1 /* $NetBSD: xd.c,v 1.90 2013/10/19 21:00:32 mrg 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 1.90 2013/10/19 21:00:32 mrg 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 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 296 }; 297 298 const struct cdevsw xd_cdevsw = { 299 xdopen, xdclose, xdread, xdwrite, xdioctl, 300 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 301 }; 302 303 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 304 int driveno; /* unit number */ 305 int fullmode; /* submit mode */ 306 int booting; /* are we booting or not? */ 307 }; 308 309 /* 310 * dkdriver 311 */ 312 313 struct dkdriver xddkdriver = {xdstrategy}; 314 315 /* 316 * start: disk label fix code (XXX) 317 */ 318 319 static void *xd_labeldata; 320 321 static void 322 xddummystrat(struct buf *bp) 323 { 324 if (bp->b_bcount != XDFM_BPS) 325 panic("xddummystrat"); 326 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 327 bp->b_oflags |= BO_DONE; 328 bp->b_cflags &= ~BC_BUSY; 329 } 330 331 int 332 xdgetdisklabel(struct xd_softc *xd, void *b) 333 { 334 const char *err; 335 #if defined(__sparc__) || defined(sun3) 336 struct sun_disklabel *sdl; 337 #endif 338 339 /* We already have the label data in `b'; setup for dummy strategy */ 340 xd_labeldata = b; 341 342 /* Required parameter for readdisklabel() */ 343 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 344 345 err = readdisklabel(MAKEDISKDEV(0, device_unit(xd->sc_dev), RAW_PART), 346 xddummystrat, 347 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 348 if (err) { 349 aprint_error_dev(xd->sc_dev, "%s\n", err); 350 return(XD_ERR_FAIL); 351 } 352 353 #if defined(__sparc__) || defined(sun3) 354 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 355 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 356 if (sdl->sl_magic == SUN_DKMAGIC) { 357 xd->pcyl = sdl->sl_pcylinders; 358 } else 359 #endif 360 { 361 printf("%s: WARNING: no `pcyl' in disk label.\n", 362 device_xname(xd->sc_dev)); 363 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 364 xd->sc_dk.dk_label->d_acylinders; 365 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 366 device_xname(xd->sc_dev), xd->pcyl); 367 } 368 369 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 370 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 371 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 372 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 373 xd->sectpercyl = xd->nhead * xd->nsect; 374 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 375 * sun->bsd */ 376 return(XD_ERR_AOK); 377 } 378 379 /* 380 * end: disk label fix code (XXX) 381 */ 382 383 /* 384 * Shorthand for allocating, mapping and loading a DMA buffer 385 */ 386 int 387 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) 388 { 389 int nseg; 390 int error; 391 392 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 393 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 394 return (error); 395 } 396 397 if ((error = bus_dmamem_map(tag, seg, nseg, 398 len, kvap, 399 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 400 bus_dmamem_free(tag, seg, nseg); 401 return (error); 402 } 403 404 if ((error = bus_dmamap_load(tag, map, 405 *kvap, len, NULL, 406 BUS_DMA_NOWAIT)) != 0) { 407 bus_dmamem_unmap(tag, *kvap, len); 408 bus_dmamem_free(tag, seg, nseg); 409 return (error); 410 } 411 412 *dmap = map->dm_segs[0].ds_addr; 413 *nsegp = nseg; 414 return (0); 415 } 416 417 void 418 xd_dmamem_free(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int nseg, bus_size_t len, void * kva) 419 { 420 421 bus_dmamap_unload(tag, map); 422 bus_dmamem_unmap(tag, kva, len); 423 bus_dmamem_free(tag, seg, nseg); 424 } 425 426 427 /* 428 * a u t o c o n f i g f u n c t i o n s 429 */ 430 431 /* 432 * xdcmatch: determine if xdc is present or not. we do a 433 * soft reset to detect the xdc. 434 */ 435 436 int 437 xdc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 438 { 439 struct xdc *xdc = (void *)handle; /* XXX */ 440 int del = 0; 441 442 xdc->xdc_csr = XDC_RESET; 443 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 444 return (del > 0 ? 0 : EIO); 445 } 446 447 int 448 xdcmatch(device_t parent, cfdata_t cf, void *aux) 449 { 450 struct vme_attach_args *va = aux; 451 vme_chipset_tag_t ct = va->va_vct; 452 vme_am_t mod; 453 int error; 454 455 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 456 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 457 return (0); 458 459 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 460 mod, VME_D32, xdc_probe, 0); 461 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 462 463 return (error == 0); 464 } 465 466 /* 467 * xdcattach: attach controller 468 */ 469 void 470 xdcattach(device_t parent, device_t self, void *aux) 471 { 472 struct vme_attach_args *va = aux; 473 vme_chipset_tag_t ct = va->va_vct; 474 bus_space_tag_t bt; 475 bus_space_handle_t bh; 476 vme_intr_handle_t ih; 477 vme_am_t mod; 478 struct xdc_softc *xdc = device_private(self); 479 struct xdc_attach_args xa; 480 int lcv, rqno, error; 481 struct xd_iopb_ctrl *ctl; 482 bus_dma_segment_t seg; 483 int rseg; 484 vme_mapresc_t resc; 485 bus_addr_t busaddr; 486 487 xdc->sc_dev = self; 488 xdc_md_setup(); 489 490 /* get addressing and intr level stuff from autoconfig and load it 491 * into our xdc_softc. */ 492 493 xdc->dmatag = va->va_bdt; 494 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 495 496 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 497 panic("xdc: vme alloc"); 498 499 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 500 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 501 panic("xdc: vme_map"); 502 503 xdc->xdc = (struct xdc *) bh; /* XXX */ 504 xdc->ipl = va->ilevel; 505 xdc->vector = va->ivector; 506 507 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 508 xdc->sc_drives[lcv] = NULL; 509 510 /* 511 * allocate and zero buffers 512 * 513 * note: we simplify the code by allocating the max number of iopbs and 514 * iorq's up front. thus, we avoid linked lists and the costs 515 * associated with them in exchange for wasting a little memory. 516 */ 517 518 /* Get DMA handle for misc. transfers */ 519 if ((error = vme_dmamap_create( 520 ct, /* VME chip tag */ 521 MAXPHYS, /* size */ 522 VME_AM_A24, /* address modifier */ 523 VME_D32, /* data size */ 524 0, /* swap */ 525 1, /* nsegments */ 526 MAXPHYS, /* maxsegsz */ 527 0, /* boundary */ 528 BUS_DMA_NOWAIT, 529 &xdc->auxmap)) != 0) { 530 531 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 532 error); 533 return; 534 } 535 536 537 /* Get DMA handle for mapping iorq descriptors */ 538 if ((error = vme_dmamap_create( 539 ct, /* VME chip tag */ 540 XDC_MAXIOPB * sizeof(struct xd_iopb), 541 VME_AM_A24, /* address modifier */ 542 VME_D32, /* data size */ 543 0, /* swap */ 544 1, /* nsegments */ 545 XDC_MAXIOPB * sizeof(struct xd_iopb), 546 0, /* boundary */ 547 BUS_DMA_NOWAIT, 548 &xdc->iopmap)) != 0) { 549 550 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 551 error); 552 return; 553 } 554 555 /* Get DMA buffer for iorq descriptors */ 556 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 557 XDC_MAXIOPB * sizeof(struct xd_iopb), 558 (void **)&xdc->iopbase, 559 &busaddr)) != 0) { 560 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 561 error); 562 return; 563 } 564 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 565 566 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 567 568 xdc->reqs = (struct xd_iorq *) 569 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 570 M_DEVBUF, M_NOWAIT|M_ZERO); 571 if (xdc->reqs == NULL) 572 panic("xdc malloc"); 573 574 /* init free list, iorq to iopb pointers, and non-zero fields in the 575 * iopb which never change. */ 576 577 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 578 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 579 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 580 xdc->freereq[lcv] = lcv; 581 xdc->iopbase[lcv].fixd = 1; /* always the same */ 582 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 583 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 584 585 if ((error = vme_dmamap_create( 586 ct, /* VME chip tag */ 587 MAXPHYS, /* size */ 588 VME_AM_A24, /* address modifier */ 589 VME_D32, /* data size */ 590 0, /* swap */ 591 1, /* nsegments */ 592 MAXPHYS, /* maxsegsz */ 593 0, /* boundary */ 594 BUS_DMA_NOWAIT, 595 &xdc->reqs[lcv].dmamap)) != 0) { 596 597 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 598 error); 599 return; 600 } 601 } 602 xdc->nfree = XDC_MAXIOPB; 603 xdc->nrun = 0; 604 xdc->waithead = xdc->waitend = xdc->nwait = 0; 605 xdc->ndone = 0; 606 607 /* init queue of waiting bufs */ 608 609 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 610 callout_init(&xdc->sc_tick_ch, 0); 611 612 /* 613 * section 7 of the manual tells us how to init the controller: 614 * - read controller parameters (6/0) 615 * - write controller parameters (5/0) 616 */ 617 618 /* read controller parameters and insure we have a 753/7053 */ 619 620 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 621 if (rqno == XD_ERR_FAIL) { 622 printf(": couldn't read controller params\n"); 623 return; /* shouldn't ever happen */ 624 } 625 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 626 if (ctl->ctype != XDCT_753) { 627 if (xdc->reqs[rqno].errnum) 628 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errnum)); 629 printf(": doesn't identify as a 753/7053\n"); 630 XDC_DONE(xdc, rqno, error); 631 return; 632 } 633 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 634 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 635 XDC_DONE(xdc, rqno, error); 636 637 /* now write controller parameters (xdc_cmd sets all params for us) */ 638 639 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 640 XDC_DONE(xdc, rqno, error); 641 if (error) { 642 aprint_error_dev(xdc->sc_dev, "controller config error: %s\n", 643 xdc_e2str(error)); 644 return; 645 } 646 647 /* link in interrupt with higher level software */ 648 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 649 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 650 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 651 device_xname(xdc->sc_dev), "intr"); 652 653 654 /* now we must look for disks using autoconfig */ 655 xa.fullmode = XD_SUB_POLL; 656 xa.booting = 1; 657 658 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 659 (void) config_found(self, (void *) &xa, NULL); 660 661 /* start the watchdog clock */ 662 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 663 664 } 665 666 /* 667 * xdmatch: probe for disk. 668 * 669 * note: we almost always say disk is present. this allows us to 670 * spin up and configure a disk after the system is booted (we can 671 * call xdattach!). 672 */ 673 int 674 xdmatch(device_t parent, cfdata_t cf, void *aux) 675 { 676 struct xdc_attach_args *xa = aux; 677 678 /* looking for autoconf wildcard or exact match */ 679 680 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 681 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 682 return 0; 683 684 return 1; 685 686 } 687 688 /* 689 * xdattach: attach a disk. this can be called from autoconf and also 690 * from xdopen/xdstrategy. 691 */ 692 void 693 xdattach(device_t parent, device_t self, void *aux) 694 { 695 struct xd_softc *xd = device_private(self); 696 struct xdc_softc *xdc = device_private(parent); 697 struct xdc_attach_args *xa = aux; 698 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 699 struct xd_iopb_drive *driopb; 700 struct dkbad *dkb; 701 int rseg, error; 702 bus_dma_segment_t seg; 703 bus_addr_t busaddr; 704 void * dmaddr; 705 char * buf; 706 707 xd->sc_dev = self; 708 709 /* 710 * Always re-initialize the disk structure. We want statistics 711 * to start with a clean slate. 712 */ 713 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 714 715 /* if booting, init the xd_softc */ 716 717 if (xa->booting) { 718 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 719 xd->flags = 0; 720 xd->parent = xdc; 721 } 722 xd->xd_drive = xa->driveno; 723 fmode = xa->fullmode; 724 xdc->sc_drives[xa->driveno] = xd; 725 726 /* if not booting, make sure we are the only process in the attach for 727 * this drive. if locked out, sleep on it. */ 728 729 if (!xa->booting) { 730 s = splbio(); 731 while (xd->state == XD_DRIVE_ATTACHING) { 732 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 733 splx(s); 734 return; 735 } 736 } 737 printf("%s at %s", 738 device_xname(xd->sc_dev), device_xname(xd->parent->sc_dev)); 739 } 740 741 /* we now have control */ 742 xd->state = XD_DRIVE_ATTACHING; 743 newstate = XD_DRIVE_UNKNOWN; 744 745 buf = NULL; 746 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 747 XDFM_BPS, 748 (void **)&buf, 749 &busaddr)) != 0) { 750 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 751 error); 752 return; 753 } 754 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 755 756 /* first try and reset the drive */ 757 758 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 759 XDC_DONE(xdc, rqno, error); 760 if (error == XD_ERR_NRDY) { 761 printf(" drive %d: off-line\n", xa->driveno); 762 goto done; 763 } 764 if (error) { 765 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 766 goto done; 767 } 768 printf(" drive %d: ready\n", xa->driveno); 769 770 /* now set format parameters */ 771 772 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 773 XDC_DONE(xdc, rqno, error); 774 if (error) { 775 aprint_error_dev(xd->sc_dev, "write format parameters failed: %s\n", 776 xdc_e2str(error)); 777 goto done; 778 } 779 780 /* get drive parameters */ 781 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 782 if (rqno != XD_ERR_FAIL) { 783 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 784 spt = driopb->sectpertrk; 785 } 786 XDC_DONE(xdc, rqno, error); 787 if (error) { 788 aprint_error_dev(xd->sc_dev, "read drive parameters failed: %s\n", 789 xdc_e2str(error)); 790 goto done; 791 } 792 793 /* 794 * now set drive parameters (to semi-bogus values) so we can read the 795 * disk label. 796 */ 797 xd->pcyl = xd->ncyl = 1; 798 xd->acyl = 0; 799 xd->nhead = 1; 800 xd->nsect = 1; 801 xd->sectpercyl = 1; 802 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 803 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 804 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 805 XDC_DONE(xdc, rqno, error); 806 if (error) { 807 aprint_error_dev(xd->sc_dev, "write drive parameters failed: %s\n", 808 xdc_e2str(error)); 809 goto done; 810 } 811 812 /* read disk label */ 813 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 814 XDC_DONE(xdc, rqno, error); 815 if (error) { 816 aprint_error_dev(xd->sc_dev, "reading disk label failed: %s\n", 817 xdc_e2str(error)); 818 goto done; 819 } 820 newstate = XD_DRIVE_NOLABEL; 821 822 xd->hw_spt = spt; 823 /* Attach the disk: must be before getdisklabel to malloc label */ 824 disk_init(&xd->sc_dk, device_xname(xd->sc_dev), &xddkdriver); 825 disk_attach(&xd->sc_dk); 826 827 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 828 goto done; 829 830 /* inform the user of what is up */ 831 printf("%s: <%s>, pcyl %d, hw_spt %d\n", device_xname(xd->sc_dev), 832 buf, xd->pcyl, spt); 833 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 834 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 835 device_xname(xd->sc_dev), mb, xd->ncyl, xd->nhead, xd->nsect, 836 XDFM_BPS); 837 838 /* now set the real drive parameters! */ 839 840 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 841 XDC_DONE(xdc, rqno, error); 842 if (error) { 843 aprint_error_dev(xd->sc_dev, "write real drive parameters failed: %s\n", 844 xdc_e2str(error)); 845 goto done; 846 } 847 newstate = XD_DRIVE_ONLINE; 848 849 /* 850 * read bad144 table. this table resides on the first sector of the 851 * last track of the disk (i.e. second cyl of "acyl" area). 