xd.c revision 1.50
1 /* $NetBSD: xd.c,v 1.50 2003/06/29 09:56:31 darrenr Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1995 Charles D. Cranor 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Charles D. Cranor. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 36 * 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 37 * 38 * author: Chuck Cranor <chuck (at) ccrc.wustl.edu> 39 * started: 27-Feb-95 40 * references: [1] Xylogics Model 753 User's Manual 41 * part number: 166-753-001, Revision B, May 21, 1988. 42 * "Your Partner For Performance" 43 * [2] other NetBSD disk device drivers 44 * 45 * Special thanks go to Scott E. Campbell of Xylogics, Inc. for taking 46 * the time to answer some of my questions about the 753/7053. 47 * 48 * note: the 753 and the 7053 are programmed the same way, but are 49 * different sizes. the 753 is a 6U VME card, while the 7053 is a 9U 50 * VME card (found in many VME based suns). 51 */ 52 53 #include <sys/cdefs.h> 54 __KERNEL_RCSID(0, "$NetBSD: xd.c,v 1.50 2003/06/29 09:56:31 darrenr Exp $"); 55 56 #undef XDC_DEBUG /* full debug */ 57 #define XDC_DIAG /* extra sanity checks */ 58 #if defined(DIAGNOSTIC) && !defined(XDC_DIAG) 59 #define XDC_DIAG /* link in with master DIAG option */ 60 #endif 61 62 #include <sys/param.h> 63 #include <sys/proc.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/file.h> 67 #include <sys/stat.h> 68 #include <sys/ioctl.h> 69 #include <sys/buf.h> 70 #include <sys/uio.h> 71 #include <sys/malloc.h> 72 #include <sys/device.h> 73 #include <sys/disklabel.h> 74 #include <sys/disk.h> 75 #include <sys/syslog.h> 76 #include <sys/dkbad.h> 77 #include <sys/conf.h> 78 79 #include <machine/bus.h> 80 #include <machine/intr.h> 81 82 #if defined(__sparc__) || defined(sun3) 83 #include <dev/sun/disklabel.h> 84 #endif 85 86 #include <dev/vme/vmereg.h> 87 #include <dev/vme/vmevar.h> 88 89 #include <dev/vme/xdreg.h> 90 #include <dev/vme/xdvar.h> 91 #include <dev/vme/xio.h> 92 93 #include "locators.h" 94 95 /* 96 * macros 97 */ 98 99 /* 100 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 101 */ 102 #define XDC_TWAIT(SC, N) { \ 103 (SC)->waitq[(SC)->waitend] = (N); \ 104 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 105 (SC)->nwait++; \ 106 } 107 108 /* 109 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 110 */ 111 #define XDC_HWAIT(SC, N) { \ 112 (SC)->waithead = ((SC)->waithead == 0) ? \ 113 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 114 (SC)->waitq[(SC)->waithead] = (N); \ 115 (SC)->nwait++; \ 116 } 117 118 /* 119 * XDC_GET_WAITER: gets the first request waiting on the waitq 120 * and removes it (so it can be submitted) 121 */ 122 #define XDC_GET_WAITER(XDCSC, RQ) { \ 123 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 124 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 125 xdcsc->nwait--; \ 126 } 127 128 /* 129 * XDC_FREE: add iorq "N" to SC's free list 130 */ 131 #define XDC_FREE(SC, N) { \ 132 (SC)->freereq[(SC)->nfree++] = (N); \ 133 (SC)->reqs[N].mode = 0; \ 134 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 135 } 136 137 138 /* 139 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 140 */ 141 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 142 143 /* 144 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 145 */ 146 #define XDC_GO(XDC, ADDR) { \ 147 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 148 (ADDR) = ((ADDR) >> 8); \ 149 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 150 (ADDR) = ((ADDR) >> 8); \ 151 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 152 (ADDR) = ((ADDR) >> 8); \ 153 (XDC)->xdc_iopbaddr3 = (ADDR); \ 154 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 155 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 156 } 157 158 /* 159 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 160 * LCV is a counter. If it goes to zero then we timed out. 161 */ 162 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 163 (LCV) = (TIME); \ 164 while ((LCV) > 0) { \ 165 if ((XDC)->xdc_csr & (BITS)) break; \ 166 (LCV) = (LCV) - 1; \ 167 DELAY(1); \ 168 } \ 169 } 170 171 /* 172 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 173 */ 174 #define XDC_DONE(SC,RQ,ER) { \ 175 if ((RQ) == XD_ERR_FAIL) { \ 176 (ER) = (RQ); \ 177 } else { \ 178 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 179 wakeup(&(SC)->ndone); \ 180 (ER) = (SC)->reqs[RQ].errno; \ 181 XDC_FREE((SC), (RQ)); \ 182 } \ 183 } 184 185 /* 186 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 187 */ 188 #define XDC_ADVANCE(IORQ, N) { \ 189 if (N) { \ 190 (IORQ)->sectcnt -= (N); \ 191 (IORQ)->blockno += (N); \ 192 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 193 } \ 194 } 195 196 /* 197 * note - addresses you can sleep on: 198 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 199 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 200 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 201 * to drop below XDC_SUBWAITLIM) 202 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 203 */ 204 205 206 /* 207 * function prototypes 208 * "xdc_*" functions are internal, all others are external interfaces 209 */ 210 211 extern int pil_to_vme[]; /* from obio.c */ 212 213 /* internals */ 214 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 215 char *xdc_e2str __P((int)); 216 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 217 struct xd_iopb *, int, int)); 218 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 219 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 220 int xdc_piodriver __P((struct xdc_softc *, int, int)); 221 int xdc_remove_iorq __P((struct xdc_softc *)); 222 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 223 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 224 struct xd_softc *, int, u_long, int, 225 caddr_t, struct buf *)); 226 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 227 void xdc_start __P((struct xdc_softc *, int)); 228 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 229 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 230 void xdc_tick __P((void *)); 231 void xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 232 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 233 int *, bus_size_t, caddr_t *, bus_addr_t *); 234 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 235 int, bus_size_t, caddr_t); 236 237 238 /* machine interrupt hook */ 239 int xdcintr __P((void *)); 240 241 /* autoconf */ 242 int xdcmatch __P((struct device *, struct cfdata *, void *)); 243 void xdcattach __P((struct device *, struct device *, void *)); 244 int xdmatch __P((struct device *, struct cfdata *, void *)); 245 void xdattach __P((struct device *, struct device *, void *)); 246 static int xdc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 247 248 static void xddummystrat __P((struct buf *)); 249 int xdgetdisklabel __P((struct xd_softc *, void *)); 250 251 /* XXX - think about this more.. xd_machdep? */ 252 void xdc_md_setup __P((void)); 253 int XDC_DELAY; 254 255 #if defined(__sparc__) 256 #include <sparc/sparc/vaddrs.h> 257 #include <sparc/sparc/cpuvar.h> 258 void xdc_md_setup() 259 { 260 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 261 XDC_DELAY = XDC_DELAY_4_300; 262 else 263 XDC_DELAY = XDC_DELAY_SPARC; 264 } 265 #elif defined(sun3) 266 void xdc_md_setup() 267 { 268 XDC_DELAY = XDC_DELAY_SUN3; 269 } 270 #else 271 void xdc_md_setup() 272 { 273 XDC_DELAY = 0; 274 } 275 #endif 276 277 /* 278 * cfattach's: device driver interface to autoconfig 279 */ 280 281 CFATTACH_DECL(xdc, sizeof(struct xdc_softc), 282 xdcmatch, xdcattach, NULL, NULL); 283 284 CFATTACH_DECL(xd, sizeof(struct xd_softc), 285 xdmatch, xdattach, NULL, NULL); 286 287 extern struct cfdriver xd_cd; 288 289 dev_type_open(xdopen); 290 dev_type_close(xdclose); 291 dev_type_read(xdread); 292 dev_type_write(xdwrite); 293 dev_type_ioctl(xdioctl); 294 dev_type_strategy(xdstrategy); 295 dev_type_dump(xddump); 296 dev_type_size(xdsize); 297 298 const struct bdevsw xd_bdevsw = { 299 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 300 }; 301 302 const struct cdevsw xd_cdevsw = { 303 xdopen, xdclose, xdread, xdwrite, xdioctl, 304 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 305 }; 306 307 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 308 int driveno; /* unit number */ 309 int fullmode; /* submit mode */ 310 int booting; /* are we booting or not? */ 311 }; 312 313 /* 314 * dkdriver 315 */ 316 317 struct dkdriver xddkdriver = {xdstrategy}; 318 319 /* 320 * start: disk label fix code (XXX) 321 */ 322 323 static void *xd_labeldata; 324 325 static void 326 xddummystrat(bp) 327 struct buf *bp; 328 { 329 if (bp->b_bcount != XDFM_BPS) 330 panic("xddummystrat"); 331 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 332 bp->b_flags |= B_DONE; 333 bp->b_flags &= ~B_BUSY; 334 } 335 336 int 337 xdgetdisklabel(xd, b) 338 struct xd_softc *xd; 339 void *b; 340 { 341 const char *err; 342 #if defined(__sparc__) || defined(sun3) 343 struct sun_disklabel *sdl; 344 #endif 345 346 /* We already have the label data in `b'; setup for dummy strategy */ 347 xd_labeldata = b; 348 349 /* Required parameter for readdisklabel() */ 350 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 351 352 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 353 xddummystrat, 354 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 355 if (err) { 356 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 357 return(XD_ERR_FAIL); 358 } 359 360 #if defined(__sparc__) || defined(sun3) 361 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 362 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 363 if (sdl->sl_magic == SUN_DKMAGIC) { 364 xd->pcyl = sdl->sl_pcylinders; 365 } else 366 #endif 367 { 368 printf("%s: WARNING: no `pcyl' in disk label.