, struct xy_iorq *); 164 int xyc_remove_iorq(struct xyc_softc *); 165 int xyc_reset(struct xyc_softc *, int, struct xy_iorq *, int, 166 struct xy_softc *); 167 inline void xyc_rqinit(struct xy_iorq *, struct xyc_softc *, 168 struct xy_softc *, int, u_long, int, 169 void *, struct buf *); 170 void xyc_rqtopb(struct xy_iorq *, struct xy_iopb *, int, int); 171 void xyc_start(struct xyc_softc *, struct xy_iorq *); 172 int xyc_startbuf(struct xyc_softc *, struct xy_softc *, struct buf *); 173 int xyc_submit_iorq(struct xyc_softc *, struct xy_iorq *, int); 174 void xyc_tick(void *); 175 int xyc_unbusy(struct xyc *, int); 176 void xyc_xyreset(struct xyc_softc *, struct xy_softc *); 177 int xy_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 178 int *, bus_size_t, void **, bus_addr_t *); 179 void xy_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 180 int, bus_size_t, void *); 181 182 /* machine interrupt hook */ 183 int xycintr(void *); 184 185 /* autoconf */ 186 int xycmatch(struct device *, struct cfdata *, void *); 187 void xycattach(struct device *, struct device *, void *); 188 int xymatch(struct device *, struct cfdata *, void *); 189 void xyattach(struct device *, struct device *, void *); 190 static int xyc_probe(void *, bus_space_tag_t, bus_space_handle_t); 191 192 static void xydummystrat(struct buf *); 193 int xygetdisklabel(struct xy_softc *, void *); 194 195 /* 196 * cfattach's: device driver interface to autoconfig 197 */ 198 199 CFATTACH_DECL(xyc, sizeof(struct xyc_softc), 200 xycmatch, xycattach, NULL, NULL); 201 202 CFATTACH_DECL(xy, sizeof(struct xy_softc), 203 xymatch, xyattach, NULL, NULL); 204 205 extern struct cfdriver xy_cd; 206 207 dev_type_open(xyopen); 208 dev_type_close(xyclose); 209 dev_type_read(xyread); 210 dev_type_write(xywrite); 211 dev_type_ioctl(xyioctl); 212 dev_type_strategy(xystrategy); 213 dev_type_dump(xydump); 214 dev_type_size(xysize); 215 216 const struct bdevsw xy_bdevsw = { 217 xyopen, xyclose, xystrategy, xyioctl, xydump, xysize, D_DISK 218 }; 219 220 const struct cdevsw xy_cdevsw = { 221 xyopen, xyclose, xyread, xywrite, xyioctl, 222 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 223 }; 224 225 struct xyc_attach_args { /* this is the "aux" args to xyattach */ 226 int driveno; /* unit number */ 227 int fullmode; /* submit mode */ 228 int booting; /* are we booting or not? */ 229 }; 230 231 /* 232 * dkdriver 233 */ 234 235 struct dkdriver xydkdriver = { xystrategy }; 236 237 /* 238 * start: disk label fix code (XXX) 239 */ 240 241 static void *xy_labeldata; 242 243 static void 244 xydummystrat(struct buf *bp) 245 { 246 if (bp->b_bcount != XYFM_BPS) 247 panic("xydummystrat"); 248 bcopy(xy_labeldata, bp->b_data, XYFM_BPS); 249 bp->b_oflags |= BO_DONE; 250 bp->b_cflags &= ~BC_BUSY; 251 } 252 253 int 254 xygetdisklabel(struct xy_softc *xy, void *b) 255 { 256 const char *err; 257 #if defined(__sparc__) || defined(sun3) 258 struct sun_disklabel *sdl; 259 #endif 260 261 /* We already have the label data in `b'; setup for dummy strategy */ 262 xy_labeldata = b; 263 264 /* Required parameter for readdisklabel() */ 265 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; 266 267 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xy->sc_dev), RAW_PART), 268 xydummystrat, 269 xy->sc_dk.dk_label, xy->sc_dk.dk_cpulabel); 270 if (err) { 271 printf("%s: %s\n", device_xname(&xy->sc_dev), err); 272 return(XY_ERR_FAIL); 273 } 274 275 #if defined(__sparc__) || defined(sun3) 276 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 277 sdl = (struct sun_disklabel *)xy->sc_dk.dk_cpulabel->cd_block; 278 if (sdl->sl_magic == SUN_DKMAGIC) { 279 xy->pcyl = sdl->sl_pcylinders; 280 } else 281 #endif 282 { 283 printf("%s: WARNING: no `pcyl' in disk label.\n", 284 device_xname(&xy->sc_dev)); 285 xy->pcyl = xy->sc_dk.dk_label->d_ncylinders + 286 xy->sc_dk.dk_label->d_acylinders; 287 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 288 device_xname(&xy->sc_dev), xy->pcyl); 289 } 290 291 xy->ncyl = xy->sc_dk.dk_label->d_ncylinders; 292 xy->acyl = xy->sc_dk.dk_label->d_acylinders; 293 xy->nhead = xy->sc_dk.dk_label->d_ntracks; 294 xy->nsect = xy->sc_dk.dk_label->d_nsectors; 295 xy->sectpercyl = xy->nhead * xy->nsect; 296 xy->sc_dk.dk_label->d_secsize = XYFM_BPS; /* not handled by 297 * sun->bsd */ 298 return(XY_ERR_AOK); 299 } 300 301 /* 302 * end: disk label fix code (XXX) 303 */ 304 305 /* 306 * Shorthand for allocating, mapping and loading a DMA buffer 307 */ 308 int 309 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) 310 { 311 int nseg; 312 int error; 313 314 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 315 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 316 return (error); 317 } 318 319 if ((error = bus_dmamem_map(tag, seg, nseg, 320 len, kvap, 321 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 322 bus_dmamem_free(tag, seg, nseg); 323 return (error); 324 } 325 326 if ((error = bus_dmamap_load(tag, map, *kvap, len, NULL, 327 BUS_DMA_NOWAIT)) != 0) { 328 bus_dmamem_unmap(tag, *kvap, len); 329 bus_dmamem_free(tag, seg, nseg); 330 return (error); 331 } 332 333 *dmap = map->dm_segs[0].ds_addr; 334 *nsegp = nseg; 335 return (0); 336 } 337 338 void 339 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) 340 { 341 342 bus_dmamap_unload(tag, map); 343 bus_dmamem_unmap(tag, kva, len); 344 bus_dmamem_free(tag, seg, nseg); 345 } 346 347 348 /* 349 * a u t o c o n f i g f u n c t i o n s 350 */ 351 352 /* 353 * xycmatch: determine if xyc is present or not. we do a 354 * soft reset to detect the xyc. 355 */ 356 int 357 xyc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 358 { 359 struct xyc *xyc = (void *)handle; /* XXX */ 360 361 return ((xyc_unbusy(xyc, XYC_RESETUSEC) != XY_ERR_FAIL) ? 0 : EIO); 362 } 363 364 int xycmatch(parent, cf, aux) 365 struct device *parent; 366 struct cfdata *cf; 367 void *aux; 368 { 369 struct vme_attach_args *va = aux; 370 vme_chipset_tag_t ct = va->va_vct; 371 vme_am_t mod; 372 int error; 373 374 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 375 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 376 return (0); 377 378 error = vme_probe(ct, va->r[0].offset, sizeof(struct xyc), 379 mod, VME_D16, xyc_probe, 0); 380 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xyc), mod); 381 382 return (error == 0); 383 } 384 385 /* 386 * xycattach: attach controller 387 */ 388 void 389 xycattach(parent, self, aux) 390 struct device *parent, *self; 391 void *aux; 392 393 { 394 struct xyc_softc *xyc = device_private(self); 395 struct vme_attach_args *va = aux; 396 vme_chipset_tag_t ct = va->va_vct; 397 bus_space_tag_t bt; 398 bus_space_handle_t bh; 399 vme_intr_handle_t ih; 400 vme_am_t mod; 401 struct xyc_attach_args xa; 402 int lcv, res, error; 403 bus_dma_segment_t seg; 404 int rseg; 405 vme_mapresc_t resc; 406 bus_addr_t busaddr; 407 408 /* get addressing and intr level stuff from autoconfig and load it 409 * into our xyc_softc. */ 410 411 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 412 413 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xyc), mod)) 414 panic("xyc: vme alloc"); 415 416 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xyc), 417 mod, VME_D16, 0, &bt, &bh, &resc) != 0) 418 panic("xyc: vme_map"); 419 420 xyc->xyc = (struct xyc *) bh; /* XXX */ 421 xyc->ipl = va->ilevel; 422 xyc->vector = va->ivector; 423 xyc->no_ols = 0; /* XXX should be from config */ 424 425 for (lcv = 0; lcv < XYC_MAXDEV; lcv++) 426 xyc->sc_drives[lcv] = (struct xy_softc *) 0; 427 428 /* 429 * allocate and zero buffers 430 * check boundaries of the KVA's ... all IOPBs must reside in 431 * the same 64K region. 