xd.c revision 1.38
1 /* $NetBSD: xd.c,v 1.38 2001/09/24 23:49:34 eeh 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 <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_dmamem_map(tag, seg, nseg, 397 len, kvap, 398 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 399 bus_dmamem_free(tag, seg, nseg); 400 return (error); 401 } 402 403 if ((error = bus_dmamap_load(tag, map, 404 *kvap, len, NULL, 405 BUS_DMA_NOWAIT)) != 0) { 406 bus_dmamem_unmap(tag, *kvap, len); 407 bus_dmamem_free(tag, seg, nseg); 408 return (error); 409 } 410 411 *dmap = map->dm_segs[0].ds_addr; 412 *nsegp = nseg; 413 return (0); 414 } 415 416 void 417 xd_dmamem_free(tag, map, seg, nseg, len, kva) 418 bus_dma_tag_t tag; 419 bus_dmamap_t map; 420 bus_dma_segment_t *seg; 421 int nseg; 422 bus_size_t len; 423 caddr_t kva; 424 { 425 426 bus_dmamap_unload(tag, map); 427 bus_dmamem_unmap(tag, kva, len); 428 bus_dmamem_free(tag, seg, nseg); 429 } 430 431 432 /* 433 * a u t o c o n f i g f u n c t i o n s 434 */ 435 436 /* 437 * xdcmatch: determine if xdc is present or not. we do a 438 * soft reset to detect the xdc. 439 */ 440 441 int 442 xdc_probe(arg, tag, handle) 443 void *arg; 444 bus_space_tag_t tag; 445 bus_space_handle_t handle; 446 { 447 struct xdc *xdc = (void *)handle; /* XXX */ 448 int del = 0; 449 450 xdc->xdc_csr = XDC_RESET; 451 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 452 return (del > 0 ? 0 : EIO); 453 } 454 455 int xdcmatch(parent, cf, aux) 456 struct device *parent; 457 struct cfdata *cf; 458 void *aux; 459 { 460 struct vme_attach_args *va = aux; 461 vme_chipset_tag_t ct = va->va_vct; 462 vme_am_t mod; 463 int error; 464 465 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 466 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 467 return (0); 468 469 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 470 mod, VME_D32, xdc_probe, 0); 471 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 472 473 return (error == 0); 474 } 475 476 /* 477 * xdcattach: attach controller 478 */ 479 void 480 xdcattach(parent, self, aux) 481 struct device *parent, *self; 482 void *aux; 483 484 { 485 struct vme_attach_args *va = aux; 486 vme_chipset_tag_t ct = va->va_vct; 487 bus_space_tag_t bt; 488 bus_space_handle_t bh; 489 vme_intr_handle_t ih; 490 vme_am_t mod; 491 struct xdc_softc *xdc = (void *) self; 492 struct xdc_attach_args xa; 493 int lcv, rqno, error; 494 struct xd_iopb_ctrl *ctl; 495 bus_dma_segment_t seg; 496 int rseg; 497 vme_mapresc_t resc; 498 499 xdc_md_setup(); 500 501 /* get addressing and intr level stuff from autoconfig and load it 502 * into our xdc_softc. */ 503 504 xdc->dmatag = va->va_bdt; 505 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 506 507 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 508 panic("xdc: vme alloc"); 509 510 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 511 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 512 panic("xdc: vme_map"); 513 514 xdc->xdc = (struct xdc *) bh; /* XXX */ 515 xdc->ipl = va->ilevel; 516 xdc->vector = va->ivector; 517 518 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 519 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 520 521 /* 522 * allocate and zero buffers 523 * 524 * note: we simplify the code by allocating the max number of iopbs and 525 * iorq's up front. thus, we avoid linked lists and the costs 526 * associated with them in exchange for wasting a little memory. 527 */ 528 529 /* Get DMA handle for misc. transfers */ 530 if ((error = vme_dmamap_create( 531 ct, /* VME chip tag */ 532 MAXPHYS, /* size */ 533 VME_AM_A24, /* address modifier */ 534 VME_D32, /* data size */ 535 0, /* swap */ 536 1, /* nsegments */ 537 MAXPHYS, /* maxsegsz */ 538 0, /* boundary */ 539 BUS_DMA_NOWAIT, 540 &xdc->auxmap)) != 0) { 541 542 printf("%s: DMA buffer map create error %d\n", 543 xdc->sc_dev.dv_xname, error); 544 return; 545 } 546 547 548 /* Get DMA handle for mapping iorq descriptors */ 549 if ((error = vme_dmamap_create( 550 ct, /* VME chip tag */ 551 XDC_MAXIOPB * sizeof(struct xd_iopb), 552 VME_AM_A24, /* address modifier */ 553 VME_D32, /* data size */ 554 0, /* swap */ 555 1, /* nsegments */ 556 XDC_MAXIOPB * sizeof(struct xd_iopb), 557 0, /* boundary */ 558 BUS_DMA_NOWAIT, 559 &xdc->iopmap)) != 0) { 560 561 printf("%s: DMA buffer map create error %d\n", 562 xdc->sc_dev.dv_xname, error); 563 return; 564 } 565 566 /* Get DMA buffer for iorq descriptors */ 567 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 568 XDC_MAXIOPB * sizeof(struct xd_iopb), 569 (caddr_t *)&xdc->iopbase, 570 (bus_addr_t *)&xdc->dvmaiopb)) != 0) { 571 printf("%s: DMA buffer alloc error %d\n", 572 xdc->sc_dev.dv_xname, error); 573 return; 574 } 575 576 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 577 578 xdc->reqs = (struct xd_iorq *) 579 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), M_DEVBUF, M_NOWAIT); 580 if (xdc->reqs == NULL) 581 panic("xdc malloc"); 582 bzero(xdc->reqs, XDC_MAXIOPB * sizeof(struct xd_iorq)); 583 584 /* init free list, iorq to iopb pointers, and non-zero fields in the 585 * iopb which never change. */ 586 587 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 588 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 589 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 590 xdc->freereq[lcv] = lcv; 591 xdc->iopbase[lcv].fixd = 1; /* always the same */ 592 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 593 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 594 595 if ((error = vme_dmamap_create( 596 ct, /* VME chip tag */ 597 MAXPHYS, /* size */ 598 VME_AM_A24, /* address modifier */ 599 VME_D32, /* data size */ 600 0, /* swap */ 601 1, /* nsegments */ 602 MAXPHYS, /* maxsegsz */ 603 0, /* boundary */ 604 BUS_DMA_NOWAIT, 605 &xdc->reqs[lcv].dmamap)) != 0) { 606 607 printf("%s: DMA buffer map create error %d\n", 608 xdc->sc_dev.dv_xname, error); 609 return; 610 } 611 } 612 xdc->nfree = XDC_MAXIOPB; 613 xdc->nrun = 0; 614 xdc->waithead = xdc->waitend = xdc->nwait = 0; 615 xdc->ndone = 0; 616 617 /* init queue of waiting bufs */ 618 619 BUFQ_INIT(&xdc->sc_wq); 620 callout_init(&xdc->sc_tick_ch); 621 622 /* 623 * section 7 of the manual tells us how to init the controller: 624 * - read controller parameters (6/0) 625 * - write controller parameters (5/0) 626 */ 627 628 /* read controller parameters and insure we have a 753/7053 */ 629 630 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 631 if (rqno == XD_ERR_FAIL) { 632 printf(": couldn't read controller params\n"); 633 return; /* shouldn't ever happen */ 634 } 635 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 636 if (ctl->ctype != XDCT_753) { 637 if (xdc->reqs[rqno].errno) 638 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 639 printf(": doesn't identify as a 753/7053\n"); 640 XDC_DONE(xdc, rqno, error); 641 return; 642 } 643 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 644 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 645 XDC_DONE(xdc, rqno, error); 646 647 /* now write controller parameters (xdc_cmd sets all params for us) */ 648 649 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 650 XDC_DONE(xdc, rqno, error); 651 if (error) { 652 printf("%s: controller config error: %s\n", 653 xdc->sc_dev.dv_xname, xdc_e2str(error)); 654 return; 655 } 656 657 /* link in interrupt with higher level software */ 658 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 659 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 660 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 661 xdc->sc_dev.dv_xname, "intr"); 662 663 664 /* now we must look for disks using autoconfig */ 665 xa.fullmode = XD_SUB_POLL; 666 xa.booting = 1; 667 668 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 669 (void) config_found(self, (void *) &xa, NULL); 670 671 /* start the watchdog clock */ 672 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 673 674 } 675 676 /* 677 * xdmatch: probe for disk. 678 * 679 * note: we almost always say disk is present. this allows us to 680 * spin up and configure a disk after the system is booted (we can 681 * call xdattach!). 