xd.c revision 1.24
1 /* $NetBSD: xd.c,v 1.24 2000/05/19 18:54:31 thorpej 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 (at) 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 <vm/vm.h> 77 #include <vm/vm_kern.h> 78 79 #include <machine/bus.h> 80 #include <machine/intr.h> 81 82 #if defined(__sparc__) || defined(__sun3__) 83 #include <dev/sun/disklabel.h> 84 #endif 85 86 #include <dev/vme/vmevar.h> 87 88 #include <dev/vme/xdreg.h> 89 #include <dev/vme/xdvar.h> 90 #include <dev/vme/xio.h> 91 92 #include "locators.h" 93 94 /* 95 * macros 96 */ 97 98 /* 99 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 100 */ 101 #define XDC_TWAIT(SC, N) { \ 102 (SC)->waitq[(SC)->waitend] = (N); \ 103 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 104 (SC)->nwait++; \ 105 } 106 107 /* 108 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 109 */ 110 #define XDC_HWAIT(SC, N) { \ 111 (SC)->waithead = ((SC)->waithead == 0) ? \ 112 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 113 (SC)->waitq[(SC)->waithead] = (N); \ 114 (SC)->nwait++; \ 115 } 116 117 /* 118 * XDC_GET_WAITER: gets the first request waiting on the waitq 119 * and removes it (so it can be submitted) 120 */ 121 #define XDC_GET_WAITER(XDCSC, RQ) { \ 122 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 123 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 124 xdcsc->nwait--; \ 125 } 126 127 /* 128 * XDC_FREE: add iorq "N" to SC's free list 129 */ 130 #define XDC_FREE(SC, N) { \ 131 (SC)->freereq[(SC)->nfree++] = (N); \ 132 (SC)->reqs[N].mode = 0; \ 133 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 134 } 135 136 137 /* 138 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 139 */ 140 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 141 142 /* 143 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 144 */ 145 #define XDC_GO(XDC, ADDR) { \ 146 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 147 (ADDR) = ((ADDR) >> 8); \ 148 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 149 (ADDR) = ((ADDR) >> 8); \ 150 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 151 (ADDR) = ((ADDR) >> 8); \ 152 (XDC)->xdc_iopbaddr3 = (ADDR); \ 153 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 154 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 155 } 156 157 /* 158 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 159 * LCV is a counter. If it goes to zero then we timed out. 160 */ 161 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 162 (LCV) = (TIME); \ 163 while ((LCV) > 0) { \ 164 if ((XDC)->xdc_csr & (BITS)) break; \ 165 (LCV) = (LCV) - 1; \ 166 DELAY(1); \ 167 } \ 168 } 169 170 /* 171 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 172 */ 173 #define XDC_DONE(SC,RQ,ER) { \ 174 if ((RQ) == XD_ERR_FAIL) { \ 175 (ER) = (RQ); \ 176 } else { \ 177 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 178 wakeup(&(SC)->ndone); \ 179 (ER) = (SC)->reqs[RQ].errno; \ 180 XDC_FREE((SC), (RQ)); \ 181 } \ 182 } 183 184 /* 185 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 186 */ 187 #define XDC_ADVANCE(IORQ, N) { \ 188 if (N) { \ 189 (IORQ)->sectcnt -= (N); \ 190 (IORQ)->blockno += (N); \ 191 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 192 } \ 193 } 194 195 /* 196 * note - addresses you can sleep on: 197 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 198 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 199 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 200 * to drop below XDC_SUBWAITLIM) 201 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 202 */ 203 204 205 /* 206 * function prototypes 207 * "xdc_*" functions are internal, all others are external interfaces 208 */ 209 210 extern int pil_to_vme[]; /* from obio.c */ 211 212 /* internals */ 213 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 214 char *xdc_e2str __P((int)); 215 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 216 struct xd_iopb *, int, int)); 217 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 218 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 219 int xdc_piodriver __P((struct xdc_softc *, int, int)); 220 int xdc_remove_iorq __P((struct xdc_softc *)); 221 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 222 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 223 struct xd_softc *, int, u_long, int, 224 caddr_t, struct buf *)); 225 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 226 void xdc_start __P((struct xdc_softc *, int)); 227 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 228 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 229 void xdc_tick __P((void *)); 230 void xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 231 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 232 int *, bus_size_t, caddr_t *, bus_addr_t *); 233 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 234 int, bus_size_t, caddr_t); 235 236 237 /* machine interrupt hook */ 238 int xdcintr __P((void *)); 239 240 /* autoconf */ 241 int xdcmatch __P((struct device *, struct cfdata *, void *)); 242 void xdcattach __P((struct device *, struct device *, void *)); 243 int xdmatch __P((struct device *, struct cfdata *, void *)); 244 void xdattach __P((struct device *, struct device *, void *)); 245 static int xdc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 246 247 static void xddummystrat __P((struct buf *)); 248 int xdgetdisklabel __P((struct xd_softc *, void *)); 249 250 bdev_decl(xd); 251 cdev_decl(xd); 252 253 /* XXX - think about this more.. xd_machdep? */ 254 void xdc_md_setup __P((void)); 255 int XDC_DELAY; 256 257 #if defined(__sparc__) 258 #include <sparc/sparc/vaddrs.h> 259 #include <sparc/sparc/cpuvar.h> 260 void xdc_md_setup() 261 { 262 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 263 XDC_DELAY = XDC_DELAY_4_300; 264 else 265 XDC_DELAY = XDC_DELAY_SPARC; 266 } 267 #elif defined(__sun3__) 268 void xdc_md_setup() 269 { 270 XDC_DELAY = XDC_DELAY_SUN3; 271 } 272 #else 273 void xdc_md_setup() 274 { 275 XDC_DELAY = 0; 276 } 277 #endif 278 279 /* 280 * cfattach's: device driver interface to autoconfig 281 */ 282 283 struct cfattach xdc_ca = { 284 sizeof(struct xdc_softc), xdcmatch, xdcattach 285 }; 286 287 288 struct cfattach xd_ca = { 289 sizeof(struct xd_softc), xdmatch, xdattach 290 }; 291 292 extern struct cfdriver xd_cd; 293 294 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 295 int driveno; /* unit number */ 296 int fullmode; /* submit mode */ 297 int booting; /* are we booting or not? */ 298 }; 299 300 /* 301 * dkdriver 302 */ 303 304 struct dkdriver xddkdriver = {xdstrategy}; 305 306 /* 307 * start: disk label fix code (XXX) 308 */ 309 310 static void *xd_labeldata; 311 312 static void 313 xddummystrat(bp) 314 struct buf *bp; 315 { 316 if (bp->b_bcount != XDFM_BPS) 317 panic("xddummystrat"); 318 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 319 bp->b_flags |= B_DONE; 320 bp->b_flags &= ~B_BUSY; 321 } 322 323 int 324 xdgetdisklabel(xd, b) 325 struct xd_softc *xd; 326 void *b; 327 { 328 char *err; 329 #if defined(__sparc__) || defined(__sun3__) 330 struct sun_disklabel *sdl; 331 #endif 332 333 /* We already have the label data in `b'; setup for dummy strategy */ 334 xd_labeldata = b; 335 336 /* Required parameter for readdisklabel() */ 337 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 338 339 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 340 xddummystrat, 341 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 342 if (err) { 343 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 344 return(XD_ERR_FAIL); 345 } 346 347 #if defined(__sparc__) || defined(__sun3__) 348 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 349 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 350 if (sdl->sl_magic == SUN_DKMAGIC) { 351 xd->pcyl = sdl->sl_pcylinders; 352 } else 353 #endif 354 { 355 printf("%s: WARNING: no `pcyl' in disk label.