1 /* $NetBSD: xd.c,v 1.35 2001/01/15 21:27:21 fvdl 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 d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck@ccrc.wustl.edu> 39 * started: 27-Feb-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 * 45 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 46 * the time to answer some of my questions about the 753/7053. 47 * 48 * note: the 753 and the 7053 are programmed the same way, but are 49 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 50 * VME card (found in many VME based suns). 51 */ 52 53 #undef XDC_DEBUG /* full debug */ 54 #define XDC_DIAG /* extra sanity checks */ 55 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 56 #define XDC_DIAG /* link in with master DIAG option */ 57 #endif 58 59 #include <sys/param.h> 60 #include <sys/proc.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/file.h> 64 #include <sys/stat.h> 65 #include <sys/ioctl.h> 66 #include <sys/buf.h> 67 #include <sys/uio.h> 68 #include <sys/malloc.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/syslog.h> 73 #include <sys/dkbad.h> 74 #include <sys/conf.h> 75 76 #include <machine/bus.h> 77 #include <machine/intr.h> 78 79 #if defined(__sparc__) || defined(sun3) 80 #include <dev/sun/disklabel.h> 81 #endif 82 83 #include <dev/vme/vmereg.h> 84 #include <dev/vme/vmevar.h> 85 86 #include <dev/vme/xdreg.h> 87 #include <dev/vme/xdvar.h> 88 #include <dev/vme/xio.h> 89 90 #include "locators.h" 91 92 /* 93 * macros 94 */ 95 96 /* 97 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 98 */ 99 #define XDC_TWAIT(SC, N) { \ 100 (SC)->waitq[(SC)->waitend] = (N); \ 101 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 102 (SC)->nwait++; \ 103 } 104 105 /* 106 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 107 */ 108 #define XDC_HWAIT(SC, N) { \ 109 (SC)->waithead = ((SC)->waithead == 0) ? \ 110 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 111 (SC)->waitq[(SC)->waithead] = (N); \ 112 (SC)->nwait++; \ 113 } 114 115 /* 116 * XDC_GET_WAITER: gets the first request waiting on the waitq 117 * and removes it (so it can be submitted) 118 */ 119 #define XDC_GET_WAITER(XDCSC, RQ) { \ 120 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 121 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 122 xdcsc->nwait--; \ 123 } 124 125 /* 126 * XDC_FREE: add iorq "N" to SC's free list 127 */ 128 #define XDC_FREE(SC, N) { \ 129 (SC)->freereq[(SC)->nfree++] = (N); \ 130 (SC)->reqs[N].mode = 0; \ 131 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 132 } 133 134 135 /* 136 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 137 */ 138 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 139 140 /* 141 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 142 */ 143 #define XDC_GO(XDC, ADDR) { \ 144 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 145 (ADDR) = ((ADDR) >> 8); \ 146 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 147 (ADDR) = ((ADDR) >> 8); \ 148 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 149 (ADDR) = ((ADDR) >> 8); \ 150 (XDC)->xdc_iopbaddr3 = (ADDR); \ 151 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 152 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 153 } 154 155 /* 156 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 157 * LCV is a counter. If it goes to zero then we timed out. 158 */ 159 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 160 (LCV) = (TIME); \ 161 while ((LCV) > 0) { \ 162 if ((XDC)->xdc_csr & (BITS)) break; \ 163 (LCV) = (LCV) - 1; \ 164 DELAY(1); \ 165 } \ 166 } 167 168 /* 169 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 170 */ 171 #define XDC_DONE(SC,RQ,ER) { \ 172 if ((RQ) == XD_ERR_FAIL) { \ 173 (ER) = (RQ); \ 174 } else { \ 175 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 176 wakeup(&(SC)->ndone); \ 177 (ER) = (SC)->reqs[RQ].errno; \ 178 XDC_FREE((SC), (RQ)); \ 179 } \ 180 } 181 182 /* 183 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 184 */ 185 #define XDC_ADVANCE(IORQ, N) { \ 186 if (N) { \ 187 (IORQ)->sectcnt -= (N); \ 188 (IORQ)->blockno += (N); \ 189 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 190 } \ 191 } 192 193 /* 194 * note - addresses you can sleep on: 195 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 196 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 197 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 198 * to drop below XDC_SUBWAITLIM) 199 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 200 */ 201 202 203 /* 204 * function prototypes 205 * "xdc_*" functions are internal, all others are external interfaces 206 */ 207 208 extern int pil_to_vme[]; /* from obio.c */ 209 210 /* internals */ 211 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 212 char *xdc_e2str __P((int)); 213 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 214 struct xd_iopb *, int, int)); 215 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 216 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 217 int xdc_piodriver __P((struct xdc_softc *, int, int)); 218 int xdc_remove_iorq __P((struct xdc_softc *)); 219 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 220 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 221 struct xd_softc *, int, u_long, int, 222 caddr_t, struct buf *)); 223 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 224 void xdc_start __P((struct xdc_softc *, int)); 225 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 226 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 227 void xdc_tick __P((void *)); 228 void xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 229 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 230 int *, bus_size_t, caddr_t *, bus_addr_t *); 231 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 232 int, bus_size_t, caddr_t); 233 234 235 /* machine interrupt hook */ 236 int xdcintr __P((void *)); 237 238 /* autoconf */ 239 int xdcmatch __P((struct device *, struct cfdata *, void *)); 240 void xdcattach __P((struct device *, struct device *, void *)); 241 int xdmatch __P((struct device *, struct cfdata *, void *)); 242 void xdattach __P((struct device *, struct device *, void *)); 243 static int xdc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 244 245 static void xddummystrat __P((struct buf *)); 246 int xdgetdisklabel __P((struct xd_softc *, void *)); 247 248 bdev_decl(xd); 249 cdev_decl(xd); 250 251 /* XXX - think about this more.. xd_machdep? */ 252 void xdc_md_setup __P((void)); 253 int XDC_DELAY; 254 255 #if defined(__sparc__) 256 #include <sparc/sparc/vaddrs.h> 257 #include <sparc/sparc/cpuvar.h> 258 void xdc_md_setup() 259 { 260 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 261 XDC_DELAY = XDC_DELAY_4_300; 262 else 263 XDC_DELAY = XDC_DELAY_SPARC; 264 } 265 #elif defined(sun3) 266 void xdc_md_setup() 267 { 268 XDC_DELAY = XDC_DELAY_SUN3; 269 } 270 #else 271 void xdc_md_setup() 272 { 273 XDC_DELAY = 0; 274 } 275 #endif 276 277 /* 278 * cfattach's: device driver interface to autoconfig 279 */ 280 281 struct cfattach xdc_ca = { 282 sizeof(struct xdc_softc), xdcmatch, xdcattach 283 }; 284 285 286 struct cfattach xd_ca = { 287 sizeof(struct xd_softc), xdmatch, xdattach 288 }; 289 290 extern struct cfdriver xd_cd; 291 292 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 293 int driveno; /* unit number */ 294 int fullmode; /* submit mode */ 295 int booting; /* are we booting or not? */ 296 }; 297 298 /* 299 * dkdriver 300 */ 301 302 struct dkdriver xddkdriver = {xdstrategy}; 303 304 /* 305 * start: disk label fix code (XXX) 306 */ 307 308 static void *xd_labeldata; 309 310 static void 311 xddummystrat(bp) 312 struct buf *bp; 313 { 314 if (bp->b_bcount != XDFM_BPS) 315 panic("xddummystrat"); 316 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 317 bp->b_flags |= B_DONE; 318 bp->b_flags &= ~B_BUSY; 319 } 320 321 int 322 xdgetdisklabel(xd, b) 323 struct xd_softc *xd; 324 void *b; 325 { 326 char *err; 327 #if defined(__sparc__) || defined(sun3) 328 struct sun_disklabel *sdl; 329 #endif 330 331 /* We already have the label data in `b'; setup for dummy strategy */ 332 xd_labeldata = b; 333 334 /* Required parameter for readdisklabel() */ 335 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 336 337 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 338 xddummystrat, 339 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 340 if (err) { 341 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 342 return(XD_ERR_FAIL); 343 } 344 345 #if defined(__sparc__) || defined(sun3) 346 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 347 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 348 if (sdl->sl_magic == SUN_DKMAGIC) { 349 xd->pcyl = sdl->sl_pcylinders; 350 } else 351 #endif 352 { 353 printf("%s: WARNING: no `pcyl' in disk label.