1/* $NetBSD: xd.c,v 1.99 2023/01/23 21:52:01 andvar 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 1.99 2023/01/23 21:52:01 andvar 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 207extern int pil_to_vme[]; /* from obio.c */ 208 209/* internals */ 210int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 211const char *xdc_e2str(int); 212int xdc_error(struct xdc_softc *, struct xd_iorq *, 213 struct xd_iopb *, int, int); 214int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 215void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 216int xdc_piodriver(struct xdc_softc *, int, int); 217int xdc_remove_iorq(struct xdc_softc *); 218int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 219inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, 220 struct xd_softc *, int, u_long, int, 221 void *, struct buf *); 222void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 223void xdc_start(struct xdc_softc *, int); 224int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 225int xdc_submit_iorq(struct xdc_softc *, int, int); 226void xdc_tick(void *); 227void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 228int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 229 int *, bus_size_t, void **, bus_addr_t *); 230void 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 */ 235int xdcintr(void *); 236 237/* autoconf */ 238int xdcmatch(device_t, cfdata_t, void *); 239void xdcattach(device_t, device_t, void *); 240int xdmatch(device_t, cfdata_t, void *); 241void xdattach(device_t, device_t, void *); 242static int xdc_probe(void *, bus_space_tag_t, bus_space_handle_t); 243 244static void xddummystrat(struct buf *); 245int xdgetdisklabel(struct xd_softc *, void *); 246 247/* XXX - think about this more.. xd_machdep? */ 248void xdc_md_setup(void); 249int XDC_DELAY; 250 251#if defined(__sparc__) 252#include <sparc/sparc/vaddrs.h> 253#include <sparc/sparc/cpuvar.h> 254void 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) 262void xdc_md_setup(void) 263{ 264 XDC_DELAY = XDC_DELAY_SUN3; 265} 266#else 267void xdc_md_setup(void) 268{ 269 XDC_DELAY = 0; 270} 271#endif 272 273/* 274 * cfattach's: device driver interface to autoconfig 275 */ 276 277CFATTACH_DECL_NEW(xdc, sizeof(struct xdc_softc), 278 xdcmatch, xdcattach, NULL, NULL); 279 280CFATTACH_DECL_NEW(xd, sizeof(struct xd_softc), 281 xdmatch, xdattach, NULL, NULL); 282 283extern struct cfdriver xd_cd; 284 285dev_type_open(xdopen); 286dev_type_close(xdclose); 287dev_type_read(xdread); 288dev_type_write(xdwrite); 289dev_type_ioctl(xdioctl); 290dev_type_strategy(xdstrategy); 291dev_type_dump(xddump); 292dev_type_size(xdsize); 293 294const struct bdevsw xd_bdevsw = { 295 .d_open = xdopen, 296 .d_close = xdclose, 297 .d_strategy = xdstrategy, 298 .d_ioctl = xdioctl, 299 .d_dump = xddump, 300 .d_psize = xdsize, 301 .d_discard = nodiscard, 302 .d_flag = D_DISK 303}; 304 305const struct cdevsw xd_cdevsw = { 306 .d_open = xdopen, 307 .d_close = xdclose, 308 .d_read = xdread, 309 .d_write = xdwrite, 310 .d_ioctl = xdioctl, 311 .d_stop = nostop, 312 .d_tty = notty, 313 .d_poll = nopoll, 314 .d_mmap = nommap, 315 .d_kqfilter = nokqfilter, 316 .d_discard = nodiscard, 317 .d_flag = D_DISK 318}; 319 320struct xdc_attach_args { /* this is the "aux" args to xdattach */ 321 int driveno; /* unit number */ 322 int fullmode; /* submit mode */ 323 int booting; /* are we booting or not? */ 324}; 325 326/* 327 * dkdriver 328 */ 329 330struct dkdriver xddkdriver = { 331 .d_strategy = xdstrategy 332}; 333 334/* 335 * start: disk label fix code (XXX) 336 */ 337 338static void *xd_labeldata; 339 340static void 341xddummystrat(struct buf *bp) 342{ 343 if (bp->b_bcount != XDFM_BPS) 344 panic("xddummystrat"); 345 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 346 bp->b_oflags |= BO_DONE; 347 bp->b_cflags &= ~BC_BUSY; 348} 349 350int 351xdgetdisklabel(struct xd_softc *xd, void *b) 352{ 353 const char *err; 354#if defined(__sparc__) || defined(sun3) 355 struct sun_disklabel *sdl; 356#endif 357 358 /* We already have the label data in `b'; setup for dummy strategy */ 359 xd_labeldata = b; 360 361 /* Required parameter for readdisklabel() */ 362 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 363 364 err = readdisklabel(MAKEDISKDEV(0, device_unit(xd->sc_dev), RAW_PART), 365 xddummystrat, 366 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 367 if (err) { 368 aprint_error_dev(xd->sc_dev, "%s\n", err); 369 return(XD_ERR_FAIL); 370 } 371 372#if defined(__sparc__) || defined(sun3) 373 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 374 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 375 if (sdl->sl_magic == SUN_DKMAGIC) { 376 xd->pcyl = sdl->sl_pcylinders; 377 } else 378#endif 379 { 380 printf("%s: WARNING: no `pcyl' in disk label.\n", 381 device_xname(xd->sc_dev)); 382 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 383 xd->sc_dk.dk_label->d_acylinders; 384 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 385 device_xname(xd->sc_dev), xd->pcyl); 386 } 387 388 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 389 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 390 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 391 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 392 xd->sectpercyl = xd->nhead * xd->nsect; 393 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 394 * sun->bsd */ 395 return(XD_ERR_AOK); 396} 397 398/* 399 * end: disk label fix code (XXX) 400 */ 401 402/* 403 * Shorthand for allocating, mapping and loading a DMA buffer 404 */ 405int 406xd_dmamem_alloc(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int *nsegp, bus_size_t len, void * *kvap, bus_addr_t *dmap) 407{ 408 int nseg; 409 int error; 410 411 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 412 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 413 return (error); 414 } 415 416 if ((error = bus_dmamem_map(tag, seg, nseg, 417 len, kvap, 418 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 419 bus_dmamem_free(tag, seg, nseg); 420 return (error); 421 } 422 423 if ((error = bus_dmamap_load(tag, map, 424 *kvap, len, NULL, 425 BUS_DMA_NOWAIT)) != 0) { 426 bus_dmamem_unmap(tag, *kvap, len); 427 bus_dmamem_free(tag, seg, nseg); 428 return (error); 429 } 430 431 *dmap = map->dm_segs[0].ds_addr; 432 *nsegp = nseg; 433 return (0); 434} 435 436void 437xd_dmamem_free(bus_dma_tag_t tag, bus_dmamap_t map, bus_dma_segment_t *seg, int nseg, bus_size_t len, void * kva) 438{ 439 440 bus_dmamap_unload(tag, map); 441 bus_dmamem_unmap(tag, kva, len); 442 bus_dmamem_free(tag, seg, nseg); 443} 444 445 446/* 447 * a u t o c o n f i g f u n c t i o n s 448 */ 449 450/* 451 * xdcmatch: determine if xdc is present or not. we do a 452 * soft reset to detect the xdc. 453 */ 454 455int 456xdc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 457{ 458 struct xdc *xdc = (void *)handle; /* XXX */ 459 int del = 0; 460 461 xdc->xdc_csr = XDC_RESET; 462 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 463 return (del > 0 ? 0 : EIO); 464} 465 466int 467xdcmatch(device_t parent, cfdata_t cf, void *aux) 468{ 469 struct vme_attach_args *va = aux; 470 vme_chipset_tag_t ct = va->va_vct; 471 vme_am_t mod; 472 int error; 473 474 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 475 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 476 return (0); 477 478 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 479 mod, VME_D32, xdc_probe, 0); 480 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 481 482 return (error == 0); 483} 484 485/* 486 * xdcattach: attach controller 487 */ 488void 489xdcattach(device_t parent, device_t self, void *aux) 490{ 491 struct vme_attach_args *va = aux; 492 vme_chipset_tag_t ct = va->va_vct; 493 bus_space_tag_t bt; 494 bus_space_handle_t bh; 495 vme_intr_handle_t ih; 496 vme_am_t mod; 497 struct xdc_softc *xdc = device_private(self); 498 struct xdc_attach_args xa; 499 int lcv, rqno, error; 500 struct xd_iopb_ctrl *ctl; 501 bus_dma_segment_t seg; 502 int rseg; 503 vme_mapresc_t resc; 504 bus_addr_t busaddr; 505 506 xdc->sc_dev = self; 507 xdc_md_setup(); 508 509 /* get addressing and intr level stuff from autoconfig and load it 510 * into our xdc_softc. */ 511 512 xdc->dmatag = va->va_bdt; 513 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 514 515 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 516 panic("xdc: vme alloc"); 517 518 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 519 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 520 panic("xdc: vme_map"); 521 522 xdc->xdc = (struct xdc *) bh; /* XXX */ 523 xdc->ipl = va->ilevel; 524 xdc->vector = va->ivector; 525 526 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 527 xdc->sc_drives[lcv] = NULL; 528 529 /* 530 * allocate and zero buffers 531 * 532 * note: we simplify the code by allocating the max number of iopbs and 533 * iorq's up front. thus, we avoid linked lists and the costs 534 * associated with them in exchange for wasting a little memory. 