1 /* $NetBSD: xd.c,v 1.88 2012/02/12 16:34:12 matt 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 1.88 2012/02/12 16:34:12 matt 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(xdc, sizeof(struct xdc_softc), 278 xdcmatch, xdcattach, NULL, NULL); 279 280 CFATTACH_DECL(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_md_setup(); 488 489 /* get addressing and intr level stuff from autoconfig and load it 490 * into our xdc_softc. */ 491 492 xdc->dmatag = va->va_bdt; 493 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 494 495 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 496 panic("xdc: vme alloc"); 497 498 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 499 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 500 panic("xdc: vme_map"); 501 502 xdc->xdc = (struct xdc *) bh; /* XXX */ 503 xdc->ipl = va->ilevel; 504 xdc->vector = va->ivector; 505 506 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 507 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 508 509 /* 510 * allocate and zero buffers 511 * 512 * note: we simplify the code by allocating the max number of iopbs and 513 * iorq's up front. thus, we avoid linked lists and the costs 514 * associated with them in exchange for wasting a little memory. 515 */ 516 517 /* Get DMA handle for misc. transfers */ 518 if ((error = vme_dmamap_create( 519 ct, /* VME chip tag */ 520 MAXPHYS, /* size */ 521 VME_AM_A24, /* address modifier */ 522 VME_D32, /* data size */ 523 0, /* swap */ 524 1, /* nsegments */ 525 MAXPHYS, /* maxsegsz */ 526 0, /* boundary */ 527 BUS_DMA_NOWAIT, 528 &xdc->auxmap)) != 0) { 529 530 aprint_error_dev(&xdc->sc_dev, "DMA buffer map create error %d\n", 531 error); 532 return; 533 } 534 535 536 /* Get DMA handle for mapping iorq descriptors */ 537 if ((error = vme_dmamap_create( 538 ct, /* VME chip tag */ 539 XDC_MAXIOPB * sizeof(struct xd_iopb), 540 VME_AM_A24, /* address modifier */ 541 VME_D32, /* data size */ 542 0, /* swap */ 543 1, /* nsegments */ 544 XDC_MAXIOPB * sizeof(struct xd_iopb), 545 0, /* boundary */ 546 BUS_DMA_NOWAIT, 547 &xdc->iopmap)) != 0) { 548 549 aprint_error_dev(&xdc->sc_dev, "DMA buffer map create error %d\n", 550 error); 551 return; 552 } 553 554 /* Get DMA buffer for iorq descriptors */ 555 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 556 XDC_MAXIOPB * sizeof(struct xd_iopb), 557 (void **)&xdc->iopbase, 558 &busaddr)) != 0) { 559 aprint_error_dev(&xdc->sc_dev, "DMA buffer alloc error %d\n", 560 error); 561 return; 562 } 563 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 564 565 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 566 567 xdc->reqs = (struct xd_iorq *) 568 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 569 M_DEVBUF, M_NOWAIT|M_ZERO); 570 if (xdc->reqs == NULL) 571 panic("xdc malloc"); 572 573 /* init free list, iorq to iopb pointers, and non-zero fields in the 574 * iopb which never change. */ 575 576 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 577 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 578 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 579 xdc->freereq[lcv] = lcv; 580 xdc->iopbase[lcv].fixd = 1; /* always the same */ 581 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 582 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 583 584 if ((error = vme_dmamap_create( 585 ct, /* VME chip tag */ 586 MAXPHYS, /* size */ 587 VME_AM_A24, /* address modifier */ 588 VME_D32, /* data size */ 589 0, /* swap */ 590 1, /* nsegments */ 591 MAXPHYS, /* maxsegsz */ 592 0, /* boundary */ 593 BUS_DMA_NOWAIT, 594 &xdc->reqs[lcv].dmamap)) != 0) { 595 596 aprint_error_dev(&xdc->sc_dev, "DMA buffer map create error %d\n", 597 error); 598 return; 599 } 600 } 601 xdc->nfree = XDC_MAXIOPB; 602 xdc->nrun = 0; 603 xdc->waithead = xdc->waitend = xdc->nwait = 0; 604 xdc->ndone = 0; 605 606 /* init queue of waiting bufs */ 607 608 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 609 callout_init(&xdc->sc_tick_ch, 0); 610 611 /* 612 * section 7 of the manual tells us how to init the controller: 613 * - read controller parameters (6/0) 614 * - write controller parameters (5/0) 615 */ 616 617 /* read controller parameters and insure we have a 753/7053 */ 618 619 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 620 if (rqno == XD_ERR_FAIL) { 621 printf(": couldn't read controller params\n"); 622 return; /* shouldn't ever happen */ 623 } 624 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 625 if (ctl->ctype != XDCT_753) { 626 if (xdc->reqs[rqno].errnum) 627 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errnum)); 628 printf(": doesn't identify as a 753/7053\n"); 629 XDC_DONE(xdc, rqno, error); 630 return; 631 } 632 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 633 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 634 XDC_DONE(xdc, rqno, error); 635 636 /* now write controller parameters (xdc_cmd sets all params for us) */ 637 638 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 639 XDC_DONE(xdc, rqno, error); 640 if (error) { 641 aprint_error_dev(&xdc->sc_dev, "controller config error: %s\n", 642 xdc_e2str(error)); 643 return; 644 } 645 646 /* link in interrupt with higher level software */ 647 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 648 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 649 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 650 device_xname(&xdc->sc_dev), "intr"); 651 652 653 /* now we must look for disks using autoconfig */ 654 xa.fullmode = XD_SUB_POLL; 655 xa.booting = 1; 656 657 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 658 (void) config_found(self, (void *) &xa, NULL); 659 660 /* start the watchdog clock */ 661 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 662 663 } 664 665 /* 666 * xdmatch: probe for disk. 667 * 668 * note: we almost always say disk is present. this allows us to 669 * spin up and configure a disk after the system is booted (we can 670 * call xdattach!). 671 */ 672 int 673 xdmatch(device_t parent, cfdata_t cf, void *aux) 674 { 675 struct xdc_attach_args *xa = aux; 676 677 /* looking for autoconf wildcard or exact match */ 678 679 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 680 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 681 return 0; 682 683 return 1; 684 685 } 686 687 /* 688 * xdattach: attach a disk. this can be called from autoconf and also 689 * from xdopen/xdstrategy. 690 */ 691 void 692 xdattach(device_t parent, device_t self, void *aux) 693 { 694 struct xd_softc *xd = device_private(self); 695 struct xdc_softc *xdc = device_private(parent); 696 struct xdc_attach_args *xa = aux; 697 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 698 struct xd_iopb_drive *driopb; 699 struct dkbad *dkb; 700 int rseg, error; 701 bus_dma_segment_t seg; 702 bus_addr_t busaddr; 703 void * dmaddr; 704 char * buf; 705 706 /* 707 * Always re-initialize the disk structure. We want statistics 708 * to start with a clean slate. 