1 /* $NetBSD: xd.c,v 1.40 2002/01/14 13:32:48 tsutsui Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck@ccrc.wustl.edu> 39 * started: 27-Feb-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * 45 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 46 * the time to answer some of my questions about the 753/7053. 47 * 48 * note: the 753 and the 7053 are programmed the same way, but are 49 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 50 * VME card (found in many VME based suns). 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xd.c,v 1.40 2002/01/14 13:32:48 tsutsui Exp $"); 55 56 #undef XDC_DEBUG /* full debug */ 57 #define XDC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 59 #define XDC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/dkbad.h> 77 #include <sys/conf.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/vmereg.h> 87 #include <dev/vme/vmevar.h> 88 89 #include <dev/vme/xdreg.h> 90 #include <dev/vme/xdvar.h> 91 #include <dev/vme/xio.h> 92 93 #include "locators.h" 94 95 /* 96 * macros 97 */ 98 99 /* 100 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 101 */ 102 #define XDC_TWAIT(SC, N) { \ 103 (SC)->waitq[(SC)->waitend] = (N); \ 104 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 105 (SC)->nwait++; \ 106 } 107 108 /* 109 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 110 */ 111 #define XDC_HWAIT(SC, N) { \ 112 (SC)->waithead = ((SC)->waithead == 0) ? \ 113 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 114 (SC)->waitq[(SC)->waithead] = (N); \ 115 (SC)->nwait++; \ 116 } 117 118 /* 119 * XDC_GET_WAITER: gets the first request waiting on the waitq 120 * and removes it (so it can be submitted) 121 */ 122 #define XDC_GET_WAITER(XDCSC, RQ) { \ 123 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 124 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 125 xdcsc->nwait--; \ 126 } 127 128 /* 129 * XDC_FREE: add iorq "N" to SC's free list 130 */ 131 #define XDC_FREE(SC, N) { \ 132 (SC)->freereq[(SC)->nfree++] = (N); \ 133 (SC)->reqs[N].mode = 0; \ 134 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 135 } 136 137 138 /* 139 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 140 */ 141 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 142 143 /* 144 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 145 */ 146 #define XDC_GO(XDC, ADDR) { \ 147 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 148 (ADDR) = ((ADDR) >> 8); \ 149 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 150 (ADDR) = ((ADDR) >> 8); \ 151 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 152 (ADDR) = ((ADDR) >> 8); \ 153 (XDC)->xdc_iopbaddr3 = (ADDR); \ 154 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 155 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 156 } 157 158 /* 159 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 160 * LCV is a counter. If it goes to zero then we timed out. 161 */ 162 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 163 (LCV) = (TIME); \ 164 while ((LCV) > 0) { \ 165 if ((XDC)->xdc_csr & (BITS)) break; \ 166 (LCV) = (LCV) - 1; \ 167 DELAY(1); \ 168 } \ 169 } 170 171 /* 172 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 173 */ 174 #define XDC_DONE(SC,RQ,ER) { \ 175 if ((RQ) == XD_ERR_FAIL) { \ 176 (ER) = (RQ); \ 177 } else { \ 178 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 179 wakeup(&(SC)->ndone); \ 180 (ER) = (SC)->reqs[RQ].errno; \ 181 XDC_FREE((SC), (RQ)); \ 182 } \ 183 } 184 185 /* 186 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 187 */ 188 #define XDC_ADVANCE(IORQ, N) { \ 189 if (N) { \ 190 (IORQ)->sectcnt -= (N); \ 191 (IORQ)->blockno += (N); \ 192 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 193 } \ 194 } 195 196 /* 197 * note - addresses you can sleep on: 198 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 199 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 200 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 201 * to drop below XDC_SUBWAITLIM) 202 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 203 */ 204 205 206 /* 207 * function prototypes 208 * "xdc_*" functions are internal, all others are external interfaces 209 */ 210 211 extern int pil_to_vme[]; /* from obio.c */ 212 213 /* internals */ 214 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 215 char *xdc_e2str __P((int)); 216 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 217 struct xd_iopb *, int, int)); 218 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 219 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 220 int xdc_piodriver __P((struct xdc_softc *, int, int)); 221 int xdc_remove_iorq __P((struct xdc_softc *)); 222 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 223 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 224 struct xd_softc *, int, u_long, int, 225 caddr_t, struct buf *)); 226 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 227 void xdc_start __P((struct xdc_softc *, int)); 228 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 229 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 230 void xdc_tick __P((void *)); 231 void xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 232 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 233 int *, bus_size_t, caddr_t *, bus_addr_t *); 234 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 235 int, bus_size_t, caddr_t); 236 237 238 /* machine interrupt hook */ 239 int xdcintr __P((void *)); 240 241 /* autoconf */ 242 int xdcmatch __P((struct device *, struct cfdata *, void *)); 243 void xdcattach __P((struct device *, struct device *, void *)); 244 int xdmatch __P((struct device *, struct cfdata *, void *)); 245 void xdattach __P((struct device *, struct device *, void *)); 246 static int xdc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 247 248 static void xddummystrat __P((struct buf *)); 249 int xdgetdisklabel __P((struct xd_softc *, void *)); 250 251 bdev_decl(xd); 252 cdev_decl(xd); 253 254 /* XXX - think about this more.. xd_machdep? */ 255 void xdc_md_setup __P((void)); 256 int XDC_DELAY; 257 258 #if defined(__sparc__) 259 #include <sparc/sparc/vaddrs.h> 260 #include <sparc/sparc/cpuvar.h> 261 void xdc_md_setup() 262 { 263 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 264 XDC_DELAY = XDC_DELAY_4_300; 265 else 266 XDC_DELAY = XDC_DELAY_SPARC; 267 } 268 #elif defined(sun3) 269 void xdc_md_setup() 270 { 271 XDC_DELAY = XDC_DELAY_SUN3; 272 } 273 #else 274 void xdc_md_setup() 275 { 276 XDC_DELAY = 0; 277 } 278 #endif 279 280 /* 281 * cfattach's: device driver interface to autoconfig 282 */ 283 284 struct cfattach xdc_ca = { 285 sizeof(struct xdc_softc), xdcmatch, xdcattach 286 }; 287 288 289 struct cfattach xd_ca = { 290 sizeof(struct xd_softc), xdmatch, xdattach 291 }; 292 293 extern struct cfdriver xd_cd; 294 295 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 296 int driveno; /* unit number */ 297 int fullmode; /* submit mode */ 298 int booting; /* are we booting or not? */ 299 }; 300 301 /* 302 * dkdriver 303 */ 304 305 struct dkdriver xddkdriver = {xdstrategy}; 306 307 /* 308 * start: disk label fix code (XXX) 309 */ 310 311 static void *xd_labeldata; 312 313 static void 314 xddummystrat(bp) 315 struct buf *bp; 316 { 317 if (bp->b_bcount != XDFM_BPS) 318 panic("xddummystrat"); 319 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 320 bp->b_flags |= B_DONE; 321 bp->b_flags &= ~B_BUSY; 322 } 323 324 int 325 xdgetdisklabel(xd, b) 326 struct xd_softc *xd; 327 void *b; 328 { 329 char *err; 330 #if defined(__sparc__) || defined(sun3) 331 struct sun_disklabel *sdl; 332 #endif 333 334 /* We already have the label data in `b'; setup for dummy strategy */ 335 xd_labeldata = b; 336 337 /* Required parameter for readdisklabel() */ 338 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 339 340 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 341 xddummystrat, 342 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 343 if (err) { 344 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 345 return(XD_ERR_FAIL); 346 } 347 348 #if defined(__sparc__) || defined(sun3) 349 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 350 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 351 if (sdl->sl_magic == SUN_DKMAGIC) { 352 xd->pcyl = sdl->sl_pcylinders; 353 } else 354 #endif 355 { 356 printf("%s: WARNING: no `pcyl' in disk label.