\n", 354 xd->sc_dev.dv_xname); 355 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 356 xd->sc_dk.dk_label->d_acylinders; 357 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 358 xd->sc_dev.dv_xname, xd->pcyl); 359 } 360 361 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 362 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 363 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 364 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 365 xd->sectpercyl = xd->nhead * xd->nsect; 366 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 367 * sun->bsd */ 368 return(XD_ERR_AOK); 369 } 370 371 /* 372 * end: disk label fix code (XXX) 373 */ 374 375 /* 376 * Shorthand for allocating, mapping and loading a DMA buffer 377 */ 378 int 379 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 380 bus_dma_tag_t tag; 381 bus_dmamap_t map; 382 bus_dma_segment_t *seg; 383 int *nsegp; 384 bus_size_t len; 385 caddr_t *kvap; 386 bus_addr_t *dmap; 387 { 388 int nseg; 389 int error; 390 391 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 392 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 393 return (error); 394 } 395 396 if ((error = bus_dmamap_load_raw(tag, map, 397 seg, nseg, len, BUS_DMA_NOWAIT)) != 0) { 398 bus_dmamem_free(tag, seg, nseg); 399 return (error); 400 } 401 402 if ((error = bus_dmamem_map(tag, seg, nseg, 403 len, kvap, 404 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 405 bus_dmamap_unload(tag, map); 406 bus_dmamem_free(tag, seg, nseg); 407 return (error); 408 } 409 410 *dmap = map->dm_segs[0].ds_addr; 411 *nsegp = nseg; 412 return (0); 413 } 414 415 void 416 xd_dmamem_free(tag, map, seg, nseg, len, kva) 417 bus_dma_tag_t tag; 418 bus_dmamap_t map; 419 bus_dma_segment_t *seg; 420 int nseg; 421 bus_size_t len; 422 caddr_t kva; 423 { 424 425 bus_dmamap_unload(tag, map); 426 bus_dmamem_unmap(tag, kva, len); 427 bus_dmamem_free(tag, seg, nseg); 428 } 429 430 431 /* 432 * a u t o c o n f i g f u n c t i o n s 433 */ 434 435 /* 436 * xdcmatch: determine if xdc is present or not. we do a 437 * soft reset to detect the xdc. 438 */ 439 440 int 441 xdc_probe(arg, tag, handle) 442 void *arg; 443 bus_space_tag_t tag; 444 bus_space_handle_t handle; 445 { 446 struct xdc *xdc = (void *)handle; /* XXX */ 447 int del = 0; 448 449 xdc->xdc_csr = XDC_RESET; 450 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 451 return (del > 0 ? 0 : EIO); 452 } 453 454 int xdcmatch(parent, cf, aux) 455 struct device *parent; 456 struct cfdata *cf; 457 void *aux; 458 { 459 struct vme_attach_args *va = aux; 460 vme_chipset_tag_t ct = va->va_vct; 461 vme_am_t mod; 462 int error; 463 464 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 465 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 466 return (0); 467 468 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 469 mod, VME_D32, xdc_probe, 0); 470 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 471 472 return (error == 0); 473 } 474 475 /* 476 * xdcattach: attach controller 477 */ 478 void 479 xdcattach(parent, self, aux) 480 struct device *parent, *self; 481 void *aux; 482 483 { 484 struct vme_attach_args *va = aux; 485 vme_chipset_tag_t ct = va->va_vct; 486 bus_space_tag_t bt; 487 bus_space_handle_t bh; 488 vme_intr_handle_t ih; 489 vme_am_t mod; 490 struct xdc_softc *xdc = (void *) self; 491 struct xdc_attach_args xa; 492 int lcv, rqno, error; 493 struct xd_iopb_ctrl *ctl; 494 bus_dma_segment_t seg; 495 int rseg; 496 vme_mapresc_t resc; 497 498 xdc_md_setup(); 499 500 /* get addressing and intr level stuff from autoconfig and load it 501 * into our xdc_softc. */ 502 503 xdc->dmatag = va->va_bdt; 504 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 505 506 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 507 panic("xdc: vme alloc"); 508 509 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 510 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 511 panic("xdc: vme_map"); 512 513 xdc->xdc = (struct xdc *) bh; /* XXX */ 514 xdc->ipl = va->ilevel; 515 xdc->vector = va->ivector; 516 517 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 518 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 519 520 /* 521 * allocate and zero buffers 522 * 523 * note: we simplify the code by allocating the max number of iopbs and 524 * iorq's up front. thus, we avoid linked lists and the costs 525 * associated with them in exchange for wasting a little memory. 526 */ 527 528 /* Get DMA handle for misc. transfers */ 529 if ((error = vme_dmamap_create( 530 ct, /* VME chip tag */ 531 MAXPHYS, /* size */ 532 VME_AM_A24, /* address modifier */ 533 VME_D32, /* data size */ 534 0, /* swap */ 535 1, /* nsegments */ 536 MAXPHYS, /* maxsegsz */ 537 0, /* boundary */ 538 BUS_DMA_NOWAIT, 539 &xdc->auxmap)) != 0) { 540 541 printf("%s: DMA buffer map create error %d\n", 542 xdc->sc_dev.dv_xname, error); 543 return; 544 } 545 546 547 /* Get DMA handle for mapping iorq descriptors */ 548 if ((error = vme_dmamap_create( 549 ct, /* VME chip tag */ 550 XDC_MAXIOPB * sizeof(struct xd_iopb), 551 VME_AM_A24, /* address modifier */ 552 VME_D32, /* data size */ 553 0, /* swap */ 554 1, /* nsegments */ 555 XDC_MAXIOPB * sizeof(struct xd_iopb), 556 0, /* boundary */ 557 BUS_DMA_NOWAIT, 558 &xdc->iopmap)) != 0) { 559 560 printf("%s: DMA buffer map create error %d\n", 561 xdc->sc_dev.dv_xname, error); 562 return; 563 } 564 565 /* Get DMA buffer for iorq descriptors */ 566 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 567 XDC_MAXIOPB * sizeof(struct xd_iopb), 568 (caddr_t *)&xdc->iopbase, 569 (bus_addr_t *)&xdc->dvmaiopb)) != 0) { 570 printf("%s: DMA buffer alloc error %d\n", 571 xdc->sc_dev.dv_xname, error); 572 return; 573 } 574 575 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 576 577 xdc->reqs = (struct xd_iorq *) 578 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 579 if (xdc->reqs == NULL) 580 panic("xdc malloc"); 581 bzero(xdc->reqs, XDC_MAXIOPB * sizeof(struct xd_iorq)); 582 583 /* init free list, iorq to iopb pointers, and non-zero fields in the 584 * iopb which never change. */ 585 586 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 587 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 588 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 589 xdc->freereq[lcv] = lcv; 590 xdc->iopbase[lcv].fixd = 1; /* always the same */ 591 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 592 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 593 594 if ((error = vme_dmamap_create( 595 ct, /* VME chip tag */ 596 MAXPHYS, /* size */ 597 VME_AM_A24, /* address modifier */ 598 VME_D32, /* data size */ 599 0, /* swap */ 600 1, /* nsegments */ 601 MAXPHYS, /* maxsegsz */ 602 0, /* boundary */ 603 BUS_DMA_NOWAIT, 604 &xdc->reqs[lcv].dmamap)) != 0) { 605 606 printf("%s: DMA buffer map create error %d\n", 607 xdc->sc_dev.dv_xname, error); 608 return; 609 } 610 } 611 xdc->nfree = XDC_MAXIOPB; 612 xdc->nrun = 0; 613 xdc->waithead = xdc->waitend = xdc->nwait = 0; 614 xdc->ndone = 0; 615 616 /* init queue of waiting bufs */ 617 618 BUFQ_INIT(&xdc->sc_wq); 619 callout_init(&xdc->sc_tick_ch); 620 621 /* 622 * section 7 of the manual tells us how to init the controller: 623 * - read controller parameters (6/0) 624 * - write controller parameters (5/0) 625 */ 626 627 /* read controller parameters and insure we have a 753/7053 */ 628 629 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 630 if (rqno == XD_ERR_FAIL) { 631 printf(": couldn't read controller params\n"); 632 return; /* shouldn't ever happen */ 633 } 634 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 635 if (ctl->ctype != XDCT_753) { 636 if (xdc->reqs[rqno].errno) 637 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 638 printf(": doesn't identify as a 753/7053\n"); 639 XDC_DONE(xdc, rqno, error); 640 return; 641 } 642 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 643 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 644 XDC_DONE(xdc, rqno, error); 645 646 /* now write controller parameters (xdc_cmd sets all params for us) */ 647 648 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 649 XDC_DONE(xdc, rqno, error); 650 if (error) { 651 printf("%s: controller config error: %s\n", 652 xdc->sc_dev.dv_xname, xdc_e2str(error)); 653 return; 654 } 655 656 /* link in interrupt with higher level software */ 657 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 658 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 659 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 660 xdc->sc_dev.dv_xname, "intr"); 661 662 663 /* now we must look for disks using autoconfig */ 664 xa.fullmode = XD_SUB_POLL; 665 xa.booting = 1; 666 667 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 668 (void) config_found(self, (void *) &xa, NULL); 669 670 /* start the watchdog clock */ 671 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 672 673 } 674 675 /* 676 * xdmatch: probe for disk. 677 * 678 * note: we almost always say disk is present. this allows us to 679 * spin up and configure a disk after the system is booted (we can 680 * call xdattach!). 