1 /* $NetBSD: xd.c,v 1.95 2015/04/26 15:15:20 mlelstv Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Charles D. Cranor 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * 30 * 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 31 * 32 * author: Chuck Cranor <chuck@netbsd> 33 * started: 27-Feb-95 34 * references: [1] Xylogics Model 753 User's Manual 35 * part number: 166-753-001, Revision B, May 21, 1988. 36 * "Your Partner For Performance" 37 * [2] other NetBSD disk device drivers 38 * 39 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 40 * the time to answer some of my questions about the 753/7053. 41 * 42 * note: the 753 and the 7053 are programmed the same way, but are 43 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 44 * VME card (found in many VME based suns). 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: xd.c,v 1.95 2015/04/26 15:15:20 mlelstv Exp $"); 49 50 #undef XDC_DEBUG /* full debug */ 51 #define XDC_DIAG /* extra sanity checks */ 52 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 53 #define XDC_DIAG /* link in with master DIAG option */ 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/proc.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/dkbad.h> 72 #include <sys/conf.h> 73 #include <sys/kauth.h> 74 75 #include <sys/bus.h> 76 #include <sys/intr.h> 77 78 #if defined(__sparc__) || defined(sun3) 79 #include <dev/sun/disklabel.h> 80 #endif 81 82 #include <dev/vme/vmereg.h> 83 #include <dev/vme/vmevar.h> 84 85 #include <dev/vme/xdreg.h> 86 #include <dev/vme/xdvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 97 */ 98 #define XDC_TWAIT(SC, N) { \ 99 (SC)->waitq[(SC)->waitend] = (N); \ 100 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 101 (SC)->nwait++; \ 102 } 103 104 /* 105 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 106 */ 107 #define XDC_HWAIT(SC, N) { \ 108 (SC)->waithead = ((SC)->waithead == 0) ? \ 109 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 110 (SC)->waitq[(SC)->waithead] = (N); \ 111 (SC)->nwait++; \ 112 } 113 114 /* 115 * XDC_GET_WAITER: gets the first request waiting on the waitq 116 * and removes it (so it can be submitted) 117 */ 118 #define XDC_GET_WAITER(XDCSC, RQ) { \ 119 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 120 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 121 xdcsc->nwait--; \ 122 } 123 124 /* 125 * XDC_FREE: add iorq "N" to SC's free list 126 */ 127 #define XDC_FREE(SC, N) { \ 128 (SC)->freereq[(SC)->nfree++] = (N); \ 129 (SC)->reqs[N].mode = 0; \ 130 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 131 } 132 133 134 /* 135 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 136 */ 137 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 138 139 /* 140 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 141 */ 142 #define XDC_GO(XDC, ADDR) { \ 143 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 144 (ADDR) = ((ADDR) >> 8); \ 145 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 146 (ADDR) = ((ADDR) >> 8); \ 147 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 148 (ADDR) = ((ADDR) >> 8); \ 149 (XDC)->xdc_iopbaddr3 = (ADDR); \ 150 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 151 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 152 } 153 154 /* 155 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 156 * LCV is a counter. If it goes to zero then we timed out. 157 */ 158 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 159 (LCV) = (TIME); \ 160 while ((LCV) > 0) { \ 161 if ((XDC)->xdc_csr & (BITS)) break; \ 162 (LCV) = (LCV) - 1; \ 163 DELAY(1); \ 164 } \ 165 } 166 167 /* 168 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 169 */ 170 #define XDC_DONE(SC,RQ,ER) { \ 171 if ((RQ) == XD_ERR_FAIL) { \ 172 (ER) = (RQ); \ 173 } else { \ 174 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 175 wakeup(&(SC)->ndone); \ 176 (ER) = (SC)->reqs[RQ].errnum; \ 177 XDC_FREE((SC), (RQ)); \ 178 } \ 179 } 180 181 /* 182 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 183 */ 184 #define XDC_ADVANCE(IORQ, N) { \ 185 if (N) { \ 186 (IORQ)->sectcnt -= (N); \ 187 (IORQ)->blockno += (N); \ 188 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 189 } \ 190 } 191 192 /* 193 * note - addresses you can sleep on: 194 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 195 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 196 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 197 * to drop below XDC_SUBWAITLIM) 198 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 199 */ 200 201 202 /* 203 * function prototypes 204 * "xdc_*" functions are internal, all others are external interfaces 205 */ 206 207 extern int pil_to_vme[]; /* from obio.c */ 208 209 /* internals */ 210 int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 211 const char *xdc_e2str(int); 212 int xdc_error(struct xdc_softc *, struct xd_iorq *, 213 struct xd_iopb *, int, int); 214 int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 215 void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 216 int xdc_piodriver(struct xdc_softc *, int, int); 217 int xdc_remove_iorq(struct xdc_softc *); 218 int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 219 inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, 220 struct xd_softc *, int, u_long, int, 221 void *, struct buf *); 222 void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 223 void xdc_start(struct xdc_softc *, int); 224 int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 225 int xdc_submit_iorq(struct xdc_softc *, int, int); 226 void xdc_tick(void *); 227 void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 228 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 229 int *, bus_size_t, void **, bus_addr_t *); 230 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 231 int, bus_size_t, void *); 232 233 234 /* machine interrupt hook */ 235 int xdcintr(void *); 236 237 /* autoconf */ 238 int xdcmatch(device_t, cfdata_t, void *); 239 void xdcattach(device_t, device_t, void *); 240 int xdmatch(device_t, cfdata_t, void *); 241 void xdattach(device_t, device_t, void *); 242 static int xdc_probe(void *, bus_space_tag_t, bus_space_handle_t); 243 244 static void xddummystrat(struct buf *); 245 int xdgetdisklabel(struct xd_softc *, void *); 246 247 /* XXX - think about this more.. xd_machdep? */ 248 void xdc_md_setup(void); 249 int XDC_DELAY; 250 251 #if defined(__sparc__) 252 #include <sparc/sparc/vaddrs.h> 253 #include <sparc/sparc/cpuvar.h> 254 void xdc_md_setup(void) 255 { 256 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 257 XDC_DELAY = XDC_DELAY_4_300; 258 else 259 XDC_DELAY = XDC_DELAY_SPARC; 260 } 261 #elif defined(sun3) 262 void xdc_md_setup(void) 263 { 264 XDC_DELAY = XDC_DELAY_SUN3; 265 } 266 #else 267 void xdc_md_setup(void) 268 { 269 XDC_DELAY = 0; 270 } 271 #endif 272 273 /* 274 * cfattach's: device driver interface to autoconfig 275 */ 276 277 CFATTACH_DECL_NEW(xdc, sizeof(struct xdc_softc), 278 xdcmatch, xdcattach, NULL, NULL); 279 280 CFATTACH_DECL_NEW(xd, sizeof(struct xd_softc), 281 xdmatch, xdattach, NULL, NULL); 282 283 extern struct cfdriver xd_cd; 284 285 dev_type_open(xdopen); 286 dev_type_close(xdclose); 287 dev_type_read(xdread); 288 dev_type_write(xdwrite); 289 dev_type_ioctl(xdioctl); 290 dev_type_strategy(xdstrategy); 291 dev_type_dump(xddump); 292 dev_type_size(xdsize); 293 294 const struct bdevsw xd_bdevsw = { 295 .d_open = xdopen, 296 .d_close = xdclose, 297 .d_strategy = xdstrategy, 298 .d_ioctl = xdioctl, 299 .d_dump = xddump, 300 .d_psize = xdsize, 301 .d_discard = nodiscard, 302 .d_flag = D_DISK 303 }; 304 305 const struct cdevsw xd_cdevsw = { 306 .d_open = xdopen, 307 .d_close = xdclose, 308 .d_read = xdread, 309 .d_write = xdwrite, 310 .d_ioctl = xdioctl, 311 .d_stop = nostop, 312 .d_tty = notty, 313 .d_poll = nopoll, 314 .d_mmap = nommap, 315 .d_kqfilter = nokqfilter, 316 .d_discard = nodiscard, 317 .d_flag = D_DISK 318 }; 319 320 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 321 int driveno; /* unit number */ 322 int fullmode; /* submit mode */ 323 int booting; /* are we booting or not? */ 324 }; 325 326 /* 327 * dkdriver 328 */ 329 330 struct dkdriver xddkdriver = { 331 .d_strategy = xdstrategy 332 }; 333 334 /* 335 * start: disk label fix code (XXX) 336 */ 337 338 static void *xd_labeldata; 339 340 static void 341 xddummystrat(struct buf *bp) 342 { 343 if (bp->b_bcount != XDFM_BPS) 344 panic("xddummystrat"); 345 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 346 bp->b_oflags |= BO_DONE; 347 bp->b_cflags &= ~BC_BUSY; 348 } 349 350 int 351 xdgetdisklabel(struct xd_softc *xd, void *b) 352 { 353 const char *err; 354 #if defined(__sparc__) || defined(sun3) 355 struct sun_disklabel *sdl; 356 #endif 357 358 /* We already have the label data in `b'; setup for dummy strategy */ 359 xd_labeldata = b; 360 361 /* Required parameter for readdisklabel() */ 362 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 363 364 err = readdisklabel(MAKEDISKDEV(0, device_unit(xd->sc_dev), RAW_PART), 365 xddummystrat, 366 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 367 if (err) { 368 aprint_error_dev(xd->sc_dev, "%s\n", err); 369 return(XD_ERR_FAIL); 370 } 371 372 #if defined(__sparc__) || defined(sun3) 373 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 374 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 375 if (sdl->sl_magic == SUN_DKMAGIC) { 376 xd->pcyl = sdl->sl_pcylinders; 377 } else 378 #endif 379 { 380 printf("%s: WARNING: no `pcyl' in disk label.