432 */ 433 434 /* Get DMA handle for misc. transfers */ 435 if ((error = vme_dmamap_create( 436 ct, /* VME chip tag */ 437 MAXPHYS, /* size */ 438 VME_AM_A24, /* address modifier */ 439 VME_D16, /* data size */ 440 0, /* swap */ 441 1, /* nsegments */ 442 MAXPHYS, /* maxsegsz */ 443 0, /* boundary */ 444 BUS_DMA_NOWAIT, 445 &xyc->auxmap)) != 0) { 446 447 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 448 error); 449 return; 450 } 451 452 /* Get DMA handle for mapping iorq descriptors */ 453 if ((error = vme_dmamap_create( 454 ct, /* VME chip tag */ 455 XYC_MAXIOPB * sizeof(struct xy_iopb), 456 VME_AM_A24, /* address modifier */ 457 VME_D16, /* data size */ 458 0, /* swap */ 459 1, /* nsegments */ 460 XYC_MAXIOPB * sizeof(struct xy_iopb), 461 64*1024, /* boundary */ 462 BUS_DMA_NOWAIT, 463 &xyc->iopmap)) != 0) { 464 465 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 466 error); 467 return; 468 } 469 470 /* Get DMA buffer for iorq descriptors */ 471 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->iopmap, &seg, &rseg, 472 XYC_MAXIOPB * sizeof(struct xy_iopb), 473 (void **)&xyc->iopbase, 474 &busaddr)) != 0) { 475 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 476 error); 477 return; 478 } 479 xyc->dvmaiopb = (struct xy_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 480 481 bzero(xyc->iopbase, XYC_MAXIOPB * sizeof(struct xy_iopb)); 482 483 xyc->reqs = (struct xy_iorq *) 484 malloc(XYC_MAXIOPB * sizeof(struct xy_iorq), 485 M_DEVBUF, M_NOWAIT|M_ZERO); 486 if (xyc->reqs == NULL) 487 panic("xyc malloc"); 488 489 /* 490 * init iorq to iopb pointers, and non-zero fields in the 491 * iopb which never change. 492 */ 493 494 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 495 xyc->xy_chain[lcv] = NULL; 496 xyc->reqs[lcv].iopb = &xyc->iopbase[lcv]; 497 xyc->reqs[lcv].dmaiopb = &xyc->dvmaiopb[lcv]; 498 xyc->iopbase[lcv].asr = 1; /* always the same */ 499 xyc->iopbase[lcv].eef = 1; /* always the same */ 500 xyc->iopbase[lcv].ecm = XY_ECM; /* always the same */ 501 xyc->iopbase[lcv].aud = 1; /* always the same */ 502 xyc->iopbase[lcv].relo = 1; /* always the same */ 503 xyc->iopbase[lcv].thro = XY_THRO;/* always the same */ 504 505 if ((error = vme_dmamap_create( 506 ct, /* VME chip tag */ 507 MAXPHYS, /* size */ 508 VME_AM_A24, /* address modifier */ 509 VME_D16, /* data size */ 510 0, /* swap */ 511 1, /* nsegments */ 512 MAXPHYS, /* maxsegsz */ 513 0, /* boundary */ 514 BUS_DMA_NOWAIT, 515 &xyc->reqs[lcv].dmamap)) != 0) { 516 517 aprint_error_dev(&xyc->sc_dev, "DMA buffer map create error %d\n", 518 error); 519 return; 520 } 521 } 522 xyc->ciorq = &xyc->reqs[XYC_CTLIOPB]; /* short hand name */ 523 xyc->ciopb = &xyc->iopbase[XYC_CTLIOPB]; /* short hand name */ 524 xyc->xy_hand = 0; 525 526 /* read controller parameters and insure we have a 450/451 */ 527 528 error = xyc_cmd(xyc, XYCMD_ST, 0, 0, 0, 0, 0, XY_SUB_POLL); 529 res = xyc->ciopb->ctyp; 530 XYC_DONE(xyc, error); 531 if (res != XYCT_450) { 532 if (error) 533 printf(": %s: ", xyc_e2str(error)); 534 printf(": doesn't identify as a 450/451\n"); 535 return; 536 } 537 printf(": Xylogics 450/451"); 538 if (xyc->no_ols) 539 printf(" [OLS disabled]"); /* 450 doesn't overlap seek right */ 540 printf("\n"); 541 if (error) { 542 aprint_error_dev(&xyc->sc_dev, "error: %s\n", 543 xyc_e2str(error)); 544 return; 545 } 546 if ((xyc->xyc->xyc_csr & XYC_ADRM) == 0) { 547 printf("%s: 24 bit addressing turned off\n", 548 device_xname(&xyc->sc_dev)); 549 printf("please set hardware jumpers JM1-JM2=in, JM3-JM4=out\n"); 550 printf("to enable 24 bit mode and this driver\n"); 551 return; 552 } 553 554 /* link in interrupt with higher level software */ 555 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 556 vme_intr_establish(ct, ih, IPL_BIO, xycintr, xyc); 557 evcnt_attach_dynamic(&xyc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 558 device_xname(&xyc->sc_dev), "intr"); 559 560 callout_init(&xyc->sc_tick_ch, 0); 561 562 /* now we must look for disks using autoconfig */ 563 xa.fullmode = XY_SUB_POLL; 564 xa.booting = 1; 565 566 for (xa.driveno = 0; xa.driveno < XYC_MAXDEV; xa.driveno++) 567 (void) config_found(self, (void *) &xa, NULL); 568 569 /* start the watchdog clock */ 570 callout_reset(&xyc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xyc); 571 572 } 573 574 /* 575 * xymatch: probe for disk. 576 * 577 * note: we almost always say disk is present. this allows us to 578 * spin up and configure a disk after the system is booted (we can 579 * call xyattach!). 580 */ 581 int 582 xymatch(struct device *parent, struct cfdata *cf, void *aux) 583 { 584 struct xyc_attach_args *xa = aux; 585 586 /* looking for autoconf wildcard or exact match */ 587 588 if (cf->cf_loc[XYCCF_DRIVE] != XYCCF_DRIVE_DEFAULT && 589 cf->cf_loc[XYCCF_DRIVE] != xa->driveno) 590 return 0; 591 592 return 1; 593 594 } 595 596 /* 597 * xyattach: attach a disk. this can be called from autoconf and also 598 * from xyopen/xystrategy. 599 */ 600 void 601 xyattach(parent, self, aux) 602 struct device *parent, *self; 603 void *aux; 604 605 { 606 struct xy_softc *xy = device_private(self), *oxy; 607 struct xyc_softc *xyc = device_private(parent); 608 struct xyc_attach_args *xa = aux; 609 int spt, mb, blk, lcv, fmode, s = 0, newstate; 610 struct dkbad *dkb; 611 int rseg, error; 612 bus_dma_segment_t seg; 613 bus_addr_t busaddr; 614 void * dmaddr; 615 char * buf; 616 617 /* 618 * Always re-initialize the disk structure. We want statistics 619 * to start with a clean slate. 620 */ 621 bzero(&xy->sc_dk, sizeof(xy->sc_dk)); 622 623 /* if booting, init the xy_softc */ 624 625 if (xa->booting) { 626 xy->state = XY_DRIVE_UNKNOWN; /* to start */ 627 xy->flags = 0; 628 xy->parent = xyc; 629 630 /* init queue of waiting bufs */ 631 632 bufq_alloc(&xy->xyq, "disksort", BUFQ_SORT_RAWBLOCK); 633 634 xy->xyrq = &xyc->reqs[xa->driveno]; 635 636 } 637 xy->xy_drive = xa->driveno; 638 fmode = xa->fullmode; 639 xyc->sc_drives[xa->driveno] = xy; 640 641 /* if not booting, make sure we are the only process in the attach for 642 * this drive. if locked out, sleep on it. */ 643 644 if (!xa->booting) { 645 s = splbio(); 646 while (xy->state == XY_DRIVE_ATTACHING) { 647 if (tsleep(&xy->state, PRIBIO, "xyattach", 0)) { 648 splx(s); 649 return; 650 } 651 } 652 printf("%s at %s", 653 device_xname(&xy->sc_dev), device_xname(&xy->parent->sc_dev)); 654 } 655 656 /* we now have control */ 657 xy->state = XY_DRIVE_ATTACHING; 658 newstate = XY_DRIVE_UNKNOWN; 659 660 buf = NULL; 661 if ((error = xy_dmamem_alloc(xyc->dmatag, xyc->auxmap, &seg, &rseg, 662 XYFM_BPS, 663 (void **)&buf, 664 &busaddr)) != 0) { 665 aprint_error_dev(&xyc->sc_dev, "DMA buffer alloc error %d\n", 666 error); 667 return; 668 } 669 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 670 671 /* first try and reset the drive */ 672 error = xyc_cmd(xyc, XYCMD_RST, 0, xy->xy_drive, 0, 0, 0, fmode); 673 XYC_DONE(xyc, error); 674 if (error == XY_ERR_DNRY) { 675 printf(" drive %d: off-line\n", xa->driveno); 676 goto done; 677 } 678 if (error) { 679 printf(": ERROR 0x%02x (%s)\n", error, xyc_e2str(error)); 680 goto done; 681 } 682 printf(" drive %d: ready", xa->driveno); 683 684 /* 685 * now set drive parameters (to semi-bogus values) so we can read the 686 * disk label. 