\n", 357 xd->sc_dev.dv_xname); 358 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 359 xd->sc_dk.dk_label->d_acylinders; 360 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 361 xd->sc_dev.dv_xname, xd->pcyl); 362 } 363 364 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 365 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 366 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 367 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 368 xd->sectpercyl = xd->nhead * xd->nsect; 369 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 370 * sun->bsd */ 371 return(XD_ERR_AOK); 372 } 373 374 /* 375 * end: disk label fix code (XXX) 376 */ 377 378 /* 379 * Shorthand for allocating, mapping and loading a DMA buffer 380 */ 381 int 382 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 383 bus_dma_tag_t tag; 384 bus_dmamap_t map; 385 bus_dma_segment_t *seg; 386 int *nsegp; 387 bus_size_t len; 388 caddr_t *kvap; 389 bus_addr_t *dmap; 390 { 391 int nseg; 392 int error; 393 394 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 395 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 396 return (error); 397 } 398 399 if ((error = bus_dmamem_map(tag, seg, nseg, 400 len, kvap, 401 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 402 bus_dmamem_free(tag, seg, nseg); 403 return (error); 404 } 405 406 if ((error = bus_dmamap_load(tag, map, 407 *kvap, len, NULL, 408 BUS_DMA_NOWAIT)) != 0) { 409 bus_dmamem_unmap(tag, *kvap, len); 410 bus_dmamem_free(tag, seg, nseg); 411 return (error); 412 } 413 414 *dmap = map->dm_segs[0].ds_addr; 415 *nsegp = nseg; 416 return (0); 417 } 418 419 void 420 xd_dmamem_free(tag, map, seg, nseg, len, kva) 421 bus_dma_tag_t tag; 422 bus_dmamap_t map; 423 bus_dma_segment_t *seg; 424 int nseg; 425 bus_size_t len; 426 caddr_t kva; 427 { 428 429 bus_dmamap_unload(tag, map); 430 bus_dmamem_unmap(tag, kva, len); 431 bus_dmamem_free(tag, seg, nseg); 432 } 433 434 435 /* 436 * a u t o c o n f i g f u n c t i o n s 437 */ 438 439 /* 440 * xdcmatch: determine if xdc is present or not. we do a 441 * soft reset to detect the xdc. 442 */ 443 444 int 445 xdc_probe(arg, tag, handle) 446 void *arg; 447 bus_space_tag_t tag; 448 bus_space_handle_t handle; 449 { 450 struct xdc *xdc = (void *)handle; /* XXX */ 451 int del = 0; 452 453 xdc->xdc_csr = XDC_RESET; 454 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 455 return (del > 0 ? 0 : EIO); 456 } 457 458 int xdcmatch(parent, cf, aux) 459 struct device *parent; 460 struct cfdata *cf; 461 void *aux; 462 { 463 struct vme_attach_args *va = aux; 464 vme_chipset_tag_t ct = va->va_vct; 465 vme_am_t mod; 466 int error; 467 468 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 469 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 470 return (0); 471 472 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 473 mod, VME_D32, xdc_probe, 0); 474 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 475 476 return (error == 0); 477 } 478 479 /* 480 * xdcattach: attach controller 481 */ 482 void 483 xdcattach(parent, self, aux) 484 struct device *parent, *self; 485 void *aux; 486 487 { 488 struct vme_attach_args *va = aux; 489 vme_chipset_tag_t ct = va->va_vct; 490 bus_space_tag_t bt; 491 bus_space_handle_t bh; 492 vme_intr_handle_t ih; 493 vme_am_t mod; 494 struct xdc_softc *xdc = (void *) self; 495 struct xdc_attach_args xa; 496 int lcv, rqno, error; 497 struct xd_iopb_ctrl *ctl; 498 bus_dma_segment_t seg; 499 int rseg; 500 vme_mapresc_t resc; 501 502 xdc_md_setup(); 503 504 /* get addressing and intr level stuff from autoconfig and load it 505 * into our xdc_softc. */ 506 507 xdc->dmatag = va->va_bdt; 508 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 509 510 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 511 panic("xdc: vme alloc"); 512 513 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 514 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 515 panic("xdc: vme_map"); 516 517 xdc->xdc = (struct xdc *) bh; /* XXX */ 518 xdc->ipl = va->ilevel; 519 xdc->vector = va->ivector; 520 521 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 522 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 523 524 /* 525 * allocate and zero buffers 526 * 527 * note: we simplify the code by allocating the max number of iopbs and 528 * iorq's up front. thus, we avoid linked lists and the costs 529 * associated with them in exchange for wasting a little memory. 530 */ 531 532 /* Get DMA handle for misc. transfers */ 533 if ((error = vme_dmamap_create( 534 ct, /* VME chip tag */ 535 MAXPHYS, /* size */ 536 VME_AM_A24, /* address modifier */ 537 VME_D32, /* data size */ 538 0, /* swap */ 539 1, /* nsegments */ 540 MAXPHYS, /* maxsegsz */ 541 0, /* boundary */ 542 BUS_DMA_NOWAIT, 543 &xdc->auxmap)) != 0) { 544 545 printf("%s: DMA buffer map create error %d\n", 546 xdc->sc_dev.dv_xname, error); 547 return; 548 } 549 550 551 /* Get DMA handle for mapping iorq descriptors */ 552 if ((error = vme_dmamap_create( 553 ct, /* VME chip tag */ 554 XDC_MAXIOPB * sizeof(struct xd_iopb), 555 VME_AM_A24, /* address modifier */ 556 VME_D32, /* data size */ 557 0, /* swap */ 558 1, /* nsegments */ 559 XDC_MAXIOPB * sizeof(struct xd_iopb), 560 0, /* boundary */ 561 BUS_DMA_NOWAIT, 562 &xdc->iopmap)) != 0) { 563 564 printf("%s: DMA buffer map create error %d\n", 565 xdc->sc_dev.dv_xname, error); 566 return; 567 } 568 569 /* Get DMA buffer for iorq descriptors */ 570 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 571 XDC_MAXIOPB * sizeof(struct xd_iopb), 572 (caddr_t *)&xdc->iopbase, 573 (bus_addr_t *)&xdc->dvmaiopb)) != 0) { 574 printf("%s: DMA buffer alloc error %d\n", 575 xdc->sc_dev.dv_xname, error); 576 return; 577 } 578 579 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 580 581 xdc->reqs = (struct xd_iorq *) 582 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 583 M_DEVBUF, M_NOWAIT|M_ZERO); 584 if (xdc->reqs == NULL) 585 panic("xdc malloc"); 586 587 /* init free list, iorq to iopb pointers, and non-zero fields in the 588 * iopb which never change. */ 589 590 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 591 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 592 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 593 xdc->freereq[lcv] = lcv; 594 xdc->iopbase[lcv].fixd = 1; /* always the same */ 595 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 596 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 597 598 if ((error = vme_dmamap_create( 599 ct, /* VME chip tag */ 600 MAXPHYS, /* size */ 601 VME_AM_A24, /* address modifier */ 602 VME_D32, /* data size */ 603 0, /* swap */ 604 1, /* nsegments */ 605 MAXPHYS, /* maxsegsz */ 606 0, /* boundary */ 607 BUS_DMA_NOWAIT, 608 &xdc->reqs[lcv].dmamap)) != 0) { 609 610 printf("%s: DMA buffer map create error %d\n", 611 xdc->sc_dev.dv_xname, error); 612 return; 613 } 614 } 615 xdc->nfree = XDC_MAXIOPB; 616 xdc->nrun = 0; 617 xdc->waithead = xdc->waitend = xdc->nwait = 0; 618 xdc->ndone = 0; 619 620 /* init queue of waiting bufs */ 621 622 BUFQ_INIT(&xdc->sc_wq); 623 callout_init(&xdc->sc_tick_ch); 624 625 /* 626 * section 7 of the manual tells us how to init the controller: 627 * - read controller parameters (6/0) 628 * - write controller parameters (5/0) 629 */ 630 631 /* read controller parameters and insure we have a 753/7053 */ 632 633 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 634 if (rqno == XD_ERR_FAIL) { 635 printf(": couldn't read controller params\n"); 636 return; /* shouldn't ever happen */ 637 } 638 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 639 if (ctl->ctype != XDCT_753) { 640 if (xdc->reqs[rqno].errno) 641 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 642 printf(": doesn't identify as a 753/7053\n"); 643 XDC_DONE(xdc, rqno, error); 644 return; 645 } 646 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 647 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 648 XDC_DONE(xdc, rqno, error); 649 650 /* now write controller parameters (xdc_cmd sets all params for us) */ 651 652 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 653 XDC_DONE(xdc, rqno, error); 654 if (error) { 655 printf("%s: controller config error: %s\n", 656 xdc->sc_dev.dv_xname, xdc_e2str(error)); 657 return; 658 } 659 660 /* link in interrupt with higher level software */ 661 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 662 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 663 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 664 xdc->sc_dev.dv_xname, "intr"); 665 666 667 /* now we must look for disks using autoconfig */ 668 xa.fullmode = XD_SUB_POLL; 669 xa.booting = 1; 670 671 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 672 (void) config_found(self, (void *) &xa, NULL); 673 674 /* start the watchdog clock */ 675 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 676 677 } 678 679 /* 680 * xdmatch: probe for disk. 681 * 682 * note: we almost always say disk is present. this allows us to 683 * spin up and configure a disk after the system is booted (we can 684 * call xdattach!). 685 */ 686 int 687 xdmatch(parent, cf, aux) 688 struct device *parent; 689 struct cfdata *cf; 690 void *aux; 691 { 692 struct xdc_attach_args *xa = aux; 693 694 /* looking for autoconf wildcard or exact match */ 695 696 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 697 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 698 return 0; 699 700 return 1; 701 702 } 703 704 /* 705 * xdattach: attach a disk. this can be called from autoconf and also 706 * from xdopen/xdstrategy. 