1 /* $NetBSD: xd.c,v 1.71 2007/10/19 12:01:23 ad 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@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 1.71 2007/10/19 12:01:23 ad 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/bufq.h> 71 #include <sys/uio.h> 72 #include <sys/malloc.h> 73 #include <sys/device.h> 74 #include <sys/disklabel.h> 75 #include <sys/disk.h> 76 #include <sys/syslog.h> 77 #include <sys/dkbad.h> 78 #include <sys/conf.h> 79 #include <sys/kauth.h> 80 81 #include <sys/bus.h> 82 #include <sys/intr.h> 83 84 #if defined(__sparc__) || defined(sun3) 85 #include <dev/sun/disklabel.h> 86 #endif 87 88 #include <dev/vme/vmereg.h> 89 #include <dev/vme/vmevar.h> 90 91 #include <dev/vme/xdreg.h> 92 #include <dev/vme/xdvar.h> 93 #include <dev/vme/xio.h> 94 95 #include "locators.h" 96 97 /* 98 * macros 99 */ 100 101 /* 102 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 103 */ 104 #define XDC_TWAIT(SC, N) { \ 105 (SC)->waitq[(SC)->waitend] = (N); \ 106 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 107 (SC)->nwait++; \ 108 } 109 110 /* 111 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 112 */ 113 #define XDC_HWAIT(SC, N) { \ 114 (SC)->waithead = ((SC)->waithead == 0) ? \ 115 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 116 (SC)->waitq[(SC)->waithead] = (N); \ 117 (SC)->nwait++; \ 118 } 119 120 /* 121 * XDC_GET_WAITER: gets the first request waiting on the waitq 122 * and removes it (so it can be submitted) 123 */ 124 #define XDC_GET_WAITER(XDCSC, RQ) { \ 125 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 126 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 127 xdcsc->nwait--; \ 128 } 129 130 /* 131 * XDC_FREE: add iorq "N" to SC's free list 132 */ 133 #define XDC_FREE(SC, N) { \ 134 (SC)->freereq[(SC)->nfree++] = (N); \ 135 (SC)->reqs[N].mode = 0; \ 136 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 137 } 138 139 140 /* 141 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 142 */ 143 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 144 145 /* 146 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 147 */ 148 #define XDC_GO(XDC, ADDR) { \ 149 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 150 (ADDR) = ((ADDR) >> 8); \ 151 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 152 (ADDR) = ((ADDR) >> 8); \ 153 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 154 (ADDR) = ((ADDR) >> 8); \ 155 (XDC)->xdc_iopbaddr3 = (ADDR); \ 156 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 157 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 158 } 159 160 /* 161 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 162 * LCV is a counter. If it goes to zero then we timed out. 163 */ 164 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 165 (LCV) = (TIME); \ 166 while ((LCV) > 0) { \ 167 if ((XDC)->xdc_csr & (BITS)) break; \ 168 (LCV) = (LCV) - 1; \ 169 DELAY(1); \ 170 } \ 171 } 172 173 /* 174 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 175 */ 176 #define XDC_DONE(SC,RQ,ER) { \ 177 if ((RQ) == XD_ERR_FAIL) { \ 178 (ER) = (RQ); \ 179 } else { \ 180 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 181 wakeup(&(SC)->ndone); \ 182 (ER) = (SC)->reqs[RQ].errnum; \ 183 XDC_FREE((SC), (RQ)); \ 184 } \ 185 } 186 187 /* 188 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 189 */ 190 #define XDC_ADVANCE(IORQ, N) { \ 191 if (N) { \ 192 (IORQ)->sectcnt -= (N); \ 193 (IORQ)->blockno += (N); \ 194 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 195 } \ 196 } 197 198 /* 199 * note - addresses you can sleep on: 200 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 201 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 202 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 203 * to drop below XDC_SUBWAITLIM) 204 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 205 */ 206 207 208 /* 209 * function prototypes 210 * "xdc_*" functions are internal, all others are external interfaces 211 */ 212 213 extern int pil_to_vme[]; /* from obio.c */ 214 215 /* internals */ 216 int xdc_cmd(struct xdc_softc *, int, int, int, int, int, char *, int); 217 const char *xdc_e2str(int); 218 int xdc_error(struct xdc_softc *, struct xd_iorq *, 219 struct xd_iopb *, int, int); 220 int xdc_ioctlcmd(struct xd_softc *, dev_t dev, struct xd_iocmd *); 221 void xdc_perror(struct xd_iorq *, struct xd_iopb *, int); 222 int xdc_piodriver(struct xdc_softc *, int, int); 223 int xdc_remove_iorq(struct xdc_softc *); 224 int xdc_reset(struct xdc_softc *, int, int, int, struct xd_softc *); 225 inline void xdc_rqinit(struct xd_iorq *, struct xdc_softc *, 226 struct xd_softc *, int, u_long, int, 227 void *, struct buf *); 228 void xdc_rqtopb(struct xd_iorq *, struct xd_iopb *, int, int); 229 void xdc_start(struct xdc_softc *, int); 230 int xdc_startbuf(struct xdc_softc *, struct xd_softc *, struct buf *); 231 int xdc_submit_iorq(struct xdc_softc *, int, int); 232 void xdc_tick(void *); 233 void xdc_xdreset(struct xdc_softc *, struct xd_softc *); 234 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 235 int *, bus_size_t, void **, bus_addr_t *); 236 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 237 int, bus_size_t, void *); 238 239 240 /* machine interrupt hook */ 241 int xdcintr(void *); 242 243 /* autoconf */ 244 int xdcmatch(struct device *, struct cfdata *, void *); 245 void xdcattach(struct device *, struct device *, void *); 246 int xdmatch(struct device *, struct cfdata *, void *); 247 void xdattach(struct device *, struct device *, void *); 248 static int xdc_probe(void *, bus_space_tag_t, bus_space_handle_t); 249 250 static void xddummystrat(struct buf *); 251 int xdgetdisklabel(struct xd_softc *, void *); 252 253 /* XXX - think about this more.. xd_machdep? */ 254 void xdc_md_setup(void); 255 int XDC_DELAY; 256 257 #if defined(__sparc__) 258 #include <sparc/sparc/vaddrs.h> 259 #include <sparc/sparc/cpuvar.h> 260 void xdc_md_setup() 261 { 262 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 263 XDC_DELAY = XDC_DELAY_4_300; 264 else 265 XDC_DELAY = XDC_DELAY_SPARC; 266 } 267 #elif defined(sun3) 268 void xdc_md_setup() 269 { 270 XDC_DELAY = XDC_DELAY_SUN3; 271 } 272 #else 273 void xdc_md_setup() 274 { 275 XDC_DELAY = 0; 276 } 277 #endif 278 279 /* 280 * cfattach's: device driver interface to autoconfig 281 */ 282 283 CFATTACH_DECL(xdc, sizeof(struct xdc_softc), 284 xdcmatch, xdcattach, NULL, NULL); 285 286 CFATTACH_DECL(xd, sizeof(struct xd_softc), 287 xdmatch, xdattach, NULL, NULL); 288 289 extern struct cfdriver xd_cd; 290 291 dev_type_open(xdopen); 292 dev_type_close(xdclose); 293 dev_type_read(xdread); 294 dev_type_write(xdwrite); 295 dev_type_ioctl(xdioctl); 296 dev_type_strategy(xdstrategy); 297 dev_type_dump(xddump); 298 dev_type_size(xdsize); 299 300 const struct bdevsw xd_bdevsw = { 301 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 302 }; 303 304 const struct cdevsw xd_cdevsw = { 305 xdopen, xdclose, xdread, xdwrite, xdioctl, 306 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 307 }; 308 309 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 310 int driveno; /* unit number */ 311 int fullmode; /* submit mode */ 312 int booting; /* are we booting or not? */ 313 }; 314 315 /* 316 * dkdriver 317 */ 318 319 struct dkdriver xddkdriver = {xdstrategy}; 320 321 /* 322 * start: disk label fix code (XXX) 323 */ 324 325 static void *xd_labeldata; 326 327 static void 328 xddummystrat(bp) 329 struct buf *bp; 330 { 331 if (bp->b_bcount != XDFM_BPS) 332 panic("xddummystrat"); 333 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 334 bp->b_flags |= B_DONE; 335 bp->b_flags &= ~B_BUSY; 336 } 337 338 int 339 xdgetdisklabel(xd, b) 340 struct xd_softc *xd; 341 void *b; 342 { 343 const char *err; 344 #if defined(__sparc__) || defined(sun3) 345 struct sun_disklabel *sdl; 346 #endif 347 348 /* We already have the label data in `b'; setup for dummy strategy */ 349 xd_labeldata = b; 350 351 /* Required parameter for readdisklabel() */ 352 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 353 354 err = readdisklabel(MAKEDISKDEV(0, device_unit(&xd->sc_dev), RAW_PART), 355 xddummystrat, 356 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 357 if (err) { 358 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 359 return(XD_ERR_FAIL); 360 } 361 362 #if defined(__sparc__) || defined(sun3) 363 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 364 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 365 if (sdl->sl_magic == SUN_DKMAGIC) { 366 xd->pcyl = sdl->sl_pcylinders; 367 } else 368 #endif 369 { 370 printf("%s: WARNING: no `pcyl' in disk label.