1 /* $NetBSD: xd.c,v 1.55 2004/10/28 07:07:46 yamt 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 1.55 2004/10/28 07:07:46 yamt 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 80 #include <machine/bus.h> 81 #include <machine/intr.h> 82 83 #if defined(__sparc__) || defined(sun3) 84 #include <dev/sun/disklabel.h> 85 #endif 86 87 #include <dev/vme/vmereg.h> 88 #include <dev/vme/vmevar.h> 89 90 #include <dev/vme/xdreg.h> 91 #include <dev/vme/xdvar.h> 92 #include <dev/vme/xio.h> 93 94 #include "locators.h" 95 96 /* 97 * macros 98 */ 99 100 /* 101 * XDC_TWAIT: add iorq "N" to tail of SC's wait queue 102 */ 103 #define XDC_TWAIT(SC, N) { \ 104 (SC)->waitq[(SC)->waitend] = (N); \ 105 (SC)->waitend = ((SC)->waitend + 1) % XDC_MAXIOPB; \ 106 (SC)->nwait++; \ 107 } 108 109 /* 110 * XDC_HWAIT: add iorq "N" to head of SC's wait queue 111 */ 112 #define XDC_HWAIT(SC, N) { \ 113 (SC)->waithead = ((SC)->waithead == 0) ? \ 114 (XDC_MAXIOPB - 1) : ((SC)->waithead - 1); \ 115 (SC)->waitq[(SC)->waithead] = (N); \ 116 (SC)->nwait++; \ 117 } 118 119 /* 120 * XDC_GET_WAITER: gets the first request waiting on the waitq 121 * and removes it (so it can be submitted) 122 */ 123 #define XDC_GET_WAITER(XDCSC, RQ) { \ 124 (RQ) = (XDCSC)->waitq[(XDCSC)->waithead]; \ 125 (XDCSC)->waithead = ((XDCSC)->waithead + 1) % XDC_MAXIOPB; \ 126 xdcsc->nwait--; \ 127 } 128 129 /* 130 * XDC_FREE: add iorq "N" to SC's free list 131 */ 132 #define XDC_FREE(SC, N) { \ 133 (SC)->freereq[(SC)->nfree++] = (N); \ 134 (SC)->reqs[N].mode = 0; \ 135 if ((SC)->nfree == 1) wakeup(&(SC)->nfree); \ 136 } 137 138 139 /* 140 * XDC_RQALLOC: allocate an iorq off the free list (assume nfree > 0). 141 */ 142 #define XDC_RQALLOC(XDCSC) (XDCSC)->freereq[--((XDCSC)->nfree)] 143 144 /* 145 * XDC_GO: start iopb ADDR (DVMA addr in a u_long) on XDC 146 */ 147 #define XDC_GO(XDC, ADDR) { \ 148 (XDC)->xdc_iopbaddr0 = ((ADDR) & 0xff); \ 149 (ADDR) = ((ADDR) >> 8); \ 150 (XDC)->xdc_iopbaddr1 = ((ADDR) & 0xff); \ 151 (ADDR) = ((ADDR) >> 8); \ 152 (XDC)->xdc_iopbaddr2 = ((ADDR) & 0xff); \ 153 (ADDR) = ((ADDR) >> 8); \ 154 (XDC)->xdc_iopbaddr3 = (ADDR); \ 155 (XDC)->xdc_iopbamod = XDC_ADDRMOD; \ 156 (XDC)->xdc_csr = XDC_ADDIOPB; /* go! */ \ 157 } 158 159 /* 160 * XDC_WAIT: wait for XDC's csr "BITS" to come on in "TIME". 161 * LCV is a counter. If it goes to zero then we timed out. 162 */ 163 #define XDC_WAIT(XDC, LCV, TIME, BITS) { \ 164 (LCV) = (TIME); \ 165 while ((LCV) > 0) { \ 166 if ((XDC)->xdc_csr & (BITS)) break; \ 167 (LCV) = (LCV) - 1; \ 168 DELAY(1); \ 169 } \ 170 } 171 172 /* 173 * XDC_DONE: don't need IORQ, get error code and free (done after xdc_cmd) 174 */ 175 #define XDC_DONE(SC,RQ,ER) { \ 176 if ((RQ) == XD_ERR_FAIL) { \ 177 (ER) = (RQ); \ 178 } else { \ 179 if ((SC)->ndone-- == XDC_SUBWAITLIM) \ 180 wakeup(&(SC)->ndone); \ 181 (ER) = (SC)->reqs[RQ].errno; \ 182 XDC_FREE((SC), (RQ)); \ 183 } \ 184 } 185 186 /* 187 * XDC_ADVANCE: advance iorq's pointers by a number of sectors 188 */ 189 #define XDC_ADVANCE(IORQ, N) { \ 190 if (N) { \ 191 (IORQ)->sectcnt -= (N); \ 192 (IORQ)->blockno += (N); \ 193 (IORQ)->dbuf += ((N)*XDFM_BPS); \ 194 } \ 195 } 196 197 /* 198 * note - addresses you can sleep on: 199 * [1] & of xd_softc's "state" (waiting for a chance to attach a drive) 200 * [2] & of xdc_softc's "nfree" (waiting for a free iorq/iopb) 201 * [3] & of xdc_softc's "ndone" (waiting for number of done iorq/iopb's 202 * to drop below XDC_SUBWAITLIM) 203 * [4] & an iorq (waiting for an XD_SUB_WAIT iorq to finish) 204 */ 205 206 207 /* 208 * function prototypes 209 * "xdc_*" functions are internal, all others are external interfaces 210 */ 211 212 extern int pil_to_vme[]; /* from obio.c */ 213 214 /* internals */ 215 int xdc_cmd __P((struct xdc_softc *, int, int, int, int, int, char *, int)); 216 char *xdc_e2str __P((int)); 217 int xdc_error __P((struct xdc_softc *, struct xd_iorq *, 218 struct xd_iopb *, int, int)); 219 int xdc_ioctlcmd __P((struct xd_softc *, dev_t dev, struct xd_iocmd *)); 220 void xdc_perror __P((struct xd_iorq *, struct xd_iopb *, int)); 221 int xdc_piodriver __P((struct xdc_softc *, int, int)); 222 int xdc_remove_iorq __P((struct xdc_softc *)); 223 int xdc_reset __P((struct xdc_softc *, int, int, int, struct xd_softc *)); 224 inline void xdc_rqinit __P((struct xd_iorq *, struct xdc_softc *, 225 struct xd_softc *, int, u_long, int, 226 caddr_t, struct buf *)); 227 void xdc_rqtopb __P((struct xd_iorq *, struct xd_iopb *, int, int)); 228 void xdc_start __P((struct xdc_softc *, int)); 229 int xdc_startbuf __P((struct xdc_softc *, struct xd_softc *, struct buf *)); 230 int xdc_submit_iorq __P((struct xdc_softc *, int, int)); 231 void xdc_tick __P((void *)); 232 void xdc_xdreset __P((struct xdc_softc *, struct xd_softc *)); 233 int xd_dmamem_alloc(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 234 int *, bus_size_t, caddr_t *, bus_addr_t *); 235 void xd_dmamem_free(bus_dma_tag_t, bus_dmamap_t, bus_dma_segment_t *, 236 int, bus_size_t, caddr_t); 237 238 239 /* machine interrupt hook */ 240 int xdcintr __P((void *)); 241 242 /* autoconf */ 243 int xdcmatch __P((struct device *, struct cfdata *, void *)); 244 void xdcattach __P((struct device *, struct device *, void *)); 245 int xdmatch __P((struct device *, struct cfdata *, void *)); 246 void xdattach __P((struct device *, struct device *, void *)); 247 static int xdc_probe __P((void *, bus_space_tag_t, bus_space_handle_t)); 248 249 static void xddummystrat __P((struct buf *)); 250 int xdgetdisklabel __P((struct xd_softc *, void *)); 251 252 /* XXX - think about this more.. xd_machdep? */ 253 void xdc_md_setup __P((void)); 254 int XDC_DELAY; 255 256 #if defined(__sparc__) 257 #include <sparc/sparc/vaddrs.h> 258 #include <sparc/sparc/cpuvar.h> 259 void xdc_md_setup() 260 { 261 if (CPU_ISSUN4 && cpuinfo.cpu_type == CPUTYP_4_300) 262 XDC_DELAY = XDC_DELAY_4_300; 263 else 264 XDC_DELAY = XDC_DELAY_SPARC; 265 } 266 #elif defined(sun3) 267 void xdc_md_setup() 268 { 269 XDC_DELAY = XDC_DELAY_SUN3; 270 } 271 #else 272 void xdc_md_setup() 273 { 274 XDC_DELAY = 0; 275 } 276 #endif 277 278 /* 279 * cfattach's: device driver interface to autoconfig 280 */ 281 282 CFATTACH_DECL(xdc, sizeof(struct xdc_softc), 283 xdcmatch, xdcattach, NULL, NULL); 284 285 CFATTACH_DECL(xd, sizeof(struct xd_softc), 286 xdmatch, xdattach, NULL, NULL); 287 288 extern struct cfdriver xd_cd; 289 290 dev_type_open(xdopen); 291 dev_type_close(xdclose); 292 dev_type_read(xdread); 293 dev_type_write(xdwrite); 294 dev_type_ioctl(xdioctl); 295 dev_type_strategy(xdstrategy); 296 dev_type_dump(xddump); 297 dev_type_size(xdsize); 298 299 const struct bdevsw xd_bdevsw = { 300 xdopen, xdclose, xdstrategy, xdioctl, xddump, xdsize, D_DISK 301 }; 302 303 const struct cdevsw xd_cdevsw = { 304 xdopen, xdclose, xdread, xdwrite, xdioctl, 305 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 306 }; 307 308 struct xdc_attach_args { /* this is the "aux" args to xdattach */ 309 int driveno; /* unit number */ 310 int fullmode; /* submit mode */ 311 int booting; /* are we booting or not? */ 312 }; 313 314 /* 315 * dkdriver 316 */ 317 318 struct dkdriver xddkdriver = {xdstrategy}; 319 320 /* 321 * start: disk label fix code (XXX) 322 */ 323 324 static void *xd_labeldata; 325 326 static void 327 xddummystrat(bp) 328 struct buf *bp; 329 { 330 if (bp->b_bcount != XDFM_BPS) 331 panic("xddummystrat"); 332 bcopy(xd_labeldata, bp->b_data, XDFM_BPS); 333 bp->b_flags |= B_DONE; 334 bp->b_flags &= ~B_BUSY; 335 } 336 337 int 338 xdgetdisklabel(xd, b) 339 struct xd_softc *xd; 340 void *b; 341 { 342 const char *err; 343 #if defined(__sparc__) || defined(sun3) 344 struct sun_disklabel *sdl; 345 #endif 346 347 /* We already have the label data in `b'; setup for dummy strategy */ 348 xd_labeldata = b; 349 350 /* Required parameter for readdisklabel() */ 351 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; 352 353 err = readdisklabel(MAKEDISKDEV(0, xd->sc_dev.dv_unit, RAW_PART), 354 xddummystrat, 355 xd->sc_dk.dk_label, xd->sc_dk.dk_cpulabel); 356 if (err) { 357 printf("%s: %s\n", xd->sc_dev.dv_xname, err); 358 return(XD_ERR_FAIL); 359 } 360 361 #if defined(__sparc__) || defined(sun3) 362 /* Ok, we have the label; fill in `pcyl' if there's SunOS magic */ 363 sdl = (struct sun_disklabel *)xd->sc_dk.dk_cpulabel->cd_block; 364 if (sdl->sl_magic == SUN_DKMAGIC) { 365 xd->pcyl = sdl->sl_pcylinders; 366 } else 367 #endif 368 { 369 printf("%s: WARNING: no `pcyl' in disk label.