682 */ 683 int 684 xdmatch(parent, cf, aux) 685 struct device *parent; 686 struct cfdata *cf; 687 void *aux; 688 { 689 struct xdc_attach_args *xa = aux; 690 691 /* looking for autoconf wildcard or exact match */ 692 693 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 694 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 695 return 0; 696 697 return 1; 698 699 } 700 701 /* 702 * xdattach: attach a disk. this can be called from autoconf and also 703 * from xdopen/xdstrategy. 704 */ 705 void 706 xdattach(parent, self, aux) 707 struct device *parent, *self; 708 void *aux; 709 710 { 711 struct xd_softc *xd = (void *) self; 712 struct xdc_softc *xdc = (void *) parent; 713 struct xdc_attach_args *xa = aux; 714 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 715 struct xd_iopb_drive *driopb; 716 struct dkbad *dkb; 717 int rseg, error; 718 bus_dma_segment_t seg; 719 caddr_t dmaddr; 720 caddr_t buf; 721 722 /* 723 * Always re-initialize the disk structure. We want statistics 724 * to start with a clean slate. 725 */ 726 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 727 xd->sc_dk.dk_driver = &xddkdriver; 728 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 729 730 /* if booting, init the xd_softc */ 731 732 if (xa->booting) { 733 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 734 xd->flags = 0; 735 xd->parent = xdc; 736 } 737 xd->xd_drive = xa->driveno; 738 fmode = xa->fullmode; 739 xdc->sc_drives[xa->driveno] = xd; 740 741 /* if not booting, make sure we are the only process in the attach for 742 * this drive. if locked out, sleep on it. */ 743 744 if (!xa->booting) { 745 s = splbio(); 746 while (xd->state == XD_DRIVE_ATTACHING) { 747 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 748 splx(s); 749 return; 750 } 751 } 752 printf("%s at %s", 753 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 754 } 755 756 /* we now have control */ 757 xd->state = XD_DRIVE_ATTACHING; 758 newstate = XD_DRIVE_UNKNOWN; 759 760 buf = NULL; 761 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 762 XDFM_BPS, 763 (caddr_t *)&buf, 764 (bus_addr_t *)&dmaddr)) != 0) { 765 printf("%s: DMA buffer alloc error %d\n", 766 xdc->sc_dev.dv_xname, error); 767 return; 768 } 769 770 /* first try and reset the drive */ 771 772 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 773 XDC_DONE(xdc, rqno, error); 774 if (error == XD_ERR_NRDY) { 775 printf(" drive %d: off-line\n", xa->driveno); 776 goto done; 777 } 778 if (error) { 779 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 780 goto done; 781 } 782 printf(" drive %d: ready\n", xa->driveno); 783 784 /* now set format parameters */ 785 786 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 787 XDC_DONE(xdc, rqno, error); 788 if (error) { 789 printf("%s: write format parameters failed: %s\n", 790 xd->sc_dev.dv_xname, xdc_e2str(error)); 791 goto done; 792 } 793 794 /* get drive parameters */ 795 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 796 if (rqno != XD_ERR_FAIL) { 797 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 798 spt = driopb->sectpertrk; 799 } 800 XDC_DONE(xdc, rqno, error); 801 if (error) { 802 printf("%s: read drive parameters failed: %s\n", 803 xd->sc_dev.dv_xname, xdc_e2str(error)); 804 goto done; 805 } 806 807 /* 808 * now set drive parameters (to semi-bogus values) so we can read the 809 * disk label. 810 */ 811 xd->pcyl = xd->ncyl = 1; 812 xd->acyl = 0; 813 xd->nhead = 1; 814 xd->nsect = 1; 815 xd->sectpercyl = 1; 816 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 817 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 818 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 819 XDC_DONE(xdc, rqno, error); 820 if (error) { 821 printf("%s: write drive parameters failed: %s\n", 822 xd->sc_dev.dv_xname, xdc_e2str(error)); 823 goto done; 824 } 825 826 /* read disk label */ 827 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 828 XDC_DONE(xdc, rqno, error); 829 if (error) { 830 printf("%s: reading disk label failed: %s\n", 831 xd->sc_dev.dv_xname, xdc_e2str(error)); 832 goto done; 833 } 834 newstate = XD_DRIVE_NOLABEL; 835 836 xd->hw_spt = spt; 837 /* Attach the disk: must be before getdisklabel to malloc label */ 838 disk_attach(&xd->sc_dk); 839 840 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 841 goto done; 842 843 /* inform the user of what is up */ 844 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 845 buf, xd->pcyl, spt); 846 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 847 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 848 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 849 XDFM_BPS); 850 851 /* now set the real drive parameters! */ 852 853 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 854 XDC_DONE(xdc, rqno, error); 855 if (error) { 856 printf("%s: write real drive parameters failed: %s\n", 857 xd->sc_dev.dv_xname, xdc_e2str(error)); 858 goto done; 859 } 860 newstate = XD_DRIVE_ONLINE; 861 862 /* 863 * read bad144 table. this table resides on the first sector of the 864 * last track of the disk (i.e. second cyl of "acyl" area). 865 */ 866 867 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 868 (xd->nhead - 1) * xd->nsect; /* last head */ 869 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 870 XDC_DONE(xdc, rqno, error); 871 if (error) { 872 printf("%s: reading bad144 failed: %s\n", 873 xd->sc_dev.dv_xname, xdc_e2str(error)); 874 goto done; 875 } 876 877 /* check dkbad for sanity */ 878 dkb = (struct dkbad *) buf; 879 for (lcv = 0; lcv < 126; lcv++) { 880 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 881 dkb->bt_bad[lcv].bt_cyl == 0) && 882 dkb->bt_bad[lcv].bt_trksec == 0xffff) 883 continue; /* blank */ 884 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 885 break; 886 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 887 break; 888 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 889 break; 890 } 891 if (lcv != 126) { 892 printf("%s: warning: invalid bad144 sector!\n", 893 xd->sc_dev.dv_xname); 894 } else { 895 bcopy(buf, &xd->dkb, XDFM_BPS); 896 } 897 898 done: 899 if (buf != NULL) { 900 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 901 &seg, rseg, XDFM_BPS, buf); 902 } 903 904 xd->state = newstate; 905 if (!xa->booting) { 906 wakeup(&xd->state); 907 splx(s); 908 } 909 } 910 911 /* 912 * end of autoconfig functions 913 */ 914 915 /* 916 * { b , c } d e v s w f u n c t i o n s 917 */ 918 919 /* 920 * xdclose: close device 921 */ 922 int 923 xdclose(dev, flag, fmt, p) 924 dev_t dev; 925 int flag, fmt; 926 struct proc *p; 927 { 928 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 929 int part = DISKPART(dev); 930 931 /* clear mask bits */ 932 933 switch (fmt) { 934 case S_IFCHR: 935 xd->sc_dk.dk_copenmask &= ~(1 << part); 936 break; 937 case S_IFBLK: 938 xd->sc_dk.dk_bopenmask &= ~(1 << part); 939 break; 940 } 941 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 942 943 return 0; 944 } 945 946 /* 947 * xddump: crash dump system 948 */ 949 int 950 xddump(dev, blkno, va, size) 951 dev_t dev; 952 daddr_t blkno; 953 caddr_t va; 954 size_t size; 955 { 956 int unit, part; 957 struct xd_softc *xd; 958 959 unit = DISKUNIT(dev); 960 if (unit >= xd_cd.cd_ndevs) 961 return ENXIO; 962 part = DISKPART(dev); 963 964 xd = xd_cd.cd_devs[unit]; 965 966 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 967 'a' + part); 968 969 return ENXIO; 970 971 /* outline: globals: "dumplo" == sector number of partition to start 972 * dump at (convert to