\n", 356 xd->sc_dev.dv_xname); 357 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 358 xd->sc_dk.dk_label->d_acylinders; 359 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 360 xd->sc_dev.dv_xname, xd->pcyl); 361 } 362 363 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 364 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 365 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 366 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 367 xd->sectpercyl = xd->nhead * xd->nsect; 368 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 369 * sun->bsd */ 370 return(XD_ERR_AOK); 371 } 372 373 /* 374 * end: disk label fix code (XXX) 375 */ 376 377 /* 378 * Shorthand for allocating, mapping and loading a DMA buffer 379 */ 380 int 381 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 382 bus_dma_tag_t tag; 383 bus_dmamap_t map; 384 bus_dma_segment_t *seg; 385 int *nsegp; 386 bus_size_t len; 387 caddr_t *kvap; 388 bus_addr_t *dmap; 389 { 390 int nseg; 391 int error; 392 393 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 394 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 395 return (error); 396 } 397 398 if ((error = bus_dmamap_load_raw(tag, map, 399 seg, nseg, len, BUS_DMA_NOWAIT)) != 0) { 400 bus_dmamem_free(tag, seg, nseg); 401 return (error); 402 } 403 404 if ((error = bus_dmamem_map(tag, seg, nseg, 405 len, kvap, 406 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 407 bus_dmamap_unload(tag, map); 408 bus_dmamem_free(tag, seg, nseg); 409 return (error); 410 } 411 412 *dmap = map->dm_segs[0].ds_addr; 413 *nsegp = nseg; 414 return (0); 415 } 416 417 void 418 xd_dmamem_free(tag, map, seg, nseg, len, kva) 419 bus_dma_tag_t tag; 420 bus_dmamap_t map; 421 bus_dma_segment_t *seg; 422 int nseg; 423 bus_size_t len; 424 caddr_t kva; 425 { 426 427 bus_dmamap_unload(tag, map); 428 bus_dmamem_unmap(tag, kva, len); 429 bus_dmamem_free(tag, seg, nseg); 430 } 431 432 433 /* 434 * a u t o c o n f i g f u n c t i o n s 435 */ 436 437 /* 438 * xdcmatch: determine if xdc is present or not. we do a 439 * soft reset to detect the xdc. 440 */ 441 442 int 443 xdc_probe(arg, tag, handle) 444 void *arg; 445 bus_space_tag_t tag; 446 bus_space_handle_t handle; 447 { 448 struct xdc *xdc = (void *)handle; /* XXX */ 449 int del = 0; 450 451 xdc->xdc_csr = XDC_RESET; 452 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 453 return (del > 0 ? 0 : EIO); 454 } 455 456 int xdcmatch(parent, cf, aux) 457 struct device *parent; 458 struct cfdata *cf; 459 void *aux; 460 { 461 struct vme_attach_args *va = aux; 462 vme_chipset_tag_t ct = va->va_vct; 463 vme_am_t mod; 464 int error; 465 466 mod = 0x2d; /* VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 467 if (vme_space_alloc(va->va_vct, va->r[0].offset, sizeof(struct xdc), 468 mod)) 469 return (0); 470 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 471 mod, VME_D32, xdc_probe, 0); 472 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 473 474 return (error == 0); 475 } 476 477 /* 478 * xdcattach: attach controller 479 */ 480 void 481 xdcattach(parent, self, aux) 482 struct device *parent, *self; 483 void *aux; 484 485 { 486 struct vme_attach_args *va = aux; 487 vme_chipset_tag_t ct = va->va_vct; 488 bus_space_tag_t bt; 489 bus_space_handle_t bh; 490 vme_intr_handle_t ih; 491 vme_am_t mod; 492 struct xdc_softc *xdc = (void *) self; 493 struct xdc_attach_args xa; 494 int lcv, rqno, error; 495 struct xd_iopb_ctrl *ctl; 496 bus_dma_segment_t seg; 497 int rseg; 498 vme_mapresc_t resc; 499 500 xdc_md_setup(); 501 502 /* get addressing and intr level stuff from autoconfig and load it 503 * into our xdc_softc. */ 504 505 xdc->dmatag = va->va_bdt; 506 mod = 0x2d; /* VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 507 508 if (vme_space_alloc(va->va_vct, va->r[0].offset, sizeof(struct xdc), 509 mod)) 510 panic("xdc: vme alloc"); 511 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 512 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 513 panic("xdc: vme_map"); 514 515 xdc->xdc = (struct xdc *) bh; /* XXX */ 516 xdc->ipl = va->ilevel; 517 xdc->vector = va->ivector; 518 519 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 520 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 521 522 /* 523 * allocate and zero buffers 524 * 525 * note: we simplify the code by allocating the max number of iopbs and 526 * iorq's up front. thus, we avoid linked lists and the costs 527 * associated with them in exchange for wasting a little memory. 528 */ 529 530 /* Get DMA handle for misc. transfers */ 531 if ((error = bus_dmamap_create( 532 xdc->dmatag, 533 MAXPHYS, 534 1, /* nsegments */ 535 MAXPHYS, 536 0, /* boundary */ 537 BUS_DMA_NOWAIT, 538 &xdc->auxmap)) != 0) { 539 printf("%s: DMA buffer map create error %d\n", 540 xdc->sc_dev.dv_xname, error); 541 return; 542 } 543 544 /* Get DMA handle for mapping iorq descriptors */ 545 if ((error = bus_dmamap_create( 546 xdc->dmatag, 547 XDC_MAXIOPB * sizeof(struct xd_iopb), 548 1, /* nsegments */ 549 XDC_MAXIOPB * sizeof(struct xd_iopb), 550 0, /* boundary */ 551 BUS_DMA_NOWAIT, 552 &xdc->iopmap)) != 0) { 553 printf("%s: DMA buffer map create error %d\n", 554 xdc->sc_dev.dv_xname, error); 555 return; 556 } 557 558 /* Get DMA buffer for iorq descriptors */ 559 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 560 XDC_MAXIOPB * sizeof(struct xd_iopb), 561 (caddr_t *)&xdc->iopbase, 562 (bus_addr_t *)&xdc->dvmaiopb)) != 0) { 563 printf("%s: DMA buffer alloc error %d\n", 564 xdc->sc_dev.dv_xname, error); 565 return; 566 } 567 568 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 569 570 xdc->reqs = (struct xd_iorq *) 571 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 572 if (xdc->reqs == NULL) 573 panic("xdc malloc"); 574 bzero(xdc->reqs, XDC_MAXIOPB * sizeof(struct xd_iorq)); 575 576 /* init free list, iorq to iopb pointers, and non-zero fields in the 577 * iopb which never change. */ 578 579 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 580 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 581 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 582 xdc->freereq[lcv] = lcv; 583 xdc->iopbase[lcv].fixd = 1; /* always the same */ 584 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 585 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 586 587 error = bus_dmamap_create( 588 xdc->dmatag, 589 MAXPHYS, /* size */ 590 1, /* nsegments */ 591 MAXPHYS, /* maxsegsz */ 592 0, /* boundary */ 593 BUS_DMA_NOWAIT, 594 &xdc->reqs[lcv].dmamap); 595 if (error) { 596 printf("%s: DMA buffer map create error %d\n", 597 xdc->sc_dev.dv_xname, error); 598 return; 599 } 600 } 601 xdc->nfree = XDC_MAXIOPB; 602 xdc->nrun = 0; 603 xdc->waithead = xdc->waitend = xdc->nwait = 0; 604 xdc->ndone = 0; 605 606 /* init queue of waiting bufs */ 607 608 BUFQ_INIT(&xdc->sc_wq); 609 callout_init(&xdc->sc_tick_ch); 610 611 /* 612 * section 7 of the manual tells us how to init the controller: 613 * - read controller parameters (6/0) 614 * - write controller parameters (5/0) 615 */ 616 617 /* read controller parameters and insure we have a 753/7053 */ 618 619 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 620 if (rqno == XD_ERR_FAIL) { 621 printf(": couldn't read controller params\n"); 622 return; /* shouldn't ever happen */ 623 } 624 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 625 if (ctl->ctype != XDCT_753) { 626 if (xdc->reqs[rqno].errno) 627 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 628 printf(": doesn't identify as a 753/7053\n"); 629 XDC_DONE(xdc, rqno, error); 630 return; 631 } 632 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 633 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 634 XDC_DONE(xdc, rqno, error); 635 636 /* now write controller parameters (xdc_cmd sets all params for us) */ 637 638 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 639 XDC_DONE(xdc, rqno, error); 640 if (error) { 641 printf("%s: controller config error: %s\n", 642 xdc->sc_dev.dv_xname, xdc_e2str(error)); 643 return; 644 } 645 646 /* link in interrupt with higher level software */ 647 vme_intr_map(ct, va->ivector, va->ilevel, &ih); 648 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 649 evcnt_attach(&xdc->sc_dev, "intr", &xdc->sc_intrcnt); 650 651 652 /* now we must look for disks using autoconfig */ 653 xa.fullmode = XD_SUB_POLL; 654 xa.booting = 1; 655 656 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 657 (void) config_found(self, (void *) &xa, NULL); 658 659 /* start the watchdog clock */ 660 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 661 662 } 663 664 /* 665 * xdmatch: probe for disk. 666 * 667 * note: we almost always say disk is present. this allows us to 668 * spin up and configure a disk after the system is booted (we can 669 * call xdattach!). 670 */ 671 int 672 xdmatch(parent, cf, aux) 673 struct device *parent; 674 struct cfdata *cf; 675 void *aux; 676 { 677 struct xdc_attach_args *xa = aux; 678 679 /* looking for autoconf wildcard or exact match */ 680 681 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 682 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 683 return 0; 684 685 return 1; 686 687 } 688 689 /* 690 * xdattach: attach a disk. this can be called from autoconf and also 691 * from xdopen/xdstrategy. 692 */ 693 void 694 xdattach(parent, self, aux) 695 struct device *parent, *self; 696 void *aux; 697 698 { 699 struct xd_softc *xd = (void *) self; 700 struct xdc_softc *xdc = (void *) parent; 701 struct xdc_attach_args *xa = aux; 702 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 703 struct xd_iopb_drive *driopb; 704 struct dkbad *dkb; 705 int rseg, error; 706 bus_dma_segment_t seg; 707 caddr_t dmaddr; 708 caddr_t buf; 709 710 /* 711 * Always re-initialize the disk structure. We want statistics 712 * to start with a clean slate. 