\n", 370 xd->sc_dev.dv_xname); 371 xd->pcyl = xd->sc_dk.dk_label->d_ncylinders + 372 xd->sc_dk.dk_label->d_acylinders; 373 printf("%s: WARNING: guessing pcyl=%d (ncyl+acyl)\n", 374 xd->sc_dev.dv_xname, xd->pcyl); 375 } 376 377 xd->ncyl = xd->sc_dk.dk_label->d_ncylinders; 378 xd->acyl = xd->sc_dk.dk_label->d_acylinders; 379 xd->nhead = xd->sc_dk.dk_label->d_ntracks; 380 xd->nsect = xd->sc_dk.dk_label->d_nsectors; 381 xd->sectpercyl = xd->nhead * xd->nsect; 382 xd->sc_dk.dk_label->d_secsize = XDFM_BPS; /* not handled by 383 * sun->bsd */ 384 return(XD_ERR_AOK); 385 } 386 387 /* 388 * end: disk label fix code (XXX) 389 */ 390 391 /* 392 * Shorthand for allocating, mapping and loading a DMA buffer 393 */ 394 int 395 xd_dmamem_alloc(tag, map, seg, nsegp, len, kvap, dmap) 396 bus_dma_tag_t tag; 397 bus_dmamap_t map; 398 bus_dma_segment_t *seg; 399 int *nsegp; 400 bus_size_t len; 401 caddr_t *kvap; 402 bus_addr_t *dmap; 403 { 404 int nseg; 405 int error; 406 407 if ((error = bus_dmamem_alloc(tag, len, 0, 0, 408 seg, 1, &nseg, BUS_DMA_NOWAIT)) != 0) { 409 return (error); 410 } 411 412 if ((error = bus_dmamem_map(tag, seg, nseg, 413 len, kvap, 414 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 415 bus_dmamem_free(tag, seg, nseg); 416 return (error); 417 } 418 419 if ((error = bus_dmamap_load(tag, map, 420 *kvap, len, NULL, 421 BUS_DMA_NOWAIT)) != 0) { 422 bus_dmamem_unmap(tag, *kvap, len); 423 bus_dmamem_free(tag, seg, nseg); 424 return (error); 425 } 426 427 *dmap = map->dm_segs[0].ds_addr; 428 *nsegp = nseg; 429 return (0); 430 } 431 432 void 433 xd_dmamem_free(tag, map, seg, nseg, len, kva) 434 bus_dma_tag_t tag; 435 bus_dmamap_t map; 436 bus_dma_segment_t *seg; 437 int nseg; 438 bus_size_t len; 439 caddr_t kva; 440 { 441 442 bus_dmamap_unload(tag, map); 443 bus_dmamem_unmap(tag, kva, len); 444 bus_dmamem_free(tag, seg, nseg); 445 } 446 447 448 /* 449 * a u t o c o n f i g f u n c t i o n s 450 */ 451 452 /* 453 * xdcmatch: determine if xdc is present or not. we do a 454 * soft reset to detect the xdc. 455 */ 456 457 int 458 xdc_probe(arg, tag, handle) 459 void *arg; 460 bus_space_tag_t tag; 461 bus_space_handle_t handle; 462 { 463 struct xdc *xdc = (void *)handle; /* XXX */ 464 int del = 0; 465 466 xdc->xdc_csr = XDC_RESET; 467 XDC_WAIT(xdc, del, XDC_RESETUSEC, XDC_RESET); 468 return (del > 0 ? 0 : EIO); 469 } 470 471 int xdcmatch(parent, cf, aux) 472 struct device *parent; 473 struct cfdata *cf; 474 void *aux; 475 { 476 struct vme_attach_args *va = aux; 477 vme_chipset_tag_t ct = va->va_vct; 478 vme_am_t mod; 479 int error; 480 481 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 482 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 483 return (0); 484 485 error = vme_probe(ct, va->r[0].offset, sizeof(struct xdc), 486 mod, VME_D32, xdc_probe, 0); 487 vme_space_free(va->va_vct, va->r[0].offset, sizeof(struct xdc), mod); 488 489 return (error == 0); 490 } 491 492 /* 493 * xdcattach: attach controller 494 */ 495 void 496 xdcattach(parent, self, aux) 497 struct device *parent, *self; 498 void *aux; 499 500 { 501 struct vme_attach_args *va = aux; 502 vme_chipset_tag_t ct = va->va_vct; 503 bus_space_tag_t bt; 504 bus_space_handle_t bh; 505 vme_intr_handle_t ih; 506 vme_am_t mod; 507 struct xdc_softc *xdc = (void *) self; 508 struct xdc_attach_args xa; 509 int lcv, rqno, error; 510 struct xd_iopb_ctrl *ctl; 511 bus_dma_segment_t seg; 512 int rseg; 513 vme_mapresc_t resc; 514 bus_addr_t busaddr; 515 516 xdc_md_setup(); 517 518 /* get addressing and intr level stuff from autoconfig and load it 519 * into our xdc_softc. */ 520 521 xdc->dmatag = va->va_bdt; 522 mod = VME_AM_A16 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA; 523 524 if (vme_space_alloc(ct, va->r[0].offset, sizeof(struct xdc), mod)) 525 panic("xdc: vme alloc"); 526 527 if (vme_space_map(ct, va->r[0].offset, sizeof(struct xdc), 528 mod, VME_D32, 0, &bt, &bh, &resc) != 0) 529 panic("xdc: vme_map"); 530 531 xdc->xdc = (struct xdc *) bh; /* XXX */ 532 xdc->ipl = va->ilevel; 533 xdc->vector = va->ivector; 534 535 for (lcv = 0; lcv < XDC_MAXDEV; lcv++) 536 xdc->sc_drives[lcv] = (struct xd_softc *) 0; 537 538 /* 539 * allocate and zero buffers 540 * 541 * note: we simplify the code by allocating the max number of iopbs and 542 * iorq's up front. thus, we avoid linked lists and the costs 543 * associated with them in exchange for wasting a little memory. 544 */ 545 546 /* Get DMA handle for misc. transfers */ 547 if ((error = vme_dmamap_create( 548 ct, /* VME chip tag */ 549 MAXPHYS, /* size */ 550 VME_AM_A24, /* address modifier */ 551 VME_D32, /* data size */ 552 0, /* swap */ 553 1, /* nsegments */ 554 MAXPHYS, /* maxsegsz */ 555 0, /* boundary */ 556 BUS_DMA_NOWAIT, 557 &xdc->auxmap)) != 0) { 558 559 printf("%s: DMA buffer map create error %d\n", 560 xdc->sc_dev.dv_xname, error); 561 return; 562 } 563 564 565 /* Get DMA handle for mapping iorq descriptors */ 566 if ((error = vme_dmamap_create( 567 ct, /* VME chip tag */ 568 XDC_MAXIOPB * sizeof(struct xd_iopb), 569 VME_AM_A24, /* address modifier */ 570 VME_D32, /* data size */ 571 0, /* swap */ 572 1, /* nsegments */ 573 XDC_MAXIOPB * sizeof(struct xd_iopb), 574 0, /* boundary */ 575 BUS_DMA_NOWAIT, 576 &xdc->iopmap)) != 0) { 577 578 printf("%s: DMA buffer map create error %d\n", 579 xdc->sc_dev.dv_xname, error); 580 return; 581 } 582 583 /* Get DMA buffer for iorq descriptors */ 584 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->iopmap, &seg, &rseg, 585 XDC_MAXIOPB * sizeof(struct xd_iopb), 586 (caddr_t *)&xdc->iopbase, 587 &busaddr)) != 0) { 588 printf("%s: DMA buffer alloc error %d\n", 589 xdc->sc_dev.dv_xname, error); 590 return; 591 } 592 xdc->dvmaiopb = (struct xd_iopb *)(u_long)BUS_ADDR_PADDR(busaddr); 593 594 bzero(xdc->iopbase, XDC_MAXIOPB * sizeof(struct xd_iopb)); 595 596 xdc->reqs = (struct xd_iorq *) 597 malloc(XDC_MAXIOPB * sizeof(struct xd_iorq), 598 M_DEVBUF, M_NOWAIT|M_ZERO); 599 if (xdc->reqs == NULL) 600 panic("xdc malloc"); 601 602 /* init free list, iorq to iopb pointers, and non-zero fields in the 603 * iopb which never change. */ 604 605 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 606 xdc->reqs[lcv].iopb = &xdc->iopbase[lcv]; 607 xdc->reqs[lcv].dmaiopb = &xdc->dvmaiopb[lcv]; 608 xdc->freereq[lcv] = lcv; 609 xdc->iopbase[lcv].fixd = 1; /* always the same */ 610 xdc->iopbase[lcv].naddrmod = XDC_ADDRMOD; /* always the same */ 611 xdc->iopbase[lcv].intr_vec = xdc->vector; /* always the same */ 612 613 if ((error = vme_dmamap_create( 614 ct, /* VME chip tag */ 615 MAXPHYS, /* size */ 616 VME_AM_A24, /* address modifier */ 617 VME_D32, /* data size */ 618 0, /* swap */ 619 1, /* nsegments */ 620 MAXPHYS, /* maxsegsz */ 621 0, /* boundary */ 622 BUS_DMA_NOWAIT, 623 &xdc->reqs[lcv].dmamap)) != 0) { 624 625 printf("%s: DMA buffer map create error %d\n", 626 xdc->sc_dev.dv_xname, error); 627 return; 628 } 629 } 630 xdc->nfree = XDC_MAXIOPB; 631 xdc->nrun = 0; 632 xdc->waithead = xdc->waitend = xdc->nwait = 0; 633 xdc->ndone = 0; 634 635 /* init queue of waiting bufs */ 636 637 bufq_alloc(&xdc->sc_wq, BUFQ_FCFS); 638 callout_init(&xdc->sc_tick_ch); 639 640 /* 641 * section 7 of the manual tells us how to init the controller: 642 * - read controller parameters (6/0) 643 * - write controller parameters (5/0) 644 */ 645 646 /* read controller parameters and insure we have a 753/7053 */ 647 648 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 649 if (rqno == XD_ERR_FAIL) { 650 printf(": couldn't read controller params\n"); 651 return; /* shouldn't ever happen */ 652 } 653 ctl = (struct xd_iopb_ctrl *) &xdc->iopbase[rqno]; 654 if (ctl->ctype != XDCT_753) { 655 if (xdc->reqs[rqno].errno) 656 printf(": %s: ", xdc_e2str(xdc->reqs[rqno].errno)); 657 printf(": doesn't identify as a 753/7053\n"); 658 XDC_DONE(xdc, rqno, error); 659 return; 660 } 661 printf(": Xylogics 753/7053, PROM=0x%x.%02x.