1 /* $NetBSD: xd.c,v 1.91 2014/03/16 05:20:29 dholland 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 1.91 2014/03/16 05:20:29 dholland Exp $"); 49 50 #undef XDC_DEBUG /* full debug */ 51 #define XDC_DIAG /* extra sanity checks */ 52 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 53 #define XDC_DIAG /* link in with master DIAG option */ 54 #endif 55 56 #include <sys/param.h> 57 #include <sys/proc.h> 58 #include <sys/systm.h> 59 #include <sys/kernel.h> 60 #include <sys/file.h> 61 #include <sys/stat.h> 62 #include <sys/ioctl.h> 63 #include <sys/buf.h> 64 #include <sys/bufq.h> 65 #include <sys/uio.h> 66 #include <sys/malloc.h> 67 #include <sys/device.h> 68 #include <sys/disklabel.h> 69 #include <sys/disk.h> 70 #include <sys/syslog.h> 71 #include <sys/dkbad.h> 72 #include <sys/conf.h> 73 #include <sys/kauth.h> 74 75 #include <sys/bus.h> 76 #include <sys/intr.h> 77 78 #if defined(__sparc__) || defined(sun3) 79 #include <dev/sun/disklabel.h> 80 #endif 81 82 #include <dev/vme/vmereg.h> 83 #include <dev/vme/vmevar.h> 84 85 #include <dev/vme/xdreg.h> 86 #include <dev/vme/xdvar.h> 87 #include <dev/vme/xio.h> 88 89 #include "locators.h" 90 91 /* 92 * macros 93 */ 94 95 /* 96 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 97 */ 98 #define XDC_TWAIT(SC, N) { \ 99 (SC)->waitq[(SC)->waitend] = (N); \ 100 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 101 (SC)->nwait++; \ 102 } 103 104 /* 105 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 106 */ 107 #define XDC_HWAIT(SC, N) { \ 108 (SC)->waithead = ((SC)->waithead == 0) ? \ 109 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 110 (SC)->waitq[(SC)->waithead] = (N); \ 111 (SC)->nwait++; \ 112 } 113 114 /* 115 * XDC_GET_WAITER: gets the first request waiting on the waitq 116 * and removes it (so it can be submitted) 117 */ 118 #define XDC_GET_WAITER(XDCSC, RQ) { \ 119 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 120 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 121 xdcsc->nwait--; \ 122 } 123 124 /* 125 * XDC_FREE: add iorq "N" to SC's free list 126 */ 127 #define XDC_FREE(SC, N) { \ 128 (SC)->freereq[(SC)->nfree++] = (N); \ 129 (SC)->reqs[N].mode = 0; \ 130 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 131 } 132 133 134 /* 135 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 136 */ 137 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 138 139 /* 140 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 141 */ 142 #define XDC_GO(XDC, ADDR) { \ 143 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 144 (ADDR) = ((ADDR) >> 8); \ 145 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 146 (ADDR) = ((ADDR) >> 8); \ 147 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 148 (ADDR) = ((ADDR) >> 8); \ 149 (XDC)->xdc_iopbaddr3 = (ADDR); \ 150 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 151 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 152 } 153 154 /* 155 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 156 * LCV is a counter. If it goes to zero then we timed out. 157 */ 158 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 159 (LCV) = (TIME); \ 160 while ((LCV) > 0) { \ 161 if ((XDC)->xdc_csr & (BITS)) break; \ 162 (LCV) = (LCV) - 1; \ 163 DELAY(1); \ 164 } \ 165 } 166 167 /* 168 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 169 */ 170 #define XDC_DONE(SC,RQ,ER) { \ 171 if ((RQ) == XD_ERR_FAIL) { \ 172 (ER) = (RQ); \ 173 } else { \ 174 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 175 wakeup(&(SC)->ndone); \ 176 (ER) = (SC)->reqs[RQ].errnum; \ 177 XDC_FREE((SC), (RQ)); \ 178 } \ 179 } 180 181 /* 182 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 183 */ 184 #define XDC_ADVANCE(IORQ, N) { \ 185 if (N) { \ 186 (IORQ)->sectcnt -= (N); \ 187 (IORQ)->blockno += (N); \ 188 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 189 } \ 190 } 191 192 /* 193 * note - addresses you can sleep on: 194 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 195 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 196 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 197 * to drop below XDC_SUBWAITLIM) 198 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 199 */ 200 201 202 /* 203 * function prototypes 204 * "xdc_*" functions are internal, all others are external interfaces 205 */ 206 207 extern int pil_to_vme[]; /* from obio.c */ 208 209 /* internals */ 210 int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 211 const char *xdc_e2str(int); 212 int xdc_error(struct xdc_softc *, struct xd_iorq *, 213 struct xd_iopb *, int, int); 214 int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 215 void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 216 int xdc_piodriver(struct xdc_softc *, int, int); 217 int xdc_remove_iorq(struct xdc_softc *); 218 int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 219 inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, 220 struct xd_softc *, int, u_long, int, 221 void *, struct buf *); 222 void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 223 void xdc_start(struct xdc_softc *, int); 224 int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 225 int xdc_submit_iorq(struct xdc_softc *, int, int); 226 void xdc_tick(void *); 227 void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 228 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 229 int *, bus_size_t, void **, bus_addr_t *); 230 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 231 int, bus_size_t, void *); 232 233 234 /* machine interrupt hook */ 235 int xdcintr(void *); 236 237 /* autoconf */ 238 int xdcmatch(device_t, cfdata_t, void *); 239 void xdcattach(device_t, device_t, void *); 240 int xdmatch(device_t, cfdata_t, void *); 241 void xdattach(device_t, device_t, void *); 242 static int xdc_probe(void *, bus_space_tag_t, bus_space_handle_t); 243 244 static void xddummystrat(struct buf *); 245 int xdgetdisklabel(struct xd_softc *, void *); 246 247 /* XXX - think about this more.. xd_machdep? */ 248 void xdc_md_setup(void); 249 int XDC_DELAY; 250 251 #if defined(__sparc__) 252 #include <sparc/sparc/vaddrs.h> 253 #include <sparc/sparc/cpuvar.h> 254 void xdc_md_setup(void) 255 { 256 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 257 XDC_DELAY = XDC_DELAY_4_300; 258 else 259 XDC_DELAY = XDC_DELAY_SPARC; 260 } 261 #elif defined(sun3) 262 void xdc_md_setup(void) 263 { 264 XDC_DELAY = XDC_DELAY_SUN3; 265 } 266 #else 267 void xdc_md_setup(void) 268 { 269 XDC_DELAY = 0; 270 } 271 #endif 272 273 /* 274 * cfattach's: device driver interface to autoconfig 275 */ 276 277 CFATTACH_DECL_NEW(xdc, sizeof(struct xdc_softc), 278 xdcmatch, xdcattach, NULL, NULL); 279 280 CFATTACH_DECL_NEW(xd, sizeof(struct xd_softc), 281 xdmatch, xdattach, NULL, NULL); 282 283 extern struct cfdriver xd_cd; 284 285 dev_type_open(xdopen); 286 dev_type_close(xdclose); 287 dev_type_read(xdread); 288 dev_type_write(xdwrite); 289 dev_type_ioctl(xdioctl); 290 dev_type_strategy(xdstrategy); 291 dev_type_dump(xddump); 292 dev_type_size(xdsize); 293 294 const struct bdevsw xd_bdevsw = { 295 .d_open = xdopen, 296 .d_close = xdclose, 297 .d_strategy = xdstrategy, 298 .d_ioctl = xdioctl, 299 .d_dump = xddump, 300 .d_psize = xdsize, 301 .d_flag = D_DISK 302 }; 303 304 const struct cdevsw xd_cdevsw = { 305 .d_open = xdopen, 306 .d_close = xdclose, 307 .d_read = xdread, 308 .d_write = xdwrite, 309 .d_ioctl = xdioctl, 310 .d_stop = nostop, 311 .d_tty = notty, 312 .d_poll = nopoll, 313 .d_mmap = nommap, 314 .d_kqfilter = nokqfilter, 315 .d_flag = D_DISK 316 }; 317 318 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 319 int driveno; /* unit number */ 320 int fullmode; /* submit mode */ 321 int booting; /* are we booting or not? */ 322 }; 323 324 /* 325 * dkdriver 326 */ 327 328 struct dkdriver xddkdriver = {xdstrategy}; 329 330 /* 331 * start: disk label fix code (XXX) 332 */ 333 334 static void *xd_labeldata; 335 336 static void 337 xddummystrat(struct buf *bp) 338 { 339 if (bp->b_bcount != XDFM_BPS) 340 panic("xddummystrat"); 341 memcpy(bp->b_data, xd_labeldata, XDFM_BPS); 342 bp->b_oflags |= BO_DONE; 343 bp->b_cflags &= ~BC_BUSY; 344 } 345 346 int 347 xdgetdisklabel(struct xd_softc *xd, void *b) 348 { 349 const char *err; 350 #if defined(__sparc__) || defined(sun3) 351 struct sun_disklabel *sdl; 352 #endif 353 354 /* We already have the label data in `b'; setup for dummy strategy */ 355 xd_labeldata = b; 356 357 /* Required parameter for readdisklabel() */ 358 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 359 360 err = readdisklabel(MAKEDISKDEV(0, device_unit(xd->sc_dev), RAW_PART), 361 xddummystrat, 362 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 363 if (err) { 364 aprint_error_dev(xd->sc_dev, "%s\n", err); 365 return(XD_ERR_FAIL); 366 } 367 368 #if defined(__sparc__) || defined(sun3) 369 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 370 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 371 if (sdl->sl_magic == SUN_DKMAGIC) { 372 xd->pcyl = sdl->sl_pcylinders; 373 } else 374 #endif 375 { 376 printf("%s: WARNING: no `pcyl' in disk label.