\n", 371 xd->sc_dev.dv_xname); 372 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 373 xd->sc_dk.dk_label->d_acylinders; 374 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 375 xd->sc_dev.dv_xname, xd->pcyl); 376 } 377 378 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 379 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 380 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 381 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 382 xd->sectpercyl = xd->nhead * xd->nsect; 383 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 384 * sun->bsd */ 385 return(XD_ERR_AOK); 386 } 387 388 /* 389 * end: disk label fix code (XXX) 390 */ 391 392 /* 393 * Shorthand for allocating, mapping and loading a DMA buffer 394 */ 395 int 396 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 397 bus_dma_tag_t tag; 398 bus_dmamap_t map; 399 bus_dma_segment_t *seg; 400 int *nsegp; 401 bus_size_t len; 402 void * *kvap; 403 bus_addr_t *dmap; 404 { 405 int nseg; 406 int error; 407 408 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 409 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 410 return (error); 411 } 412 413 if ((error = bus_dmamem_map(tag, seg, nseg, 414 len, kvap, 415 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 416 bus_dmamem_free(tag, seg, nseg); 417 return (error); 418 } 419 420 if ((error = bus_dmamap_load(tag, map, 421 *kvap, len, NULL, 422 BUS_DMA_NOWAIT)) != 0) { 423 bus_dmamem_unmap(tag, *kvap, len); 424 bus_dmamem_free(tag, seg, nseg); 425 return (error); 426 } 427 428 *dmap = map->dm_segs[0].ds_addr; 429 *nsegp = nseg; 430 return (0); 431 } 432 433 void 434 xd_dmamem_free(tag, map, seg, nseg, len, kva) 435 bus_dma_tag_t tag; 436 bus_dmamap_t map; 437 bus_dma_segment_t *seg; 438 int nseg; 439 bus_size_t len; 440 void * kva; 441 { 442 443 bus_dmamap_unload(tag, map); 444 bus_dmamem_unmap(tag, kva, len); 445 bus_dmamem_free(tag, seg, nseg); 446 } 447 448 449 /* 450 * a u t o c o n f i g f u n c t i o n s 451 */ 452 453 /* 454 * xdcmatch: determine if xdc is present or not. we do a 455 * soft reset to detect the xdc. 456 */ 457 458 int 459 xdc_probe(arg, tag, handle) 460 void *arg; 461 bus_space_tag_t tag; 462 bus_space_handle_t handle; 463 { 464 struct xdc *xdc = (void *)handle; /* XXX */ 465 int del = 0; 466 467 xdc->xdc_csr = XDC_RESET; 468 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 469 return (del > 0 ? 0 : EIO); 470 } 471 472 int xdcmatch(parent, cf, aux) 473 struct device *parent; 474 struct cfdata *cf; 475 void *aux; 476 { 477 struct vme_attach_args *va = aux; 478 vme_chipset_tag_t ct = va->va_vct; 479 vme_am_t mod; 480 int error; 481 482 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 483 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 484 return (0); 485 486 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 487 mod, VME_D32, xdc_probe, 0); 488 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 489 490 return (error == 0); 491 } 492 493 /* 494 * xdcattach: attach controller 495 */ 496 void 497 xdcattach(parent, self, aux) 498 struct device *parent, *self; 499 void *aux; 500 501 { 502 struct vme_attach_args *va = aux; 503 vme_chipset_tag_t ct = va->va_vct; 504 bus_space_tag_t bt; 505 bus_space_handle_t bh; 506 vme_intr_handle_t ih; 507 vme_am_t mod; 508 struct xdc_softc *xdc = (void *) self; 509 struct xdc_attach_args xa; 510 int lcv, rqno, error; 511 struct xd_iopb_ctrl *ctl; 512 bus_dma_segment_t seg; 513 int rseg; 514 vme_mapresc_t resc; 515 bus_addr_t busaddr; 516 517 xdc_md_setup(); 518 519 /* get addressing and intr level stuff from autoconfig and load it 520 * into our xdc_softc. */ 521 522 xdc->dmatag = va->va_bdt; 523 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 524 525 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 526 panic("xdc: vme alloc"); 527 528 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 529 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 530 panic("xdc: vme_map"); 531 532 xdc->xdc = (struct xdc *) bh; /* XXX */ 533 xdc->ipl = va->ilevel; 534 xdc->vector = va->ivector; 535 536 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 537 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 538 539 /* 540 * allocate and zero buffers 541 * 542 * note: we simplify the code by allocating the max number of iopbs and 543 * iorq's up front. thus, we avoid linked lists and the costs 544 * associated with them in exchange for wasting a little memory. 545 */ 546 547 /* Get DMA handle for misc. transfers */ 548 if ((error = vme_dmamap_create( 549 ct, /* VME chip tag */ 550 MAXPHYS, /* size */ 551 VME_AM_A24, /* address modifier */ 552 VME_D32, /* data size */ 553 0, /* swap */ 554 1, /* nsegments */ 555 MAXPHYS, /* maxsegsz */ 556 0, /* boundary */ 557 BUS_DMA_NOWAIT, 558 &xdc->auxmap)) != 0) { 559 560 printf("%s: DMA buffer map create error %d\n", 561 xdc->sc_dev.dv_xname, error); 562 return; 563 } 564 565 566 /* Get DMA handle for mapping iorq descriptors */ 567 if ((error = vme_dmamap_create( 568 ct, /* VME chip tag */ 569 XDC_MAXIOPB * sizeof(struct xd_iopb), 570 VME_AM_A24, /* address modifier */ 571 VME_D32, /* data size */ 572 0, /* swap */ 573 1, /* nsegments */ 574 XDC_MAXIOPB * sizeof(struct xd_iopb), 575 0, /* boundary */ 576 BUS_DMA_NOWAIT, 577 &xdc->iopmap)) != 0) { 578 579 printf("%s: DMA buffer map create error %d\n", 580 xdc->sc_dev.dv_xname, error); 581 return; 582 } 583 584 /* Get DMA buffer for iorq descriptors */ 585 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 586 XDC_MAXIOPB * sizeof(struct xd_iopb), 587 (void **)&xdc->iopbase, 588 &busaddr)) != 0) { 589 printf("%s: DMA buffer alloc error %d\n", 590 xdc->sc_dev.dv_xname, error); 591 return; 592 } 593 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 594 595 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 596 597 xdc->reqs = (struct xd_iorq *) 598 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 599 M_DEVBUF, M_NOWAIT|M_ZERO); 600 if (xdc->reqs == NULL) 601 panic("xdc malloc"); 602 603 /* init free list, iorq to iopb pointers, and non-zero fields in the 604 * iopb which never change. */ 605 606 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 607 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 608 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 609 xdc->freereq[lcv] = lcv; 610 xdc->iopbase[lcv].fixd = 1; /* always the same */ 611 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 612 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 613 614 if ((error = vme_dmamap_create( 615 ct, /* VME chip tag */ 616 MAXPHYS, /* size */ 617 VME_AM_A24, /* address modifier */ 618 VME_D32, /* data size */ 619 0, /* swap */ 620 1, /* nsegments */ 621 MAXPHYS, /* maxsegsz */ 622 0, /* boundary */ 623 BUS_DMA_NOWAIT, 624 &xdc->reqs[lcv].dmamap)) != 0) { 625 626 printf("%s: DMA buffer map create error %d\n", 627 xdc->sc_dev.dv_xname, error); 628 return; 629 } 630 } 631 xdc->nfree = XDC_MAXIOPB; 632 xdc->nrun = 0; 633 xdc->waithead = xdc->waitend = xdc->nwait = 0; 634 xdc->ndone = 0; 635 636 /* init queue of waiting bufs */ 637 638 bufq_alloc(&xdc->sc_wq, "fcfs", 0); 639 callout_init(&xdc->sc_tick_ch, 0); 640 641 /* 642 * section 7 of the manual tells us how to init the controller: 643 * - read controller parameters (6/0) 644 * - write controller parameters (5/0) 645 */ 646 647 /* read controller parameters and insure we have a 753/7053 */ 648 649 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 650 if (rqno == XD_ERR_FAIL) { 651 printf(": couldn't read controller params\n"); 652 return; /* shouldn't ever happen */ 653 } 654 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 655 if (ctl->ctype != XDCT_753) { 656 if (xdc->reqs[rqno].errnum) 657 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errnum)); 658 printf(": doesn't identify as a 753/7053\n"); 659 XDC_DONE(xdc, rqno, error); 660 return; 661 } 662 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 663 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 664 XDC_DONE(xdc, rqno, error); 665 666 /* now write controller parameters (xdc_cmd sets all params for us) */ 667 668 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 669 XDC_DONE(xdc, rqno, error); 670 if (error) { 671 printf("%s: controller config error: %s\n", 672 xdc->sc_dev.dv_xname, xdc_e2str(error)); 673 return; 674 } 675 676 /* link in interrupt with higher level software */ 677 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 678 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 679 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 680 xdc->sc_dev.dv_xname, "intr"); 681 682 683 /* now we must look for disks using autoconfig */ 684 xa.fullmode = XD_SUB_POLL; 685 xa.booting = 1; 686 687 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 688 (void) config_found(self, (void *) &xa, NULL); 689 690 /* start the watchdog clock */ 691 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 692 693 } 694 695 /* 696 * xdmatch: probe for disk. 697 * 698 * note: we almost always say disk is present. this allows us to 699 * spin up and configure a disk after the system is booted (we can 700 * call xdattach!). 701 */ 702 int 703 xdmatch(parent, cf, aux) 704 struct device *parent; 705 struct cfdata *cf; 706 void *aux; 707 { 708 struct xdc_attach_args *xa = aux; 709 710 /* looking for autoconf wildcard or exact match */ 711 712 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 713 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 714 return 0; 715 716 return 1; 717 718 } 719 720 /* 721 * xdattach: attach a disk. this can be called from autoconf and also 722 * from xdopen/xdstrategy. 