681 */ 682 int 683 xdmatch(parent, cf, aux) 684 struct device *parent; 685 struct cfdata *cf; 686 void *aux; 687 { 688 struct xdc_attach_args *xa = aux; 689 690 /* looking for autoconf wildcard or exact match */ 691 692 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 693 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 694 return 0; 695 696 return 1; 697 698 } 699 700 /* 701 * xdattach: attach a disk. this can be called from autoconf and also 702 * from xdopen/xdstrategy. 703 */ 704 void 705 xdattach(parent, self, aux) 706 struct device *parent, *self; 707 void *aux; 708 709 { 710 struct xd_softc *xd = (void *) self; 711 struct xdc_softc *xdc = (void *) parent; 712 struct xdc_attach_args *xa = aux; 713 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 714 struct xd_iopb_drive *driopb; 715 struct dkbad *dkb; 716 int rseg, error; 717 bus_dma_segment_t seg; 718 caddr_t dmaddr; 719 caddr_t buf; 720 721 /* 722 * Always re-initialize the disk structure. We want statistics 723 * to start with a clean slate. 724 */ 725 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 726 xd->sc_dk.dk_driver = &xddkdriver; 727 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 728 729 /* if booting, init the xd_softc */ 730 731 if (xa->booting) { 732 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 733 xd->flags = 0; 734 xd->parent = xdc; 735 } 736 xd->xd_drive = xa->driveno; 737 fmode = xa->fullmode; 738 xdc->sc_drives[xa->driveno] = xd; 739 740 /* if not booting, make sure we are the only process in the attach for 741 * this drive. if locked out, sleep on it. */ 742 743 if (!xa->booting) { 744 s = splbio(); 745 while (xd->state == XD_DRIVE_ATTACHING) { 746 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 747 splx(s); 748 return; 749 } 750 } 751 printf("%s at %s", 752 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 753 } 754 755 /* we now have control */ 756 xd->state = XD_DRIVE_ATTACHING; 757 newstate = XD_DRIVE_UNKNOWN; 758 759 buf = NULL; 760 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 761 XDFM_BPS, 762 (caddr_t *)&buf, 763 (bus_addr_t *)&dmaddr)) != 0) { 764 printf("%s: DMA buffer alloc error %d\n", 765 xdc->sc_dev.dv_xname, error); 766 return; 767 } 768 769 /* first try and reset the drive */ 770 771 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 772 XDC_DONE(xdc, rqno, error); 773 if (error == XD_ERR_NRDY) { 774 printf(" drive %d: off-line\n", xa->driveno); 775 goto done; 776 } 777 if (error) { 778 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 779 goto done; 780 } 781 printf(" drive %d: ready\n", xa->driveno); 782 783 /* now set format parameters */ 784 785 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 786 XDC_DONE(xdc, rqno, error); 787 if (error) { 788 printf("%s: write format parameters failed: %s\n", 789 xd->sc_dev.dv_xname, xdc_e2str(error)); 790 goto done; 791 } 792 793 /* get drive parameters */ 794 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 795 if (rqno != XD_ERR_FAIL) { 796 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 797 spt = driopb->sectpertrk; 798 } 799 XDC_DONE(xdc, rqno, error); 800 if (error) { 801 printf("%s: read drive parameters failed: %s\n", 802 xd->sc_dev.dv_xname, xdc_e2str(error)); 803 goto done; 804 } 805 806 /* 807 * now set drive parameters (to semi-bogus values) so we can read the 808 * disk label. 809 */ 810 xd->pcyl = xd->ncyl = 1; 811 xd->acyl = 0; 812 xd->nhead = 1; 813 xd->nsect = 1; 814 xd->sectpercyl = 1; 815 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 816 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 817 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 818 XDC_DONE(xdc, rqno, error); 819 if (error) { 820 printf("%s: write drive parameters failed: %s\n", 821 xd->sc_dev.dv_xname, xdc_e2str(error)); 822 goto done; 823 } 824 825 /* read disk label */ 826 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 827 XDC_DONE(xdc, rqno, error); 828 if (error) { 829 printf("%s: reading disk label failed: %s\n", 830 xd->sc_dev.dv_xname, xdc_e2str(error)); 831 goto done; 832 } 833 newstate = XD_DRIVE_NOLABEL; 834 835 xd->hw_spt = spt; 836 /* Attach the disk: must be before getdisklabel to malloc label */ 837 disk_attach(&xd->sc_dk); 838 839 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 840 goto done; 841 842 /* inform the user of what is up */ 843 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 844 buf, xd->pcyl, spt); 845 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 846 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 847 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 848 XDFM_BPS); 849 850 /* now set the real drive parameters! */ 851 852 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 853 XDC_DONE(xdc, rqno, error); 854 if (error) { 855 printf("%s: write real drive parameters failed: %s\n", 856 xd->sc_dev.dv_xname, xdc_e2str(error)); 857 goto done; 858 } 859 newstate = XD_DRIVE_ONLINE; 860 861 /* 862 * read bad144 table. this table resides on the first sector of the 863 * last track of the disk (i.e. second cyl of "acyl" area). 864 */ 865 866 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 867 (xd->nhead - 1) * xd->nsect; /* last head */ 868 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 869 XDC_DONE(xdc, rqno, error); 870 if (error) { 871 printf("%s: reading bad144 failed: %s\n", 872 xd->sc_dev.dv_xname, xdc_e2str(error)); 873 goto done; 874 } 875 876 /* check dkbad for sanity */ 877 dkb = (struct dkbad *) buf; 878 for (lcv = 0; lcv < 126; lcv++) { 879 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 880 dkb->bt_bad[lcv].bt_cyl == 0) && 881 dkb->bt_bad[lcv].bt_trksec == 0xffff) 882 continue; /* blank */ 883 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 884 break; 885 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 886 break; 887 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 888 break; 889 } 890 if (lcv != 126) { 891 printf("%s: warning: invalid bad144 sector!\n", 892 xd->sc_dev.dv_xname); 893 } else { 894 bcopy(buf, &xd->dkb, XDFM_BPS); 895 } 896 897 done: 898 if (buf != NULL) { 899 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 900 &seg, rseg, XDFM_BPS, buf); 901 } 902 903 xd->state = newstate; 904 if (!xa->booting) { 905 wakeup(&xd->state); 906 splx(s); 907 } 908 } 909 910 /* 911 * end of autoconfig functions 912 */ 913 914 /* 915 * { b , c } d e v s w f u n c t i o n s 916 */ 917 918 /* 919 * xdclose: close device 920 */ 921 int 922 xdclose(dev, flag, fmt, p) 923 dev_t dev; 924 int flag, fmt; 925 struct proc *p; 926 { 927 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 928 int part = DISKPART(dev); 929 930 /* clear mask bits */ 931 932 switch (fmt) { 933 case S_IFCHR: 934 xd->sc_dk.dk_copenmask &= ~(1 << part); 935 break; 936 case S_IFBLK: 937 xd->sc_dk.dk_bopenmask &= ~(1 << part); 938 break; 939 } 940 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 941 942 return 0; 943 } 944 945 /* 946 * xddump: crash dump system 947 */ 948 int 949 xddump(dev, blkno, va, size) 950 dev_t dev; 951 daddr_t blkno; 952 caddr_t va; 953 size_t size; 954 { 955 int unit, part; 956 struct xd_softc *xd; 957 958 unit = DISKUNIT(dev); 959 if (unit >= xd_cd.cd_ndevs) 960 return ENXIO; 961 part = DISKPART(dev); 962 963 xd = xd_cd.cd_devs[unit]; 964 965 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 966 'a' + part); 967 968 return ENXIO; 969 970 /* outline: globals: "dumplo" == sector number of partition to start 971 * dump at (convert to physical sector with partition table) 972 * "dumpsize" == size of dump in clicks "physmem" == size of physical 973 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 974 * physmem) 975 * 976 * dump a copy of physical memory to the dump device starting at sector 977 * "dumplo" in the swap partition (make sure > 0). map in pages as 978 * we go. use polled I/O. 979 * 980 * XXX how to handle NON_CONTIG? */ 981 982 } 983 984 /* 985 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 986 */ 987 int 988 xdioctl(dev, command, addr, flag, p) 989 dev_t dev; 990 u_long command; 991 caddr_t addr; 992 int flag; 993 struct proc *p; 994 995 { 996 struct xd_softc *xd; 997 struct xd_iocmd *xio; 998 int error, s, unit; 999 #ifdef __HAVE_OLD_DISKLABEL 1000 struct disklabel newlabel; 1001 #endif 1002 struct disklabel *lp; 1003 1004 unit = DISKUNIT(dev); 1005 1006 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1007 return (ENXIO); 1008 1009 /* switch on ioctl type */ 1010 1011 switch (command) { 1012 case DIOCSBAD: /* set bad144 info */ 1013 if ((flag & FWRITE) == 0) 1014 return EBADF; 1015 s = splbio(); 1016 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1017 splx(s); 1018 return 0; 1019 1020 case DIOCGDINFO: /* get disk label */ 1021 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1022 return 0; 1023 #ifdef __HAVE_OLD_DISKLABEL 1024 case ODIOCGDINFO: 1025 newlabel = *(xd->sc_dk.dk_label); 1026 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1027 return ENOTTY; 1028 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1029 return 0; 1030 #endif 1031 1032 case DIOCGPART: /* get partition info */ 1033 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1034 ((struct partinfo *) addr)->part = 1035 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1036 return 0; 1037 1038 case DIOCSDINFO: /* set disk label */ 1039 #ifdef __HAVE_OLD_DISKLABEL 1040 case ODIOCSDINFO: 1041 if (command == ODIOCSDINFO) { 1042 memset(&newlabel, 0, sizeof newlabel); 1043 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1044 lp = &newlabel; 1045 } else 1046 #endif 1047 lp = (struct disklabel *)addr; 1048 1049 if ((flag & FWRITE) == 0) 1050 return EBADF; 1051 error = setdisklabel(xd->sc_dk.dk_label, 1052 lp, /* xd->sc_dk.dk_openmask : */ 0, 1053 xd->sc_dk.dk_cpulabel); 1054 if (error == 0) { 1055 if (xd->state == XD_DRIVE_NOLABEL) 1056 xd->state = XD_DRIVE_ONLINE; 1057 } 1058 return error; 1059 1060 case DIOCWLABEL: /* change write status of disk label */ 1061 if ((flag & FWRITE) == 0) 1062 return EBADF; 1063 if (*(int *) addr) 1064 xd->flags |= XD_WLABEL; 1065 else 1066 xd->flags &= ~XD_WLABEL; 1067 return 0; 1068 1069 case DIOCWDINFO: /* write disk label */ 1070 #ifdef __HAVE_OLD_DISKLABEL 1071 case ODIOCWDINFO: 1072 if (command == ODIOCWDINFO) { 1073 memset(&newlabel, 0, sizeof newlabel); 1074 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1075 lp = &newlabel; 1076 } else 1077 #endif 1078 lp = (struct disklabel *)addr; 1079 1080 if ((flag & FWRITE) == 0) 1081 return EBADF; 1082 error = setdisklabel(xd->sc_dk.dk_label, 1083 lp, /* xd->sc_dk.dk_openmask : */ 0, 1084 xd->sc_dk.dk_cpulabel); 1085 if (error == 0) { 1086 if (xd->state == XD_DRIVE_NOLABEL) 1087 xd->state = XD_DRIVE_ONLINE; 1088 1089 /* Simulate opening partition 0 so write succeeds. */ 1090 xd->sc_dk.dk_openmask |= (1 << 0); 1091 error = writedisklabel(MAKEDISKDEV(major(dev), 1092 DISKUNIT(dev), RAW_PART), 1093 xdstrategy, xd->sc_dk.dk_label, 1094 xd->sc_dk.dk_cpulabel); 1095 xd->sc_dk.dk_openmask = 1096 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1097 } 1098 return error; 1099 1100 case DIOSXDCMD: 1101 xio = (struct xd_iocmd *) addr; 1102 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1103 return (error); 1104 return (xdc_ioctlcmd(xd, dev, xio)); 1105 1106 default: 1107 return ENOTTY; 1108 } 1109 } 1110 /* 1111 * xdopen: open drive 1112 */ 1113 1114 int 1115 xdopen(dev, flag, fmt, p) 1116 dev_t dev; 1117 int flag, fmt; 1118 struct proc *p; 1119 { 1120 int unit, part; 1121 struct xd_softc *xd; 1122 struct xdc_attach_args xa; 1123 1124 /* first, could it be a valid target? */ 1125 1126 unit = DISKUNIT(dev); 1127 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1128 return (ENXIO); 1129 part = DISKPART(dev); 1130 1131 /* do we need to attach the drive? */ 1132 1133 if (xd->state == XD_DRIVE_UNKNOWN) { 1134 xa.driveno = xd->xd_drive; 1135 xa.fullmode = XD_SUB_WAIT; 1136 xa.booting = 0; 1137 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1138 if (xd->state == XD_DRIVE_UNKNOWN) { 1139 return (EIO); 1140 } 1141 } 1142 /* check for partition */ 1143 1144 if (part != RAW_PART && 1145 (part >= xd->sc_dk.dk_label->d_npartitions || 1146 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1147 return (ENXIO); 1148 } 1149 /* set open masks */ 1150 1151 switch (fmt) { 1152 case S_IFCHR: 1153 xd->sc_dk.dk_copenmask |= (1 << part); 1154 break; 1155 case S_IFBLK: 1156 xd->sc_dk.dk_bopenmask |= (1 << part); 1157 break; 1158 } 1159 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1160 1161 return 0; 1162 } 1163 1164 int 1165 xdread(dev, uio, flags) 1166 dev_t dev; 1167 struct uio *uio; 1168 int flags; 1169 { 1170 1171 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1172 } 1173 1174 int 1175 xdwrite(dev, uio, flags) 1176 dev_t dev; 1177 struct uio *uio; 1178 int flags; 1179 { 1180 1181 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1182 } 1183 1184 1185 /* 1186 * xdsize: return size of a partition for a dump 1187 */ 1188 1189 int 1190 xdsize(dev) 1191 dev_t dev; 1192 1193 { 1194 struct xd_softc *xdsc; 1195 int unit, part, size, omask; 1196 1197 /* valid unit? */ 1198 unit = DISKUNIT(dev); 1199 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1200 return (-1); 1201 1202 part = DISKPART(dev); 1203 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1204 1205 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1206 return (-1); 1207 1208 /* do it */ 1209 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1210 size = -1; /* only give valid size for swap partitions */ 1211 else 1212 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1213 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1214 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1215 return (-1); 1216 return (size); 1217 } 1218 /* 1219 * xdstrategy: buffering system interface to xd. 1220 */ 1221 1222 void 1223 xdstrategy(bp) 1224 struct buf *bp; 1225 1226 { 1227 struct xd_softc *xd; 1228 struct xdc_softc *parent; 1229 int s, unit; 1230 struct xdc_attach_args xa; 1231 1232 unit = DISKUNIT(bp->b_dev); 1233 1234 /* check for live device */ 1235 1236 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1237 bp->b_blkno < 0 || 1238 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1239 bp->b_error = EINVAL; 1240 goto bad; 1241 } 1242 /* do we need to attach the drive? */ 1243 1244 if (xd->state == XD_DRIVE_UNKNOWN) { 1245 xa.driveno = xd->xd_drive; 1246 xa.fullmode = XD_SUB_WAIT; 1247 xa.booting = 0; 1248 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1249 if (xd->state == XD_DRIVE_UNKNOWN) { 1250 bp->b_error = EIO; 1251 goto bad; 1252 } 1253 } 1254 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1255 /* no I/O to unlabeled disks, unless raw partition */ 1256 bp->b_error = EIO; 1257 goto bad; 1258 } 1259 /* short circuit zero length request */ 1260 1261 if (bp->b_bcount == 0) 1262 goto done; 1263 1264 /* check bounds with label (disksubr.c). Determine the size of the 1265 * transfer, and make sure it is within the boundaries of the 1266 * partition. Adjust transfer if needed, and signal errors or early 1267 * completion. */ 1268 1269 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1270 (xd->flags & XD_WLABEL) != 0) <= 0) 1271 goto done; 1272 1273 /* 1274 * now we know we have a valid buf structure that we need to do I/O 1275 * on. 1276 * 1277 * note that we don't disksort because the controller has a sorting 1278 * algorithm built into the hardware. 1279 */ 1280 1281 s = splbio(); /* protect the queues */ 1282 1283 /* first, give jobs in front of us a chance */ 1284 parent = xd->parent; 1285 while (parent->nfree > 0 && BUFQ_FIRST(&parent->sc_wq) != NULL) 1286 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1287 break; 1288 1289 /* if there are no free iorq's, then we just queue and return. the 1290 * buffs will get picked up later by xdcintr(). 1291 */ 1292 1293 if (parent->nfree == 0) { 1294 BUFQ_INSERT_TAIL(&parent->sc_wq, bp); 1295 splx(s); 1296 return; 1297 } 1298 1299 /* now we have free iopb's and we are at splbio... start 'em up */ 1300 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1301 return; 1302 } 1303 1304 /* done! */ 1305 1306 splx(s); 1307 return; 1308 1309 bad: /* tells upper layers we have an error */ 1310 bp->b_flags |= B_ERROR; 1311 done: /* tells upper layers we are done with this 1312 * buf */ 1313 bp->b_resid = bp->b_bcount; 1314 biodone(bp); 1315 } 1316 /* 1317 * end of {b,c}devsw functions 1318 */ 1319 1320 /* 1321 * i n t e r r u p t f u n c t i o n 1322 * 1323 * xdcintr: hardware interrupt. 1324 */ 1325 int 1326 xdcintr(v) 1327 void *v; 1328 1329 { 1330 struct xdc_softc *xdcsc = v; 1331 1332 /* kick the event counter */ 1333 1334 xdcsc->sc_intrcnt.ev_count++; 1335 1336 /* remove as many done IOPBs as possible */ 1337 1338 xdc_remove_iorq(xdcsc); 1339 1340 /* start any iorq's already waiting */ 1341 1342 xdc_start(xdcsc, XDC_MAXIOPB); 1343 1344 /* fill up any remaining iorq's with queue'd buffers */ 1345 1346 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1347 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1348 break; 1349 1350 return (1); 1351 } 1352 /* 1353 * end of interrupt function 1354 */ 1355 1356 /* 1357 * i n t e r n a l f u n c t i o n s 1358 */ 1359 1360 /* 1361 * xdc_rqinit: fill out the fields of an I/O request 1362 */ 1363 1364 inline void 1365 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1366 struct xd_iorq *rq; 1367 struct xdc_softc *xdc; 1368 struct xd_softc *xd; 1369 int md; 1370 u_long blk; 1371 int cnt; 1372 caddr_t db; 1373 struct buf *bp; 1374 { 1375 rq->xdc = xdc; 1376 rq->xd = xd; 1377 rq->ttl = XDC_MAXTTL + 10; 1378 rq->mode = md; 1379 rq->tries = rq->errno = rq->lasterror = 0; 1380 rq->blockno = blk; 1381 rq->sectcnt = cnt; 1382 rq->dbuf = db; 1383 rq->buf = bp; 1384 } 1385 /* 1386 * xdc_rqtopb: load up an IOPB based on an iorq 1387 */ 1388 1389 void 1390 xdc_rqtopb(iorq, iopb, cmd, subfun) 1391 struct xd_iorq *iorq; 1392 struct xd_iopb *iopb; 1393 int cmd, subfun; 1394 1395 { 1396 u_long block, dp; 1397 1398 /* standard stuff */ 1399 1400 iopb->errs = iopb->done = 0; 1401 iopb->comm = cmd; 1402 iopb->errno = iopb->status = 0; 1403 iopb->subfun = subfun; 1404 if (iorq->xd) 1405 iopb->unit = iorq->xd->xd_drive; 1406 else 1407 iopb->unit = 0; 1408 1409 /* check for alternate IOPB format */ 1410 1411 if (cmd == XDCMD_WRP) { 1412 switch (subfun) { 1413 case XDFUN_CTL:{ 1414 struct xd_iopb_ctrl *ctrl = 1415 (struct xd_iopb_ctrl *) iopb; 1416 iopb->lll = 0; 1417 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1418 ? 