physical sector with partition table) 973 * "dumpsize" == size of dump in clicks "physmem" == size of physical 974 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 975 * physmem) 976 * 977 * dump a copy of physical memory to the dump device starting at sector 978 * "dumplo" in the swap partition (make sure > 0). map in pages as 979 * we go. use polled I/O. 980 * 981 * XXX how to handle NON_CONTIG? */ 982 983 } 984 985 /* 986 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 987 */ 988 int 989 xdioctl(dev, command, addr, flag, p) 990 dev_t dev; 991 u_long command; 992 caddr_t addr; 993 int flag; 994 struct proc *p; 995 996 { 997 struct xd_softc *xd; 998 struct xd_iocmd *xio; 999 int error, s, unit; 1000 #ifdef __HAVE_OLD_DISKLABEL 1001 struct disklabel newlabel; 1002 #endif 1003 struct disklabel *lp; 1004 1005 unit = DISKUNIT(dev); 1006 1007 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1008 return (ENXIO); 1009 1010 /* switch on ioctl type */ 1011 1012 switch (command) { 1013 case DIOCSBAD: /* set bad144 info */ 1014 if ((flag & FWRITE) == 0) 1015 return EBADF; 1016 s = splbio(); 1017 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1018 splx(s); 1019 return 0; 1020 1021 case DIOCGDINFO: /* get disk label */ 1022 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1023 return 0; 1024 #ifdef __HAVE_OLD_DISKLABEL 1025 case ODIOCGDINFO: 1026 newlabel = *(xd->sc_dk.dk_label); 1027 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1028 return ENOTTY; 1029 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1030 return 0; 1031 #endif 1032 1033 case DIOCGPART: /* get partition info */ 1034 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1035 ((struct partinfo *) addr)->part = 1036 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1037 return 0; 1038 1039 case DIOCSDINFO: /* set disk label */ 1040 #ifdef __HAVE_OLD_DISKLABEL 1041 case ODIOCSDINFO: 1042 if (command == ODIOCSDINFO) { 1043 memset(&newlabel, 0, sizeof newlabel); 1044 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1045 lp = &newlabel; 1046 } else 1047 #endif 1048 lp = (struct disklabel *)addr; 1049 1050 if ((flag & FWRITE) == 0) 1051 return EBADF; 1052 error = setdisklabel(xd->sc_dk.dk_label, 1053 lp, /* xd->sc_dk.dk_openmask : */ 0, 1054 xd->sc_dk.dk_cpulabel); 1055 if (error == 0) { 1056 if (xd->state == XD_DRIVE_NOLABEL) 1057 xd->state = XD_DRIVE_ONLINE; 1058 } 1059 return error; 1060 1061 case DIOCWLABEL: /* change write status of disk label */ 1062 if ((flag & FWRITE) == 0) 1063 return EBADF; 1064 if (*(int *) addr) 1065 xd->flags |= XD_WLABEL; 1066 else 1067 xd->flags &= ~XD_WLABEL; 1068 return 0; 1069 1070 case DIOCWDINFO: /* write disk label */ 1071 #ifdef __HAVE_OLD_DISKLABEL 1072 case ODIOCWDINFO: 1073 if (command == ODIOCWDINFO) { 1074 memset(&newlabel, 0, sizeof newlabel); 1075 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1076 lp = &newlabel; 1077 } else 1078 #endif 1079 lp = (struct disklabel *)addr; 1080 1081 if ((flag & FWRITE) == 0) 1082 return EBADF; 1083 error = setdisklabel(xd->sc_dk.dk_label, 1084 lp, /* xd->sc_dk.dk_openmask : */ 0, 1085 xd->sc_dk.dk_cpulabel); 1086 if (error == 0) { 1087 if (xd->state == XD_DRIVE_NOLABEL) 1088 xd->state = XD_DRIVE_ONLINE; 1089 1090 /* Simulate opening partition 0 so write succeeds. */ 1091 xd->sc_dk.dk_openmask |= (1 << 0); 1092 error = writedisklabel(MAKEDISKDEV(major(dev), 1093 DISKUNIT(dev), RAW_PART), 1094 xdstrategy, xd->sc_dk.dk_label, 1095 xd->sc_dk.dk_cpulabel); 1096 xd->sc_dk.dk_openmask = 1097 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1098 } 1099 return error; 1100 1101 case DIOSXDCMD: 1102 xio = (struct xd_iocmd *) addr; 1103 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1104 return (error); 1105 return (xdc_ioctlcmd(xd, dev, xio)); 1106 1107 default: 1108 return ENOTTY; 1109 } 1110 } 1111 /* 1112 * xdopen: open drive 1113 */ 1114 1115 int 1116 xdopen(dev, flag, fmt, p) 1117 dev_t dev; 1118 int flag, fmt; 1119 struct proc *p; 1120 { 1121 int unit, part; 1122 struct xd_softc *xd; 1123 struct xdc_attach_args xa; 1124 1125 /* first, could it be a valid target? */ 1126 1127 unit = DISKUNIT(dev); 1128 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1129 return (ENXIO); 1130 part = DISKPART(dev); 1131 1132 /* do we need to attach the drive? */ 1133 1134 if (xd->state == XD_DRIVE_UNKNOWN) { 1135 xa.driveno = xd->xd_drive; 1136 xa.fullmode = XD_SUB_WAIT; 1137 xa.booting = 0; 1138 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1139 if (xd->state == XD_DRIVE_UNKNOWN) { 1140 return (EIO); 1141 } 1142 } 1143 /* check for partition */ 1144 1145 if (part != RAW_PART && 1146 (part >= xd->sc_dk.dk_label->d_npartitions || 1147 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1148 return (ENXIO); 1149 } 1150 /* set open masks */ 1151 1152 switch (fmt) { 1153 case S_IFCHR: 1154 xd->sc_dk.dk_copenmask |= (1 << part); 1155 break; 1156 case S_IFBLK: 1157 xd->sc_dk.dk_bopenmask |= (1 << part); 1158 break; 1159 } 1160 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1161 1162 return 0; 1163 } 1164 1165 int 1166 xdread(dev, uio, flags) 1167 dev_t dev; 1168 struct uio *uio; 1169 int flags; 1170 { 1171 1172 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1173 } 1174 1175 int 1176 xdwrite(dev, uio, flags) 1177 dev_t dev; 1178 struct uio *uio; 1179 int flags; 1180 { 1181 1182 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1183 } 1184 1185 1186 /* 1187 * xdsize: return size of a partition for a dump 1188 */ 1189 1190 int 1191 xdsize(dev) 1192 dev_t dev; 1193 1194 { 1195 struct xd_softc *xdsc; 1196 int unit, part, size, omask; 1197 1198 /* valid unit? */ 1199 unit = DISKUNIT(dev); 1200 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1201 return (-1); 1202 1203 part = DISKPART(dev); 1204 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1205 1206 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1207 return (-1); 1208 1209 /* do it */ 1210 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1211 size = -1; /* only give valid size for swap partitions */ 1212 else 1213 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1214 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1215 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1216 return (-1); 1217 return (size); 1218 } 1219 /* 1220 * xdstrategy: buffering system interface to xd. 1221 */ 1222 1223 void 1224 xdstrategy(bp) 1225 struct buf *bp; 1226 1227 { 1228 struct xd_softc *xd; 1229 struct xdc_softc *parent; 1230 int s, unit; 1231 struct xdc_attach_args xa; 1232 1233 unit = DISKUNIT(bp->b_dev); 1234 1235 /* check for live device */ 1236 1237 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1238 bp->b_blkno < 0 || 1239 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1240 bp->b_error = EINVAL; 1241 goto bad; 1242 } 1243 /* do we need to attach the drive? */ 1244 1245 if (xd->state == XD_DRIVE_UNKNOWN) { 1246 xa.driveno = xd->xd_drive; 1247 xa.fullmode = XD_SUB_WAIT; 1248 xa.booting = 0; 1249 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1250 if (xd->state == XD_DRIVE_UNKNOWN) { 1251 bp->b_error = EIO; 1252 goto bad; 1253 } 1254 } 1255 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1256 /* no I/O to unlabeled disks, unless raw partition */ 1257 bp->b_error = EIO; 1258 goto bad; 1259 } 1260 /* short circuit zero length request */ 1261 1262 if (bp->b_bcount == 0) 1263 goto done; 1264 1265 /* check bounds with label (disksubr.c). Determine the size of the 1266 * transfer, and make sure it is within the boundaries of the 1267 * partition. Adjust transfer if needed, and signal errors or early 1268 * completion. */ 1269 1270 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1271 (xd->flags & XD_WLABEL) != 0) <= 0) 1272 goto done; 1273 1274 /* 1275 * now we know we have a valid buf structure that we need to do I/O 1276 * on. 1277 * 1278 * note that we don't disksort because the controller has a sorting 1279 * algorithm built into the hardware. 