709 */ 710 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 711 712 /* if booting, init the xd_softc */ 713 714 if (xa->booting) { 715 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 716 xd->flags = 0; 717 xd->parent = xdc; 718 } 719 xd->xd_drive = xa->driveno; 720 fmode = xa->fullmode; 721 xdc->sc_drives[xa->driveno] = xd; 722 723 /* if not booting, make sure we are the only process in the attach for 724 * this drive. if locked out, sleep on it. */ 725 726 if (!xa->booting) { 727 s = splbio(); 728 while (xd->state == XD_DRIVE_ATTACHING) { 729 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 730 splx(s); 731 return; 732 } 733 } 734 printf("%s at %s", 735 device_xname(&xd->sc_dev), device_xname(&xd->parent->sc_dev)); 736 } 737 738 /* we now have control */ 739 xd->state = XD_DRIVE_ATTACHING; 740 newstate = XD_DRIVE_UNKNOWN; 741 742 buf = NULL; 743 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 744 XDFM_BPS, 745 (void **)&buf, 746 &busaddr)) != 0) { 747 aprint_error_dev(&xdc->sc_dev, "DMA buffer alloc error %d\n", 748 error); 749 return; 750 } 751 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 752 753 /* first try and reset the drive */ 754 755 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 756 XDC_DONE(xdc, rqno, error); 757 if (error == XD_ERR_NRDY) { 758 printf(" drive %d: off-line\n", xa->driveno); 759 goto done; 760 } 761 if (error) { 762 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 763 goto done; 764 } 765 printf(" drive %d: ready\n", xa->driveno); 766 767 /* now set format parameters */ 768 769 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 770 XDC_DONE(xdc, rqno, error); 771 if (error) { 772 aprint_error_dev(&xd->sc_dev, "write format parameters failed: %s\n", 773 xdc_e2str(error)); 774 goto done; 775 } 776 777 /* get drive parameters */ 778 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 779 if (rqno != XD_ERR_FAIL) { 780 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 781 spt = driopb->sectpertrk; 782 } 783 XDC_DONE(xdc, rqno, error); 784 if (error) { 785 aprint_error_dev(&xd->sc_dev, "read drive parameters failed: %s\n", 786 xdc_e2str(error)); 787 goto done; 788 } 789 790 /* 791 * now set drive parameters (to semi-bogus values) so we can read the 792 * disk label. 793 */ 794 xd->pcyl = xd->ncyl = 1; 795 xd->acyl = 0; 796 xd->nhead = 1; 797 xd->nsect = 1; 798 xd->sectpercyl = 1; 799 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 800 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 801 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 802 XDC_DONE(xdc, rqno, error); 803 if (error) { 804 aprint_error_dev(&xd->sc_dev, "write drive parameters failed: %s\n", 805 xdc_e2str(error)); 806 goto done; 807 } 808 809 /* read disk label */ 810 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 811 XDC_DONE(xdc, rqno, error); 812 if (error) { 813 aprint_error_dev(&xd->sc_dev, "reading disk label failed: %s\n", 814 xdc_e2str(error)); 815 goto done; 816 } 817 newstate = XD_DRIVE_NOLABEL; 818 819 xd->hw_spt = spt; 820 /* Attach the disk: must be before getdisklabel to malloc label */ 821 disk_init(&xd->sc_dk, device_xname(&xd->sc_dev), &xddkdriver); 822 disk_attach(&xd->sc_dk); 823 824 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 825 goto done; 826 827 /* inform the user of what is up */ 828 printf("%s: <%s>, pcyl %d, hw_spt %d\n", device_xname(&xd->sc_dev), 829 buf, xd->pcyl, spt); 830 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 831 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 832 device_xname(&xd->sc_dev), mb, xd->ncyl, xd->nhead, xd->nsect, 833 XDFM_BPS); 834 835 /* now set the real drive parameters! */ 836 837 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 838 XDC_DONE(xdc, rqno, error); 839 if (error) { 840 aprint_error_dev(&xd->sc_dev, "write real drive parameters failed: %s\n", 841 xdc_e2str(error)); 842 goto done; 843 } 844 newstate = XD_DRIVE_ONLINE; 845 846 /* 847 * read bad144 table. this table resides on the first sector of the 848 * last track of the disk (i.e. second cyl of "acyl" area). 849 */ 850 851 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 852 (xd->nhead - 1) * xd->nsect; /* last head */ 853 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 854 XDC_DONE(xdc, rqno, error); 855 if (error) { 856 aprint_error_dev(&xd->sc_dev, "reading bad144 failed: %s\n", 857 xdc_e2str(error)); 858 goto done; 859 } 860 861 /* check dkbad for sanity */ 862 dkb = (struct dkbad *) buf; 863 for (lcv = 0; lcv < 126; lcv++) { 864 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 865 dkb->bt_bad[lcv].bt_cyl == 0) && 866 dkb->bt_bad[lcv].bt_trksec == 0xffff) 867 continue; /* blank */ 868 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 869 break; 870 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 871 break; 872 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 873 break; 874 } 875 if (lcv != 126) { 876 aprint_error_dev(&xd->sc_dev, "warning: invalid bad144 sector!\n"); 877 } else { 878 memcpy(&xd->dkb, buf, XDFM_BPS); 879 } 880 881 done: 882 if (buf != NULL) { 883 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 884 &seg, rseg, XDFM_BPS, buf); 885 } 886 887 xd->state = newstate; 888 if (!xa->booting) { 889 wakeup(&xd->state); 890 splx(s); 891 } 892 } 893 894 /* 895 * end of autoconfig functions 896 */ 897 898 /* 899 * { b , c } d e v s w f u n c t i o n s 900 */ 901 902 /* 903 * xdclose: close device 904 */ 905 int 906 xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 907 { 908 struct xd_softc *xd = device_lookup_private(&xd_cd, DISKUNIT(dev)); 909 int part = DISKPART(dev); 910 911 /* clear mask bits */ 912 913 switch (fmt) { 914 case S_IFCHR: 915 xd->sc_dk.dk_copenmask &= ~(1 << part); 916 break; 917 case S_IFBLK: 918 xd->sc_dk.dk_bopenmask &= ~(1 << part); 919 break; 920 } 921 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 922 923 return 0; 924 } 925 926 /* 927 * xddump: crash dump system 928 */ 929 int 930 xddump(dev_t dev, daddr_t blkno, void *va, size_t size) 931 { 932 int unit, part; 933 struct xd_softc *xd; 934 935 unit = DISKUNIT(dev); 936 part = DISKPART(dev); 937 938 xd = device_lookup_private(&xd_cd, unit); 939 if (!xd) 940 return ENXIO; 941 942 printf("%s%c: crash dump not supported (yet)\n", device_xname(&xd->sc_dev), 943 'a' + part); 944 945 return ENXIO; 946 947 /* outline: globals: "dumplo" == sector number of partition to start 948 * dump at (convert to physical sector with partition table) 949 * "dumpsize" == size of dump in clicks "physmem" == size of physical 950 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 951 * physmem) 952 * 953 * dump a copy of physical memory to the dump device starting at sector 954 * "dumplo" in the swap partition (make sure > 0). map in pages as 955 * we go. use polled I/O. 956 * 957 * XXX how to handle NON_CONTIG? */ 958 959 } 960 961 static enum kauth_device_req 962 xd_getkauthreq(u_char cmd) 963 { 964 enum kauth_device_req req; 965 966 switch (cmd) { 967 case XDCMD_WR: 968 case XDCMD_XWR: 969 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 970 break; 971 972 case XDCMD_RD: 973 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 974 break; 975 976 case XDCMD_RDP: 977 case XDCMD_XRD: 978 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 979 break; 980 981 case XDCMD_WRP: 982 case XDCMD_RST: 983 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 984 break; 985 986 case XDCMD_NOP: 987 case XDCMD_SK: 988 case XDCMD_TST: 989 default: 990 req = 0; 991 break; 992 } 993 994 return (req); 995 } 996 997 /* 998 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 999 */ 1000 int 1001 xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 1002 1003 { 1004 struct xd_softc *xd; 1005 struct xd_iocmd *xio; 1006 int error, s, unit; 1007 #ifdef __HAVE_OLD_DISKLABEL 1008 struct disklabel newlabel; 1009 #endif 1010 struct disklabel *lp; 1011 1012 unit = DISKUNIT(dev); 1013 1014 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1015 return (ENXIO); 1016 1017 /* switch on ioctl type */ 1018 1019 switch (command) { 1020 