%02x\n", 662 ctl->eprom_partno, ctl->eprom_lvl, ctl->eprom_rev); 663 XDC_DONE(xdc, rqno, error); 664 665 /* now write controller parameters (xdc_cmd sets all params for us) */ 666 667 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_CTL, 0, 0, 0, 0, XD_SUB_POLL); 668 XDC_DONE(xdc, rqno, error); 669 if (error) { 670 printf("%s: controller config error: %s\n", 671 xdc->sc_dev.dv_xname, xdc_e2str(error)); 672 return; 673 } 674 675 /* link in interrupt with higher level software */ 676 vme_intr_map(ct, va->ilevel, va->ivector, &ih); 677 vme_intr_establish(ct, ih, IPL_BIO, xdcintr, xdc); 678 evcnt_attach_dynamic(&xdc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, 679 xdc->sc_dev.dv_xname, "intr"); 680 681 682 /* now we must look for disks using autoconfig */ 683 xa.fullmode = XD_SUB_POLL; 684 xa.booting = 1; 685 686 for (xa.driveno = 0; xa.driveno < XDC_MAXDEV; xa.driveno++) 687 (void) config_found(self, (void *) &xa, NULL); 688 689 /* start the watchdog clock */ 690 callout_reset(&xdc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdc); 691 692 } 693 694 /* 695 * xdmatch: probe for disk. 696 * 697 * note: we almost always say disk is present. this allows us to 698 * spin up and configure a disk after the system is booted (we can 699 * call xdattach!). 700 */ 701 int 702 xdmatch(parent, cf, aux) 703 struct device *parent; 704 struct cfdata *cf; 705 void *aux; 706 { 707 struct xdc_attach_args *xa = aux; 708 709 /* looking for autoconf wildcard or exact match */ 710 711 if (cf->cf_loc[XDCCF_DRIVE] != XDCCF_DRIVE_DEFAULT && 712 cf->cf_loc[XDCCF_DRIVE] != xa->driveno) 713 return 0; 714 715 return 1; 716 717 } 718 719 /* 720 * xdattach: attach a disk. this can be called from autoconf and also 721 * from xdopen/xdstrategy. 722 */ 723 void 724 xdattach(parent, self, aux) 725 struct device *parent, *self; 726 void *aux; 727 728 { 729 struct xd_softc *xd = (void *) self; 730 struct xdc_softc *xdc = (void *) parent; 731 struct xdc_attach_args *xa = aux; 732 int rqno, spt = 0, mb, blk, lcv, fmode, s = 0, newstate; 733 struct xd_iopb_drive *driopb; 734 struct dkbad *dkb; 735 int rseg, error; 736 bus_dma_segment_t seg; 737 bus_addr_t busaddr; 738 caddr_t dmaddr; 739 caddr_t buf; 740 741 /* 742 * Always re-initialize the disk structure. We want statistics 743 * to start with a clean slate. 744 */ 745 bzero(&xd->sc_dk, sizeof(xd->sc_dk)); 746 xd->sc_dk.dk_driver = &xddkdriver; 747 xd->sc_dk.dk_name = xd->sc_dev.dv_xname; 748 749 /* if booting, init the xd_softc */ 750 751 if (xa->booting) { 752 xd->state = XD_DRIVE_UNKNOWN; /* to start */ 753 xd->flags = 0; 754 xd->parent = xdc; 755 } 756 xd->xd_drive = xa->driveno; 757 fmode = xa->fullmode; 758 xdc->sc_drives[xa->driveno] = xd; 759 760 /* if not booting, make sure we are the only process in the attach for 761 * this drive. if locked out, sleep on it. */ 762 763 if (!xa->booting) { 764 s = splbio(); 765 while (xd->state == XD_DRIVE_ATTACHING) { 766 if (tsleep(&xd->state, PRIBIO, "xdattach", 0)) { 767 splx(s); 768 return; 769 } 770 } 771 printf("%s at %s", 772 xd->sc_dev.dv_xname, xd->parent->sc_dev.dv_xname); 773 } 774 775 /* we now have control */ 776 xd->state = XD_DRIVE_ATTACHING; 777 newstate = XD_DRIVE_UNKNOWN; 778 779 buf = NULL; 780 if ((error = xd_dmamem_alloc(xdc->dmatag, xdc->auxmap, &seg, &rseg, 781 XDFM_BPS, 782 (caddr_t *)&buf, 783 &busaddr)) != 0) { 784 printf("%s: DMA buffer alloc error %d\n", 785 xdc->sc_dev.dv_xname, error); 786 return; 787 } 788 dmaddr = (caddr_t)(u_long)BUS_ADDR_PADDR(busaddr); 789 790 /* first try and reset the drive */ 791 792 rqno = xdc_cmd(xdc, XDCMD_RST, 0, xd->xd_drive, 0, 0, 0, fmode); 793 XDC_DONE(xdc, rqno, error); 794 if (error == XD_ERR_NRDY) { 795 printf(" drive %d: off-line\n", xa->driveno); 796 goto done; 797 } 798 if (error) { 799 printf(": ERROR 0x%02x (%s)\n", error, xdc_e2str(error)); 800 goto done; 801 } 802 printf(" drive %d: ready\n", xa->driveno); 803 804 /* now set format parameters */ 805 806 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_FMT, xd->xd_drive, 0, 0, 0, fmode); 807 XDC_DONE(xdc, rqno, error); 808 if (error) { 809 printf("%s: write format parameters failed: %s\n", 810 xd->sc_dev.dv_xname, xdc_e2str(error)); 811 goto done; 812 } 813 814 /* get drive parameters */ 815 rqno = xdc_cmd(xdc, XDCMD_RDP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 816 if (rqno != XD_ERR_FAIL) { 817 driopb = (struct xd_iopb_drive *) &xdc->iopbase[rqno]; 818 spt = driopb->sectpertrk; 819 } 820 XDC_DONE(xdc, rqno, error); 821 if (error) { 822 printf("%s: read drive parameters failed: %s\n", 823 xd->sc_dev.dv_xname, xdc_e2str(error)); 824 goto done; 825 } 826 827 /* 828 * now set drive parameters (to semi-bogus values) so we can read the 829 * disk label. 830 */ 831 xd->pcyl = xd->ncyl = 1; 832 xd->acyl = 0; 833 xd->nhead = 1; 834 xd->nsect = 1; 835 xd->sectpercyl = 1; 836 for (lcv = 0; lcv < 126; lcv++) /* init empty bad144 table */ 837 xd->dkb.bt_bad[lcv].bt_cyl = xd->dkb.bt_bad[lcv].bt_trksec = 0xffff; 838 rqno = xdc_cmd(xdc, XDCMD_WRP, XDFUN_DRV, xd->xd_drive, 0, 0, 0, fmode); 839 XDC_DONE(xdc, rqno, error); 840 if (error) { 841 printf("%s: write drive parameters failed: %s\n", 842 xd->sc_dev.dv_xname, xdc_e2str(error)); 843 goto done; 844 } 845 846 /* read disk label */ 847 rqno = xdc_cmd(xdc, XDCMD_RD, 0, xd->xd_drive, 0, 1, dmaddr, fmode); 848 XDC_DONE(xdc, rqno, error); 849 if (error) { 850 printf("%s: reading disk label failed: %s\n", 851 xd->sc_dev.dv_xname, xdc_e2str(error)); 852 goto done; 853 } 854 newstate = XD_DRIVE_NOLABEL; 855 856 xd->hw_spt = spt; 857 /* Attach the disk: must be before getdisklabel to malloc label */ 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, p) 944 dev_t dev; 945 int flag, fmt; 946 struct proc *p; 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 caddr_t 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, p) 1010 dev_t dev; 1011 u_long command; 1012 caddr_t addr; 1013 int flag; 1014 struct proc *p; 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 = suser(p->p_ucred, &p->p_acflag)) != 0) 1124 return (error); 1125 return (xdc_ioctlcmd(xd, dev, xio)); 1126 1127 default: 1128 return ENOTTY; 1129 } 1130 } 1131 /* 1132 * xdopen: open drive 1133 */ 1134 1135 int 1136 xdopen(dev, flag, fmt, p) 1137 dev_t dev; 1138 int flag, fmt; 1139 struct proc *p; 1140 { 1141 int unit, part; 1142 struct xd_softc *xd; 1143 struct xdc_attach_args xa; 1144 1145 /* first, could it be a valid target? */ 1146 1147 unit = DISKUNIT(dev); 1148 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == NULL) 1149 return (ENXIO); 1150 part = DISKPART(dev); 1151 1152 /* do we need to attach the drive? */ 1153 1154 if (xd->state == XD_DRIVE_UNKNOWN) { 1155 xa.driveno = xd->xd_drive; 1156 xa.fullmode = XD_SUB_WAIT; 1157 xa.booting = 0; 1158 xdattach((struct device *) xd->parent, (struct device *) xd, &xa); 1159 if (xd->state == XD_DRIVE_UNKNOWN) { 1160 return (EIO); 1161 } 1162 } 1163 /* check for partition */ 1164 1165 if (part != RAW_PART && 1166 (part >= xd->sc_dk.dk_label->d_npartitions || 1167 xd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 1168 return (ENXIO); 1169 } 1170 /* set open masks */ 1171 1172 switch (fmt) { 1173 case S_IFCHR: 1174 xd->sc_dk.dk_copenmask |= (1 << part); 1175 break; 1176 case S_IFBLK: 1177 xd->sc_dk.dk_bopenmask |= (1 << part); 1178 break; 1179 } 1180 xd->sc_dk.dk_openmask = xd->sc_dk.dk_copenmask | xd->sc_dk.dk_bopenmask; 1181 1182 return 0; 1183 } 1184 1185 int 1186 xdread(dev, uio, flags) 1187 dev_t dev; 1188 struct uio *uio; 1189 int flags; 1190 { 1191 1192 return (physio(xdstrategy, NULL, dev, B_READ, minphys, uio)); 1193 } 1194 1195 int 1196 xdwrite(dev, uio, flags) 1197 dev_t dev; 1198 struct uio *uio; 1199 int flags; 1200 { 1201 1202 return (physio(xdstrategy, NULL, dev, B_WRITE, minphys, uio)); 1203 } 1204 1205 1206 /* 1207 * xdsize: return size of a partition for a dump 1208 */ 1209 1210 int 1211 xdsize(dev) 1212 dev_t dev; 1213 1214 { 1215 struct xd_softc *xdsc; 1216 int unit, part, size, omask; 1217 1218 /* valid unit? */ 1219 unit = DISKUNIT(dev); 1220 if (unit >= xd_cd.cd_ndevs || (xdsc = xd_cd.cd_devs[unit]) == NULL) 1221 return (-1); 1222 1223 part = DISKPART(dev); 1224 omask = xdsc->sc_dk.dk_openmask & (1 << part); 1225 1226 if (omask == 