535 */ 536 537 /* Get DMA handle for misc. transfers */ 538 if ((error = vme_dmamap_create( 539 ct, /* VME chip tag */ 540 MAXPHYS, /* size */ 541 VME_AM_A24, /* address modifier */ 542 VME_D32, /* data size */ 543 0, /* swap */ 544 1, /* nsegments */ 545 MAXPHYS, /* maxsegsz */ 546 0, /* boundary */ 547 BUS_DMA_NOWAIT, 548 &xdc->auxmap)) != 0) { 549 550 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 551 error); 552 return; 553 } 554 555 556 /* Get DMA handle for mapping iorq descriptors */ 557 if ((error = vme_dmamap_create( 558 ct, /* VME chip tag */ 559 XDC_MAXIOPB * sizeof(struct xd_iopb), 560 VME_AM_A24, /* address modifier */ 561 VME_D32, /* data size */ 562 0, /* swap */ 563 1, /* nsegments */ 564 XDC_MAXIOPB * sizeof(struct xd_iopb), 565 0, /* boundary */ 566 BUS_DMA_NOWAIT, 567 &xdc->iopmap)) != 0) { 568 569 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 570 error); 571 return; 572 } 573 574 /* Get DMA buffer for iorq descriptors */ 575 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 576 XDC_MAXIOPB * sizeof(struct xd_iopb), 577 (void **)&xdc->iopbase, 578 &busaddr)) != 0) { 579 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 580 error); 581 return; 582 } 583 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 584 585 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 586 587 xdc->reqs = malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 588 M_DEVBUF, M_WAITOK|M_ZERO); 589 590 /* init free list, iorq to iopb pointers, and non-zero fields in the 591 * iopb which never change. */ 592 593 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 594 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 595 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 596 xdc->freereq[lcv] = lcv; 597 xdc->iopbase[lcv].fixd = 1; /* always the same */ 598 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 599 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 600 601 if ((error = vme_dmamap_create( 602 ct, /* VME chip tag */ 603 MAXPHYS, /* size */ 604 VME_AM_A24, /* address modifier */ 605 VME_D32, /* data size */ 606 0, /* swap */ 607 1, /* nsegments */ 608 MAXPHYS, /* maxsegsz */ 609 0, /* boundary */ 610 BUS_DMA_NOWAIT, 611 &xdc->reqs[lcv].dmamap)) != 0) { 612 613 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 614 error); 615 return; 616 } 617 } 618 xdc->nfree = XDC_MAXIOPB; 619 xdc->nrun = 0; 620 xdc->waithead = xdc->waitend = xdc->nwait = 0; 621 xdc->ndone = 0; 622 623 /* init queue of waiting bufs */ 624 625 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 626 callout_init(&xdc->sc_tick_ch, 0); 627 628 /* 629 * section 7 of the manual tells us how to init the controller: 630 * - read controller parameters (6/0) 631 * - write controller parameters (5/0) 632 */ 633 634 /* read controller parameters and insure we have a 753/7053 */ 635 636 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 637 if (rqno == XD_ERR_FAIL) { 638 printf(": couldn't read controller params\n"); 639 return; /* shouldn't ever happen */ 640 } 641 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 642 if (ctl->ctype != XDCT_753) { 643 if (xdc->reqs[rqno].errnum) 644 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errnum)); 645 printf(": doesn't identify as a 753/7053\n"); 646 XDC_DONE(xdc, rqno, error); 647 return; 648 } 649 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 650 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 651 XDC_DONE(xdc, rqno, error); 652 653 /* now write controller parameters (xdc_cmd sets all params for us) */ 654 655 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 656 XDC_DONE(xdc, rqno, error); 657 if (error) { 658 aprint_error_dev(xdc->sc_dev, "controller config error: %s\n", 659 xdc_e2str(error)); 660 return; 661 } 662 663 /* link in interrupt with higher level software */ 664 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 665 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 666 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 667 device_xname(xdc->sc_dev), "intr"); 668 669 670 /* now we must look for disks using autoconfig */ 671 xa.fullmode = XD_SUB_POLL; 672 xa.booting = 1; 673 674 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 675 (void) config_found(self, (void *) &xa, NULL, CFARGS_NONE); 676 677 /* start the watchdog clock */ 678 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 679 680} 681 682/* 683 * xdmatch: probe for disk. 684 * 685 * note: we almost always say disk is present. this allows us to 686 * spin up and configure a disk after the system is booted (we can 687 * call xdattach!). 688 */ 689int 690xdmatch(device_t parent, cfdata_t cf, void *aux) 691{ 692 struct xdc_attach_args *xa = aux; 693 694 /* looking for autoconf wildcard or exact match */ 695 696 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 697 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 698 return 0; 699 700 return 1; 701 702} 703 704/* 705 * xdattach: attach a disk. this can be called from autoconf and also 706 * from xdopen/xdstrategy. 707 */ 708void 709xdattach(device_t parent, device_t self, void *aux) 710{ 711 struct xd_softc *xd = device_private(self); 712 struct xdc_softc *xdc = device_private(parent); 713 struct xdc_attach_args *xa = aux; 714 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 715 struct xd_iopb_drive *driopb; 716 struct dkbad *dkb; 717 int rseg, error; 718 bus_dma_segment_t seg; 719 bus_addr_t busaddr; 720 void * dmaddr; 721 char * buf; 722 723 xd->sc_dev = self; 724 725 /* 726 * Always re-initialize the disk structure. We want statistics 727 * to start with a clean slate. 728 */ 729 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 730 731 /* if booting, init the xd_softc */ 732 733 if (xa->booting) { 734 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 735 xd->flags = 0; 736 xd->parent = xdc; 737 } 738 xd->xd_drive = xa->driveno; 739 fmode = xa->fullmode; 740 xdc->sc_drives[xa->driveno] = xd; 741 742 /* if not booting, make sure we are the only process in the attach for 743 * this drive. if locked out, sleep on it. */ 744 745 if (!xa->booting) { 746 s = splbio(); 747 while (xd->state == XD_DRIVE_ATTACHING) { 748 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 749 splx(s); 750 return; 751 } 752 } 753 printf("%s at %s", 754 device_xname(xd->sc_dev), device_xname(xd->parent->sc_dev)); 755 } 756 757 /* we now have control */ 758 xd->state = XD_DRIVE_ATTACHING; 759 newstate = XD_DRIVE_UNKNOWN; 760 761 buf = NULL; 762 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 763 XDFM_BPS, 764 (void **)&buf, 765 &busaddr)) != 0) { 766 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 767 error); 768 return; 769 } 770 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 771 772 /* first try and reset the drive */ 773 774 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 775 XDC_DONE(xdc, rqno, error); 776 if (error == XD_ERR_NRDY) { 777 printf(" drive %d: off-line\n", xa->driveno); 778 goto done; 779 } 780 if (error) { 781 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 782 goto done; 783 } 784 printf(" drive %d: ready\n", xa->driveno); 785 786 /* now set format parameters */ 787 788 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 789 XDC_DONE(xdc, rqno, error); 790 if (error) { 791 aprint_error_dev(xd->sc_dev, "write format parameters failed: %s\n", 792 xdc_e2str(error)); 793 goto done; 794 } 795 796 /* get drive parameters */ 797 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 798 if (rqno != XD_ERR_FAIL) { 799 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 800 spt = driopb->sectpertrk; 801 } 802 XDC_DONE(xdc, rqno, error); 803 if (error) { 804 aprint_error_dev(xd->sc_dev, "read drive parameters failed: %s\n", 805 xdc_e2str(error)); 806 goto done; 807 } 808 809 /* 810 * now set drive parameters (to semi-bogus values) so we can read the 811 * disk label. 