case DIOCSBAD: /* set bad144 info */ 1021 if ((flag & FWRITE) == 0) 1022 return EBADF; 1023 s = splbio(); 1024 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 1025 splx(s); 1026 return 0; 1027 1028 case DIOCGDINFO: /* get disk label */ 1029 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 1030 return 0; 1031 #ifdef __HAVE_OLD_DISKLABEL 1032 case ODIOCGDINFO: 1033 newlabel = *(xd->sc_dk.dk_label); 1034 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1035 return ENOTTY; 1036 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1037 return 0; 1038 #endif 1039 1040 case DIOCGPART: /* get partition info */ 1041 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1042 ((struct partinfo *) addr)->part = 1043 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1044 return 0; 1045 1046 case DIOCSDINFO: /* set disk label */ 1047 #ifdef __HAVE_OLD_DISKLABEL 1048 case ODIOCSDINFO: 1049 if (command == ODIOCSDINFO) { 1050 memset(&newlabel, 0, sizeof newlabel); 1051 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1052 lp = &newlabel; 1053 } else 1054 #endif 1055 lp = (struct disklabel *)addr; 1056 1057 if ((flag & FWRITE) == 0) 1058 return EBADF; 1059 error = setdisklabel(xd->sc_dk.dk_label, 1060 lp, /* xd->sc_dk.dk_openmask : */ 0, 1061 xd->sc_dk.dk_cpulabel); 1062 if (error == 0) { 1063 if (xd->state == XD_DRIVE_NOLABEL) 1064 xd->state = XD_DRIVE_ONLINE; 1065 } 1066 return error; 1067 1068 case DIOCWLABEL: /* change write status of disk label */ 1069 if ((flag & FWRITE) == 0) 1070 return EBADF; 1071 if (*(int *) addr) 1072 xd->flags |= XD_WLABEL; 1073 else 1074 xd->flags &= ~XD_WLABEL; 1075 return 0; 1076 1077 case DIOCWDINFO: /* write disk label */ 1078 #ifdef __HAVE_OLD_DISKLABEL 1079 case ODIOCWDINFO: 1080 if (command == ODIOCWDINFO) { 1081 memset(&newlabel, 0, sizeof newlabel); 1082 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1083 lp = &newlabel; 1084 } else 1085 #endif 1086 lp = (struct disklabel *)addr; 1087 1088 if ((flag & FWRITE) == 0) 1089 return EBADF; 1090 error = setdisklabel(xd->sc_dk.dk_label, 1091 lp, /* xd->sc_dk.dk_openmask : */ 0, 1092 xd->sc_dk.dk_cpulabel); 1093 if (error == 0) { 1094 if (xd->state == XD_DRIVE_NOLABEL) 1095 xd->state = XD_DRIVE_ONLINE; 1096 1097 /* Simulate opening partition 0 so write succeeds. */ 1098 xd->sc_dk.dk_openmask |= (1 << 0); 1099 error = writedisklabel(MAKEDISKDEV(major(dev), 1100 DISKUNIT(dev), RAW_PART), 1101 xdstrategy, xd->sc_dk.dk_label, 1102 xd->sc_dk.dk_cpulabel); 1103 xd->sc_dk.dk_openmask = 1104 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1105 } 1106 return error; 1107 1108 case DIOSXDCMD: { 1109 enum kauth_device_req req; 1110 1111 xio = (struct xd_iocmd *) addr; 1112 req = xd_getkauthreq(xio->cmd); 1113 if ((error = kauth_authorize_device_passthru(l->l_cred, 1114 dev, req, xio)) != 0) 1115 return (error); 1116 return (xdc_ioctlcmd(xd, dev, xio)); 1117 } 1118 1119 default: 1120 return ENOTTY; 1121 } 1122 } 1123 /* 1124 * xdopen: open drive 1125 */ 1126 1127 int 1128 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1129 { 1130 int unit, part; 1131 struct xd_softc *xd; 1132 struct xdc_attach_args xa; 1133 1134 /* first, could it be a valid target? */ 1135 1136 unit = DISKUNIT(dev); 1137 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1138 return (ENXIO); 1139 part = DISKPART(dev); 1140 1141 /* do we need to attach the drive? */ 1142 1143 if (xd->state == XD_DRIVE_UNKNOWN) { 1144 xa.driveno = xd->xd_drive; 1145 xa.fullmode = XD_SUB_WAIT; 1146 xa.booting = 0; 1147 xdattach((device_t) xd->parent, (device_t) xd, &xa); 1148 if (xd->state == XD_DRIVE_UNKNOWN) { 1149 return (EIO); 1150 } 1151 } 1152 /* check for partition */ 1153 1154 if (part != RAW_PART && 1155 (part >= xd->sc_dk.dk_label->d_npartitions || 1156 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1157 return (ENXIO); 1158 } 1159 /* set open masks */ 1160 1161 switch (fmt) { 1162 case S_IFCHR: 1163 xd->sc_dk.dk_copenmask |= (1 << part); 1164 break; 1165 case S_IFBLK: 1166 xd->sc_dk.dk_bopenmask |= (1 << part); 1167 break; 1168 } 1169 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1170 1171 return 0; 1172 } 1173 1174 int 1175 xdread(dev_t dev, struct uio *uio, int flags) 1176 { 1177 1178 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1179 } 1180 1181 int 1182 xdwrite(dev_t dev, struct uio *uio, int flags) 1183 { 1184 1185 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1186 } 1187 1188 1189 /* 1190 * xdsize: return size of a partition for a dump 1191 */ 1192 1193 int 1194 xdsize(dev_t dev) 1195 { 1196 struct xd_softc *xdsc; 1197 int unit, part, size, omask; 1198 1199 /* valid unit? */ 1200 unit = DISKUNIT(dev); 1201 if ((xdsc = device_lookup_private(&xd_cd, unit)) == NULL) 1202 return (-1); 1203 1204 part = DISKPART(dev); 1205 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1206 1207 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1208 return (-1); 1209 1210 /* do it */ 1211 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1212 size = -1; /* only give valid size for swap partitions */ 1213 else 1214 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1215 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1216 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1217 return (-1); 1218 return (size); 1219 } 1220 /* 1221 * xdstrategy: buffering system interface to xd. 1222 */ 1223 1224 void 1225 xdstrategy(struct buf *bp) 1226 { 1227 struct xd_softc *xd; 1228 struct xdc_softc *parent; 1229 int s, unit; 1230 struct xdc_attach_args xa; 1231 1232 unit = DISKUNIT(bp->b_dev); 1233 1234 /* check for live device */ 1235 1236 if (!(xd = device_lookup_private(&xd_cd, unit)) || 1237 bp->b_blkno < 0 || 1238 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1239 bp->b_error = EINVAL; 1240 goto done; 1241 } 1242 /* do we need to attach the drive? */ 1243 1244 if (xd->state == XD_DRIVE_UNKNOWN) { 1245 xa.driveno = xd->xd_drive; 1246 xa.fullmode = XD_SUB_WAIT; 1247 xa.booting = 0; 1248 xdattach((device_t)xd->parent, (device_t)xd, &xa); 1249 if (xd->state == XD_DRIVE_UNKNOWN) { 1250 bp->b_error = EIO; 1251 goto done; 1252 } 1253 } 1254 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1255 /* no I/O to unlabeled disks, unless raw partition */ 1256 bp->b_error = EIO; 1257 goto done; 1258 } 1259 /* short circuit zero length request */ 1260 1261 if (bp->b_bcount == 0) 1262 goto done; 1263 1264 /* check bounds with label (disksubr.c). Determine the size of the 1265 * transfer, and make sure it is within the boundaries of the 1266 * partition. Adjust transfer if needed, and signal errors or early 1267 * completion. */ 1268 1269 if (bounds_check_with_label(&xd->sc_dk, bp, 1270 (xd->flags & XD_WLABEL) != 0) <= 0) 1271 goto done; 1272 1273 /* 1274 * now we know we have a valid buf structure that we need to do I/O 1275 * on. 1276 * 1277 * note that we don't disksort because the controller has a sorting 1278 * algorithm built into the hardware. 1279 */ 1280 1281 s = splbio(); /* protect the queues */ 1282 1283 /* first, give jobs in front of us a chance */ 1284 parent = xd->parent; 1285 while (parent->nfree > 0 && bufq_peek(parent->sc_wq) != NULL) 1286 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1287 break; 1288 1289 /* if there are no free iorq's, then we just queue and return. the 1290 * buffs will get picked up later by xdcintr(). 