1 /* $NetBSD: xd.c,v 1.49 2003/05/10 23:12:48 thorpej Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * x d . c x y l o g i c s 7 5 3 / 7 0 5 3 v m e / s m d d r i v e r 37 * 38 * author: Chuck Cranor <chuck@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 1.49 2003/05/10 23:12:48 thorpej 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 /* 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 CFATTACH_DECL(xdc, sizeof(struct xdc_softc), 282 xdcmatch, xdcattach, NULL, NULL); 283 284 CFATTACH_DECL(xd, sizeof(struct xd_softc), 285 xdmatch, xdattach, NULL, NULL); 286 287 extern struct cfdriver xd_cd; 288 289 dev_type_open(xdopen); 290 dev_type_close(xdclose); 291 dev_type_read(xdread); 292 dev_type_write(xdwrite); 293 dev_type_ioctl(xdioctl); 294 dev_type_strategy(xdstrategy); 295 dev_type_dump(xddump); 296 dev_type_size(xdsize); 297 298 const struct bdevsw xd_bdevsw = { 299 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 300 }; 301 302 const struct cdevsw xd_cdevsw = { 303 xdopen, xdclose, xdread, xdwrite, xdioctl, 304 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 305 }; 306 307 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 308 int driveno; /* unit number */ 309 int fullmode; /* submit mode */ 310 int booting; /* are we booting or not? */ 311 }; 312 313 /* 314 * dkdriver 315 */ 316 317 struct dkdriver xddkdriver = {xdstrategy}; 318 319 /* 320 * start: disk label fix code (XXX) 321 */ 322 323 static void *xd_labeldata; 324 325 static void 326 xddummystrat(bp) 327 struct buf *bp; 328 { 329 if (bp->b_bcount != XDFM_BPS) 330 panic("xddummystrat"); 331 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 332 bp->b_flags |= B_DONE; 333 bp->b_flags &= ~B_BUSY; 334 } 335 336 int 337 xdgetdisklabel(xd, b) 338 struct xd_softc *xd; 339 void *b; 340 { 341 const char *err; 342 #if defined(__sparc__) || defined(sun3) 343 struct sun_disklabel *sdl; 344 #endif 345 346 /* We already have the label data in `b'; setup for dummy strategy */ 347 xd_labeldata = b; 348 349 /* Required parameter for readdisklabel() */ 350 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 351 352 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 353 xddummystrat, 354 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 355 if (err) { 356 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 357 return(XD_ERR_FAIL); 358 } 359 360 #if defined(__sparc__) || defined(sun3) 361 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 362 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 363 if (sdl->sl_magic == SUN_DKMAGIC) { 364 xd->pcyl = sdl->sl_pcylinders; 365 } else 366 #endif 367 { 368 printf("%s: WARNING: no `pcyl' in disk label.\n", 369 xd->sc_dev.dv_xname); 370 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 371 xd->sc_dk.dk_label->d_acylinders; 372 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 373 xd->sc_dev.dv_xname, xd->pcyl); 374 } 375 376 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 377 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 378 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 379 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 380 xd->sectpercyl = xd->nhead * xd->nsect; 381 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 382 * sun->bsd */ 383 return(XD_ERR_AOK); 384 } 385 386 /* 387 * end: disk label fix code (XXX) 388 */ 389 390 /* 391 * Shorthand for allocating, mapping and loading a DMA buffer 392 */ 393 int 394 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 395 bus_dma_tag_t tag; 396 bus_dmamap_t map; 397 bus_dma_segment_t *seg; 398 int *nsegp; 399 bus_size_t len; 400 caddr_t *kvap; 401 bus_addr_t *dmap; 402 { 403 int nseg; 404 int error; 405 406 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 407 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 408 return (error); 409 } 410 411 if ((error = bus_dmamem_map(tag, seg, nseg, 412 len, kvap, 413 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 414 bus_dmamem_free(tag, seg, nseg); 415 return (error); 416 } 417 418 if ((error = bus_dmamap_load(tag, map, 419 *kvap, len, NULL, 420 BUS_DMA_NOWAIT)) != 0) { 421 bus_dmamem_unmap(tag, *kvap, len); 422 bus_dmamem_free(tag, seg, nseg); 423 return (error); 424 } 425 426 *dmap = map->dm_segs[0].ds_addr; 427 *nsegp = nseg; 428 return (0); 429 } 430 431 void 432 xd_dmamem_free(tag, map, seg, nseg, len, kva) 433 bus_dma_tag_t tag; 434 bus_dmamap_t map; 435 bus_dma_segment_t *seg; 436 int nseg; 437 bus_size_t len; 438 caddr_t kva; 439 { 440 441 bus_dmamap_unload(tag, map); 442 bus_dmamem_unmap(tag, kva, len); 443 bus_dmamem_free(tag, seg, nseg); 444 } 445 446 447 /* 448 * a u t o c o n f i g f u n c t i o n s 449 */ 450 451 /* 452 * xdcmatch: determine if xdc is present or not. we do a 453 * soft reset to detect the xdc. 454 */ 455 456 int 457 xdc_probe(arg, tag, handle) 458 void *arg; 459 bus_space_tag_t tag; 460 bus_space_handle_t handle; 461 { 462 struct xdc *xdc = (void *)handle; /* XXX */ 463 int del = 0; 464 465 xdc->xdc_csr = XDC_RESET; 466 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 467 return (del > 0 ? 0 : EIO); 468 } 469 470 int xdcmatch(parent, cf, aux) 471 struct device *parent; 472 struct cfdata *cf; 473 void *aux; 474 { 475 struct vme_attach_args *va = aux; 476 vme_chipset_tag_t ct = va->va_vct; 477 vme_am_t mod; 478 int error; 479 480 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 481 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 482 return (0); 483 484 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 485 mod, VME_D32, xdc_probe, 0); 486 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 487 488 return (error == 0); 489 } 490 491 /* 492 * xdcattach: attach controller 493 */ 494 void 495 xdcattach(parent, self, aux) 496 struct device *parent, *self; 497 void *aux; 498 499 { 500 struct vme_attach_args *va = aux; 501 vme_chipset_tag_t ct = va->va_vct; 502 bus_space_tag_t bt; 503 bus_space_handle_t bh; 504 vme_intr_handle_t ih; 505 vme_am_t mod; 506 struct xdc_softc *xdc = (void *) self; 507 struct xdc_attach_args xa; 508 int lcv, rqno, error; 509 struct xd_iopb_ctrl *ctl; 510 bus_dma_segment_t seg; 511 int rseg; 512 vme_mapresc_t resc; 513 514 xdc_md_setup(); 515 516 /* get addressing and intr level stuff from autoconfig and load it 517 * into our xdc_softc. */ 518 519 xdc->dmatag = va->va_bdt; 520 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 521 522 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 523 panic("xdc: vme alloc"); 524 525 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 526 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 527 panic("xdc: vme_map"); 528 529 xdc->xdc = (struct xdc *) bh; /* XXX */ 530 xdc->ipl = va->ilevel; 531 xdc->vector = va->ivector; 532 533 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 534 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 535 536 /* 537 * allocate and zero buffers 538 * 539 * note: we simplify the code by allocating the max number of iopbs and 540 * iorq's up front. thus, we avoid linked lists and the costs 541 * associated with them in exchange for wasting a little memory. 