713 */ 714 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 715 xd->sc_dk.dk_driver = &xddkdriver; 716 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 717 718 /* if booting, init the xd_softc */ 719 720 if (xa->booting) { 721 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 722 xd->flags = 0; 723 xd->parent = xdc; 724 } 725 xd->xd_drive = xa->driveno; 726 fmode = xa->fullmode; 727 xdc->sc_drives[xa->driveno] = xd; 728 729 /* if not booting, make sure we are the only process in the attach for 730 * this drive. if locked out, sleep on it. */ 731 732 if (!xa->booting) { 733 s = splbio(); 734 while (xd->state == XD_DRIVE_ATTACHING) { 735 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 736 splx(s); 737 return; 738 } 739 } 740 printf("%s at %s", 741 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 742 } 743 744 /* we now have control */ 745 xd->state = XD_DRIVE_ATTACHING; 746 newstate = XD_DRIVE_UNKNOWN; 747 748 buf = NULL; 749 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 750 XDFM_BPS, 751 (caddr_t *)&buf, 752 (bus_addr_t *)&dmaddr)) != 0) { 753 printf("%s: DMA buffer alloc error %d\n", 754 xdc->sc_dev.dv_xname, error); 755 return; 756 } 757 758 /* first try and reset the drive */ 759 760 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 761 XDC_DONE(xdc, rqno, error); 762 if (error == XD_ERR_NRDY) { 763 printf(" drive %d: off-line\n", xa->driveno); 764 goto done; 765 } 766 if (error) { 767 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 768 goto done; 769 } 770 printf(" drive %d: ready\n", xa->driveno); 771 772 /* now set format parameters */ 773 774 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 775 XDC_DONE(xdc, rqno, error); 776 if (error) { 777 printf("%s: write format parameters failed: %s\n", 778 xd->sc_dev.dv_xname, xdc_e2str(error)); 779 goto done; 780 } 781 782 /* get drive parameters */ 783 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 784 if (rqno != XD_ERR_FAIL) { 785 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 786 spt = driopb->sectpertrk; 787 } 788 XDC_DONE(xdc, rqno, error); 789 if (error) { 790 printf("%s: read drive parameters failed: %s\n", 791 xd->sc_dev.dv_xname, xdc_e2str(error)); 792 goto done; 793 } 794 795 /* 796 * now set drive parameters (to semi-bogus values) so we can read the 797 * disk label. 798 */ 799 xd->pcyl = xd->ncyl = 1; 800 xd->acyl = 0; 801 xd->nhead = 1; 802 xd->nsect = 1; 803 xd->sectpercyl = 1; 804 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 805 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 806 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 807 XDC_DONE(xdc, rqno, error); 808 if (error) { 809 printf("%s: write drive parameters failed: %s\n", 810 xd->sc_dev.dv_xname, xdc_e2str(error)); 811 goto done; 812 } 813 814 /* read disk label */ 815 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 816 XDC_DONE(xdc, rqno, error); 817 if (error) { 818 printf("%s: reading disk label failed: %s\n", 819 xd->sc_dev.dv_xname, xdc_e2str(error)); 820 goto done; 821 } 822 newstate = XD_DRIVE_NOLABEL; 823 824 xd->hw_spt = spt; 825 /* Attach the disk: must be before getdisklabel to malloc label */ 826 disk_attach(&xd->sc_dk); 827 828 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 829 goto done; 830 831 /* inform the user of what is up */ 832 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 833 buf, xd->pcyl, spt); 834 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 835 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 836 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 837 XDFM_BPS); 838 839 /* now set the real drive parameters! */ 840 841 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 842 XDC_DONE(xdc, rqno, error); 843 if (error) { 844 printf("%s: write real drive parameters failed: %s\n", 845 xd->sc_dev.dv_xname, xdc_e2str(error)); 846 goto done; 847 } 848 newstate = XD_DRIVE_ONLINE; 849 850 /* 851 * read bad144 table. this table resides on the first sector of the 852 * last track of the disk (i.e. second cyl of "acyl" area). 853 */ 854 855 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 856 (xd->nhead - 1) * xd->nsect; /* last head */ 857 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 858 XDC_DONE(xdc, rqno, error); 859 if (error) { 860 printf("%s: reading bad144 failed: %s\n", 861 xd->sc_dev.dv_xname, xdc_e2str(error)); 862 goto done; 863 } 864 865 /* check dkbad for sanity */ 866 dkb = (struct dkbad *) buf; 867 for (lcv = 0; lcv < 126; lcv++) { 868 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 869 dkb->bt_bad[lcv].bt_cyl == 0) && 870 dkb->bt_bad[lcv].bt_trksec == 0xffff) 871 continue; /* blank */ 872 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 873 break; 874 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 875 break; 876 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 877 break; 878 } 879 if (lcv != 126) { 880 printf("%s: warning: invalid bad144 sector!\n", 881 xd->sc_dev.dv_xname); 882 } else { 883 bcopy(buf, &xd->dkb, XDFM_BPS); 884 } 885 886 done: 887 if (buf != NULL) { 888 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 889 &seg, rseg, XDFM_BPS, buf); 890 } 891 892 xd->state = newstate; 893 if (!xa->booting) { 894 wakeup(&xd->state); 895 splx(s); 896 } 897 } 898 899 /* 900 * end of autoconfig functions 901 */ 902 903 /* 904 * { b , c } d e v s w f u n c t i o n s 905 */ 906 907 /* 908 * xdclose: close device 909 */ 910 int 911 xdclose(dev, flag, fmt, p) 912 dev_t dev; 913 int flag, fmt; 914 struct proc *p; 915 { 916 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 917 int part = DISKPART(dev); 918 919 /* clear mask bits */ 920 921 switch (fmt) { 922 case S_IFCHR: 923 xd->sc_dk.dk_copenmask &= ~(1 << part); 924 break; 925 case S_IFBLK: 926 xd->sc_dk.dk_bopenmask &= ~(1 << part); 927 break; 928 } 929 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 930 931 return 0; 932 } 933 934 /* 935 * xddump: crash dump system 936 */ 937 int 938 xddump(dev, blkno, va, size) 939 dev_t dev; 940 daddr_t blkno; 941 caddr_t va; 942 size_t size; 943 { 944 int unit, part; 945 struct xd_softc *xd; 946 947 unit = DISKUNIT(dev); 948 if (unit >= xd_cd.cd_ndevs) 949 return ENXIO; 950 part = DISKPART(dev); 951 952 xd = xd_cd.cd_devs[unit]; 953 954 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 955 'a' + part); 956 957 return ENXIO; 958 959 /* outline: globals: "dumplo" == sector number of partition to start 960 * dump at (convert to physical sector with partition table) 961 * "dumpsize" == size of dump in clicks "physmem" == size of physical 962 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 963 * physmem) 964 * 965 * dump a copy of physical memory to the dump device starting at sector 966 * "dumplo" in the swap partition (make sure > 0). map in pages as 967 * we go. use polled I/O. 968 * 969 * XXX how to handle NON_CONTIG? */ 970 971 } 972 973 /* 974 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 975 */ 976 int 977 xdioctl(dev, command, addr, flag, p) 978 dev_t dev; 979 u_long command; 980 caddr_t addr; 981 int flag; 982 struct proc *p; 983 984 { 985 struct xd_softc *xd; 986 struct xd_iocmd *xio; 987 int error, s, unit; 988 989 unit = DISKUNIT(dev); 990 991 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 992 return (ENXIO); 993 994 /* switch on ioctl type */ 995 996 switch (command) { 997 case DIOCSBAD: /* set bad144 info */ 998 if ((flag & FWRITE) == 0) 999 return EBADF; 1000 s = splbio(); 1001 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1002 splx(s); 1003 return 0; 1004 1005 case DIOCGDINFO: /* get disk label */ 1006 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1007 return 0; 1008 1009 case DIOCGPART: /* get partition info */ 1010 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1011 ((struct partinfo *) addr)->part = 1012 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1013 return 0; 1014 1015 case DIOCSDINFO: /* set disk label */ 1016 if ((flag & FWRITE) == 0) 1017 return EBADF; 1018 error = setdisklabel(xd->sc_dk.dk_label, 1019 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 1020 xd->sc_dk.dk_cpulabel); 1021 if (error == 0) { 1022 if (xd->state == XD_DRIVE_NOLABEL) 1023 xd->state = XD_DRIVE_ONLINE; 1024 } 1025 return error; 1026 1027 case DIOCWLABEL: /* change write status of disk label */ 1028 if ((flag & FWRITE) == 0) 1029 return EBADF; 1030 if (*(int *) addr) 1031 xd->flags |= XD_WLABEL; 1032 else 1033 xd->flags &= ~XD_WLABEL; 1034 return 0; 1035 1036 case DIOCWDINFO: /* write disk label */ 1037 if ((flag & FWRITE) == 0) 1038 return EBADF; 1039 error = setdisklabel(xd->sc_dk.dk_label, 1040 (struct disklabel *) addr, /* xd->sc_dk.dk_openmask : */ 0, 1041 xd->sc_dk.dk_cpulabel); 1042 if (error == 0) { 1043 if (xd->state == XD_DRIVE_NOLABEL) 1044 xd->state = XD_DRIVE_ONLINE; 1045 1046 /* Simulate opening partition 0 so write succeeds. */ 1047 xd->sc_dk.dk_openmask |= (1 << 0); 1048 error = writedisklabel(MAKEDISKDEV(major(dev), DISKUNIT(dev), RAW_PART), 1049 xdstrategy, xd->sc_dk.dk_label, 1050 xd->sc_dk.dk_cpulabel); 1051 xd->sc_dk.dk_openmask = 1052 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1053 } 1054 return error; 1055 1056 case DIOSXDCMD: 1057 xio = (struct xd_iocmd *) addr; 1058 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1059 return (error); 1060 return (xdc_ioctlcmd(xd, dev, xio)); 1061 1062 default: 1063 return ENOTTY; 1064 } 1065 } 1066 /* 1067 * xdopen: open drive 1068 */ 1069 1070 int 1071 xdopen(dev, flag, fmt, p) 1072 dev_t dev; 1073 int flag, fmt; 1074 struct proc *p; 1075 { 1076 int unit, part; 1077 struct xd_softc *xd; 1078 struct xdc_attach_args xa; 1079 1080 /* first, could it be a valid target? */ 1081 1082 unit = DISKUNIT(dev); 1083 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1084 return (ENXIO); 1085 part = DISKPART(dev); 1086 1087 /* do we need to attach the drive? */ 1088 1089 if (xd->state == XD_DRIVE_UNKNOWN) { 1090 xa.driveno = xd->xd_drive; 1091 xa.fullmode = XD_SUB_WAIT; 1092 xa.booting = 0; 1093 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1094 if (xd->state == XD_DRIVE_UNKNOWN) { 1095 return (EIO); 1096 } 1097 } 1098 /* check for partition */ 1099 1100 if (part != RAW_PART && 1101 (part >= xd->sc_dk.dk_label->d_npartitions || 1102 xd->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 xd->sc_dk.dk_copenmask |= (1 << part); 1110 break; 1111 case S_IFBLK: 1112 xd->sc_dk.dk_bopenmask |= (1 << part); 1113 break; 1114 } 1115 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1116 1117 return 0; 1118 } 1119 1120 int 1121 xdread(dev, uio, flags) 1122 dev_t dev; 1123 struct uio *uio; 1124 int flags; 1125 { 1126 1127 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1128 } 1129 1130 int 1131 xdwrite(dev, uio, flags) 1132 dev_t dev; 1133 struct uio *uio; 1134 int flags; 1135 { 1136 1137 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1138 } 1139 1140 1141 /* 1142 * xdsize: return size of a partition for a dump 1143 */ 1144 1145 int 1146 xdsize(dev) 1147 dev_t dev; 1148 1149 { 1150 struct xd_softc *xdsc; 1151 int unit, part, size, omask; 1152 1153 /* valid unit? */ 1154 unit = DISKUNIT(dev); 1155 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1156 return (-1); 1157 1158 part = DISKPART(dev); 1159 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1160 1161 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1162 return (-1); 1163 1164 /* do it */ 1165 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1166 size = -1; /* only give valid size for swap partitions */ 1167 else 1168 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1169 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1170 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1171 return (-1); 1172 return (size); 1173 } 1174 /* 1175 * xdstrategy: buffering system interface to xd. 1176 */ 1177 1178 void 1179 xdstrategy(bp) 1180 struct buf *bp; 1181 1182 { 1183 struct xd_softc *xd; 1184 struct xdc_softc *parent; 1185 int s, unit; 1186 struct xdc_attach_args xa; 1187 1188 unit = DISKUNIT(bp->b_dev); 1189 1190 /* check for live device */ 1191 1192 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1193 bp->b_blkno < 0 || 1194 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1195 bp->b_error = EINVAL; 1196 goto bad; 1197 } 1198 /* do we need to attach the drive? */ 1199 1200 if (xd->state == XD_DRIVE_UNKNOWN) { 1201 xa.driveno = xd->xd_drive; 1202 xa.fullmode = XD_SUB_WAIT; 1203 xa.booting = 0; 1204 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1205 if (xd->state == XD_DRIVE_UNKNOWN) { 1206 bp->b_error = EIO; 1207 goto bad; 1208 } 1209 } 1210 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1211 /* no I/O to unlabeled disks, unless raw partition */ 1212 bp->b_error = EIO; 1213 goto bad; 1214 } 1215 /* short circuit zero length request */ 1216 1217 if (bp->b_bcount == 0) 1218 goto done; 1219 1220 /* check bounds with label (disksubr.c). Determine the size of the 1221 * transfer, and make sure it is within the boundaries of the 1222 * partition. Adjust transfer if needed, and signal errors or early 1223 * completion. */ 1224 1225 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1226 (xd->flags & XD_WLABEL) != 0) <= 0) 1227 goto done; 1228 1229 /* 1230 * now we know we have a valid buf structure that we need to do I/O 1231 * on. 1232 * 1233 * note that we don't disksort because the controller has a sorting 1234 * algorithm built into the hardware. 1235 */ 1236 1237 s = splbio(); /* protect the queues */ 1238 1239 /* first, give jobs in front of us a chance */ 1240 parent = xd->parent; 1241 while (parent->nfree > 0 && BUFQ_FIRST(&parent->sc_wq) != NULL) 1242 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1243 break; 1244 1245 /* if there are no free iorq's, then we just queue and return. the 1246 * buffs will get picked up later by xdcintr(). 1247 */ 1248 1249 if (parent->nfree == 0) { 1250 BUFQ_INSERT_TAIL(&parent->sc_wq, bp); 1251 splx(s); 1252 return; 1253 } 1254 1255 /* now we have free iopb's and we are at splbio... start 'em up */ 1256 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1257 return; 1258 } 1259 1260 /* done! */ 1261 1262 splx(s); 1263 return; 1264 1265 bad: /* tells upper layers we have an error */ 1266 bp->b_flags |= B_ERROR; 1267 done: /* tells upper layers we are done with this 1268 * buf */ 1269 bp->b_resid = bp->b_bcount; 1270 biodone(bp); 1271 } 1272 /* 1273 * end of {b,c}devsw functions 1274 */ 1275 1276 /* 1277 * i n t e r r u p t f u n c t i o n 1278 * 1279 * xdcintr: hardware interrupt. 1280 */ 1281 int 1282 xdcintr(v) 1283 void *v; 1284 1285 { 1286 struct xdc_softc *xdcsc = v; 1287 1288 /* kick the event counter */ 1289 1290 xdcsc->sc_intrcnt.ev_count++; 1291 1292 /* remove as many done IOPBs as possible */ 1293 1294 xdc_remove_iorq(xdcsc); 1295 1296 /* start any iorq's already waiting */ 1297 1298 xdc_start(xdcsc, XDC_MAXIOPB); 1299 1300 /* fill up any remaining iorq's with queue'd buffers */ 1301 1302 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1303 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1304 break; 1305 1306 return (1); 1307 } 1308 /* 1309 * end of interrupt function 1310 */ 1311 1312 /* 1313 * i n t e r n a l f u n c t i o n s 1314 */ 1315 1316 /* 1317 * xdc_rqinit: fill out the fields of an I/O request 1318 */ 1319 1320 inline void 1321 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1322 struct xd_iorq *rq; 1323 struct xdc_softc *xdc; 1324 struct xd_softc *xd; 1325 int md; 1326 u_long blk; 1327 int cnt; 1328 caddr_t db; 1329 struct buf *bp; 1330 { 1331 rq->xdc = xdc; 1332 rq->xd = xd; 1333 rq->ttl = XDC_MAXTTL + 10; 1334 rq->mode = md; 1335 rq->tries = rq->errno = rq->lasterror = 0; 1336 rq->blockno = blk; 1337 rq->sectcnt = cnt; 1338 rq->dbuf = db; 1339 rq->buf = bp; 1340 } 1341 /* 1342 * xdc_rqtopb: load up an IOPB based on an iorq 1343 */ 1344 1345 void 1346 xdc_rqtopb(iorq, iopb, cmd, subfun) 1347 struct xd_iorq *iorq; 1348 struct xd_iopb *iopb; 1349 int cmd, subfun; 1350 1351 { 1352 u_long block, dp; 1353 1354 /* standard stuff */ 1355 1356 iopb->errs = iopb->done = 0; 1357 iopb->comm = cmd; 1358 iopb->errno = iopb->status = 0; 1359 iopb->subfun = subfun; 1360 if (iorq->xd) 1361 iopb->unit = iorq->xd->xd_drive; 1362 else 1363 iopb->unit = 0; 1364 1365 /* check for alternate IOPB format */ 1366 1367 if (cmd == XDCMD_WRP) { 1368 switch (subfun) { 1369 case XDFUN_CTL:{ 1370 struct xd_iopb_ctrl *ctrl = 1371 (struct xd_iopb_ctrl *) iopb; 1372 iopb->lll = 0; 1373 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1374 ? 