\n", 377 device_xname(xd->sc_dev)); 378 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 379 xd->sc_dk.dk_label->d_acylinders; 380 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 381 device_xname(xd->sc_dev), xd->pcyl); 382 } 383 384 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 385 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 386 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 387 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 388 xd->sectpercyl = xd->nhead * xd->nsect; 389 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 390 * sun->bsd */ 391 return(XD_ERR_AOK); 392 } 393 394 /* 395 * end: disk label fix code (XXX) 396 */ 397 398 /* 399 * Shorthand for allocating, mapping and loading a DMA buffer 400 */ 401 int 402 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) 403 { 404 int nseg; 405 int error; 406 407 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 408 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 409 return (error); 410 } 411 412 if ((error = bus_dmamem_map(tag, seg, nseg, 413 len, kvap, 414 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 415 bus_dmamem_free(tag, seg, nseg); 416 return (error); 417 } 418 419 if ((error = bus_dmamap_load(tag, map, 420 *kvap, len, NULL, 421 BUS_DMA_NOWAIT)) != 0) { 422 bus_dmamem_unmap(tag, *kvap, len); 423 bus_dmamem_free(tag, seg, nseg); 424 return (error); 425 } 426 427 *dmap = map->dm_segs[0].ds_addr; 428 *nsegp = nseg; 429 return (0); 430 } 431 432 void 433 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) 434 { 435 436 bus_dmamap_unload(tag, map); 437 bus_dmamem_unmap(tag, kva, len); 438 bus_dmamem_free(tag, seg, nseg); 439 } 440 441 442 /* 443 * a u t o c o n f i g f u n c t i o n s 444 */ 445 446 /* 447 * xdcmatch: determine if xdc is present or not. we do a 448 * soft reset to detect the xdc. 449 */ 450 451 int 452 xdc_probe(void *arg, bus_space_tag_t tag, bus_space_handle_t handle) 453 { 454 struct xdc *xdc = (void *)handle; /* XXX */ 455 int del = 0; 456 457 xdc->xdc_csr = XDC_RESET; 458 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 459 return (del > 0 ? 0 : EIO); 460 } 461 462 int 463 xdcmatch(device_t parent, cfdata_t cf, void *aux) 464 { 465 struct vme_attach_args *va = aux; 466 vme_chipset_tag_t ct = va->va_vct; 467 vme_am_t mod; 468 int error; 469 470 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 471 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 472 return (0); 473 474 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 475 mod, VME_D32, xdc_probe, 0); 476 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 477 478 return (error == 0); 479 } 480 481 /* 482 * xdcattach: attach controller 483 */ 484 void 485 xdcattach(device_t parent, device_t self, void *aux) 486 { 487 struct vme_attach_args *va = aux; 488 vme_chipset_tag_t ct = va->va_vct; 489 bus_space_tag_t bt; 490 bus_space_handle_t bh; 491 vme_intr_handle_t ih; 492 vme_am_t mod; 493 struct xdc_softc *xdc = device_private(self); 494 struct xdc_attach_args xa; 495 int lcv, rqno, error; 496 struct xd_iopb_ctrl *ctl; 497 bus_dma_segment_t seg; 498 int rseg; 499 vme_mapresc_t resc; 500 bus_addr_t busaddr; 501 502 xdc->sc_dev = self; 503 xdc_md_setup(); 504 505 /* get addressing and intr level stuff from autoconfig and load it 506 * into our xdc_softc. */ 507 508 xdc->dmatag = va->va_bdt; 509 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 510 511 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 512 panic("xdc: vme alloc"); 513 514 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 515 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 516 panic("xdc: vme_map"); 517 518 xdc->xdc = (struct xdc *) bh; /* XXX */ 519 xdc->ipl = va->ilevel; 520 xdc->vector = va->ivector; 521 522 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 523 xdc->sc_drives[lcv] = NULL; 524 525 /* 526 * allocate and zero buffers 527 * 528 * note: we simplify the code by allocating the max number of iopbs and 529 * iorq's up front. thus, we avoid linked lists and the costs 530 * associated with them in exchange for wasting a little memory. 531 */ 532 533 /* Get DMA handle for misc. transfers */ 534 if ((error = vme_dmamap_create( 535 ct, /* VME chip tag */ 536 MAXPHYS, /* size */ 537 VME_AM_A24, /* address modifier */ 538 VME_D32, /* data size */ 539 0, /* swap */ 540 1, /* nsegments */ 541 MAXPHYS, /* maxsegsz */ 542 0, /* boundary */ 543 BUS_DMA_NOWAIT, 544 &xdc->auxmap)) != 0) { 545 546 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 547 error); 548 return; 549 } 550 551 552 /* Get DMA handle for mapping iorq descriptors */ 553 if ((error = vme_dmamap_create( 554 ct, /* VME chip tag */ 555 XDC_MAXIOPB * sizeof(struct xd_iopb), 556 VME_AM_A24, /* address modifier */ 557 VME_D32, /* data size */ 558 0, /* swap */ 559 1, /* nsegments */ 560 XDC_MAXIOPB * sizeof(struct xd_iopb), 561 0, /* boundary */ 562 BUS_DMA_NOWAIT, 563 &xdc->iopmap)) != 0) { 564 565 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 566 error); 567 return; 568 } 569 570 /* Get DMA buffer for iorq descriptors */ 571 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 572 XDC_MAXIOPB * sizeof(struct xd_iopb), 573 (void **)&xdc->iopbase, 574 &busaddr)) != 0) { 575 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 576 error); 577 return; 578 } 579 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 580 581 memset(xdc->iopbase, 0, XDC_MAXIOPB * sizeof(struct xd_iopb)); 582 583 xdc->reqs = (struct xd_iorq *) 584 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 585 M_DEVBUF, M_NOWAIT|M_ZERO); 586 if (xdc->reqs == NULL) 587 panic("xdc malloc"); 588 589 /* init free list, iorq to iopb pointers, and non-zero fields in the 590 * iopb which never change. */ 591 592 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 593 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 594 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 595 xdc->freereq[lcv] = lcv; 596 xdc->iopbase[lcv].fixd = 1; /* always the same */ 597 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 598 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 599 600 if ((error = vme_dmamap_create( 601 ct, /* VME chip tag */ 602 MAXPHYS, /* size */ 603 VME_AM_A24, /* address modifier */ 604 VME_D32, /* data size */ 605 0, /* swap */ 606 1, /* nsegments */ 607 MAXPHYS, /* maxsegsz */ 608 0, /* boundary */ 609 BUS_DMA_NOWAIT, 610 &xdc->reqs[lcv].dmamap)) != 0) { 611 612 aprint_error_dev(xdc->sc_dev, "DMA buffer map create error %d\n", 613 error); 614 return; 615 } 616 } 617 xdc->nfree = XDC_MAXIOPB; 618 xdc->nrun = 0; 619 xdc->waithead = xdc->waitend = xdc->nwait = 0; 620 xdc->ndone = 0; 621 622 /* init queue of waiting bufs */ 623 624 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 625 callout_init(&xdc->sc_tick_ch, 0); 626 627 /* 628 * section 7 of the manual tells us how to init the controller: 629 * - read controller parameters (6/0) 630 * - write controller parameters (5/0) 631 */ 632 633 /* read controller parameters and insure we have a 753/7053 */ 634 635 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 636 if (rqno == XD_ERR_FAIL) { 637 printf(": couldn't read controller params\n"); 638 return; /* shouldn't ever happen */ 639 } 640 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 641 if (ctl->ctype != XDCT_753) { 642 if (xdc->reqs[rqno].errnum) 643 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errnum)); 644 printf(": doesn't identify as a 753/7053\n"); 645 XDC_DONE(xdc, rqno, error); 646 return; 647 } 648 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 649 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 650 XDC_DONE(xdc, rqno, error); 651 652 /* now write controller parameters (xdc_cmd sets all params for us) */ 653 654 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 655 XDC_DONE(xdc, rqno, error); 656 if (error) { 657 aprint_error_dev(xdc->sc_dev, "controller config error: %s\n", 658 xdc_e2str(error)); 659 return; 660 } 661 662 /* link in interrupt with higher level software */ 663 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 664 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 665 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 666 device_xname(xdc->sc_dev), "intr"); 667 668 669 /* now we must look for disks using autoconfig */ 670 xa.fullmode = XD_SUB_POLL; 671 xa.booting = 1; 672 673 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 674 (void) config_found(self, (void *) &xa, NULL); 675 676 /* start the watchdog clock */ 677 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 678 679 } 680 681 /* 682 * xdmatch: probe for disk. 683 * 684 * note: we almost always say disk is present. this allows us to 685 * spin up and configure a disk after the system is booted (we can 686 * call xdattach!). 