0 && xdopen(dev, 0, S_IFBLK, NULL) != 0) 1227 return (-1); 1228 1229 /* do it */ 1230 if (xdsc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) 1231 size = -1; /* only give valid size for swap partitions */ 1232 else 1233 size = xdsc->sc_dk.dk_label->d_partitions[part].p_size * 1234 (xdsc->sc_dk.dk_label->d_secsize / DEV_BSIZE); 1235 if (omask == 0 && xdclose(dev, 0, S_IFBLK, NULL) != 0) 1236 return (-1); 1237 return (size); 1238 } 1239 /* 1240 * xdstrategy: buffering system interface to xd. 1241 */ 1242 1243 void 1244 xdstrategy(bp) 1245 struct buf *bp; 1246 1247 { 1248 struct xd_softc *xd; 1249 struct xdc_softc *parent; 1250 int s, unit; 1251 struct xdc_attach_args xa; 1252 1253 unit = DISKUNIT(bp->b_dev); 1254 1255 /* check for live device */ 1256 1257 if (unit >= xd_cd.cd_ndevs || (xd = xd_cd.cd_devs[unit]) == 0 || 1258 bp->b_blkno < 0 || 1259 (bp->b_bcount % xd->sc_dk.dk_label->d_secsize) != 0) { 1260 bp->b_error = EINVAL; 1261 goto bad; 1262 } 1263 /* do we need to attach the drive? */ 1264 1265 if (xd->state == XD_DRIVE_UNKNOWN) { 1266 xa.driveno = xd->xd_drive; 1267 xa.fullmode = XD_SUB_WAIT; 1268 xa.booting = 0; 1269 xdattach((struct device *)xd->parent, (struct device *)xd, &xa); 1270 if (xd->state == XD_DRIVE_UNKNOWN) { 1271 bp->b_error = EIO; 1272 goto bad; 1273 } 1274 } 1275 if (xd->state != XD_DRIVE_ONLINE && DISKPART(bp->b_dev) != RAW_PART) { 1276 /* no I/O to unlabeled disks, unless raw partition */ 1277 bp->b_error = EIO; 1278 goto bad; 1279 } 1280 /* short circuit zero length request */ 1281 1282 if (bp->b_bcount == 0) 1283 goto done; 1284 1285 /* check bounds with label (disksubr.c). Determine the size of the 1286 * transfer, and make sure it is within the boundaries of the 1287 * partition. Adjust transfer if needed, and signal errors or early 1288 * completion. */ 1289 1290 if (bounds_check_with_label(&xd->sc_dk, bp, 1291 (xd->flags & XD_WLABEL) != 0) <= 0) 1292 goto done; 1293 1294 /* 1295 * now we know we have a valid buf structure that we need to do I/O 1296 * on. 1297 * 1298 * note that we don't disksort because the controller has a sorting 1299 * algorithm built into the hardware. 1300 */ 1301 1302 s = splbio(); /* protect the queues */ 1303 1304 /* first, give jobs in front of us a chance */ 1305 parent = xd->parent; 1306 while (parent->nfree > 0 && BUFQ_PEEK(&parent->sc_wq) != NULL) 1307 if (xdc_startbuf(parent, NULL, NULL) != XD_ERR_AOK) 1308 break; 1309 1310 /* if there are no free iorq's, then we just queue and return. the 1311 * buffs will get picked up later by xdcintr(). 1312 */ 1313 1314 if (parent->nfree == 0) { 1315 BUFQ_PUT(&parent->sc_wq, bp); 1316 splx(s); 1317 return; 1318 } 1319 1320 /* now we have free iopb's and we are at splbio... start 'em up */ 1321 if (xdc_startbuf(parent, xd, bp) != XD_ERR_AOK) { 1322 return; 1323 } 1324 1325 /* done! */ 1326 1327 splx(s); 1328 return; 1329 1330 bad: /* tells upper layers we have an error */ 1331 bp->b_flags |= B_ERROR; 1332 done: /* tells upper layers we are done with this 1333 * buf */ 1334 bp->b_resid = bp->b_bcount; 1335 biodone(bp); 1336 } 1337 /* 1338 * end of {b,c}devsw functions 1339 */ 1340 1341 /* 1342 * i n t e r r u p t f u n c t i o n 1343 * 1344 * xdcintr: hardware interrupt. 1345 */ 1346 int 1347 xdcintr(v) 1348 void *v; 1349 1350 { 1351 struct xdc_softc *xdcsc = v; 1352 1353 /* kick the event counter */ 1354 1355 xdcsc->sc_intrcnt.ev_count++; 1356 1357 /* remove as many done IOPBs as possible */ 1358 1359 xdc_remove_iorq(xdcsc); 1360 1361 /* start any iorq's already waiting */ 1362 1363 xdc_start(xdcsc, XDC_MAXIOPB); 1364 1365 /* fill up any remaining iorq's with queue'd buffers */ 1366 1367 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1368 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1369 break; 1370 1371 return (1); 1372 } 1373 /* 1374 * end of interrupt function 1375 */ 1376 1377 /* 1378 * i n t e r n a l f u n c t i o n s 1379 */ 1380 1381 /* 1382 * xdc_rqinit: fill out the fields of an I/O request 1383 */ 1384 1385 inline void 1386 xdc_rqinit(rq, xdc, xd, md, blk, cnt, db, bp) 1387 struct xd_iorq *rq; 1388 struct xdc_softc *xdc; 1389 struct xd_softc *xd; 1390 int md; 1391 u_long blk; 1392 int cnt; 1393 caddr_t db; 1394 struct buf *bp; 1395 { 1396 rq->xdc = xdc; 1397 rq->xd = xd; 1398 rq->ttl = XDC_MAXTTL + 10; 1399 rq->mode = md; 1400 rq->tries = rq->errno = rq->lasterror = 0; 1401 rq->blockno = blk; 1402 rq->sectcnt = cnt; 1403 rq->dbuf = db; 1404 rq->buf = bp; 1405 } 1406 /* 1407 * xdc_rqtopb: load up an IOPB based on an iorq 1408 */ 1409 1410 void 1411 xdc_rqtopb(iorq, iopb, cmd, subfun) 1412 struct xd_iorq *iorq; 1413 struct xd_iopb *iopb; 1414 int cmd, subfun; 1415 1416 { 1417 u_long block, dp; 1418 1419 /* standard stuff */ 1420 1421 iopb->errs = iopb->done = 0; 1422 iopb->comm = cmd; 1423 iopb->errno = iopb->status = 0; 1424 iopb->subfun = subfun; 1425 if (iorq->xd) 1426 iopb->unit = iorq->xd->xd_drive; 1427 else 1428 iopb->unit = 0; 1429 1430 /* check for alternate IOPB format */ 1431 1432 if (cmd == XDCMD_WRP) { 1433 switch (subfun) { 1434 case XDFUN_CTL:{ 1435 struct xd_iopb_ctrl *ctrl = 1436 (struct xd_iopb_ctrl *) iopb; 1437 iopb->lll = 0; 1438 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1439 ? 0 1440 : iorq->xdc->ipl; 1441 ctrl->param_a = XDPA_TMOD | XDPA_DACF; 1442 ctrl->param_b = XDPB_ROR | XDPB_TDT_3_2USEC; 1443 ctrl->param_c = XDPC_OVS | XDPC_COP | XDPC_ASR | 1444 XDPC_RBC | XDPC_ECC2; 1445 ctrl->throttle = XDC_THROTTLE; 1446 ctrl->delay = XDC_DELAY; 1447 break; 1448 } 1449 case XDFUN_DRV:{ 1450 struct xd_iopb_drive *drv = 1451 (struct xd_iopb_drive *)iopb; 1452 /* we assume that the disk label has the right 1453 * info */ 1454 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1455 drv->dparam_ipl = (XDC_DPARAM << 3); 1456 else 1457 drv->dparam_ipl = (XDC_DPARAM << 3) | 1458 iorq->xdc->ipl; 1459 drv->maxsect = iorq->xd->nsect - 1; 1460 drv->maxsector = drv->maxsect; 1461 /* note: maxsector != maxsect only if you are 1462 * doing cyl sparing */ 1463 drv->headoff = 0; 1464 drv->maxcyl = iorq->xd->pcyl - 1; 1465 drv->maxhead = iorq->xd->nhead - 1; 1466 break; 1467 } 1468 case XDFUN_FMT:{ 1469 struct xd_iopb_format *form = 1470 (struct xd_iopb_format *) iopb; 1471 if (XD_STATE(iorq->mode) == XD_SUB_POLL) 1472 form->interleave_ipl = (XDC_INTERLEAVE << 3); 1473 else 1474 form->interleave_ipl = (XDC_INTERLEAVE << 3) | 1475 iorq->xdc->ipl; 1476 form->field1 = XDFM_FIELD1; 1477 form->field2 = XDFM_FIELD2; 1478 form->field3 = XDFM_FIELD3; 1479 form->field4 = XDFM_FIELD4; 1480 form->bytespersec = XDFM_BPS; 1481 form->field6 = XDFM_FIELD6; 1482 form->field7 = XDFM_FIELD7; 1483 break; 1484 } 1485 } 1486 } else { 1487 1488 /* normal IOPB case (harmless to RDP command) */ 1489 1490 iopb->lll = 0; 1491 iopb->intl = (XD_STATE(iorq->mode) == XD_SUB_POLL) 1492 ? 0 1493 : iorq->xdc->ipl; 1494 iopb->sectcnt = iorq->sectcnt; 1495 block = iorq->blockno; 1496 if (iorq->xd == NULL || block == 0) { 1497 iopb->sectno = iopb->headno = iopb->cylno = 0; 1498 } else { 1499 iopb->sectno = block % iorq->xd->nsect; 1500 block = block / iorq->xd->nsect; 1501 iopb->headno = block % iorq->xd->nhead; 1502 block = block / iorq->xd->nhead; 1503 iopb->cylno = block; 1504 } 1505 dp = (u_long) iorq->dbuf; 1506 dp = iopb->daddr = (iorq->dbuf == NULL) ? 0 : dp; 1507 iopb->addrmod = ((dp + (XDFM_BPS * iorq->sectcnt)) > 0x1000000) 1508 ? XDC_ADDRMOD32 1509 : XDC_ADDRMOD; 1510 } 1511 } 1512 1513 /* 1514 * xdc_cmd: front end for POLL'd and WAIT'd commands. Returns rqno. 1515 * If you've already got an IORQ, you can call submit directly (currently 1516 * there is no need to do this). NORM requests are handled separately. 