687 */ 688 xy->pcyl = xy->ncyl = 1; 689 xy->acyl = 0; 690 xy->nhead = 1; 691 xy->nsect = 1; 692 xy->sectpercyl = 1; 693 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 694 xy->dkb.bt_bad[lcv].bt_cyl = 695 xy->dkb.bt_bad[lcv].bt_trksec = 0xffff; 696 697 /* read disk label */ 698 for (xy->drive_type = 0 ; xy->drive_type <= XYC_MAXDT ; 699 xy->drive_type++) { 700 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, 0, 1, 701 dmaddr, fmode); 702 XYC_DONE(xyc, error); 703 if (error == XY_ERR_AOK) break; 704 } 705 706 if (error != XY_ERR_AOK) { 707 aprint_normal("\n"); 708 aprint_error_dev(&xy->sc_dev, "reading disk label failed: %s\n", 709 xyc_e2str(error)); 710 goto done; 711 } 712 printf(" (drive type %d)\n", xy->drive_type); 713 714 newstate = XY_DRIVE_NOLABEL; 715 716 xy->hw_spt = spt = 0; /* XXX needed ? */ 717 /* Attach the disk: must be before getdisklabel to malloc label */ 718 disk_init(&xy->sc_dk, device_xname(&xy->sc_dev), &xydkdriver); 719 disk_attach(&xy->sc_dk); 720 721 if (xygetdisklabel(xy, buf) != XY_ERR_AOK) 722 goto done; 723 724 /* inform the user of what is up */ 725 printf("%s: <%s>, pcyl %d\n", device_xname(&xy->sc_dev), 726 buf, xy->pcyl); 727 mb = xy->ncyl * (xy->nhead * xy->nsect) / (1048576 / XYFM_BPS); 728 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 729 device_xname(&xy->sc_dev), mb, xy->ncyl, xy->nhead, xy->nsect, 730 XYFM_BPS); 731 732 /* 733 * 450/451 stupidity: the drive type is encoded into the format 734 * of the disk. the drive type in the IOPB must match the drive 735 * type in the format, or you will not be able to do I/O to the 736 * disk (you get header not found errors). if you have two drives 737 * of different sizes that have the same drive type in their 738 * formatting then you are out of luck. 739 * 740 * this problem was corrected in the 753/7053. 741 */ 742 743 for (lcv = 0 ; lcv < XYC_MAXDEV ; lcv++) { 744 oxy = xyc->sc_drives[lcv]; 745 if (oxy == NULL || oxy == xy) continue; 746 if (oxy->drive_type != xy->drive_type) continue; 747 if (xy->nsect != oxy->nsect || xy->pcyl != oxy->pcyl || 748 xy->nhead != oxy->nhead) { 749 printf("%s: %s and %s must be the same size!\n", 750 device_xname(&xyc->sc_dev), device_xname(&xy->sc_dev), 751 device_xname(&oxy->sc_dev)); 752 panic("xy drive size mismatch"); 753 } 754 } 755 756 757 /* now set the real drive parameters! */ 758 759 blk = (xy->nsect - 1) + 760 ((xy->nhead - 1) * xy->nsect) + 761 ((xy->pcyl - 1) * xy->nsect * xy->nhead); 762 error = xyc_cmd(xyc, XYCMD_SDS, 0, xy->xy_drive, blk, 0, 0, fmode); 763 XYC_DONE(xyc, error); 764 if (error) { 765 aprint_error_dev(&xy->sc_dev, "write drive size failed: %s\n", 766 xyc_e2str(error)); 767 goto done; 768 } 769 newstate = XY_DRIVE_ONLINE; 770 771 /* 772 * read bad144 table. this table resides on the first sector of the 773 * last track of the disk (i.e. second cyl of "acyl" area). 774 */ 775 776 blk = (xy->ncyl + xy->acyl - 1) * (xy->nhead * xy->nsect) + 777 /* last cyl */ 778 (xy->nhead - 1) * xy->nsect; /* last head */ 779 error = xyc_cmd(xyc, XYCMD_RD, 0, xy->xy_drive, blk, 1, 780 dmaddr, fmode); 781 XYC_DONE(xyc, error); 782 if (error) { 783 aprint_error_dev(&xy->sc_dev, "reading bad144 failed: %s\n", 784 xyc_e2str(error)); 785 goto done; 786 } 787 788 /* check dkbad for sanity */ 789 dkb = (struct dkbad *) buf; 790 for (lcv = 0; lcv < 126; lcv++) { 791 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 792 dkb->bt_bad[lcv].bt_cyl == 0) && 793 dkb->bt_bad[lcv].bt_trksec == 0xffff) 794 continue; /* blank */ 795 if (dkb->bt_bad[lcv].bt_cyl >= xy->ncyl) 796 break; 797 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xy->nhead) 798 break; 799 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xy->nsect) 800 break; 801 } 802 if (lcv != 126) { 803 aprint_error_dev(&xy->sc_dev, "warning: invalid bad144 sector!\n"); 804 } else { 805 bcopy(buf, &xy->dkb, XYFM_BPS); 806 } 807 808 done: 809 if (buf != NULL) { 810 xy_dmamem_free(xyc->dmatag, xyc->auxmap, 811 &seg, rseg, XYFM_BPS, buf); 812 } 813 814 xy->state = newstate; 815 if (!xa->booting) { 816 wakeup(&xy->state); 817 splx(s); 818 } 819 } 820 821 /* 822 * end of autoconfig functions 823 */ 824 825 /* 826 * { b , c } d e v s w f u n c t i o n s 827 */ 828 829 /* 830 * xyclose: close device 831 */ 832 int 833 xyclose(dev, flag, fmt, l) 834 dev_t dev; 835 int flag, fmt; 836 struct lwp *l; 837 838 { 839 struct xy_softc *xy = device_lookup_private(&xy_cd, DISKUNIT(dev)); 840 int part = DISKPART(dev); 841 842 /* clear mask bits */ 843 844 switch (fmt) { 845 case S_IFCHR: 846 xy->sc_dk.dk_copenmask &= ~(1 << part); 847 break; 848 case S_IFBLK: 849 xy->sc_dk.dk_bopenmask &= ~(1 << part); 850 break; 851 } 852 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 853 854 return 0; 855 } 856 857 /* 858 * xydump: crash dump system 859 */ 860 int 861 xydump(dev_t dev, daddr_t blkno, void *va, size_t size) 862 { 863 int unit, part; 864 struct xy_softc *xy; 865 866 unit = DISKUNIT(dev); 867 part = DISKPART(dev); 868 869 xy = device_lookup_private(&xy_cd, unit); 870 if (!xy) 871 return ENXIO; 872 873 printf("%s%c: crash dump not supported (yet)\n", device_xname(&xy->sc_dev), 874 'a' + part); 875 876 return ENXIO; 877 878 /* outline: globals: "dumplo" == sector number of partition to start 879 * dump at (convert to physical sector with partition table) 880 * "dumpsize" == size of dump in clicks "physmem" == size of physical 881 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 882 * physmem) 883 * 884 * dump a copy of physical memory to the dump device starting at sector 885 * "dumplo" in the swap partition (make sure > 0). map in pages as 886 * we go. use polled I/O. 887 * 888 * XXX how to handle NON_CONTIG? */ 889 890 } 891 892 static enum kauth_device_req 893 xy_getkauthreq(u_char cmd) 894 { 895 enum kauth_device_req req; 896 897 switch (cmd) { 898 case XYCMD_WR: 899 case XYCMD_WTH: 900 case XYCMD_WFM: 901 case XYCMD_WRH: 902 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 903 break; 904 905 case XYCMD_RD: 906 case XYCMD_RTH: 907 case XYCMD_RDH: 908 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 909 break; 910 911 case XYCMD_RDS: 912 case XYCMD_MBD: 913 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 914 break; 915 916 case XYCMD_RST: 917 case XYCMD_SDS: 918 case XYCMD_MBL: 919 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 920 break; 921 922 case XYCMD_NOP: 923 case XYCMD_SK: 924 case XYCMD_ST: 925 case XYCMD_R: 926 default: 927 req = 0; 928 break; 929 } 930 931 return (req); 932 } 933 934 /* 935 * xyioctl: ioctls on XY drives. based on ioctl's of other netbsd disks. 936 */ 937 int 938 xyioctl(dev, command, addr, flag, l) 939 dev_t dev; 940 u_long command; 941 void *addr; 942 int flag; 943 struct lwp *l; 944 945 { 946 struct xy_softc *xy; 947 struct xd_iocmd *xio; 948 int error, s, unit; 949 #ifdef __HAVE_OLD_DISKLABEL 950 struct disklabel newlabel; 951 #endif 952 struct disklabel *lp; 953 954 unit = DISKUNIT(dev); 955 956 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 957 return (ENXIO); 958 959 /* switch on ioctl type */ 960 961 switch (command) { 962 case DIOCSBAD: /* set bad144 info */ 963 if ((flag & FWRITE) == 0) 964 return EBADF; 965 s = splbio(); 966 bcopy(addr, &xy->dkb, sizeof(xy->dkb)); 967 splx(s); 968 return 0; 969 970 case DIOCGDINFO: /* get disk label */ 971 bcopy(xy->sc_dk.dk_label, addr, sizeof(struct disklabel)); 972 return 0; 973 #ifdef __HAVE_OLD_DISKLABEL 974 case ODIOCGDINFO: 975 newlabel = *(xy->sc_dk.dk_label); 976 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 977 return ENOTTY; 978 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 979 return 0; 980 #endif 981 982 case DIOCGPART: /* get partition info */ 983 ((struct partinfo *) addr)->disklab = xy->sc_dk.dk_label; 984 ((struct partinfo *) addr)->part = 985 &xy->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 986 return 0; 987 988 case DIOCSDINFO: /* set disk label */ 