852 */ 853 854 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 855 (xd->nhead - 1) * xd->nsect; /* last head */ 856 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 857 XDC_DONE(xdc, rqno, error); 858 if (error) { 859 aprint_error_dev(xd->sc_dev, "reading bad144 failed: %s\n", 860 xdc_e2str(error)); 861 goto done; 862 } 863 864 /* check dkbad for sanity */ 865 dkb = (struct dkbad *) buf; 866 for (lcv = 0; lcv < 126; lcv++) { 867 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 868 dkb->bt_bad[lcv].bt_cyl == 0) && 869 dkb->bt_bad[lcv].bt_trksec == 0xffff) 870 continue; /* blank */ 871 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 872 break; 873 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 874 break; 875 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 876 break; 877 } 878 if (lcv != 126) { 879 aprint_error_dev(xd->sc_dev, "warning: invalid bad144 sector!\n"); 880 } else { 881 memcpy(&xd->dkb, buf, XDFM_BPS); 882 } 883 884 done: 885 if (buf != NULL) { 886 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 887 &seg, rseg, XDFM_BPS, buf); 888 } 889 890 xd->state = newstate; 891 if (!xa->booting) { 892 wakeup(&xd->state); 893 splx(s); 894 } 895 } 896 897 /* 898 * end of autoconfig functions 899 */ 900 901 /* 902 * { b , c } d e v s w f u n c t i o n s 903 */ 904 905 /* 906 * xdclose: close device 907 */ 908 int 909 xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 910 { 911 struct xd_softc *xd = device_lookup_private(&xd_cd, DISKUNIT(dev)); 912 int part = DISKPART(dev); 913 914 /* clear mask bits */ 915 916 switch (fmt) { 917 case S_IFCHR: 918 xd->sc_dk.dk_copenmask &= ~(1 << part); 919 break; 920 case S_IFBLK: 921 xd->sc_dk.dk_bopenmask &= ~(1 << part); 922 break; 923 } 924 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 925 926 return 0; 927 } 928 929 /* 930 * xddump: crash dump system 931 */ 932 int 933 xddump(dev_t dev, daddr_t blkno, void *va, size_t size) 934 { 935 int unit, part; 936 struct xd_softc *xd; 937 938 unit = DISKUNIT(dev); 939 part = DISKPART(dev); 940 941 xd = device_lookup_private(&xd_cd, unit); 942 if (!xd) 943 return ENXIO; 944 945 printf("%s%c: crash dump not supported (yet)\n", device_xname(xd->sc_dev), 946 'a' + part); 947 948 return ENXIO; 949 950 /* outline: globals: "dumplo" == sector number of partition to start 951 * dump at (convert to physical sector with partition table) 952 * "dumpsize" == size of dump in clicks "physmem" == size of physical 953 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 954 * physmem) 955 * 956 * dump a copy of physical memory to the dump device starting at sector 957 * "dumplo" in the swap partition (make sure > 0). map in pages as 958 * we go. use polled I/O. 959 * 960 * XXX how to handle NON_CONTIG? */ 961 962 } 963 964 static enum kauth_device_req 965 xd_getkauthreq(u_char cmd) 966 { 967 enum kauth_device_req req; 968 969 switch (cmd) { 970 case XDCMD_WR: 971 case XDCMD_XWR: 972 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 973 break; 974 975 case XDCMD_RD: 976 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 977 break; 978 979 case XDCMD_RDP: 980 case XDCMD_XRD: 981 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 982 break; 983 984 case XDCMD_WRP: 985 case XDCMD_RST: 986 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 987 break; 988 989 case XDCMD_NOP: 990 case XDCMD_SK: 991 case XDCMD_TST: 992 default: 993 req = 0; 994 break; 995 } 996 997 return (req); 998 } 999 1000 /* 1001 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1002 */ 1003 int 1004 xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 1005 1006 { 1007 struct xd_softc *xd; 1008 struct xd_iocmd *xio; 1009 int error, s, unit; 1010 #ifdef __HAVE_OLD_DISKLABEL 1011 struct disklabel newlabel; 1012 #endif 1013 struct disklabel *lp; 1014 1015 unit = DISKUNIT(dev); 1016 1017 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1018 return (ENXIO); 1019 1020 /* switch on ioctl type */ 1021 1022 switch (command) { 1023 case DIOCSBAD: /* set bad144 info */ 1024 if ((flag & FWRITE) == 0) 1025 return EBADF; 1026 s = splbio(); 1027 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 1028 splx(s); 1029 return 0; 1030 1031 case DIOCGDINFO: /* get disk label */ 1032 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 1033 return 0; 1034 #ifdef __HAVE_OLD_DISKLABEL 1035 case ODIOCGDINFO: 1036 newlabel = *(xd->sc_dk.dk_label); 1037 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1038 return ENOTTY; 1039 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1040 return 0; 1041 #endif 1042 1043 case DIOCGPART: /* get partition info */ 1044 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1045 ((struct partinfo *) addr)->part = 1046 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1047 return 0; 1048 1049 case DIOCSDINFO: /* set disk label */ 1050 #ifdef __HAVE_OLD_DISKLABEL 1051 case ODIOCSDINFO: 1052 if (command == ODIOCSDINFO) { 1053 memset(&newlabel, 0, sizeof newlabel); 1054 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1055 lp = &newlabel; 1056 } else 1057 #endif 1058 lp = (struct disklabel *)addr; 1059 1060 if ((flag & FWRITE) == 0) 1061 return EBADF; 1062 error = setdisklabel(xd->sc_dk.dk_label, 1063 lp, /* xd->sc_dk.dk_openmask : */ 0, 1064 xd->sc_dk.dk_cpulabel); 1065 if (error == 0) { 1066 if (xd->state == XD_DRIVE_NOLABEL) 1067 xd->state = XD_DRIVE_ONLINE; 1068 } 1069 return error; 1070 1071 case DIOCWLABEL: /* change write status of disk label */ 1072 if ((flag & FWRITE) == 0) 1073 return EBADF; 1074 if (*(int *) addr) 1075 xd->flags |= XD_WLABEL; 1076 else 1077 xd->flags &= ~XD_WLABEL; 1078 return 0; 1079 1080 case DIOCWDINFO: /* write disk label */ 1081 #ifdef __HAVE_OLD_DISKLABEL 1082 case ODIOCWDINFO: 1083 if (command == ODIOCWDINFO) { 1084 memset(&newlabel, 0, sizeof newlabel); 1085 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1086 lp = &newlabel; 1087 } else 1088 #endif 1089 lp = (struct disklabel *)addr; 1090 1091 if ((flag & FWRITE) == 0) 1092 return EBADF; 1093 error = setdisklabel(xd->sc_dk.dk_label, 1094 lp, /* xd->sc_dk.dk_openmask : */ 0, 1095 xd->sc_dk.dk_cpulabel); 1096 if (error == 0) { 1097 if (xd->state == XD_DRIVE_NOLABEL) 1098 xd->state = XD_DRIVE_ONLINE; 1099 1100 /* Simulate opening partition 0 so write succeeds. */ 1101 xd->sc_dk.dk_openmask |= (1 << 0); 1102 error = writedisklabel(MAKEDISKDEV(major(dev), 1103 DISKUNIT(dev), RAW_PART), 1104 xdstrategy, xd->sc_dk.dk_label, 1105 xd->sc_dk.dk_cpulabel); 1106 xd->sc_dk.dk_openmask = 1107 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1108 } 1109 return error; 1110 1111 case DIOSXDCMD: { 1112 enum kauth_device_req req; 1113 1114 xio = (struct xd_iocmd *) addr; 1115 req = xd_getkauthreq(xio->cmd); 1116 if ((error = kauth_authorize_device_passthru(l->l_cred, 1117 dev, req, xio)) != 0) 1118 return (error); 1119 return (xdc_ioctlcmd(xd, dev, xio)); 1120 } 1121 1122 default: 1123 return ENOTTY; 1124 } 1125 } 1126 /* 1127 * xdopen: open drive 1128 */ 1129 1130 int 1131 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1132 { 1133 int unit, part; 1134 struct xd_softc *xd; 1135 struct xdc_attach_args xa; 1136 1137 /* first, could it be a valid target? */ 1138 1139 unit = DISKUNIT(dev); 1140 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1141 return (ENXIO); 1142 part = DISKPART(dev); 1143 1144 /* do we need to attach the drive? */ 1145 1146 if (xd->state == XD_DRIVE_UNKNOWN) { 1147 xa.driveno = xd->xd_drive; 1148 xa.fullmode = XD_SUB_WAIT; 1149 xa.booting = 0; 1150 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1151 if (xd->state == XD_DRIVE_UNKNOWN) { 1152 return (EIO); 1153 } 1154 } 1155 /* check for partition */ 1156 1157 if (part != RAW_PART && 1158 (part >= xd->sc_dk.dk_label->d_npartitions || 1159 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1160 return (ENXIO); 1161 } 1162 /* set open masks */ 1163 1164 switch (fmt) { 1165 case S_IFCHR: 1166 xd->sc_dk.dk_copenmask |= (1 << part); 1167 break; 1168 case S_IFBLK: 1169 xd->sc_dk.dk_bopenmask |= (1 << part); 1170 break; 1171 } 1172 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1173 1174 return 0; 1175 } 1176 1177 int 1178 xdread(dev_t dev, struct uio *uio, int flags) 1179 { 1180 1181 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1182 } 1183 1184 int 1185 xdwrite(dev_t dev, struct uio *uio, int flags) 1186 { 1187 1188 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1189 } 1190 1191 1192 /* 1193 * xdsize: return size of a partition for a dump 1194 */ 1195 1196 int 1197 xdsize(dev_t dev) 1198 { 1199 struct xd_softc *xdsc; 1200 int unit, part, size, omask; 1201 1202 /* valid unit? */ 1203 unit = DISKUNIT(dev); 1204 if ((xdsc = device_lookup_private(&xd_cd, unit)) == NULL) 1205 return (-1); 1206 1207 part = DISKPART(dev); 1208 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1209 1210 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1211 return (-1); 1212 1213 /* do it */ 1214 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1215 size = -1; /* only give valid size for swap partitions */ 1216 else 1217 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1218 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1219 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1220 return (-1); 1221 return (size); 1222 } 1223 /* 1224 * xdstrategy: buffering system interface to xd. 1225 */ 1226 1227 void 1228 xdstrategy(struct buf *bp) 1229 { 1230 struct xd_softc *xd; 1231 struct xdc_softc *parent; 1232 int s, unit; 1233 struct xdc_attach_args xa; 1234 1235 unit = DISKUNIT(bp->b_dev); 1236 1237 /* check for live device */ 1238 1239 if (!