1291 */ 1292 1293 if (parent->nfree == 0) { 1294 bufq_put(parent->sc_wq, bp); 1295 splx(s); 1296 return; 1297 } 1298 1299 /* now we have free iopb's and we are at splbio... start 'em up */ 1300 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1301 return; 1302 } 1303 1304 /* done! */ 1305 1306 splx(s); 1307 return; 1308 1309 done: /* tells upper layers we are done with this 1310 * buf */ 1311 bp->b_resid = bp->b_bcount; 1312 biodone(bp); 1313 } 1314 /* 1315 * end of {b,c}devsw functions 1316 */ 1317 1318 /* 1319 * i n t e r r u p t f u n c t i o n 1320 * 1321 * xdcintr: hardware interrupt. 1322 */ 1323 int 1324 xdcintr(void *v) 1325 { 1326 struct xdc_softc *xdcsc = v; 1327 1328 /* kick the event counter */ 1329 1330 xdcsc->sc_intrcnt.ev_count++; 1331 1332 /* remove as many done IOPBs as possible */ 1333 1334 xdc_remove_iorq(xdcsc); 1335 1336 /* start any iorq's already waiting */ 1337 1338 xdc_start(xdcsc, XDC_MAXIOPB); 1339 1340 /* fill up any remaining iorq's with queue'd buffers */ 1341 1342 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1343 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1344 break; 1345 1346 return (1); 1347 } 1348 /* 1349 * end of interrupt function 1350 */ 1351 1352 /* 1353 * i n t e r n a l f u n c t i o n s 1354 */ 1355 1356 /* 1357 * xdc_rqinit: fill out the fields of an I/O request 1358 */ 1359 1360 inline void 1361 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) 1362 { 1363 rq->xdc = xdc; 1364 rq->xd = xd; 1365 rq->ttl = XDC_MAXTTL + 10; 1366 rq->mode = md; 1367 rq->tries = rq->errnum = rq->lasterror = 0; 1368 rq->blockno = blk; 1369 rq->sectcnt = cnt; 1370 rq->dbuf = db; 1371 rq->buf = bp; 1372 } 1373 /* 1374 * xdc_rqtopb: load up an IOPB based on an iorq 1375 */ 1376 1377 void 1378 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1379 { 1380 u_long block, dp; 1381 1382 /* standard stuff */ 1383 1384 iopb->errs = iopb->done = 0; 1385 iopb->comm = cmd; 1386 iopb->errnum = iopb->status = 0; 1387 iopb->subfun = subfun; 1388 if (iorq->xd) 1389 iopb->unit = iorq->xd->xd_drive; 1390 else 1391 iopb->unit = 0; 1392 1393 /* check for alternate IOPB format */ 1394 1395 if (cmd == XDCMD_WRP) { 1396 switch (subfun) { 1397 case XDFUN_CTL:{ 1398 struct xd_iopb_ctrl *ctrl = 1399 (struct xd_iopb_ctrl *) iopb; 1400 iopb->lll = 0; 1401 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1402 ? 0 1403 : iorq->xdc->ipl; 1404 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1405 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1406 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1407 XDPC_RBC | XDPC_ECC2; 1408 ctrl->throttle = XDC_THROTTLE; 1409 ctrl->delay = XDC_DELAY; 1410 break; 1411 } 1412 case XDFUN_DRV:{ 1413 struct xd_iopb_drive *drv = 1414 (struct xd_iopb_drive *)iopb; 1415 /* we assume that the disk label has the right 1416 * info */ 1417 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1418 drv->dparam_ipl = (XDC_DPARAM << 3); 1419 else 1420 drv->dparam_ipl = (XDC_DPARAM << 3) | 1421 iorq->xdc->ipl; 1422 drv->maxsect = iorq->xd->nsect - 1; 1423 drv->maxsector = drv->maxsect; 1424 /* note: maxsector != maxsect only if you are 1425 * doing cyl sparing */ 1426 drv->headoff = 0; 1427 drv->maxcyl = iorq->xd->pcyl - 1; 1428 drv->maxhead = iorq->xd->nhead - 1; 1429 break; 1430 } 1431 case XDFUN_FMT:{ 1432 struct xd_iopb_format *form = 1433 (struct xd_iopb_format *) iopb; 1434 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1435 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1436 else 1437 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1438 iorq->xdc->ipl; 1439 form->field1 = XDFM_FIELD1; 1440 form->field2 = XDFM_FIELD2; 1441 form->field3 = XDFM_FIELD3; 1442 form->field4 = XDFM_FIELD4; 1443 form->bytespersec = XDFM_BPS; 1444 form->field6 = XDFM_FIELD6; 1445 form->field7 = XDFM_FIELD7; 1446 break; 1447 } 1448 } 1449 } else { 1450 1451 /* normal IOPB case (harmless to RDP command) */ 1452 1453 iopb->lll = 0; 1454 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1455 ? 0 1456 : iorq->xdc->ipl; 1457 iopb->sectcnt = iorq->sectcnt; 1458 block = iorq->blockno; 1459 if (iorq->xd == NULL || block == 0) { 1460 iopb->sectno = iopb->headno = iopb->cylno = 0; 1461 } else { 1462 iopb->sectno = block % iorq->xd->nsect; 1463 block = block / iorq->xd->nsect; 1464 iopb->headno = block % iorq->xd->nhead; 1465 block = block / iorq->xd->nhead; 1466 iopb->cylno = block; 1467 } 1468 dp = (u_long) iorq->dbuf; 1469 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1470 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1471 ? XDC_ADDRMOD32 1472 : XDC_ADDRMOD; 1473 } 1474 } 1475 1476 /* 1477 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1478 * If you've already got an IORQ, you can call submit directly (currently 1479 * there is no need to do this). NORM requests are handled separately. 1480 */ 1481 int 1482 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1483 int scnt, char *dptr, int fullmode) 1484 { 1485 int rqno, submode = XD_STATE(fullmode), retry; 1486 struct xd_iorq *iorq; 1487 struct xd_iopb *iopb; 1488 1489 /* get iorq/iopb */ 1490 switch (submode) { 1491 case XD_SUB_POLL: 1492 while (xdcsc->nfree == 0) { 1493 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1494 return (XD_ERR_FAIL); 1495 } 1496 break; 1497 case XD_SUB_WAIT: 1498 retry = 1; 1499 while (retry) { 1500 while (xdcsc->nfree == 0) { 1501 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1502 return (XD_ERR_FAIL); 1503 } 1504 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1505 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1506 return (XD_ERR_FAIL); 1507 } 1508 if (xdcsc->nfree) 1509 retry = 0; /* got it */ 1510 } 1511 break; 1512 default: 1513 return (XD_ERR_FAIL); /* illegal */ 1514 } 1515 if (xdcsc->nfree == 0) 1516 panic("xdcmd nfree"); 1517 rqno = XDC_RQALLOC(xdcsc); 1518 iorq = &xdcsc->reqs[rqno]; 1519 iopb = iorq->iopb; 1520 1521 1522 /* init iorq/iopb */ 1523 1524 xdc_rqinit(iorq, xdcsc, 1525 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1526 fullmode, block, scnt, dptr, NULL); 1527 1528 /* load IOPB from iorq */ 1529 1530 xdc_rqtopb(iorq, iopb, cmd, subfn); 1531 1532 /* submit it for processing */ 1533 1534 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1535 1536 return (rqno); 1537 } 1538 /* 1539 * xdc_startbuf 1540 * start a buffer running, assumes nfree > 0 1541 */ 1542 1543 int 1544 xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1545 { 1546 int rqno, partno; 1547 struct xd_iorq *iorq; 1548 struct xd_iopb *iopb; 1549 u_long block; 1550 /* void *dbuf;*/ 1551 int error; 1552 1553 if (!xdcsc->nfree) 1554 panic("xdc_startbuf free"); 1555 rqno = XDC_RQALLOC(xdcsc); 1556 iorq = &xdcsc->reqs[rqno]; 1557 iopb = iorq->iopb; 1558 1559 /* get buf */ 1560 1561 if (bp == NULL) { 1562 bp = bufq_get(xdcsc->sc_wq); 1563 if (bp == NULL) 1564 panic("xdc_startbuf bp"); 1565 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1566 } 1567 partno = DISKPART(bp->b_dev); 1568 #ifdef XDC_DEBUG 1569 printf("xdc_startbuf: %s%c: %s block %d\n", device_xname(&xdsc->sc_dev), 1570 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1571 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1572 bp->b_bcount, bp->b_data); 1573 #endif 1574 1575 /* 1576 * load request. we have to calculate the correct block number based 1577 * on partition info. 1578 * 1579 * note that iorq points to the buffer as mapped into DVMA space, 1580 * where as the bp->b_data points to its non-DVMA mapping. 