\n", 369 xd->sc_dev.dv_xname); 370 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 371 xd->sc_dk.dk_label->d_acylinders; 372 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 373 xd->sc_dev.dv_xname, xd->pcyl); 374 } 375 376 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 377 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 378 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 379 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 380 xd->sectpercyl = xd->nhead * xd->nsect; 381 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 382 * sun->bsd */ 383 return(XD_ERR_AOK); 384 } 385 386 /* 387 * end: disk label fix code (XXX) 388 */ 389 390 /* 391 * Shorthand for allocating, mapping and loading a DMA buffer 392 */ 393 int 394 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 395 bus_dma_tag_t tag; 396 bus_dmamap_t map; 397 bus_dma_segment_t *seg; 398 int *nsegp; 399 bus_size_t len; 400 caddr_t *kvap; 401 bus_addr_t *dmap; 402 { 403 int nseg; 404 int error; 405 406 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 407 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 408 return (error); 409 } 410 411 if ((error = bus_dmamem_map(tag, seg, nseg, 412 len, kvap, 413 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 414 bus_dmamem_free(tag, seg, nseg); 415 return (error); 416 } 417 418 if ((error = bus_dmamap_load(tag, map, 419 *kvap, len, NULL, 420 BUS_DMA_NOWAIT)) != 0) { 421 bus_dmamem_unmap(tag, *kvap, len); 422 bus_dmamem_free(tag, seg, nseg); 423 return (error); 424 } 425 426 *dmap = map->dm_segs[0].ds_addr; 427 *nsegp = nseg; 428 return (0); 429 } 430 431 void 432 xd_dmamem_free(tag, map, seg, nseg, len, kva) 433 bus_dma_tag_t tag; 434 bus_dmamap_t map; 435 bus_dma_segment_t *seg; 436 int nseg; 437 bus_size_t len; 438 caddr_t kva; 439 { 440 441 bus_dmamap_unload(tag, map); 442 bus_dmamem_unmap(tag, kva, len); 443 bus_dmamem_free(tag, seg, nseg); 444 } 445 446 447 /* 448 * a u t o c o n f i g f u n c t i o n s 449 */ 450 451 /* 452 * xdcmatch: determine if xdc is present or not. we do a 453 * soft reset to detect the xdc. 454 */ 455 456 int 457 xdc_probe(arg, tag, handle) 458 void *arg; 459 bus_space_tag_t tag; 460 bus_space_handle_t handle; 461 { 462 struct xdc *xdc = (void *)handle; /* XXX */ 463 int del = 0; 464 465 xdc->xdc_csr = XDC_RESET; 466 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 467 return (del > 0 ? 0 : EIO); 468 } 469 470 int xdcmatch(parent, cf, aux) 471 struct device *parent; 472 struct cfdata *cf; 473 void *aux; 474 { 475 struct vme_attach_args *va = aux; 476 vme_chipset_tag_t ct = va->va_vct; 477 vme_am_t mod; 478 int error; 479 480 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 481 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 482 return (0); 483 484 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 485 mod, VME_D32, xdc_probe, 0); 486 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 487 488 return (error == 0); 489 } 490 491 /* 492 * xdcattach: attach controller 493 */ 494 void 495 xdcattach(parent, self, aux) 496 struct device *parent, *self; 497 void *aux; 498 499 { 500 struct vme_attach_args *va = aux; 501 vme_chipset_tag_t ct = va->va_vct; 502 bus_space_tag_t bt; 503 bus_space_handle_t bh; 504 vme_intr_handle_t ih; 505 vme_am_t mod; 506 struct xdc_softc *xdc = (void *) self; 507 struct xdc_attach_args xa; 508 int lcv, rqno, error; 509 struct xd_iopb_ctrl *ctl; 510 bus_dma_segment_t seg; 511 int rseg; 512 vme_mapresc_t resc; 513 514 xdc_md_setup(); 515 516 /* get addressing and intr level stuff from autoconfig and load it 517 * into our xdc_softc. */ 518 519 xdc->dmatag = va->va_bdt; 520 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 521 522 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 523 panic("xdc: vme alloc"); 524 525 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 526 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 527 panic("xdc: vme_map"); 528 529 xdc->xdc = (struct xdc *) bh; /* XXX */ 530 xdc->ipl = va->ilevel; 531 xdc->vector = va->ivector; 532 533 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 534 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 535 536 /* 537 * allocate and zero buffers 538 * 539 * note: we simplify the code by allocating the max number of iopbs and 540 * iorq's up front. thus, we avoid linked lists and the costs 541 * associated with them in exchange for wasting a little memory. 542 */ 543 544 /* Get DMA handle for misc. transfers */ 545 if ((error = vme_dmamap_create( 546 ct, /* VME chip tag */ 547 MAXPHYS, /* size */ 548 VME_AM_A24, /* address modifier */ 549 VME_D32, /* data size */ 550 0, /* swap */ 551 1, /* nsegments */ 552 MAXPHYS, /* maxsegsz */ 553 0, /* boundary */ 554 BUS_DMA_NOWAIT, 555 &xdc->auxmap)) != 0) { 556 557 printf("%s: DMA buffer map create error %d\n", 558 xdc->sc_dev.dv_xname, error); 559 return; 560 } 561 562 563 /* Get DMA handle for mapping iorq descriptors */ 564 if ((error = vme_dmamap_create( 565 ct, /* VME chip tag */ 566 XDC_MAXIOPB * sizeof(struct xd_iopb), 567 VME_AM_A24, /* address modifier */ 568 VME_D32, /* data size */ 569 0, /* swap */ 570 1, /* nsegments */ 571 XDC_MAXIOPB * sizeof(struct xd_iopb), 572 0, /* boundary */ 573 BUS_DMA_NOWAIT, 574 &xdc->iopmap)) != 0) { 575 576 printf("%s: DMA buffer map create error %d\n", 577 xdc->sc_dev.dv_xname, error); 578 return; 579 } 580 581 /* Get DMA buffer for iorq descriptors */ 582 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 583 XDC_MAXIOPB * sizeof(struct xd_iopb), 584 (caddr_t *)&xdc->iopbase, 585 (bus_addr_t *)&xdc->dvmaiopb)) != 0) { 586 printf("%s: DMA buffer alloc error %d\n", 587 xdc->sc_dev.dv_xname, error); 588 return; 589 } 590 591 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 592 593 xdc->reqs = (struct xd_iorq *) 594 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 595 M_DEVBUF, M_NOWAIT|M_ZERO); 596 if (xdc->reqs == NULL) 597 panic("xdc malloc"); 598 599 /* init free list, iorq to iopb pointers, and non-zero fields in the 600 * iopb which never change. */ 601 602 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 603 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 604 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 605 xdc->freereq[lcv] = lcv; 606 xdc->iopbase[lcv].fixd = 1; /* always the same */ 607 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 608 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 609 610 if ((error = vme_dmamap_create( 611 ct, /* VME chip tag */ 612 MAXPHYS, /* size */ 613 VME_AM_A24, /* address modifier */ 614 VME_D32, /* data size */ 615 0, /* swap */ 616 1, /* nsegments */ 617 MAXPHYS, /* maxsegsz */ 618 0, /* boundary */ 619 BUS_DMA_NOWAIT, 620 &xdc->reqs[lcv].dmamap)) != 0) { 621 622 printf("%s: DMA buffer map create error %d\n", 623 xdc->sc_dev.dv_xname, error); 624 return; 625 } 626 } 627 xdc->nfree = XDC_MAXIOPB; 628 xdc->nrun = 0; 629 xdc->waithead = xdc->waitend = xdc->nwait = 0; 630 xdc->ndone = 0; 631 632 /* init queue of waiting bufs */ 633 634 bufq_alloc(&xdc->sc_wq, BUFQ_FCFS); 635 callout_init(&xdc->sc_tick_ch); 636 637 /* 638 * section 7 of the manual tells us how to init the controller: 639 * - read controller parameters (6/0) 640 * - write controller parameters (5/0) 641 */ 642 643 /* read controller parameters and insure we have a 753/7053 */ 644 645 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 646 if (rqno == XD_ERR_FAIL) { 647 printf(": couldn't read controller params\n"); 648 return; /* shouldn't ever happen */ 649 } 650 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 651 if (ctl->ctype != XDCT_753) { 652 if (xdc->reqs[rqno].errno) 653 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 654 printf(": doesn't identify as a 753/7053\n"); 655 XDC_DONE(xdc, rqno, error); 656 return; 657 } 658 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 659 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 660 XDC_DONE(xdc, rqno, error); 661 662 /* now write controller parameters (xdc_cmd sets all params for us) */ 663 664 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 665 XDC_DONE(xdc, rqno, error); 666 if (error) { 667 printf("%s: controller config error: %s\n", 668 xdc->sc_dev.dv_xname, xdc_e2str(error)); 669 return; 670 } 671 672 /* link in interrupt with higher level software */ 673 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 674 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 675 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 676 xdc->sc_dev.dv_xname, "intr"); 677 678 679 /* now we must look for disks using autoconfig */ 680 xa.fullmode = XD_SUB_POLL; 681 xa.booting = 1; 682 683 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 684 (void) config_found(self, (void *) &xa, NULL); 685 686 /* start the watchdog clock */ 687 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 688 689 } 690 691 /* 692 * xdmatch: probe for disk. 693 * 694 * note: we almost always say disk is present. this allows us to 695 * spin up and configure a disk after the system is booted (we can 696 * call xdattach!). 