989 #ifdef __HAVE_OLD_DISKLABEL 990 case ODIOCSDINFO: 991 if (command == ODIOCSDINFO) { 992 memset(&newlabel, 0, sizeof newlabel); 993 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 994 lp = &newlabel; 995 } else 996 #endif 997 lp = (struct disklabel *)addr; 998 999 if ((flag & FWRITE) == 0) 1000 return EBADF; 1001 error = setdisklabel(xy->sc_dk.dk_label, 1002 lp, /* xy->sc_dk.dk_openmask : */ 0, 1003 xy->sc_dk.dk_cpulabel); 1004 if (error == 0) { 1005 if (xy->state == XY_DRIVE_NOLABEL) 1006 xy->state = XY_DRIVE_ONLINE; 1007 } 1008 return error; 1009 1010 case DIOCWLABEL: /* change write status of disk label */ 1011 if ((flag & FWRITE) == 0) 1012 return EBADF; 1013 if (*(int *) addr) 1014 xy->flags |= XY_WLABEL; 1015 else 1016 xy->flags &= ~XY_WLABEL; 1017 return 0; 1018 1019 case DIOCWDINFO: /* write disk label */ 1020 #ifdef __HAVE_OLD_DISKLABEL 1021 case ODIOCWDINFO: 1022 if (command == ODIOCWDINFO) { 1023 memset(&newlabel, 0, sizeof newlabel); 1024 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1025 lp = &newlabel; 1026 } else 1027 #endif 1028 lp = (struct disklabel *)addr; 1029 1030 if ((flag & FWRITE) == 0) 1031 return EBADF; 1032 error = setdisklabel(xy->sc_dk.dk_label, 1033 lp, /* xy->sc_dk.dk_openmask : */ 0, 1034 xy->sc_dk.dk_cpulabel); 1035 if (error == 0) { 1036 if (xy->state == XY_DRIVE_NOLABEL) 1037 xy->state = XY_DRIVE_ONLINE; 1038 1039 /* Simulate opening partition 0 so write succeeds. */ 1040 xy->sc_dk.dk_openmask |= (1 << 0); 1041 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1042 xystrategy, xy->sc_dk.dk_label, 1043 xy->sc_dk.dk_cpulabel); 1044 xy->sc_dk.dk_openmask = 1045 xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1046 } 1047 return error; 1048 1049 case DIOSXDCMD: { 1050 enum kauth_device_req req; 1051 1052 xio = (struct xd_iocmd *) addr; 1053 req = xy_getkauthreq(xio->cmd); 1054 if ((error = kauth_authorize_device_passthru(l->l_cred, 1055 dev, req, xio)) != 0) 1056 return (error); 1057 return (xyc_ioctlcmd(xy, dev, xio)); 1058 } 1059 1060 default: 1061 return ENOTTY; 1062 } 1063 } 1064 1065 /* 1066 * xyopen: open drive 1067 */ 1068 1069 int 1070 xyopen(dev, flag, fmt, l) 1071 dev_t dev; 1072 int flag, fmt; 1073 struct lwp *l; 1074 { 1075 int unit, part; 1076 struct xy_softc *xy; 1077 struct xyc_attach_args xa; 1078 1079 /* first, could it be a valid target? */ 1080 1081 unit = DISKUNIT(dev); 1082 if ((xy = device_lookup_private(&xy_cd, unit)) == NULL) 1083 return (ENXIO); 1084 part = DISKPART(dev); 1085 1086 /* do we need to attach the drive? */ 1087 1088 if (xy->state == XY_DRIVE_UNKNOWN) { 1089 xa.driveno = xy->xy_drive; 1090 xa.fullmode = XY_SUB_WAIT; 1091 xa.booting = 0; 1092 xyattach((struct device *) xy->parent, 1093 (struct device *) xy, &xa); 1094 if (xy->state == XY_DRIVE_UNKNOWN) { 1095 return (EIO); 1096 } 1097 } 1098 /* check for partition */ 1099 1100 if (part != RAW_PART && 1101 (part >= xy->sc_dk.dk_label->d_npartitions || 1102 xy->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1103 return (ENXIO); 1104 } 1105 /* set open masks */ 1106 1107 switch (fmt) { 1108 case S_IFCHR: 1109 xy->sc_dk.dk_copenmask |= (1 << part); 1110 break; 1111 case S_IFBLK: 1112 xy->sc_dk.dk_bopenmask |= (1 << part); 1113 break; 1114 } 1115 xy->sc_dk.dk_openmask = xy->sc_dk.dk_copenmask | xy->sc_dk.dk_bopenmask; 1116 1117 return 0; 1118 } 1119 1120 int 1121 xyread(dev_t dev, struct uio *uio, int flags) 1122 { 1123 1124 return (physio(xystrategy, NULL, dev, B_READ, minphys, uio)); 1125 } 1126 1127 int 1128 xywrite(dev_t dev, struct uio *uio, int flags) 1129 { 1130 1131 return (physio(xystrategy, NULL, dev, B_WRITE, minphys, uio)); 1132 } 1133 1134 1135 /* 1136 * xysize: return size of a partition for a dump 1137 */ 1138 1139 int 1140 xysize(dev) 1141 dev_t dev; 1142 1143 { 1144 struct xy_softc *xysc; 1145 int unit, part, size, omask; 1146 1147 /* valid unit? */ 1148 unit = DISKUNIT(dev); 1149 if ((xysc = device_lookup_private(&xy_cd, unit)) == NULL) 1150 return (-1); 1151 1152 part = DISKPART(dev); 1153 omask = xysc->sc_dk.dk_openmask & (1 << part); 1154 1155 if (omask == 0 && xyopen(dev, 0, S_IFBLK, NULL) != 0) 1156 return (-1); 1157 1158 /* do it */ 1159 if (xysc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1160 size = -1; /* only give valid size for swap partitions */ 1161 else 1162 size = xysc->sc_dk.dk_label->d_partitions[part].p_size * 1163 (xysc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1164 if (omask == 0 && xyclose(dev, 0, S_IFBLK, NULL) != 0) 1165 return (-1); 1166 return (size); 1167 } 1168 1169 /* 1170 * xystrategy: buffering system interface to xy. 1171 */ 1172 1173 void 1174 xystrategy(bp) 1175 struct buf *bp; 1176 1177 { 1178 struct xy_softc *xy; 1179 int s, unit; 1180 struct xyc_attach_args xa; 1181 struct disklabel *lp; 1182 daddr_t blkno; 1183 1184 unit = DISKUNIT(bp->b_dev); 1185 1186 /* check for live device */ 1187 1188 if (!(xy = device_lookup_private(&xy_cd, unit)) || 1189 bp->b_blkno < 0 || 1190 (bp->b_bcount % xy->sc_dk.dk_label->d_secsize) != 0) { 1191 bp->b_error = EINVAL; 1192 goto done; 1193 } 1194 /* do we need to attach the drive? */ 1195 1196 if (xy->state == XY_DRIVE_UNKNOWN) { 1197 xa.driveno = xy->xy_drive; 1198 xa.fullmode = XY_SUB_WAIT; 1199 xa.booting = 0; 1200 xyattach((struct device *)xy->parent, (struct device *)xy, &xa); 1201 if (xy->state == XY_DRIVE_UNKNOWN) { 1202 bp->b_error = EIO; 1203 goto done; 1204 } 1205 } 1206 if (xy->state != XY_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1207 /* no I/O to unlabeled disks, unless raw partition */ 1208 bp->b_error = EIO; 1209 goto done; 1210 } 1211 /* short circuit zero length request */ 1212 1213 if (bp->b_bcount == 0) 1214 goto done; 1215 1216 /* check bounds with label (disksubr.c). Determine the size of the 1217 * transfer, and make sure it is within the boundaries of the 1218 * partition. Adjust transfer if needed, and signal errors or early 1219 * completion. */ 1220 1221 lp = xy->sc_dk.dk_label; 1222 1223 if (bounds_check_with_label(&xy->sc_dk, bp, 1224 (xy->flags & XY_WLABEL) != 0) <= 0) 1225 goto done; 1226 1227 /* 1228 * Now convert the block number to absolute and put it in 1229 * terms of the device's logical block size. 1230 */ 1231 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 1232 if (DISKPART(bp->b_dev) != RAW_PART) 1233 blkno += lp->d_partitions[DISKPART(bp->b_dev)].p_offset; 1234 1235 bp->b_rawblkno = blkno; 1236 1237 /* 1238 * now we know we have a valid buf structure that we need to do I/O 1239 * on. 1240 */ 1241 s = splbio(); /* protect the queues */ 1242 1243 bufq_put(xy->xyq, bp); 1244 1245 /* start 'em up */ 1246 1247 xyc_start(xy->parent, NULL); 1248 1249 /* done! */ 1250 1251 splx(s); 1252 return; 1253 1254 done: /* tells upper layers we are done with this 1255 * buf */ 1256 bp->b_resid = bp->b_bcount; 1257 biodone(bp); 1258 } 1259 /* 1260 * end of {b,c}devsw functions 1261 */ 1262 1263 /* 1264 * i n t e r r u p t f u n c t i o n 1265 * 1266 * xycintr: hardware interrupt. 