707 */ 708 void 709 xdattach(parent, self, aux) 710 struct device *parent, *self; 711 void *aux; 712 713 { 714 struct xd_softc *xd = (void *) self; 715 struct xdc_softc *xdc = (void *) parent; 716 struct xdc_attach_args *xa = aux; 717 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 718 struct xd_iopb_drive *driopb; 719 struct dkbad *dkb; 720 int rseg, error; 721 bus_dma_segment_t seg; 722 caddr_t dmaddr; 723 caddr_t buf; 724 725 /* 726 * Always re-initialize the disk structure. We want statistics 727 * to start with a clean slate. 728 */ 729 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 730 xd->sc_dk.dk_driver = &xddkdriver; 731 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 732 733 /* if booting, init the xd_softc */ 734 735 if (xa->booting) { 736 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 737 xd->flags = 0; 738 xd->parent = xdc; 739 } 740 xd->xd_drive = xa->driveno; 741 fmode = xa->fullmode; 742 xdc->sc_drives[xa->driveno] = xd; 743 744 /* if not booting, make sure we are the only process in the attach for 745 * this drive. if locked out, sleep on it. */ 746 747 if (!xa->booting) { 748 s = splbio(); 749 while (xd->state == XD_DRIVE_ATTACHING) { 750 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 751 splx(s); 752 return; 753 } 754 } 755 printf("%s at %s", 756 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 757 } 758 759 /* we now have control */ 760 xd->state = XD_DRIVE_ATTACHING; 761 newstate = XD_DRIVE_UNKNOWN; 762 763 buf = NULL; 764 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 765 XDFM_BPS, 766 (caddr_t *)&buf, 767 (bus_addr_t *)&dmaddr)) != 0) { 768 printf("%s: DMA buffer alloc error %d\n", 769 xdc->sc_dev.dv_xname, error); 770 return; 771 } 772 773 /* first try and reset the drive */ 774 775 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 776 XDC_DONE(xdc, rqno, error); 777 if (error == XD_ERR_NRDY) { 778 printf(" drive %d: off-line\n", xa->driveno); 779 goto done; 780 } 781 if (error) { 782 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 783 goto done; 784 } 785 printf(" drive %d: ready\n", xa->driveno); 786 787 /* now set format parameters */ 788 789 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 790 XDC_DONE(xdc, rqno, error); 791 if (error) { 792 printf("%s: write format parameters failed: %s\n", 793 xd->sc_dev.dv_xname, xdc_e2str(error)); 794 goto done; 795 } 796 797 /* get drive parameters */ 798 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 799 if (rqno != XD_ERR_FAIL) { 800 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 801 spt = driopb->sectpertrk; 802 } 803 XDC_DONE(xdc, rqno, error); 804 if (error) { 805 printf("%s: read drive parameters failed: %s\n", 806 xd->sc_dev.dv_xname, xdc_e2str(error)); 807 goto done; 808 } 809 810 /* 811 * now set drive parameters (to semi-bogus values) so we can read the 812 * disk label. 813 */ 814 xd->pcyl = xd->ncyl = 1; 815 xd->acyl = 0; 816 xd->nhead = 1; 817 xd->nsect = 1; 818 xd->sectpercyl = 1; 819 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 820 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 821 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 822 XDC_DONE(xdc, rqno, error); 823 if (error) { 824 printf("%s: write drive parameters failed: %s\n", 825 xd->sc_dev.dv_xname, xdc_e2str(error)); 826 goto done; 827 } 828 829 /* read disk label */ 830 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 831 XDC_DONE(xdc, rqno, error); 832 if (error) { 833 printf("%s: reading disk label failed: %s\n", 834 xd->sc_dev.dv_xname, xdc_e2str(error)); 835 goto done; 836 } 837 newstate = XD_DRIVE_NOLABEL; 838 839 xd->hw_spt = spt; 840 /* Attach the disk: must be before getdisklabel to malloc label */ 841 disk_attach(&xd->sc_dk); 842 843 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 844 goto done; 845 846 /* inform the user of what is up */ 847 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 848 buf, xd->pcyl, spt); 849 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 850 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 851 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 852 XDFM_BPS); 853 854 /* now set the real drive parameters! */ 855 856 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 857 XDC_DONE(xdc, rqno, error); 858 if (error) { 859 printf("%s: write real drive parameters failed: %s\n", 860 xd->sc_dev.dv_xname, xdc_e2str(error)); 861 goto done; 862 } 863 newstate = XD_DRIVE_ONLINE; 864 865 /* 866 * read bad144 table. this table resides on the first sector of the 867 * last track of the disk (i.e. second cyl of "acyl" area). 868 */ 869 870 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 871 (xd->nhead - 1) * xd->nsect; /* last head */ 872 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 873 XDC_DONE(xdc, rqno, error); 874 if (error) { 875 printf("%s: reading bad144 failed: %s\n", 876 xd->sc_dev.dv_xname, xdc_e2str(error)); 877 goto done; 878 } 879 880 /* check dkbad for sanity */ 881 dkb = (struct dkbad *) buf; 882 for (lcv = 0; lcv < 126; lcv++) { 883 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 884 dkb->bt_bad[lcv].bt_cyl == 0) && 885 dkb->bt_bad[lcv].bt_trksec == 0xffff) 886 continue; /* blank */ 887 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 888 break; 889 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 890 break; 891 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 892 break; 893 } 894 if (lcv != 126) { 895 printf("%s: warning: invalid bad144 sector!\n", 896 xd->sc_dev.dv_xname); 897 } else { 898 bcopy(buf, &xd->dkb, XDFM_BPS); 899 } 900 901 done: 902 if (buf != NULL) { 903 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 904 &seg, rseg, XDFM_BPS, buf); 905 } 906 907 xd->state = newstate; 908 if (!xa->booting) { 909 wakeup(&xd->state); 910 splx(s); 911 } 912 } 913 914 /* 915 * end of autoconfig functions 916 */ 917 918 /* 919 * { b , c } d e v s w f u n c t i o n s 920 */ 921 922 /* 923 * xdclose: close device 924 */ 925 int 926 xdclose(dev, flag, fmt, p) 927 dev_t dev; 928 int flag, fmt; 929 struct proc *p; 930 { 931 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 932 int part = DISKPART(dev); 933 934 /* clear mask bits */ 935 936 switch (fmt) { 937 case S_IFCHR: 938 xd->sc_dk.dk_copenmask &= ~(1 << part); 939 break; 940 case S_IFBLK: 941 xd->sc_dk.dk_bopenmask &= ~(1 << part); 942 break; 943 } 944 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 945 946 return 0; 947 } 948 949 /* 950 * xddump: crash dump system 951 */ 952 int 953 xddump(dev, blkno, va, size) 954 dev_t dev; 955 daddr_t blkno; 956 caddr_t va; 957 size_t size; 958 { 959 int unit, part; 960 struct xd_softc *xd; 961 962 unit = DISKUNIT(dev); 963 if (unit >= xd_cd.cd_ndevs) 964 return ENXIO; 965 part = DISKPART(dev); 966 967 xd = xd_cd.cd_devs[unit]; 968 969 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 970 'a' + part); 971 972 return ENXIO; 973 974 /* outline: globals: "dumplo" == sector number of partition to start 975 * dump at (convert to physical sector with partition table) 976 * "dumpsize" == size of dump in clicks "physmem" == size of physical 977 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 978 * physmem) 979 * 980 * dump a copy of physical memory to the dump device starting at sector 981 * "dumplo" in the swap partition (make sure > 0). map in pages as 982 * we go. use polled I/O. 983 * 984 * XXX how to handle NON_CONTIG? */ 985 986 } 987 988 /* 989 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 990 */ 991 int 992 xdioctl(dev, command, addr, flag, p) 993 dev_t dev; 994 u_long command; 995 caddr_t addr; 996 int flag; 997 struct proc *p; 998 999 { 1000 struct xd_softc *xd; 1001 struct xd_iocmd *xio; 1002 int error, s, unit; 1003 #ifdef __HAVE_OLD_DISKLABEL 1004 struct disklabel newlabel; 1005 #endif 1006 struct disklabel *lp; 1007 1008 unit = DISKUNIT(dev); 1009 1010 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1011 return (ENXIO); 1012 1013 /* switch on ioctl type */ 1014 1015 switch (command) { 1016 case DIOCSBAD: /* set bad144 info */ 1017 if ((flag & FWRITE) == 0) 1018 return EBADF; 1019 s = splbio(); 1020 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1021 splx(s); 1022 return 0; 1023 1024 case DIOCGDINFO: /* get disk label */ 1025 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1026 return 0; 1027 #ifdef __HAVE_OLD_DISKLABEL 1028 case ODIOCGDINFO: 1029 newlabel = *(xd->sc_dk.dk_label); 1030 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1031 return ENOTTY; 1032 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1033 return 0; 1034 #endif 1035 1036 case DIOCGPART: /* get partition info */ 1037 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1038 ((struct partinfo *) addr)->part = 1039 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1040 return 0; 1041 1042 case DIOCSDINFO: /* set disk label */ 1043 #ifdef __HAVE_OLD_DISKLABEL 1044 case ODIOCSDINFO: 1045 if (command == ODIOCSDINFO) { 1046 memset(&newlabel, 