697 */ 698 int 699 xdmatch(parent, cf, aux) 700 struct device *parent; 701 struct cfdata *cf; 702 void *aux; 703 { 704 struct xdc_attach_args *xa = aux; 705 706 /* looking for autoconf wildcard or exact match */ 707 708 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 709 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 710 return 0; 711 712 return 1; 713 714 } 715 716 /* 717 * xdattach: attach a disk. this can be called from autoconf and also 718 * from xdopen/xdstrategy. 719 */ 720 void 721 xdattach(parent, self, aux) 722 struct device *parent, *self; 723 void *aux; 724 725 { 726 struct xd_softc *xd = (void *) self; 727 struct xdc_softc *xdc = (void *) parent; 728 struct xdc_attach_args *xa = aux; 729 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 730 struct xd_iopb_drive *driopb; 731 struct dkbad *dkb; 732 int rseg, error; 733 bus_dma_segment_t seg; 734 caddr_t dmaddr; 735 caddr_t buf; 736 737 /* 738 * Always re-initialize the disk structure. We want statistics 739 * to start with a clean slate. 740 */ 741 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 742 xd->sc_dk.dk_driver = &xddkdriver; 743 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 744 745 /* if booting, init the xd_softc */ 746 747 if (xa->booting) { 748 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 749 xd->flags = 0; 750 xd->parent = xdc; 751 } 752 xd->xd_drive = xa->driveno; 753 fmode = xa->fullmode; 754 xdc->sc_drives[xa->driveno] = xd; 755 756 /* if not booting, make sure we are the only process in the attach for 757 * this drive. if locked out, sleep on it. */ 758 759 if (!xa->booting) { 760 s = splbio(); 761 while (xd->state == XD_DRIVE_ATTACHING) { 762 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 763 splx(s); 764 return; 765 } 766 } 767 printf("%s at %s", 768 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 769 } 770 771 /* we now have control */ 772 xd->state = XD_DRIVE_ATTACHING; 773 newstate = XD_DRIVE_UNKNOWN; 774 775 buf = NULL; 776 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 777 XDFM_BPS, 778 (caddr_t *)&buf, 779 (bus_addr_t *)&dmaddr)) != 0) { 780 printf("%s: DMA buffer alloc error %d\n", 781 xdc->sc_dev.dv_xname, error); 782 return; 783 } 784 785 /* first try and reset the drive */ 786 787 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 788 XDC_DONE(xdc, rqno, error); 789 if (error == XD_ERR_NRDY) { 790 printf(" drive %d: off-line\n", xa->driveno); 791 goto done; 792 } 793 if (error) { 794 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 795 goto done; 796 } 797 printf(" drive %d: ready\n", xa->driveno); 798 799 /* now set format parameters */ 800 801 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 802 XDC_DONE(xdc, rqno, error); 803 if (error) { 804 printf("%s: write format parameters failed: %s\n", 805 xd->sc_dev.dv_xname, xdc_e2str(error)); 806 goto done; 807 } 808 809 /* get drive parameters */ 810 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 811 if (rqno != XD_ERR_FAIL) { 812 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 813 spt = driopb->sectpertrk; 814 } 815 XDC_DONE(xdc, rqno, error); 816 if (error) { 817 printf("%s: read drive parameters failed: %s\n", 818 xd->sc_dev.dv_xname, xdc_e2str(error)); 819 goto done; 820 } 821 822 /* 823 * now set drive parameters (to semi-bogus values) so we can read the 824 * disk label. 825 */ 826 xd->pcyl = xd->ncyl = 1; 827 xd->acyl = 0; 828 xd->nhead = 1; 829 xd->nsect = 1; 830 xd->sectpercyl = 1; 831 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 832 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 833 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 834 XDC_DONE(xdc, rqno, error); 835 if (error) { 836 printf("%s: write drive parameters failed: %s\n", 837 xd->sc_dev.dv_xname, xdc_e2str(error)); 838 goto done; 839 } 840 841 /* read disk label */ 842 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 843 XDC_DONE(xdc, rqno, error); 844 if (error) { 845 printf("%s: reading disk label failed: %s\n", 846 xd->sc_dev.dv_xname, xdc_e2str(error)); 847 goto done; 848 } 849 newstate = XD_DRIVE_NOLABEL; 850 851 xd->hw_spt = spt; 852 /* Attach the disk: must be before getdisklabel to malloc label */ 853 disk_attach(&xd->sc_dk); 854 855 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 856 goto done; 857 858 /* inform the user of what is up */ 859 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 860 buf, xd->pcyl, spt); 861 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 862 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 863 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 864 XDFM_BPS); 865 866 /* now set the real drive parameters! */ 867 868 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 869 XDC_DONE(xdc, rqno, error); 870 if (error) { 871 printf("%s: write real drive parameters failed: %s\n", 872 xd->sc_dev.dv_xname, xdc_e2str(error)); 873 goto done; 874 } 875 newstate = XD_DRIVE_ONLINE; 876 877 /* 878 * read bad144 table. this table resides on the first sector of the 879 * last track of the disk (i.e. second cyl of "acyl" area). 880 */ 881 882 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 883 (xd->nhead - 1) * xd->nsect; /* last head */ 884 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 885 XDC_DONE(xdc, rqno, error); 886 if (error) { 887 printf("%s: reading bad144 failed: %s\n", 888 xd->sc_dev.dv_xname, xdc_e2str(error)); 889 goto done; 890 } 891 892 /* check dkbad for sanity */ 893 dkb = (struct dkbad *) buf; 894 for (lcv = 0; lcv < 126; lcv++) { 895 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 896 dkb->bt_bad[lcv].bt_cyl == 0) && 897 dkb->bt_bad[lcv].bt_trksec == 0xffff) 898 continue; /* blank */ 899 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 900 break; 901 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 902 break; 903 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 904 break; 905 } 906 if (lcv != 126) { 907 printf("%s: warning: invalid bad144 sector!\n", 908 xd->sc_dev.dv_xname); 909 } else { 910 bcopy(buf, &xd->dkb, XDFM_BPS); 911 } 912 913 done: 914 if (buf != NULL) { 915 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 916 &seg, rseg, XDFM_BPS, buf); 917 } 918 919 xd->state = newstate; 920 if (!xa->booting) { 921 wakeup(&xd->state); 922 splx(s); 923 } 924 } 925 926 /* 927 * end of autoconfig functions 928 */ 929 930 /* 931 * { b , c } d e v s w f u n c t i o n s 932 */ 933 934 /* 935 * xdclose: close device 936 */ 937 int 938 xdclose(dev, flag, fmt, l) 939 dev_t dev; 940 int flag, fmt; 941 struct lwp *l; 942 { 943 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 944 int part = DISKPART(dev); 945 946 /* clear mask bits */ 947 948 switch (fmt) { 949 case S_IFCHR: 950 xd->sc_dk.dk_copenmask &= ~(1 << part); 951 break; 952 case S_IFBLK: 953 xd->sc_dk.dk_bopenmask &= ~(1 << part); 954 break; 955 } 956 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 957 958 return 0; 959 } 960 961 /* 962 * xddump: crash dump system 963 */ 964 int 965 xddump(dev, blkno, va, size) 966 dev_t dev; 967 daddr_t blkno; 968 caddr_t va; 969 size_t size; 970 { 971 int unit, part; 972 struct xd_softc *xd; 973 974 unit = DISKUNIT(dev); 975 if (unit >= xd_cd.cd_ndevs) 976 return ENXIO; 977 part = DISKPART(dev); 978 979 xd = xd_cd.cd_devs[unit]; 980 981 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 982 'a' + part); 983 984 return ENXIO; 985 986 /* outline: globals: "dumplo" == sector number of partition to start 987 * dump at (convert to physical sector with partition table) 988 * "dumpsize" == size of dump in clicks "physmem" == size of physical 989 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 990 * physmem) 991 * 992 * dump a copy of physical memory to the dump device starting at sector 993 * "dumplo" in the swap partition (make sure > 0). map in pages as 994 * we go. use polled I/O. 995 * 996 * XXX how to handle NON_CONTIG? */ 997 998 } 999 1000 /* 1001 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1002 */ 1003 int 1004 xdioctl(dev, command, addr, flag, l) 1005 dev_t dev; 1006 u_long command; 1007 caddr_t addr; 1008 int flag; 1009 struct lwp *l; 1010 1011 { 1012 struct proc *p = l->l_proc; 1013 struct xd_softc *xd; 1014 struct xd_iocmd *xio; 1015 int error, s, unit; 1016 #ifdef __HAVE_OLD_DISKLABEL 1017 struct disklabel newlabel; 1018 #endif 1019 struct disklabel *lp; 1020 1021 unit = DISKUNIT(dev); 1022 1023 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1024 return (ENXIO); 1025 1026 /* switch on ioctl type */ 1027 1028 switch (command) { 1029 case DIOCSBAD: /* set bad144 info */ 1030 if ((flag & FWRITE) == 0) 1031 return EBADF; 1032 s = splbio(); 1033 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1034 splx(s); 1035 return 0; 1036 1037 case DIOCGDINFO: /* get disk label */ 1038 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1039 return 0; 1040 #ifdef __HAVE_OLD_DISKLABEL 1041 case ODIOCGDINFO: 1042 newlabel = *(xd->sc_dk.dk_label); 1043 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1044 return ENOTTY; 1045 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1046 return 0; 1047 #endif 1048 1049 case DIOCGPART: /* get partition info */ 1050 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1051 ((struct partinfo *) addr)->part = 1052 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1053 return 0; 1054 1055 case DIOCSDINFO: /* set disk label */ 1056 #ifdef __HAVE_OLD_DISKLABEL 1057 case ODIOCSDINFO: 1058 if (command == ODIOCSDINFO) { 1059 memset(&newlabel, 0, sizeof newlabel); 1060 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1061 lp = &newlabel; 1062 } else 1063 #endif 1064 lp = (struct disklabel *)addr; 1065 1066 if ((flag & FWRITE) == 0) 1067 return EBADF; 1068 error = setdisklabel(xd->sc_dk.dk_label, 1069 lp, /* xd->sc_dk.dk_openmask : */ 0, 1070 xd->sc_dk.dk_cpulabel); 1071 if (error == 0) { 1072 if (xd->state == XD_DRIVE_NOLABEL) 1073 xd->state = XD_DRIVE_ONLINE; 1074 } 1075 return error; 1076 1077 case DIOCWLABEL: /* change write status of disk label */ 1078 if ((flag & FWRITE) == 0) 1079 return EBADF; 1080 if (*(int *) addr) 1081 xd->flags |= XD_WLABEL; 1082 else 1083 xd->flags &= ~XD_WLABEL; 1084 return 0; 1085 1086 case DIOCWDINFO: /* write disk label */ 1087 #ifdef __HAVE_OLD_DISKLABEL 1088 case ODIOCWDINFO: 1089 if (command == ODIOCWDINFO) { 1090 memset(&newlabel, 0, sizeof newlabel); 1091 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1092 lp = &newlabel; 1093 } else 1094 #endif 1095 lp = (struct disklabel *)addr; 1096 1097 if ((flag & FWRITE) == 0) 1098 return EBADF; 1099 error = setdisklabel(xd->sc_dk.dk_label, 1100 lp, /* xd->sc_dk.dk_openmask : */ 0, 1101 xd->sc_dk.dk_cpulabel); 1102 if (error == 0) { 1103 if (xd->state == XD_DRIVE_NOLABEL) 1104 xd->state = XD_DRIVE_ONLINE; 1105 1106 /* Simulate opening partition 0 so write succeeds. */ 1107 xd->sc_dk.dk_openmask |= (1 << 0); 1108 error = writedisklabel(MAKEDISKDEV(major(dev), 1109 DISKUNIT(dev), RAW_PART), 1110 xdstrategy, xd->sc_dk.dk_label, 1111 xd->sc_dk.dk_cpulabel); 1112 xd->sc_dk.dk_openmask = 1113 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1114 } 1115 return error; 1116 1117 case DIOSXDCMD: 1118 xio = (struct xd_iocmd *) addr; 1119 if ((error = suser(p->p_ucred, &p->p_acflag)) != 0) 1120 return (error); 1121 return (xdc_ioctlcmd(xd, dev, xio)); 1122 1123 default: 1124 return ENOTTY; 1125 } 1126 } 1127 /* 1128 * xdopen: open drive 1129 */ 1130 1131 int 1132 xdopen(dev, flag, fmt, l) 1133 dev_t dev; 1134 int flag, fmt; 1135 struct lwp *l; 1136 { 1137 int unit, part; 1138 struct xd_softc *xd; 1139 struct xdc_attach_args xa; 1140 1141 /* first, could it be a valid target? */ 1142 1143 unit = DISKUNIT(dev); 1144 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1145 return (ENXIO); 1146 part = DISKPART(dev); 1147 1148 /* do we need to attach the drive? */ 1149 1150 if (xd->state == XD_DRIVE_UNKNOWN) { 1151 xa.driveno = xd->xd_drive; 1152 xa.fullmode = XD_SUB_WAIT; 1153 xa.booting = 0; 1154 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1155 if (xd->state == XD_DRIVE_UNKNOWN) { 1156 return (EIO); 1157 } 1158 } 1159 /* check for partition */ 1160 1161 if (part != RAW_PART && 1162 (part >= xd->sc_dk.dk_label->d_npartitions || 1163 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1164 return (ENXIO); 1165 } 1166 /* set open masks */ 1167 1168 switch (fmt) { 1169 case S_IFCHR: 1170 xd->sc_dk.dk_copenmask |= (1 << part); 1171 break; 1172 case S_IFBLK: 1173 xd->sc_dk.dk_bopenmask |= (1 << part); 1174 break; 1175 } 1176 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1177 1178 return 0; 1179 } 1180 1181 int 1182 xdread(dev, uio, flags) 1183 dev_t dev; 1184 struct uio *uio; 1185 int flags; 1186 { 1187 1188 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1189 } 1190 1191 int 1192 xdwrite(dev, uio, flags) 1193 dev_t dev; 1194 struct uio *uio; 1195 int flags; 1196 { 1197 1198 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1199 } 1200 1201 1202 /* 1203 * xdsize: return size of a partition for a dump 1204 */ 1205 1206 int 1207 xdsize(dev) 1208 dev_t dev; 1209 1210 { 1211 struct xd_softc *xdsc; 1212 int unit, part, size, omask; 1213 1214 /* valid unit? */ 1215 unit = DISKUNIT(dev); 1216 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1217 return (-1); 1218 1219 part = DISKPART(dev); 1220 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1221 1222 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1223 return (-1); 1224 1225 /* do it */ 1226 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1227 size = -1; /* only give valid size for swap partitions */ 1228 else 1229 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1230 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1231 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1232 return (-1); 1233 return (size); 1234 } 1235 /* 1236 * xdstrategy: buffering system interface to xd. 1237 */ 1238 1239 void 1240 xdstrategy(bp) 1241 struct buf *bp; 1242 1243 { 1244 struct xd_softc *xd; 1245 struct xdc_softc *parent; 1246 int s, unit; 1247 struct xdc_attach_args xa; 1248 1249 unit = DISKUNIT(bp->b_dev); 1250 1251 /* check for live device */ 1252 1253 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1254 bp->b_blkno < 0 || 1255 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1256 bp->b_error = EINVAL; 1257 goto bad; 1258 } 1259 /* do we need to attach the drive? */ 1260 1261 if (xd->state == XD_DRIVE_UNKNOWN) { 1262 xa.driveno = xd->xd_drive; 1263 xa.fullmode = XD_SUB_WAIT; 1264 xa.booting = 0; 1265 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1266 if (xd->state == XD_DRIVE_UNKNOWN) { 1267 bp->b_error = EIO; 1268 goto bad; 1269 } 1270 } 1271 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1272 /* no I/O to unlabeled disks, unless raw partition */ 1273 bp->b_error = EIO; 1274 goto bad; 1275 } 1276 /* short circuit zero length request */ 1277 1278 if (bp->b_bcount == 0) 1279 goto done; 1280 1281 /* check bounds with label (disksubr.c). Determine the size of the 1282 * transfer, and make sure it is within the boundaries of the 1283 * partition. Adjust transfer if needed, and signal errors or early 1284 * completion. */ 1285 1286 if (bounds_check_with_label(&xd->sc_dk, bp, 1287 (xd->flags & XD_WLABEL) != 0) <= 0) 1288 goto done; 1289 1290 /* 1291 * now we know we have a valid buf structure that we need to do I/O 1292 * on. 1293 * 1294 * note that we don't disksort because the controller has a sorting 1295 * algorithm built into the hardware. 1296 */ 1297 1298 s = splbio(); /* protect the queues */ 1299 1300 /* first, give jobs in front of us a chance */ 1301 parent = xd->parent; 1302 while (parent->nfree > 0 && BUFQ_PEEK(&parent->sc_wq) != NULL) 1303 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1304 break; 1305 1306 /* if there are no free iorq's, then we just queue and return. the 1307 * buffs will get picked up later by xdcintr(). 1308 */ 1309 1310 if (parent->nfree == 0) { 1311 BUFQ_PUT(&parent->sc_wq, bp); 1312 splx(s); 1313 return; 1314 } 1315 1316 /* now we have free iopb's and we are at splbio... start 'em up */ 1317 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1318 return; 1319 } 1320 1321 /* done! */ 1322 1323 splx(s); 1324 return; 1325 1326 bad: /* tells upper layers we have an error */ 1327 bp->b_flags |= B_ERROR; 1328 done: /* tells upper layers we are done with this 1329 * buf */ 1330 bp->b_resid = bp->b_bcount; 1331 biodone(bp); 1332 } 1333 /* 1334 * end of {b,c}devsw functions 1335 */ 1336 1337 /* 1338 * i n t e r r u p t f u n c t i o n 1339 * 1340 * xdcintr: hardware interrupt. 1341 */ 1342 int 1343 xdcintr(v) 1344 void *v; 1345 1346 { 1347 struct xdc_softc *xdcsc = v; 1348 1349 /* kick the event counter */ 1350 1351 xdcsc->sc_intrcnt.ev_count++; 1352 1353 /* remove as many done IOPBs as possible */ 1354 1355 xdc_remove_iorq(xdcsc); 1356 1357 /* start any iorq's already waiting */ 1358 1359 xdc_start(xdcsc, XDC_MAXIOPB); 1360 1361 /* fill up any remaining iorq's with queue'd buffers */ 1362 1363 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1364 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1365 break; 1366 1367 return (1); 1368 } 1369 /* 1370 * end of interrupt function 1371 */ 1372 1373 /* 1374 * i n t e r n a l f u n c t i o n s 1375 */ 1376 1377 /* 1378 * xdc_rqinit: fill out the fields of an I/O request 1379 */ 1380 1381 inline void 1382 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1383 struct xd_iorq *rq; 1384 struct xdc_softc *xdc; 1385 struct xd_softc *xd; 1386 int md; 1387 u_long blk; 1388 int cnt; 1389 caddr_t db; 1390 struct buf *bp; 1391 { 1392 rq->xdc = xdc; 1393 rq->xd = xd; 1394 rq->ttl = XDC_MAXTTL + 10; 1395 rq->mode = md; 1396 rq->tries = rq->errno = rq->lasterror = 0; 1397 rq->blockno = blk; 1398 rq->sectcnt = cnt; 1399 rq->dbuf = db; 1400 rq->buf = bp; 1401 } 1402 /* 1403 * xdc_rqtopb: load up an IOPB based on an iorq 1404 */ 1405 1406 void 1407 xdc_rqtopb(iorq, iopb, cmd, subfun) 1408 struct xd_iorq *iorq; 1409 struct xd_iopb *iopb; 1410 int cmd, subfun; 1411 1412 { 1413 u_long block, dp; 1414 1415 /* standard stuff */ 1416 1417 iopb->errs = iopb->done = 0; 1418 iopb->comm = cmd; 1419 iopb->errno = iopb->status = 0; 1420 iopb->subfun = subfun; 1421 if (iorq->xd) 1422 iopb->unit = iorq->xd->xd_drive; 1423 else 1424 iopb->unit = 0; 1425 1426 /* check for alternate IOPB format */ 1427 1428 if (cmd == XDCMD_WRP) { 1429 switch (subfun) { 1430 case XDFUN_CTL:{ 1431 struct xd_iopb_ctrl *ctrl = 1432 (struct xd_iopb_ctrl *) iopb; 1433 iopb->lll = 0; 1434 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1435 ? 