542 */ 543 544 /* Get DMA handle for misc. transfers */ 545 if ((error = vme_dmamap_create( 546 ct, /* VME chip tag */ 547 MAXPHYS, /* size */ 548 VME_AM_A24, /* address modifier */ 549 VME_D32, /* data size */ 550 0, /* swap */ 551 1, /* nsegments */ 552 MAXPHYS, /* maxsegsz */ 553 0, /* boundary */ 554 BUS_DMA_NOWAIT, 555 &xdc->auxmap)) != 0) { 556 557 printf("%s: DMA buffer map create error %d\n", 558 xdc->sc_dev.dv_xname, error); 559 return; 560 } 561 562 563 /* Get DMA handle for mapping iorq descriptors */ 564 if ((error = vme_dmamap_create( 565 ct, /* VME chip tag */ 566 XDC_MAXIOPB * sizeof(struct xd_iopb), 567 VME_AM_A24, /* address modifier */ 568 VME_D32, /* data size */ 569 0, /* swap */ 570 1, /* nsegments */ 571 XDC_MAXIOPB * sizeof(struct xd_iopb), 572 0, /* boundary */ 573 BUS_DMA_NOWAIT, 574 &xdc->iopmap)) != 0) { 575 576 printf("%s: DMA buffer map create error %d\n", 577 xdc->sc_dev.dv_xname, error); 578 return; 579 } 580 581 /* Get DMA buffer for iorq descriptors */ 582 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 583 XDC_MAXIOPB * sizeof(struct xd_iopb), 584 (caddr_t *)&xdc->iopbase, 585 (bus_addr_t *)&xdc->dvmaiopb)) != 0) { 586 printf("%s: DMA buffer alloc error %d\n", 587 xdc->sc_dev.dv_xname, error); 588 return; 589 } 590 591 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 592 593 xdc->reqs = (struct xd_iorq *) 594 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 595 M_DEVBUF, M_NOWAIT|M_ZERO); 596 if (xdc->reqs == NULL) 597 panic("xdc malloc"); 598 599 /* init free list, iorq to iopb pointers, and non-zero fields in the 600 * iopb which never change. */ 601 602 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 603 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 604 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 605 xdc->freereq[lcv] = lcv; 606 xdc->iopbase[lcv].fixd = 1; /* always the same */ 607 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 608 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 609 610 if ((error = vme_dmamap_create( 611 ct, /* VME chip tag */ 612 MAXPHYS, /* size */ 613 VME_AM_A24, /* address modifier */ 614 VME_D32, /* data size */ 615 0, /* swap */ 616 1, /* nsegments */ 617 MAXPHYS, /* maxsegsz */ 618 0, /* boundary */ 619 BUS_DMA_NOWAIT, 620 &xdc->reqs[lcv].dmamap)) != 0) { 621 622 printf("%s: DMA buffer map create error %d\n", 623 xdc->sc_dev.dv_xname, error); 624 return; 625 } 626 } 627 xdc->nfree = XDC_MAXIOPB; 628 xdc->nrun = 0; 629 xdc->waithead = xdc->waitend = xdc->nwait = 0; 630 xdc->ndone = 0; 631 632 /* init queue of waiting bufs */ 633 634 bufq_alloc(&xdc->sc_wq, BUFQ_FCFS); 635 callout_init(&xdc->sc_tick_ch); 636 637 /* 638 * section 7 of the manual tells us how to init the controller: 639 * - read controller parameters (6/0) 640 * - write controller parameters (5/0) 641 */ 642 643 /* read controller parameters and insure we have a 753/7053 */ 644 645 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 646 if (rqno == XD_ERR_FAIL) { 647 printf(": couldn't read controller params\n"); 648 return; /* shouldn't ever happen */ 649 } 650 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 651 if (ctl->ctype != XDCT_753) { 652 if (xdc->reqs[rqno].errno) 653 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 654 printf(": doesn't identify as a 753/7053\n"); 655 XDC_DONE(xdc, rqno, error); 656 return; 657 } 658 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 659 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 660 XDC_DONE(xdc, rqno, error); 661 662 /* now write controller parameters (xdc_cmd sets all params for us) */ 663 664 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 665 XDC_DONE(xdc, rqno, error); 666 if (error) { 667 printf("%s: controller config error: %s\n", 668 xdc->sc_dev.dv_xname, xdc_e2str(error)); 669 return; 670 } 671 672 /* link in interrupt with higher level software */ 673 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 674 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 675 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 676 xdc->sc_dev.dv_xname, "intr"); 677 678 679 /* now we must look for disks using autoconfig */ 680 xa.fullmode = XD_SUB_POLL; 681 xa.booting = 1; 682 683 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 684 (void) config_found(self, (void *) &xa, NULL); 685 686 /* start the watchdog clock */ 687 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 688 689 } 690 691 /* 692 * xdmatch: probe for disk. 693 * 694 * note: we almost always say disk is present. this allows us to 695 * spin up and configure a disk after the system is booted (we can 696 * call xdattach!). 697 */ 698 int 699 xdmatch(parent, cf, aux) 700 struct device *parent; 701 struct cfdata *cf; 702 void *aux; 703 { 704 struct xdc_attach_args *xa = aux; 705 706 /* looking for autoconf wildcard or exact match */ 707 708 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 709 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 710 return 0; 711 712 return 1; 713 714 } 715 716 /* 717 * xdattach: attach a disk. this can be called from autoconf and also 718 * from xdopen/xdstrategy. 719 */ 720 void 721 xdattach(parent, self, aux) 722 struct device *parent, *self; 723 void *aux; 724 725 { 726 struct xd_softc *xd = (void *) self; 727 struct xdc_softc *xdc = (void *) parent; 728 struct xdc_attach_args *xa = aux; 729 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 730 struct xd_iopb_drive *driopb; 731 struct dkbad *dkb; 732 int rseg, error; 733 bus_dma_segment_t seg; 734 caddr_t dmaddr; 735 caddr_t buf; 736 737 /* 738 * Always re-initialize the disk structure. We want statistics 739 * to start with a clean slate. 740 */ 741 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 742 xd->sc_dk.dk_driver = &xddkdriver; 743 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 744 745 /* if booting, init the xd_softc */ 746 747 if (xa->booting) { 748 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 749 xd->flags = 0; 750 xd->parent = xdc; 751 } 752 xd->xd_drive = xa->driveno; 753 fmode = xa->fullmode; 754 xdc->sc_drives[xa->driveno] = xd; 755 756 /* if not booting, make sure we are the only process in the attach for 757 * this drive. if locked out, sleep on it. */ 758 759 if (!xa->booting) { 760 s = splbio(); 761 while (xd->state == XD_DRIVE_ATTACHING) { 762 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 763 splx(s); 764 return; 765 } 766 } 767 printf("%s at %s", 768 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 769 } 770 771 /* we now have control */ 772 xd->state = XD_DRIVE_ATTACHING; 773 newstate = XD_DRIVE_UNKNOWN; 774 775 buf = NULL; 776 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 777 XDFM_BPS, 778 (caddr_t *)&buf, 779 (bus_addr_t *)&dmaddr)) != 0) { 780 printf("%s: DMA buffer alloc error %d\n", 781 xdc->sc_dev.dv_xname, error); 782 return; 783 } 784 785 /* first try and reset the drive */ 786 787 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 788 XDC_DONE(xdc, rqno, error); 789 if (error == XD_ERR_NRDY) { 790 printf(" drive %d: off-line\n", xa->driveno); 791 goto done; 792 } 793 if (error) { 794 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 795 goto done; 796 } 797 printf(" drive %d: ready\n", xa->driveno); 798 799 /* now set format parameters */ 800 801 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 802 XDC_DONE(xdc, rqno, error); 803 if (error) { 804 printf("%s: write format parameters failed: %s\n", 805 xd->sc_dev.dv_xname, xdc_e2str(error)); 806 goto done; 807 } 808 809 /* get drive parameters */ 810 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 811 if (rqno != XD_ERR_FAIL) { 812 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 813 spt = driopb->sectpertrk; 814 } 815 XDC_DONE(xdc, rqno, error); 816 if (error) { 817 printf("%s: read drive parameters failed: %s\n", 818 xd->sc_dev.dv_xname, xdc_e2str(error)); 819 goto done; 820 } 821 822 /* 823 * now set drive parameters (to semi-bogus values) so we can read the 824 * disk label. 825 */ 826 xd->pcyl = xd->ncyl = 1; 827 xd->acyl = 0; 828 xd->nhead = 1; 829 xd->nsect = 1; 830 xd->sectpercyl = 1; 831 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 832 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 833 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 834 XDC_DONE(xdc, rqno, error); 835 if (error) { 836 printf("%s: write drive parameters failed: %s\n", 837 xd->sc_dev.dv_xname, xdc_e2str(error)); 838 goto done; 839 } 840 841 /* read disk label */ 842 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 843 XDC_DONE(xdc, rqno, error); 844 if (error) { 845 printf("%s: reading disk label failed: %s\n", 846 xd->sc_dev.dv_xname, xdc_e2str(error)); 847 goto done; 848 } 849 newstate = XD_DRIVE_NOLABEL; 850 851 xd->hw_spt = spt; 852 /* Attach the disk: must be before getdisklabel to malloc label */ 853 disk_attach(&xd->sc_dk); 854 855 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 856 goto done; 857 858 /* inform the user of what is up */ 859 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 860 buf, xd->pcyl, spt); 861 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 862 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 863 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 864 XDFM_BPS); 865 866 /* now set the real drive parameters! */ 867 868 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 869 XDC_DONE(xdc, rqno, error); 870 if (error) { 871 printf("%s: write real drive parameters failed: %s\n", 872 xd->sc_dev.dv_xname, xdc_e2str(error)); 873 goto done; 874 } 875 newstate = XD_DRIVE_ONLINE; 876 877 /* 878 * read bad144 table. this table resides on the first sector of the 879 * last track of the disk (i.e. second cyl of "acyl" area). 