723 */ 724 void 725 xdattach(parent, self, aux) 726 struct device *parent, *self; 727 void *aux; 728 729 { 730 struct xd_softc *xd = (void *) self; 731 struct xdc_softc *xdc = (void *) parent; 732 struct xdc_attach_args *xa = aux; 733 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 734 struct xd_iopb_drive *driopb; 735 struct dkbad *dkb; 736 int rseg, error; 737 bus_dma_segment_t seg; 738 bus_addr_t busaddr; 739 void * dmaddr; 740 char * buf; 741 742 /* 743 * Always re-initialize the disk structure. We want statistics 744 * to start with a clean slate. 745 */ 746 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 747 748 /* if booting, init the xd_softc */ 749 750 if (xa->booting) { 751 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 752 xd->flags = 0; 753 xd->parent = xdc; 754 } 755 xd->xd_drive = xa->driveno; 756 fmode = xa->fullmode; 757 xdc->sc_drives[xa->driveno] = xd; 758 759 /* if not booting, make sure we are the only process in the attach for 760 * this drive. if locked out, sleep on it. */ 761 762 if (!xa->booting) { 763 s = splbio(); 764 while (xd->state == XD_DRIVE_ATTACHING) { 765 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 766 splx(s); 767 return; 768 } 769 } 770 printf("%s at %s", 771 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 772 } 773 774 /* we now have control */ 775 xd->state = XD_DRIVE_ATTACHING; 776 newstate = XD_DRIVE_UNKNOWN; 777 778 buf = NULL; 779 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 780 XDFM_BPS, 781 (void **)&buf, 782 &busaddr)) != 0) { 783 printf("%s: DMA buffer alloc error %d\n", 784 xdc->sc_dev.dv_xname, error); 785 return; 786 } 787 dmaddr = (void *)(u_long)BUS_ADDR_PADDR(busaddr); 788 789 /* first try and reset the drive */ 790 791 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 792 XDC_DONE(xdc, rqno, error); 793 if (error == XD_ERR_NRDY) { 794 printf(" drive %d: off-line\n", xa->driveno); 795 goto done; 796 } 797 if (error) { 798 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 799 goto done; 800 } 801 printf(" drive %d: ready\n", xa->driveno); 802 803 /* now set format parameters */ 804 805 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 806 XDC_DONE(xdc, rqno, error); 807 if (error) { 808 printf("%s: write format parameters failed: %s\n", 809 xd->sc_dev.dv_xname, xdc_e2str(error)); 810 goto done; 811 } 812 813 /* get drive parameters */ 814 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 815 if (rqno != XD_ERR_FAIL) { 816 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 817 spt = driopb->sectpertrk; 818 } 819 XDC_DONE(xdc, rqno, error); 820 if (error) { 821 printf("%s: read drive parameters failed: %s\n", 822 xd->sc_dev.dv_xname, xdc_e2str(error)); 823 goto done; 824 } 825 826 /* 827 * now set drive parameters (to semi-bogus values) so we can read the 828 * disk label. 829 */ 830 xd->pcyl = xd->ncyl = 1; 831 xd->acyl = 0; 832 xd->nhead = 1; 833 xd->nsect = 1; 834 xd->sectpercyl = 1; 835 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 836 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 837 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 838 XDC_DONE(xdc, rqno, error); 839 if (error) { 840 printf("%s: write drive parameters failed: %s\n", 841 xd->sc_dev.dv_xname, xdc_e2str(error)); 842 goto done; 843 } 844 845 /* read disk label */ 846 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 847 XDC_DONE(xdc, rqno, error); 848 if (error) { 849 printf("%s: reading disk label failed: %s\n", 850 xd->sc_dev.dv_xname, xdc_e2str(error)); 851 goto done; 852 } 853 newstate = XD_DRIVE_NOLABEL; 854 855 xd->hw_spt = spt; 856 /* Attach the disk: must be before getdisklabel to malloc label */ 857 disk_init(&xd->sc_dk, xd->sc_dev.dv_xname, &xddkdriver); 858 disk_attach(&xd->sc_dk); 859 860 if (xdgetdisklabel(xd, buf) != XD_ERR_AOK) 861 goto done; 862 863 /* inform the user of what is up */ 864 printf("%s: <%s>, pcyl %d, hw_spt %d\n", xd->sc_dev.dv_xname, 865 buf, xd->pcyl, spt); 866 mb = xd->ncyl * (xd->nhead * xd->nsect) / (1048576 / XDFM_BPS); 867 printf("%s: %dMB, %d cyl, %d head, %d sec, %d bytes/sec\n", 868 xd->sc_dev.dv_xname, mb, xd->ncyl, xd->nhead, xd->nsect, 869 XDFM_BPS); 870 871 /* now set the real drive parameters! */ 872 873 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 874 XDC_DONE(xdc, rqno, error); 875 if (error) { 876 printf("%s: write real drive parameters failed: %s\n", 877 xd->sc_dev.dv_xname, xdc_e2str(error)); 878 goto done; 879 } 880 newstate = XD_DRIVE_ONLINE; 881 882 /* 883 * read bad144 table. this table resides on the first sector of the 884 * last track of the disk (i.e. second cyl of "acyl" area). 885 */ 886 887 blk = (xd->ncyl + xd->acyl - 1) * (xd->nhead * xd->nsect) + /* last cyl */ 888 (xd->nhead - 1) * xd->nsect; /* last head */ 889 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, blk, 1, dmaddr, fmode); 890 XDC_DONE(xdc, rqno, error); 891 if (error) { 892 printf("%s: reading bad144 failed: %s\n", 893 xd->sc_dev.dv_xname, xdc_e2str(error)); 894 goto done; 895 } 896 897 /* check dkbad for sanity */ 898 dkb = (struct dkbad *) buf; 899 for (lcv = 0; lcv < 126; lcv++) { 900 if ((dkb->bt_bad[lcv].bt_cyl == 0xffff || 901 dkb->bt_bad[lcv].bt_cyl == 0) && 902 dkb->bt_bad[lcv].bt_trksec == 0xffff) 903 continue; /* blank */ 904 if (dkb->bt_bad[lcv].bt_cyl >= xd->ncyl) 905 break; 906 if ((dkb->bt_bad[lcv].bt_trksec >> 8) >= xd->nhead) 907 break; 908 if ((dkb->bt_bad[lcv].bt_trksec & 0xff) >= xd->nsect) 909 break; 910 } 911 if (lcv != 126) { 912 printf("%s: warning: invalid bad144 sector!\n", 913 xd->sc_dev.dv_xname); 914 } else { 915 bcopy(buf, &xd->dkb, XDFM_BPS); 916 } 917 918 done: 919 if (buf != NULL) { 920 xd_dmamem_free(xdc->dmatag, xdc->auxmap, 921 &seg, rseg, XDFM_BPS, buf); 922 } 923 924 xd->state = newstate; 925 if (!xa->booting) { 926 wakeup(&xd->state); 927 splx(s); 928 } 929 } 930 931 /* 932 * end of autoconfig functions 933 */ 934 935 /* 936 * { b , c } d e v s w f u n c t i o n s 937 */ 938 939 /* 940 * xdclose: close device 941 */ 942 int 943 xdclose(dev, flag, fmt, l) 944 dev_t dev; 945 int flag, fmt; 946 struct lwp *l; 947 { 948 struct xd_softc *xd = xd_cd.cd_devs[DISKUNIT(dev)]; 949 int part = DISKPART(dev); 950 951 /* clear mask bits */ 952 953 switch (fmt) { 954 case S_IFCHR: 955 xd->sc_dk.dk_copenmask &= ~(1 << part); 956 break; 957 case S_IFBLK: 958 xd->sc_dk.dk_bopenmask &= ~(1 << part); 959 break; 960 } 961 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 962 963 return 0; 964 } 965 966 /* 967 * xddump: crash dump system 968 */ 969 int 970 xddump(dev, blkno, va, size) 971 dev_t dev; 972 daddr_t blkno; 973 void *va; 974 size_t size; 975 { 976 int unit, part; 977 struct xd_softc *xd; 978 979 unit = DISKUNIT(dev); 980 if (unit >= xd_cd.cd_ndevs) 981 return ENXIO; 982 part = DISKPART(dev); 983 984 xd = xd_cd.cd_devs[unit]; 985 986 printf("%s%c: crash dump not supported (yet)\n", xd->sc_dev.dv_xname, 987 'a' + part); 988 989 return ENXIO; 990 991 /* outline: globals: "dumplo" == sector number of partition to start 992 * dump at (convert to physical sector with partition table) 993 * "dumpsize" == size of dump in clicks "physmem" == size of physical 994 * memory (clicks, ctob() to get bytes) (normal case: dumpsize == 995 * physmem) 996 * 997 * dump a copy of physical memory to the dump device starting at sector 998 * "dumplo" in the swap partition (make sure > 0). map in pages as 999 * we go. use polled I/O. 1000 * 1001 * XXX how to handle NON_CONTIG? */ 1002 1003 } 1004 1005 /* 1006 * xdioctl: ioctls on XD drives. based on ioctl's of other netbsd disks. 