0 1436 : iorq->xdc->ipl; 1437 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1438 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1439 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1440 XDPC_RBC | XDPC_ECC2; 1441 ctrl->throttle = XDC_THROTTLE; 1442 ctrl->delay = XDC_DELAY; 1443 break; 1444 } 1445 case XDFUN_DRV:{ 1446 struct xd_iopb_drive *drv = 1447 (struct xd_iopb_drive *)iopb; 1448 /* we assume that the disk label has the right 1449 * info */ 1450 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1451 drv->dparam_ipl = (XDC_DPARAM << 3); 1452 else 1453 drv->dparam_ipl = (XDC_DPARAM << 3) | 1454 iorq->xdc->ipl; 1455 drv->maxsect = iorq->xd->nsect - 1; 1456 drv->maxsector = drv->maxsect; 1457 /* note: maxsector != maxsect only if you are 1458 * doing cyl sparing */ 1459 drv->headoff = 0; 1460 drv->maxcyl = iorq->xd->pcyl - 1; 1461 drv->maxhead = iorq->xd->nhead - 1; 1462 break; 1463 } 1464 case XDFUN_FMT:{ 1465 struct xd_iopb_format *form = 1466 (struct xd_iopb_format *) iopb; 1467 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1468 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1469 else 1470 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1471 iorq->xdc->ipl; 1472 form->field1 = XDFM_FIELD1; 1473 form->field2 = XDFM_FIELD2; 1474 form->field3 = XDFM_FIELD3; 1475 form->field4 = XDFM_FIELD4; 1476 form->bytespersec = XDFM_BPS; 1477 form->field6 = XDFM_FIELD6; 1478 form->field7 = XDFM_FIELD7; 1479 break; 1480 } 1481 } 1482 } else { 1483 1484 /* normal IOPB case (harmless to RDP command) */ 1485 1486 iopb->lll = 0; 1487 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1488 ? 0 1489 : iorq->xdc->ipl; 1490 iopb->sectcnt = iorq->sectcnt; 1491 block = iorq->blockno; 1492 if (iorq->xd == NULL || block == 0) { 1493 iopb->sectno = iopb->headno = iopb->cylno = 0; 1494 } else { 1495 iopb->sectno = block % iorq->xd->nsect; 1496 block = block / iorq->xd->nsect; 1497 iopb->headno = block % iorq->xd->nhead; 1498 block = block / iorq->xd->nhead; 1499 iopb->cylno = block; 1500 } 1501 dp = (u_long) iorq->dbuf; 1502 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1503 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1504 ? XDC_ADDRMOD32 1505 : XDC_ADDRMOD; 1506 } 1507 } 1508 1509 /* 1510 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1511 * If you've already got an IORQ, you can call submit directly (currently 1512 * there is no need to do this). NORM requests are handled separately. 1513 */ 1514 int 1515 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1516 struct xdc_softc *xdcsc; 1517 int cmd, subfn, unit, block, scnt; 1518 char *dptr; 1519 int fullmode; 1520 1521 { 1522 int rqno, submode = XD_STATE(fullmode), retry; 1523 struct xd_iorq *iorq; 1524 struct xd_iopb *iopb; 1525 1526 /* get iorq/iopb */ 1527 switch (submode) { 1528 case XD_SUB_POLL: 1529 while (xdcsc->nfree == 0) { 1530 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1531 return (XD_ERR_FAIL); 1532 } 1533 break; 1534 case XD_SUB_WAIT: 1535 retry = 1; 1536 while (retry) { 1537 while (xdcsc->nfree == 0) { 1538 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1539 return (XD_ERR_FAIL); 1540 } 1541 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1542 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1543 return (XD_ERR_FAIL); 1544 } 1545 if (xdcsc->nfree) 1546 retry = 0; /* got it */ 1547 } 1548 break; 1549 default: 1550 return (XD_ERR_FAIL); /* illegal */ 1551 } 1552 if (xdcsc->nfree == 0) 1553 panic("xdcmd nfree"); 1554 rqno = XDC_RQALLOC(xdcsc); 1555 iorq = &xdcsc->reqs[rqno]; 1556 iopb = iorq->iopb; 1557 1558 1559 /* init iorq/iopb */ 1560 1561 xdc_rqinit(iorq, xdcsc, 1562 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1563 fullmode, block, scnt, dptr, NULL); 1564 1565 /* load IOPB from iorq */ 1566 1567 xdc_rqtopb(iorq, iopb, cmd, subfn); 1568 1569 /* submit it for processing */ 1570 1571 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1572 1573 return (rqno); 1574 } 1575 /* 1576 * xdc_startbuf 1577 * start a buffer running, assumes nfree > 0 1578 */ 1579 1580 int 1581 xdc_startbuf(xdcsc, xdsc, bp) 1582 struct xdc_softc *xdcsc; 1583 struct xd_softc *xdsc; 1584 struct buf *bp; 1585 1586 { 1587 int rqno, partno; 1588 struct xd_iorq *iorq; 1589 struct xd_iopb *iopb; 1590 u_long block; 1591 /* caddr_t dbuf;*/ 1592 int error; 1593 1594 if (!xdcsc->nfree) 1595 panic("xdc_startbuf free"); 1596 rqno = XDC_RQALLOC(xdcsc); 1597 iorq = &xdcsc->reqs[rqno]; 1598 iopb = iorq->iopb; 1599 1600 /* get buf */ 1601 1602 if (bp == NULL) { 1603 bp = BUFQ_GET(&xdcsc->sc_wq); 1604 if (bp == NULL) 1605 panic("xdc_startbuf bp"); 1606 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1607 } 1608 partno = DISKPART(bp->b_dev); 1609 #ifdef XDC_DEBUG 1610 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1611 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1612 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1613 bp->b_bcount, bp->b_data); 1614 #endif 1615 1616 /* 1617 * load request. we have to calculate the correct block number based 1618 * on partition info. 1619 * 1620 * note that iorq points to the buffer as mapped into DVMA space, 1621 * where as the bp->b_data points to its non-DVMA mapping. 1622 */ 1623 1624 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1625 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1626 1627 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1628 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1629 if (error != 0) { 1630 printf("%s: warning: cannot load DMA map\n", 1631 xdcsc->sc_dev.dv_xname); 1632 XDC_FREE(xdcsc, rqno); 1633 BUFQ_PUT(&xdcsc->sc_wq, bp); 1634 return (XD_ERR_FAIL); /* XXX: need some sort of 1635 * call-back scheme here? */ 1636 } 1637 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1638 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1639 ? BUS_DMASYNC_PREREAD 1640 : BUS_DMASYNC_PREWRITE); 1641 1642 /* init iorq and load iopb from it */ 1643 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1644 bp->b_bcount / XDFM_BPS, 1645 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1646 bp); 1647 1648 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1649 1650 /* Instrumentation. */ 1651 disk_busy(&xdsc->sc_dk); 1652 1653 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1654 1655 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1656 return (XD_ERR_AOK); 1657 } 1658 1659 1660 /* 1661 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1662 * if ok. if it fail returns an error code. type is XD_SUB_*. 1663 * 1664 * note: caller frees iorq in all cases except NORM 1665 * 1666 * return value: 1667 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1668 * WAIT: XD_AOK (success), <error-code> (failed) 1669 * POLL: <same as WAIT> 1670 * NOQ : <same as NORM> 1671 * 1672 * there are three sources for i/o requests: 1673 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1674 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1675 * [3] open/ioctl: these are I/O requests done in the context of a process, 1676 * and the process should block until they are done. 1677 * 1678 * software state is stored in the iorq structure. each iorq has an 1679 * iopb structure. the hardware understands the iopb structure. 1680 * every command must go through an iopb. a 7053 can only handle 1681 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1682 * DVMA space at boot up time. what happens if we run out of iopb's? 1683 * for i/o type [1], the buffers are queued at the "buff" layer and 1684 * picked up later by the interrupt routine. for case [2] the 1685 * programmed i/o driver is called with a special flag that says 1686 * return when one iopb is free. for case [3] the process can sleep 1687 * on the iorq free list until some iopbs are avaliable. 