1267 */ 1268 int 1269 xycintr(v) 1270 void *v; 1271 1272 { 1273 struct xyc_softc *xycsc = v; 1274 1275 /* kick the event counter */ 1276 1277 xycsc->sc_intrcnt.ev_count++; 1278 1279 /* remove as many done IOPBs as possible */ 1280 1281 xyc_remove_iorq(xycsc); 1282 1283 /* start any iorq's already waiting */ 1284 1285 xyc_start(xycsc, NULL); 1286 1287 return (1); 1288 } 1289 /* 1290 * end of interrupt function 1291 */ 1292 1293 /* 1294 * i n t e r n a l f u n c t i o n s 1295 */ 1296 1297 /* 1298 * xyc_rqinit: fill out the fields of an I/O request 1299 */ 1300 1301 inline void 1302 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) 1303 { 1304 rq->xyc = xyc; 1305 rq->xy = xy; 1306 rq->ttl = XYC_MAXTTL + 10; 1307 rq->mode = md; 1308 rq->tries = rq->errnum = rq->lasterror = 0; 1309 rq->blockno = blk; 1310 rq->sectcnt = cnt; 1311 rq->dbuf = db; 1312 rq->buf = bp; 1313 } 1314 1315 /* 1316 * xyc_rqtopb: load up an IOPB based on an iorq 1317 */ 1318 1319 void 1320 xyc_rqtopb(iorq, iopb, cmd, subfun) 1321 struct xy_iorq *iorq; 1322 struct xy_iopb *iopb; 1323 int cmd, subfun; 1324 1325 { 1326 u_long block, dp; 1327 1328 /* normal IOPB case, standard stuff */ 1329 1330 /* chain bit handled later */ 1331 iopb->ien = (XY_STATE(iorq->mode) == XY_SUB_POLL) ? 0 : 1; 1332 iopb->com = cmd; 1333 iopb->errnum = 0; 1334 iopb->errs = 0; 1335 iopb->done = 0; 1336 if (iorq->xy) { 1337 iopb->unit = iorq->xy->xy_drive; 1338 iopb->dt = iorq->xy->drive_type; 1339 } else { 1340 iopb->unit = 0; 1341 iopb->dt = 0; 1342 } 1343 block = iorq->blockno; 1344 if (iorq->xy == NULL || block == 0) { 1345 iopb->sect = iopb->head = iopb->cyl = 0; 1346 } else { 1347 iopb->sect = block % iorq->xy->nsect; 1348 block = block / iorq->xy->nsect; 1349 iopb->head = block % iorq->xy->nhead; 1350 block = block / iorq->xy->nhead; 1351 iopb->cyl = block; 1352 } 1353 iopb->scnt = iorq->sectcnt; 1354 dp = (u_long) iorq->dbuf; 1355 if (iorq->dbuf == NULL) { 1356 iopb->dataa = 0; 1357 iopb->datar = 0; 1358 } else { 1359 iopb->dataa = (dp & 0xffff); 1360 iopb->datar = ((dp & 0xff0000) >> 16); 1361 } 1362 iopb->subfn = subfun; 1363 } 1364 1365 1366 /* 1367 * xyc_unbusy: wait for the xyc to go unbusy, or timeout. 1368 */ 1369 1370 int 1371 xyc_unbusy(xyc, del) 1372 1373 struct xyc *xyc; 1374 int del; 1375 1376 { 1377 while (del-- > 0) { 1378 if ((xyc->xyc_csr & XYC_GBSY) == 0) 1379 break; 1380 DELAY(1); 1381 } 1382 return(del == 0 ? XY_ERR_FAIL : XY_ERR_AOK); 1383 } 1384 1385 /* 1386 * xyc_cmd: front end for POLL'd and WAIT'd commands. Returns 0 or error. 1387 * note that NORM requests are handled separately. 1388 */ 1389 int 1390 xyc_cmd(xycsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1391 struct xyc_softc *xycsc; 1392 int cmd, subfn, unit, block, scnt; 1393 char *dptr; 1394 int fullmode; 1395 1396 { 1397 int submode = XY_STATE(fullmode); 1398 struct xy_iorq *iorq = xycsc->ciorq; 1399 struct xy_iopb *iopb = xycsc->ciopb; 1400 1401 /* 1402 * is someone else using the control iopq wait for it if we can 1403 */ 1404 start: 1405 if (submode == XY_SUB_WAIT && XY_STATE(iorq->mode) != XY_SUB_FREE) { 1406 if (tsleep(iorq, PRIBIO, "xyc_cmd", 0)) 1407 return(XY_ERR_FAIL); 1408 goto start; 1409 } 1410 1411 if (XY_STATE(iorq->mode) != XY_SUB_FREE) { 1412 DELAY(1000000); /* XY_SUB_POLL: steal the iorq */ 1413 iorq->mode = XY_SUB_FREE; 1414 printf("%s: stole control iopb\n", device_xname(&xycsc->sc_dev)); 1415 } 1416 1417 /* init iorq/iopb */ 1418 1419 xyc_rqinit(iorq, xycsc, 1420 (unit == XYC_NOUNIT) ? NULL : xycsc->sc_drives[unit], 1421 fullmode, block, scnt, dptr, NULL); 1422 1423 /* load IOPB from iorq */ 1424 1425 xyc_rqtopb(iorq, iopb, cmd, subfn); 1426 1427 /* submit it for processing */ 1428 1429 xyc_submit_iorq(xycsc, iorq, fullmode); /* error code will be in iorq */ 1430 1431 return(XY_ERR_AOK); 1432 } 1433 1434 /* 1435 * xyc_startbuf 1436 * start a buffer for running 1437 */ 1438 1439 int 1440 xyc_startbuf(xycsc, xysc, bp) 1441 struct xyc_softc *xycsc; 1442 struct xy_softc *xysc; 1443 struct buf *bp; 1444 1445 { 1446 int partno, error; 1447 struct xy_iorq *iorq; 1448 struct xy_iopb *iopb; 1449 u_long block; 1450 1451 iorq = xysc->xyrq; 1452 iopb = iorq->iopb; 1453 1454 /* get buf */ 1455 1456 if (bp == NULL) 1457 panic("xyc_startbuf null buf"); 1458 1459 partno = DISKPART(bp->b_dev); 1460 #ifdef XYC_DEBUG 1461 printf("xyc_startbuf: %s%c: %s block %d\n", device_xname(&xysc->sc_dev), 1462 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1463 printf("xyc_startbuf: b_bcount %d, b_data 0x%x\n", 1464 bp->b_bcount, bp->b_data); 1465 #endif 1466 1467 /* 1468 * load request. 1469 * 1470 * note that iorq points to the buffer as mapped into DVMA space, 1471 * where as the bp->b_data points to its non-DVMA mapping. 1472 */ 1473 1474 block = bp->b_rawblkno; 1475 1476 error = bus_dmamap_load(xycsc->dmatag, iorq->dmamap, 1477 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1478 if (error != 0) { 1479 aprint_error_dev(&xycsc->sc_dev, "warning: cannot load DMA map\n"); 1480 return (XY_ERR_FAIL); /* XXX: need some sort of 1481 * call-back scheme here? */ 1482 } 1483 1484 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1485 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1486 ? BUS_DMASYNC_PREREAD 1487 : BUS_DMASYNC_PREWRITE); 1488 1489 /* init iorq and load iopb from it */ 1490 xyc_rqinit(iorq, xycsc, xysc, XY_SUB_NORM | XY_MODE_VERBO, block, 1491 bp->b_bcount / XYFM_BPS, 1492 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1493 bp); 1494 1495 xyc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XYCMD_RD : XYCMD_WR, 0); 1496 1497 /* Instrumentation. */ 1498 disk_busy(&xysc->sc_dk); 1499 1500 return (XY_ERR_AOK); 1501 } 1502 1503 1504 /* 1505 * xyc_submit_iorq: submit an iorq for processing. returns XY_ERR_AOK 1506 * if ok. if it fail returns an error code. type is XY_SUB_*. 1507 * 1508 * note: caller frees iorq in all cases except NORM 1509 * 1510 * return value: 1511 * NORM: XY_AOK (req pending), XY_FAIL (couldn't submit request) 1512 * WAIT: XY_AOK (success), <error-code> (failed) 1513 * POLL: <same as WAIT> 1514 * NOQ : <same as NORM> 1515 * 1516 * there are three sources for i/o requests: 1517 * [1] xystrategy: normal block I/O, using "struct buf" system. 1518 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1519 * [3] open/ioctl: these are I/O requests done in the context of a process, 1520 * and the process should block until they are done. 1521 * 1522 * software state is stored in the iorq structure. each iorq has an 1523 * iopb structure. the hardware understands the iopb structure. 1524 * every command must go through an iopb. a 450 handles one iopb at a 1525 * time, where as a 451 can take them in chains. [the 450 claims it 1526 * can handle chains, but is appears to be buggy...] iopb are allocated 1527 * in DVMA space at boot up time. each disk gets one iopb, and the 1528 * controller gets one (for POLL and WAIT commands). what happens if 1529 * the iopb is busy? for i/o type [1], the buffers are queued at the 1530 * "buff" layer and * picked up later by the interrupt routine. for case 1531 * [2] we can only be blocked if there is a WAIT type I/O request being 1532 * run. since this can only happen when we are crashing, we wait a sec 1533 * and then steal the IOPB. for case [3] the process can sleep 1534 * on the iorq free list until some iopbs are available. 