\n", 381 device_xname(xd->sc_dev)); 382 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 383 xd->sc_dk.dk_label->d_acylinders; 384 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 385 device_xname(xd->sc_dev), xd->pcyl); 386 } 387 388 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 389 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 390 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 391 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 392 xd->sectpercyl = xd->nhead * xd->nsect; 393 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 394 * sun->bsd */ 395 return(XD_ERR_AOK); 396 } 397 398 /* 399 * end: disk label fix code (XXX) 400 */ 401 402 /* 403 * Shorthand for allocating, mapping and loading a DMA buffer 404 */ 405 int 406 xd_dmamem_alloc(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int *nsegp, bus_size_t len, void * *kvap, bus_addr_t *dmap) 407 { 408 int nseg; 409 int error; 410 411 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 412 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 413 return (error); 414 } 415 416 if ((error = bus_dmamem_map(tag, seg, nseg, 417 len, kvap, 418 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 419 bus_dmamem_free(tag, seg, nseg); 420 return (error); 421 } 422 423 if ((error = bus_dmamap_load(tag, map, 424 *kvap, len, NULL, 425 BUS_DMA_NOWAIT)) != 0) { 426 bus_dmamem_unmap(tag, *kvap, len); 427 bus_dmamem_free(tag, seg, nseg); 428 return (error); 429 } 430 431 *dmap = map->dm_segs[0].ds_addr; 432 *nsegp = nseg; 433 return (0); 434 } 435 436 void 437 xd_dmamem_free(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int nseg, bus_size_t len, void * kva) 438 { 439 440 bus_dmamap_unload(tag, map); 441 bus_dmamem_unmap(tag, kva, len); 442 bus_dmamem_free(tag, seg, nseg); 443 } 444 445 446 /* 447 * a u t o c o n f i g f u n c t i o n s 448 */ 449 450 /* 451 * xdcmatch: determine if xdc is present or not. we do a 452 * soft reset to detect the xdc. 453 */ 454 455 int 456 xdc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 457 { 458 struct xdc *xdc = (void *)handle; /* XXX */ 459 int del = 0; 460 461 xdc->xdc_csr = XDC_RESET; 462 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 463 return (del > 0 ? 0 : EIO); 464 } 465 466 int 467 xdcmatch(device_t parent, cfdata_t cf, void *aux) 468 { 469 struct vme_attach_args *va = aux; 470 vme_chipset_tag_t ct = va->va_vct; 471 vme_am_t mod; 472 int error; 473 474 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 475 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 476 return (0); 477 478 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 479 mod, VME_D32, xdc_probe, 0); 480 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 481 482 return (error == 0); 483 } 484 485 /* 486 * xdcattach: attach controller 487 */ 488 void 489 xdcattach(device_t parent, device_t self, void *aux) 490 { 491 struct vme_attach_args *va = aux; 492 vme_chipset_tag_t ct = va->va_vct; 493 bus_space_tag_t bt; 494 bus_space_handle_t bh; 495 vme_intr_handle_t ih; 496 vme_am_t mod; 497 struct xdc_softc *xdc = device_private(self); 498 struct xdc_attach_args xa; 499 int lcv, rqno, error; 500 struct xd_iopb_ctrl *ctl; 501 bus_dma_segment_t seg; 502 int rseg; 503 vme_mapresc_t resc; 504 bus_addr_t busaddr; 505 506 xdc->sc_dev = self; 507 xdc_md_setup(); 508 509 /* get addressing and intr level stuff from autoconfig and load it 510 * into our xdc_softc. */ 511 512 xdc->dmatag = va->va_bdt; 513 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 514 515 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 516 panic("xdc: vme alloc"); 517 518 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 519 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 520 panic("xdc: vme_map"); 521 522 xdc->xdc = (struct xdc *) bh; /* XXX */ 523 xdc->ipl = va->ilevel; 524 xdc->vector = va->ivector; 525 526 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 527 xdc->sc_drives[lcv] = NULL; 528 529 /* 530 * allocate and zero buffers 531 * 532 * note: we simplify the code by allocating the max number of iopbs and 533 * iorq's up front. thus, we avoid linked lists and the costs 534 * associated with them in exchange for wasting a little memory. 535 */ 536 537 /* Get DMA handle for misc. transfers */ 538 if ((error = vme_dmamap_create( 539 ct, /* VME chip tag */ 540 MAXPHYS, /* size */ 541 VME_AM_A24, /* address modifier */ 542 VME_D32, /* data size */ 543 0, /* swap */ 544 1, /* nsegments */ 545 MAXPHYS, /* maxsegsz */ 546 0, /* boundary */ 547 BUS_DMA_NOWAIT, 548 &xdc->auxmap)) != 0) { 549 550 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 551 error); 552 return; 553 } 554 555 556 /* Get DMA handle for mapping iorq descriptors */ 557 if ((error = vme_dmamap_create( 558 ct, /* VME chip tag */ 559 XDC_MAXIOPB * sizeof(struct xd_iopb), 560 VME_AM_A24, /* address modifier */ 561 VME_D32, /* data size */ 562 0, /* swap */ 563 1, /* nsegments */ 564 XDC_MAXIOPB * sizeof(struct xd_iopb), 565 0, /* boundary */ 566 BUS_DMA_NOWAIT, 567 &xdc->iopmap)) != 0) { 568 569 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 570 error); 571 return; 572 } 573 574 /* Get DMA buffer for iorq descriptors */ 575 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 576 XDC_MAXIOPB * sizeof(struct xd_iopb), 577 (void **)&xdc->iopbase, 578 &busaddr)) != 0) { 579 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 580 error); 581 return; 582 } 583 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 584 585 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 586 587 xdc->reqs = (struct xd_iorq *) 588 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 589 M_DEVBUF, M_NOWAIT|M_ZERO); 590 if (xdc->reqs == NULL) 591 panic("xdc malloc"); 592 593 /* init free list, iorq to iopb pointers, and non-zero fields in the 594 * iopb which never change. */ 595 596 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 597 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 598 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 599 xdc->freereq[lcv] = lcv; 600 xdc->iopbase[lcv].fixd = 1; /* always the same */ 601 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 602 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 603 604 if ((error = vme_dmamap_create( 605 ct, /* VME chip tag */ 606 MAXPHYS, /* size */ 607 VME_AM_A24, /* address modifier */ 608 VME_D32, /* data size */ 609 0, /* swap */ 610 1, /* nsegments */ 611 MAXPHYS, /* maxsegsz */ 612 0, /* boundary */ 613 BUS_DMA_NOWAIT, 614 &xdc->reqs[lcv].dmamap)) != 0) { 615 616 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 617 error); 618 return; 619 } 620 } 621 xdc->nfree = XDC_MAXIOPB; 622 xdc->nrun = 0; 623 xdc->waithead = xdc->waitend = xdc->nwait = 0; 624 xdc->ndone = 0; 625 626 /* init queue of waiting bufs */ 627 628 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 629 callout_init(&xdc->sc_tick_ch, 0); 630 631 /* 632 * section 7 of the manual tells us how to init the controller: 633 * - read controller parameters (6/0) 634 * - write controller parameters (5/0) 635 */ 636 637 /* read controller parameters and insure we have a 753/7053 */ 638 639 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 640 if (rqno == XD_ERR_FAIL) { 641 printf(": couldn't read controller params\n"); 642 return; /* shouldn't ever happen */ 643 } 644 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 645 if (ctl->ctype != XDCT_753) { 646 if (xdc->reqs[rqno].errnum) 647 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errnum)); 648 printf(": doesn't identify as a 753/7053\n"); 649 XDC_DONE(xdc, rqno, error); 650 return; 651 } 652 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 653 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 654 XDC_DONE(xdc, rqno, error); 655 656 /* now write controller parameters (xdc_cmd sets all params for us) */ 657 658 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 659 XDC_DONE(xdc, rqno, error); 660 if (error) { 661 aprint_error_dev(xdc->sc_dev, "controller config error: %s\n", 662 xdc_e2str(error)); 663 return; 664 } 665 666 /* link in interrupt with higher level software */ 667 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 668 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 669 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 670 device_xname(xdc->sc_dev), "intr"); 671 672 673 /* now we must look for disks using autoconfig */ 674 xa.fullmode = XD_SUB_POLL; 675 xa.booting = 1; 676 677 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 678 (void) config_found(self, (void *) &xa, NULL); 679 680 /* start the watchdog clock */ 681 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 682 683 } 684 685 /* 686 * xdmatch: probe for disk. 687 * 688 * note: we almost always say disk is present. this allows us to 689 * spin up and configure a disk after the system is booted (we can 690 * call xdattach!). 