0 1375 : iorq->xdc->ipl; 1376 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1377 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1378 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1379 XDPC_RBC | XDPC_ECC2; 1380 ctrl->throttle = XDC_THROTTLE; 1381 ctrl->delay = XDC_DELAY; 1382 break; 1383 } 1384 case XDFUN_DRV:{ 1385 struct xd_iopb_drive *drv = 1386 (struct xd_iopb_drive *)iopb; 1387 /* we assume that the disk label has the right 1388 * info */ 1389 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1390 drv->dparam_ipl = (XDC_DPARAM << 3); 1391 else 1392 drv->dparam_ipl = (XDC_DPARAM << 3) | 1393 iorq->xdc->ipl; 1394 drv->maxsect = iorq->xd->nsect - 1; 1395 drv->maxsector = drv->maxsect; 1396 /* note: maxsector != maxsect only if you are 1397 * doing cyl sparing */ 1398 drv->headoff = 0; 1399 drv->maxcyl = iorq->xd->pcyl - 1; 1400 drv->maxhead = iorq->xd->nhead - 1; 1401 break; 1402 } 1403 case XDFUN_FMT:{ 1404 struct xd_iopb_format *form = 1405 (struct xd_iopb_format *) iopb; 1406 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1407 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1408 else 1409 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1410 iorq->xdc->ipl; 1411 form->field1 = XDFM_FIELD1; 1412 form->field2 = XDFM_FIELD2; 1413 form->field3 = XDFM_FIELD3; 1414 form->field4 = XDFM_FIELD4; 1415 form->bytespersec = XDFM_BPS; 1416 form->field6 = XDFM_FIELD6; 1417 form->field7 = XDFM_FIELD7; 1418 break; 1419 } 1420 } 1421 } else { 1422 1423 /* normal IOPB case (harmless to RDP command) */ 1424 1425 iopb->lll = 0; 1426 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1427 ? 0 1428 : iorq->xdc->ipl; 1429 iopb->sectcnt = iorq->sectcnt; 1430 block = iorq->blockno; 1431 if (iorq->xd == NULL || block == 0) { 1432 iopb->sectno = iopb->headno = iopb->cylno = 0; 1433 } else { 1434 iopb->sectno = block % iorq->xd->nsect; 1435 block = block / iorq->xd->nsect; 1436 iopb->headno = block % iorq->xd->nhead; 1437 block = block / iorq->xd->nhead; 1438 iopb->cylno = block; 1439 } 1440 dp = (u_long) iorq->dbuf; 1441 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1442 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1443 ? XDC_ADDRMOD32 1444 : XDC_ADDRMOD; 1445 } 1446 } 1447 1448 /* 1449 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1450 * If you've already got an IORQ, you can call submit directly (currently 1451 * there is no need to do this). NORM requests are handled seperately. 1452 */ 1453 int 1454 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1455 struct xdc_softc *xdcsc; 1456 int cmd, subfn, unit, block, scnt; 1457 char *dptr; 1458 int fullmode; 1459 1460 { 1461 int rqno, submode = XD_STATE(fullmode), retry; 1462 struct xd_iorq *iorq; 1463 struct xd_iopb *iopb; 1464 1465 /* get iorq/iopb */ 1466 switch (submode) { 1467 case XD_SUB_POLL: 1468 while (xdcsc->nfree == 0) { 1469 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1470 return (XD_ERR_FAIL); 1471 } 1472 break; 1473 case XD_SUB_WAIT: 1474 retry = 1; 1475 while (retry) { 1476 while (xdcsc->nfree == 0) { 1477 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1478 return (XD_ERR_FAIL); 1479 } 1480 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1481 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1482 return (XD_ERR_FAIL); 1483 } 1484 if (xdcsc->nfree) 1485 retry = 0; /* got it */ 1486 } 1487 break; 1488 default: 1489 return (XD_ERR_FAIL); /* illegal */ 1490 } 1491 if (xdcsc->nfree == 0) 1492 panic("xdcmd nfree"); 1493 rqno = XDC_RQALLOC(xdcsc); 1494 iorq = &xdcsc->reqs[rqno]; 1495 iopb = iorq->iopb; 1496 1497 1498 /* init iorq/iopb */ 1499 1500 xdc_rqinit(iorq, xdcsc, 1501 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1502 fullmode, block, scnt, dptr, NULL); 1503 1504 /* load IOPB from iorq */ 1505 1506 xdc_rqtopb(iorq, iopb, cmd, subfn); 1507 1508 /* submit it for processing */ 1509 1510 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1511 1512 return (rqno); 1513 } 1514 /* 1515 * xdc_startbuf 1516 * start a buffer running, assumes nfree > 0 1517 */ 1518 1519 int 1520 xdc_startbuf(xdcsc, xdsc, bp) 1521 struct xdc_softc *xdcsc; 1522 struct xd_softc *xdsc; 1523 struct buf *bp; 1524 1525 { 1526 int rqno, partno; 1527 struct xd_iorq *iorq; 1528 struct xd_iopb *iopb; 1529 u_long block; 1530 /* caddr_t dbuf;*/ 1531 int error; 1532 1533 if (!xdcsc->nfree) 1534 panic("xdc_startbuf free"); 1535 rqno = XDC_RQALLOC(xdcsc); 1536 iorq = &xdcsc->reqs[rqno]; 1537 iopb = iorq->iopb; 1538 1539 /* get buf */ 1540 1541 if (bp == NULL) { 1542 bp = BUFQ_FIRST(&xdcsc->sc_wq); 1543 if (bp == NULL) 1544 panic("xdc_startbuf bp"); 1545 BUFQ_REMOVE(&xdcsc->sc_wq, bp); 1546 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1547 } 1548 partno = DISKPART(bp->b_dev); 1549 #ifdef XDC_DEBUG 1550 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1551 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1552 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1553 bp->b_bcount, bp->b_data); 1554 #endif 1555 1556 /* 1557 * load request. we have to calculate the correct block number based 1558 * on partition info. 1559 * 1560 * note that iorq points to the buffer as mapped into DVMA space, 1561 * where as the bp->b_data points to its non-DVMA mapping. 1562 */ 1563 1564 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1565 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1566 1567 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1568 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1569 if (error != 0) { 1570 printf("%s: warning: cannot load DMA map\n", 1571 xdcsc->sc_dev.dv_xname); 1572 XDC_FREE(xdcsc, rqno); 1573 BUFQ_INSERT_TAIL(&xdcsc->sc_wq, bp); 1574 return (XD_ERR_FAIL); /* XXX: need some sort of 1575 * call-back scheme here? */ 1576 } 1577 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1578 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1579 ? BUS_DMASYNC_PREREAD 1580 : BUS_DMASYNC_PREWRITE); 1581 1582 /* init iorq and load iopb from it */ 1583 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1584 bp->b_bcount / XDFM_BPS, 1585 (caddr_t)iorq->dmamap->dm_segs[0].ds_addr, 1586 bp); 1587 1588 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1589 1590 /* Instrumentation. */ 1591 disk_busy(&xdsc->sc_dk); 1592 1593 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1594 1595 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1596 return (XD_ERR_AOK); 1597 } 1598 1599 1600 /* 1601 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1602 * if ok. if it fail returns an error code. type is XD_SUB_*. 1603 * 1604 * note: caller frees iorq in all cases except NORM 1605 * 1606 * return value: 1607 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1608 * WAIT: XD_AOK (success), <error-code> (failed) 1609 * POLL: <same as WAIT> 1610 * NOQ : <same as NORM> 1611 * 1612 * there are three sources for i/o requests: 1613 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1614 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1615 * [3] open/ioctl: these are I/O requests done in the context of a process, 1616 * and the process should block until they are done. 1617 * 1618 * software state is stored in the iorq structure. each iorq has an 1619 * iopb structure. the hardware understands the iopb structure. 1620 * every command must go through an iopb. a 7053 can only handle 1621 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1622 * DVMA space at boot up time. what happens if we run out of iopb's? 1623 * for i/o type [1], the buffers are queued at the "buff" layer and 1624 * picked up later by the interrupt routine. for case [2] the 1625 * programmed i/o driver is called with a special flag that says 1626 * return when one iopb is free. for case [3] the process can sleep 1627 * on the iorq free list until some iopbs are avaliable. 1628 */ 1629 1630 1631 int 1632 xdc_submit_iorq(xdcsc, iorqno, type) 1633 struct xdc_softc *xdcsc; 1634 int iorqno; 1635 int type; 1636 1637 { 1638 u_long iopbaddr; 1639 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1640 1641 #ifdef XDC_DEBUG 1642 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1643 iorqno, type); 1644 #endif 1645 1646 /* first check and see if controller is busy */ 1647 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1648 #ifdef XDC_DEBUG 1649 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1650 #endif 1651 if (type == XD_SUB_NOQ) 1652 return (XD_ERR_FAIL); /* failed */ 1653 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1654 switch (type) { 1655 case XD_SUB_NORM: 1656 return XD_ERR_AOK; /* success */ 1657 case XD_SUB_WAIT: 1658 while (iorq->iopb->done == 0) { 1659 sleep(iorq, PRIBIO); 1660 } 1661 return (iorq->errno); 1662 case XD_SUB_POLL: 1663 return (xdc_piodriver(xdcsc, iorqno, 0)); 1664 default: 1665 panic("xdc_submit_iorq adding"); 1666 } 1667 } 1668 #ifdef XDC_DEBUG 1669 { 1670 u_char *rio = (u_char *) iorq->iopb; 1671 int sz = sizeof(struct xd_iopb), lcv; 1672 printf("%s: aio #%d [", 1673 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1674 for (lcv = 0; lcv < sz; lcv++) 1675 printf(" %02x", rio[lcv]); 1676 printf("]\n"); 1677 } 1678 #endif /* XDC_DEBUG */ 1679 1680 /* controller not busy, start command */ 1681 iopbaddr = (u_long) iorq->dmaiopb; 1682 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1683 xdcsc->nrun++; 1684 /* command now running, wrap it up */ 1685 switch (type) { 1686 case XD_SUB_NORM: 1687 case XD_SUB_NOQ: 