812 */ 813 xd->pcyl = xd->ncyl = 1; 814 xd->acyl = 0; 815 xd->nhead = 1; 816 xd->nsect = 1; 817 xd->sectpercyl = 1; 818 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 819 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 820 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 821 XDC_DONE(xdc, rqno, error); 822 if (error) { 823 aprint_error_dev(xd->sc_dev, "write drive parameters failed: %s\n", 824 xdc_e2str(error)); 825 goto done; 826 } 827 828 /* read disk label */ 829 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 830 XDC_DONE(xdc, rqno, error); 831 if (error) { 832 aprint_error_dev(xd->sc_dev, "reading disk label failed: %s\n", 833 xdc_e2str(error)); 834 goto done; 835 } 836 newstate = XD_DRIVE_NOLABEL; 837 838 xd->hw_spt = spt; 839 /* Attach the disk: must be before getdisklabel to malloc label */ 840 disk_init(&xd->sc_dk, device_xname(xd->sc_dev), &xddkdriver); 841 disk_attach(&xd->sc_dk); 842 843 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 844 goto done; 845 846 /* inform the user of what is up */ 847 printf("%s: <%s>, pcyl %d, hw_spt %d\n", device_xname(xd->sc_dev), 848 buf, xd->pcyl, spt); 849 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 850 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 851 device_xname(xd->sc_dev), mb, xd->ncyl, xd->nhead, xd->nsect, 852 XDFM_BPS); 853 854 /* now set the real drive parameters! */ 855 856 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 857 XDC_DONE(xdc, rqno, error); 858 if (error) { 859 aprint_error_dev(xd->sc_dev, "write real drive parameters failed: %s\n", 860 xdc_e2str(error)); 861 goto done; 862 } 863 newstate = XD_DRIVE_ONLINE; 864 865 /* 866 * read bad144 table. this table resides on the first sector of the 867 * last track of the disk (i.e. second cyl of "acyl" area). 868 */ 869 870 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 871 (xd->nhead - 1) * xd->nsect; /* last head */ 872 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 873 XDC_DONE(xdc, rqno, error); 874 if (error) { 875 aprint_error_dev(xd->sc_dev, "reading bad144 failed: %s\n", 876 xdc_e2str(error)); 877 goto done; 878 } 879 880 /* check dkbad for sanity */ 881 dkb = (struct dkbad *) buf; 882 for (lcv = 0; lcv < 126; lcv++) { 883 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 884 dkb->bt_bad[lcv].bt_cyl == 0) && 885 dkb->bt_bad[lcv].bt_trksec == 0xffff) 886 continue; /* blank */ 887 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 888 break; 889 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 890 break; 891 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 892 break; 893 } 894 if (lcv != 126) { 895 aprint_error_dev(xd->sc_dev, "warning: invalid bad144 sector!\n"); 896 } else { 897 memcpy(&xd->dkb, buf, XDFM_BPS); 898 } 899 900done: 901 if (buf != NULL) { 902 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 903 &seg, rseg, XDFM_BPS, buf); 904 } 905 906 xd->state = newstate; 907 if (!xa->booting) { 908 wakeup(&xd->state); 909 splx(s); 910 } 911} 912 913/* 914 * end of autoconfig functions 915 */ 916 917/* 918 * { b , c } d e v s w f u n c t i o n s 919 */ 920 921/* 922 * xdclose: close device 923 */ 924int 925xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 926{ 927 struct xd_softc *xd = device_lookup_private(&xd_cd, DISKUNIT(dev)); 928 int part = DISKPART(dev); 929 930 /* clear mask bits */ 931 932 switch (fmt) { 933 case S_IFCHR: 934 xd->sc_dk.dk_copenmask &= ~(1 << part); 935 break; 936 case S_IFBLK: 937 xd->sc_dk.dk_bopenmask &= ~(1 << part); 938 break; 939 } 940 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 941 942 return 0; 943} 944 945/* 946 * xddump: crash dump system 947 */ 948int 949xddump(dev_t dev, daddr_t blkno, void *va, size_t size) 950{ 951 int unit, part; 952 struct xd_softc *xd; 953 954 unit = DISKUNIT(dev); 955 part = DISKPART(dev); 956 957 xd = device_lookup_private(&xd_cd, unit); 958 if (!xd) 959 return ENXIO; 960 961 printf("%s%c: crash dump not supported (yet)\n", device_xname(xd->sc_dev), 962 'a' + part); 963 964 return ENXIO; 965 966 /* outline: globals: "dumplo" == sector number of partition to start 967 * dump at (convert to physical sector with partition table) 968 * "dumpsize" == size of dump in clicks "physmem" == size of physical 969 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 970 * physmem) 971 * 972 * dump a copy of physical memory to the dump device starting at sector 973 * "dumplo" in the swap partition (make sure > 0). map in pages as 974 * we go. use polled I/O. 975 * 976 * XXX how to handle NON_CONTIG? */ 977 978} 979 980static enum kauth_device_req 981xd_getkauthreq(u_char cmd) 982{ 983 enum kauth_device_req req; 984 985 switch (cmd) { 986 case XDCMD_WR: 987 case XDCMD_XWR: 988 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 989 break; 990 991 case XDCMD_RD: 992 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 993 break; 994 995 case XDCMD_RDP: 996 case XDCMD_XRD: 997 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 998 break; 999 1000 case XDCMD_WRP: 1001 case XDCMD_RST: 1002 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 1003 break; 1004 1005 case XDCMD_NOP: 1006 case XDCMD_SK: 1007 case XDCMD_TST: 1008 default: 1009 req = 0; 1010 break; 1011 } 1012 1013 return (req); 1014} 1015 1016/* 1017 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1018 */ 1019int 1020xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 1021 1022{ 1023 struct xd_softc *xd; 1024 struct xd_iocmd *xio; 1025 int error, s, unit; 1026#ifdef __HAVE_OLD_DISKLABEL 1027 struct disklabel newlabel; 1028#endif 1029 struct disklabel *lp; 1030 1031 unit = DISKUNIT(dev); 1032 1033 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1034 return (ENXIO); 1035 1036 error = disk_ioctl(&xd->sc_dk, dev, command, addr, flag, l); 1037 if (error != EPASSTHROUGH) 1038 return error; 1039 1040 /* switch on ioctl type */ 1041 1042 switch (command) { 1043 case DIOCSBAD: /* set bad144 info */ 1044 if ((flag & FWRITE) == 0) 1045 return EBADF; 1046 s = splbio(); 1047 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 1048 splx(s); 1049 return 0; 1050 1051 case DIOCSDINFO: /* set disk label */ 1052#ifdef __HAVE_OLD_DISKLABEL 1053 case ODIOCSDINFO: 1054 if (command == ODIOCSDINFO) { 1055 memset(&newlabel, 0, sizeof newlabel); 1056 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1057 lp = &newlabel; 1058 } else 1059#endif 1060 lp = (struct disklabel *)addr; 1061 1062 if ((flag & FWRITE) == 0) 1063 return EBADF; 1064 error = setdisklabel(xd->sc_dk.dk_label, 1065 lp, /* xd->sc_dk.dk_openmask : */ 0, 1066 xd->sc_dk.dk_cpulabel); 1067 if (error == 0) { 1068 if (xd->state == XD_DRIVE_NOLABEL) 1069 xd->state = XD_DRIVE_ONLINE; 1070 } 1071 return error; 1072 1073 case DIOCWLABEL: /* change write status of disk label */ 1074 if ((flag & FWRITE) == 0) 1075 return EBADF; 1076 if (*(int *) addr) 1077 xd->flags |= XD_WLABEL; 1078 else 1079 xd->flags &= ~XD_WLABEL; 1080 return 0; 1081 1082 case DIOCWDINFO: /* write disk label */ 1083#ifdef __HAVE_OLD_DISKLABEL 1084 case ODIOCWDINFO: 1085 if (command == ODIOCWDINFO) { 1086 memset(&newlabel, 0, sizeof newlabel); 1087 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1088 lp = &newlabel; 1089 } else 1090#endif 1091 lp = (struct disklabel *)addr; 1092 1093 if ((flag & FWRITE) == 0) 1094 return EBADF; 1095 error = setdisklabel(xd->sc_dk.dk_label, 1096 lp, /* xd->sc_dk.dk_openmask : */ 0, 1097 xd->sc_dk.dk_cpulabel); 1098 if (error == 0) { 1099 if (xd->state == XD_DRIVE_NOLABEL) 1100 xd->state = XD_DRIVE_ONLINE; 1101 1102 /* Simulate opening partition 0 so write succeeds. */ 1103 xd->sc_dk.dk_openmask |= (1 << 0); 1104 error = writedisklabel(MAKEDISKDEV(major(dev), 1105 DISKUNIT(dev), RAW_PART), 1106 xdstrategy, xd->sc_dk.dk_label, 1107 xd->sc_dk.dk_cpulabel); 1108 xd->sc_dk.dk_openmask = 1109 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1110 } 1111 return error; 1112 1113 case DIOSXDCMD: { 1114 enum kauth_device_req req; 1115 1116 xio = (struct xd_iocmd *) addr; 1117 req = xd_getkauthreq(xio->cmd); 1118 if ((error = kauth_authorize_device_passthru(l->l_cred, 1119 dev, req, xio)) != 0) 1120 return (error); 1121 return (xdc_ioctlcmd(xd, dev, xio)); 1122 } 1123 1124 default: 1125 return ENOTTY; 1126 } 1127} 1128/* 1129 * xdopen: open drive 1130 */ 1131 1132int 