687 */ 688 int 689 xdmatch(device_t parent, cfdata_t cf, void *aux) 690 { 691 struct xdc_attach_args *xa = aux; 692 693 /* looking for autoconf wildcard or exact match */ 694 695 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 696 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 697 return 0; 698 699 return 1; 700 701 } 702 703 /* 704 * xdattach: attach a disk. this can be called from autoconf and also 705 * from xdopen/xdstrategy. 706 */ 707 void 708 xdattach(device_t parent, device_t self, void *aux) 709 { 710 struct xd_softc *xd = device_private(self); 711 struct xdc_softc *xdc = device_private(parent); 712 struct xdc_attach_args *xa = aux; 713 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 714 struct xd_iopb_drive *driopb; 715 struct dkbad *dkb; 716 int rseg, error; 717 bus_dma_segment_t seg; 718 bus_addr_t busaddr; 719 void * dmaddr; 720 char * buf; 721 722 xd->sc_dev = self; 723 724 /* 725 * Always re-initialize the disk structure. We want statistics 726 * to start with a clean slate. 727 */ 728 memset(&xd->sc_dk, 0, sizeof(xd->sc_dk)); 729 730 /* if booting, init the xd_softc */ 731 732 if (xa->booting) { 733 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 734 xd->flags = 0; 735 xd->parent = xdc; 736 } 737 xd->xd_drive = xa->driveno; 738 fmode = xa->fullmode; 739 xdc->sc_drives[xa->driveno] = xd; 740 741 /* if not booting, make sure we are the only process in the attach for 742 * this drive. if locked out, sleep on it. */ 743 744 if (!xa->booting) { 745 s = splbio(); 746 while (xd->state == XD_DRIVE_ATTACHING) { 747 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 748 splx(s); 749 return; 750 } 751 } 752 printf("%s at %s", 753 device_xname(xd->sc_dev), device_xname(xd->parent->sc_dev)); 754 } 755 756 /* we now have control */ 757 xd->state = XD_DRIVE_ATTACHING; 758 newstate = XD_DRIVE_UNKNOWN; 759 760 buf = NULL; 761 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 762 XDFM_BPS, 763 (void **)&buf, 764 &busaddr)) != 0) { 765 aprint_error_dev(xdc->sc_dev, "DMA buffer alloc error %d\n", 766 error); 767 return; 768 } 769 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 770 771 /* first try and reset the drive */ 772 773 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 774 XDC_DONE(xdc, rqno, error); 775 if (error == XD_ERR_NRDY) { 776 printf(" drive %d: off-line\n", xa->driveno); 777 goto done; 778 } 779 if (error) { 780 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 781 goto done; 782 } 783 printf(" drive %d: ready\n", xa->driveno); 784 785 /* now set format parameters */ 786 787 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 788 XDC_DONE(xdc, rqno, error); 789 if (error) { 790 aprint_error_dev(xd->sc_dev, "write format parameters failed: %s\n", 791 xdc_e2str(error)); 792 goto done; 793 } 794 795 /* get drive parameters */ 796 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 797 if (rqno != XD_ERR_FAIL) { 798 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 799 spt = driopb->sectpertrk; 800 } 801 XDC_DONE(xdc, rqno, error); 802 if (error) { 803 aprint_error_dev(xd->sc_dev, "read drive parameters failed: %s\n", 804 xdc_e2str(error)); 805 goto done; 806 } 807 808 /* 809 * now set drive parameters (to semi-bogus values) so we can read the 810 * disk label. 811 */ 812 xd->pcyl = xd->ncyl = 1; 813 xd->acyl = 0; 814 xd->nhead = 1; 815 xd->nsect = 1; 816 xd->sectpercyl = 1; 817 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 818 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 819 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 820 XDC_DONE(xdc, rqno, error); 821 if (error) { 822 aprint_error_dev(xd->sc_dev, "write drive parameters failed: %s\n", 823 xdc_e2str(error)); 824 goto done; 825 } 826 827 /* read disk label */ 828 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 829 XDC_DONE(xdc, rqno, error); 830 if (error) { 831 aprint_error_dev(xd->sc_dev, "reading disk label failed: %s\n", 832 xdc_e2str(error)); 833 goto done; 834 } 835 newstate = XD_DRIVE_NOLABEL; 836 837 xd->hw_spt = spt; 838 /* Attach the disk: must be before getdisklabel to malloc label */ 839 disk_init(&xd->sc_dk, device_xname(xd->sc_dev), &xddkdriver); 840 disk_attach(&xd->sc_dk); 841 842 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 843 goto done; 844 845 /* inform the user of what is up */ 846 printf("%s: <%s>, pcyl %d, hw_spt %d\n", device_xname(xd->sc_dev), 847 buf, xd->pcyl, spt); 848 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 849 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 850 device_xname(xd->sc_dev), mb, xd->ncyl, xd->nhead, xd->nsect, 851 XDFM_BPS); 852 853 /* now set the real drive parameters! */ 854 855 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 856 XDC_DONE(xdc, rqno, error); 857 if (error) { 858 aprint_error_dev(xd->sc_dev, "write real drive parameters failed: %s\n", 859 xdc_e2str(error)); 860 goto done; 861 } 862 newstate = XD_DRIVE_ONLINE; 863 864 /* 865 * read bad144 table. this table resides on the first sector of the 866 * last track of the disk (i.e. second cyl of "acyl" area). 867 */ 868 869 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 870 (xd->nhead - 1) * xd->nsect; /* last head */ 871 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 872 XDC_DONE(xdc, rqno, error); 873 if (error) { 874 aprint_error_dev(xd->sc_dev, "reading bad144 failed: %s\n", 875 xdc_e2str(error)); 876 goto done; 877 } 878 879 /* check dkbad for sanity */ 880 dkb = (struct dkbad *) buf; 881 for (lcv = 0; lcv < 126; lcv++) { 882 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 883 dkb->bt_bad[lcv].bt_cyl == 0) && 884 dkb->bt_bad[lcv].bt_trksec == 0xffff) 885 continue; /* blank */ 886 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 887 break; 888 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 889 break; 890 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 891 break; 892 } 893 if (lcv != 126) { 894 aprint_error_dev(xd->sc_dev, "warning: invalid bad144 sector!\n"); 895 } else { 896 memcpy(&xd->dkb, buf, XDFM_BPS); 897 } 898 899 done: 900 if (buf != NULL) { 901 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 902 &seg, rseg, XDFM_BPS, buf); 903 } 904 905 xd->state = newstate; 906 if (!xa->booting) { 907 wakeup(&xd->state); 908 splx(s); 909 } 910 } 911 912 /* 913 * end of autoconfig functions 914 */ 915 916 /* 917 * { b , c } d e v s w f u n c t i o n s 918 */ 919 920 /* 921 * xdclose: close device 922 */ 923 int 924 xdclose(dev_t dev, int flag, int fmt, struct lwp *l) 925 { 926 struct xd_softc *xd = device_lookup_private(&xd_cd, DISKUNIT(dev)); 927 int part = DISKPART(dev); 928 929 /* clear mask bits */ 930 931 switch (fmt) { 932 case S_IFCHR: 933 xd->sc_dk.dk_copenmask &= ~(1 << part); 934 break; 935 case S_IFBLK: 936 xd->sc_dk.dk_bopenmask &= ~(1 << part); 937 break; 938 } 939 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 940 941 return 0; 942 } 943 944 /* 945 * xddump: crash dump system 946 */ 947 int 948 xddump(dev_t dev, daddr_t blkno, void *va, size_t size) 949 { 950 int unit, part; 951 struct xd_softc *xd; 952 953 unit = DISKUNIT(dev); 954 part = DISKPART(dev); 955 956 xd = device_lookup_private(&xd_cd, unit); 957 if (!xd) 958 return ENXIO; 959 960 printf("%s%c: crash dump not supported (yet)\n", device_xname(xd->sc_dev), 961 'a' + part); 962 963 return ENXIO; 964 965 /* outline: globals: "dumplo" == sector number of partition to start 966 * dump at (convert to physical sector with partition table) 967 * "dumpsize" == size of dump in clicks "physmem" == size of physical 968 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 969 * physmem) 970 * 971 * dump a copy of physical memory to the dump device starting at sector 972 * "dumplo" in the swap partition (make sure > 0). map in pages as 973 * we go. use polled I/O. 974 * 975 * XXX how to handle NON_CONTIG? */ 976 977 } 978 979 static enum kauth_device_req 980 xd_getkauthreq(u_char cmd) 981 { 982 enum kauth_device_req req; 983 984 switch (cmd) { 985 case XDCMD_WR: 986 case XDCMD_XWR: 987 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITE; 988 break; 989 990 case XDCMD_RD: 991 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READ; 992 break; 993 994 case XDCMD_RDP: 995 case XDCMD_XRD: 996 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_READCONF; 997 break; 998 999 case XDCMD_WRP: 1000 case XDCMD_RST: 1001 req = KAUTH_REQ_DEVICE_RAWIO_PASSTHRU_WRITECONF; 1002 break; 1003 1004 case XDCMD_NOP: 1005 case XDCMD_SK: 1006 case XDCMD_TST: 1007 default: 1008 req = 0; 1009 break; 1010 } 1011 1012 return (req); 1013 } 1014 1015 /* 1016 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1017 */ 1018 int 1019 xdioctl(dev_t dev, u_long command, void *addr, int flag, struct lwp *l) 1020 1021 { 1022 struct xd_softc *xd; 1023 struct xd_iocmd *xio; 1024 int error, s, unit; 1025 #ifdef __HAVE_OLD_DISKLABEL 1026 struct disklabel newlabel; 1027 #endif 1028 struct disklabel *lp; 1029 1030 unit = DISKUNIT(dev); 1031 1032 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1033 return (ENXIO); 1034 1035 /* switch on ioctl type */ 1036 1037 switch (command) { 1038 case DIOCSBAD: /* set bad144 info */ 1039 if ((flag & FWRITE) == 0) 1040 return EBADF; 1041 s = splbio(); 1042 