691 */ 692 int 693 xdmatch(device_t parent, cfdata_t cf, void *aux) 694 { 695 struct xdc_attach_args *xa = aux; 696 697 /* looking for autoconf wildcard or exact match */ 698 699 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 700 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 701 return 0; 702 703 return 1; 704 705 } 706 707 /* 708 * xdattach: attach a disk. this can be called from autoconf and also 709 * from xdopen/xdstrategy. 710 */ 711 void 712 xdattach(device_t parent, device_t self, void *aux) 713 { 714 struct xd_softc *xd = device_private(self); 715 struct xdc_softc *xdc = device_private(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 bus_addr_t busaddr; 723 void * dmaddr; 724 char * buf; 725 726 xd->sc_dev = self; 727 728 /* 729 * Always re-initialize the disk structure. We want statistics 730 * to start with a clean slate. 731 */ 732 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 733 734 /* if booting, init the xd_softc */ 735 736 if (xa->booting) { 737 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 738 xd->flags = 0; 739 xd->parent = xdc; 740 } 741 xd->xd_drive = xa->driveno; 742 fmode = xa->fullmode; 743 xdc->sc_drives[xa->driveno] = xd; 744 745 /* if not booting, make sure we are the only process in the attach for 746 * this drive. if locked out, sleep on it. */ 747 748 if (!xa->booting) { 749 s = splbio(); 750 while (xd->state == XD_DRIVE_ATTACHING) { 751 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 752 splx(s); 753 return; 754 } 755 } 756 printf("%s at %s", 757 device_xname(xd->sc_dev), device_xname(xd->parent->sc_dev)); 758 } 759 760 /* we now have control */ 761 xd->state = XD_DRIVE_ATTACHING; 762 newstate = XD_DRIVE_UNKNOWN; 763 764 buf = NULL; 765 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 766 XDFM_BPS, 767 (void **)&buf, 768 &busaddr)) != 0) { 769 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 770 error); 771 return; 772 } 773 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 774 775 /* first try and reset the drive */ 776 777 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 778 XDC_DONE(xdc, rqno, error); 779 if (error == XD_ERR_NRDY) { 780 printf(" drive %d: off-line\n", xa->driveno); 781 goto done; 782 } 783 if (error) { 784 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 785 goto done; 786 } 787 printf(" drive %d: ready\n", xa->driveno); 788 789 /* now set format parameters */ 790 791 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 792 XDC_DONE(xdc, rqno, error); 793 if (error) { 794 aprint_error_dev(xd->sc_dev, "write format parameters failed: %s\n", 795 xdc_e2str(error)); 796 goto done; 797 } 798 799 /* get drive parameters */ 800 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 801 if (rqno != XD_ERR_FAIL) { 802 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 803 spt = driopb->sectpertrk; 804 } 805 XDC_DONE(xdc, rqno, error); 806 if (error) { 807 aprint_error_dev(xd->sc_dev, "read drive parameters failed: %s\n", 808 xdc_e2str(error)); 809 goto done; 810 } 811 812 /* 813 * now set drive parameters (to semi-bogus values) so we can read the 814 * disk label. 815 */ 816 xd->pcyl = xd->ncyl = 1; 817 xd->acyl = 0; 818 xd->nhead = 1; 819 xd->nsect = 1; 820 xd->sectpercyl = 1; 821 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 822 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 823 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 824 XDC_DONE(xdc, rqno, error); 825 if (error) { 826 aprint_error_dev(xd->sc_dev, "write drive parameters failed: %s\n", 827 xdc_e2str(error)); 828 goto done; 829 } 830 831 /* read disk label */ 832 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 833 XDC_DONE(xdc, rqno, error); 834 if (error) { 835 aprint_error_dev(xd->sc_dev, "reading disk label failed: %s\n", 836 xdc_e2str(error)); 837 goto done; 838 } 839 newstate = XD_DRIVE_NOLABEL; 840 841 xd->hw_spt = spt; 842 /* Attach the disk: must be before getdisklabel to malloc label */ 843 disk_init(&xd->sc_dk, device_xname(xd->sc_dev), &xddkdriver); 844 disk_attach(&xd->sc_dk); 845 846 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 847 goto done; 848 849 /* inform the user of what is up */ 850 printf("%s: <%s>, pcyl %d, hw_spt %d\n", device_xname(xd->sc_dev), 851 buf, xd->pcyl, spt); 852 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 853 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 854 device_xname(xd->sc_dev), mb, xd->ncyl, xd->nhead, xd->nsect, 855 XDFM_BPS); 856 857 /* now set the real drive parameters! */ 858 859 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 860 XDC_DONE(xdc, rqno, error); 861 if (error) { 862 aprint_error_dev(xd->sc_dev, "write real drive parameters failed: %s\n", 863 xdc_e2str(error)); 864 goto done; 865 } 866 newstate = XD_DRIVE_ONLINE; 867 868 /* 869 * read bad144 table. this table resides on the first sector of the 870 * last track of the disk (i.e. second cyl of "acyl" area). 871 */ 872 873 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 874 (xd->nhead - 1) * xd->nsect; /* last head */ 875 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 876 XDC_DONE(xdc, rqno, error); 877 if (error) { 878 aprint_error_dev(xd->sc_dev, "reading bad144 failed: %s\n", 879 xdc_e2str(error)); 880 goto done; 881 } 882 883 /* check dkbad for sanity */ 884 dkb = (struct dkbad *) buf; 885 for (lcv = 0; lcv < 126; lcv++) { 886 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 887 dkb->bt_bad[lcv].bt_cyl == 0) && 888 dkb->bt_bad[lcv].bt_trksec == 0xffff) 889 continue; /* blank */ 890 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 891 break; 892 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 893 break; 894 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 895 break; 896 } 897 if (lcv != 126) { 898 aprint_error_dev(xd->sc_dev, "warning: invalid bad144 sector!\n"); 899 } else { 900 memcpy(&xd->dkb, buf, XDFM_BPS); 901 } 902 903 done: 904 if (buf != NULL) { 905 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 906 &seg, rseg, XDFM_BPS, buf); 907 } 908 909 xd->state = newstate; 910 if (!xa->booting) { 911 wakeup(&xd->state); 912 splx(s); 913 } 914 } 915 916 /* 917 * end of autoconfig functions 918 */ 919 920 /* 921 * { b , c } d e v s w f u n c t i o n s 922 */ 923 924 /* 925 * xdclose: close device 926 */ 927 int 928 xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 929 { 930 struct xd_softc *xd = device_lookup_private(&xd_cd, DISKUNIT(dev)); 931 int part = DISKPART(dev); 932 933 /* clear mask bits */ 934 935 switch (fmt) { 936 case S_IFCHR: 937 xd->sc_dk.dk_copenmask &= ~(1 << part); 938 break; 939 case S_IFBLK: 940 xd->sc_dk.dk_bopenmask &= ~(1 << part); 941 break; 942 } 943 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 944 945 return 0; 946 } 947 948 /* 949 * xddump: crash dump system 950 */ 951 int 952 xddump(dev_t dev, daddr_t blkno, void *va, size_t size) 953 { 954 int unit, part; 955 struct xd_softc *xd; 956 957 unit = DISKUNIT(dev); 958 part = DISKPART(dev); 959 960 xd = device_lookup_private(&xd_cd, unit); 961 if (!xd) 962 return ENXIO; 963 964 printf("%s%c: crash dump not supported (yet)\n", device_xname(xd->sc_dev), 965 'a' + part); 966 967 return ENXIO; 968 969 /* outline: globals: "dumplo" == sector number of partition to start 970 * dump at (convert to physical sector with partition table) 971 * "dumpsize" == size of dump in clicks "physmem" == size of physical 972 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 973 * physmem) 974 * 975 * dump a copy of physical memory to the dump device starting at sector 976 * "dumplo" in the swap partition (make sure > 0). map in pages as 977 * we go. use polled I/O. 978 * 979 * XXX how to handle NON_CONTIG? */ 980 981 } 982 983 