1133xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1134{ 1135 int unit, part; 1136 struct xd_softc *xd; 1137 struct xdc_attach_args xa; 1138 1139 /* first, could it be a valid target? */ 1140 1141 unit = DISKUNIT(dev); 1142 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1143 return (ENXIO); 1144 part = DISKPART(dev); 1145 1146 /* do we need to attach the drive? */ 1147 1148 if (xd->state == XD_DRIVE_UNKNOWN) { 1149 xa.driveno = xd->xd_drive; 1150 xa.fullmode = XD_SUB_WAIT; 1151 xa.booting = 0; 1152 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1153 if (xd->state == XD_DRIVE_UNKNOWN) { 1154 return (EIO); 1155 } 1156 } 1157 /* check for partition */ 1158 1159 if (part != RAW_PART && 1160 (part >= xd->sc_dk.dk_label->d_npartitions || 1161 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1162 return (ENXIO); 1163 } 1164 /* set open masks */ 1165 1166 switch (fmt) { 1167 case S_IFCHR: 1168 xd->sc_dk.dk_copenmask |= (1 << part); 1169 break; 1170 case S_IFBLK: 1171 xd->sc_dk.dk_bopenmask |= (1 << part); 1172 break; 1173 } 1174 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1175 1176 return 0; 1177} 1178 1179int 1180xdread(dev_t dev, struct uio *uio, int flags) 1181{ 1182 1183 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1184} 1185 1186int 1187xdwrite(dev_t dev, struct uio *uio, int flags) 1188{ 1189 1190 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1191} 1192 1193 1194/* 1195 * xdsize: return size of a partition for a dump 1196 */ 1197 1198int 1199xdsize(dev_t dev) 1200{ 1201 struct xd_softc *xdsc; 1202 int unit, part, size, omask; 1203 1204 /* valid unit? */ 1205 unit = DISKUNIT(dev); 1206 if ((xdsc = device_lookup_private(&xd_cd, unit)) == NULL) 1207 return (-1); 1208 1209 part = DISKPART(dev); 1210 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1211 1212 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1213 return (-1); 1214 1215 /* do it */ 1216 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1217 size = -1; /* only give valid size for swap partitions */ 1218 else 1219 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1220 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1221 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1222 return (-1); 1223 return (size); 1224} 1225/* 1226 * xdstrategy: buffering system interface to xd. 1227 */ 1228 1229void 1230xdstrategy(struct buf *bp) 1231{ 1232 struct xd_softc *xd; 1233 struct xdc_softc *parent; 1234 int s, unit; 1235 struct xdc_attach_args xa; 1236 1237 unit = DISKUNIT(bp->b_dev); 1238 1239 /* check for live device */ 1240 1241 if (!(xd = device_lookup_private(&xd_cd, unit)) || 1242 bp->b_blkno < 0 || 1243 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1244 bp->b_error = EINVAL; 1245 goto done; 1246 } 1247 /* do we need to attach the drive? */ 1248 1249 if (xd->state == XD_DRIVE_UNKNOWN) { 1250 xa.driveno = xd->xd_drive; 1251 xa.fullmode = XD_SUB_WAIT; 1252 xa.booting = 0; 1253 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1254 if (xd->state == XD_DRIVE_UNKNOWN) { 1255 bp->b_error = EIO; 1256 goto done; 1257 } 1258 } 1259 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1260 /* no I/O to unlabeled disks, unless raw partition */ 1261 bp->b_error = EIO; 1262 goto done; 1263 } 1264 /* short circuit zero length request */ 1265 1266 if (bp->b_bcount == 0) 1267 goto done; 1268 1269 /* check bounds with label (disksubr.c). Determine the size of the 1270 * transfer, and make sure it is within the boundaries of the 1271 * partition. Adjust transfer if needed, and signal errors or early 1272 * completion. */ 1273 1274 if (bounds_check_with_label(&xd->sc_dk, bp, 1275 (xd->flags & XD_WLABEL) != 0) <= 0) 1276 goto done; 1277 1278 /* 1279 * now we know we have a valid buf structure that we need to do I/O 1280 * on. 1281 * 1282 * note that we don't disksort because the controller has a sorting 1283 * algorithm built into the hardware. 1284 */ 1285 1286 s = splbio(); /* protect the queues */ 1287 1288 /* first, give jobs in front of us a chance */ 1289 parent = xd->parent; 1290 while (parent->nfree > 0 && bufq_peek(parent->sc_wq) != NULL) 1291 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1292 break; 1293 1294 /* if there are no free iorq's, then we just queue and return. the 1295 * buffs will get picked up later by xdcintr(). 1296 */ 1297 1298 if (parent->nfree == 0) { 1299 bufq_put(parent->sc_wq, bp); 1300 splx(s); 1301 return; 1302 } 1303 1304 /* now we have free iopb's and we are at splbio... start 'em up */ 1305 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1306 return; 1307 } 1308 1309 /* done! */ 1310 1311 splx(s); 1312 return; 1313 1314done: /* tells upper layers we are done with this 1315 * buf */ 1316 bp->b_resid = bp->b_bcount; 1317 biodone(bp); 1318} 1319/* 1320 * end of {b,c}devsw functions 1321 */ 1322 1323/* 1324 * i n t e r r u p t f u n c t i o n 1325 * 1326 * xdcintr: hardware interrupt. 1327 */ 1328int 1329xdcintr(void *v) 1330{ 1331 struct xdc_softc *xdcsc = v; 1332 1333 /* kick the event counter */ 1334 1335 xdcsc->sc_intrcnt.ev_count++; 1336 1337 /* remove as many done IOPBs as possible */ 1338 1339 xdc_remove_iorq(xdcsc); 1340 1341 /* start any iorq's already waiting */ 1342 1343 xdc_start(xdcsc, XDC_MAXIOPB); 1344 1345 /* fill up any remaining iorq's with queue'd buffers */ 1346 1347 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1348 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1349 break; 1350 1351 return (1); 1352} 1353/* 1354 * end of interrupt function 1355 */ 1356 1357/* 1358 * i n t e r n a l f u n c t i o n s 1359 */ 1360 1361/* 1362 * xdc_rqinit: fill out the fields of an I/O request 1363 */ 1364 1365inline void 1366xdc_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) 1367{ 1368 rq->xdc = xdc; 1369 rq->xd = xd; 1370 rq->ttl = XDC_MAXTTL + 10; 1371 rq->mode = md; 1372 rq->tries = rq->errnum = rq->lasterror = 0; 1373 rq->blockno = blk; 1374 rq->sectcnt = cnt; 1375 rq->dbuf = db; 1376 rq->buf = bp; 1377} 1378/* 1379 * xdc_rqtopb: load up an IOPB based on an iorq 1380 */ 1381 1382void 1383xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1384{ 1385 u_long block, dp; 1386 1387 /* standard stuff */ 1388 1389 iopb->errs = iopb->done = 0; 1390 iopb->comm = cmd; 1391 iopb->errnum = iopb->status = 0; 1392 iopb->subfun = subfun; 1393 if (iorq->xd) 1394 iopb->unit = iorq->xd->xd_drive; 1395 else 1396 iopb->unit = 0; 1397 1398 /* check for alternate IOPB format */ 1399 1400 if (cmd == XDCMD_WRP) { 1401 switch (subfun) { 1402 case XDFUN_CTL:{ 1403 struct xd_iopb_ctrl *ctrl = 1404 (struct xd_iopb_ctrl *) iopb; 1405 iopb->lll = 0; 1406 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1407 ? 0 1408 : iorq->xdc->ipl; 1409 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1410 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1411 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1412 XDPC_RBC | XDPC_ECC2; 1413 ctrl->throttle = XDC_THROTTLE; 1414 ctrl->delay = XDC_DELAY; 1415 break; 1416 } 1417 case XDFUN_DRV:{ 1418 struct xd_iopb_drive *drv = 1419 (struct xd_iopb_drive *)iopb; 1420 /* we assume that the disk label has the right 1421 * info */ 1422 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1423 drv->dparam_ipl = (XDC_DPARAM << 3); 1424 else 1425 drv->dparam_ipl = (XDC_DPARAM << 3) | 1426 iorq->xdc->ipl; 1427 drv->maxsect = iorq->xd->nsect - 1; 1428 drv->maxsector = drv->maxsect; 1429 /* note: maxsector != maxsect only if you are 1430 * doing cyl sparing */ 1431 drv->headoff = 0; 1432 drv->maxcyl = iorq->xd->pcyl - 1; 1433 drv->maxhead = iorq->xd->nhead - 1; 1434 break; 1435 } 1436 case XDFUN_FMT:{ 1437 struct xd_iopb_format *form = 1438 (struct xd_iopb_format *) iopb; 1439 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1440 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1441 else 1442 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1443 iorq->xdc->ipl; 1444 form->field1 = XDFM_FIELD1; 1445 form->field2 = XDFM_FIELD2; 1446 form->field3 = XDFM_FIELD3; 1447 form->field4 = XDFM_FIELD4; 1448 form->bytespersec = XDFM_BPS; 1449 form->field6 = XDFM_FIELD6; 1450 form->field7 = XDFM_FIELD7; 1451 break; 1452 } 1453 } 1454 } else { 1455 1456 /* normal IOPB case (harmless to RDP command) */ 1457 1458 iopb->lll = 0; 1459 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1460 ? 