1280 */ 1281 1282 s = splbio(); /* protect the queues */ 1283 1284 /* first, give jobs in front of us a chance */ 1285 parent = xd->parent; 1286 while (parent->nfree > 0 && BUFQ_FIRST(&parent->sc_wq) != NULL) 1287 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1288 break; 1289 1290 /* if there are no free iorq's, then we just queue and return. the 1291 * buffs will get picked up later by xdcintr(). 1292 */ 1293 1294 if (parent->nfree == 0) { 1295 BUFQ_INSERT_TAIL(&parent->sc_wq, bp); 1296 splx(s); 1297 return; 1298 } 1299 1300 /* now we have free iopb's and we are at splbio... start 'em up */ 1301 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1302 return; 1303 } 1304 1305 /* done! */ 1306 1307 splx(s); 1308 return; 1309 1310 bad: /* tells upper layers we have an error */ 1311 bp->b_flags |= B_ERROR; 1312 done: /* tells upper layers we are done with this 1313 * buf */ 1314 bp->b_resid = bp->b_bcount; 1315 biodone(bp); 1316 } 1317 /* 1318 * end of {b,c}devsw functions 1319 */ 1320 1321 /* 1322 * i n t e r r u p t f u n c t i o n 1323 * 1324 * xdcintr: hardware interrupt. 1325 */ 1326 int 1327 xdcintr(v) 1328 void *v; 1329 1330 { 1331 struct xdc_softc *xdcsc = v; 1332 1333 /* kick the event counter */ 1334 1335 xdcsc->sc_intrcnt.ev_count++; 1336 1337 /* remove as many done IOPBs as possible */ 1338 1339 xdc_remove_iorq(xdcsc); 1340 1341 /* start any iorq's already waiting */ 1342 1343 xdc_start(xdcsc, XDC_MAXIOPB); 1344 1345 /* fill up any remaining iorq's with queue'd buffers */ 1346 1347 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1348 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1349 break; 1350 1351 return (1); 1352 } 1353 /* 1354 * end of interrupt function 1355 */ 1356 1357 /* 1358 * i n t e r n a l f u n c t i o n s 1359 */ 1360 1361 /* 1362 * xdc_rqinit: fill out the fields of an I/O request 1363 */ 1364 1365 inline void 1366 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1367 struct xd_iorq *rq; 1368 struct xdc_softc *xdc; 1369 struct xd_softc *xd; 1370 int md; 1371 u_long blk; 1372 int cnt; 1373 caddr_t db; 1374 struct buf *bp; 1375 { 1376 rq->xdc = xdc; 1377 rq->xd = xd; 1378 rq->ttl = XDC_MAXTTL + 10; 1379 rq->mode = md; 1380 rq->tries = rq->errno = rq->lasterror = 0; 1381 rq->blockno = blk; 1382 rq->sectcnt = cnt; 1383 rq->dbuf = db; 1384 rq->buf = bp; 1385 } 1386 /* 1387 * xdc_rqtopb: load up an IOPB based on an iorq 1388 */ 1389 1390 void 1391 xdc_rqtopb(iorq, iopb, cmd, subfun) 1392 struct xd_iorq *iorq; 1393 struct xd_iopb *iopb; 1394 int cmd, subfun; 1395 1396 { 1397 u_long block, dp; 1398 1399 /* standard stuff */ 1400 1401 iopb->errs = iopb->done = 0; 1402 iopb->comm = cmd; 1403 iopb->errno = iopb->status = 0; 1404 iopb->subfun = subfun; 1405 if (iorq->xd) 1406 iopb->unit = iorq->xd->xd_drive; 1407 else 1408 iopb->unit = 0; 1409 1410 /* check for alternate IOPB format */ 1411 1412 if (cmd == XDCMD_WRP) { 1413 switch (subfun) { 1414 case XDFUN_CTL:{ 1415 struct xd_iopb_ctrl *ctrl = 1416 (struct xd_iopb_ctrl *) iopb; 1417 iopb->lll = 0; 1418 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1419 ? 0 1420 : iorq->xdc->ipl; 1421 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1422 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1423 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1424 XDPC_RBC | XDPC_ECC2; 1425 ctrl->throttle = XDC_THROTTLE; 1426 ctrl->delay = XDC_DELAY; 1427 break; 1428 } 1429 case XDFUN_DRV:{ 1430 struct xd_iopb_drive *drv = 1431 (struct xd_iopb_drive *)iopb; 1432 /* we assume that the disk label has the right 1433 * info */ 1434 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1435 drv->dparam_ipl = (XDC_DPARAM << 3); 1436 else 1437 drv->dparam_ipl = (XDC_DPARAM << 3) | 1438 iorq->xdc->ipl; 1439 drv->maxsect = iorq->xd->nsect - 1; 1440 drv->maxsector = drv->maxsect; 1441 /* note: maxsector != maxsect only if you are 1442 * doing cyl sparing */ 1443 drv->headoff = 0; 1444 drv->maxcyl = iorq->xd->pcyl - 1; 1445 drv->maxhead = iorq->xd->nhead - 1; 1446 break; 1447 } 1448 case XDFUN_FMT:{ 1449 struct xd_iopb_format *form = 1450 (struct xd_iopb_format *) iopb; 1451 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1452 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1453 else 1454 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1455 iorq->xdc->ipl; 1456 form->field1 = XDFM_FIELD1; 1457 form->field2 = XDFM_FIELD2; 1458 form->field3 = XDFM_FIELD3; 1459 form->field4 = XDFM_FIELD4; 1460 form->bytespersec = XDFM_BPS; 1461 form->field6 = XDFM_FIELD6; 1462 form->field7 = XDFM_FIELD7; 1463 break; 1464 } 1465 } 1466 } else { 1467 1468 /* normal IOPB case (harmless to RDP command) */ 1469 1470 iopb->lll = 0; 1471 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1472 ? 0 1473 : iorq->xdc->ipl; 1474 iopb->sectcnt = iorq->sectcnt; 1475 block = iorq->blockno; 1476 if (iorq->xd == NULL || block == 0) { 1477 iopb->sectno = iopb->headno = iopb->cylno = 0; 1478 } else { 1479 iopb->sectno = block % iorq->xd->nsect; 1480 block = block / iorq->xd->nsect; 1481 iopb->headno = block % iorq->xd->nhead; 1482 block = block / iorq->xd->nhead; 1483 iopb->cylno = block; 1484 } 1485 dp = (u_long) iorq->dbuf; 1486 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1487 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1488 ? XDC_ADDRMOD32 1489 : XDC_ADDRMOD; 1490 } 1491 } 1492 1493 /* 1494 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1495 * If you've already got an IORQ, you can call submit directly (currently 1496 * there is no need to do this). NORM requests are handled separately. 1497 */ 1498 int 1499 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1500 struct xdc_softc *xdcsc; 1501 int cmd, subfn, unit, block, scnt; 1502 char *dptr; 1503 int fullmode; 1504 1505 { 1506 int rqno, submode = XD_STATE(fullmode), retry; 1507 struct xd_iorq *iorq; 1508 struct xd_iopb *iopb; 1509 1510 /* get iorq/iopb */ 1511 switch (submode) { 1512 case XD_SUB_POLL: 1513 while (xdcsc->nfree == 0) { 1514 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1515 return (XD_ERR_FAIL); 1516 } 1517 break; 1518 case XD_SUB_WAIT: 1519 retry = 1; 1520 while (retry) { 1521 while (xdcsc->nfree == 0) { 1522 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1523 return (XD_ERR_FAIL); 1524 } 1525 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1526 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1527 return (XD_ERR_FAIL); 1528 } 1529 if (xdcsc->nfree) 1530 retry = 0; /* got it */ 1531 } 1532 break; 1533 default: 1534 return (XD_ERR_FAIL); /* illegal */ 1535 } 1536 if (xdcsc->nfree == 0) 1537 panic("xdcmd nfree"); 1538 rqno = XDC_RQALLOC(xdcsc); 1539 iorq = &xdcsc->reqs[rqno]; 1540 iopb = iorq->iopb; 1541 1542 1543 /* init iorq/iopb */ 1544 1545 xdc_rqinit(iorq, xdcsc, 1546 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1547 fullmode, block, scnt, dptr, NULL); 1548 1549 /* load IOPB from iorq */ 1550 1551 xdc_rqtopb(iorq, iopb, cmd, subfn); 1552 1553 /* submit it for processing */ 1554 1555 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1556 1557 return (rqno); 1558 } 1559 /* 1560 * xdc_startbuf 1561 * start a buffer running, assumes nfree > 0 1562 */ 1563 1564 int 1565 xdc_startbuf(xdcsc, xdsc, bp) 1566 struct xdc_softc *xdcsc; 1567 struct xd_softc *xdsc; 1568 struct buf *bp; 1569 1570 { 1571 int rqno, partno; 1572 struct xd_iorq *iorq; 1573 struct xd_iopb *iopb; 1574 u_long block; 1575 /* caddr_t dbuf;*/ 1576 int error; 1577 1578 if (!xdcsc->nfree) 1579 panic("xdc_startbuf free"); 1580 rqno = XDC_RQALLOC(xdcsc); 1581 iorq = &xdcsc->reqs[rqno]; 1582 iopb = iorq->iopb; 1583 1584 /* get buf */ 1585 1586 if (bp == NULL) { 1587 bp = BUFQ_FIRST(&xdcsc->sc_wq); 1588 if (bp == NULL) 1589 panic("xdc_startbuf bp"); 1590 BUFQ_REMOVE(&xdcsc->sc_wq, bp); 1591 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1592 } 1593 partno = DISKPART(bp->b_dev); 1594 #ifdef XDC_DEBUG 1595 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1596 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1597 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1598 bp->b_bcount, bp->b_data); 1599 #endif 1600 1601 /* 1602 * load request. we have to calculate the correct block number based 1603 * on partition info. 1604 * 1605 * note that iorq points to the buffer as mapped into DVMA space, 1606 * where as the bp->b_data points to its non-DVMA mapping. 