0 1419 : iorq->xdc->ipl; 1420 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1421 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1422 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1423 XDPC_RBC | XDPC_ECC2; 1424 ctrl->throttle = XDC_THROTTLE; 1425 ctrl->delay = XDC_DELAY; 1426 break; 1427 } 1428 case XDFUN_DRV:{ 1429 struct xd_iopb_drive *drv = 1430 (struct xd_iopb_drive *)iopb; 1431 /* we assume that the disk label has the right 1432 * info */ 1433 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1434 drv->dparam_ipl = (XDC_DPARAM << 3); 1435 else 1436 drv->dparam_ipl = (XDC_DPARAM << 3) | 1437 iorq->xdc->ipl; 1438 drv->maxsect = iorq->xd->nsect - 1; 1439 drv->maxsector = drv->maxsect; 1440 /* note: maxsector != maxsect only if you are 1441 * doing cyl sparing */ 1442 drv->headoff = 0; 1443 drv->maxcyl = iorq->xd->pcyl - 1; 1444 drv->maxhead = iorq->xd->nhead - 1; 1445 break; 1446 } 1447 case XDFUN_FMT:{ 1448 struct xd_iopb_format *form = 1449 (struct xd_iopb_format *) iopb; 1450 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1451 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1452 else 1453 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1454 iorq->xdc->ipl; 1455 form->field1 = XDFM_FIELD1; 1456 form->field2 = XDFM_FIELD2; 1457 form->field3 = XDFM_FIELD3; 1458 form->field4 = XDFM_FIELD4; 1459 form->bytespersec = XDFM_BPS; 1460 form->field6 = XDFM_FIELD6; 1461 form->field7 = XDFM_FIELD7; 1462 break; 1463 } 1464 } 1465 } else { 1466 1467 /* normal IOPB case (harmless to RDP command) */ 1468 1469 iopb->lll = 0; 1470 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1471 ? 0 1472 : iorq->xdc->ipl; 1473 iopb->sectcnt = iorq->sectcnt; 1474 block = iorq->blockno; 1475 if (iorq->xd == NULL || block == 0) { 1476 iopb->sectno = iopb->headno = iopb->cylno = 0; 1477 } else { 1478 iopb->sectno = block % iorq->xd->nsect; 1479 block = block / iorq->xd->nsect; 1480 iopb->headno = block % iorq->xd->nhead; 1481 block = block / iorq->xd->nhead; 1482 iopb->cylno = block; 1483 } 1484 dp = (u_long) iorq->dbuf; 1485 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1486 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1487 ? XDC_ADDRMOD32 1488 : XDC_ADDRMOD; 1489 } 1490 } 1491 1492 /* 1493 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1494 * If you've already got an IORQ, you can call submit directly (currently 1495 * there is no need to do this). NORM requests are handled seperately. 1496 */ 1497 int 1498 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1499 struct xdc_softc *xdcsc; 1500 int cmd, subfn, unit, block, scnt; 1501 char *dptr; 1502 int fullmode; 1503 1504 { 1505 int rqno, submode = XD_STATE(fullmode), retry; 1506 struct xd_iorq *iorq; 1507 struct xd_iopb *iopb; 1508 1509 /* get iorq/iopb */ 1510 switch (submode) { 1511 case XD_SUB_POLL: 1512 while (xdcsc->nfree == 0) { 1513 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1514 return (XD_ERR_FAIL); 1515 } 1516 break; 1517 case XD_SUB_WAIT: 1518 retry = 1; 1519 while (retry) { 1520 while (xdcsc->nfree == 0) { 1521 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1522 return (XD_ERR_FAIL); 1523 } 1524 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1525 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1526 return (XD_ERR_FAIL); 1527 } 1528 if (xdcsc->nfree) 1529 retry = 0; /* got it */ 1530 } 1531 break; 1532 default: 1533 return (XD_ERR_FAIL); /* illegal */ 1534 } 1535 if (xdcsc->nfree == 0) 1536 panic("xdcmd nfree"); 1537 rqno = XDC_RQALLOC(xdcsc); 1538 iorq = &xdcsc->reqs[rqno]; 1539 iopb = iorq->iopb; 1540 1541 1542 /* init iorq/iopb */ 1543 1544 xdc_rqinit(iorq, xdcsc, 1545 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1546 fullmode, block, scnt, dptr, NULL); 1547 1548 /* load IOPB from iorq */ 1549 1550 xdc_rqtopb(iorq, iopb, cmd, subfn); 1551 1552 /* submit it for processing */ 1553 1554 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1555 1556 return (rqno); 1557 } 1558 /* 1559 * xdc_startbuf 1560 * start a buffer running, assumes nfree > 0 1561 */ 1562 1563 int 1564 xdc_startbuf(xdcsc, xdsc, bp) 1565 struct xdc_softc *xdcsc; 1566 struct xd_softc *xdsc; 1567 struct buf *bp; 1568 1569 { 1570 int rqno, partno; 1571 struct xd_iorq *iorq; 1572 struct xd_iopb *iopb; 1573 u_long block; 1574 /* caddr_t dbuf;*/ 1575 int error; 1576 1577 if (!xdcsc->nfree) 1578 panic("xdc_startbuf free"); 1579 rqno = XDC_RQALLOC(xdcsc); 1580 iorq = &xdcsc->reqs[rqno]; 1581 iopb = iorq->iopb; 1582 1583 /* get buf */ 1584 1585 if (bp == NULL) { 1586 bp = BUFQ_FIRST(&xdcsc->sc_wq); 1587 if (bp == NULL) 1588 panic("xdc_startbuf bp"); 1589 BUFQ_REMOVE(&xdcsc->sc_wq, bp); 1590 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1591 } 1592 partno = DISKPART(bp->b_dev); 1593 #ifdef XDC_DEBUG 1594 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1595 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1596 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1597 bp->b_bcount, bp->b_data); 1598 #endif 1599 1600 /* 1601 * load request. we have to calculate the correct block number based 1602 * on partition info. 1603 * 1604 * note that iorq points to the buffer as mapped into DVMA space, 1605 * where as the bp->b_data points to its non-DVMA mapping. 1606 */ 1607 1608 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1609 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1610 1611 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1612 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1613 if (error != 0) { 1614 printf("%s: warning: cannot load DMA map\n", 1615 xdcsc->sc_dev.dv_xname); 1616 XDC_FREE(xdcsc, rqno); 1617 BUFQ_INSERT_TAIL(&xdcsc->sc_wq, bp); 1618 return (XD_ERR_FAIL); /* XXX: need some sort of 1619 * call-back scheme here? */ 1620 } 1621 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1622 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1623 ? BUS_DMASYNC_PREREAD 1624 : BUS_DMASYNC_PREWRITE); 1625 1626 /* init iorq and load iopb from it */ 1627 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1628 bp->b_bcount / XDFM_BPS, 1629 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1630 bp); 1631 1632 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1633 1634 /* Instrumentation. */ 1635 disk_busy(&xdsc->sc_dk); 1636 1637 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1638 1639 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1640 return (XD_ERR_AOK); 1641 } 1642 1643 1644 /* 1645 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1646 * if ok. if it fail returns an error code. type is XD_SUB_*. 1647 * 1648 * note: caller frees iorq in all cases except NORM 1649 * 1650 * return value: 1651 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1652 * WAIT: XD_AOK (success), <error-code> (failed) 1653 * POLL: <same as WAIT> 1654 * NOQ : <same as NORM> 1655 * 1656 * there are three sources for i/o requests: 1657 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1658 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1659 * [3] open/ioctl: these are I/O requests done in the context of a process, 1660 * and the process should block until they are done. 1661 * 1662 * software state is stored in the iorq structure. each iorq has an 1663 * iopb structure. the hardware understands the iopb structure. 1664 * every command must go through an iopb. a 7053 can only handle 1665 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1666 * DVMA space at boot up time. what happens if we run out of iopb's? 1667 * for i/o type [1], the buffers are queued at the "buff" layer and 1668 * picked up later by the interrupt routine. for case [2] the 1669 * programmed i/o driver is called with a special flag that says 1670 * return when one iopb is free. for case [3] the process can sleep 1671 * on the iorq free list until some iopbs are avaliable. 