1007 */ 1008 int 1009 xdioctl(dev, command, addr, flag, l) 1010 dev_t dev; 1011 u_long command; 1012 void *addr; 1013 int flag; 1014 struct lwp *l; 1015 1016 { 1017 struct xd_softc *xd; 1018 struct xd_iocmd *xio; 1019 int error, s, unit; 1020 #ifdef __HAVE_OLD_DISKLABEL 1021 struct disklabel newlabel; 1022 #endif 1023 struct disklabel *lp; 1024 1025 unit = DISKUNIT(dev); 1026 1027 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1028 return (ENXIO); 1029 1030 /* switch on ioctl type */ 1031 1032 switch (command) { 1033 case DIOCSBAD: /* set bad144 info */ 1034 if ((flag & FWRITE) == 0) 1035 return EBADF; 1036 s = splbio(); 1037 bcopy(addr, &xd->dkb, sizeof(xd->dkb)); 1038 splx(s); 1039 return 0; 1040 1041 case DIOCGDINFO: /* get disk label */ 1042 bcopy(xd->sc_dk.dk_label, addr, sizeof(struct disklabel)); 1043 return 0; 1044 #ifdef __HAVE_OLD_DISKLABEL 1045 case ODIOCGDINFO: 1046 newlabel = *(xd->sc_dk.dk_label); 1047 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1048 return ENOTTY; 1049 memcpy(addr, &newlabel, sizeof (struct olddisklabel)); 1050 return 0; 1051 #endif 1052 1053 case DIOCGPART: /* get partition info */ 1054 ((struct partinfo *) addr)->disklab = xd->sc_dk.dk_label; 1055 ((struct partinfo *) addr)->part = 1056 &xd->sc_dk.dk_label->d_partitions[DISKPART(dev)]; 1057 return 0; 1058 1059 case DIOCSDINFO: /* set disk label */ 1060 #ifdef __HAVE_OLD_DISKLABEL 1061 case ODIOCSDINFO: 1062 if (command == ODIOCSDINFO) { 1063 memset(&newlabel, 0, sizeof newlabel); 1064 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1065 lp = &newlabel; 1066 } else 1067 #endif 1068 lp = (struct disklabel *)addr; 1069 1070 if ((flag & FWRITE) == 0) 1071 return EBADF; 1072 error = setdisklabel(xd->sc_dk.dk_label, 1073 lp, /* xd->sc_dk.dk_openmask : */ 0, 1074 xd->sc_dk.dk_cpulabel); 1075 if (error == 0) { 1076 if (xd->state == XD_DRIVE_NOLABEL) 1077 xd->state = XD_DRIVE_ONLINE; 1078 } 1079 return error; 1080 1081 case DIOCWLABEL: /* change write status of disk label */ 1082 if ((flag & FWRITE) == 0) 1083 return EBADF; 1084 if (*(int *) addr) 1085 xd->flags |= XD_WLABEL; 1086 else 1087 xd->flags &= ~XD_WLABEL; 1088 return 0; 1089 1090 case DIOCWDINFO: /* write disk label */ 1091 #ifdef __HAVE_OLD_DISKLABEL 1092 case ODIOCWDINFO: 1093 if (command == ODIOCWDINFO) { 1094 memset(&newlabel, 0, sizeof newlabel); 1095 memcpy(&newlabel, addr, sizeof (struct olddisklabel)); 1096 lp = &newlabel; 1097 } else 1098 #endif 1099 lp = (struct disklabel *)addr; 1100 1101 if ((flag & FWRITE) == 0) 1102 return EBADF; 1103 error = setdisklabel(xd->sc_dk.dk_label, 1104 lp, /* xd->sc_dk.dk_openmask : */ 0, 1105 xd->sc_dk.dk_cpulabel); 1106 if (error == 0) { 1107 if (xd->state == XD_DRIVE_NOLABEL) 1108 xd->state = XD_DRIVE_ONLINE; 1109 1110 /* Simulate opening partition 0 so write succeeds. */ 1111 xd->sc_dk.dk_openmask |= (1 << 0); 1112 error = writedisklabel(MAKEDISKDEV(major(dev), 1113 DISKUNIT(dev), RAW_PART), 1114 xdstrategy, xd->sc_dk.dk_label, 1115 xd->sc_dk.dk_cpulabel); 1116 xd->sc_dk.dk_openmask = 1117 xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1118 } 1119 return error; 1120 1121 case DIOSXDCMD: 1122 xio = (struct xd_iocmd *) addr; 1123 if ((error = kauth_authorize_generic(l->l_cred, 1124 KAUTH_GENERIC_ISSUSER, NULL)) != 0) 1125 return (error); 1126 return (xdc_ioctlcmd(xd, dev, xio)); 1127 1128 default: 1129 return ENOTTY; 1130 } 1131 } 1132 /* 1133 * xdopen: open drive 1134 */ 1135 1136 int 1137 xdopen(dev, flag, fmt, l) 1138 dev_t dev; 1139 int flag, fmt; 1140 struct lwp *l; 1141 { 1142 int unit, part; 1143 struct xd_softc *xd; 1144 struct xdc_attach_args xa; 1145 1146 /* first, could it be a valid target? */ 1147 1148 unit = DISKUNIT(dev); 1149 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1150 return (ENXIO); 1151 part = DISKPART(dev); 1152 1153 /* do we need to attach the drive? */ 1154 1155 if (xd->state == XD_DRIVE_UNKNOWN) { 1156 xa.driveno = xd->xd_drive; 1157 xa.fullmode = XD_SUB_WAIT; 1158 xa.booting = 0; 1159 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1160 if (xd->state == XD_DRIVE_UNKNOWN) { 1161 return (EIO); 1162 } 1163 } 1164 /* check for partition */ 1165 1166 if (part != RAW_PART && 1167 (part >= xd->sc_dk.dk_label->d_npartitions || 1168 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1169 return (ENXIO); 1170 } 1171 /* set open masks */ 1172 1173 switch (fmt) { 1174 case S_IFCHR: 1175 xd->sc_dk.dk_copenmask |= (1 << part); 1176 break; 1177 case S_IFBLK: 1178 xd->sc_dk.dk_bopenmask |= (1 << part); 1179 break; 1180 } 1181 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1182 1183 return 0; 1184 } 1185 1186 int 1187 xdread(dev, uio, flags) 1188 dev_t dev; 1189 struct uio *uio; 1190 int flags; 1191 { 1192 1193 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1194 } 1195 1196 int 1197 xdwrite(dev, uio, flags) 1198 dev_t dev; 1199 struct uio *uio; 1200 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) 1213 dev_t dev; 1214 1215 { 1216 struct xd_softc *xdsc; 1217 int unit, part, size, omask; 1218 1219 /* valid unit? */ 1220 unit = DISKUNIT(dev); 1221 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1222 return (-1); 1223 1224 part = DISKPART(dev); 1225 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1226 1227 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1228 return (-1); 1229 1230 /* do it */ 1231 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1232 size = -1; /* only give valid size for swap partitions */ 1233 else 1234 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1235 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1236 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1237 return (-1); 1238 return (size); 1239 } 1240 /* 1241 * xdstrategy: buffering system interface to xd. 1242 */ 1243 1244 void 1245 xdstrategy(bp) 1246 struct buf *bp; 1247 1248 { 1249 struct xd_softc *xd; 1250 struct xdc_softc *parent; 1251 int s, unit; 1252 struct xdc_attach_args xa; 1253 1254 unit = DISKUNIT(bp->b_dev); 1255 1256 /* check for live device */ 1257 1258 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1259 bp->b_blkno < 0 || 1260 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1261 bp->b_error = EINVAL; 1262 goto done; 1263 } 1264 /* do we need to attach the drive? */ 1265 1266 if (xd->state == XD_DRIVE_UNKNOWN) { 1267 xa.driveno = xd->xd_drive; 1268 xa.fullmode = XD_SUB_WAIT; 1269 xa.booting = 0; 1270 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1271 if (xd->state == XD_DRIVE_UNKNOWN) { 1272 bp->b_error = EIO; 1273 goto done; 1274 } 1275 } 1276 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1277 /* no I/O to unlabeled disks, unless raw partition */ 1278 bp->b_error = EIO; 1279 goto done; 1280 } 1281 /* short circuit zero length request */ 1282 1283 if (bp->b_bcount == 0) 1284 goto done; 1285 1286 /* check bounds with label (disksubr.c). Determine the size of the 1287 * transfer, and make sure it is within the boundaries of the 1288 * partition. Adjust transfer if needed, and signal errors or early 1289 * completion. */ 1290 1291 if (bounds_check_with_label(&xd->sc_dk, bp, 1292 (xd->flags & XD_WLABEL) != 0) <= 0) 1293 goto done; 1294 1295 /* 1296 * now we know we have a valid buf structure that we need to do I/O 1297 * on. 1298 * 1299 * note that we don't disksort because the controller has a sorting 1300 * algorithm built into the hardware. 1301 */ 1302 1303 s = splbio(); /* protect the queues */ 1304 1305 /* first, give jobs in front of us a chance */ 1306 parent = xd->parent; 1307 while (parent->nfree > 0 && BUFQ_PEEK(parent->sc_wq) != NULL) 1308 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1309 break; 1310 1311 /* if there are no free iorq's, then we just queue and return. the 1312 * buffs will get picked up later by xdcintr(). 1313 */ 1314 1315 if (parent->nfree == 0) { 1316 BUFQ_PUT(parent->sc_wq, bp); 1317 splx(s); 1318 return; 1319 } 1320 1321 /* now we have free iopb's and we are at splbio... start 'em up */ 1322 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1323 return; 1324 } 1325 1326 /* done! */ 1327 1328 splx(s); 1329 return; 1330 1331 done: /* tells upper layers we are done with this 1332 * buf */ 1333 bp->b_resid = bp->b_bcount; 1334 biodone(bp); 1335 } 1336 /* 1337 * end of {b,c}devsw functions 1338 */ 1339 1340 /* 1341 * i n t e r r u p t f u n c t i o n 1342 * 1343 * xdcintr: hardware interrupt. 1344 */ 1345 int 1346 xdcintr(v) 1347 void *v; 1348 1349 { 1350 struct xdc_softc *xdcsc = v; 1351 1352 /* kick the event counter */ 1353 1354 xdcsc->sc_intrcnt.ev_count++; 1355 1356 /* remove as many done IOPBs as possible */ 1357 1358 xdc_remove_iorq(xdcsc); 1359 1360 /* start any iorq's already waiting */ 1361 1362 xdc_start(xdcsc, XDC_MAXIOPB); 1363 1364 /* fill up any remaining iorq's with queue'd buffers */ 1365 1366 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1367 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1368 break; 1369 1370 return (1); 1371 } 1372 /* 1373 * end of interrupt function 1374 */ 1375 1376 /* 1377 * i n t e r n a l f u n c t i o n s 1378 */ 1379 1380 /* 1381 * xdc_rqinit: fill out the fields of an I/O request 1382 */ 1383 1384 inline void 1385 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1386 struct xd_iorq *rq; 1387 struct xdc_softc *xdc; 1388 struct xd_softc *xd; 1389 int md; 1390 u_long blk; 1391 int cnt; 1392 void *db; 1393 struct buf *bp; 1394 { 1395 rq->xdc = xdc; 1396 rq->xd = xd; 1397 rq->ttl = XDC_MAXTTL + 10; 1398 rq->mode = md; 1399 rq->tries = rq->errnum = rq->lasterror = 0; 1400 rq->blockno = blk; 1401 rq->sectcnt = cnt; 1402 rq->dbuf = db; 1403 rq->buf = bp; 1404 } 1405 /* 1406 * xdc_rqtopb: load up an IOPB based on an iorq 1407 */ 1408 1409 void 1410 xdc_rqtopb(iorq, iopb, cmd, subfun) 1411 struct xd_iorq *iorq; 1412 struct xd_iopb *iopb; 1413 int cmd, subfun; 1414 1415 { 1416 u_long block, dp; 1417 1418 /* standard stuff */ 1419 1420 iopb->errs = iopb->done = 0; 1421 iopb->comm = cmd; 1422 iopb->errnum = iopb->status = 0; 1423 iopb->subfun = subfun; 1424 if (iorq->xd) 1425 iopb->unit = iorq->xd->xd_drive; 1426 else 1427 iopb->unit = 0; 1428 1429 /* check for alternate IOPB format */ 1430 1431 if (cmd == XDCMD_WRP) { 1432 switch (subfun) { 1433 case XDFUN_CTL:{ 1434 struct xd_iopb_ctrl *ctrl = 1435 (struct xd_iopb_ctrl *) iopb; 1436 iopb->lll = 0; 1437 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1438 ? 