1607 */ 1608 1609 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1610 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1611 1612 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1613 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1614 if (error != 0) { 1615 printf("%s: warning: cannot load DMA map\n", 1616 xdcsc->sc_dev.dv_xname); 1617 XDC_FREE(xdcsc, rqno); 1618 BUFQ_INSERT_TAIL(&xdcsc->sc_wq, bp); 1619 return (XD_ERR_FAIL); /* XXX: need some sort of 1620 * call-back scheme here? */ 1621 } 1622 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1623 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1624 ? BUS_DMASYNC_PREREAD 1625 : BUS_DMASYNC_PREWRITE); 1626 1627 /* init iorq and load iopb from it */ 1628 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1629 bp->b_bcount / XDFM_BPS, 1630 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1631 bp); 1632 1633 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1634 1635 /* Instrumentation. */ 1636 disk_busy(&xdsc->sc_dk); 1637 1638 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1639 1640 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1641 return (XD_ERR_AOK); 1642 } 1643 1644 1645 /* 1646 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1647 * if ok. if it fail returns an error code. type is XD_SUB_*. 1648 * 1649 * note: caller frees iorq in all cases except NORM 1650 * 1651 * return value: 1652 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1653 * WAIT: XD_AOK (success), <error-code> (failed) 1654 * POLL: <same as WAIT> 1655 * NOQ : <same as NORM> 1656 * 1657 * there are three sources for i/o requests: 1658 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1659 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1660 * [3] open/ioctl: these are I/O requests done in the context of a process, 1661 * and the process should block until they are done. 1662 * 1663 * software state is stored in the iorq structure. each iorq has an 1664 * iopb structure. the hardware understands the iopb structure. 1665 * every command must go through an iopb. a 7053 can only handle 1666 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1667 * DVMA space at boot up time. what happens if we run out of iopb's? 1668 * for i/o type [1], the buffers are queued at the "buff" layer and 1669 * picked up later by the interrupt routine. for case [2] the 1670 * programmed i/o driver is called with a special flag that says 1671 * return when one iopb is free. for case [3] the process can sleep 1672 * on the iorq free list until some iopbs are avaliable. 1673 */ 1674 1675 1676 int 1677 xdc_submit_iorq(xdcsc, iorqno, type) 1678 struct xdc_softc *xdcsc; 1679 int iorqno; 1680 int type; 1681 1682 { 1683 u_long iopbaddr; 1684 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1685 1686 #ifdef XDC_DEBUG 1687 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1688 iorqno, type); 1689 #endif 1690 1691 /* first check and see if controller is busy */ 1692 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1693 #ifdef XDC_DEBUG 1694 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1695 #endif 1696 if (type == XD_SUB_NOQ) 1697 return (XD_ERR_FAIL); /* failed */ 1698 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1699 switch (type) { 1700 case XD_SUB_NORM: 1701 return XD_ERR_AOK; /* success */ 1702 case XD_SUB_WAIT: 1703 while (iorq->iopb->done == 0) { 1704 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1705 } 1706 return (iorq->errno); 1707 case XD_SUB_POLL: 1708 return (xdc_piodriver(xdcsc, iorqno, 0)); 1709 default: 1710 panic("xdc_submit_iorq adding"); 1711 } 1712 } 1713 #ifdef XDC_DEBUG 1714 { 1715 u_char *rio = (u_char *) iorq->iopb; 1716 int sz = sizeof(struct xd_iopb), lcv; 1717 printf("%s: aio #%d [", 1718 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1719 for (lcv = 0; lcv < sz; lcv++) 1720 printf(" %02x", rio[lcv]); 1721 printf("]\n"); 1722 } 1723 #endif /* XDC_DEBUG */ 1724 1725 /* controller not busy, start command */ 1726 iopbaddr = (u_long) iorq->dmaiopb; 1727 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1728 xdcsc->nrun++; 1729 /* command now running, wrap it up */ 1730 switch (type) { 1731 case XD_SUB_NORM: 1732 case XD_SUB_NOQ: 1733 return (XD_ERR_AOK); /* success */ 1734 case XD_SUB_WAIT: 1735 while (iorq->iopb->done == 0) { 1736 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1737 } 1738 return (iorq->errno); 1739 case XD_SUB_POLL: 1740 return (xdc_piodriver(xdcsc, iorqno, 0)); 1741 default: 1742 panic("xdc_submit_iorq wrap up"); 1743 } 1744 panic("xdc_submit_iorq"); 1745 return 0; /* not reached */ 1746 } 1747 1748 1749 /* 1750 * xdc_piodriver 1751 * 1752 * programmed i/o driver. this function takes over the computer 1753 * and drains off all i/o requests. it returns the status of the iorq 1754 * the caller is interesting in. if freeone is true, then it returns 1755 * when there is a free iorq. 1756 */ 1757 int 1758 xdc_piodriver(xdcsc, iorqno, freeone) 1759 struct xdc_softc *xdcsc; 1760 int iorqno; 1761 int freeone; 1762 1763 { 1764 int nreset = 0; 1765 int retval = 0; 1766 u_long count; 1767 struct xdc *xdc = xdcsc->xdc; 1768 #ifdef XDC_DEBUG 1769 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1770 iorqno, freeone); 1771 #endif 1772 1773 while (xdcsc->nwait || xdcsc->nrun) { 1774 #ifdef XDC_DEBUG 1775 printf("xdc_piodriver: wait=%d, run=%d\n", 1776 xdcsc->nwait, xdcsc->nrun); 1777 #endif 1778 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1779 #ifdef XDC_DEBUG 1780 printf("xdc_piodriver: done wait with count = %d\n", count); 1781 #endif 1782 /* we expect some progress soon */ 1783 if (count == 0 && nreset >= 2) { 1784 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1785 #ifdef XDC_DEBUG 1786 printf("xdc_piodriver: timeout\n"); 1787 #endif 1788 return (XD_ERR_FAIL); 1789 } 1790 if (count == 0) { 1791 if (xdc_reset(xdcsc, 0, 1792 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1793 XD_ERR_FAIL, 1794 0) == XD_ERR_FAIL) 1795 return (XD_ERR_FAIL); /* flushes all but POLL 1796 * requests, resets */ 1797 continue; 1798 } 1799 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1800 if (freeone) { 1801 if (xdcsc->nrun < XDC_MAXIOPB) { 1802 #ifdef XDC_DEBUG 1803 printf("xdc_piodriver: done: one free\n"); 1804 #endif 1805 return (XD_ERR_AOK); 1806 } 1807 continue; /* don't xdc_start */ 1808 } 1809 xdc_start(xdcsc, XDC_MAXIOPB); 1810 } 1811 1812 /* get return value */ 1813 1814 retval = xdcsc->reqs[iorqno].errno; 1815 1816 #ifdef XDC_DEBUG 1817 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1818 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1819 #endif 1820 1821 /* now that we've drained everything, start up any bufs that have 1822 * queued */ 1823 1824 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1825 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1826 break; 1827 1828 return (retval); 1829 } 1830 1831 /* 1832 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1833 * we steal iopb[0] for this, but we put it back when we are done. 1834 */ 1835 void 1836 