1517 */ 1518 int 1519 xdc_cmd(xdcsc, cmd, subfn, unit, block, scnt, dptr, fullmode) 1520 struct xdc_softc *xdcsc; 1521 int cmd, subfn, unit, block, scnt; 1522 char *dptr; 1523 int fullmode; 1524 1525 { 1526 int rqno, submode = XD_STATE(fullmode), retry; 1527 struct xd_iorq *iorq; 1528 struct xd_iopb *iopb; 1529 1530 /* get iorq/iopb */ 1531 switch (submode) { 1532 case XD_SUB_POLL: 1533 while (xdcsc->nfree == 0) { 1534 if (xdc_piodriver(xdcsc, 0, 1) != XD_ERR_AOK) 1535 return (XD_ERR_FAIL); 1536 } 1537 break; 1538 case XD_SUB_WAIT: 1539 retry = 1; 1540 while (retry) { 1541 while (xdcsc->nfree == 0) { 1542 if (tsleep(&xdcsc->nfree, PRIBIO, "xdnfree", 0)) 1543 return (XD_ERR_FAIL); 1544 } 1545 while (xdcsc->ndone > XDC_SUBWAITLIM) { 1546 if (tsleep(&xdcsc->ndone, PRIBIO, "xdsubwait", 0)) 1547 return (XD_ERR_FAIL); 1548 } 1549 if (xdcsc->nfree) 1550 retry = 0; /* got it */ 1551 } 1552 break; 1553 default: 1554 return (XD_ERR_FAIL); /* illegal */ 1555 } 1556 if (xdcsc->nfree == 0) 1557 panic("xdcmd nfree"); 1558 rqno = XDC_RQALLOC(xdcsc); 1559 iorq = &xdcsc->reqs[rqno]; 1560 iopb = iorq->iopb; 1561 1562 1563 /* init iorq/iopb */ 1564 1565 xdc_rqinit(iorq, xdcsc, 1566 (unit == XDC_NOUNIT) ? NULL : xdcsc->sc_drives[unit], 1567 fullmode, block, scnt, dptr, NULL); 1568 1569 /* load IOPB from iorq */ 1570 1571 xdc_rqtopb(iorq, iopb, cmd, subfn); 1572 1573 /* submit it for processing */ 1574 1575 xdc_submit_iorq(xdcsc, rqno, fullmode); /* error code will be in iorq */ 1576 1577 return (rqno); 1578 } 1579 /* 1580 * xdc_startbuf 1581 * start a buffer running, assumes nfree > 0 1582 */ 1583 1584 int 1585 xdc_startbuf(xdcsc, xdsc, bp) 1586 struct xdc_softc *xdcsc; 1587 struct xd_softc *xdsc; 1588 struct buf *bp; 1589 1590 { 1591 int rqno, partno; 1592 struct xd_iorq *iorq; 1593 struct xd_iopb *iopb; 1594 u_long block; 1595 /* caddr_t dbuf;*/ 1596 int error; 1597 1598 if (!xdcsc->nfree) 1599 panic("xdc_startbuf free"); 1600 rqno = XDC_RQALLOC(xdcsc); 1601 iorq = &xdcsc->reqs[rqno]; 1602 iopb = iorq->iopb; 1603 1604 /* get buf */ 1605 1606 if (bp == NULL) { 1607 bp = BUFQ_GET(&xdcsc->sc_wq); 1608 if (bp == NULL) 1609 panic("xdc_startbuf bp"); 1610 xdsc = xdcsc->sc_drives[DISKUNIT(bp->b_dev)]; 1611 } 1612 partno = DISKPART(bp->b_dev); 1613 #ifdef XDC_DEBUG 1614 printf("xdc_startbuf: %s%c: %s block %d\n", xdsc->sc_dev.dv_xname, 1615 'a' + partno, (bp->b_flags & B_READ) ? "read" : "write", bp->b_blkno); 1616 printf("xdc_startbuf: b_bcount %d, b_data 0x%x\n", 1617 bp->b_bcount, bp->b_data); 1618 #endif 1619 1620 /* 1621 * load request. we have to calculate the correct block number based 1622 * on partition info. 1623 * 1624 * note that iorq points to the buffer as mapped into DVMA space, 1625 * where as the bp->b_data points to its non-DVMA mapping. 1626 */ 1627 1628 block = bp->b_blkno + ((partno == RAW_PART) ? 0 : 1629 xdsc->sc_dk.dk_label->d_partitions[partno].p_offset); 1630 1631 error = bus_dmamap_load(xdcsc->dmatag, iorq->dmamap, 1632 bp->b_data, bp->b_bcount, 0, BUS_DMA_NOWAIT); 1633 if (error != 0) { 1634 printf("%s: warning: cannot load DMA map\n", 1635 xdcsc->sc_dev.dv_xname); 1636 XDC_FREE(xdcsc, rqno); 1637 BUFQ_PUT(&xdcsc->sc_wq, bp); 1638 return (XD_ERR_FAIL); /* XXX: need some sort of 1639 * call-back scheme here? */ 1640 } 1641 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1642 iorq->dmamap->dm_mapsize, (bp->b_flags & B_READ) 1643 ? BUS_DMASYNC_PREREAD 1644 : BUS_DMASYNC_PREWRITE); 1645 1646 /* init iorq and load iopb from it */ 1647 xdc_rqinit(iorq, xdcsc, xdsc, XD_SUB_NORM | XD_MODE_VERBO, block, 1648 bp->b_bcount / XDFM_BPS, 1649 (caddr_t)(u_long)iorq->dmamap->dm_segs[0].ds_addr, 1650 bp); 1651 1652 xdc_rqtopb(iorq, iopb, (bp->b_flags & B_READ) ? XDCMD_RD : XDCMD_WR, 0); 1653 1654 /* Instrumentation. */ 1655 disk_busy(&xdsc->sc_dk); 1656 1657 /* now submit [note that xdc_submit_iorq can never fail on NORM reqs] */ 1658 1659 xdc_submit_iorq(xdcsc, rqno, XD_SUB_NORM); 1660 return (XD_ERR_AOK); 1661 } 1662 1663 1664 /* 1665 * xdc_submit_iorq: submit an iorq for processing. returns XD_ERR_AOK 1666 * if ok. if it fail returns an error code. type is XD_SUB_*. 1667 * 1668 * note: caller frees iorq in all cases except NORM 1669 * 1670 * return value: 1671 * NORM: XD_AOK (req pending), XD_FAIL (couldn't submit request) 1672 * WAIT: XD_AOK (success), <error-code> (failed) 1673 * POLL: <same as WAIT> 1674 * NOQ : <same as NORM> 1675 * 1676 * there are three sources for i/o requests: 1677 * [1] xdstrategy: normal block I/O, using "struct buf" system. 1678 * [2] autoconfig/crash dump: these are polled I/O requests, no interrupts. 1679 * [3] open/ioctl: these are I/O requests done in the context of a process, 1680 * and the process should block until they are done. 1681 * 1682 * software state is stored in the iorq structure. each iorq has an 1683 * iopb structure. the hardware understands the iopb structure. 1684 * every command must go through an iopb. a 7053 can only handle 1685 * XDC_MAXIOPB (31) active iopbs at one time. iopbs are allocated in 1686 * DVMA space at boot up time. what happens if we run out of iopb's? 1687 * for i/o type [1], the buffers are queued at the "buff" layer and 1688 * picked up later by the interrupt routine. for case [2] the 1689 * programmed i/o driver is called with a special flag that says 1690 * return when one iopb is free. for case [3] the process can sleep 1691 * on the iorq free list until some iopbs are available. 1692 */ 1693 1694 1695 int 1696 xdc_submit_iorq(xdcsc, iorqno, type) 1697 struct xdc_softc *xdcsc; 1698 int iorqno; 1699 int type; 1700 1701 { 1702 u_long iopbaddr; 1703 struct xd_iorq *iorq = &xdcsc->reqs[iorqno]; 1704 1705 #ifdef XDC_DEBUG 1706 printf("xdc_submit_iorq(%s, no=%d, type=%d)\n", xdcsc->sc_dev.dv_xname, 1707 iorqno, type); 1708 #endif 1709 1710 /* first check and see if controller is busy */ 1711 if (xdcsc->xdc->xdc_csr & XDC_ADDING) { 1712 #ifdef XDC_DEBUG 1713 printf("xdc_submit_iorq: XDC not ready (ADDING)\n"); 1714 #endif 1715 if (type == XD_SUB_NOQ) 1716 return (XD_ERR_FAIL); /* failed */ 1717 XDC_TWAIT(xdcsc, iorqno); /* put at end of waitq */ 1718 switch (type) { 1719 case XD_SUB_NORM: 1720 return XD_ERR_AOK; /* success */ 1721 case XD_SUB_WAIT: 1722 while (iorq->iopb->done == 0) { 1723 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1724 } 1725 return (iorq->errno); 1726 case XD_SUB_POLL: 1727 return (xdc_piodriver(xdcsc, iorqno, 0)); 1728 default: 1729 panic("xdc_submit_iorq adding"); 1730 } 1731 } 1732 #ifdef XDC_DEBUG 1733 { 1734 u_char *rio = (u_char *) iorq->iopb; 1735 int sz = sizeof(struct xd_iopb), lcv; 1736 printf("%s: aio #%d [", 1737 xdcsc->sc_dev.dv_xname, iorq - xdcsc->reqs); 1738 for (lcv = 0; lcv < sz; lcv++) 1739 printf(" %02x", rio[lcv]); 1740 printf("]\n"); 1741 } 1742 #endif /* XDC_DEBUG */ 1743 1744 /* controller not busy, start command */ 1745 iopbaddr = (u_long) iorq->dmaiopb; 1746 XDC_GO(xdcsc->xdc, iopbaddr); /* go! */ 1747 xdcsc->nrun++; 1748 /* command now running, wrap it up */ 1749 switch (type) { 1750 case XD_SUB_NORM: 1751 case XD_SUB_NOQ: 1752 return (XD_ERR_AOK); /* success */ 1753 case XD_SUB_WAIT: 1754 while (iorq->iopb->done == 0) { 1755 (void) tsleep(iorq, PRIBIO, "xdciorq", 0); 1756 } 1757 return (iorq->errno); 1758 case XD_SUB_POLL: 1759 return (xdc_piodriver(xdcsc, iorqno, 0)); 1760 default: 1761 panic("xdc_submit_iorq wrap up"); 1762 } 1763 panic("xdc_submit_iorq"); 1764 return 0; /* not reached */ 1765 } 1766 1767 1768 /* 1769 * xdc_piodriver 1770 * 1771 * programmed i/o driver. this function takes over the computer 1772 * and drains off all i/o requests. it returns the status of the iorq 1773 * the caller is interesting in. if freeone is true, then it returns 1774 * when there is a free iorq. 1775 */ 1776 int 1777 xdc_piodriver(xdcsc, iorqno, freeone) 1778 struct xdc_softc *xdcsc; 1779 int iorqno; 1780 int freeone; 1781 1782 { 1783 int nreset = 0; 1784 int retval = 0; 1785 u_long count; 1786 struct xdc *xdc = xdcsc->xdc; 1787 #ifdef XDC_DEBUG 1788 printf("xdc_piodriver(%s, %d, freeone=%d)\n", xdcsc->sc_dev.dv_xname, 1789 iorqno, freeone); 1790 #endif 1791 1792 while (xdcsc->nwait || xdcsc->nrun) { 1793 #ifdef XDC_DEBUG 1794 printf("xdc_piodriver: wait=%d, run=%d\n", 1795 xdcsc->nwait, xdcsc->nrun); 1796 #endif 1797 XDC_WAIT(xdc, count, XDC_MAXTIME, (XDC_REMIOPB | XDC_F_ERROR)); 1798 #ifdef XDC_DEBUG 1799 printf("xdc_piodriver: done wait with count = %d\n", count); 1800 #endif 1801 /* we expect some progress soon */ 1802 if (count == 0 && nreset >= 2) { 1803 xdc_reset(xdcsc, 0, XD_RSET_ALL, XD_ERR_FAIL, 0); 1804 #ifdef XDC_DEBUG 1805 printf("xdc_piodriver: timeout\n"); 1806 #endif 1807 return (XD_ERR_FAIL); 1808 } 1809 if (count == 0) { 1810 if (xdc_reset(xdcsc, 0, 1811 (nreset++ == 0) ? XD_RSET_NONE : iorqno, 1812 XD_ERR_FAIL, 1813 0) == XD_ERR_FAIL) 1814 return (XD_ERR_FAIL); /* flushes all but POLL 1815 * requests, resets */ 1816 continue; 1817 } 1818 xdc_remove_iorq(xdcsc); /* could resubmit request */ 1819 if (freeone) { 1820 if (xdcsc->nrun < XDC_MAXIOPB) { 1821 #ifdef XDC_DEBUG 1822 printf("xdc_piodriver: done: one free\n"); 1823 #endif 1824 return (XD_ERR_AOK); 1825 } 1826 continue; /* don't xdc_start */ 1827 } 1828 xdc_start(xdcsc, XDC_MAXIOPB); 1829 } 1830 1831 /* get return value */ 1832 1833 retval = xdcsc->reqs[iorqno].errno; 1834 1835 #ifdef XDC_DEBUG 1836 printf("xdc_piodriver: done, retval = 0x%x (%s)\n", 1837 xdcsc->reqs[iorqno].errno, xdc_e2str(xdcsc->reqs[iorqno].errno)); 1838 #endif 1839 1840 /* now that we've drained everything, start up any bufs that have 1841 * queued */ 1842 1843 while (xdcsc->nfree > 0 && BUFQ_PEEK(&xdcsc->sc_wq) != NULL) 1844 if (xdc_startbuf(xdcsc, NULL, NULL) != XD_ERR_AOK) 1845 break; 1846 1847 return (retval); 1848 } 1849 1850 /* 1851 * xdc_reset: reset one drive. NOTE: assumes xdc was just reset. 