0 1461 : iorq->xdc->ipl; 1462 iopb->sectcnt = iorq->sectcnt; 1463 block = iorq->blockno; 1464 if (iorq->xd == NULL || block == 0) { 1465 iopb->sectno = iopb->headno = iopb->cylno = 0; 1466 } else { 1467 iopb->sectno = block % iorq->xd->nsect; 1468 block = block / iorq->xd->nsect; 1469 iopb->headno = block % iorq->xd->nhead; 1470 block = block / iorq->xd->nhead; 1471 iopb->cylno = block; 1472 } 1473 dp = (u_long) iorq->dbuf; 1474 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1475 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1476 ? XDC_ADDRMOD32 1477 : XDC_ADDRMOD; 1478 } 1479} 1480 1481/* 1482 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1483 * If you've already got an IORQ, you can call submit directly (currently 1484 * there is no need to do this). NORM requests are handled separately. 1485 */ 1486int 1487xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1488 int scnt, char *dptr, int fullmode) 1489{ 1490 int rqno, submode = XD_STATE(fullmode), retry; 1491 struct xd_iorq *iorq; 1492 struct xd_iopb *iopb; 1493 1494 /* get iorq/iopb */ 1495 switch (submode) { 1496 case XD_SUB_POLL: 1497 while (xdcsc->nfree == 0) { 1498 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1499 return (XD_ERR_FAIL); 1500 } 1501 break; 1502 case XD_SUB_WAIT: 1503 retry = 1; 1504 while (retry) { 1505 while (xdcsc->nfree == 0) { 1506 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1507 return (XD_ERR_FAIL); 1508 } 1509 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1510 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1511 return (XD_ERR_FAIL); 1512 } 1513 if (xdcsc->nfree) 1514 retry = 0; /* got it */ 1515 } 1516 break; 1517 default: 1518 return (XD_ERR_FAIL); /* illegal */ 1519 } 1520 if (xdcsc->nfree == 0) 1521 panic("xdcmd nfree"); 1522 rqno = XDC_RQALLOC(xdcsc); 1523 iorq = &xdcsc->reqs[rqno]; 1524 iopb = iorq->iopb; 1525 1526 1527 /* init iorq/iopb */ 1528 1529 xdc_rqinit(iorq, xdcsc, 1530 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1531 fullmode, block, scnt, dptr, NULL); 1532 1533 /* load IOPB from iorq */ 1534 1535 xdc_rqtopb(iorq, iopb, cmd, subfn); 1536 1537 /* submit it for processing */ 1538 1539 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1540 1541 return (rqno); 1542} 1543/* 1544 * xdc_startbuf 1545 * start a buffer running, assumes nfree > 0 1546 */ 1547 1548int 1549xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1550{ 1551 int rqno, partno; 1552 struct xd_iorq *iorq; 1553 struct xd_iopb *iopb; 1554 u_long block; 1555/* void *dbuf;*/ 1556 int error; 1557 1558 if (!xdcsc->nfree) 1559 panic("xdc_startbuf free"); 1560 rqno = XDC_RQALLOC(xdcsc); 1561 iorq = &xdcsc->reqs[rqno]; 1562 iopb = iorq->iopb; 1563 1564 /* get buf */ 1565 1566 if (bp == NULL) { 1567 bp = bufq_get(xdcsc->sc_wq); 1568 if (bp == NULL) 1569 panic("xdc_startbuf bp"); 1570 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1571 } 1572 partno = DISKPART(bp->b_dev); 1573#ifdef XDC_DEBUG 1574 printf("xdc_startbuf: %s%c: %s block %d\n", device_xname(xdsc->sc_dev), 1575 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1576 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1577 bp->b_bcount, bp->b_data); 1578#endif 1579 1580 /* 1581 * load request. we have to calculate the correct block number based 1582 * on partition info. 1583 * 1584 * note that iorq points to the buffer as mapped into DVMA space, 1585 * where as the bp->b_data points to its non-DVMA mapping. 1586 */ 1587 1588 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1589 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1590 1591 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1592 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1593 if (error != 0) { 1594 aprint_error_dev(xdcsc->sc_dev, "warning: cannot load DMA map\n"); 1595 XDC_FREE(xdcsc, rqno); 1596 bufq_put(xdcsc->sc_wq, bp); 1597 return (XD_ERR_FAIL); /* XXX: need some sort of 1598 * call-back scheme here? */ 1599 } 1600 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1601 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1602 ? BUS_DMASYNC_PREREAD 1603 : BUS_DMASYNC_PREWRITE); 1604 1605 /* init iorq and load iopb from it */ 1606 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1607 bp->b_bcount / XDFM_BPS, 1608 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1609 bp); 1610 1611 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1612 1613 /* Instrumentation. */ 1614 disk_busy(&xdsc->sc_dk); 1615 1616 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1617 1618 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1619 return (XD_ERR_AOK); 1620} 1621 1622 1623/* 1624 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1625 * if ok. if it fail returns an error code. type is XD_SUB_*. 1626 * 1627 * note: caller frees iorq in all cases except NORM 1628 * 1629 * return value: 1630 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1631 * WAIT: XD_AOK (success), <error-code> (failed) 1632 * POLL: <same as WAIT> 1633 * NOQ : <same as NORM> 1634 * 1635 * there are three sources for i/o requests: 1636 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1637 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1638 * [3] open/ioctl: these are I/O requests done in the context of a process, 1639 * and the process should block until they are done. 1640 * 1641 * software state is stored in the iorq structure. each iorq has an 1642 * iopb structure. the hardware understands the iopb structure. 1643 * every command must go through an iopb. a 7053 can only handle 1644 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1645 * DVMA space at boot up time. what happens if we run out of iopb's? 1646 * for i/o type [1], the buffers are queued at the "buff" layer and 1647 * picked up later by the interrupt routine. for case [2] the 1648 * programmed i/o driver is called with a special flag that says 1649 * return when one iopb is free. for case [3] the process can sleep 1650 * on the iorq free list until some iopbs are available. 1651 */ 1652 1653 1654int 1655xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1656{ 1657 u_long iopbaddr; 1658 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1659 1660#ifdef XDC_DEBUG 1661 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", device_xname(xdcsc->sc_dev), 1662 iorqno, type); 1663#endif 1664 1665 /* first check and see if controller is busy */ 1666 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1667#ifdef XDC_DEBUG 1668 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1669#endif 1670 if (type == XD_SUB_NOQ) 1671 return (XD_ERR_FAIL); /* failed */ 1672 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1673 switch (type) { 1674 case XD_SUB_NORM: 1675 return XD_ERR_AOK; /* success */ 1676 case XD_SUB_WAIT: 1677 while (iorq->iopb->done == 0) { 1678 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1679 } 1680 return (iorq->errnum); 1681 case XD_SUB_POLL: 1682 return (xdc_piodriver(xdcsc, iorqno, 0)); 1683 default: 1684 panic("xdc_submit_iorq adding"); 1685 } 1686 } 1687#ifdef XDC_DEBUG 1688 { 1689 u_char *rio = (u_char *) iorq->iopb; 1690 int sz = sizeof(struct xd_iopb), lcv; 1691 printf("%s: aio #%d [", 1692 device_xname(xdcsc->sc_dev), iorq - xdcsc->reqs); 1693 for (lcv = 0; lcv < sz; lcv++) 1694 printf(" %02x", rio[lcv]); 1695 printf("]\n"); 1696 } 1697#endif /* XDC_DEBUG */ 1698 1699 /* controller not busy, start command */ 1700 iopbaddr = (u_long) iorq->dmaiopb; 1701 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1702 xdcsc->nrun++; 1703 /* command now running, wrap it up */ 1704 switch (type) { 1705 case XD_SUB_NORM: 1706 case XD_SUB_NOQ: 1707 return (XD_ERR_AOK); /* success */ 1708 case XD_SUB_WAIT: 1709 while (iorq->iopb->done == 0) { 1710 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1711 } 1712 return (iorq->errnum); 1713 case XD_SUB_POLL: 1714 return (xdc_piodriver(xdcsc, iorqno, 0)); 1715 default: 1716 panic("xdc_submit_iorq wrap up"); 1717 } 1718 panic("xdc_submit_iorq"); 1719 return 0; /* not reached */ 1720} 1721 1722 1723/* 1724 * xdc_piodriver 1725 * 1726 * programmed i/o driver. this function takes over the computer 1727 * and drains off all i/o requests. it returns the status of the iorq 1728 * the caller is interesting in. if freeone is true, then it returns 1729 * when there is a free iorq. 1730 */ 1731int 1732xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1733{ 1734 int nreset = 0; 1735 int retval = 0; 1736 u_long count; 1737 struct xdc *xdc = xdcsc->xdc; 1738#ifdef XDC_DEBUG 1739 printf("xdc_piodriver(%s, %d, freeone=%d)\n", device_xname(xdcsc->sc_dev), 1740 iorqno, freeone); 1741#endif 1742 1743 while (xdcsc->nwait || xdcsc->nrun) { 1744#ifdef XDC_DEBUG 1745 printf("xdc_piodriver: wait=%d, run=%d\n", 1746 xdcsc->nwait, xdcsc->nrun); 1747#endif 1748 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1749#ifdef XDC_DEBUG 1750 printf("xdc_piodriver: done wait with count = %d\n", count); 1751#endif 1752 /* we expect some progress soon */ 1753 if (count == 0 && nreset >= 2) { 1754 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1755#ifdef XDC_DEBUG 1756 printf("xdc_piodriver: timeout\n"); 1757#endif 1758 return (XD_ERR_FAIL); 1759 } 1760 if (count == 0) { 1761 if (xdc_reset(xdcsc, 0, 1762 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1763 XD_ERR_FAIL, 1764 0) == XD_ERR_FAIL) 1765 return (XD_ERR_FAIL); /* flushes all but POLL 1766 * requests, resets */ 1767 continue; 1768 } 1769 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1770 if (freeone) { 1771 if (xdcsc->nrun < XDC_MAXIOPB) { 1772#ifdef XDC_DEBUG 1773 printf("xdc_piodriver: done: one free\n"); 1774#endif 1775 return (XD_ERR_AOK); 1776 } 1777 continue; /* don't xdc_start */ 1778 } 1779 xdc_start(xdcsc, XDC_MAXIOPB); 1780 } 1781 1782 /* get return value */ 1783 1784 retval = xdcsc->reqs[iorqno].errnum; 1785 1786#ifdef XDC_DEBUG 1787 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1788 xdcsc->reqs[iorqno].errnum, xdc_e2str(xdcsc->reqs[iorqno].errnum)); 1789#endif 1790 1791 /* now that we've drained everything, start up any bufs that have 1792 * queued */ 1793 1794 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1795 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1796 break; 1797 1798 return (retval); 1799} 1800 1801/* 1802 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1803 * we steal iopb[0] for this, but we put it back when we are done. 1804 */ 1805void 1806xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1807{ 1808 struct xd_iopb tmpiopb; 1809 u_long addr; 1810 int del; 1811 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1812 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1813 xdcsc->iopbase->comm = XDCMD_RST; 1814 xdcsc->iopbase->unit = xdsc->xd_drive; 1815 addr = (u_long) xdcsc->dvmaiopb; 1816 XDC_GO(xdcsc->xdc, addr); /* go! */ 1817 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1818 if (del <= 0 || xdcsc->iopbase->errs) { 1819 printf("%s: off-line: %s\n", device_xname(xdcsc->sc_dev), 1820 xdc_e2str(xdcsc->iopbase->errnum)); 1821 xdcsc->xdc->xdc_csr = XDC_RESET; 1822 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1823 if (del <= 0) 1824 panic("xdc_reset"); 1825 } else { 1826 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1827 } 1828 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1829} 1830 1831 1832/* 1833 * xdc_reset: reset everything: requests are marked as errors except 1834 * a polled request (which is resubmitted) 1835 */ 1836int 1837xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1838 struct xd_softc *xdsc) 1839 1840{ 1841 int del = 0, lcv, retval = XD_ERR_AOK; 1842 int oldfree = xdcsc->nfree; 1843 1844 /* soft reset hardware */ 1845 1846 if (!quiet) 1847 printf("%s: soft reset\n", device_xname(xdcsc->sc_dev)); 1848 xdcsc->xdc->xdc_csr = XDC_RESET; 1849 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1850 if (del <= 0) { 1851 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1852 retval = XD_ERR_FAIL; 1853 } 1854 if (xdsc) 1855 xdc_xdreset(xdcsc, xdsc); 1856 1857 /* fix queues based on "blast-mode" */ 1858 1859 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1860 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1861 1862 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1863 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1864 XD_STATE(iorq->mode) != XD_SUB_NORM) 1865 /* is it active? */ 1866 continue; 1867 1868 xdcsc->nrun--; /* it isn't running any more */ 1869 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1870 /* failed */ 1871 iorq->errnum = error; 1872 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1873 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1874 case XD_SUB_NORM: 1875 iorq->buf->b_error = EIO; 1876 iorq->buf->b_resid = 1877 iorq->sectcnt * XDFM_BPS; 1878 1879 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1880 iorq->dmamap->dm_mapsize, 1881 (iorq->buf->b_flags & B_READ) 1882 ? BUS_DMASYNC_POSTREAD 1883 : BUS_DMASYNC_POSTWRITE); 1884 1885 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1886 1887 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1888 (xdcsc->reqs[lcv].buf->b_bcount - 1889 xdcsc->reqs[lcv].buf->b_resid), 1890 (iorq->buf->b_flags & B_READ)); 1891 biodone(iorq->buf); 1892 XDC_FREE(xdcsc, lcv); /* add to free list */ 1893 break; 1894 case XD_SUB_WAIT: 1895 wakeup(iorq); 1896 case XD_SUB_POLL: 1897 xdcsc->ndone++; 1898 iorq->mode = 1899 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1900 break; 1901 } 1902 1903 } else { 1904 1905 /* resubmit, put at front of wait queue */ 1906 XDC_HWAIT(xdcsc, lcv); 1907 } 1908 } 1909 1910 /* 1911 * now, if stuff is waiting, start it. 1912 * since we just reset it should go 1913 */ 1914 xdc_start(xdcsc, XDC_MAXIOPB); 1915 1916 /* ok, we did it */ 1917 if (oldfree == 0 && xdcsc->nfree) 1918 wakeup(&xdcsc->nfree); 1919 1920#ifdef XDC_DIAG 1921 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1922 if (del != XDC_MAXIOPB) 1923 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1924 device_xname(xdcsc->sc_dev), del, XDC_MAXIOPB); 1925 else 1926 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1927 printf("%s: diag: lots of done jobs (%d)\n", 1928 device_xname(xdcsc->sc_dev), xdcsc->ndone); 1929#endif 1930 printf("RESET DONE\n"); 1931 return (retval); 1932} 1933/* 1934 * xdc_start: start all waiting buffers 1935 */ 1936 1937void 1938xdc_start(struct xdc_softc *xdcsc, int maxio) 1939 1940{ 1941 int rqno; 1942 while (maxio && xdcsc->nwait && 1943 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1944 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1945 * param */ 1946 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1947 panic("xdc_start"); /* should never happen */ 1948 maxio--; 1949 } 1950} 1951/* 1952 * xdc_remove_iorq: remove "done" IOPB's. 1953 */ 1954 1955int 1956xdc_remove_iorq(struct xdc_softc *xdcsc) 1957{ 1958 int errnum, rqno, comm, errs; 1959 struct xdc *xdc = xdcsc->xdc; 1960 struct xd_iopb *iopb; 1961 struct xd_iorq *iorq; 1962 struct buf *bp; 1963 1964 if (xdc->xdc_csr & XDC_F_ERROR) { 1965 /* 1966 * FATAL ERROR: should never happen under normal use. This 1967 * error is so bad, you can't even tell which IOPB is bad, so 1968 * we dump them all. 1969 */ 1970 errnum = xdc->xdc_f_err; 1971 aprint_error_dev(xdcsc->sc_dev, "fatal error 0x%02x: %s\n", 1972 errnum, xdc_e2str(errnum)); 1973 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errnum, 0) != XD_ERR_AOK) { 1974 aprint_error_dev(xdcsc->sc_dev, "soft reset failed!\n"); 1975 panic("xdc_remove_iorq: controller DEAD"); 1976 } 1977 return (XD_ERR_AOK); 1978 } 1979 1980 /* 1981 * get iopb that is done 1982 * 1983 * hmm... I used to read the address of the done IOPB off the VME 1984 * registers and calculate the rqno directly from that. that worked 1985 * until I started putting a load on the controller. when loaded, i 1986 * would get interrupts but neither the REMIOPB or F_ERROR bits would 1987 * be set, even after DELAY'ing a while! later on the timeout 1988 * routine would detect IOPBs that were marked "running" but their 1989 * "done" bit was set. rather than dealing directly with this 1990 * problem, it is just easier to look at all running IOPB's for the 1991 * done bit. 1992 */ 1993 if (xdc->xdc_csr & XDC_REMIOPB) { 1994 xdc->xdc_csr = XDC_CLRRIO; 1995 } 1996 1997 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 1998 iorq = &xdcsc->reqs[rqno]; 1999 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2000 continue; /* free, or done */ 2001 iopb = &xdcsc->iopbase[rqno]; 2002 if (iopb->done == 0) 2003 continue; /* not done yet */ 2004 2005#ifdef XDC_DEBUG 2006 { 2007 u_char *rio = (u_char *) iopb; 2008 int sz = sizeof(struct xd_iopb), lcv; 2009 printf("%s: rio #%d [", device_xname(xdcsc->sc_dev), rqno); 2010 for (lcv = 0; lcv < sz; lcv++) 2011 printf(" %02x", rio[lcv]); 2012 printf("]\n"); 2013 } 2014#endif /* XDC_DEBUG */ 2015 2016 xdcsc->nrun--; 2017 2018 comm = iopb->comm; 2019 errs = iopb->errs; 2020 2021 if (errs) 2022 iorq->errnum = iopb->errnum; 2023 else 2024 iorq->errnum = 0; 2025 2026 /* handle non-fatal errors */ 2027 2028 if (errs && 2029 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2030 continue; /* AOK: we resubmitted it */ 2031 2032 2033 /* this iorq is now done (hasn't been restarted or anything) */ 2034 2035 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2036 xdc_perror(iorq, iopb, 0); 2037 2038 /* now, if read/write check to make sure we got all the data 2039 * we needed. (this may not be the case if we got an error in 2040 * the middle of a multisector request). */ 2041 2042 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2043 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2044 /* we just successfully processed a bad144 sector 2045 * note: if we are in bad 144 mode, the pointers have 2046 * been advanced already (see above) and are pointing 2047 * at the bad144 sector. to exit bad144 mode, we 2048 * must advance the pointers 1 sector and issue a new 2049 * request if there are still sectors left to process 2050 * 2051 */ 2052 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2053 2054 /* exit b144 mode */ 2055 iorq->mode = iorq->mode & (~XD_MODE_B144); 2056 2057 if (iorq->sectcnt) { /* more to go! */ 2058 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 2059 iopb->errs = iopb->done = 0; 2060 iorq->tries = 0; 2061 iopb->sectcnt = iorq->sectcnt; 2062 iopb->cylno = iorq->blockno / 2063 iorq->xd->sectpercyl; 2064 iopb->headno = 2065 (iorq->blockno / iorq->xd->nhead) % 2066 iorq->xd->nhead; 2067 iopb->sectno = iorq->blockno % XDFM_BPS; 2068 iopb->daddr = (u_long) iorq->dbuf; 2069 XDC_HWAIT(xdcsc, rqno); 2070 xdc_start(xdcsc, 1); /* resubmit */ 2071 continue; 2072 } 2073 } 2074 /* final cleanup, totally done with this request */ 2075 2076 switch (XD_STATE(iorq->mode)) { 2077 case XD_SUB_NORM: 2078 bp = iorq->buf; 2079 if (errs) { 2080 bp->b_error = EIO; 2081 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2082 } else { 2083 bp->b_resid = 0; /* done */ 2084 } 2085 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2086 iorq->dmamap->dm_mapsize, 2087 (bp->b_flags & B_READ) 2088 ? BUS_DMASYNC_POSTREAD 2089 : BUS_DMASYNC_POSTWRITE); 2090 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2091 2092 disk_unbusy(&iorq->xd->sc_dk, 2093 (bp->b_bcount - bp->b_resid), 2094 (bp->b_flags & B_READ)); 2095 XDC_FREE(xdcsc, rqno); 2096 biodone(bp); 2097 break; 2098 case XD_SUB_WAIT: 2099 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2100 xdcsc->ndone++; 2101 wakeup(iorq); 2102 break; 2103 case XD_SUB_POLL: 2104 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2105 xdcsc->ndone++; 2106 break; 2107 } 2108 } 2109 2110 return (XD_ERR_AOK); 2111} 2112 2113/* 2114 * xdc_perror: print error. 2115 * - if still_trying is true: we got an error, retried and got a 2116 * different error. in that case lasterror is the old error, 2117 * and errnum is the new one. 2118 * - if still_trying is not true, then if we ever had an error it 2119 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2120 * from that error (otherwise iorq->errnum == iorq->lasterror). 2121 */ 2122void 2123xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 2124 2125{ 2126 2127 int error = iorq->lasterror; 2128 2129 printf("%s", (iorq->xd) ? device_xname(iorq->xd->sc_dev) 2130 : device_xname(iorq->xdc->sc_dev)); 2131 if (iorq->buf) 2132 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2133 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2134 printf("%s %d/%d/%d: ", 2135 (iopb->comm == XDCMD_RD) ? "read" : "write", 2136 iopb->cylno, iopb->headno, iopb->sectno); 2137 printf("%s", xdc_e2str(error)); 2138 2139 if (still_trying) 2140 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errnum)); 2141 else 2142 if (iorq->errnum == 0) 2143 printf(" [recovered in %d tries]", iorq->tries); 2144 2145 printf("\n"); 2146} 2147 2148/* 2149 * xdc_error: non-fatal error encountered... recover. 2150 * return AOK if resubmitted, return FAIL if this iopb is done 2151 */ 2152int 2153xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 2154 int rqno, int comm) 2155 2156{ 2157 int errnum = iorq->errnum; 2158 int erract = errnum & XD_ERA_MASK; 2159 int oldmode, advance; 2160#ifdef __sparc__ 2161 int i; 2162#endif 2163 2164 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2165 oldmode = iorq->mode; 2166 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2167 xdcsc->ndone++; 2168 /* make xdc_start ignore us */ 2169 xdc_reset(xdcsc, 1, XD_RSET_NONE, errnum, iorq->xd); 2170 iorq->mode = oldmode; 2171 xdcsc->ndone--; 2172 } 2173 /* check for read/write to a sector in bad144 table if bad: redirect 2174 * request to bad144 area */ 2175 2176 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2177 (iorq->mode & XD_MODE_B144) == 0) { 2178 advance = iorq->sectcnt - iopb->sectcnt; 2179 XDC_ADVANCE(iorq, advance); 2180#ifdef __sparc__ 2181 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2182 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2183 iorq->blockno % iorq->xd->nsect)) != -1) { 2184 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2185 * redirect */ 2186 iopb->errnum = iopb->done = iopb->errs = 0; 2187 iopb->sectcnt = 1; 2188 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2189 /* second to last acyl */ 2190 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2191 * standard */ 2192 iopb->headno = i / iorq->xd->nhead; 2193 iopb->sectno = i % iorq->xd->nhead; 2194 XDC_HWAIT(xdcsc, rqno); 2195 xdc_start(xdcsc, 1); /* resubmit */ 2196 return (XD_ERR_AOK); /* recovered! */ 2197 } 2198#endif 2199 } 2200 2201 /* 2202 * it isn't a bad144 sector, must be real error! see if we can retry 2203 * it? 2204 */ 2205 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2206 xdc_perror(iorq, iopb, 1); /* inform of error state 2207 * change */ 2208 iorq->lasterror = errnum; 2209 2210 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2211 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2212 iorq->tries++; 2213 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2214 XDC_HWAIT(xdcsc, rqno); 2215 xdc_start(xdcsc, 1); /* restart */ 2216 return (XD_ERR_AOK); /* recovered! */ 2217 } 2218 2219 /* failed to recover from this error */ 2220 return (XD_ERR_FAIL); 2221} 2222 2223/* 2224 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2225 */ 2226void 2227xdc_tick(void *arg) 2228 2229{ 2230 struct xdc_softc *xdcsc = arg; 2231 int lcv, s, reset = 0; 2232#ifdef XDC_DIAG 2233 int nwait, nrun, nfree, ndone, whd = 0; 2234 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2235 s = splbio(); 2236 nwait = xdcsc->nwait; 2237 nrun = xdcsc->nrun; 2238 nfree = xdcsc->nfree; 2239 ndone = xdcsc->ndone; 2240 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2241 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2242 splx(s); 2243 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2244 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2245 device_xname(xdcsc->sc_dev), nwait, nfree, nrun, ndone, 2246 XDC_MAXIOPB); 2247 memset(mark, 0, sizeof(mark)); 2248 printf("FREE: "); 2249 for (lcv = nfree; lcv > 0; lcv--) { 2250 printf("%d ", fqc[lcv - 1]); 2251 mark[fqc[lcv - 1]] = 1; 2252 } 2253 printf("\nWAIT: "); 2254 lcv = nwait; 2255 while (lcv > 0) { 2256 printf("%d ", wqc[whd]); 2257 mark[wqc[whd]] = 1; 2258 whd = (whd + 1) % XDC_MAXIOPB; 2259 lcv--; 2260 } 2261 printf("\n"); 2262 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2263 if (mark[lcv] == 0) 2264 printf("MARK: running %d: mode %d done %d errs %d errnum 0x%x ttl %d buf %p\n", 2265 lcv, xdcsc->reqs[lcv].mode, 2266 xdcsc->iopbase[lcv].done, 2267 xdcsc->iopbase[lcv].errs, 2268 xdcsc->iopbase[lcv].errnum, 2269 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2270 } 2271 } else 2272 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2273 printf("%s: diag: lots of done jobs (%d)\n", 2274 device_xname(xdcsc->sc_dev), ndone); 2275 2276#endif 2277#ifdef XDC_DEBUG 2278 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2279 device_xname(xdcsc->sc_dev), 2280 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2281 xdcsc->ndone); 2282 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2283 if (xdcsc->reqs[lcv].mode) 2284 printf("running %d: mode %d done %d errs %d errnum 0x%x\n", 2285 lcv, 2286 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2287 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errnum); 2288 } 2289#endif 2290 2291 /* reduce ttl for each request if one goes to zero, reset xdc */ 2292 s = splbio(); 2293 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2294 if (xdcsc->reqs[lcv].mode == 0 || 2295 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2296 continue; 2297 xdcsc->reqs[lcv].ttl--; 2298 if (xdcsc->reqs[lcv].ttl == 0) 2299 reset = 1; 2300 } 2301 if (reset) { 2302 printf("%s: watchdog timeout\n", device_xname(xdcsc->sc_dev)); 2303 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2304 } 2305 splx(s); 2306 2307 /* until next time */ 2308 2309 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2310} 2311 2312/* 2313 * xdc_ioctlcmd: this function provides a user level interface to the 2314 * controller via ioctl. this allows "format" programs to be written 2315 * in user code, and is also useful for some debugging. we return 2316 * an error code. called at user priority. 