0 1439 : iorq->xdc->ipl; 1440 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1441 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1442 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1443 XDPC_RBC | XDPC_ECC2; 1444 ctrl->throttle = XDC_THROTTLE; 1445 ctrl->delay = XDC_DELAY; 1446 break; 1447 } 1448 case XDFUN_DRV:{ 1449 struct xd_iopb_drive *drv = 1450 (struct xd_iopb_drive *)iopb; 1451 /* we assume that the disk label has the right 1452 * info */ 1453 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1454 drv->dparam_ipl = (XDC_DPARAM << 3); 1455 else 1456 drv->dparam_ipl = (XDC_DPARAM << 3) | 1457 iorq->xdc->ipl; 1458 drv->maxsect = iorq->xd->nsect - 1; 1459 drv->maxsector = drv->maxsect; 1460 /* note: maxsector != maxsect only if you are 1461 * doing cyl sparing */ 1462 drv->headoff = 0; 1463 drv->maxcyl = iorq->xd->pcyl - 1; 1464 drv->maxhead = iorq->xd->nhead - 1; 1465 break; 1466 } 1467 case XDFUN_FMT:{ 1468 struct xd_iopb_format *form = 1469 (struct xd_iopb_format *) iopb; 1470 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1471 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1472 else 1473 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1474 iorq->xdc->ipl; 1475 form->field1 = XDFM_FIELD1; 1476 form->field2 = XDFM_FIELD2; 1477 form->field3 = XDFM_FIELD3; 1478 form->field4 = XDFM_FIELD4; 1479 form->bytespersec = XDFM_BPS; 1480 form->field6 = XDFM_FIELD6; 1481 form->field7 = XDFM_FIELD7; 1482 break; 1483 } 1484 } 1485 } else { 1486 1487 /* normal IOPB case (harmless to RDP command) */ 1488 1489 iopb->lll = 0; 1490 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1491 ? 0 1492 : iorq->xdc->ipl; 1493 iopb->sectcnt = iorq->sectcnt; 1494 block = iorq->blockno; 1495 if (iorq->xd == NULL || block == 0) { 1496 iopb->sectno = iopb->headno = iopb->cylno = 0; 1497 } else { 1498 iopb->sectno = block % iorq->xd->nsect; 1499 block = block / iorq->xd->nsect; 1500 iopb->headno = block % iorq->xd->nhead; 1501 block = block / iorq->xd->nhead; 1502 iopb->cylno = block; 1503 } 1504 dp = (u_long) iorq->dbuf; 1505 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1506 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1507 ? XDC_ADDRMOD32 1508 : XDC_ADDRMOD; 1509 } 1510 } 1511 1512 /* 1513 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1514 * If you've already got an IORQ, you can call submit directly (currently 1515 * there is no need to do this). NORM requests are handled separately. 1516 */ 1517 int 1518 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1519 struct xdc_softc *xdcsc; 1520 int cmd, subfn, unit, block, scnt; 1521 char *dptr; 1522 int fullmode; 1523 1524 { 1525 int rqno, submode = XD_STATE(fullmode), retry; 1526 struct xd_iorq *iorq; 1527 struct xd_iopb *iopb; 1528 1529 /* get iorq/iopb */ 1530 switch (submode) { 1531 case XD_SUB_POLL: 1532 while (xdcsc->nfree == 0) { 1533 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1534 return (XD_ERR_FAIL); 1535 } 1536 break; 1537 case XD_SUB_WAIT: 1538 retry = 1; 1539 while (retry) { 1540 while (xdcsc->nfree == 0) { 1541 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1542 return (XD_ERR_FAIL); 1543 } 1544 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1545 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1546 return (XD_ERR_FAIL); 1547 } 1548 if (xdcsc->nfree) 1549 retry = 0; /* got it */ 1550 } 1551 break; 1552 default: 1553 return (XD_ERR_FAIL); /* illegal */ 1554 } 1555 if (xdcsc->nfree == 0) 1556 panic("xdcmd nfree"); 1557 rqno = XDC_RQALLOC(xdcsc); 1558 iorq = &xdcsc->reqs[rqno]; 1559 iopb = iorq->iopb; 1560 1561 1562 /* init iorq/iopb */ 1563 1564 xdc_rqinit(iorq, xdcsc, 1565 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1566 fullmode, block, scnt, dptr, NULL); 1567 1568 /* load IOPB from iorq */ 1569 1570 xdc_rqtopb(iorq, iopb, cmd, subfn); 1571 1572 /* submit it for processing */ 1573 1574 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1575 1576 return (rqno); 1577 } 1578 /* 1579 * xdc_startbuf 1580 * start a buffer running, assumes nfree > 0 1581 */ 1582 1583 int 1584 xdc_startbuf(xdcsc, xdsc, bp) 1585 struct xdc_softc *xdcsc; 1586 struct xd_softc *xdsc; 1587 struct buf *bp; 1588 1589 { 1590 int rqno, partno; 1591 struct xd_iorq *iorq; 1592 struct xd_iopb *iopb; 1593 u_long block; 1594 /* void *dbuf;*/ 1595 int error; 1596 1597 if (!xdcsc->nfree) 1598 panic("xdc_startbuf free"); 1599 rqno = XDC_RQALLOC(xdcsc); 1600 iorq = &xdcsc->reqs[rqno]; 1601 iopb = iorq->iopb; 1602 1603 /* get buf */ 1604 1605 if (bp == NULL) { 1606 bp = BUFQ_GET(xdcsc->sc_wq); 1607 if (bp == NULL) 1608 panic("xdc_startbuf bp"); 1609 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1610 } 1611 partno = DISKPART(bp->b_dev); 1612 #ifdef XDC_DEBUG 1613 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1614 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1615 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1616 bp->b_bcount, bp->b_data); 1617 #endif 1618 1619 /* 1620 * load request. we have to calculate the correct block number based 1621 * on partition info. 1622 * 1623 * note that iorq points to the buffer as mapped into DVMA space, 1624 * where as the bp->b_data points to its non-DVMA mapping. 1625 */ 1626 1627 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1628 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1629 1630 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1631 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1632 if (error != 0) { 1633 printf("%s: warning: cannot load DMA map\n", 1634 xdcsc->sc_dev.dv_xname); 1635 XDC_FREE(xdcsc, rqno); 1636 BUFQ_PUT(xdcsc->sc_wq, bp); 1637 return (XD_ERR_FAIL); /* XXX: need some sort of 1638 * call-back scheme here? */ 1639 } 1640 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1641 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1642 ? BUS_DMASYNC_PREREAD 1643 : BUS_DMASYNC_PREWRITE); 1644 1645 /* init iorq and load iopb from it */ 1646 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1647 bp->b_bcount / XDFM_BPS, 1648 (void *)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1649 bp); 1650 1651 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1652 1653 /* Instrumentation. */ 1654 disk_busy(&xdsc->sc_dk); 1655 1656 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1657 1658 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1659 return (XD_ERR_AOK); 1660 } 1661 1662 1663 /* 1664 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1665 * if ok. if it fail returns an error code. type is XD_SUB_*. 1666 * 1667 * note: caller frees iorq in all cases except NORM 1668 * 1669 * return value: 1670 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1671 * WAIT: XD_AOK (success), <error-code> (failed) 1672 * POLL: <same as WAIT> 1673 * NOQ : <same as NORM> 1674 * 1675 * there are three sources for i/o requests: 1676 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1677 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1678 * [3] open/ioctl: these are I/O requests done in the context of a process, 1679 * and the process should block until they are done. 1680 * 1681 * software state is stored in the iorq structure. each iorq has an 1682 * iopb structure. the hardware understands the iopb structure. 1683 * every command must go through an iopb. a 7053 can only handle 1684 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1685 * DVMA space at boot up time. what happens if we run out of iopb's? 1686 * for i/o type [1], the buffers are queued at the "buff" layer and 1687 * picked up later by the interrupt routine. for case [2] the 1688 * programmed i/o driver is called with a special flag that says 1689 * return when one iopb is free. for case [3] the process can sleep 1690 * on the iorq free list until some iopbs are available. 