880 */ 881 882 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 883 (xd->nhead - 1) * xd->nsect; /* last head */ 884 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 885 XDC_DONE(xdc, rqno, error); 886 if (error) { 887 printf("%s: reading bad144 failed: %s\n", 888 xd->sc_dev.dv_xname, xdc_e2str(error)); 889 goto done; 890 } 891 892 /* check dkbad for sanity */ 893 dkb = (struct dkbad *) buf; 894 for (lcv = 0; lcv < 126; lcv++) { 895 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 896 dkb->bt_bad[lcv].bt_cyl == 0) && 897 dkb->bt_bad[lcv].bt_trksec == 0xffff) 898 continue; /* blank */ 899 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 900 break; 901 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 902 break; 903 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 904 break; 905 } 906 if (lcv != 126) { 907 printf("%s: warning: invalid bad144 sector!\n", 908 xd->sc_dev.dv_xname); 909 } else { 910 bcopy(buf, &xd->dkb, XDFM_BPS); 911 } 912 913 done: 914 if (buf != NULL) { 915 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 916 &seg, rseg, XDFM_BPS, buf); 917 } 918 919 xd->state = newstate; 920 if (!xa->booting) { 921 wakeup(&xd->state); 922 splx(s); 923 } 924 } 925 926 /* 927 * end of autoconfig functions 928 */ 929 930 /* 931 * { b , c } d e v s w f u n c t i o n s 932 */ 933 934 /* 935 * xdclose: close device 936 */ 937 int 938 xdclose(dev, flag, fmt, p) 939 dev_t dev; 940 int flag, fmt; 941 struct proc *p; 942 { 943 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 944 int part = DISKPART(dev); 945 946 /* clear mask bits */ 947 948 switch (fmt) { 949 case S_IFCHR: 950 xd->sc_dk.dk_copenmask &= ~(1 << part); 951 break; 952 case S_IFBLK: 953 xd->sc_dk.dk_bopenmask &= ~(1 << part); 954 break; 955 } 956 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 957 958 return 0; 959 } 960 961 /* 962 * xddump: crash dump system 963 */ 964 int 965 xddump(dev, blkno, va, size) 966 dev_t dev; 967 daddr_t blkno; 968 caddr_t va; 969 size_t size; 970 { 971 int unit, part; 972 struct xd_softc *xd; 973 974 unit = DISKUNIT(dev); 975 if (unit >= xd_cd.cd_ndevs) 976 return ENXIO; 977 part = DISKPART(dev); 978 979 xd = xd_cd.cd_devs[unit]; 980 981 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 982 'a' + part); 983 984 return ENXIO; 985 986 /* outline: globals: "dumplo" == sector number of partition to start 987 * dump at (convert to physical sector with partition table) 988 * "dumpsize" == size of dump in clicks "physmem" == size of physical 989 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 990 * physmem) 991 * 992 * dump a copy of physical memory to the dump device starting at sector 993 * "dumplo" in the swap partition (make sure > 0). map in pages as 994 * we go. use polled I/O. 995 * 996 * XXX how to handle NON_CONTIG? */ 997 998 } 999 1000 /* 1001 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1002 */ 1003 int 1004 xdioctl(dev, command, addr, flag, p) 1005 dev_t dev; 1006 u_long command; 1007 caddr_t addr; 1008 int flag; 1009 struct proc *p; 1010 1011 { 1012 struct xd_softc *xd; 1013 struct xd_iocmd *xio; 1014 int error, s, unit; 1015 #ifdef __HAVE_OLD_DISKLABEL 1016 struct disklabel newlabel; 1017 #endif 1018 struct disklabel *lp; 1019 1020 unit = DISKUNIT(dev); 1021 1022 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1023 return (ENXIO); 1024 1025 /* switch on ioctl type */ 1026 1027 switch (command) { 1028 case DIOCSBAD: /* set bad144 info */ 1029 if ((flag & FWRITE) == 0) 1030 return EBADF; 1031 s = splbio(); 1032 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1033 splx(s); 1034 return 0; 1035 1036 case DIOCGDINFO: /* get disk label */ 1037 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1038 return 0; 1039 #ifdef __HAVE_OLD_DISKLABEL 1040 case ODIOCGDINFO: 1041 newlabel = *(xd->sc_dk.dk_label); 1042 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1043 return ENOTTY; 1044 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1045 return 0; 1046 #endif 1047 1048 case DIOCGPART: /* get partition info */ 1049 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1050 ((struct partinfo *) addr)->part = 1051 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1052 return 0; 1053 1054 case DIOCSDINFO: /* set disk label */ 1055 #ifdef __HAVE_OLD_DISKLABEL 1056 case ODIOCSDINFO: 1057 if (command == ODIOCSDINFO) { 1058 memset(&newlabel, 0, sizeof newlabel); 1059 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1060 lp = &newlabel; 1061 } else 1062 #endif 1063 lp = (struct disklabel *)addr; 1064 1065 if ((flag & FWRITE) == 0) 1066 return EBADF; 1067 error = setdisklabel(xd->sc_dk.dk_label, 1068 lp, /* xd->sc_dk.dk_openmask : */ 0, 1069 xd->sc_dk.dk_cpulabel); 1070 if (error == 0) { 1071 if (xd->state == XD_DRIVE_NOLABEL) 1072 xd->state = XD_DRIVE_ONLINE; 1073 } 1074 return error; 1075 1076 case DIOCWLABEL: /* change write status of disk label */ 1077 if ((flag & FWRITE) == 0) 1078 return EBADF; 1079 if (*(int *) addr) 1080 xd->flags |= XD_WLABEL; 1081 else 1082 xd->flags &= ~XD_WLABEL; 1083 return 0; 1084 1085 case DIOCWDINFO: /* write disk label */ 1086 #ifdef __HAVE_OLD_DISKLABEL 1087 case ODIOCWDINFO: 1088 if (command == ODIOCWDINFO) { 1089 memset(&newlabel, 0, sizeof newlabel); 1090 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1091 lp = &newlabel; 1092 } else 1093 #endif 1094 lp = (struct disklabel *)addr; 1095 1096 if ((flag & FWRITE) == 0) 1097 return EBADF; 1098 error = setdisklabel(xd->sc_dk.dk_label, 1099 lp, /* xd->sc_dk.dk_openmask : */ 0, 1100 xd->sc_dk.dk_cpulabel); 1101 if (error == 0) { 1102 if (xd->state == XD_DRIVE_NOLABEL) 1103 xd->state = XD_DRIVE_ONLINE; 1104 1105 /* Simulate opening partition 0 so write succeeds. */ 1106 xd->sc_dk.dk_openmask |= (1 << 0); 1107 error = writedisklabel(MAKEDISKDEV(major(dev), 1108 DISKUNIT(dev), RAW_PART), 1109 xdstrategy, xd->sc_dk.dk_label, 1110 xd->sc_dk.dk_cpulabel); 1111 xd->sc_dk.dk_openmask = 1112 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1113 } 1114 return error; 1115 1116 case DIOSXDCMD: 1117 xio = (struct xd_iocmd *) addr; 1118 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1119 return (error); 1120 return (xdc_ioctlcmd(xd, dev, xio)); 1121 1122 default: 1123 return ENOTTY; 1124 } 1125 } 1126 /* 1127 * xdopen: open drive 1128 */ 1129 1130 int 1131 xdopen(dev, flag, fmt, p) 1132 dev_t dev; 1133 int flag, fmt; 1134 struct proc *p; 1135 { 1136 int unit, part; 1137 struct xd_softc *xd; 1138 struct xdc_attach_args xa; 1139 1140 /* first, could it be a valid target? */ 1141 1142 unit = DISKUNIT(dev); 1143 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1144 return (ENXIO); 1145 part = DISKPART(dev); 1146 1147 /* do we need to attach the drive? */ 1148 1149 if (xd->state == XD_DRIVE_UNKNOWN) { 1150 xa.driveno = xd->xd_drive; 1151 xa.fullmode = XD_SUB_WAIT; 1152 xa.booting = 0; 1153 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1154 if (xd->state == XD_DRIVE_UNKNOWN) { 1155 return (EIO); 1156 } 1157 } 1158 /* check for partition */ 1159 1160 if (part != RAW_PART && 1161 (part >= xd->sc_dk.dk_label->d_npartitions || 1162 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1163 return (ENXIO); 1164 } 1165 /* set open masks */ 1166 1167 switch (fmt) { 1168 case S_IFCHR: 1169 xd->sc_dk.dk_copenmask |= (1 << part); 1170 break; 1171 case S_IFBLK: 1172 xd->sc_dk.dk_bopenmask |= (1 << part); 1173 break; 1174 } 1175 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1176 1177 return 0; 1178 } 1179 1180 int 1181 xdread(dev, uio, flags) 1182 dev_t dev; 1183 struct uio *uio; 1184 int flags; 1185 { 1186 1187 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1188 } 1189 1190 int 1191 xdwrite(dev, uio, flags) 1192 dev_t dev; 1193 struct uio *uio; 1194 int flags; 1195 { 1196 1197 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1198 } 1199 1200 1201 /* 1202 * xdsize: return size of a partition for a dump 1203 */ 