1852 * we steal iopb[0] for this, but we put it back when we are done. 1853 */ 1854 void 1855 xdc_xdreset(xdcsc, xdsc) 1856 struct xdc_softc *xdcsc; 1857 struct xd_softc *xdsc; 1858 1859 { 1860 struct xd_iopb tmpiopb; 1861 u_long addr; 1862 int del; 1863 bcopy(xdcsc->iopbase, &tmpiopb, sizeof(tmpiopb)); 1864 bzero(xdcsc->iopbase, sizeof(tmpiopb)); 1865 xdcsc->iopbase->comm = XDCMD_RST; 1866 xdcsc->iopbase->unit = xdsc->xd_drive; 1867 addr = (u_long) xdcsc->dvmaiopb; 1868 XDC_GO(xdcsc->xdc, addr); /* go! */ 1869 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_REMIOPB); 1870 if (del <= 0 || xdcsc->iopbase->errs) { 1871 printf("%s: off-line: %s\n", xdcsc->sc_dev.dv_xname, 1872 xdc_e2str(xdcsc->iopbase->errno)); 1873 xdcsc->xdc->xdc_csr = XDC_RESET; 1874 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1875 if (del <= 0) 1876 panic("xdc_reset"); 1877 } else { 1878 xdcsc->xdc->xdc_csr = XDC_CLRRIO; /* clear RIO */ 1879 } 1880 bcopy(&tmpiopb, xdcsc->iopbase, sizeof(tmpiopb)); 1881 } 1882 1883 1884 /* 1885 * xdc_reset: reset everything: requests are marked as errors except 1886 * a polled request (which is resubmitted) 1887 */ 1888 int 1889 xdc_reset(xdcsc, quiet, blastmode, error, xdsc) 1890 struct xdc_softc *xdcsc; 1891 int quiet, blastmode, error; 1892 struct xd_softc *xdsc; 1893 1894 { 1895 int del = 0, lcv, retval = XD_ERR_AOK; 1896 int oldfree = xdcsc->nfree; 1897 1898 /* soft reset hardware */ 1899 1900 if (!quiet) 1901 printf("%s: soft reset\n", xdcsc->sc_dev.dv_xname); 1902 xdcsc->xdc->xdc_csr = XDC_RESET; 1903 XDC_WAIT(xdcsc->xdc, del, XDC_RESETUSEC, XDC_RESET); 1904 if (del <= 0) { 1905 blastmode = XD_RSET_ALL; /* dead, flush all requests */ 1906 retval = XD_ERR_FAIL; 1907 } 1908 if (xdsc) 1909 xdc_xdreset(xdcsc, xdsc); 1910 1911 /* fix queues based on "blast-mode" */ 1912 1913 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 1914 register struct xd_iorq *iorq = &xdcsc->reqs[lcv]; 1915 1916 if (XD_STATE(iorq->mode) != XD_SUB_POLL && 1917 XD_STATE(iorq->mode) != XD_SUB_WAIT && 1918 XD_STATE(iorq->mode) != XD_SUB_NORM) 1919 /* is it active? */ 1920 continue; 1921 1922 xdcsc->nrun--; /* it isn't running any more */ 1923 if (blastmode == XD_RSET_ALL || blastmode != lcv) { 1924 /* failed */ 1925 iorq->errno = error; 1926 xdcsc->iopbase[lcv].done = xdcsc->iopbase[lcv].errs = 1; 1927 switch (XD_STATE(xdcsc->reqs[lcv].mode)) { 1928 case XD_SUB_NORM: 1929 iorq->buf->b_error = EIO; 1930 iorq->buf->b_flags |= B_ERROR; 1931 iorq->buf->b_resid = 1932 iorq->sectcnt * XDFM_BPS; 1933 1934 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 1935 iorq->dmamap->dm_mapsize, 1936 (iorq->buf->b_flags & B_READ) 1937 ? BUS_DMASYNC_POSTREAD 1938 : BUS_DMASYNC_POSTWRITE); 1939 1940 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 1941 1942 disk_unbusy(&xdcsc->reqs[lcv].xd->sc_dk, 1943 (xdcsc->reqs[lcv].buf->b_bcount - 1944 xdcsc->reqs[lcv].buf->b_resid), 1945 (iorq->buf->b_flags & B_READ)); 1946 biodone(iorq->buf); 1947 XDC_FREE(xdcsc, lcv); /* add to free list */ 1948 break; 1949 case XD_SUB_WAIT: 1950 wakeup(iorq); 1951 case XD_SUB_POLL: 1952 xdcsc->ndone++; 1953 iorq->mode = 1954 XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 1955 break; 1956 } 1957 1958 } else { 1959 1960 /* resubmit, put at front of wait queue */ 1961 XDC_HWAIT(xdcsc, lcv); 1962 } 1963 } 1964 1965 /* 1966 * now, if stuff is waiting, start it. 1967 * since we just reset it should go 1968 */ 1969 xdc_start(xdcsc, XDC_MAXIOPB); 1970 1971 /* ok, we did it */ 1972 if (oldfree == 0 && xdcsc->nfree) 1973 wakeup(&xdcsc->nfree); 1974 1975 #ifdef XDC_DIAG 1976 del = xdcsc->nwait + xdcsc->nrun + xdcsc->nfree + xdcsc->ndone; 1977 if (del != XDC_MAXIOPB) 1978 printf("%s: diag: xdc_reset miscount (%d should be %d)!\n", 1979 xdcsc->sc_dev.dv_xname, del, XDC_MAXIOPB); 1980 else 1981 if (xdcsc->ndone > XDC_MAXIOPB - XDC_SUBWAITLIM) 1982 printf("%s: diag: lots of done jobs (%d)\n", 1983 xdcsc->sc_dev.dv_xname, xdcsc->ndone); 1984 #endif 1985 printf("RESET DONE\n"); 1986 return (retval); 1987 } 1988 /* 1989 * xdc_start: start all waiting buffers 1990 */ 1991 1992 void 1993 xdc_start(xdcsc, maxio) 1994 struct xdc_softc *xdcsc; 1995 int maxio; 1996 1997 { 1998 int rqno; 1999 while (maxio && xdcsc->nwait && 2000 (xdcsc->xdc->xdc_csr & XDC_ADDING) == 0) { 2001 XDC_GET_WAITER(xdcsc, rqno); /* note: rqno is an "out" 2002 * param */ 2003 if (xdc_submit_iorq(xdcsc, rqno, XD_SUB_NOQ) != XD_ERR_AOK) 2004 panic("xdc_start"); /* should never happen */ 2005 maxio--; 2006 } 2007 } 2008 /* 2009 * xdc_remove_iorq: remove "done" IOPB's. 2010 */ 2011 2012 int 2013 xdc_remove_iorq(xdcsc) 2014 struct xdc_softc *xdcsc; 2015 2016 { 2017 int errno, rqno, comm, errs; 2018 struct xdc *xdc = xdcsc->xdc; 2019 struct xd_iopb *iopb; 2020 struct xd_iorq *iorq; 2021 struct buf *bp; 2022 2023 if (xdc->xdc_csr & XDC_F_ERROR) { 2024 /* 2025 * FATAL ERROR: should never happen under normal use. This 2026 * error is so bad, you can't even tell which IOPB is bad, so 2027 * we dump them all. 2028 */ 2029 errno = xdc->xdc_f_err; 2030 printf("%s: fatal error 0x%02x: %s\n", xdcsc->sc_dev.dv_xname, 2031 errno, xdc_e2str(errno)); 2032 if (xdc_reset(xdcsc, 0, XD_RSET_ALL, errno, 0) != XD_ERR_AOK) { 2033 printf("%s: soft reset failed!\n", 2034 xdcsc->sc_dev.dv_xname); 2035 panic("xdc_remove_iorq: controller DEAD"); 2036 } 2037 return (XD_ERR_AOK); 2038 } 2039 2040 /* 2041 * get iopb that is done 2042 * 2043 * hmm... I used to read the address of the done IOPB off the VME 2044 * registers and calculate the rqno directly from that. that worked 2045 * until I started putting a load on the controller. when loaded, i 2046 * would get interrupts but neither the REMIOPB or F_ERROR bits would 2047 * be set, even after DELAY'ing a while! later on the timeout 2048 * routine would detect IOPBs that were marked "running" but their 2049 * "done" bit was set. rather than dealing directly with this 2050 * problem, it is just easier to look at all running IOPB's for the 2051 * done bit. 2052 */ 2053 if (xdc->xdc_csr & XDC_REMIOPB) { 2054 xdc->xdc_csr = XDC_CLRRIO; 2055 } 2056 2057 for (rqno = 0; rqno < XDC_MAXIOPB; rqno++) { 2058 iorq = &xdcsc->reqs[rqno]; 2059 if (iorq->mode == 0 || XD_STATE(iorq->mode) == XD_SUB_DONE) 2060 continue; /* free, or done */ 2061 iopb = &xdcsc->iopbase[rqno]; 2062 if (iopb->done == 0) 2063 continue; /* not done yet */ 2064 2065 #ifdef XDC_DEBUG 2066 { 2067 u_char *rio = (u_char *) iopb; 2068 int sz = sizeof(struct xd_iopb), lcv; 2069 printf("%s: rio #%d [", xdcsc->sc_dev.dv_xname, rqno); 2070 for (lcv = 0; lcv < sz; lcv++) 2071 printf(" %02x", rio[lcv]); 2072 printf("]\n"); 2073 } 2074 #endif /* XDC_DEBUG */ 2075 2076 xdcsc->nrun--; 2077 2078 comm = iopb->comm; 2079 errs = iopb->errs; 2080 2081 if (errs) 2082 iorq->errno = iopb->errno; 2083 else 2084 iorq->errno = 0; 2085 2086 /* handle non-fatal errors */ 2087 2088 if (errs && 2089 xdc_error(xdcsc, iorq, iopb, rqno, comm) == XD_ERR_AOK) 2090 continue; /* AOK: we resubmitted it */ 2091 2092 2093 /* this iorq is now done (hasn't been restarted or anything) */ 2094 2095 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2096 