(xd = device_lookup_private(&xd_cd, unit)) || 1240 bp->b_blkno < 0 || 1241 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1242 bp->b_error = EINVAL; 1243 goto done; 1244 } 1245 /* do we need to attach the drive? */ 1246 1247 if (xd->state == XD_DRIVE_UNKNOWN) { 1248 xa.driveno = xd->xd_drive; 1249 xa.fullmode = XD_SUB_WAIT; 1250 xa.booting = 0; 1251 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1252 if (xd->state == XD_DRIVE_UNKNOWN) { 1253 bp->b_error = EIO; 1254 goto done; 1255 } 1256 } 1257 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1258 /* no I/O to unlabeled disks, unless raw partition */ 1259 bp->b_error = EIO; 1260 goto done; 1261 } 1262 /* short circuit zero length request */ 1263 1264 if (bp->b_bcount == 0) 1265 goto done; 1266 1267 /* check bounds with label (disksubr.c). Determine the size of the 1268 * transfer, and make sure it is within the boundaries of the 1269 * partition. Adjust transfer if needed, and signal errors or early 1270 * completion. */ 1271 1272 if (bounds_check_with_label(&xd->sc_dk, bp, 1273 (xd->flags & XD_WLABEL) != 0) <= 0) 1274 goto done; 1275 1276 /* 1277 * now we know we have a valid buf structure that we need to do I/O 1278 * on. 1279 * 1280 * note that we don't disksort because the controller has a sorting 1281 * algorithm built into the hardware. 1282 */ 1283 1284 s = splbio(); /* protect the queues */ 1285 1286 /* first, give jobs in front of us a chance */ 1287 parent = xd->parent; 1288 while (parent->nfree > 0 && bufq_peek(parent->sc_wq) != NULL) 1289 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1290 break; 1291 1292 /* if there are no free iorq's, then we just queue and return. the 1293 * buffs will get picked up later by xdcintr(). 1294 */ 1295 1296 if (parent->nfree == 0) { 1297 bufq_put(parent->sc_wq, bp); 1298 splx(s); 1299 return; 1300 } 1301 1302 /* now we have free iopb's and we are at splbio... start 'em up */ 1303 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1304 return; 1305 } 1306 1307 /* done! */ 1308 1309 splx(s); 1310 return; 1311 1312 done: /* tells upper layers we are done with this 1313 * buf */ 1314 bp->b_resid = bp->b_bcount; 1315 biodone(bp); 1316 } 1317 /* 1318 * end of {b,c}devsw functions 1319 */ 1320 1321 /* 1322 * i n t e r r u p t f u n c t i o n 1323 * 1324 * xdcintr: hardware interrupt. 1325 */ 1326 int 1327 xdcintr(void *v) 1328 { 1329 struct xdc_softc *xdcsc = v; 1330 1331 /* kick the event counter */ 1332 1333 xdcsc->sc_intrcnt.ev_count++; 1334 1335 /* remove as many done IOPBs as possible */ 1336 1337 xdc_remove_iorq(xdcsc); 1338 1339 /* start any iorq's already waiting */ 1340 1341 xdc_start(xdcsc, XDC_MAXIOPB); 1342 1343 /* fill up any remaining iorq's with queue'd buffers */ 1344 1345 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1346 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1347 break; 1348 1349 return (1); 1350 } 1351 /* 1352 * end of interrupt function 1353 */ 1354 1355 /* 1356 * i n t e r n a l f u n c t i o n s 1357 */ 1358 1359 /* 1360 * xdc_rqinit: fill out the fields of an I/O request 1361 */ 1362 1363 inline void 1364 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) 1365 { 1366 rq->xdc = xdc; 1367 rq->xd = xd; 1368 rq->ttl = XDC_MAXTTL + 10; 1369 rq->mode = md; 1370 rq->tries = rq->errnum = rq->lasterror = 0; 1371 rq->blockno = blk; 1372 rq->sectcnt = cnt; 1373 rq->dbuf = db; 1374 rq->buf = bp; 1375 } 1376 /* 1377 * xdc_rqtopb: load up an IOPB based on an iorq 1378 */ 1379 1380 void 1381 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1382 { 1383 u_long block, dp; 1384 1385 /* standard stuff */ 1386 1387 iopb->errs = iopb->done = 0; 1388 iopb->comm = cmd; 1389 iopb->errnum = iopb->status = 0; 1390 iopb->subfun = subfun; 1391 if (iorq->xd) 1392 iopb->unit = iorq->xd->xd_drive; 1393 else 1394 iopb->unit = 0; 1395 1396 /* check for alternate IOPB format */ 1397 1398 if (cmd == XDCMD_WRP) { 1399 switch (subfun) { 1400 case XDFUN_CTL:{ 1401 struct xd_iopb_ctrl *ctrl = 1402 (struct xd_iopb_ctrl *) iopb; 1403 iopb->lll = 0; 1404 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1405 ? 0 1406 : iorq->xdc->ipl; 1407 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1408 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1409 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1410 XDPC_RBC | XDPC_ECC2; 1411 ctrl->throttle = XDC_THROTTLE; 1412 ctrl->delay = XDC_DELAY; 1413 break; 1414 } 1415 case XDFUN_DRV:{ 1416 struct xd_iopb_drive *drv = 1417 (struct xd_iopb_drive *)iopb; 1418 /* we assume that the disk label has the right 1419 * info */ 1420 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1421 drv->dparam_ipl = (XDC_DPARAM << 3); 1422 else 1423 drv->dparam_ipl = (XDC_DPARAM << 3) | 1424 iorq->xdc->ipl; 1425 drv->maxsect = iorq->xd->nsect - 1; 1426 drv->maxsector = drv->maxsect; 1427 /* note: maxsector != maxsect only if you are 1428 * doing cyl sparing */ 1429 drv->headoff = 0; 1430 drv->maxcyl = iorq->xd->pcyl - 1; 1431 drv->maxhead = iorq->xd->nhead - 1; 1432 break; 1433 } 1434 case XDFUN_FMT:{ 1435 struct xd_iopb_format *form = 1436 (struct xd_iopb_format *) iopb; 1437 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1438 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1439 else 1440 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1441 iorq->xdc->ipl; 1442 form->field1 = XDFM_FIELD1; 1443 form->field2 = XDFM_FIELD2; 1444 form->field3 = XDFM_FIELD3; 1445 form->field4 = XDFM_FIELD4; 1446 form->bytespersec = XDFM_BPS; 1447 form->field6 = XDFM_FIELD6; 1448 form->field7 = XDFM_FIELD7; 1449 break; 1450 } 1451 } 1452 } else { 1453 1454 /* normal IOPB case (harmless to RDP command) */ 1455 1456 iopb->lll = 0; 1457 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1458 ? 0 1459 : iorq->xdc->ipl; 1460 iopb->sectcnt = iorq->sectcnt; 1461 block = iorq->blockno; 1462 if (iorq->xd == NULL || block == 0) { 1463 iopb->sectno = iopb->headno = iopb->cylno = 0; 1464 } else { 1465 iopb->sectno = block % iorq->xd->nsect; 1466 block = block / iorq->xd->nsect; 1467 iopb->headno = block % iorq->xd->nhead; 1468 block = block / iorq->xd->nhead; 1469 iopb->cylno = block; 1470 } 1471 dp = (u_long) iorq->dbuf; 1472 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1473 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1474 ? XDC_ADDRMOD32 1475 : XDC_ADDRMOD; 1476 } 1477 } 1478 1479 /* 1480 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1481 * If you've already got an IORQ, you can call submit directly (currently 1482 * there is no need to do this). NORM requests are handled separately. 