static enum kauth_device_req 984 xd_getkauthreq(u_char cmd) 985 { 986 enum kauth_device_req req; 987 988 switch (cmd) { 989 case XDCMD_WR: 990 case XDCMD_XWR: 991 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 992 break; 993 994 case XDCMD_RD: 995 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 996 break; 997 998 case XDCMD_RDP: 999 case XDCMD_XRD: 1000 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 1001 break; 1002 1003 case XDCMD_WRP: 1004 case XDCMD_RST: 1005 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 1006 break; 1007 1008 case XDCMD_NOP: 1009 case XDCMD_SK: 1010 case XDCMD_TST: 1011 default: 1012 req = 0; 1013 break; 1014 } 1015 1016 return (req); 1017 } 1018 1019 /* 1020 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1021 */ 1022 int 1023 xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 1024 1025 { 1026 struct xd_softc *xd; 1027 struct xd_iocmd *xio; 1028 int error, s, unit; 1029 #ifdef __HAVE_OLD_DISKLABEL 1030 struct disklabel newlabel; 1031 #endif 1032 struct disklabel *lp; 1033 1034 unit = DISKUNIT(dev); 1035 1036 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1037 return (ENXIO); 1038 1039 error = disk_ioctl(&xd->sc_dk, dev, command, addr, flag, l); 1040 if (error != EPASSTHROUGH) 1041 return error; 1042 1043 /* switch on ioctl type */ 1044 1045 switch (command) { 1046 case DIOCSBAD: /* set bad144 info */ 1047 if ((flag & FWRITE) == 0) 1048 return EBADF; 1049 s = splbio(); 1050 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 1051 splx(s); 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 enum kauth_device_req req; 1118 1119 xio = (struct xd_iocmd *) addr; 1120 req = xd_getkauthreq(xio->cmd); 1121 if ((error = kauth_authorize_device_passthru(l->l_cred, 1122 dev, req, xio)) != 0) 1123 return (error); 1124 return (xdc_ioctlcmd(xd, dev, xio)); 1125 } 1126 1127 default: 1128 return ENOTTY; 1129 } 1130 } 1131 /* 1132 * xdopen: open drive 1133 */ 1134 1135 int 1136 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1137 { 1138 int unit, part; 1139 struct xd_softc *xd; 1140 struct xdc_attach_args xa; 1141 1142 /* first, could it be a valid target? */ 1143 1144 unit = DISKUNIT(dev); 1145 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1146 return (ENXIO); 1147 part = DISKPART(dev); 1148 1149 /* do we need to attach the drive? */ 1150 1151 if (xd->state == XD_DRIVE_UNKNOWN) { 1152 xa.driveno = xd->xd_drive; 1153 xa.fullmode = XD_SUB_WAIT; 1154 xa.booting = 0; 1155 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1156 if (xd->state == XD_DRIVE_UNKNOWN) { 1157 return (EIO); 1158 } 1159 } 1160 /* check for partition */ 1161 1162 if (part != RAW_PART && 1163 (part >= xd->sc_dk.dk_label->d_npartitions || 1164 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1165 return (ENXIO); 1166 } 1167 /* set open masks */ 1168 1169 switch (fmt) { 1170 case S_IFCHR: 1171 xd->sc_dk.dk_copenmask |= (1 << part); 1172 break; 1173 case S_IFBLK: 1174 xd->sc_dk.dk_bopenmask |= (1 << part); 1175 break; 1176 } 1177 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1178 1179 return 0; 1180 } 1181 1182 int 1183 xdread(dev_t dev, struct uio *uio, int flags) 1184 { 1185 1186 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1187 } 1188 1189 int 1190 xdwrite(dev_t dev, struct uio *uio, int flags) 1191 { 1192 1193 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1194 } 1195 1196 1197 /* 1198 * xdsize: return size of a partition for a dump 1199 */ 1200 1201 int 1202 xdsize(dev_t dev) 1203 { 1204 struct xd_softc *xdsc; 1205 int unit, part, size, omask; 1206 1207 /* valid unit? */ 1208 unit = DISKUNIT(dev); 1209 if ((xdsc = device_lookup_private(&xd_cd, unit)) == NULL) 1210 return (-1); 1211 1212 part = DISKPART(dev); 1213 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1214 1215 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1216 return (-1); 1217 1218 /* do it */ 1219 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1220 size = -1; /* only give valid size for swap partitions */ 1221 else 1222 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1223 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1224 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1225 return (-1); 1226 return (size); 1227 } 1228 /* 1229 * xdstrategy: buffering system interface to xd. 1230 */ 1231 1232 void 1233 xdstrategy(struct buf *bp) 1234 { 1235 struct xd_softc *xd; 1236 struct xdc_softc *parent; 1237 int s, unit; 1238 struct xdc_attach_args xa; 1239 1240 unit = DISKUNIT(bp->b_dev); 1241 1242 /* check for live device */ 1243 1244 if (!(xd = device_lookup_private(&xd_cd, unit)) || 1245 bp->b_blkno < 0 || 1246 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1247 bp->b_error = EINVAL; 1248 goto done; 1249 } 1250 /* do we need to attach the drive? */ 1251 1252 if (xd->state == XD_DRIVE_UNKNOWN) { 1253 xa.driveno = xd->xd_drive; 1254 xa.fullmode = XD_SUB_WAIT; 1255 xa.booting = 0; 1256 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1257 if (xd->state == XD_DRIVE_UNKNOWN) { 1258 bp->b_error = EIO; 1259 goto done; 1260 } 1261 } 1262 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1263 /* no I/O to unlabeled disks, unless raw partition */ 1264 bp->b_error = EIO; 1265 goto done; 1266 } 1267 /* short circuit zero length request */ 1268 1269 if (bp->b_bcount == 0) 1270 goto done; 1271 1272 /* check bounds with label (disksubr.c). Determine the size of the 1273 * transfer, and make sure it is within the boundaries of the 1274 * partition. Adjust transfer if needed, and signal errors or early 1275 * completion. */ 1276 1277 if (bounds_check_with_label(&xd->sc_dk, bp, 1278 (xd->flags & XD_WLABEL) != 0) <= 0) 1279 goto done; 1280 1281 /* 1282 * now we know we have a valid buf structure that we need to do I/O 1283 * on. 1284 * 1285 * note that we don't disksort because the controller has a sorting 1286 * algorithm built into the hardware. 1287 */ 1288 1289 s = splbio(); /* protect the queues */ 1290 1291 /* first, give jobs in front of us a chance */ 1292 parent = xd->parent; 1293 while (parent->nfree > 0 && bufq_peek(parent->sc_wq) != NULL) 1294 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1295 break; 1296 1297 /* if there are no free iorq's, then we just queue and return. the 1298 * buffs will get picked up later by xdcintr(). 1299 */ 1300 1301 if (parent->nfree == 0) { 1302 bufq_put(parent->sc_wq, bp); 1303 splx(s); 1304 return; 1305 } 1306 1307 /* now we have free iopb's and we are at splbio... start 'em up */ 1308 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1309 return; 1310 } 1311 1312 /* done! */ 1313 1314 splx(s); 1315 return; 1316 1317 done: /* tells upper layers we are done with this 1318 * buf */ 1319 bp->b_resid = bp->b_bcount; 1320 biodone(bp); 1321 } 1322 /* 1323 * end of {b,c}devsw functions 1324 */ 1325 1326 /* 1327 * i n t e r r u p t f u n c t i o n 1328 * 1329 * xdcintr: hardware interrupt. 1330 */ 1331 int 1332 xdcintr(void *v) 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_peek(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(struct xd_iorq *rq, struct xdc_softc *xdc, struct xd_softc *xd, int md, u_long blk, int cnt, void *db, struct buf *bp) 1370 { 1371 rq->xdc = xdc; 1372 rq->xd = xd; 1373 rq->ttl = XDC_MAXTTL + 10; 1374 rq->mode = md; 1375 rq->tries = rq->errnum = rq->lasterror = 0; 1376 rq->blockno = blk; 1377 rq->sectcnt = cnt; 1378 rq->dbuf = db; 1379 rq->buf = bp; 1380 } 1381 /* 1382 * xdc_rqtopb: load up an IOPB based on an iorq 1383 */ 1384 1385 void 1386 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1387 { 1388 u_long block, dp; 1389 1390 /* standard stuff */ 1391 1392 iopb->errs = iopb->done = 0; 1393 iopb->comm = cmd; 1394 iopb->errnum = iopb->status = 0; 1395 iopb->subfun = subfun; 1396 if (iorq->xd) 1397 iopb->unit = iorq->xd->xd_drive; 1398 else 1399 iopb->unit = 0; 1400 1401 /* check for alternate IOPB format */ 1402 1403 if (cmd == XDCMD_WRP) { 1404 switch (subfun) { 1405 case XDFUN_CTL:{ 1406 struct xd_iopb_ctrl *ctrl = 1407 (struct xd_iopb_ctrl *) iopb; 1408 iopb->lll = 0; 1409 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1410 ? 