1688 */ 1689 1690 1691 int 1692 xdc_submit_iorq(xdcsc, iorqno, type) 1693 struct xdc_softc *xdcsc; 1694 int iorqno; 1695 int type; 1696 1697 { 1698 u_long iopbaddr; 1699 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1700 1701 #ifdef XDC_DEBUG 1702 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1703 iorqno, type); 1704 #endif 1705 1706 /* first check and see if controller is busy */ 1707 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1708 #ifdef XDC_DEBUG 1709 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1710 #endif 1711 if (type == XD_SUB_NOQ) 1712 return (XD_ERR_FAIL); /* failed */ 1713 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1714 switch (type) { 1715 case XD_SUB_NORM: 1716 return XD_ERR_AOK; /* success */ 1717 case XD_SUB_WAIT: 1718 while (iorq->iopb->done == 0) { 1719 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1720 } 1721 return (iorq->errno); 1722 case XD_SUB_POLL: 1723 return (xdc_piodriver(xdcsc, iorqno, 0)); 1724 default: 1725 panic("xdc_submit_iorq adding"); 1726 } 1727 } 1728 #ifdef XDC_DEBUG 1729 { 1730 u_char *rio = (u_char *) iorq->iopb; 1731 int sz = sizeof(struct xd_iopb), lcv; 1732 printf("%s: aio #%d [", 1733 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1734 for (lcv = 0; lcv < sz; lcv++) 1735 printf(" %02x", rio[lcv]); 1736 printf("]\n"); 1737 } 1738 #endif /* XDC_DEBUG */ 1739 1740 /* controller not busy, start command */ 1741 iopbaddr = (u_long) iorq->dmaiopb; 1742 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1743 xdcsc->nrun++; 1744 /* command now running, wrap it up */ 1745 switch (type) { 1746 case XD_SUB_NORM: 1747 case XD_SUB_NOQ: 1748 return (XD_ERR_AOK); /* success */ 1749 case XD_SUB_WAIT: 1750 while (iorq->iopb->done == 0) { 1751 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1752 } 1753 return (iorq->errno); 1754 case XD_SUB_POLL: 1755 return (xdc_piodriver(xdcsc, iorqno, 0)); 1756 default: 1757 panic("xdc_submit_iorq wrap up"); 1758 } 1759 panic("xdc_submit_iorq"); 1760 return 0; /* not reached */ 1761 } 1762 1763 1764 /* 1765 * xdc_piodriver 1766 * 1767 * programmed i/o driver. this function takes over the computer 1768 * and drains off all i/o requests. it returns the status of the iorq 1769 * the caller is interesting in. if freeone is true, then it returns 1770 * when there is a free iorq. 1771 */ 1772 int 1773 xdc_piodriver(xdcsc, iorqno, freeone) 1774 struct xdc_softc *xdcsc; 1775 int iorqno; 1776 int freeone; 1777 1778 { 1779 int nreset = 0; 1780 int retval = 0; 1781 u_long count; 1782 struct xdc *xdc = xdcsc->xdc; 1783 #ifdef XDC_DEBUG 1784 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1785 iorqno, freeone); 1786 #endif 1787 1788 while (xdcsc->nwait || xdcsc->nrun) { 1789 #ifdef XDC_DEBUG 1790 printf("xdc_piodriver: wait=%d, run=%d\n", 1791 xdcsc->nwait, xdcsc->nrun); 1792 #endif 1793 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1794 #ifdef XDC_DEBUG 1795 printf("xdc_piodriver: done wait with count = %d\n", count); 1796 #endif 1797 /* we expect some progress soon */ 1798 if (count == 0 && nreset >= 2) { 1799 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1800 #ifdef XDC_DEBUG 1801 printf("xdc_piodriver: timeout\n"); 1802 #endif 1803 return (XD_ERR_FAIL); 1804 } 1805 if (count == 0) { 1806 if (xdc_reset(xdcsc, 0, 1807 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1808 XD_ERR_FAIL, 1809 0) == XD_ERR_FAIL) 1810 return (XD_ERR_FAIL); /* flushes all but POLL 1811 * requests, resets */ 1812 continue; 1813 } 1814 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1815 if (freeone) { 1816 if (xdcsc->nrun < XDC_MAXIOPB) { 1817 #ifdef XDC_DEBUG 1818 printf("xdc_piodriver: done: one free\n"); 1819 #endif 1820 return (XD_ERR_AOK); 1821 } 1822 continue; /* don't xdc_start */ 1823 } 1824 xdc_start(xdcsc, XDC_MAXIOPB); 1825 } 1826 1827 /* get return value */ 1828 1829 retval = xdcsc->reqs[iorqno].errno; 1830 1831 #ifdef XDC_DEBUG 1832 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1833 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1834 #endif 1835 1836 /* now that we've drained everything, start up any bufs that have 1837 * queued */ 1838 1839 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1840 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1841 break; 1842 1843 return (retval); 1844 } 1845 1846 /* 1847 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1848 * we steal iopb[0] for this, but we put it back when we are done. 1849 */ 1850 void 1851 xdc_xdreset(xdcsc, xdsc) 1852 struct xdc_softc *xdcsc; 1853 struct xd_softc *xdsc; 1854 1855 { 1856 struct xd_iopb tmpiopb; 1857 u_long addr; 1858 int del; 1859 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1860 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1861 xdcsc->iopbase->comm = XDCMD_RST; 1862 xdcsc->iopbase->unit = xdsc->xd_drive; 1863 addr = (u_long) xdcsc->dvmaiopb; 1864 XDC_GO(xdcsc->xdc, addr); /* go! */ 1865 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1866 if (del <= 0 || xdcsc->iopbase->errs) { 1867 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1868 xdc_e2str(xdcsc->iopbase->errno)); 1869 xdcsc->xdc->xdc_csr = XDC_RESET; 1870 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1871 if (del <= 0) 1872 panic("xdc_reset"); 1873 } else { 1874 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1875 } 1876 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1877 } 1878 1879 1880 /* 1881 * xdc_reset: reset everything: requests are marked as errors except 1882 * a polled request (which is resubmitted) 1883 */ 1884 int 1885 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1886 struct xdc_softc *xdcsc; 1887 int quiet, blastmode, error; 1888 struct xd_softc *xdsc; 1889 1890 { 1891 int del = 0, lcv, retval = XD_ERR_AOK; 1892 int oldfree = xdcsc->nfree; 1893 1894 /* soft reset hardware */ 1895 1896 if (!quiet) 1897 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1898 xdcsc->xdc->xdc_csr = XDC_RESET; 1899 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1900 if (del <= 0) { 1901 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1902 retval = XD_ERR_FAIL; 1903 } 1904 if (xdsc) 1905 xdc_xdreset(xdcsc, xdsc); 1906 1907 /* fix queues based on "blast-mode" */ 1908 1909 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1910 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1911 1912 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1913 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1914 XD_STATE(iorq->mode) != XD_SUB_NORM) 1915 /* is it active? */ 1916 continue; 1917 1918 xdcsc->nrun--; /* it isn't running any more */ 1919 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1920 /* failed */ 1921 iorq->errno = error; 1922 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1923 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1924 case XD_SUB_NORM: 1925 iorq->buf->b_error = EIO; 1926 iorq->buf->b_flags |= B_ERROR; 1927 iorq->buf->b_resid = 1928 iorq->sectcnt * XDFM_BPS; 1929 1930 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1931 iorq->dmamap->dm_mapsize, 1932 (iorq->buf->b_flags & B_READ) 1933 ? BUS_DMASYNC_POSTREAD 1934 : BUS_DMASYNC_POSTWRITE); 1935 1936 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1937 1938 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1939 (xdcsc->reqs[lcv].buf->b_bcount - 1940 xdcsc->reqs[lcv].buf->b_resid), 1941 (iorq->buf->b_flags & B_READ)); 1942 biodone(iorq->buf); 1943 XDC_FREE(xdcsc, lcv); /* add to free list */ 1944 break; 1945 case XD_SUB_WAIT: 1946 wakeup(iorq); 1947 case XD_SUB_POLL: 1948 xdcsc->ndone++; 1949 iorq->mode = 1950 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1951 break; 1952 } 1953 1954 } else { 1955 1956 /* resubmit, put at front of wait queue */ 1957 XDC_HWAIT(xdcsc, lcv); 1958 } 1959 } 1960 1961 /* 1962 * now, if stuff is waiting, start it. 1963 * since we just reset it should go 1964 */ 1965 xdc_start(xdcsc, XDC_MAXIOPB); 1966 1967 /* ok, we did it */ 1968 if (oldfree == 0 && xdcsc->nfree) 1969 wakeup(&xdcsc->nfree); 1970 1971 #ifdef XDC_DIAG 1972 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1973 if (del != XDC_MAXIOPB) 1974 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1975 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1976 else 1977 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1978 printf("%s: diag: lots of done jobs (%d)\n", 1979 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1980 #endif 1981 printf("RESET DONE\n"); 1982 return (retval); 1983 } 1984 /* 1985 * xdc_start: start all waiting buffers 1986 */ 1987 1988 void 1989 xdc_start(xdcsc, maxio) 1990 struct xdc_softc *xdcsc; 1991 int maxio; 1992 1993 { 1994 int rqno; 1995 while (maxio && xdcsc->nwait && 1996 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1997 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 1998 * param */ 1999 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 2000 panic("xdc_start"); /* should never happen */ 2001 maxio--; 2002 } 2003 } 2004 /* 2005 * xdc_remove_iorq: remove "done" IOPB's. 2006 */ 2007 2008 int 2009 xdc_remove_iorq(xdcsc) 2010 struct xdc_softc *xdcsc; 2011 2012 { 2013 int errno, rqno, comm, errs; 2014 struct xdc *xdc = xdcsc->xdc; 2015 struct xd_iopb *iopb; 2016 struct xd_iorq *iorq; 2017 struct buf *bp; 2018 2019 if (xdc->xdc_csr & XDC_F_ERROR) { 2020 /* 2021 * FATAL ERROR: should never happen under normal use. This 2022 * error is so bad, you can't even tell which IOPB is bad, so 2023 * we dump them all. 2024 */ 2025 errno = xdc->xdc_f_err; 2026 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2027 errno, xdc_e2str(errno)); 2028 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2029 printf("%s: soft reset failed!