1688 return (XD_ERR_AOK); /* success */ 1689 case XD_SUB_WAIT: 1690 while (iorq->iopb->done == 0) { 1691 sleep(iorq, PRIBIO); 1692 } 1693 return (iorq->errno); 1694 case XD_SUB_POLL: 1695 return (xdc_piodriver(xdcsc, iorqno, 0)); 1696 default: 1697 panic("xdc_submit_iorq wrap up"); 1698 } 1699 panic("xdc_submit_iorq"); 1700 return 0; /* not reached */ 1701 } 1702 1703 1704 /* 1705 * xdc_piodriver 1706 * 1707 * programmed i/o driver. this function takes over the computer 1708 * and drains off all i/o requests. it returns the status of the iorq 1709 * the caller is interesting in. if freeone is true, then it returns 1710 * when there is a free iorq. 1711 */ 1712 int 1713 xdc_piodriver(xdcsc, iorqno, freeone) 1714 struct xdc_softc *xdcsc; 1715 int iorqno; 1716 int freeone; 1717 1718 { 1719 int nreset = 0; 1720 int retval = 0; 1721 u_long count; 1722 struct xdc *xdc = xdcsc->xdc; 1723 #ifdef XDC_DEBUG 1724 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1725 iorqno, freeone); 1726 #endif 1727 1728 while (xdcsc->nwait || xdcsc->nrun) { 1729 #ifdef XDC_DEBUG 1730 printf("xdc_piodriver: wait=%d, run=%d\n", 1731 xdcsc->nwait, xdcsc->nrun); 1732 #endif 1733 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1734 #ifdef XDC_DEBUG 1735 printf("xdc_piodriver: done wait with count = %d\n", count); 1736 #endif 1737 /* we expect some progress soon */ 1738 if (count == 0 && nreset >= 2) { 1739 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1740 #ifdef XDC_DEBUG 1741 printf("xdc_piodriver: timeout\n"); 1742 #endif 1743 return (XD_ERR_FAIL); 1744 } 1745 if (count == 0) { 1746 if (xdc_reset(xdcsc, 0, 1747 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1748 XD_ERR_FAIL, 1749 0) == XD_ERR_FAIL) 1750 return (XD_ERR_FAIL); /* flushes all but POLL 1751 * requests, resets */ 1752 continue; 1753 } 1754 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1755 if (freeone) { 1756 if (xdcsc->nrun < XDC_MAXIOPB) { 1757 #ifdef XDC_DEBUG 1758 printf("xdc_piodriver: done: one free\n"); 1759 #endif 1760 return (XD_ERR_AOK); 1761 } 1762 continue; /* don't xdc_start */ 1763 } 1764 xdc_start(xdcsc, XDC_MAXIOPB); 1765 } 1766 1767 /* get return value */ 1768 1769 retval = xdcsc->reqs[iorqno].errno; 1770 1771 #ifdef XDC_DEBUG 1772 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1773 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1774 #endif 1775 1776 /* now that we've drained everything, start up any bufs that have 1777 * queued */ 1778 1779 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1780 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1781 break; 1782 1783 return (retval); 1784 } 1785 1786 /* 1787 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1788 * we steal iopb[0] for this, but we put it back when we are done. 1789 */ 1790 void 1791 xdc_xdreset(xdcsc, xdsc) 1792 struct xdc_softc *xdcsc; 1793 struct xd_softc *xdsc; 1794 1795 { 1796 struct xd_iopb tmpiopb; 1797 u_long addr; 1798 int del; 1799 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1800 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1801 xdcsc->iopbase->comm = XDCMD_RST; 1802 xdcsc->iopbase->unit = xdsc->xd_drive; 1803 addr = (u_long) xdcsc->dvmaiopb; 1804 XDC_GO(xdcsc->xdc, addr); /* go! */ 1805 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1806 if (del <= 0 || xdcsc->iopbase->errs) { 1807 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1808 xdc_e2str(xdcsc->iopbase->errno)); 1809 xdcsc->xdc->xdc_csr = XDC_RESET; 1810 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1811 if (del <= 0) 1812 panic("xdc_reset"); 1813 } else { 1814 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1815 } 1816 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1817 } 1818 1819 1820 /* 1821 * xdc_reset: reset everything: requests are marked as errors except 1822 * a polled request (which is resubmitted) 1823 */ 1824 int 1825 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1826 struct xdc_softc *xdcsc; 1827 int quiet, blastmode, error; 1828 struct xd_softc *xdsc; 1829 1830 { 1831 int del = 0, lcv, retval = XD_ERR_AOK; 1832 int oldfree = xdcsc->nfree; 1833 1834 /* soft reset hardware */ 1835 1836 if (!quiet) 1837 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1838 xdcsc->xdc->xdc_csr = XDC_RESET; 1839 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1840 if (del <= 0) { 1841 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1842 retval = XD_ERR_FAIL; 1843 } 1844 if (xdsc) 1845 xdc_xdreset(xdcsc, xdsc); 1846 1847 /* fix queues based on "blast-mode" */ 1848 1849 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1850 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1851 1852 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1853 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1854 XD_STATE(iorq->mode) != XD_SUB_NORM) 1855 /* is it active? */ 1856 continue; 1857 1858 xdcsc->nrun--; /* it isn't running any more */ 1859 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1860 /* failed */ 1861 iorq->errno = error; 1862 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1863 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1864 case XD_SUB_NORM: 1865 iorq->buf->b_error = EIO; 1866 iorq->buf->b_flags |= B_ERROR; 1867 iorq->buf->b_resid = 1868 iorq->sectcnt * XDFM_BPS; 1869 1870 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1871 iorq->dmamap->dm_mapsize, 1872 (iorq->buf->b_flags & B_READ) 1873 ? BUS_DMASYNC_POSTREAD 1874 : BUS_DMASYNC_POSTWRITE); 1875 1876 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1877 1878 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1879 (xdcsc->reqs[lcv].buf->b_bcount - 1880 xdcsc->reqs[lcv].buf->b_resid)); 1881 biodone(iorq->buf); 1882 XDC_FREE(xdcsc, lcv); /* add to free list */ 1883 break; 1884 case XD_SUB_WAIT: 1885 wakeup(iorq); 1886 case XD_SUB_POLL: 1887 xdcsc->ndone++; 1888 iorq->mode = 1889 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1890 break; 1891 } 1892 1893 } else { 1894 1895 /* resubmit, put at front of wait queue */ 1896 XDC_HWAIT(xdcsc, lcv); 1897 } 1898 } 1899 1900 /* 1901 * now, if stuff is waiting, start it. 1902 * since we just reset it should go 1903 */ 1904 xdc_start(xdcsc, XDC_MAXIOPB); 1905 1906 /* ok, we did it */ 1907 if (oldfree == 0 && xdcsc->nfree) 1908 wakeup(&xdcsc->nfree); 1909 1910 #ifdef XDC_DIAG 1911 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1912 if (del != XDC_MAXIOPB) 1913 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1914 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1915 else 1916 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1917 printf("%s: diag: lots of done jobs (%d)\n", 1918 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1919 #endif 1920 printf("RESET DONE\n"); 1921 return (retval); 1922 } 1923 /* 1924 * xdc_start: start all waiting buffers 1925 */ 1926 1927 void 1928 xdc_start(xdcsc, maxio) 1929 struct xdc_softc *xdcsc; 1930 int maxio; 1931 1932 { 1933 int rqno; 1934 while (maxio && xdcsc->nwait && 1935 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1936 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1937 * param */ 1938 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1939 panic("xdc_start"); /* should never happen */ 1940 maxio--; 1941 } 1942 } 1943 /* 1944 * xdc_remove_iorq: remove "done" IOPB's. 1945 */ 1946 1947 int 1948 xdc_remove_iorq(xdcsc) 1949 struct xdc_softc *xdcsc; 1950 1951 { 1952 int errno, rqno, comm, errs; 1953 struct xdc *xdc = xdcsc->xdc; 1954 struct xd_iopb *iopb; 1955 struct xd_iorq *iorq; 1956 struct buf *bp; 1957 1958 if (xdc->xdc_csr & XDC_F_ERROR) { 1959 /* 1960 * FATAL ERROR: should never happen under normal use. This 1961 * error is so bad, you can't even tell which IOPB is bad, so 1962 * we dump them all. 1963 */ 1964 errno = xdc->xdc_f_err; 1965 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 1966 errno, xdc_e2str(errno)); 1967 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 1968 printf("%s: soft reset failed!