1691 */ 1692 1693 1694 int 1695 xdc_submit_iorq(xdcsc, iorqno, type) 1696 struct xdc_softc *xdcsc; 1697 int iorqno; 1698 int type; 1699 1700 { 1701 u_long iopbaddr; 1702 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1703 1704 #ifdef XDC_DEBUG 1705 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1706 iorqno, type); 1707 #endif 1708 1709 /* first check and see if controller is busy */ 1710 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1711 #ifdef XDC_DEBUG 1712 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1713 #endif 1714 if (type == XD_SUB_NOQ) 1715 return (XD_ERR_FAIL); /* failed */ 1716 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1717 switch (type) { 1718 case XD_SUB_NORM: 1719 return XD_ERR_AOK; /* success */ 1720 case XD_SUB_WAIT: 1721 while (iorq->iopb->done == 0) { 1722 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1723 } 1724 return (iorq->errnum); 1725 case XD_SUB_POLL: 1726 return (xdc_piodriver(xdcsc, iorqno, 0)); 1727 default: 1728 panic("xdc_submit_iorq adding"); 1729 } 1730 } 1731 #ifdef XDC_DEBUG 1732 { 1733 u_char *rio = (u_char *) iorq->iopb; 1734 int sz = sizeof(struct xd_iopb), lcv; 1735 printf("%s: aio #%d [", 1736 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1737 for (lcv = 0; lcv < sz; lcv++) 1738 printf(" %02x", rio[lcv]); 1739 printf("]\n"); 1740 } 1741 #endif /* XDC_DEBUG */ 1742 1743 /* controller not busy, start command */ 1744 iopbaddr = (u_long) iorq->dmaiopb; 1745 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1746 xdcsc->nrun++; 1747 /* command now running, wrap it up */ 1748 switch (type) { 1749 case XD_SUB_NORM: 1750 case XD_SUB_NOQ: 1751 return (XD_ERR_AOK); /* success */ 1752 case XD_SUB_WAIT: 1753 while (iorq->iopb->done == 0) { 1754 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1755 } 1756 return (iorq->errnum); 1757 case XD_SUB_POLL: 1758 return (xdc_piodriver(xdcsc, iorqno, 0)); 1759 default: 1760 panic("xdc_submit_iorq wrap up"); 1761 } 1762 panic("xdc_submit_iorq"); 1763 return 0; /* not reached */ 1764 } 1765 1766 1767 /* 1768 * xdc_piodriver 1769 * 1770 * programmed i/o driver. this function takes over the computer 1771 * and drains off all i/o requests. it returns the status of the iorq 1772 * the caller is interesting in. if freeone is true, then it returns 1773 * when there is a free iorq. 1774 */ 1775 int 1776 xdc_piodriver(xdcsc, iorqno, freeone) 1777 struct xdc_softc *xdcsc; 1778 int iorqno; 1779 int freeone; 1780 1781 { 1782 int nreset = 0; 1783 int retval = 0; 1784 u_long count; 1785 struct xdc *xdc = xdcsc->xdc; 1786 #ifdef XDC_DEBUG 1787 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1788 iorqno, freeone); 1789 #endif 1790 1791 while (xdcsc->nwait || xdcsc->nrun) { 1792 #ifdef XDC_DEBUG 1793 printf("xdc_piodriver: wait=%d, run=%d\n", 1794 xdcsc->nwait, xdcsc->nrun); 1795 #endif 1796 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1797 #ifdef XDC_DEBUG 1798 printf("xdc_piodriver: done wait with count = %d\n", count); 1799 #endif 1800 /* we expect some progress soon */ 1801 if (count == 0 && nreset >= 2) { 1802 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1803 #ifdef XDC_DEBUG 1804 printf("xdc_piodriver: timeout\n"); 1805 #endif 1806 return (XD_ERR_FAIL); 1807 } 1808 if (count == 0) { 1809 if (xdc_reset(xdcsc, 0, 1810 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1811 XD_ERR_FAIL, 1812 0) == XD_ERR_FAIL) 1813 return (XD_ERR_FAIL); /* flushes all but POLL 1814 * requests, resets */ 1815 continue; 1816 } 1817 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1818 if (freeone) { 1819 if (xdcsc->nrun < XDC_MAXIOPB) { 1820 #ifdef XDC_DEBUG 1821 printf("xdc_piodriver: done: one free\n"); 1822 #endif 1823 return (XD_ERR_AOK); 1824 } 1825 continue; /* don't xdc_start */ 1826 } 1827 xdc_start(xdcsc, XDC_MAXIOPB); 1828 } 1829 1830 /* get return value */ 1831 1832 retval = xdcsc->reqs[iorqno].errnum; 1833 1834 #ifdef XDC_DEBUG 1835 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1836 xdcsc->reqs[iorqno].errnum, xdc_e2str(xdcsc->reqs[iorqno].errnum)); 1837 #endif 1838 1839 /* now that we've drained everything, start up any bufs that have 1840 * queued */ 1841 1842 while (xdcsc->nfree > 0 && BUFQ_PEEK(xdcsc->sc_wq) != NULL) 1843 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1844 break; 1845 1846 return (retval); 1847 } 1848 1849 /* 1850 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1851 * we steal iopb[0] for this, but we put it back when we are done. 1852 */ 1853 void 1854 xdc_xdreset(xdcsc, xdsc) 1855 struct xdc_softc *xdcsc; 1856 struct xd_softc *xdsc; 1857 1858 { 1859 struct xd_iopb tmpiopb; 1860 u_long addr; 1861 int del; 1862 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1863 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1864 xdcsc->iopbase->comm = XDCMD_RST; 1865 xdcsc->iopbase->unit = xdsc->xd_drive; 1866 addr = (u_long) xdcsc->dvmaiopb; 1867 XDC_GO(xdcsc->xdc, addr); /* go! */ 1868 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1869 if (del <= 0 || xdcsc->iopbase->errs) { 1870 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1871 xdc_e2str(xdcsc->iopbase->errnum)); 1872 xdcsc->xdc->xdc_csr = XDC_RESET; 1873 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1874 if (del <= 0) 1875 panic("xdc_reset"); 1876 } else { 1877 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1878 } 1879 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1880 } 1881 1882 1883 /* 1884 * xdc_reset: reset everything: requests are marked as errors except 1885 * a polled request (which is resubmitted) 1886 */ 1887 int 1888 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1889 struct xdc_softc *xdcsc; 1890 int quiet, blastmode, error; 1891 struct xd_softc *xdsc; 1892 1893 { 1894 int del = 0, lcv, retval = XD_ERR_AOK; 1895 int oldfree = xdcsc->nfree; 1896 1897 /* soft reset hardware */ 1898 1899 if (!quiet) 1900 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1901 xdcsc->xdc->xdc_csr = XDC_RESET; 1902 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1903 if (del <= 0) { 1904 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1905 retval = XD_ERR_FAIL; 1906 } 1907 if (xdsc) 1908 xdc_xdreset(xdcsc, xdsc); 1909 1910 /* fix queues based on "blast-mode" */ 1911 1912 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1913 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1914 1915 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1916 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1917 XD_STATE(iorq->mode) != XD_SUB_NORM) 1918 /* is it active? */ 1919 continue; 1920 1921 xdcsc->nrun--; /* it isn't running any more */ 1922 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1923 /* failed */ 1924 iorq->errnum = error; 1925 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1926 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1927 case XD_SUB_NORM: 1928 iorq->buf->b_error = EIO; 1929 iorq->buf->b_resid = 1930 iorq->sectcnt * XDFM_BPS; 1931 1932 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1933 iorq->dmamap->dm_mapsize, 1934 (iorq->buf->b_flags & B_READ) 1935 ? BUS_DMASYNC_POSTREAD 1936 : BUS_DMASYNC_POSTWRITE); 1937 1938 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1939 1940 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1941 (xdcsc->reqs[lcv].buf->b_bcount - 1942 xdcsc->reqs[lcv].buf->b_resid), 1943 (iorq->buf->b_flags & B_READ)); 1944 biodone(iorq->buf); 1945 XDC_FREE(xdcsc, lcv); /* add to free list */ 1946 break; 1947 case XD_SUB_WAIT: 1948 wakeup(iorq); 1949 case XD_SUB_POLL: 1950 xdcsc->ndone++; 1951 iorq->mode = 1952 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1953 break; 1954 } 1955 1956 } else { 1957 1958 /* resubmit, put at front of wait queue */ 1959 XDC_HWAIT(xdcsc, lcv); 1960 } 1961 } 1962 1963 /* 1964 * now, if stuff is waiting, start it. 1965 * since we just reset it should go 1966 */ 1967 xdc_start(xdcsc, XDC_MAXIOPB); 1968 1969 /* ok, we did it */ 1970 if (oldfree == 0 && xdcsc->nfree) 1971 wakeup(&xdcsc->nfree); 1972 1973 #ifdef XDC_DIAG 1974 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1975 if (del != XDC_MAXIOPB) 1976 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1977 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1978 else 1979 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1980 printf("%s: diag: lots of done jobs (%d)\n", 1981 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1982 #endif 1983 printf("RESET DONE\n"); 1984 return (retval); 1985 } 1986 /* 1987 * xdc_start: start all waiting buffers 1988 */ 1989 1990 void 1991 xdc_start(xdcsc, maxio) 1992 struct xdc_softc *xdcsc; 1993 int maxio; 1994 1995 { 1996 int rqno; 1997 while (maxio && xdcsc->nwait && 1998 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 1999 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 2000 * param */ 2001 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 2002 panic("xdc_start"); /* should never happen */ 2003 maxio--; 2004 } 2005 } 2006 /* 2007 * xdc_remove_iorq: remove "done" IOPB's. 2008 */ 2009 2010 int 2011 xdc_remove_iorq(xdcsc) 2012 struct xdc_softc *xdcsc; 2013 2014 { 2015 int errnum, rqno, comm, errs; 2016 struct xdc *xdc = xdcsc->xdc; 2017 struct xd_iopb *iopb; 2018 struct xd_iorq *iorq; 2019 struct buf *bp; 2020 2021 if (xdc->xdc_csr & XDC_F_ERROR) { 2022 /* 2023 * FATAL ERROR: should never happen under normal use. This 2024 * error is so bad, you can't even tell which IOPB is bad, so 2025 * we dump them all. 2026 */ 2027 errnum = xdc->xdc_f_err; 2028 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2029 errnum, xdc_e2str(errnum)); 2030 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errnum, 0) != XD_ERR_AOK) { 2031 printf("%s: soft reset failed!