xdc_xdreset(xdcsc, xdsc) 1837 struct xdc_softc *xdcsc; 1838 struct xd_softc *xdsc; 1839 1840 { 1841 struct xd_iopb tmpiopb; 1842 u_long addr; 1843 int del; 1844 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1845 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1846 xdcsc->iopbase->comm = XDCMD_RST; 1847 xdcsc->iopbase->unit = xdsc->xd_drive; 1848 addr = (u_long) xdcsc->dvmaiopb; 1849 XDC_GO(xdcsc->xdc, addr); /* go! */ 1850 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1851 if (del <= 0 || xdcsc->iopbase->errs) { 1852 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1853 xdc_e2str(xdcsc->iopbase->errno)); 1854 xdcsc->xdc->xdc_csr = XDC_RESET; 1855 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1856 if (del <= 0) 1857 panic("xdc_reset"); 1858 } else { 1859 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1860 } 1861 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1862 } 1863 1864 1865 /* 1866 * xdc_reset: reset everything: requests are marked as errors except 1867 * a polled request (which is resubmitted) 1868 */ 1869 int 1870 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1871 struct xdc_softc *xdcsc; 1872 int quiet, blastmode, error; 1873 struct xd_softc *xdsc; 1874 1875 { 1876 int del = 0, lcv, retval = XD_ERR_AOK; 1877 int oldfree = xdcsc->nfree; 1878 1879 /* soft reset hardware */ 1880 1881 if (!quiet) 1882 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1883 xdcsc->xdc->xdc_csr = XDC_RESET; 1884 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1885 if (del <= 0) { 1886 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1887 retval = XD_ERR_FAIL; 1888 } 1889 if (xdsc) 1890 xdc_xdreset(xdcsc, xdsc); 1891 1892 /* fix queues based on "blast-mode" */ 1893 1894 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1895 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1896 1897 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1898 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1899 XD_STATE(iorq->mode) != XD_SUB_NORM) 1900 /* is it active? */ 1901 continue; 1902 1903 xdcsc->nrun--; /* it isn't running any more */ 1904 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1905 /* failed */ 1906 iorq->errno = error; 1907 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1908 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1909 case XD_SUB_NORM: 1910 iorq->buf->b_error = EIO; 1911 iorq->buf->b_flags |= B_ERROR; 1912 iorq->buf->b_resid = 1913 iorq->sectcnt * XDFM_BPS; 1914 1915 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1916 iorq->dmamap->dm_mapsize, 1917 (iorq->buf->b_flags & B_READ) 1918 ? BUS_DMASYNC_POSTREAD 1919 : BUS_DMASYNC_POSTWRITE); 1920 1921 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1922 1923 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1924 (xdcsc->reqs[lcv].buf->b_bcount - 1925 xdcsc->reqs[lcv].buf->b_resid)); 1926 biodone(iorq->buf); 1927 XDC_FREE(xdcsc, lcv); /* add to free list */ 1928 break; 1929 case XD_SUB_WAIT: 1930 wakeup(iorq); 1931 case XD_SUB_POLL: 1932 xdcsc->ndone++; 1933 iorq->mode = 1934 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1935 break; 1936 } 1937 1938 } else { 1939 1940 /* resubmit, put at front of wait queue */ 1941 XDC_HWAIT(xdcsc, lcv); 1942 } 1943 } 1944 1945 /* 1946 * now, if stuff is waiting, start it. 1947 * since we just reset it should go 1948 */ 1949 xdc_start(xdcsc, XDC_MAXIOPB); 1950 1951 /* ok, we did it */ 1952 if (oldfree == 0 && xdcsc->nfree) 1953 wakeup(&xdcsc->nfree); 1954 1955 #ifdef XDC_DIAG 1956 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1957 if (del != XDC_MAXIOPB) 1958 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1959 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1960 else 1961 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1962 printf("%s: diag: lots of done jobs (%d)\n", 1963 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1964 #endif 1965 printf("RESET DONE\n"); 1966 return (retval); 1967 } 1968 /* 1969 * xdc_start: start all waiting buffers 1970 */ 1971 1972 void 1973 xdc_start(xdcsc, maxio) 1974 struct xdc_softc *xdcsc; 1975 int maxio; 1976 1977 { 1978 int rqno; 1979 while (maxio && xdcsc->nwait && 1980 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1981 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1982 * param */ 1983 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1984 panic("xdc_start"); /* should never happen */ 1985 maxio--; 1986 } 1987 } 1988 /* 1989 * xdc_remove_iorq: remove "done" IOPB's. 1990 */ 1991 1992 int 1993 xdc_remove_iorq(xdcsc) 1994 struct xdc_softc *xdcsc; 1995 1996 { 1997 int errno, rqno, comm, errs; 1998 struct xdc *xdc = xdcsc->xdc; 1999 struct xd_iopb *iopb; 2000 struct xd_iorq *iorq; 2001 struct buf *bp; 2002 2003 if (xdc->xdc_csr & XDC_F_ERROR) { 2004 /* 2005 * FATAL ERROR: should never happen under normal use. This 2006 * error is so bad, you can't even tell which IOPB is bad, so 2007 * we dump them all. 2008 */ 2009 errno = xdc->xdc_f_err; 2010 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2011 errno, xdc_e2str(errno)); 2012 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2013 printf("%s: soft reset failed!\n", 2014 xdcsc->sc_dev.dv_xname); 2015 panic("xdc_remove_iorq: controller DEAD"); 2016 } 2017 return (XD_ERR_AOK); 2018 } 2019 2020 /* 2021 * get iopb that is done 2022 * 2023 * hmm... I used to read the address of the done IOPB off the VME 2024 * registers and calculate the rqno directly from that. that worked 2025 * until I started putting a load on the controller. when loaded, i 2026 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2027 * be set, even after DELAY'ing a while! later on the timeout 2028 * routine would detect IOPBs that were marked "running" but their 2029 * "done" bit was set. rather than dealing directly with this 2030 * problem, it is just easier to look at all running IOPB's for the 2031 * done bit. 2032 */ 2033 if (xdc->xdc_csr & XDC_REMIOPB) { 2034 xdc->xdc_csr = XDC_CLRRIO; 2035 } 2036 2037 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2038 iorq = &xdcsc->reqs[rqno]; 2039 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2040 continue; /* free, or done */ 2041 iopb = &xdcsc->iopbase[rqno]; 2042 if (iopb->done == 0) 2043 continue; /* not done yet */ 2044 2045 #ifdef XDC_DEBUG 2046 { 2047 u_char *rio = (u_char *) iopb; 2048 int sz = sizeof(struct xd_iopb), lcv; 2049 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2050 for (lcv = 0; lcv < sz; lcv++) 2051 printf(" %02x", rio[lcv]); 2052 printf("]\n"); 2053 } 2054 #endif /* XDC_DEBUG */ 2055 2056 xdcsc->nrun--; 2057 2058 comm = iopb->comm; 2059 errs = iopb->errs; 2060 2061 if (errs) 2062 iorq->errno = iopb->errno; 2063 else 2064 iorq->errno = 0; 2065 2066 /* handle non-fatal errors */ 2067 2068 if (errs && 2069 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2070 continue; /* AOK: we resubmitted it */ 2071 2072 2073 /* this iorq is now done (hasn't been restarted or anything) */ 2074 2075 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2076 xdc_perror(iorq, iopb, 0); 2077 2078 /* now, if read/write check to make sure we got all the data 2079 * we needed. (this may not be the case if we got an error in 2080 * the middle of a multisector request). */ 2081 2082 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2083 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2084 /* we just successfully processed a bad144 sector 2085 * note: if we are in bad 144 mode, the pointers have 2086 * been advanced already (see above) and are pointing 2087 * at the bad144 sector. to exit bad144 mode, we 2088 * must advance the pointers 1 sector and issue a new 2089 * request if there are still sectors left to process 2090 * 2091 */ 2092 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2093 2094 /* exit b144 mode */ 2095 iorq->mode = iorq->mode & (~XD_MODE_B144); 2096 2097 if (iorq->sectcnt) { /* more to go! */ 2098 iorq->lasterror = iorq->errno = iopb->errno = 0; 2099 iopb->errs = iopb->done = 0; 2100 iorq->tries = 0; 2101 iopb->sectcnt = iorq->sectcnt; 2102 iopb->cylno = iorq->blockno / 2103 iorq->xd->sectpercyl; 2104 iopb->headno = 2105 (iorq->blockno / iorq->xd->nhead) % 2106 iorq->xd->nhead; 2107 iopb->sectno = iorq->blockno % XDFM_BPS; 2108 iopb->daddr = (u_long) iorq->dbuf; 2109 XDC_HWAIT(xdcsc, rqno); 2110 xdc_start(xdcsc, 1); /* resubmit */ 2111 continue; 2112 } 2113 } 2114 /* final cleanup, totally done with this request */ 2115 2116 switch (XD_STATE(iorq->mode)) { 2117 case XD_SUB_NORM: 2118 bp = iorq->buf; 2119 if (errs) { 2120 bp->b_error = EIO; 2121 bp->b_flags |= B_ERROR; 2122 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2123 } else { 2124 bp->b_resid = 0; /* done */ 2125 } 2126 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2127 iorq->dmamap->dm_mapsize, 2128 (bp->b_flags & B_READ) 2129 ? BUS_DMASYNC_POSTREAD 2130 : BUS_DMASYNC_POSTWRITE); 2131 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2132 2133 disk_unbusy(&iorq->xd->sc_dk, 2134 (bp->b_bcount - bp->b_resid)); 2135 XDC_FREE(xdcsc, rqno); 2136 biodone(bp); 2137 break; 2138 case XD_SUB_WAIT: 2139 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2140 xdcsc->ndone++; 2141 wakeup(iorq); 2142 break; 2143 case XD_SUB_POLL: 2144 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2145 xdcsc->ndone++; 2146 break; 2147 } 2148 } 2149 2150 return (XD_ERR_AOK); 2151 } 2152 2153 /* 2154 * xdc_perror: print error. 2155 * - if still_trying is true: we got an error, retried and got a 2156 * different error. in that case lasterror is the old error, 2157 * and errno is the new one. 2158 * - if still_trying is not true, then if we ever had an error it 2159 * is in lasterror. also, if iorq->errno == 0, then we recovered 2160 * from that error (otherwise iorq->errno == iorq->lasterror). 2161 */ 2162 void 2163 xdc_perror(iorq, iopb, still_trying) 2164 struct xd_iorq *iorq; 2165 struct xd_iopb *iopb; 2166 int still_trying; 2167 2168 { 2169 2170 int error = iorq->lasterror; 2171 2172 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2173 : iorq->xdc->sc_dev.dv_xname); 2174 if (iorq->buf) 2175 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2176 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2177 printf("%s %d/%d/%d: ", 2178 (iopb->comm == XDCMD_RD) ? "read" : "write", 2179 iopb->cylno, iopb->headno, iopb->sectno); 2180 printf("%s", xdc_e2str(error)); 2181 2182 if (still_trying) 2183 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2184 else 2185 if (iorq->errno == 0) 2186 printf(" [recovered in %d tries]", iorq->tries); 2187 2188 printf("\n"); 2189 } 2190 2191 /* 2192 * xdc_error: non-fatal error encountered... recover. 2193 * return AOK if resubmitted, return FAIL if this iopb is done 2194 */ 2195 int 2196 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2197 struct xdc_softc *xdcsc; 2198 struct xd_iorq *iorq; 2199 struct xd_iopb *iopb; 2200 int rqno, comm; 2201 2202 { 2203 int errno = iorq->errno; 2204 int erract = errno & XD_ERA_MASK; 2205 int oldmode, advance; 2206 #ifdef __sparc__ 2207 int i; 2208 #endif 2209 2210 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2211 oldmode = iorq->mode; 2212 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2213 xdcsc->ndone++; 2214 /* make xdc_start ignore us */ 2215 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2216 iorq->mode = oldmode; 2217 xdcsc->ndone--; 2218 } 2219 /* check for read/write to a sector in bad144 table if bad: redirect 2220 * request to bad144 area */ 2221 2222 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2223 (iorq->mode & XD_MODE_B144) == 0) { 2224 advance = iorq->sectcnt - iopb->sectcnt; 2225 XDC_ADVANCE(iorq, advance); 2226 #ifdef __sparc__ 2227 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2228 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2229 iorq->blockno % iorq->xd->nsect)) != -1) { 2230 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2231 * redirect */ 2232 iopb->errno = iopb->done = iopb->errs = 0; 2233 iopb->sectcnt = 1; 2234 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2235 /* second to last acyl */ 2236 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2237 * standard */ 2238 iopb->headno = i / iorq->xd->nhead; 2239 iopb->sectno = i % iorq->xd->nhead; 2240 XDC_HWAIT(xdcsc, rqno); 2241 xdc_start(xdcsc, 1); /* resubmit */ 2242 return (XD_ERR_AOK); /* recovered! */ 2243 } 2244 #endif 2245 } 2246 2247 /* 2248 * it isn't a bad144 sector, must be real error! see if we can retry 2249 * it? 2250 */ 2251 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2252 xdc_perror(iorq, iopb, 1); /* inform of error state 2253 * change */ 2254 iorq->lasterror = errno; 2255 2256 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2257 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2258 iorq->tries++; 2259 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2260 XDC_HWAIT(xdcsc, rqno); 2261 xdc_start(xdcsc, 1); /* restart */ 2262 return (XD_ERR_AOK); /* recovered! */ 2263 } 2264 2265 /* failed to recover from this error */ 2266 return (XD_ERR_FAIL); 2267 } 2268 2269 /* 2270 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2271 */ 2272 void 2273 xdc_tick(arg) 2274 void *arg; 2275 2276 { 2277 struct xdc_softc *xdcsc = arg; 2278 int lcv, s, reset = 0; 2279 #ifdef XDC_DIAG 2280 int wait, run, free, done, whd = 0; 2281 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2282 s = splbio(); 2283 wait = xdcsc->nwait; 2284 run = xdcsc->nrun; 2285 free = xdcsc->nfree; 2286 done = xdcsc->ndone; 2287 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2288 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2289 splx(s); 2290 if (wait + run + free + done != XDC_MAXIOPB) { 2291 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2292 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2293 bzero(mark, sizeof(mark)); 2294 printf("FREE: "); 2295 for (lcv = free; lcv > 0; lcv--) { 2296 printf("%d ", fqc[lcv - 1]); 2297 mark[fqc[lcv - 1]] = 1; 2298 } 2299 printf("\nWAIT: "); 2300 lcv = wait; 2301 while (lcv > 0) { 2302 printf("%d ", wqc[whd]); 2303 mark[wqc[whd]] = 1; 2304 whd = (whd + 1) % XDC_MAXIOPB; 2305 lcv--; 2306 } 2307 printf("\n"); 2308 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2309 if (mark[lcv] == 0) 2310 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2311 lcv, xdcsc->reqs[lcv].mode, 2312 xdcsc->iopbase[lcv].done, 2313 xdcsc->iopbase[lcv].errs, 2314 xdcsc->iopbase[lcv].errno, 2315 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2316 } 2317 } else 2318 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2319 printf("%s: diag: lots of done jobs (%d)\n", 2320 xdcsc->sc_dev.dv_xname, done); 2321 2322 #endif 2323 #ifdef XDC_DEBUG 2324 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2325 xdcsc->sc_dev.dv_xname, 2326 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2327 xdcsc->ndone); 2328 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2329 if (xdcsc->reqs[lcv].mode) 2330 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2331 lcv, 2332 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2333 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2334 } 2335 #endif 2336 2337 /* reduce ttl for each request if one goes to zero, reset xdc */ 2338 s = splbio(); 2339 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2340 if (xdcsc->reqs[lcv].mode == 0 || 2341 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2342 continue; 2343 xdcsc->reqs[lcv].ttl--; 2344 if (xdcsc->reqs[lcv].ttl == 0) 2345 reset = 1; 2346 } 2347 if (reset) { 2348 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2349 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2350 } 2351 splx(s); 2352 2353 /* until next time */ 2354 2355 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2356 } 2357 2358 /* 2359 * xdc_ioctlcmd: this function provides a user level interface to the 2360 * controller via ioctl. this allows "format" programs to be written 2361 * in user code, and is also useful for some debugging. we return 2362 * an error code. called at user priority. 