1483 */ 1484 int 1485 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1486 int scnt, char *dptr, int fullmode) 1487 { 1488 int rqno, submode = XD_STATE(fullmode), retry; 1489 struct xd_iorq *iorq; 1490 struct xd_iopb *iopb; 1491 1492 /* get iorq/iopb */ 1493 switch (submode) { 1494 case XD_SUB_POLL: 1495 while (xdcsc->nfree == 0) { 1496 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1497 return (XD_ERR_FAIL); 1498 } 1499 break; 1500 case XD_SUB_WAIT: 1501 retry = 1; 1502 while (retry) { 1503 while (xdcsc->nfree == 0) { 1504 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1505 return (XD_ERR_FAIL); 1506 } 1507 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1508 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1509 return (XD_ERR_FAIL); 1510 } 1511 if (xdcsc->nfree) 1512 retry = 0; /* got it */ 1513 } 1514 break; 1515 default: 1516 return (XD_ERR_FAIL); /* illegal */ 1517 } 1518 if (xdcsc->nfree == 0) 1519 panic("xdcmd nfree"); 1520 rqno = XDC_RQALLOC(xdcsc); 1521 iorq = &xdcsc->reqs[rqno]; 1522 iopb = iorq->iopb; 1523 1524 1525 /* init iorq/iopb */ 1526 1527 xdc_rqinit(iorq, xdcsc, 1528 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1529 fullmode, block, scnt, dptr, NULL); 1530 1531 /* load IOPB from iorq */ 1532 1533 xdc_rqtopb(iorq, iopb, cmd, subfn); 1534 1535 /* submit it for processing */ 1536 1537 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1538 1539 return (rqno); 1540 } 1541 /* 1542 * xdc_startbuf 1543 * start a buffer running, assumes nfree > 0 1544 */ 1545 1546 int 1547 xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1548 { 1549 int rqno, partno; 1550 struct xd_iorq *iorq; 1551 struct xd_iopb *iopb; 1552 u_long block; 1553 /* void *dbuf;*/ 1554 int error; 1555 1556 if (!xdcsc->nfree) 1557 panic("xdc_startbuf free"); 1558 rqno = XDC_RQALLOC(xdcsc); 1559 iorq = &xdcsc->reqs[rqno]; 1560 iopb = iorq->iopb; 1561 1562 /* get buf */ 1563 1564 if (bp == NULL) { 1565 bp = bufq_get(xdcsc->sc_wq); 1566 if (bp == NULL) 1567 panic("xdc_startbuf bp"); 1568 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1569 } 1570 partno = DISKPART(bp->b_dev); 1571 #ifdef XDC_DEBUG 1572 printf("xdc_startbuf: %s%c: %s block %d\n", device_xname(xdsc->sc_dev), 1573 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1574 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1575 bp->b_bcount, bp->b_data); 1576 #endif 1577 1578 /* 1579 * load request. we have to calculate the correct block number based 1580 * on partition info. 1581 * 1582 * note that iorq points to the buffer as mapped into DVMA space, 1583 * where as the bp->b_data points to its non-DVMA mapping. 1584 */ 1585 1586 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1587 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1588 1589 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1590 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1591 if (error != 0) { 1592 aprint_error_dev(xdcsc->sc_dev, "warning: cannot load DMA map\n"); 1593 XDC_FREE(xdcsc, rqno); 1594 bufq_put(xdcsc->sc_wq, bp); 1595 return (XD_ERR_FAIL); /* XXX: need some sort of 1596 * call-back scheme here? */ 1597 } 1598 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1599 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1600 ? BUS_DMASYNC_PREREAD 1601 : BUS_DMASYNC_PREWRITE); 1602 1603 /* init iorq and load iopb from it */ 1604 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1605 bp->b_bcount / XDFM_BPS, 1606 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1607 bp); 1608 1609 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1610 1611 /* Instrumentation. */ 1612 disk_busy(&xdsc->sc_dk); 1613 1614 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1615 1616 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1617 return (XD_ERR_AOK); 1618 } 1619 1620 1621 /* 1622 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1623 * if ok. if it fail returns an error code. type is XD_SUB_*. 1624 * 1625 * note: caller frees iorq in all cases except NORM 1626 * 1627 * return value: 1628 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1629 * WAIT: XD_AOK (success), <error-code> (failed) 1630 * POLL: <same as WAIT> 1631 * NOQ : <same as NORM> 1632 * 1633 * there are three sources for i/o requests: 1634 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1635 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1636 * [3] open/ioctl: these are I/O requests done in the context of a process, 1637 * and the process should block until they are done. 1638 * 1639 * software state is stored in the iorq structure. each iorq has an 1640 * iopb structure. the hardware understands the iopb structure. 1641 * every command must go through an iopb. a 7053 can only handle 1642 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1643 * DVMA space at boot up time. what happens if we run out of iopb's? 1644 * for i/o type [1], the buffers are queued at the "buff" layer and 1645 * picked up later by the interrupt routine. for case [2] the 1646 * programmed i/o driver is called with a special flag that says 1647 * return when one iopb is free. for case [3] the process can sleep 1648 * on the iorq free list until some iopbs are available. 1649 */ 1650 1651 1652 int 1653 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1654 { 1655 u_long iopbaddr; 1656 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1657 1658 #ifdef XDC_DEBUG 1659 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", device_xname(xdcsc->sc_dev), 1660 iorqno, type); 1661 #endif 1662 1663 /* first check and see if controller is busy */ 1664 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1665 #ifdef XDC_DEBUG 1666 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1667 #endif 1668 if (type == XD_SUB_NOQ) 1669 return (XD_ERR_FAIL); /* failed */ 1670 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1671 switch (type) { 1672 case XD_SUB_NORM: 1673 return XD_ERR_AOK; /* success */ 1674 case XD_SUB_WAIT: 1675 while (iorq->iopb->done == 0) { 1676 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1677 } 1678 return (iorq->errnum); 1679 case XD_SUB_POLL: 1680 return (xdc_piodriver(xdcsc, iorqno, 0)); 1681 default: 1682 panic("xdc_submit_iorq adding"); 1683 } 1684 } 1685 #ifdef XDC_DEBUG 1686 { 1687 u_char *rio = (u_char *) iorq->iopb; 1688 int sz = sizeof(struct xd_iopb), lcv; 1689 printf("%s: aio #%d [", 1690 device_xname(xdcsc->sc_dev), iorq - xdcsc->reqs); 1691 for (lcv = 0; lcv < sz; lcv++) 1692 printf(" %02x", rio[lcv]); 1693 printf("]\n"); 1694 } 1695 #endif /* XDC_DEBUG */ 1696 1697 /* controller not busy, start command */ 1698 iopbaddr = (u_long) iorq->dmaiopb; 1699 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1700 xdcsc->nrun++; 1701 /* command now running, wrap it up */ 1702 switch (type) { 1703 case XD_SUB_NORM: 1704 case XD_SUB_NOQ: 1705 return (XD_ERR_AOK); /* success */ 1706 case XD_SUB_WAIT: 1707 while (iorq->iopb->done == 0) { 1708 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1709 } 1710 return (iorq->errnum); 1711 case XD_SUB_POLL: 1712 return (xdc_piodriver(xdcsc, iorqno, 0)); 1713 default: 1714 panic("xdc_submit_iorq wrap up"); 1715 } 1716 panic("xdc_submit_iorq"); 1717 return 0; /* not reached */ 1718 } 1719 1720 1721 /* 1722 * xdc_piodriver 1723 * 1724 * programmed i/o driver. this function takes over the computer 1725 * and drains off all i/o requests. it returns the status of the iorq 1726 * the caller is interesting in. if freeone is true, then it returns 1727 * when there is a free iorq. 1728 */ 1729 int 1730 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1731 { 1732 int nreset = 0; 1733 int retval = 0; 1734 u_long count; 1735 struct xdc *xdc = xdcsc->xdc; 1736 #ifdef XDC_DEBUG 1737 printf("xdc_piodriver(%s, %d, freeone=%d)\n", device_xname(xdcsc->sc_dev), 1738 iorqno, freeone); 1739 #endif 1740 1741 while (xdcsc->nwait || xdcsc->nrun) { 1742 #ifdef XDC_DEBUG 1743 printf("xdc_piodriver: wait=%d, run=%d\n", 1744 xdcsc->nwait, xdcsc->nrun); 1745 #endif 1746 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1747 #ifdef XDC_DEBUG 1748 printf("xdc_piodriver: done wait with count = %d\n", count); 1749 #endif 1750 /* we expect some progress soon */ 1751 if (count == 0 && nreset >= 2) { 1752 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1753 #ifdef XDC_DEBUG 1754 printf("xdc_piodriver: timeout\n"); 1755 #endif 1756 return (XD_ERR_FAIL); 1757 } 1758 if (count == 0) { 1759 if (xdc_reset(xdcsc, 0, 1760 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1761 XD_ERR_FAIL, 1762 0) == XD_ERR_FAIL) 1763 return (XD_ERR_FAIL); /* flushes all but POLL 1764 * requests, resets */ 1765 continue; 1766 } 1767 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1768 if (freeone) { 1769 if (xdcsc->nrun < XDC_MAXIOPB) { 1770 #ifdef XDC_DEBUG 1771 printf("xdc_piodriver: done: one free\n"); 1772 #endif 1773 return (XD_ERR_AOK); 1774 } 1775 continue; /* don't xdc_start */ 1776 } 1777 xdc_start(xdcsc, XDC_MAXIOPB); 1778 } 1779 1780 /* get return value */ 1781 1782 retval = xdcsc->reqs[iorqno].errnum; 1783 1784 #ifdef XDC_DEBUG 1785 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1786 xdcsc->reqs[iorqno].errnum, xdc_e2str(xdcsc->reqs[iorqno].errnum)); 1787 #endif 1788 1789 /* now that we've drained everything, start up any bufs that have 1790 * queued */ 1791 1792 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1793 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1794 break; 1795 1796 return (retval); 1797 } 1798 1799 /* 1800 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1801 * we steal iopb[0] for this, but we put it back when we are done. 1802 */ 1803 void 1804 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1805 { 1806 struct xd_iopb tmpiopb; 1807 u_long addr; 1808 int del; 1809 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1810 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1811 xdcsc->iopbase->comm = XDCMD_RST; 1812 xdcsc->iopbase->unit = xdsc->xd_drive; 1813 addr = (u_long) xdcsc->dvmaiopb; 1814 XDC_GO(xdcsc->xdc, addr); /* go! */ 1815 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1816 if (del <= 0 || xdcsc->iopbase->errs) { 1817 printf("%s: off-line: %s\n", device_xname(xdcsc->sc_dev), 1818 xdc_e2str(xdcsc->iopbase->errnum)); 1819 xdcsc->xdc->xdc_csr = XDC_RESET; 1820 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1821 if (del <= 0) 1822 panic("xdc_reset"); 1823 } else { 1824 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1825 } 1826 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1827 } 1828 1829 1830 /* 1831 * xdc_reset: reset everything: requests are marked as errors except 1832 * a polled request (which is resubmitted) 1833 */ 1834 int 1835 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1836 struct xd_softc *xdsc) 1837 1838 { 1839 int del = 0, lcv, retval = XD_ERR_AOK; 1840 int oldfree = xdcsc->nfree; 1841 1842 /* soft reset hardware */ 1843 1844 if (!quiet) 1845 printf("%s: soft reset\n", device_xname(xdcsc->sc_dev)); 1846 xdcsc->xdc->xdc_csr = XDC_RESET; 1847 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1848 if (del <= 0) { 1849 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1850 retval = XD_ERR_FAIL; 1851 } 1852 if (xdsc) 1853 xdc_xdreset(xdcsc, xdsc); 1854 1855 /* fix queues based on "blast-mode" */ 1856 1857 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1858 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1859 1860 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1861 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1862 XD_STATE(iorq->mode) != XD_SUB_NORM) 1863 /* is it active? */ 1864 continue; 1865 1866 xdcsc->nrun--; /* it isn't running any more */ 1867 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1868 /* failed */ 1869 iorq->errnum = error; 1870 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1871 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1872 case XD_SUB_NORM: 1873 iorq->buf->b_error = EIO; 1874 iorq->buf->b_resid = 1875 iorq->sectcnt * XDFM_BPS; 1876 1877 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1878 iorq->dmamap->dm_mapsize, 1879 (iorq->buf->b_flags & B_READ) 1880 ? BUS_DMASYNC_POSTREAD 1881 : BUS_DMASYNC_POSTWRITE); 1882 1883 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1884 1885 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1886 (xdcsc->reqs[lcv].buf->b_bcount - 1887 xdcsc->reqs[lcv].buf->b_resid), 1888 (iorq->buf->b_flags & B_READ)); 1889 biodone(iorq->buf); 1890 XDC_FREE(xdcsc, lcv); /* add to free list */ 1891 break; 1892 case XD_SUB_WAIT: 1893 wakeup(iorq); 1894 case XD_SUB_POLL: 1895 xdcsc->ndone++; 1896 iorq->mode = 1897 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1898 break; 1899 } 1900 1901 } else { 1902 1903 /* resubmit, put at front of wait queue */ 1904 XDC_HWAIT(xdcsc, lcv); 1905 } 1906 } 1907 1908 /* 1909 * now, if stuff is waiting, start it. 1910 * since we just reset it should go 1911 */ 1912 xdc_start(xdcsc, XDC_MAXIOPB); 1913 1914 /* ok, we did it */ 1915 if (oldfree == 0 && xdcsc->nfree) 1916 wakeup(&xdcsc->nfree); 1917 1918 #ifdef XDC_DIAG 1919 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1920 if (del != XDC_MAXIOPB) 1921 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1922 device_xname(xdcsc->sc_dev), del, XDC_MAXIOPB); 1923 else 1924 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1925 printf("%s: diag: lots of done jobs (%d)\n", 1926 device_xname(xdcsc->sc_dev), xdcsc->ndone); 1927 #endif 1928 printf("RESET DONE\n"); 1929 return (retval); 1930 } 1931 /* 1932 * xdc_start: start all waiting buffers 1933 */ 1934 1935 void 1936 xdc_start(struct xdc_softc *xdcsc, int maxio) 1937 1938 { 1939 int rqno; 1940 while (maxio && xdcsc->nwait && 1941 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1942 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1943 * param */ 1944 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1945 panic("xdc_start"); /* should never happen */ 1946 maxio--; 1947 } 1948 } 1949 /* 1950 * xdc_remove_iorq: remove "done" IOPB's. 1951 */ 1952 1953 int 1954 xdc_remove_iorq(struct xdc_softc *xdcsc) 1955 { 1956 int errnum, rqno, comm, errs; 1957 struct xdc *xdc = xdcsc->xdc; 1958 struct xd_iopb *iopb; 1959 struct xd_iorq *iorq; 1960 struct buf *bp; 1961 1962 if (xdc->xdc_csr & XDC_F_ERROR) { 1963 /* 1964 * FATAL ERROR: should never happen under normal use. This 1965 * error is so bad, you can't even tell which IOPB is bad, so 1966 * we dump them all. 1967 */ 1968 errnum = xdc->xdc_f_err; 1969 aprint_error_dev(xdcsc->sc_dev, "fatal error 0x%02x: %s\n", 1970 errnum, xdc_e2str(errnum)); 1971 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errnum, 0) != XD_ERR_AOK) { 1972 aprint_error_dev(xdcsc->sc_dev, "soft reset failed!\n"); 1973 panic("xdc_remove_iorq: controller DEAD"); 1974 } 1975 return (XD_ERR_AOK); 1976 } 1977 1978 /* 1979 * get iopb that is done 1980 * 1981 * hmm... I used to read the address of the done IOPB off the VME 1982 * registers and calculate the rqno directly from that. that worked 1983 * until I started putting a load on the controller. when loaded, i 1984 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1985 * be set, even after DELAY'ing a while! later on the timeout 1986 * routine would detect IOPBs that were marked "running" but their 1987 * "done" bit was set. rather than dealing directly with this 1988 * problem, it is just easier to look at all running IOPB's for the 1989 * done bit. 1990 */ 1991 if (xdc->xdc_csr & XDC_REMIOPB) { 1992 xdc->xdc_csr = XDC_CLRRIO; 1993 } 1994 1995 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1996 iorq = &xdcsc->reqs[rqno]; 1997 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1998 continue; /* free, or done */ 1999 iopb = &xdcsc->iopbase[rqno]; 2000 if (iopb->done == 0) 2001 continue; /* not done yet */ 2002 2003 #ifdef XDC_DEBUG 2004 { 2005 u_char *rio = (u_char *) iopb; 2006 int sz = sizeof(struct xd_iopb), lcv; 2007 printf("%s: rio #%d [", device_xname(xdcsc->sc_dev), rqno); 2008 for (lcv = 0; lcv < sz; lcv++) 2009 printf(" %02x", rio[lcv]); 2010 printf("]\n"); 2011 } 2012 #endif /* XDC_DEBUG */ 2013 2014 xdcsc->nrun--; 2015 2016 comm = iopb->comm; 2017 errs = iopb->errs; 2018 2019 if (errs) 2020 iorq->errnum = iopb->errnum; 2021 else 2022 iorq->errnum = 0; 2023 2024 /* handle non-fatal errors */ 2025 2026 if (errs && 2027 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2028 continue; /* AOK: we resubmitted it */ 2029 2030 2031 /* this iorq is now done (hasn't been restarted or anything) */ 2032 2033 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2034 xdc_perror(iorq, iopb, 0); 2035 2036 /* now, if read/write check to make sure we got all the data 2037 * we needed. (this may not be the case if we got an error in 2038 * the middle of a multisector request). */ 2039 2040 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2041 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2042 /* we just successfully processed a bad144 sector 2043 * note: if we are in bad 144 mode, the pointers have 2044 * been advanced already (see above) and are pointing 2045 * at the bad144 sector. to exit bad144 mode, we 2046 * must advance the pointers 1 sector and issue a new 2047 * request if there are still sectors left to process 2048 * 2049 */ 2050 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2051 2052 /* exit b144 mode */ 2053 iorq->mode = iorq->mode & (~XD_MODE_B144); 2054 2055 if (iorq->sectcnt) { /* more to go! */ 2056 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 2057 iopb->errs = iopb->done = 0; 2058 iorq->tries = 0; 2059 iopb->sectcnt = iorq->sectcnt; 2060 iopb->cylno = iorq->blockno / 2061 iorq->xd->sectpercyl; 2062 iopb->headno = 2063 (iorq->blockno / iorq->xd->nhead) % 2064 iorq->xd->nhead; 2065 iopb->sectno = iorq->blockno % XDFM_BPS; 2066 iopb->daddr = (u_long) iorq->dbuf; 2067 XDC_HWAIT(xdcsc, rqno); 2068 xdc_start(xdcsc, 1); /* resubmit */ 2069 continue; 2070 } 2071 } 2072 /* final cleanup, totally done with this request */ 2073 2074 switch (XD_STATE(iorq->mode)) { 2075 case XD_SUB_NORM: 2076 bp = iorq->buf; 2077 if (errs) { 2078 bp->b_error = EIO; 2079 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2080 } else { 2081 bp->b_resid = 0; /* done */ 2082 } 2083 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2084 iorq->dmamap->dm_mapsize, 2085 (bp->b_flags & B_READ) 2086 ? BUS_DMASYNC_POSTREAD 2087 : BUS_DMASYNC_POSTWRITE); 2088 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2089 2090 disk_unbusy(&iorq->xd->sc_dk, 2091 (bp->b_bcount - bp->b_resid), 2092 (bp->b_flags & B_READ)); 2093 XDC_FREE(xdcsc, rqno); 2094 biodone(bp); 2095 break; 2096 case XD_SUB_WAIT: 2097 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2098 xdcsc->ndone++; 2099 wakeup(iorq); 2100 break; 2101 case XD_SUB_POLL: 2102 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2103 xdcsc->ndone++; 2104 break; 2105 } 2106 } 2107 2108 return (XD_ERR_AOK); 2109 } 2110 2111 /* 2112 * xdc_perror: print error. 2113 * - if still_trying is true: we got an error, retried and got a 2114 * different error. in that case lasterror is the old error, 2115 * and errnum is the new one. 2116 * - if still_trying is not true, then if we ever had an error it 2117 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2118 * from that error (otherwise iorq->errnum == iorq->lasterror). 2119 */ 2120 void 2121 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 2122 2123 { 2124 2125 int error = iorq->lasterror; 2126 2127 printf("%s", (iorq->xd) ? device_xname(iorq->xd->sc_dev) 2128 : device_xname(iorq->xdc->sc_dev)); 2129 if (iorq->buf) 2130 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2131 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2132 printf("%s %d/%d/%d: ", 2133 (iopb->comm == XDCMD_RD) ? "read" : "write", 2134 iopb->cylno, iopb->headno, iopb->sectno); 2135 printf("%s", xdc_e2str(error)); 2136 2137 if (still_trying) 2138 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errnum)); 2139 else 2140 if (iorq->errnum == 0) 2141 printf(" [recovered in %d tries]", iorq->tries); 2142 2143 printf("\n"); 2144 } 2145 2146 /* 2147 * xdc_error: non-fatal error encountered... recover. 2148 * return AOK if resubmitted, return FAIL if this iopb is done 2149 */ 2150 int 2151 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 2152 int rqno, int comm) 2153 2154 { 2155 int errnum = iorq->errnum; 2156 int erract = errnum & XD_ERA_MASK; 2157 int oldmode, advance; 2158 #ifdef __sparc__ 2159 int i; 2160 #endif 2161 2162 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2163 oldmode = iorq->mode; 2164 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2165 xdcsc->ndone++; 2166 /* make xdc_start ignore us */ 2167 xdc_reset(xdcsc, 1, XD_RSET_NONE, errnum, iorq->xd); 2168 iorq->mode = oldmode; 2169 xdcsc->ndone--; 2170 } 2171 /* check for read/write to a sector in bad144 table if bad: redirect 2172 * request to bad144 area */ 2173 2174 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2175 (iorq->mode & XD_MODE_B144) == 0) { 2176 advance = iorq->sectcnt - iopb->sectcnt; 2177 XDC_ADVANCE(iorq, advance); 2178 #ifdef __sparc__ 2179 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2180 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2181 iorq->blockno % iorq->xd->nsect)) != -1) { 2182 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2183 * redirect */ 2184 iopb->errnum = iopb->done = iopb->errs = 0; 2185 iopb->sectcnt = 1; 2186 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2187 /* second to last acyl */ 2188 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2189 * standard */ 2190 iopb->headno = i / iorq->xd->nhead; 2191 iopb->sectno = i % iorq->xd->nhead; 2192 XDC_HWAIT(xdcsc, rqno); 2193 xdc_start(xdcsc, 1); /* resubmit */ 2194 return (XD_ERR_AOK); /* recovered! */ 2195 } 2196 #endif 2197 } 2198 2199 /* 2200 * it isn't a bad144 sector, must be real error! see if we can retry 2201 * it? 2202 */ 2203 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2204 xdc_perror(iorq, iopb, 1); /* inform of error state 2205 * change */ 2206 iorq->lasterror = errnum; 2207 2208 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2209 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2210 iorq->tries++; 2211 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2212 XDC_HWAIT(xdcsc, rqno); 2213 xdc_start(xdcsc, 1); /* restart */ 2214 return (XD_ERR_AOK); /* recovered! */ 2215 } 2216 2217 /* failed to recover from this error */ 2218 return (XD_ERR_FAIL); 2219 } 2220 2221 /* 2222 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2223 */ 2224 void 2225 xdc_tick(void *arg) 2226 2227 { 2228 struct xdc_softc *xdcsc = arg; 2229 int lcv, s, reset = 0; 2230 #ifdef XDC_DIAG 2231 int nwait, nrun, nfree, ndone, whd = 0; 2232 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2233 s = splbio(); 2234 nwait = xdcsc->nwait; 2235 nrun = xdcsc->nrun; 2236 nfree = xdcsc->nfree; 2237 ndone = xdcsc->ndone; 2238 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2239 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2240 splx(s); 2241 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2242 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2243 device_xname(xdcsc->sc_dev), nwait, nfree, nrun, ndone, 2244 XDC_MAXIOPB); 2245 memset(mark, 0, sizeof(mark)); 2246 printf("FREE: "); 2247 for (lcv = nfree; lcv > 0; lcv--) { 2248 printf("%d ", fqc[lcv - 1]); 2249 mark[fqc[lcv - 1]] = 1; 2250 } 2251 printf("\nWAIT: "); 2252 lcv = nwait; 2253 while (lcv > 0) { 2254 printf("%d ", wqc[whd]); 2255 mark[wqc[whd]] = 1; 2256 whd = (whd + 1) % XDC_MAXIOPB; 2257 lcv--; 2258 } 2259 printf("\n"); 2260 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2261 if (mark[lcv] == 0) 2262 printf("MARK: running %d: mode %d done %d errs %d errnum 0x%x ttl %d buf %p\n", 2263 lcv, xdcsc->reqs[lcv].mode, 2264 xdcsc->iopbase[lcv].done, 2265 xdcsc->iopbase[lcv].errs, 2266 xdcsc->iopbase[lcv].errnum, 2267 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2268 } 2269 } else 2270 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2271 printf("%s: diag: lots of done jobs (%d)\n", 2272 device_xname(xdcsc->sc_dev), ndone); 2273 2274 #endif 2275 #ifdef XDC_DEBUG 2276 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2277 device_xname(xdcsc->sc_dev), 2278 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2279 xdcsc->ndone); 2280 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2281 if (xdcsc->reqs[lcv].mode) 2282 printf("running %d: mode %d done %d errs %d errnum 0x%x\n", 2283 lcv, 2284 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2285 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errnum); 2286 } 2287 #endif 2288 2289 /* reduce ttl for each request if one goes to zero, reset xdc */ 2290 s = splbio(); 2291 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2292 if (xdcsc->reqs[lcv].mode == 0 || 2293 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2294 continue; 2295 xdcsc->reqs[lcv].ttl--; 2296 if (xdcsc->reqs[lcv].ttl == 0) 2297 reset = 1; 2298 } 2299 if (reset) { 2300 printf("%s: watchdog timeout\n", device_xname(xdcsc->sc_dev)); 2301 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2302 } 2303 splx(s); 2304 2305 /* until next time */ 2306 2307 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2308 } 2309 2310 /* 2311 * xdc_ioctlcmd: this function provides a user level interface to the 2312 * controller via ioctl. this allows "format" programs to be written 2313 * in user code, and is also useful for some debugging. we return 2314 * an error code. called at user priority. 