\n", 2030 xdcsc->sc_dev.dv_xname); 2031 panic("xdc_remove_iorq: controller DEAD"); 2032 } 2033 return (XD_ERR_AOK); 2034 } 2035 2036 /* 2037 * get iopb that is done 2038 * 2039 * hmm... I used to read the address of the done IOPB off the VME 2040 * registers and calculate the rqno directly from that. that worked 2041 * until I started putting a load on the controller. when loaded, i 2042 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2043 * be set, even after DELAY'ing a while! later on the timeout 2044 * routine would detect IOPBs that were marked "running" but their 2045 * "done" bit was set. rather than dealing directly with this 2046 * problem, it is just easier to look at all running IOPB's for the 2047 * done bit. 2048 */ 2049 if (xdc->xdc_csr & XDC_REMIOPB) { 2050 xdc->xdc_csr = XDC_CLRRIO; 2051 } 2052 2053 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2054 iorq = &xdcsc->reqs[rqno]; 2055 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2056 continue; /* free, or done */ 2057 iopb = &xdcsc->iopbase[rqno]; 2058 if (iopb->done == 0) 2059 continue; /* not done yet */ 2060 2061 #ifdef XDC_DEBUG 2062 { 2063 u_char *rio = (u_char *) iopb; 2064 int sz = sizeof(struct xd_iopb), lcv; 2065 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2066 for (lcv = 0; lcv < sz; lcv++) 2067 printf(" %02x", rio[lcv]); 2068 printf("]\n"); 2069 } 2070 #endif /* XDC_DEBUG */ 2071 2072 xdcsc->nrun--; 2073 2074 comm = iopb->comm; 2075 errs = iopb->errs; 2076 2077 if (errs) 2078 iorq->errno = iopb->errno; 2079 else 2080 iorq->errno = 0; 2081 2082 /* handle non-fatal errors */ 2083 2084 if (errs && 2085 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2086 continue; /* AOK: we resubmitted it */ 2087 2088 2089 /* this iorq is now done (hasn't been restarted or anything) */ 2090 2091 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2092 xdc_perror(iorq, iopb, 0); 2093 2094 /* now, if read/write check to make sure we got all the data 2095 * we needed. (this may not be the case if we got an error in 2096 * the middle of a multisector request). */ 2097 2098 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2099 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2100 /* we just successfully processed a bad144 sector 2101 * note: if we are in bad 144 mode, the pointers have 2102 * been advanced already (see above) and are pointing 2103 * at the bad144 sector. to exit bad144 mode, we 2104 * must advance the pointers 1 sector and issue a new 2105 * request if there are still sectors left to process 2106 * 2107 */ 2108 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2109 2110 /* exit b144 mode */ 2111 iorq->mode = iorq->mode & (~XD_MODE_B144); 2112 2113 if (iorq->sectcnt) { /* more to go! */ 2114 iorq->lasterror = iorq->errno = iopb->errno = 0; 2115 iopb->errs = iopb->done = 0; 2116 iorq->tries = 0; 2117 iopb->sectcnt = iorq->sectcnt; 2118 iopb->cylno = iorq->blockno / 2119 iorq->xd->sectpercyl; 2120 iopb->headno = 2121 (iorq->blockno / iorq->xd->nhead) % 2122 iorq->xd->nhead; 2123 iopb->sectno = iorq->blockno % XDFM_BPS; 2124 iopb->daddr = (u_long) iorq->dbuf; 2125 XDC_HWAIT(xdcsc, rqno); 2126 xdc_start(xdcsc, 1); /* resubmit */ 2127 continue; 2128 } 2129 } 2130 /* final cleanup, totally done with this request */ 2131 2132 switch (XD_STATE(iorq->mode)) { 2133 case XD_SUB_NORM: 2134 bp = iorq->buf; 2135 if (errs) { 2136 bp->b_error = EIO; 2137 bp->b_flags |= B_ERROR; 2138 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2139 } else { 2140 bp->b_resid = 0; /* done */ 2141 } 2142 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2143 iorq->dmamap->dm_mapsize, 2144 (bp->b_flags & B_READ) 2145 ? BUS_DMASYNC_POSTREAD 2146 : BUS_DMASYNC_POSTWRITE); 2147 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2148 2149 disk_unbusy(&iorq->xd->sc_dk, 2150 (bp->b_bcount - bp->b_resid), 2151 (bp->b_flags & B_READ)); 2152 XDC_FREE(xdcsc, rqno); 2153 biodone(bp); 2154 break; 2155 case XD_SUB_WAIT: 2156 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2157 xdcsc->ndone++; 2158 wakeup(iorq); 2159 break; 2160 case XD_SUB_POLL: 2161 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2162 xdcsc->ndone++; 2163 break; 2164 } 2165 } 2166 2167 return (XD_ERR_AOK); 2168 } 2169 2170 /* 2171 * xdc_perror: print error. 2172 * - if still_trying is true: we got an error, retried and got a 2173 * different error. in that case lasterror is the old error, 2174 * and errno is the new one. 2175 * - if still_trying is not true, then if we ever had an error it 2176 * is in lasterror. also, if iorq->errno == 0, then we recovered 2177 * from that error (otherwise iorq->errno == iorq->lasterror). 2178 */ 2179 void 2180 xdc_perror(iorq, iopb, still_trying) 2181 struct xd_iorq *iorq; 2182 struct xd_iopb *iopb; 2183 int still_trying; 2184 2185 { 2186 2187 int error = iorq->lasterror; 2188 2189 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2190 : iorq->xdc->sc_dev.dv_xname); 2191 if (iorq->buf) 2192 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2193 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2194 printf("%s %d/%d/%d: ", 2195 (iopb->comm == XDCMD_RD) ? "read" : "write", 2196 iopb->cylno, iopb->headno, iopb->sectno); 2197 printf("%s", xdc_e2str(error)); 2198 2199 if (still_trying) 2200 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2201 else 2202 if (iorq->errno == 0) 2203 printf(" [recovered in %d tries]", iorq->tries); 2204 2205 printf("\n"); 2206 } 2207 2208 /* 2209 * xdc_error: non-fatal error encountered... recover. 2210 * return AOK if resubmitted, return FAIL if this iopb is done 2211 */ 2212 int 2213 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2214 struct xdc_softc *xdcsc; 2215 struct xd_iorq *iorq; 2216 struct xd_iopb *iopb; 2217 int rqno, comm; 2218 2219 { 2220 int errno = iorq->errno; 2221 int erract = errno & XD_ERA_MASK; 2222 int oldmode, advance; 2223 #ifdef __sparc__ 2224 int i; 2225 #endif 2226 2227 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2228 oldmode = iorq->mode; 2229 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2230 xdcsc->ndone++; 2231 /* make xdc_start ignore us */ 2232 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2233 iorq->mode = oldmode; 2234 xdcsc->ndone--; 2235 } 2236 /* check for read/write to a sector in bad144 table if bad: redirect 2237 * request to bad144 area */ 2238 2239 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2240 (iorq->mode & XD_MODE_B144) == 0) { 2241 advance = iorq->sectcnt - iopb->sectcnt; 2242 XDC_ADVANCE(iorq, advance); 2243 #ifdef __sparc__ 2244 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2245 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2246 iorq->blockno % iorq->xd->nsect)) != -1) { 2247 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2248 * redirect */ 2249 iopb->errno = iopb->done = iopb->errs = 0; 2250 iopb->sectcnt = 1; 2251 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2252 /* second to last acyl */ 2253 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2254 * standard */ 2255 iopb->headno = i / iorq->xd->nhead; 2256 iopb->sectno = i % iorq->xd->nhead; 2257 XDC_HWAIT(xdcsc, rqno); 2258 xdc_start(xdcsc, 1); /* resubmit */ 2259 return (XD_ERR_AOK); /* recovered! */ 2260 } 2261 #endif 2262 } 2263 2264 /* 2265 * it isn't a bad144 sector, must be real error! see if we can retry 2266 * it? 2267 */ 2268 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2269 xdc_perror(iorq, iopb, 1); /* inform of error state 2270 * change */ 2271 iorq->lasterror = errno; 2272 2273 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2274 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2275 iorq->tries++; 2276 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2277 XDC_HWAIT(xdcsc, rqno); 2278 xdc_start(xdcsc, 1); /* restart */ 2279 return (XD_ERR_AOK); /* recovered! */ 2280 } 2281 2282 /* failed to recover from this error */ 2283 return (XD_ERR_FAIL); 2284 } 2285 2286 /* 2287 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2288 */ 2289 void 2290 xdc_tick(arg) 2291 void *arg; 2292 2293 { 2294 struct xdc_softc *xdcsc = arg; 2295 int lcv, s, reset = 0; 2296 #ifdef XDC_DIAG 2297 int wait, run, free, done, whd = 0; 2298 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2299 s = splbio(); 2300 wait = xdcsc->nwait; 2301 run = xdcsc->nrun; 2302 free = xdcsc->nfree; 2303 done = xdcsc->ndone; 2304 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2305 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2306 splx(s); 2307 if (wait + run + free + done != XDC_MAXIOPB) { 2308 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2309 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2310 bzero(mark, sizeof(mark)); 2311 printf("FREE: "); 2312 for (lcv = free; lcv > 0; lcv--) { 2313 printf("%d ", fqc[lcv - 1]); 2314 mark[fqc[lcv - 1]] = 1; 2315 } 2316 printf("\nWAIT: "); 2317 lcv = wait; 2318 while (lcv > 0) { 2319 printf("%d ", wqc[whd]); 2320 mark[wqc[whd]] = 1; 2321 whd = (whd + 1) % XDC_MAXIOPB; 2322 lcv--; 2323 } 2324 printf("\n"); 2325 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2326 if (mark[lcv] == 