1672 */ 1673 1674 1675 int 1676 xdc_submit_iorq(xdcsc, iorqno, type) 1677 struct xdc_softc *xdcsc; 1678 int iorqno; 1679 int type; 1680 1681 { 1682 u_long iopbaddr; 1683 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1684 1685 #ifdef XDC_DEBUG 1686 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1687 iorqno, type); 1688 #endif 1689 1690 /* first check and see if controller is busy */ 1691 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1692 #ifdef XDC_DEBUG 1693 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1694 #endif 1695 if (type == XD_SUB_NOQ) 1696 return (XD_ERR_FAIL); /* failed */ 1697 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1698 switch (type) { 1699 case XD_SUB_NORM: 1700 return XD_ERR_AOK; /* success */ 1701 case XD_SUB_WAIT: 1702 while (iorq->iopb->done == 0) { 1703 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1704 } 1705 return (iorq->errno); 1706 case XD_SUB_POLL: 1707 return (xdc_piodriver(xdcsc, iorqno, 0)); 1708 default: 1709 panic("xdc_submit_iorq adding"); 1710 } 1711 } 1712 #ifdef XDC_DEBUG 1713 { 1714 u_char *rio = (u_char *) iorq->iopb; 1715 int sz = sizeof(struct xd_iopb), lcv; 1716 printf("%s: aio #%d [", 1717 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1718 for (lcv = 0; lcv < sz; lcv++) 1719 printf(" %02x", rio[lcv]); 1720 printf("]\n"); 1721 } 1722 #endif /* XDC_DEBUG */ 1723 1724 /* controller not busy, start command */ 1725 iopbaddr = (u_long) iorq->dmaiopb; 1726 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1727 xdcsc->nrun++; 1728 /* command now running, wrap it up */ 1729 switch (type) { 1730 case XD_SUB_NORM: 1731 case XD_SUB_NOQ: 1732 return (XD_ERR_AOK); /* success */ 1733 case XD_SUB_WAIT: 1734 while (iorq->iopb->done == 0) { 1735 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1736 } 1737 return (iorq->errno); 1738 case XD_SUB_POLL: 1739 return (xdc_piodriver(xdcsc, iorqno, 0)); 1740 default: 1741 panic("xdc_submit_iorq wrap up"); 1742 } 1743 panic("xdc_submit_iorq"); 1744 return 0; /* not reached */ 1745 } 1746 1747 1748 /* 1749 * xdc_piodriver 1750 * 1751 * programmed i/o driver. this function takes over the computer 1752 * and drains off all i/o requests. it returns the status of the iorq 1753 * the caller is interesting in. if freeone is true, then it returns 1754 * when there is a free iorq. 1755 */ 1756 int 1757 xdc_piodriver(xdcsc, iorqno, freeone) 1758 struct xdc_softc *xdcsc; 1759 int iorqno; 1760 int freeone; 1761 1762 { 1763 int nreset = 0; 1764 int retval = 0; 1765 u_long count; 1766 struct xdc *xdc = xdcsc->xdc; 1767 #ifdef XDC_DEBUG 1768 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1769 iorqno, freeone); 1770 #endif 1771 1772 while (xdcsc->nwait || xdcsc->nrun) { 1773 #ifdef XDC_DEBUG 1774 printf("xdc_piodriver: wait=%d, run=%d\n", 1775 xdcsc->nwait, xdcsc->nrun); 1776 #endif 1777 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1778 #ifdef XDC_DEBUG 1779 printf("xdc_piodriver: done wait with count = %d\n", count); 1780 #endif 1781 /* we expect some progress soon */ 1782 if (count == 0 && nreset >= 2) { 1783 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1784 #ifdef XDC_DEBUG 1785 printf("xdc_piodriver: timeout\n"); 1786 #endif 1787 return (XD_ERR_FAIL); 1788 } 1789 if (count == 0) { 1790 if (xdc_reset(xdcsc, 0, 1791 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1792 XD_ERR_FAIL, 1793 0) == XD_ERR_FAIL) 1794 return (XD_ERR_FAIL); /* flushes all but POLL 1795 * requests, resets */ 1796 continue; 1797 } 1798 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1799 if (freeone) { 1800 if (xdcsc->nrun < XDC_MAXIOPB) { 1801 #ifdef XDC_DEBUG 1802 printf("xdc_piodriver: done: one free\n"); 1803 #endif 1804 return (XD_ERR_AOK); 1805 } 1806 continue; /* don't xdc_start */ 1807 } 1808 xdc_start(xdcsc, XDC_MAXIOPB); 1809 } 1810 1811 /* get return value */ 1812 1813 retval = xdcsc->reqs[iorqno].errno; 1814 1815 #ifdef XDC_DEBUG 1816 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1817 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1818 #endif 1819 1820 /* now that we've drained everything, start up any bufs that have 1821 * queued */ 1822 1823 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1824 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1825 break; 1826 1827 return (retval); 1828 } 1829 1830 /* 1831 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1832 * we steal iopb[0] for this, but we put it back when we are done. 1833 */ 1834 void 1835 xdc_xdreset(xdcsc, xdsc) 1836 struct xdc_softc *xdcsc; 1837 struct xd_softc *xdsc; 1838 1839 { 1840 struct xd_iopb tmpiopb; 1841 u_long addr; 1842 int del; 1843 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1844 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1845 xdcsc->iopbase->comm = XDCMD_RST; 1846 xdcsc->iopbase->unit = xdsc->xd_drive; 1847 addr = (u_long) xdcsc->dvmaiopb; 1848 XDC_GO(xdcsc->xdc, addr); /* go! */ 1849 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1850 if (del <= 0 || xdcsc->iopbase->errs) { 1851 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1852 xdc_e2str(xdcsc->iopbase->errno)); 1853 xdcsc->xdc->xdc_csr = XDC_RESET; 1854 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1855 if (del <= 0) 1856 panic("xdc_reset"); 1857 } else { 1858 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1859 } 1860 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1861 } 1862 1863 1864 /* 1865 * xdc_reset: reset everything: requests are marked as errors except 1866 * a polled request (which is resubmitted) 1867 */ 1868 int 1869 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1870 struct xdc_softc *xdcsc; 1871 int quiet, blastmode, error; 1872 struct xd_softc *xdsc; 1873 1874 { 1875 int del = 0, lcv, retval = XD_ERR_AOK; 1876 int oldfree = xdcsc->nfree; 1877 1878 /* soft reset hardware */ 1879 1880 if (!quiet) 1881 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1882 xdcsc->xdc->xdc_csr = XDC_RESET; 1883 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1884 if (del <= 0) { 1885 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1886 retval = XD_ERR_FAIL; 1887 } 1888 if (xdsc) 1889 xdc_xdreset(xdcsc, xdsc); 1890 1891 /* fix queues based on "blast-mode" */ 1892 1893 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1894 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1895 1896 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1897 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1898 XD_STATE(iorq->mode) != XD_SUB_NORM) 1899 /* is it active? */ 1900 continue; 1901 1902 xdcsc->nrun--; /* it isn't running any more */ 1903 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1904 /* failed */ 1905 iorq->errno = error; 1906 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1907 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1908 case XD_SUB_NORM: 1909 iorq->buf->b_error = EIO; 1910 iorq->buf->b_flags |= B_ERROR; 1911 iorq->buf->b_resid = 1912 iorq->sectcnt * XDFM_BPS; 1913 1914 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1915 iorq->dmamap->dm_mapsize, 1916 (iorq->buf->b_flags & B_READ) 1917 ? BUS_DMASYNC_POSTREAD 1918 : BUS_DMASYNC_POSTWRITE); 1919 1920 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1921 1922 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1923 (xdcsc->reqs[lcv].buf->b_bcount - 1924 xdcsc->reqs[lcv].buf->b_resid)); 1925 biodone(iorq->buf); 1926 XDC_FREE(xdcsc, lcv); /* add to free list */ 1927 break; 1928 case XD_SUB_WAIT: 1929 wakeup(iorq); 1930 case XD_SUB_POLL: 1931 xdcsc->ndone++; 1932 iorq->mode = 1933 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1934 break; 1935 } 1936 1937 } else { 1938 1939 /* resubmit, put at front of wait queue */ 1940 XDC_HWAIT(xdcsc, lcv); 1941 } 1942 } 1943 1944 /* 1945 * now, if stuff is waiting, start it. 1946 * since we just reset it should go 1947 */ 1948 xdc_start(xdcsc, XDC_MAXIOPB); 1949 1950 /* ok, we did it */ 1951 if (oldfree == 0 && xdcsc->nfree) 1952 wakeup(&xdcsc->nfree); 1953 1954 #ifdef XDC_DIAG 1955 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1956 if (del != XDC_MAXIOPB) 1957 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1958 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1959 else 1960 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1961 printf("%s: diag: lots of done jobs (%d)\n", 1962 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1963 #endif 1964 printf("RESET DONE\n"); 1965 return (retval); 1966 } 1967 /* 1968 * xdc_start: start all waiting buffers 1969 */ 1970 1971 void 1972 xdc_start(xdcsc, maxio) 1973 struct xdc_softc *xdcsc; 1974 int maxio; 1975 1976 { 1977 int rqno; 1978 while (maxio && xdcsc->nwait && 1979 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1980 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1981 * param */ 1982 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1983 panic("xdc_start"); /* should never happen */ 1984 maxio--; 1985 } 1986 } 1987 /* 1988 * xdc_remove_iorq: remove "done" IOPB's. 1989 */ 1990 1991 int 1992 xdc_remove_iorq(xdcsc) 1993 struct xdc_softc *xdcsc; 1994 1995 { 1996 int errno, rqno, comm, errs; 1997 struct xdc *xdc = xdcsc->xdc; 1998 struct xd_iopb *iopb; 1999 struct xd_iorq *iorq; 2000 struct buf *bp; 2001 2002 if (xdc->xdc_csr & XDC_F_ERROR) { 2003 /* 2004 * FATAL ERROR: should never happen under normal use. This 2005 * error is so bad, you can't even tell which IOPB is bad, so 2006 * we dump them all. 2007 */ 2008 errno = xdc->xdc_f_err; 2009 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2010 errno, xdc_e2str(errno)); 2011 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2012 printf("%s: soft reset failed!