2363 */ 2364 int 2365 xdc_ioctlcmd(xd, dev, xio) 2366 struct xd_softc *xd; 2367 dev_t dev; 2368 struct xd_iocmd *xio; 2369 2370 { 2371 int s, rqno, dummy; 2372 caddr_t dvmabuf = NULL, buf = NULL; 2373 struct xdc_softc *xdcsc; 2374 int rseg, error; 2375 bus_dma_segment_t seg; 2376 2377 /* check sanity of requested command */ 2378 2379 switch (xio->cmd) { 2380 2381 case XDCMD_NOP: /* no op: everything should be zero */ 2382 if (xio->subfn || xio->dptr || xio->dlen || 2383 xio->block || xio->sectcnt) 2384 return (EINVAL); 2385 break; 2386 2387 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2388 case XDCMD_WR: 2389 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2390 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2391 return (EINVAL); 2392 break; 2393 2394 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2395 return (EINVAL); 2396 2397 case XDCMD_WRP: /* write parameters */ 2398 return (EINVAL);/* not useful, except maybe drive 2399 * parameters... but drive parameters should 2400 * go via disklabel changes */ 2401 2402 case XDCMD_RDP: /* read parameters */ 2403 if (xio->subfn != XDFUN_DRV || 2404 xio->dlen || xio->block || xio->dptr) 2405 return (EINVAL); /* allow read drive params to 2406 * get hw_spt */ 2407 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2408 return (0); 2409 break; 2410 2411 case XDCMD_XRD: /* extended read/write */ 2412 case XDCMD_XWR: 2413 2414 switch (xio->subfn) { 2415 2416 case XDFUN_THD:/* track headers */ 2417 if (xio->sectcnt != xd->hw_spt || 2418 (xio->block % xd->nsect) != 0 || 2419 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2420 xio->dptr == NULL) 2421 return (EINVAL); 2422 xio->sectcnt = 0; 2423 break; 2424 2425 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2426 if (xio->cmd == XDCMD_XRD) 2427 return (EINVAL); /* no XDFUN_VFY */ 2428 if (xio->sectcnt || xio->dlen || 2429 (xio->block % xd->nsect) != 0 || xio->dptr) 2430 return (EINVAL); 2431 break; 2432 2433 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2434 return (EINVAL); /* not yet */ 2435 2436 case XDFUN_DM: /* defect map */ 2437 case XDFUN_DMX:/* defect map (alternate location) */ 2438 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2439 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2440 return (EINVAL); 2441 break; 2442 2443 default: 2444 return (EINVAL); 2445 } 2446 break; 2447 2448 case XDCMD_TST: /* diagnostics */ 2449 return (EINVAL); 2450 2451 default: 2452 return (EINVAL);/* ??? */ 2453 } 2454 2455 xdcsc = xd->parent; 2456 2457 /* create DVMA buffer for request if needed */ 2458 if (xio->dlen) { 2459 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2460 &seg, &rseg, 2461 xio->dlen, &buf, 2462 (bus_addr_t *)&dvmabuf)) != 0) { 2463 return (error); 2464 } 2465 2466 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2467 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2468 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2469 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2470 return (error); 2471 } 2472 } 2473 } 2474 2475 /* do it! */ 2476 2477 error = 0; 2478 s = splbio(); 2479 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2480 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2481 if (rqno == XD_ERR_FAIL) { 2482 error = EIO; 2483 goto done; 2484 } 2485 xio->errno = xdcsc->reqs[rqno].errno; 2486 xio->tries = xdcsc->reqs[rqno].tries; 2487 XDC_DONE(xdcsc, rqno, dummy); 2488 2489 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2490 error = copyout(buf, xio->dptr, xio->dlen); 2491 2492 done: 2493 splx(s); 2494 if (dvmabuf) { 2495 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2496 xio->dlen, buf); 2497 } 2498 return (error); 2499 } 2500 2501 /* 2502 * xdc_e2str: convert error code number into an error string 2503 */ 2504 char * 2505 xdc_e2str(no) 2506 int no; 2507 { 2508 switch (no) { 2509 case XD_ERR_FAIL: 2510 return ("Software fatal error"); 2511 case XD_ERR_AOK: 2512 return ("Successful completion"); 2513 case XD_ERR_ICYL: 2514 return ("Illegal cylinder address"); 2515 case XD_ERR_IHD: 2516 return ("Illegal head address"); 2517 case XD_ERR_ISEC: 2518 return ("Illgal sector address"); 2519 case XD_ERR_CZER: 2520 return ("Count zero"); 2521 case XD_ERR_UIMP: 2522 return ("Unimplemented command"); 2523 case XD_ERR_IF1: 2524 return ("Illegal field length 1"); 2525 case XD_ERR_IF2: 2526 return ("Illegal field length 2"); 2527 case XD_ERR_IF3: 2528 return ("Illegal field length 3"); 2529 case XD_ERR_IF4: 2530 return ("Illegal field length 4"); 2531 case XD_ERR_IF5: 2532 return ("Illegal field length 5"); 2533 case XD_ERR_IF6: 2534 return ("Illegal field length 6"); 2535 case XD_ERR_IF7: 2536 return ("Illegal field length 7"); 2537 case XD_ERR_ISG: 2538 return ("Illegal scatter/gather length"); 2539 case XD_ERR_ISPT: 2540 return ("Not enough sectors per track"); 2541 case XD_ERR_ALGN: 2542 return ("Next IOPB address alignment error"); 2543 case XD_ERR_SGAL: 2544 return ("Scatter/gather address alignment error"); 2545 case XD_ERR_SGEC: 2546 return ("Scatter/gather with auto-ECC"); 2547 case XD_ERR_SECC: 2548 return ("Soft ECC corrected"); 2549 case XD_ERR_SIGN: 2550 return ("ECC ignored"); 2551 case XD_ERR_ASEK: 2552 return ("Auto-seek retry recovered"); 2553 case XD_ERR_RTRY: 2554 return ("Soft retry recovered"); 2555 case XD_ERR_HECC: 2556 return ("Hard data ECC"); 2557 case XD_ERR_NHDR: 2558 return ("Header not found"); 2559 case XD_ERR_NRDY: 2560 return ("Drive not ready"); 2561 case XD_ERR_TOUT: 2562 return ("Operation timeout"); 2563 case XD_ERR_VTIM: 2564 return ("VMEDMA timeout"); 2565 case XD_ERR_DSEQ: 2566 return ("Disk sequencer error"); 2567 case XD_ERR_HDEC: 2568 return ("Header ECC error"); 2569 case XD_ERR_RVFY: 2570 return ("Read verify"); 2571 case XD_ERR_VFER: 2572 return ("Fatail VMEDMA error"); 2573 case XD_ERR_VBUS: 2574 return ("VMEbus error"); 2575 case XD_ERR_DFLT: 2576 return ("Drive faulted"); 2577 case XD_ERR_HECY: 2578 return ("Header error/cyliner"); 2579 case XD_ERR_HEHD: 2580 return ("Header error/head"); 2581 case XD_ERR_NOCY: 2582 return ("Drive not on-cylinder"); 2583 case XD_ERR_SEEK: 2584 return ("Seek error"); 2585 case XD_ERR_ILSS: 2586 return ("Illegal sector size"); 2587 case XD_ERR_SEC: 2588 return ("Soft ECC"); 2589 case XD_ERR_WPER: 2590 return ("Write-protect error"); 2591 case XD_ERR_IRAM: 2592 return ("IRAM self test failure"); 2593 case XD_ERR_MT3: 2594 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2595 case XD_ERR_MT4: 2596 return ("Maintenance test 4 failure (header shift reg)"); 2597 case XD_ERR_MT5: 2598 return ("Maintenance test 5 failure (VMEDMA regs)"); 2599 case XD_ERR_MT6: 2600 return ("Maintenance test 6 failure (REGCEL chip)"); 2601 case XD_ERR_MT7: 2602 return ("Maintenance test 7 failure (buffer parity)"); 2603 case XD_ERR_MT8: 2604 return ("Maintenance test 8 failure (disk FIFO)"); 2605 case XD_ERR_IOCK: 2606 return ("IOPB checksum miscompare"); 2607 case XD_ERR_IODM: 2608 return ("IOPB DMA fatal"); 2609 case XD_ERR_IOAL: 2610 return ("IOPB address alignment error"); 2611 case XD_ERR_FIRM: 2612 return ("Firmware error"); 2613 case XD_ERR_MMOD: 2614 return ("Illegal maintenance mode test number"); 2615 case XD_ERR_ACFL: 2616 return ("ACFAIL asserted"); 2617 default: 2618 return ("Unknown error"); 2619 } 2620 } 2621
Indexes created Tue Sep 30 11:09:46 GMT 2025