0, sizeof newlabel); 1047 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1048 lp = &newlabel; 1049 } else 1050 #endif 1051 lp = (struct disklabel *)addr; 1052 1053 if ((flag & FWRITE) == 0) 1054 return EBADF; 1055 error = setdisklabel(xd->sc_dk.dk_label, 1056 lp, /* xd->sc_dk.dk_openmask : */ 0, 1057 xd->sc_dk.dk_cpulabel); 1058 if (error == 0) { 1059 if (xd->state == XD_DRIVE_NOLABEL) 1060 xd->state = XD_DRIVE_ONLINE; 1061 } 1062 return error; 1063 1064 case DIOCWLABEL: /* change write status of disk label */ 1065 if ((flag & FWRITE) == 0) 1066 return EBADF; 1067 if (*(int *) addr) 1068 xd->flags |= XD_WLABEL; 1069 else 1070 xd->flags &= ~XD_WLABEL; 1071 return 0; 1072 1073 case DIOCWDINFO: /* write disk label */ 1074 #ifdef __HAVE_OLD_DISKLABEL 1075 case ODIOCWDINFO: 1076 if (command == ODIOCWDINFO) { 1077 memset(&newlabel, 0, sizeof newlabel); 1078 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1079 lp = &newlabel; 1080 } else 1081 #endif 1082 lp = (struct disklabel *)addr; 1083 1084 if ((flag & FWRITE) == 0) 1085 return EBADF; 1086 error = setdisklabel(xd->sc_dk.dk_label, 1087 lp, /* xd->sc_dk.dk_openmask : */ 0, 1088 xd->sc_dk.dk_cpulabel); 1089 if (error == 0) { 1090 if (xd->state == XD_DRIVE_NOLABEL) 1091 xd->state = XD_DRIVE_ONLINE; 1092 1093 /* Simulate opening partition 0 so write succeeds. */ 1094 xd->sc_dk.dk_openmask |= (1 << 0); 1095 error = writedisklabel(MAKEDISKDEV(major(dev), 1096 DISKUNIT(dev), RAW_PART), 1097 xdstrategy, xd->sc_dk.dk_label, 1098 xd->sc_dk.dk_cpulabel); 1099 xd->sc_dk.dk_openmask = 1100 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1101 } 1102 return error; 1103 1104 case DIOSXDCMD: 1105 xio = (struct xd_iocmd *) addr; 1106 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1107 return (error); 1108 return (xdc_ioctlcmd(xd, dev, xio)); 1109 1110 default: 1111 return ENOTTY; 1112 } 1113 } 1114 /* 1115 * xdopen: open drive 1116 */ 1117 1118 int 1119 xdopen(dev, flag, fmt, p) 1120 dev_t dev; 1121 int flag, fmt; 1122 struct proc *p; 1123 { 1124 int unit, part; 1125 struct xd_softc *xd; 1126 struct xdc_attach_args xa; 1127 1128 /* first, could it be a valid target? */ 1129 1130 unit = DISKUNIT(dev); 1131 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1132 return (ENXIO); 1133 part = DISKPART(dev); 1134 1135 /* do we need to attach the drive? */ 1136 1137 if (xd->state == XD_DRIVE_UNKNOWN) { 1138 xa.driveno = xd->xd_drive; 1139 xa.fullmode = XD_SUB_WAIT; 1140 xa.booting = 0; 1141 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1142 if (xd->state == XD_DRIVE_UNKNOWN) { 1143 return (EIO); 1144 } 1145 } 1146 /* check for partition */ 1147 1148 if (part != RAW_PART && 1149 (part >= xd->sc_dk.dk_label->d_npartitions || 1150 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1151 return (ENXIO); 1152 } 1153 /* set open masks */ 1154 1155 switch (fmt) { 1156 case S_IFCHR: 1157 xd->sc_dk.dk_copenmask |= (1 << part); 1158 break; 1159 case S_IFBLK: 1160 xd->sc_dk.dk_bopenmask |= (1 << part); 1161 break; 1162 } 1163 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1164 1165 return 0; 1166 } 1167 1168 int 1169 xdread(dev, uio, flags) 1170 dev_t dev; 1171 struct uio *uio; 1172 int flags; 1173 { 1174 1175 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1176 } 1177 1178 int 1179 xdwrite(dev, uio, flags) 1180 dev_t dev; 1181 struct uio *uio; 1182 int flags; 1183 { 1184 1185 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1186 } 1187 1188 1189 /* 1190 * xdsize: return size of a partition for a dump 1191 */ 1192 1193 int 1194 xdsize(dev) 1195 dev_t dev; 1196 1197 { 1198 struct xd_softc *xdsc; 1199 int unit, part, size, omask; 1200 1201 /* valid unit? */ 1202 unit = DISKUNIT(dev); 1203 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1204 return (-1); 1205 1206 part = DISKPART(dev); 1207 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1208 1209 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1210 return (-1); 1211 1212 /* do it */ 1213 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1214 size = -1; /* only give valid size for swap partitions */ 1215 else 1216 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1217 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1218 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1219 return (-1); 1220 return (size); 1221 } 1222 /* 1223 * xdstrategy: buffering system interface to xd. 1224 */ 1225 1226 void 1227 xdstrategy(bp) 1228 struct buf *bp; 1229 1230 { 1231 struct xd_softc *xd; 1232 struct xdc_softc *parent; 1233 int s, unit; 1234 struct xdc_attach_args xa; 1235 1236 unit = DISKUNIT(bp->b_dev); 1237 1238 /* check for live device */ 1239 1240 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1241 bp->b_blkno < 0 || 1242 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1243 bp->b_error = EINVAL; 1244 goto bad; 1245 } 1246 /* do we need to attach the drive? */ 1247 1248 if (xd->state == XD_DRIVE_UNKNOWN) { 1249 xa.driveno = xd->xd_drive; 1250 xa.fullmode = XD_SUB_WAIT; 1251 xa.booting = 0; 1252 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1253 if (xd->state == XD_DRIVE_UNKNOWN) { 1254 bp->b_error = EIO; 1255 goto bad; 1256 } 1257 } 1258 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1259 /* no I/O to unlabeled disks, unless raw partition */ 1260 bp->b_error = EIO; 1261 goto bad; 1262 } 1263 /* short circuit zero length request */ 1264 1265 if (bp->b_bcount == 0) 1266 goto done; 1267 1268 /* check bounds with label (disksubr.c). Determine the size of the 1269 * transfer, and make sure it is within the boundaries of the 1270 * partition. Adjust transfer if needed, and signal errors or early 1271 * completion. */ 1272 1273 if (bounds_check_with_label(bp, xd->sc_dk.dk_label, 1274 (xd->flags & XD_WLABEL) != 0) <= 0) 1275 goto done; 1276 1277 /* 1278 * now we know we have a valid buf structure that we need to do I/O 1279 * on. 1280 * 1281 * note that we don't disksort because the controller has a sorting 1282 * algorithm built into the hardware. 1283 */ 1284 1285 s = splbio(); /* protect the queues */ 1286 1287 /* first, give jobs in front of us a chance */ 1288 parent = xd->parent; 1289 while (parent->nfree > 0 && BUFQ_FIRST(&parent->sc_wq) != NULL) 1290 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1291 break; 1292 1293 /* if there are no free iorq's, then we just queue and return. the 1294 * buffs will get picked up later by xdcintr(). 1295 */ 1296 1297 if (parent->nfree == 0) { 1298 BUFQ_INSERT_TAIL(&parent->sc_wq, bp); 1299 splx(s); 1300 return; 1301 } 1302 1303 /* now we have free iopb's and we are at splbio... start 'em up */ 1304 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1305 return; 1306 } 1307 1308 /* done! */ 1309 1310 splx(s); 1311 return; 1312 1313 bad: /* tells upper layers we have an error */ 1314 bp->b_flags |= B_ERROR; 1315 done: /* tells upper layers we are done with this 1316 * buf */ 1317 bp->b_resid = bp->b_bcount; 1318 biodone(bp); 1319 } 1320 /* 1321 * end of {b,c}devsw functions 1322 */ 1323 1324 /* 1325 * i n t e r r u p t f u n c t i o n 1326 * 1327 * xdcintr: hardware interrupt. 1328 */ 1329 int 1330 xdcintr(v) 1331 void *v; 1332 1333 { 1334 struct xdc_softc *xdcsc = v; 1335 1336 /* kick the event counter */ 1337 1338 xdcsc->sc_intrcnt.ev_count++; 1339 1340 /* remove as many done IOPBs as possible */ 1341 1342 xdc_remove_iorq(xdcsc); 1343 1344 /* start any iorq's already waiting */ 1345 1346 xdc_start(xdcsc, XDC_MAXIOPB); 1347 1348 /* fill up any remaining iorq's with queue'd buffers */ 1349 1350 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1351 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1352 break; 1353 1354 return (1); 1355 } 1356 /* 1357 * end of interrupt function 1358 */ 1359 1360 /* 1361 * i n t e r n a l f u n c t i o n s 1362 */ 1363 1364 /* 1365 * xdc_rqinit: fill out the fields of an I/O request 1366 */ 1367 1368 inline void 1369 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1370 struct xd_iorq *rq; 1371 struct xdc_softc *xdc; 1372 struct xd_softc *xd; 1373 int md; 1374 u_long blk; 1375 int cnt; 1376 caddr_t db; 1377 struct buf *bp; 1378 { 1379 rq->xdc = xdc; 1380 rq->xd = xd; 1381 rq->ttl = XDC_MAXTTL + 10; 1382 rq->mode = md; 1383 rq->tries = rq->errno = rq->lasterror = 0; 1384 rq->blockno = blk; 1385 rq->sectcnt = cnt; 1386 rq->dbuf = db; 1387 rq->buf = bp; 1388 } 1389 /* 1390 * xdc_rqtopb: load up an IOPB based on an iorq 1391 */ 1392 1393 void 1394 xdc_rqtopb(iorq, iopb, cmd, subfun) 1395 struct xd_iorq *iorq; 1396 struct xd_iopb *iopb; 1397 int cmd, subfun; 1398 1399 { 1400 u_long block, dp; 1401 1402 /* standard stuff */ 1403 1404 iopb->errs = iopb->done = 0; 1405 iopb->comm = cmd; 1406 iopb->errno = iopb->status = 0; 1407 iopb->subfun = subfun; 1408 if (iorq->xd) 1409 iopb->unit = iorq->xd->xd_drive; 1410 else 1411 iopb->unit = 0; 1412 1413 /* check for alternate IOPB format */ 1414 1415 if (cmd == XDCMD_WRP) { 1416 switch (subfun) { 1417 case XDFUN_CTL:{ 1418 struct xd_iopb_ctrl *ctrl = 1419 (struct xd_iopb_ctrl *) iopb; 1420 iopb->lll = 0; 1421 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1422 ? 