1204 1205 int 1206 xdsize(dev) 1207 dev_t dev; 1208 1209 { 1210 struct xd_softc *xdsc; 1211 int unit, part, size, omask; 1212 1213 /* valid unit? */ 1214 unit = DISKUNIT(dev); 1215 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1216 return (-1); 1217 1218 part = DISKPART(dev); 1219 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1220 1221 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1222 return (-1); 1223 1224 /* do it */ 1225 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1226 size = -1; /* only give valid size for swap partitions */ 1227 else 1228 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1229 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1230 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1231 return (-1); 1232 return (size); 1233 } 1234 /* 1235 * xdstrategy: buffering system interface to xd. 1236 */ 1237 1238 void 1239 xdstrategy(bp) 1240 struct buf *bp; 1241 1242 { 1243 struct xd_softc *xd; 1244 struct xdc_softc *parent; 1245 int s, unit; 1246 struct xdc_attach_args xa; 1247 1248 unit = DISKUNIT(bp->b_dev); 1249 1250 /* check for live device */ 1251 1252 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1253 bp->b_blkno < 0 || 1254 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1255 bp->b_error = EINVAL; 1256 goto bad; 1257 } 1258 /* do we need to attach the drive? */ 1259 1260 if (xd->state == XD_DRIVE_UNKNOWN) { 1261 xa.driveno = xd->xd_drive; 1262 xa.fullmode = XD_SUB_WAIT; 1263 xa.booting = 0; 1264 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1265 if (xd->state == XD_DRIVE_UNKNOWN) { 1266 bp->b_error = EIO; 1267 goto bad; 1268 } 1269 } 1270 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1271 /* no I/O to unlabeled disks, unless raw partition */ 1272 bp->b_error = EIO; 1273 goto bad; 1274 } 1275 /* short circuit zero length request */ 1276 1277 if (bp->b_bcount == 0) 1278 goto done; 1279 1280 /* check bounds with label (disksubr.c). Determine the size of the 1281 * transfer, and make sure it is within the boundaries of the 1282 * partition. Adjust transfer if needed, and signal errors or early 1283 * completion. */ 1284 1285 if (bounds_check_with_label(&xd->sc_dk, bp, 1286 (xd->flags & XD_WLABEL) != 0) <= 0) 1287 goto done; 1288 1289 /* 1290 * now we know we have a valid buf structure that we need to do I/O 1291 * on. 1292 * 1293 * note that we don't disksort because the controller has a sorting 1294 * algorithm built into the hardware. 1295 */ 1296 1297 s = splbio(); /* protect the queues */ 1298 1299 /* first, give jobs in front of us a chance */ 1300 parent = xd->parent; 1301 while (parent->nfree > 0 && BUFQ_PEEK(&parent->sc_wq) != NULL) 1302 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1303 break; 1304 1305 /* if there are no free iorq's, then we just queue and return. the 1306 * buffs will get picked up later by xdcintr(). 1307 */ 1308 1309 if (parent->nfree == 0) { 1310 BUFQ_PUT(&parent->sc_wq, bp); 1311 splx(s); 1312 return; 1313 } 1314 1315 /* now we have free iopb's and we are at splbio... start 'em up */ 1316 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1317 return; 1318 } 1319 1320 /* done! */ 1321 1322 splx(s); 1323 return; 1324 1325 bad: /* tells upper layers we have an error */ 1326 bp->b_flags |= B_ERROR; 1327 done: /* tells upper layers we are done with this 1328 * buf */ 1329 bp->b_resid = bp->b_bcount; 1330 biodone(bp); 1331 } 1332 /* 1333 * end of {b,c}devsw functions 1334 */ 1335 1336 /* 1337 * i n t e r r u p t f u n c t i o n 1338 * 1339 * xdcintr: hardware interrupt. 1340 */ 1341 int 1342 xdcintr(v) 1343 void *v; 1344 1345 { 1346 struct xdc_softc *xdcsc = v; 1347 1348 /* kick the event counter */ 1349 1350 xdcsc->sc_intrcnt.ev_count++; 1351 1352 /* remove as many done IOPBs as possible */ 1353 1354 xdc_remove_iorq(xdcsc); 1355 1356 /* start any iorq's already waiting */ 1357 1358 xdc_start(xdcsc, XDC_MAXIOPB); 1359 1360 /* fill up any remaining iorq's with queue'd buffers */ 1361 1362 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1363 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1364 break; 1365 1366 return (1); 1367 } 1368 /* 1369 * end of interrupt function 1370 */ 1371 1372 /* 1373 * i n t e r n a l f u n c t i o n s 1374 */ 1375 1376 /* 1377 * xdc_rqinit: fill out the fields of an I/O request 1378 */ 1379 1380 inline void 1381 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1382 struct xd_iorq *rq; 1383 struct xdc_softc *xdc; 1384 struct xd_softc *xd; 1385 int md; 1386 u_long blk; 1387 int cnt; 1388 caddr_t db; 1389 struct buf *bp; 1390 { 1391 rq->xdc = xdc; 1392 rq->xd = xd; 1393 rq->ttl = XDC_MAXTTL + 10; 1394 rq->mode = md; 1395 rq->tries = rq->errno = rq->lasterror = 0; 1396 rq->blockno = blk; 1397 rq->sectcnt = cnt; 1398 rq->dbuf = db; 1399 rq->buf = bp; 1400 } 1401 /* 1402 * xdc_rqtopb: load up an IOPB based on an iorq 1403 */ 1404 1405 void 1406 xdc_rqtopb(iorq, iopb, cmd, subfun) 1407 struct xd_iorq *iorq; 1408 struct xd_iopb *iopb; 1409 int cmd, subfun; 1410 1411 { 1412 u_long block, dp; 1413 1414 /* standard stuff */ 1415 1416 iopb->errs = iopb->done = 0; 1417 iopb->comm = cmd; 1418 iopb->errno = iopb->status = 0; 1419 iopb->subfun = subfun; 1420 if (iorq->xd) 1421 iopb->unit = iorq->xd->xd_drive; 1422 else 1423 iopb->unit = 0; 1424 1425 /* check for alternate IOPB format */ 1426 1427 if (cmd == XDCMD_WRP) { 1428 switch (subfun) { 1429 case XDFUN_CTL:{ 1430 struct xd_iopb_ctrl *ctrl = 1431 (struct xd_iopb_ctrl *) iopb; 1432 iopb->lll = 0; 1433 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1434 ? 0 1435 : iorq->xdc->ipl; 1436 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1437 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1438 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1439 XDPC_RBC | XDPC_ECC2; 1440 ctrl->throttle = XDC_THROTTLE; 1441 ctrl->delay = XDC_DELAY; 1442 break; 1443 } 1444 case XDFUN_DRV:{ 1445 struct xd_iopb_drive *drv = 1446 (struct xd_iopb_drive *)iopb; 1447 /* we assume that the disk label has the right 1448 * info */ 1449 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1450 drv->dparam_ipl = (XDC_DPARAM << 3); 1451 else 1452 drv->dparam_ipl = (XDC_DPARAM << 3) | 1453 iorq->xdc->ipl; 1454 drv->maxsect = iorq->xd->nsect - 1; 1455 drv->maxsector = drv->maxsect; 1456 /* note: maxsector != maxsect only if you are 1457 * doing cyl sparing */ 1458 drv->headoff = 0; 1459 drv->maxcyl = iorq->xd->pcyl - 1; 1460 drv->maxhead = iorq->xd->nhead - 1; 1461 break; 1462 } 1463 case XDFUN_FMT:{ 1464 struct xd_iopb_format *form = 1465 (struct xd_iopb_format *) iopb; 1466 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1467 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1468 else 1469 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1470 iorq->xdc->ipl; 1471 form->field1 = XDFM_FIELD1; 1472 form->field2 = XDFM_FIELD2; 1473 form->field3 = XDFM_FIELD3; 1474 form->field4 = XDFM_FIELD4; 1475 form->bytespersec = XDFM_BPS; 1476 form->field6 = XDFM_FIELD6; 1477 form->field7 = XDFM_FIELD7; 1478 break; 1479 } 1480 } 1481 } else { 1482 1483 /* normal IOPB case (harmless to RDP command) */ 1484 1485 iopb->lll = 0; 1486 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1487 ? 0 1488 : iorq->xdc->ipl; 1489 iopb->sectcnt = iorq->sectcnt; 1490 block = iorq->blockno; 1491 if (iorq->xd == NULL || block == 0) { 1492 iopb->sectno = iopb->headno = iopb->cylno = 0; 1493 } else { 1494 iopb->sectno = block % iorq->xd->nsect; 1495 block = block / iorq->xd->nsect; 1496 iopb->headno = block % iorq->xd->nhead; 1497 block = block / iorq->xd->nhead; 1498 iopb->cylno = block; 1499 } 1500 dp = (u_long) iorq->dbuf; 1501 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1502 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1503 ? XDC_ADDRMOD32 1504 : XDC_ADDRMOD; 1505 } 1506 } 1507 1508 /* 1509 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1510 * If you've already got an IORQ, you can call submit directly (currently 1511 * there is no need to do this). NORM requests are handled separately. 