\n", 2032 xdcsc->sc_dev.dv_xname); 2033 panic("xdc_remove_iorq: controller DEAD"); 2034 } 2035 return (XD_ERR_AOK); 2036 } 2037 2038 /* 2039 * get iopb that is done 2040 * 2041 * hmm... I used to read the address of the done IOPB off the VME 2042 * registers and calculate the rqno directly from that. that worked 2043 * until I started putting a load on the controller. when loaded, i 2044 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2045 * be set, even after DELAY'ing a while! later on the timeout 2046 * routine would detect IOPBs that were marked "running" but their 2047 * "done" bit was set. rather than dealing directly with this 2048 * problem, it is just easier to look at all running IOPB's for the 2049 * done bit. 2050 */ 2051 if (xdc->xdc_csr & XDC_REMIOPB) { 2052 xdc->xdc_csr = XDC_CLRRIO; 2053 } 2054 2055 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2056 iorq = &xdcsc->reqs[rqno]; 2057 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2058 continue; /* free, or done */ 2059 iopb = &xdcsc->iopbase[rqno]; 2060 if (iopb->done == 0) 2061 continue; /* not done yet */ 2062 2063 #ifdef XDC_DEBUG 2064 { 2065 u_char *rio = (u_char *) iopb; 2066 int sz = sizeof(struct xd_iopb), lcv; 2067 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2068 for (lcv = 0; lcv < sz; lcv++) 2069 printf(" %02x", rio[lcv]); 2070 printf("]\n"); 2071 } 2072 #endif /* XDC_DEBUG */ 2073 2074 xdcsc->nrun--; 2075 2076 comm = iopb->comm; 2077 errs = iopb->errs; 2078 2079 if (errs) 2080 iorq->errnum = iopb->errnum; 2081 else 2082 iorq->errnum = 0; 2083 2084 /* handle non-fatal errors */ 2085 2086 if (errs && 2087 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2088 continue; /* AOK: we resubmitted it */ 2089 2090 2091 /* this iorq is now done (hasn't been restarted or anything) */ 2092 2093 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2094 xdc_perror(iorq, iopb, 0); 2095 2096 /* now, if read/write check to make sure we got all the data 2097 * we needed. (this may not be the case if we got an error in 2098 * the middle of a multisector request). */ 2099 2100 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2101 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2102 /* we just successfully processed a bad144 sector 2103 * note: if we are in bad 144 mode, the pointers have 2104 * been advanced already (see above) and are pointing 2105 * at the bad144 sector. to exit bad144 mode, we 2106 * must advance the pointers 1 sector and issue a new 2107 * request if there are still sectors left to process 2108 * 2109 */ 2110 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2111 2112 /* exit b144 mode */ 2113 iorq->mode = iorq->mode & (~XD_MODE_B144); 2114 2115 if (iorq->sectcnt) { /* more to go! */ 2116 iorq->lasterror = iorq->errnum = iopb->errnum = 0; 2117 iopb->errs = iopb->done = 0; 2118 iorq->tries = 0; 2119 iopb->sectcnt = iorq->sectcnt; 2120 iopb->cylno = iorq->blockno / 2121 iorq->xd->sectpercyl; 2122 iopb->headno = 2123 (iorq->blockno / iorq->xd->nhead) % 2124 iorq->xd->nhead; 2125 iopb->sectno = iorq->blockno % XDFM_BPS; 2126 iopb->daddr = (u_long) iorq->dbuf; 2127 XDC_HWAIT(xdcsc, rqno); 2128 xdc_start(xdcsc, 1); /* resubmit */ 2129 continue; 2130 } 2131 } 2132 /* final cleanup, totally done with this request */ 2133 2134 switch (XD_STATE(iorq->mode)) { 2135 case XD_SUB_NORM: 2136 bp = iorq->buf; 2137 if (errs) { 2138 bp->b_error = EIO; 2139 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2140 } else { 2141 bp->b_resid = 0; /* done */ 2142 } 2143 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2144 iorq->dmamap->dm_mapsize, 2145 (bp->b_flags & B_READ) 2146 ? BUS_DMASYNC_POSTREAD 2147 : BUS_DMASYNC_POSTWRITE); 2148 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2149 2150 disk_unbusy(&iorq->xd->sc_dk, 2151 (bp->b_bcount - bp->b_resid), 2152 (bp->b_flags & B_READ)); 2153 XDC_FREE(xdcsc, rqno); 2154 biodone(bp); 2155 break; 2156 case XD_SUB_WAIT: 2157 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2158 xdcsc->ndone++; 2159 wakeup(iorq); 2160 break; 2161 case XD_SUB_POLL: 2162 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2163 xdcsc->ndone++; 2164 break; 2165 } 2166 } 2167 2168 return (XD_ERR_AOK); 2169 } 2170 2171 /* 2172 * xdc_perror: print error. 2173 * - if still_trying is true: we got an error, retried and got a 2174 * different error. in that case lasterror is the old error, 2175 * and errnum is the new one. 2176 * - if still_trying is not true, then if we ever had an error it 2177 * is in lasterror. also, if iorq->errnum == 0, then we recovered 2178 * from that error (otherwise iorq->errnum == iorq->lasterror). 2179 */ 2180 void 2181 xdc_perror(iorq, iopb, still_trying) 2182 struct xd_iorq *iorq; 2183 struct xd_iopb *iopb; 2184 int still_trying; 2185 2186 { 2187 2188 int error = iorq->lasterror; 2189 2190 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2191 : iorq->xdc->sc_dev.dv_xname); 2192 if (iorq->buf) 2193 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2194 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2195 printf("%s %d/%d/%d: ", 2196 (iopb->comm == XDCMD_RD) ? "read" : "write", 2197 iopb->cylno, iopb->headno, iopb->sectno); 2198 printf("%s", xdc_e2str(error)); 2199 2200 if (still_trying) 2201 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errnum)); 2202 else 2203 if (iorq->errnum == 0) 2204 printf(" [recovered in %d tries]", iorq->tries); 2205 2206 printf("\n"); 2207 } 2208 2209 /* 2210 * xdc_error: non-fatal error encountered... recover. 2211 * return AOK if resubmitted, return FAIL if this iopb is done 2212 */ 2213 int 2214 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2215 struct xdc_softc *xdcsc; 2216 struct xd_iorq *iorq; 2217 struct xd_iopb *iopb; 2218 int rqno, comm; 2219 2220 { 2221 int errnum = iorq->errnum; 2222 int erract = errnum & XD_ERA_MASK; 2223 int oldmode, advance; 2224 #ifdef __sparc__ 2225 int i; 2226 #endif 2227 2228 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2229 oldmode = iorq->mode; 2230 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2231 xdcsc->ndone++; 2232 /* make xdc_start ignore us */ 2233 xdc_reset(xdcsc, 1, XD_RSET_NONE, errnum, iorq->xd); 2234 iorq->mode = oldmode; 2235 xdcsc->ndone--; 2236 } 2237 /* check for read/write to a sector in bad144 table if bad: redirect 2238 * request to bad144 area */ 2239 2240 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2241 (iorq->mode & XD_MODE_B144) == 0) { 2242 advance = iorq->sectcnt - iopb->sectcnt; 2243 XDC_ADVANCE(iorq, advance); 2244 #ifdef __sparc__ 2245 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2246 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2247 iorq->blockno % iorq->xd->nsect)) != -1) { 2248 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2249 * redirect */ 2250 iopb->errnum = iopb->done = iopb->errs = 0; 2251 iopb->sectcnt = 1; 2252 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2253 /* second to last acyl */ 2254 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2255 * standard */ 2256 iopb->headno = i / iorq->xd->nhead; 2257 iopb->sectno = i % iorq->xd->nhead; 2258 XDC_HWAIT(xdcsc, rqno); 2259 xdc_start(xdcsc, 1); /* resubmit */ 2260 return (XD_ERR_AOK); /* recovered! */ 2261 } 2262 #endif 2263 } 2264 2265 /* 2266 * it isn't a bad144 sector, must be real error! see if we can retry 2267 * it? 2268 */ 2269 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2270 xdc_perror(iorq, iopb, 1); /* inform of error state 2271 * change */ 2272 iorq->lasterror = errnum; 2273 2274 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2275 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2276 iorq->tries++; 2277 iorq->errnum = iopb->errnum = iopb->done = iopb->errs = 0; 2278 XDC_HWAIT(xdcsc, rqno); 2279 xdc_start(xdcsc, 1); /* restart */ 2280 return (XD_ERR_AOK); /* recovered! */ 2281 } 2282 2283 /* failed to recover from this error */ 2284 return (XD_ERR_FAIL); 2285 } 2286 2287 /* 2288 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2289 */ 2290 void 2291 xdc_tick(arg) 2292 void *arg; 2293 2294 { 2295 struct xdc_softc *xdcsc = arg; 2296 int lcv, s, reset = 0; 2297 #ifdef XDC_DIAG 2298 int nwait, nrun, nfree, ndone, whd = 0; 2299 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2300 s = splbio(); 2301 nwait = xdcsc->nwait; 2302 nrun = xdcsc->nrun; 2303 nfree = xdcsc->nfree; 2304 ndone = xdcsc->ndone; 2305 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2306 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2307 splx(s); 2308 if (nwait + nrun + nfree + ndone != XDC_MAXIOPB) { 2309 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2310 xdcsc->sc_dev.dv_xname, nwait, nfree, nrun, ndone, 2311 XDC_MAXIOPB); 2312 bzero(mark, sizeof(mark)); 2313 printf("FREE: "); 2314 for (lcv = nfree; lcv > 0; lcv--) { 2315 printf("%d ", fqc[lcv - 1]); 2316 mark[fqc[lcv - 1]] = 1; 2317 } 2318 printf("\nWAIT: "); 2319 lcv = nwait; 2320 while (lcv > 0) { 2321 printf("%d ", wqc[whd]); 2322 mark[wqc[whd]] = 1; 2323 whd = (whd + 1) % XDC_MAXIOPB; 2324 lcv--; 2325 } 2326 printf("\n"); 2327 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2328 if (mark[lcv] == 0) 2329 printf("MARK: running %d: mode %d done %d errs %d errnum 0x%x ttl %d buf %p\n", 2330 lcv, xdcsc->reqs[lcv].mode, 2331 xdcsc->iopbase[lcv].done, 2332 xdcsc->iopbase[lcv].errs, 2333 xdcsc->iopbase[lcv].errnum, 2334 