\n", 1969 xdcsc->sc_dev.dv_xname); 1970 panic("xdc_remove_iorq: controller DEAD"); 1971 } 1972 return (XD_ERR_AOK); 1973 } 1974 1975 /* 1976 * get iopb that is done 1977 * 1978 * hmm... I used to read the address of the done IOPB off the VME 1979 * registers and calculate the rqno directly from that. that worked 1980 * until I started putting a load on the controller. when loaded, i 1981 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1982 * be set, even after DELAY'ing a while! later on the timeout 1983 * routine would detect IOPBs that were marked "running" but their 1984 * "done" bit was set. rather than dealing directly with this 1985 * problem, it is just easier to look at all running IOPB's for the 1986 * done bit. 1987 */ 1988 if (xdc->xdc_csr & XDC_REMIOPB) { 1989 xdc->xdc_csr = XDC_CLRRIO; 1990 } 1991 1992 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1993 iorq = &xdcsc->reqs[rqno]; 1994 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1995 continue; /* free, or done */ 1996 iopb = &xdcsc->iopbase[rqno]; 1997 if (iopb->done == 0) 1998 continue; /* not done yet */ 1999 2000 #ifdef XDC_DEBUG 2001 { 2002 u_char *rio = (u_char *) iopb; 2003 int sz = sizeof(struct xd_iopb), lcv; 2004 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2005 for (lcv = 0; lcv < sz; lcv++) 2006 printf(" %02x", rio[lcv]); 2007 printf("]\n"); 2008 } 2009 #endif /* XDC_DEBUG */ 2010 2011 xdcsc->nrun--; 2012 2013 comm = iopb->comm; 2014 errs = iopb->errs; 2015 2016 if (errs) 2017 iorq->errno = iopb->errno; 2018 else 2019 iorq->errno = 0; 2020 2021 /* handle non-fatal errors */ 2022 2023 if (errs && 2024 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2025 continue; /* AOK: we resubmitted it */ 2026 2027 2028 /* this iorq is now done (hasn't been restarted or anything) */ 2029 2030 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2031 xdc_perror(iorq, iopb, 0); 2032 2033 /* now, if read/write check to make sure we got all the data 2034 * we needed. (this may not be the case if we got an error in 2035 * the middle of a multisector request). */ 2036 2037 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2038 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2039 /* we just successfully processed a bad144 sector 2040 * note: if we are in bad 144 mode, the pointers have 2041 * been advanced already (see above) and are pointing 2042 * at the bad144 sector. to exit bad144 mode, we 2043 * must advance the pointers 1 sector and issue a new 2044 * request if there are still sectors left to process 2045 * 2046 */ 2047 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2048 2049 /* exit b144 mode */ 2050 iorq->mode = iorq->mode & (~XD_MODE_B144); 2051 2052 if (iorq->sectcnt) { /* more to go! */ 2053 iorq->lasterror = iorq->errno = iopb->errno = 0; 2054 iopb->errs = iopb->done = 0; 2055 iorq->tries = 0; 2056 iopb->sectcnt = iorq->sectcnt; 2057 iopb->cylno = iorq->blockno / 2058 iorq->xd->sectpercyl; 2059 iopb->headno = 2060 (iorq->blockno / iorq->xd->nhead) % 2061 iorq->xd->nhead; 2062 iopb->sectno = iorq->blockno % XDFM_BPS; 2063 iopb->daddr = (u_long) iorq->dbuf; 2064 XDC_HWAIT(xdcsc, rqno); 2065 xdc_start(xdcsc, 1); /* resubmit */ 2066 continue; 2067 } 2068 } 2069 /* final cleanup, totally done with this request */ 2070 2071 switch (XD_STATE(iorq->mode)) { 2072 case XD_SUB_NORM: 2073 bp = iorq->buf; 2074 if (errs) { 2075 bp->b_error = EIO; 2076 bp->b_flags |= B_ERROR; 2077 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2078 } else { 2079 bp->b_resid = 0; /* done */ 2080 } 2081 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2082 iorq->dmamap->dm_mapsize, 2083 (bp->b_flags & B_READ) 2084 ? BUS_DMASYNC_POSTREAD 2085 : BUS_DMASYNC_POSTWRITE); 2086 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2087 2088 disk_unbusy(&iorq->xd->sc_dk, 2089 (bp->b_bcount - bp->b_resid)); 2090 XDC_FREE(xdcsc, rqno); 2091 biodone(bp); 2092 break; 2093 case XD_SUB_WAIT: 2094 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2095 xdcsc->ndone++; 2096 wakeup(iorq); 2097 break; 2098 case XD_SUB_POLL: 2099 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2100 xdcsc->ndone++; 2101 break; 2102 } 2103 } 2104 2105 return (XD_ERR_AOK); 2106 } 2107 2108 /* 2109 * xdc_perror: print error. 2110 * - if still_trying is true: we got an error, retried and got a 2111 * different error. in that case lasterror is the old error, 2112 * and errno is the new one. 2113 * - if still_trying is not true, then if we ever had an error it 2114 * is in lasterror. also, if iorq->errno == 0, then we recovered 2115 * from that error (otherwise iorq->errno == iorq->lasterror). 2116 */ 2117 void 2118 xdc_perror(iorq, iopb, still_trying) 2119 struct xd_iorq *iorq; 2120 struct xd_iopb *iopb; 2121 int still_trying; 2122 2123 { 2124 2125 int error = iorq->lasterror; 2126 2127 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2128 : iorq->xdc->sc_dev.dv_xname); 2129 if (iorq->buf) 2130 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2131 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2132 printf("%s %d/%d/%d: ", 2133 (iopb->comm == XDCMD_RD) ? "read" : "write", 2134 iopb->cylno, iopb->headno, iopb->sectno); 2135 printf("%s", xdc_e2str(error)); 2136 2137 if (still_trying) 2138 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2139 else 2140 if (iorq->errno == 0) 2141 printf(" [recovered in %d tries]", iorq->tries); 2142 2143 printf("\n"); 2144 } 2145 2146 /* 2147 * xdc_error: non-fatal error encountered... recover. 2148 * return AOK if resubmitted, return FAIL if this iopb is done 2149 */ 2150 int 2151 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2152 struct xdc_softc *xdcsc; 2153 struct xd_iorq *iorq; 2154 struct xd_iopb *iopb; 2155 int rqno, comm; 2156 2157 { 2158 int errno = iorq->errno; 2159 int erract = errno & XD_ERA_MASK; 2160 int oldmode, advance; 2161 #ifdef __sparc__ 2162 int i; 2163 #endif 2164 2165 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2166 oldmode = iorq->mode; 2167 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2168 xdcsc->ndone++; 2169 /* make xdc_start ignore us */ 2170 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2171 iorq->mode = oldmode; 2172 xdcsc->ndone--; 2173 } 2174 /* check for read/write to a sector in bad144 table if bad: redirect 2175 * request to bad144 area */ 2176 2177 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2178 (iorq->mode & XD_MODE_B144) == 0) { 2179 advance = iorq->sectcnt - iopb->sectcnt; 2180 XDC_ADVANCE(iorq, advance); 2181 #ifdef __sparc__ 2182 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2183 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2184 iorq->blockno % iorq->xd->nsect)) != -1) { 2185 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2186 * redirect */ 2187 iopb->errno = iopb->done = iopb->errs = 0; 2188 iopb->sectcnt = 1; 2189 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2190 /* second to last acyl */ 2191 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2192 * standard */ 2193 iopb->headno = i / iorq->xd->nhead; 2194 iopb->sectno = i % iorq->xd->nhead; 2195 XDC_HWAIT(xdcsc, rqno); 2196 xdc_start(xdcsc, 1); /* resubmit */ 2197 return (XD_ERR_AOK); /* recovered! */ 2198 } 2199 #endif 2200 } 2201 2202 /* 2203 * it isn't a bad144 sector, must be real error! see if we can retry 2204 * it? 2205 */ 2206 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2207 xdc_perror(iorq, iopb, 1); /* inform of error state 2208 * change */ 2209 iorq->lasterror = errno; 2210 2211 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2212 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2213 iorq->tries++; 2214 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2215 XDC_HWAIT(xdcsc, rqno); 2216 xdc_start(xdcsc, 1); /* restart */ 2217 return (XD_ERR_AOK); /* recovered! */ 2218 } 2219 2220 /* failed to recover from this error */ 2221 return (XD_ERR_FAIL); 2222 } 2223 2224 /* 2225 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2226 */ 2227 void 2228 xdc_tick(arg) 2229 void *arg; 2230 2231 { 2232 struct xdc_softc *xdcsc = arg; 2233 int lcv, s, reset = 0; 2234 #ifdef XDC_DIAG 2235 int wait, run, free, done, whd = 0; 2236 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2237 s = splbio(); 2238 wait = xdcsc->nwait; 2239 run = xdcsc->nrun; 2240 free = xdcsc->nfree; 2241 done = xdcsc->ndone; 2242 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2243 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2244 splx(s); 2245 if (wait + run + free + done != XDC_MAXIOPB) { 2246 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2247 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2248 bzero(mark, sizeof(mark)); 2249 printf("FREE: "); 2250 for (lcv = free; lcv > 0; lcv--) { 2251 printf("%d ", fqc[lcv - 1]); 2252 mark[fqc[lcv - 1]] = 1; 2253 } 2254 printf("\nWAIT: "); 2255 lcv = wait; 2256 while (lcv > 0) { 2257 printf("%d ", wqc[whd]); 2258 mark[wqc[whd]] = 1; 2259 whd = (whd + 1) % XDC_MAXIOPB; 2260 lcv--; 2261 } 2262 printf("\n"); 2263 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2264 if (mark[lcv] == 0) 2265 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2266 lcv, xdcsc->reqs[lcv].mode, 2267 xdcsc->iopbase[lcv].done, 2268 xdcsc->iopbase[lcv].errs, 2269 xdcsc->iopbase[lcv].errno, 2270 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2271 } 2272 } else 2273 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2274 printf("%s: diag: lots of done jobs (%d)\n", 2275 xdcsc->sc_dev.dv_xname, done); 2276 