0) 2327 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2328 lcv, xdcsc->reqs[lcv].mode, 2329 xdcsc->iopbase[lcv].done, 2330 xdcsc->iopbase[lcv].errs, 2331 xdcsc->iopbase[lcv].errno, 2332 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2333 } 2334 } else 2335 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2336 printf("%s: diag: lots of done jobs (%d)\n", 2337 xdcsc->sc_dev.dv_xname, done); 2338 2339 #endif 2340 #ifdef XDC_DEBUG 2341 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2342 xdcsc->sc_dev.dv_xname, 2343 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2344 xdcsc->ndone); 2345 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2346 if (xdcsc->reqs[lcv].mode) 2347 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2348 lcv, 2349 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2350 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2351 } 2352 #endif 2353 2354 /* reduce ttl for each request if one goes to zero, reset xdc */ 2355 s = splbio(); 2356 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2357 if (xdcsc->reqs[lcv].mode == 0 || 2358 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2359 continue; 2360 xdcsc->reqs[lcv].ttl--; 2361 if (xdcsc->reqs[lcv].ttl == 0) 2362 reset = 1; 2363 } 2364 if (reset) { 2365 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2366 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2367 } 2368 splx(s); 2369 2370 /* until next time */ 2371 2372 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2373 } 2374 2375 /* 2376 * xdc_ioctlcmd: this function provides a user level interface to the 2377 * controller via ioctl. this allows "format" programs to be written 2378 * in user code, and is also useful for some debugging. we return 2379 * an error code. called at user priority. 2380 */ 2381 int 2382 xdc_ioctlcmd(xd, dev, xio) 2383 struct xd_softc *xd; 2384 dev_t dev; 2385 struct xd_iocmd *xio; 2386 2387 { 2388 int s, rqno, dummy; 2389 caddr_t dvmabuf = NULL, buf = NULL; 2390 struct xdc_softc *xdcsc; 2391 int rseg, error; 2392 bus_dma_segment_t seg; 2393 2394 /* check sanity of requested command */ 2395 2396 switch (xio->cmd) { 2397 2398 case XDCMD_NOP: /* no op: everything should be zero */ 2399 if (xio->subfn || xio->dptr || xio->dlen || 2400 xio->block || xio->sectcnt) 2401 return (EINVAL); 2402 break; 2403 2404 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2405 case XDCMD_WR: 2406 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2407 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2408 return (EINVAL); 2409 break; 2410 2411 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2412 return (EINVAL); 2413 2414 case XDCMD_WRP: /* write parameters */ 2415 return (EINVAL);/* not useful, except maybe drive 2416 * parameters... but drive parameters should 2417 * go via disklabel changes */ 2418 2419 case XDCMD_RDP: /* read parameters */ 2420 if (xio->subfn != XDFUN_DRV || 2421 xio->dlen || xio->block || xio->dptr) 2422 return (EINVAL); /* allow read drive params to 2423 * get hw_spt */ 2424 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2425 return (0); 2426 break; 2427 2428 case XDCMD_XRD: /* extended read/write */ 2429 case XDCMD_XWR: 2430 2431 switch (xio->subfn) { 2432 2433 case XDFUN_THD:/* track headers */ 2434 if (xio->sectcnt != xd->hw_spt || 2435 (xio->block % xd->nsect) != 0 || 2436 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2437 xio->dptr == NULL) 2438 return (EINVAL); 2439 xio->sectcnt = 0; 2440 break; 2441 2442 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2443 if (xio->cmd == XDCMD_XRD) 2444 return (EINVAL); /* no XDFUN_VFY */ 2445 if (xio->sectcnt || xio->dlen || 2446 (xio->block % xd->nsect) != 0 || xio->dptr) 2447 return (EINVAL); 2448 break; 2449 2450 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2451 return (EINVAL); /* not yet */ 2452 2453 case XDFUN_DM: /* defect map */ 2454 case XDFUN_DMX:/* defect map (alternate location) */ 2455 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2456 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2457 return (EINVAL); 2458 break; 2459 2460 default: 2461 return (EINVAL); 2462 } 2463 break; 2464 2465 case XDCMD_TST: /* diagnostics */ 2466 return (EINVAL); 2467 2468 default: 2469 return (EINVAL);/* ??? */ 2470 } 2471 2472 xdcsc = xd->parent; 2473 2474 /* create DVMA buffer for request if needed */ 2475 if (xio->dlen) { 2476 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2477 &seg, &rseg, 2478 xio->dlen, &buf, 2479 (bus_addr_t *)&dvmabuf)) != 0) { 2480 return (error); 2481 } 2482 2483 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2484 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2485 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2486 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2487 return (error); 2488 } 2489 } 2490 } 2491 2492 /* do it! */ 2493 2494 error = 0; 2495 s = splbio(); 2496 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2497 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2498 if (rqno == XD_ERR_FAIL) { 2499 error = EIO; 2500 goto done; 2501 } 2502 xio->errno = xdcsc->reqs[rqno].errno; 2503 xio->tries = xdcsc->reqs[rqno].tries; 2504 XDC_DONE(xdcsc, rqno, dummy); 2505 2506 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2507 error = copyout(buf, xio->dptr, xio->dlen); 2508 2509 done: 2510 splx(s); 2511 if (dvmabuf) { 2512 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2513 xio->dlen, buf); 2514 } 2515 return (error); 2516 } 2517 2518 /* 2519 * xdc_e2str: convert error code number into an error string 2520 */ 2521 char * 2522 xdc_e2str(no) 2523 int no; 2524 { 2525 switch (no) { 2526 case XD_ERR_FAIL: 2527 return ("Software fatal error"); 2528 case XD_ERR_AOK: 2529 return ("Successful completion"); 2530 case XD_ERR_ICYL: 2531 return ("Illegal cylinder address"); 2532 case XD_ERR_IHD: 2533 return ("Illegal head address"); 2534 case XD_ERR_ISEC: 2535 return ("Illgal sector address"); 2536 case XD_ERR_CZER: 2537 return ("Count zero"); 2538 case XD_ERR_UIMP: 2539 return ("Unimplemented command"); 2540 case XD_ERR_IF1: 2541 return ("Illegal field length 1"); 2542 case XD_ERR_IF2: 2543 return ("Illegal field length 2"); 2544 case XD_ERR_IF3: 2545 return ("Illegal field length 3"); 2546 case XD_ERR_IF4: 2547 return ("Illegal field length 4"); 2548 case XD_ERR_IF5: 2549 return ("Illegal field length 5"); 2550 case XD_ERR_IF6: 2551 return ("Illegal field length 6"); 2552 case XD_ERR_IF7: 2553 return ("Illegal field length 7"); 2554 case XD_ERR_ISG: 2555 return ("Illegal scatter/gather length"); 2556 case XD_ERR_ISPT: 2557 return ("Not enough sectors per track"); 2558 case XD_ERR_ALGN: 2559 return ("Next IOPB address alignment error"); 2560 case XD_ERR_SGAL: 2561 return ("Scatter/gather address alignment error"); 2562 case XD_ERR_SGEC: 2563 return ("Scatter/gather with auto-ECC"); 2564 case XD_ERR_SECC: 2565 return ("Soft ECC corrected"); 2566 case XD_ERR_SIGN: 2567 return ("ECC ignored"); 2568 case XD_ERR_ASEK: 2569 return ("Auto-seek retry recovered"); 2570 case XD_ERR_RTRY: 2571 return ("Soft retry recovered"); 2572 case XD_ERR_HECC: 2573 return ("Hard data ECC"); 2574 case XD_ERR_NHDR: 2575 return ("Header not found"); 2576 case XD_ERR_NRDY: 2577 return ("Drive not ready"); 2578 case XD_ERR_TOUT: 2579 return ("Operation timeout"); 2580 case XD_ERR_VTIM: 2581 return ("VMEDMA timeout"); 2582 case XD_ERR_DSEQ: 2583 return ("Disk sequencer error"); 2584 case XD_ERR_HDEC: 2585 return ("Header ECC error"); 2586 case XD_ERR_RVFY: 2587 return ("Read verify"); 2588 case XD_ERR_VFER: 2589 return ("Fatail VMEDMA error"); 2590 case XD_ERR_VBUS: 2591 return ("VMEbus error"); 2592 case XD_ERR_DFLT: 2593 return ("Drive faulted"); 2594 case XD_ERR_HECY: 2595 return ("Header error/cyliner"); 2596 case XD_ERR_HEHD: 2597 return ("Header error/head"); 2598 case XD_ERR_NOCY: 2599 return ("Drive not on-cylinder"); 2600 case XD_ERR_SEEK: 2601 return ("Seek error"); 2602 case XD_ERR_ILSS: 2603 return ("Illegal sector size"); 2604 case XD_ERR_SEC: 2605 return ("Soft ECC"); 2606 case XD_ERR_WPER: 2607 return ("Write-protect error"); 2608 case XD_ERR_IRAM: 2609 return ("IRAM self test failure"); 2610 case XD_ERR_MT3: 2611 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2612 case XD_ERR_MT4: 2613 return ("Maintenance test 4 failure (header shift reg)"); 2614 case XD_ERR_MT5: 2615 return ("Maintenance test 5 failure (VMEDMA regs)"); 2616 case XD_ERR_MT6: 2617 return ("Maintenance test 6 failure (REGCEL chip)"); 2618 case XD_ERR_MT7: 2619 return ("Maintenance test 7 failure (buffer parity)"); 2620 case XD_ERR_MT8: 2621 return ("Maintenance test 8 failure (disk FIFO)"); 2622 case XD_ERR_IOCK: 2623 return ("IOPB checksum miscompare"); 2624 case XD_ERR_IODM: 2625 return ("IOPB DMA fatal"); 2626 case XD_ERR_IOAL: 2627 return ("IOPB address alignment error"); 2628 case XD_ERR_FIRM: 2629 return ("Firmware error"); 2630 case XD_ERR_MMOD: 2631 return ("Illegal maintenance mode test number"); 2632 case XD_ERR_ACFL: 2633 return ("ACFAIL asserted"); 2634 default: 2635 return ("Unknown error"); 2636 } 2637 } 2638
Indexes created Tue Sep 30 11:09:46 GMT 2025