1581 */ 1582 1583 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1584 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1585 1586 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1587 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1588 if (error != 0) { 1589 aprint_error_dev(&xdcsc->sc_dev, "warning: cannot load DMA map\n"); 1590 XDC_FREE(xdcsc, rqno); 1591 bufq_put(xdcsc->sc_wq, bp); 1592 return (XD_ERR_FAIL); /* XXX: need some sort of 1593 * call-back scheme here? */ 1594 } 1595 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1596 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1597 ? BUS_DMASYNC_PREREAD 1598 : BUS_DMASYNC_PREWRITE); 1599 1600 /* init iorq and load iopb from it */ 1601 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1602 bp->b_bcount / XDFM_BPS, 1603 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1604 bp); 1605 1606 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1607 1608 /* Instrumentation. */ 1609 disk_busy(&xdsc->sc_dk); 1610 1611 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1612 1613 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1614 return (XD_ERR_AOK); 1615 } 1616 1617 1618 /* 1619 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1620 * if ok. if it fail returns an error code. type is XD_SUB_*. 1621 * 1622 * note: caller frees iorq in all cases except NORM 1623 * 1624 * return value: 1625 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1626 * WAIT: XD_AOK (success), <error-code> (failed) 1627 * POLL: <same as WAIT> 1628 * NOQ : <same as NORM> 1629 * 1630 * there are three sources for i/o requests: 1631 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1632 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1633 * [3] open/ioctl: these are I/O requests done in the context of a process, 1634 * and the process should block until they are done. 1635 * 1636 * software state is stored in the iorq structure. each iorq has an 1637 * iopb structure. the hardware understands the iopb structure. 1638 * every command must go through an iopb. a 7053 can only handle 1639 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1640 * DVMA space at boot up time. what happens if we run out of iopb's? 1641 * for i/o type [1], the buffers are queued at the "buff" layer and 1642 * picked up later by the interrupt routine. for case [2] the 1643 * programmed i/o driver is called with a special flag that says 1644 * return when one iopb is free. for case [3] the process can sleep 1645 * on the iorq free list until some iopbs are available. 1646 */ 1647 1648 1649 int 1650 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1651 { 1652 u_long iopbaddr; 1653 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1654 1655 #ifdef XDC_DEBUG 1656 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", device_xname(&xdcsc->sc_dev), 1657 iorqno, type); 1658 #endif 1659 1660 /* first check and see if controller is busy */ 1661 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1662 #ifdef XDC_DEBUG 1663 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1664 #endif 1665 if (type == XD_SUB_NOQ) 1666 return (XD_ERR_FAIL); /* failed */ 1667 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1668 switch (type) { 1669 case XD_SUB_NORM: 1670 return XD_ERR_AOK; /* success */ 1671 case XD_SUB_WAIT: 1672 while (iorq->iopb->done == 0) { 1673 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1674 } 1675 return (iorq->errnum); 1676 case XD_SUB_POLL: 1677 return (xdc_piodriver(xdcsc, iorqno, 0)); 1678 default: 1679 panic("xdc_submit_iorq adding"); 1680 } 1681 } 1682 #ifdef XDC_DEBUG 1683 { 1684 u_char *rio = (u_char *) iorq->iopb; 1685 int sz = sizeof(struct xd_iopb), lcv; 1686 printf("%s: aio #%d [", 1687 device_xname(&xdcsc->sc_dev), iorq - xdcsc->reqs); 1688 for (lcv = 0; lcv < sz; lcv++) 1689 printf(" %02x", rio[lcv]); 1690 printf("]\n"); 1691 } 1692 #endif /* XDC_DEBUG */ 1693 1694 /* controller not busy, start command */ 1695 iopbaddr = (u_long) iorq->dmaiopb; 1696 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1697 xdcsc->nrun++; 1698 /* command now running, wrap it up */ 1699 switch (type) { 1700 case XD_SUB_NORM: 1701 case XD_SUB_NOQ: 1702 return (XD_ERR_AOK); /* success */ 1703 case XD_SUB_WAIT: 1704 while (iorq->iopb->done == 0) { 1705 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1706 } 1707 return (iorq->errnum); 1708 case XD_SUB_POLL: 1709 return (xdc_piodriver(xdcsc, iorqno, 0)); 1710 default: 1711 panic("xdc_submit_iorq wrap up"); 1712 } 1713 panic("xdc_submit_iorq"); 1714 return 0; /* not reached */ 1715 } 1716 1717 1718 /* 1719 * xdc_piodriver 1720 * 1721 * programmed i/o driver. this function takes over the computer 1722 * and drains off all i/o requests. it returns the status of the iorq 1723 * the caller is interesting in. if freeone is true, then it returns 1724 * when there is a free iorq. 1725 */ 1726 int 1727 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1728 { 1729 int nreset = 0; 1730 int retval = 0; 1731 u_long count; 1732 struct xdc *xdc = xdcsc->xdc; 1733 #ifdef XDC_DEBUG 1734 printf("xdc_piodriver(%s, %d, freeone=%d)\n", device_xname(&xdcsc->sc_dev), 1735 iorqno, freeone); 1736 #endif 1737 1738 while (xdcsc->nwait || xdcsc->nrun) { 1739 #ifdef XDC_DEBUG 1740 printf("xdc_piodriver: wait=%d, run=%d\n", 1741 xdcsc->nwait, xdcsc->nrun); 1742 #endif 1743 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1744 #ifdef XDC_DEBUG 1745 printf("xdc_piodriver: done wait with count = %d\n", count); 1746 #endif 1747 /* we expect some progress soon */ 1748 if (count == 0 && nreset >= 2) { 1749 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1750 #ifdef XDC_DEBUG 1751 printf("xdc_piodriver: timeout\n"); 1752 #endif 1753 return (XD_ERR_FAIL); 1754 } 1755 if (count == 0) { 1756 if (xdc_reset(xdcsc, 0, 1757 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1758 XD_ERR_FAIL, 1759 0) == XD_ERR_FAIL) 1760 return (XD_ERR_FAIL); /* flushes all but POLL 1761 * requests, resets */ 1762 continue; 1763 } 1764 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1765 if (freeone) { 1766 if (xdcsc->nrun < XDC_MAXIOPB) { 1767 #ifdef XDC_DEBUG 1768 printf("xdc_piodriver: done: one free\n"); 1769 #endif 1770 return (XD_ERR_AOK); 1771 } 1772 continue; /* don't xdc_start */ 1773 } 1774 xdc_start(xdcsc, XDC_MAXIOPB); 1775 } 1776 1777 /* get return value */ 1778 1779 retval = xdcsc->reqs[iorqno].errnum; 1780 1781 #ifdef XDC_DEBUG 1782 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1783 xdcsc->reqs[iorqno].errnum, xdc_e2str(xdcsc->reqs[iorqno].errnum)); 1784 #endif 1785 1786 /* now that we've drained everything, start up any bufs that have 1787 * queued */ 1788 1789 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1790 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1791 break; 1792 1793 return (retval); 1794 } 1795 1796 /* 1797 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1798 * we steal iopb[0] for this, but we put it back when we are done. 1799 */ 1800 void 1801 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1802 { 1803 struct xd_iopb tmpiopb; 1804 u_long addr; 1805 int del; 1806 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1807 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1808 xdcsc->iopbase->comm = XDCMD_RST; 1809 xdcsc->iopbase->unit = xdsc->xd_drive; 1810 addr = (u_long) xdcsc->dvmaiopb; 1811 XDC_GO(xdcsc->xdc, addr); /* go! */ 1812 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1813 if (del <= 0 || xdcsc->iopbase->errs) { 1814 printf("%s: off-line: %s\n", device_xname(&xdcsc->sc_dev), 1815 xdc_e2str(xdcsc->iopbase->errnum)); 1816 xdcsc->xdc->xdc_csr = XDC_RESET; 1817 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1818 if (del <= 0) 1819 panic("xdc_reset"); 1820 } else { 1821 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1822 } 1823 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1824 } 1825 1826 1827 /* 1828 * xdc_reset: reset everything: requests are marked as errors except 1829 * a polled request (which is resubmitted) 1830 */ 1831 int 1832 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1833 struct xd_softc *xdsc) 1834 1835 { 1836 int del = 0, lcv, retval = XD_ERR_AOK; 1837 int oldfree = xdcsc->nfree; 1838 1839 /* soft reset hardware */ 1840 1841 if (!quiet) 1842 printf("%s: soft reset\n", device_xname(&xdcsc->sc_dev)); 1843 xdcsc->xdc->xdc_csr = XDC_RESET; 1844 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1845 if (del <= 0) { 1846 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1847 retval = XD_ERR_FAIL; 1848 } 1849 if (xdsc) 1850 xdc_xdreset(xdcsc, xdsc); 1851 1852 /* fix queues based on "blast-mode" */ 1853 1854 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1855 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1856 1857 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1858 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1859 XD_STATE(iorq->mode) != XD_SUB_NORM) 1860 /* is it active? */ 1861 continue; 1862 1863 xdcsc->nrun--; /* it isn't running any more */ 1864 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1865 /* failed */ 1866 iorq->errnum = error; 1867 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1868 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1869 case XD_SUB_NORM: 1870 iorq->buf->b_error = EIO; 1871 iorq->buf->b_resid = 1872 iorq->sectcnt * XDFM_BPS; 1873 1874 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1875 iorq->dmamap->dm_mapsize, 1876 (iorq->buf->b_flags & B_READ) 1877 ? BUS_DMASYNC_POSTREAD 1878 : BUS_DMASYNC_POSTWRITE); 1879 1880 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1881 1882 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1883 (xdcsc->reqs[lcv].buf->b_bcount - 1884 xdcsc->reqs[lcv].buf->b_resid), 1885 (iorq->buf->b_flags & B_READ)); 1886 biodone(iorq->buf); 1887 XDC_FREE(xdcsc, lcv); /* add to free list */ 1888 break; 1889 case XD_SUB_WAIT: 1890 wakeup(iorq); 1891 case XD_SUB_POLL: 1892 xdcsc->ndone++; 1893 iorq->mode = 1894 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1895 break; 1896 } 1897 1898 } else { 1899 1900 /* resubmit, put at front of wait queue */ 1901 XDC_HWAIT(xdcsc, lcv); 1902 } 1903 } 1904 1905 /* 1906 * now, if stuff is waiting, start it. 1907 * since we just reset it should go 1908 */ 1909 xdc_start(xdcsc, XDC_MAXIOPB); 1910 1911 /* ok, we did it */ 1912 if (oldfree == 0 && xdcsc->nfree) 1913 wakeup(&xdcsc->nfree); 1914 1915 #ifdef XDC_DIAG 1916 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1917 if (del != XDC_MAXIOPB) 1918 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1919 device_xname(&xdcsc->sc_dev), del, XDC_MAXIOPB); 1920 else 1921 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1922 printf("%s: diag: lots of done jobs (%d)\n", 1923 device_xname(&xdcsc->sc_dev), xdcsc->ndone); 1924 #endif 1925 printf("RESET DONE\n"); 1926 return (retval); 1927 } 1928 /* 1929 * xdc_start: start all waiting buffers 1930 */ 1931 1932 void 1933 xdc_start(struct xdc_softc *xdcsc, int maxio) 1934 1935 { 1936 int rqno; 1937 while (maxio && xdcsc->nwait && 1938 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1939 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1940 * param */ 1941 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1942 panic("xdc_start"); /* should never happen */ 1943 maxio--; 1944 } 1945 } 1946 /* 1947 * xdc_remove_iorq: remove "done" IOPB's. 1948 */ 1949 1950 int 1951 xdc_remove_iorq(struct xdc_softc *xdcsc) 1952 { 1953 int errnum, rqno, comm, errs; 1954 struct xdc *xdc = xdcsc->xdc; 1955 struct xd_iopb *iopb; 1956 struct xd_iorq *iorq; 1957 struct buf *bp; 1958 1959 if (xdc->xdc_csr & XDC_F_ERROR) { 1960 /* 1961 * FATAL ERROR: should never happen under normal use. This 1962 * error is so bad, you can't even tell which IOPB is bad, so 1963 * we dump them all. 1964 */ 1965 errnum = xdc->xdc_f_err; 1966 aprint_error_dev(&xdcsc->sc_dev, "fatal error 0x%02x: %s\n", 1967 errnum, xdc_e2str(errnum)); 1968 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errnum, 0) != XD_ERR_AOK) { 1969 aprint_error_dev(&xdcsc->sc_dev, "soft reset failed!\n"); 1970 panic("xdc_remove_iorq: controller DEAD"); 1971 } 1972 return (XD_ERR_AOK); 1973 } 1974 1975 /* 1976 * get iopb that is done 1977 * 1978 * hmm... I used to read the address of the done IOPB off the VME 1979 * registers and calculate the rqno directly from that. that worked 1980 * until I started putting a load on the controller. when loaded, i 1981 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1982 * be set, even after DELAY'ing a while! later on the timeout 1983 * routine would detect IOPBs that were marked "running" but their 1984 * "done" bit was set. rather than dealing directly with this 1985 * problem, it is just easier to look at all running IOPB's for the 1986 * done bit. 1987 */ 1988 if (xdc->xdc_csr & XDC_REMIOPB) { 1989 xdc->xdc_csr = XDC_CLRRIO; 1990 } 1991 1992 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1993 iorq = &xdcsc->reqs[rqno]; 1994 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 1995 continue; /* free, or done */ 1996 iopb = &xdcsc->iopbase[rqno]; 1997 if (iopb->done == 0) 1998 continue; /* not done yet */ 1999 2000 #ifdef XDC_DEBUG 2001 { 2002 u_char *rio = (u_char *) iopb; 2003 int sz = sizeof(struct xd_iopb), lcv; 2004 printf("%s: rio #%d [", device_xname(&xdcsc->sc_dev), rqno); 2005 for (lcv = 0; lcv < sz; lcv++) 2006 printf(" %02x", rio[lcv]); 2007 printf("]\n"); 2008 } 2009 #endif /* XDC_DEBUG */ 2010 2011 xdcsc->nrun--; 2012 2013 comm = iopb->comm; 2014 errs = iopb->errs; 2015 2016 if (errs) 2017 iorq->errnum = iopb->errnum; 2018 else 2019 iorq->errnum = 0; 2020 2021 /* handle non-fatal errors */ 2022 2023 if (errs && 2024 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2025 continue; /* AOK: we resubmitted it */ 2026 2027 2028 /* this iorq is now done (hasn't been restarted or anything) */ 2029 2030 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2031 xdc_perror(iorq, iopb, 0); 2032 2033 /* now, if read/write check to make sure we got all the data 2034 * we needed. (this may not be the case if we got an error in 2035 * the middle of a multisector request). */ 2036 2037 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2038 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2039 /* we just successfully processed a bad144 sector 2040 * note: if we are in bad 144 mode, the pointers have 2041 * been advanced already (see above) and are pointing 2042 * at the bad144 sector. to exit bad144 mode, we 2043 * must advance the pointers 1 sector and issue a new 2044 * request if there are still sectors left to process 2045 * 2046 */ 2047 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2048 2049 /* exit b144 mode */ 2050 iorq->mode = iorq->mode & (~XD_MODE_B144); 2051 2052 if (iorq->sectcnt) { /* more to go! */ 2053 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 2054 iopb->errs = iopb->done = 0; 2055 iorq->tries = 0; 2056 iopb->sectcnt = iorq->sectcnt; 2057 iopb->cylno = iorq->blockno / 2058 iorq->xd->sectpercyl; 2059 iopb->headno = 2060 (iorq->blockno / iorq->xd->nhead) % 2061 iorq->xd->nhead; 2062 iopb->sectno = iorq->blockno % XDFM_BPS; 2063 iopb->daddr = (u_long) iorq->dbuf; 2064 XDC_HWAIT(xdcsc, rqno); 2065 xdc_start(xdcsc, 1); /* resubmit */ 2066 continue; 2067 } 2068 } 2069 /* final cleanup, totally done with this request */ 2070 2071 switch (XD_STATE(iorq->mode)) { 2072 case XD_SUB_NORM: 2073 bp = iorq->buf; 2074 if (errs) { 2075 bp->b_error = EIO; 2076 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2077 } else { 2078 bp->b_resid = 0; /* done */ 2079 } 2080 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2081 iorq->dmamap->dm_mapsize, 2082 (bp->b_flags & B_READ) 2083 ? BUS_DMASYNC_POSTREAD 2084 : BUS_DMASYNC_POSTWRITE); 2085 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2086 2087 disk_unbusy(&iorq->xd->sc_dk, 2088 (bp->b_bcount - bp->b_resid), 2089 (bp->b_flags & B_READ)); 2090 XDC_FREE(xdcsc, rqno); 2091 biodone(bp); 2092 break; 2093 case XD_SUB_WAIT: 2094 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2095 xdcsc->ndone++; 2096 wakeup(iorq); 2097 break; 2098 case XD_SUB_POLL: 2099 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2100 xdcsc->ndone++; 2101 break; 2102 } 2103 } 2104 2105 return (XD_ERR_AOK); 2106 } 2107 2108 /* 2109 * xdc_perror: print error. 