2317 */ 2318int 2319xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2320 2321{ 2322 int s, rqno, dummy; 2323 char *dvmabuf = NULL, *buf = NULL; 2324 struct xdc_softc *xdcsc; 2325 int rseg, error; 2326 bus_dma_segment_t seg; 2327 2328 /* check sanity of requested command */ 2329 2330 switch (xio->cmd) { 2331 2332 case XDCMD_NOP: /* no op: everything should be zero */ 2333 if (xio->subfn || xio->dptr || xio->dlen || 2334 xio->block || xio->sectcnt) 2335 return (EINVAL); 2336 break; 2337 2338 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2339 case XDCMD_WR: 2340 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2341 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2342 return (EINVAL); 2343 break; 2344 2345 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2346 return (EINVAL); 2347 2348 case XDCMD_WRP: /* write parameters */ 2349 return (EINVAL);/* not useful, except maybe drive 2350 * parameters... but drive parameters should 2351 * go via disklabel changes */ 2352 2353 case XDCMD_RDP: /* read parameters */ 2354 if (xio->subfn != XDFUN_DRV || 2355 xio->dlen || xio->block || xio->dptr) 2356 return (EINVAL); /* allow read drive params to 2357 * get hw_spt */ 2358 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2359 return (0); 2360 break; 2361 2362 case XDCMD_XRD: /* extended read/write */ 2363 case XDCMD_XWR: 2364 2365 switch (xio->subfn) { 2366 2367 case XDFUN_THD:/* track headers */ 2368 if (xio->sectcnt != xd->hw_spt || 2369 (xio->block % xd->nsect) != 0 || 2370 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2371 xio->dptr == NULL) 2372 return (EINVAL); 2373 xio->sectcnt = 0; 2374 break; 2375 2376 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2377 if (xio->cmd == XDCMD_XRD) 2378 return (EINVAL); /* no XDFUN_VFY */ 2379 if (xio->sectcnt || xio->dlen || 2380 (xio->block % xd->nsect) != 0 || xio->dptr) 2381 return (EINVAL); 2382 break; 2383 2384 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2385 return (EINVAL); /* not yet */ 2386 2387 case XDFUN_DM: /* defect map */ 2388 case XDFUN_DMX:/* defect map (alternate location) */ 2389 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2390 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2391 return (EINVAL); 2392 break; 2393 2394 default: 2395 return (EINVAL); 2396 } 2397 break; 2398 2399 case XDCMD_TST: /* diagnostics */ 2400 return (EINVAL); 2401 2402 default: 2403 return (EINVAL);/* ??? */ 2404 } 2405 2406 xdcsc = xd->parent; 2407 2408 /* create DVMA buffer for request if needed */ 2409 if (xio->dlen) { 2410 bus_addr_t busbuf; 2411 2412 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2413 &seg, &rseg, 2414 xio->dlen, (void **)&buf, 2415 &busbuf)) != 0) { 2416 return (error); 2417 } 2418 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2419 2420 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2421 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2422 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2423 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2424 return (error); 2425 } 2426 } 2427 } 2428 2429 /* do it! */ 2430 2431 error = 0; 2432 s = splbio(); 2433 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2434 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2435 if (rqno == XD_ERR_FAIL) { 2436 error = EIO; 2437 goto done; 2438 } 2439 xio->errnum = xdcsc->reqs[rqno].errnum; 2440 xio->tries = xdcsc->reqs[rqno].tries; 2441 XDC_DONE(xdcsc, rqno, dummy); 2442 __USE(dummy); 2443 2444 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2445 error = copyout(buf, xio->dptr, xio->dlen); 2446 2447done: 2448 splx(s); 2449 if (dvmabuf) { 2450 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2451 xio->dlen, buf); 2452 } 2453 return (error); 2454} 2455 2456/* 2457 * xdc_e2str: convert error code number into an error string 2458 */ 2459const char * 2460xdc_e2str(int no) 2461{ 2462 switch (no) { 2463 case XD_ERR_FAIL: 2464 return ("Software fatal error"); 2465 case XD_ERR_AOK: 2466 return ("Successful completion"); 2467 case XD_ERR_ICYL: 2468 return ("Illegal cylinder address"); 2469 case XD_ERR_IHD: 2470 return ("Illegal head address"); 2471 case XD_ERR_ISEC: 2472 return ("Illgal sector address"); 2473 case XD_ERR_CZER: 2474 return ("Count zero"); 2475 case XD_ERR_UIMP: 2476 return ("Unimplemented command"); 2477 case XD_ERR_IF1: 2478 return ("Illegal field length 1"); 2479 case XD_ERR_IF2: 2480 return ("Illegal field length 2"); 2481 case XD_ERR_IF3: 2482 return ("Illegal field length 3"); 2483 case XD_ERR_IF4: 2484 return ("Illegal field length 4"); 2485 case XD_ERR_IF5: 2486 return ("Illegal field length 5"); 2487 case XD_ERR_IF6: 2488 return ("Illegal field length 6"); 2489 case XD_ERR_IF7: 2490 return ("Illegal field length 7"); 2491 case XD_ERR_ISG: 2492 return ("Illegal scatter/gather length"); 2493 case XD_ERR_ISPT: 2494 return ("Not enough sectors per track"); 2495 case XD_ERR_ALGN: 2496 return ("Next IOPB address alignment error"); 2497 case XD_ERR_SGAL: 2498 return ("Scatter/gather address alignment error"); 2499 case XD_ERR_SGEC: 2500 return ("Scatter/gather with auto-ECC"); 2501 case XD_ERR_SECC: 2502 return ("Soft ECC corrected"); 2503 case XD_ERR_SIGN: 2504 return ("ECC ignored"); 2505 case XD_ERR_ASEK: 2506 return ("Auto-seek retry recovered"); 2507 case XD_ERR_RTRY: 2508 return ("Soft retry recovered"); 2509 case XD_ERR_HECC: 2510 return ("Hard data ECC"); 2511 case XD_ERR_NHDR: 2512 return ("Header not found"); 2513 case XD_ERR_NRDY: 2514 return ("Drive not ready"); 2515 case XD_ERR_TOUT: 2516 return ("Operation timeout"); 2517 case XD_ERR_VTIM: 2518 return ("VMEDMA timeout"); 2519 case XD_ERR_DSEQ: 2520 return ("Disk sequencer error"); 2521 case XD_ERR_HDEC: 2522 return ("Header ECC error"); 2523 case XD_ERR_RVFY: 2524 return ("Read verify"); 2525 case XD_ERR_VFER: 2526 return ("Fatail VMEDMA error"); 2527 case XD_ERR_VBUS: 2528 return ("VMEbus error"); 2529 case XD_ERR_DFLT: 2530 return ("Drive faulted"); 2531 case XD_ERR_HECY: 2532 return ("Header error/cylinder"); 2533 case XD_ERR_HEHD: 2534 return ("Header error/head"); 2535 case XD_ERR_NOCY: 2536 return ("Drive not on-cylinder"); 2537 case XD_ERR_SEEK: 2538 return ("Seek error"); 2539 case XD_ERR_ILSS: 2540 return ("Illegal sector size"); 2541 case XD_ERR_SEC: 2542 return ("Soft ECC"); 2543 case XD_ERR_WPER: 2544 return ("Write-protect error"); 2545 case XD_ERR_IRAM: 2546 return ("IRAM self test failure"); 2547 case XD_ERR_MT3: 2548 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2549 case XD_ERR_MT4: 2550 return ("Maintenance test 4 failure (header shift reg)"); 2551 case XD_ERR_MT5: 2552 return ("Maintenance test 5 failure (VMEDMA regs)"); 2553 case XD_ERR_MT6: 2554 return ("Maintenance test 6 failure (REGCEL chip)"); 2555 case XD_ERR_MT7: 2556 return ("Maintenance test 7 failure (buffer parity)"); 2557 case XD_ERR_MT8: 2558 return ("Maintenance test 8 failure (disk FIFO)"); 2559 case XD_ERR_IOCK: 2560 return ("IOPB checksum miscompare"); 2561 case XD_ERR_IODM: 2562 return ("IOPB DMA fatal"); 2563 case XD_ERR_IOAL: 2564 return ("IOPB address alignment error"); 2565 case XD_ERR_FIRM: 2566 return ("Firmware error"); 2567 case XD_ERR_MMOD: 2568 return ("Illegal maintenance mode test number"); 2569 case XD_ERR_ACFL: 2570 return ("ACFAIL asserted"); 2571 default: 2572 return ("Unknown error"); 2573 } 2574} 2575