1535 */ 1536 1537 1538 int 1539 xyc_submit_iorq(xycsc, iorq, type) 1540 struct xyc_softc *xycsc; 1541 struct xy_iorq *iorq; 1542 int type; 1543 1544 { 1545 struct xy_iopb *dmaiopb; 1546 1547 #ifdef XYC_DEBUG 1548 printf("xyc_submit_iorq(%s, addr=0x%x, type=%d)\n", 1549 device_xname(&xycsc->sc_dev), iorq, type); 1550 #endif 1551 1552 /* first check and see if controller is busy */ 1553 if ((xycsc->xyc->xyc_csr & XYC_GBSY) != 0) { 1554 #ifdef XYC_DEBUG 1555 printf("xyc_submit_iorq: XYC not ready (BUSY)\n"); 1556 #endif 1557 if (type == XY_SUB_NOQ) 1558 return (XY_ERR_FAIL); /* failed */ 1559 switch (type) { 1560 case XY_SUB_NORM: 1561 return XY_ERR_AOK; /* success */ 1562 case XY_SUB_WAIT: 1563 while (iorq->iopb->done == 0) { 1564 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1565 } 1566 return (iorq->errnum); 1567 case XY_SUB_POLL: /* steal controller */ 1568 (void)xycsc->xyc->xyc_rsetup; /* RESET */ 1569 if (xyc_unbusy(xycsc->xyc,XYC_RESETUSEC) == XY_ERR_FAIL) 1570 panic("xyc_submit_iorq: stuck xyc"); 1571 printf("%s: stole controller\n", 1572 device_xname(&xycsc->sc_dev)); 1573 break; 1574 default: 1575 panic("xyc_submit_iorq adding"); 1576 } 1577 } 1578 1579 dmaiopb = xyc_chain(xycsc, iorq); /* build chain */ 1580 if (dmaiopb == NULL) { /* nothing doing? */ 1581 if (type == XY_SUB_NORM || type == XY_SUB_NOQ) 1582 return(XY_ERR_AOK); 1583 panic("xyc_submit_iorq: xyc_chain failed!"); 1584 } 1585 1586 XYC_GO(xycsc->xyc, dmaiopb); 1587 1588 /* command now running, wrap it up */ 1589 switch (type) { 1590 case XY_SUB_NORM: 1591 case XY_SUB_NOQ: 1592 return (XY_ERR_AOK); /* success */ 1593 case XY_SUB_WAIT: 1594 while (iorq->iopb->done == 0) { 1595 (void) tsleep(iorq, PRIBIO, "xyciorq", 0); 1596 } 1597 return (iorq->errnum); 1598 case XY_SUB_POLL: 1599 return (xyc_piodriver(xycsc, iorq)); 1600 default: 1601 panic("xyc_submit_iorq wrap up"); 1602 } 1603 panic("xyc_submit_iorq"); 1604 return 0; /* not reached */ 1605 } 1606 1607 1608 /* 1609 * xyc_chain: build a chain. return dvma address of first element in 1610 * the chain. iorq != NULL: means we only want that item on the chain. 1611 */ 1612 1613 struct xy_iopb * 1614 xyc_chain(xycsc, iorq) 1615 struct xyc_softc *xycsc; 1616 struct xy_iorq *iorq; 1617 1618 { 1619 int togo, chain, hand; 1620 1621 bzero(xycsc->xy_chain, sizeof(xycsc->xy_chain)); 1622 1623 /* 1624 * promote control IOPB to the top 1625 */ 1626 if (iorq == NULL) { 1627 if ((XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_POLL || 1628 XY_STATE(xycsc->reqs[XYC_CTLIOPB].mode) == XY_SUB_WAIT) && 1629 xycsc->iopbase[XYC_CTLIOPB].done == 0) 1630 iorq = &xycsc->reqs[XYC_CTLIOPB]; 1631 } 1632 1633 /* 1634 * special case: if iorq != NULL then we have a POLL or WAIT request. 1635 * we let these take priority and do them first. 1636 */ 1637 if (iorq) { 1638 xycsc->xy_chain[0] = iorq; 1639 iorq->iopb->chen = 0; 1640 return(iorq->dmaiopb); 1641 } 1642 1643 /* 1644 * NORM case: do round robin and maybe chain (if allowed and possible) 1645 */ 1646 chain = 0; 1647 hand = xycsc->xy_hand; 1648 xycsc->xy_hand = (xycsc->xy_hand + 1) % XYC_MAXIOPB; 1649 1650 for (togo = XYC_MAXIOPB; togo > 0; 1651 togo--, hand = (hand + 1) % XYC_MAXIOPB) { 1652 struct xy_iopb *iopb, *prev_iopb, *dmaiopb; 1653 1654 if (XY_STATE(xycsc->reqs[hand].mode) != XY_SUB_NORM || 1655 xycsc->iopbase[hand].done) 1656 continue; /* not ready-for-i/o */ 1657 1658 xycsc->xy_chain[chain] = &xycsc->reqs[hand]; 1659 iopb = xycsc->xy_chain[chain]->iopb; 1660 iopb->chen = 0; 1661 if (chain != 0) { 1662 /* adding a link to a chain */ 1663 prev_iopb = xycsc->xy_chain[chain-1]->iopb; 1664 prev_iopb->chen = 1; 1665 dmaiopb = xycsc->xy_chain[chain]->dmaiopb; 1666 prev_iopb->nxtiopb = ((u_long)dmaiopb) & 0xffff; 1667 } else { 1668 /* head of chain */ 1669 iorq = xycsc->xy_chain[chain]; 1670 } 1671 chain++; 1672 1673 /* quit if chaining dis-allowed */ 1674 if (xycsc->no_ols) 1675 break; 1676 } 1677 1678 return(iorq ? iorq->dmaiopb : NULL); 1679 } 1680 1681 /* 1682 * xyc_piodriver 1683 * 1684 * programmed i/o driver. this function takes over the computer 1685 * and drains off the polled i/o request. it returns the status of the iorq 1686 * the caller is interesting in. 1687 */ 1688 int 1689 xyc_piodriver(xycsc, iorq) 1690 struct xyc_softc *xycsc; 1691 struct xy_iorq *iorq; 1692 1693 { 1694 int nreset = 0; 1695 int retval = 0; 1696 u_long res; 1697 #ifdef XYC_DEBUG 1698 printf("xyc_piodriver(%s, 0x%x)\n", device_xname(&xycsc->sc_dev), iorq); 1699 #endif 1700 1701 while (iorq->iopb->done == 0) { 1702 1703 res = xyc_unbusy(xycsc->xyc, XYC_MAXTIME); 1704 1705 /* we expect some progress soon */ 1706 if (res == XY_ERR_FAIL && nreset >= 2) { 1707 xyc_reset(xycsc, 0, XY_RSET_ALL, XY_ERR_FAIL, 0); 1708 #ifdef XYC_DEBUG 1709 printf("xyc_piodriver: timeout\n"); 1710 #endif 1711 return (XY_ERR_FAIL); 1712 } 1713 if (res == XY_ERR_FAIL) { 1714 if (xyc_reset(xycsc, 0, 1715 (nreset++ == 0) ? XY_RSET_NONE : iorq, 1716 XY_ERR_FAIL, 1717 0) == XY_ERR_FAIL) 1718 return (XY_ERR_FAIL); /* flushes all but POLL 1719 * requests, resets */ 1720 continue; 1721 } 1722 1723 xyc_remove_iorq(xycsc); /* may resubmit request */ 1724 1725 if (iorq->iopb->done == 0) 1726 xyc_start(xycsc, iorq); 1727 } 1728 1729 /* get return value */ 1730 1731 retval = iorq->errnum; 1732 1733 #ifdef XYC_DEBUG 1734 printf("xyc_piodriver: done, retval = 0x%x (%s)\n", 1735 iorq->errnum, xyc_e2str(iorq->errnum)); 1736 #endif 1737 1738 /* start up any bufs that have queued */ 1739 1740 xyc_start(xycsc, NULL); 1741 1742 return (retval); 1743 } 1744 1745 /* 1746 * xyc_xyreset: reset one drive. NOTE: assumes xyc was just reset. 1747 * we steal iopb[XYC_CTLIOPB] for this, but we put it back when we are done. 1748 */ 1749 void 1750 xyc_xyreset(xycsc, xysc) 1751 struct xyc_softc *xycsc; 1752 struct xy_softc *xysc; 1753 1754 { 1755 struct xy_iopb tmpiopb; 1756 struct xy_iopb *iopb; 1757 int del; 1758 1759 iopb = xycsc->ciopb; 1760 1761 /* Save contents */ 1762 bcopy(iopb, &tmpiopb, sizeof(struct xy_iopb)); 1763 1764 iopb->chen = iopb->done = iopb->errs = 0; 1765 iopb->ien = 0; 1766 iopb->com = XYCMD_RST; 1767 iopb->unit = xysc->xy_drive; 1768 1769 XYC_GO(xycsc->xyc, xycsc->ciorq->dmaiopb); 1770 1771 del = XYC_RESETUSEC; 1772 while (del > 0) { 1773 if ((xycsc->xyc->xyc_csr & XYC_GBSY) == 0) 1774 break; 1775 DELAY(1); 1776 del--; 1777 } 1778 1779 if (del <= 0 || iopb->errs) { 1780 printf("%s: off-line: %s\n", device_xname(&xycsc->sc_dev), 1781 xyc_e2str(iopb->errnum)); 1782 del = xycsc->xyc->xyc_rsetup; 1783 if (xyc_unbusy(xycsc->xyc, XYC_RESETUSEC) == XY_ERR_FAIL) 1784 panic("xyc_reset"); 1785 } else { 1786 xycsc->xyc->xyc_csr = XYC_IPND; /* clear IPND */ 1787 } 1788 1789 /* Restore contents */ 1790 bcopy(&tmpiopb, iopb, sizeof(struct xy_iopb)); 1791 } 1792 1793 1794 /* 1795 * xyc_reset: reset everything: requests are marked as errors except 1796 * a polled request (which is resubmitted) 1797 */ 1798 int 1799 xyc_reset(xycsc, quiet, blastmode, error, xysc) 1800 struct xyc_softc *xycsc; 1801 int quiet, error; 1802 struct xy_iorq *blastmode; 1803 struct xy_softc *xysc; 1804 1805 { 1806 int del = 0, lcv, retval = XY_ERR_AOK; 1807 1808 /* soft reset hardware */ 1809 1810 if (!quiet) 1811 printf("%s: soft reset\n", device_xname(&xycsc->sc_dev)); 1812 del = xycsc->xyc->xyc_rsetup; 1813 del = xyc_unbusy(xycsc->xyc, XYC_RESETUSEC); 1814 if (del == XY_ERR_FAIL) { 1815 blastmode = XY_RSET_ALL; /* dead, flush all requests */ 1816 retval = XY_ERR_FAIL; 1817 } 1818 if (xysc) 1819 xyc_xyreset(xycsc, xysc); 1820 1821 /* fix queues based on "blast-mode" */ 1822 1823 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 1824 register struct xy_iorq *iorq = &xycsc->reqs[lcv]; 1825 1826 if (XY_STATE(iorq->mode) != XY_SUB_POLL && 1827 XY_STATE(iorq->mode) != XY_SUB_WAIT && 1828 XY_STATE(iorq->mode) != XY_SUB_NORM) 1829 /* is it active? */ 1830 continue; 1831 1832 if (blastmode == XY_RSET_ALL || 1833 blastmode != iorq) { 1834 /* failed */ 1835 iorq->errnum = error; 1836 xycsc->iopbase[lcv].done = xycsc->iopbase[lcv].errs = 1; 1837 switch (XY_STATE(iorq->mode)) { 1838 case XY_SUB_NORM: 1839 iorq->buf->b_error = EIO; 1840 iorq->buf->b_resid = iorq->sectcnt * XYFM_BPS; 1841 1842 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 1843 iorq->dmamap->dm_mapsize, 1844 (iorq->buf->b_flags & B_READ) 1845 ? BUS_DMASYNC_POSTREAD 1846 : BUS_DMASYNC_POSTWRITE); 1847 1848 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 1849 1850 (void)bufq_get(iorq->xy->xyq); 