2110 * - if still_trying is true: we got an error, retried and got a 2111 * different error. in that case lasterror is the old error, 2112 * and errnum is the new one. 2113 * - if still_trying is not true, then if we ever had an error it 2114 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2115 * from that error (otherwise iorq->errnum == iorq->lasterror). 2116 */ 2117 void 2118 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 2119 2120 { 2121 2122 int error = iorq->lasterror; 2123 2124 printf("%s", (iorq->xd) ? device_xname(&iorq->xd->sc_dev) 2125 : device_xname(&iorq->xdc->sc_dev)); 2126 if (iorq->buf) 2127 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2128 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2129 printf("%s %d/%d/%d: ", 2130 (iopb->comm == XDCMD_RD) ? "read" : "write", 2131 iopb->cylno, iopb->headno, iopb->sectno); 2132 printf("%s", xdc_e2str(error)); 2133 2134 if (still_trying) 2135 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errnum)); 2136 else 2137 if (iorq->errnum == 0) 2138 printf(" [recovered in %d tries]", iorq->tries); 2139 2140 printf("\n"); 2141 } 2142 2143 /* 2144 * xdc_error: non-fatal error encountered... recover. 2145 * return AOK if resubmitted, return FAIL if this iopb is done 2146 */ 2147 int 2148 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 2149 int rqno, int comm) 2150 2151 { 2152 int errnum = iorq->errnum; 2153 int erract = errnum & XD_ERA_MASK; 2154 int oldmode, advance; 2155 #ifdef __sparc__ 2156 int i; 2157 #endif 2158 2159 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2160 oldmode = iorq->mode; 2161 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2162 xdcsc->ndone++; 2163 /* make xdc_start ignore us */ 2164 xdc_reset(xdcsc, 1, XD_RSET_NONE, errnum, iorq->xd); 2165 iorq->mode = oldmode; 2166 xdcsc->ndone--; 2167 } 2168 /* check for read/write to a sector in bad144 table if bad: redirect 2169 * request to bad144 area */ 2170 2171 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2172 (iorq->mode & XD_MODE_B144) == 0) { 2173 advance = iorq->sectcnt - iopb->sectcnt; 2174 XDC_ADVANCE(iorq, advance); 2175 #ifdef __sparc__ 2176 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2177 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2178 iorq->blockno % iorq->xd->nsect)) != -1) { 2179 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2180 * redirect */ 2181 iopb->errnum = iopb->done = iopb->errs = 0; 2182 iopb->sectcnt = 1; 2183 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2184 /* second to last acyl */ 2185 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2186 * standard */ 2187 iopb->headno = i / iorq->xd->nhead; 2188 iopb->sectno = i % iorq->xd->nhead; 2189 XDC_HWAIT(xdcsc, rqno); 2190 xdc_start(xdcsc, 1); /* resubmit */ 2191 return (XD_ERR_AOK); /* recovered! */ 2192 } 2193 #endif 2194 } 2195 2196 /* 2197 * it isn't a bad144 sector, must be real error! see if we can retry 2198 * it? 2199 */ 2200 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2201 xdc_perror(iorq, iopb, 1); /* inform of error state 2202 * change */ 2203 iorq->lasterror = errnum; 2204 2205 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2206 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2207 iorq->tries++; 2208 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2209 XDC_HWAIT(xdcsc, rqno); 2210 xdc_start(xdcsc, 1); /* restart */ 2211 return (XD_ERR_AOK); /* recovered! */ 2212 } 2213 2214 /* failed to recover from this error */ 2215 return (XD_ERR_FAIL); 2216 } 2217 2218 /* 2219 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2220 */ 2221 void 2222 xdc_tick(void *arg) 2223 2224 { 2225 struct xdc_softc *xdcsc = arg; 2226 int lcv, s, reset = 0; 2227 #ifdef XDC_DIAG 2228 int nwait, nrun, nfree, ndone, whd = 0; 2229 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2230 s = splbio(); 2231 nwait = xdcsc->nwait; 2232 nrun = xdcsc->nrun; 2233 nfree = xdcsc->nfree; 2234 ndone = xdcsc->ndone; 2235 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2236 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2237 splx(s); 2238 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2239 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2240 device_xname(&xdcsc->sc_dev), nwait, nfree, nrun, ndone, 2241 XDC_MAXIOPB); 2242 memset(mark, 0, sizeof(mark)); 2243 printf("FREE: "); 2244 for (lcv = nfree; lcv > 0; lcv--) { 2245 printf("%d ", fqc[lcv - 1]); 2246 mark[fqc[lcv - 1]] = 1; 2247 } 2248 printf("\nWAIT: "); 2249 lcv = nwait; 2250 while (lcv > 0) { 2251 printf("%d ", wqc[whd]); 2252 mark[wqc[whd]] = 1; 2253 whd = (whd + 1) % XDC_MAXIOPB; 2254 lcv--; 2255 } 2256 printf("\n"); 2257 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2258 if (mark[lcv] == 0) 2259 printf("MARK: running %d: mode %d done %d errs %d errnum 0x%x ttl %d buf %p\n", 2260 lcv, xdcsc->reqs[lcv].mode, 2261 xdcsc->iopbase[lcv].done, 2262 xdcsc->iopbase[lcv].errs, 2263 xdcsc->iopbase[lcv].errnum, 2264 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2265 } 2266 } else 2267 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2268 printf("%s: diag: lots of done jobs (%d)\n", 2269 device_xname(&xdcsc->sc_dev), ndone); 2270 2271 #endif 2272 #ifdef XDC_DEBUG 2273 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2274 device_xname(&xdcsc->sc_dev), 2275 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2276 xdcsc->ndone); 2277 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2278 if (xdcsc->reqs[lcv].mode) 2279 printf("running %d: mode %d done %d errs %d errnum 0x%x\n", 2280 lcv, 2281 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2282 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errnum); 2283 } 2284 #endif 2285 2286 /* reduce ttl for each request if one goes to zero, reset xdc */ 2287 s = splbio(); 2288 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2289 if (xdcsc->reqs[lcv].mode == 0 || 2290 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2291 continue; 2292 xdcsc->reqs[lcv].ttl--; 2293 if (xdcsc->reqs[lcv].ttl == 0) 2294 reset = 1; 2295 } 2296 if (reset) { 2297 printf("%s: watchdog timeout\n", device_xname(&xdcsc->sc_dev)); 2298 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2299 } 2300 splx(s); 2301 2302 /* until next time */ 2303 2304 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2305 } 2306 2307 /* 2308 * xdc_ioctlcmd: this function provides a user level interface to the 2309 * controller via ioctl. this allows "format" programs to be written 2310 * in user code, and is also useful for some debugging. we return 2311 * an error code. called at user priority. 