memcpy(&xd->dkb, addr, sizeof(xd->dkb)); 1043 splx(s); 1044 return 0; 1045 1046 case DIOCGDINFO: /* get disk label */ 1047 memcpy(addr, xd->sc_dk.dk_label, sizeof(struct disklabel)); 1048 return 0; 1049 #ifdef __HAVE_OLD_DISKLABEL 1050 case ODIOCGDINFO: 1051 newlabel = *(xd->sc_dk.dk_label); 1052 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1053 return ENOTTY; 1054 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1055 return 0; 1056 #endif 1057 1058 case DIOCGPART: /* get partition info */ 1059 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1060 ((struct partinfo *) addr)->part = 1061 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1062 return 0; 1063 1064 case DIOCSDINFO: /* set disk label */ 1065 #ifdef __HAVE_OLD_DISKLABEL 1066 case ODIOCSDINFO: 1067 if (command == ODIOCSDINFO) { 1068 memset(&newlabel, 0, sizeof newlabel); 1069 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1070 lp = &newlabel; 1071 } else 1072 #endif 1073 lp = (struct disklabel *)addr; 1074 1075 if ((flag & FWRITE) == 0) 1076 return EBADF; 1077 error = setdisklabel(xd->sc_dk.dk_label, 1078 lp, /* xd->sc_dk.dk_openmask : */ 0, 1079 xd->sc_dk.dk_cpulabel); 1080 if (error == 0) { 1081 if (xd->state == XD_DRIVE_NOLABEL) 1082 xd->state = XD_DRIVE_ONLINE; 1083 } 1084 return error; 1085 1086 case DIOCWLABEL: /* change write status of disk label */ 1087 if ((flag & FWRITE) == 0) 1088 return EBADF; 1089 if (*(int *) addr) 1090 xd->flags |= XD_WLABEL; 1091 else 1092 xd->flags &= ~XD_WLABEL; 1093 return 0; 1094 1095 case DIOCWDINFO: /* write disk label */ 1096 #ifdef __HAVE_OLD_DISKLABEL 1097 case ODIOCWDINFO: 1098 if (command == ODIOCWDINFO) { 1099 memset(&newlabel, 0, sizeof newlabel); 1100 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1101 lp = &newlabel; 1102 } else 1103 #endif 1104 lp = (struct disklabel *)addr; 1105 1106 if ((flag & FWRITE) == 0) 1107 return EBADF; 1108 error = setdisklabel(xd->sc_dk.dk_label, 1109 lp, /* xd->sc_dk.dk_openmask : */ 0, 1110 xd->sc_dk.dk_cpulabel); 1111 if (error == 0) { 1112 if (xd->state == XD_DRIVE_NOLABEL) 1113 xd->state = XD_DRIVE_ONLINE; 1114 1115 /* Simulate opening partition 0 so write succeeds. */ 1116 xd->sc_dk.dk_openmask |= (1 << 0); 1117 error = writedisklabel(MAKEDISKDEV(major(dev), 1118 DISKUNIT(dev), RAW_PART), 1119 xdstrategy, xd->sc_dk.dk_label, 1120 xd->sc_dk.dk_cpulabel); 1121 xd->sc_dk.dk_openmask = 1122 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1123 } 1124 return error; 1125 1126 case DIOSXDCMD: { 1127 enum kauth_device_req req; 1128 1129 xio = (struct xd_iocmd *) addr; 1130 req = xd_getkauthreq(xio->cmd); 1131 if ((error = kauth_authorize_device_passthru(l->l_cred, 1132 dev, req, xio)) != 0) 1133 return (error); 1134 return (xdc_ioctlcmd(xd, dev, xio)); 1135 } 1136 1137 default: 1138 return ENOTTY; 1139 } 1140 } 1141 /* 1142 * xdopen: open drive 1143 */ 1144 1145 int 1146 xdopen(dev_t dev, int flag, int fmt, struct lwp *l) 1147 { 1148 int unit, part; 1149 struct xd_softc *xd; 1150 struct xdc_attach_args xa; 1151 1152 /* first, could it be a valid target? */ 1153 1154 unit = DISKUNIT(dev); 1155 if ((xd = device_lookup_private(&xd_cd, unit)) == NULL) 1156 return (ENXIO); 1157 part = DISKPART(dev); 1158 1159 /* do we need to attach the drive? */ 1160 1161 if (xd->state == XD_DRIVE_UNKNOWN) { 1162 xa.driveno = xd->xd_drive; 1163 xa.fullmode = XD_SUB_WAIT; 1164 xa.booting = 0; 1165 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1166 if (xd->state == XD_DRIVE_UNKNOWN) { 1167 return (EIO); 1168 } 1169 } 1170 /* check for partition */ 1171 1172 if (part != RAW_PART && 1173 (part >= xd->sc_dk.dk_label->d_npartitions || 1174 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1175 return (ENXIO); 1176 } 1177 /* set open masks */ 1178 1179 switch (fmt) { 1180 case S_IFCHR: 1181 xd->sc_dk.dk_copenmask |= (1 << part); 1182 break; 1183 case S_IFBLK: 1184 xd->sc_dk.dk_bopenmask |= (1 << part); 1185 break; 1186 } 1187 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1188 1189 return 0; 1190 } 1191 1192 int 1193 xdread(dev_t dev, struct uio *uio, int flags) 1194 { 1195 1196 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1197 } 1198 1199 int 1200 xdwrite(dev_t dev, struct uio *uio, int flags) 1201 { 1202 1203 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1204 } 1205 1206 1207 /* 1208 * xdsize: return size of a partition for a dump 1209 */ 1210 1211 int 1212 xdsize(dev_t dev) 1213 { 1214 struct xd_softc *xdsc; 1215 int unit, part, size, omask; 1216 1217 /* valid unit? */ 1218 unit = DISKUNIT(dev); 1219 if ((xdsc = device_lookup_private(&xd_cd, unit)) == NULL) 1220 return (-1); 1221 1222 part = DISKPART(dev); 1223 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1224 1225 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1226 return (-1); 1227 1228 /* do it */ 1229 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1230 size = -1; /* only give valid size for swap partitions */ 1231 else 1232 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1233 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1234 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1235 return (-1); 1236 return (size); 1237 } 1238 /* 1239 * xdstrategy: buffering system interface to xd. 1240 */ 1241 1242 void 1243 xdstrategy(struct buf *bp) 1244 { 1245 struct xd_softc *xd; 1246 struct xdc_softc *parent; 1247 int s, unit; 1248 struct xdc_attach_args xa; 1249 1250 unit = DISKUNIT(bp->b_dev); 1251 1252 /* check for live device */ 1253 1254 if (!(xd = device_lookup_private(&xd_cd, unit)) || 1255 bp->b_blkno < 0 || 1256 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1257 bp->b_error = EINVAL; 1258 goto done; 1259 } 1260 /* do we need to attach the drive? */ 1261 1262 if (xd->state == XD_DRIVE_UNKNOWN) { 1263 xa.driveno = xd->xd_drive; 1264 xa.fullmode = XD_SUB_WAIT; 1265 xa.booting = 0; 1266 xdattach(xd->parent->sc_dev, xd->sc_dev, &xa); 1267 if (xd->state == XD_DRIVE_UNKNOWN) { 1268 bp->b_error = EIO; 1269 goto done; 1270 } 1271 } 1272 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1273 /* no I/O to unlabeled disks, unless raw partition */ 1274 bp->b_error = EIO; 1275 goto done; 1276 } 1277 /* short circuit zero length request */ 1278 1279 if (bp->b_bcount == 0) 1280 goto done; 1281 1282 /* check bounds with label (disksubr.c). Determine the size of the 1283 * transfer, and make sure it is within the boundaries of the 1284 * partition. Adjust transfer if needed, and signal errors or early 1285 * completion. */ 1286 1287 if (bounds_check_with_label(&xd->sc_dk, bp, 1288 (xd->flags & XD_WLABEL) != 0) <= 0) 1289 goto done; 1290 1291 /* 1292 * now we know we have a valid buf structure that we need to do I/O 1293 * on. 1294 * 1295 * note that we don't disksort because the controller has a sorting 1296 * algorithm built into the hardware. 1297 */ 1298 1299 s = splbio(); /* protect the queues */ 1300 1301 /* first, give jobs in front of us a chance */ 1302 parent = xd->parent; 1303 while (parent->nfree > 0 && bufq_peek(parent->sc_wq) != NULL) 1304 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1305 break; 1306 1307 /* if there are no free iorq's, then we just queue and return. the 1308 * buffs will get picked up later by xdcintr(). 1309 */ 1310 1311 if (parent->nfree == 0) { 1312 bufq_put(parent->sc_wq, bp); 1313 splx(s); 1314 return; 1315 } 1316 1317 /* now we have free iopb's and we are at splbio... start 'em up */ 1318 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1319 return; 1320 } 1321 1322 /* done! */ 1323 1324 splx(s); 1325 return; 1326 1327 done: /* tells upper layers we are done with this 1328 * buf */ 1329 bp->b_resid = bp->b_bcount; 1330 biodone(bp); 1331 } 1332 /* 1333 * end of {b,c}devsw functions 1334 */ 1335 1336 /* 1337 * i n t e r r u p t f u n c t i o n 1338 * 1339 * xdcintr: hardware interrupt. 1340 */ 1341 int 1342 xdcintr(void *v) 1343 { 1344 struct xdc_softc *xdcsc = v; 1345 1346 /* kick the event counter */ 1347 1348 xdcsc->sc_intrcnt.ev_count++; 1349 1350 /* remove as many done IOPBs as possible */ 1351 1352 xdc_remove_iorq(xdcsc); 1353 1354 /* start any iorq's already waiting */ 1355 1356 xdc_start(xdcsc, XDC_MAXIOPB); 1357 1358 /* fill up any remaining iorq's with queue'd buffers */ 1359 1360 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1361 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1362 break; 1363 1364 return (1); 1365 } 1366 /* 1367 * end of interrupt function 1368 */ 1369 1370 /* 1371 * i n t e r n a l f u n c t i o n s 1372 */ 1373 1374 /* 1375 * xdc_rqinit: fill out the fields of an I/O request 1376 */ 1377 1378 inline void 1379 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) 1380 { 1381 rq->xdc = xdc; 1382 rq->xd = xd; 1383 rq->ttl = XDC_MAXTTL + 10; 1384 rq->mode = md; 1385 rq->tries = rq->errnum = rq->lasterror = 0; 1386 rq->blockno = blk; 1387 rq->sectcnt = cnt; 1388 rq->dbuf = db; 1389 rq->buf = bp; 1390 } 1391 /* 1392 * xdc_rqtopb: load up an IOPB based on an iorq 1393 */ 1394 1395 void 1396 xdc_rqtopb(struct xd_iorq *iorq, struct xd_iopb *iopb, int cmd, int subfun) 1397 { 1398 u_long block, dp; 1399 1400 /* standard stuff */ 1401 1402 iopb->errs = iopb->done = 0; 1403 iopb->comm = cmd; 1404 iopb->errnum = iopb->status = 0; 1405 iopb->subfun = subfun; 1406 if (iorq->xd) 1407 iopb->unit = iorq->xd->xd_drive; 1408 else 1409 iopb->unit = 0; 1410 1411 /* check for alternate IOPB format */ 1412 1413 if (cmd == XDCMD_WRP) { 1414 switch (subfun) { 1415 case XDFUN_CTL:{ 1416 struct xd_iopb_ctrl *ctrl = 1417 (struct xd_iopb_ctrl *) iopb; 1418 iopb->lll = 0; 1419 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1420 ? 