2277 #endif 2278 #ifdef XDC_DEBUG 2279 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2280 xdcsc->sc_dev.dv_xname, 2281 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2282 xdcsc->ndone); 2283 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2284 if (xdcsc->reqs[lcv].mode) 2285 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2286 lcv, 2287 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2288 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2289 } 2290 #endif 2291 2292 /* reduce ttl for each request if one goes to zero, reset xdc */ 2293 s = splbio(); 2294 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2295 if (xdcsc->reqs[lcv].mode == 0 || 2296 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2297 continue; 2298 xdcsc->reqs[lcv].ttl--; 2299 if (xdcsc->reqs[lcv].ttl == 0) 2300 reset = 1; 2301 } 2302 if (reset) { 2303 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2304 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2305 } 2306 splx(s); 2307 2308 /* until next time */ 2309 2310 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2311 } 2312 2313 /* 2314 * xdc_ioctlcmd: this function provides a user level interface to the 2315 * controller via ioctl. this allows "format" programs to be written 2316 * in user code, and is also useful for some debugging. we return 2317 * an error code. called at user priority. 2318 */ 2319 int 2320 xdc_ioctlcmd(xd, dev, xio) 2321 struct xd_softc *xd; 2322 dev_t dev; 2323 struct xd_iocmd *xio; 2324 2325 { 2326 int s, rqno, dummy; 2327 caddr_t dvmabuf = NULL, buf = NULL; 2328 struct xdc_softc *xdcsc; 2329 int rseg, error; 2330 bus_dma_segment_t seg; 2331 2332 /* check sanity of requested command */ 2333 2334 switch (xio->cmd) { 2335 2336 case XDCMD_NOP: /* no op: everything should be zero */ 2337 if (xio->subfn || xio->dptr || xio->dlen || 2338 xio->block || xio->sectcnt) 2339 return (EINVAL); 2340 break; 2341 2342 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2343 case XDCMD_WR: 2344 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2345 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2346 return (EINVAL); 2347 break; 2348 2349 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2350 return (EINVAL); 2351 2352 case XDCMD_WRP: /* write parameters */ 2353 return (EINVAL);/* not useful, except maybe drive 2354 * parameters... but drive parameters should 2355 * go via disklabel changes */ 2356 2357 case XDCMD_RDP: /* read parameters */ 2358 if (xio->subfn != XDFUN_DRV || 2359 xio->dlen || xio->block || xio->dptr) 2360 return (EINVAL); /* allow read drive params to 2361 * get hw_spt */ 2362 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2363 return (0); 2364 break; 2365 2366 case XDCMD_XRD: /* extended read/write */ 2367 case XDCMD_XWR: 2368 2369 switch (xio->subfn) { 2370 2371 case XDFUN_THD:/* track headers */ 2372 if (xio->sectcnt != xd->hw_spt || 2373 (xio->block % xd->nsect) != 0 || 2374 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2375 xio->dptr == NULL) 2376 return (EINVAL); 2377 xio->sectcnt = 0; 2378 break; 2379 2380 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2381 if (xio->cmd == XDCMD_XRD) 2382 return (EINVAL); /* no XDFUN_VFY */ 2383 if (xio->sectcnt || xio->dlen || 2384 (xio->block % xd->nsect) != 0 || xio->dptr) 2385 return (EINVAL); 2386 break; 2387 2388 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2389 return (EINVAL); /* not yet */ 2390 2391 case XDFUN_DM: /* defect map */ 2392 case XDFUN_DMX:/* defect map (alternate location) */ 2393 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2394 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2395 return (EINVAL); 2396 break; 2397 2398 default: 2399 return (EINVAL); 2400 } 2401 break; 2402 2403 case XDCMD_TST: /* diagnostics */ 2404 return (EINVAL); 2405 2406 default: 2407 return (EINVAL);/* ??? */ 2408 } 2409 2410 xdcsc = xd->parent; 2411 2412 /* create DVMA buffer for request if needed */ 2413 if (xio->dlen) { 2414 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2415 &seg, &rseg, 2416 xio->dlen, &buf, 2417 (bus_addr_t *)&dvmabuf)) != 0) { 2418 return (error); 2419 } 2420 2421 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2422 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2423 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2424 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2425 return (error); 2426 } 2427 } 2428 } 2429 2430 /* do it! */ 2431 2432 error = 0; 2433 s = splbio(); 2434 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2435 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2436 if (rqno == XD_ERR_FAIL) { 2437 error = EIO; 2438 goto done; 2439 } 2440 xio->errno = xdcsc->reqs[rqno].errno; 2441 xio->tries = xdcsc->reqs[rqno].tries; 2442 XDC_DONE(xdcsc, rqno, dummy); 2443 2444 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2445 error = copyout(buf, xio->dptr, xio->dlen); 2446 2447 done: 2448 splx(s); 2449 if (dvmabuf) { 2450 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2451 xio->dlen, buf); 2452 } 2453 return (error); 2454 } 2455 2456 /* 2457 * xdc_e2str: convert error code number into an error string 2458 */ 2459 char * 2460 xdc_e2str(no) 2461 int no; 2462 { 2463 switch (no) { 2464 case XD_ERR_FAIL: 2465 return ("Software fatal error"); 2466 case XD_ERR_AOK: 2467 return ("Successful completion"); 2468 case XD_ERR_ICYL: 2469 return ("Illegal cylinder address"); 2470 case XD_ERR_IHD: 2471 return ("Illegal head address"); 2472 case XD_ERR_ISEC: 2473 return ("Illgal sector address"); 2474 case XD_ERR_CZER: 2475 return ("Count zero"); 2476 case XD_ERR_UIMP: 2477 return ("Unimplemented command"); 2478 case XD_ERR_IF1: 2479 return ("Illegal field length 1"); 2480 case XD_ERR_IF2: 2481 return ("Illegal field length 2"); 2482 case XD_ERR_IF3: 2483 return ("Illegal field length 3"); 2484 case XD_ERR_IF4: 2485 return ("Illegal field length 4"); 2486 case XD_ERR_IF5: 2487 return ("Illegal field length 5"); 2488 case XD_ERR_IF6: 2489 return ("Illegal field length 6"); 2490 case XD_ERR_IF7: 2491 return ("Illegal field length 7"); 2492 case XD_ERR_ISG: 2493 return ("Illegal scatter/gather length"); 2494 case XD_ERR_ISPT: 2495 return ("Not enough sectors per track"); 2496 case XD_ERR_ALGN: 2497 return ("Next IOPB address alignment error"); 2498 case XD_ERR_SGAL: 2499 return ("Scatter/gather address alignment error"); 2500 case XD_ERR_SGEC: 2501 return ("Scatter/gather with auto-ECC"); 2502 case XD_ERR_SECC: 2503 return ("Soft ECC corrected"); 2504 case XD_ERR_SIGN: 2505 return ("ECC ignored"); 2506 case XD_ERR_ASEK: 2507 return ("Auto-seek retry recovered"); 2508 case XD_ERR_RTRY: 2509 return ("Soft retry recovered"); 2510 case XD_ERR_HECC: 2511 return ("Hard data ECC"); 2512 case XD_ERR_NHDR: 2513 return ("Header not found"); 2514 case XD_ERR_NRDY: 2515 return ("Drive not ready"); 2516 case XD_ERR_TOUT: 2517 return ("Operation timeout"); 2518 case XD_ERR_VTIM: 2519 return ("VMEDMA timeout"); 2520 case XD_ERR_DSEQ: 2521 return ("Disk sequencer error"); 2522 case XD_ERR_HDEC: 2523 return ("Header ECC error"); 2524 case XD_ERR_RVFY: 2525 return ("Read verify"); 2526 case XD_ERR_VFER: 2527 return ("Fatail VMEDMA error"); 2528 case XD_ERR_VBUS: 2529 return ("VMEbus error"); 2530 case XD_ERR_DFLT: 2531 return ("Drive faulted"); 2532 case XD_ERR_HECY: 2533 return ("Header error/cyliner"); 2534 case XD_ERR_HEHD: 2535 return ("Header error/head"); 2536 case XD_ERR_NOCY: 2537 return ("Drive not on-cylinder"); 2538 case XD_ERR_SEEK: 2539 return ("Seek error"); 2540 case XD_ERR_ILSS: 2541 return ("Illegal sector size"); 2542 case XD_ERR_SEC: 2543 return ("Soft ECC"); 2544 case XD_ERR_WPER: 2545 return ("Write-protect error"); 2546 case XD_ERR_IRAM: 2547 return ("IRAM self test failure"); 2548 case XD_ERR_MT3: 2549 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2550 case XD_ERR_MT4: 2551 return ("Maintenance test 4 failure (header shift reg)"); 2552 case XD_ERR_MT5: 2553 return ("Maintenance test 5 failure (VMEDMA regs)"); 2554 case XD_ERR_MT6: 2555 return ("Maintenance test 6 failure (REGCEL chip)"); 2556 case XD_ERR_MT7: 2557 return ("Maintenance test 7 failure (buffer parity)"); 2558 case XD_ERR_MT8: 2559 return ("Maintenance test 8 failure (disk FIFO)"); 2560 case XD_ERR_IOCK: 2561 return ("IOPB checksum miscompare"); 2562 case XD_ERR_IODM: 2563 return ("IOPB DMA fatal"); 2564 case XD_ERR_IOAL: 2565 return ("IOPB address alignment error"); 2566 case XD_ERR_FIRM: 2567 return ("Firmware error"); 2568 case XD_ERR_MMOD: 2569 return ("Illegal maintenance mode test number"); 2570 case XD_ERR_ACFL: 2571 return ("ACFAIL asserted"); 2572 default: 2573 return ("Unknown error"); 2574 } 2575 } 2576
Indexes created Tue Sep 30 06:09:59 GMT 2025