1851 disk_unbusy(&xycsc->reqs[lcv].xy->sc_dk, 1852 (xycsc->reqs[lcv].buf->b_bcount - 1853 xycsc->reqs[lcv].buf->b_resid), 1854 (xycsc->reqs[lcv].buf->b_flags & B_READ)); 1855 biodone(iorq->buf); 1856 iorq->mode = XY_SUB_FREE; 1857 break; 1858 case XY_SUB_WAIT: 1859 wakeup(iorq); 1860 case XY_SUB_POLL: 1861 iorq->mode = 1862 XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 1863 break; 1864 } 1865 1866 } else { 1867 1868 /* resubmit, no need to do anything here */ 1869 } 1870 } 1871 1872 /* 1873 * now, if stuff is waiting, start it. 1874 * since we just reset it should go 1875 */ 1876 xyc_start(xycsc, NULL); 1877 1878 return (retval); 1879 } 1880 1881 /* 1882 * xyc_start: start waiting buffers 1883 */ 1884 1885 void 1886 xyc_start(xycsc, iorq) 1887 struct xyc_softc *xycsc; 1888 struct xy_iorq *iorq; 1889 1890 { 1891 int lcv; 1892 struct xy_softc *xy; 1893 1894 if (iorq == NULL) { 1895 for (lcv = 0; lcv < XYC_MAXDEV ; lcv++) { 1896 if ((xy = xycsc->sc_drives[lcv]) == NULL) continue; 1897 if (bufq_peek(xy->xyq) == NULL) continue; 1898 if (xy->xyrq->mode != XY_SUB_FREE) continue; 1899 xyc_startbuf(xycsc, xy, bufq_peek(xy->xyq)); 1900 } 1901 } 1902 xyc_submit_iorq(xycsc, iorq, XY_SUB_NOQ); 1903 } 1904 1905 /* 1906 * xyc_remove_iorq: remove "done" IOPB's. 1907 */ 1908 1909 int 1910 xyc_remove_iorq(xycsc) 1911 struct xyc_softc *xycsc; 1912 1913 { 1914 int errnum, rq, comm, errs; 1915 struct xyc *xyc = xycsc->xyc; 1916 u_long addr; 1917 struct xy_iopb *iopb; 1918 struct xy_iorq *iorq; 1919 struct buf *bp; 1920 1921 if (xyc->xyc_csr & XYC_DERR) { 1922 /* 1923 * DOUBLE ERROR: should never happen under normal use. This 1924 * error is so bad, you can't even tell which IOPB is bad, so 1925 * we dump them all. 1926 */ 1927 errnum = XY_ERR_DERR; 1928 aprint_error_dev(&xycsc->sc_dev, "DOUBLE ERROR!\n"); 1929 if (xyc_reset(xycsc, 0, XY_RSET_ALL, errnum, 0) != XY_ERR_AOK) { 1930 aprint_error_dev(&xycsc->sc_dev, "soft reset failed!\n"); 1931 panic("xyc_remove_iorq: controller DEAD"); 1932 } 1933 return (XY_ERR_AOK); 1934 } 1935 1936 /* 1937 * get iopb that is done, loop down the chain 1938 */ 1939 1940 if (xyc->xyc_csr & XYC_ERR) { 1941 xyc->xyc_csr = XYC_ERR; /* clear error condition */ 1942 } 1943 if (xyc->xyc_csr & XYC_IPND) { 1944 xyc->xyc_csr = XYC_IPND; /* clear interrupt */ 1945 } 1946 1947 for (rq = 0; rq < XYC_MAXIOPB; rq++) { 1948 iorq = xycsc->xy_chain[rq]; 1949 if (iorq == NULL) break; /* done ! */ 1950 if (iorq->mode == 0 || XY_STATE(iorq->mode) == XY_SUB_DONE) 1951 continue; /* free, or done */ 1952 iopb = iorq->iopb; 1953 if (iopb->done == 0) 1954 continue; /* not done yet */ 1955 1956 comm = iopb->com; 1957 errs = iopb->errs; 1958 1959 if (errs) 1960 iorq->errnum = iopb->errnum; 1961 else 1962 iorq->errnum = 0; 1963 1964 /* handle non-fatal errors */ 1965 1966 if (errs && 1967 xyc_error(xycsc, iorq, iopb, comm) == XY_ERR_AOK) 1968 continue; /* AOK: we resubmitted it */ 1969 1970 1971 /* this iorq is now done (hasn't been restarted or anything) */ 1972 1973 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 1974 xyc_perror(iorq, iopb, 0); 1975 1976 /* now, if read/write check to make sure we got all the data 1977 * we needed. (this may not be the case if we got an error in 1978 * the middle of a multisector request). */ 1979 1980 if ((iorq->mode & XY_MODE_B144) != 0 && errs == 0 && 1981 (comm == XYCMD_RD || comm == XYCMD_WR)) { 1982 /* we just successfully processed a bad144 sector 1983 * note: if we are in bad 144 mode, the pointers have 1984 * been advanced already (see above) and are pointing 1985 * at the bad144 sector. to exit bad144 mode, we 1986 * must advance the pointers 1 sector and issue a new 1987 * request if there are still sectors left to process 1988 * 1989 */ 1990 XYC_ADVANCE(iorq, 1); /* advance 1 sector */ 1991 1992 /* exit b144 mode */ 1993 iorq->mode = iorq->mode & (~XY_MODE_B144); 1994 1995 if (iorq->sectcnt) { /* more to go! */ 1996 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 1997 iopb->errs = iopb->done = 0; 1998 iorq->tries = 0; 1999 iopb->scnt = iorq->sectcnt; 2000 iopb->cyl = iorq->blockno / 2001 iorq->xy->sectpercyl; 2002 iopb->head = 2003 (iorq->blockno / iorq->xy->nhead) % 2004 iorq->xy->nhead; 2005 iopb->sect = iorq->blockno % XYFM_BPS; 2006 addr = (u_long) iorq->dbuf; 2007 iopb->dataa = (addr & 0xffff); 2008 iopb->datar = ((addr & 0xff0000) >> 16); 2009 /* will resubit at end */ 2010 continue; 2011 } 2012 } 2013 /* final cleanup, totally done with this request */ 2014 2015 switch (XY_STATE(iorq->mode)) { 2016 case XY_SUB_NORM: 2017 bp = iorq->buf; 2018 if (errs) { 2019 bp->b_error = EIO; 2020 bp->b_resid = iorq->sectcnt * XYFM_BPS; 2021 } else { 2022 bp->b_resid = 0; /* done */ 2023 } 2024 bus_dmamap_sync(xycsc->dmatag, iorq->dmamap, 0, 2025 iorq->dmamap->dm_mapsize, 2026 (iorq->buf->b_flags & B_READ) 2027 ? BUS_DMASYNC_POSTREAD 2028 : BUS_DMASYNC_POSTWRITE); 2029 2030 bus_dmamap_unload(xycsc->dmatag, iorq->dmamap); 2031 2032 (void)bufq_get(iorq->xy->xyq); 2033 disk_unbusy(&iorq->xy->sc_dk, 2034 (bp->b_bcount - bp->b_resid), 2035 (bp->b_flags & B_READ)); 2036 iorq->mode = XY_SUB_FREE; 2037 biodone(bp); 2038 break; 2039 case XY_SUB_WAIT: 2040 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2041 wakeup(iorq); 2042 break; 2043 case XY_SUB_POLL: 2044 iorq->mode = XY_NEWSTATE(iorq->mode, XY_SUB_DONE); 2045 break; 2046 } 2047 } 2048 2049 return (XY_ERR_AOK); 2050 } 2051 2052 /* 2053 * xyc_perror: print error. 2054 * - if still_trying is true: we got an error, retried and got a 2055 * different error. in that case lasterror is the old error, 2056 * and errnum is the new one. 2057 * - if still_trying is not true, then if we ever had an error it 2058 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2059 * from that error (otherwise iorq->errnum == iorq->lasterror). 2060 */ 2061 void 2062 xyc_perror(iorq, iopb, still_trying) 2063 struct xy_iorq *iorq; 2064 struct xy_iopb *iopb; 2065 int still_trying; 2066 2067 { 2068 2069 int error = iorq->lasterror; 2070 2071 printf("%s", (iorq->xy) ? device_xname(&iorq->xy->sc_dev) 2072 : device_xname(&iorq->xyc->sc_dev)); 2073 if (iorq->buf) 2074 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2075 if (iopb->com == XYCMD_RD || iopb->com == XYCMD_WR) 2076 printf("%s %d/%d/%d: ", 2077 (iopb->com == XYCMD_RD) ? "read" : "write", 2078 iopb->cyl, iopb->head, iopb->sect); 2079 printf("%s", xyc_e2str(error)); 2080 2081 if (still_trying) 2082 printf(" [still trying, new error=%s]", xyc_e2str(iorq->errnum)); 2083 else 2084 if (iorq->errnum == 0) 2085 printf(" [recovered in %d tries]", iorq->tries); 2086 2087 printf("\n"); 2088 } 2089 2090 /* 2091 * xyc_error: non-fatal error encountered... recover. 