0 1421 : iorq->xdc->ipl; 1422 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1423 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1424 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1425 XDPC_RBC | XDPC_ECC2; 1426 ctrl->throttle = XDC_THROTTLE; 1427 ctrl->delay = XDC_DELAY; 1428 break; 1429 } 1430 case XDFUN_DRV:{ 1431 struct xd_iopb_drive *drv = 1432 (struct xd_iopb_drive *)iopb; 1433 /* we assume that the disk label has the right 1434 * info */ 1435 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1436 drv->dparam_ipl = (XDC_DPARAM << 3); 1437 else 1438 drv->dparam_ipl = (XDC_DPARAM << 3) | 1439 iorq->xdc->ipl; 1440 drv->maxsect = iorq->xd->nsect - 1; 1441 drv->maxsector = drv->maxsect; 1442 /* note: maxsector != maxsect only if you are 1443 * doing cyl sparing */ 1444 drv->headoff = 0; 1445 drv->maxcyl = iorq->xd->pcyl - 1; 1446 drv->maxhead = iorq->xd->nhead - 1; 1447 break; 1448 } 1449 case XDFUN_FMT:{ 1450 struct xd_iopb_format *form = 1451 (struct xd_iopb_format *) iopb; 1452 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1453 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1454 else 1455 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1456 iorq->xdc->ipl; 1457 form->field1 = XDFM_FIELD1; 1458 form->field2 = XDFM_FIELD2; 1459 form->field3 = XDFM_FIELD3; 1460 form->field4 = XDFM_FIELD4; 1461 form->bytespersec = XDFM_BPS; 1462 form->field6 = XDFM_FIELD6; 1463 form->field7 = XDFM_FIELD7; 1464 break; 1465 } 1466 } 1467 } else { 1468 1469 /* normal IOPB case (harmless to RDP command) */ 1470 1471 iopb->lll = 0; 1472 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1473 ? 0 1474 : iorq->xdc->ipl; 1475 iopb->sectcnt = iorq->sectcnt; 1476 block = iorq->blockno; 1477 if (iorq->xd == NULL || block == 0) { 1478 iopb->sectno = iopb->headno = iopb->cylno = 0; 1479 } else { 1480 iopb->sectno = block % iorq->xd->nsect; 1481 block = block / iorq->xd->nsect; 1482 iopb->headno = block % iorq->xd->nhead; 1483 block = block / iorq->xd->nhead; 1484 iopb->cylno = block; 1485 } 1486 dp = (u_long) iorq->dbuf; 1487 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1488 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1489 ? XDC_ADDRMOD32 1490 : XDC_ADDRMOD; 1491 } 1492 } 1493 1494 /* 1495 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1496 * If you've already got an IORQ, you can call submit directly (currently 1497 * there is no need to do this). NORM requests are handled separately. 1498 */ 1499 int 1500 xdc_cmd(struct xdc_softc *xdcsc, int cmd, int subfn, int unit, int block, 1501 int scnt, char *dptr, int fullmode) 1502 { 1503 int rqno, submode = XD_STATE(fullmode), retry; 1504 struct xd_iorq *iorq; 1505 struct xd_iopb *iopb; 1506 1507 /* get iorq/iopb */ 1508 switch (submode) { 1509 case XD_SUB_POLL: 1510 while (xdcsc->nfree == 0) { 1511 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1512 return (XD_ERR_FAIL); 1513 } 1514 break; 1515 case XD_SUB_WAIT: 1516 retry = 1; 1517 while (retry) { 1518 while (xdcsc->nfree == 0) { 1519 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1520 return (XD_ERR_FAIL); 1521 } 1522 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1523 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1524 return (XD_ERR_FAIL); 1525 } 1526 if (xdcsc->nfree) 1527 retry = 0; /* got it */ 1528 } 1529 break; 1530 default: 1531 return (XD_ERR_FAIL); /* illegal */ 1532 } 1533 if (xdcsc->nfree == 0) 1534 panic("xdcmd nfree"); 1535 rqno = XDC_RQALLOC(xdcsc); 1536 iorq = &xdcsc->reqs[rqno]; 1537 iopb = iorq->iopb; 1538 1539 1540 /* init iorq/iopb */ 1541 1542 xdc_rqinit(iorq, xdcsc, 1543 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1544 fullmode, block, scnt, dptr, NULL); 1545 1546 /* load IOPB from iorq */ 1547 1548 xdc_rqtopb(iorq, iopb, cmd, subfn); 1549 1550 /* submit it for processing */ 1551 1552 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1553 1554 return (rqno); 1555 } 1556 /* 1557 * xdc_startbuf 1558 * start a buffer running, assumes nfree > 0 1559 */ 1560 1561 int 1562 xdc_startbuf(struct xdc_softc *xdcsc, struct xd_softc *xdsc, struct buf *bp) 1563 { 1564 int rqno, partno; 1565 struct xd_iorq *iorq; 1566 struct xd_iopb *iopb; 1567 u_long block; 1568 /* void *dbuf;*/ 1569 int error; 1570 1571 if (!xdcsc->nfree) 1572 panic("xdc_startbuf free"); 1573 rqno = XDC_RQALLOC(xdcsc); 1574 iorq = &xdcsc->reqs[rqno]; 1575 iopb = iorq->iopb; 1576 1577 /* get buf */ 1578 1579 if (bp == NULL) { 1580 bp = bufq_get(xdcsc->sc_wq); 1581 if (bp == NULL) 1582 panic("xdc_startbuf bp"); 1583 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1584 } 1585 partno = DISKPART(bp->b_dev); 1586 #ifdef XDC_DEBUG 1587 printf("xdc_startbuf: %s%c: %s block %d\n", device_xname(xdsc->sc_dev), 1588 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1589 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1590 bp->b_bcount, bp->b_data); 1591 #endif 1592 1593 /* 1594 * load request. we have to calculate the correct block number based 1595 * on partition info. 1596 * 1597 * note that iorq points to the buffer as mapped into DVMA space, 1598 * where as the bp->b_data points to its non-DVMA mapping. 1599 */ 1600 1601 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1602 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1603 1604 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1605 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1606 if (error != 0) { 1607 aprint_error_dev(xdcsc->sc_dev, "warning: cannot load DMA map\n"); 1608 XDC_FREE(xdcsc, rqno); 1609 bufq_put(xdcsc->sc_wq, bp); 1610 return (XD_ERR_FAIL); /* XXX: need some sort of 1611 * call-back scheme here? */ 1612 } 1613 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1614 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1615 ? BUS_DMASYNC_PREREAD 1616 : BUS_DMASYNC_PREWRITE); 1617 1618 /* init iorq and load iopb from it */ 1619 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1620 bp->b_bcount / XDFM_BPS, 1621 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1622 bp); 1623 1624 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1625 1626 /* Instrumentation. */ 1627 disk_busy(&xdsc->sc_dk); 1628 1629 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1630 1631 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1632 return (XD_ERR_AOK); 1633 } 1634 1635 1636 /* 1637 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1638 * if ok. if it fail returns an error code. type is XD_SUB_*. 1639 * 1640 * note: caller frees iorq in all cases except NORM 1641 * 1642 * return value: 1643 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1644 * WAIT: XD_AOK (success), <error-code> (failed) 1645 * POLL: <same as WAIT> 1646 * NOQ : <same as NORM> 1647 * 1648 * there are three sources for i/o requests: 1649 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1650 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1651 * [3] open/ioctl: these are I/O requests done in the context of a process, 1652 * and the process should block until they are done. 1653 * 1654 * software state is stored in the iorq structure. each iorq has an 1655 * iopb structure. the hardware understands the iopb structure. 1656 * every command must go through an iopb. a 7053 can only handle 1657 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1658 * DVMA space at boot up time. what happens if we run out of iopb's? 1659 * for i/o type [1], the buffers are queued at the "buff" layer and 1660 * picked up later by the interrupt routine. for case [2] the 1661 * programmed i/o driver is called with a special flag that says 1662 * return when one iopb is free. for case [3] the process can sleep 1663 * on the iorq free list until some iopbs are available. 