xdc_perror(iorq, iopb, 0); 2097 2098 /* now, if read/write check to make sure we got all the data 2099 * we needed. (this may not be the case if we got an error in 2100 * the middle of a multisector request). */ 2101 2102 if ((iorq->mode & XD_MODE_B144) != 0 && errs == 0 && 2103 (comm == XDCMD_RD || comm == XDCMD_WR)) { 2104 /* we just successfully processed a bad144 sector 2105 * note: if we are in bad 144 mode, the pointers have 2106 * been advanced already (see above) and are pointing 2107 * at the bad144 sector. to exit bad144 mode, we 2108 * must advance the pointers 1 sector and issue a new 2109 * request if there are still sectors left to process 2110 * 2111 */ 2112 XDC_ADVANCE(iorq, 1); /* advance 1 sector */ 2113 2114 /* exit b144 mode */ 2115 iorq->mode = iorq->mode & (~XD_MODE_B144); 2116 2117 if (iorq->sectcnt) { /* more to go! */ 2118 iorq->lasterror = iorq->errno = iopb->errno = 0; 2119 iopb->errs = iopb->done = 0; 2120 iorq->tries = 0; 2121 iopb->sectcnt = iorq->sectcnt; 2122 iopb->cylno = iorq->blockno / 2123 iorq->xd->sectpercyl; 2124 iopb->headno = 2125 (iorq->blockno / iorq->xd->nhead) % 2126 iorq->xd->nhead; 2127 iopb->sectno = iorq->blockno % XDFM_BPS; 2128 iopb->daddr = (u_long) iorq->dbuf; 2129 XDC_HWAIT(xdcsc, rqno); 2130 xdc_start(xdcsc, 1); /* resubmit */ 2131 continue; 2132 } 2133 } 2134 /* final cleanup, totally done with this request */ 2135 2136 switch (XD_STATE(iorq->mode)) { 2137 case XD_SUB_NORM: 2138 bp = iorq->buf; 2139 if (errs) { 2140 bp->b_error = EIO; 2141 bp->b_flags |= B_ERROR; 2142 bp->b_resid = iorq->sectcnt * XDFM_BPS; 2143 } else { 2144 bp->b_resid = 0; /* done */ 2145 } 2146 bus_dmamap_sync(xdcsc->dmatag, iorq->dmamap, 0, 2147 iorq->dmamap->dm_mapsize, 2148 (bp->b_flags & B_READ) 2149 ? BUS_DMASYNC_POSTREAD 2150 : BUS_DMASYNC_POSTWRITE); 2151 bus_dmamap_unload(xdcsc->dmatag, iorq->dmamap); 2152 2153 disk_unbusy(&iorq->xd->sc_dk, 2154 (bp->b_bcount - bp->b_resid), 2155 (bp->b_flags & B_READ)); 2156 XDC_FREE(xdcsc, rqno); 2157 biodone(bp); 2158 break; 2159 case XD_SUB_WAIT: 2160 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2161 xdcsc->ndone++; 2162 wakeup(iorq); 2163 break; 2164 case XD_SUB_POLL: 2165 iorq->mode = XD_NEWSTATE(iorq->mode, XD_SUB_DONE); 2166 xdcsc->ndone++; 2167 break; 2168 } 2169 } 2170 2171 return (XD_ERR_AOK); 2172 } 2173 2174 /* 2175 * xdc_perror: print error. 2176 * - if still_trying is true: we got an error, retried and got a 2177 * different error. in that case lasterror is the old error, 2178 * and errno is the new one. 2179 * - if still_trying is not true, then if we ever had an error it 2180 * is in lasterror. also, if iorq->errno == 0, then we recovered 2181 * from that error (otherwise iorq->errno == iorq->lasterror). 2182 */ 2183 void 2184 xdc_perror(iorq, iopb, still_trying) 2185 struct xd_iorq *iorq; 2186 struct xd_iopb *iopb; 2187 int still_trying; 2188 2189 { 2190 2191 int error = iorq->lasterror; 2192 2193 printf("%s", (iorq->xd) ? iorq->xd->sc_dev.dv_xname 2194 : iorq->xdc->sc_dev.dv_xname); 2195 if (iorq->buf) 2196 printf("%c: ", 'a' + DISKPART(iorq->buf->b_dev)); 2197 if (iopb->comm == XDCMD_RD || iopb->comm == XDCMD_WR) 2198 printf("%s %d/%d/%d: ", 2199 (iopb->comm == XDCMD_RD) ? "read" : "write", 2200 iopb->cylno, iopb->headno, iopb->sectno); 2201 printf("%s", xdc_e2str(error)); 2202 2203 if (still_trying) 2204 printf(" [still trying, new error=%s]", xdc_e2str(iorq->errno)); 2205 else 2206 if (iorq->errno == 0) 2207 printf(" [recovered in %d tries]", iorq->tries); 2208 2209 printf("\n"); 2210 } 2211 2212 /* 2213 * xdc_error: non-fatal error encountered... recover. 2214 * return AOK if resubmitted, return FAIL if this iopb is done 2215 */ 2216 int 2217 xdc_error(xdcsc, iorq, iopb, rqno, comm) 2218 struct xdc_softc *xdcsc; 2219 struct xd_iorq *iorq; 2220 struct xd_iopb *iopb; 2221 int rqno, comm; 2222 2223 { 2224 int errno = iorq->errno; 2225 int erract = errno & XD_ERA_MASK; 2226 int oldmode, advance; 2227 #ifdef __sparc__ 2228 int i; 2229 #endif 2230 2231 if (erract == XD_ERA_RSET) { /* some errors require a reset */ 2232 oldmode = iorq->mode; 2233 iorq->mode = XD_SUB_DONE | (~XD_SUB_MASK & oldmode); 2234 xdcsc->ndone++; 2235 /* make xdc_start ignore us */ 2236 xdc_reset(xdcsc, 1, XD_RSET_NONE, errno, iorq->xd); 2237 iorq->mode = oldmode; 2238 xdcsc->ndone--; 2239 } 2240 /* check for read/write to a sector in bad144 table if bad: redirect 2241 * request to bad144 area */ 2242 2243 if ((comm == XDCMD_RD || comm == XDCMD_WR) && 2244 (iorq->mode & XD_MODE_B144) == 0) { 2245 advance = iorq->sectcnt - iopb->sectcnt; 2246 XDC_ADVANCE(iorq, advance); 2247 #ifdef __sparc__ 2248 if ((i = isbad(&iorq->xd->dkb, iorq->blockno / iorq->xd->sectpercyl, 2249 (iorq->blockno / iorq->xd->nsect) % iorq->xd->nhead, 2250 iorq->blockno % iorq->xd->nsect)) != -1) { 2251 iorq->mode |= XD_MODE_B144; /* enter bad144 mode & 2252 * redirect */ 2253 iopb->errno = iopb->done = iopb->errs = 0; 2254 iopb->sectcnt = 1; 2255 iopb->cylno = (iorq->xd->ncyl + iorq->xd->acyl) - 2; 2256 /* second to last acyl */ 2257 i = iorq->xd->sectpercyl - 1 - i; /* follow bad144 2258 * standard */ 2259 iopb->headno = i / iorq->xd->nhead; 2260 iopb->sectno = i % iorq->xd->nhead; 2261 XDC_HWAIT(xdcsc, rqno); 2262 xdc_start(xdcsc, 1); /* resubmit */ 2263 return (XD_ERR_AOK); /* recovered! */ 2264 } 2265 #endif 2266 } 2267 2268 /* 2269 * it isn't a bad144 sector, must be real error! see if we can retry 2270 * it? 2271 */ 2272 if ((iorq->mode & XD_MODE_VERBO) && iorq->lasterror) 2273 xdc_perror(iorq, iopb, 1); /* inform of error state 2274 * change */ 2275 iorq->lasterror = errno; 2276 2277 if ((erract == XD_ERA_RSET || erract == XD_ERA_HARD) 2278 && iorq->tries < XDC_MAXTRIES) { /* retry? */ 2279 iorq->tries++; 2280 iorq->errno = iopb->errno = iopb->done = iopb->errs = 0; 2281 XDC_HWAIT(xdcsc, rqno); 2282 xdc_start(xdcsc, 1); /* restart */ 2283 return (XD_ERR_AOK); /* recovered! */ 2284 } 2285 2286 /* failed to recover from this error */ 2287 return (XD_ERR_FAIL); 2288 } 2289 2290 /* 2291 * xdc_tick: make sure xd is still alive and ticking (err, kicking). 2292 */ 2293 void 2294 xdc_tick(arg) 2295 void *arg; 2296 2297 { 2298 struct xdc_softc *xdcsc = arg; 2299 int lcv, s, reset = 0; 2300 #ifdef XDC_DIAG 2301 int wait, run, free, done, whd = 0; 2302 u_char fqc[XDC_MAXIOPB], wqc[XDC_MAXIOPB], mark[XDC_MAXIOPB]; 2303 s = splbio(); 2304 wait = xdcsc->nwait; 2305 run = xdcsc->nrun; 2306 free = xdcsc->nfree; 2307 done = xdcsc->ndone; 2308 bcopy(xdcsc->waitq, wqc, sizeof(wqc)); 2309 bcopy(xdcsc->freereq, fqc, sizeof(fqc)); 2310 splx(s); 2311 if (wait + run + free + done != XDC_MAXIOPB) { 2312 printf("%s: diag: IOPB miscount (got w/f/r/d %d/%d/%d/%d, wanted %d)\n", 2313 xdcsc->sc_dev.dv_xname, wait, free, run, done, XDC_MAXIOPB); 2314 bzero(mark, sizeof(mark)); 2315 printf("FREE: "); 2316 for (lcv = free; lcv > 0; lcv--) { 2317 printf("%d ", fqc[lcv - 1]); 2318 mark[fqc[lcv - 1]] = 1; 2319 } 2320 printf("\nWAIT: "); 2321 lcv = wait; 2322 while (lcv > 0) { 2323 printf("%d ", wqc[whd]); 2324 mark[wqc[whd]] = 1; 2325 whd = (whd + 1) % XDC_MAXIOPB; 2326 lcv--; 2327 } 2328 printf("\n"); 2329 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2330 if (mark[lcv] == 0) 2331 printf("MARK: running %d: mode %d done %d errs %d errno 0x%x ttl %d buf %p\n", 2332 lcv, xdcsc->reqs[lcv].mode, 2333 xdcsc->iopbase[lcv].done, 2334 xdcsc->iopbase[lcv].errs, 2335 xdcsc->iopbase[lcv].errno, 2336 xdcsc->reqs[lcv].ttl, xdcsc->reqs[lcv].buf); 2337 } 2338 } else 2339 if (done > XDC_MAXIOPB - XDC_SUBWAITLIM) 2340 printf("%s: diag: lots of done jobs (%d)\n", 2341 xdcsc->sc_dev.dv_xname, done); 2342 2343 #endif 2344 #ifdef XDC_DEBUG 2345 printf("%s: tick: csr 0x%x, w/f/r/d %d/%d/%d/%d\n", 2346 xdcsc->sc_dev.dv_xname, 2347 xdcsc->xdc->xdc_csr, xdcsc->nwait, xdcsc->nfree, xdcsc->nrun, 2348 xdcsc->ndone); 2349 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2350 if (xdcsc->reqs[lcv].mode) 2351 printf("running %d: mode %d done %d errs %d errno 0x%x\n", 2352 lcv, 2353 xdcsc->reqs[lcv].mode, xdcsc->iopbase[lcv].done, 2354 xdcsc->iopbase[lcv].errs, xdcsc->iopbase[lcv].errno); 2355 } 2356 #endif 2357 2358 /* reduce ttl for each request if one goes to zero, reset xdc */ 2359 s = splbio(); 2360 for (lcv = 0; lcv < XDC_MAXIOPB; lcv++) { 2361 if (xdcsc->reqs[lcv].mode == 0 || 2362 XD_STATE(xdcsc->reqs[lcv].mode) == XD_SUB_DONE) 2363 continue; 2364 xdcsc->reqs[lcv].ttl--; 2365 if (xdcsc->reqs[lcv].ttl == 0) 2366 reset = 1; 2367 } 2368 if (reset) { 2369 printf("%s: watchdog timeout\n", xdcsc->sc_dev.dv_xname); 2370 xdc_reset(xdcsc, 0, XD_RSET_NONE, XD_ERR_FAIL, NULL); 2371 } 2372 splx(s); 2373 2374 /* until next time */ 2375 2376 callout_reset(&xdcsc->sc_tick_ch, XDC_TICKCNT, xdc_tick, xdcsc); 2377 } 2378 2379 /* 2380 * xdc_ioctlcmd: this function provides a user level interface to the 2381 * controller via ioctl. this allows "format" programs to be written 2382 * in user code, and is also useful for some debugging. we return 2383 * an error code. called at user priority. 