0 1423 : iorq->xdc->ipl; 1424 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1425 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1426 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1427 XDPC_RBC | XDPC_ECC2; 1428 ctrl->throttle = XDC_THROTTLE; 1429 ctrl->delay = XDC_DELAY; 1430 break; 1431 } 1432 case XDFUN_DRV:{ 1433 struct xd_iopb_drive *drv = 1434 (struct xd_iopb_drive *)iopb; 1435 /* we assume that the disk label has the right 1436 * info */ 1437 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1438 drv->dparam_ipl = (XDC_DPARAM << 3); 1439 else 1440 drv->dparam_ipl = (XDC_DPARAM << 3) | 1441 iorq->xdc->ipl; 1442 drv->maxsect = iorq->xd->nsect - 1; 1443 drv->maxsector = drv->maxsect; 1444 /* note: maxsector != maxsect only if you are 1445 * doing cyl sparing */ 1446 drv->headoff = 0; 1447 drv->maxcyl = iorq->xd->pcyl - 1; 1448 drv->maxhead = iorq->xd->nhead - 1; 1449 break; 1450 } 1451 case XDFUN_FMT:{ 1452 struct xd_iopb_format *form = 1453 (struct xd_iopb_format *) iopb; 1454 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1455 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1456 else 1457 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1458 iorq->xdc->ipl; 1459 form->field1 = XDFM_FIELD1; 1460 form->field2 = XDFM_FIELD2; 1461 form->field3 = XDFM_FIELD3; 1462 form->field4 = XDFM_FIELD4; 1463 form->bytespersec = XDFM_BPS; 1464 form->field6 = XDFM_FIELD6; 1465 form->field7 = XDFM_FIELD7; 1466 break; 1467 } 1468 } 1469 } else { 1470 1471 /* normal IOPB case (harmless to RDP command) */ 1472 1473 iopb->lll = 0; 1474 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1475 ? 0 1476 : iorq->xdc->ipl; 1477 iopb->sectcnt = iorq->sectcnt; 1478 block = iorq->blockno; 1479 if (iorq->xd == NULL || block == 0) { 1480 iopb->sectno = iopb->headno = iopb->cylno = 0; 1481 } else { 1482 iopb->sectno = block % iorq->xd->nsect; 1483 block = block / iorq->xd->nsect; 1484 iopb->headno = block % iorq->xd->nhead; 1485 block = block / iorq->xd->nhead; 1486 iopb->cylno = block; 1487 } 1488 dp = (u_long) iorq->dbuf; 1489 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1490 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1491 ? XDC_ADDRMOD32 1492 : XDC_ADDRMOD; 1493 } 1494 } 1495 1496 /* 1497 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1498 * If you've already got an IORQ, you can call submit directly (currently 1499 * there is no need to do this). NORM requests are handled separately. 1500 */ 1501 int 1502 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1503 struct xdc_softc *xdcsc; 1504 int cmd, subfn, unit, block, scnt; 1505 char *dptr; 1506 int fullmode; 1507 1508 { 1509 int rqno, submode = XD_STATE(fullmode), retry; 1510 struct xd_iorq *iorq; 1511 struct xd_iopb *iopb; 1512 1513 /* get iorq/iopb */ 1514 switch (submode) { 1515 case XD_SUB_POLL: 1516 while (xdcsc->nfree == 0) { 1517 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1518 return (XD_ERR_FAIL); 1519 } 1520 break; 1521 case XD_SUB_WAIT: 1522 retry = 1; 1523 while (retry) { 1524 while (xdcsc->nfree == 0) { 1525 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1526 return (XD_ERR_FAIL); 1527 } 1528 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1529 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1530 return (XD_ERR_FAIL); 1531 } 1532 if (xdcsc->nfree) 1533 retry = 0; /* got it */ 1534 } 1535 break; 1536 default: 1537 return (XD_ERR_FAIL); /* illegal */ 1538 } 1539 if (xdcsc->nfree == 0) 1540 panic("xdcmd nfree"); 1541 rqno = XDC_RQALLOC(xdcsc); 1542 iorq = &xdcsc->reqs[rqno]; 1543 iopb = iorq->iopb; 1544 1545 1546 /* init iorq/iopb */ 1547 1548 xdc_rqinit(iorq, xdcsc, 1549 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1550 fullmode, block, scnt, dptr, NULL); 1551 1552 /* load IOPB from iorq */ 1553 1554 xdc_rqtopb(iorq, iopb, cmd, subfn); 1555 1556 /* submit it for processing */ 1557 1558 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1559 1560 return (rqno); 1561 } 1562 /* 1563 * xdc_startbuf 1564 * start a buffer running, assumes nfree > 0 1565 */ 1566 1567 int 1568 xdc_startbuf(xdcsc, xdsc, bp) 1569 struct xdc_softc *xdcsc; 1570 struct xd_softc *xdsc; 1571 struct buf *bp; 1572 1573 { 1574 int rqno, partno; 1575 struct xd_iorq *iorq; 1576 struct xd_iopb *iopb; 1577 u_long block; 1578 /* caddr_t dbuf;*/ 1579 int error; 1580 1581 if (!xdcsc->nfree) 1582 panic("xdc_startbuf free"); 1583 rqno = XDC_RQALLOC(xdcsc); 1584 iorq = &xdcsc->reqs[rqno]; 1585 iopb = iorq->iopb; 1586 1587 /* get buf */ 1588 1589 if (bp == NULL) { 1590 bp = BUFQ_FIRST(&xdcsc->sc_wq); 1591 if (bp == NULL) 1592 panic("xdc_startbuf bp"); 1593 BUFQ_REMOVE(&xdcsc->sc_wq, bp); 1594 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1595 } 1596 partno = DISKPART(bp->b_dev); 1597 #ifdef XDC_DEBUG 1598 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1599 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1600 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1601 bp->b_bcount, bp->b_data); 1602 #endif 1603 1604 /* 1605 * load request. we have to calculate the correct block number based 1606 * on partition info. 1607 * 1608 * note that iorq points to the buffer as mapped into DVMA space, 1609 * where as the bp->b_data points to its non-DVMA mapping. 1610 */ 1611 1612 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1613 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1614 1615 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1616 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1617 if (error != 0) { 1618 printf("%s: warning: cannot load DMA map\n", 1619 xdcsc->sc_dev.dv_xname); 1620 XDC_FREE(xdcsc, rqno); 1621 BUFQ_INSERT_TAIL(&xdcsc->sc_wq, bp); 1622 return (XD_ERR_FAIL); /* XXX: need some sort of 1623 * call-back scheme here? */ 1624 } 1625 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1626 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1627 ? BUS_DMASYNC_PREREAD 1628 : BUS_DMASYNC_PREWRITE); 1629 1630 /* init iorq and load iopb from it */ 1631 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1632 bp->b_bcount / XDFM_BPS, 1633 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1634 bp); 1635 1636 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1637 1638 /* Instrumentation. */ 1639 disk_busy(&xdsc->sc_dk); 1640 1641 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1642 1643 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1644 return (XD_ERR_AOK); 1645 } 1646 1647 1648 /* 1649 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1650 * if ok. if it fail returns an error code. type is XD_SUB_*. 1651 * 1652 * note: caller frees iorq in all cases except NORM 1653 * 1654 * return value: 1655 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1656 * WAIT: XD_AOK (success), <error-code> (failed) 1657 * POLL: <same as WAIT> 1658 * NOQ : <same as NORM> 1659 * 1660 * there are three sources for i/o requests: 1661 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1662 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1663 * [3] open/ioctl: these are I/O requests done in the context of a process, 1664 * and the process should block until they are done. 1665 * 1666 * software state is stored in the iorq structure. each iorq has an 1667 * iopb structure. the hardware understands the iopb structure. 1668 * every command must go through an iopb. a 7053 can only handle 1669 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1670 * DVMA space at boot up time. what happens if we run out of iopb's? 1671 * for i/o type [1], the buffers are queued at the "buff" layer and 1672 * picked up later by the interrupt routine. for case [2] the 1673 * programmed i/o driver is called with a special flag that says 1674 * return when one iopb is free. for case [3] the process can sleep 1675 * on the iorq free list until some iopbs are avaliable. 