1512 */ 1513 int 1514 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1515 struct xdc_softc *xdcsc; 1516 int cmd, subfn, unit, block, scnt; 1517 char *dptr; 1518 int fullmode; 1519 1520 { 1521 int rqno, submode = XD_STATE(fullmode), retry; 1522 struct xd_iorq *iorq; 1523 struct xd_iopb *iopb; 1524 1525 /* get iorq/iopb */ 1526 switch (submode) { 1527 case XD_SUB_POLL: 1528 while (xdcsc->nfree == 0) { 1529 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1530 return (XD_ERR_FAIL); 1531 } 1532 break; 1533 case XD_SUB_WAIT: 1534 retry = 1; 1535 while (retry) { 1536 while (xdcsc->nfree == 0) { 1537 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1538 return (XD_ERR_FAIL); 1539 } 1540 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1541 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1542 return (XD_ERR_FAIL); 1543 } 1544 if (xdcsc->nfree) 1545 retry = 0; /* got it */ 1546 } 1547 break; 1548 default: 1549 return (XD_ERR_FAIL); /* illegal */ 1550 } 1551 if (xdcsc->nfree == 0) 1552 panic("xdcmd nfree"); 1553 rqno = XDC_RQALLOC(xdcsc); 1554 iorq = &xdcsc->reqs[rqno]; 1555 iopb = iorq->iopb; 1556 1557 1558 /* init iorq/iopb */ 1559 1560 xdc_rqinit(iorq, xdcsc, 1561 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1562 fullmode, block, scnt, dptr, NULL); 1563 1564 /* load IOPB from iorq */ 1565 1566 xdc_rqtopb(iorq, iopb, cmd, subfn); 1567 1568 /* submit it for processing */ 1569 1570 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1571 1572 return (rqno); 1573 } 1574 /* 1575 * xdc_startbuf 1576 * start a buffer running, assumes nfree > 0 1577 */ 1578 1579 int 1580 xdc_startbuf(xdcsc, xdsc, bp) 1581 struct xdc_softc *xdcsc; 1582 struct xd_softc *xdsc; 1583 struct buf *bp; 1584 1585 { 1586 int rqno, partno; 1587 struct xd_iorq *iorq; 1588 struct xd_iopb *iopb; 1589 u_long block; 1590 /* caddr_t dbuf;*/ 1591 int error; 1592 1593 if (!xdcsc->nfree) 1594 panic("xdc_startbuf free"); 1595 rqno = XDC_RQALLOC(xdcsc); 1596 iorq = &xdcsc->reqs[rqno]; 1597 iopb = iorq->iopb; 1598 1599 /* get buf */ 1600 1601 if (bp == NULL) { 1602 bp = BUFQ_GET(&xdcsc->sc_wq); 1603 if (bp == NULL) 1604 panic("xdc_startbuf bp"); 1605 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1606 } 1607 partno = DISKPART(bp->b_dev); 1608 #ifdef XDC_DEBUG 1609 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1610 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1611 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1612 bp->b_bcount, bp->b_data); 1613 #endif 1614 1615 /* 1616 * load request. we have to calculate the correct block number based 1617 * on partition info. 1618 * 1619 * note that iorq points to the buffer as mapped into DVMA space, 1620 * where as the bp->b_data points to its non-DVMA mapping. 1621 */ 1622 1623 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1624 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1625 1626 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1627 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1628 if (error != 0) { 1629 printf("%s: warning: cannot load DMA map\n", 1630 xdcsc->sc_dev.dv_xname); 1631 XDC_FREE(xdcsc, rqno); 1632 BUFQ_PUT(&xdcsc->sc_wq, bp); 1633 return (XD_ERR_FAIL); /* XXX: need some sort of 1634 * call-back scheme here? */ 1635 } 1636 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1637 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1638 ? BUS_DMASYNC_PREREAD 1639 : BUS_DMASYNC_PREWRITE); 1640 1641 /* init iorq and load iopb from it */ 1642 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1643 bp->b_bcount / XDFM_BPS, 1644 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1645 bp); 1646 1647 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1648 1649 /* Instrumentation. */ 1650 disk_busy(&xdsc->sc_dk); 1651 1652 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1653 1654 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1655 return (XD_ERR_AOK); 1656 } 1657 1658 1659 /* 1660 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1661 * if ok. if it fail returns an error code. type is XD_SUB_*. 1662 * 1663 * note: caller frees iorq in all cases except NORM 1664 * 1665 * return value: 1666 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1667 * WAIT: XD_AOK (success), <error-code> (failed) 1668 * POLL: <same as WAIT> 1669 * NOQ : <same as NORM> 1670 * 1671 * there are three sources for i/o requests: 1672 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1673 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1674 * [3] open/ioctl: these are I/O requests done in the context of a process, 1675 * and the process should block until they are done. 1676 * 1677 * software state is stored in the iorq structure. each iorq has an 1678 * iopb structure. the hardware understands the iopb structure. 1679 * every command must go through an iopb. a 7053 can only handle 1680 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1681 * DVMA space at boot up time. what happens if we run out of iopb's? 1682 * for i/o type [1], the buffers are queued at the "buff" layer and 1683 * picked up later by the interrupt routine. for case [2] the 1684 * programmed i/o driver is called with a special flag that says 1685 * return when one iopb is free. for case [3] the process can sleep 1686 * on the iorq free list until some iopbs are avaliable. 1687 */ 1688 1689 1690 int 1691 xdc_submit_iorq(xdcsc, iorqno, type) 1692 struct xdc_softc *xdcsc; 1693 int iorqno; 1694 int type; 1695 1696 { 1697 u_long iopbaddr; 1698 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1699 1700 #ifdef XDC_DEBUG 1701 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1702 iorqno, type); 1703 #endif 1704 1705 /* first check and see if controller is busy */ 1706 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1707 #ifdef XDC_DEBUG 1708 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1709 #endif 1710 if (type == XD_SUB_NOQ) 1711 return (XD_ERR_FAIL); /* failed */ 1712 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1713 switch (type) { 1714 case XD_SUB_NORM: 1715 return XD_ERR_AOK; /* success */ 1716 case XD_SUB_WAIT: 1717 while (iorq->iopb->done == 0) { 1718 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1719 } 1720 return (iorq->errno); 1721 case XD_SUB_POLL: 1722 return (xdc_piodriver(xdcsc, iorqno, 0)); 1723 default: 1724 panic("xdc_submit_iorq adding"); 1725 } 1726 } 1727 #ifdef XDC_DEBUG 1728 { 1729 u_char *rio = (u_char *) iorq->iopb; 1730 int sz = sizeof(struct xd_iopb), lcv; 1731 printf("%s: aio #%d [", 1732 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1733 for (lcv = 0; lcv < sz; lcv++) 1734 printf(" %02x", rio[lcv]); 1735 printf("]\n"); 1736 } 1737 #endif /* XDC_DEBUG */ 1738 1739 /* controller not busy, start command */ 1740 iopbaddr = (u_long) iorq->dmaiopb; 1741 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1742 xdcsc->nrun++; 1743 /* command now running, wrap it up */ 1744 switch (type) { 1745 case XD_SUB_NORM: 1746 case XD_SUB_NOQ: 1747 return (XD_ERR_AOK); /* success */ 1748 case XD_SUB_WAIT: 1749 while (iorq->iopb->done == 0) { 1750 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1751 } 1752 return (iorq->errno); 1753 case XD_SUB_POLL: 1754 return (xdc_piodriver(xdcsc, iorqno, 0)); 1755 default: 1756 panic("xdc_submit_iorq wrap up"); 1757 } 1758 panic("xdc_submit_iorq"); 1759 return 0; /* not reached */ 1760 } 1761 1762 1763 /* 1764 * xdc_piodriver 1765 * 1766 * programmed i/o driver. this function takes over the computer 1767 * and drains off all i/o requests. it returns the status of the iorq 1768 * the caller is interesting in. if freeone is true, then it returns 1769 * when there is a free iorq. 1770 */ 1771 int 1772 xdc_piodriver(xdcsc, iorqno, freeone) 1773 struct xdc_softc *xdcsc; 1774 int iorqno; 1775 int freeone; 1776 1777 { 1778 int nreset = 0; 1779 int retval = 0; 1780 u_long count; 1781 struct xdc *xdc = xdcsc->xdc; 1782 #ifdef XDC_DEBUG 1783 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1784 iorqno, freeone); 1785 #endif 1786 1787 while (xdcsc->nwait || xdcsc->nrun) { 1788 #ifdef XDC_DEBUG 1789 printf("xdc_piodriver: wait=%d, run=%d\n", 1790 xdcsc->nwait, xdcsc->nrun); 1791 #endif 1792 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1793 #ifdef XDC_DEBUG 1794 printf("xdc_piodriver: done wait with count = %d\n", count); 1795 #endif 1796 /* we expect some progress soon */ 1797 if (count == 0 && nreset >= 2) { 1798 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1799 #ifdef XDC_DEBUG 1800 printf("xdc_piodriver: timeout\n"); 1801 #endif 1802 return (XD_ERR_FAIL); 1803 } 1804 if (count == 0) { 1805 if (xdc_reset(xdcsc, 0, 1806 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1807 XD_ERR_FAIL, 1808 0) == XD_ERR_FAIL) 1809 return (XD_ERR_FAIL); /* flushes all but POLL 1810 * requests, resets */ 1811 continue; 1812 } 1813 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1814 if (freeone) { 1815 if (xdcsc->nrun < XDC_MAXIOPB) { 1816 #ifdef XDC_DEBUG 1817 printf("xdc_piodriver: done: one free\n"); 1818 #endif 1819 return (XD_ERR_AOK); 1820 } 1821 continue; /* don't xdc_start */ 1822 } 1823 xdc_start(xdcsc, XDC_MAXIOPB); 1824 } 1825 1826 /* get return value */ 1827 1828 retval = xdcsc->reqs[iorqno].errno; 1829 1830 #ifdef XDC_DEBUG 1831 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1832 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1833 #endif 1834 1835 /* now that we've drained everything, start up any bufs that have 1836 * queued */ 1837 1838 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1839 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1840 break; 1841 1842 return (retval); 1843 } 1844 1845 /* 1846 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1847 * we steal iopb[0] for this, but we put it back when we are done. 1848 */ 1849 void 1850 xdc_xdreset(xdcsc, xdsc) 1851 struct xdc_softc *xdcsc; 1852 struct xd_softc *xdsc; 1853 1854 { 1855 struct xd_iopb tmpiopb; 1856 u_long addr; 1857 int del; 1858 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1859 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1860 xdcsc->iopbase->comm = XDCMD_RST; 1861 xdcsc->iopbase->unit = xdsc->xd_drive; 1862 addr = (u_long) xdcsc->dvmaiopb; 1863 XDC_GO(xdcsc->xdc, addr); /* go! */ 1864 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1865 if (del <= 0 || xdcsc->iopbase->errs) { 1866 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1867 xdc_e2str(xdcsc->iopbase->errno)); 1868 xdcsc->xdc->xdc_csr = XDC_RESET; 1869 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1870 if (del <= 0) 1871 panic("xdc_reset"); 1872 } else { 1873 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1874 } 1875 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1876 } 1877 1878 1879 /* 1880 * xdc_reset: reset everything: requests are marked as errors except 1881 * a polled request (which is resubmitted) 1882 */ 1883 int 1884 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1885 struct xdc_softc *xdcsc; 1886 int quiet, blastmode, error; 1887 struct xd_softc *xdsc; 1888 1889 { 1890 int del = 0, lcv, retval = XD_ERR_AOK; 1891 int oldfree = xdcsc->nfree; 1892 1893 /* soft reset hardware */ 1894 1895 if (!quiet) 1896 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1897 xdcsc->xdc->xdc_csr = XDC_RESET; 1898 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1899 if (del <= 0) { 1900 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1901 retval = XD_ERR_FAIL; 1902 } 1903 if (xdsc) 1904 xdc_xdreset(xdcsc, xdsc); 1905 1906 /* fix queues based on "blast-mode" */ 1907 1908 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1909 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1910 1911 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1912 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1913 XD_STATE(iorq->mode) != XD_SUB_NORM) 1914 /* is it active? */ 1915 continue; 1916 1917 xdcsc->nrun--; /* it isn't running any more */ 1918 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1919 /* failed */ 1920 iorq->errno = error; 1921 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1922 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1923 case XD_SUB_NORM: 1924 iorq->buf->b_error = EIO; 1925 iorq->buf->b_flags |= B_ERROR; 1926 iorq->buf->b_resid = 1927 iorq->sectcnt * XDFM_BPS; 1928 1929 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1930 iorq->dmamap->dm_mapsize, 1931 (iorq->buf->b_flags & B_READ) 1932 ? BUS_DMASYNC_POSTREAD 1933 : BUS_DMASYNC_POSTWRITE); 1934 1935 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1936 1937 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1938 (xdcsc->reqs[lcv].buf->b_bcount - 1939 xdcsc->reqs[lcv].buf->b_resid), 1940 (iorq->buf->b_flags & B_READ)); 1941 biodone(iorq->buf); 1942 XDC_FREE(xdcsc, lcv); /* add to free list */ 1943 break; 1944 case XD_SUB_WAIT: 1945 wakeup(iorq); 1946 case XD_SUB_POLL: 1947 xdcsc->ndone++; 1948 iorq->mode = 1949 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1950 break; 1951 } 1952 1953 } else { 1954 1955 /* resubmit, put at front of wait queue */ 1956 XDC_HWAIT(xdcsc, lcv); 1957 } 1958 } 1959 1960 /* 1961 * now, if stuff is waiting, start it. 1962 * since we just reset it should go 1963 */ 1964 xdc_start(xdcsc, XDC_MAXIOPB); 1965 1966 /* ok, we did it */ 1967 if (oldfree == 0 && xdcsc->nfree) 1968 wakeup(&xdcsc->nfree); 1969 1970 #ifdef XDC_DIAG 1971 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1972 if (del != XDC_MAXIOPB) 1973 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1974 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1975 else 1976 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1977 printf("%s: diag: lots of done jobs (%d)\n", 1978 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1979 #endif 1980 printf("RESET DONE\n"); 1981 return (retval); 1982 } 1983 /* 1984 * xdc_start: start all waiting buffers 1985 */ 1986 1987 void 1988 xdc_start(xdcsc, maxio) 1989 struct xdc_softc *xdcsc; 1990 int maxio; 1991 1992 { 1993 int rqno; 1994 while (maxio && xdcsc->nwait && 1995 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1996 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1997 * param */ 1998 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1999 panic("xdc_start"); /* should never happen */ 2000 maxio--; 2001 } 2002 } 2003 /* 2004 * xdc_remove_iorq: remove "done" IOPB's. 2005 */ 2006 2007 int 2008 xdc_remove_iorq(xdcsc) 2009 struct xdc_softc *xdcsc; 2010 2011 { 2012 int errno, rqno, comm, errs; 2013 struct xdc *xdc = xdcsc->xdc; 2014 struct xd_iopb *iopb; 2015 struct xd_iorq *iorq; 2016 struct buf *bp; 2017 2018 if (xdc->xdc_csr & XDC_F_ERROR) { 2019 /* 2020 * FATAL ERROR: should never happen under normal use. This 2021 * error is so bad, you can't even tell which IOPB is bad, so 2022 * we dump them all. 2023 */ 2024 errno = xdc->xdc_f_err; 2025 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2026 errno, xdc_e2str(errno)); 2027 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2028 printf("%s: soft reset failed!\n", 2029 xdcsc->sc_dev.dv_xname); 2030 panic("xdc_remove_iorq: controller DEAD"); 2031 } 2032 return (XD_ERR_AOK); 2033 } 2034 2035 /* 2036 * get iopb that is done 2037 * 2038 * hmm... I used to read the address of the done IOPB off the VME 2039 * registers and calculate the rqno directly from that. that worked 2040 * until I started putting a load on the controller. when loaded, i 2041 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2042 * be set, even after DELAY'ing a while! later on the timeout 2043 * routine would detect IOPBs that were marked "running" but their 2044 * "done" bit was set. rather than dealing directly with this 2045 * problem, it is just easier to look at all running IOPB's for the 2046 * done bit. 2047 */ 2048 if (xdc->xdc_csr & XDC_REMIOPB) { 2049 xdc->xdc_csr = XDC_CLRRIO; 2050 } 2051 2052 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2053 iorq = &xdcsc->reqs[rqno]; 2054 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2055 continue; /* free, or done */ 2056 iopb = &xdcsc->iopbase[rqno]; 2057 if (iopb->done == 0) 2058 continue; /* not done yet */ 2059 2060 #ifdef XDC_DEBUG 2061 { 2062 u_char *rio = (u_char *) iopb; 2063 int sz = sizeof(struct xd_iopb), lcv; 2064 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2065 for (lcv = 0; lcv < sz; lcv++) 2066 printf(" %02x", rio[lcv]); 2067 printf("]\n"); 2068 } 2069 #endif /* XDC_DEBUG */ 2070 2071 xdcsc->nrun--; 2072 2073 comm = iopb->comm; 2074 errs = iopb->errs; 2075 2076 if (errs) 2077 iorq->errno = iopb->errno; 2078 else 2079 iorq->errno = 0; 2080 2081 /* handle non-fatal errors */ 2082 2083 if (errs && 2084 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2085 continue; /* AOK: we