2092 * return AOK if resubmitted, return FAIL if this iopb is done 2093 */ 2094 int 2095 xyc_error(xycsc, iorq, iopb, comm) 2096 struct xyc_softc *xycsc; 2097 struct xy_iorq *iorq; 2098 struct xy_iopb *iopb; 2099 int comm; 2100 2101 { 2102 int errnum = iorq->errnum; 2103 int erract = xyc_entoact(errnum); 2104 int oldmode, advance; 2105 #ifdef __sparc__ 2106 int i; 2107 #endif 2108 2109 if (erract == XY_ERA_RSET) { /* some errors require a reset */ 2110 oldmode = iorq->mode; 2111 iorq->mode = XY_SUB_DONE | (~XY_SUB_MASK & oldmode); 2112 /* make xyc_start ignore us */ 2113 xyc_reset(xycsc, 1, XY_RSET_NONE, errnum, iorq->xy); 2114 iorq->mode = oldmode; 2115 } 2116 /* check for read/write to a sector in bad144 table if bad: redirect 2117 * request to bad144 area */ 2118 2119 if ((comm == XYCMD_RD || comm == XYCMD_WR) && 2120 (iorq->mode & XY_MODE_B144) == 0) { 2121 advance = iorq->sectcnt - iopb->scnt; 2122 XYC_ADVANCE(iorq, advance); 2123 #ifdef __sparc__ 2124 if ((i = isbad(&iorq->xy->dkb, iorq->blockno / iorq->xy->sectpercyl, 2125 (iorq->blockno / iorq->xy->nsect) % iorq->xy->nhead, 2126 iorq->blockno % iorq->xy->nsect)) != -1) { 2127 iorq->mode |= XY_MODE_B144; /* enter bad144 mode & 2128 * redirect */ 2129 iopb->errnum = iopb->done = iopb->errs = 0; 2130 iopb->scnt = 1; 2131 iopb->cyl = (iorq->xy->ncyl + iorq->xy->acyl) - 2; 2132 /* second to last acyl */ 2133 i = iorq->xy->sectpercyl - 1 - i; /* follow bad144 2134 * standard */ 2135 iopb->head = i / iorq->xy->nhead; 2136 iopb->sect = i % iorq->xy->nhead; 2137 /* will resubmit when we come out of remove_iorq */ 2138 return (XY_ERR_AOK); /* recovered! */ 2139 } 2140 #endif 2141 } 2142 2143 /* 2144 * it isn't a bad144 sector, must be real error! see if we can retry 2145 * it? 2146 */ 2147 if ((iorq->mode & XY_MODE_VERBO) && iorq->lasterror) 2148 xyc_perror(iorq, iopb, 1); /* inform of error state 2149 * change */ 2150 iorq->lasterror = errnum; 2151 2152 if ((erract == XY_ERA_RSET || erract == XY_ERA_HARD) 2153 && iorq->tries < XYC_MAXTRIES) { /* retry? */ 2154 iorq->tries++; 2155 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2156 /* will resubmit at end of remove_iorq */ 2157 return (XY_ERR_AOK); /* recovered! */ 2158 } 2159 2160 /* failed to recover from this error */ 2161 return (XY_ERR_FAIL); 2162 } 2163 2164 /* 2165 * xyc_tick: make sure xy is still alive and ticking (err, kicking). 2166 */ 2167 void 2168 xyc_tick(arg) 2169 void *arg; 2170 2171 { 2172 struct xyc_softc *xycsc = arg; 2173 int lcv, s, reset = 0; 2174 2175 /* reduce ttl for each request if one goes to zero, reset xyc */ 2176 s = splbio(); 2177 for (lcv = 0; lcv < XYC_MAXIOPB; lcv++) { 2178 if (xycsc->reqs[lcv].mode == 0 || 2179 XY_STATE(xycsc->reqs[lcv].mode) == XY_SUB_DONE) 2180 continue; 2181 xycsc->reqs[lcv].ttl--; 2182 if (xycsc->reqs[lcv].ttl == 0) 2183 reset = 1; 2184 } 2185 if (reset) { 2186 printf("%s: watchdog timeout\n", device_xname(&xycsc->sc_dev)); 2187 xyc_reset(xycsc, 0, XY_RSET_NONE, XY_ERR_FAIL, NULL); 2188 } 2189 splx(s); 2190 2191 /* until next time */ 2192 2193 callout_reset(&xycsc->sc_tick_ch, XYC_TICKCNT, xyc_tick, xycsc); 2194 } 2195 2196 /* 2197 * xyc_ioctlcmd: this function provides a user level interface to the 2198 * controller via ioctl. this allows "format" programs to be written 2199 * in user code, and is also useful for some debugging. we return 2200 * an error code. called at user priority. 2201 * 2202 * XXX missing a few commands (see the 7053 driver for ideas) 2203 */ 2204 int 2205 xyc_ioctlcmd(xy, dev, xio) 2206 struct xy_softc *xy; 2207 dev_t dev; 2208 struct xd_iocmd *xio; 2209 2210 { 2211 int s, rqno, dummy = 0; 2212 char *dvmabuf = NULL, *buf = NULL; 2213 struct xyc_softc *xycsc; 2214 int rseg, error; 2215 bus_dma_segment_t seg; 2216 2217 /* check sanity of requested command */ 2218 2219 switch (xio->cmd) { 2220 2221 case XYCMD_NOP: /* no op: everything should be zero */ 2222 if (xio->subfn || xio->dptr || xio->dlen || 2223 xio->block || xio->sectcnt) 2224 return (EINVAL); 2225 break; 2226 2227 case XYCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2228 case XYCMD_WR: 2229 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2230 xio->sectcnt * XYFM_BPS != xio->dlen || xio->dptr == NULL) 2231 return (EINVAL); 2232 break; 2233 2234 case XYCMD_SK: /* seek: doesn't seem useful to export this */ 2235 return (EINVAL); 2236 2237 break; 2238 2239 default: 2240 return (EINVAL);/* ??? */ 2241 } 2242 2243 xycsc = xy->parent; 2244 2245 /* create DVMA buffer for request if needed */ 2246 if (xio->dlen) { 2247 bus_addr_t busbuf; 2248 2249 if ((error = xy_dmamem_alloc(xycsc->dmatag, xycsc->auxmap, 2250 &seg, &rseg, 2251 xio->dlen, (void **)&buf, 2252 &busbuf)) != 0) { 2253 return (error); 2254 } 2255 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2256 2257 if (xio->cmd == XYCMD_WR) { 2258 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2259 bus_dmamem_unmap(xycsc->dmatag, buf, xio->dlen); 2260 bus_dmamem_free(xycsc->dmatag, &seg, rseg); 2261 return (error); 2262 } 2263 } 2264 } 2265 /* do it! */ 2266 2267 error = 0; 2268 s = splbio(); 2269 rqno = xyc_cmd(xycsc, xio->cmd, xio->subfn, xy->xy_drive, xio->block, 2270 xio->sectcnt, dvmabuf, XY_SUB_WAIT); 2271 if (rqno == XY_ERR_FAIL) { 2272 error = EIO; 2273 goto done; 2274 } 2275 xio->errnum = xycsc->ciorq->errnum; 2276 xio->tries = xycsc->ciorq->tries; 2277 XYC_DONE(xycsc, dummy); 2278 2279 if (xio->cmd == XYCMD_RD) 2280 error = copyout(buf, xio->dptr, xio->dlen); 2281 2282 done: 2283 splx(s); 2284 if (dvmabuf) { 2285 xy_dmamem_free(xycsc->dmatag, xycsc->auxmap, &seg, rseg, 2286 xio->dlen, buf); 2287 } 2288 return (error); 2289 } 2290 2291 /* 2292 * xyc_e2str: convert error code number into an error string 2293 */ 2294 const char * 2295 xyc_e2str(int no) 2296 { 2297 switch (no) { 2298 case XY_ERR_FAIL: 2299 return ("Software fatal error"); 2300 case XY_ERR_DERR: 2301 return ("DOUBLE ERROR"); 2302 case XY_ERR_AOK: 2303 return ("Successful completion"); 2304 case XY_ERR_IPEN: 2305 return("Interrupt pending"); 2306 case XY_ERR_BCFL: 2307 return("Busy conflict"); 2308 case XY_ERR_TIMO: 2309 return("Operation timeout"); 2310 case XY_ERR_NHDR: 2311 return("Header not found"); 2312 case XY_ERR_HARD: 2313 return("Hard ECC error"); 2314 case XY_ERR_ICYL: 2315 return("Illegal cylinder address"); 2316 case XY_ERR_ISEC: 2317 return("Illegal sector address"); 2318 case XY_ERR_SMAL: 2319 return("Last sector too small"); 2320 case XY_ERR_SACK: 2321 return("Slave ACK error (non-existent memory)"); 2322 case XY_ERR_CHER: 2323 return("Cylinder and head/header error"); 2324 case XY_ERR_SRTR: 2325 return("Auto-seek retry successful"); 2326 case XY_ERR_WPRO: 2327 return("Write-protect error"); 2328 case XY_ERR_UIMP: 2329 return("Unimplemented command"); 2330 case XY_ERR_DNRY: 2331 return("Drive not ready"); 2332 case XY_ERR_SZER: 2333 return("Sector count zero"); 2334 case XY_ERR_DFLT: 2335 return("Drive faulted"); 2336 case XY_ERR_ISSZ: 2337 return("Illegal sector size"); 2338 case XY_ERR_SLTA: 2339 return("Self test A"); 2340 case XY_ERR_SLTB: 2341 return("Self test B"); 2342 case XY_ERR_SLTC: 2343 return("Self test C"); 2344 case XY_ERR_SOFT: 2345 return("Soft ECC error"); 2346 case XY_ERR_SFOK: 2347 return("Soft ECC error recovered"); 2348 case XY_ERR_IHED: 2349 return("Illegal head"); 2350 case XY_ERR_DSEQ: 2351 return("Disk sequencer error"); 2352 case XY_ERR_SEEK: 2353 return("Seek error"); 2354 default: 2355 return ("Unknown error"); 2356 } 2357 } 2358 2359 int 2360 xyc_entoact(errnum) 2361 2362 int errnum; 2363 2364 { 2365 switch (errnum) { 2366 case XY_ERR_FAIL: case XY_ERR_DERR: case XY_ERR_IPEN: 2367 case XY_ERR_BCFL: case XY_ERR_ICYL: case XY_ERR_ISEC: 2368 case XY_ERR_UIMP: case XY_ERR_SZER: case XY_ERR_ISSZ: 2369 case XY_ERR_SLTA: case XY_ERR_SLTB: case XY_ERR_SLTC: 2370 case XY_ERR_IHED: case XY_ERR_SACK: case XY_ERR_SMAL: 2371 2372 return(XY_ERA_PROG); /* program error ! */ 2373 2374 case XY_ERR_TIMO: case XY_ERR_NHDR: case XY_ERR_HARD: 2375 case XY_ERR_DNRY: case XY_ERR_CHER: case XY_ERR_SEEK: 2376 case XY_ERR_SOFT: 2377 2378 return(XY_ERA_HARD); /* hard error, retry */ 2379 2380 case XY_ERR_DFLT: case XY_ERR_DSEQ: 2381 2382 return(XY_ERA_RSET); /* hard error reset */ 2383 2384 case XY_ERR_SRTR: case XY_ERR_SFOK: case XY_ERR_AOK: 2385 2386 return(XY_ERA_SOFT); /* an FYI error */ 2387 2388 case XY_ERR_WPRO: 2389 2390 return(XY_ERA_WPRO); /* write protect */ 2391 } 2392 2393 return(XY_ERA_PROG); /* ??? */ 2394 } 2395
Indexes created Tue Sep 30 11:09:46 GMT 2025