1676 */ 1677 1678 1679 int 1680 xdc_submit_iorq(xdcsc, iorqno, type) 1681 struct xdc_softc *xdcsc; 1682 int iorqno; 1683 int type; 1684 1685 { 1686 u_long iopbaddr; 1687 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1688 1689 #ifdef XDC_DEBUG 1690 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1691 iorqno, type); 1692 #endif 1693 1694 /* first check and see if controller is busy */ 1695 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1696 #ifdef XDC_DEBUG 1697 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1698 #endif 1699 if (type == XD_SUB_NOQ) 1700 return (XD_ERR_FAIL); /* failed */ 1701 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1702 switch (type) { 1703 case XD_SUB_NORM: 1704 return XD_ERR_AOK; /* success */ 1705 case XD_SUB_WAIT: 1706 while (iorq->iopb->done == 0) { 1707 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1708 } 1709 return (iorq->errno); 1710 case XD_SUB_POLL: 1711 return (xdc_piodriver(xdcsc, iorqno, 0)); 1712 default: 1713 panic("xdc_submit_iorq adding"); 1714 } 1715 } 1716 #ifdef XDC_DEBUG 1717 { 1718 u_char *rio = (u_char *) iorq->iopb; 1719 int sz = sizeof(struct xd_iopb), lcv; 1720 printf("%s: aio #%d [", 1721 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1722 for (lcv = 0; lcv < sz; lcv++) 1723 printf(" %02x", rio[lcv]); 1724 printf("]\n"); 1725 } 1726 #endif /* XDC_DEBUG */ 1727 1728 /* controller not busy, start command */ 1729 iopbaddr = (u_long) iorq->dmaiopb; 1730 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1731 xdcsc->nrun++; 1732 /* command now running, wrap it up */ 1733 switch (type) { 1734 case XD_SUB_NORM: 1735 case XD_SUB_NOQ: 1736 return (XD_ERR_AOK); /* success */ 1737 case XD_SUB_WAIT: 1738 while (iorq->iopb->done == 0) { 1739 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1740 } 1741 return (iorq->errno); 1742 case XD_SUB_POLL: 1743 return (xdc_piodriver(xdcsc, iorqno, 0)); 1744 default: 1745 panic("xdc_submit_iorq wrap up"); 1746 } 1747 panic("xdc_submit_iorq"); 1748 return 0; /* not reached */ 1749 } 1750 1751 1752 /* 1753 * xdc_piodriver 1754 * 1755 * programmed i/o driver. this function takes over the computer 1756 * and drains off all i/o requests. it returns the status of the iorq 1757 * the caller is interesting in. if freeone is true, then it returns 1758 * when there is a free iorq. 1759 */ 1760 int 1761 xdc_piodriver(xdcsc, iorqno, freeone) 1762 struct xdc_softc *xdcsc; 1763 int iorqno; 1764 int freeone; 1765 1766 { 1767 int nreset = 0; 1768 int retval = 0; 1769 u_long count; 1770 struct xdc *xdc = xdcsc->xdc; 1771 #ifdef XDC_DEBUG 1772 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1773 iorqno, freeone); 1774 #endif 1775 1776 while (xdcsc->nwait || xdcsc->nrun) { 1777 #ifdef XDC_DEBUG 1778 printf("xdc_piodriver: wait=%d, run=%d\n", 1779 xdcsc->nwait, xdcsc->nrun); 1780 #endif 1781 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1782 #ifdef XDC_DEBUG 1783 printf("xdc_piodriver: done wait with count = %d\n", count); 1784 #endif 1785 /* we expect some progress soon */ 1786 if (count == 0 && nreset >= 2) { 1787 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1788 #ifdef XDC_DEBUG 1789 printf("xdc_piodriver: timeout\n"); 1790 #endif 1791 return (XD_ERR_FAIL); 1792 } 1793 if (count == 0) { 1794 if (xdc_reset(xdcsc, 0, 1795 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1796 XD_ERR_FAIL, 1797 0) == XD_ERR_FAIL) 1798 return (XD_ERR_FAIL); /* flushes all but POLL 1799 * requests, resets */ 1800 continue; 1801 } 1802 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1803 if (freeone) { 1804 if (xdcsc->nrun < XDC_MAXIOPB) { 1805 #ifdef XDC_DEBUG 1806 printf("xdc_piodriver: done: one free\n"); 1807 #endif 1808 return (XD_ERR_AOK); 1809 } 1810 continue; /* don't xdc_start */ 1811 } 1812 xdc_start(xdcsc, XDC_MAXIOPB); 1813 } 1814 1815 /* get return value */ 1816 1817 retval = xdcsc->reqs[iorqno].errno; 1818 1819 #ifdef XDC_DEBUG 1820 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1821 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1822 #endif 1823 1824 /* now that we've drained everything, start up any bufs that have 1825 * queued */ 1826 1827 while (xdcsc->nfree > 0 && BUFQ_FIRST(&xdcsc->sc_wq) != NULL) 1828 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1829 break; 1830 1831 return (retval); 1832 } 1833 1834 /* 1835 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1836 * we steal iopb[0] for this, but we put it back when we are done. 1837 */ 1838 void 1839 xdc_xdreset(xdcsc, xdsc) 1840 struct xdc_softc *xdcsc; 1841 struct xd_softc *xdsc; 1842 1843 { 1844 struct xd_iopb tmpiopb; 1845 u_long addr; 1846 int del; 1847 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1848 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1849 xdcsc->iopbase->comm = XDCMD_RST; 1850 xdcsc->iopbase->unit = xdsc->xd_drive; 1851 addr = (u_long) xdcsc->dvmaiopb; 1852 XDC_GO(xdcsc->xdc, addr); /* go! */ 1853 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1854 if (del <= 0 || xdcsc->iopbase->errs) { 1855 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1856 xdc_e2str(xdcsc->iopbase->errno)); 1857 xdcsc->xdc->xdc_csr = XDC_RESET; 1858 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1859 if (del <= 0) 1860 panic("xdc_reset"); 1861 } else { 1862 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1863 } 1864 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1865 } 1866 1867 1868 /* 1869 * xdc_reset: reset everything: requests are marked as errors except 1870 * a polled request (which is resubmitted) 1871 */ 1872 int 1873 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1874 struct xdc_softc *xdcsc; 1875 int quiet, blastmode, error; 1876 struct xd_softc *xdsc; 1877 1878 { 1879 int del = 0, lcv, retval = XD_ERR_AOK; 1880 int oldfree = xdcsc->nfree; 1881 1882 /* soft reset hardware */ 1883 1884 if (!quiet) 1885 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1886 xdcsc->xdc->xdc_csr = XDC_RESET; 1887 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1888 if (del <= 0) { 1889 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1890 retval = XD_ERR_FAIL; 1891 } 1892 if (xdsc) 1893 xdc_xdreset(xdcsc, xdsc); 1894 1895 /* fix queues based on "blast-mode" */ 1896 1897 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1898 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1899 1900 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1901 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1902 XD_STATE(iorq->mode) != XD_SUB_NORM) 1903 /* is it active? */ 1904 continue; 1905 1906 xdcsc->nrun--; /* it isn't running any more */ 1907 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1908 /* failed */ 1909 iorq->errno = error; 1910 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1911 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1912 case XD_SUB_NORM: 1913 iorq->buf->b_error = EIO; 1914 iorq->buf->b_flags |= B_ERROR; 1915 iorq->buf->b_resid = 1916 iorq->sectcnt * XDFM_BPS; 1917 1918 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1919 iorq->dmamap->dm_mapsize, 1920 (iorq->buf->b_flags & B_READ) 1921 ? BUS_DMASYNC_POSTREAD 1922 : BUS_DMASYNC_POSTWRITE); 1923 1924 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1925 1926 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1927 (xdcsc->reqs[lcv].buf->b_bcount - 1928 xdcsc->reqs[lcv].buf->b_resid)); 1929 biodone(iorq->buf); 1930 XDC_FREE(xdcsc, lcv); /* add to free list */ 1931 break; 1932 case XD_SUB_WAIT: 1933 wakeup(iorq); 1934 case XD_SUB_POLL: 1935 xdcsc->ndone++; 1936 iorq->mode = 1937 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1938 break; 1939 } 1940 1941 } else { 1942 1943 /* resubmit, put at front of wait queue */ 1944 XDC_HWAIT(xdcsc, lcv); 1945 } 1946 } 1947 1948 /* 1949 * now, if stuff is waiting, start it. 1950 * since we just reset it should go 1951 */ 1952 xdc_start(xdcsc, XDC_MAXIOPB); 1953 1954 /* ok, we did it */ 1955 if (oldfree == 0 && xdcsc->nfree) 1956 wakeup(&xdcsc->nfree); 1957 1958 #ifdef XDC_DIAG 1959 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1960 if (del != XDC_MAXIOPB) 1961 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1962 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1963 else 1964 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1965 printf("%s: diag: lots of done jobs (%d)\n", 1966 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1967 #endif 1968 printf("RESET DONE\n"); 1969 return (retval); 1970 } 1971 /* 1972 * xdc_start: start all waiting buffers 1973 */ 1974 1975 void 1976 xdc_start(xdcsc, maxio) 1977 struct xdc_softc *xdcsc; 1978 int maxio; 1979 1980 { 1981 int rqno; 1982 while (maxio && xdcsc->nwait && 1983 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1984 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1985 * param */ 1986 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1987 panic("xdc_start"); /* should never happen */ 1988 maxio--; 1989 } 1990 } 1991 /* 1992 * xdc_remove_iorq: remove "done" IOPB's. 1993 */ 1994 1995 int 1996 xdc_remove_iorq(xdcsc) 1997 struct xdc_softc *xdcsc; 1998 1999 { 2000 int errno, rqno, comm, errs; 2001 struct xdc *xdc = xdcsc->xdc; 2002 struct xd_iopb *iopb; 2003 struct xd_iorq *iorq; 2004 struct buf *bp; 2005 2006 if (xdc->xdc_csr & XDC_F_ERROR) { 2007 /* 2008 * FATAL ERROR: should never happen under normal use. This 2009 * error is so bad, you can't even tell which IOPB is bad, so 2010 * we dump them all. 2011 */ 2012 errno = xdc->xdc_f_err; 2013 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2014 errno, xdc_e2str(errno)); 2015 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2016 printf("%s: soft reset failed!