\n", 2013 xdcsc->sc_dev.dv_xname); 2014 panic("xdc_remove_iorq: controller DEAD"); 2015 } 2016 return (XD_ERR_AOK); 2017 } 2018 2019 /* 2020 * get iopb that is done 2021 * 2022 * hmm... I used to read the address of the done IOPB off the VME 2023 * registers and calculate the rqno directly from that. that worked 2024 * until I started putting a load on the controller. when loaded, i 2025 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2026 * be set, even after DELAY'ing a while! later on the timeout 2027 * routine would detect IOPBs that were marked "running" but their 2028 * "done" bit was set. rather than dealing directly with this 2029 * problem, it is just easier to look at all running IOPB's for the 2030 * done bit. 2031 */ 2032 if (xdc->xdc_csr & XDC_REMIOPB) { 2033 xdc->xdc_csr = XDC_CLRRIO; 2034 } 2035 2036 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2037 iorq = &xdcsc->reqs[rqno]; 2038 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2039 continue; /* free, or done */ 2040 iopb = &xdcsc->iopbase[rqno]; 2041 if (iopb->done == 0) 2042 continue; /* not done yet */ 2043 2044 #ifdef XDC_DEBUG 2045 { 2046 u_char *rio = (u_char *) iopb; 2047 int sz = sizeof(struct xd_iopb), lcv; 2048 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2049 for (lcv = 0; lcv < sz; lcv++) 2050 printf(" %02x", rio[lcv]); 2051 printf("]\n"); 2052 } 2053 #endif /* XDC_DEBUG */ 2054 2055 xdcsc->nrun--; 2056 2057 comm = iopb->comm; 2058 errs = iopb->errs; 2059 2060 if (errs) 2061 iorq->errno = iopb->errno; 2062 else 2063 iorq->errno = 0; 2064 2065 /* handle non-fatal errors */ 2066 2067 if (errs && 2068 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2069 continue; /* AOK: we resubmitted it */ 2070 2071 2072 /* this iorq is now done (hasn't been restarted or anything) */ 2073 2074 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2075 xdc_perror(iorq, iopb, 0); 2076 2077 /* now, if read/write check to make sure we got all the data 2078 * we needed. (this may not be the case if we got an error in 2079 * the middle of a multisector request). */ 2080 2081 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2082 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2083 /* we just successfully processed a bad144 sector 2084 * note: if we are in bad 144 mode, the pointers have 2085 * been advanced already (see above) and are pointing 2086 * at the bad144 sector. to exit bad144 mode, we 2087 * must advance the pointers 1 sector and issue a new 2088 * request if there are still sectors left to process 2089 * 2090 */ 2091 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2092 2093 /* exit b144 mode */ 2094 iorq->mode = iorq->mode & (~XD_MODE_B144); 2095 2096 if (iorq->sectcnt) { /* more to go! */ 2097 iorq->lasterror = iorq->errno = iopb->errno = 0; 2098 iopb->errs = iopb->done = 0; 2099 iorq->tries = 0; 2100 iopb->sectcnt = iorq->sectcnt; 2101 iopb->cylno = iorq->blockno / 2102 iorq->xd->sectpercyl; 2103 iopb->headno = 2104 (iorq->blockno / iorq->xd->nhead) % 2105 iorq->xd->nhead; 2106 iopb->sectno = iorq->blockno % XDFM_BPS; 2107 iopb->daddr = (u_long) iorq->dbuf; 2108 XDC_HWAIT(xdcsc, rqno); 2109 xdc_start(xdcsc, 1); /* resubmit */ 2110 continue; 2111 } 2112 } 2113 /* final cleanup, totally done with this request */ 2114 2115 switch (XD_STATE(iorq->mode)) { 2116 case XD_SUB_NORM: 2117 bp = iorq->buf; 2118 if (errs) { 2119 bp->b_error = EIO; 2120 bp->b_flags |= B_ERROR; 2121 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2122 } else { 2123 bp->b_resid = 0; /* done */ 2124 } 2125 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2126 iorq->dmamap->dm_mapsize, 2127 (bp->b_flags & B_READ) 2128 ? BUS_DMASYNC_POSTREAD 2129 : BUS_DMASYNC_POSTWRITE); 2130 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2131 2132 disk_unbusy(&iorq->xd->sc_dk, 2133 (bp->b_bcount - bp->b_resid)); 2134 XDC_FREE(xdcsc, rqno); 2135 biodone(bp); 2136 break; 2137 case XD_SUB_WAIT: 2138 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2139 xdcsc->ndone++; 2140 wakeup(iorq); 2141 break; 2142 case XD_SUB_POLL: 2143 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2144 xdcsc->ndone++; 2145 break; 2146 } 2147 } 2148 2149 return (XD_ERR_AOK); 2150 } 2151 2152 /* 2153 * xdc_perror: print error. 2154 * - if still_trying is true: we got an error, retried and got a 2155 * different error. in that case lasterror is the old error, 2156 * and errno is the new one. 2157 * - if still_trying is not true, then if we ever had an error it 2158 * is in lasterror. also, if iorq->errno == 0, then we recovered 2159 * from that error (otherwise iorq->errno == iorq->lasterror). 2160 */ 2161 void 2162 xdc_perror(iorq, iopb, still_trying) 2163 struct xd_iorq *iorq; 2164 struct xd_iopb *iopb; 2165 int still_trying; 2166 2167 { 2168 2169 int error = iorq->lasterror; 2170 2171 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2172 : iorq->xdc->sc_dev.dv_xname); 2173 if (iorq->buf) 2174 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2175 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2176 printf("%s %d/%d/%d: ", 2177 (iopb->comm == XDCMD_RD) ? "read" : "write", 2178 iopb->cylno, iopb->headno, iopb->sectno); 2179 printf("%s", xdc_e2str(error)); 2180 2181 if (still_trying) 2182 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2183 else 2184 if (iorq->errno == 0) 2185 printf(" [recovered in %d tries]", iorq->tries); 2186 2187 printf("\n"); 2188 } 2189 2190 /* 2191 * xdc_error: non-fatal error encountered... recover. 2192 * return AOK if resubmitted, return FAIL if this iopb is done 2193 */ 2194 int 2195 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2196 struct xdc_softc *xdcsc; 2197 struct xd_iorq *iorq; 2198 struct xd_iopb *iopb; 2199 int rqno, comm; 2200 2201 { 2202 int errno = iorq->errno; 2203 int erract = errno & XD_ERA_MASK; 2204 int oldmode, advance; 2205 #ifdef __sparc__ 2206 int i; 2207 #endif 2208 2209 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2210 oldmode = iorq->mode; 2211 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2212 xdcsc->ndone++; 2213 /* make xdc_start ignore us */ 2214 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2215 iorq->mode = oldmode; 2216 xdcsc->ndone--; 2217 } 2218 /* check for read/write to a sector in bad144 table if bad: redirect 2219 * request to bad144 area */ 2220 2221 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2222 (iorq->mode & XD_MODE_B144) == 0) { 2223 advance = iorq->sectcnt - iopb->sectcnt; 2224 XDC_ADVANCE(iorq, advance); 2225 #ifdef __sparc__ 2226 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2227 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2228 iorq->blockno % iorq->xd->nsect)) != -1) { 2229 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2230 * redirect */ 2231 iopb->errno = iopb->done = iopb->errs = 0; 2232 iopb->sectcnt = 1; 2233 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2234 /* second to last acyl */ 2235 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2236 * standard */ 2237 iopb->headno = i / iorq->xd->nhead; 2238 iopb->sectno = i % iorq->xd->nhead; 2239 XDC_HWAIT(xdcsc, rqno); 2240 xdc_start(xdcsc, 1); /* resubmit */ 2241 return (XD_ERR_AOK); /* recovered! */ 2242 } 2243 #endif 2244 } 2245 2246 /* 2247 * it isn't a bad144 sector, must be real error! see if we can retry 2248 * it? 2249 */ 2250 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2251 xdc_perror(iorq, iopb, 1); /* inform of error state 2252 * change */ 2253 iorq->lasterror = errno; 2254 2255 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2256 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2257 iorq->tries++; 2258 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2259 XDC_HWAIT(xdcsc, rqno); 2260 xdc_start(xdcsc, 1); /* restart */ 2261 return (XD_ERR_AOK); /* recovered! */ 2262 } 2263 2264 /* failed to recover from this error */ 2265 return (XD_ERR_FAIL); 2266 } 2267 2268 /* 2269 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2270 */ 2271 void 2272 xdc_tick(arg) 2273 void *arg; 2274 2275 { 2276 struct xdc_softc *xdcsc = arg; 2277 int lcv, s, reset = 0; 2278 #ifdef XDC_DIAG 2279 int wait, run, free, done, whd = 0; 2280 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2281 s = splbio(); 2282 wait = xdcsc->nwait; 2283 run = xdcsc->nrun; 2284 free = xdcsc->nfree; 2285 done = xdcsc->ndone; 2286 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2287 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2288 splx(s); 2289 if (wait + run + free + done != XDC_MAXIOPB) { 2290 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2291 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2292 bzero(mark, sizeof(mark)); 2293 printf("FREE: "); 2294 for (lcv = free; lcv > 0; lcv--) { 2295 printf("%d ", fqc[lcv - 1]); 2296 mark[fqc[lcv - 1]] = 1; 2297 } 2298 printf("\nWAIT: "); 2299 lcv = wait; 2300 while (lcv > 0) { 2301 printf("%d ", wqc[whd]); 2302 mark[wqc[whd]] = 1; 2303 whd = (whd + 1) % XDC_MAXIOPB; 2304 lcv--; 2305 } 2306 printf("\n"); 2307 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2308 if (mark[lcv] == 0) 2309 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2310 lcv, xdcsc->reqs[lcv].mode, 