1664 */ 1665 1666 1667 int 1668 xdc_submit_iorq(struct xdc_softc *xdcsc, int iorqno, int type) 1669 { 1670 u_long iopbaddr; 1671 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1672 1673 #ifdef XDC_DEBUG 1674 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", device_xname(xdcsc->sc_dev), 1675 iorqno, type); 1676 #endif 1677 1678 /* first check and see if controller is busy */ 1679 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1680 #ifdef XDC_DEBUG 1681 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1682 #endif 1683 if (type == XD_SUB_NOQ) 1684 return (XD_ERR_FAIL); /* failed */ 1685 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1686 switch (type) { 1687 case XD_SUB_NORM: 1688 return XD_ERR_AOK; /* success */ 1689 case XD_SUB_WAIT: 1690 while (iorq->iopb->done == 0) { 1691 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1692 } 1693 return (iorq->errnum); 1694 case XD_SUB_POLL: 1695 return (xdc_piodriver(xdcsc, iorqno, 0)); 1696 default: 1697 panic("xdc_submit_iorq adding"); 1698 } 1699 } 1700 #ifdef XDC_DEBUG 1701 { 1702 u_char *rio = (u_char *) iorq->iopb; 1703 int sz = sizeof(struct xd_iopb), lcv; 1704 printf("%s: aio #%d [", 1705 device_xname(xdcsc->sc_dev), iorq - xdcsc->reqs); 1706 for (lcv = 0; lcv < sz; lcv++) 1707 printf(" %02x", rio[lcv]); 1708 printf("]\n"); 1709 } 1710 #endif /* XDC_DEBUG */ 1711 1712 /* controller not busy, start command */ 1713 iopbaddr = (u_long) iorq->dmaiopb; 1714 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1715 xdcsc->nrun++; 1716 /* command now running, wrap it up */ 1717 switch (type) { 1718 case XD_SUB_NORM: 1719 case XD_SUB_NOQ: 1720 return (XD_ERR_AOK); /* success */ 1721 case XD_SUB_WAIT: 1722 while (iorq->iopb->done == 0) { 1723 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1724 } 1725 return (iorq->errnum); 1726 case XD_SUB_POLL: 1727 return (xdc_piodriver(xdcsc, iorqno, 0)); 1728 default: 1729 panic("xdc_submit_iorq wrap up"); 1730 } 1731 panic("xdc_submit_iorq"); 1732 return 0; /* not reached */ 1733 } 1734 1735 1736 /* 1737 * xdc_piodriver 1738 * 1739 * programmed i/o driver. this function takes over the computer 1740 * and drains off all i/o requests. it returns the status of the iorq 1741 * the caller is interesting in. if freeone is true, then it returns 1742 * when there is a free iorq. 1743 */ 1744 int 1745 xdc_piodriver(struct xdc_softc *xdcsc, int iorqno, int freeone) 1746 { 1747 int nreset = 0; 1748 int retval = 0; 1749 u_long count; 1750 struct xdc *xdc = xdcsc->xdc; 1751 #ifdef XDC_DEBUG 1752 printf("xdc_piodriver(%s, %d, freeone=%d)\n", device_xname(xdcsc->sc_dev), 1753 iorqno, freeone); 1754 #endif 1755 1756 while (xdcsc->nwait || xdcsc->nrun) { 1757 #ifdef XDC_DEBUG 1758 printf("xdc_piodriver: wait=%d, run=%d\n", 1759 xdcsc->nwait, xdcsc->nrun); 1760 #endif 1761 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1762 #ifdef XDC_DEBUG 1763 printf("xdc_piodriver: done wait with count = %d\n", count); 1764 #endif 1765 /* we expect some progress soon */ 1766 if (count == 0 && nreset >= 2) { 1767 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1768 #ifdef XDC_DEBUG 1769 printf("xdc_piodriver: timeout\n"); 1770 #endif 1771 return (XD_ERR_FAIL); 1772 } 1773 if (count == 0) { 1774 if (xdc_reset(xdcsc, 0, 1775 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1776 XD_ERR_FAIL, 1777 0) == XD_ERR_FAIL) 1778 return (XD_ERR_FAIL); /* flushes all but POLL 1779 * requests, resets */ 1780 continue; 1781 } 1782 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1783 if (freeone) { 1784 if (xdcsc->nrun < XDC_MAXIOPB) { 1785 #ifdef XDC_DEBUG 1786 printf("xdc_piodriver: done: one free\n"); 1787 #endif 1788 return (XD_ERR_AOK); 1789 } 1790 continue; /* don't xdc_start */ 1791 } 1792 xdc_start(xdcsc, XDC_MAXIOPB); 1793 } 1794 1795 /* get return value */ 1796 1797 retval = xdcsc->reqs[iorqno].errnum; 1798 1799 #ifdef XDC_DEBUG 1800 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1801 xdcsc->reqs[iorqno].errnum, xdc_e2str(xdcsc->reqs[iorqno].errnum)); 1802 #endif 1803 1804 /* now that we've drained everything, start up any bufs that have 1805 * queued */ 1806 1807 while (xdcsc->nfree > 0 && bufq_peek(xdcsc->sc_wq) != NULL) 1808 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1809 break; 1810 1811 return (retval); 1812 } 1813 1814 /* 1815 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1816 * we steal iopb[0] for this, but we put it back when we are done. 1817 */ 1818 void 1819 xdc_xdreset(struct xdc_softc *xdcsc, struct xd_softc *xdsc) 1820 { 1821 struct xd_iopb tmpiopb; 1822 u_long addr; 1823 int del; 1824 memcpy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1825 memset(xdcsc->iopbase, 0, sizeof(tmpiopb)); 1826 xdcsc->iopbase->comm = XDCMD_RST; 1827 xdcsc->iopbase->unit = xdsc->xd_drive; 1828 addr = (u_long) xdcsc->dvmaiopb; 1829 XDC_GO(xdcsc->xdc, addr); /* go! */ 1830 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1831 if (del <= 0 || xdcsc->iopbase->errs) { 1832 printf("%s: off-line: %s\n", device_xname(xdcsc->sc_dev), 1833 xdc_e2str(xdcsc->iopbase->errnum)); 1834 xdcsc->xdc->xdc_csr = XDC_RESET; 1835 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1836 if (del <= 0) 1837 panic("xdc_reset"); 1838 } else { 1839 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1840 } 1841 memcpy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1842 } 1843 1844 1845 /* 1846 * xdc_reset: reset everything: requests are marked as errors except 1847 * a polled request (which is resubmitted) 1848 */ 1849 int 1850 xdc_reset(struct xdc_softc *xdcsc, int quiet, int blastmode, int error, 1851 struct xd_softc *xdsc) 1852 1853 { 1854 int del = 0, lcv, retval = XD_ERR_AOK; 1855 int oldfree = xdcsc->nfree; 1856 1857 /* soft reset hardware */ 1858 1859 if (!quiet) 1860 printf("%s: soft reset\n", device_xname(xdcsc->sc_dev)); 1861 xdcsc->xdc->xdc_csr = XDC_RESET; 1862 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1863 if (del <= 0) { 1864 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1865 retval = XD_ERR_FAIL; 1866 } 1867 if (xdsc) 1868 xdc_xdreset(xdcsc, xdsc); 1869 1870 /* fix queues based on "blast-mode" */ 1871 1872 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1873 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1874 1875 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1876 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1877 XD_STATE(iorq->mode) != XD_SUB_NORM) 1878 /* is it active? */ 1879 continue; 1880 1881 xdcsc->nrun--; /* it isn't running any more */ 1882 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1883 /* failed */ 1884 iorq->errnum = error; 1885 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1886 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1887 case XD_SUB_NORM: 1888 iorq->buf->b_error = EIO; 1889 iorq->buf->b_resid = 1890 iorq->sectcnt * XDFM_BPS; 1891 1892 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1893 iorq->dmamap->dm_mapsize, 1894 (iorq->buf->b_flags & B_READ) 1895 ? BUS_DMASYNC_POSTREAD 1896 : BUS_DMASYNC_POSTWRITE); 1897 1898 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1899 1900 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1901 (xdcsc->reqs[lcv].buf->b_bcount - 1902 xdcsc->reqs[lcv].buf->b_resid), 1903 (iorq->buf->b_flags & B_READ)); 1904 biodone(iorq->buf); 1905 XDC_FREE(xdcsc, lcv); /* add to free list */ 1906 break; 1907 case XD_SUB_WAIT: 1908 wakeup(iorq); 1909 case XD_SUB_POLL: 1910 xdcsc->ndone++; 1911 iorq->mode = 1912 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1913 break; 1914 } 1915 1916 } else { 1917 1918 /* resubmit, put at front of wait queue */ 1919 XDC_HWAIT(xdcsc, lcv); 1920 } 1921 } 1922 1923 /* 1924 * now, if stuff is waiting, start it. 1925 * since we just reset it should go 1926 */ 1927 xdc_start(xdcsc, XDC_MAXIOPB); 1928 1929 /* ok, we did it */ 1930 if (oldfree == 0 && xdcsc->nfree) 1931 wakeup(&xdcsc->nfree); 1932 1933 #ifdef XDC_DIAG 1934 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1935 if (del != XDC_MAXIOPB) 1936 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1937 device_xname(xdcsc->sc_dev), del, XDC_MAXIOPB); 1938 else 1939 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1940 printf("%s: diag: lots of done jobs (%d)\n", 1941 device_xname(xdcsc->sc_dev), xdcsc->ndone); 1942 #endif 1943 printf("RESET DONE\n"); 1944 return (retval); 1945 } 1946 /* 1947 * xdc_start: start all waiting buffers 1948 */ 1949 1950 void 1951 xdc_start(struct xdc_softc *xdcsc, int maxio) 1952 1953 { 1954 int rqno; 1955 while (maxio && xdcsc->nwait && 1956 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1957 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1958 * param */ 1959 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 1960 panic("xdc_start"); /* should never happen */ 1961 maxio--; 1962 } 1963 } 1964 /* 1965 * xdc_remove_iorq: remove "done" IOPB's. 1966 */ 1967 1968 int 1969 xdc_remove_iorq(struct xdc_softc *xdcsc) 1970 { 1971 int errnum, rqno, comm, errs; 1972 struct xdc *xdc = xdcsc->xdc; 1973 struct xd_iopb *iopb; 1974 struct xd_iorq *iorq; 1975 struct buf *bp; 1976 1977 if (xdc->xdc_csr & XDC_F_ERROR) { 1978 /* 1979 * FATAL ERROR: should never happen under normal use. This 1980 * error is so bad, you can't even tell which IOPB is bad, so 1981 * we dump them all. 1982 */ 1983 errnum = xdc->xdc_f_err; 1984 aprint_error_dev(xdcsc->sc_dev, "fatal error 0x%02x: %s\n", 1985 errnum, xdc_e2str(errnum)); 1986 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errnum, 0) != XD_ERR_AOK) { 1987 aprint_error_dev(xdcsc->sc_dev, "soft reset failed!