0 1411 : iorq->xdc->ipl; 1412 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1413 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1414 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1415 XDPC_RBC | XDPC_ECC2; 1416 ctrl->throttle = XDC_THROTTLE; 1417 ctrl->delay = XDC_DELAY; 1418 break; 1419 } 1420 case XDFUN_DRV:{ 1421 struct xd_iopb_drive *drv = 1422 (struct xd_iopb_drive *)iopb; 1423 /* we assume that the disk label has the right 1424 * info */ 1425 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1426 drv->dparam_ipl = (XDC_DPARAM << 3); 1427 else 1428 drv->dparam_ipl = (XDC_DPARAM << 3) | 1429 iorq->xdc->ipl; 1430 drv->maxsect = iorq->xd->nsect - 1; 1431 drv->maxsector = drv->maxsect; 1432 /* note: maxsector != maxsect only if you are 1433 * doing cyl sparing */ 1434 drv->headoff = 0; 1435 drv->maxcyl = iorq->xd->pcyl - 1; 1436 drv->maxhead = iorq->xd->nhead - 1; 1437 break; 1438 } 1439 case XDFUN_FMT:{ 1440 struct xd_iopb_format *form = 1441 (struct xd_iopb_format *) iopb; 1442 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1443 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1444 else 1445 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1446 iorq->xdc->ipl; 1447 form->field1 = XDFM_FIELD1; 1448 form->field2 = XDFM_FIELD2; 1449 form->field3 = XDFM_FIELD3; 1450 form->field4 = XDFM_FIELD4; 1451 form->bytespersec = XDFM_BPS; 1452 form->field6 = XDFM_FIELD6; 1453 form->field7 = XDFM_FIELD7; 1454 break; 1455 } 1456 } 1457 } else { 1458 1459 /* normal IOPB case (harmless to RDP command) */ 1460 1461 iopb->lll = 0; 1462 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1463 ? 0 1464 : iorq->xdc->ipl; 1465 iopb->sectcnt = iorq->sectcnt; 1466 block = iorq->blockno; 1467 if (iorq->xd == NULL || block == 0) { 1468 iopb->sectno = iopb->headno = iopb->cylno = 0; 1469 } else { 1470 iopb->sectno = block % iorq->xd->nsect; 1471 block = block / iorq->xd->nsect; 1472 iopb->headno = block % iorq->xd->nhead; 1473 block = block / iorq->xd->nhead; 1474 iopb->cylno = block; 1475 } 1476 dp = (u_long) iorq->dbuf; 1477 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1478 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1479 ? XDC_ADDRMOD32 1480 : XDC_ADDRMOD; 1481 } 1482 } 1483 1484 /* 1485 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1486 * If you've already got an IORQ, you can call submit directly (currently 1487 * there is no need to do this). NORM requests are handled separately. 1488 */ 1489 int 1490 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1491 int scnt, char *dptr, int fullmode) 1492 { 1493 int rqno, submode = XD_STATE(fullmode), retry; 1494 struct xd_iorq *iorq; 1495 struct xd_iopb *iopb; 1496 1497 /* get iorq/iopb */ 1498 switch (submode) { 1499 case XD_SUB_POLL: 1500 while (xdcsc->nfree == 0) { 1501 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1502 return (XD_ERR_FAIL); 1503 } 1504 break; 1505 case XD_SUB_WAIT: 1506 retry = 1; 1507 while (retry) { 1508 while (xdcsc->nfree == 0) { 1509 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1510 return (XD_ERR_FAIL); 1511 } 1512 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1513 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1514 return (XD_ERR_FAIL); 1515 } 1516 if (xdcsc->nfree) 1517 retry = 0; /* got it */ 1518 } 1519 break; 1520 default: 1521 return (XD_ERR_FAIL); /* illegal */ 1522 } 1523 if (xdcsc->nfree == 0) 1524 panic("xdcmd nfree"); 1525 rqno = XDC_RQALLOC(xdcsc); 1526 iorq = &xdcsc->reqs[rqno]; 1527 iopb = iorq->iopb; 1528 1529 1530 /* init iorq/iopb */ 1531 1532 xdc_rqinit(iorq, xdcsc, 1533 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1534 fullmode, block, scnt, dptr, NULL); 1535 1536 /* load IOPB from iorq */ 1537 1538 xdc_rqtopb(iorq, iopb, cmd, subfn); 1539 1540 /* submit it for processing */ 1541 1542 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1543 1544 return (rqno); 1545 } 1546 /* 1547 * xdc_startbuf 1548 * start a buffer running, assumes nfree > 0 1549 */ 1550 1551 int 1552 xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1553 { 1554 int rqno, partno; 1555 struct xd_iorq *iorq; 1556 struct xd_iopb *iopb; 1557 u_long block; 1558 /* void *dbuf;*/ 1559 int error; 1560 1561 if (!xdcsc->nfree) 1562 panic("xdc_startbuf free"); 1563 rqno = XDC_RQALLOC(xdcsc); 1564 iorq = &xdcsc->reqs[rqno]; 1565 iopb = iorq->iopb; 1566 1567 /* get buf */ 1568 1569 if (bp == NULL) { 1570 bp = bufq_get(xdcsc->sc_wq); 1571 if (bp == NULL) 1572 panic("xdc_startbuf bp"); 1573 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1574 } 1575 partno = DISKPART(bp->b_dev); 1576 #ifdef XDC_DEBUG 1577 printf("xdc_startbuf: %s%c: %s block %d\n", device_xname(xdsc->sc_dev), 1578 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1579 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1580 bp->b_bcount, bp->b_data); 1581 #endif 1582 1583 /* 1584 * load request. we have to calculate the correct block number based 1585 * on partition info. 1586 * 1587 * note that iorq points to the buffer as mapped into DVMA space, 1588 * where as the bp->b_data points to its non-DVMA mapping. 1589 */ 1590 1591 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1592 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1593 1594 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1595 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1596 if (error != 0) { 1597 aprint_error_dev(xdcsc->sc_dev, "warning: cannot load DMA map\n"); 1598 XDC_FREE(xdcsc, rqno); 1599 bufq_put(xdcsc->sc_wq, bp); 1600 return (XD_ERR_FAIL); /* XXX: need some sort of 1601 * call-back scheme here? */ 1602 } 1603 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1604 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1605 ? BUS_DMASYNC_PREREAD 1606 : BUS_DMASYNC_PREWRITE); 1607 1608 /* init iorq and load iopb from it */ 1609 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1610 bp->b_bcount / XDFM_BPS, 1611 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1612 bp); 1613 1614 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1615 1616 /* Instrumentation. */ 1617 disk_busy(&xdsc->sc_dk); 1618 1619 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1620 1621 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1622 return (XD_ERR_AOK); 1623 } 1624 1625 1626 /* 1627 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1628 * if ok. if it fail returns an error code. type is XD_SUB_*. 1629 * 1630 * note: caller frees iorq in all cases except NORM 1631 * 1632 * return value: 1633 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1634 * WAIT: XD_AOK (success), <error-code> (failed) 1635 * POLL: <same as WAIT> 1636 * NOQ : <same as NORM> 1637 * 1638 * there are three sources for i/o requests: 1639 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1640 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1641 * [3] open/ioctl: these are I/O requests done in the context of a process, 1642 * and the process should block until they are done. 1643 * 1644 * software state is stored in the iorq structure. each iorq has an 1645 * iopb structure. the hardware understands the iopb structure. 1646 * every command must go through an iopb. a 7053 can only handle 1647 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1648 * DVMA space at boot up time. what happens if we run out of iopb's? 1649 * for i/o type [1], the buffers are queued at the "buff" layer and 1650 * picked up later by the interrupt routine. for case [2] the 1651 * programmed i/o driver is called with a special flag that says 1652 * return when one iopb is free. for case [3] the process can sleep 1653 * on the iorq free list until some iopbs are available. 1654 */ 1655 1656 1657 int 1658 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1659 { 1660 u_long iopbaddr; 1661 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1662 1663 #ifdef XDC_DEBUG 1664 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", device_xname(xdcsc->sc_dev), 1665 iorqno, type); 1666 #endif 1667 1668 /* first check and see if controller is busy */ 1669 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1670 #ifdef XDC_DEBUG 1671 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1672 #endif 1673 if (type == XD_SUB_NOQ) 1674 return (XD_ERR_FAIL); /* failed */ 1675 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1676 switch (type) { 1677 case XD_SUB_NORM: 1678 return XD_ERR_AOK; /* success */ 1679 case XD_SUB_WAIT: 1680 while (iorq->iopb->done == 0) { 1681 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1682 } 1683 return (iorq->errnum); 1684 case XD_SUB_POLL: 1685 return (xdc_piodriver(xdcsc, iorqno, 0)); 1686 default: 1687 panic("xdc_submit_iorq adding"); 1688 } 1689 } 1690 #ifdef XDC_DEBUG 1691 { 1692 u_char *rio = (u_char *) iorq->iopb; 1693 int sz = sizeof(struct xd_iopb), lcv; 1694 printf("%s: aio #%d [", 1695 device_xname(xdcsc->sc_dev), iorq - xdcsc->reqs); 1696 for (lcv = 0; lcv < sz; lcv++) 1697 printf(" %02x", rio[lcv]); 1698 printf("]\n"); 1699 } 1700 #endif /* XDC_DEBUG */ 1701 1702 /* controller not busy, start command */ 1703 iopbaddr = (u_long) iorq->dmaiopb; 1704 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1705 xdcsc->nrun++; 1706 /* command now running, wrap it up */ 1707 switch (type) { 1708 case XD_SUB_NORM: 1709 case