2315 */ 2316 int 2317 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2318 2319 { 2320 int s, rqno, dummy; 2321 char *dvmabuf = NULL, *buf = NULL; 2322 struct xdc_softc *xdcsc; 2323 int rseg, error; 2324 bus_dma_segment_t seg; 2325 2326 /* check sanity of requested command */ 2327 2328 switch (xio->cmd) { 2329 2330 case XDCMD_NOP: /* no op: everything should be zero */ 2331 if (xio->subfn || xio->dptr || xio->dlen || 2332 xio->block || xio->sectcnt) 2333 return (EINVAL); 2334 break; 2335 2336 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2337 case XDCMD_WR: 2338 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2339 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2340 return (EINVAL); 2341 break; 2342 2343 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2344 return (EINVAL); 2345 2346 case XDCMD_WRP: /* write parameters */ 2347 return (EINVAL);/* not useful, except maybe drive 2348 * parameters... but drive parameters should 2349 * go via disklabel changes */ 2350 2351 case XDCMD_RDP: /* read parameters */ 2352 if (xio->subfn != XDFUN_DRV || 2353 xio->dlen || xio->block || xio->dptr) 2354 return (EINVAL); /* allow read drive params to 2355 * get hw_spt */ 2356 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2357 return (0); 2358 break; 2359 2360 case XDCMD_XRD: /* extended read/write */ 2361 case XDCMD_XWR: 2362 2363 switch (xio->subfn) { 2364 2365 case XDFUN_THD:/* track headers */ 2366 if (xio->sectcnt != xd->hw_spt || 2367 (xio->block % xd->nsect) != 0 || 2368 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2369 xio->dptr == NULL) 2370 return (EINVAL); 2371 xio->sectcnt = 0; 2372 break; 2373 2374 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2375 if (xio->cmd == XDCMD_XRD) 2376 return (EINVAL); /* no XDFUN_VFY */ 2377 if (xio->sectcnt || xio->dlen || 2378 (xio->block % xd->nsect) != 0 || xio->dptr) 2379 return (EINVAL); 2380 break; 2381 2382 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2383 return (EINVAL); /* not yet */ 2384 2385 case XDFUN_DM: /* defect map */ 2386 case XDFUN_DMX:/* defect map (alternate location) */ 2387 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2388 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2389 return (EINVAL); 2390 break; 2391 2392 default: 2393 return (EINVAL); 2394 } 2395 break; 2396 2397 case XDCMD_TST: /* diagnostics */ 2398 return (EINVAL); 2399 2400 default: 2401 return (EINVAL);/* ??? */ 2402 } 2403 2404 xdcsc = xd->parent; 2405 2406 /* create DVMA buffer for request if needed */ 2407 if (xio->dlen) { 2408 bus_addr_t busbuf; 2409 2410 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2411 &seg, &rseg, 2412 xio->dlen, (void **)&buf, 2413 &busbuf)) != 0) { 2414 return (error); 2415 } 2416 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2417 2418 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2419 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2420 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2421 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2422 return (error); 2423 } 2424 } 2425 } 2426 2427 /* do it! */ 2428 2429 error = 0; 2430 s = splbio(); 2431 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2432 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2433 if (rqno == XD_ERR_FAIL) { 2434 error = EIO; 2435 goto done; 2436 } 2437 xio->errnum = xdcsc->reqs[rqno].errnum; 2438 xio->tries = xdcsc->reqs[rqno].tries; 2439 XDC_DONE(xdcsc, rqno, dummy); 2440 __USE(dummy); 2441 2442 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2443 error = copyout(buf, xio->dptr, xio->dlen); 2444 2445 done: 2446 splx(s); 2447 if (dvmabuf) { 2448 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2449 xio->dlen, buf); 2450 } 2451 return (error); 2452 } 2453 2454 /* 2455 * xdc_e2str: convert error code number into an error string 2456 */ 2457 const char * 2458 xdc_e2str(int no) 2459 { 2460 switch (no) { 2461 case XD_ERR_FAIL: 2462 return ("Software fatal error"); 2463 case XD_ERR_AOK: 2464 return ("Successful completion"); 2465 case XD_ERR_ICYL: 2466 return ("Illegal cylinder address"); 2467 case XD_ERR_IHD: 2468 return ("Illegal head address"); 2469 case XD_ERR_ISEC: 2470 return ("Illgal sector address"); 2471 case XD_ERR_CZER: 2472 return ("Count zero"); 2473 case XD_ERR_UIMP: 2474 return ("Unimplemented command"); 2475 case XD_ERR_IF1: 2476 return ("Illegal field length 1"); 2477 case XD_ERR_IF2: 2478 return ("Illegal field length 2"); 2479 case XD_ERR_IF3: 2480 return ("Illegal field length 3"); 2481 case XD_ERR_IF4: 2482 return ("Illegal field length 4"); 2483 case XD_ERR_IF5: 2484 return ("Illegal field length 5"); 2485 case XD_ERR_IF6: 2486 return ("Illegal field length 6"); 2487 case XD_ERR_IF7: 2488 return ("Illegal field length 7"); 2489 case XD_ERR_ISG: 2490 return ("Illegal scatter/gather length"); 2491 case XD_ERR_ISPT: 2492 return ("Not enough sectors per track"); 2493 case XD_ERR_ALGN: 2494 return ("Next IOPB address alignment error"); 2495 case XD_ERR_SGAL: 2496 return ("Scatter/gather address alignment error"); 2497 case XD_ERR_SGEC: 2498 return ("Scatter/gather with auto-ECC"); 2499 case XD_ERR_SECC: 2500 return ("Soft ECC corrected"); 2501 case XD_ERR_SIGN: 2502 return ("ECC ignored"); 2503 case XD_ERR_ASEK: 2504 return ("Auto-seek retry recovered"); 2505 case XD_ERR_RTRY: 2506 return ("Soft retry recovered"); 2507 case XD_ERR_HECC: 2508 return ("Hard data ECC"); 2509 case XD_ERR_NHDR: 2510 return ("Header not found"); 2511 case XD_ERR_NRDY: 2512 return ("Drive not ready"); 2513 case XD_ERR_TOUT: 2514 return ("Operation timeout"); 2515 case XD_ERR_VTIM: 2516 return ("VMEDMA timeout"); 2517 case XD_ERR_DSEQ: 2518 return ("Disk sequencer error"); 2519 case XD_ERR_HDEC: 2520 return ("Header ECC error"); 2521 case XD_ERR_RVFY: 2522 return ("Read verify"); 2523 case XD_ERR_VFER: 2524 return ("Fatail VMEDMA error"); 2525 case XD_ERR_VBUS: 2526 return ("VMEbus error"); 2527 case XD_ERR_DFLT: 2528 return ("Drive faulted"); 2529 case XD_ERR_HECY: 2530 return ("Header error/cyliner"); 2531 case XD_ERR_HEHD: 2532 return ("Header error/head"); 2533 case XD_ERR_NOCY: 2534 return ("Drive not on-cylinder"); 2535 case XD_ERR_SEEK: 2536 return ("Seek error"); 2537 case XD_ERR_ILSS: 2538 return ("Illegal sector size"); 2539 case XD_ERR_SEC: 2540 return ("Soft ECC"); 2541 case XD_ERR_WPER: 2542 return ("Write-protect error"); 2543 case XD_ERR_IRAM: 2544 return ("IRAM self test failure"); 2545 case XD_ERR_MT3: 2546 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2547 case XD_ERR_MT4: 2548 return ("Maintenance test 4 failure (header shift reg)"); 2549 case XD_ERR_MT5: 2550 return ("Maintenance test 5 failure (VMEDMA regs)"); 2551 case XD_ERR_MT6: 2552 return ("Maintenance test 6 failure (REGCEL chip)"); 2553 case XD_ERR_MT7: 2554 return ("Maintenance test 7 failure (buffer parity)"); 2555 case XD_ERR_MT8: 2556 return ("Maintenance test 8 failure (disk FIFO)"); 2557 case XD_ERR_IOCK: 2558 return ("IOPB checksum miscompare"); 2559 case XD_ERR_IODM: 2560 return ("IOPB DMA fatal"); 2561 case XD_ERR_IOAL: 2562 return ("IOPB address alignment error"); 2563 case XD_ERR_FIRM: 2564 return ("Firmware error"); 2565 case XD_ERR_MMOD: 2566 return ("Illegal maintenance mode test number"); 2567 case XD_ERR_ACFL: 2568 return ("ACFAIL asserted"); 2569 default: 2570 return ("Unknown error"); 2571 } 2572 } 2573