2311 xdcsc->iopbase[lcv].done, 2312 xdcsc->iopbase[lcv].errs, 2313 xdcsc->iopbase[lcv].errno, 2314 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2315 } 2316 } else 2317 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2318 printf("%s: diag: lots of done jobs (%d)\n", 2319 xdcsc->sc_dev.dv_xname, done); 2320 2321 #endif 2322 #ifdef XDC_DEBUG 2323 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2324 xdcsc->sc_dev.dv_xname, 2325 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2326 xdcsc->ndone); 2327 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2328 if (xdcsc->reqs[lcv].mode) 2329 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2330 lcv, 2331 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2332 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2333 } 2334 #endif 2335 2336 /* reduce ttl for each request if one goes to zero, reset xdc */ 2337 s = splbio(); 2338 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2339 if (xdcsc->reqs[lcv].mode == 0 || 2340 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2341 continue; 2342 xdcsc->reqs[lcv].ttl--; 2343 if (xdcsc->reqs[lcv].ttl == 0) 2344 reset = 1; 2345 } 2346 if (reset) { 2347 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2348 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2349 } 2350 splx(s); 2351 2352 /* until next time */ 2353 2354 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2355 } 2356 2357 /* 2358 * xdc_ioctlcmd: this function provides a user level interface to the 2359 * controller via ioctl. this allows "format" programs to be written 2360 * in user code, and is also useful for some debugging. we return 2361 * an error code. called at user priority. 2362 */ 2363 int 2364 xdc_ioctlcmd(xd, dev, xio) 2365 struct xd_softc *xd; 2366 dev_t dev; 2367 struct xd_iocmd *xio; 2368 2369 { 2370 int s, rqno, dummy; 2371 caddr_t dvmabuf = NULL, buf = NULL; 2372 struct xdc_softc *xdcsc; 2373 int rseg, error; 2374 bus_dma_segment_t seg; 2375 2376 /* check sanity of requested command */ 2377 2378 switch (xio->cmd) { 2379 2380 case XDCMD_NOP: /* no op: everything should be zero */ 2381 if (xio->subfn || xio->dptr || xio->dlen || 2382 xio->block || xio->sectcnt) 2383 return (EINVAL); 2384 break; 2385 2386 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2387 case XDCMD_WR: 2388 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2389 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2390 return (EINVAL); 2391 break; 2392 2393 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2394 return (EINVAL); 2395 2396 case XDCMD_WRP: /* write parameters */ 2397 return (EINVAL);/* not useful, except maybe drive 2398 * parameters... but drive parameters should 2399 * go via disklabel changes */ 2400 2401 case XDCMD_RDP: /* read parameters */ 2402 if (xio->subfn != XDFUN_DRV || 2403 xio->dlen || xio->block || xio->dptr) 2404 return (EINVAL); /* allow read drive params to 2405 * get hw_spt */ 2406 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2407 return (0); 2408 break; 2409 2410 case XDCMD_XRD: /* extended read/write */ 2411 case XDCMD_XWR: 2412 2413 switch (xio->subfn) { 2414 2415 case XDFUN_THD:/* track headers */ 2416 if (xio->sectcnt != xd->hw_spt || 2417 (xio->block % xd->nsect) != 0 || 2418 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2419 xio->dptr == NULL) 2420 return (EINVAL); 2421 xio->sectcnt = 0; 2422 break; 2423 2424 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2425 if (xio->cmd == XDCMD_XRD) 2426 return (EINVAL); /* no XDFUN_VFY */ 2427 if (xio->sectcnt || xio->dlen || 2428 (xio->block % xd->nsect) != 0 || xio->dptr) 2429 return (EINVAL); 2430 break; 2431 2432 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2433 return (EINVAL); /* not yet */ 2434 2435 case XDFUN_DM: /* defect map */ 2436 case XDFUN_DMX:/* defect map (alternate location) */ 2437 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2438 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2439 return (EINVAL); 2440 break; 2441 2442 default: 2443 return (EINVAL); 2444 } 2445 break; 2446 2447 case XDCMD_TST: /* diagnostics */ 2448 return (EINVAL); 2449 2450 default: 2451 return (EINVAL);/* ??? */ 2452 } 2453 2454 xdcsc = xd->parent; 2455 2456 /* create DVMA buffer for request if needed */ 2457 if (xio->dlen) { 2458 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2459 &seg, &rseg, 2460 xio->dlen, &buf, 2461 (bus_addr_t *)&dvmabuf)) != 0) { 2462 return (error); 2463 } 2464 2465 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2466 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2467 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2468 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2469 return (error); 2470 } 2471 } 2472 } 2473 2474 /* do it! */ 2475 2476 error = 0; 2477 s = splbio(); 2478 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2479 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2480 if (rqno == XD_ERR_FAIL) { 2481 error = EIO; 2482 goto done; 2483 } 2484 xio->errno = xdcsc->reqs[rqno].errno; 2485 xio->tries = xdcsc->reqs[rqno].tries; 2486 XDC_DONE(xdcsc, rqno, dummy); 2487 2488 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2489 error = copyout(buf, xio->dptr, xio->dlen); 2490 2491 done: 2492 splx(s); 2493 if (dvmabuf) { 2494 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2495 xio->dlen, buf); 2496 } 2497 return (error); 2498 } 2499 2500 /* 2501 * xdc_e2str: convert error code number into an error string 2502 */ 2503 char * 2504 xdc_e2str(no) 2505 int no; 2506 { 2507 switch (no) { 2508 case XD_ERR_FAIL: 2509 return ("Software fatal error"); 2510 case XD_ERR_AOK: 2511 return ("Successful completion"); 2512 case XD_ERR_ICYL: 2513 return ("Illegal cylinder address"); 2514 case XD_ERR_IHD: 2515 return ("Illegal head address"); 2516 case XD_ERR_ISEC: 2517 return ("Illgal sector address"); 2518 case XD_ERR_CZER: 2519 return ("Count zero"); 2520 case XD_ERR_UIMP: 2521 return ("Unimplemented command"); 2522 case XD_ERR_IF1: 2523 return ("Illegal field length 1"); 2524 case XD_ERR_IF2: 2525 return ("Illegal field length 2"); 2526 case XD_ERR_IF3: 2527 return ("Illegal field length 3"); 2528 case XD_ERR_IF4: 2529 return ("Illegal field length 4"); 2530 case XD_ERR_IF5: 2531 return ("Illegal field length 5"); 2532 case XD_ERR_IF6: 2533 return ("Illegal field length 6"); 2534 case XD_ERR_IF7: 2535 return ("Illegal field length 7"); 2536 case XD_ERR_ISG: 2537 return ("Illegal scatter/gather length"); 2538 case XD_ERR_ISPT: 2539 return ("Not enough sectors per track"); 2540 case XD_ERR_ALGN: 2541 return ("Next IOPB address alignment error"); 2542 case XD_ERR_SGAL: 2543 return ("Scatter/gather address alignment error"); 2544 case XD_ERR_SGEC: 2545 return ("Scatter/gather with auto-ECC"); 2546 case XD_ERR_SECC: 2547 return ("Soft ECC corrected"); 2548 case XD_ERR_SIGN: 2549 return ("ECC ignored"); 2550 case XD_ERR_ASEK: 2551 return ("Auto-seek retry recovered"); 2552 case XD_ERR_RTRY: 2553 return ("Soft retry recovered"); 2554 case XD_ERR_HECC: 2555 return ("Hard data ECC"); 2556 case XD_ERR_NHDR: 2557 return ("Header not found"); 2558 case XD_ERR_NRDY: 2559 return ("Drive not ready"); 2560 case XD_ERR_TOUT: 2561 return ("Operation timeout"); 2562 case XD_ERR_VTIM: 2563 return ("VMEDMA timeout"); 2564 case XD_ERR_DSEQ: 2565 return ("Disk sequencer error"); 2566 case XD_ERR_HDEC: 2567 return ("Header ECC error"); 2568 case XD_ERR_RVFY: 2569 return ("Read verify"); 2570 case XD_ERR_VFER: 2571 return ("Fatail VMEDMA error"); 2572 case XD_ERR_VBUS: 2573 return ("VMEbus error"); 2574 case XD_ERR_DFLT: 2575 return ("Drive faulted"); 2576 case XD_ERR_HECY: 2577 return ("Header error/cyliner"); 2578 case XD_ERR_HEHD: 2579 return ("Header error/head"); 2580 case XD_ERR_NOCY: 2581 return ("Drive not on-cylinder"); 2582 case XD_ERR_SEEK: 2583 return ("Seek error"); 2584 case XD_ERR_ILSS: 2585 return ("Illegal sector size"); 2586 case XD_ERR_SEC: 2587 return ("Soft ECC"); 2588 case XD_ERR_WPER: 2589 return ("Write-protect error"); 2590 case XD_ERR_IRAM: 2591 return ("IRAM self test failure"); 2592 case XD_ERR_MT3: 2593 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2594 case XD_ERR_MT4: 2595 return ("Maintenance test 4 failure (header shift reg)"); 2596 case XD_ERR_MT5: 2597 return ("Maintenance test 5 failure (VMEDMA regs)"); 2598 case XD_ERR_MT6: 2599 return ("Maintenance test 6 failure (REGCEL chip)"); 2600 case XD_ERR_MT7: 2601 return ("Maintenance test 7 failure (buffer parity)"); 2602 case XD_ERR_MT8: 2603 return ("Maintenance test 8 failure (disk FIFO)"); 2604 case XD_ERR_IOCK: 2605 return ("IOPB checksum miscompare"); 2606 case XD_ERR_IODM: 2607 return ("IOPB DMA fatal"); 2608 case XD_ERR_IOAL: 2609 return ("IOPB address alignment error"); 2610 case XD_ERR_FIRM: 2611 return ("Firmware error"); 2612 case XD_ERR_MMOD: 2613 return ("Illegal maintenance mode test number"); 2614 case XD_ERR_ACFL: 2615 return ("ACFAIL asserted"); 2616 default: 2617 return ("Unknown error"); 2618 } 2619 } 2620