XD_SUB_NOQ: 1710 return (XD_ERR_AOK); /* success */ 1711 case XD_SUB_WAIT: 1712 while (iorq->iopb->done == 0) { 1713 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1714 } 1715 return (iorq->errnum); 1716 case XD_SUB_POLL: 1717 return (xdc_piodriver(xdcsc, iorqno, 0)); 1718 default: 1719 panic("xdc_submit_iorq wrap up"); 1720 } 1721 panic("xdc_submit_iorq"); 1722 return 0; /* not reached */ 1723 } 1724 1725 1726 /* 1727 * xdc_piodriver 1728 * 1729 * programmed i/o driver. this function takes over the computer 1730 * and drains off all i/o requests. it returns the status of the iorq 1731 * the caller is interesting in. if freeone is true, then it returns 1732 * when there is a free iorq. 1733 */ 1734 int 1735 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1736 { 1737 int nreset = 0; 1738 int retval = 0; 1739 u_long count; 1740 struct xdc *xdc = xdcsc->xdc; 1741 #ifdef XDC_DEBUG 1742 printf("xdc_piodriver(%s, %d, freeone=%d)\n", device_xname(xdcsc->sc_dev), 1743 iorqno, freeone); 1744 #endif 1745 1746 while (xdcsc->nwait || xdcsc->nrun) { 1747 #ifdef XDC_DEBUG 1748 printf("xdc_piodriver: wait=%d, run=%d\n", 1749 xdcsc->nwait, xdcsc->nrun); 1750 #endif 1751 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1752 #ifdef XDC_DEBUG 1753 printf("xdc_piodriver: done wait with count = %d\n", count); 1754 #endif 1755 /* we expect some progress soon */ 1756 if (count == 0 && nreset >= 2) { 1757 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1758 #ifdef XDC_DEBUG 1759 printf("xdc_piodriver: timeout\n"); 1760 #endif 1761 return (XD_ERR_FAIL); 1762 } 1763 if (count == 0) { 1764 if (xdc_reset(xdcsc, 0, 1765 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1766 XD_ERR_FAIL, 1767 0) == XD_ERR_FAIL) 1768 return (XD_ERR_FAIL); /* flushes all but POLL 1769 * requests, resets */ 1770 continue; 1771 } 1772 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1773 if (freeone) { 1774 if (xdcsc->nrun < XDC_MAXIOPB) { 1775 #ifdef XDC_DEBUG 1776 printf("xdc_piodriver: done: one free\n"); 1777 #endif 1778 return (XD_ERR_AOK); 1779 } 1780 continue; /* don't xdc_start */ 1781 } 1782 xdc_start(xdcsc, XDC_MAXIOPB); 1783 } 1784 1785 /* get return value */ 1786 1787 retval = xdcsc->reqs[iorqno].errnum; 1788 1789 #ifdef XDC_DEBUG 1790 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1791 xdcsc->reqs[iorqno].errnum, xdc_e2str(xdcsc->reqs[iorqno].errnum)); 1792 #endif 1793 1794 /* now that we've drained everything, start up any bufs that have 1795 * queued */ 1796 1797 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1798 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1799 break; 1800 1801 return (retval); 1802 } 1803 1804 /* 1805 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1806 * we steal iopb[0] for this, but we put it back when we are done. 1807 */ 1808 void 1809 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1810 { 1811 struct xd_iopb tmpiopb; 1812 u_long addr; 1813 int del; 1814 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1815 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1816 xdcsc->iopbase->comm = XDCMD_RST; 1817 xdcsc->iopbase->unit = xdsc->xd_drive; 1818 addr = (u_long) xdcsc->dvmaiopb; 1819 XDC_GO(xdcsc->xdc, addr); /* go! */ 1820 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1821 if (del <= 0 || xdcsc->iopbase->errs) { 1822 printf("%s: off-line: %s\n", device_xname(xdcsc->sc_dev), 1823 xdc_e2str(xdcsc->iopbase->errnum)); 1824 xdcsc->xdc->xdc_csr = XDC_RESET; 1825 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1826 if (del <= 0) 1827 panic("xdc_reset"); 1828 } else { 1829 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1830 } 1831 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1832 } 1833 1834 1835 /* 1836 * xdc_reset: reset everything: requests are marked as errors except 1837 * a polled request (which is resubmitted) 1838 */ 1839 int 1840 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1841 struct xd_softc *xdsc) 1842 1843 { 1844 int del = 0, lcv, retval = XD_ERR_AOK; 1845 int oldfree = xdcsc->nfree; 1846 1847 /* soft reset hardware */ 1848 1849 if (!quiet) 1850 printf("%s: soft reset\n", device_xname(xdcsc->sc_dev)); 1851 xdcsc->xdc->xdc_csr = XDC_RESET; 1852 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1853 if (del <= 0) { 1854 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1855 retval = XD_ERR_FAIL; 1856 } 1857 if (xdsc) 1858 xdc_xdreset(xdcsc, xdsc); 1859 1860 /* fix queues based on "blast-mode" */ 1861 1862 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1863 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1864 1865 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1866 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1867 XD_STATE(iorq->mode) != XD_SUB_NORM) 1868 /* is it active? */ 1869 continue; 1870 1871 xdcsc->nrun--; /* it isn't running any more */ 1872 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1873 /* failed */ 1874 iorq->errnum = error; 1875 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1876 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1877 case XD_SUB_NORM: 1878 iorq->buf->b_error = EIO; 1879 iorq->buf->b_resid = 1880 iorq->sectcnt * XDFM_BPS; 1881 1882 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1883 iorq->dmamap->dm_mapsize, 1884 (iorq->buf->b_flags & B_READ) 1885 ? BUS_DMASYNC_POSTREAD 1886 : BUS_DMASYNC_POSTWRITE); 1887 1888 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1889 1890 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1891 (xdcsc->reqs[lcv].buf->b_bcount - 1892 xdcsc->reqs[lcv].buf->b_resid), 1893 (iorq->buf->b_flags & B_READ)); 1894 biodone(iorq->buf); 1895 XDC_FREE(xdcsc, lcv); /* add to free list */ 1896 break; 1897 case XD_SUB_WAIT: 1898 wakeup(iorq); 1899 case XD_SUB_POLL: 1900 xdcsc->ndone++; 1901 iorq->mode = 1902 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1903 break; 1904 } 1905 1906 } else { 1907 1908 /* resubmit, put at front of wait queue */ 1909 XDC_HWAIT(xdcsc, lcv); 1910 } 1911 } 1912 1913 /* 1914 * now, if stuff is waiting, start it. 1915 * since we just reset it should go 1916 */ 1917 xdc_start(xdcsc, XDC_MAXIOPB); 1918 1919 /* ok, we did it */ 1920 if (oldfree == 0 && xdcsc->nfree) 1921 wakeup(&xdcsc->nfree); 1922 1923 #ifdef XDC_DIAG 1924 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1925 if (del != XDC_MAXIOPB) 1926 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1927 device_xname(xdcsc->sc_dev), del, XDC_MAXIOPB); 1928 else 1929 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1930 printf("%s: diag: lots of done jobs (%d)\n", 1931 device_xname(xdcsc->sc_dev), xdcsc->ndone); 1932 #endif 1933 printf("RESET DONE\n"); 1934 return (retval); 1935 } 1936 /* 1937 * xdc_start: start all waiting buffers 1938 */ 1939 1940 void 1941 xdc_start(struct xdc_softc *xdcsc, int maxio) 1942 1943 { 1944 int rqno; 1945 while (maxio && xdcsc->nwait && 1946 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1947 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1948 * param */ 1949 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1950 panic("xdc_start"); /* should never happen */ 1951 maxio--; 1952 } 1953 } 1954 /* 1955 * xdc_remove_iorq: remove "done" IOPB's. 1956 */ 1957 1958 int 1959 xdc_remove_iorq(struct xdc_softc *xdcsc) 1960 { 1961 int errnum, rqno, comm, errs; 1962 struct xdc *xdc = xdcsc->xdc; 1963 struct xd_iopb *iopb; 1964 struct xd_iorq *iorq; 1965 struct buf *bp; 1966 1967 if (xdc->xdc_csr & XDC_F_ERROR) { 1968 /* 1969 * FATAL ERROR: should never happen under normal use. This 1970 * error is so bad, you can't even tell which IOPB is bad, so 1971 * we dump them all. 1972 */ 1973 errnum = xdc->xdc_f_err; 1974 aprint_error_dev(xdcsc->sc_dev, "fatal error 0x%02x: %s\n", 1975 errnum, xdc_e2str(errnum)); 1976 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errnum, 0) != XD_ERR_AOK) { 1977 aprint_error_dev(xdcsc->sc_dev, "soft reset failed!