2384 */ 2385 int 2386 xdc_ioctlcmd(xd, dev, xio) 2387 struct xd_softc *xd; 2388 dev_t dev; 2389 struct xd_iocmd *xio; 2390 2391 { 2392 int s, rqno, dummy; 2393 caddr_t dvmabuf = NULL, buf = NULL; 2394 struct xdc_softc *xdcsc; 2395 int rseg, error; 2396 bus_dma_segment_t seg; 2397 2398 /* check sanity of requested command */ 2399 2400 switch (xio->cmd) { 2401 2402 case XDCMD_NOP: /* no op: everything should be zero */ 2403 if (xio->subfn || xio->dptr || xio->dlen || 2404 xio->block || xio->sectcnt) 2405 return (EINVAL); 2406 break; 2407 2408 case XDCMD_RD: /* read / write sectors (up to XD_IOCMD_MAXS) */ 2409 case XDCMD_WR: 2410 if (xio->subfn || xio->sectcnt > XD_IOCMD_MAXS || 2411 xio->sectcnt * XDFM_BPS != xio->dlen || xio->dptr == NULL) 2412 return (EINVAL); 2413 break; 2414 2415 case XDCMD_SK: /* seek: doesn't seem useful to export this */ 2416 return (EINVAL); 2417 2418 case XDCMD_WRP: /* write parameters */ 2419 return (EINVAL);/* not useful, except maybe drive 2420 * parameters... but drive parameters should 2421 * go via disklabel changes */ 2422 2423 case XDCMD_RDP: /* read parameters */ 2424 if (xio->subfn != XDFUN_DRV || 2425 xio->dlen || xio->block || xio->dptr) 2426 return (EINVAL); /* allow read drive params to 2427 * get hw_spt */ 2428 xio->sectcnt = xd->hw_spt; /* we already know the answer */ 2429 return (0); 2430 break; 2431 2432 case XDCMD_XRD: /* extended read/write */ 2433 case XDCMD_XWR: 2434 2435 switch (xio->subfn) { 2436 2437 case XDFUN_THD:/* track headers */ 2438 if (xio->sectcnt != xd->hw_spt || 2439 (xio->block % xd->nsect) != 0 || 2440 xio->dlen != XD_IOCMD_HSZ * xd->hw_spt || 2441 xio->dptr == NULL) 2442 return (EINVAL); 2443 xio->sectcnt = 0; 2444 break; 2445 2446 case XDFUN_FMT:/* NOTE: also XDFUN_VFY */ 2447 if (xio->cmd == XDCMD_XRD) 2448 return (EINVAL); /* no XDFUN_VFY */ 2449 if (xio->sectcnt || xio->dlen || 2450 (xio->block % xd->nsect) != 0 || xio->dptr) 2451 return (EINVAL); 2452 break; 2453 2454 case XDFUN_HDR:/* header, header verify, data, data ECC */ 2455 return (EINVAL); /* not yet */ 2456 2457 case XDFUN_DM: /* defect map */ 2458 case XDFUN_DMX:/* defect map (alternate location) */ 2459 if (xio->sectcnt || xio->dlen != XD_IOCMD_DMSZ || 2460 (xio->block % xd->nsect) != 0 || xio->dptr == NULL) 2461 return (EINVAL); 2462 break; 2463 2464 default: 2465 return (EINVAL); 2466 } 2467 break; 2468 2469 case XDCMD_TST: /* diagnostics */ 2470 return (EINVAL); 2471 2472 default: 2473 return (EINVAL);/* ??? */ 2474 } 2475 2476 xdcsc = xd->parent; 2477 2478 /* create DVMA buffer for request if needed */ 2479 if (xio->dlen) { 2480 bus_addr_t busbuf; 2481 2482 if ((error = xd_dmamem_alloc(xdcsc->dmatag, xdcsc->auxmap, 2483 &seg, &rseg, 2484 xio->dlen, &buf, 2485 &busbuf)) != 0) { 2486 return (error); 2487 } 2488 dvmabuf = (caddr_t)(u_long)BUS_ADDR_PADDR(busbuf); 2489 2490 if (xio->cmd == XDCMD_WR || xio->cmd == XDCMD_XWR) { 2491 if ((error = copyin(xio->dptr, buf, xio->dlen)) != 0) { 2492 bus_dmamem_unmap(xdcsc->dmatag, buf, xio->dlen); 2493 bus_dmamem_free(xdcsc->dmatag, &seg, rseg); 2494 return (error); 2495 } 2496 } 2497 } 2498 2499 /* do it! */ 2500 2501 error = 0; 2502 s = splbio(); 2503 rqno = xdc_cmd(xdcsc, xio->cmd, xio->subfn, xd->xd_drive, xio->block, 2504 xio->sectcnt, dvmabuf, XD_SUB_WAIT); 2505 if (rqno == XD_ERR_FAIL) { 2506 error = EIO; 2507 goto done; 2508 } 2509 xio->errno = xdcsc->reqs[rqno].errno; 2510 xio->tries = xdcsc->reqs[rqno].tries; 2511 XDC_DONE(xdcsc, rqno, dummy); 2512 2513 if (xio->cmd == XDCMD_RD || xio->cmd == XDCMD_XRD) 2514 error = copyout(buf, xio->dptr, xio->dlen); 2515 2516 done: 2517 splx(s); 2518 if (dvmabuf) { 2519 xd_dmamem_free(xdcsc->dmatag, xdcsc->auxmap, &seg, rseg, 2520 xio->dlen, buf); 2521 } 2522 return (error); 2523 } 2524 2525 /* 2526 * xdc_e2str: convert error code number into an error string 2527 */ 2528 char * 2529 xdc_e2str(no) 2530 int no; 2531 { 2532 switch (no) { 2533 case XD_ERR_FAIL: 2534 return ("Software fatal error"); 2535 case XD_ERR_AOK: 2536 return ("Successful completion"); 2537 case XD_ERR_ICYL: 2538 return ("Illegal cylinder address"); 2539 case XD_ERR_IHD: 2540 return ("Illegal head address"); 2541 case XD_ERR_ISEC: 2542 return ("Illgal sector address"); 2543 case XD_ERR_CZER: 2544 return ("Count zero"); 2545 case XD_ERR_UIMP: 2546 return ("Unimplemented command"); 2547 case XD_ERR_IF1: 2548 return ("Illegal field length 1"); 2549 case XD_ERR_IF2: 2550 return ("Illegal field length 2"); 2551 case XD_ERR_IF3: 2552 return ("Illegal field length 3"); 2553 case XD_ERR_IF4: 2554 return ("Illegal field length 4"); 2555 case XD_ERR_IF5: 2556 return ("Illegal field length 5"); 2557 case XD_ERR_IF6: 2558 return ("Illegal field length 6"); 2559 case XD_ERR_IF7: 2560 return ("Illegal field length 7"); 2561 case XD_ERR_ISG: 2562 return ("Illegal scatter/gather length"); 2563 case XD_ERR_ISPT: 2564 return ("Not enough sectors per track"); 2565 case XD_ERR_ALGN: 2566 return ("Next IOPB address alignment error"); 2567 case XD_ERR_SGAL: 2568 return ("Scatter/gather address alignment error"); 2569 case XD_ERR_SGEC: 2570 return ("Scatter/gather with auto-ECC"); 2571 case XD_ERR_SECC: 2572 return ("Soft ECC corrected"); 2573 case XD_ERR_SIGN: 2574 return ("ECC ignored"); 2575 case XD_ERR_ASEK: 2576 return ("Auto-seek retry recovered"); 2577 case XD_ERR_RTRY: 2578 return ("Soft retry recovered"); 2579 case XD_ERR_HECC: 2580 return ("Hard data ECC"); 2581 case XD_ERR_NHDR: 2582 return ("Header not found"); 2583 case XD_ERR_NRDY: 2584 return ("Drive not ready"); 2585 case XD_ERR_TOUT: 2586 return ("Operation timeout"); 2587 case XD_ERR_VTIM: 2588 return ("VMEDMA timeout"); 2589 case XD_ERR_DSEQ: 2590 return ("Disk sequencer error"); 2591 case XD_ERR_HDEC: 2592 return ("Header ECC error"); 2593 case XD_ERR_RVFY: 2594 return ("Read verify"); 2595 case XD_ERR_VFER: 2596 return ("Fatail VMEDMA error"); 2597 case XD_ERR_VBUS: 2598 return ("VMEbus error"); 2599 case XD_ERR_DFLT: 2600 return ("Drive faulted"); 2601 case XD_ERR_HECY: 2602 return ("Header error/cyliner"); 2603 case XD_ERR_HEHD: 2604 return ("Header error/head"); 2605 case XD_ERR_NOCY: 2606 return ("Drive not on-cylinder"); 2607 case XD_ERR_SEEK: 2608 return ("Seek error"); 2609 case XD_ERR_ILSS: 2610 return ("Illegal sector size"); 2611 case XD_ERR_SEC: 2612 return ("Soft ECC"); 2613 case XD_ERR_WPER: 2614 return ("Write-protect error"); 2615 case XD_ERR_IRAM: 2616 return ("IRAM self test failure"); 2617 case XD_ERR_MT3: 2618 return ("Maintenance test 3 failure (DSKCEL RAM)"); 2619 case XD_ERR_MT4: 2620 return ("Maintenance test 4 failure (header shift reg)"); 2621 case XD_ERR_MT5: 2622 return ("Maintenance test 5 failure (VMEDMA regs)"); 2623 case XD_ERR_MT6: 2624 return ("Maintenance test 6 failure (REGCEL chip)"); 2625 case XD_ERR_MT7: 2626 return ("Maintenance test 7 failure (buffer parity)"); 2627 case XD_ERR_MT8: 2628 return ("Maintenance test 8 failure (disk FIFO)"); 2629 case XD_ERR_IOCK: 2630 return ("IOPB checksum miscompare"); 2631 case XD_ERR_IODM: 2632 return ("IOPB DMA fatal"); 2633 case XD_ERR_IOAL: 2634 return ("IOPB address alignment error"); 2635 case XD_ERR_FIRM: 2636 return ("Firmware error"); 2637 case XD_ERR_MMOD: 2638 return ("Illegal maintenance mode test number"); 2639 case XD_ERR_ACFL: 2640 return ("ACFAIL asserted"); 2641 default: 2642 return ("Unknown error"); 2643 } 2644 } 2645