2312 */ 2313 int 2314 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2315 2316 { 2317 int s, rqno, dummy; 2318 char *dvmabuf = NULL, *buf = NULL; 2319 struct xdc_softc *xdcsc; 2320 int rseg, error; 2321 bus_dma_segment_t seg; 2322 2323 /* check sanity of requested command */ 2324 2325 switch (xio->cmd) { 2326 2327 case XDCMD_NOP: /* no op: everything should be zero */ 2328 if (xio->subfn || xio->dptr || xio->dlen || 2329 xio->block || xio->sectcnt) 2330 return (EINVAL); 2331 break; 2332 2333 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2334 case XDCMD_WR: 2335 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2336 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2337 return (EINVAL); 2338 break; 2339 2340 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2341 return (EINVAL); 2342 2343 case XDCMD_WRP: /* write parameters */ 2344 return (EINVAL);/* not useful, except maybe drive 2345 * parameters... but drive parameters should 2346 * go via disklabel changes */ 2347 2348 case XDCMD_RDP: /* read parameters */ 2349 if (xio->subfn != XDFUN_DRV || 2350 xio->dlen || xio->block || xio->dptr) 2351 return (EINVAL); /* allow read drive params to 2352 * get hw_spt */ 2353 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2354 return (0); 2355 break; 2356 2357 case XDCMD_XRD: /* extended read/write */ 2358 case XDCMD_XWR: 2359 2360 switch (xio->subfn) { 2361 2362 case XDFUN_THD:/* track headers */ 2363 if (xio->sectcnt != xd->hw_spt || 2364 (xio->block % xd->nsect) != 0 || 2365 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2366 xio->dptr == NULL) 2367 return (EINVAL); 2368 xio->sectcnt = 0; 2369 break; 2370 2371 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2372 if (xio->cmd == XDCMD_XRD) 2373 return (EINVAL); /* no XDFUN_VFY */ 2374 if (xio->sectcnt || xio->dlen || 2375 (xio->block % xd->nsect) != 0 || xio->dptr) 2376 return (EINVAL); 2377 break; 2378 2379 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2380 return (EINVAL); /* not yet */ 2381 2382 case XDFUN_DM: /* defect map */ 2383 case XDFUN_DMX:/* defect map (alternate location) */ 2384 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2385 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2386 return (EINVAL); 2387 break; 2388 2389 default: 2390 return (EINVAL); 2391 } 2392 break; 2393 2394 case XDCMD_TST: /* diagnostics */ 2395 return (EINVAL); 2396 2397 default: 2398 return (EINVAL);/* ??? */ 2399 } 2400 2401 xdcsc = xd->parent; 2402 2403 /* create DVMA buffer for request if needed */ 2404 if (xio->dlen) { 2405 bus_addr_t busbuf; 2406 2407 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2408 &seg, &rseg, 2409 xio->dlen, (void **)&buf, 2410 &busbuf)) != 0) { 2411 return (error); 2412 } 2413 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2414 2415 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2416 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2417 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2418 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2419 return (error); 2420 } 2421 } 2422 } 2423 2424 /* do it! */ 2425 2426 error = 0; 2427 s = splbio(); 2428 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2429 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2430 if (rqno == XD_ERR_FAIL) { 2431 error = EIO; 2432 goto done; 2433 } 2434 xio->errnum = xdcsc->reqs[rqno].errnum; 2435 xio->tries = xdcsc->reqs[rqno].tries; 2436 XDC_DONE(xdcsc, rqno, dummy); 2437 2438 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2439 error = copyout(buf, xio->dptr, xio->dlen); 2440 2441 done: 2442 splx(s); 2443 if (dvmabuf) { 2444 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2445 xio->dlen, buf); 2446 } 2447 return (error); 2448 } 2449 2450 /* 2451 * xdc_e2str: convert error code number into an error string 2452 */ 2453 const char * 2454 xdc_e2str(int no) 2455 { 2456 switch (no) { 2457 case XD_ERR_FAIL: 2458 return ("Software fatal error"); 2459 case XD_ERR_AOK: 2460 return ("Successful completion"); 2461 case XD_ERR_ICYL: 2462 return ("Illegal cylinder address"); 2463 case XD_ERR_IHD: 2464 return ("Illegal head address"); 2465 case XD_ERR_ISEC: 2466 return ("Illgal sector address"); 2467 case XD_ERR_CZER: 2468 return ("Count zero"); 2469 case XD_ERR_UIMP: 2470 return ("Unimplemented command"); 2471 case XD_ERR_IF1: 2472 return ("Illegal field length 1"); 2473 case XD_ERR_IF2: 2474 return ("Illegal field length 2"); 2475 case XD_ERR_IF3: 2476 return ("Illegal field length 3"); 2477 case XD_ERR_IF4: 2478 return ("Illegal field length 4"); 2479 case XD_ERR_IF5: 2480 return ("Illegal field length 5"); 2481 case XD_ERR_IF6: 2482 return ("Illegal field length 6"); 2483 case XD_ERR_IF7: 2484 return ("Illegal field length 7"); 2485 case XD_ERR_ISG: 2486 return ("Illegal scatter/gather length"); 2487 case XD_ERR_ISPT: 2488 return ("Not enough sectors per track"); 2489 case XD_ERR_ALGN: 2490 return ("Next IOPB address alignment error"); 2491 case XD_ERR_SGAL: 2492 return ("Scatter/gather address alignment error"); 2493 case XD_ERR_SGEC: 2494 return ("Scatter/gather with auto-ECC"); 2495 case XD_ERR_SECC: 2496 return ("Soft ECC corrected"); 2497 case XD_ERR_SIGN: 2498 return ("ECC ignored"); 2499 case XD_ERR_ASEK: 2500 return ("Auto-seek retry recovered"); 2501 case XD_ERR_RTRY: 2502 return ("Soft retry recovered"); 2503 case XD_ERR_HECC: 2504 return ("Hard data ECC"); 2505 case XD_ERR_NHDR: 2506 return ("Header not found"); 2507 case XD_ERR_NRDY: 2508 return ("Drive not ready"); 2509 case XD_ERR_TOUT: 2510 return ("Operation timeout"); 2511 case XD_ERR_VTIM: 2512 return ("VMEDMA timeout"); 2513 case XD_ERR_DSEQ: 2514 return ("Disk sequencer error"); 2515 case XD_ERR_HDEC: 2516 return ("Header ECC error"); 2517 case XD_ERR_RVFY: 2518 return ("Read verify"); 2519 case XD_ERR_VFER: 2520 return ("Fatail VMEDMA error"); 2521 case XD_ERR_VBUS: 2522 return ("VMEbus error"); 2523 case XD_ERR_DFLT: 2524 return ("Drive faulted"); 2525 case XD_ERR_HECY: 2526 return ("Header error/cyliner"); 2527 case XD_ERR_HEHD: 2528 return ("Header error/head"); 2529 case XD_ERR_NOCY: 2530 return ("Drive not on-cylinder"); 2531 case XD_ERR_SEEK: 2532 return ("Seek error"); 2533 case XD_ERR_ILSS: 2534 return ("Illegal sector size"); 2535 case XD_ERR_SEC: 2536 return ("Soft ECC"); 2537 case XD_ERR_WPER: 2538 return ("Write-protect error"); 2539 case XD_ERR_IRAM: 2540 return ("IRAM self test failure"); 2541 case XD_ERR_MT3: 2542 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2543 case XD_ERR_MT4: 2544 return ("Maintenance test 4 failure (header shift reg)"); 2545 case XD_ERR_MT5: 2546 return ("Maintenance test 5 failure (VMEDMA regs)"); 2547 case XD_ERR_MT6: 2548 return ("Maintenance test 6 failure (REGCEL chip)"); 2549 case XD_ERR_MT7: 2550 return ("Maintenance test 7 failure (buffer parity)"); 2551 case XD_ERR_MT8: 2552 return ("Maintenance test 8 failure (disk FIFO)"); 2553 case XD_ERR_IOCK: 2554 return ("IOPB checksum miscompare"); 2555 case XD_ERR_IODM: 2556 return ("IOPB DMA fatal"); 2557 case XD_ERR_IOAL: 2558 return ("IOPB address alignment error"); 2559 case XD_ERR_FIRM: 2560 return ("Firmware error"); 2561 case XD_ERR_MMOD: 2562 return ("Illegal maintenance mode test number"); 2563 case XD_ERR_ACFL: 2564 return ("ACFAIL asserted"); 2565 default: 2566 return ("Unknown error"); 2567 } 2568 } 2569