\n"); 1988 panic("xdc_remove_iorq: controller DEAD"); 1989 } 1990 return (XD_ERR_AOK); 1991 } 1992 1993 /* 1994 * get iopb that is done 1995 * 1996 * hmm... I used to read the address of the done IOPB off the VME 1997 * registers and calculate the rqno directly from that. that worked 1998 * until I started putting a load on the controller. when loaded, i 1999 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2000 * be set, even after DELAY'ing a while! later on the timeout 2001 * routine would detect IOPBs that were marked "running" but their 2002 * "done" bit was set. rather than dealing directly with this 2003 * problem, it is just easier to look at all running IOPB's for the 2004 * done bit. 2005 */ 2006 if (xdc->xdc_csr & XDC_REMIOPB) { 2007 xdc->xdc_csr = XDC_CLRRIO; 2008 } 2009 2010 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2011 iorq = &xdcsc->reqs[rqno]; 2012 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2013 continue; /* free, or done */ 2014 iopb = &xdcsc->iopbase[rqno]; 2015 if (iopb->done == 0) 2016 continue; /* not done yet */ 2017 2018 #ifdef XDC_DEBUG 2019 { 2020 u_char *rio = (u_char *) iopb; 2021 int sz = sizeof(struct xd_iopb), lcv; 2022 printf("%s: rio #%d [", device_xname(xdcsc->sc_dev), rqno); 2023 for (lcv = 0; lcv < sz; lcv++) 2024 printf(" %02x", rio[lcv]); 2025 printf("]\n"); 2026 } 2027 #endif /* XDC_DEBUG */ 2028 2029 xdcsc->nrun--; 2030 2031 comm = iopb->comm; 2032 errs = iopb->errs; 2033 2034 if (errs) 2035 iorq->errnum = iopb->errnum; 2036 else 2037 iorq->errnum = 0; 2038 2039 /* handle non-fatal errors */ 2040 2041 if (errs && 2042 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2043 continue; /* AOK: we resubmitted it */ 2044 2045 2046 /* this iorq is now done (hasn't been restarted or anything) */ 2047 2048 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2049 xdc_perror(iorq, iopb, 0); 2050 2051 /* now, if read/write check to make sure we got all the data 2052 * we needed. (this may not be the case if we got an error in 2053 * the middle of a multisector request). */ 2054 2055 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2056 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2057 /* we just successfully processed a bad144 sector 2058 * note: if we are in bad 144 mode, the pointers have 2059 * been advanced already (see above) and are pointing 2060 * at the bad144 sector. to exit bad144 mode, we 2061 * must advance the pointers 1 sector and issue a new 2062 * request if there are still sectors left to process 2063 * 2064 */ 2065 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2066 2067 /* exit b144 mode */ 2068 iorq->mode = iorq->mode & (~XD_MODE_B144); 2069 2070 if (iorq->sectcnt) { /* more to go! */ 2071 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 2072 iopb->errs = iopb->done = 0; 2073 iorq->tries = 0; 2074 iopb->sectcnt = iorq->sectcnt; 2075 iopb->cylno = iorq->blockno / 2076 iorq->xd->sectpercyl; 2077 iopb->headno = 2078 (iorq->blockno / iorq->xd->nhead) % 2079 iorq->xd->nhead; 2080 iopb->sectno = iorq->blockno % XDFM_BPS; 2081 iopb->daddr = (u_long) iorq->dbuf; 2082 XDC_HWAIT(xdcsc, rqno); 2083 xdc_start(xdcsc, 1); /* resubmit */ 2084 continue; 2085 } 2086 } 2087 /* final cleanup, totally done with this request */ 2088 2089 switch (XD_STATE(iorq->mode)) { 2090 case XD_SUB_NORM: 2091 bp = iorq->buf; 2092 if (errs) { 2093 bp->b_error = EIO; 2094 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2095 } else { 2096 bp->b_resid = 0; /* done */ 2097 } 2098 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2099 iorq->dmamap->dm_mapsize, 2100 (bp->b_flags & B_READ) 2101 ? BUS_DMASYNC_POSTREAD 2102 : BUS_DMASYNC_POSTWRITE); 2103 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2104 2105 disk_unbusy(&iorq->xd->sc_dk, 2106 (bp->b_bcount - bp->b_resid), 2107 (bp->b_flags & B_READ)); 2108 XDC_FREE(xdcsc, rqno); 2109 biodone(bp); 2110 break; 2111 case XD_SUB_WAIT: 2112 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2113 xdcsc->ndone++; 2114 wakeup(iorq); 2115 break; 2116 case XD_SUB_POLL: 2117 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2118 xdcsc->ndone++; 2119 break; 2120 } 2121 } 2122 2123 return (XD_ERR_AOK); 2124 } 2125 2126 /* 2127 * xdc_perror: print error. 2128 * - if still_trying is true: we got an error, retried and got a 2129 * different error. in that case lasterror is the old error, 2130 * and errnum is the new one. 2131 * - if still_trying is not true, then if we ever had an error it 2132 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2133 * from that error (otherwise iorq->errnum == iorq->lasterror). 2134 */ 2135 void 2136 xdc_perror(struct xd_iorq *iorq, struct xd_iopb *iopb, int still_trying) 2137 2138 { 2139 2140 int error = iorq->lasterror; 2141 2142 printf("%s", (iorq->xd) ? device_xname(iorq->xd->sc_dev) 2143 : device_xname(iorq->xdc->sc_dev)); 2144 if (iorq->buf) 2145 printf("%c: ", 'a' + (char)DISKPART(iorq->buf->b_dev)); 2146 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2147 printf("%s %d/%d/%d: ", 2148 (iopb->comm == XDCMD_RD) ? "read" : "write", 2149 iopb->cylno, iopb->headno, iopb->sectno); 2150 printf("%s", xdc_e2str(error)); 2151 2152 if (still_trying) 2153 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errnum)); 2154 else 2155 if (iorq->errnum == 0) 2156 printf(" [recovered in %d tries]", iorq->tries); 2157 2158 printf("\n"); 2159 } 2160 2161 /* 2162 * xdc_error: non-fatal error encountered... recover. 2163 * return AOK if resubmitted, return FAIL if this iopb is done 2164 */ 2165 int 2166 xdc_error(struct xdc_softc *xdcsc, struct xd_iorq *iorq, struct xd_iopb *iopb, 2167 int rqno, int comm) 2168 2169 { 2170 int errnum = iorq->errnum; 2171 int erract = errnum & XD_ERA_MASK; 2172 int oldmode, advance; 2173 #ifdef __sparc__ 2174 int i; 2175 #endif 2176 2177 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2178 oldmode = iorq->mode; 2179 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2180 xdcsc->ndone++; 2181 /* make xdc_start ignore us */ 2182 xdc_reset(xdcsc, 1, XD_RSET_NONE, errnum, iorq->xd); 2183 iorq->mode = oldmode; 2184 xdcsc->ndone--; 2185 } 2186 /* check for read/write to a sector in bad144 table if bad: redirect 2187 * request to bad144 area */ 2188 2189 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2190 (iorq->mode & XD_MODE_B144) == 0) { 2191 advance = iorq->sectcnt - iopb->sectcnt; 2192 XDC_ADVANCE(iorq, advance); 2193 #ifdef __sparc__ 2194 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2195 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2196 iorq->blockno % iorq->xd->nsect)) != -1) { 2197 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2198 * redirect */ 2199 iopb->errnum = iopb->done = iopb->errs = 0; 2200 iopb->sectcnt = 1; 2201 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2202 /* second to last acyl */ 2203 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2204 * standard */ 2205 iopb->headno = i / iorq->xd->nhead; 2206 iopb->sectno = i % iorq->xd->nhead; 2207 XDC_HWAIT(xdcsc, rqno); 2208 xdc_start(xdcsc, 1); /* resubmit */ 2209 return (XD_ERR_AOK); /* recovered! */ 2210 } 2211 #endif 2212 } 2213 2214 /* 2215 * it isn't a bad144 sector, must be real error! see if we can retry 2216 * it? 2217 */ 2218 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2219 xdc_perror(iorq, iopb, 1); /* inform of error state 2220 * change */ 2221 iorq->lasterror = errnum; 2222 2223 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2224 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2225 iorq->tries++; 2226 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2227 XDC_HWAIT(xdcsc, rqno); 2228 xdc_start(xdcsc, 1); /* restart */ 2229 return (XD_ERR_AOK); /* recovered! */ 2230 } 2231 2232 /* failed to recover from this error */ 2233 return (XD_ERR_FAIL); 2234 } 2235 2236 /* 2237 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2238 */ 2239 void 2240 xdc_tick(void *arg) 2241 2242 { 2243 struct xdc_softc *xdcsc = arg; 2244 int lcv, s, reset = 0; 2245 #ifdef XDC_DIAG 2246 int nwait, nrun, nfree, ndone, whd = 0; 2247 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2248 s = splbio(); 2249 nwait = xdcsc->nwait; 2250 nrun = xdcsc->nrun; 2251 nfree = xdcsc->nfree; 2252 ndone = xdcsc->ndone; 2253 memcpy(wqc, xdcsc->waitq, sizeof(wqc)); 2254 memcpy(fqc, xdcsc->freereq, sizeof(fqc)); 2255 splx(s); 2256 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2257 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2258 device_xname(xdcsc->sc_dev), nwait, nfree, nrun, ndone, 2259 XDC_MAXIOPB); 2260 memset(mark, 0, sizeof(mark)); 2261 printf("FREE: "); 2262 for (lcv = nfree; lcv > 0; lcv--) { 2263 printf("%d ", fqc[lcv - 1]); 2264 mark[fqc[lcv - 1]] = 1; 2265 } 2266 printf("\nWAIT: "); 2267 lcv = nwait; 2268 while (lcv > 0) { 2269 printf("%d ", wqc[whd]); 2270 mark[wqc[whd]] = 1; 2271 whd = (whd + 1) % XDC_MAXIOPB; 2272 lcv--; 2273 } 2274 printf("\n"); 2275 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2276 if (mark[lcv] == 0) 2277 printf("MARK: running %d: mode %d done %d errs %d errnum 0x%x ttl %d buf %p\n", 2278 lcv, xdcsc->reqs[lcv].mode, 2279 xdcsc->iopbase[lcv].done, 2280 xdcsc->iopbase[lcv].errs, 2281 xdcsc->iopbase[lcv].errnum, 