\n", 2017 xdcsc->sc_dev.dv_xname); 2018 panic("xdc_remove_iorq: controller DEAD"); 2019 } 2020 return (XD_ERR_AOK); 2021 } 2022 2023 /* 2024 * get iopb that is done 2025 * 2026 * hmm... I used to read the address of the done IOPB off the VME 2027 * registers and calculate the rqno directly from that. that worked 2028 * until I started putting a load on the controller. when loaded, i 2029 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2030 * be set, even after DELAY'ing a while! later on the timeout 2031 * routine would detect IOPBs that were marked "running" but their 2032 * "done" bit was set. rather than dealing directly with this 2033 * problem, it is just easier to look at all running IOPB's for the 2034 * done bit. 2035 */ 2036 if (xdc->xdc_csr & XDC_REMIOPB) { 2037 xdc->xdc_csr = XDC_CLRRIO; 2038 } 2039 2040 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2041 iorq = &xdcsc->reqs[rqno]; 2042 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2043 continue; /* free, or done */ 2044 iopb = &xdcsc->iopbase[rqno]; 2045 if (iopb->done == 0) 2046 continue; /* not done yet */ 2047 2048 #ifdef XDC_DEBUG 2049 { 2050 u_char *rio = (u_char *) iopb; 2051 int sz = sizeof(struct xd_iopb), lcv; 2052 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2053 for (lcv = 0; lcv < sz; lcv++) 2054 printf(" %02x", rio[lcv]); 2055 printf("]\n"); 2056 } 2057 #endif /* XDC_DEBUG */ 2058 2059 xdcsc->nrun--; 2060 2061 comm = iopb->comm; 2062 errs = iopb->errs; 2063 2064 if (errs) 2065 iorq->errno = iopb->errno; 2066 else 2067 iorq->errno = 0; 2068 2069 /* handle non-fatal errors */ 2070 2071 if (errs && 2072 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2073 continue; /* AOK: we resubmitted it */ 2074 2075 2076 /* this iorq is now done (hasn't been restarted or anything) */ 2077 2078 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2079 xdc_perror(iorq, iopb, 0); 2080 2081 /* now, if read/write check to make sure we got all the data 2082 * we needed. (this may not be the case if we got an error in 2083 * the middle of a multisector request). */ 2084 2085 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2086 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2087 /* we just successfully processed a bad144 sector 2088 * note: if we are in bad 144 mode, the pointers have 2089 * been advanced already (see above) and are pointing 2090 * at the bad144 sector. to exit bad144 mode, we 2091 * must advance the pointers 1 sector and issue a new 2092 * request if there are still sectors left to process 2093 * 2094 */ 2095 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2096 2097 /* exit b144 mode */ 2098 iorq->mode = iorq->mode & (~XD_MODE_B144); 2099 2100 if (iorq->sectcnt) { /* more to go! */ 2101 iorq->lasterror = iorq->errno = iopb->errno = 0; 2102 iopb->errs = iopb->done = 0; 2103 iorq->tries = 0; 2104 iopb->sectcnt = iorq->sectcnt; 2105 iopb->cylno = iorq->blockno / 2106 iorq->xd->sectpercyl; 2107 iopb->headno = 2108 (iorq->blockno / iorq->xd->nhead) % 2109 iorq->xd->nhead; 2110 iopb->sectno = iorq->blockno % XDFM_BPS; 2111 iopb->daddr = (u_long) iorq->dbuf; 2112 XDC_HWAIT(xdcsc, rqno); 2113 xdc_start(xdcsc, 1); /* resubmit */ 2114 continue; 2115 } 2116 } 2117 /* final cleanup, totally done with this request */ 2118 2119 switch (XD_STATE(iorq->mode)) { 2120 case XD_SUB_NORM: 2121 bp = iorq->buf; 2122 if (errs) { 2123 bp->b_error = EIO; 2124 bp->b_flags |= B_ERROR; 2125 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2126 } else { 2127 bp->b_resid = 0; /* done */ 2128 } 2129 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2130 iorq->dmamap->dm_mapsize, 2131 (bp->b_flags & B_READ) 2132 ? BUS_DMASYNC_POSTREAD 2133 : BUS_DMASYNC_POSTWRITE); 2134 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2135 2136 disk_unbusy(&iorq->xd->sc_dk, 2137 (bp->b_bcount - bp->b_resid)); 2138 XDC_FREE(xdcsc, rqno); 2139 biodone(bp); 2140 break; 2141 case XD_SUB_WAIT: 2142 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2143 xdcsc->ndone++; 2144 wakeup(iorq); 2145 break; 2146 case XD_SUB_POLL: 2147 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2148 xdcsc->ndone++; 2149 break; 2150 } 2151 } 2152 2153 return (XD_ERR_AOK); 2154 } 2155 2156 /* 2157 * xdc_perror: print error. 2158 * - if still_trying is true: we got an error, retried and got a 2159 * different error. in that case lasterror is the old error, 2160 * and errno is the new one. 2161 * - if still_trying is not true, then if we ever had an error it 2162 * is in lasterror. also, if iorq->errno == 0, then we recovered 2163 * from that error (otherwise iorq->errno == iorq->lasterror). 2164 */ 2165 void 2166 xdc_perror(iorq, iopb, still_trying) 2167 struct xd_iorq *iorq; 2168 struct xd_iopb *iopb; 2169 int still_trying; 2170 2171 { 2172 2173 int error = iorq->lasterror; 2174 2175 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2176 : iorq->xdc->sc_dev.dv_xname); 2177 if (iorq->buf) 2178 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2179 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2180 printf("%s %d/%d/%d: ", 2181 (iopb->comm == XDCMD_RD) ? "read" : "write", 2182 iopb->cylno, iopb->headno, iopb->sectno); 2183 printf("%s", xdc_e2str(error)); 2184 2185 if (still_trying) 2186 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2187 else 2188 if (iorq->errno == 0) 2189 printf(" [recovered in %d tries]", iorq->tries); 2190 2191 printf("\n"); 2192 } 2193 2194 /* 2195 * xdc_error: non-fatal error encountered... recover. 2196 * return AOK if resubmitted, return FAIL if this iopb is done 2197 */ 2198 int 2199 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2200 struct xdc_softc *xdcsc; 2201 struct xd_iorq *iorq; 2202 struct xd_iopb *iopb; 2203 int rqno, comm; 2204 2205 { 2206 int errno = iorq->errno; 2207 int erract = errno & XD_ERA_MASK; 2208 int oldmode, advance; 2209 #ifdef __sparc__ 2210 int i; 2211 #endif 2212 2213 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2214 oldmode = iorq->mode; 2215 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2216 xdcsc->ndone++; 2217 /* make xdc_start ignore us */ 2218 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2219 iorq->mode = oldmode; 2220 xdcsc->ndone--; 2221 } 2222 /* check for read/write to a sector in bad144 table if bad: redirect 2223 * request to bad144 area */ 2224 2225 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2226 (iorq->mode & XD_MODE_B144) == 0) { 2227 advance = iorq->sectcnt - iopb->sectcnt; 2228 XDC_ADVANCE(iorq, advance); 2229 #ifdef __sparc__ 2230 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2231 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2232 iorq->blockno % iorq->xd->nsect)) != -1) { 2233 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2234 * redirect */ 2235 iopb->errno = iopb->done = iopb->errs = 0; 2236 iopb->sectcnt = 1; 2237 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2238 /* second to last acyl */ 2239 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2240 * standard */ 2241 iopb->headno = i / iorq->xd->nhead; 2242 iopb->sectno = i % iorq->xd->nhead; 2243 XDC_HWAIT(xdcsc, rqno); 2244 xdc_start(xdcsc, 1); /* resubmit */ 2245 return (XD_ERR_AOK); /* recovered! */ 2246 } 2247 #endif 2248 } 2249 2250 /* 2251 * it isn't a bad144 sector, must be real error! see if we can retry 2252 * it? 2253 */ 2254 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2255 xdc_perror(iorq, iopb, 1); /* inform of error state 2256 * change */ 2257 iorq->lasterror = errno; 2258 2259 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2260 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2261 iorq->tries++; 2262 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2263 XDC_HWAIT(xdcsc, rqno); 2264 xdc_start(xdcsc, 1); /* restart */ 2265 return (XD_ERR_AOK); /* recovered! */ 2266 } 2267 2268 /* failed to recover from this error */ 2269 return (XD_ERR_FAIL); 2270 } 2271 2272 /* 2273 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2274 */ 2275 void 2276 xdc_tick(arg) 2277 void *arg; 2278 2279 { 2280 struct xdc_softc *xdcsc = arg; 2281 int lcv, s, reset = 0; 2282 #ifdef XDC_DIAG 2283 int wait, run, free, done, whd = 0; 2284 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2285 s = splbio(); 2286 wait = xdcsc->nwait; 2287 run = xdcsc->nrun; 2288 free = xdcsc->nfree; 2289 done = xdcsc->ndone; 2290 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2291 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2292 splx(s); 2293 if (wait + run + free + done != XDC_MAXIOPB) { 2294 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2295 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2296 bzero(mark, sizeof(mark)); 2297 printf("FREE: "); 2298 for (lcv = free; lcv > 0; lcv--) { 2299 printf("%d ", fqc[lcv - 1]); 2300 mark[fqc[lcv - 1]] = 1; 2301 } 2302 printf("\nWAIT: "); 2303 lcv = wait; 2304 while (lcv > 0) { 2305 printf("%d ", wqc[whd]); 2306 mark[wqc[whd]] = 1; 2307 whd = (whd + 1) % XDC_MAXIOPB; 2308 lcv--; 2309 } 2310 printf("\n"); 2311 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2312 if (mark[lcv] == 0) 2313 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2314 lcv, xdcsc->reqs[lcv].mode, 2315 xdcsc->iopbase[lcv].done, 2316 xdcsc->iopbase[lcv].errs, 