\n"); 1978 panic("xdc_remove_iorq: controller DEAD"); 1979 } 1980 return (XD_ERR_AOK); 1981 } 1982 1983 /* 1984 * get iopb that is done 1985 * 1986 * hmm... I used to read the address of the done IOPB off the VME 1987 * registers and calculate the rqno directly from that. that worked 1988 * until I started putting a load on the controller. when loaded, i 1989 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1990 * be set, even after DELAY'ing a while! later on the timeout 1991 * routine would detect IOPBs that were marked "running" but their 1992 * "done" bit was set. rather than dealing directly with this 1993 * problem, it is just easier to look at all running IOPB's for the 1994 * done bit. 1995 */ 1996 if (xdc->xdc_csr & XDC_REMIOPB) { 1997 xdc->xdc_csr = XDC_CLRRIO; 1998 } 1999 2000 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2001 iorq = &xdcsc->reqs[rqno]; 2002 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2003 continue; /* free, or done */ 2004 iopb = &xdcsc->iopbase[rqno]; 2005 if (iopb->done == 0) 2006 continue; /* not done yet */ 2007 2008 #ifdef XDC_DEBUG 2009 { 2010 u_char *rio = (u_char *) iopb; 2011 int sz = sizeof(struct xd_iopb), lcv; 2012 printf("%s: rio #%d [", device_xname(xdcsc->sc_dev), rqno); 2013 for (lcv = 0; lcv < sz; lcv++) 2014 printf(" %02x", rio[lcv]); 2015 printf("]\n"); 2016 } 2017 #endif /* XDC_DEBUG */ 2018 2019 xdcsc->nrun--; 2020 2021 comm = iopb->comm; 2022 errs = iopb->errs; 2023 2024 if (errs) 2025 iorq->errnum = iopb->errnum; 2026 else 2027 iorq->errnum = 0; 2028 2029 /* handle non-fatal errors */ 2030 2031 if (errs && 2032 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2033 continue; /* AOK: we resubmitted it */ 2034 2035 2036 /* this iorq is now done (hasn't been restarted or anything) */ 2037 2038 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2039 xdc_perror(iorq, iopb, 0); 2040 2041 /* now, if read/write check to make sure we got all the data 2042 * we needed. (this may not be the case if we got an error in 2043 * the middle of a multisector request). */ 2044 2045 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2046 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2047 /* we just successfully processed a bad144 sector 2048 * note: if we are in bad 144 mode, the pointers have 2049 * been advanced already (see above) and are pointing 2050 * at the bad144 sector. to exit bad144 mode, we 2051 * must advance the pointers 1 sector and issue a new 2052 * request if there are still sectors left to process 2053 * 2054 */ 2055 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2056 2057 /* exit b144 mode */ 2058 iorq->mode = iorq->mode & (~XD_MODE_B144); 2059 2060 if (iorq->sectcnt) { /* more to go! */ 2061 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 2062 iopb->errs = iopb->done = 0; 2063 iorq->tries = 0; 2064 iopb->sectcnt = iorq->sectcnt; 2065 iopb->cylno = iorq->blockno / 2066 iorq->xd->sectpercyl; 2067 iopb->headno = 2068 (iorq->blockno / iorq->xd->nhead) % 2069 iorq->xd->nhead; 2070 iopb->sectno = iorq->blockno % XDFM_BPS; 2071 iopb->daddr = (u_long) iorq->dbuf; 2072 XDC_HWAIT(xdcsc, rqno); 2073 xdc_start(xdcsc, 1); /* resubmit */ 2074 continue; 2075 } 2076 } 2077 /* final cleanup, totally done with this request */ 2078 2079 switch (XD_STATE(iorq->mode)) { 2080 case XD_SUB_NORM: 2081 bp = iorq->buf; 2082 if (errs) { 2083 bp->b_error = EIO; 2084 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2085 } else { 2086 bp->b_resid = 0; /* done */ 2087 } 2088 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2089 iorq->dmamap->dm_mapsize, 2090 (bp->b_flags & B_READ) 2091 ? BUS_DMASYNC_POSTREAD 2092 : BUS_DMASYNC_POSTWRITE); 2093 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2094 2095 disk_unbusy(&iorq->xd->sc_dk, 2096 (bp->b_bcount - bp->b_resid), 2097 (bp->b_flags & B_READ)); 2098 XDC_FREE(xdcsc, rqno); 2099 biodone(bp); 2100 break; 2101 case XD_SUB_WAIT: 2102 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2103 xdcsc->ndone++; 2104 wakeup(iorq); 2105 break; 2106 case XD_SUB_POLL: 2107 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2108 xdcsc->ndone++; 2109 break; 2110 } 2111 } 2112 2113 return (XD_ERR_AOK); 2114 } 2115 2116 /* 2117 * xdc_perror: print error. 2118 * - if still_trying is true: we got an error, retried and got a 2119 * different error. in that case lasterror is the old error, 2120 * and errnum is the new one. 2121 * - if still_trying is not true, then if we ever had an error it 2122 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2123 * from that error (otherwise iorq->errnum == iorq->lasterror). 2124 */ 2125 void 2126 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 2127 2128 { 2129 2130 int error = iorq->lasterror; 2131 2132 printf("%s", (iorq->xd) ? device_xname(iorq->xd->sc_dev) 2133 : device_xname(iorq->xdc->sc_dev)); 2134 if (iorq->buf) 2135 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2136 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2137 printf("%s %d/%d/%d: ", 2138 (iopb->comm == XDCMD_RD) ? "read" : "write", 2139 iopb->cylno, iopb->headno, iopb->sectno); 2140 printf("%s", xdc_e2str(error)); 2141 2142 if (still_trying) 2143 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errnum)); 2144 else 2145 if (iorq->errnum == 0) 2146 printf(" [recovered in %d tries]", iorq->tries); 2147 2148 printf("\n"); 2149 } 2150 2151 /* 2152 * xdc_error: non-fatal error encountered... recover. 2153 * return AOK if resubmitted, return FAIL if this iopb is done 2154 */ 2155 int 2156 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 2157 int rqno, int comm) 2158 2159 { 2160 int errnum = iorq->errnum; 2161 int erract = errnum & XD_ERA_MASK; 2162 int oldmode, advance; 2163 #ifdef __sparc__ 2164 int i; 2165 #endif 2166 2167 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2168 oldmode = iorq->mode; 2169 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2170 xdcsc->ndone++; 2171 /* make xdc_start ignore us */ 2172 xdc_reset(xdcsc, 1, XD_RSET_NONE, errnum, iorq->xd); 2173 iorq->mode = oldmode; 2174 xdcsc->ndone--; 2175 } 2176 /* check for read/write to a sector in bad144 table if bad: redirect 2177 * request to bad144 area */ 2178 2179 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2180 (iorq->mode & XD_MODE_B144) == 0) { 2181 advance = iorq->sectcnt - iopb->sectcnt; 2182 XDC_ADVANCE(iorq, advance); 2183 #ifdef __sparc__ 2184 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2185 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2186 iorq->blockno % iorq->xd->nsect)) != -1) { 2187 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2188 * redirect */ 2189 iopb->errnum = iopb->done = iopb->errs = 0; 2190 iopb->sectcnt = 1; 2191 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2192 /* second to last acyl */ 2193 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2194 * standard */ 2195 iopb->headno = i / iorq->xd->nhead; 2196 iopb->sectno = i % iorq->xd->nhead; 2197 XDC_HWAIT(xdcsc, rqno); 2198 xdc_start(xdcsc, 1); /* resubmit */ 2199 return (XD_ERR_AOK); /* recovered! */ 2200 } 2201 #endif 2202 } 2203 2204 /* 2205 * it isn't a bad144 sector, must be real error! see if we can retry 2206 * it? 2207 */ 2208 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2209 xdc_perror(iorq, iopb, 1); /* inform of error state 2210 * change */ 2211 iorq->lasterror = errnum; 2212 2213 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2214 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2215 iorq->tries++; 2216 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2217 XDC_HWAIT(xdcsc, rqno); 2218 xdc_start(xdcsc, 1); /* restart */ 2219 return (XD_ERR_AOK); /* recovered! */ 2220 } 2221 2222 /* failed to recover from this error */ 2223 return (XD_ERR_FAIL); 2224 } 2225 2226 /* 2227 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2228 */ 2229 void 2230 xdc_tick(void *arg) 2231 2232 { 2233 struct xdc_softc *xdcsc = arg; 2234 int lcv, s, reset = 0; 2235 #ifdef XDC_DIAG 2236 int nwait, nrun, nfree, ndone, whd = 0; 2237 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2238 s = splbio(); 2239 nwait = xdcsc->nwait; 2240 nrun = xdcsc->nrun; 2241 nfree = xdcsc->nfree; 2242 ndone = xdcsc->ndone; 2243 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2244 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2245 splx(s); 2246 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2247 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2248 device_xname(xdcsc->sc_dev), nwait, nfree, nrun, ndone, 2249 XDC_MAXIOPB); 2250 memset(mark, 0, sizeof(mark)); 2251 printf("FREE: "); 2252 for (lcv = nfree; lcv > 0; lcv--) { 2253 printf("%d ", fqc[lcv - 1]); 2254 mark[fqc[lcv - 1]] = 1; 2255 } 2256 printf("\nWAIT: "); 2257 lcv = nwait; 2258 while (lcv > 0) { 2259 printf("%d ", wqc[whd]); 2260 mark[wqc[whd]] = 1; 2261 whd = (whd + 1) % XDC_MAXIOPB; 2262 lcv--; 2263 } 2264 printf("\n"); 2265 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2266 if (mark[lcv] == 0) 2267 printf("MARK: running %d: mode %d done %d errs %d errnum 0x%x ttl %d buf %p\n", 2268 lcv, xdcsc->reqs[lcv].mode, 2269 xdcsc->iopbase[lcv].done, 2270 xdcsc->iopbase[lcv].errs, 2271 xdcsc->iopbase[lcv].errnum, 2272 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2273 } 2274 } else 2275 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2276 printf("%s: diag: lots of done jobs (%d)\n", 2277 device_xname(xdcsc->sc_dev), ndone); 2278 2279 #endif 2280 #ifdef XDC_DEBUG 2281 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2282 