2282 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2283 } 2284 } else 2285 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2286 printf("%s: diag: lots of done jobs (%d)\n", 2287 device_xname(xdcsc->sc_dev), ndone); 2288 2289 #endif 2290 #ifdef XDC_DEBUG 2291 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2292 device_xname(xdcsc->sc_dev), 2293 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2294 xdcsc->ndone); 2295 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2296 if (xdcsc->reqs[lcv].mode) 2297 printf("running %d: mode %d done %d errs %d errnum 0x%x\n", 2298 lcv, 2299 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2300 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errnum); 2301 } 2302 #endif 2303 2304 /* reduce ttl for each request if one goes to zero, reset xdc */ 2305 s = splbio(); 2306 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2307 if (xdcsc->reqs[lcv].mode == 0 || 2308 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2309 continue; 2310 xdcsc->reqs[lcv].ttl--; 2311 if (xdcsc->reqs[lcv].ttl == 0) 2312 reset = 1; 2313 } 2314 if (reset) { 2315 printf("%s: watchdog timeout\n", device_xname(xdcsc->sc_dev)); 2316 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2317 } 2318 splx(s); 2319 2320 /* until next time */ 2321 2322 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2323 } 2324 2325 /* 2326 * xdc_ioctlcmd: this function provides a user level interface to the 2327 * controller via ioctl. this allows "format" programs to be written 2328 * in user code, and is also useful for some debugging. we return 2329 * an error code. called at user priority. 2330 */ 2331 int 2332 xdc_ioctlcmd(struct xd_softc *xd, dev_t dev, struct xd_iocmd *xio) 2333 2334 { 2335 int s, rqno, dummy; 2336 char *dvmabuf = NULL, *buf = NULL; 2337 struct xdc_softc *xdcsc; 2338 int rseg, error; 2339 bus_dma_segment_t seg; 2340 2341 /* check sanity of requested command */ 2342 2343 switch (xio->cmd) { 2344 2345 case XDCMD_NOP: /* no op: everything should be zero */ 2346 if (xio->subfn || xio->dptr || xio->dlen || 2347 xio->block || xio->sectcnt) 2348 return (EINVAL); 2349 break; 2350 2351 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2352 case XDCMD_WR: 2353 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2354 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2355 return (EINVAL); 2356 break; 2357 2358 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2359 return (EINVAL); 2360 2361 case XDCMD_WRP: /* write parameters */ 2362 return (EINVAL);/* not useful, except maybe drive 2363 * parameters... but drive parameters should 2364 * go via disklabel changes */ 2365 2366 case XDCMD_RDP: /* read parameters */ 2367 if (xio->subfn != XDFUN_DRV || 2368 xio->dlen || xio->block || xio->dptr) 2369 return (EINVAL); /* allow read drive params to 2370 * get hw_spt */ 2371 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2372 return (0); 2373 break; 2374 2375 case XDCMD_XRD: /* extended read/write */ 2376 case XDCMD_XWR: 2377 2378 switch (xio->subfn) { 2379 2380 case XDFUN_THD:/* track headers */ 2381 if (xio->sectcnt != xd->hw_spt || 2382 (xio->block % xd->nsect) != 0 || 2383 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2384 xio->dptr == NULL) 2385 return (EINVAL); 2386 xio->sectcnt = 0; 2387 break; 2388 2389 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2390 if (xio->cmd == XDCMD_XRD) 2391 return (EINVAL); /* no XDFUN_VFY */ 2392 if (xio->sectcnt || xio->dlen || 2393 (xio->block % xd->nsect) != 0 || xio->dptr) 2394 return (EINVAL); 2395 break; 2396 2397 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2398 return (EINVAL); /* not yet */ 2399 2400 case XDFUN_DM: /* defect map */ 2401 case XDFUN_DMX:/* defect map (alternate location) */ 2402 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2403 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2404 return (EINVAL); 2405 break; 2406 2407 default: 2408 return (EINVAL); 2409 } 2410 break; 2411 2412 case XDCMD_TST: /* diagnostics */ 2413 return (EINVAL); 2414 2415 default: 2416 return (EINVAL);/* ??? */ 2417 } 2418 2419 xdcsc = xd->parent; 2420 2421 /* create DVMA buffer for request if needed */ 2422 if (xio->dlen) { 2423 bus_addr_t busbuf; 2424 2425 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2426 &seg, &rseg, 2427 xio->dlen, (void **)&buf, 2428 &busbuf)) != 0) { 2429 return (error); 2430 } 2431 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2432 2433 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2434 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2435 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2436 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2437 return (error); 2438 } 2439 } 2440 } 2441 2442 /* do it! */ 2443 2444 error = 0; 2445 s = splbio(); 2446 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2447 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2448 if (rqno == XD_ERR_FAIL) { 2449 error = EIO; 2450 goto done; 2451 } 2452 xio->errnum = xdcsc->reqs[rqno].errnum; 2453 xio->tries = xdcsc->reqs[rqno].tries; 2454 XDC_DONE(xdcsc, rqno, dummy); 2455 __USE(dummy); 2456 2457 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2458 error = copyout(buf, xio->dptr, xio->dlen); 2459 2460 done: 2461 splx(s); 2462 if (dvmabuf) { 2463 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2464 xio->dlen, buf); 2465 } 2466 return (error); 2467 } 2468 2469 /* 2470 * xdc_e2str: convert error code number into an error string 2471 */ 2472 const char * 2473 xdc_e2str(int no) 2474 { 2475 switch (no) { 2476 case XD_ERR_FAIL: 2477 return ("Software fatal error"); 2478 case XD_ERR_AOK: 2479 return ("Successful completion"); 2480 case XD_ERR_ICYL: 2481 return ("Illegal cylinder address"); 2482 case XD_ERR_IHD: 2483 return ("Illegal head address"); 2484 case XD_ERR_ISEC: 2485 return ("Illgal sector address"); 2486 case XD_ERR_CZER: 2487 return ("Count zero"); 2488 case XD_ERR_UIMP: 2489 return ("Unimplemented command"); 2490 case XD_ERR_IF1: 2491 return ("Illegal field length 1"); 2492 case XD_ERR_IF2: 2493 return ("Illegal field length 2"); 2494 case XD_ERR_IF3: 2495 return ("Illegal field length 3"); 2496 case XD_ERR_IF4: 2497 return ("Illegal field length 4"); 2498 case XD_ERR_IF5: 2499 return ("Illegal field length 5"); 2500 case XD_ERR_IF6: 2501 return ("Illegal field length 6"); 2502 case XD_ERR_IF7: 2503 return ("Illegal field length 7"); 2504 case XD_ERR_ISG: 2505 return ("Illegal scatter/gather length"); 2506 case XD_ERR_ISPT: 2507 return ("Not enough sectors per track"); 2508 case XD_ERR_ALGN: 2509 return ("Next IOPB address alignment error"); 2510 case XD_ERR_SGAL: 2511 return ("Scatter/gather address alignment error"); 2512 case XD_ERR_SGEC: 2513 return ("Scatter/gather with auto-ECC"); 2514 case XD_ERR_SECC: 2515 return ("Soft ECC corrected"); 2516 case XD_ERR_SIGN: 2517 return ("ECC ignored"); 2518 case XD_ERR_ASEK: 2519 return ("Auto-seek retry recovered"); 2520 case XD_ERR_RTRY: 2521 return ("Soft retry recovered"); 2522 case XD_ERR_HECC: 2523 return ("Hard data ECC"); 2524 case XD_ERR_NHDR: 2525 return ("Header not found"); 2526 case XD_ERR_NRDY: 2527 return ("Drive not ready"); 2528 case XD_ERR_TOUT: 2529 return ("Operation timeout"); 2530 case XD_ERR_VTIM: 2531 return ("VMEDMA timeout"); 2532 case XD_ERR_DSEQ: 2533 return ("Disk sequencer error"); 2534 case XD_ERR_HDEC: 2535 return ("Header ECC error"); 2536 case XD_ERR_RVFY: 2537 return ("Read verify"); 2538 case XD_ERR_VFER: 2539 return ("Fatail VMEDMA error"); 2540 case XD_ERR_VBUS: 2541 return ("VMEbus error"); 2542 case XD_ERR_DFLT: 2543 return ("Drive faulted"); 2544 case XD_ERR_HECY: 2545 return ("Header error/cyliner"); 2546 case XD_ERR_HEHD: 2547 return ("Header error/head"); 2548 case XD_ERR_NOCY: 2549 return ("Drive not on-cylinder"); 2550 case XD_ERR_SEEK: 2551 return ("Seek error"); 2552 case XD_ERR_ILSS: 2553 return ("Illegal sector size"); 2554 case XD_ERR_SEC: 2555 return ("Soft ECC"); 2556 case XD_ERR_WPER: 2557 return ("Write-protect error"); 2558 case XD_ERR_IRAM: 2559 return ("IRAM self test failure"); 2560 case XD_ERR_MT3: 2561 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2562 case XD_ERR_MT4: 2563 return ("Maintenance test 4 failure (header shift reg)"); 2564 case XD_ERR_MT5: 2565 return ("Maintenance test 5 failure (VMEDMA regs)"); 2566 case XD_ERR_MT6: 2567 return ("Maintenance test 6 failure (REGCEL chip)"); 2568 case XD_ERR_MT7: 2569 return ("Maintenance test 7 failure (buffer parity)"); 2570 case XD_ERR_MT8: 2571 return ("Maintenance test 8 failure (disk FIFO)"); 2572 case XD_ERR_IOCK: 2573 return ("IOPB checksum miscompare"); 2574 case XD_ERR_IODM: 2575 return ("IOPB DMA fatal"); 2576 case XD_ERR_IOAL: 2577 return ("IOPB address alignment error"); 2578 case XD_ERR_FIRM: 2579 return ("Firmware error"); 2580 case XD_ERR_MMOD: 2581 return ("Illegal maintenance mode test number"); 2582 case XD_ERR_ACFL: 2583 return ("ACFAIL asserted"); 2584 default: 2585 return ("Unknown error"); 2586 } 2587 } 2588