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2335 } 2336 } else 2337 if (ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 2338 printf("%s: diag: lots of done jobs (%d)\n", 2339 xdcsc->sc_dev.dv_xname, ndone); 2340 2341 #endif 2342 #ifdef XDC_DEBUG 2343 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2344 xdcsc->sc_dev.dv_xname, 2345 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2346 xdcsc->ndone); 2347 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2348 if (xdcsc->reqs[lcv].mode) 2349 printf("running %d: mode %d done %d errs %d errnum 0x%x\n", 2350 lcv, 2351 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2352 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errnum); 2353 } 2354 #endif 2355 2356 /* reduce ttl for each request if one goes to zero, reset xdc */ 2357 s = splbio(); 2358 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2359 if (xdcsc->reqs[lcv].mode == 0 || 2360 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2361 continue; 2362 xdcsc->reqs[lcv].ttl--; 2363 if (xdcsc->reqs[lcv].ttl == 0) 2364 reset = 1; 2365 } 2366 if (reset) { 2367 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2368 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2369 } 2370 splx(s); 2371 2372 /* until next time */ 2373 2374 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2375 } 2376 2377 /* 2378 * xdc_ioctlcmd: this function provides a user level interface to the 2379 * controller via ioctl. this allows "format" programs to be written 2380 * in user code, and is also useful for some debugging. we return 2381 * an error code. called at user priority. 2382 */ 2383 int 2384 xdc_ioctlcmd(xd, dev, xio) 2385 struct xd_softc *xd; 2386 dev_t dev; 2387 struct xd_iocmd *xio; 2388 2389 { 2390 int s, rqno, dummy; 2391 char *dvmabuf = NULL, *buf = NULL; 2392 struct xdc_softc *xdcsc; 2393 int rseg, error; 2394 bus_dma_segment_t seg; 2395 2396 /* check sanity of requested command */ 2397 2398 switch (xio->cmd) { 2399 2400 case XDCMD_NOP: /* no op: everything should be zero */ 2401 if (xio->subfn || xio->dptr || xio->dlen || 2402 xio->block || xio->sectcnt) 2403 return (EINVAL); 2404 break; 2405 2406 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2407 case XDCMD_WR: 2408 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2409 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2410 return (EINVAL); 2411 break; 2412 2413 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2414 return (EINVAL); 2415 2416 case XDCMD_WRP: /* write parameters */ 2417 return (EINVAL);/* not useful, except maybe drive 2418 * parameters... but drive parameters should 2419 * go via disklabel changes */ 2420 2421 case XDCMD_RDP: /* read parameters */ 2422 if (xio->subfn != XDFUN_DRV || 2423 xio->dlen || xio->block || xio->dptr) 2424 return (EINVAL); /* allow read drive params to 2425 * get hw_spt */ 2426 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2427 return (0); 2428 break; 2429 2430 case XDCMD_XRD: /* extended read/write */ 2431 case XDCMD_XWR: 2432 2433 switch (xio->subfn) { 2434 2435 case XDFUN_THD:/* track headers */ 2436 if (xio->sectcnt != xd->hw_spt || 2437 (xio->block % xd->nsect) != 0 || 2438 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2439 xio->dptr == NULL) 2440 return (EINVAL); 2441 xio->sectcnt = 0; 2442 break; 2443 2444 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2445 if (xio->cmd == XDCMD_XRD) 2446 return (EINVAL); /* no XDFUN_VFY */ 2447 if (xio->sectcnt || xio->dlen || 2448 (xio->block % xd->nsect) != 0 || xio->dptr) 2449 return (EINVAL); 2450 break; 2451 2452 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2453 return (EINVAL); /* not yet */ 2454 2455 case XDFUN_DM: /* defect map */ 2456 case XDFUN_DMX:/* defect map (alternate location) */ 2457 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2458 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2459 return (EINVAL); 2460 break; 2461 2462 default: 2463 return (EINVAL); 2464 } 2465 break; 2466 2467 case XDCMD_TST: /* diagnostics */ 2468 return (EINVAL); 2469 2470 default: 2471 return (EINVAL);/* ??? */ 2472 } 2473 2474 xdcsc = xd->parent; 2475 2476 /* create DVMA buffer for request if needed */ 2477 if (xio->dlen) { 2478 bus_addr_t busbuf; 2479 2480 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2481 &seg, &rseg, 2482 xio->dlen, (void **)&buf, 2483 &busbuf)) != 0) { 2484 return (error); 2485 } 2486 dvmabuf = (void *)(u_long)BUS_ADDR_PADDR(busbuf); 2487 2488 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2489 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2490 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2491 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2492 return (error); 2493 } 2494 } 2495 } 2496 2497 /* do it! */ 2498 2499 error = 0; 2500 s = splbio(); 2501 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2502 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2503 if (rqno == XD_ERR_FAIL) { 2504 error = EIO; 2505 goto done; 2506 } 2507 xio->errnum = xdcsc->reqs[rqno].errnum; 2508 xio->tries = xdcsc->reqs[rqno].tries; 2509 XDC_DONE(xdcsc, rqno, dummy); 2510 2511 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2512 error = copyout(buf, xio->dptr, xio->dlen); 2513 2514 done: 2515 splx(s); 2516 if (dvmabuf) { 2517 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2518 xio->dlen, buf); 2519 } 2520 return (error); 2521 } 2522 2523 /* 2524 * xdc_e2str: convert error code number into an error string 2525 */ 2526 const char * 2527 xdc_e2str(no) 2528 int no; 2529 { 2530 switch (no) { 2531 case XD_ERR_FAIL: 2532 return ("Software fatal error"); 2533 case XD_ERR_AOK: 2534 return ("Successful completion"); 2535 case XD_ERR_ICYL: 2536 return ("Illegal cylinder address"); 2537 case XD_ERR_IHD: 2538 return ("Illegal head address"); 2539 case XD_ERR_ISEC: 2540 return ("Illgal sector address"); 2541 case XD_ERR_CZER: 2542 return ("Count zero"); 2543 case XD_ERR_UIMP: 2544 return ("Unimplemented command"); 2545 case XD_ERR_IF1: 2546 return ("Illegal field length 1"); 2547 case XD_ERR_IF2: 2548 return ("Illegal field length 2"); 2549 case XD_ERR_IF3: 2550 return ("Illegal field length 3"); 2551 case XD_ERR_IF4: 2552 return ("Illegal field length 4"); 2553 case XD_ERR_IF5: 2554 return ("Illegal field length 5"); 2555 case XD_ERR_IF6: 2556 return ("Illegal field length 6"); 2557 case XD_ERR_IF7: 2558 return ("Illegal field length 7"); 2559 case XD_ERR_ISG: 2560 return ("Illegal scatter/gather length"); 2561 case XD_ERR_ISPT: 2562 return ("Not enough sectors per track"); 2563 case XD_ERR_ALGN: 2564 return ("Next IOPB address alignment error"); 2565 case XD_ERR_SGAL: 2566 return ("Scatter/gather address alignment error"); 2567 case XD_ERR_SGEC: 2568 return ("Scatter/gather with auto-ECC"); 2569 case XD_ERR_SECC: 2570 return ("Soft ECC corrected"); 2571 case XD_ERR_SIGN: 2572 return ("ECC ignored"); 2573 case XD_ERR_ASEK: 2574 return ("Auto-seek retry recovered"); 2575 case XD_ERR_RTRY: 2576 return ("Soft retry recovered"); 2577 case XD_ERR_HECC: 2578 return ("Hard data ECC"); 2579 case XD_ERR_NHDR: 2580 return ("Header not found"); 2581 case XD_ERR_NRDY: 2582 return ("Drive not ready"); 2583 case XD_ERR_TOUT: 2584 return ("Operation timeout"); 2585 case XD_ERR_VTIM: 2586 return ("VMEDMA timeout"); 2587 case XD_ERR_DSEQ: 2588 return ("Disk sequencer error"); 2589 case XD_ERR_HDEC: 2590 return ("Header ECC error"); 2591 case XD_ERR_RVFY: 2592 return ("Read verify"); 2593 case XD_ERR_VFER: 2594 return ("Fatail VMEDMA error"); 2595 case XD_ERR_VBUS: 2596 return ("VMEbus error"); 2597 case XD_ERR_DFLT: 2598 return ("Drive faulted"); 2599 case XD_ERR_HECY: 2600 return ("Header error/cyliner"); 2601 case XD_ERR_HEHD: 2602 return ("Header error/head"); 2603 case XD_ERR_NOCY: 2604 return ("Drive not on-cylinder"); 2605 case XD_ERR_SEEK: 2606 return ("Seek error"); 2607 case XD_ERR_ILSS: 2608 return ("Illegal sector size"); 2609 case XD_ERR_SEC: 2610 return ("Soft ECC"); 2611 case XD_ERR_WPER: 2612 return ("Write-protect error"); 2613 case XD_ERR_IRAM: 2614 return ("IRAM self test failure"); 2615 case XD_ERR_MT3: 2616 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2617 case XD_ERR_MT4: 2618 return ("Maintenance test 4 failure (header shift reg)"); 2619 case XD_ERR_MT5: 2620 return ("Maintenance test 5 failure (VMEDMA regs)"); 2621 case XD_ERR_MT6: 2622 return ("Maintenance test 6 failure (REGCEL chip)"); 2623 case XD_ERR_MT7: 2624 return ("Maintenance test 7 failure (buffer parity)"); 2625 case XD_ERR_MT8: 2626 return ("Maintenance test 8 failure (disk FIFO)"); 2627 case XD_ERR_IOCK: 2628 return ("IOPB checksum miscompare"); 2629 case XD_ERR_IODM: 2630 return ("IOPB DMA fatal"); 2631 case XD_ERR_IOAL: 2632 return ("IOPB address alignment error"); 2633 case XD_ERR_FIRM: 2634 return ("Firmware error"); 2635 case XD_ERR_MMOD: 2636 return ("Illegal maintenance mode test number"); 2637 case XD_ERR_ACFL: 2638 return ("ACFAIL asserted"); 2639 default: 2640 return ("Unknown error"); 2641 } 2642 } 2643