resubmitted it */ 2086 2087 2088 /* this iorq is now done (hasn't been restarted or anything) */ 2089 2090 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2091 xdc_perror(iorq, iopb, 0); 2092 2093 /* now, if read/write check to make sure we got all the data 2094 * we needed. (this may not be the case if we got an error in 2095 * the middle of a multisector request). */ 2096 2097 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2098 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2099 /* we just successfully processed a bad144 sector 2100 * note: if we are in bad 144 mode, the pointers have 2101 * been advanced already (see above) and are pointing 2102 * at the bad144 sector. to exit bad144 mode, we 2103 * must advance the pointers 1 sector and issue a new 2104 * request if there are still sectors left to process 2105 * 2106 */ 2107 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2108 2109 /* exit b144 mode */ 2110 iorq->mode = iorq->mode & (~XD_MODE_B144); 2111 2112 if (iorq->sectcnt) { /* more to go! */ 2113 iorq->lasterror = iorq->errno = iopb->errno = 0; 2114 iopb->errs = iopb->done = 0; 2115 iorq->tries = 0; 2116 iopb->sectcnt = iorq->sectcnt; 2117 iopb->cylno = iorq->blockno / 2118 iorq->xd->sectpercyl; 2119 iopb->headno = 2120 (iorq->blockno / iorq->xd->nhead) % 2121 iorq->xd->nhead; 2122 iopb->sectno = iorq->blockno % XDFM_BPS; 2123 iopb->daddr = (u_long) iorq->dbuf; 2124 XDC_HWAIT(xdcsc, rqno); 2125 xdc_start(xdcsc, 1); /* resubmit */ 2126 continue; 2127 } 2128 } 2129 /* final cleanup, totally done with this request */ 2130 2131 switch (XD_STATE(iorq->mode)) { 2132 case XD_SUB_NORM: 2133 bp = iorq->buf; 2134 if (errs) { 2135 bp->b_error = EIO; 2136 bp->b_flags |= B_ERROR; 2137 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2138 } else { 2139 bp->b_resid = 0; /* done */ 2140 } 2141 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2142 iorq->dmamap->dm_mapsize, 2143 (bp->b_flags & B_READ) 2144 ? BUS_DMASYNC_POSTREAD 2145 : BUS_DMASYNC_POSTWRITE); 2146 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2147 2148 disk_unbusy(&iorq->xd->sc_dk, 2149 (bp->b_bcount - bp->b_resid), 2150 (bp->b_flags & B_READ)); 2151 XDC_FREE(xdcsc, rqno); 2152 biodone(bp); 2153 break; 2154 case XD_SUB_WAIT: 2155 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2156 xdcsc->ndone++; 2157 wakeup(iorq); 2158 break; 2159 case XD_SUB_POLL: 2160 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2161 xdcsc->ndone++; 2162 break; 2163 } 2164 } 2165 2166 return (XD_ERR_AOK); 2167 } 2168 2169 /* 2170 * xdc_perror: print error. 2171 * - if still_trying is true: we got an error, retried and got a 2172 * different error. in that case lasterror is the old error, 2173 * and errno is the new one. 2174 * - if still_trying is not true, then if we ever had an error it 2175 * is in lasterror. also, if iorq->errno == 0, then we recovered 2176 * from that error (otherwise iorq->errno == iorq->lasterror). 2177 */ 2178 void 2179 xdc_perror(iorq, iopb, still_trying) 2180 struct xd_iorq *iorq; 2181 struct xd_iopb *iopb; 2182 int still_trying; 2183 2184 { 2185 2186 int error = iorq->lasterror; 2187 2188 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2189 : iorq->xdc->sc_dev.dv_xname); 2190 if (iorq->buf) 2191 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2192 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2193 printf("%s %d/%d/%d: ", 2194 (iopb->comm == XDCMD_RD) ? "read" : "write", 2195 iopb->cylno, iopb->headno, iopb->sectno); 2196 printf("%s", xdc_e2str(error)); 2197 2198 if (still_trying) 2199 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2200 else 2201 if (iorq->errno == 0) 2202 printf(" [recovered in %d tries]", iorq->tries); 2203 2204 printf("\n"); 2205 } 2206 2207 /* 2208 * xdc_error: non-fatal error encountered... recover. 2209 * return AOK if resubmitted, return FAIL if this iopb is done 2210 */ 2211 int 2212 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2213 struct xdc_softc *xdcsc; 2214 struct xd_iorq *iorq; 2215 struct xd_iopb *iopb; 2216 int rqno, comm; 2217 2218 { 2219 int errno = iorq->errno; 2220 int erract = errno & XD_ERA_MASK; 2221 int oldmode, advance; 2222 #ifdef __sparc__ 2223 int i; 2224 #endif 2225 2226 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2227 oldmode = iorq->mode; 2228 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2229 xdcsc->ndone++; 2230 /* make xdc_start ignore us */ 2231 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2232 iorq->mode = oldmode; 2233 xdcsc->ndone--; 2234 } 2235 /* check for read/write to a sector in bad144 table if bad: redirect 2236 * request to bad144 area */ 2237 2238 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2239 (iorq->mode & XD_MODE_B144) == 0) { 2240 advance = iorq->sectcnt - iopb->sectcnt; 2241 XDC_ADVANCE(iorq, advance); 2242 #ifdef __sparc__ 2243 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2244 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2245 iorq->blockno % iorq->xd->nsect)) != -1) { 2246 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2247 * redirect */ 2248 iopb->errno = iopb->done = iopb->errs = 0; 2249 iopb->sectcnt = 1; 2250 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2251 /* second to last acyl */ 2252 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2253 * standard */ 2254 iopb->headno = i / iorq->xd->nhead; 2255 iopb->sectno = i % iorq->xd->nhead; 2256 XDC_HWAIT(xdcsc, rqno); 2257 xdc_start(xdcsc, 1); /* resubmit */ 2258 return (XD_ERR_AOK); /* recovered! */ 2259 } 2260 #endif 2261 } 2262 2263 /* 2264 * it isn't a bad144 sector, must be real error! see if we can retry 2265 * it? 2266 */ 2267 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2268 xdc_perror(iorq, iopb, 1); /* inform of error state 2269 * change */ 2270 iorq->lasterror = errno; 2271 2272 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2273 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2274 iorq->tries++; 2275 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2276 XDC_HWAIT(xdcsc, rqno); 2277 xdc_start(xdcsc, 1); /* restart */ 2278 return (XD_ERR_AOK); /* recovered! */ 2279 } 2280 2281 /* failed to recover from this error */ 2282 return (XD_ERR_FAIL); 2283 } 2284 2285 /* 2286 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2287 */ 2288 void 2289 xdc_tick(arg) 2290 void *arg; 2291 2292 { 2293 struct xdc_softc *xdcsc = arg; 2294 int lcv, s, reset = 0; 2295 #ifdef XDC_DIAG 2296 int wait, run, free, done, whd = 0; 2297 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2298 s = splbio(); 2299 wait = xdcsc->nwait; 2300 run = xdcsc->nrun; 2301 free = xdcsc->nfree; 2302 done = xdcsc->ndone; 2303 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2304 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2305 splx(s); 2306 if (wait + run + free + done != XDC_MAXIOPB) { 2307 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2308 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2309 bzero(mark, sizeof(mark)); 2310 printf("FREE: "); 2311 for (lcv = free; lcv > 0; lcv--) { 2312 printf("%d ", fqc[lcv - 1]); 2313 mark[fqc[lcv - 1]] = 1; 2314 } 2315 printf("\nWAIT: "); 2316 lcv = wait; 2317 while (lcv > 0) { 2318 printf("%d ", wqc[whd]); 2319 mark[wqc[whd]] = 1; 2320 whd = (whd + 1) % XDC_MAXIOPB; 2321 lcv--; 2322 } 2323 printf("\n"); 2324 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2325 if (mark[lcv] == 0) 2326 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2327 lcv, xdcsc->reqs[lcv].mode, 2328 xdcsc->iopbase[lcv].done, 2329 xdcsc->iopbase[lcv].errs, 2330 xdcsc->iopbase[lcv].errno, 2331 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2332 } 2333 } else 2334 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2335 printf("%s: diag: lots of done jobs (%d)\n", 2336 xdcsc->sc_dev.dv_xname, done); 2337 2338 #endif 2339 #ifdef XDC_DEBUG 2340 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2341 xdcsc->sc_dev.dv_xname, 2342 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2343 xdcsc->ndone); 2344 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2345 if (xdcsc->reqs[lcv].mode) 2346 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2347 lcv, 2348 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2349 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2350 } 2351 #endif 2352 2353 /* reduce ttl for each request if one goes to zero, reset xdc */ 2354 s = splbio(); 2355 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2356 if (xdcsc->reqs[lcv].mode == 0 || 2357 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2358 continue; 2359 xdcsc->reqs[lcv].ttl--; 2360 if (xdcsc->reqs[lcv].ttl == 0) 2361 reset = 1; 2362 } 2363 if (reset) { 2364 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2365 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2366 } 2367 splx(s); 2368 2369 /* until next time */ 2370 2371 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2372 } 2373 2374 /* 2375 * xdc_ioctlcmd: this function provides a user level interface to the 2376 * controller via ioctl. this allows "format" programs to be written 2377 * in user code, and is also useful for some debugging. we return 2378 * an error code. called at user priority. 