device_xname(xdcsc->sc_dev), 2283 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2284 xdcsc->ndone); 2285 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2286 if (xdcsc->reqs[lcv].mode) 2287 printf("running %d: mode %d done %d errs %d errnum 0x%x\n", 2288 lcv, 2289 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2290 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errnum); 2291 } 2292 #endif 2293 2294 /* reduce ttl for each request if one goes to zero, reset xdc */ 2295 s = splbio(); 2296 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2297 if (xdcsc->reqs[lcv].mode == 0 || 2298 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2299 continue; 2300 xdcsc->reqs[lcv].ttl--; 2301 if (xdcsc->reqs[lcv].ttl == 0) 2302 reset = 1; 2303 } 2304 if (reset) { 2305 printf("%s: watchdog timeout\n", device_xname(xdcsc->sc_dev)); 2306 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2307 } 2308 splx(s); 2309 2310 /* until next time */ 2311 2312 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2313 } 2314 2315 /* 2316 * xdc_ioctlcmd: this function provides a user level interface to the 2317 * controller via ioctl. this allows "format" programs to be written 2318 * in user code, and is also useful for some debugging. we return 2319 * an error code. called at user priority. 2320 */ 2321 int 2322 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2323 2324 { 2325 int s, rqno, dummy; 2326 char *dvmabuf = NULL, *buf = NULL; 2327 struct xdc_softc *xdcsc; 2328 int rseg, error; 2329 bus_dma_segment_t seg; 2330 2331 /* check sanity of requested command */ 2332 2333 switch (xio->cmd) { 2334 2335 case XDCMD_NOP: /* no op: everything should be zero */ 2336 if (xio->subfn || xio->dptr || xio->dlen || 2337 xio->block || xio->sectcnt) 2338 return (EINVAL); 2339 break; 2340 2341 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2342 case XDCMD_WR: 2343 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2344 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2345 return (EINVAL); 2346 break; 2347 2348 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2349 return (EINVAL); 2350 2351 case XDCMD_WRP: /* write parameters */ 2352 return (EINVAL);/* not useful, except maybe drive 2353 * parameters... but drive parameters should 2354 * go via disklabel changes */ 2355 2356 case XDCMD_RDP: /* read parameters */ 2357 if (xio->subfn != XDFUN_DRV || 2358 xio->dlen || xio->block || xio->dptr) 2359 return (EINVAL); /* allow read drive params to 2360 * get hw_spt */ 2361 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2362 return (0); 2363 break; 2364 2365 case XDCMD_XRD: /* extended read/write */ 2366 case XDCMD_XWR: 2367 2368 switch (xio->subfn) { 2369 2370 case XDFUN_THD:/* track headers */ 2371 if (xio->sectcnt != xd->hw_spt || 2372 (xio->block % xd->nsect) != 0 || 2373 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2374 xio->dptr == NULL) 2375 return (EINVAL); 2376 xio->sectcnt = 0; 2377 break; 2378 2379 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2380 if (xio->cmd == XDCMD_XRD) 2381 return (EINVAL); /* no XDFUN_VFY */ 2382 if (xio->sectcnt || xio->dlen || 2383 (xio->block % xd->nsect) != 0 || xio->dptr) 2384 return (EINVAL); 2385 break; 2386 2387 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2388 return (EINVAL); /* not yet */ 2389 2390 case XDFUN_DM: /* defect map */ 2391 case XDFUN_DMX:/* defect map (alternate location) */ 2392 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2393 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2394 return (EINVAL); 2395 break; 2396 2397 default: 2398 return (EINVAL); 2399 } 2400 break; 2401 2402 case XDCMD_TST: /* diagnostics */ 2403 return (EINVAL); 2404 2405 default: 2406 return (EINVAL);/* ??? */ 2407 } 2408 2409 xdcsc = xd->parent; 2410 2411 /* create DVMA buffer for request if needed */ 2412 if (xio->dlen) { 2413 bus_addr_t busbuf; 2414 2415 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2416 &seg, &rseg, 2417 xio->dlen, (void **)&buf, 2418 &busbuf)) != 0) { 2419 return (error); 2420 } 2421 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2422 2423 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2424 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2425 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2426 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2427 return (error); 2428 } 2429 } 2430 } 2431 2432 /* do it! */ 2433 2434 error = 0; 2435 s = splbio(); 2436 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2437 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2438 if (rqno == XD_ERR_FAIL) { 2439 error = EIO; 2440 goto done; 2441 } 2442 xio->errnum = xdcsc->reqs[rqno].errnum; 2443 xio->tries = xdcsc->reqs[rqno].tries; 2444 XDC_DONE(xdcsc, rqno, dummy); 2445 __USE(dummy); 2446 2447 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2448 error = copyout(buf, xio->dptr, xio->dlen); 2449 2450 done: 2451 splx(s); 2452 if (dvmabuf) { 2453 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2454 xio->dlen, buf); 2455 } 2456 return (error); 2457 } 2458 2459 /* 2460 * xdc_e2str: convert error code number into an error string 2461 */ 2462 const char * 2463 xdc_e2str(int no) 2464 { 2465 switch (no) { 2466 case XD_ERR_FAIL: 2467 return ("Software fatal error"); 2468 case XD_ERR_AOK: 2469 return ("Successful completion"); 2470 case XD_ERR_ICYL: 2471 return ("Illegal cylinder address"); 2472 case XD_ERR_IHD: 2473 return ("Illegal head address"); 2474 case XD_ERR_ISEC: 2475 return ("Illgal sector address"); 2476 case XD_ERR_CZER: 2477 return ("Count zero"); 2478 case XD_ERR_UIMP: 2479 return ("Unimplemented command"); 2480 case XD_ERR_IF1: 2481 return ("Illegal field length 1"); 2482 case XD_ERR_IF2: 2483 return ("Illegal field length 2"); 2484 case XD_ERR_IF3: 2485 return ("Illegal field length 3"); 2486 case XD_ERR_IF4: 2487 return ("Illegal field length 4"); 2488 case XD_ERR_IF5: 2489 return ("Illegal field length 5"); 2490 case XD_ERR_IF6: 2491 return ("Illegal field length 6"); 2492 case XD_ERR_IF7: 2493 return ("Illegal field length 7"); 2494 case XD_ERR_ISG: 2495 return ("Illegal scatter/gather length"); 2496 case XD_ERR_ISPT: 2497 return ("Not enough sectors per track"); 2498 case XD_ERR_ALGN: 2499 return ("Next IOPB address alignment error"); 2500 case XD_ERR_SGAL: 2501 return ("Scatter/gather address alignment error"); 2502 case XD_ERR_SGEC: 2503 return ("Scatter/gather with auto-ECC"); 2504 case XD_ERR_SECC: 2505 return ("Soft ECC corrected"); 2506 case XD_ERR_SIGN: 2507 return ("ECC ignored"); 2508 case XD_ERR_ASEK: 2509 return ("Auto-seek retry recovered"); 2510 case XD_ERR_RTRY: 2511 return ("Soft retry recovered"); 2512 case XD_ERR_HECC: 2513 return ("Hard data ECC"); 2514 case XD_ERR_NHDR: 2515 return ("Header not found"); 2516 case XD_ERR_NRDY: 2517 return ("Drive not ready"); 2518 case XD_ERR_TOUT: 2519 return ("Operation timeout"); 2520 case XD_ERR_VTIM: 2521 return ("VMEDMA timeout"); 2522 case XD_ERR_DSEQ: 2523 return ("Disk sequencer error"); 2524 case XD_ERR_HDEC: 2525 return ("Header ECC error"); 2526 case XD_ERR_RVFY: 2527 return ("Read verify"); 2528 case XD_ERR_VFER: 2529 return ("Fatail VMEDMA error"); 2530 case XD_ERR_VBUS: 2531 return ("VMEbus error"); 2532 case XD_ERR_DFLT: 2533 return ("Drive faulted"); 2534 case XD_ERR_HECY: 2535 return ("Header error/cyliner"); 2536 case XD_ERR_HEHD: 2537 return ("Header error/head"); 2538 case XD_ERR_NOCY: 2539 return ("Drive not on-cylinder"); 2540 case XD_ERR_SEEK: 2541 return ("Seek error"); 2542 case XD_ERR_ILSS: 2543 return ("Illegal sector size"); 2544 case XD_ERR_SEC: 2545 return ("Soft ECC"); 2546 case XD_ERR_WPER: 2547 return ("Write-protect error"); 2548 case XD_ERR_IRAM: 2549 return ("IRAM self test failure"); 2550 case XD_ERR_MT3: 2551 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2552 case XD_ERR_MT4: 2553 return ("Maintenance test 4 failure (header shift reg)"); 2554 case XD_ERR_MT5: 2555 return ("Maintenance test 5 failure (VMEDMA regs)"); 2556 case XD_ERR_MT6: 2557 return ("Maintenance test 6 failure (REGCEL chip)"); 2558 case XD_ERR_MT7: 2559 return ("Maintenance test 7 failure (buffer parity)"); 2560 case XD_ERR_MT8: 2561 return ("Maintenance test 8 failure (disk FIFO)"); 2562 case XD_ERR_IOCK: 2563 return ("IOPB checksum miscompare"); 2564 case XD_ERR_IODM: 2565 return ("IOPB DMA fatal"); 2566 case XD_ERR_IOAL: 2567 return ("IOPB address alignment error"); 2568 case XD_ERR_FIRM: 2569 return ("Firmware error"); 2570 case XD_ERR_MMOD: 2571 return ("Illegal maintenance mode test number"); 2572 case XD_ERR_ACFL: 2573 return ("ACFAIL asserted"); 2574 default: 2575 return ("Unknown error"); 2576 } 2577 } 2578