2317 xdcsc->iopbase[lcv].errno, 2318 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2319 } 2320 } else 2321 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2322 printf("%s: diag: lots of done jobs (%d)\n", 2323 xdcsc->sc_dev.dv_xname, done); 2324 2325 #endif 2326 #ifdef XDC_DEBUG 2327 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2328 xdcsc->sc_dev.dv_xname, 2329 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2330 xdcsc->ndone); 2331 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2332 if (xdcsc->reqs[lcv].mode) 2333 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2334 lcv, 2335 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2336 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2337 } 2338 #endif 2339 2340 /* reduce ttl for each request if one goes to zero, reset xdc */ 2341 s = splbio(); 2342 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2343 if (xdcsc->reqs[lcv].mode == 0 || 2344 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2345 continue; 2346 xdcsc->reqs[lcv].ttl--; 2347 if (xdcsc->reqs[lcv].ttl == 0) 2348 reset = 1; 2349 } 2350 if (reset) { 2351 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2352 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2353 } 2354 splx(s); 2355 2356 /* until next time */ 2357 2358 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2359 } 2360 2361 /* 2362 * xdc_ioctlcmd: this function provides a user level interface to the 2363 * controller via ioctl. this allows "format" programs to be written 2364 * in user code, and is also useful for some debugging. we return 2365 * an error code. called at user priority. 2366 */ 2367 int 2368 xdc_ioctlcmd(xd, dev, xio) 2369 struct xd_softc *xd; 2370 dev_t dev; 2371 struct xd_iocmd *xio; 2372 2373 { 2374 int s, rqno, dummy; 2375 caddr_t dvmabuf = NULL, buf = NULL; 2376 struct xdc_softc *xdcsc; 2377 int rseg, error; 2378 bus_dma_segment_t seg; 2379 2380 /* check sanity of requested command */ 2381 2382 switch (xio->cmd) { 2383 2384 case XDCMD_NOP: /* no op: everything should be zero */ 2385 if (xio->subfn || xio->dptr || xio->dlen || 2386 xio->block || xio->sectcnt) 2387 return (EINVAL); 2388 break; 2389 2390 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2391 case XDCMD_WR: 2392 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2393 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2394 return (EINVAL); 2395 break; 2396 2397 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2398 return (EINVAL); 2399 2400 case XDCMD_WRP: /* write parameters */ 2401 return (EINVAL);/* not useful, except maybe drive 2402 * parameters... but drive parameters should 2403 * go via disklabel changes */ 2404 2405 case XDCMD_RDP: /* read parameters */ 2406 if (xio->subfn != XDFUN_DRV || 2407 xio->dlen || xio->block || xio->dptr) 2408 return (EINVAL); /* allow read drive params to 2409 * get hw_spt */ 2410 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2411 return (0); 2412 break; 2413 2414 case XDCMD_XRD: /* extended read/write */ 2415 case XDCMD_XWR: 2416 2417 switch (xio->subfn) { 2418 2419 case XDFUN_THD:/* track headers */ 2420 if (xio->sectcnt != xd->hw_spt || 2421 (xio->block % xd->nsect) != 0 || 2422 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2423 xio->dptr == NULL) 2424 return (EINVAL); 2425 xio->sectcnt = 0; 2426 break; 2427 2428 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2429 if (xio->cmd == XDCMD_XRD) 2430 return (EINVAL); /* no XDFUN_VFY */ 2431 if (xio->sectcnt || xio->dlen || 2432 (xio->block % xd->nsect) != 0 || xio->dptr) 2433 return (EINVAL); 2434 break; 2435 2436 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2437 return (EINVAL); /* not yet */ 2438 2439 case XDFUN_DM: /* defect map */ 2440 case XDFUN_DMX:/* defect map (alternate location) */ 2441 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2442 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2443 return (EINVAL); 2444 break; 2445 2446 default: 2447 return (EINVAL); 2448 } 2449 break; 2450 2451 case XDCMD_TST: /* diagnostics */ 2452 return (EINVAL); 2453 2454 default: 2455 return (EINVAL);/* ??? */ 2456 } 2457 2458 xdcsc = xd->parent; 2459 2460 /* create DVMA buffer for request if needed */ 2461 if (xio->dlen) { 2462 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2463 &seg, &rseg, 2464 xio->dlen, &buf, 2465 (bus_addr_t *)&dvmabuf)) != 0) { 2466 return (error); 2467 } 2468 2469 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2470 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2471 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2472 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2473 return (error); 2474 } 2475 } 2476 } 2477 2478 /* do it! */ 2479 2480 error = 0; 2481 s = splbio(); 2482 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2483 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2484 if (rqno == XD_ERR_FAIL) { 2485 error = EIO; 2486 goto done; 2487 } 2488 xio->errno = xdcsc->reqs[rqno].errno; 2489 xio->tries = xdcsc->reqs[rqno].tries; 2490 XDC_DONE(xdcsc, rqno, dummy); 2491 2492 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2493 error = copyout(buf, xio->dptr, xio->dlen); 2494 2495 done: 2496 splx(s); 2497 if (dvmabuf) { 2498 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2499 xio->dlen, buf); 2500 } 2501 return (error); 2502 } 2503 2504 /* 2505 * xdc_e2str: convert error code number into an error string 2506 */ 2507 char * 2508 xdc_e2str(no) 2509 int no; 2510 { 2511 switch (no) { 2512 case XD_ERR_FAIL: 2513 return ("Software fatal error"); 2514 case XD_ERR_AOK: 2515 return ("Successful completion"); 2516 case XD_ERR_ICYL: 2517 return ("Illegal cylinder address"); 2518 case XD_ERR_IHD: 2519 return ("Illegal head address"); 2520 case XD_ERR_ISEC: 2521 return ("Illgal sector address"); 2522 case XD_ERR_CZER: 2523 return ("Count zero"); 2524 case XD_ERR_UIMP: 2525 return ("Unimplemented command"); 2526 case XD_ERR_IF1: 2527 return ("Illegal field length 1"); 2528 case XD_ERR_IF2: 2529 return ("Illegal field length 2"); 2530 case XD_ERR_IF3: 2531 return ("Illegal field length 3"); 2532 case XD_ERR_IF4: 2533 return ("Illegal field length 4"); 2534 case XD_ERR_IF5: 2535 return ("Illegal field length 5"); 2536 case XD_ERR_IF6: 2537 return ("Illegal field length 6"); 2538 case XD_ERR_IF7: 2539 return ("Illegal field length 7"); 2540 case XD_ERR_ISG: 2541 return ("Illegal scatter/gather length"); 2542 case XD_ERR_ISPT: 2543 return ("Not enough sectors per track"); 2544 case XD_ERR_ALGN: 2545 return ("Next IOPB address alignment error"); 2546 case XD_ERR_SGAL: 2547 return ("Scatter/gather address alignment error"); 2548 case XD_ERR_SGEC: 2549 return ("Scatter/gather with auto-ECC"); 2550 case XD_ERR_SECC: 2551 return ("Soft ECC corrected"); 2552 case XD_ERR_SIGN: 2553 return ("ECC ignored"); 2554 case XD_ERR_ASEK: 2555 return ("Auto-seek retry recovered"); 2556 case XD_ERR_RTRY: 2557 return ("Soft retry recovered"); 2558 case XD_ERR_HECC: 2559 return ("Hard data ECC"); 2560 case XD_ERR_NHDR: 2561 return ("Header not found"); 2562 case XD_ERR_NRDY: 2563 return ("Drive not ready"); 2564 case XD_ERR_TOUT: 2565 return ("Operation timeout"); 2566 case XD_ERR_VTIM: 2567 return ("VMEDMA timeout"); 2568 case XD_ERR_DSEQ: 2569 return ("Disk sequencer error"); 2570 case XD_ERR_HDEC: 2571 return ("Header ECC error"); 2572 case XD_ERR_RVFY: 2573 return ("Read verify"); 2574 case XD_ERR_VFER: 2575 return ("Fatail VMEDMA error"); 2576 case XD_ERR_VBUS: 2577 return ("VMEbus error"); 2578 case XD_ERR_DFLT: 2579 return ("Drive faulted"); 2580 case XD_ERR_HECY: 2581 return ("Header error/cyliner"); 2582 case XD_ERR_HEHD: 2583 return ("Header error/head"); 2584 case XD_ERR_NOCY: 2585 return ("Drive not on-cylinder"); 2586 case XD_ERR_SEEK: 2587 return ("Seek error"); 2588 case XD_ERR_ILSS: 2589 return ("Illegal sector size"); 2590 case XD_ERR_SEC: 2591 return ("Soft ECC"); 2592 case XD_ERR_WPER: 2593 return ("Write-protect error"); 2594 case XD_ERR_IRAM: 2595 return ("IRAM self test failure"); 2596 case XD_ERR_MT3: 2597 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2598 case XD_ERR_MT4: 2599 return ("Maintenance test 4 failure (header shift reg)"); 2600 case XD_ERR_MT5: 2601 return ("Maintenance test 5 failure (VMEDMA regs)"); 2602 case XD_ERR_MT6: 2603 return ("Maintenance test 6 failure (REGCEL chip)"); 2604 case XD_ERR_MT7: 2605 return ("Maintenance test 7 failure (buffer parity)"); 2606 case XD_ERR_MT8: 2607 return ("Maintenance test 8 failure (disk FIFO)"); 2608 case XD_ERR_IOCK: 2609 return ("IOPB checksum miscompare"); 2610 case XD_ERR_IODM: 2611 return ("IOPB DMA fatal"); 2612 case XD_ERR_IOAL: 2613 return ("IOPB address alignment error"); 2614 case XD_ERR_FIRM: 2615 return ("Firmware error"); 2616 case XD_ERR_MMOD: 2617 return ("Illegal maintenance mode test number"); 2618 case XD_ERR_ACFL: 2619 return ("ACFAIL asserted"); 2620 default: 2621 return ("Unknown error"); 2622 } 2623 } 2624