2379 */ 2380 int 2381 xdc_ioctlcmd(xd, dev, xio) 2382 struct xd_softc *xd; 2383 dev_t dev; 2384 struct xd_iocmd *xio; 2385 2386 { 2387 int s, rqno, dummy; 2388 caddr_t dvmabuf = NULL, buf = NULL; 2389 struct xdc_softc *xdcsc; 2390 int rseg, error; 2391 bus_dma_segment_t seg; 2392 2393 /* check sanity of requested command */ 2394 2395 switch (xio->cmd) { 2396 2397 case XDCMD_NOP: /* no op: everything should be zero */ 2398 if (xio->subfn || xio->dptr || xio->dlen || 2399 xio->block || xio->sectcnt) 2400 return (EINVAL); 2401 break; 2402 2403 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2404 case XDCMD_WR: 2405 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2406 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2407 return (EINVAL); 2408 break; 2409 2410 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2411 return (EINVAL); 2412 2413 case XDCMD_WRP: /* write parameters */ 2414 return (EINVAL);/* not useful, except maybe drive 2415 * parameters... but drive parameters should 2416 * go via disklabel changes */ 2417 2418 case XDCMD_RDP: /* read parameters */ 2419 if (xio->subfn != XDFUN_DRV || 2420 xio->dlen || xio->block || xio->dptr) 2421 return (EINVAL); /* allow read drive params to 2422 * get hw_spt */ 2423 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2424 return (0); 2425 break; 2426 2427 case XDCMD_XRD: /* extended read/write */ 2428 case XDCMD_XWR: 2429 2430 switch (xio->subfn) { 2431 2432 case XDFUN_THD:/* track headers */ 2433 if (xio->sectcnt != xd->hw_spt || 2434 (xio->block % xd->nsect) != 0 || 2435 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2436 xio->dptr == NULL) 2437 return (EINVAL); 2438 xio->sectcnt = 0; 2439 break; 2440 2441 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2442 if (xio->cmd == XDCMD_XRD) 2443 return (EINVAL); /* no XDFUN_VFY */ 2444 if (xio->sectcnt || xio->dlen || 2445 (xio->block % xd->nsect) != 0 || xio->dptr) 2446 return (EINVAL); 2447 break; 2448 2449 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2450 return (EINVAL); /* not yet */ 2451 2452 case XDFUN_DM: /* defect map */ 2453 case XDFUN_DMX:/* defect map (alternate location) */ 2454 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2455 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2456 return (EINVAL); 2457 break; 2458 2459 default: 2460 return (EINVAL); 2461 } 2462 break; 2463 2464 case XDCMD_TST: /* diagnostics */ 2465 return (EINVAL); 2466 2467 default: 2468 return (EINVAL);/* ??? */ 2469 } 2470 2471 xdcsc = xd->parent; 2472 2473 /* create DVMA buffer for request if needed */ 2474 if (xio->dlen) { 2475 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2476 &seg, &rseg, 2477 xio->dlen, &buf, 2478 (bus_addr_t *)&dvmabuf)) != 0) { 2479 return (error); 2480 } 2481 2482 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2483 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2484 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2485 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2486 return (error); 2487 } 2488 } 2489 } 2490 2491 /* do it! */ 2492 2493 error = 0; 2494 s = splbio(); 2495 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2496 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2497 if (rqno == XD_ERR_FAIL) { 2498 error = EIO; 2499 goto done; 2500 } 2501 xio->errno = xdcsc->reqs[rqno].errno; 2502 xio->tries = xdcsc->reqs[rqno].tries; 2503 XDC_DONE(xdcsc, rqno, dummy); 2504 2505 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2506 error = copyout(buf, xio->dptr, xio->dlen); 2507 2508 done: 2509 splx(s); 2510 if (dvmabuf) { 2511 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2512 xio->dlen, buf); 2513 } 2514 return (error); 2515 } 2516 2517 /* 2518 * xdc_e2str: convert error code number into an error string 2519 */ 2520 char * 2521 xdc_e2str(no) 2522 int no; 2523 { 2524 switch (no) { 2525 case XD_ERR_FAIL: 2526 return ("Software fatal error"); 2527 case XD_ERR_AOK: 2528 return ("Successful completion"); 2529 case XD_ERR_ICYL: 2530 return ("Illegal cylinder address"); 2531 case XD_ERR_IHD: 2532 return ("Illegal head address"); 2533 case XD_ERR_ISEC: 2534 return ("Illgal sector address"); 2535 case XD_ERR_CZER: 2536 return ("Count zero"); 2537 case XD_ERR_UIMP: 2538 return ("Unimplemented command"); 2539 case XD_ERR_IF1: 2540 return ("Illegal field length 1"); 2541 case XD_ERR_IF2: 2542 return ("Illegal field length 2"); 2543 case XD_ERR_IF3: 2544 return ("Illegal field length 3"); 2545 case XD_ERR_IF4: 2546 return ("Illegal field length 4"); 2547 case XD_ERR_IF5: 2548 return ("Illegal field length 5"); 2549 case XD_ERR_IF6: 2550 return ("Illegal field length 6"); 2551 case XD_ERR_IF7: 2552 return ("Illegal field length 7"); 2553 case XD_ERR_ISG: 2554 return ("Illegal scatter/gather length"); 2555 case XD_ERR_ISPT: 2556 return ("Not enough sectors per track"); 2557 case XD_ERR_ALGN: 2558 return ("Next IOPB address alignment error"); 2559 case XD_ERR_SGAL: 2560 return ("Scatter/gather address alignment error"); 2561 case XD_ERR_SGEC: 2562 return ("Scatter/gather with auto-ECC"); 2563 case XD_ERR_SECC: 2564 return ("Soft ECC corrected"); 2565 case XD_ERR_SIGN: 2566 return ("ECC ignored"); 2567 case XD_ERR_ASEK: 2568 return ("Auto-seek retry recovered"); 2569 case XD_ERR_RTRY: 2570 return ("Soft retry recovered"); 2571 case XD_ERR_HECC: 2572 return ("Hard data ECC"); 2573 case XD_ERR_NHDR: 2574 return ("Header not found"); 2575 case XD_ERR_NRDY: 2576 return ("Drive not ready"); 2577 case XD_ERR_TOUT: 2578 return ("Operation timeout"); 2579 case XD_ERR_VTIM: 2580 return ("VMEDMA timeout"); 2581 case XD_ERR_DSEQ: 2582 return ("Disk sequencer error"); 2583 case XD_ERR_HDEC: 2584 return ("Header ECC error"); 2585 case XD_ERR_RVFY: 2586 return ("Read verify"); 2587 case XD_ERR_VFER: 2588 return ("Fatail VMEDMA error"); 2589 case XD_ERR_VBUS: 2590 return ("VMEbus error"); 2591 case XD_ERR_DFLT: 2592 return ("Drive faulted"); 2593 case XD_ERR_HECY: 2594 return ("Header error/cyliner"); 2595 case XD_ERR_HEHD: 2596 return ("Header error/head"); 2597 case XD_ERR_NOCY: 2598 return ("Drive not on-cylinder"); 2599 case XD_ERR_SEEK: 2600 return ("Seek error"); 2601 case XD_ERR_ILSS: 2602 return ("Illegal sector size"); 2603 case XD_ERR_SEC: 2604 return ("Soft ECC"); 2605 case XD_ERR_WPER: 2606 return ("Write-protect error"); 2607 case XD_ERR_IRAM: 2608 return ("IRAM self test failure"); 2609 case XD_ERR_MT3: 2610 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2611 case XD_ERR_MT4: 2612 return ("Maintenance test 4 failure (header shift reg)"); 2613 case XD_ERR_MT5: 2614 return ("Maintenance test 5 failure (VMEDMA regs)"); 2615 case XD_ERR_MT6: 2616 return ("Maintenance test 6 failure (REGCEL chip)"); 2617 case XD_ERR_MT7: 2618 return ("Maintenance test 7 failure (buffer parity)"); 2619 case XD_ERR_MT8: 2620 return ("Maintenance test 8 failure (disk FIFO)"); 2621 case XD_ERR_IOCK: 2622 return ("IOPB checksum miscompare"); 2623 case XD_ERR_IODM: 2624 return ("IOPB DMA fatal"); 2625 case XD_ERR_IOAL: 2626 return ("IOPB address alignment error"); 2627 case XD_ERR_FIRM: 2628 return ("Firmware error"); 2629 case XD_ERR_MMOD: 2630 return ("Illegal maintenance mode test number"); 2631 case XD_ERR_ACFL: 2632 return ("ACFAIL asserted"); 2633 default: 2634 return ("Unknown error"); 2635 } 2636 } 2637